CN208010568U - A kind of modular pressure of Water pump pressure controller - Google Patents

Abstract

The utility model discloses a kind of modular pressures of Water pump pressure controller, including diaphragm, diaphragm be separated out in shell pressure chamber and and into, the working chamber of water outlet connection, diaphragm is being equipped with push rod close to working chamber side, the lower end of push rod is equipped with the displacement sensor that can sense push rod axial displacement, the platen being connect with push rod is being equipped with close to pressure chamber side, it is equipped with rubber seat in pressure chamber and starts compression spring, push rod is being equipped with pallet close to diaphragm one end, rubber seat is being equipped with accommodating recess close to diaphragm side, the accommodating madial wall for recessing close to diaphragm side is recessed spherical surface, the center of rubber seat is equipped with compression spring via, start compression spring to pass through compression spring via and be pressed on platen, diaphragm includes the crimping edge being fixed on shell and the deformations of centre, deformations are the spherical surface towards working chamber side evagination.The utility model both can effectively extend the service life of diaphragm, and it is advantageously ensured that start the consistency of pressure value when controlling different lift water pumps.

Description

A kind of modular pressure of Water pump pressure controller

Technical field

The utility model is related to Water pump pressure controller technical fields, more particularly, to a kind of pressure of Water pump pressure controller Power module.

Background technology

In existing water pump water supply system, in order to realize the normal work of water pump and automatically control, it usually needs configuration One electronic pressure controller.As shown in Figure of description 4, attached drawing 5, existing electronic pressure controller includes shell 1, shell It is upper that there is the water inlet 11 and a water outlet 12 being attached in water supply pipe, modular pressure, the pressure are set in shell Power module includes push rod 3, and push rod upper end is equipped with circular pallet 31, and push rod lower end is equipped with corresponding displacement sensor, in push rod Upper end setting compresses pallet and flexible diaphragm 2, platen 4 is arranged in the other side of diaphragm, platen passes through spiral shell with push rod Nail is connected, and so that diaphragm to be crimped between pallet and platen, enclosure interior is separated by diaphragm to be connected to entery and delivery port Working chamber 13 and equipped with start compression spring 5 pressure chamber 14, spring is pressed on platen, to diaphragm formed a pressure. Certain hydraulic pressure is generated when the working chamber in shell is intake, the water pressure and film in working chamber being connected with entery and delivery port The elastic force of the startup compression spring of piece other side pressure chamber balances each other.When the water pressure in the working chamber of shell is reduced to startup pressure When, diaphragm drives push rod shaft to moving down, and then corresponding displacement sensor is made to generate a control signal, and control signal is by control Automatically controlled water pump starts after processing of circuit processed, to realize the automatic running of water pump water supply system.In order to avoid diaphragm Usually a rubber seat 7 is arranged in the pressure chamber side of shell in excessive deformation, when diaphragm is by hydraulic pressure and towards pressure chamber side When deformation, diaphragm reclines rubber seat, is damaged to can avoid the excessive deformation of diaphragm.

However there are following defects for existing modular pressure structure：First, there are one rubber seat has in close diaphragm side Cylindrical recess, in order to which diaphragm is deformed towards rubber seat side, and the edge of the platen on the upside of diaphragm is equipped with and upwardly extends Cylindrical flange.In this way, when diaphragm is driven push rod to move up by hydraulic pressure, the edge of platen can contradict recess, so as to Platen and the excessive of push rod is avoided to move up, i.e. formation one is deeper between the flange of platen and the recess of rubber seat at this time The recessed gap of annular.When controller is used to control the water system of high-lift pump, since the hydraulic pressure in working chamber is higher, water Pressure easily makes diaphragm upwardly-deformed and forms U-bend folding, and madial wall and the bottom surface of rubber seat recess are close in outside, and inside is then It is close to the flange of platen, to wrap platen, diaphragm is on the one hand made easily to form shear fracture in U-shaped bending place, it is another Convenient, when the hydraulic pressure of working chamber is begun to decline, the diaphragm being wrapped on platen is difficult promptly to pop up downwards and reset, at this time Mainly being formed by by the area for the diaphragm being coated on platen for power on push rod is acted on by hydraulically-formed, and is sticked on The area of diaphragm on rubber seat can not generate corresponding active force to push rod, conversely, when controller is for controlling low lift When the water system of water pump, since the hydraulic pressure in working chamber is relatively low, it is recessed that diaphragm can form upward arc, at this time by hydraulic pressure shape At the power acted on push rod be substantially formed by by the area of entire diaphragm.Therefore, when controlling high-lift pump, with The startup pressure of the corresponding working chamber of elastic force of startup compression spring can be significantly greater tnan startup pressure when control low-lift pump, To cause same controller when controlling the water pump of different lifts, starts pressure and have larger difference.

Utility model content

Diaphragm deformation present in modular pressure purpose of the utility model is to solve Water pump pressure controller is big, The problem of cracky and the startup pressure value consistency difference when controlling the water pump of different lifts, provides a kind of water-aspirator pressure The modular pressure of controller both can effectively extend the service life of diaphragm, and it is advantageously ensured that when controlling different lift water pumps Start the consistency of pressure value.

To achieve the goals above, the utility model uses following technical scheme：A kind of pressure of Water pump pressure controller Module is arranged in the shell with inlet and outlet, including diaphragm, and the diaphragm is separated out pressure chamber in shell And the working chamber being connected to entery and delivery port, diaphragm are being equipped with push rod close to working chamber side, the lower end of push rod is equipped with and can sense The displacement sensor of push rod axial displacement is being equipped with the platen being connect with push rod close to pressure chamber side, rubber is equipped in pressure chamber Skin seat is being equipped with pallet with compression spring, push rod is started close to diaphragm one end, and the rubber seat is in close diaphragm side equipped with accommodating recessed It falls into, the accommodating madial wall for recessing close to diaphragm side is recessed spherical surface, and the center of rubber seat is equipped with compression spring via, starts compression spring It across compression spring via and is pressed on platen, the diaphragm includes the deformation at the crimping edge and centre that are fixed on shell Portion, the deformations are the spherical surface towards working chamber side evagination.

Unlike the prior art, the accommodating recessed of dome shape is being arranged close to diaphragm side in the rubber seat of the utility model Slot forms a kind of gentle variation to make the depth of containing groove gradually deepen from edge to centre position；Correspondingly, film The deformations of piece are the spherical surface of evagination, are acted on by the bridge arch of spherical surface, can effectively improve the intensity of its anti-concave deformation.When with When controlling high-lift pump, when higher hydraulic pressure acts on diaphragm to make platen move up close to rubber seat in working chamber, A recessed annular groove of U-shaped will not be formed between platen and rubber seat, be now placed in platen and rubber seat containing groove it Between diaphragm can form the recessed of arc, therefore diaphragm can be effectively prevented from by the shear action formed after hydraulic pressure, Jin Eryou Conducive to its service life of extension.In particular, when diaphragm it is upwardly-deformed to drive push rod to move up to upper limit position when, diaphragm begin It is recessed only to will produce a more gentle arc eventually, therefore when the hydraulic pressure of working chamber is declined, diaphragm can be promptly anti- Spring-go position is simultaneously separated with rubber seat.That is, when controlling the water pump of different lifts, it is corresponding with the elastic force of compression spring is started Startup pressure all act on diaphragm, therefore, in the case where diaphragm area is constant, it can be ensured that the startup pressure of controller Power is kept in balance constant.

Preferably, the platen is the spherical surface of diaphragm of reclining close to diaphragm side.

Since the platen of spherical surface sticks on diaphragm, no matter how the hydraulic pressure of working chamber changes, it can be ensured that makees It is effectively transferred to platen used in the water pressure energy of diaphragm, and then the displacement of push rod is made directly to reflect the variation in water pressure of working chamber.

Preferably, being equipped with towards the recessed locating recesses in pressure chamber side, accordingly at the deformations center of the diaphragm Ground, for deformations in the positioning region for forming evagination close to pressure chamber side, the end screens that the push rod is equipped with pallet is recessed in positioning In sunken, the platen is equipped with crimping close to diaphragm side and is recessed, and the platen forms in separate diaphragm side and stretching into startup compression spring Interior crimping protrusion, the positioning region screens is in crimping recess.

The utility model diaphragm centrally disposed locating recesses, to make the end of push rod can be positioned on locating recesses It is interior, and crimping recess is then arranged in platen, is socketed to be formed with diaphragm, on the one hand can facilitate the assembling of platen, diaphragm and push rod With positioning；On the other hand, but startup compression spring compresses diaphragm one end and obtains good positioning.

Preferably, the diaphragm is equipped with positioning through hole at locating recesses center, the push rod is located in locating recesses End is equipped with positioning head, and against the bottom surface of the crimping recess of platen after positioning through hole, the center of platen is set the positioning head There is the trip bolt on the positioning head for being threaded in push rod.

Since diaphragm typically uses made of flexible rubber or the material of plastic cement one kind, the utility model It is arranged through the positioning head of positioning through hole in the upper end of the centrally disposed positioning through hole of diaphragm, push rod, to make platen and push rod It directly reclines and links together, and then can ensure that relative position size between platen, diaphragm, pallet three after assembling Consistency, and then be conducive to improve the accuracy and consistency of the control signal that displacement sensor is exported.

Preferably, the rubber seat intersects one end in compression spring via with accommodating recess is equipped with limit counterbore, when platen pastes When by the bottom surface of limit counterbore, the push rod is in upper limit position.

Limit counterbore can effectively position platen, to can avoid the excessive upwardly-deformed of diaphragm, it is ensured that control Normal work of the device when hydraulic pressure is excessively high.

Therefore, the utility model has the advantages that：Both it can effectively extend the service life of diaphragm, and be conducive to Start the consistency of pressure value when ensuring to control different lift water pumps.

Description of the drawings

Fig. 1 is a kind of structural schematic diagram of the utility model.

Fig. 2 is that push rod is moved up to the status diagram of diaphragm when upper limit position.

Fig. 3 is the assembling structure schematic diagram of diaphragm.

Fig. 4 is a kind of structural schematic diagram of existing electronic pressure controller.

Fig. 5 is status diagram of the controller of Fig. 4 in diaphragm deformation.

In figure：1, shell 11, water inlet 12, water outlet 13, working chamber 14, pressure chamber 2, diaphragm 21, Crimp edge 22, deformations 23, locating recesses 24, positioning region 25, positioning through hole 3, push rod 31, pallet 32, positioning head 4, platen 41, crimping recess 42, crimping protrusion 5, startup compression spring 6, trip bolt 7, rubber seat 71, recess 72, compression spring via 73, limit counterbore 74, abutment sleeve are housed.

Specific implementation mode

The utility model is further described with specific implementation mode below in conjunction with the accompanying drawings.

As shown in Figure 1 and Figure 2, a kind of modular pressure of Water pump pressure controller, Water pump pressure controller therein include tool There is the shell 1 of inlet and outlet, which includes at least upper shell and lower housing, to facilitate manufacture and the shell of shell The installation of inner components.The modular pressure of the present embodiment is arranged in above-mentioned shell, specifically includes flexible diaphragm 2, The edge of diaphragm is crimping edge 21, and the middle part of diaphragm is deformations 22, and the crimping of crimping edge is fixed on the upper and lower casing of shell Edge between, to make diaphragm be separated out the pressure chamber 14 and lower part and water inlet 11, water outlet 12 on top in shell The working chamber 13 of connection.In addition, diaphragm is in the push rod 3 close to the setting of working chamber side straight down, diaphragm is close to pressure chamber The platen 4 being connect with push rod is arranged in side, to make diaphragm be fixed between platen and push rod.The lower end setting of push rod can be felt The displacement sensor for surveying push rod axial displacement, in pressure chamber setting start compression spring 5, start the upper end of compression spring against case inside Wall, the lower end for starting compression spring compress platen, so that diaphragm is activated after the downward elastic force of compression spring together with push rod and are located at limit inferior Position.

When water pump water supply system is run, the inlet and outlet of Water pump pressure controller are connected to water supply line, to Making to form certain hydraulic pressure in working chamber, the hydraulic pressure in working chamber acts on diaphragm, the upward flexible deformation in middle part of diaphragm, from And push rod is driven to move up.When water pump is stopped, the hydraulic pressure in pipeline is gradually reduced, and diaphragm is starting compression spring at this time Elastic force effect is lower to drive push rod to move gradually downward.When hydraulic pressure is down to setting value, push rod, which is displaced downwardly to, starts position, at this time displacement Sensor, that is, exportable control signal, the control module of Water pump pressure controller is upon the reception of control signals, you can opens Dynamic water pump, to realize the automatic running of water pump.It is understood that Water pump pressure controller needs one control mould of setting Block, to receive and process the control signal of displacement sensor, while the operation of controllable water pump.Displacement sensor generally use Tongue tube and corresponding magnet steel.

In addition, pallet 31 can be arranged close to diaphragm one end in push rod, diaphragm is made to be clamped between pallet and chain wheel, to The holding area that diaphragm can be increased avoids diaphragm stress from concentrating and damage.For ease of installation, as shown in figure 3, diaphragm downside exists It can be arranged at deformations center towards the recessed locating recesses 23 in pressure chamber side, correspondingly, deformations are close to pressure chamber Upside forms the positioning region 24 of evagination, and the upper end of push rod is higher by pallet and screens is in locating recesses.Platen is close to diaphragm one Side setting crimping recess 41, platen far from diaphragm side formed crimping protrusion 42, start compression spring lower end be socketed in crimping it is convex Outside rising, to make the lower end of startup compression spring reliably be positioned, the positioning region screens of diaphragm is in the crimping recess of platen.From And make between push rod, diaphragm, platen three can good location, and ease of assembly.Certainly, we can also be in the locating recesses of diaphragm A centrally disposed positioning through hole 25, push rod are located at the setting of the upper end in locating recesses positioning head 32, and positioning head passes through positioning Against the bottom surface of the crimping recess of platen, the centrally disposed fastening spiral shell being threaded on the positioning head of push rod of platen after through-hole Nail 6, to make platen and push rod directly recline and be fixed together, and then can ensure that between platen, diaphragm, pallet three The consistency of relative position size after assembling, and then be conducive to the accurate of the control signal that raising displacement sensor is exported Property and consistency.It should be noted that due to push rod be plastic part, we can in the end set connecting hole of positioning head, Centrally disposed screwing through hole in chain wheel and corresponding counterbore, trip bolt can be used automatic screw, trip bolt across It can be threaded connection in connecting hole after screwing through hole.

In order to avoid diaphragm generates excessive shearing force when upwardly-deformed, we can set in pressure chamber at diaphragm A rubber seat 7 is set, an accommodating recess 71 is being arranged close to diaphragm side in rubber seat, accommodating to recess close to the interior of diaphragm side Side wall is recessed spherical surface, and the centrally disposed compression spring via 72 of rubber seat, the lower end for starting compression spring passes through compression spring via and compresses On platen.Correspondingly, the deformations of diaphragm are the spherical surface towards working chamber side evagination, thus the deformations in diaphragm and rubber A deformation space for allowing the deformations of diaphragm upwardly-deformed is formed between the accommodating recess of skin seat.

Since rubber seat is in the containing groove that dome shape is arranged close to diaphragm side, to make the depth of containing groove from side Edge is gradually deepened to centre position, forms a kind of gentle variation；Correspondingly, the deformations of diaphragm are the spherical surface of evagination, are relied on The bridge arch of spherical surface acts on, and can effectively improve it and resist the intensity of concave deformation.When for controlling high-lift pump, working chamber Interior hydraulic pressure can be higher, and higher hydraulic pressure acts on diaphragm at this time, and platen can be made to generate larger deformation and moved up close to rubber Skin seat, and push rod is driven to move up together, arc can be formed by being now placed in the diaphragm between platen and the containing groove of rubber seat It is recessed, therefore diaphragm can be effectively prevented from by the recessed annular groove of formation U-shaped after hydraulic pressure, and then can significantly decrease suffered by diaphragm The shear action arrived, thus it is conducive to extend its service life.In particular, when diaphragm is upwardly-deformed to drive push rod to move up When to upper limit position, it is recessed that diaphragm only will produce a more gentle arc always, can't be wrapped on platen, therefore When the hydraulic pressure of working chamber is declined, diaphragm can promptly rebound reset and with rubber seat be separated.That is, controlling When the water pump of different lifts, startup pressure corresponding with the elastic force of compression spring is started all acts on diaphragm, therefore, in film In the case that piece area is constant, it can be ensured that the startup pressure of controller is kept in balance constant.

Further, platen is the spherical surface of diaphragm of reclining close to diaphragm side, and therefore, no matter how the hydraulic pressure of working chamber becomes Change, it can be ensured that the water pressure energy for acting on diaphragm is effectively transferred to platen, and then the displacement of push rod is made directly to reflect working chamber Variation in water pressure.

Finally, rubber seat intersect with accommodating recess one end in compression spring via can be arranged limit counterbore 73, the outer diameter of platen and The aperture of limit counterbore is adapted.In this way, when platen moves up the bottom surface for the limit counterbore that reclines, you can make push rod limit in upper pole Extreme position, to can avoid the excessive upwardly-deformed of diaphragm, it is ensured that normal work of the controller when hydraulic pressure is excessively high.In addition, rubber The abutment sleeve 74 upwardly extended can be arranged in the upper side edge of skin seat, and abutment sleeve fits in upper shell, to convenient Positioning of the rubber seat in shell when assembling.

Claims (5)

1. a kind of modular pressure of Water pump pressure controller, is arranged in the shell with inlet and outlet, including film Piece, the working chamber that the diaphragm is separated out pressure chamber in shell and is connected to entery and delivery port, diaphragm is close to working chamber one Side is equipped with push rod, and the lower end of push rod is equipped with the displacement sensor that can sense push rod axial displacement, is equipped with close to pressure chamber side The platen being connect with push rod, pressure chamber is interior equipped with rubber seat and startup compression spring, and push rod is in close diaphragm one end equipped with pallet, spy Sign is that the rubber seat is being equipped with accommodating recess close to diaphragm side, and the accommodating madial wall for recessing close to diaphragm side is recessed Spherical surface, the center of rubber seat is equipped with compression spring via, starts compression spring and pass through compression spring via and be pressed on platen, the diaphragm packet The deformations at the crimping edge and centre that are fixed on shell are included, the deformations are the ball towards working chamber side evagination Face.

2. a kind of modular pressure of Water pump pressure controller according to claim 1, characterized in that the platen is close to film Piece side is the spherical surface of diaphragm of reclining.

3. a kind of modular pressure of Water pump pressure controller according to claim 1, characterized in that the deformation of the diaphragm It is equipped at portion center towards the recessed locating recesses in pressure chamber side, correspondingly, deformations close to pressure chamber side outside forming Convex positioning region, the push rod are equipped with the end screens of pallet in locating recesses, and the platen is equipped with pressure close to diaphragm side Recess is connect, the platen forms the crimping protrusion for stretching into and starting in compression spring in separate diaphragm side, and the positioning region screens is being pressed It connects in recess.

4. a kind of modular pressure of Water pump pressure controller according to claim 3, characterized in that the diaphragm is positioning Depression Centers are equipped with positioning through hole, and the push rod is located at the end in locating recesses and is equipped with positioning head, and the positioning head passes through fixed After the through-hole of position the fastening being threaded on the positioning head of push rod is equipped with against the bottom surface of the crimping recess of platen, the center of platen Screw.

5. a kind of modular pressure of Water pump pressure controller according to claim 1, characterized in that the rubber seat is being pressed Spring via intersects one end with accommodating recess and is equipped with limit counterbore, and when platen reclines the bottom surface of limit counterbore, the push rod is in Upper limit position.