A plunger assembly for a solenoid valve

Abstract

The utility model relates to the field of electromagnetic valve plunger, concretely relates to a plunger assembly for electromagnetic valve, including plunger body, the top fixedly connected with sealing plate of plunger body, the inner wall of sealing plate is equipped with through -hole, the outer wall of sealing plate is equipped with annular groove, the inside of sealing plate is provided with ejection mechanism, the upper surface of sealing plate is provided with auxiliary mechanism, sealing ring, sealing ring is connected in the inner wall of annular groove, ejection mechanism, ejection mechanism includes the jackscrew, the inner wall of through -hole is connected in sliding of jackscrew, one end of jackscrew is fixedly connected with hollow block, the other end of jackscrew is fixedly connected with the top block. Through the design of ejection mechanism, can from the inside of sealing plate with sealing ring to the outside of annular groove and eject, make sealing ring can have the force point and let staff take it from the inside of annular groove, thereby improve the convenience of sealing ring disassembly, and then facilitate staff to replace sealing ring.

Description

Technical Field

[0001] This utility model relates to the field of solenoid valve plungers, specifically to a plunger assembly for solenoid valves. Background Technology

[0002] The solenoid valve plunger is the core moving part of the solenoid valve. It is usually made of magnetic material and is driven by magnetic force when the solenoid coil is energized. It controls the flow of fluid or changes direction through reciprocating motion.

[0003] Solenoid valve plungers typically achieve sealing by creating annular grooves on their tops or surfaces and embedding elastic sealing rings such as O-rings or plug seals. However, under the high-frequency operation of solenoid valves, the repeated friction between the plunger and the valve body can cause the sealing rings to gradually wear, age, or even crack. Therefore, the plunger needs to have its sealing rings replaced regularly to maintain its sealing effect.

[0004] Currently, plunger seals are usually replaced manually. However, embedded designs present inconvenience during maintenance. Once the seal is stuck in the groove (such as an O-ring stuck in a deep groove), it lacks an effective force point, requiring sharp tools to pry it open during disassembly. Improper operation can easily scratch the plunger surface, leading to plunger damage. Therefore, it is necessary to invent a plunger assembly for solenoid valves to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a plunger assembly for a solenoid valve. By rotating the knob, and in conjunction with the sliding shaft and hollow block, a push rod can be driven to slide on the inner wall of the through hole. The sliding of the push rod can drive the push block to squeeze the sealing ring from the inside of the sealing ring, thereby causing the sealing ring to bulge outward. This allows the operator to grasp the sealing ring and remove it from the inside of the annular groove, thus enabling the sealing ring to be disassembled and replaced. This solves the problem that O-ring seals are stuck inside deep grooves and are difficult to remove, making the replacement of the sealing ring very troublesome.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a plunger assembly for a solenoid valve, comprising:

[0007] A plunger body, a sealing plate is fixedly connected to the top end of the plunger body, a through hole is opened on the inner wall of the sealing plate, an annular groove is opened on the outer wall of the sealing plate, an ejection mechanism is provided inside the sealing plate, and an auxiliary mechanism is provided on the upper surface of the sealing plate.

[0008] A sealing ring, which is snapped into the inner wall of the annular groove;

[0009] An ejection mechanism includes an ejector rod that is slidably connected to the inner wall of a through hole. A hollow block is fixedly connected to one end of the ejector rod, and a top block is fixedly connected to the other end of the ejector rod. A knob is rotatably connected to the inner wall of the sealing plate, and a sliding shaft is fixedly connected to the bottom of the knob. A spring is sleeved on the outer wall of the ejector rod.

[0010] Preferably, the auxiliary mechanism includes a slider that is slidably connected to the top of the sealing plate, and a connecting plate is fixedly connected to the side wall of the slider.

[0011] Preferably, an arc-shaped plate is fixedly connected to the end of the connecting plate away from the slider, and the arc-shaped plate is an arc-shaped plate structure.

[0012] Preferably, a connecting rod is hinged to the top of the slider, and the end of the connecting rod away from the slider is hinged to the top of the knob.

[0013] Preferably, a sealing gasket is fixedly connected to the side of the top block near the top rod, and the sealing gasket is attached to the inner wall of the through hole.

[0014] Preferably, one end of the spring is fixedly connected to the side wall of the hollow block, the other end of the spring is fixedly connected to the inner wall of the sealing plate, and the outer wall of the sliding shaft is attached to the inner wall of the hollow block.

[0015] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0016] This invention, through the design of the ejection mechanism, allows the sealing ring to be ejected from the inside of the sealing plate towards the outside of the annular groove, providing a force point for the sealing ring to be removed from the inside of the annular groove by the operator. This improves the ease of disassembling the sealing ring and facilitates its replacement. Furthermore, through the design of the auxiliary mechanism, the sealing ring can be opened during installation, allowing it to be quickly inserted into the annular groove, thereby improving the ease of installation and the efficiency of sealing ring replacement. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the overall structure of the sealing plate of this utility model;

[0020] Figure 3This is a cross-sectional structural diagram of the sealing plate of this utility model;

[0021] Figure 4 This is an exploded structural diagram of the sealing plate of this utility model;

[0022] Figure 5 This utility model Figure 4 A schematic diagram of the structure viewed from below;

[0023] Figure 6 This utility model Figure 5 A magnified structural diagram at point A.

[0024] Legend:

[0025] 1. Plunger body; 2. Sealing ring; 3. Ejection mechanism; 31. Ejector rod; 32. Hollow block; 33. Ejector block; 34. Knob; 35. Sliding shaft; 36. Spring; 37. Sealing gasket; 4. Auxiliary mechanism; 41. Slider; 42. Connecting plate; 43. Arc plate; 44. Connecting rod; 5. Sealing plate; 6. Through hole; 7. Annular groove. Detailed Implementation

[0026] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0027] This utility model provides, for example Figures 1-3 A plunger assembly for a solenoid valve is shown, comprising: a plunger body 1, a sealing ring 2, and an ejection mechanism 3;

[0028] A sealing plate 5 is fixedly connected to the top of the plunger body 1. A through hole 6 is opened on the inner wall of the sealing plate 5, and an annular groove 7 is opened on the outer wall of the sealing plate 5. An ejection mechanism 3 is provided inside the sealing plate 5, and an auxiliary mechanism 4 is provided on the upper surface of the sealing plate 5.

[0029] The sealing ring 2 is engaged with the inner wall of the annular groove 7. The annular groove 7 can limit the sealing ring 2 and prevent the sealing ring 2 from shifting while the plunger body 1 is moving.

[0030] The ejection mechanism 3 includes an ejector rod 31, which is slidably connected to the inner wall of the through hole 6. One end of the ejector rod 31 is fixedly connected to a hollow block 32, and the other end of the ejector rod 31 is fixedly connected to an ejector block 33. By sliding the ejector rod 31 in conjunction with the ejector block 33, the sealing ring 2 can be squeezed out of the annular groove 7, thereby pushing the sealing ring 2 out of the annular groove 7 so that the operator can remove the sealing ring 2 from the inside of the annular groove 7. The inner wall of the sealing plate 5 is rotatably connected to a knob 34, and the bottom of the knob 34 is fixedly connected to a sliding shaft 35. The outer wall of the sliding shaft 35 is attached to the inner wall of the hollow block 32. When the knob 34 is rotated, the sliding shaft 35 will move against the inner wall of the hollow block 32 and push the hollow block 32, so that the hollow block 32 pushes the ejector rod 31 to slide on the inner wall of the through hole 6. A spring 36 is sleeved on the outer wall of the ejector rod 31.

[0031] like Figures 3-5 and Figure 6 As shown, a sealing gasket 37 is fixedly connected to the side of the top block 33 near the top rod 31. The sealing gasket 37 is attached to the inner wall of the through hole 6. The sealing gasket 37 can seal the connection between the top rod 31 and the through hole 6. One end of the spring 36 is fixedly connected to the side wall of the hollow block 32, and the other end of the spring 36 is fixedly connected to the inner wall of the sealing plate 5. The elasticity of the spring 36 can drive the hollow block 32 to slide and reset on the inner wall of the sealing plate 5.

[0032] like Figures 2-4 As shown, the auxiliary mechanism 4 includes a slider 41, which is slidably connected to the top of the sealing plate 5. A connecting plate 42 is fixedly connected to the side wall of the slider 41. When the slider 41 slides, it will drive the connecting plate 42 to move synchronously. At this time, the connecting plate 42 will drive the arc plate 43 to move synchronously. The arc plate 43 is fixedly connected to the end of the connecting plate 42 away from the slider 41. The arc plate 43 is an arc-shaped plate structure. By moving the arc plate 43, the sealing ring 2 can be opened so that the sealing ring 2 can be re-inserted into the interior of the annular groove 7, thereby improving the ease of installation of the sealing ring 2.

[0033] like Figures 2-4 As shown, a connecting rod 44 is hinged to the top of the slider 41. The end of the connecting rod 44 away from the slider 41 is hinged to the top of the knob 34. Rotating the knob 34, in conjunction with the connecting rod 44, can drive the slider 41 to slide on the top of the sealing plate 5.

[0034] The working principle of this utility model is as follows: When it is necessary to disassemble the sealing ring 2, turn the knob 34 to drive the sliding shaft 35 to move against the inner wall of the hollow block 32. At this time, the sliding shaft 35 will push the hollow block 32, causing the hollow block 32 to push the push rod 31 and compress the spring 36. At this time, the push rod 31 will slide on the inner wall of the through hole 6 and drive the push block 33 to gradually approach the sealing ring 2. Through the sliding of the push rod 31 and the push block 33, the sealing ring 2 can be squeezed out of the annular groove 7, thereby pushing the sealing ring 2 out of the annular groove 7 so that the staff can take the sealing ring 2 out of the annular groove 7, improving the convenience of disassembling the sealing ring 2.

[0035] When the sealing ring 2 is removed from the annular groove 7 and a new sealing ring 2 needs to be reinstalled inside the annular groove 7, first place the sealing ring 2 on the upper surface of the sealing plate 5, so that the two sets of arc-shaped plates 43 are located inside the annulus of the sealing ring 2. Then, turn the knob 34 to push the connecting rod 44. At this time, the connecting rod 44 will push the slider 41. The slider 41 will slide on the top of the sealing plate 5 and gradually move away from the knob 34. While the slider 41 is sliding, it will drive the connecting plate 42 to move synchronously. At this time, the connecting plate 42 will drive the arc-shaped plates 43 to move synchronously and gradually move away from the knob 34. When the arc-shaped plates 43 move away from the knob 34, the two sets of arc-shaped plates 43 will move away from the knob 34. When plate 43 comes into contact with sealing ring 2 during its movement, it will compress sealing ring 2, causing it to deform and gradually approach the edge of sealing plate 5 under the pushing action of arc plate 43. When sealing ring 2 coincides with the edge of sealing plate 5, sealing ring 2 can be pushed down to fit against the surface of arc plate 43 and move downward to the annular groove 7. At this time, the knob 34 can be reversed, and at the same time, the connecting rod 44, slider 41 and connecting plate 42 will drive arc plate 43 to move and reset. Then, sealing ring 2 can be pressed into the annular groove 7 to make it fit into the annular groove 7, thus making it convenient for workers to install sealing ring 2.

[0036] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A plunger assembly for a solenoid valve, characterized by: include: A plunger body (1) is fixedly connected to a sealing plate (5) at its top end. The inner wall of the sealing plate (5) is provided with a through hole (6), and the outer wall of the sealing plate (5) is provided with an annular groove (7). An ejection mechanism (3) is provided inside the sealing plate (5), and an auxiliary mechanism (4) is provided on the upper surface of the sealing plate (5). A sealing ring (2) is snapped into the inner wall of the annular groove (7); The ejection mechanism (3) includes an ejector rod (31), which is slidably connected to the inner wall of the through hole (6). A hollow block (32) is fixedly connected to one end of the ejector rod (31), and an ejector block (33) is fixedly connected to the other end of the ejector rod (31). A knob (34) is rotatably connected to the inner wall of the sealing plate (5), and a sliding shaft (35) is fixedly connected to the bottom of the knob (34). A spring (36) is sleeved on the outer wall of the ejector rod (31).

2. A plunger assembly for a solenoid valve according to claim 1, wherein: The auxiliary mechanism (4) includes a slider (41) which is slidably connected to the top of the sealing plate (5), and a connecting plate (42) is fixedly connected to the side wall of the slider (41).

3. A plunger assembly for a solenoid valve according to claim 2, wherein: An arc-shaped plate (43) is fixedly connected to one end of the connecting plate (42) away from the slider (41). The arc-shaped plate (43) is an arc-shaped plate structure.

4. A plunger assembly for a solenoid valve according to claim 2, wherein: The top of the slider (41) is hinged to a connecting rod (44), and the end of the connecting rod (44) away from the slider (41) is hinged to the top of the knob (34).

5. A plunger assembly for a solenoid valve according to claim 4, characterized in that: The top block (33) is fixed to the side near the top rod (31) to connect a sealing gasket (37), which is attached to the inner wall of the through hole (6).

6. A plunger assembly for a solenoid valve according to claim 1, characterized in that: One end of the spring (36) is fixedly connected to the side wall of the hollow block (32), and the other end of the spring (36) is fixedly connected to the inner wall of the sealing plate (5). The outer wall of the sliding shaft (35) is attached to the inner wall of the hollow block (32).

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