CN212509673U

CN212509673U - Electromagnetic valve

Info

Publication number: CN212509673U
Application number: CN202020977855.0U
Authority: CN
Inventors: 王璐; 赖品格
Original assignee: Dongguan Galen Electronic Co ltd
Current assignee: Dongguan Galen Electronic Co ltd
Priority date: 2020-06-02
Filing date: 2020-06-02
Publication date: 2021-02-09
Anticipated expiration: 2030-06-02

Abstract

The utility model relates to a solenoid valve, including valve body, spacing core, awl core subassembly and coil pack, valve body integrated into one piece has spacing sleeve pipe, spacing core threaded connection is in spacing sleeve pipe, the coil pack sets up on spacing sleeve pipe outer circumference, awl core subassembly coaxial setting is in spacing sleeve pipe, awl core subassembly includes iron system awl core and in proper order coaxial setting at the spring of awl core hole, top seal, the both ends of spring are connected with spacing core, top seal respectively, top seal closes the valve port in the valve body under the effect of spring, the coil pack can produce the magnetic force that drives the awl core to move in order to open the valve port; the valve body is provided with a liquid inlet pipe, a liquid outlet pipe and a pressure relief pipe which are communicated, the liquid outlet pipe is positioned below the valve port, and a pressure relief check valve is arranged in the pressure relief pipe. The limiting core of the utility model is connected with the valve body through screw thread, and the sealing performance of the electromagnetic valve is improved through the sealing ring; the pressure relief check valve is used for ensuring that the pressure of the fluid in the electromagnetic valve is relieved when the pressure reaches a threshold value, so that the safety of the electromagnetic valve is ensured.

Description

Electromagnetic valve

Technical Field

The utility model relates to a solenoid valve technical field, in particular to solenoid valve.

Background

The electromagnetic valve is a basic element for controlling fluid, is widely applied to the fields of industrial production, vehicles and aerospace, has different requirements on the structure, sensitivity and reliability of the electromagnetic valve due to different application occasions, is mostly used for controlling the fluid such as oil, gas and the like on industrial equipment, is not suitable for small household appliances such as a steam mop, a steam microwave oven, a steam dust collector, a steam iron, a mobile air conditioner and the like, and therefore, the existing electromagnetic valve needs to be further improved so as to be better applied to the small household appliances.

SUMMERY OF THE UTILITY MODEL

In order to solve the defects of the prior art, the utility model provides a solenoid valve.

In order to achieve the above purpose, the utility model provides a technical scheme does: a solenoid valve comprises a valve body, a limiting core, a conical core assembly and a coil assembly, wherein the valve body is integrally formed with a limiting sleeve, the limiting core is in threaded connection with the inside of the limiting sleeve, the coil assembly is arranged on the outer circumference of the limiting sleeve, the conical core assembly is coaxially arranged in the limiting sleeve, the conical core assembly comprises an iron conical core, a spring and a top sealing piece, the spring and the top sealing piece are sequentially and coaxially arranged in an inner hole of the conical core, two ends of the spring are respectively connected with the limiting core and the top sealing piece, the top sealing piece closes a valve port in the valve body under the action of the spring, and the coil assembly can generate magnetic force for driving the conical core to move so as to open the valve port; the valve body is provided with a liquid inlet pipe, a liquid outlet pipe and a pressure relief pipe which are communicated, the liquid outlet pipe is positioned below the valve port, and a pressure relief check valve is arranged in the pressure relief pipe.

In the above technical scheme, a sealing ring is arranged between the limiting sleeve and the limiting core, and the sealing ring is an O-shaped sealing ring.

In the technical scheme, the inner wall of the inner hole of the conical core is provided with a step surface, the top sealing piece is provided with a convex edge abutted against the step surface, and the outer wall of the conical core is provided with a water flowing groove along the axial direction.

In the technical scheme, the limiting core is provided with a mounting groove on the end surface in the limiting sleeve, and a copper ring is embedded in the mounting groove.

In the technical scheme, the coil assembly comprises a shell, a C-shaped framework, a wire frame, a coil and three metal sheets forming a three-pin plug, the coil is wound on the wire frame, the framework, the wire frame, the coil and the three metal sheets are wrapped by the shell and fixed, the framework is provided with a round hole, a limiting sleeve penetrates through the round hole of the framework and the middle hole of the wire frame, and a gasket and a fixing nut are arranged at the joint of the limiting core and the shell.

In the technical scheme, the live wire metal sheet and the zero wire metal sheet of the three-pin plug are electrically connected with the coil, and the grounding metal sheet is electrically connected with the framework through a pot of nails.

In the technical scheme, the liquid inlet pipe is perpendicular to the liquid outlet pipe and the pressure relief pipe, and the liquid inlet pipe is provided with external threads.

In the above technical scheme, the valve body is integrally formed with a linear convex block at the other end opposite to the liquid inlet pipe.

In the above technical scheme, the pressure release check valve includes plunger, pressure release spring, fixed head, the pressure release spring sets up between fixed head and plunger, fixed head and pressure release pipe inner wall threaded connection, the plunger closes the pressure release mouth in the pressure release pipe under pressure release spring's effect.

In the above technical scheme, the valve body is provided with a connecting pipe, the connecting pipe is provided with the other end of the valve body opposite to the pressure relief pipe along a straight line, and the connecting pipe is a second liquid outlet pipe or a liquid supplementing pipe.

The utility model has the advantages that the structure is reasonable, the design is novel, the practicability is strong, the limiting core is connected with the valve body through the screw thread, the sealing performance of the electromagnetic valve is improved through the sealing ring, the sealing force is strong, and the fluid leakage is avoided; the pressure relief check valve is used for ensuring that the pressure of fluid in the electromagnetic valve is relieved when the pressure reaches a threshold value, so that the safety of the electromagnetic valve is ensured; the compression amount of the spring is adjusted through the limiting core which can be rotationally adjusted, so that the distance between the top sealing piece and the valve port after the coil is electrified is adjusted, and the flow rate flowing to the liquid outlet pipe is controlled; the three-pin plug is fixed on the shell in a plastic coating mode, so that the structure of the electromagnetic valve is simplified, and the electromagnetic valve is convenient to install on a using device.

Drawings

Fig. 1 is a schematic view of the exploded structure of the present invention.

Fig. 2 is a schematic sectional structure of the present invention.

In the figure: 1. a valve body; 11. a limiting sleeve; 12. a liquid inlet pipe; 13. a liquid outlet pipe; 14. a second liquid outlet pipe; 15. a pressure relief pipe; 16. a bump; 17. a valve port; 18. a pressure relief port; 21. a copper ring; 22. a seal ring; 23, a limiting core; 24. a gasket; 25. a nut; 31. a top seal; 311. a convex edge; 32. a conical core; 33. a water trough; 34. a spring; 41. a housing; 42. a framework; 43. a metal sheet; 44. pan nails; 45. a coil; 46. a wire frame; 51. a fixed head; 52. a pressure relief spring; 53. and a plunger.

Detailed Description

The embodiments of the present invention will be described with reference to the accompanying drawings.

As shown in fig. 1-2, an electromagnetic valve includes a valve body 1, a limiting core 23, a conical core 32 assembly and a coil 45 assembly, the valve body 1 is integrally formed with a limiting sleeve 11, the limiting core 23 is screwed into the limiting sleeve 11, the coil 45 assembly is disposed on the outer circumference of the limiting sleeve 11, the conical core 32 assembly is coaxially disposed in the limiting sleeve 11, the conical core 32 assembly includes an iron conical core 32, a spring 34 and a top seal 31 coaxially disposed in an inner hole of the conical core 32 in sequence, two ends of the spring 34 are respectively connected with the limiting core 23 and the top seal 31, the top seal 31 closes a valve port 17 in the valve body 1 under the action of the spring 34, and the coil 45 assembly can generate a magnetic force for driving the conical core 32 to move to open the valve port 17; the valve body 1 is provided with a liquid inlet pipe 12, a liquid outlet pipe 13 and a pressure relief pipe 15 which are communicated, the liquid outlet pipe 13 is positioned below the valve port 17, and a pressure relief one-way valve is arranged in the pressure relief pipe 15.

A sealing ring 22 is arranged between the limiting sleeve 11 and the limiting core 23, and the sealing ring 22 is an O-shaped sealing ring 22.

The inner wall of the inner hole of the conical core 32 is provided with a step surface, the top sealing piece 31 is provided with a convex edge 311 which is abutted against the step surface, and the outer wall of the conical core 32 is provided with a water flowing groove 33 along the axial direction.

The limiting core 23 is positioned on the end face in the limiting sleeve 11 and is provided with a mounting groove, and a copper ring 21 is embedded in the mounting groove.

The coil 45 assembly comprises a shell 41, a C-shaped framework 42, a wire frame 46, a coil 45 and three metal sheets 43 forming a three-pin plug, wherein the coil 45 is wound on the wire frame 46, the framework 42, the wire frame 46, the coil 45 and the three metal sheets 43 are wrapped and fixed through the shell 41, the framework 42 is provided with a round hole, a limiting sleeve 11 penetrates through the round hole of the framework 42 and a middle hole of the wire frame 46, and a gasket 24 and a fixing nut 25 are arranged at the connecting position of the limiting core 23 and the shell 41.

The live wire metal sheet 43 and the zero wire metal sheet 43 of the three-pin plug are electrically connected with the coil 45, and the grounding metal sheet 43 is electrically connected with the framework 42 through a pot of nails 44.

The liquid inlet pipe 12 is perpendicular to the liquid outlet pipe 13 and the pressure relief pipe 15, and the liquid inlet pipe 12 is provided with external threads.

The valve body 1 is integrally formed with a linear projection 16 at the other end opposite to the liquid inlet pipe 12.

The pressure relief check valve comprises a plunger 53, a pressure relief spring 52 and a fixed head 51, wherein the pressure relief spring 52 is arranged between the fixed head 51 and the plunger 53, the fixed head 51 is in threaded connection with the inner wall of the pressure relief pipe 15, and the plunger 53 closes a pressure relief opening 18 in the pressure relief pipe 15 under the action of the pressure relief spring 52.

The valve body 1 is provided with a connecting pipe, the other end of the valve body 1 opposite to the pressure relief pipe 15 is arranged along a straight line on the connecting pipe, and the connecting pipe is a second liquid outlet pipe 14.

The framework 42 is an iron framework 42, the limiting sleeve 11 is an iron sleeve, the limiting core 23 is an iron core, and the conical core 32 is an iron conical core 32.

When the coil 45 is in a power-off state, the conical core 32 moves towards the valve port 17 under the combined action of the self weight and the spring 34, the top sealing piece 31 in the conical core 32 seals the valve port 17, and fluid enters from the liquid inlet pipe 12 and flows to the second liquid outlet pipe 14; when the coil 45 is electrified to generate an electromagnetic field which attracts the cone core 32 to move towards the limiting core 23, the top sealing piece 31 opens the valve port 17, fluid entering from the liquid inlet pipe 12 is divided into two parts, one part flows to the second liquid outlet pipe 14, and the other part flows to the liquid outlet pipe 13 from the valve port 17; when the pressure of the fluid entering the solenoid valve from the liquid inlet pipe 12 is greater than the elastic force of the pressure relief spring 52 (threshold value), the fluid in the solenoid valve will push open the plunger 53 and flow out from the pressure relief port 18, so as to complete the pressure relief of the solenoid valve; the end face of the limiting core 23 is provided with a straight groove, because the magnetic force generated after the coil 45 is electrified is fixed, the limiting core 23 can be screwed through a screwdriver to adjust the compression amount of the spring 34, so that the elastic force of the spring 34 on the conical core 32 and the top sealing piece 31 is changed, the distance between the top sealing piece 31 and the valve port 17 after the coil 45 is electrified is adjusted, and the flow rate flowing to the liquid outlet pipe 13 is controlled.

The utility model has reasonable structure, novel design and strong practicability, the limiting core 23 is connected with the valve body 1 through screw thread, the sealing performance of the electromagnetic valve is improved through the sealing ring 22, the sealing force is strong, and the fluid leakage is avoided; the pressure relief check valve is used for ensuring that the pressure of fluid in the electromagnetic valve is relieved when the pressure reaches a threshold value, so that the safety of the electromagnetic valve is ensured; the compression amount of the spring 34 is adjusted through the limiting core 23 which can be rotationally adjusted, so that the distance between the top sealing piece 31 and the valve port 17 after the coil 45 is electrified is adjusted, and the flow rate flowing to the liquid outlet pipe 13 is controlled; the structure of the electromagnetic valve is simplified by fixing the three-pin plug on the shell 41 in a plastic-coated manner, and the electromagnetic valve is convenient to install on a using device.

The above is not intended to limit the technical scope of the present invention, and any modifications, equivalent changes and modifications to the above embodiments are all within the scope of the present invention.

Claims

1. An electromagnetic valve is characterized by comprising a valve body, a limiting core, a conical core assembly and a coil assembly, wherein the valve body is integrally formed with a limiting sleeve, the limiting core is in threaded connection with the inside of the limiting sleeve, the coil assembly is arranged on the outer circumference of the limiting sleeve, the conical core assembly is coaxially arranged in the limiting sleeve, the conical core assembly comprises an iron conical core, a spring and a top sealing piece, the spring and the top sealing piece are sequentially and coaxially arranged in an inner hole of the conical core, two ends of the spring are respectively connected with the limiting core and the top sealing piece, the top sealing piece closes a valve port in the valve body under the action of the spring, and the coil assembly can generate magnetic force for driving the conical core to move so as to open the valve port; the valve body is provided with a liquid inlet pipe, a liquid outlet pipe and a pressure relief pipe which are communicated, the liquid outlet pipe is positioned below the valve port, and a pressure relief check valve is arranged in the pressure relief pipe.

2. The electromagnetic valve according to claim 1, wherein a sealing ring is arranged between the limiting sleeve and the limiting core, and the sealing ring is an O-shaped sealing ring.

3. The electromagnetic valve according to claim 2, wherein the inner wall of the inner bore of the conical core is provided with a step surface, the top sealing member is provided with a convex edge abutting against the step surface, and the outer wall of the conical core is axially provided with a water through groove.

4. The electromagnetic valve according to claim 3, wherein the limiting core is provided with a mounting groove on the end surface inside the limiting sleeve, and a copper ring is embedded in the mounting groove.

5. The electromagnetic valve according to claim 4, wherein the coil assembly comprises a shell, a C-shaped framework, a wire frame, a coil and three metal sheets forming a three-pin plug, the coil is wound on the wire frame, the framework, the wire frame, the coil and the three metal sheets are fixed by plastic coating of the shell, the framework is provided with a round hole, the limiting sleeve is arranged in the round hole of the framework and the middle hole of the wire frame in a penetrating mode, and the limiting core is provided with a gasket and a fixing nut at the connecting position of the limiting core and the shell.

6. The solenoid valve of claim 5 wherein said hot and neutral blades of said three-prong plug are electrically connected to said coil and said ground blade is electrically connected to said bobbin by a pin.

7. A solenoid valve according to claim 6 wherein the inlet and outlet pipes and the pressure relief pipe are perpendicular to each other, the inlet pipe being externally threaded.

8. The electromagnetic valve according to claim 7, wherein the valve body is integrally formed with a linear projection at the other end opposite to the liquid inlet pipe.

9. The electromagnetic valve according to claim 8, wherein the pressure relief check valve comprises a plunger, a pressure relief spring and a fixed head, the pressure relief spring is arranged between the fixed head and the plunger, the fixed head is in threaded connection with the inner wall of the pressure relief pipe, and the plunger closes a pressure relief opening in the pressure relief pipe under the action of the pressure relief spring.

10. The electromagnetic valve according to any one of claims 1 to 9, wherein the valve body is provided with a connecting pipe, the connecting pipe is arranged at the other end of the valve body opposite to the pressure relief pipe along a straight line, and the connecting pipe is a second liquid outlet pipe or a second liquid supplementing pipe.