CN216478966U

CN216478966U - Electromagnetic valve

Info

Publication number: CN216478966U
Application number: CN202123087538.5U
Authority: CN
Inventors: 俞舟; 康志军; 邱成
Original assignee: Zhejiang Dunan Artificial Environment Co Ltd
Current assignee: Zhejiang Dunan Artificial Environment Co Ltd
Priority date: 2021-12-07
Filing date: 2021-12-07
Publication date: 2022-05-10
Anticipated expiration: 2031-12-07

Abstract

The utility model provides a solenoid valve, include: the valve seat is provided with a valve port and a mounting cavity; the valve body is connected with the valve seat; the piston part is movably arranged in the valve body to open or close the valve port; the installation cavity is located on one side, away from the piston part, of the valve port, the throttling element is arranged in the installation cavity and provided with a throttling hole, and the flow area of the throttling hole is smaller than that of the valve port. By adopting the scheme, the throttling element is arranged on one side, away from the piston part, of the valve port in the mounting cavity, and the flow area of the throttling hole is set to be smaller than that of the valve port, so that when fluid passing through the valve port passes through the throttling hole, the flow area is reduced, the throttling element can play a throttling role, the flow of the fluid passing through the electromagnetic valve is limited, and the throttling function is realized. Through the technical scheme provided by the utility model, can solve the problem that the solenoid valve among the prior art does not have the throttle function.

Description

Electromagnetic valve

Technical Field

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

Background

At present, when the electromagnetic valve is used as a bypass function, the electromagnetic valve is often required to be connected with a throttling device in series for use, and the bypass flow is overlarge, so that the electromagnetic valve is required to be frequently switched on and off; in addition, the flow precision of the electromagnetic valve is not high, so that different electromagnetic valves have different flows. Therefore, it is necessary to design a solenoid valve having a throttle function.

SUMMERY OF THE UTILITY MODEL

The utility model provides a solenoid valve to the solenoid valve of solving among the prior art does not have the problem of throttle function.

In order to solve the above problem, the utility model provides a solenoid valve, include: the valve seat is provided with a valve port and a mounting cavity; the valve body is connected with the valve seat; the piston part is movably arranged in the valve body to open or close the valve port; the installation cavity is located on one side, away from the piston part, of the valve port, the throttling element is arranged in the installation cavity and provided with a throttling hole, and the flow area of the throttling hole is smaller than that of the valve port.

Further, the throttle member is detachably disposed in the mounting chamber.

Further, the mounting cavity has an internal thread, and the orifice has an external thread, and the external thread and the internal thread cooperate.

Furthermore, the throttling element is also provided with an operation hole, the operation hole is positioned on one side, away from the valve port, of the throttling hole, the operation hole is communicated with the throttling hole, a limiting surface is arranged in the operation hole, and the limiting surface is used for limiting the circumferential direction of a tool extending into the operation hole.

Further, the operation hole is a hexagonal hole.

Further, the valve seat is provided with a valve cavity, an inlet and an outlet, the outlet is communicated with the throttling hole, the inlet is communicated with the valve cavity, and the valve cavity is communicated with the valve port under the condition that the valve port is opened.

Furthermore, the electromagnetic valve also comprises a first connecting pipe and a second connecting pipe, the first connecting pipe is connected with the inlet, the second connecting pipe is connected with the outlet, and the axis of the first connecting pipe is perpendicular to the axis of the second connecting pipe.

Furthermore, the throttling element is of a columnar structure, the valve port, the throttle hole and the second connecting pipe are coaxially arranged, and the inner diameter of the second connecting pipe is larger than the outer diameter of the throttling element.

Further, the orifice member is provided in plural, the orifice holes of the plural orifice members have different flow areas, and any one of the plural orifice members is replaceably mounted in the mounting chamber.

Further, the piston part comprises a core iron and a plugging piece, the core iron is movably arranged in the valve body and is provided with a clamping groove, and the plugging piece is clamped in the clamping groove; the electromagnetic valve also comprises an attractor and an elastic piece, wherein the attractor is fixed in the valve body, and the elastic piece is positioned between the attractor and the core iron.

Further, a gap is formed between the outer wall of the core iron and the inner wall of the valve body, the core iron is provided with an axial balance hole and a radial balance hole, the axial balance hole is communicated with the radial balance hole, the radial balance hole is communicated with the gap, and the axial balance hole is communicated with the area of one side, facing the attractor, of the core iron.

Use the technical scheme of the utility model, a solenoid valve is provided, include: the valve seat is provided with a valve port and a mounting cavity; the valve body is connected with the valve seat; a piston part movably arranged in the valve body to open or close the valve port; the installation cavity is located on one side, away from the piston part, of the valve port, the throttling element is arranged in the installation cavity and provided with a throttling hole, and the flow area of the throttling hole is smaller than that of the valve port. By adopting the scheme, the throttling element is arranged on one side, away from the piston part, of the valve port of the mounting cavity, and the flow area of the throttling hole is set to be smaller than that of the valve port, so that when fluid passing through the valve port passes through the throttling hole, the flow area is reduced, the throttling element can play a throttling role, the flow of the fluid passing through the electromagnetic valve is limited, and the throttling function is realized; when the fluid is in a high-pressure gas state or a liquid state at the valve port, the circulation capacity is high, the fluid firstly passes through the valve port and then is throttled by the throttling element, so that the throttling influence is reduced, the throttling precision is high, and the throttling consistency is ensured. Wherein, with throttle member detachably set up in the installation cavity, can change the throttle member of unidimensional not according to the throughput of actual demand like this to satisfy the in-service use demand, improved the commonality of solenoid valve.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows a cross-sectional view of a solenoid valve provided by an embodiment of the present invention;

FIG. 2 shows a cross-sectional view of the orifice of FIG. 1;

FIG. 3 shows a bottom view of the orifice member of FIG. 1;

fig. 4 shows a cross-sectional view of the valve seat of fig. 1.

Wherein the figures include the following reference numerals:

10. a valve seat; 11. a valve port; 12. a mounting cavity; 13. a valve cavity; 14. an inlet; 15. an outlet;

20. a valve body;

30. a piston portion; 31. a core iron; 311. a card slot; 312. an axial balancing hole; 313. a radial balancing hole; 32. a blocking member;

40. a throttle member; 41. an orifice; 42. an operation hole;

50. a first adapter tube;

60. a second adapter tube;

70. an attractor.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

As shown in fig. 1 to 4, an embodiment of the present invention provides a solenoid valve, including: a valve seat 10, wherein the valve seat 10 is provided with a valve port 11 and a mounting cavity 12; a valve body 20 connected with the valve seat 10; a piston portion 30 movably disposed in the valve body 20 to open or close the valve port 11; the throttle 40, the installation cavity 12 is located in the side of the valve port 11 departing from the piston part 30, the throttle 40 is arranged in the installation cavity 12, the throttle 40 has a throttle hole 41, the flow area of the throttle hole 41 is smaller than the flow area of the valve port 11.

By adopting the scheme, the throttle member 40 is arranged on the side of the mounting cavity 12, which is positioned on the valve port 11 and is far away from the piston part 30, and the flow area of the throttle hole 41 is set to be smaller than that of the valve port 11, so that when fluid passing through the valve port 11 passes through the throttle hole 41, the flow area is reduced, and therefore the throttle hole 41 can play a role of throttling, the flow of the fluid passing through the electromagnetic valve is limited, and the throttling function is realized; and when the fluid is in a high-pressure gas state or a liquid state at the valve port 11, the circulation capacity is high, the fluid firstly passes through the valve port 11, and then the fluid is throttled by the throttling element 40, so that the throttling influence is reduced, the throttling precision is high, and the throttling consistency is ensured. Wherein, with throttle 40 detachably set up in installation cavity 12, can change the throttle 40 of different sizes according to the throughput of actual demand like this to satisfy the in-service use demand, improved the commonality of solenoid valve.

Also, the orifice member 40 is detachably provided in the installation cavity 12, which facilitates installation and replacement of the orifice member 40.

Wherein the mounting chamber 12 has an internal thread and the throttle element 40 has an external thread, which cooperates with the internal thread. Set up the internal thread in installation cavity 12, throttling element 40 sets up the external screw thread, through screw-thread fit, and is more stable, reliable to be convenient for installation and dismantlement.

Further, the throttling element 40 is provided with an operation hole 42, the operation hole 42 is located on the side, away from the valve port 11, of the throttle hole 41, the operation hole 42 is communicated with the throttle hole 41, and a limiting surface is arranged in the operation hole 42 and used for limiting the circumference of a tool extending into the operation hole 42. The operation hole 42 is provided to facilitate the installation and tightening of the throttle 40 by the installer. Wherein, set up spacing face in operation hole 42, can play limiting displacement to the instrument that stretches into in operation hole 42 in the circumference to screw up.

In the present embodiment, the operation hole 42 is a hexagonal hole. Set up operation hole 42 into hexagonal hole, the convenience cooperates with the instrument that stretches into in the operation hole 42 for it is lighter, convenient to operate. The tool is specifically an internal hexagonal wrench.

Specifically, the valve seat 10 has a valve chamber 13, an inlet port 14, and an outlet port 15, the outlet port 15 communicates with the orifice 41, the inlet port 14 communicates with the valve chamber 13, and the valve port 11 communicates with the valve chamber 13 when the valve port 11 is open. By communicating the outlet 15 with the orifice 41, the inlet 14 communicates with the valve chamber 13, so that fluid can enter the valve chamber 13 from the inlet 14, and when the valve port 11 is in an open condition, fluid in the valve chamber 13 enters the orifice 41 through the valve port 11 and finally flows out from the outlet 15.

Wherein the solenoid valve further comprises a first connecting pipe 50 and a second connecting pipe 60, the first connecting pipe 50 is connected with the inlet 14, the second connecting pipe 60 is connected with the outlet 15, and the axis of the first connecting pipe 50 is perpendicular to the axis of the second connecting pipe 60. A first connecting pipe 50 is arranged to be connected with the inlet 14, is convenient to be connected with an external structure, and can convey fluid to the inlet 14; a second nipple 60 is provided in connection with the outlet 15, facilitating connection to external structures and can be used to convey fluid out of the orifice 41 into the outlet 15.

In the present exemplary embodiment, the inlet opening 14 has a first stop surface, which abuts an end face of the first connecting piece 50, and the outlet opening 15 has a second stop surface, which abuts an end face of the second connecting piece 60. One end of the valve body 20 penetrates into the valve cavity 13, the valve body 20 is welded with the valve seat 10, the inner wall of the valve cavity 13 is provided with a third stop surface, and the third stop surface is abutted to the end face of the valve body 20. The first stop surface is abutted with the end surface of the first connecting pipe 50, so that the insertion depth of the first connecting pipe 50 can be limited, and the phenomenon that the fluid flow is influenced by the too-deep insertion is avoided; the second stop surface is abutted against the end surface of the second connecting pipe 60, so that the insertion depth of the second connecting pipe 60 can be limited, and the influence of over-deep insertion on fluid circulation is avoided; set up the terminal surface butt of third backstop face and valve body 20, can play spacing effect to valve body 20, avoid valve body 20 to insert too deeply, be convenient for location and assembly.

Further, the throttle 40 is a cylindrical structure, the valve port 11, the throttle hole 41 and the second connection pipe 60 are coaxially arranged, and the inner diameter of the second connection pipe 60 is larger than the outer diameter of the throttle 40. The throttling element 40 is arranged into a columnar structure, so that the throttling element is convenient to be matched with the installation cavity 12; the valve port 11, the throttle hole 41 and the second adapter 60 are coaxially arranged, so that the fluid flowing from the valve port 11 smoothly passes through the throttle hole 41 and finally reaches the second adapter 60; the inner diameter of the second connecting pipe 60 is larger than the outer diameter of the throttling element 40, so that the fluid can smoothly circulate.

Specifically, the orifice member 40 is provided in plural, the orifice holes 41 of the plural orifice members 40 have different flow areas, and any one of the plural orifice members 40 is replaceably attached to the mounting chamber 12. By adopting the arrangement, the throttling element 40 with different sizes can be replaced according to the flow of actual demands so as to meet the actual use demands and improve the universality of the electromagnetic valve. Moreover, for different throttling requirements, only the throttling element 40 needs to be replaced, a brand new electromagnetic valve does not need to be used, and the cost is reduced.

In the present embodiment, the piston portion 30 includes a core iron 31 and a blocking piece 32, the core iron 31 is movably disposed in the valve body 20, the core iron 31 has a clamping groove 311, and the blocking piece 32 is clamped in the clamping groove 311; the electromagnetic valve further comprises an attractor 70 and an elastic piece, wherein the attractor 70 is fixed in the valve body 20, and the elastic piece is located between the attractor 70 and the core iron 31. Through the arrangement mode, the attractor 70 is used for driving the core iron 31 to move in the valve body 20, and the core iron 31 drives the plugging piece 32 to move so as to open or close the valve port 11; the blocking piece 32 is clamped into the clamping groove 311, so that the blocking piece 32 can move along with the core iron 31. Specifically, the blocking member 32 may be a spherical member made of rubber.

Wherein, there is the clearance between the inner wall of valve body 20 and the outer wall of core iron 31, and core iron 31 has axial balancing hole 312 and radial balancing hole 313, and axial balancing hole 312 and radial balancing hole 313 communicate, and wherein, radial balancing hole 313 communicates with the clearance, and axial balancing hole 312 and the core iron 31 are towards the regional intercommunication of attractor 70 side. The axial balance hole 312 is communicated with the radial balance hole 313, and a gap is reserved between the outer wall of the core iron 31 and the inner wall of the valve body 20, so that the pressure at two ends of the core iron 31 can be balanced, and the core iron 31 can be moved normally.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A solenoid valve, comprising:

a valve seat (10), wherein the valve seat (10) is provided with a valve port (11) and a mounting cavity (12);

a valve body (20) connected to the valve seat (10);

a piston portion (30) movably disposed within the valve body (20) to open or close the valve port (11);

the throttle piece (40), the mounting cavity (12) is located on the side of the valve port (11) departing from the piston part (30), the throttle piece (40) is arranged in the mounting cavity (12), the throttle piece (40) is provided with a throttle hole (41), and the flow area of the throttle hole (41) is smaller than that of the valve port (11).

2. A solenoid valve according to claim 1, characterised in that said throttling element (40) is removably arranged inside said mounting chamber (12).

3. The solenoid valve according to claim 2, characterized in that said mounting cavity (12) has an internal thread and said orifice (40) has an external thread, said external thread and said internal thread cooperating.

4. A solenoid valve according to claim 3, characterized in that the orifice (40) further has an operation hole (42), the operation hole (42) is located on a side of the orifice (41) facing away from the valve port (11), the operation hole (42) is communicated with the orifice (41), and a limiting surface is arranged in the operation hole (42) and is used for limiting the circumference of a tool extending into the operation hole (42).

5. The solenoid valve according to claim 4, characterized in that the operating hole (42) is a hexagonal hole.

6. The solenoid valve according to claim 1, characterized in that the valve seat (10) has a valve chamber (13), an inlet (14) and an outlet (15), the outlet (15) communicating with the orifice (41), the inlet (14) communicating with the valve chamber (13), the valve port (11) communicating with the valve chamber (13) with the valve port (11) open.

7. A solenoid valve according to claim 6, characterised in that it further comprises a first nozzle (50) and a second nozzle (60), said first nozzle (50) being connected to said inlet (14) and said second nozzle (60) being connected to said outlet (15), the axis of said first nozzle (50) being perpendicular to the axis of said second nozzle (60).

8. The electromagnetic valve according to claim 7, wherein the throttle member (40) is a cylindrical structure, the valve port (11), the throttle hole (41) and the second connection pipe (60) are coaxially arranged, and an inner diameter of the second connection pipe (60) is larger than an outer diameter of the throttle member (40).

9. The solenoid valve according to claim 1, wherein said throttle member (40) is plural, a flow area of a throttle hole (41) of plural throttle members (40) is different, and any one of plural throttle members (40) is replaceably mounted in said mounting chamber (12).

10. The solenoid valve of claim 1,

the piston part (30) comprises a core iron (31) and a blocking piece (32), the core iron (31) is movably arranged in the valve body (20), the core iron (31) is provided with a clamping groove (311), and the blocking piece (32) is clamped in the clamping groove (311);

the electromagnetic valve further comprises an attractor (70) and an elastic piece, wherein the attractor (70) is fixed in the valve body (20), and the elastic piece is located between the attractor (70) and the core iron (31).

11. The electromagnetic valve according to claim 10, characterized in that a clearance is provided between the outer wall of the core iron (31) and the inner wall of the valve body (20), the core iron (31) is provided with an axial balancing hole (312) and a radial balancing hole (313), the axial balancing hole (312) is communicated with the radial balancing hole (313), wherein the radial balancing hole (313) is communicated with the clearance, and the axial balancing hole (312) is communicated with the area of the side of the core iron (31) facing the attractor (70).