CN217784307U - Pressure maintaining valve with pressure maintaining function - Google Patents

Abstract

The utility model discloses a pressure retaining valve with pressure retaining function, which comprises a lower valve body and a steering top cover, wherein the outer part of the lower valve body is provided with an upper valve body, and the inner part of the steering top cover is provided with a pressure retaining mechanism; the pressurize mechanism has been including seting up at the outside grooving of turning to the top cap, the rotation groove has been seted up to the outside of turning to the top cap, the internally mounted of turning to the top cap has reset spring, reset spring keeps away from the one end that turns to the top cap and installs the driving block, the externally mounted of driving block has the fixture block, the stay cord is installed to the inside symmetry of grooving, movable groove has been seted up to the inside of going up the valve body, the inside sliding connection of movable groove has the closing plate that is connected with the stay cord, install the elasticity rope jointly between closing plate and the movable groove. The utility model discloses make the reaction of valve more sensitive, the backward flow of the oil drain port that has significantly reduced for the normal operating of equipment is guaranteed to the stability more of the pressure of system, avoids taking place the incident, reduces economic loss, and more safe practicality.

Description

Pressure maintaining valve with pressure maintaining function

Technical Field

The utility model relates to an automobile valve technical field especially relates to a pressure retaining valve with pressurize function.

Background

The pressure retaining valve is mainly applied to a hydraulic system, in the working process, if pressure failure occurs, when oil supply is stopped, the pressure retaining valve can keep the pressure of the system unchanged, temporary retention of force or position can be realized through different actuators, the pressure retaining valve is used for application situations needing temporary force or position maintenance, and the pressure reduction in a driving device can be effectively prevented when the pressure failure occurs in the whole system.

The most adoption check valve of current pressure retaining valve realizes, nevertheless when breaking down, because the opening of case department is great, case department has a small amount of fluid backward flow, finally can make the fluid backward flow in the oil pipe, leads to the pressure reduction of system, influences the normal work of equipment, takes place the incident easily, and economic loss is great, consequently needs a pressure retaining valve with pressurize function.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the pressure reduction that exists among the prior art and cause the system easily, influencing the normal work of equipment, taking place the incident easily, the big shortcoming of economic loss, and the pressure retaining valve with pressurize function that provides.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a pressure retaining valve with a pressure retaining function comprises a lower valve body and a steering top cover, wherein an upper valve body is mounted outside the lower valve body, and a pressure retaining mechanism is arranged inside the steering top cover;

pressurize mechanism is including seting up at the outside grooving of turning to the top cap, the rotation groove has been seted up to the outside of turning to the top cap, the internally mounted who turns to the top cap has reset spring, reset spring keeps away from the one end that turns to the top cap and installs the drive block, the externally mounted of drive block has the fixture block, the stay cord is installed to the inside symmetry of grooving, go up the inside of valve body and seted up movable groove, the inside sliding connection in movable groove has the closing plate that is connected with the stay cord, install the elasticity rope jointly between closing plate and the movable groove, one side that reset spring was kept away from to the drive block is provided with drive assembly.

The above technical solution further comprises:

preferably, a plurality of oil inlets are formed in the outer portion of the lower valve body, a plurality of oil outlets are formed in the outer portion of the upper valve body, a combined gasket is installed at one end, far away from the lower valve body, of the upper valve body, and a sealing screw is connected to one end, far away from the lower valve body, of the upper valve body in a threaded mode, so that the situation of oil leakage of the valve body is avoided.

Preferably, the driving assembly comprises a main spring installed on one side, far away from the reset spring, of the driving block, a valve core is installed at one end, far away from the driving block, of the main spring, and an oil through cavity is formed in one side, close to the valve core, of the upper valve body, so that one-way entering of oil can be achieved.

Preferably, a plug is installed inside the lower valve body, the size of the top of the plug is smaller than that of the oil through cavity, and the top of the plug is in contact with the valve core, so that the damage degree of the valve core in the case of failure can be reduced.

Preferably, the last valve body is close to one side of turning to the top cap and is installed the steering column, turn to the outside of top cap and offer the groove with steering column looks adaptation, the activity groove is hollow cylinder, the activity groove is run through to the top by the below of oil drain port.

Preferably, the sealing plate is larger than the oil drain port, and the elastic rope is arranged on one side, away from the pull rope, of the sealing plate.

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

the utility model discloses in use through the cooperation between steering top cap, grooving, reset spring, drive block, fixture block, rotation groove, stay cord, closing plate and the elasticity rope for response sensitivity more of valve has significantly reduced the backward flow of oil drain port, makes the pressure stability more of system, guarantees the normal operating of equipment, avoids taking place the incident, reduces economic loss, and more safe is practical.

Drawings

Fig. 1 is a schematic perspective view of a pressure maintaining valve with a pressure maintaining function according to the present invention;

fig. 2 is a schematic cross-sectional structure view of a pressure maintaining valve with a pressure maintaining function according to the present invention;

FIG. 3 is a schematic structural view of the steering top cover of the present invention;

FIG. 4 is an enlarged view of the structure at A in FIG. 2;

fig. 5 is an enlarged schematic view of the structure at B in fig. 2.

In the figure: 1. a lower valve body; 2. an upper valve body; 3. an oil inlet; 4. an oil discharge port; 5. a combination washer; 6. a seal screw; 7. a plug; 8. an oil cavity is communicated; 9. a valve core; 10. a main spring; 11. a drive block; 12. a steering column; 13. a steering header; 14. rope grooves; 15. a rotating groove; 16. a clamping block; 17. a return spring; 18. pulling a rope; 19. a movable groove; 20. a sealing plate; 21. an elastic cord.

Detailed Description

The technical solution of the present invention will be further explained with reference to the accompanying drawings and specific embodiments.

Example one

As shown in fig. 2-5, the pressure maintaining valve with pressure maintaining function provided by the present invention comprises a lower valve body 1 and a steering top cover 13, wherein an upper valve body 2 is installed outside the lower valve body 1, and a pressure maintaining mechanism is arranged inside the steering top cover 13;

the pressure maintaining mechanism comprises a rope groove 14 formed in the outer portion of the steering top cover 13, a rotating groove 15 is formed in the outer portion of the steering top cover 13, a return spring 17 is mounted in the steering top cover 13, a driving block 11 is mounted at one end, far away from the steering top cover 13, of the return spring 17, a clamping block 16 is mounted on the outer portion of the driving block 11, pull ropes 18 are symmetrically mounted in the rope groove 14, a movable groove 19 is formed in the upper valve body 2, a sealing plate 20 connected with the pull rope 18 is slidably connected in the movable groove 19, an elastic rope 21 is commonly mounted between the sealing plate 20 and the movable groove 19, a driving assembly is arranged on one side, far away from the return spring 17, of the driving block 11, the end portion of the pull rope 18 is fixedly connected in the rope groove 14, and the rest portions of the end portion are wound in the rope groove 14;

a plurality of oil inlets 3 have been seted up to the outside of lower valve body 1, a plurality of oil drain ports 4 have been seted up to the outside of going up valve body 2, go up valve body 2 and keep away from the one end of lower valve body 1 and install combination packing ring 5, the one end threaded connection who goes up valve body 2 and keep away from lower valve body 1 has sealing screw 6, go up valve body 2 and install steering column 12 near one side that turns to top cap 13, turn to top cap 13's outside and set up the groove with steering column 12 looks adaptation, movable groove 19 is hollow circular cylinder, movable groove 19 runs through to the top by the below of oil drain port 4, the size of closing plate 20 is greater than the size of oil drain port 4, elastic rope 21 is located one side that stay cord 18 was kept away from to closing plate 20.

The working principle of the pressure retaining valve with the pressure retaining function based on the first embodiment is that when the pressure retaining valve normally works, the valve core 9 moves upwards under the action of oil, because one end of the valve core 9, which is far away from the oil through cavity 8, is provided with the main spring 10 and the driving block 11, the outside of the driving block 11 is provided with the fixture block 16 matched with the rotating groove 15 arranged outside the steering top cover 13, at the moment, under the action of the fixture block 16, the valve core 9 moves upwards, the driving block 11 is driven to move upwards while the main spring 10 is compressed, and the steering top cover 13 is driven to rotate along the direction of the rotating groove 15;

because the outside of the steering top cover 13 is provided with the rope groove 14, one end of the pull rope 18 is arranged inside the rope groove 14, and the other end of the pull rope 18 is connected with the sealing plate 20, at this time, the steering top cover 13 can roll the pull rope 18 to drive the sealing plate 20 to move upwards in the movable groove 19, so that oil can be discharged through the oil outlet 4;

when breaking down, oil inlet 3 stops the fuel feeding, can drive case 9 to leading to oil chamber 8 one side motion under reset spring 17 and main spring 10's effect, drive driving block 11 downstream simultaneously, make fixture block 16 downstream in rotating groove 15, when moving to rotating groove 15 bottom, closing plate 20 can seal oil drain port 4 rapidly under the effect of elastic rope 21, drive through stay cord 18 and turn to top cap 13 and rotate to the initial position, accomplish the sealing of oil drain port 4, make the reaction of valve more sensitive, the backward flow of oil drain port 4 has significantly reduced, make the pressure of system more stable, guarantee the normal operating of equipment, avoid taking place the incident, reduce economic loss, more safe practical.

Example two

As shown in fig. 1-2, based on the first embodiment, the driving assembly includes a main spring 10 installed on one side of the driving block 11 away from the return spring 17, a valve core 9 is installed on one end of the main spring 10 away from the driving block 11, an oil through cavity 8 is opened on one side of the upper valve body 2 close to the valve core 9, a plug 7 is installed inside the lower valve body 1, the size of the top of the plug 7 is smaller than that of the oil through cavity 8, and the top of the plug 7 contacts with the valve core 9.

In this embodiment, oil inlet 3 is located and leads to between oil pocket 8 and the end cap 7, guarantees that fluid can discharge through leading to oil pocket 8, and when stopping the fuel feeding, end cap 7 can reduce case 9 and the impact that leads to 8 departments in oil pocket, and the damage degree to case 9 when reducing the trouble for valve work is more stable, has also prolonged the life of case 9 simultaneously.

The above, only be the embodiment of the preferred of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, which are designed to be replaced or changed equally, all should be covered within the protection scope of the present invention.

Claims (6)

1. The pressure retaining valve with the pressure retaining function comprises a lower valve body (1) and a steering top cover (13), and is characterized in that an upper valve body (2) is mounted outside the lower valve body (1), and a pressure retaining mechanism is arranged inside the steering top cover (13);

pressurize mechanism is including seting up at rope groove (14) that turn to top cap (13) outside, turn to the outside of top cap (13) and seted up rotation groove (15), the internally mounted that turns to top cap (13) has reset spring (17), reset spring (17) are kept away from the one end that turns to top cap (13) and are installed drive block (11), the externally mounted of drive block (11) has fixture block (16), stay cord (18) are installed to the internal symmetry of rope groove (14), movable groove (19) have been seted up to the inside of going up valve body (2), the inside sliding connection of movable groove (19) has closing plate (20) that are connected with stay cord (18), install elasticity rope (21) jointly between closing plate (20) and movable groove (19), one side that reset spring (17) were kept away from in drive block (11) is provided with drive assembly.

2. The pressure retaining valve with the pressure retaining function according to claim 1, wherein a plurality of oil inlets (3) are formed in the exterior of the lower valve body (1), a plurality of oil outlets (4) are formed in the exterior of the upper valve body (2), a combined gasket (5) is installed at one end, away from the lower valve body (1), of the upper valve body (2), and a sealing screw (6) is connected to one end, away from the lower valve body (1), of the upper valve body (2) in a threaded manner.

3. The pressure maintaining valve with the pressure maintaining function according to claim 1, wherein the driving assembly comprises a main spring (10) installed on one side of the driving block (11) far away from the return spring (17), one end of the main spring (10) far away from the driving block (11) is provided with a valve core (9), and one side of the upper valve body (2) close to the valve core (9) is provided with an oil through cavity (8).

4. The pressure maintaining valve with the pressure maintaining function according to claim 3, characterized in that a plug (7) is installed inside the lower valve body (1), the size of the top of the plug (7) is smaller than that of the oil through cavity (8), and the top of the plug (7) is in contact with the valve core (9).

5. The pressure maintaining valve with the pressure maintaining function according to claim 1, wherein a steering column (12) is installed on one side of the upper valve body (2) close to the steering top cover (13), a groove matched with the steering column (12) is formed in the outer portion of the steering top cover (13), the movable groove (19) is in a hollow cylindrical shape, and the movable groove (19) penetrates from the lower portion to the upper portion of the oil drain port (4).

6. The pressure retaining valve with pressure retaining function according to claim 5, characterized in that the size of the sealing plate (20) is larger than the size of the oil drain port (4), and the elastic string (21) is located on the side of the sealing plate (20) away from the pulling string (18).

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