CN220248514U - Hydraulic reversing valve - Google Patents

Abstract

The utility model discloses a hydraulic reversing valve, which belongs to the technical field of reversing valves and comprises a valve body, wherein end covers are arranged on two sides of the valve body, an oil cavity is arranged in the valve body, a valve core is arranged in the oil cavity, one end of the valve core is provided with a sealing block, one end of the end cover is internally provided with a first reset spring, and the other end of the first reset spring is sleeved with one end of the valve core. According to the utility model, the mounting mechanism is arranged, the handle in the mounting mechanism drives the fixed rod to move, meanwhile, the second reset spring is extruded through the supporting block outside the fixed rod, the connecting blocks on the opposite sides of the two end covers are inserted into the grooves, the handle is loosened, the fixed rod is inserted into the mounting holes of the connecting blocks through the elastic acting force of the second reset spring, and the end covers are mounted and dismounted.

Description

Hydraulic reversing valve

Technical Field

The utility model relates to the technical field of reversing valves, in particular to a hydraulic reversing valve.

Background

The hydraulic reversing valve in the hydraulic control valve is a hydraulic element with special purpose in the directional valve, is also a common directional control valve, and is used in different occasions due to hydraulic control, and is mainly applied to a hydraulic system of hydraulic equipment of a mine hoist.

The Chinese patent discloses a hydraulic reversing valve (publication No. CN 208518990U), this technical scheme includes the valve body, case and end cover, and the case sets up in the valve body, and the valve body both sides are provided with the end cover, are provided with L type through-hole on the end cover, and one side that L type through-hole is connected with the valve body sets up the piston, and the case both ends are connected with the piston respectively, and one side that the piston was kept away from the case just is located and is provided with the spring holder on the end cover inner wall, is provided with the spring on the spring holder, and the spring is connected with the piston, and the junction of end cover and valve body is provided with the sealing plug, is provided with 4 hydraulic fluid ports on the valve body. Through setting up L type through-hole to the end cover, make the change valve accessible pressure oil control the removal of case, and then control actuating element's opening and closure, convenient operation uses in a flexible way, and when not working, the change valve keeps the intermediate position under the effect of both ends spring force, and actuating element is in resting state, and is sealed good, safe and reliable has both improved production efficiency, has reduced maintenance cost again.

But this technical scheme discovers that the device is fixed end cover and valve body through the bolt in the in-service use, is inconvenient for the later stage to the maintenance of device, influences the availability factor of steering valve.

Disclosure of Invention

The utility model aims to provide a hydraulic reversing valve, which aims to solve the problems that the end cover and the valve body are fixed through bolts in the device provided in the background art, so that the device is inconvenient to maintain or replace in the later period and the service efficiency of the reversing valve is affected.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the utility model provides a hydraulic reversing valve, includes the valve body, the both sides of valve body all are provided with the end cover, the inside of valve body is provided with the oil pocket, the inside of oil pocket is provided with the case, the one end of case is provided with the sealing block, one of them the inside of end cover is provided with first reset spring, the other end of first reset spring cup joints with the one end of case mutually, both sides wall four corners department of valve body all is provided with installation mechanism, installation mechanism includes the cavity, the inside sliding connection of cavity has the dead lever, the one end outer wall cover of dead lever is equipped with second reset spring, two the equal fixedly connected with connecting block in opposite one side four corners department of end cover, a plurality of the mounting hole with dead lever looks adaptation has all been seted up to the outer wall of connecting block, and a plurality of the dead lever all runs through the connecting block through the mounting hole, and the dead lever can realize the fixing to the end cover through the connecting block.

As still further aspects of the utility model: wherein, a plurality of the one end of dead lever all is provided with the handle, and handle and dead lever fixed connection, the handle sets up in the inside of cavity, and the handle is convenient for the removal of dead lever.

As still further aspects of the utility model: wherein, a plurality of the one end of cavity all is provided with the protective cover, and a plurality of the protective cover all with cavity threaded connection, the protective cover can prevent dust and debris entering cavity.

As still further aspects of the utility model: the two side walls of the valve body are provided with grooves at four corners, the grooves are matched with the connecting blocks, and the grooves are convenient for the connection of the connecting blocks.

As still further aspects of the utility model: the lower surface wall of the oil cavity is fixedly communicated with a first oil inlet pipe, a first oil return pipe, a first oil inlet and a second oil return port, the first oil inlet pipe and the first oil return pipe are communicated with an external hydraulic cylinder, the first oil inlet and the second oil return port are connected with a gear pump, and an overflow valve is fixedly communicated with the outside of the first oil inlet.

As still further aspects of the utility model: the outer wall of the other end of the valve core is fixedly connected with a limiting lug, the limiting lug corresponds to the first reset spring in position, and the limiting lug can limit the first reset spring.

As still further aspects of the utility model: one of them the inside fixed connection stopper of end cover, the stopper cup joints mutually with first reset spring's one end, and the stopper can realize first reset spring's spacing.

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

1. the reversing valve in this embodiment drives the dead lever through setting up installation mechanism, and the handle in the installation mechanism removes, extrudees second reset spring through the outside supporting shoe of dead lever simultaneously to in inserting the recess with the connecting block of two relative one sides of end cover, loosen the handle, in the elastic force through second reset spring makes the dead lever insert the mounting hole of connecting block, realizes the installation and the dismantlement to the end cover, compares in traditional bolt installation, has promoted the efficiency of installation and dismantlement, the maintenance of the device of being convenient for.

2. The switching-over valve in this embodiment through set up the protective cover on the valve body, and the protective cover can effectually protect installation mechanism, avoids the dust to get into inside the cavity, through setting the top of dead lever to the arc to be convenient for the dead lever more insert the mounting hole fast, hoisting device's installation and the efficiency of dismantling.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a cross-sectional view of the overall structure of the present utility model;

FIG. 3 is an enlarged view of portion A of FIG. 2 in accordance with the present utility model;

FIG. 4 is a top view of the connecting block of the present utility model;

the correspondence between the reference numerals and the component names in the drawings is as follows:

1. a valve body; 2. an end cap; 3. a valve core; 4. an oil chamber; 5. a sealing block; 6. a limiting block; 7. a first return spring; 8. a mounting mechanism; 81. a cavity; 82. a fixed rod; 83. a second return spring; 84. a connecting block; 85. a handle; 86. a groove; 87. a mounting hole; 88. a protective cover; 9. a limit bump; 10. a first oil inlet pipe; 11. a first oil return pipe; 12. a first oil inlet; 13. and the second oil return port.

Detailed Description

Please refer to fig. 1-4: the utility model provides a hydraulic reversing valve, including valve body 1, the both sides of valve body 1 all are provided with end cover 2, the inside of valve body 1 is provided with oil pocket 4, the inside of oil pocket 4 is provided with case 3, the one end of case 3 is provided with sealing block 5, the inside of one of them end cover 2 is provided with first reset spring 7, the other end of first reset spring 7 cup joints with the one end of case 3 mutually, both sides wall four corners department of valve body 1 all is provided with installation mechanism 8, installation mechanism 8 includes cavity 81, the inside sliding connection of cavity 81 has dead lever 82, the one end outer wall cover of dead lever 82 is equipped with second reset spring 83, the equal fixedly connected with connecting block 84 in the relative one side four corners department of two end covers 2, the mounting hole 87 with dead lever 82 looks adaptation has all been seted up to the outer wall of a plurality of connecting blocks 84, and a plurality of dead levers 82 all run through connecting block 84 through mounting hole 87, dead lever 82 can realize the fixing to end cover 2 through connecting block 84.

The one end of a plurality of dead levers 82 all is provided with handle 85, and handle 85 and dead lever 82 fixed connection, handle 85 sets up in the inside of cavity 81, handle 85 is convenient for the removal of dead lever 82, the one end of a plurality of cavities 81 all is provided with protective cover 88, and a plurality of protective covers 88 all with cavity 81 threaded connection, protective cover 88 can prevent dust and debris entering cavity 81, the both sides wall four corners department of valve body 1 has all seted up flutedly 86, and a plurality of fluting 86 all with connecting block 84 assorted, the connection of connecting block 84 is convenient for to fluting 86, the lower table wall of oil pocket 4 all fixed intercommunication has first oil pipe 10, first oil return pipe 11, first oil inlet 12 and second oil return 13, first oil inlet pipe 10 and first oil return pipe 11 are linked together with outside pneumatic cylinder, first oil inlet 12 and second oil return 13 are connected with the gear pump, and the outside fixed intercommunication of first oil inlet 12 has the overflow valve, the other end outer wall of case 3 all fixedly connected with spacing lug 9, spacing lug 9 corresponds with the position of first reset spring 7, spacing lug 9 can realize spacing end cap 6 to the inside of first reset spring 7, the inside of reset spring 7 can realize spacing end cap 6, one of the reset spring 7 is connected with one of the end cap 6.

Working principle: when the hydraulic steering valve is used, the first oil inlet pipe 10 and the first oil return pipe 11 are communicated with an external hydraulic cylinder, the first oil inlet 12 and the second oil return port 13 are connected with a gear pump, the overflow valve is fixedly communicated with the outside of the first oil inlet 12, the hydraulic steering valve is normally used, when the valve body 1 needs to be maintained, the protection cover 88 is rotated to be opened, the handle 85 is pulled, the handle 85 drives the fixing rod 82 to move, meanwhile, the second return spring 83 is extruded through the supporting block outside the fixing rod 82, at the moment, the end cover 2 can be taken down for maintenance, when the end cover 2 needs to be installed after maintenance, the handle 85 is driven to move, meanwhile, the second return spring 83 is extruded through the supporting block outside the fixing rod 82, the connecting blocks 84 on the opposite sides of the two end covers 2 are inserted into the grooves 86, the handle 85 is loosened, the fixing rod 82 is inserted into the mounting holes 87 of the connecting blocks 84 through elastic acting force of the second return spring 83, and the installation of the end cover 2 are realized, compared with the traditional bolt installation, the installation and the detachment of the hydraulic steering valve are improved, and the maintenance of the hydraulic steering valve is convenient.

The foregoing description is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical solution of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims (7)

1. The utility model provides a hydraulic reversing valve, includes valve body (1), its characterized in that, both sides of valve body (1) all are provided with end cover (2), the inside of valve body (1) is provided with oil pocket (4), the inside of oil pocket (4) is provided with case (3), the one end of case (3) is provided with sealing block (5), and one of them the inside of end cover (2) is provided with first reset spring (7), the other end of first reset spring (7) cup joints with the one end of case (3), both sides wall four corners department of valve body (1) all is provided with installation mechanism (8);

the mounting mechanism (8) comprises a cavity (81), a fixing rod (82) is connected to the inside of the cavity (81) in a sliding mode, a second reset spring (83) is sleeved on the outer wall of one end of the fixing rod (82), two connecting blocks (84) are fixedly connected to four corners of the opposite side of the end cover (2), mounting holes (87) matched with the fixing rod (82) are formed in the outer wall of each connecting block (84), and the fixing rods (82) penetrate through the connecting blocks (84) through the mounting holes (87).

2. A hydraulic reversing valve according to claim 1, characterized in that a plurality of said fixed rods (82) are provided with handles (85) at one end thereof, and that the handles (85) are fixedly connected to the fixed rods (82), said handles (85) being provided in the interior of the cavity (81).

3. A hydraulic reversing valve according to claim 1, characterized in that a plurality of said cavities (81) are each provided with a protective cap (88) at one end, and that a plurality of said protective caps (88) are each screwed with the cavities (81).

4. A hydraulic reversing valve according to claim 1, characterized in that grooves (86) are formed in four corners of two side walls of the valve body (1), and a plurality of grooves (86) are matched with the connecting blocks (84).

5. The hydraulic reversing valve according to claim 1, wherein the lower surface walls of the oil chamber (4) are fixedly communicated with a first oil inlet pipe (10), a first oil return pipe (11), a first oil inlet (12) and a second oil return port (13).

6. The hydraulic reversing valve according to claim 1, wherein the outer walls of the other ends of the valve cores (3) are fixedly connected with limiting lugs (9), and the limiting lugs (9) correspond to the first return springs (7).

7. A hydraulic reversing valve according to claim 1, characterized in that a limiting block (6) is fixedly connected to the inside of one of the end caps (2), and the limiting block (6) is sleeved with one end of a first return spring (7).