CN219299659U

CN219299659U - Hydraulic one-way limiting valve

Info

Publication number: CN219299659U
Application number: CN202320328828.4U
Authority: CN
Inventors: 聂玲玲; 阮丹丹; 聂大凯
Original assignee: Wuhan Yihang Xinli Technology Co ltd
Current assignee: Wuhan Yihang Xinli Technology Co ltd
Priority date: 2023-02-28
Filing date: 2023-02-28
Publication date: 2023-07-04
Anticipated expiration: 2033-02-28

Abstract

The utility model discloses a hydraulic one-way limiting valve, which relates to the technical field of limiting valves and comprises a valve body, wherein a first flow direction groove is formed in the valve body, a second flow direction groove is formed in the valve body and positioned at one side of the first flow direction groove, a first oil port is formed in the valve body, a second oil port is formed in the valve body and positioned at one side far away from the first oil port, mounting plates are oppositely arranged in the first flow direction groove and the second flow direction groove, a first spring is fixedly arranged at one side of each mounting plate, and a piston sleeve is fixedly arranged at one end of each first spring: through set up the check valve structure respectively in first flow to groove and second flow to the groove and through set up first sealed hole and threaded rod and first sealing plug cooperation in the second hydraulic fluid port, can reach the unidirectional adjustment to the flow direction to can prevent the problem of backward flow according to the hydraulic oil of bi-directional cylinder.

Description

Hydraulic one-way limiting valve

Technical Field

The utility model relates to the technical field of limiting valves, in particular to a hydraulic one-way limiting valve.

Background

Hydraulic systems have a wide range of applications in the field of industrial production, the main function of which is to change the pressure of hydraulic oil into a rotational or reciprocating motion of a mechanism. The hydraulic oil circulates in the pipeline of the hydraulic system, and the one-way valve of the hydraulic system plays a role in preventing reverse backflow of the oil, so that the oil can only flow from the liquid inlet to the liquid outlet, but cannot flow from the liquid outlet to the liquid inlet.

According to the one-way limiting valve for the hydraulic system, which is disclosed in the application number 202220468545.5, when the oil cylinder moves to a specified position or the motor rotates to the specified position, the valve core is pushed to move, the oil path of the oil from the control valve, which flows to the oil cylinder or the motor through the oil port A and the oil port B, is cut off, and the oil cylinder or the motor stops moving to play a limiting role; when the oil cylinder or the motor returns, the oil in the oil cylinder or the motor flows back to the control valve through the oil port B, the one-way valve and the oil cylinder port A, a flow path is formed in the valve body, the oil cylinder or the motor can act, and the valve has simple structure, easy realization and high reliability.

However, in the above application, the oil way in the oil port a and the oil port B needs to be cut off by pushing the valve core on one side by the oil cylinder, so that the limiting valve needs to be installed according to the extending and retracting direction of the oil cylinder in the installation process, and is limited to use of the unidirectional oil cylinder, and cannot be matched according to the two extending and retracting directions of the double-rod oil cylinder, so that a certain limitation exists.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides a hydraulic one-way limiting valve, which solves the problems in the background art.

In order to achieve the above purpose, the utility model is realized by the following technical scheme: the utility model provides a unidirectional limiting valve for hydraulic pressure, includes the valve body, first flow to the groove has been seted up to the inside of valve body, the second flow to the groove has been seted up to the inside of valve body and be located one side of first flow to the groove, first hydraulic fluid port has been seted up to the inside of valve body one side and be located one side of keeping away from first hydraulic fluid port, the mounting panel is all installed relatively to the inside of first flow to groove and second flow to the groove, one side fixed mounting of mounting panel has first spring, the one end fixed mounting of first spring has the piston sleeve, the guiding gutter has all been seted up to the inside of first flow to groove and second flow to the groove, piston sleeve and guiding gutter sliding connection, first guiding hole has all been seted up to the both sides of piston sleeve, the second guiding hole has been seted up at the middle part of mounting panel, first sealing hole has been seted up to the inside of second hydraulic fluid port, the internal thread of valve body one side installs the threaded rod, the one end of threaded rod extends to the internally mounted of second flow to the groove has first sealing plug, first sealing plug and first sealing hole.

Preferably, the inside of valve body and be located one side of first flow to the groove and seted up the straight chute, the inside movable mounting in straight chute has the valve rod, the middle part of valve rod and the internally mounted who is located the straight chute have the second sealing plug, the second sealing hole has all been seted up to the inside in straight chute and the both sides that are located the second sealing plug, second sealing plug and second sealing hole cooperation, the second spring has all been cup jointed in the outside of valve rod and the both sides that are located the second sealing plug, the one end and the inner wall contact in straight chute of second spring.

Preferably, a hole matched with the valve rod is formed in the valve body, and a sealing ring is arranged in the hole.

Preferably, the first oil port and the second oil port are communicated with the first flow direction groove and the second flow direction groove.

Preferably, the first oil port and the second oil port are communicated with the direct flow groove and the second sealing hole.

Preferably, the first flow direction groove and the second flow direction groove are both provided with limit grooves matched with the piston sleeve at one side of the mounting plate.

The utility model provides a hydraulic one-way limiting valve, which has the following beneficial effects:

1. this unidirectional limiting valve for hydraulic pressure sets up the check valve structure respectively through first flow to groove and second flow to the groove and through having seted up first sealed hole and threaded rod and first sealing plug cooperation in the second hydraulic fluid port, can reach the unidirectional adjustment to the flow direction to can prevent the problem of backward flow according to the hydraulic oil of bi-directional hydro-cylinder.

2. This unidirectional limiting valve for hydraulic pressure is through direct current groove, valve rod, second sealing plug, second sealing hole and second spring cooperation, need not to consider the problem of hydro-cylinder output direction with unidirectional cylinder complex in-process, alright make the valve body in form the flow path, the compatibility is high.

Drawings

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

fig. 2 is a cross-sectional view of the present utility model.

In the figure: 1. a valve body; 2. a first flow channel; 3. a second flow-to-tank; 101. a first oil port; 102. a second oil port; 5. a mounting plate; 6. a first spring; 7. a piston sleeve; 8. a diversion trench; 9. a first deflector aperture; 10. a second deflector aperture; 11. a first seal bore; 12. a threaded rod; 13. a first sealing plug; 14. a direct current groove; 15. a valve stem; 16. a second sealing plug; 17. a second seal hole; 18. a second spring; 19. and (3) sealing rings.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

Referring to fig. 1 to 2, the present utility model provides a technical solution: the utility model provides a unidirectional limiting valve for hydraulic pressure, including valve body 1, first flow direction groove 2 has been seted up to the inside of valve body 1, second flow direction groove 3 has been seted up to the inside of valve body 1 and be located one side of first flow direction groove 2, first hydraulic fluid port 101 has been seted up to the inside of valve body 1 one side, second hydraulic fluid port 102 has been seted up to the inside of valve body 1 one side and be located one side of keeping away from first hydraulic fluid port 101, first hydraulic fluid port 101 and second hydraulic fluid port 102 all link up with first flow direction groove 2 and second flow direction groove 3, wherein the main effect of first flow direction groove 2 and second flow direction groove 3 is the flow direction that is used for installing two check valve structures and hydraulic oil.

The mounting plate 5 is installed to the inside of first flow to groove 2 and second flow to groove 3, mounting plate 5's one side fixed mounting has first spring 6, piston sleeve 7 is installed to the one end fixed mounting of first spring 6, first flow to groove 2 and the inside of second flow to groove 3 and be located one side of mounting plate 5 all set up with piston sleeve 7 complex spacing groove, the main effect in this spacing groove is used for spacing piston sleeve 7, avoid because the thrust of first spring 6 leads to piston sleeve 7 to produce the condition of displacement to appear, guiding gutter 8 has all been seted up to the inside of first flow to groove 2 and second flow to groove 3, piston sleeve 7 and guiding gutter 8 sliding connection, first water conservancy diversion hole 9 has all been seted up to the both sides of piston sleeve 7, second water conservancy diversion hole 10 has been seted up at the middle part of mounting plate 5, first sealing hole 11 has been seted up to the inside of second hydraulic fluid port 102, threaded rod 12 is installed to the internal thread on one side of valve body 1, the one end of threaded rod 12 extends to the internally mounted of second flow to first sealing plug 13 of second flow to groove 3, first sealing plug 13 cooperates with first sealing hole 11, through the thrust rod 2 and second flow to the inside of second flow to groove 3, can prevent through setting up two-way flow to the hydraulic oil port in order to reach the two-way sealing hole 13 with the second sealing plug structure according to the two-way flow direction adjusting device 12 in the second flow direction to the second sealing hole 11.

The inside of valve body 1 and lie in one side of first flow to groove 2 and seted up straight chute 14, the inside movable mounting of straight chute 14 has valve rod 15, the middle part of valve rod 15 and lie in the internally mounted of straight chute 14 have second sealing plug 16, the second sealed hole 17 has all been seted up to the inside of straight chute 14 and lie in the both sides of second sealing plug 16, first hydraulic fluid port 101 and second hydraulic fluid port 102 all link up with straight chute 14 and second sealed hole 17, second sealing plug 16 cooperates with second sealed hole 17, the outside of valve rod 15 and lie in the both sides of second sealing plug 16 all cup joint second spring 18, the one end of second spring 18 contacts with the inner wall of straight chute 14, the hole with valve rod 15 cooperation has been seted up to the inside of valve body 1, be provided with sealing washer 19 in the hole, wherein the main role of sealing washer 19 is used for increasing the leakproofness with the downthehole of valve rod 15 cooperation, through straight chute 14, valve rod 15, second sealing plug 16, second sealed hole 17 and second spring 18 cooperation, need not consider the problem of hydro-cylinder output direction in the process with the one-way hydro-cylinder cooperation, can make 1 form the flow path high compatibility compatible.

In sum, this unidirectional limiting valve for hydraulic pressure, during the use, hydraulic oil can be followed in the first hydraulic fluid port 101 and is got into and link up in the back from the second hydraulic fluid port 102 after directly flowing into the chute 14 in the normal use, just can also link up to the first hydraulic fluid port 101 in the same way through the inside of chute 14 with the hydraulic oil in the second hydraulic fluid port 102, only need set up the both ends of valve rod 15 in the hydro-cylinder arrival position after the installation is accomplished, promote the inside one end of valve rod 15 to the chute 14 after the hydro-cylinder reaches the assigned position, simultaneously the second sealing plug 16 in the outside of valve rod 15 is plugged into in the second sealing hole 17, alright plug 14 this moment, again according to the direction of preventing the backward flow according to needs adjusts the flow according to threaded rod 12 and first sealing plug 13, just can pass through the inside of first sealing plug 13 after first sealing plug 13 is plugged into the inside of first sealing hole 11, then can pass through the inside of valve body 1 through pressure promotion piston sleeve 7 after entering the inside of first hydraulic fluid port 101 and flow into the inside of first guiding hole 8 this moment and flow into the inside of first guiding hole 9 through the second guiding hole 10 and flow out and get into the inside of second hydraulic fluid port 102, can prevent through the inside of first hydraulic fluid port 101 from flowing into the inside the second sealing hole 102 when the direction can not be followed in the direction of the direction is adjusted according to the first hydraulic fluid port 101 in the direction can be followed in the direction of the first sealing plug 101 in order to prevent the backward flow direction of the internal direction can be adjusted according to the first sealing plug 101.

The foregoing 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 scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims

1. The utility model provides a one-way limiting valve for hydraulic pressure, includes valve body (1), its characterized in that: the inside of valve body (1) has seted up first flow direction groove (2), the inside of valve body (1) and be located one side of first flow direction groove (2) and have seted up second flow direction groove (3), first hydraulic fluid port (101) have been seted up to the inside of valve body (1) one side, first hydraulic fluid port (102) have been seted up to the inside of valve body (1) and be located one side of keeping away from first hydraulic fluid port (101), mounting panel (5) are all installed relatively to the inside of first flow direction groove (2) and second flow direction groove (3), one side fixed mounting of mounting panel (5) has first spring (6), the one end fixed mounting of first spring (6) has piston sleeve (7), first flow direction groove (2) and the inside of second flow direction groove (3) have all been seted up guiding gutter (8), piston sleeve (7) and guiding gutter (8) sliding connection, first guiding hole (9) have all been seted up to the both sides of piston sleeve (7), the middle part in mounting panel (5) has second guiding hole (10), second flow direction groove (2) have first sealing thread (12) have been installed to the inside of first flow direction groove (3) to one side of valve body (12), the first sealing plug (13) is matched with the first sealing hole (11).

2. The unidirectional limiting valve for hydraulic pressure of claim 1, wherein: the inside of valve body (1) and be located one side of first flow to groove (2) and seted up direct current groove (14), the inside movable mounting in direct current groove (14) has valve rod (15), the middle part of valve rod (15) and be located the internally mounted in direct current groove (14) have second sealing plug (16), second sealing hole (17) have all been seted up in the inside of direct current groove (14) and be located the both sides of second sealing plug (16), second sealing plug (16) and second sealing hole (17) cooperation, second spring (18) have all been cup jointed in the outside of valve rod (15) and be located the both sides of second sealing plug (16), the one end of second spring (18) and the inner wall contact of direct current groove (14).

3. The unidirectional limiting valve for hydraulic pressure of claim 1, wherein: the valve is characterized in that a hole matched with the valve rod (15) is formed in the valve body (1), and a sealing ring (19) is arranged in the hole.

4. The unidirectional limiting valve for hydraulic pressure of claim 1, wherein: the first oil port (101) and the second oil port (102) are communicated with the first flow direction groove (2) and the second flow direction groove (3).

5. The unidirectional limiting valve for hydraulic pressure of claim 1, wherein: the first oil port (101) and the second oil port (102) are communicated with the direct-current groove (14) and the second sealing hole (17).

6. The unidirectional limiting valve for hydraulic pressure of claim 1, wherein: and limit grooves matched with the piston sleeve (7) are formed in the first flow direction groove (2) and the second flow direction groove (3) and are positioned on one side of the mounting plate (5).