CN1865747A - Electrically-controlled constant-flow water control valve - Google Patents

Abstract

The invention discloses an electric control constant-flow water valve, belonging to the liquid flux control valve technique. Wherein, the invention can quickly and reliably adjust the water flux with large adjusting range and lower driving force, without affected by water pressure fluctuation. Therefore, it arranges flux adjusting block inside the high-pressure chamber of valve, while its taper part is opposite to the flux adjusting valve port with space between them; the adjusting nut fixed on the inner wall of valve is connected to the adjusting screw; the extending part of adjusting screw is flexibly connected to the flux adjusting block, while its lower middle axle has a rectangle hole to match the flat part at the end of output axle of micro reducing motor that mounted outside the valve; the outside of adjusting screw has screw stop projection; the inner wall of valve that relative to the adjusting screw and stop projection has upper and lower stop projections. The invention is mainly used in temperature-constant quick gas water heater.

Description

Electrically-controlled constant-flow water control valve

Technical field

The present invention relates to the liquid flow control valve technical field, particularly a kind of electrically-controlled constant-flow water control valve that is used for quick formula gas water-heater as flow of inlet water control.

Background technique

In quick formula gas water-heater, make water-exit temperature be adjusted to the temperature value of a certain appointment, thereby except the flow that will change combustion gas changes its heat load, but also need the constant current water valve of the regulated at will water yield that is not subjected to the pressure of supply water influence of fluctuations.In the prior art, generally adopt following three kinds of modes: (1) manual tune constant current water valve; (2) adopt heat responsive element to change the independent variable constant current water valve of inflow; (3) the constant current water valve of stepper motor or other Electromagnetic Drive adjusting.

Adopt the manual tune mode, except can not realizing automatic controlled water flow amount regulation range, in adjustment process, because there is thermal inertia in the heat exchanger of water heater, often water temperature is regulated and can not be settled at one go.Though the second way is simple, also being applicable to needs self-regulating thermostatic type water heater, and the excursion of the water yield is still big inadequately, and applicability is strong inadequately.Though the third mode can be carried out in a big way automatic adjusting to water-outlet quantity, but in the employing that has on the regulative mode reducing motor being installed on the handle of manual tune constant current water valve controls, have plenty of the inner spindle rotation of the external magnetic field of employing actuating valve and do not have the installation constant-current device, the both can regulate the friction of part than needing bigger electromagnetic actuation force greatly owing to the water yield, cause governing speed slow and stuck easily, owing to be not provided with constant-current device, changes in flow rate is big when influenced by water pressure fluctuations, influences regulating effect.

Summary of the invention

The object of the present invention is to provide a kind of pressure of supply water influence of fluctuations, water flow regulation range of not being subjected to greatly, not need big driving force can quickly and reliably regulate the electrically-controlled constant-flow water control valve of water flow.

Technical solution proposed by the invention is such: a kind of electrically-controlled constant-flow water control valve, comprisevalve body 6 and control circuit, be positioned at valve inletingwater mouth 1 and be provided withcyclone separator 2, between cyclone separator bearing 2-1 and the water wheels bearing 5 magnetic runner 3 is housed, Hall element 4 is housed atvalve body 6 outer walls of magnetic runner 3 correspondences;Water intake 1 passage that is positioned at water wheels bearing 5 rears is provided with constant flowregulation valve port 9, and constantflow regulation piece 8 places thisvalve port 9, between constantflow regulation piece 8 andcorresponding water intake 1 outer side wall Returnningspring 7 is housed; Valvebody 6 inner chambers are provided with verticalmoisture film assembly 17, and this inner chamber is separated intohyperbaric chamber 14 and low-pressure cavity 15, described constantflow regulation piece 8 ends contact with the middle part thatmoisture film assembly 17 is positioned athyperbaric chamber 14 1 sides by regulating block top board 8-1, between the middle part of low-pressure cavity 15 1 sides andcorresponding valve body 6,Regulation spring 16 is housed atmoisture film assembly 17, in thewater outlet 11 of describedvalve body 6 Venturitube 10 is housed, and on the madial wall corresponding, have a pressure-takinghole 12 that connects with low-pressure cavity 15 with the aditus laryngis section of Venturitube 10, described Venturitube 10 is provided with Water flow adjustingvalve mouth 13 withhyperbaric chamber 14 adjoiners, also be provided with waterflow regulating block 18 in the describedhyperbaric chamber 14, adjustingscrew rod 20, the cone part 18-1 of this waterflow regulating block 18 is over against Water flow adjustingvalve mouth 13 and leave the gap, be connected as elasticity between the rod body part 18-2 of waterflow regulating block 18 and the adjustingscrew rod 20 epitaxy part ends, adjustingscrew rod 20 is perpendicular to Water flow adjustingvalve mouth 13 planes, its epitaxy part also passes the mesopore of regulating block top board 8-1, the screw thread of adjustingscrew rod 20 is threaded with the adjustingnut 19 that is fixed invalve body 6 inwalls, the other end of regulatingvalve port 13 at adjustingscrew rod 20 dorsad has square hole 20-2, the screw thread outside of adjustingscrew rod 20 is provided with screw rod stopping projection 20-1, with adjustingscrew rod 20 andcorresponding valve body 6 inwalls of stopping projection 20-1 thereof on be provided with stopping projection 21-1 and following stopping projection 21-2, reducingmotor 22 also is housed onvalve body 6, its rotating shaft 22-1 is axially concentric with adjustingscrew rod 20, and this rotating shaft 22-1passes valve body 6 and its terminal plat part inserts in the adjusting screw rod square hole 20-2.Between the middle part circle segments of described reducing motor rotating shaft 22-1 and thevalve body 6seal ring 23 being housed is tightly connected.Elastic component 24 is housed between the rod body part 18-2 of waterflow regulating block 18 and adjustingscrew rod 20 epitaxy part ends to be connected as elasticity.Thiselastic component 24 is metal spring or rubber washer.

When current when thewater intake 1 ofvalve body 6 flows into, behindcyclone separator 2, become the current of rotation, driving its magnetic runner 3 between cyclone separator bearing 2-1 and water wheels bearing 5 rotates, be installed on the Hall element 4 on the magnetropism runner 3 blades oneside valve shell 6 is detected the pulse signal that is directly proportional with water flow, current flow intohyperbaric chamber 14 through constant flowregulation valve port 9 again, flow outwater outlet 11 through Water flow adjustingvalve mouth 13 and Venturitube 10 again.Because Venturitube 10 aditus laryngis sectional area minimums, flow velocity is the fastest, its lateral wall pressure significantly descends, lose along stroke pressure in addition, make the pressure that is attached thereto logical low-pressure cavity 15 by pressure-takinghole 12 and Venturitube 10 aditus laryngis section sidewall through holes be lower than the pressure ofhyperbaric chamber 14, under the effect ofmoisture film assembly 17, moisturefilm Regulation spring 16 is compressed, Returnningspring 7 makes constantflow regulation piece 8 move forward withmoisture film assembly 17, reduce in the adjusting conical surface of constantflow regulation piece 8 and the gap between the constant flowregulation valve port 9, water flow can obviously not strengthened, when intake pressure big more, height, low-pressure cavity 14, pressure reduction between 15 is big more, and moisturefilm Regulation spring 16 is stressed big more, the adjusting conical surface and the gap between the constant flowregulation valve port 9 of constantflow regulation piece 8 are more little, thereby reach the purpose of constant current.On the basis of the above, if increase, the conical surface of the cone part 18-1 of diminishingtraffic conditioner block 18 and the gap between the Water flow adjustingvalve mouth 13, the water resistance except increasing, subtracting, the pressure reduction between the high andlow pressure chamber 14,15 also can increase or reduce, thereby water-outlet quantity can be changed by constant.The change in gap between the conical surface of above-mentioned waterflow regulating block 18 cone part 18-1 and the Water flow adjustingvalve mouth 13, be to drive adjustingscrew rod 20 by the plat part that reducing motor rotating shaft 22-1 inserts adjusting screw rod oblong aperture 20-2 to rotate, and go to realize by means of the adjustingnut 19 that is fixed on valve body 6.When adjustingscrew rod 20 turns to default top dead center, the conical surface of waterflow regulating block 18 cone part 18-1 and the gap minimum between the Water flow adjustingvalve mouth 13, at this moment, the protruding 21-1 that determines of screw rod stopping projection 20-1 and last stop collides, reducingmotor 22 stalls, adjustingscrew rod 20 no longer is rotated further, when otherwise adjustingscrew rod 20 turns to lower dead center, the conical surface of waterflow regulating block 18 cone part 18-1 and the gap maximum between the Water flow adjustingvalve mouth 13, screw rod stopping projection 20-1 and following stopping projection 21-2 collide, and adjustingscrew rod 20 no longer is rotated further.The conical surface of waterflow regulating block 18 cone part 18-1 and the gap between the Water flow adjustingvalve mouth 13 are between 0-5mm, last stopping projection 21-1, the setting of stopping projection 21-2 down, be to make adjustingscrew rod 20 that stroke range accurately be arranged, add waterflow regulating block 18 and adjustingscrew rod 20 for elasticity is connected, make gap between waterflow regulating block 18 and the Water flow adjustingvalve mouth 13 be 0 or when maximum adjustingscrew rod 20 can not be stuck.Water valve when work, by the forward and backward of reducingmotor 22, the umber of pulse that Hall element 4 is sensed in the time of water flow being adjusted to rotated by magnetic runner 3 with preset the state that the water flow umber of pulse equates, thereby reach the adjustable purpose that presets the constant current water yield.Simultaneously, in adjustment process, arrive upper and lower stop and during stall, then make it stop equidirectional rotation when reducingmotor 22 by the stall signal that detects reducingmotor 22.

Compared with prior art, the present invention has following remarkable result:

(1) the present invention's valve body when regulating water-quantity itself has constant-current characteristics, only need with common minitype speed reducing motor can be fast, accurately, regulating water-quantity reliably, in the thermostatic type fast gas heater, can reach good control effect in conjunction with control system regulating water-quantity easily.

(2) regulate simple, accurately, fast, reliable, be not subjected to that pressure of supply water is passive to be influenced, the water flow regulation range is big; Simple in structure, just can satisfy the automatic adjusting requirement of thermostatic type fast gas heater flow of inlet water with low cost of production.

The present invention is mainly used on the thermostatic type fast gas heater.

Description of drawings

Fig. 1 is the structural representation of the embodiment of the invention.

Fig. 2 is the A-A sectional view of Fig. 1.

Embodiment

By following embodiment the present invention is further elaborated.

Referring to Fig. 1, shown in Figure 2, a kind of electrically-controlled constant-flow water control valve is mainly byvalve body 6,cyclone separator 2, magnetic runner 3, Hall element 4, constantflow regulation piece 8, Venturitube 10,moisture film assembly 17, and current regulatingblock 18, adjustingnut 19, adjustingscrew rod 20, screw rod stopping projection 20-1, last stopping projection 21-1, following stopping projection 21-2, reducingmotor 22 and control circuit are formed.Magnetic runner 3 andcyclone separator 2 are housed in thewater intake 1 ofvalve body 6,valve body 6 outer walls corresponding with magnetic runner 3 are equipped with Hall element 4, on the water inlet passageway at water wheels bearing 5 rears, be provided with constant flowregulation valve port 9, constantflow regulation piece 8 and Returnningspring 7 are housed between thisvalve port 9 and the corresponding valve outer wall,valve body 6 inner chambers are provided with verticalmoisture film assembly 17 this inner chamber are separated intohyperbaric chamber 14 and low-pressure cavity 15, the top board 8-1 of constantflow regulation piece 8 extensions is terminal to contact with the middle part ofmoisture film assembly 17hyperbaric chambers 14 1 sides, betweenmoisture film assembly 17 low-pressure cavity, 15 1 middle side parts andcorresponding valve body 6,Regulation spring 16 is housed, Venturitube 10 is housed inwater outlet 11, have the pressure-takinghole 12 that connects with low-pressure cavity 15 on the madial wall of its aditus laryngis section correspondence, Venturitube 10 is provided with Water flow adjustingvalve mouth 13 withhyperbaric chamber 14 adjoiners, be provided with waterflow regulating block 18 in thehyperbaric chamber 14, adjustingnut 19 and adjustingscrew rod 20, the conical surface of the cone part 18-1 of this waterflow regulating block 18 is over against Water flow adjustingvalve mouth 13 and leave the gap,elastic component 24 is housed between the rod body part 18-2 of regulatingblock 18 and the adjustingscrew rod 20 epitaxy part ends to be connected as elasticity, adjustingscrew rod 20 is perpendicular to regulatingvalve port 13 planes, its epitaxy part passes the middle through hole of top board 8-1, adjustingnut 19 is packed onvalve body 6 inwalls and with adjustingscrew rod 20 and is threaded, have a downward oblong aperture 20-2 on the adjustingscrew rod 20 bottom axis, the screw thread outside at adjustingscrew rod 20 is provided with screw rod stopping projection 20-1, with adjustingscrew rod 20 andcorresponding valve body 6 inwalls of stopping projection 20-1 thereof on be provided with, following stopping projection 21-1 and 21-2, reducingmotor 22 also is housed on thevalve body 6, the plat part of its rotating shaft 22-1 end inserts in the adjusting screw rod oblong aperture 20-2, and the middle part circle segments of machine shaft 22-1 andvalve body 6 connecting parts are equipped withseal ring 23 and are tightly connected.

Adjustingscrew rod 20 adopts the M8X1 right-handed thread in the present embodiment, distance between last stopping projection 21-1 and the following stopping projection 21-2 can only be rotated 2.5 circles by adjustingscrew rod 20 and be gone to be provided with, and promptly the gap control between the conical surface of the cone part 18-1 of current regulatingblock 18 and the Water flow adjustingvalve mouth 13 is between 0-2.5mm.Frequency was the linear relationship of 7.5HZ when the pulse signal that Hall element 4 obtains magnetic runners 3 was 1 liter of a per minute flow.

Enterhyperbaric chamber 14 through constant flowregulation valve port 9 again when water enters throughcyclone separator 2, magnetic runner 3 from thewater intake 1 ofvalve body 6, flow outwater outlets 11 by Water flow adjustingvalve mouth 13 through Venturitube 10 again.Because the through hole of Venturitube 10 aditus laryngis section sidewalls is communicated with pressure-takinghole 12, thereby, intake pressure is big more, pressure reduction betweenhyperbaric chamber 14 and the low-pressure cavity 15 is big more, the pressure thatmoisture film assembly 17 imposes onRegulation spring 16 is big more, under Returnningspring 7 effects, make constantflow regulation piece 8, thereby play the constant current effect to the reach of constant flowregulation valve port 9 directions.As default water flow is 10 liters of per minutes, when control circuit by Hall element 4 detected pulse signal frequencies during greater than 75HZ, can send the dextrorotation electric current makes reducingmotor 22 turn right, drive adjustingscrew rod 20 dextrorotation by reducing motor rotating shaft 22-1 current regulatingblock 18 is moved to Water flow adjustingvalve mouth 13, reduce water flow; Otherwise, when control circuit acquires by Hall element 4 detected pulse signal frequencies less than 75HZ, reducingmotor 22 turns left, gap between the conical surface of current regulatingblock 18 and the Water flow adjustingvalve mouth 13 is strengthened, water flow strengthens, and said process is till detected pulse signal frequency is 75HZ.When needs changed water flow, the presetting pulse signal frequency that only needs to change control circuit got final product.

On the circle edge of Water flow adjustingvalve mouth 13, leave small gap in the present embodiment, promptly when the conical surface of current regulatingblock 18 cone part 18-1 and the gap between the Water flow adjustingvalve mouth 13 are zero, water flow is also non-vanishing, so its water flow regulation range is between 2L/min to 18L/min.

Claims (4)

1, a kind of electrically-controlled constant-flow water control valve, comprise valve body (6) and control circuit, be positioned at valve inleting water mouth (1) and be provided with cyclone separator (2), between cyclone separator bearing (2-1) and the water wheels bearing (5) magnetic runner (3) is housed, valve body (6) outer wall corresponding at magnetic runner (3) is equipped with Hall element (4); Water intake (1) passage that is positioned at water wheels bearing (5) rear is provided with constant flow regulation valve port (9), and constant flow regulation piece (8) places this valve port (9), between constant flow regulation piece (8) and corresponding water intake (1) outer side wall Returnning spring (7) is housed; Valve body (6) inner chamber is provided with vertical moisture film assembly (17), and this inner chamber is separated into hyperbaric chamber (14) and low-pressure cavity (15), described constant flow regulation piece (8) is terminal to contact with the middle part that moisture film assembly (17) is positioned at hyperbaric chamber (14) one sides by regulating block top board (8-1), be positioned between the middle part of low-pressure cavity (15) one sides and the corresponding valve body (6) at moisture film assembly (17) Regulation spring (16) is housed, in the water outlet (11) of described valve body (6) Venturi tube (10) is housed, and on the madial wall corresponding, have a pressure-taking hole (12) that connects with low-pressure cavity (15) with the aditus laryngis section of Venturi tube (10), it is characterized in that: described Venturi tube (10) is provided with Water flow adjusting valve mouth (13) with hyperbaric chamber (14) adjoiner, also be provided with water flow regulating block (18) in the described hyperbaric chamber (14), adjusting screw rod (20), the cone part (18-1) of this water flow regulating block (18) is over against Water flow adjusting valve mouth (13) and leave the gap, be connected as elasticity between the rod body part (18-2) of water flow regulating block (18) and adjusting screw rod (20) the epitaxy part end, adjusting screw rod (20) is perpendicular to Water flow adjusting valve mouth (13) plane, its epitaxy part also passes the mesopore of regulating block top board (8-1), the screw thread of adjusting screw rod (20) is threaded with the adjusting nut (19) that is fixed in valve body (6) inwall, the other end of regulating valve port (13) at adjusting screw rod (20) dorsad has square hole (20-2), the screw thread outside of adjusting screw rod (20) is provided with screw rod stopping projection (20-1), with adjusting screw rod (20) and the corresponding valve body of stopping projection (20-1) (6) inwall thereof on be provided with stopping projection (21-1) and following stopping projection (21-2), reducing motor (22) also is housed on valve body (6), its rotating shaft (22-1) is axially concentric with adjusting screw rod (20), and valve body (6) is passed in this rotating shaft (22-1) and its terminal plat part inserts in the adjusting screw rod square hole (20-2).

2, electrically-controlled constant-flow water control valve according to claim 1 is characterized in that: between the middle part circle segments of described reducing motor rotating shaft (22-1) and the valve body (6) seal ring (23) is housed and is tightly connected.

3, electrically-controlled constant-flow water control valve according to claim 1 is characterized in that: between the rod body part (18-2) of water flow regulating block (18) and adjusting screw rod (20) epitaxy part end elastic component (24) is housed and is connected as elasticity.

4, electrically-controlled constant-flow water control valve according to claim 3 is characterized in that: this elastic component (24) is metal spring or rubber washer.

Images