CN215805470U

CN215805470U - Plug-in mounting electromagnetic valve

Info

Publication number: CN215805470U
Application number: CN202121540269.0U
Authority: CN
Inventors: 刘传运; 罗占涛; 陶小好
Original assignee: Zhejiang Huaju Hydraulic Technology Co ltd
Current assignee: Zhejiang Sanshang Zhidi Technology Co ltd
Priority date: 2021-07-07
Filing date: 2021-07-07
Publication date: 2022-02-11
Anticipated expiration: 2031-07-07

Abstract

The utility model relates to the technical field of hydraulic pressure, in particular to a plug-in mounting electromagnetic valve. A plug-in mounting electromagnetic valve comprises a valve body assembly, a valve core assembly and a blocking assembly, wherein the valve core assembly is arranged in the valve body assembly, a plurality of oil ports are formed in the valve body assembly, the valve core assembly can move in the valve body assembly to enable the plurality of oil ports to be communicated or blocked, and the blocking assembly is arranged in the valve body assembly to enable the plurality of oil ports to be communicated in a one-way mode; the blocking assembly comprises a one-way part and a second blocking part, the one-way part is arranged between the first group of oil ports and the second group of oil ports, and the second blocking part is arranged on the valve core assembly; when the plug-in electromagnetic valve is powered off, the second blocking part blocks the oil from flowing from the second group of oil ports to the first group of oil ports, and the one-way part blocks the oil from flowing from the first group of oil ports to the second group of oil ports. The utility model has the advantages that: when the plug-in solenoid valve loses power, the blocking component can realize the bidirectional blocking function.

Description

Plug-in mounting electromagnetic valve

Technical Field

The utility model relates to the technical field of hydraulic pressure, in particular to a plug-in mounting electromagnetic valve.

Background

The plug-in solenoid valve is one of the control elements of the fluid control automatic system, and has the characteristics of low price, simplicity, quick action, easy installation, easy maintenance and the like.

When the plug-in solenoid valve is powered off, oil can enter the valve body assembly to push the valve core assembly away, so that the oil of the second group of oil ports flows to the first group of oil ports, and bidirectional stopping cannot be realized.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems, the utility model provides a plug-in mounting electromagnetic valve, which adopts the following technical scheme:

a plug-in mounting electromagnetic valve comprises a valve body assembly, a valve core assembly and a blocking assembly, wherein the valve core assembly is arranged in the valve body assembly, a plurality of oil ports are formed in the valve body assembly, the valve core assembly can move in the valve body assembly to enable the oil ports to be communicated or blocked, and the blocking assembly is arranged in the valve body assembly to enable the oil ports to be communicated in a one-way mode; the plurality of oil ports comprise a first group of oil ports and a second group of oil ports, the blocking assembly comprises a one-way part and a second blocking part, the one-way part is arranged between the first group of oil ports and the second group of oil ports, and the second blocking part is arranged on the valve core assembly; when the plug-in electromagnetic valve is powered off, the second blocking part blocks oil from flowing from the second group of oil ports to the first group of oil ports, and the one-way part blocks oil from flowing from the first group of oil ports to the second group of oil ports.

So set up, can realize two-wayly ending, when losing the electricity, the second blocks that the portion can block that the fluid of the second group's hydraulic fluid leaks to the first group's hydraulic fluid to, the one-way portion can block that the fluid of the first group's hydraulic fluid leaks to the second group's hydraulic fluid.

In one embodiment, the valve core assembly includes a main valve core and a pilot valve core, the main valve core is disposed in the valve body assembly, the main valve core is provided with a first damping hole and a second damping hole, the second damping hole is communicated with the second group of oil ports, and the pilot valve core can move relative to the main valve core to block the first damping hole; the valve core assembly is internally provided with a first cavity, the first cavity is positioned between the one-way portion and the main valve core, the first damping hole is arranged close to the one-way portion relative to the second damping hole and communicated with the first cavity, the main valve core can block the first cavity, and the aperture of the first damping hole is smaller than that of the second damping hole so as to form the second blocking portion.

So set up, the speed of the fluid that gets into the second damping hole is greater than the speed of flowing out first damping hole for the pressure that main valve core is close to one side of one-way portion is less than the pressure of keeping away from one side of one-way portion, thereby promotes main valve core motion in order to shutoff first chamber, thereby cuts off the hydraulic fluid port of second group and first group hydraulic fluid port.

In one embodiment, the valve element assembly further comprises a static iron core and a movable iron core, the movable iron core is located between the static iron core and the main valve core and connected to the main valve core, and the static iron core can attract the movable iron core to drive the main valve core to move.

In one embodiment, the valve core assembly further includes a second elastic member and a third elastic member, one end of the second elastic member abuts against the main valve core, the other end of the second elastic member abuts against the movable iron core, one end of the third elastic member abuts against the movable iron core, and the other end of the third elastic member abuts against the stationary iron core.

So set up, make things convenient for main valve core and moving the reseing of iron core.

In one embodiment, a second step and a first step are provided in the valve body assembly, the first cavity is located between the first step and the second step, the main spool can abut against the second step, and the check portion can abut against the first step.

So set up, thereby can carry out spacing first chamber of shutoff to main valve core and one-way portion.

In one embodiment, the valve body assembly includes a valve housing, the one-way portion includes a one-way valve element and a first elastic member, the one-way valve element is disposed in the valve housing and spaced from the valve element assembly, a spring seat is disposed in the valve housing, one end of the first elastic member abuts against the one-way valve element, and the other end of the first elastic member abuts against the spring seat.

So set up, make things convenient for the reseing of one-way valve core.

In one embodiment, a control port communicated with the first group of oil ports is formed in the check valve core, the check valve core comprises a blocking section, a first step is arranged on the inner wall of the valve sleeve, the control port is arranged far away from the first step relative to the blocking section, a first cavity is formed in the valve sleeve and located between the check valve core and the valve core assembly, and the blocking section can abut against the first step to separate the control port from the first cavity.

So set up to carry on spacingly to one-way valve core, with the first chamber of shutoff.

In one embodiment, the side wall of the resisting section is a conical surface, and the control ports are uniformly distributed along the circumferential direction of the one-way valve core.

So set up to make and form the conical surface between keeping out section and the first step sealed, strengthen sealed effect, and a plurality of control openings can increase oil output.

In one embodiment, there is one oil port in the first set of oil ports, there is one oil port in the second set of oil ports, the valve body assembly includes a valve housing, the first set of oil ports is opened at one end of the valve housing, extends into the valve housing, and penetrates through a sidewall of the valve housing, and the second set of oil ports is opened at a sidewall of the valve housing.

With such an arrangement, the flow rate can be increased.

In one embodiment, the valve body assembly comprises a valve sleeve and a valve seat, and one end of the valve sleeve is arranged in the valve seat in a penetrating mode and is in threaded connection with the valve seat.

Compared with the prior art, the plug-in mounting electromagnetic valve provided by the application can realize bidirectional cut-off when the plug-in mounting electromagnetic valve is powered off by arranging the blocking component; the blocking assembly comprises a one-way portion and a second blocking portion, the one-way portion is arranged in the valve body assembly, the second blocking portion is arranged on the valve core assembly, when the plug-in electromagnetic valve is powered off, the one-way portion blocks oil in the first set of oil ports to flow to the second set of oil ports, and the second blocking portion blocks oil in the second set of oil ports to flow to the first set of oil ports, so that two-way blocking is realized.

Drawings

FIG. 1 is a cross-sectional view of a cartridge solenoid valve provided in accordance with the present invention;

FIG. 2 is a functional diagram of an inserted solenoid valve.

In the figure, 100, a solenoid valve is inserted; 10. a valve body assembly; 11. a valve housing; 111. a second step; 112. a first step; 113. a spring seat; 114. a first chamber; 12. a valve seat; 13. an oil port; 131. a first set of oil ports; 1311. a first oil port; 132. a second set of oil ports; 1321. a second oil port; 14. a housing; 20. a valve core assembly; 21. a main valve element; 211. a first orifice; 212. a second orifice; 22. a pilot valve spool; 23. A stationary iron core; 24. a movable iron core; 25. a second elastic member; 26. a third elastic member; 30. a blocking component; 31. A unidirectional portion; 311. a one-way valve core; 3111. a resisting section; 312. a first elastic member; 313. a control port; 32. A second blocking portion.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

It will be understood that when an element is referred to as being "mounted on" another element, it can be directly mounted on the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. When an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1, the present invention provides a cartridge mounted solenoid valve 100 installed in a hydraulic system for controlling the flow of oil.

Specifically, the cartridge solenoid valve 100 includes a valve body assembly 10 and a valve core assembly 20, the valve core assembly 20 being disposed within the valve body assembly 10 and being movable within the valve body assembly 10.

The valve body assembly 10 includes a valve housing 11 and a valve seat 12, and one end of the valve housing 11 is disposed in the valve seat 12 and is threadedly coupled to the valve seat 12.

A plurality of oil ports 13 are formed in the valve housing 11, and the valve core assembly 20 can move in the valve housing 11 to communicate or block the oil ports 13.

The plurality of oil ports 13 includes a first group of oil ports 131 and a second group of oil ports 132.

Preferably, in this embodiment, the first set of oil ports 131 includes a first oil port 1311 and only one oil port 13, and the first oil port 1311 is opened at one end of the valve housing 11, extends into the valve housing 11, and penetrates through a sidewall of the valve housing 11 to increase the oil output. The second set of ports 132 includes a second port 1321, and only has one port 13, and the second port 1321 is opened in the side wall of the valve housing 11, that is, the cartridge solenoid valve 100 of the present embodiment is a two-way solenoid valve, of course. In other embodiments, the second set of ports 132 may also be two or more, and the first set of ports 131 may also be two or more, i.e., the cartridge solenoid valve 100 may also be a three-way, four-way, or five-way valve.

With continued reference to fig. 1, a second step 111 is disposed in the valve housing 11, and the valve core assembly 20 can abut against the second step 111 to limit the position of the valve core assembly 20.

The valve body assembly 10 further includes a housing 14, the housing 14 being connected to the valve seat 12, a portion of the core assembly 20 being disposed within the housing 14 and a portion extending outside of the housing 14. The housing 14 and the valve seat 12 may be connected by screwing or welding.

Further, the spool assembly 20 includes a main spool 21 and a pilot spool 22, the main spool 21 is disposed in the valve housing 11, the main spool 21 is provided with a first damping hole 211 and a second damping hole 212, the second damping hole 212 is communicated with the second group of oil ports 132, the valve housing 11 is provided with a first chamber 114 therein, the first chamber 114 is located at one side of the main spool 21, the first damping hole 211 is communicated with the first chamber 114, and the pilot spool 22 can move and block the first damping hole 211 or unblock, so that the second group of oil ports 132 are blocked or communicated with the first group of oil ports 131 through the second damping hole 212, the first damping hole 211 and the first chamber 114.

The main spool 21 can abut against the second step 111, thereby closing off the first chamber 114. The side surface of the main valve element 21 near one end of the second step 111 is a conical surface, and when the main valve element 21 abuts against the second step 111, the main valve element 21 and the second step 111 form a conical surface seal, so that the sealing performance is enhanced.

The valve core assembly 20 further includes a stationary core 23, a movable core 24 and a coil (not shown), the coil is located outside the stationary core 23, the movable core 24 is located between the stationary core 23 and the main valve core 21 and connected to the main valve core 21, when the coil is powered on, the stationary core 23 is controlled to attract the movable core 24 to drive the main valve core 21 to move, so as to remove the blockage of the first damping hole 211, and thus the second group of oil ports 132 is communicated with the first group of oil ports 131.

The valve core assembly 20 further includes a second elastic member 25 and a third elastic member, wherein one end of the second elastic member 25 abuts against the main valve core 21, the other end abuts against the movable iron core 24, one end of the third elastic member 26 abuts against the movable iron core 24, and the other end abuts against the static iron core 23. The third resilient member 26 is used to reset the plunger 24 when the coil is de-energized, and the second resilient member 25 is used to reset the main valve element 21 when the coil is energized.

The cartridge solenoid valve 100 further includes a blocking assembly 30, and the blocking assembly 30 is disposed in the valve housing 11 and is used for realizing the unidirectional communication between the second set of oil ports 132 and the first set of oil ports 131.

The blocking assembly 30 includes a one-way portion 31 and a second blocking portion 32, the one-way portion 31 is disposed in the valve housing 11, and the second blocking portion 32 is disposed on the valve core assembly 20. When the plug-in solenoid valve 100 is de-energized, the second blocking portion 32 blocks the oil from flowing from the first group of oil ports 131 to the second group of oil ports 132, and the check portion 31 blocks the oil from flowing from the second group of oil ports 132 to the first group of oil ports 131, so that the two-way cut-off is realized.

When the cartridge solenoid valve 100 is energized, the check portion 31 blocks the flow of the oil from the first group port 131 to the second group port 132, and therefore the second group port 132 can be always in one-way communication only with the first group port 131.

The check portion 31 includes a check valve core 311 and a first elastic member 312, the check valve core 311 is disposed in the valve housing 11, one end of the first elastic member 312 abuts against the check valve core 311, and the other end abuts against the inner wall of the valve housing 11. The first elastic member 312 is used for resetting of the check valve spool 311.

The check valve spool 311 is provided with a control port 313, and the control port 313 is communicated with the first oil port 1311. When the coil is energized, the second port 1321 communicates with the first port 1311 through the control port 313.

The control ports 313 are provided in plural numbers, and the plural control ports 313 are evenly distributed along the circumferential direction of the check valve body 311 to increase the flow rate.

The check valve spool 311 includes a stop section 3111, the inner wall of the valve housing 11 is provided with a first step 112, the first cavity 114 is located between the first step 112 and the second step 111, the stop section 3111 can be abutted against the first step 112, and the control port 313 is located between the stop section 3111 and the first oil port 1311. The oil in the first oil port 1311 pushes the check spool 311 to move in a direction close to the main spool 21 and abuts against the first land 112, thereby blocking the first chamber 114 from the control port 313, and thus preventing the oil in the first oil port 1311 from flowing to the second oil port 1321.

The second blocking portion 32 is formed by setting the aperture diameter of the first orifice 211 to be smaller than the aperture diameter of the second orifice 212. It will be appreciated that the oil from the second oil port 1321 enters the second orifice 212 and then enters the first chamber 114 from the first orifice 211, and the oil enters the main spool 21 faster than it exits from the first orifice 211, so that the pressure on the side of the main spool 21 remote from the check 31 is greater than the pressure on the side near the check 31. When the coil loses power, the pressure difference pushes the main valve element 21 to move towards the direction close to the one-way portion 31 to abut against the second step 111, and at this time, the pilot valve element 22 blocks the first damping hole 211, so that the second oil port 1321 and the first oil port 1311 are separated in the power loss state of the coil.

Referring to fig. 2, in the working process, when the coil is powered on, the static iron core 23 magnetically attracts the movable iron core 24, the movable iron core 24 drives the pilot valve core 22 to move in the direction away from the check portion 31, so as to unblock the first damping hole 211, the oil in the second group of oil ports 132 enters the main valve core 21 from the second damping hole 212 and flows out of the first damping hole 211 to the first cavity 114, the check valve core 311 is pushed to move, so that the blocking section 3111 is released from being abutted against the first step 112, and the oil enters the first group of oil ports 131 from the control port 313, so that the one-way conduction from the second group of oil ports 132 to the first group of oil ports 131 is realized; because the first orifice 211 is smaller than the second orifice 212, the pressure in the first chamber 114 is smaller than the pressure on the side of the main valve element 21 away from the first chamber 114, when the coil is powered off, the restoring forces of the second elastic element 25 and the third elastic element 26 are added, so that the main valve element 21 abuts against the second step 111, and the pilot valve element 22 blocks the first orifice 211, thereby blocking the oil in the second set of oil ports 132 from flowing to the first set of oil ports 131, meanwhile, the oil in the first set of oil ports 131 pushes the check valve element 311 to move, so that the check valve element 311 moves towards the direction close to the valve element assembly 20, and the blocking section 3111 abuts against the first step 112, thereby blocking the control port 313 from the first chamber 114, and blocking the oil in the first set of oil ports 131 from flowing to the second set of oil ports 132. Note that: (1) in fig. 2 denotes a first oil port 1311, and: (ii) denotes a second oil port 1321.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A plug-in mounting electromagnetic valve comprises a valve body assembly (10), a valve core assembly (20) and a blocking assembly (30), wherein the valve core assembly (20) is arranged in the valve body assembly (10), a plurality of oil ports (13) are formed in the valve body assembly (10), the valve core assembly (20) can move in the valve body assembly (10) to enable the oil ports (13) to be communicated or blocked, and the blocking assembly (30) is arranged in the valve body assembly (10) to enable the oil ports (13) to be communicated in a one-way mode;

the oil valve is characterized in that the oil ports (13) comprise a first group of oil ports (131) and a second group of oil ports (132), the blocking assembly (30) comprises a one-way part (31) and a second blocking part (32), the one-way part (31) is arranged between the first group of oil ports (131) and the second group of oil ports (132), and the second blocking part (32) is arranged on the valve core assembly (20); when the plug-in electromagnetic valve is powered off, the second blocking part (32) can block the oil from flowing from the second group of oil ports (132) to the first group of oil ports (131), and the one-way part (31) can block the oil from flowing from the first group of oil ports (131) to the second group of oil ports (132).

2. The cartridge solenoid valve according to claim 1, wherein the spool assembly (20) comprises a main spool (21) and a pilot spool (22), the main spool (21) is disposed in the valve body assembly (10), the main spool (21) is provided with a first damping hole (211) and a second damping hole (212), the second damping hole (212) is communicated with the second set of oil ports (132), and the pilot spool (22) can move relative to the main spool (21) to block the first damping hole (211); the valve core assembly (20) is internally provided with a first cavity (114), the first cavity (114) is located between the one-way portion (31) and the main valve core (21), the first damping hole (211) is arranged close to the one-way portion (31) relative to the second damping hole (212) and communicated with the first cavity (114), the main valve core (21) can block the first cavity (114), and the diameter of the first damping hole (211) is smaller than that of the second damping hole (212) to form the second blocking portion (32).

3. The cartridge solenoid valve according to claim 2, wherein the spool assembly (20) further comprises a static core (23) and a movable core (24), the movable core (24) is located between the static core (23) and the main spool (21) and connected to the main spool (21), and the static core (23) can attract the movable core (24) to drive the main spool (21) to move.

4. A cartridge solenoid valve according to claim 3, wherein the valve core assembly (20) further comprises a second elastic member (25) and a third elastic member (26), one end of the second elastic member (25) abuts against the main valve core (21) and the other end abuts against the movable iron core (24), one end of the third elastic member (26) abuts against the movable iron core (24) and the other end abuts against the static iron core (23).

5. A cartridge solenoid valve according to claim 2, wherein a second step (111) and a first step (112) are provided in the valve body assembly (10), the first chamber (114) is located between the first step (112) and the second step (111), the main spool (21) is capable of abutting against the second step (111), and the check portion (31) is capable of abutting against the first step (112).

6. A cartridge electromagnetic valve according to claim 1, wherein the valve body assembly (10) comprises a valve housing (11), the check portion (31) comprises a check valve core (311) and a first elastic member (312), the check valve core (311) is disposed in the valve housing (11) and spaced apart from the valve core assembly (20), a spring seat (113) is disposed in the valve housing (11), and one end of the first elastic member (312) abuts against the check valve core (311) and the other end abuts against the spring seat (113).

7. The cartridge electromagnetic valve according to claim 6, wherein a control port (313) communicated with the first set of oil ports (131) is formed in the check valve core (311), the check valve core (311) includes a resisting section (3111), a first step (112) is formed in an inner wall of the valve housing (11), the control port (313) is arranged away from the first step (112) relative to the resisting section (3111), a first cavity (114) is formed in the valve housing (11), the first cavity (114) is located between the check valve core (311) and the valve core assembly (20), and the resisting section (3111) can abut against the first step (112) to isolate the control port (313) from the first cavity (114).

8. The cartridge solenoid valve according to claim 7, characterized in that the side wall of the stop section (3111) is a conical surface and the control ports (313) are evenly distributed along the circumference of the check valve spool (311).

9. The cartridge solenoid valve according to claim 1, wherein one oil port (13) is provided in the first set of oil ports (131), one oil port (13) is provided in the second set of oil ports (132), the valve body assembly (10) comprises a valve housing (11), the first set of oil ports (131) is opened at one end of the valve housing (11) and extends into the valve housing (11) and penetrates through a side wall of the valve housing (11), and the second set of oil ports (132) is opened at a side wall of the valve housing (11).

10. The cartridge solenoid valve according to claim 1, characterized in that the valve body assembly (10) comprises a valve sleeve (11) and a valve seat (12), one end of the valve sleeve (11) is arranged in the valve seat (12) in a penetrating way and is in threaded connection with the valve seat (12).