CN112701007A - Pressure controller easy for positive and negative pressure switching detection - Google Patents
Pressure controller easy for positive and negative pressure switching detectionDownload PDFInfo
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- CN112701007A CN112701007ACN202011438563.0ACN202011438563ACN112701007ACN 112701007 ACN112701007 ACN 112701007ACN 202011438563 ACN202011438563 ACN 202011438563ACN 112701007 ACN112701007 ACN 112701007A
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- 238000001514detection methodMethods0.000titleclaimsdescription22
- 238000009434installationMethods0.000claimsabstractdescription64
- 230000005540biological transmissionEffects0.000claimsabstractdescription3
- 239000010985leatherSubstances0.000claimsdescription26
- 239000012528membraneSubstances0.000claimsdescription7
- 238000012544monitoring processMethods0.000abstractdescription2
- 230000001960triggered effectEffects0.000description6
- 230000004323axial lengthEffects0.000description2
- 238000012986modificationMethods0.000description2
- 230000004048modificationEffects0.000description2
- 238000006073displacement reactionMethods0.000description1
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- 238000010079rubber tappingMethods0.000description1
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Abstract
Description
Technical Field
The invention relates to the technical field of machinery, in particular to a pressure controller.
Background
The pressure controller is a device for pressure control.
The working mechanism of the pressure controller is as follows: when the pressure in the system is higher or lower than the rated safety pressure, the disc in the sensor instantaneously moves, the switch joint is pushed to be switched on or switched off through the connecting guide rod, when the pressure is reduced to or increased to the rated recovery value, the disc is instantaneously reset, the switch automatically resets, or simply, when the measured pressure exceeds the rated value, the free end of the elastic element generates displacement, the switch element is pushed directly or after comparison, the on-off state of the switch element is changed, and the purpose of controlling the measured pressure is achieved.
The existing pressure controller can only realize positive pressure working condition or negative pressure working condition, and at present, the pressure controller which can be simultaneously suitable for the positive pressure working condition or the negative pressure working condition is lacked.
Disclosure of Invention
In view of the problems in the prior art, the present invention provides a pressure controller that facilitates positive and negative pressure switching detection, so as to solve at least one of the above technical problems.
In order to achieve the purpose, the invention provides a pressure controller easy for positive and negative pressure switching detection, which comprises a controller frame and a controller frame cover, wherein the controller frame and the controller frame cover are detachably connected, and a diaphragm assembly is clamped between the controller frame and the controller frame cover;
the controller frame is provided with a first installation position for installing the positive pressure adjusting mechanism and a second installation position for installing the negative pressure adjusting mechanism, and the first installation position and the second installation position are respectively positioned at the upper side and the lower side of the lever;
the controller frame is provided with a third installation position for installing the positive pressure microswitch and a fourth installation position for installing the negative pressure microswitch, and the fourth installation position and the third installation position are respectively positioned above the lever;
the first mounting location and the third mounting location are both located above the right side of the hinge point of the lever and the controller frame;
the second installation position and the fourth installation position are respectively positioned below the right side of the hinged point of the lever and the controller frame and above the left side of the hinged point of the lever and the controller frame.
This patent is through optimizing pressure controller's structure, is applicable to the pressure controller of malleation operating mode or negative pressure operating mode, or the pressure controller of malleation operating mode and negative pressure operating mode monitoring in turn. The positive pressure microswitch and the positive pressure adjusting mechanism, the negative pressure microswitch and the negative pressure adjusting mechanism or the positive pressure microswitch, the positive pressure adjusting mechanism, the negative pressure microswitch and the negative pressure adjusting mechanism are all installed according to requirements.
When the diaphragm assembly senses positive pressure, the diaphragm assembly is driven to move, so that the lever overcomes the pressure of the positive pressure adjusting mechanism to swing, and the positive pressure microswitch is triggered. When the diaphragm assembly senses negative pressure, the diaphragm assembly is driven to move, so that the lever overcomes the pressure of the negative pressure adjusting mechanism to swing, and the negative pressure microswitch is triggered.
The first installation position is an upper installation hole, the positive pressure adjusting mechanism comprises an upper adjusting screw, an upper ejector pin and an upper pressure spring, the bottom of the upper ejector pin is exposed out of the upper installation hole, the upper adjusting screw is in threaded connection with the upper installation hole, and the upper pressure spring is clamped between the upper ejector pin and the upper adjusting screw;
the second mounting position is a lower mounting hole, the negative pressure adjusting mechanism comprises a lower adjusting screw, a lower ejector pin and a lower pressure spring, the top of the lower ejector pin is exposed out of the lower mounting hole, the lower adjusting screw is in threaded connection with the lower mounting hole, and the lower pressure spring is clamped between the lower ejector pin and the lower adjusting screw;
further preferably, the upper adjusting screw is in threaded connection with an upper fixing nut;
and the lower adjusting screw is connected with a lower fixing nut through threads.
The upper fixing nut is used for preventing the positive pressure deviation of the upper adjusting screw. The lower fixing nut prevents the negative pressure of the lower adjusting screw from deviating.
Further preferably, the controller frame is further connected with a limit screw in a threaded manner, the positive pressure adjusting mechanism and the negative pressure adjusting mechanism are respectively provided with one limit screw on the right side, and the two limit screws are respectively positioned on the upper side and the lower side of the lever.
The mechanical limit of the swing amplitude of the lever is convenient to realize.
Preferably, the limit screw is further connected with a locking nut in a threaded manner, and the locking nut abuts against the controller frame. The deviation of the position of the limit screw is avoided.
Preferably, the controller rack cover is provided with a first joint and a second joint which are communicated with each other, the controller rack cover is further provided with a detection hole communicated with the first joint and the second joint, and the detection hole is opposite to the diaphragm assembly.
So that the positive pressure or the negative pressure drives the diaphragm assembly to move.
When positive pressure is input at the first joint and the second joint is blocked, the positive pressure enables the diaphragm component to bulge upwards to drive the connecting column to jack upwards, the right side of the lever is pushed to be tilted, then the positive pressure microswitch contact is pushed, and a signal is sent out; when negative pressure is input at the first joint and the second joint is blocked, the negative pressure enables the diaphragm assembly to be sunken downwards to pull the connecting column to retract downwards, and pulls the lever to tilt the left side of the lever, so that the negative pressure microswitch contact is pushed to send a signal. The blockage can be found in time conveniently, and then the blockage problem can be solved by positive and negative pressure switching.
Preferably, the controller frame is provided with a groove with an opening facing the controller frame, the groove comprises an air cavity and a groove, the air cavity is vertically arranged, the groove is used for movement of the diaphragm assembly, and the air cavity is provided with air holes communicated with the outside.
Further preferably, a connecting column is connected above the membrane assembly;
the controller frame is provided with a through hole for the connecting column to pass through, and the top of the connecting column is hinged with the center of the lever.
The up-and-down swing of the lever is driven by the diaphragm component.
Further preferably, the diaphragm assembly comprises a leather cup, and the outer edge of the leather cup is clamped and fixed between the controller frame and the controller frame cover;
the diaphragm subassembly includes last gasket and lower gasket that sets up from top to bottom, go up the gasket with the lower gasket is located respectively the upper and lower both sides of leather cup central authorities, just gasket, leather cup and lower gasket pass the screw in proper order down, just the screw with spliced pole threaded connection.
The fixing of the diaphragm component and the connecting column is convenient to realize.
Further preferably, the outer edge of the leather cup is provided with an annular protrusion extending upwards;
the top of the controller frame cover is provided with an annular convex part extending upwards;
the controller frame is provided with an annular groove used for being embedded into the annular protrusion, the depth of the annular groove is larger than the axial length of the annular protrusion, and the annular outer convex part is embedded into the annular groove and abuts against the leather cup.
The leather cup is convenient to fix.
Preferably, the third mounting position and the fourth mounting position are arranged adjacently, the third mounting position is provided with two adjacent guide grooves, and the fourth mounting position is two adjacent guide grooves;
the positive pressure micro switch and the negative pressure micro switch are both provided with screws, the screws on the positive pressure micro switch penetrate through the guide grooves of the third installation position and are fixed through nuts, and the screws on the negative pressure micro switch penetrate through the guide grooves of the fourth installation position and are fixed through nuts.
The position adjustment of the positive pressure microswitch and the negative pressure microswitch is convenient.
The pressure controller which is easy for positive and negative pressure switching detection is assembled by adopting the following steps;
assembling a controller frame;
the lever is hinged with the controller frame;
at least one of the positive pressure adjusting mechanism and the negative pressure adjusting mechanism is arranged on the controller frame;
assembling a diaphragm assembly, wherein the diaphragm assembly is connected with the connecting column;
step three, the diaphragm assembly is pre-fixed on a controller frame, and the connecting column penetrates through a through hole of the controller frame;
the controller frame covers the controller frame, the membrane assembly is clamped by the controller frame and the controller cover, and the controller frame and the controller cover are relatively fixed through screws;
and fourthly, at least one of the positive pressure microswitch and the negative pressure microswitch is arranged on the controller frame.
Drawings
FIG. 1 is a sectional view ofembodiment 1 of the present invention;
FIG. 2 is a rear view ofembodiment 1 of the present invention;
FIG. 3 is a top view ofembodiment 1 of the present invention;
fig. 4 is a bottom view ofembodiment 1 of the present invention.
In the figure: 1 is a controller frame cover; 2 is a lower gasket; 3 is an upper gasket; 4 is a controller frame; 5 is a first rivet; 6 is a second rivet; 7 is a lever; 8 is a negative pressure microswitch; 9 is M3 screw; 10 is a positive pressure microswitch; 11 is an upper pressure spring; 12 is an upper adjusting screw; 13 is an upper fixing nut; 14 is an upper limit screw; 15 is an upper lock nut; 16 is an upper knock pin; 17 is a lower knock pin; 18 is a connecting column; 19 is a lower pressure spring; 20 is a lower lock nut; 21 is a lower limit screw; 22 is a lower fixing nut; 23 is a lower adjusting screw; 24 is a leather cup; acountersunk head screw 25; 26 is a tapping screw; 27 is an M3 nut; air holes are 28.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
Referring to fig. 1 to 4, embodiment 1: the pressure controller easy for positive and negative pressure switching detection comprises acontroller frame 4 and acontroller frame cover 1 which are detachably connected, a diaphragm assembly is clamped between thecontroller frame 4 and thecontroller frame cover 1, thecontroller frame 4 is hinged with the left end part of alever 7, the center of thelever 7 is in transmission connection with the diaphragm assembly, and the diaphragm assembly drives thelever 7 to swing up and down around a hinge point with thecontroller frame 4;
thecontroller frame 4 is provided with a first installation position for installing the positive pressure adjusting mechanism and a second installation position for installing the negative pressure adjusting mechanism, and the first installation position and the second installation position are respectively positioned at the upper side and the lower side of thelever 7;
the controller is characterized by further comprising a positive-pressure microswitch 10 triggered by positive pressure and a negative-pressure microswitch 8 triggered by negative pressure, wherein a third installation position for installing the positive-pressure microswitch 10 and a fourth installation position for installing the negative-pressure microswitch 8 are arranged on thecontroller frame 4, and the fourth installation position and the third installation position are respectively positioned above thelever 7;
the first installation position and the third installation position are both positioned above the right side of the hinged point of thelever 7 and thecontroller frame 4; the second installation position and the fourth installation position are respectively positioned below the right side of the hinged point of thelever 7 and thecontroller frame 4 and above the left side of the hinged point.
This patent is through optimizing pressure controller's structure, is applicable to the pressure controller of malleation operating mode or negative pressure operating mode. Thepositive pressure microswitch 10 and the positive pressure adjusting mechanism, thenegative pressure microswitch 8 and the negative pressure adjusting mechanism or thepositive pressure microswitch 10, the positive pressure adjusting mechanism, thenegative pressure microswitch 8 and the negative pressure adjusting mechanism are all installed according to requirements.
When the diaphragm assembly senses positive pressure, the diaphragm assembly is driven to move, so that thelever 7 overcomes the pressure of the positive pressure adjusting mechanism to swing, and thepositive pressure microswitch 10 is triggered. When the diaphragm assembly senses negative pressure, the diaphragm assembly is driven to move, so that thelever 7 overcomes the pressure of the negative pressure adjusting mechanism to swing, and thenegative pressure microswitch 8 is triggered.
The first installation position is an upper installation hole, the positive pressure adjusting mechanism comprises an upper adjustingscrew 12, anupper ejector pin 16 and anupper pressure spring 11, the bottom of theupper ejector pin 16 is exposed out of the upper installation hole, the upper adjustingscrew 12 is in threaded connection with the upper installation hole, and theupper pressure spring 11 is clamped between theupper ejector pin 16 and the upper adjustingscrew 12;
the second mounting position is a lower mounting hole, the negative pressure adjusting mechanism comprises alower adjusting screw 23, alower ejector pin 17 and alower pressure spring 19, the top of thelower ejector pin 17 is exposed out of the lower mounting hole, the lower adjustingscrew 23 is in threaded connection with the lower mounting hole, and thelower pressure spring 19 is clamped between thelower ejector pin 17 and the lower adjustingscrew 23;
the upper adjustingscrew 12 is in threaded connection with anupper fixing nut 13; the lower adjustingscrew 23 is threadedly connected with alower fixing nut 22. Theupper fixing nut 13 prevents the positive pressure deviation of the upper adjustingscrew 12. Thelower fixing nut 22 prevents the negative pressure of the lower adjustingscrew 23 from deviating.
Thecontroller frame 4 is also in threaded connection with a limit screw, the positive pressure adjusting mechanism and the negative pressure adjusting mechanism are both provided with a limit screw on the right side, and the two limit screws are respectively positioned on the upper side and the lower side of thelever 7. The mechanical limit of the swing amplitude of thelever 7 is facilitated. And the limiting screw is also in threaded connection with a locking nut, and the locking nut abuts against thecontroller frame 4. The deviation of the position of the limit screw is avoided. The limiting screws comprise an upper limitingscrew 14 and a lower limitingscrew 21 which are arranged up and down. The upper and lower limit screws 14, 21 are screwed into the upper and lower holes of thecontroller frame 4 and fastened with the upper andlower lock nuts
Thecontroller frame cover 1 is provided with a first joint and a second joint which are mutually communicated, thecontroller frame cover 1 is also provided with a detection hole communicated with the first joint and the second joint, and the detection hole is opposite to the diaphragm assembly. So that the positive pressure or the negative pressure drives the diaphragm assembly to move.
When positive pressure is input at the first joint and the second joint is blocked, the positive pressure enables the diaphragm assembly to protrude upwards to drive the connectingcolumn 18 to jack upwards, the right side of thelever 7 is pushed to tilt, and then thepositive pressure microswitch 10 is pushed to contact to send a signal; when negative pressure is input at the first joint and the second joint is blocked, the negative pressure enables the diaphragm assembly to recess downwards to pull the connectingcolumn 18 to retract downwards, and pulls thelever 7 to tilt the left side of the lever, so that the contact of thenegative pressure microswitch 8 is pushed to send a signal.
Thecontroller frame 4 is provided with a groove with an opening facing, the groove comprises an air cavity arranged up and down and a groove for the movement of the diaphragm assembly, and the air cavity is provided with anair hole 28 communicated with the outside.
A connectingcolumn 18 is connected above the diaphragm assembly; thecontroller frame 4 is provided with a through hole for a connectingcolumn 18 to pass through, and the top of the connectingcolumn 18 is hinged with the center of thelever 7. So as to drive thelever 7 to swing up and down through the diaphragm assembly.
The membrane assembly comprises aleather cup 24, and the outer edge of theleather cup 24 is clamped and fixed between thecontroller frame 4 and thecontroller frame cover 1; the diaphragm assembly comprises anupper gasket 3 and alower gasket 2 which are arranged from top to bottom, theupper gasket 3 and thelower gasket 2 are respectively positioned at the upper side and the lower side of the center of theleather cup 24, thelower gasket 2, theleather cup 24 and thelower gasket 2 sequentially penetrate through a countersunkscrew 25, and the countersunkscrew 25 is in threaded connection with the connectingcolumn 18. Facilitating the securing of the diaphragm assembly to theattachment post 18. The outer edge of theleather cup 24 is provided with an annular protrusion extending upwards; the top of thecontroller frame cover 1 is provided with an annular convex part extending upwards; thecontroller frame 4 is provided with an annular groove used for being embedded into the annular protrusion, the depth of the annular groove is larger than the axial length of the annular protrusion, and the annular outer convex part is embedded into the annular groove and is abutted against the leather cup. Theleather cup 24 is convenient to fix.
The third installation position and the fourth installation position are arranged adjacently, the third installation position is provided with two adjacent guide grooves, and the fourth installation position is two adjacent guide grooves; the positive pressuremicro switch 10 and the negative pressuremicro switch 8 both pass through screws, the screws on the positive pressuremicro switch 10 pass through the guide grooves of the third installation position and are fixed through nuts, and the screws on the negative pressuremicro switch 8 pass through the guide grooves of the fourth installation position and are fixed through nuts. The position adjustment of thepositive pressure microswitch 10 and thenegative pressure microswitch 8 is facilitated.
The pressure controller which is easy for positive and negative pressure switching detection is assembled by adopting the following steps;
assembling by adopting the following steps;
assembling a controller frame;
the lever is hinged with the controller frame. Specifically, thelever 7 is connected to thecontroller frame 4 by asecond rivet 6.
At least one of the positive pressure adjusting mechanism and the negative pressure adjusting mechanism is installed on the controller frame. Specifically, anupper ejector pin 16 and anupper pressure spring 11 are sequentially placed into a through hole in the upper part of thecontroller frame 4, and an upper adjustingscrew 12 is screwed in and fastened by anupper fixing nut 13; thelower ejector pin 17 and thelower pressure spring 19 are sequentially placed in a through hole below thecontroller frame 4, and the lower adjustingscrew 23 is screwed in and fastened by thelower fixing nut 22.
And (5) installing an upper limiting screw or a lower limiting screw. Specifically, theupper limit screw 14 and thelower limit screw 21 are screwed into the upper and lower holes of thecontroller frame 4, respectively, and fastened by theupper lock nut 15 and thelower lock nut 20.
And step two, assembling a membrane component, wherein the membrane component is connected with the connecting column. Specifically, theleather cup 24 is clamped between theupper gasket 3 and thelower gasket 2, and acountersunk head screw 25 penetrates through theleather cup 24, the middle through hole of theupper gasket 3 and the middle through hole of thelower gasket 2 to be fastened with the connectingcolumn 18.
Step three, the diaphragm assembly is pre-fixed on a controller frame, and the connecting column penetrates through a through hole of the controller frame;
the controller frame covers the controller frame, the membrane assembly is clamped by the controller frame and the controller cover, and the controller frame and the controller cover are relatively fixed through screws.
Specifically, the connectingcolumn 18 passes through a through hole in the middle of thecontroller frame 4. Theleather cup 24 is embedded into the annular groove of thecontroller frame 4, thecontroller frame cover 1 is covered on thecontroller frame 4, the annular protruding part of the outer ring of thecontroller frame cover 1 is abutted against theleather cup 24, and theleather cup 24 is fastened between thecontroller frame cover 1 and thecontroller frame 4 by using theM4 screw 26.
And fourthly, at least one of the positive pressure microswitch and the negative pressure microswitch is arranged on the controller frame. Thenegative pressure microswitch 8 and thepositive pressure microswitch 10 are respectively arranged above thelever 7 and are fastened on thecontroller frame 4 by anM3 screw 9 and anM3 nut 27.
The principle is as follows: the left side and the right side below the controller frame cover are respectively provided with a joint, when positive pressure is input at the position A and the position B is blocked, the leather cup is upwards protruded by the positive pressure to drive the connecting column to be upwards jacked, the right side of the lever is pushed to be tilted, and then the positive pressure microswitch contact is pushed to send a signal; when negative pressure is input at the position A and the position B is blocked, the leather cup is sunken downwards by the negative pressure to pull the connecting column to retract downwards, the lever is pulled to tilt the left side of the connecting column, the negative pressure microswitch contact is pushed, and a signal is sent.
The simple, light and small pressure controller provided by the invention can adjust positive and negative pressure, and can respectively give a signal when the set positive and negative pressure is reached.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that it is obvious to those skilled in the art that various modifications and improvements can be made without departing from the principle of the present invention, and these modifications and improvements should also be considered as the protection scope of the present invention.
Claims (10)
1. The pressure controller is characterized in that the controller frame is hinged with the left end part of a lever, the center of the lever is in transmission connection with the diaphragm assembly, and the diaphragm assembly drives the lever to swing up and down around a hinged point with the controller frame;
the controller frame is provided with a first installation position for installing the positive pressure adjusting mechanism and a second installation position for installing the negative pressure adjusting mechanism, and the first installation position and the second installation position are respectively positioned at the upper side and the lower side of the lever;
the controller frame is provided with a third installation position for installing the positive pressure microswitch and a fourth installation position for installing the negative pressure microswitch, and the fourth installation position and the third installation position are respectively positioned above the lever;
the first mounting location and the third mounting location are both located above the right side of the hinge point of the lever and the controller frame;
the second installation position and the fourth installation position are respectively positioned below the right side of the hinged point of the lever and the controller frame and above the left side of the hinged point of the lever and the controller frame.
2. A pressure controller susceptible to positive and negative pressure switch detection as claimed in claim 1, wherein: the first installation position is an upper installation hole, the positive pressure adjusting mechanism comprises an upper adjusting screw, an upper ejector pin and an upper pressure spring, the bottom of the upper ejector pin is exposed out of the upper installation hole, the upper adjusting screw is in threaded connection with the upper installation hole, and the upper pressure spring is clamped between the upper ejector pin and the upper adjusting screw;
the second mounting position is a lower mounting hole, the negative pressure adjusting mechanism comprises a lower adjusting screw, a lower ejector pin and a lower pressure spring, the top of the lower ejector pin is exposed out of the lower mounting hole, the lower adjusting screw is in threaded connection with the lower mounting hole, and the lower pressure spring is clamped between the lower ejector pin and the lower adjusting screw;
the upper adjusting screw is in threaded connection with an upper fixing nut;
and the lower adjusting screw is connected with a lower fixing nut through threads.
3. A pressure controller susceptible to positive and negative pressure switch detection as claimed in claim 1, wherein: the controller frame is further in threaded connection with a limit screw, the positive pressure adjusting mechanism and the negative pressure adjusting mechanism are respectively provided with one limit screw on the right side, and the two limit screws are respectively positioned on the upper side and the lower side of the lever;
and the limiting screw is also in threaded connection with a locking nut, and the locking nut abuts against the controller frame.
4. A pressure controller susceptible to positive and negative pressure switch detection as claimed in claim 1, wherein: the controller rack cover is provided with a first connector and a second connector which are communicated with each other, the controller rack cover is also provided with detection holes communicated with the first connector and the second connector, and the detection holes are over against the diaphragm assembly.
5. A pressure controller susceptible to positive and negative pressure switch detection as claimed in claim 4, wherein: a connecting column is connected above the diaphragm assembly;
the controller frame is provided with a through hole for the connecting column to pass through, and the top of the connecting column is hinged with the center of the lever.
6. A pressure controller susceptible to positive and negative pressure switch detection as claimed in claim 5, wherein: when positive pressure is input at the first joint and the second joint is blocked, the positive pressure enables the diaphragm component to bulge upwards to drive the connecting column to jack upwards, the right side of the lever is pushed to be tilted, then the positive pressure microswitch contact is pushed, and a signal is sent out; when negative pressure is input at the first joint and the second joint is blocked, the negative pressure enables the diaphragm assembly to be sunken downwards to pull the connecting column to retract downwards, and pulls the lever to tilt the left side of the lever, so that the negative pressure microswitch contact is pushed to send a signal.
7. A pressure controller susceptible to positive and negative pressure switch detection as claimed in claim 1, wherein: the controller frame is provided with a groove with an opening facing, the groove comprises an air cavity arranged up and down and a groove for the movement of the diaphragm assembly, and the air cavity is provided with air holes communicated with the outside.
8. A pressure controller susceptible to positive and negative pressure switch detection as claimed in claim 1, wherein: the diaphragm assembly comprises a leather cup, and the outer edge of the leather cup is clamped and fixed between the controller frame and the controller frame cover;
the diaphragm subassembly includes last gasket and lower gasket that sets up from top to bottom, go up the gasket with the lower gasket is located respectively the upper and lower both sides of leather cup central authorities, just gasket, leather cup and lower gasket pass the screw in proper order down, just the screw with spliced pole threaded connection.
9. A pressure controller susceptible to positive and negative pressure switch detection as claimed in claim 1, wherein: the third installation position and the fourth installation position are arranged adjacently, the third installation position is provided with two adjacent guide grooves, and the fourth installation position is two adjacent guide grooves;
the positive pressure micro switch and the negative pressure micro switch are both provided with screws, the screws on the positive pressure micro switch penetrate through the guide grooves of the third installation position and are fixed through nuts, and the screws on the negative pressure micro switch penetrate through the guide grooves of the fourth installation position and are fixed through nuts.
10. A pressure controller susceptible to positive and negative pressure switch detection as claimed in claim 5, wherein: assembling by adopting the following steps;
assembling a controller frame;
the lever is hinged with the controller frame;
at least one of the positive pressure adjusting mechanism and the negative pressure adjusting mechanism is arranged on the controller frame;
assembling a diaphragm assembly, wherein the diaphragm assembly is connected with the connecting column;
step three, the diaphragm assembly is pre-fixed on a controller frame, and the connecting column penetrates through a through hole of the controller frame;
the controller frame covers the controller frame, the membrane assembly is clamped by the controller frame and the controller cover, and the controller frame and the controller cover are relatively fixed through screws;
and fourthly, at least one of the positive pressure microswitch and the negative pressure microswitch is arranged on the controller frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011438563.0ACN112701007B (en) | 2020-12-11 | 2020-12-11 | Pressure controller easy for positive and negative pressure switching detection |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011438563.0ACN112701007B (en) | 2020-12-11 | 2020-12-11 | Pressure controller easy for positive and negative pressure switching detection |
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| CN112701007Atrue CN112701007A (en) | 2021-04-23 |
| CN112701007B CN112701007B (en) | 2023-03-24 |
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| CN103542138A (en)* | 2013-11-01 | 2014-01-29 | 深圳市华力大机电技术有限公司 | Airbag type ventilation and drainage positive and negative pressure water hammer control valve group |
| CN104282499A (en)* | 2014-10-10 | 2015-01-14 | 成都锐奕信息技术有限公司 | Improvement structure of air damping type time relay |
| CN208577714U (en)* | 2018-04-18 | 2019-03-05 | 汉中市鹏远生物科技有限公司 | A kind of food fermentation device |
| CN209708899U (en)* | 2019-04-16 | 2019-11-29 | 褚玉生 | Novel blast switch |
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