Leak-proof device for hydraulic valve group

Abstract

The utility model discloses a hydraulic valve group leakproof device which comprises a hydraulic valve block, an oil inlet is formed in the outer side of the hydraulic valve block, a valve body is arranged on the upper side of the hydraulic valve block, a groove body space is formed in the valve body, a circular ring cylinder is arranged in the groove body space, and a valve rod is arranged in the circular ring cylinder. A valve element head is arranged in the groove body space, the annular cylinder is fixedly connected with the valve body, the upper side of the annular cylinder is fixedly connected with a second spring, the other end of the second spring is fixedly connected with a circular truncated cone block, and the circular truncated cone block is in sliding connection with the valve body. Through the arrangement of a valve element column, a circular truncated cone block, a second spring and an annular column body, when a rubber O-shaped ring is abraded and damaged in the frequent movement and use process of a valve element, the hydraulic valve set can still seal the space of a groove body and can be continuously used, workers do not need to replace the hydraulic valve set, and the service life of the hydraulic valve set is greatly prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of valve equipment, in particular to a hydraulic valve group anti-leakage device. Background Art

[0002] Hydraulic valves are key components in hydraulic systems, controlling the pressure, flow, and direction of fluids. Check valves allow fluid to flow in only one direction, preventing reverse flow. These valves are widely used in hydraulic systems, particularly where protection from reverse flow is crucial.

[0003] In the existing one-way valve, there is a rubber O-ring on the outside of the valve core, which is used to seal the space inside the valve body. When the valve core is frequently used, the rubber O-ring is worn and damaged. At this time, the valve core cannot achieve the purpose of sealing the groove space, and the one-way valve is damaged. A new one-way valve needs to be replaced, which is quite troublesome. Utility Model Content

[0004] In order to overcome the shortcoming of the rubber O-ring on the valve core in the prior art that is not durable, one of the purposes of the utility model is to provide a hydraulic valve group anti-leakage device.

[0005] One of the purposes of the present utility model is achieved by adopting the following technical solution: a hydraulic valve group anti-leakage device, comprising a hydraulic valve block: an oil inlet is provided on the outer side of the hydraulic valve block, a valve body is provided on the upper side of the hydraulic valve block, a slot space is provided inside the valve body, a circular cylinder is provided inside the slot space, a valve core head is provided inside the slot space, the circular cylinder and the valve body are fixedly connected, a second spring is fixedly connected to the upper side of the circular cylinder, the other end of the second spring is fixedly connected to a frustum block, and the frustum block and the valve body are slidably connected. The provision of the frustum block provides secondary protection for the hydraulic valve group. Even if the O-type rubber ring on the outer side of the valve core head is damaged, the frustum block is sealed, so that the oil will not flow out at will, which greatly extends the service life of the hydraulic valve group and also extends the service life of the hydraulic valve group.

[0006] According to the hydraulic valve group anti-leakage device, the oil inlet is threaded, and a sealing rubber ring can be added at the oil inlet of the threaded oil inlet to greatly improve the sealing performance and prevent the oil from flowing out freely.

[0007] According to the anti-leakage device for a hydraulic valve group, two second springs are provided. The provision of two springs makes the sealing of the frustum more stable, which is beneficial to the unidirectionality of the hydraulic valve group.

[0008] According to the hydraulic valve group leak-proof device, the outer side of the circular truncated cone block is provided with a rubber ring.

[0009] According to the hydraulic valve group leak-proof device, the outer side of the valve core head is fixedly connected with an O-shaped rubber ring, and the valve core head and the valve body are in sliding connection.

[0010] According to the hydraulic valve group leak-proof device, the upper side of the valve core head is fixedly connected with a first spring, and the other end of the first spring is fixedly connected with the lower side of the circular ring column body.

[0011] According to the hydraulic valve group leak-proof device, the upper side of the valve core head is fixedly connected with a valve core column, and the other end of the valve core column passes through the first spring and the circular ring column body and is fixedly connected with the circular truncated cone block.

[0012] According to the hydraulic valve group leak-proof device, the height of the circular ring column body is much smaller than the height of the valve body.

[0013] According to the hydraulic valve group leak-proof device, oil inlets are formed in the inner walls on both sides of the groove space in the valve body, and the bottom of the oil inlet is higher than the valve core head.

[0014] The above-mentioned scheme has the beneficial effects that:

[0015] 1. When the rubber O-shaped ring is damaged due to abrasion during frequent movement of the valve core, the hydraulic valve group can still seal the groove space and can continue to be used, without the need for workers to replace the hydraulic valve group, thereby greatly prolonging the service life of the hydraulic valve group.

[0016] 2. The threaded structure of the oil inlet further improves the sealing performance of the hydraulic valve group.

[0017] The additional aspects and advantages of the present application will be partially given in the following description, partially will become obvious from the following description, or will be understood through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0019] Figure 1 This is a schematic diagram of the overall main structure of a hydraulic valve group anti-leakage device of the utility model;

[0020] Figure 2 This is a schematic diagram of a partial valve body structure of a hydraulic valve group anti-leakage device of the utility model;

[0021] Figure 3 This is a structural schematic diagram of a partial valve body of a hydraulic valve group anti-leakage device according to the utility model from another perspective.

[0022] Legend:

[0023] 1. Hydraulic valve block; 2. Oil inlet; 3. Valve body; 4. Tank space; 5. Oil inlet tank; 6. Valve core head; 7. O-ring; 8. First spring; 9. Circular cylinder; 10. Valve core column; 11. Second spring; 12. Cone block. DETAILED DESCRIPTION

[0024] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0025] Reference Figure 1-3, a hydraulic valve group leakage prevention device, including a hydraulic valve block 1: an oil inlet 2 is opened on the outside of the hydraulic valve block 1, a valve body 3 is arranged on the upper side of the hydraulic valve block 1, a groove space 4 is arranged inside the valve body 3, the interior of the oil inlet 2 is threaded, two second springs 11 are arranged, a valve core head 6 is arranged inside the groove space 4, the outside of the valve core head 6 is fixedly connected with an O-type rubber ring 7, the valve core head 6 and the valve body 3 are slidingly connected, the upper side of the valve core head 6 is fixedly connected with a first spring 8, the other end of the first spring 8 is fixedly connected to the lower side of the annular cylinder 9, the height of the annular cylinder 9 is much smaller than the height of the valve body 3, and oil inlet grooves 5 are opened on the inner walls on both sides of the groove space 4 inside the valve body 3, and the bottom of the oil inlet groove 5 is higher than the valve core head 6. When the staff installs the one-way valve and the hydraulic valve block 1 properly, the oil flows into the valve body 3 of the one-way valve through the oil inlet 2 In the figure, there is a threaded setting of the oil inlet 2, which improves the sealing of the hydraulic valve group. When the O-type rubber ring 7 on the outside of the valve core head 6 is intact, a small amount of oil slowly enters the groove space 4, and the oil pushes the valve core head 6 to move. Because of the O-type rubber ring 7, the hydraulic valve group has good sealing. Until the O-type rubber ring 7 exceeds the bottom of the oil inlet groove 5, the oil flows into the upper side of the valve core head 6 and then flows into the annular cylinder 9. Then the valve core head 6 pushes the valve core column 10, and the valve core column 10 pushes the frustum block 12. The frustum stretches the second spring 11 to flow out, and then is compressed back by the action of the second spring 11. The O-type rubber ring 7 on the outside of the valve core head 6 and the rubber ring on the outside of the frustum greatly improve the sealing of the hydraulic valve group, and the oil will not leak easily, thereby greatly improving the service life of the hydraulic valve group and reducing the workload of the staff to frequently replace the hydraulic valve group.

[0026] The upper side of the valve core head 6 is fixedly connected with a valve core column 10, and the other end of the valve core column 10 passes through the first spring 8 and the annular cylinder 9 and is fixedly connected to the frustum block 12. The inside of the groove space 4 is provided with an annular cylinder 9, and the annular cylinder 9 and the valve body 3 are fixedly connected. The upper side of the annular cylinder 9 is fixedly connected with a second spring 11, and the other end of the second spring 11 is fixedly connected with a frustum block 12. The frustum block 12 and the valve body 3 are slidably connected. A rubber ring is provided on the outside of the frustum block 12. If the hydraulic valve group works frequently, the O-type rubber ring 7 will be seriously damaged due to the immersion of a large amount of oil and the frictional heat, so that it will no longer be sealing to the oil. When there is only a small amount of oil, it will also come out of the rubber ring. The oil enters the oil inlet groove 5 through the glue gap, but at this time there is a seal of the frustum block 12, which will not let a small amount of oil flow out casually. If there is no secondary seal of the frustum block 12, the hydraulic valve group will definitely be damaged and need to be replaced, which increases the workload of the staff. When using the O-type rubber ring 7 for the valve core head 6 and the frustum block 12, because the frustum block 12 is on the upper side, it is rarely soaked in water and is only damaged by friction heat. Its durability is better than the O-type rubber pad of the valve core head 6, which is sufficient for secondary protection. Even when the O-type rubber ring 7 on the outside of the valve core head 6 is damaged, the protection of the frustum block 12 will not require the staff to replace the hydraulic valve group, thereby extending the service life of the hydraulic valve group.

[0027] Working principle: When the staff installs the one-way valve to the hydraulic valve block 1, the oil flows into the valve body 3 through the oil inlet 2. At this time, the oil slowly enters the tank space 4. When there is enough oil, the oil pushes the valve core head 6, flows into the oil inlet tank 5, and then flows out from the oil inlet tank 5 to the upper side of the valve core head 6. The movement of the valve core head 6 brings about the movement of the valve core column 10, so that the frustum block 12 pulls the spring to make the oil flow out. Even if the O-ring 7 is used frequently and causes friction damage, the secondary sealing protection of the frustum block 12 will not damage the sealing performance, thereby greatly extending the service life of the hydraulic valve group.

[0028] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A hydraulic valve group anti-leakage device, characterized in that: The invention comprises a hydraulic valve block (1): an oil inlet (2) is provided on the outer side of the hydraulic valve block (1), a valve body (3) is provided on the upper side of the hydraulic valve block (1), a slot space (4) is provided inside the valve body (3), a circular cylinder (9) is provided inside the slot space (4), a valve core head (6) is provided inside the slot space (4), the circular cylinder (9) and the valve body (3) are fixedly connected, a second spring (11) is fixedly connected to the upper side of the circular cylinder (9), the other end of the second spring (11) is fixedly connected to a truncated cone block (12), and the truncated cone block (12) and the valve body (3) are slidably connected.

2. A hydraulic valve group anti-leakage device according to claim 1, characterized in that: The interior of the oil inlet (2) is threaded.

3. The anti-leakage device for a hydraulic valve group according to claim 1, characterized in that: Two second springs (11) are provided.

4. The anti-leakage device for a hydraulic valve group according to claim 1, characterized in that: A rubber ring is provided on the outer side of the truncated cone block (12).

5. The anti-leakage device for a hydraulic valve group according to claim 1, characterized in that: The outside of the valve core head (6) is fixedly connected with an O-type rubber ring (7), and the valve core head (6) and the valve body (3) are slidably connected.

6. The anti-leakage device for a hydraulic valve group according to claim 1, characterized in that: The upper side of the valve core head (6) is fixedly connected to a first spring (8), and the other end of the first spring (8) is fixedly connected to the lower side of the annular cylinder (9).

7. The anti-leakage device for a hydraulic valve group according to claim 1, characterized in that: A valve core column (10) is fixedly connected to the upper side of the valve core head (6), and the other end of the valve core column (10) passes through the first spring (8) and the annular cylinder (9) and is fixedly connected to the frustum block (12).

8. The anti-leakage device for a hydraulic valve group according to claim 1, characterized in that: The height of the annular cylinder (9) is much smaller than the height of the valve body (3).

9. The anti-leakage device for a hydraulic valve group according to claim 1, characterized in that: Oil inlet grooves (5) are provided on the inner walls of both sides of the tank space (4) inside the valve body (3), and the bottom of the oil inlet groove (5) is higher than the valve core head (6).

Images