CN219262825U

CN219262825U - Pneumatic hydraulic relief valve

Info

Publication number: CN219262825U
Application number: CN202320741158.9U
Authority: CN
Inventors: 司成俊
Original assignee: Changzhi Vocational And Technical College
Current assignee: Changzhi Vocational And Technical College
Priority date: 2023-04-04
Filing date: 2023-04-04
Publication date: 2023-06-27
Anticipated expiration: 2033-04-04

Abstract

The utility model discloses a pneumatic hydraulic load release valve, which comprises a mounting plate, wherein the middle part of one side of the mounting plate is fixedly connected with a load release valve main body, the top of the back surface of the load release valve main body is provided with a mounting hole, one side of the inner wall of the mounting hole is sleeved with an O-shaped sealing ring, one side of the inner wall of the O-shaped sealing ring is spliced with a mounting sleeve rod, and the tail end of the mounting sleeve rod is fixedly connected with a hand pulling plate. According to the utility model, through the arrangement of the O-shaped sealing ring and the mounting sleeve rod, the mounting sleeve rod is pulled out through the hand pulling plate at the tail end, then the mounting sleeve rod is detached from the O-shaped sealing ring and can be mounted in a sealing way after being mounted, the output end of the hydraulic cylinder stretches the telescopic rod through the air outlet pipe, so that the telescopic rod drives the connecting rod at the front end to stretch, the limiting baffle drives the conical inserted rod on the surface to push, the conical valve at the front side of the conical inserted rod is pushed to form pressure extrusion in the conical seat, and the spring is convenient for resetting the limiting baffle, so that the effect of sealing, dismounting and mounting the mounting sleeve rod is achieved.

Description

Pneumatic hydraulic relief valve

Technical Field

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

Background

The relief valve is a valve which can enable the hydraulic pump to relieve load under certain conditions, the relief valve is usually an overflow valve with a two-position two-way valve, the relief valve is used for setting the main pressure of a system when no load is released, the pressure oil directly returns to the oil tank when the load is released, the pressure of the oil pump is reduced to be approximately zero, so that some loop control is realized, the service life of the oil pump is prolonged, the power consumption is reduced, and the existing relief valve is used for relieving the pressure by manually controlling the relief valve.

Patent document CN204755451U discloses a "pneumatic hydraulic load release valve", which realizes the hydraulic load release function by pushing the hydraulic check valve through the cylinder piston. According to the pneumatic hydraulic load release valve, the piston is driven by compressed air, the one-way valve in the hydraulic circuit is jacked up, the load release oil return function of the hydraulic circuit is realized, an electromagnet is not needed by the valve body, the cost is low, and the performance is reliable. ".

When the device is used, the pressure inside the piston pushing device is used for realizing the load-discharging oil return function of the hydraulic circuit, but when the device is pneumatically pushed, the pneumatic pressure releasing device is difficult to stably control to disassemble, the whole sealing performance of the load-discharging valve can be influenced when the pneumatic pressure releasing device is disassembled, the secondary use effect of the load-discharging valve is poor, and the load-discharging valve needs to be improved.

Disclosure of Invention

The present utility model is directed to a pneumatic hydraulic relief valve, which solves the above-mentioned problems.

In order to achieve the above purpose, the utility model provides a pneumatic hydraulic load release valve, which comprises a mounting plate, wherein the middle part of one side of the mounting plate is fixedly connected with a load release valve main body, the top of the back surface of the load release valve main body is provided with a mounting hole, one side of the inner wall of the mounting hole is sleeved with an O-shaped sealing ring, one side of the inner wall of the O-shaped sealing ring is inserted with a mounting sleeve rod, the tail end of the mounting sleeve rod is fixedly connected with a hand pulling plate, one side of the inner wall of the mounting sleeve rod is fixedly connected with a hydraulic cylinder, the output end of the hydraulic cylinder is provided with an air outlet pipe, the front end of the air outlet pipe is fixedly connected with a telescopic rod, the front end of the telescopic rod is fixedly connected with a connecting rod, and the front end of the connecting rod is fixedly connected with a limit baffle.

Preferably, the middle part fixedly connected with toper inserted bar on limit baffle surface, one side on limit baffle surface is connected with the spring, the front end of spring is connected with the cone valve.

Preferably, the middle part fixedly connected with awl seat of the main part inner wall of the load-discharging valve, and the middle part of awl seat one side cup joints in the surface of awl valve, the top threaded connection of load-discharging valve main part surface has first sealed lid.

Preferably, a connecting pipe is arranged on one side of the inner wall of the load-discharging valve main body, a second sealing cover is inserted into the bottom of the surface of the load-discharging valve main body, and a sealing gasket is fixedly connected on one side of the back of the second sealing cover.

Preferably, the middle part at the back of the second sealing cover is fixedly connected with a sealing rod, and one side of the surface of the sealing rod is fixedly connected with a sealing ring.

Preferably, all around the sealing rod front end have all been seted up the inlet opening of equidimension difference, all around the sealing rod surface have all been seted up the apopore of equidimension difference.

Preferably, one side of the bottom of the load-discharging valve main body is provided with an orifice, and the middle part of the top of the load-discharging valve main body is fixedly connected with a reinforcing plate.

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

1. according to the utility model, through the arrangement of the load-discharging valve main body, the O-shaped sealing ring, the mounting sleeve rod, the hydraulic cylinder, the telescopic rod, the connecting rod, the limiting baffle, the conical inserted rod, the spring and the conical valve, the mounting sleeve rod is pulled out through the hand pulling plate at the tail end, then the mounting sleeve rod is separated from the O-shaped sealing ring and can be mounted in a sealing way after being mounted, the telescopic rod is telescopic through the air outlet pipe at the output end of the hydraulic cylinder, so that the telescopic rod drives the connecting rod at the front end to be telescopic, the limiting baffle drives the conical inserted rod on the surface to push the conical inserted rod, so that the conical valve at the front side is pushed by the conical inserted rod to form pressure extrusion in the conical seat, the spring is convenient for returning the limiting baffle, the sealing and dismounting effects of the mounting sleeve rod are achieved, and the operation of workers is facilitated.

2. According to the utility model, through the arrangement of the second sealing cover, the sealing rod, the sealing ring, the water inlet hole, the water outlet hole and the throttling hole, the water inlet hole is connected and communicated with the water outlet hole on the surface, so that enough liquid is discharged from different water inlet holes and water outlet holes, and the sealing rod is inserted into the deepest part of the discharging valve main body when the liquid is not required to be discharged, and the throttling hole at the bottom is blocked by the sealing ring on the surface of the sealing rod, so that the effect of discharging liquid with different flow rates is achieved.

Drawings

FIG. 1 is a perspective view of the structure of the present utility model;

FIG. 2 is a perspective view of a spring structure of the present utility model;

FIG. 3 is a perspective view of the seal rod structure of the present utility model;

fig. 4 is a schematic view of the hydraulic cylinder structure of the present utility model.

In the figure: 1. a mounting plate; 2. a relief valve body; 3. an O-ring seal; 4. installing a loop bar; 5. a hand pulling plate; 6. a hydraulic cylinder; 7. a telescopic rod; 8. a connecting rod; 9. a limit baffle; 10. a conical inserted link; 11. a spring; 12. a cone valve; 13. a cone seat; 14. a first sealing cover; 15. a connecting pipe; 16. a second sealing cover; 17. a sealing gasket; 18. a sealing rod; 19. a seal ring; 20. a water inlet hole; 21. a water outlet hole; 22. an orifice.

Detailed Description

Referring to fig. 1 to 4, a pneumatic hydraulic relief valve;

including mounting panel 1, the middle part fixedly connected with of mounting panel 1 one side lets out load valve main part 2, the mounting hole has been seted up at the top of letting out the back of load valve main part 2, O shape sealing washer 3 has been cup jointed to one side of mounting hole inner wall, one side of O shape sealing washer 3 inner wall has pegged graft and has been installed loop bar 4, the tail end fixedly connected with hand strap 5 of installation loop bar 4, one side fixedly connected with pneumatic cylinder 6 of installation loop bar 4 inner wall, the outlet duct is installed to the output of pneumatic cylinder 6, the front end fixedly connected with telescopic link 7 of outlet duct, the front end fixedly connected with linking rod 8 of telescopic link 7, the front end fixedly connected with limit baffle 9 of linking rod 8, the middle part fixedly connected with toper inserted bar 10 on limit baffle 9 surface, one side of limit baffle 9 surface is connected with spring 11, the front end of spring 11 is connected with cone valve 12.

During the use, install O shape sealing washer 3 through the mounting hole screw thread at the back of letting off valve main part 2, peg graft in the inside of O shape sealing washer 3 and install installation loop bar 4, make installation loop bar 4 pull through the hand pulling board 5 of tail end and take out, then install loop bar 4 and O shape sealing washer 3 split, and can keep sealed installation after the installation, and be provided with pneumatic cylinder 6 in the inside of installation loop bar 4, the staff switches on pneumatic cylinder 6, the output of pneumatic cylinder 6 is through the outlet duct with telescopic link 7 flexible processing, make telescopic link 7 drive the flexible processing of linking pole 8 of front end, and be provided with limit baffle 9 at the front end of linking pole 8, limit baffle 9 drives the toper inserted bar 10 promotion on surface, make toper inserted bar 10 promote the taper valve 12 of front side and form pressure extrusion in the inside conical seat 13, and be connected with spring 11 at limit baffle 9 and the middle part of taper valve 12, make spring 11 be convenient for with limit baffle 9 and location.

The middle part fixedly connected with awl seat 13 of the inner wall of the relief valve main part 2, and the middle part of awl seat 13 one side cup joints in the surface of awl valve 12, the top threaded connection of relief valve main part 2 surface has first sealed lid 14, connecting pipe 15 has been seted up to one side of relief valve main part 2 inner wall, the bottom on relief valve main part 2 surface has pegged graft and has sealed lid 16 of second, one side fixedly connected with sealed 17 of the back of sealed lid 16, the middle part fixedly connected with sealing rod 18 of the back of sealed 16, one side fixedly connected with sealing ring 19 on sealing rod 18 surface, the inlet opening 20 of different sizes all has all been seted up to the department all around of sealing rod 18 front end, orifice 22 has all been seted up on one side of relief valve main part 2 bottom, the middle part fixedly connected with reinforcing plate at relief valve main part 2 top.

When the sealing device is used, the second sealing cover 16 is inserted into the surface of the discharging valve main body 2, the sealing gasket 17 is arranged on the surface of the second sealing cover 16 to seal the discharging valve main body 2, the sealing rod 18 is arranged in the middle of the surface, the water inlet hole 20 is arranged at the front end of the sealing rod 18, the water inlet hole 20 is connected with the water outlet hole 21 on the surface, so that enough liquid is discharged from different water inlet holes 20 and water outlet holes 21, the sealing rod 18 is inserted into the deepest part of the discharging valve main body 2 when the liquid is not required to be discharged, and the throttling hole 22 at the bottom is blocked by the sealing ring 19 on the surface of the sealing rod 18.

The utility model provides a hydraulic pressure valve, the theory of operation, installation loop bar 4 pulls through the hand pulling plate 5 of tail end and draws, then installation loop bar 4 and O shape sealing washer 3 split, and can keep sealed installation after the installation, the staff is with hydraulic cylinder 6 switch on the power, the output of hydraulic cylinder 6 is through the flexible processing of extension rod 7, make the extension rod 7 drive the flexible processing of the linking rod 8 of front end, limit baffle 9 drives the toper inserted bar 10 promotion on surface, make toper inserted bar 10 promote the cone valve 12 of front side and form the pressure extrusion in conical seat 13 inside, and spring 11 is convenient for return limit baffle 9, be provided with sealed pad 17 with its sealing processing at the surface of second sealed lid 16, inlet opening 20 is connected with the apopore 21 on surface and is link up, make inside liquid by different inlet opening 20 and apopore 21 discharge sufficient liquid, and insert the sealing rod 18 to the deepest of pressure valve main part 2 when not needing to discharge, seal the orifice 22 of bottom through the sealing ring 19 on sealing rod 18 surface.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model 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 pneumatic hydraulic pressure relief valve, includes mounting panel (1), its characterized in that: the utility model discloses a load valve, including mounting panel (1), mounting panel, connecting rod (8), connecting rod (9) are installed to the middle part fixedly connected with load valve main part (2) of mounting panel (1) one side, the mounting hole has been seted up at the top at load valve main part (2) back, O shape sealing washer (3) have been cup jointed to one side of mounting hole inner wall, install loop bar (4)'s tail end fixedly connected with hand pulling plate (5), one side fixedly connected with pneumatic cylinder (6) of installation loop bar (4) inner wall, the outlet duct is installed to the output of pneumatic cylinder (6), the front end fixedly connected with telescopic link (7) of outlet duct, the front end fixedly connected with linking rod (8).

2. A pneumatic hydraulic relief valve according to claim 1 wherein: the middle part fixedly connected with toper inserted bar (10) on limit baffle (9) surface, one side on limit baffle (9) surface is connected with spring (11), the front end of spring (11) is connected with cone valve (12).

3. A pneumatic hydraulic relief valve according to claim 1 wherein: the middle part fixedly connected with awl seat (13) of the inner wall of let out lotus valve main part (2), and the middle part of awl seat (13) one side cup joints in the surface of awl valve (12), the top threaded connection of let out lotus valve main part (2) surface has first sealed lid (14).

4. A pneumatic hydraulic relief valve according to claim 1 wherein: the connecting pipe (15) is arranged on one side of the inner wall of the load-discharging valve main body (2), a second sealing cover (16) is inserted into the bottom of the surface of the load-discharging valve main body (2), and a sealing gasket (17) is fixedly connected to one side of the back of the second sealing cover (16).

5. A pneumatic hydraulic relief valve according to claim 4 wherein: the middle part at the back of the second sealing cover (16) is fixedly connected with a sealing rod (18), and one side of the surface of the sealing rod (18) is fixedly connected with a sealing ring (19).

6. A pneumatic hydraulic relief valve according to claim 5 wherein: the periphery of the front end of the sealing rod (18) is provided with water inlet holes (20) with different sizes, and the periphery of the surface of the sealing rod (18) is provided with water outlet holes (21) with different sizes.

7. A pneumatic hydraulic relief valve according to claim 1 wherein: an orifice (22) is formed in one side of the bottom of the load release valve main body (2), and a reinforcing plate is fixedly connected to the middle of the top of the load release valve main body (2).