CN213332530U

CN213332530U - Explosion-proof electro-hydraulic reversing valve

Info

Publication number: CN213332530U
Application number: CN202022327462.8U
Authority: CN
Inventors: 吴传锦
Original assignee: Changzhou Fengdun Hydraulic Machinery Equipment Co ltd
Current assignee: Changzhou Fengdun Hydraulic Machinery Equipment Co ltd
Priority date: 2020-10-19
Filing date: 2020-10-19
Publication date: 2021-06-01
Anticipated expiration: 2030-10-19

Abstract

The utility model discloses a flame proof electricity liquid switching-over valve, including the main valve body, the internal sliding connection of main valve has the main valve core, the main valve core both sides all are equipped with reset spring, main valve body both sides wall all is equipped with adjustment mechanism, main valve body upper end is through control pipeline fixedly connected with pilot solenoid valve, the equal sliding connection in pilot solenoid valve both ends has magnetic slider, two through solenoid valve core fixed connection between the magnetic slider. The utility model discloses a set up shank of bolt, rectangle threaded sleeve, rectangle sliding sleeve and cylinder groove, but the mobile range about adjustable main valve core makes main valve core can the flow control size, avoids the switching-over in-process fluid to cause great impact wear to device inside, improves the practicality of device, simultaneously through setting up the rectangle slide bar, slide mouth and stop gear, conveniently carries out the switching-over operation of device under the emergent condition that the circuit can't use, improves the convenience of device.

Description

Explosion-proof electro-hydraulic reversing valve

Technical Field

The utility model relates to an electricity liquid switching-over valve technical field specifically is a flame proof electricity liquid switching-over valve.

Background

The electro-hydraulic directional valve is a hydraulic directional valve which is combined with an electromagnetic pilot valve into a whole, is mainly used in a hydraulic system with the flow rate exceeding the normal working allowable range of the electromagnetic directional valve, controls the action of an executing element or controls the flowing direction of oil, and the existing electro-hydraulic directional valve can basically meet daily use requirements, but has some defects and needs to be improved.

In the control switching-over process of the electro-hydraulic directional valve, the fluid flow direction switching often causes impact wear to the valve body internal parts, thereby reducing the service life of the electro-hydraulic directional valve, on the occasions with low requirements on reversing speed, the impact wear of the type can be reduced through flow control, and a part of the electro-hydraulic directional valve does not have a flow control structure, and in addition, a part of the electro-hydraulic directional valve does not have an emergency reversing structure under the emergency condition that a circuit cannot be used, so that the explosion-proof electro-hydraulic directional valve is urgently needed to solve the problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a flame proof electricity liquid switching-over valve to solve the problem that some electricity liquid switching-over valves that provide do not have flow control's structure and do not have emergent switching-over structure among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a flame proof electricity liquid switching-over valve, includes the main valve body, the internal sliding connection of main valve has the main valve core, main valve core both sides all are equipped with reset spring, the reset spring both ends respectively with the main valve body, main valve core fixed connection, main valve body both sides wall all is equipped with the adjustment mechanism who is used for adjusting main valve core home range, main valve body upper end is through control pipeline fixedly connected with pilot solenoid valve, the equal sliding connection in pilot solenoid valve both ends has magnetic slider, two pass through solenoid valve core fixed connection between the magnetic slider, the equal sliding connection of pilot solenoid valve both sides wall has the rectangle slide bar that the level set up, be equipped with stop gear on the rectangle slide bar, the flame proof valve that two symmetries of pilot solenoid valve upper end fixedly.

Preferably, the adjusting mechanism comprises a bolt rod which is arranged on the side wall of the main valve body in a rotating mode and connected with the main valve body in a horizontal mode, one end of the bolt rod is inserted into the main valve body and is in threaded connection with a rectangular threaded sleeve, a rectangular sliding sleeve is sleeved on the outer side of the rectangular threaded sleeve in a sliding mode, and one end, far away from the main valve core, of the rectangular sliding sleeve is fixedly connected with the inner side wall of the main.

Preferably, the side wall of the main valve body is provided with a cylindrical groove matched with the bolt rod, and the bolt rod is rotatably connected with the cylindrical groove.

Preferably, a sealing ring is arranged on the inner side, close to one end of the main valve core, of the rectangular sliding sleeve, and attached to the rectangular threaded sleeve.

Preferably, a sliding groove matched with the magnetic slider is arranged in the pilot electromagnetic valve, and the magnetic slider is connected with the sliding groove in a sliding manner.

Preferably, the side wall of the pilot electromagnetic valve is provided with a sliding opening matched with the rectangular sliding rod, and the rectangular sliding rod is connected with the sliding opening in a sliding manner.

Preferably, stop gear includes the spring groove that is equipped with in the rectangle slide bar, spring inslot bottom fixedly connected with thrust spring, thrust spring upper end fixedly connected with button, the vertical slip in button upper end runs through the rectangle slide bar setting, the mouth upper end that slides is equipped with the spacing hole of button assorted.

Compared with the prior art, the beneficial effects of the utility model are that:

1. this flame proof electricity liquid switching-over valve is provided with shank of bolt, rectangle screw sleeve, rectangle sliding sleeve and cylinder groove, and through rotatory shank of bolt, the shank of bolt is at cylinder inslot rotation and through the screw thread feeding effect drive rectangle screw sleeve and remove in the rectangle sliding sleeve, has adjusted main valve core's but movable range about, makes main valve core can the flow control size, avoids the switching-over in-process fluid to cause great impact wear to the device is inside, improves the practicality of device.

2. The explosion-proof electro-hydraulic reversing valve is provided with a rectangular sliding rod, a sliding opening and a limiting mechanism, the spring groove is withdrawn by pressing a button, then the rectangular sliding rod is pushed, the rectangular sliding rod moves in the sliding opening and pushes a magnetic slider to complete reversing control, then the limiting mechanism fixes the rectangular sliding rod, reversing operation of the device is conveniently carried out under the emergency condition that a circuit cannot be used, and convenience of the device is improved.

Drawings

Fig. 1 is a schematic front view of a cross-sectional structure of the present invention;

FIG. 2 is a schematic side view of the present invention;

fig. 3 is an enlarged schematic structural view of a portion a in fig. 1 according to the present invention;

fig. 4 is an enlarged schematic structural diagram of the present invention at B in fig. 1.

In the figure: 1. a main valve body; 2. a main valve element; 3. a return spring; 4. a control conduit; 5. a pilot solenoid valve; 6. a magnetic slider; 7. an electromagnetic spool; 8. a rectangular slide bar; 9. an explosion-proof valve; 10. a bolt shank; 11. a rectangular threaded sleeve; 12. a rectangular sliding sleeve; 13. a cylindrical groove; 14. a seal ring; 15. a chute; 16. a sliding port; 17. a spring slot; 18. a thrust spring; 19. a button; 20. and a limiting hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides an embodiment:

a flame-proof electro-hydraulic reversing valve comprises a main valve body 1, a main valve core 2 is connected in the main valve body 1 in a sliding mode, reset springs 3 are arranged on two sides of the main valve core 2, two ends of each reset spring 3 are fixedly connected with the main valve body 1 and the main valve core 2 respectively, adjusting mechanisms for adjusting the movable range of the main valve core 2 are arranged on two side walls of the main valve body 1 respectively, each adjusting mechanism comprises a horizontally arranged bolt rod 10 connected with the side wall of the main valve body 1 in a rotating mode, a cylindrical groove 13 matched with the bolt rod 10 is arranged on the side wall of the main valve body 1, the bolt rod 10 is connected with the cylindrical groove 13 in a rotating mode, the outer diameter of the bolt rod 10 is equal to the inner diameter of the cylindrical groove 13, the bolt rod 10 can rotate in the cylindrical groove 13 through the outer diameter of the bolt rod 10 being equal to the inner diameter of the cylindrical groove 13, one end of the bolt rod 10 is inserted into the main, the outer surface width of rectangle threaded sleeve 11 equals with the inner wall width of rectangle sliding sleeve 12, the outer surface width through rectangle threaded sleeve 11 equals with the inner wall width of rectangle sliding sleeve 12, make rectangle threaded sleeve 11 can remove in rectangle sliding sleeve 12, rectangle sliding sleeve 12 is close to 2 one end of main valve core and is provided with sealing washer 14 with the inboard of rectangle threaded sleeve 11 laminating, through setting up sealing washer 14, fluid in the prevention device leaks outside from rectangle sliding sleeve 12 is inside, 2 one end of main valve core and 1 inside wall fixed connection of main valve body are kept away from to rectangle sliding sleeve 12.

The upper end of the main valve body 1 is fixedly connected with a pilot electromagnetic valve 5 through a control pipeline 4, two ends of the pilot electromagnetic valve 5 are all connected with magnetic sliders 6 in a sliding mode, a sliding groove 15 matched with the magnetic sliders 6 is formed in the pilot electromagnetic valve 5, the magnetic sliders 6 are connected with the sliding groove 15 in a sliding mode, the magnetic sliders 6 and the sliding groove 15 are all arranged in a cylindrical mode, the outer diameter of the magnetic sliders 6 is equal to the inner diameter of the sliding groove 15, the magnetic sliders 6 can move in the sliding groove 15, and the two magnetic sliders 6 are fixedly connected through an electromagnetic valve core 7.

The two side walls of the pilot electromagnetic valve 5 are both connected with a horizontally arranged rectangular sliding rod 8 in a sliding manner, the side wall of the pilot electromagnetic valve 5 is provided with a sliding opening 16 matched with the rectangular sliding rod 8, the rectangular sliding rod 8 is connected with the sliding opening 16 in a sliding manner, the surface width of the rectangular sliding rod 8 is equal to the inner wall width of the sliding opening 16, the rectangular sliding rod 8 can move in the sliding opening 16 through the surface width of the rectangular sliding rod 8 is equal to the inner wall width of the sliding opening 16, the rectangular sliding rod 8 is provided with a limiting mechanism, the limiting mechanism comprises a spring groove 17 arranged in the rectangular sliding rod 8, the inner bottom surface of the spring groove 17 is fixedly connected with a thrust spring 18, the upper end of the thrust spring 18 is fixedly connected with a button 19, the upper end of the button 19 vertically penetrates through the rectangular sliding rod 8 in a sliding manner, the upper end of the sliding, the outer diameter of the button 19 is equal to the inner diameter of the limiting hole 20, so that the button 19 can be slidably inserted into the limiting hole 20, and the two symmetrically-arranged explosion-proof valves 9 are fixedly connected to the upper end of the pilot electromagnetic valve 5.

The working principle is as follows: when flow control is required to be performed through the main valve element 2, the bolt rod 10 is rotated firstly, the bolt rod 10 rotates in the cylindrical groove 13, the bolt rod 10 drives the rectangular threaded sleeve 11 to move in the rectangular sliding sleeve 12 through the thread feeding effect with the rectangular threaded sleeve 11, the extending length of the rectangular threaded sleeve 11 in the main valve element 1 can limit the moving range of the main valve element 2, the opening size of the valve port P, T, A, B can be influenced by the position of the main valve element 2 in the main valve element 1, and therefore flow control is performed, and flow control is facilitated through the main valve element 2.

When the device needs to be subjected to emergency reversing control, the button 19 is pressed firstly, the button 19 moves towards the spring groove 17 and extrudes the thrust spring 18, the thrust spring 18 is elastically deformed and compressed under the action of force, after the button 19 moves and is accommodated in the spring groove 17, the rectangular slide rod 8 is pushed, the rectangular slide rod 8 moves in the sliding opening 16 and pushes the magnetic slide block 6, the magnetic slide block 6 moves in the sliding groove 15 and drives the electromagnetic valve core 7 to move to complete reversing control, meanwhile, the button 19 corresponds to the position of the limiting hole 20, the elastic potential energy of the thrust spring 18 is released to push the button 19 to pop out of the spring groove 17 and insert into the limiting hole 20, the rectangular slide rod 8 is fixed, and the device is convenient to be subjected to emergency reversing control.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a flame proof electricity liquid switching-over valve, includes main valve body (1), its characterized in that: the main valve body (1) is connected with a main valve core (2) in a sliding way, two sides of the main valve core (2) are both provided with a return spring (3), two ends of the reset spring (3) are respectively fixedly connected with the main valve body (1) and the main valve core (2), two side walls of the main valve body (1) are provided with adjusting mechanisms for adjusting the movable range of the main valve core (2), the upper end of the main valve body (1) is fixedly connected with a pilot electromagnetic valve (5) through a control pipeline (4), both ends of the pilot electromagnetic valve (5) are connected with magnetic sliders (6) in a sliding manner, the two magnetic sliders (6) are fixedly connected through an electromagnetic valve core (7), two side walls of the pilot electromagnetic valve (5) are connected with a horizontally arranged rectangular slide bar (8) in a sliding way, the rectangular sliding rod (8) is provided with a limiting mechanism, and the upper end of the pilot electromagnetic valve (5) is fixedly connected with two explosion-proof valves (9) which are symmetrically arranged.

2. The flameproof electro-hydraulic reversing valve according to claim 1, characterized in that: the adjusting mechanism comprises a bolt rod (10) which is arranged on the side wall of the main valve body (1) in a rotating mode and connected with the main valve body (1) in a horizontal mode, one end of the bolt rod (10) is inserted into the main valve body (1) and is connected with a rectangular threaded sleeve (11) in a threaded mode, a rectangular sliding sleeve (12) is sleeved on the outer side of the rectangular threaded sleeve (11) in a sliding mode, and one end of the main valve core (2) and the inner side wall of the main valve body (1) are fixedly connected through the.

3. The flameproof electro-hydraulic reversing valve according to claim 2, characterized in that: the side wall of the main valve body (1) is provided with a cylindrical groove (13) matched with the bolt rod (10), and the bolt rod (10) is rotatably connected with the cylindrical groove (13).

4. The flameproof electro-hydraulic reversing valve according to claim 2, characterized in that: and a sealing ring (14) is arranged on the inner side of the rectangular sliding sleeve (12) close to one end of the main valve core (2) and attached to the rectangular threaded sleeve (11).

5. The flameproof electro-hydraulic reversing valve according to claim 1, characterized in that: a sliding groove (15) matched with the magnetic slider (6) is formed in the pilot electromagnetic valve (5), and the magnetic slider (6) is in sliding connection with the sliding groove (15).

6. The flameproof electro-hydraulic reversing valve according to claim 1, characterized in that: the side wall of the pilot electromagnetic valve (5) is provided with a sliding opening (16) matched with the rectangular sliding rod (8), and the rectangular sliding rod (8) is connected with the sliding opening (16) in a sliding mode.

7. The flameproof electro-hydraulic reversing valve according to claim 6, characterized in that: stop gear includes spring groove (17) that is equipped with in rectangle slide bar (8), bottom fixedly connected with thrust spring (18) in spring groove (17), thrust spring (18) upper end fixedly connected with button (19), button (19) upper end vertical slip runs through rectangle slide bar (8) setting, slide mouthful (16) upper end be equipped with button (19) assorted spacing hole (20).