Electromagnetic valve with anti-blocking function

Abstract

This utility model discloses a solenoid valve with anti-clogging function, including a valve body with an inlet and an outlet at both ends. A flow control component and a first filter component are disposed inside the inlet of the valve body, adjacent to the flow control component. A sealing component is installed at the open end of the valve body. An electromagnetic control component is disposed adjacent to the sealing component on the outside of the valve body, with a first chamber between the electromagnetic control component and the sealing component. A second filter component is disposed between the flow control component and the sealing component, and is threadedly connected to the valve body. The pore size of the second filter component is smaller than that of the first filter component. This utility model achieves dual filtration through the first and second filter components, resulting in better filtration and preventing a large amount of impurities from entering the first chamber. Simultaneously, only small-particle impurities accumulate inside the valve body, avoiding frequent cleaning of the solenoid valve.

Description

Technical Field

[0001] This utility model belongs to the field of electromagnetic valve technology, specifically relating to an electromagnetic valve with anti-clogging function. Background Technology

[0002] With the improvement of people's living standards, almost every household now owns a washing machine. However, due to varying water quality in different regions, washing machines frequently leak, causing damage to users' homes. The washing machine's inlet solenoid valve, as the core actuator controlling water flow, directly determines the overall performance and user experience. During washing machine operation, the biggest challenge faced by traditional solenoid valves is the clogging problem caused by the complexity of water quality. When the water in the pipeline contains many impurities or the solenoid valve is idle for a long time, impurities easily accumulate in key areas such as the back pressure chamber side holes and the valve core sealing surface, ultimately leading to valve failure. A patent with publication number CN206592621U discloses a solenoid valve, including a solenoid valve body, an input pipe on the solenoid valve body, a filter pipe connected to the input pipe, a filter screen inside the filter pipe, and the filter pipe sleeved on the input pipe. A rotating plate is hinged to the outer wall of the input pipe. Existing solenoid valves simply have an external filter in the inlet pipe, resulting in poor filtration. Impurities can easily enter the valve, causing it to malfunction. Furthermore, the external filter at the inlet end is prone to accumulating large particles, affecting water intake efficiency and requiring frequent cleaning. Therefore, a solenoid valve with anti-clogging capabilities is needed to overcome these difficulties. Summary of the Invention

[0003] This invention addresses the problems existing in the prior art by designing a solenoid valve with anti-clogging function. This invention uses a first filter component and a second filter component for dual filtration, resulting in better filtration effect and preventing a large amount of impurities from entering the first chamber; at the same time, only small-particle impurities accumulate in the valve body, avoiding frequent cleaning of the solenoid valve.

[0004] The objective of this invention is achieved through the following technical solution: a solenoid valve with anti-clogging function, comprising a valve body, wherein an inlet and an outlet are respectively provided at both ends of the valve body; a flow control component and a first filter component are provided in the inlet of the valve body, the first filter component being arranged adjacent to the flow control component; a sealing component is installed at the open end of the valve body; an electromagnetic control component is provided on the outside of the valve body adjacent to the sealing component, and a first chamber is provided between the electromagnetic control component and the sealing component; a second filter component is provided between the flow control component and the sealing component, the second filter component being threadedly connected to the valve body; the filter aperture of the second filter component is smaller than the filter aperture of the first filter component.

[0005] Preferably, the electromagnetic control component includes a plastic-encapsulated coil and an iron core, wherein the plastic-encapsulated coil controls the movement of the iron core relative to the sealing component when energized.

[0006] Preferably, the sealing assembly is provided with a flow hole, which is located between the first chamber and the second filter assembly; the valve body is provided with a water outlet channel communicating with the water outlet, and in the default state, the sealing assembly abuts against the top of the water outlet channel.

[0007] In the default state, the sealing component rests against the water outlet channel, and the electromagnetic control component is de-energized, so the inlet and outlet cannot conduct electricity. Water flows along the flow hole and converges in the first chamber. When the sealing coil is energized, the iron core moves away from the sealing component, allowing water in the first chamber to enter the water outlet channel through the holes on the sealing component. This reduces the pressure in the first chamber, causing the sealing component to undergo elastic deformation; the water outlet channel then fully opens, generating a large flow force.

[0008] Preferably, the second filter assembly includes a filter element body, on which a filter screen layer for filtering impurities is provided; a first thread is provided on the outer side of the filter element body, and a second thread is provided inside the valve body.

[0009] Preferably, the dimensions of the first thread and the second thread are set to each other; the valve body has a first step, and when the filter element body is threadedly connected to the valve body, the filter element body abuts against the first step.

[0010] By incorporating a second filter assembly, impurities are again blocked by the filter screen, preventing large particles from entering the first chamber and ensuring the sealing assembly maintains its integrity. The filter element is threadedly connected to the valve body for easy installation.

[0011] Preferably, the flow control component includes a flow seat and a pressure reducing ring. The valve body has a second step inside, and the flow seat abuts against the second step and is tightly connected to the valve body. The pressure reducing ring is sleeved on the flow seat. The end of the flow control component near the inlet has a first filter component.

[0012] Preferably, the first filter assembly includes a first filter screen body and a second filter screen body. The first filter screen body is installed inside the valve body and abuts against the flow seat. The second filter screen body is sleeved on the outer layer of the first filter screen body and is tightly connected to the valve body.

[0013] Preferably, the outer layer of the second filter screen body is provided with a plurality of strip-shaped mounting protrusions arranged along the axial direction of the second filter screen body, and when the second filter screen body is installed in the valve body, the strip-shaped mounting protrusions abut against the inner wall of the valve body.

[0014] Preferably, the valve body is further provided with an accumulation section, which is disposed between the flow control component and the second filter component.

[0015] The flow control component here is a commonly used flow regulation device in existing technology, which facilitates the adjustment of the inlet water flow. A first filter body and a second filter body are installed here to perform preliminary filtration of the water entering the valve body, preventing a large amount of impurities from entering the valve body. The pore size of the first filter body is smaller than that of the filter layer, and the pore size of the second filter body is also smaller than that of the filter layer. This allows for further filtration by the second filter assembly, filtering out relatively large impurities and preventing a large amount of impurities from entering the first chamber. Since the accumulation section is located between the flow control component and the second filter assembly, it is also located between the second and first filter assemblies. This causes impurities to accumulate within the accumulation section. At this point, the particle size of the impurities within the accumulation section is small, allowing them to accumulate for a long time, thus avoiding frequent cleaning of the valve body.

[0016] Compared with the prior art, the present invention has the following advantages: 1. The water flow entering the valve body is filtered twice by the first filter component and the second filter component, resulting in better filtration effect; 2. The second filter component is set on the outer layer of the first chamber, which prevents large particles of impurities from entering the first chamber, thereby enabling the sealing component and the electromagnetic control component to control the opening and closing of the solenoid valve normally; 3. By setting up the accumulation part, small particles of impurities can be accumulated in the accumulation part for a long time, avoiding frequent cleaning of the valve body. Attached Figure Description

[0017] Figure 1 This is a perspective view of the present utility model;

[0018] Figure 2 This is a diagram of the internal structure of the present invention;

[0019] Figure 3 This is an exploded view of the present invention;

[0020] Figure 4 This is a diagram of the internal structure of the valve body;

[0021] The diagram shows the following markings: 1. Valve body; 2. Inlet; 3. Outlet; 4. Flow control component; 41. Flow seat; 42. Pressure reducing ring; 5. First filter component; 51. First filter screen body; 52. Second filter screen body; 53. Strip mounting protrusion; 6. Sealing component; 61. Flow hole; 7. Electromagnetic control component; 71. Plastic-sealed coil; 72. Iron core; 8. First chamber; 9. Second filter component; 91. Filter element body; 92. Filter screen layer; 93. First thread; 10. Outlet channel; 11. Second thread; 12. First step; 13. Second step; 14. Accumulation section. Detailed Implementation

[0022] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings:

[0023] like Figures 1 to 4 As shown, this embodiment discloses a solenoid valve with anti-clogging function, including a valve body 1, with an inlet 2 and an outlet 3 at both ends of the valve body 1; a flow control component 4 and a first filter component 5 are provided in the inlet 2 of the valve body 1, the first filter component 5 being arranged adjacent to the flow control component 4; a sealing component 6 is installed at the open end of the valve body 1, and an electromagnetic control component 7 is provided on the outside of the valve body 1 adjacent to the sealing component 6, with a first chamber 8 between the electromagnetic control component 7 and the sealing component 6; a second filter component 9 is provided between the flow control component 4 and the sealing component 6, the second filter component 9 being threadedly connected to the valve body 1; the filter aperture of the second filter component 9 is smaller than the filter aperture of the first filter component 5.

[0024] The electromagnetic control component 7 includes a plastic-encapsulated coil 71 and an iron core 72. When the plastic-encapsulated coil 71 is energized, it controls the movement of the iron core 72 relative to the sealing component 6. The sealing component 6 has a flow hole 61, which is located between the first chamber 8 and the second filter component 9. The valve body 1 has a water outlet channel 10 communicating with the water outlet 3. In the default state, the sealing component 6 abuts against the top of the water outlet channel 10. The second filter component 9 includes a filter element body 91, which has a filter screen layer 92 for filtering impurities. The outer side of the filter element body 91 has a first thread 93, and the valve body 1 has a second thread 11. The dimensions of the first thread 93 and the second thread 11 are mutually set. The valve body 1 has a first step 12, and when the filter element body 91 is threadedly connected to the valve body 1, the filter element body 91 abuts against the first step 12.

[0025] The flow control assembly 4 includes a flow seat 41 and a pressure reducing ring 42. A second step 13 is provided inside the valve body 1. The flow seat 41 abuts against the second step 13 and is tightly connected to the valve body 1. The pressure reducing ring 42 is sleeved on the flow seat 41. A first filter assembly 5 is provided at the end of the flow control assembly 4 near the inlet 2. The first filter assembly 5 includes a first filter screen body 51 and a second filter screen body 52. ​​The first filter screen body 51 is installed inside the valve body 1 and abuts against the flow seat 41. The second filter screen body 52 is sleeved on the outer layer of the first filter screen body 51 and is tightly connected to the valve body 1. The outer layer of the second filter screen body 52 has several strip-shaped mounting protrusions 53 arranged axially along the second filter screen body 52. ​​When the second filter screen body 52 is installed inside the valve body 1, the strip-shaped mounting protrusions 53 abut against the inner wall of the valve body 1. An accumulation portion 14 is also provided inside the valve body 1, and the accumulation portion 14 is located between the flow control assembly 4 and the second filter assembly 9.

[0026] The specific operation process of this embodiment is as follows: In the default state, the sealing component 6 abuts against the water outlet channel 10, and the electromagnetic control component 7 is de-energized. Therefore, the inlet 2 and outlet 3 cannot be connected. Water flows along the flow hole 61 and converges in the first chamber 8. When the sealing coil 71 is energized, the iron core 72 moves away from the sealing component 6, allowing water in the first chamber 8 to enter the water outlet channel 10 along the holes on the sealing component 6. This reduces the pressure in the first chamber 8, causing the sealing component 6 to undergo elastic deformation. The water outlet channel 10 then fully opens, generating a large force. By setting the second filter component 9, impurities are again blocked by the filter screen layer 92, preventing large particles from entering the first chamber 8, thus maintaining the complete seal of the sealing component 6. Here, the filter body 91 is threadedly connected to the valve body 1 for easy installation.

[0027] The flow control component 4 here is a commonly used flow regulation device in the prior art, which facilitates the adjustment of the inlet water flow. A first filter body 51 and a second filter body 52 are set up here to perform preliminary filtration of the water entering the valve body 1, preventing a large amount of impurities from entering the valve body 1. The filtration aperture of the first filter body 51 is smaller than that of the filter layer 92, and the filtration aperture of the second filter body 52 is also smaller than that of the filter layer 92. Thus, the water is filtered again by the second filter component 9, filtering out relatively large impurities and preventing a large amount of impurities from entering the first chamber 8. Since the accumulation part 14 is located between the flow control component 4 and the second filter component 9, the accumulation part 14 is also located between the second filter component 14 and the first filter component 5. Impurities will accumulate in the accumulation part 14. At this time, the particle size of the impurities in the accumulation part 14 is small, and the impurities can accumulate in the accumulation part 14 for a long time, thereby avoiding frequent cleaning of the valve body 1.

[0028] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A solenoid valve with anti-clogging function, comprising a valve body (1), characterized in that, The valve body (1) has an inlet (2) and an outlet (3) at its two ends respectively; the inlet (2) of the valve body (1) is provided with a flow control component (4) and a first filter component (5), the first filter component (5) and the flow control component (4) are arranged adjacent to each other; a sealing component (6) is installed at the open end of the valve body (1), an electromagnetic control component (7) is provided on the outside of the valve body (1) and is arranged adjacent to the sealing component (6), a first chamber (8) is provided between the electromagnetic control component (7) and the sealing component (6); a second filter component (9) is provided between the flow control component (4) and the sealing component (6), the second filter component (9) is threadedly connected to the valve body (1); the filter aperture of the second filter component (9) is smaller than the filter aperture of the first filter component (5).

2. The solenoid valve with anti-clogging function according to claim 1, characterized in that, The electromagnetic control component (7) includes a plastic-encapsulated coil (71) and an iron core (72). When the plastic-encapsulated coil (71) is energized, it controls the movement of the iron core (72) relative to the sealing component (6).

3. The solenoid valve with anti-clogging function according to claim 1, characterized in that, The sealing assembly (6) is provided with a flow hole (61), which is located between the first chamber (8) and the second filter assembly (9); the valve body (1) is provided with a water outlet channel (10) communicating with the water outlet (3), and the sealing assembly (6) abuts against the top of the water outlet channel (10) in the default state.

4. The solenoid valve with anti-clogging function according to claim 1, characterized in that, The second filter assembly (9) includes a filter body (91), on which a filter screen layer (92) for filtering impurities is provided; a first thread (93) is provided on the outer side of the filter body (91), and a second thread (11) is provided inside the valve body (1).

5. The solenoid valve with anti-clogging function according to claim 4, characterized in that, The dimensions of the first thread (93) and the second thread (11) are set to each other; the valve body (1) is provided with a first step (12), and when the filter body (91) is threadedly connected to the valve body (1), the filter body (91) abuts against the first step (12).

6. The solenoid valve with anti-clogging function according to claim 1, characterized in that, The flow control component (4) includes a flow seat (41) and a pressure reducing ring (42). The valve body (1) has a second step (13) inside. The flow seat (41) abuts against the second step (13) and the flow seat (41) is tightly connected to the valve body (1). The pressure reducing ring (42) is sleeved and installed on the flow seat (41). The flow control component (4) has a first filter component (5) at the end near the inlet (2).

7. The solenoid valve with anti-clogging function according to claim 6, characterized in that, The first filter assembly (5) includes a first filter body (51) and a second filter body (52). The first filter body (51) is installed inside the valve body (1) and abuts against the flow seat (41). The second filter body (52) is sleeved on the outer layer of the first filter body (51) and is tightly connected to the valve body (1).

8. The solenoid valve with anti-clogging function according to claim 7, characterized in that, The outer layer of the second filter screen body (52) is provided with a plurality of strip-shaped mounting protrusions (53) arranged along the axial direction of the second filter screen body (52). When the second filter screen body (52) is installed in the valve body (1), the strip-shaped mounting protrusions (53) abut against the inner wall of the valve body (1).

9. The solenoid valve with anti-clogging function according to claim 1, characterized in that, The valve body (1) is also provided with an accumulation part (14), which is located between the flow control component (4) and the second filter component (9).

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