CN112121278A - Humidifying tank and respiratory therapy equipment - Google Patents

Abstract

The invention discloses a humidification tank and a respiratory therapy device, wherein the humidification tank comprises: jar body, jar body have been seted up first water inlet, and the humidifying jar still includes: one end of the water guide groove is arranged below the first water inlet of the tank body, and the other end of the water guide groove is provided with a second water inlet; the float valve is arranged below the first water inlet and the water guide groove and used for pushing the water guide groove to plug the first water inlet when the water level in the tank body reaches a preset height; the protective valve is arranged on the first side of the floating valve and used for plugging the second water inlet after the water level in the tank body exceeds a preset height; the balance valve is arranged on the second side of the floating valve; wherein the first side and the second side are oppositely arranged. Through setting up the balanced valve to control balanced valve and the relative float valve of protection valve pile up to set up, and then the effectual arrangement of balancing the protection valve, avoid float valve, protection valve and balanced valve barycenter skew to appear, guarantee float valve, protection valve and balanced valve's lift sensitivity, in time intercept liquid and get into the humidifying jar.

Description

Humidifying tank and respiratory therapy equipment

Technical Field

The invention relates to the technical field of medical equipment, in particular to a humidification pot and respiratory therapy equipment.

Background

The breathing machine humidification tank is an instrument used in cooperation with a breathing machine (or other breathing treatment equipment with the same function), the inside of the breathing machine humidification tank is stored with moisture, and the breathing machine humidification tank is usually connected between the breathing machine and a gas conveying pipeline and is used for humidifying passing gas; if the humidifying tank is heated, the passing gas can be heated. When the humidification tank is used for adding water, the water addition amount is ensured not to exceed a certain height, otherwise, water enters the gas conveying pipeline due to overflow, the patient is choked and coughed, the occurrence probability of the relevant pneumonia of the patient is increased, meanwhile, the illness condition of the patient can be aggravated, and even the suffocation of the patient can be caused in case of emergency. In order to solve the problems, when the water level in the tank body reaches a preset height, the float valve blocks the water inlet in the single float valve structure of the existing humidification tank. But though the problem of the water yield overflow in the jar has been solved to a certain extent, but the sectional area of water inlet is less, and the easy breakage that produces of float valve upper end and water inlet after many times butt still can have the clearance after the butt between float valve and the water inlet for the humidifying jar loses the controllability to the water yield.

In order to overcome the defects of a single floating valve structure, a water inlet is additionally arranged at part of the humidification tank, external water firstly enters the water guide structure and then enters the tank body through the water guide structure, a protection valve is additionally arranged, when the floating valve cannot block the water inlet in time, the water guide structure is protected and blocked in time, however, the protection valve is required to be synchronously fixed on the floating valve in the design, the floating valve is heavier, the lifting sensitivity of the floating valve and the protection valve is further reduced, and liquid cannot be stopped in time to enter the humidification tank.

It can be seen that the prior art is still in need of improvement and development.

Disclosure of Invention

In view of the above-mentioned deficiencies of the prior art, the present invention aims to provide a humidification tank and a respiratory therapy apparatus, which aims to solve the problems that the existing humidification tank has a double-float valve structure, the gravity center shift causes the lifting sensitivity of the double-float valve, and the liquid inlet can not be stopped in time.

The technical scheme adopted by the invention for solving the technical problem is as follows: a humidification canister comprising: the jar body, first water inlet has been seted up to the jar body, wherein, the humidifying jar still includes:

one end of the water chute is arranged below the first water inlet of the tank body, and the other end of the water chute is provided with a second water inlet;

the floating valve is arranged below the first water inlet and the water guide groove and used for pushing the water guide groove to plug the first water inlet when the water level in the tank body reaches a preset height;

the protective valve is arranged on the first side of the floating valve and used for plugging the second water inlet after the water level in the tank body exceeds a preset height;

a balancing valve disposed on a second side of the float valve;

wherein the first side and the second side are oppositely disposed.

Further, the water chute includes:

the first end of the water guide groove body in the length direction is arranged between the first water inlet of the tank body and the float valve, and the second end of the water guide groove body in the length direction is arranged above the protection valve;

the sealing end is arranged at the first end of the water chute body in the length direction;

and the second water inlet end is arranged at the second end of the length direction of the water guide groove body, and the second water inlet is arranged at the bottom of the second water inlet end.

Further, the second water inlet end comprises:

a water inlet body;

the delivery port sets up to the horn mouth shape, and certainly the water inlet main part orientation the direction of protection valve extends the shaping.

Further, the protection valve includes:

a protection valve body;

the sealing part is arranged on the end face, facing the second water inlet end, of the protection valve main body and is in interference fit with the water outlet;

a first guide hole provided along a height direction of the protection valve main body;

and the second guide hole is arranged along the height direction of the protection valve main body.

Furthermore, the sealing part is arranged to be conical and matched with the water outlet, and the sealing part is matched with the conical surface of the water outlet.

Further, the balancing valve includes:

a balanced valve body;

and the third guide hole is formed along the length direction of the balance valve body.

Further, the inner surface of the roof of the jar body is downward vertical extension to have a guiding mechanism, guiding mechanism includes:

the guide circular pipe extends downwards from the inner surface of the top wall of the tank body at the first water inlet and is formed, an opening is formed in one side, facing the protective valve, of the guide circular pipe along the axial direction, and the guide circular pipe is connected with the float valve in a sliding mode;

the first guide column, the second guide column and the third guide column extend downwards from the inner surface of the top wall of the tank body;

wherein, the third guide post set up in one side of direction pipe, first guide post and second guide post set up in the opposite side of direction pipe, first guide post with first guiding hole sliding connection, the second guide post with second guiding hole sliding connection, the third guide post with third guiding hole sliding connection.

Further, the humidification pot also comprises a connecting piece;

the connector includes:

the double-valve connecting piece is sleeved on the floating valve, one end of the double-valve connecting piece is connected with the protection valve, and the other end of the double-valve connecting piece is connected with the balance valve;

and the water chute connecting piece is used for connecting the water chute to the top wall of the tank body.

Further, the float valve and the protection valve are integrally formed;

the tank body also comprises an air inlet, an air outlet and a heating assembly;

the air inlet and the air outlet are arranged on the top of the tank body and are symmetrically arranged relative to the first water inlet;

the heating assembly is connected to the bottom of the tank body.

The technical scheme adopted by the invention for solving the technical problem is as follows: a respiratory therapy apparatus, wherein the respiratory therapy apparatus comprises a humidification canister as described above.

Compared with the prior art, the invention provides a humidification tank and respiratory therapy equipment, wherein the humidification tank comprises: the jar body, first water inlet has been seted up to the jar body, the humidifying jar still includes: one end of the water chute is arranged below the first water inlet of the tank body, and the other end of the water chute is provided with a second water inlet; the floating valve is arranged below the first water inlet and the water guide groove and used for pushing the water guide groove to plug the first water inlet when the water level in the tank body reaches a preset height; the protective valve is arranged on the first side of the floating valve and used for plugging the second water inlet after the water level in the tank body exceeds a preset height; a balancing valve disposed on a second side of the float valve; wherein the first side and the second side are oppositely disposed. By arranging the water guide groove, the floating valve and the protection valve, when the water level in the tank body of the humidification tank reaches a specified height, the floating valve pushes the water guide groove to plug the water inlet; when the water inlet and/or the water chute are worn and the water chute cannot timely block the water inlet, the external water continuously enters the tank body, so that the water level in the tank body continuously rises, the protection valve continuously rises and is continuously close to the water passing port, and the water passing port is timely blocked when the water passing port is contacted, so that the external water is effectively prevented from continuously entering the tank body, the secondary protection of adding water to the humidification tank is realized, the problems of over-full water in the tank body, the patient's choking, suffocation, ventilator-related pneumonia and the like are solved, and the use safety of the humidification tank is improved; further, through setting up the balanced valve, and control balanced valve and protection valve are relative the float valve piles up to set up, and then effectual balanced the arrangement of protection valve avoids the focus skew appears in float valve, protection valve and balanced valve, ensures the lift sensitivity of float valve, protection valve and balanced valve, in time stops liquid entering humidifying jar.

Drawings

FIG. 1 is a schematic perspective view of a humidification canister in accordance with a preferred embodiment of the present invention;

FIG. 2 is a schematic exploded perspective view of a humidification canister in accordance with a preferred embodiment of the present invention;

FIG. 3 is a schematic top view of a humidification tank in accordance with a preferred embodiment of the present invention;

FIG. 4 is a schematic cross-sectional view taken along line I-I of FIG. 3 according to the preferred embodiment of the present invention;

FIG. 5 is an enlarged view of portion A of FIG. 4 in accordance with the present invention;

FIG. 6 is a schematic perspective view of a water chute of a humidification tank in accordance with a preferred embodiment of the present invention;

FIG. 7 is a schematic top view of a flume of a humidification tank in accordance with a preferred embodiment of the invention;

FIG. 8 is a schematic sectional view taken along line II-II of FIG. 7 in accordance with a preferred embodiment of the present invention;

FIG. 9 is an enlarged view of portion B of FIG. 8 in accordance with the present invention;

FIG. 10 is a schematic perspective view of the protective valve and the balance valve of the humidification tank in accordance with the preferred embodiment of the present invention;

FIG. 11 is a schematic perspective view of a body of a humidification tank in accordance with a preferred embodiment of the present invention;

description of reference numerals:

10. a humidifying tank; 11. a tank body; 12. a float valve; 13. a protection valve; 14. a water chute; 15. a balancing valve; 16. a connecting member; 17. an air inlet; 18. an air outlet; 19. a heating assembly; 111. a first water inlet; 112. a top wall; 113. a guide circular tube; 114. a first guide post; 115. a second guide post; 116. a third guide post; 117. an opening; 118. a guide mechanism; 131. a protection valve body; 132. a sealing part; 133. a first guide hole; 134. a second guide hole; 141. a second water inlet; 142. a water chute body; 143. sealing the end; 144. a second water inlet end; 145. a water inlet body; 146. a water outlet; 151. a balanced valve body; 152. a third guide hole; 161. a double valve connection; 162. a chute connector.

Detailed Description

The invention provides a humidification pot and a respiratory therapy device, and in order to make the purpose, technical scheme and effect of the invention clearer and clearer, the invention is further described in detail by referring to the attached drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The breathing machine humidification tank is an instrument used in cooperation with a breathing machine (or other breathing treatment equipment with the same function), the inside of the breathing machine humidification tank is stored with moisture, and the breathing machine humidification tank is usually connected between the breathing machine and a gas conveying pipeline and is used for humidifying passing gas; if the humidifying tank is heated, the passing gas can be heated. When the humidification tank is used for adding water, the water addition amount is ensured not to exceed a certain height, otherwise, water enters the gas conveying pipeline due to overflow, the patient is choked and coughed, the occurrence probability of the relevant pneumonia of the patient is increased, meanwhile, the illness condition of the patient can be aggravated, and even the suffocation of the patient can be caused in case of emergency. In order to solve the problems, when the water level in the tank body reaches a preset height, the float valve blocks the water inlet in the single float valve structure of the existing humidification tank. But though the problem of the water yield overflow in the jar has been solved to a certain extent, but the sectional area of water inlet is less, and the easy breakage that produces of float valve upper end and water inlet after many times butt still can have the clearance after the butt between float valve and the water inlet for the humidifying jar loses the controllability to the water yield.

In order to overcome the defects of a single floating valve structure, a water inlet is additionally arranged at part of the humidification tank, external water firstly enters the water guide structure and then enters the tank body through the water guide structure, a protection valve is additionally arranged, when the floating valve cannot block the water inlet in time, the water guide structure is protected and blocked in time, however, the protection valve is required to be synchronously fixed on the floating valve in the design, the floating valve is heavier, the lifting sensitivity of the floating valve and the protection valve is further reduced, and liquid cannot be stopped in time to enter the humidification tank.

Based on the problems that the lifting sensitivity of the double-floating valve is caused by the gravity center shift of the existing humidification tank in the double-floating valve structure and the liquid can not be stopped in time, the invention provides the humidification tank and the respiratory therapy equipment, and the floating valve pushes the water guiding groove to block the water inlet when the water level in the tank body of the humidification tank reaches the designated height by arranging the water guiding groove, the floating valve and the protection valve; when the water inlet and/or the water chute are worn and the water chute cannot timely block the water inlet, the external water continuously enters the tank body, so that the water level in the tank body continuously rises, the protection valve continuously rises and is continuously close to the water passing port, and the water passing port is timely blocked when the water passing port is contacted, so that the external water is effectively prevented from continuously entering the tank body, the secondary protection of adding water to the humidification tank is realized, the problems of over-full water in the tank body, the patient's choking, suffocation, ventilator-related pneumonia and the like are solved, and the use safety of the humidification tank is improved; further, through setting up the balanced valve, and control balanced valve and protection valve are relative the float valve piles up to set up, and then effectual balanced the arrangement of protection valve avoids the focus skew appears in float valve, protection valve and balanced valve, ensures the lift sensitivity of float valve, protection valve and balanced valve, in time stops liquid entering humidifying jar.

Referring to fig. 1 to 5, in a first embodiment of the present invention, ahumidification tank 10 is provided, which includes: thewater tank 11 is provided with afirst water inlet 111; thehumidification tank 10 further comprises: the device comprises atank body 11, awater guide groove 14, afloat valve 12, aprotection valve 13 and abalance valve 15; one end of thewater chute 14 is arranged below thefirst water inlet 111 of thetank body 11, and the other end of thewater chute 14 is provided with asecond water inlet 141; thefloat valve 12 is arranged below thefirst water inlet 111 and thewater chute 14 and used for pushing thewater chute 14 to block thefirst water inlet 111 when the water level in thetank body 11 reaches a preset height; theprotection valve 13 is arranged on the first side of thefloat valve 12 and is used for plugging thesecond water inlet 141 after the water level in thetank body 11 exceeds a preset height; thebalance valve 15 is arranged on the second side of the floatingvalve 12; wherein the first side and the second side are oppositely disposed.

It can be understood that the preset height of the water level in the tank 11 is not higher than the safe water level of the tank 11, and when the protection valve 13 seals the second water inlet 141, the water level in the tank 11 is also lower than the safe water level; the water chute 14 is arranged between the tank body 11 and the float valve 12, and between the tank body 11 and the protection valve 13; external liquid (such as water) firstly enters the water chute 14 through the first water inlet 111, and then enters the interior of the tank 11 through the second water inlet 141 on the water chute 14; the float valve 12 is arranged on one side of the water chute 14, which is far away from the first water inlet 111, and is arranged at an interval with the first water inlet 111 along the height direction, that is, the first water inlet 111, the water chute 14 and the float valve 12 are arranged in sequence from top to bottom in the height direction, and as the water level in the tank body 11 rises, the float valve 12 pushes the tank bottom of the water chute 14 to press and block the first water inlet 111, so as to stop external liquid from entering the tank body 11 in time; the other end of the water chute 14 is arranged above the protection valve 13, when the first water inlet 111 cannot be effectively blocked by the float valve 12, external liquid continues to enter the tank body 11 through the first water inlet 111, the water level inside the tank body 11 continues to rise, the protection valve 13 gradually rises, and when the water level is a certain level, the second water inlet 141 is blocked in time, so that the external water is stopped from continuing to enter the tank body 11 in time, thereby realizing secondary protection of adding water into the humidification tank 10, avoiding the overfilling of the water in the tank body 11, reducing the problems of choking, suffocation, ventilator-related pneumonia and the like of a patient, and improving the use safety of the humidification tank 10; it should be emphasized that, while the US book protection valve 13 is lifted, the balance valve 15 is lifted synchronously, so that the floating valve 12 is stressed uniformly, the gravity center deviation of the floating valve 12, the protection valve 13 and the balance valve 15 is avoided, the lifting sensitivity of the floating valve 12, the protection valve 13 and the balance valve 15 is ensured, and the liquid is stopped from entering the humidification tank 10 in time.

Referring further to fig. 6 to 9, in other preferred embodiments, thechute 14 includes: achute body 142, a sealingend 143, and a secondwater inlet end 144; a first end of thewater chute body 142 in the length direction is arranged between thefirst water inlet 111 of thetank 11 and thefloat valve 12, and a second end of thewater chute body 142 in the length direction is arranged above theprotection valve 13; the sealingend 143 is disposed at a first end of thewater chute body 142 in the length direction; the secondwater inlet end 144 is disposed at a second end of thewater chute body 142 in the length direction, and thesecond water inlet 141 is disposed at the bottom of the secondwater inlet end 144.

It can be understood that thewater chute 14 is used for guiding the liquid entering through thefirst water inlet 111 into thetank 11, and thewater chute 14 can both block thefirst water inlet 111 and play a role in guiding the water.

Further, the height of the inner surface of the bottom of thewater chute body 142 decreases from the sealingend 143 to the secondwater inlet end 144; that is, an included angle α is formed between the bottom of thewater chute body 142 and the horizontal plane, and the included angle α is 3 ° ± 0.5 °. It can be understood that the inner surface of the bottom of thewater chute body 142 is inclined, the sealingend 143 is high, and the secondwater inlet end 144 is low, so as to ensure that the liquid flowing into thefirst water inlet 111 can timely flow into thesecond water inlet 141 under the action of gravity, and then flow into thetank 11 through thesecond water inlet 141.

In other preferred embodiments, thesecond water inlet 141 includes: awater inlet body 145 and awater outlet 146; thewater outlet 146 is formed in a bell-mouth shape and extends from thewater inlet body 145 toward theprotection valve 13.

It is understood that thewater outlet 146 is protruded toward theprotection valve 13, and the cross-sectional area of thewater outlet 146 is decreased in a direction toward thewater guide groove 14 along theprotection valve 13, thereby facilitating the insertion of theprotection valve 13 into the sealingpart 132.

Referring further to fig. 5 and 10 in combination, in other preferred embodiments, theprotection valve 13 includes: a protection valvemain body 131, a sealingpart 132, afirst guide hole 133, and asecond guide hole 134; the sealingpart 132 is disposed on an end surface of theprotection valve body 131 facing the secondwater inlet end 144, and is in interference fit with thewater outlet 146; thefirst guide hole 133 is provided in a height direction of the protection valvemain body 131; thesecond guide hole 134 is provided in the height direction of the protection valvemain body 131.

It is understood that the sealingportion 132 is disposed at the axial center of the protection valvemain body 131, and thefirst guide hole 133 and thesecond guide hole 134 are symmetrically disposed at both sides of the sealingportion 132; the sealingpart 132 is arranged on theprotection valve 13, and the sealingpart 132 is controlled to be in interference fit with thewater outlet 146, so that the sealingpart 132 is convenient to insert into the water passing hole; meanwhile, the sealingpart 132 is in interference fit with thewater outlet 146, so that the sealing stability of theprotection valve 13 and thesecond water inlet 141 is effectively improved.

Further, the sealingportion 132 is configured to have a conical shape matching thewater outlet 146 and to be in conical fit with thewater outlet 146. It can be understood that, by setting thewater outlet 146 to be in a flared shape and setting the sealingportion 132 to be in a conical shape matching with thewater outlet 146, the sealingportion 132 and thewater outlet 146 are in a conical fit, which facilitates theprotection valve 13 to precisely and rapidly seal thesecond water inlet 141.

In other embodiments, the balancingvalve 15 comprises: abalance valve body 151 and athird guide hole 152, thethird guide hole 152 being provided along a length direction of thebalance valve body 151. It is understood that thethird pilot hole 152 is provided at the axial center of thebalance valve body 151.

Referring further to FIG. 11, in other preferred embodiments, the inner surface of thetop wall 112 of thetank 11 has aguide 118 extending vertically downward; theguide mechanism 118 includes: a guidecircular tube 113, afirst guide post 114, asecond guide post 115 and athird guide post 116; the guidecircular tube 113 extends downwards from the inner surface of thetop wall 112 of thetank body 11 at thefirst water inlet 111, anopening 117 is formed in one side of the guide circular tube facing theprotection valve 13 along the axial direction, and the guidecircular tube 113 is connected with thefloat valve 12 in a sliding manner; it can be understood that one end of thefloat valve 12 is accommodated in the guidecircular tube 113, and slides and rises in the guidecircular tube 113 at any time according to the water level in thetank 11, thereby ensuring that thefloat valve 12 timely pushes thewater chute 14 to block thefirst water inlet 111.Third guide post 116 set up in one side ofdirection pipe 113,first guide post 114 andsecond guide post 115 set up in the opposite side ofdirection pipe 113,first guide post 114 with first guidinghole 133 sliding connection,second guide post 115 withsecond guiding hole 134 sliding connection,third guide post 116 withthird guiding hole 152 sliding connection. The lifting direction of theprotection valve 13 is limited and guided by thefirst guide post 114 and thesecond guide post 115, and the lifting direction of thebalance valve 15 is limited and guided by thethird guide post 116.

Referring further to fig. 2, in other preferred embodiments, thehumidification tank 10 further includes a connectingmember 16; the connectingmember 16 includes: adouble valve connector 161 and agutter connector 162; the double-valve connecting piece 161 is sleeved on thefloat valve 12, and one end of the double-valve connecting piece is connected with theprotection valve 13, and the other end of the double-valve connecting piece is connected with thebalance valve 15; thechute connector 162 is used to connect thechute 14 to thetop wall 112 of thetank 11.

It can be understood that the double-valve connecting piece 161 is arranged, so that synchronous lifting of theprotection valve 13 and thebalance valve 15 is further ensured, gravity center offset of thefloat valve 12, theprotection valve 13 and thebalance valve 15 is avoided, the lifting sensitivity of thefloat valve 12, theprotection valve 13 and thebalance valve 15 is ensured, and liquid is stopped from entering thehumidification tank 10 in time; the guidinggutter 14 is fixed and sealed on the top of thetank body 11 by arranging the guidinggutter connecting piece 162, so that a guarantee is provided for thehumidification tank 10 to be provided with thesecondary protection valve 13.

In other preferred embodiments, thefloat valve 12 and theprotection valve 13 are integrally formed; thetank 11 further comprises anair inlet 17, anair outlet 18 and aheating assembly 19; theair inlet 17 and theair outlet 18 are arranged on the top of thetank body 11 and are symmetrically arranged relative to thefirst water inlet 111; theheating assembly 19 is attached to the bottom of thetank 11. It will be appreciated that theheating assembly 19 is used to heat the liquid in thetank 11, and thegas inlet 17 andoutlet 18 are used for gas communication.

In a second embodiment of the invention there is provided a respiratory treatment apparatus comprising ahumidification canister 10 as described in the above embodiments of the invention. It can be understood that the respiratory therapy equipment provided by the invention is provided with thehumidification pot 10, so that the respiratory therapy equipment has the functions of wet slipping and temperature rising, and the use safety of the respiratory therapy equipment is improved.

Compared with the prior art, the invention provides a humidification tank and respiratory therapy equipment, wherein the humidification tank comprises: the jar body, first water inlet has been seted up to the jar body, the humidifying jar still includes: one end of the water chute is arranged below the first water inlet of the tank body, and the other end of the water chute is provided with a second water inlet; the floating valve is arranged below the first water inlet and the water guide groove and used for pushing the water guide groove to plug the first water inlet when the water level in the tank body reaches a preset height; the protective valve is arranged on the first side of the floating valve and used for plugging the second water inlet after the water level in the tank body exceeds a preset height; a balancing valve disposed on a second side of the float valve; wherein the first side and the second side are oppositely disposed. By arranging the water guide groove, the floating valve and the protection valve, when the water level in the tank body of the humidification tank reaches a specified height, the floating valve pushes the water guide groove to plug the water inlet; when the water inlet and/or the water chute are worn and the water chute cannot timely block the water inlet, the external water continuously enters the tank body, so that the water level in the tank body continuously rises, the protection valve continuously rises and is continuously close to the water passing port, and the water passing port is timely blocked when the water passing port is contacted, so that the external water is effectively prevented from continuously entering the tank body, the secondary protection of adding water to the humidification tank is realized, the problems of over-full water in the tank body, the patient's choking, suffocation, ventilator-related pneumonia and the like are solved, and the use safety of the humidification tank is improved; further, through setting up the balanced valve, and control balanced valve and protection valve are relative the float valve piles up to set up, and then effectual balanced the arrangement of protection valve avoids the focus skew appears in float valve, protection valve and balanced valve, ensures the lift sensitivity of float valve, protection valve and balanced valve, in time stops liquid entering humidifying jar.

It is to be understood that the invention is not limited to the examples described above, but that modifications and variations may be effected thereto by those of ordinary skill in the art in light of the foregoing description, and that all such modifications and variations are intended to be within the scope of the invention as defined by the appended claims.

Claims (10)

1. A humidification canister comprising: the jar body, first water inlet has been seted up to the jar body, its characterized in that, the humidifying jar still includes:

one end of the water chute is arranged below the first water inlet of the tank body, and the other end of the water chute is provided with a second water inlet;

the floating valve is arranged below the first water inlet and the water guide groove and used for pushing the water guide groove to plug the first water inlet when the water level in the tank body reaches a preset height;

the protective valve is arranged on the first side of the floating valve and used for plugging the second water inlet after the water level in the tank body exceeds a preset height;

a balancing valve disposed on a second side of the float valve;

wherein the first side and the second side are oppositely disposed.

2. The humidification canister of claim 1, wherein the water chute comprises:

the first end of the water guide groove body in the length direction is arranged between the first water inlet of the tank body and the float valve, and the second end of the water guide groove body in the length direction is arranged above the protection valve;

the sealing end is arranged at the first end of the water chute body in the length direction;

and the second water inlet end is arranged at the second end of the length direction of the water guide groove body, and the second water inlet is arranged at the bottom of the second water inlet end.

3. The humidification canister of claim 2, wherein the second water inlet end comprises:

a water inlet body;

the delivery port sets up to the horn mouth shape, and certainly the water inlet main part orientation the direction of protection valve extends the shaping.

4. The humidification canister of claim 3, wherein the protection valve comprises:

a protection valve body;

the sealing part is arranged on the end face, facing the second water inlet end, of the protection valve main body and is in interference fit with the water outlet;

a first guide hole provided along a height direction of the protection valve main body;

and the second guide hole is arranged along the height direction of the protection valve main body.

5. The humidification tank of claim 4,

the sealing part is arranged to be conical and matched with the water outlet, and the sealing part is matched with the conical surface of the water outlet.

6. The humidification canister of claim 4, wherein the balancing valve comprises:

a balanced valve body;

and the third guide hole is formed along the length direction of the balance valve body.

7. The humidification tank of claim 6,

the inner surface of the roof of the jar body extends perpendicularly downwards has guiding mechanism, guiding mechanism includes:

the guide circular pipe extends downwards from the inner surface of the top wall of the tank body at the first water inlet and is formed, an opening is formed in one side, facing the protective valve, of the guide circular pipe along the axial direction, and the guide circular pipe is connected with the float valve in a sliding mode;

the first guide column, the second guide column and the third guide column extend downwards from the inner surface of the top wall of the tank body;

wherein, the third guide post set up in one side of direction pipe, first guide post and second guide post set up in the opposite side of direction pipe, first guide post with first guiding hole sliding connection, the second guide post with second guiding hole sliding connection, the third guide post with third guiding hole sliding connection.

8. The humidification canister of claim 7, further comprising a connector;

the connector includes:

the double-valve connecting piece is sleeved on the floating valve, one end of the double-valve connecting piece is connected with the protection valve, and the other end of the double-valve connecting piece is connected with the balance valve;

and the water chute connecting piece is used for connecting the water chute to the top wall of the tank body.

9. The humidification tank of any one of claims 1 to 8,

the float valve and the protection valve are integrally formed;

the tank body also comprises an air inlet, an air outlet and a heating assembly;

the air inlet and the air outlet are arranged on the top of the tank body and are symmetrically arranged relative to the first water inlet;

the heating assembly is connected to the bottom of the tank body.

10. A respiratory therapy apparatus, characterized in that it comprises a humidification canister as claimed in any one of claims 1 to 9.

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