Anti-fouling electromagnetic valve structure

Abstract

The anti-fouling electromagnetic valve structure comprises a valve body, a sealing valve plate, an electromagnetic control unit and a valve element, a valve chamber is arranged in the valve body, a valve port communicated with a waste water inlet channel and a waste water outlet channel is arranged in the valve chamber, and the sealing valve plate is arranged in the valve chamber in a longitudinal sliding mode and used for opening and closing the valve port. A back pressure cavity is formed between the sealing valve plate and the valve chamber, a water outlet hole is formed in the sealing valve plate, one end of the valve element is arranged in the valve body in a longitudinal sliding mode, and the electromagnetic control unit is arranged on the valve body and used for driving the valve element to longitudinally slide so that the other end of the valve element can open and close the water outlet hole. And the valve body is also provided with a raw water inlet channel communicated with the backpressure cavity. The service life of the electromagnetic valve is prolonged, the use stability of the electromagnetic valve is improved, the sealing valve plate does not need to be cleaned or replaced, and cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of electromagnetic valves, in particular to an anti-fouling and anti-clogging electromagnetic valve structure. Background Art

[0002] In the existing market, there are many types of solenoid valves, and their principles are roughly the same. The solenoid water inlet valve has a compact structure, is easy to control, and is widely used in many home appliance products such as washing machines, air conditioners, dishwashers, and ice makers.

[0003] Existing conventional solenoid valves such as Figure 3 As shown, it mainly includes a valve body, a sealing valve disc, a valve core, an electromagnetic element and a spring. When the valve is opened, the electromagnetic element is energized and magnetically attracts the valve core upward and separates from the water outlet hole on the sealing valve disc. The back pressure chamber above the sealing valve disc releases pressure through the water outlet hole. The sealing valve disc is pushed upward and separates from the valve port under the hydraulic pressure of the water inlet channel, so that the water inlet channel is connected with the water outlet channel. When the valve is closed, the electromagnetic element is de-energized, and the valve core moves downward under the action of the spring and blocks the water outlet hole. The medium in the water inlet channel flows into the back pressure chamber through the water inlet hole on the sealing valve disc, the sealing valve disc moves downward and blocks the valve port, the water inlet channel is disconnected from the water outlet channel, and the valve is closed.

[0004] However, the problem with the above-mentioned conventional solenoid valve is that when there are too many water impurities in the pipeline or the solenoid valve has not been working for a long time, a certain amount of sediment will be generated at the inlet of the solenoid valve (liquid inlet channel and back pressure chamber). As a result, the sediment will block the water inlet and outlet holes on the sealing valve plate or be adsorbed on the inner walls of the water inlet and outlet holes, causing the solenoid valve to fail. In addition, replacing and cleaning the solenoid valve will not only increase the manpower / time cost, but also reduce the consumer's experience. Summary of the invention

[0005] In view of the above problems existing in the existing solenoid valves, the present invention aims to provide a fouling and clogging-proof solenoid valve structure with a long service life and stable use.

[0006] The specific technical solutions are as follows:

[0007] A solenoid valve structure for preventing fouling and clogging includes a valve body, a sealing valve disc, an electromagnetic control unit and a valve core, wherein the valve body is provided with a valve chamber, the valve chamber is provided with a valve port connecting a wastewater inlet channel and a wastewater outlet channel, the sealing valve disc can be longitudinally slidably arranged in the valve chamber for opening and closing the valve port, a back pressure cavity is formed between the sealing valve disc and the valve chamber, the sealing valve disc is provided with a water outlet hole, one end of the valve core is longitudinally slidably arranged in the valve body, the electromagnetic control unit is arranged on the valve body, and is used to drive the valve core to slide longitudinally so that the other end of the valve core opens and closes the water outlet hole, and the valve body is also provided with a valve core connected to the back pressure cavity raw water inlet channel, when the electromagnetic control unit presses down the valve core so that the other end of the valve core closes the water outlet, the sum of the hydraulic pressure in the raw water inlet channel and the pressure of the electromagnetic control unit pressing down the valve core is greater than the hydraulic pressure in the wastewater inlet channel, so that the sealing valve disc moves downward and closes the valve port, and the solenoid valve is in a closed state; when the electromagnetic control unit moves up the valve core so that the valve core opens the water outlet, the back pressure chamber is depressurized, and the hydraulic pressure in the wastewater inlet channel is greater than the hydraulic pressure in the back pressure chamber, so that the sealing valve disc moves up and opens the valve port, and the solenoid valve is in an open state.

[0008] As a further improvement and optimization of the present solution, a mounting groove extending upward from the top of the valve chamber and communicating with the back pressure chamber is provided, and the valve core can be longitudinally slidably installed in the mounting groove.

[0009] As a further improvement and optimization of this solution, the electromagnetic control unit includes: an electromagnetic element and a spring, the electromagnetic element is arranged in the valve body and surrounded by the outside of the valve core, the spring is placed in the installation groove and located between the valve core and the bottom of the installation groove.

[0010] As a further improvement and optimization of the present solution, the bottom of the valve core is provided with a sealing rubber pad, and cooperates with the water outlet to seal.

[0011] As a further improvement and optimization of this solution, the top opening of the water outlet is extended upward.

[0012] As a further improvement and optimization of this solution, the water outlet is coaxially arranged with the valve port.

[0013] As a further improvement and optimization of the present solution, the bottom of the sealing valve plate is provided with a sealing rubber pad, and cooperates with the valve port seal.

[0014] As a further improvement and optimization of the present solution, the bottom of the sealing valve plate is provided with an annular mounting groove, and the sealing rubber pad is clamped in the annular mounting groove.

[0015] Compared with the prior art, the above technical solution has the following positive effects:

[0016] The utility model discloses a raw water inlet channel connected with the back pressure chamber is provided on the valve body, when the valve is opened and closed, the waste water in the waste water inlet channel does not pass through the water inlet hole, effectively avoids the impurities in the medium to block the water inlet hole of the sealing valve plate and cause the solenoid valve failure, not only improves the service life and the use stability of the solenoid valve, but also does not need to clean or replace the sealing valve plate, thus reducing the cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural schematic diagram of an anti-fouling and blocking solenoid valve structure of the utility model in an open state;

[0018] Figure 2 It is a structural schematic diagram of an anti-fouling and blocking solenoid valve structure of the utility model in a closed state;

[0019] Figure 3 It is a structural schematic diagram of an existing conventional solenoid valve;

[0020] In the attached figure: 1. valve body; 2. sealing valve plate; 3. valve core; 4. electromagnetic control unit; 11. wastewater inlet channel; 12. outlet channel; 13. valve port; 14. raw water inlet channel; 15. back pressure chamber; 21. sealing rubber pad; 22. outlet hole; 31. blocking rubber pad; 41. electromagnetic element; 42. spring. DETAILED DESCRIPTION

[0021] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] In the description of the present invention, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, if the terms "first", "second", "third" appear, they are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] Figure 1 This is a schematic diagram of the structure of an anti-fouling solenoid valve structure in an open state according to the utility model. Figure 2 This is a schematic diagram of the structure of the anti-fouling solenoid valve structure of the utility model in a closed state, as shown in FIG. Figure 1-2 FIG. 1 shows a preferred embodiment of an anti-fouling solenoid valve structure, including a valve body 1, a sealing valve disc 2, an electromagnetic control unit 4 and a valve core 3. The valve body 1 has a valve chamber, and the valve chamber has a valve port 13 connecting a wastewater inlet channel 11 and a water outlet channel 12. The sealing valve disc 2 can be longitudinally slidably arranged in the valve chamber for opening and closing the valve port 13. A back pressure cavity 15 is formed between the sealing valve disc 2 and the valve chamber. The sealing valve disc 2 has a water outlet hole 22. One end of the valve core 3 can be longitudinally slidably arranged in the valve body 1. The electromagnetic control unit 4 is arranged on the valve body 1 for driving the valve core 3 to slide longitudinally so that the other end of the valve core 3 opens and closes the water outlet hole 22. The valve body 1 is also provided with a There is a raw water inlet channel 14 connected to the back pressure chamber 15. When the electromagnetic control unit 4 presses down the valve core 3 to close the water outlet hole 22 at the other end of the valve core 3, the sum of the hydraulic pressure in the raw water inlet channel 14 and the pressure of the electromagnetic control unit 4 pressing down the valve core 3 is greater than the hydraulic pressure in the wastewater inlet channel 11, so that the sealing valve plate 2 moves downward and closes the valve port 13, and the solenoid valve is in a closed state. When the electromagnetic control unit 4 moves up the valve core 3 to open the water outlet hole 22, the back pressure chamber 15 is depressurized, and the hydraulic pressure in the wastewater inlet channel 11 is greater than the hydraulic pressure in the back pressure chamber 15, so that the sealing valve plate 2 moves up and opens the valve port 13, and the solenoid valve is in an open state.

[0025] In this embodiment, a raw water inlet channel 14 connected to the back pressure chamber 15 is provided on the valve body 1. When the valve is opened and closed, the wastewater in the wastewater inlet channel 11 does not pass through the inlet hole, which effectively prevents impurities in the medium from clogging the inlet hole of the sealing valve plate 2 and causing the solenoid valve to fail. This not only improves the service life and stability of the solenoid valve, but also eliminates the need to clean or replace the sealing valve plate 2, thereby reducing costs.

[0026] Furthermore, as a preferred embodiment, a mounting groove extending upward from the top of the valve chamber is communicated with the back pressure chamber 15, and the valve core 3 can be longitudinally slidably installed in the mounting groove.

[0027] Furthermore, as a preferred embodiment, the electromagnetic control unit 4 includes: an electromagnetic element 41 and a spring 42. The electromagnetic element 41 is arranged in the valve body 1 and surrounded by the outside of the valve core 3. The spring 42 is placed in the installation groove and is located between the valve core 3 and the bottom of the installation groove. In this embodiment, the electromagnetic element 41 is an existing conventional technology. When the electric solenoid valve is opened, the electromagnetic element 41 is energized to generate magnetic attraction, and the valve core 3 compresses the spring 42 to move upward and disengage from the blockage of the water outlet 22. When the solenoid valve is closed, the electromagnetic element 41 is de-energized, and the valve core 3 blocks the water outlet 22 under the elastic force of the spring 42.

[0028] Furthermore, as a preferred embodiment, in order to improve the sealing effect of the valve core 3 on the water outlet 22 , the bottom of the valve core 3 has a sealing rubber pad 31 , which cooperates with the water outlet 22 to seal.

[0029] Furthermore, as a preferred embodiment, in order to further improve the sealing effect of the valve core 3 on the water outlet 22, the top opening of the water outlet 22 is extended upward.

[0030] Furthermore, as a preferred embodiment, the water outlet 22 and the valve port 13 are coaxially arranged.

[0031] Furthermore, as a preferred embodiment, in order to improve the sealing effect of the sealing valve disc 2 on the valve port 13 , a sealing rubber pad 21 is provided at the bottom of the sealing valve disc 2 , and cooperates with the valve port 13 for sealing.

[0032] Furthermore, as a preferred embodiment, the bottom of the sealing valve plate 2 has an annular mounting groove, and the sealing rubber pad 21 is clamped in the annular mounting groove.

[0033] The above description is only a preferred embodiment of the present invention, and does not limit the implementation mode and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. An anti-fouling solenoid valve structure, comprising a valve body, a sealing valve disc, an electromagnetic control unit and a valve core, wherein the valve body is provided with a valve chamber, the valve chamber is provided with a valve port connecting a wastewater inlet channel and a wastewater outlet channel, the sealing valve disc can be longitudinally slidably arranged in the valve chamber for opening and closing the valve port, a back pressure cavity is formed between the sealing valve disc and the valve chamber, the sealing valve disc has a water outlet hole, one end of the valve core is longitudinally slidably arranged in the valve body, the electromagnetic control unit is arranged on the valve body, and is used to drive the valve core to slide longitudinally so that the other end of the valve core opens and closes the water outlet hole, characterized in that The valve body is also provided with a raw water inlet channel connected to the back pressure chamber. When the electromagnetic control unit presses down the valve core so that the other end of the valve core closes the water outlet, the sum of the hydraulic pressure in the raw water inlet channel and the pressure of the electromagnetic control unit pressing down the valve core is greater than the hydraulic pressure in the waste water inlet channel, so that the sealing valve plate moves downward and closes the valve port, and the solenoid valve is in a closed state. When the electromagnetic control unit moves up the valve core so that the valve core opens the water outlet, the back pressure chamber is depressurized, and the hydraulic pressure in the waste water inlet channel is greater than the hydraulic pressure in the back pressure chamber, so that the sealing valve plate moves up and opens the valve port, and the solenoid valve is in an open state.

2. The anti-fouling solenoid valve structure according to claim 1 is characterized in that: A mounting groove communicating with the back pressure chamber is extended upward from the top of the valve chamber, and the valve core can be longitudinally slidably mounted in the mounting groove.

3. The anti-fouling solenoid valve structure according to claim 2 is characterized in that: The electromagnetic control unit comprises: an electromagnetic element and a spring. The electromagnetic element is arranged in the valve body and surrounds the outside of the valve core. The spring is placed in the installation groove and located between the valve core and the groove bottom of the installation groove.

4. The anti-fouling solenoid valve structure according to claim 1 is characterized in that: The bottom of the valve core is provided with a sealing rubber pad, which cooperates with the water outlet hole for sealing.

5. The anti-fouling solenoid valve structure according to claim 4 is characterized in that: The top opening of the water outlet hole is extended upward.

6. The anti-fouling solenoid valve structure according to claim 1, characterized in that: The water outlet hole is coaxially arranged with the valve port.

7. The anti-fouling solenoid valve structure according to claim 6, characterized in that: The bottom of the sealing valve plate is provided with a sealing rubber pad, which cooperates with the valve port for sealing.

8. The anti-fouling and anti-clogging solenoid valve structure according to claim 7, characterized in that: The bottom of the sealing valve sheet is provided with an annular mounting groove, and the sealing rubber pad is clamped in the annular mounting groove.

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