CN217761503U

CN217761503U - Overflow valve of hydraulic system

Info

Publication number: CN217761503U
Application number: CN202221078757.9U
Authority: CN
Inventors: 吕燕; 何醒平; 吕超
Original assignee: Guangzhou Zhanping Hydraulic Power Machinery Co ltd
Current assignee: Guangzhou Zhanping Hydraulic Power Machinery Co ltd
Priority date: 2022-05-07
Filing date: 2022-05-07
Publication date: 2022-11-08
Anticipated expiration: 2032-05-07

Abstract

The utility model discloses a hydraulic system's overflow valve, including connecting the base, the upper end of connecting the base is equipped with overflow valve casing A, overflow valve casing A's upper end is equipped with overflow valve casing B, overflow valve casing B's one end is equipped with the screw thread seat, the inboard of screw thread seat is equipped with the screw thread post. The utility model discloses when the oil mass is too strong, oil flows in draining port A through discharge gate A, case A retreats through the pressure of oil, remove the restriction to case B, oil passes through draining port B and the inside oil fusion of overflow valve, make case B also shift up on the pressure of oil, thereby open discharge gate B's passageway, and then shunt oil through the overflow valve, be convenient for control decompression valve port aperture, realize export decompression function, when the oil mass is normal, case B is through moving down, case A card goes into draw-in groove and draining port B's inboard, improve device's leakproofness.

Description

Overflow valve of hydraulic system

Technical Field

The utility model relates to an overflow valve technical field specifically is a hydraulic system's overflow valve.

Background

Along with the rapid development of social economy, the effect of overflow valve is the key safety application guarantee of guaranteeing pipeline under pressure, pressure vessel, in order to guarantee the normal work of overflow valve and prolong the life of overflow valve, in use should accomplish that whether the overflow valve in service leaks, abnormal phenomena such as card hinders and the spring corrosion regularly to whether the lock nut of observing adjusting the swivel nut and adjusting collar holding screw is not hard up, if the discovery problem in time takes appropriate maintenance measure.

However, the internal clearance of the existing overflow valve is enlarged, the sealing performance is poor during connection, and the oil leakage condition is easy to occur; therefore, the existing requirements are not met, and an overflow valve of a hydraulic system is provided for the requirement.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a hydraulic system's overflow valve to current overflow valve internal clearance who proposes in solving above-mentioned background art increases, and the leakproofness is relatively poor when connecting, appears the condition scheduling problem of oil leak easily.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a hydraulic system's overflow valve, includes the connection base, the upper end of connection base is equipped with overflow valve casing A, overflow valve casing A's upper end is equipped with overflow valve casing B, overflow valve casing B's one end is equipped with the screw thread seat, the inboard of screw thread seat is equipped with the screw thread post, the one end of screw thread post extends to overflow valve casing B's inboard and is equipped with case A, case A's upper and lower both ends all are equipped with the fixture block, case A's lower extreme is located overflow valve casing A's inboard and is equipped with case B, case B's surface is equipped with two joint strip, case B's central point puts and is equipped with drain port B, overflow valve casing A's one end is equipped with discharge gate B and discharge gate A respectively, one side of discharge gate A is equipped with drain port A.

Preferably, the connection base and the overflow valve shell A are of an integral structure, connecting blocks are arranged on two sides of the overflow valve shell A and two sides of the overflow valve shell B, threaded holes are formed in the inner sides of the connecting blocks, bolts are arranged on the inner sides of the threaded holes, and the overflow valve shell A is connected with the overflow valve shell B through the bolts.

Preferably, the inner side of the threaded seat is provided with internal threads, and the threaded column is meshed with the internal threads.

Preferably, the rear ends of the fixture blocks are provided with movable grooves, springs C are arranged on the inner sides of the movable grooves, the movable grooves are connected with the springs C through bolts, one end of one fixture block is located on the inner wall of the overflow valve shell B and is provided with a clamping groove, the clamping groove is inserted into the inner side of the clamping groove through the springs C, and the other fixture block is inserted into the inner side of the oil drain opening B.

Preferably, the rear end of the valve core B is provided with a spring B, the overflow valve shell A is connected with the spring B through a bolt, and the overflow valve shell A is connected with the valve core B through the spring B.

Preferably, the outer surface of the valve core B is provided with two limiting grooves, and the sealing rubber strip is sleeved on the inner sides of the limiting grooves.

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

1. the utility model discloses when the oil mass is too strong, one side through discharge gate A is equipped with draining port A, discharge gate A and draining port A through connection, and draining port A's one end is equipped with case A, and then be convenient for oil to flow into draining port A through discharge gate A, case A retreats through the pressure of oil, remove the restriction to case B, oil passes through draining port B and the inside oil fusion of overflow valve, make case B also shift up on the pressure of oil, thereby open discharge gate B's passageway, and then shunt oil through the overflow valve, be convenient for control decompression valve port, realize export decompression function, when the oil mass is normal, case B is through moving down, case A card goes into the inboard of draw-in groove and draining port B, improve the leakproofness of device, oil directly flows out through discharge gate A through the feed inlet.

Drawings

Fig. 1 is a schematic overall structure diagram of the present invention;

FIG. 2 is a cross-sectional view of the entire device of the present invention;

fig. 3 is a schematic view of a partial structure of the valve core a of the present invention;

fig. 4 is a schematic view of a partial structure of the valve element B of the present invention.

In the figure: 1. connecting a base; 2. a relief valve housing A; 3. an overflow valve housing B; 4. a bolt; 5. connecting blocks; 6. a threaded seat; 7. a handle; 8. a threaded post; 9. sealing rubber strips; 10. a valve core A; 11. a spring A; 12. an oil drainage port A; 13. an oil drainage port B; 14. a spring B; 15. a discharge hole B; 16. a valve core B; 17. a discharge hole A; 18. a feed inlet; 19. a movable groove; 20. a clamping block; 21. a card slot; 22. a spring C; 23. a limiting groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the 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.

Referring to fig. 1 to 4, the present invention provides an embodiment of: an overflow valve of a hydraulic system comprises a connecting base 1, an overflow valve shell A2 is arranged at the upper end of the connecting base 1, an overflow valve shell B3 is arranged at the upper end of the overflow valve shell A2, a thread seat 6 is arranged at one end of the overflow valve shell B3, a thread column 8 is arranged on the inner side of the thread seat 6, a valve core A10 is arranged at one end of the thread column 8 extending to the inner side of the overflow valve shell B3, clamping blocks 20 are arranged at the upper end and the lower end of the valve core A10, a valve core B16 is arranged at the lower end of the valve core A10 and positioned on the inner side of the overflow valve shell A2, two sealing rubber strips 9 are arranged on the outer surface of the valve core B16, an oil drainage port B13 is arranged at the central position of the valve core B16, a discharge port B15 and a discharge port A17 are respectively arranged at one end of the overflow valve shell A2, one side of the discharge port A17 is provided with an oil drainage port A12, when the oil quantity is too strong, the oil flows into the oil drainage port A12 through the discharge port A17, the valve core A10 retreats through the pressure of the oil, the limitation on the valve core B16 is removed, the oil is fused with the oil in the overflow valve through the oil drainage port B13, the valve core B16 also moves upwards under the pressure of the oil, a channel of the discharge port B is opened, the oil is further shunted through the overflow valve, the opening of a pressure reduction valve port is convenient to control, the pressure reduction function of an outlet is realized, when the oil quantity is normal, the valve core B16 moves downwards, the valve core A10 is clamped into the inner sides of the clamping groove 21 and the oil drainage port B13, and the sealing performance of the device is improved.

Further, the connection base 1 and the overflow valve housing A2 are of an integral structure, the two sides of the overflow valve housing A2 and the two sides of the overflow valve housing B3 are both provided with connection blocks 5, the inner sides of the connection blocks 5 are provided with threaded holes, the inner sides of the threaded holes are provided with bolts 4, and the overflow valve housing A2 is connected with the overflow valve housing B3 through the bolts 4.

Through adopting above-mentioned technical scheme, through connecting base 1 and overflow valve casing A2 structure as an organic whole, the both sides of overflow valve casing A2 and overflow valve casing B3 all are equipped with connecting block 5, and the inboard of connecting block 5 is equipped with the screw hole, and the inboard of screw hole is equipped with bolt 4, and overflow valve casing A2 and overflow valve casing B3 pass through bolt 4 and connect, and then the overflow valve casing A2 and the connection of overflow valve casing B3 of being convenient for.

Further, one end of the threaded column 8 is provided with a handle 7, the other end of the threaded column 8 is provided with a spring A11, the threaded column 8 is connected with the spring A11 through a bolt, and the threaded column 8 is connected with the valve core A10 through the spring A11.

Through adopting above-mentioned technical scheme, one end through screw thread post 8 is equipped with handle 7, and the other end of screw thread post 8 is equipped with spring A11, and screw thread post 8 and spring A11 pass through bolted connection, and screw thread post 8 passes through spring A11 to be connected with case A10, and then the screw thread post 8 of being convenient for is connected with case A10.

Further, the inner side of the threaded seat 6 is provided with internal threads, and the threaded column 8 is meshed with the internal threads.

Through adopting above-mentioned technical scheme, the inboard through screw thread seat 6 is equipped with the internal thread, and threaded column 8 and internal thread intermeshing, and then the screw thread seat 6 of being convenient for extends to overflow valve casing B3.

Further, the rear end of each fixture block 20 is provided with a movable groove 19, a spring C22 is arranged on the inner side of the movable groove 19, the movable groove 19 is connected with the spring C22 through a bolt, one end of one fixture block 20 is located on the inner wall of the relief valve shell B3 and is provided with a clamping groove 21, the clamping groove 21 is inserted into the inner side of the clamping groove 21 through the spring C22, and the other fixture block 20 is inserted into the inner side of the oil drain opening B13.

Through adopting above-mentioned technical scheme, be equipped with movable groove 19 through the rear end of fixture block 20, the inboard of movable groove 19 is equipped with spring C22, and movable groove 19 passes through the bolt and is connected with spring C22, and the inner wall that one of them fixture block 20's one end is located overflow valve casing B3 is equipped with draw-in groove 21, and draw-in groove 21 pegs graft in the inboard of draw-in groove 21 through spring C22, and wherein another fixture block 20 pegs graft in the inboard of draining port B13, and then be convenient for case A10 to realize the decompression function.

Further, a spring B14 is arranged at the rear end of the valve core B16, the relief valve shell A2 is connected with the spring B14 through a bolt, and the relief valve shell A2 is connected with the valve core B16 through the spring B14.

By adopting the technical scheme, the spring B14 is arranged at the rear end of the valve core B16, the overflow valve shell A2 is connected with the spring B14 through a bolt, and the overflow valve shell A2 is connected with the valve core B16 through the spring B14, so that the valve core B16 is conveniently connected.

Further, the outer surface of the valve core B16 is provided with two limiting grooves 23, and the sealing rubber strip 9 is sleeved on the inner sides of the limiting grooves 23.

Through adopting above-mentioned technical scheme, the surface through case B16 is equipped with two spacing grooves 23, and joint strip 9 cup joints the inboard at spacing groove 23, and then is convenient for improve the leakproofness of overflow valve.

The working principle is as follows: when the oil quantity is too strong, an oil drainage port A12 is arranged on one side of a discharge port A17, the discharge port A17 is in through connection with the oil drainage port A12, one end of the oil drainage port A12 is provided with a valve core A10, oil can conveniently flow into the oil drainage port A12 through the discharge port A17, the valve core A10 retreats under the pressure of the oil, the limitation on a valve core B16 is removed, the oil is fused with the oil in the overflow valve through an oil drainage port B13, the valve core B16 moves upwards under the pressure of the oil, a channel of the discharge port B is opened, the oil is divided through the overflow valve, the opening of a pressure reduction valve port is conveniently controlled, the pressure reduction function of an outlet is realized, when the oil quantity is normal, the valve core B16 moves downwards, the valve core A10 is clamped into the inner sides of a clamping groove 21 and the oil drainage port B13, the sealing performance of the device is improved, and the oil directly flows out through the discharge port A17 through a feed port 18.

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 hydraulic system's overflow valve, includes connection base (1), its characterized in that: the upper end of connecting base (1) is equipped with overflow valve casing A (2), the upper end of overflow valve casing A (2) is equipped with overflow valve casing B (3), the one end of overflow valve casing B (3) is equipped with screw thread seat (6), the inboard of screw thread seat (6) is equipped with screw thread post (8), the inboard that the one end of screw thread post (8) extended to overflow valve casing B (3) is equipped with case A (10), the upper and lower both ends of case A (10) all are equipped with fixture block (20), the inboard that the lower extreme of case A (10) is located overflow valve casing A (2) is equipped with case B (16), the surface of case B (16) is equipped with two joint strip (9), the central point of case B (16) puts and is equipped with draining opening B (13), the one end of overflow valve casing A (2) is equipped with discharge gate B (15) and discharge gate A (17) respectively, one side of discharge gate A (17) is equipped with draining opening A (12).

2. The relief valve of a hydraulic system according to claim 1, characterized in that: connect base (1) and overflow valve casing A (2) structure as an organic whole, the both sides of overflow valve casing A (2) and overflow valve casing B (3) all are equipped with connecting block (5), the inboard of connecting block (5) is equipped with the screw hole, the inboard of screw hole is equipped with bolt (4), overflow valve casing A (2) and overflow valve casing B (3) are connected through bolt (4).

3. The relief valve of a hydraulic system according to claim 1, wherein: one end of the threaded column (8) is provided with a handle (7), the other end of the threaded column (8) is provided with a spring A (11), the threaded column (8) is connected with the spring A (11) through a bolt, and the threaded column (8) is connected with the valve core A (10) through the spring A (11).

4. The relief valve of a hydraulic system according to claim 1, characterized in that: the inner side of the threaded seat (6) is provided with internal threads, and the threaded column (8) is meshed with the internal threads.

5. The relief valve of a hydraulic system according to claim 1, characterized in that: the rear end of each clamping block (20) is provided with a movable groove (19), the inner side of each movable groove (19) is provided with a spring C (22), each movable groove (19) is connected with the corresponding spring C (22) through a bolt, one end of each clamping block (20) is located on the inner wall of the overflow valve shell B (3) and is provided with a clamping groove (21), each clamping groove (21) is inserted into the inner side of the corresponding clamping groove (21) through the corresponding spring C (22), and the other clamping block (20) is inserted into the inner side of the corresponding oil drainage opening B (13).

6. The relief valve of a hydraulic system according to claim 1, characterized in that: the rear end of the valve core B (16) is provided with a spring B (14), the overflow valve shell A (2) is connected with the spring B (14) through a bolt, and the overflow valve shell A (2) is connected with the valve core B (16) through the spring B (14).

7. The relief valve of a hydraulic system according to claim 1, characterized in that: the outer surface of the valve core B (16) is provided with two limiting grooves (23), and the sealing rubber strip (9) is sleeved on the inner sides of the limiting grooves (23).