Electromagnetic valve with leakage-proof structure

Abstract

This utility model discloses a solenoid valve with a leak-proof structure, belonging to the technical field of leak-proof solenoid valves. It includes a valve seat, a valve core, and a tenon. A locking sleeve is fixedly installed at the end of the valve seat and is fixedly connected to an electromagnetic push-pull device via the locking sleeve. A guide sleeve is inserted into the electromagnetic push-pull device, and a spiral rotation groove is provided on the side of the guide sleeve. In use, the first end of the valve core is inserted into the valve seat to cut off the flow of the working fluid, while a positioning pin is inserted at the tail end of the valve core. Since the positioning pin is located in the spiral rotation groove, when the electromagnetic push-pull device pulls the guide sleeve along the axial direction, the positioning pin slides along the spiral rotation groove, thereby driving the valve core to rotate. Furthermore, since a tenon is provided in the middle of the valve core, the tenon is adapted to abut against the end of the locking sleeve. During the rotation of the valve core, the tenon falls into the groove located in the locking sleeve, at which point the valve core moves upward, completing the unlocking action.

Description

Technical Field

[0001] This utility model relates to the field of anti-leakage solenoid valve technology, specifically to an solenoid valve with an anti-leakage structure. Background Technology

[0002] Since solenoid valves are controlled by on / off signals, they are very easy to connect to computers. Therefore, in today's era of widespread computer use, solenoid valves have significant advantages. Furthermore, because solenoid valves have a simple structure, they are also relatively inexpensive. As a result, automatic control systems composed of solenoid valves are much simpler and more convenient than those using traditional valves.

[0003] However, since solenoid valves typically only have two states, on and off, the valve core can only be in two extreme positions. As the coil and spring inside the solenoid valve age, the magnetic force and elasticity weaken, causing the valve core and valve body to be unable to close completely. Consequently, the medium can flow through the gap between the valve core and valve body, causing internal leakage in the solenoid valve. Utility Model Content

[0004] Therefore, this utility model provides a solenoid valve with a leak-proof structure to solve the problem of internal leakage in solenoid valves caused by the aging of coils and springs in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] This utility model discloses a solenoid valve with a leak-proof structure, comprising:

[0007] A valve seat has a locking sleeve fixedly installed at its end. The locking sleeve is fixedly installed on the electromagnetic push-pull device, and a guide sleeve is movably inserted into the electromagnetic push-pull device.

[0008] The valve core has its first end inserted into the valve seat and its tail end fitted with a positioning pin. The positioning pin is adapted to slide in the spiral rotation groove, which is located on the side of the guide sleeve.

[0009] A tenon is provided in the middle of the valve core, and the tenon is adapted to abut against the end of the locking sleeve;

[0010] The electromagnetic push-pull device is adapted to push the guide sleeve to move along the axis. When the axis of the guide sleeve moves, the positioning pin slides along the spiral rotary groove and drives the tenon to fall into the groove located in the lock sleeve, thus completing the unlocking action.

[0011] Furthermore, the valve core includes:

[0012] The core column has a movable iron core coaxially fixed at its tail end, and the positioning pin is inserted on the movable iron core.

[0013] The plug has a tapered outer surface and is provided with multiple layers of sealing rings, which are adapted to abut against the valve seat to prevent internal fluid leakage.

[0014] Furthermore, the tenon includes a locking block, a slope, and a water-blocking ring. The locking block is embedded in the middle of the core post. The bottom of the locking block is connected to the water-blocking ring. After the unlocking action is completed, the water-blocking ring abuts against the lock sleeve.

[0015] The top of the lock block is provided with the slope, and after the locking action is completed, the slope abuts against the lock sleeve.

[0016] Furthermore, the guide sleeve includes a spline and a tube body, the helical rotary groove is disposed on the side of the tube body, the end of the tube body is connected to the spline, and the spline is adapted to slide within the electromagnetic push-pull device.

[0017] Furthermore, the electromagnetic push-pull device includes:

[0018] The housing has a direct-acting sleeve installed at its axis, an excitation coil installed on the outside of the direct-acting sleeve, and a guide bar arranged axially on the inner wall of the direct-acting sleeve. The spline is slidably mounted on the guide bar.

[0019] A spring, one end of which is connected to a fixed iron core, which is fixedly connected to the housing, and the other end of which abuts against the moving iron core;

[0020] The excitation coil is energized to generate an induced magnetic field, which in turn drives the tube to move along the guide bar under the action of the induced magnetic field.

[0021] Furthermore, the valve seat:

[0022] The valve body has inlet and outlet symmetrically arranged on both sides;

[0023] The partition has a through hole in the center. The partition and the valve body are integrally formed. The water inlet is connected to the water outlet through the through hole.

[0024] A mounting base is disposed on the top of the valve body and aligned with the through hole. The mounting base is fitted with a locking sleeve, and a valve core is inserted into the locking sleeve. The valve core is adapted to block the through hole.

[0025] Furthermore, the housing includes a support frame, a connecting seat, and bolt holes. The spring is installed inside the support frame. The end of the support frame is integrally formed with the connecting seat. The connecting seat has bolt holes, and fasteners are installed in the bolt holes. The fasteners also fix the mounting seat, locking sleeve, and connecting seat together.

[0026] This utility model has the following advantages:

[0027] The electromagnetic valve with a leak-proof structure disclosed in this utility model mainly uses an electromagnetic coil to generate a magnetic field to drive the valve core. Compared with the prior art, when the electromagnetic coil drives the valve core to close, it pushes the positioning pin to slide through the spiral rotation groove, and the positioning pin drives the valve core to rotate at a certain angle, so that the tenon can be pressed and fixed against the end of the locking sleeve. This allows the valve core to block the valve seat. Even if the magnetic force weakens due to the aging of the coil and spring, the electromagnetic valve will not have internal leakage problems. Attached Figure Description

[0028] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0029] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0030] Figure 1 Exploded view of the electromagnetic valve with a leak-proof structure provided by this utility model;

[0031] Figure 2 A perspective view of the valve core provided for this utility model;

[0032] Figure 3 A perspective view of the guide sleeve provided for this utility model;

[0033] Figure 4 A perspective view of the electromagnetic push-pull device provided by this utility model;

[0034] Figure 5 A perspective view of the valve seat provided for this utility model;

[0035] Figure 6 A perspective view of the housing provided for this utility model;

[0036] Figure 7 A schematic diagram of the existing solenoid valve structure provided for this utility model;

[0037] In the diagram: 1 Valve seat; 11 Valve body; 12 Inlet; 13 Baffle; 14 Outlet; 15 Through hole; 16 Mounting seat; 2 Electromagnetic push-pull device; 21 Housing; 211 Support frame; 212 Connecting seat; 213 Bolt hole; 22 Excitation coil; 23 Spring; 24 Fixed iron core; 25 Direct-acting sleeve; 26 Guide bar; 3 Valve core; 31 Core column; 32 Moving iron core; 33 Sealing ring; 34 Plug; 4 Positioning pin; 5 Spiral rotary groove; 6 Guide sleeve; 61 Spline; 62 Pipe body; 7 Tenon; 71 Locking block; 72 Slope; 73 Water-retaining ring; 8 Groove; 9 Locking sleeve. Detailed Implementation

[0038] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0039] Please refer to this as well. Figures 1-7 This utility model discloses a solenoid valve with a leak-proof structure. It primarily uses an electromagnetic coil to drive the valve core, simultaneously locking the valve core within the valve seat, thus improving the solenoid valve's sealing performance and its tolerance to fluids containing impurities. The specific technical solution disclosed in this utility model will be described below through specific embodiments.

[0040] In a specific embodiment of this utility model, the solenoid valve with a leak-proof structure mainly includes a valve seat 1, a valve core 3, and a tenon 7. A locking sleeve 9 is fixedly installed at the end of the valve seat 1 and is fixedly connected to an electromagnetic push-pull device 2 via the locking sleeve 9. A guide sleeve 6 is movably inserted into the electromagnetic push-pull device 2. A spiral rotation groove 5 is provided on the side of the guide sleeve 6. On the other hand, the first end of the valve core 3 is adapted to be inserted into the valve seat 1 to cut off the flow of the working fluid, while a positioning pin 4 is inserted at the tail end of the valve core 3. The positioning pin 4 is located within the spiral rotation groove 5. When the electromagnetic push-pull device 2 pushes the guide sleeve 6 to move along the axis, it will pull the guide sleeve 6 along the axial direction of the valve seat 1. At this time, the positioning pin 4 will slide along the spiral rotation groove 5, thereby driving the valve core 3 to rotate. Based on this, a tenon 7 is provided in the middle of the valve core 3. The tenon 7 is suitable for abutting against the end of the lock sleeve 9. During the rotation of the valve core 3, the tenon 7 will fall into the groove 8 located in the lock sleeve 9. At this time, the valve core 3 moves upward to complete the unlocking action.

[0041] In this embodiment, the guide sleeve 6 includes a spline 61 and a tube body 62. A spiral rotation groove 5 is provided on the side of the tube body 62. The end of the tube body 62 is connected to the spline 61. The spline 61 is adapted to slide within the electromagnetic push-pull device 2. Furthermore, by using the spline 61 in conjunction with the electromagnetic push-pull device 2, the tube body 62 can be prevented from rotating within the electromagnetic push-pull device 2. This allows the positioning pin 4 to move relative to the electromagnetic push-pull device 2, thereby rotating the valve core 3 to achieve the unlocking and locking actions.

[0042] In this embodiment, the tenon 7 includes a locking block 71, a slope 72, and a water-retaining ring 73. The locking block 71 is embedded in the middle of the core post 31. The locking block 71 rotates with the core post 31, and the top of the locking block 71 is provided with the slope 72, thereby completing the locking action and causing the slope 72 to abut against the lock sleeve 9. The bottom of the locking block 71 is connected to the water-retaining ring 73, and the water-retaining ring 73 abuts against the lock sleeve 9 after the unlocking action is completed.

[0043] In some embodiments, the valve core 3 includes a core column 31 and a plug 34. A movable iron core 32 is coaxially fixed at the tail end of the core column 31, and a positioning pin 4 is inserted on the movable iron core 32, thereby driving the movable iron core 32 and the core column 31 to rotate coaxially. On the other hand, the head end of the core column 31 is connected to the plug 34. The outer surface of the plug 34 is conical and has multiple layers of sealing rings 33 arranged thereon. The sealing rings 33 are adapted to abut against the valve seat 1 to prevent internal leakage of fluid. In actual use, because the slope 72 has a certain continuous slope, when the core column 31 rotates, the slope 72 gradually abuts against the end face of the locking sleeve 9, thereby causing the sealing rings 33 to be deformed under pressure, and effectively sealing the through hole 15 using the multiple layers of sealing rings 33 to prevent internal leakage of fluid.

[0044] In a specific embodiment of this utility model, the electromagnetic push-pull device 2 includes a housing 21, an excitation coil 22, and a spring 23. A direct-acting sleeve 25 is installed at the axis of the housing 21, and the direct-acting sleeve 25 can be separated from the housing 21. The excitation coil 22 is wound on the direct-acting sleeve 25. A guide bar 26 is arranged axially on the inner wall of the direct-acting sleeve 25. The spline 61 is slidably arranged on the guide bar 26 and moves linearly along the guide bar 26. After the direct-acting sleeve 25 is installed, the excitation coil 22 is energized to generate an induced magnetic field, which can drive the tube body 62 to move along the direction of the guide bar 26 under the action of the induced magnetic field. One end of the spring 23 is connected to the fixed iron core 24, which is fixedly connected to the housing 21. The other end of the spring 23 can pass through the tube 62 and abut against the moving iron core 32. When the plug 34 blocks the through hole 15, the elastic force of the spring 23 will act on the tube 62, allowing the positioning pin 4 to move relative to the spiral rotation groove 5, thereby driving the locking block 71 to rotate and complete the locking. Compared with the prior art, such as Figure 7 Simply using spring locking or magnetic unlocking methods offers higher reliability.

[0045] In this embodiment, the housing 21 includes a support frame 211, a connecting seat 212, and bolt holes 213. The spring 23 is located inside the direct-acting sleeve 25 and installed inside the support frame 211. The end of the support frame 211 is integrally formed with the connecting seat 212. Bolt holes 213 are arranged on the connecting seat 212. Fasteners are installed in the bolt holes 213, and the mounting seat 16, the locking sleeve 9, and the connecting seat 212 are fixed together by the fasteners.

[0046] In some embodiments, the valve seat 1 includes a valve body 11 and a partition 13. An inlet 12 and an outlet 14 are symmetrically arranged on both sides of the valve body 11, and the inlet 12 is connected to the outlet 14 via the partition 13. The partition 13 is inclinedly disposed within the valve body 11 and integrally formed with the valve body 11. On the other hand, the partition 13 has a through hole 15 at its center, through which the inlet 12 communicates with the outlet 14. The valve core 3 is adapted to block the through hole 15 to prevent the flow of the working fluid. The valve core 3 is adapted to block the through hole 15 by being provided with a mounting base 16, which is aligned with the through hole 15. A locking sleeve 9 is mounted on the mounting base 16, and the valve core 3 is inserted into the locking sleeve 9, thus the valve core 3 is adapted to block the through hole 15.

[0047] Although the present invention has been described in detail above with general descriptions and specific embodiments, some modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. A solenoid valve with a leak-proof structure, characterized in that, include: The valve seat (1) has a locking sleeve (9) fixedly installed at its end. The locking sleeve (9) is fixedly installed on the electromagnetic push-pull device (2). A guide sleeve (6) is movably inserted into the electromagnetic push-pull device (2). The valve core (3) is inserted into the valve seat (1) at its first end and a positioning pin (4) is installed at its tail end. The positioning pin (4) is adapted to slide in the spiral rotation groove (5). The spiral rotation groove (5) is located on the side of the guide sleeve (6). A tenon (7) is provided in the middle of the valve core (3), and the tenon (7) is adapted to abut against the end of the lock sleeve (9); The electromagnetic push-pull device (2) is adapted to push the guide sleeve (6) to move along the axis. When the axis of the guide sleeve (6) moves, the positioning pin (4) slides along the spiral rotary groove (5) and drives the tenon (7) to fall into the groove (8) located in the lock sleeve (9) to complete the unlocking action.

2. The solenoid valve with a leak-proof structure as described in claim 1, characterized in that, The valve core (3) includes: The core column (31) has a moving iron core (32) fixedly mounted on its tail end, and the positioning pin (4) is inserted on the moving iron core (32); The plug (34) has a conical outer surface and is provided with multiple layers of sealing rings (33), which are adapted to abut against the valve seat (1) to prevent internal leakage of fluid.

3. The solenoid valve with a leak-proof structure as described in claim 2, characterized in that, The tenon (7) includes a locking block (71), a slope (72) and a water-blocking ring (73). The locking block (71) is embedded in the middle of the core column (31). The bottom of the locking block (71) is connected to the water-blocking ring (73). After the unlocking action is completed, the water-blocking ring (73) abuts against the lock sleeve (9). The top of the locking block (71) is provided with the slope (72), and after the locking action is completed, the slope (72) abuts against the lock sleeve (9).

4. The solenoid valve with a leak-proof structure as described in claim 3, characterized in that, The guide sleeve (6) includes a spline (61) and a tube body (62). The spiral rotary groove (5) is provided on the side of the tube body (62). The end of the tube body (62) is connected to the spline (61). The spline (61) is adapted to slide within the electromagnetic push-pull device (2).

5. A solenoid valve with a leak-proof structure as described in claim 4, characterized in that, The electromagnetic push-pull device (2) includes: The housing (21) has a direct-acting sleeve (25) installed at its axis. An excitation coil (22) is installed on the outside of the direct-acting sleeve (25). A guide bar (26) is provided along the axial direction on the inner wall of the direct-acting sleeve (25). The spline (61) is slidably disposed on the guide bar (26). A spring (23) is connected at one end to a fixed iron core (24), which is fixedly connected to the housing (21), and the other end of the spring (23) abuts against the moving iron core (32); The excitation coil (22) is energized to generate an induced magnetic field, and under the action of the induced magnetic field, it drives the tube (62) to move along the direction of the guide bar (26).

6. A solenoid valve with a leak-proof structure as described in claim 5, characterized in that, The valve seat (1): The valve body (11) has an inlet (12) and an outlet (14) symmetrically arranged on both sides; The partition (13) has a through hole (15) at the center. The partition (13) and the valve body (11) are integrally formed. The water inlet (12) is connected to the water outlet (14) through the through hole (15). Mounting base (16) is disposed on the top of the valve body (11) and aligned with the through hole (15). The mounting base (16) is equipped with the locking sleeve (9). The locking sleeve (9) is inserted into the valve core (3), which is adapted to block the through hole (15).

7. A solenoid valve with a leak-proof structure as described in claim 6, characterized in that, The housing (21) includes a support frame (211), a connecting seat (212), and bolt holes (213). The spring (23) is installed inside the support frame (211). The end of the support frame (211) is integrally formed with the connecting seat (212). The connecting seat (212) is provided with bolt holes (213). Fasteners are installed in the bolt holes (213), and the mounting seat (16), the locking sleeve (9), and the connecting seat (212) are fixed together by the fasteners.

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