An easy-to-assemble three-way solenoid valve

Abstract

The present invention relates to the field of valves, and discloses an easy-to-assemble three-way solenoid valve, which includes an end cover, an electromagnetic assembly, an outer frame, a water stop, a sealing assembly, and a fixed back cover for fixing the end cover, the electromagnetic assembly, and the outer frame into a whole. A cavity and a water inlet, a normally open water outlet, and a normally closed water outlet communicated with the cavity are provided in the end cover. A separation sleeve is provided in the cavity. The sealing assembly includes a diaphragm sleeve and a connecting sleeve rod. The rod-shaped portion of the moving valve core in the electromagnetic assembly passes through the through holes of the diaphragm sleeve and the separation sleeve in turn. The diaphragm sleeve is sleeved on the sliding portion and sealed to the upper end of the valve core channel. The connecting sleeve rod passes through the separation sleeve and is sleeved on the rod-shaped portion, and is pressed against the diaphragm sleeve. The water stop is sleeved on the upper end of the connecting sleeve rod and is located directly below the normally closed water outlet. The present invention is not only easy to assemble and firmly installed, but also has good sealing and strong air tightness, and can prevent the metal material in the electromagnetic assembly from contacting with the circulating medium and causing rust and corrosion and other damage.

Description

Technical Field

[0001] The invention relates to the field of valves, in particular to an easily assembled three-way solenoid valve. Background Art

[0002] The electromagnetic water valve is a valve commonly used in life or industry to control the on and off of water pipes. The existing electromagnetic water valve has poor internal sealing. When in use, water will enter the valve body, which can easily corrode and rust the spring, iron core and other components inside the electromagnetic water valve, resulting in poor drainage, loss of the switch function, and reduced service life of the electromagnetic water valve. In addition, it can only be used to pass clean water, not some chemical solutions. The end cover needs to be fixed to the base with screws, and the assembly process is relatively complicated. After the electromagnetic valve is installed on the instrument by the customer, after long-term use or after the customer's instrument has been transported over a long distance, the screws are easy to loosen, causing the water valve to leak, and the electromagnetic component is easy to fail to work properly due to the humid environment or splashing water. Summary of the invention

[0003] The object of the present invention is to provide an easy-to-assemble three-way solenoid valve, which is not only easy to assemble and firmly installed, but also has good sealing and strong air tightness, and can prevent the metal material in the electromagnetic component from contacting with the circulating medium and causing damage such as rust and corrosion.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] The present invention discloses an easy-to-assemble three-way solenoid valve, which includes an end cover, an electromagnetic assembly, an outer frame, a water stop, a sealing assembly, and a fixed back cover for fixing the end cover, the electromagnetic assembly, and the outer frame into a whole; the end cover is provided with a cavity and a water inlet, a normally open water outlet, and a normally closed water outlet communicated with the cavity. A separation sleeve is provided in the cavity, and the separation sleeve is provided with a through hole that passes through from top to bottom, and an outlet communicated with the normally open water outlet is provided on the side. The sealing assembly includes a diaphragm sleeve and a connecting sleeve rod. The electromagnetic assembly includes a coil frame, a moving valve core, a fixed valve core, and an elastic member arranged between the moving valve core and the fixed valve core; the fixed valve core is fixedly arranged on the bottom of the outer frame, the coil is wound on the coil frame, the coil frame is arranged in the outer frame, and the coil frame is provided with a valve core channel for placing the moving valve core, the fixed valve core, and the elastic member. The moving valve core includes a sliding part that slides on the valve core channel and a rod-shaped part connected to the sliding part, and the rod-shaped part passes through the through holes of the diaphragm sleeve and the separation sleeve in sequence. The diaphragm sleeve is sleeved on the sliding part and sealed on the upper port of the valve core channel to prevent the fluid in the end cover from flowing into the valve core channel and corroding the iron core. The connecting sleeve rod passes through the separation sleeve and is sleeved on the rod-shaped part, and is pressed on the diaphragm sleeve. A gap for connecting the water inlet and the normally open water outlet is provided between the connecting sleeve rod and the separation sleeve sleeve. The water stop piece is sleeved on the upper end of the connecting sleeve rod and is located directly below the normally closed water outlet. The opening and closing of the normally closed water outlet and the water inlet are controlled by whether the top of the water stop piece is sealed with the normally closed water outlet, and the opening and closing of the normally open water outlet and the water inlet are controlled by whether the bottom of the water stop piece is sealed with the upper end of the separation sleeve.

[0006] When the coil is energized, the moving valve core and the fixed valve core are attracted, the moving valve core moves downward, the bottom of the water stop fits with the upper end of the separation sleeve, the gap is sealed, and the water inlet is not connected to the normally open water outlet; the top of the water stop is separated from the normally closed water outlet, and the water inlet is connected to the normally closed water outlet. That is, the normally closed water outlet is opened and the normally open water outlet is closed, so that the water inlet is only connected to the normally closed water outlet.

[0007] When the coil loses power, the moving valve core and the fixed valve core lose their force. Under the action of the elastic force of the elastic member, the moving valve core moves upward, the bottom of the water stop separates from the upper end of the separation sleeve, and the water inlet is connected to the normally open water outlet through the gap; the top of the water stop fits with the normally closed water outlet, and the water inlet is not connected to the normally closed water outlet. That is, the normally open water outlet is opened and the normally closed water outlet is closed, so that the water inlet is only connected to the normally open water outlet.

[0008] Furthermore, the fixed back cover is provided with a card interface and a riveted protrusion, the end cover is provided with a card slot matching the card interface, and the upper end of the outer frame is provided with a riveted notch matching the riveted protrusion; the fixed back cover is respectively connected to the end cover and the outer frame, thereby fixing the end cover, the electromagnetic assembly and the outer frame into a whole.

[0009] Furthermore, a first groove is provided on the outer wall of the rod-shaped portion of the movable valve core, and a first convex ring matching with the first groove is provided on the inner wall of the connecting sleeve rod.

[0010] Furthermore, a second convex ring is provided on the outer wall of the upper end of the connecting sleeve rod, and a second groove matching with the second convex ring is provided on the inner wall of the water stop member.

[0011] Furthermore, a boss is extended from the upper end of the coil frame corresponding to the valve core channel, a third groove is provided on the outer wall of the boss, and a third convex ring matched with the third groove is provided on the inner wall of the diaphragm sleeve.

[0012] Furthermore, a sealing groove is provided on the outer wall of the separation sleeve, and a sealing ring is provided on the sealing groove.

[0013] Furthermore, a fixing hole is provided on the fixed rear cover.

[0014] Furthermore, the elastic member is a spring. The lower end of the movable valve core is provided with a step for sleeve-connecting the spring.

[0015] Furthermore, the connecting sleeve rod is made of plastic.

[0016] Furthermore, the edge of the normally closed water outlet is provided with a circular ring protrusion for reducing the contact area between the normally closed water outlet and the upper end of the water stop member so as to increase the sealing performance.

[0017] The benefits of the present invention are:

[0018] 1. The present invention isolates and seals the electromagnetic assembly from the fluid in the end cover through the diaphragm sleeve and the connecting rod, effectively preventing the spring, iron core and other components of the electromagnetic assembly from corrosion and rust, and prolonging the life of the electromagnetic valve.

[0019] 2. The present invention provides a split sleeve on the end cover instead of integrally forming it, which is convenient for placing the water stop and for installing and assembling various components.

[0020] 3. The present invention replaces the screw connection on the market by fixing the back cover. The back cover is first clamped on the slot of the end cover, and then the riveted protrusion is riveted on the riveted notch at the upper end of the outer frame, and the electromagnetic component is pressed between the end cover and the outer frame. This is not only convenient and fast, but also avoids the problem of loose connection due to long-term use or vibration.

[0021] 4. The edge of the water outlet of the present invention is provided with a circular protrusion, which can effectively reduce the contact area between the normally closed water outlet and the upper end of the water stop member, thereby increasing the sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is an exploded structural diagram of the present invention.

[0023] Figure 2 It is a state diagram of the coil of the present invention when it loses power.

[0024] Figure 3 yes Figure 2 A partial enlarged view of point A in the middle.

[0025] Figure 4 It is a state diagram of the coil of the present invention when it is energized.

[0026] Figure 5 yes Figure 4 A partial enlarged view of point B in the middle.

[0027] Main component symbols:

[0028] 1. End cover, 11. Cavity, 12. Water inlet, 13. Normally open water outlet, 14. Slot, 15. Normally closed water outlet,

[0029] 151, circular protrusion;

[0030] 2. a separating sleeve, 21. a through hole, 22. an outlet, 23. a sealing groove, 24. a sealing ring;

[0031] 3. Electromagnetic assembly, 31. Coil frame, 311. Valve core channel, 312. Boss, 313. Third groove, 32.

[0032] Moving valve core, 321, sliding portion, 322, rod-shaped portion, 323, first groove, 324, step, 33, fixed valve core,

[0033] 34. Elastic parts;

[0034] 4. outer frame, 41. riveting notch;

[0035] 5. Fixing back cover, 51. Card interface, 52. Riveting bump, 53. Fixing hole;

[0036] 6. Water stop, 61. Second groove;

[0037] 7. Sealing assembly, 71. Diaphragm sleeve, 711. Third convex ring, 72. Connecting sleeve rod, 721. First convex ring,

[0038] 722, second convex ring;

[0039] 8. Gap. DETAILED DESCRIPTION

[0040] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0041] like Figures 1 to 5As shown, the present invention discloses an easily assembled three-way solenoid valve, which includes an end cover 1, an electromagnetic assembly 3, an outer frame 4, a fixed rear cover 5, a water stop 6 and a sealing assembly 7.

[0042] The end cover 1 is provided with a cavity 11 and a water inlet 12, a normally open water outlet 13 and a normally closed water outlet 15 connected to the cavity 11. A separation sleeve 2 is provided in the cavity 11, and the separation sleeve 2 is provided with a through hole 21 extending vertically and an outlet 22 connected to the normally open water outlet 13 on the side.

[0043] The sealing assembly 7 includes a diaphragm sleeve 71 and a connecting sleeve rod 72 .

[0044] The electromagnetic assembly 3 includes a coil, a coil frame 31, a moving valve core 32, a fixed valve core 33, and an elastic member 34 disposed between the moving valve core 32 and the fixed valve core 33. In this embodiment, the elastic member 34 uses a spring. The fixed valve core 33 is fixedly disposed on the bottom of the outer frame 4, and the coil is wound on the coil frame 31, and the coil frame 31 is disposed in the outer frame 4. A valve core channel 311 for placing the moving valve core 32, the fixed valve core 33 and the elastic member 34 is provided in the coil frame 31.

[0045] The movable valve core 32 includes a sliding portion 321 slidingly connected to the valve core channel 311 and a rod-shaped portion 322 connected to the sliding portion 321. The rod-shaped portion 322 passes through the diaphragm sleeve 71 and the through hole 21 of the separation sleeve 2 in sequence. The diaphragm sleeve 71 is sleeved on the sliding portion 321 and sealed at the upper end of the valve core channel 311 to prevent the fluid in the end cover 1 from flowing into the valve core channel 311 and corroding the iron core.

[0046] In order to better seal the diaphragm sleeve 71 and the upper end of the valve core channel 311, a boss 312 extends from the upper end of the coil frame 31 corresponding to the valve core channel 311, and a third groove 313 is provided on the outer wall of the boss 312. The inner wall of the diaphragm sleeve 71 is provided with a third convex ring 711 that matches the third groove 313.

[0047] The connecting rod 72 is made of plastic and is not easily corroded. The connecting rod 72 passes through the separation sleeve 2 and is sleeved on the rod-shaped portion 322, and is pressed against the diaphragm sleeve 71. A gap 8 for connecting the water inlet 12 and the water outlet 13 is provided between the connecting rod 72 and the separation sleeve 2.

[0048] The water stop member 6 is sleeved on the upper end of the connecting sleeve rod 72 and is located directly below the normally closed water outlet 15. The connection and disconnection of the normally closed water outlet 15 and the water inlet 12 are controlled by whether the top of the water stop member 6 and the normally closed water outlet 15 are sealed, and the connection and disconnection of the normally open water outlet 13 and the water inlet 12 are controlled by whether the bottom of the water stop member 6 and the upper end of the separating sleeve 2 are sealed.

[0049] When the coil is energized, the moving valve core 32 and the fixed valve core 33 are attracted, and the moving valve core 32 moves downward. The moving valve core 32 drives the bottom of the water stop 6 to fit with the upper end of the separation sleeve 2, and the gap is sealed. The water inlet 12 is not connected with the normally open water outlet 13. The top of the water stop 6 is separated from the normally closed water outlet 15, and the water inlet 12 is connected with the normally closed water outlet 15. That is, the water inlet 12 and the normally open water outlet 13 are in a closed state, and the water inlet 12 and the normally closed water outlet 15 are in an open state. Water flows out from the normally closed water outlet 15.

[0050] When the coil loses power, the moving valve core 32 and the fixed valve core 33 lose their force. Under the action of the elastic force of the elastic member 34, the moving valve core 32 moves upward, and the moving valve core 32 drives the bottom of the water stop member 6 to separate from the upper end of the separation sleeve 2, and the water inlet 12 is connected to the normally open water outlet 13 through the gap 8. The top of the water stop member 6 fits the normally closed water outlet 15, and the water inlet 12 is not connected to the normally closed water outlet 15. That is, the water inlet 12 and the normally open water outlet 13 are in an open state, and the water inlet 12 and the normally closed water outlet 15 are in a closed state. Water flows out from the normally open water outlet 13.

[0051] In order to prevent the water stop 6, the connecting rod 72 and the rod-shaped portion 322 of the moving valve core 32 from moving relative to each other, a first groove 323 is provided on the outer wall of the rod-shaped portion 322 of the moving valve core 32, and a first convex ring 721 matching the first groove 323 is provided on the inner wall of the connecting rod 72; a second convex ring 722 is provided on the outer wall of the upper end of the connecting rod 72, and a second groove 61 matching the second convex ring 722 is provided on the inner wall of the water stop 6. The water stop 6, the connecting rod 72 and the moving valve core 32 are assembled into a whole.

[0052] The end cover 1, the electromagnetic assembly 3 and the outer frame 4 are fixed into a whole by the fixed rear cover 5. The fixed rear cover 5 is provided with a card interface 51 and a riveted protrusion 52, the end cover 1 is provided with a card slot 14 matched with the card interface 51, and the upper end of the outer frame 4 is provided with a riveted notch 41 matched with the riveted protrusion 52. When fixing, the fixed rear cover 5 is firstly clamped on the card slot 14 of the end cover 1, and then the riveted protrusion 52 is riveted on the riveted notch 41 at the upper end of the outer frame 4, and the electromagnetic assembly 3 is pressed between the end cover 1 and the outer frame 4, which is not only convenient and quick but also avoids the problem of loose connection caused by long-term use or vibration.

[0053] In order to facilitate fixing the solenoid valve on the equipment, a fixing hole 53 is provided on the fixed rear cover 5 .

[0054] In order to achieve better sealing, a sealing groove 23 is provided on the outer wall of the separation sleeve 2 , and a sealing ring 24 is provided on the sealing groove 23 .

[0055] In order to better cooperate the spring with the movable valve core 32, a step 324 for sleeve-engaging the spring is provided at the lower end of the movable valve core 32.

[0056] In order to effectively reduce the contact area between the normally closed water outlet 15 and the upper end of the water stop member 6 and thus increase the sealing performance, a circular protrusion 151 is provided on the edge of the normally closed water outlet 15 .

[0057] In summary, the present invention uses a fixed back cover instead of screws for fixing, which is easy to assemble and firmly installed. The electromagnetic component is isolated and sealed from the fluid medium in the end cover by the sealing component, which can not only enhance the air tightness, but also prevent the metal material in the electromagnetic component from contacting with the circulating medium and causing rust and corrosion.

[0058] The above are only preferred specific implementations of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. An easily assembled three-way solenoid valve, characterized in that: It includes an end cover, an electromagnetic assembly, an outer frame, a water stopper, a sealing assembly, and a fixed back cover for fixing the end cover, the electromagnetic assembly, and the outer frame into a whole; the end cover is provided with a cavity and a water inlet, a normally open water outlet, and a normally closed water outlet communicated with the cavity; a separation sleeve is provided in the cavity, and the separation sleeve is provided with a through hole extending from top to bottom, and an outlet communicated with the normally open water outlet is provided on the side; The sealing assembly comprises a diaphragm sleeve and a connecting sleeve rod; The electromagnetic assembly includes a coil, a coil frame, a movable valve core, a fixed valve core, and an elastic member arranged between the movable valve core and the fixed valve core; the fixed valve core is fixedly arranged on the bottom of the outer frame, the coil is wound on the coil frame, the coil frame is arranged in the outer frame, and a valve core channel for placing the movable valve core, the fixed valve core and the elastic member is arranged in the coil frame; the movable valve core includes a sliding connection part slidingly connected to the valve core channel and a rod-shaped part connected to the sliding connection part, the rod-shaped part passes through the through holes of the diaphragm sleeve and the separation sleeve in sequence, a first groove is arranged on the outer wall of the rod-shaped part of the movable valve core, and a first convex ring matching the first groove is arranged on the inner wall of the connecting sleeve rod; The diaphragm sleeve is sleeved on the sliding part and sealed on the upper port of the valve core channel. A boss is extended from the upper end of the coil frame corresponding to the valve core channel. A third groove is provided on the outer wall of the boss. A third convex ring matching the third groove is provided on the inner wall of the diaphragm sleeve. The connecting sleeve rod passes through the separation sleeve and is sleeved on the rod-shaped part and pressed on the diaphragm sleeve. A gap for connecting the water inlet and the normally open water outlet is provided between the connecting sleeve rod and the separation sleeve sleeve. The water stop piece is sleeved on the upper end of the connecting sleeve rod and is located directly below the normally closed water outlet. The outer wall of the upper end of the connecting sleeve rod is provided with a second convex ring, and the inner wall of the water stop piece is provided with a second groove matched with the second convex ring; the normally closed water outlet and the water inlet are controlled by whether the top of the water stop piece is sealed with the normally closed water outlet, and the normally open water outlet and the water inlet are controlled by whether the bottom of the water stop piece is sealed with the upper end of the separation sleeve; The fixed rear cover is provided with a card interface and a riveted protrusion, the end cover is provided with a card slot matching the card interface, and the upper end of the outer frame is provided with a riveted notch matching the riveted protrusion; the fixed rear cover is respectively connected to the end cover and the outer frame, so that the end cover, the electromagnetic assembly and the outer frame are fixed into a whole.

2. The easily assembled three-way solenoid valve according to claim 1, characterized in that: A sealing groove is arranged on the outer wall of the separation sleeve, and a sealing ring is arranged on the sealing groove.

3. The easily assembled three-way solenoid valve according to claim 1, characterized in that: The fixed rear cover is provided with a fixing hole for fixing the solenoid valve.

4. The easily assembled three-way solenoid valve according to claim 1, characterized in that: The elastic member is a spring: the lower end of the movable valve core is provided with a step for sleeve-connecting the spring.

5. The easily assembled three-way solenoid valve according to claim 1, characterized in that: The connecting sleeve rod is made of plastic.

6. The easily assembled three-way solenoid valve according to claim 1, characterized in that: The edge of the normally closed water outlet is provided with a circular ring protrusion for reducing the contact area between the normally closed water outlet and the upper end of the water stop member so as to increase the sealing performance.

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