Electromagnetic valve with high sealing performance

Abstract

According to the high-sealing-performance electromagnetic valve, after the electromagnetic coil is electrified, the electromagnetic coil is combined with the static iron core to generate an electromagnetic field to adsorb the movable iron core, so that the movable iron core moves close to the threaded cap along the sliding pipe. In the process, the annular clamping plate on the movable iron core moves close to the thread cap and is combined with the clamping ring to extrude the compression spring. The movable iron core drives the sealing plug and the sealing ring to move away from the flow guide opening in the process of moving close to the thread cap, the flow guide opening is opened, and the input opening communicates with the output opening through the flow guide opening. When the high-sealing-performance electromagnetic valve needs to be closed, the electromagnetic coil is powered off, the compression spring restores elastic deformation, under the elastic force effect of the compression spring, the annular clamping plate drives the movable iron core to move away from the thread cap, the sealing plug is extruded to the flow guide opening, and meanwhile the sealing ring abuts against the blocking block and is arranged around the flow guide opening in a sleeving mode. In other words, the sealing plug and the sealing ring form a double-sealing mechanism, and the sealing performance of the high-sealing-performance electromagnetic valve is greatly improved.

Description

Technical Field

[0001] The utility model relates to the field of electromagnetic valves, in particular to a high-sealing electromagnetic valve. Background Art

[0002] Solenoid valves are industrial equipment controlled by electromagnetics. They are basic components for controlling fluid automation. They are actuators and are not limited to hydraulic and pneumatic. They are used in industrial control systems to adjust the direction, flow, speed and other parameters of the medium. Solenoid valves can be used with different circuits to achieve the desired control, and the accuracy and flexibility of the control can be guaranteed. There are many types of solenoid valves, and different solenoid valves play a role in different positions of the control system. The most commonly used ones are check valves, safety valves, directional control valves, speed regulating valves, etc. Solenoid valves are divided into direct-acting solenoid valves, step-by-step direct-acting solenoid valves and pilot-operated solenoid valves in principle. When the direct-acting solenoid valve is energized, the electromagnetic coil generates electromagnetic force to lift the closing member from the valve seat and the valve opens. When the power is off, the electromagnetic force disappears, the spring presses the closing member against the valve seat, and the valve closes.

[0003] However, the traditional direct-acting solenoid valve, such as the technical solution disclosed in the patent with application number CN201910616567.4 and invention name "Solenoid Valve", will have the problem of reduced sealing performance and affecting the sealing stability of the solenoid valve during long-term use. Utility Model Content

[0004] Based on this, it is necessary to provide a high-sealing solenoid valve to address the technical problem that the sealing performance of traditional direct-acting solenoid valves will decrease during long-term use, affecting the sealing stability of the solenoid valve.

[0005] A high-sealing electromagnetic valve, the high-sealing electromagnetic valve comprising: an electromagnetic drive mechanism, a blocking mechanism and a valve body;

[0006] The electromagnetic drive mechanism comprises a shell, an electromagnetic coil, a static iron core, a sliding tube, a threaded cap and a gasket; the electromagnetic coil is arranged in the shell, the sliding tube is partially arranged in the shell, and the sliding tube passes through the electromagnetic coil; a threaded hole is opened at one end of the shell, a threaded head is arranged at one end of the sliding tube, the static iron core is accommodated in the part of the sliding tube close to the threaded head and is connected to the sliding tube; the threaded head is adapted to the threaded hole, the threaded head is inserted into the threaded hole and is screwed to the shell; the gasket is sleeved on the threaded head and abuts against the outer wall of the shell, the threaded cap is adapted to the threaded head, the threaded cap is sleeved on the threaded head and abuts against the side of the gasket facing away from the shell; a connecting seat is arranged at one end of the shell away from the threaded cap, and a threaded tube is arranged on the connecting seat;

[0007] The blocking mechanism comprises a locking ring, a moving iron core, a compression spring, a sealing plug and a sealing ring; the locking ring is accommodated in the threaded tube and connected to the threaded tube, and the sliding tube passes through the locking ring; the moving iron core is adapted to the sliding tube, and the moving iron core part is inserted in the sliding tube and is slidably connected to the sliding tube; an annular locking plate is provided at one end of the moving iron core exposed to the sliding tube; the compression spring is adapted to the moving iron core, the compression spring is sleeved on the moving iron core, one end of the compression spring abuts against the locking ring, and one end of the compression spring away from the locking ring abuts against the annular locking plate; a fixing groove is provided at one end of the moving iron core away from the threaded cap, the fixing groove is adapted to the sealing plug, the sealing plug is inserted in the fixing groove and connected to the moving iron core; an annular receiving groove is provided at one end of the sealing plug away from the threaded cap, the annular receiving groove is adapted to the sealing ring, and the sealing ring part is inserted in the annular receiving groove and connected to the sealing plug;

[0008] One side of the valve body is provided with an input port, and the other side is provided with an output port; a connecting pipe is provided at the top of the valve body, and an internal thread is provided on the tube wall of the connecting pipe, and the internal thread is adapted to the threaded pipe, and the threaded pipe is inserted into the connecting pipe and threadedly connected with the connecting pipe; a blocking block is provided within the valve body, and a guide port is provided on the blocking block, and the input port is connected with the output port through the guide port; under the elastic force of the compression spring, the annular retaining plate squeezes the sealing plug at the guide port through the moving iron core, and the sealing ring abuts against the blocking block and is sleeved around the guide port.

[0009] In one embodiment, a receiving ring is provided inside the end of the connecting tube away from the shell, and the blocking mechanism also includes a sealing ring, which abuts against the receiving ring, and the end of the threaded tube away from the shell abuts against the sealing ring.

[0010] In one of the embodiments, the receiving ring and the connecting pipe are integrally formed.

[0011] In one embodiment, the threaded head and the sliding tube are integrally formed.

[0012] In one embodiment, the connecting socket and the shell are integrally formed.

[0013] In one of the embodiments, the moving iron core and the annular retaining plate are integrally formed.

[0014] In one embodiment, the barrier block and the valve body are integrally formed.

[0015] In one embodiment, the threaded tube and the connecting seat are integrally formed.

[0016] In one of the embodiments, the retaining ring and the threaded tube are integrally formed.

[0017] In one embodiment, the connecting pipe and the valve body are integrally formed.

[0018] During the operation of the above-mentioned high-sealing solenoid valve, when it is necessary to open the high-sealing solenoid valve, the electromagnetic coil is energized and combines with the static iron core to generate an electromagnetic field to adsorb the moving iron core, so that the moving iron core moves along the sliding tube close to the threaded cap. In this process, the annular retaining plate on the moving iron core moves close to the threaded cap and combines with the retaining ring to squeeze the compression spring. In the process of moving close to the threaded cap, the moving iron core drives the sealing plug and the sealing ring to move away from the guide port, opens the guide port, and connects the input port with the output port through the guide port. When it is necessary to close the high-sealing solenoid valve, the electromagnetic coil is de-energized, and the compression spring restores its elastic deformation. Under the elastic force of the compression spring, the annular retaining plate drives the moving iron core to move away from the threaded cap, squeezing the sealing plug at the guide port, and at the same time, the sealing ring abuts against the barrier block and is sleeved around the guide port. In other words, the sealing plug and the sealing ring form a double sealing mechanism, which greatly improves the sealing performance of the high-sealing solenoid valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the structure of a high-sealing solenoid valve in one embodiment;

[0020] Figure 2 A schematic diagram of a partial structure of a high-sealing solenoid valve in one embodiment;

[0021] Figure 3 A schematic diagram of a partial structure of a high-sealing solenoid valve in one embodiment;

[0022] Figure 4 A schematic diagram of a partial structure of a high-sealing solenoid valve in one embodiment;

[0023] Figure 5 A schematic diagram of a partial structure of a high-sealing solenoid valve in one embodiment;

[0024] Figure 6 Schematic diagram of the structure of a valve body in one embodiment. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned purpose, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth so as to fully understand the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below. In the description of the utility model, it is necessary to understand that the orientation or position relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is based on the orientation or position relationship shown in the accompanying drawings, only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the utility model.

[0026] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0027] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0029] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0030] Please also read Figures 1 to 6 The utility model provides a high-sealing solenoid valve 10 , which includes an electromagnetic drive mechanism 100 , a blocking mechanism 200 and a valve body 300 .

[0031] The electromagnetic drive mechanism 100 includes a housing 110, an electromagnetic coil (not shown), a static iron core (not shown), a sliding tube 120, a threaded cap 130, and a gasket 140. The electromagnetic coil is disposed in the housing 110, and the sliding tube 120 is partially disposed in the housing 110, and the sliding tube 120 passes through the electromagnetic coil. A threaded hole 101 is provided at one end of the housing 110, and a threaded head 121 is provided at one end of the sliding tube 120. The static iron core is accommodated in a portion of the sliding tube 120 near the threaded head 121 and is connected to the sliding tube 120. The threaded head 121 is adapted to the threaded hole 101, and the threaded head 121 is inserted into the threaded hole 101 and is screwed to the housing 110. In this embodiment, the threaded head 121 and the sliding tube 120 are integrally formed to increase the structural strength and structural stability of the sliding tube 120. The gasket 140 is sleeved on the threaded head 121 and abuts against the outer wall of the housing 110. The threaded cap 130 is adapted to the threaded head 121. The threaded cap 130 is sleeved on the threaded head 121 and abuts against the side of the gasket 140 facing away from the housing 110. A connecting seat 111 is provided at one end of the housing 110 away from the threaded cap 130. In this embodiment, the connecting seat 111 is integrally formed with the housing 110 to increase the structural strength and structural stability of the housing 110. A threaded tube 112 is provided on the connecting seat 111. In this embodiment, the threaded tube 112 is integrally formed with the connecting seat 111 to increase the structural strength and structural stability of the connecting seat 111.

[0032] The blocking mechanism 200 includes a retaining ring 210, a moving iron core 220, a compression spring 230, a sealing plug 240 and a sealing ring 250. The retaining ring 210 is received in and connected to the threaded tube 112. In this embodiment, the retaining ring 210 and the threaded tube 112 are integrally formed. The sliding tube 120 passes through the retaining ring 210. The moving iron core 220 is adapted to the sliding tube 120, and the moving iron core 220 is partially inserted into the sliding tube 120 and slidably connected to the sliding tube 120. An annular retaining plate 221 is provided at one end of the moving iron core 220 exposed from the sliding tube 120. In this embodiment, the moving iron core 220 and the annular retaining plate 221 are integrally formed to increase the structural strength and structural stability of the moving iron core 220. The compression spring 230 is matched with the moving iron core 220, and the compression spring 230 is sleeved on the moving iron core 220. One end of the compression spring 230 abuts against the retaining ring 210, and the end of the compression spring 230 away from the retaining ring 210 abuts against the annular retaining plate 221. A fixing groove 201 is provided at the end of the moving iron core 220 away from the threaded cap 130, and the fixing groove 201 is matched with the sealing plug 240. The sealing plug 240 is inserted into the fixing groove 201 and connected to the moving iron core 220. An annular receiving groove 202 is provided at the end of the sealing plug 240 away from the threaded cap 130, and the annular receiving groove 202 is matched with the sealing ring 250. The sealing ring 250 is partially inserted into the annular receiving groove 202 and connected to the sealing plug 240.

[0033] An input port 301 is provided on one side of the valve body 300, and an output port 302 is provided on the other side. A connecting pipe 310 is provided on the top of the valve body 300, and an internal thread is provided on the pipe wall of the connecting pipe 310, and the internal thread is adapted to the threaded pipe 112, and the threaded pipe 112 is inserted into the connecting pipe 310 and screwed to the connecting pipe 310. A blocking block 320 is provided in the valve body 300. In this embodiment, the blocking block 320 is integrally formed with the valve body 300 to increase the structural strength and structural stability of the valve body 300. A guide port 303 is provided on the blocking block 320, and the input port 301 is connected to the output port 302 through the guide port 303. Under the elastic force of the compression spring 230 , the annular retaining plate 221 squeezes the sealing plug 240 at the guide port 303 through the movable iron core 220 , and the sealing ring 250 abuts against the blocking block 320 and is sleeved around the guide port 303 .

[0034] In order to further improve the sealing performance of the high-sealing solenoid valve 10, in one embodiment, a receiving ring 311 is provided inside the end of the connecting pipe 310 away from the housing 110, and the blocking mechanism 200 also includes a sealing ring 260, which abuts against the receiving ring 311. The end of the threaded pipe 112 away from the housing 110 abuts against the sealing ring 260. In one embodiment, the receiving ring 311 is integrally formed with the connecting pipe 310 to increase the structural strength and structural stability of the connecting pipe 310. In this embodiment, the connecting pipe 310 is integrally formed with the valve body 300 to increase the structural strength and structural stability of the valve body 300. In this way, the sealing ring 260 further improves the sealing performance of the high-sealing solenoid valve 10.

[0035] During the operation of the high-sealing solenoid valve 10, when it is necessary to open the high-sealing solenoid valve 10, the electromagnetic coil is energized to generate an electromagnetic field in combination with the static iron core to adsorb the moving iron core 220, so that the moving iron core 220 moves along the sliding tube 120 close to the threaded cap 130. In this process, the annular retaining plate 221 on the moving iron core 220 moves close to the threaded cap 130 and combines with the retaining ring 210 to squeeze the compression spring 230. In the process of moving close to the threaded cap 130, the moving iron core 220 drives the sealing plug 240 and the sealing ring 250 to move away from the guide port 303, opening the guide port 303, so that the input port 301 is connected with the output port 302 through the guide port 303. When the high-sealing electromagnetic valve 10 needs to be closed, the electromagnetic coil is powered off, the compression spring 230 recovers its elastic deformation, and under the elastic force of the compression spring 230, the annular clamping plate 221 drives the moving iron core 220 to move away from the threaded cap 130, squeezing the sealing plug 240 at the guide port 303, while the sealing ring 250 abuts against the blocking block 320 and is sleeved around the guide port 303. In other words, the sealing plug 240 and the sealing ring 250 form a double sealing mechanism, which greatly improves the sealing performance of the high-sealing electromagnetic valve 10.

[0036] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0037] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A high sealing solenoid valve, characterized in that: include: Electromagnetic drive mechanism, blocking mechanism and valve body; The electromagnetic drive mechanism comprises a shell, an electromagnetic coil, a static iron core, a sliding tube, a threaded cap and a gasket; the electromagnetic coil is arranged in the shell, the sliding tube is partially arranged in the shell, and the sliding tube passes through the electromagnetic coil; a threaded hole is opened at one end of the shell, a threaded head is arranged at one end of the sliding tube, the static iron core is accommodated in the part of the sliding tube close to the threaded head and is connected to the sliding tube; the threaded head is adapted to the threaded hole, the threaded head is inserted into the threaded hole and is screwed to the shell; the gasket is sleeved on the threaded head and abuts against the outer wall of the shell, the threaded cap is adapted to the threaded head, the threaded cap is sleeved on the threaded head and abuts against the side of the gasket facing away from the shell; a connecting seat is arranged at one end of the shell away from the threaded cap, and a threaded tube is arranged on the connecting seat; The blocking mechanism comprises a locking ring, a moving iron core, a compression spring, a sealing plug and a sealing ring; the locking ring is accommodated in the threaded tube and connected to the threaded tube, and the sliding tube passes through the locking ring; the moving iron core is adapted to the sliding tube, and the moving iron core part is inserted in the sliding tube and is slidably connected to the sliding tube; an annular locking plate is provided at one end of the moving iron core exposed to the sliding tube; the compression spring is adapted to the moving iron core, the compression spring is sleeved on the moving iron core, one end of the compression spring abuts against the locking ring, and one end of the compression spring away from the locking ring abuts against the annular locking plate; a fixing groove is provided at one end of the moving iron core away from the threaded cap, the fixing groove is adapted to the sealing plug, the sealing plug is inserted in the fixing groove and connected to the moving iron core; an annular receiving groove is provided at one end of the sealing plug away from the threaded cap, the annular receiving groove is adapted to the sealing ring, and the sealing ring part is inserted in the annular receiving groove and connected to the sealing plug; One side of the valve body is provided with an input port, and the other side is provided with an output port; a connecting pipe is provided at the top of the valve body, and an internal thread is provided on the tube wall of the connecting pipe, and the internal thread is adapted to the threaded pipe, and the threaded pipe is inserted into the connecting pipe and threadedly connected with the connecting pipe; a blocking block is provided within the valve body, and a guide port is provided on the blocking block, and the input port is connected with the output port through the guide port; under the elastic force of the compression spring, the annular retaining plate squeezes the sealing plug at the guide port through the moving iron core, and the sealing ring abuts against the blocking block and is sleeved around the guide port.

2. The high sealing solenoid valve according to claim 1, characterized in that: A receiving ring is arranged inside the end of the connecting pipe away from the shell, and the blocking mechanism also includes a sealing ring, which abuts against the receiving ring, and the end of the threaded pipe away from the shell abuts against the sealing ring.

3. The high sealing solenoid valve according to claim 2, characterized in that: The receiving ring and the connecting pipe are integrally formed.

4. The high-sealing solenoid valve according to claim 1, characterized in that: The threaded head and the sliding tube are integrally formed.

5. The high-sealing solenoid valve according to claim 1, characterized in that: The connecting seat and the shell are integrally formed.

6. The high-sealing solenoid valve according to claim 1, characterized in that: The moving iron core and the annular clamping plate are integrally formed.

7. The high-sealing solenoid valve according to claim 1, characterized in that: The barrier block and the valve body are integrally formed.

8. The high-sealing solenoid valve according to claim 1, characterized in that: The threaded tube and the connecting seat are integrally formed.

9. The high-sealing solenoid valve according to claim 1, characterized in that: The retaining ring and the threaded tube are integrally formed.

10. The high-sealing solenoid valve according to claim 1, characterized in that: The connecting pipe and the valve body are integrally formed.

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