CN112797182A

CN112797182A - Waste water electromagnetic valve

Info

Publication number: CN112797182A
Application number: CN202110068763.XA
Authority: CN
Inventors: 廖兵兵; 张平; 陈燕群
Original assignee: Ningbo Jiayin Electrical And Mechanical Technology Co ltd
Current assignee: Ningbo Jiayin Electrical And Mechanical Technology Co ltd
Priority date: 2021-01-19
Filing date: 2021-01-19
Publication date: 2021-05-14
Anticipated expiration: 2041-01-19
Also published as: CN112797182B

Abstract

The invention relates to the technical field of electromagnetic valves, in particular to a waste water electromagnetic valve. The waste water electromagnetic valve comprises a valve body, a diaphragm assembly and a pressure spring assembly, wherein the valve body is provided with a valve port and a valve cavity, the diaphragm assembly and the pressure spring assembly are both arranged in the valve cavity, the pressure spring assembly is sleeved on the diaphragm assembly, the diaphragm assembly is positioned at the valve port and can move along the axial direction of the waste water electromagnetic valve so as to open or close the valve port, and the valve cavity comprises a pressure cavity and a water inlet cavity; the balance hole has been seted up to the diaphragm subassembly, and the intake antrum passes through balance hole and pressure chamber intercommunication, and the pressure spring subassembly includes the pressure spring needle, and the pressure spring needle is worn to establish the balance hole and is set up with the interval of balance hole inner wall, and can produce the vibration in the balance hole. The invention has the advantages that: the pressure spring needle is worn to locate in the balance hole to set up with balance hole inner wall interval, the pressure spring needle can be in the vibration of balance hole, gets rid of the downthehole scale deposit body of balance or other foreign matters, avoids scale deposit body etc. to pile up for a long time and causes the plugged hole, improves the life-span of waste water solenoid valve.

Description

Waste water electromagnetic valve

Technical Field

The invention relates to the technical field of electromagnetic valves, in particular to a waste water electromagnetic valve.

Background

Along with the improvement of living standard, people also more and more highly require the quality of water of drinking water, and waste water solenoid valve is all installed to the water purification unit on the existing market, and water purification unit can filter the purification back supply people to drink to the running water.

However, high-concentration wastewater is easy to generate scale at the wastewater hole, and the long-time accumulation of scale bodies can also cause flow attenuation and even hole blockage; or other foreign matters block the waste water hole of the waste water electromagnetic valve, so that waste water cannot be discharged or the flow of the waste water is too small, thereby influencing the service life of the water purifying equipment.

Disclosure of Invention

In view of the above, there is a need for a waste water solenoid valve that can prevent scale and block, has a long service life, and has a simple structure.

In order to solve the technical problem, the application provides the following technical scheme:

a waste water electromagnetic valve comprises a valve body, a diaphragm assembly and a pressure spring assembly, wherein the valve body is provided with a valve port and a valve cavity, the diaphragm assembly and the pressure spring assembly are both arranged in the valve cavity, the pressure spring assembly is sleeved on the diaphragm assembly, the diaphragm assembly is positioned at the valve port and can move along the axial direction of the waste water electromagnetic valve so as to open or close the valve port, and the valve cavity comprises a pressure cavity and a water inlet cavity;

the diaphragm subassembly has seted up the balancing hole, the intake antrum passes through the balancing hole with the pressure chamber intercommunication, the pressure spring subassembly includes the pressure spring needle, the pressure spring needle is worn to establish the balancing hole and with the setting of balancing downthehole wall interval, and can the vibration of production in the balancing hole.

In the application, the balance hole is formed in the diaphragm assembly, when the wastewater electromagnetic valve is not started, water flow can enter from the water inlet cavity and flow into the pressure cavity through the balance hole, so that the pressure in the pressure cavity and the water inlet cavity is balanced, and the normal operation of the wastewater electromagnetic valve is ensured; simultaneously, the pressure spring needle on the pressure spring subassembly is worn to locate in the balancing hole to set up with the inner wall interval of balancing hole, so that the pressure spring needle can vibrate in the balancing hole, and the scale body on the inner wall of contacting the balancing hole through the vibration of pressure spring needle gets rid of the scale body or other foreign matters in the balancing hole, thereby avoids the scale body etc. to pile up the phenomenon that causes the stifled hole for a long time, improves waste water solenoid valve's life.

In one embodiment, the pressure spring assembly further comprises a pressure spring, and the pressure spring is sleeved on the diaphragm assembly; one end of the pressure spring needle is integrally formed with the pressure spring, and the other end of the pressure spring needle penetrates through the balance hole.

According to the arrangement, the compression spring is sleeved on the diaphragm assembly, the compression spring can bear axial pressure, and when the compression spring is under the action of external load, the compression spring can contract and deform to store deformation energy; meanwhile, the pressure spring needle and the pressure spring are integrally formed, the structure is simple, installation is not needed, and the pressure spring needle can be driven to vibrate in the balance hole when the pressure spring moves, so that scaling in the balance hole is avoided; and the axial movement of the pressure spring needle can be driven, so that the scale formation in the balance hole is further avoided.

In one embodiment, the waste water solenoid valve further comprises a noise reduction piece, the noise reduction piece is connected with the inner wall of the valve body, one end of the pressure spring needle extends into the noise reduction piece through the balance hole, and the noise reduction piece is made of a polyoxymethylene material.

So set up, the vibration of pressure spring needle when preventing that the balance hole from producing the scale deposit, also can avoid producing the scale deposit in the amortization piece, and the amortization piece plays the noise cancelling effect to the vibration of pressure spring needle, and polyoxy polyformaldehyde's resilience not only can improve the noise reduction effect of amortization piece, can strengthen the vibration effect of pressure spring needle simultaneously to strengthen the scale removal ability of pressure spring needle.

In one embodiment, the silencing piece comprises a flow guide part, and the flow guide part is connected with the inner wall of the valve body; the flow guide part is provided with a flow guide hole and a drainage hole which are mutually communicated, the flow guide hole is arranged at one end of the silencing piece close to the diaphragm assembly, and the flow guide hole is communicated with the water inlet cavity; the valve cavity further comprises a water outlet cavity communicated with the water inlet cavity, the drainage hole is formed in the other end of the flow guide portion, and the drainage hole is communicated with the water outlet cavity.

So set up, when the waste water solenoid valve is not opened, the intake antrum passes through the water conservancy diversion hole and the drainage hole of amortization piece and goes out the state that the water cavity is the intercommunication always, rivers get into the back from the intake antrum, the part gets into the pressure intracavity from the balancing hole, get into in the water conservancy diversion hole and the drainage hole of another part inflow amortization piece and go out the water cavity and flow out again, the setting of water conservancy diversion portion can be controlled the rivers flow of amortization piece of flowing through, and water conservancy diversion portion plays the step-down effect to rivers, can further the noise reduction.

In one embodiment, the diversion hole is in a circular truncated cone shape, and the inner diameter of one end, close to the diaphragm assembly, of the diversion hole is larger than the inner diameter of one end, far away from the diaphragm assembly, of the diversion hole.

So set up, the water conservancy diversion hole of being convenient for carries out the water conservancy diversion.

In one embodiment, along the axial direction of the diversion hole, one end of the silencing piece, which is far away from the diaphragm assembly, extends into the water outlet cavity to form a resisting part, and the resisting part can block water flow.

So set up, on rivers impact the department that keeps out of amortization piece, partial rivers can flow back in going out the water cavity to reduce the speed of rivers, reach the noise cancelling effect, avoid high-speed rivers to produce the noise at a play water cavity flow.

In one embodiment, the stopping part is in a semicircular ring shape and is provided with a stopping surface facing the water flow direction.

So set up, rivers can strike on stopping the face, and partial rivers can flow back in going out the water cavity to reduce the speed of rivers, reach noise cancelling effect, avoid high-speed rivers to flow at a play water cavity and produce the noise.

In one embodiment, the diaphragm assembly is further provided with a pressure relief hole, the waste water solenoid valve further comprises a valve rod assembly, and the valve rod assembly can move along the axial direction of the waste water solenoid valve to block the pressure relief hole or release the blocking, so that the pressure cavity can be communicated with or separated from the water outlet cavity through the pressure relief hole.

So set up, when the waste water solenoid valve started, valve rod assembly can move along the direction of keeping away from the pressure release hole to make the pressure release hole open, with pressure chamber and play water cavity intercommunication, the pressure of pressure chamber this moment can get into out the water intracavity, so that the pressure increase of play water intracavity makes diaphragm assembly carry out deformation towards valve rod assembly's direction, slowly lifts, the opening of the valve port of being convenient for.

In one embodiment, the diameter of the pressure relief hole is larger than that of the balance hole.

So set up, can make pressure chamber and play water cavity formation pressure differential, the diaphragm subassembly of being convenient for opens the valve port.

In one embodiment, the diaphragm assembly comprises a pressure plate and a diaphragm, the diaphragm is mounted in the valve cavity and can be abutted against the end face at the valve port, and the pressure plate penetrates through the diaphragm and is connected with the diaphragm; the balance hole reaches the pressure release hole is all seted up on the clamp plate.

So set up, the clamp plate can be fixed the position of diaphragm, and the diaphragm passes through deformation in order to open the valve port, and simultaneously, the elasticity of diaphragm can drive the clamp plate vibration and take clamp plate axial motion to make the relative pressure spring needle motion in balancing hole, further strengthen the contact of scaling body and pressure spring needle, strengthen the scale removal ability.

Compared with the prior art, the waste water electromagnetic valve provided by the application has the advantages that the balance hole is formed in the diaphragm assembly, when the waste water electromagnetic valve is not started, water flow can enter from the water inlet cavity and flow into the pressure cavity through the balance hole, so that the pressure in the pressure cavity and the water inlet cavity is balanced, and the normal operation of the waste water electromagnetic valve is ensured; simultaneously, the pressure spring needle on the pressure spring subassembly is worn to locate in the balancing hole to set up with the inner wall interval of balancing hole, so that the pressure spring needle can vibrate in the balancing hole, and the scale body on the inner wall of contacting the balancing hole through the vibration of pressure spring needle gets rid of the scale body or other foreign matters in the balancing hole, thereby avoids the scale body etc. to pile up the phenomenon that causes the stifled hole for a long time, improves waste water solenoid valve's life.

Drawings

Fig. 1 is a schematic structural diagram of a waste water solenoid valve provided by the invention.

Fig. 2 is a schematic structural view of a left side view of fig. 1.

Fig. 3 is a schematic cross-sectional view taken along line a-a in fig. 2.

Fig. 4 is a partially enlarged view of fig. 3 at B.

Fig. 5 is a schematic cross-sectional view at C-C in fig. 2.

Fig. 6 is a schematic structural view of the front view of fig. 1.

Fig. 7 is a schematic cross-sectional view taken at D-D in fig. 6.

In the figure, 100, a waste water electromagnetic valve; 10. a valve body; 11. a valve port; 12. a valve cavity; 121. a pressure chamber; 122. a water outlet cavity; 123. a water inlet cavity; 20. a diaphragm assembly; 21. a balance hole; 22. a pressure relief vent; 23. pressing a plate; 231. a drainage column; 24. a membrane; 30. a compression spring assembly; 31. a pressure spring needle; 32. a pressure spring; 40. a noise reducing member; 41. a flow guide part; 411. a flow guide hole; 412. a drainage hole; 42. a resisting part; 421. a blocking surface; 50. a valve stem assembly; 51. an iron core; 52. a seal member; 60. a coil assembly; 70. a magnetism isolating pipe; 80. an elastic member.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

It will be understood that when an element is referred to as being "mounted on" another element, it can be directly mounted on the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. When an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a waste water solenoid valve 100 provided in the present application, wherein the waste water solenoid valve 100 provided in the present application is used for filtering and purifying a water source; however, in the existing wastewater electromagnetic valve, scaling is generated at the wastewater hole due to long-term high-concentration wastewater circulation, and long-term accumulation of scaling bodies can cause flow attenuation and even hole blockage; meanwhile, other foreign matters can block a wastewater hole of the wastewater electromagnetic valve, so that wastewater cannot be discharged or the flow of the wastewater is too small, and the service life of the water purifying equipment is shortened.

Referring to fig. 2 to 5, the waste water solenoid valve 100 includes a valve body 10, a diaphragm assembly 20 and a compression spring assembly 30, the valve body 10 has a valve port 11 and a valve cavity 12, the diaphragm assembly 20 and the compression spring assembly 30 are both installed in the valve cavity 12, the compression spring assembly 30 is sleeved on the diaphragm assembly 20, and the diaphragm assembly 20 is located at the valve port 11 and can move along an axial direction of the waste water solenoid valve 100 to open or close the valve port 11.

Further, the valve cavity 12 includes a pressure chamber 121 and a water inlet chamber 123, the diaphragm assembly 20 is provided with a balance hole 21, the water inlet chamber 123 is communicated with the pressure chamber 121 through the balance hole 21, when the wastewater solenoid valve 100 is not started, water flow can enter from the water inlet chamber 123 and flow into the pressure chamber 121 through the balance hole 21 to balance the pressure in the pressure chamber 121 and the water inlet chamber 123, so as to prevent the valve port 11 from being opened due to excessive pressure, and ensure the normal operation of the wastewater solenoid valve 100; the pressure spring assembly 30 comprises a pressure spring needle 31, the pressure spring needle 31 penetrates through the balance hole 21 and is arranged at an interval with the inner wall of the balance hole 21, an interval exists between the pressure spring needle 31 and the inner wall of the balance hole 21, the pressure spring needle 31 can vibrate in the balance hole 21, the vibration of the pressure spring needle 31 is utilized to contact scaling bodies or other foreign bodies on the inner wall of the balance hole 21, the scaling bodies or other foreign bodies in the balance hole 21 are removed, the phenomenon that the scaling bodies and the like are accumulated for a long time to block the balance hole 21 is avoided, and the working efficiency and the service life of the wastewater electromagnetic valve 100 are improved.

In the embodiment, the pressure spring needle 31 vibrates due to the impact of water flow, and since there is a gap between the pressure spring needle 31 and the balance hole 21, when water flows through, the water flow can make the pressure spring needle 31 vibrate in the balance hole 21, thereby preventing the balance hole 21 from scaling; of course, in other embodiments, the vibration of pressure spring needle 31 may be achieved in other ways as long as the same effect can be achieved, such as by installing a vibrator to vibrate pressure spring needle 31.

Preferably, in the embodiment, the pressure spring needle 31 is a steel needle, and the descaling efficiency can be improved due to the higher hardness, strength and service life of the steel needle; of course, in other embodiments, the pressure spring needle 31 may be formed by other materials, as long as the descaling effect can be achieved.

Further, the pressure spring assembly 30 further comprises a pressure spring 32, the pressure spring 32 is sleeved on the diaphragm assembly 20, the pressure spring 32 can bear axial pressure, and when the pressure spring 32 is under the action of external load, the pressure spring 32 can contract and deform to store deformation energy.

Specifically, in the present embodiment, the pressure spring needle 31 and the pressure spring 32 are integrally formed, the structure is simple, the additional installation of the pressure spring needle 31 is not required, and meanwhile, the pressure spring needle 31 can be driven to vibrate in the balance hole 21 when the pressure spring 32 moves; the pressure spring needle 31 is driven to axially move along the wastewater solenoid valve 100, so that the vibration of the pressure spring needle 31 is further enhanced, and when the balance hole 21 is blocked, the pressure spring needle 31 which axially moves can also conduct the balance hole 21; of course, in other embodiments, the pressure spring needle 31 and the pressure spring 32 may be formed separately and then the pressure spring needle 31 and the pressure spring 32 may be connected, as long as the same effect can be achieved.

Referring to fig. 3 and 4, the waste water solenoid valve 100 further includes a noise reduction element 40, the noise reduction element 40 is connected to the inner wall of the valve body 10, one end of the pressure spring needle 31 can extend into the noise reduction element 40 through the balance hole 21, and when the pressure spring needle 31 vibrates, the scale formation in the noise reduction element 40 can be avoided while the scale formation in the balance hole 21 is prevented; the noise reduction part 40 is made of Polyformaldehyde (POM) material, because polyoxymethylene has elasticity, one end of the pressure spring needle 31 is arranged in the noise reduction part 40, and the noise reduction part 40 can reduce the vibration of the pressure spring needle 31, thereby improving the noise reduction effect and prolonging the service life of the noise reduction part 40; meanwhile, the elasticity of the polyoxymethylene can enhance the vibration effect of the compression spring needle 31, thereby enhancing the descaling capability of the compression spring needle 31.

Further, the silencing part 40 includes a flow guiding part 41, and the flow guiding part 41 is connected with the inner wall of the valve body 10; the flow guide part 41 is provided with a flow guide hole 411 and a flow guide hole 412 which are communicated with each other, the flow guide hole 411 is arranged at one end of the silencer 40 close to the membrane component 20, and the flow guide hole 411 is communicated with the water inlet cavity 123; the valve cavity 12 further comprises a water outlet cavity 122 communicated with the water inlet cavity 123, the drainage hole 412 is arranged at the other end of the flow guide part 41, and the drainage hole 412 is communicated with the water outlet cavity 122; thus, when the waste water solenoid valve 100 is not opened, the water inlet cavity 123 is in a state of being always communicated with the water outlet cavity 122 through the diversion hole 411 and the diversion hole 412 of the silencing piece 40, after water enters from the water inlet cavity 123, part of the water enters the pressure cavity 121 from the balance hole 21, and the other part of the water enters the diversion hole 411 and the diversion hole 412 of the silencing piece 40 and enters the water outlet cavity 122 to flow out; the setting of water conservancy diversion portion 41 can be controlled the rivers flow that flows through amortization piece 40 to, water conservancy diversion portion 41 plays the step-down effect to rivers, can further the noise reduction.

Specifically, in this embodiment, the diversion hole 411 is in a circular truncated cone shape, and an inner diameter of one end of the diversion hole 411 close to the diaphragm assembly 20 is larger than an inner diameter of one end of the diversion hole 411 far away from the diaphragm assembly 20, so that the diversion hole 411 conducts diversion; of course, in other embodiments, the diversion hole 411 may be machined into other shapes as long as the same diversion effect can be achieved, such as a semi-elliptical shape. In the present application, the drainage hole 412 is cylindrical, and the inner diameter of the drainage hole 412 is the same as the inner diameter of the end of the membrane assembly 20 away from the drainage hole 411.

In this application, the axis of balanced hole 21 coincides with the axis of water conservancy diversion hole 411 and the drainage hole 412 of noise cancelling part 40, the stretching into of pressure spring needle 31 of being convenient for to make the vibration of pressure spring needle 31 can get rid of the scale deposit body in balanced hole 21 and the noise cancelling part 40 simultaneously, in order to improve the noise reduction effect of noise cancelling part 40 and waste water solenoid valve 100's life.

Referring to fig. 6 and 7, along the axial direction of the flow guiding hole 411, one end of the sound attenuating element 40 away from the membrane assembly 20 extends into the water outlet cavity 122 to form a resisting portion 42, the resisting portion 42 can block water flow, when the water flow impacts the resisting portion 42 of the sound attenuating element 40, since the resisting portion 42 is made of polyoxymethylene material, the elasticity is provided, the noise generated when the water flow impacts the resisting portion 42 can be reduced, and the backflow of the water flow can be enhanced, so that a part of the water flow can flow back in the water outlet cavity 122, the speed of the water flow can be reduced by the resisting portion 42, the sound attenuating and noise reducing effects can be further achieved, and the noise generated when the high-speed water flow flows in the water outlet cavity 122 can be avoided.

Furthermore, the stopping portion 42 is in a shape of a semi-circular ring, and the stopping portion 42 has a stopping surface 421, the stopping surface 421 faces the water flow direction, so that the water flow can impact the stopping surface 421 and then flow back, and a part of the water flow will continue to flow back in the water outlet cavity 122, so as to reduce the speed of the water flow.

Specifically, the blocking surface 421 is perpendicular to the flow direction of the water flow to enhance the dispersion effect on the water flow, so that most of the water flow can impact the blocking portion 42 and then flow back into the water outlet cavity 122, and the other part of the water flow continues to flow out of the water outlet cavity 122, thereby improving the noise reduction effect.

Referring to fig. 5, the diaphragm assembly 20 further defines a pressure relief hole 22, the waste water solenoid valve 100 further includes a valve rod assembly 50, the valve rod assembly 50 can move along the axial direction of the waste water solenoid valve 100 to block the pressure relief hole 22 or release the blocking, so that the pressure chamber 121 can be communicated or blocked with the water outlet chamber 122 through the pressure relief hole 22; when the waste water solenoid valve 100 is activated, the valve rod assembly 50 can move in a direction away from the pressure relief hole 22, so that the pressure relief hole 22 is opened, and the pressure chamber 121 is communicated with the water outlet chamber 122, at this time, the pressure in the pressure chamber 121 enters the water outlet chamber 122, so that the pressure in the water outlet chamber 122 is increased, and the diaphragm assembly 20 deforms towards the direction of the valve rod assembly 50, and is slowly lifted, thereby facilitating the opening of the valve port 11.

Specifically, the aperture of the pressure relief hole 22 is larger than that of the balance hole 21, so that a pressure difference is formed between the pressure chamber 121 and the water outlet chamber 122, that is, the water pressure in the water outlet chamber 122 is larger than the water pressure in the pressure chamber 121, and the diaphragm assembly 20 is convenient to open the valve port 11.

Further, the diaphragm assembly 20 includes a pressure plate 23 and a diaphragm 24, the diaphragm 24 is installed in the valve cavity 12 and can be abutted against the end face of the valve port 11, and the pressure plate 23 is inserted into the diaphragm 24 and connected with the diaphragm 24; the balance hole 21 and the pressure relief hole 22 are both arranged on the pressure plate 23; the pressure plate 23 can fix the position of the diaphragm 24, the diaphragm 24 can open the valve port 11 by deformation, when the valve port 11 is opened by the diaphragm 24, the water flow in the water inlet cavity 123 flows into the water outlet cavity 122 from the valve port 11, then impacts the resisting part 42 of the noise reduction member 40, and then flows back into the water outlet cavity 122, so as to reduce the water flow speed and achieve the noise reduction effect; meanwhile, when the water flow in the water inlet cavity 123 flows into the water outlet cavity 122 from the valve port 11, the pressure spring needle 31 extends into the balance hole 21 and the silencing piece 40, and at this time, due to the impact of the water flow, the pressure spring needle 31 can also vibrate to avoid scaling in the balance hole 21 and the silencing piece 40, so that the service life of the wastewater solenoid valve 100 is prolonged. Meanwhile, the elastic deformation of the diaphragm 24 drives the pressing plate 23 to move, so that the scaling body on the inner wall of the balance hole 21 can be in full contact with the pressure spring needle 31, and the scaling effect is enhanced.

Referring to fig. 5-7, a plurality of drainage columns 231 are disposed at an end of the pressing plate 23 close to the water outlet cavity 122, so that water can flow onto the drainage columns 231 through the pressure relief holes 22, and flow into the water outlet cavity 122 after flowing through the drainage columns 231; in the present application, three drainage columns 231 are disposed at an end of the pressure plate 23 close to the water outlet cavity 122, but in other embodiments, a different number of drainage columns 231 may be disposed, such as four, five or six.

With reference to fig. 5, the waste water solenoid valve 100 further includes a coil assembly 60, a magnetism isolating pipe 70 and an elastic member 80, the coil assembly 60 is mounted on the valve body 10 and connected to the valve body 10, one end of the magnetism isolating pipe 70 is located in the coil assembly 60, the other end of the magnetism isolating pipe 70 extends into the valve body 10 and is connected to the diaphragm assembly 20, the elastic member 80 and the valve rod assembly 50 are mounted in the magnetism isolating pipe 70, and one end of the elastic member 80 abuts against one end of the inner wall of the magnetism isolating pipe 70 far away from the valve body 10, and the other end abuts against one end of the valve rod assembly 50 far away from; when the waste water solenoid valve 100 is not opened, the valve rod assembly 50 blocks the pressure relief hole 22; when the coil assembly 60 is powered on, the valve rod assembly 50 can move towards the direction away from the pressure relief hole 22 under the action of the magnetic field force so as to unblock the pressure relief hole 22; the pressure in the outlet chamber 122 is greater than the pressure in the pressure chamber 121, so that the diaphragm assembly 20 moves toward the valve stem assembly 50 to open the valve port 11.

Further, the valve rod assembly 50 includes iron core 51 and sealing member 52, and the sealing member 52 is installed in the one end that iron core 51 is close to diaphragm assembly 20, and the sealing member 52 can block pressure release hole 22 or remove the shutoff under the drive of iron core 51, and the setting of sealing member 52 can guarantee that iron core 51 is difficult by wearing and tearing when the leakproofness of reinforcing pressure release hole 22 to improve waste water solenoid valve 100's life.

The application provides a waste water solenoid valve 100's theory of operation as follows: when the waste water electromagnetic valve 100 is not opened, the valve rod assembly 50 blocks the pressure relief hole 22, after water flows in from the water inlet cavity 123, part of water flows through the balance hole 21 to enter the pressure cavity 121 so as to balance pressure, and the valve rod assembly 50 is prevented from being jacked open due to overlarge pressure, so that the valve port 11 is opened; the other part enters the water outlet cavity 122 from the flow guide part 41 of the silencing piece 40 and flows out of the water outlet cavity 122; when the coil assembly 60 of the wastewater solenoid valve 100 is powered on, the valve rod assembly 50 can move towards the direction away from the pressure relief hole 22 under the action of the magnetic field force so as to unblock the pressure relief hole 22; the pressure in the outlet chamber 122 is greater than the pressure in the pressure chamber 121, so that the diaphragm assembly 20 moves toward the valve stem assembly 50 to open the valve port 11, and the water in the inlet chamber 123 flows from the valve port 11 into the outlet chamber 122 and then flows out of the outlet chamber 122.

Meanwhile, when the wastewater electromagnetic valve 100 is not opened, water flows through the pressure spring needle 31, so that the pressure spring needle 31 can vibrate, and scaling in the balance hole 21 and the silencing piece 40 is avoided; when the waste water solenoid valve 100 operates to open the valve port 11, water flow can enter the water outlet cavity 122 from the water inlet cavity 123 through the valve port 11 and flow through the pressure spring needle 31, so that the pressure spring needle 31 generates vibration to avoid scaling in the balance hole 21 and the silencer 40; meanwhile, the water flow can impact the resisting part 42 of the silencing part 40 and then flow back to the water outlet cavity 122, so that the speed of the water flow is reduced, the silencing and noise reduction effects are achieved, and the noise generated by the high-speed water flow flowing in the water outlet cavity 122 is avoided.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.

The features of the above embodiments may be arbitrarily combined, and for the sake of brevity, all possible combinations of the features in the above embodiments are not described, but should be construed as being within the scope of the present specification as long as there is no contradiction between the combinations of the features.

It should be understood by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be used as a limitation of the present invention, and that suitable changes and modifications of the above embodiments are within the scope of the claimed invention as long as they are within the spirit and scope of the present invention.

Claims

1. A waste water electromagnetic valve is characterized by comprising a valve body, a diaphragm assembly and a pressure spring assembly, wherein the valve body is provided with a valve port and a valve cavity, the diaphragm assembly and the pressure spring assembly are both arranged in the valve cavity, the pressure spring assembly is sleeved on the diaphragm assembly, the diaphragm assembly is positioned at the valve port and can move along the axial direction of the waste water electromagnetic valve so as to open or close the valve port, and the valve cavity comprises a pressure cavity and a water inlet cavity;

2. The waste water solenoid valve of claim 1, wherein the compression spring assembly further comprises a compression spring, and the compression spring is sleeved on the diaphragm assembly; one end of the pressure spring needle is integrally formed with the pressure spring, and the other end of the pressure spring needle penetrates through the balance hole.

3. The waste water electromagnetic valve according to claim 1, further comprising a noise reduction member, wherein the noise reduction member is connected with the inner wall of the valve body, one end of the pressure spring needle extends into the noise reduction member through the balance hole, and the noise reduction member is made of polyoxymethylene material.

4. The waste water solenoid valve as claimed in claim 3, wherein the silencer comprises a flow guide part connected with the inner wall of the valve body; the flow guide part is provided with a flow guide hole and a drainage hole which are mutually communicated, the flow guide hole is arranged at one end of the silencing piece close to the diaphragm assembly, and the flow guide hole is communicated with the water inlet cavity; the valve cavity further comprises a water outlet cavity communicated with the water inlet cavity, the drainage hole is formed in the other end of the flow guide portion, and the drainage hole is communicated with the water outlet cavity.

5. The waste water solenoid valve as claimed in claim 4, wherein the guiding hole is in the shape of a circular truncated cone, and the inner diameter of the guiding hole at the end close to the diaphragm assembly is larger than the inner diameter of the guiding hole at the end far from the diaphragm assembly.

6. The waste water solenoid valve as claimed in claim 4, wherein, along the axial direction of the diversion hole, one end of the sound-deadening member away from the diaphragm assembly extends into the water outlet chamber to form a resisting part, and the resisting part can block water flow.

7. The waste water solenoid valve as claimed in claim 6, wherein the stopper is semi-circular and has a stopper surface facing the water flow direction.

8. The waste water solenoid valve as claimed in claim 4, wherein the diaphragm assembly further defines a pressure relief hole, and the waste water solenoid valve further comprises a valve rod assembly, wherein the valve rod assembly can move along the axial direction of the waste water solenoid valve to block the pressure relief hole or release the blocking, so that the pressure chamber can be communicated with or separated from the water outlet chamber through the pressure relief hole.

9. The waste water solenoid valve as claimed in claim 8, wherein the pressure relief hole has a larger diameter than the balance hole.

10. The waste water solenoid valve as claimed in claim 8, wherein the diaphragm assembly comprises a pressure plate and a diaphragm, the diaphragm is mounted in the valve chamber and can abut against the end face of the valve port, and the pressure plate penetrates through the diaphragm and is connected with the diaphragm; the balance hole reaches the pressure release hole is all seted up on the clamp plate.