Anti-falling device for oil suction valve

Abstract

The utility model discloses a kind of anti-falling devices of oil suction valve, belong to oil suction valve technical field, including pipeline, flexible joint, butterfly valve, first low-pressure round flange, flexible joint is connected with butterfly valve by being set on the second low-pressure round flange on flexible joint, first low-pressure round flange and the second low-pressure round flange are detachably connected by bolt and first nut, butterfly valve flange is arranged between first low-pressure round flange and the second low-pressure round flange, butterfly valve flange is set on bolt between first low-pressure round flange and the second low-pressure round flange and is fixed with the butterfly valve by second nut;In the utility model, when replacing flexible joint, only need to unfasten nut close to butterfly valve flange, flexible joint can be taken down, at this time, butterfly valve is fixed by second nut and butterfly valve flange, so that it is guaranteed that butterfly valve does not fall when replacing flexible joint, and then the efficiency of replacing flexible joint is improved, and oil tank oil leakage cannot be caused, cost is saved.

Description

Technical Field

[0001] This utility model relates to the field of oil suction valve technology, and specifically to an anti-drop device for an oil suction valve. Background Technology

[0002] Oil suction valve devices are widely used in various industries, especially in the hydraulic industry. Every hydraulic system requires a butterfly valve, which is used in combination with a flexible joint. The butterfly valve's function is to cut off and open the valve, while the flexible joint compensates for pump vibration. Because the flexible joint is a rubber consumable, it needs to be replaced periodically. Traditionally, the butterfly valve and flexible joint are directly connected. This has a drawback: when the flexible joint needs to be replaced, the butterfly valve may fall off along with it, causing oil leakage from the tank.

[0003] To address the aforementioned problems, this utility model provides an anti-fall device for oil suction valves, thereby solving the issue of low replacement efficiency of flexible joints in conventional oil suction valves. Utility Model Content

[0004] To address the aforementioned problems, this utility model provides an anti-drop device for oil suction valves, thereby improving the efficiency of replacing flexible joints.

[0005] To achieve the above objectives, this utility model provides the following solution: An anti-drop device for an oil suction valve includes a pipe for communicating with an oil tank, a butterfly valve disposed on the pipe, and a flexible joint communicating with the pipe. The butterfly valve is connected to the pipe via a first low-pressure circular flange disposed on the pipe. The flexible joint includes a flexible joint body and a second low-pressure circular flange and a third low-pressure circular flange disposed at both ends of the flexible joint body. The second low-pressure circular flange is connected to the butterfly valve. The first low-pressure circular flange and the second low-pressure circular flange are detachably connected by bolts and a first nut. A butterfly valve flange is disposed between the first low-pressure circular flange and the second low-pressure circular flange. The butterfly valve flange is disposed on the bolt between the first low-pressure circular flange and the second low-pressure circular flange and is fixed to the butterfly valve by a second nut.

[0006] Preferably, the third low-pressure circular flange is used to connect with a fourth low-pressure circular flange disposed on the pipe to be connected, and the third low-pressure circular flange and the fourth low-pressure circular flange are detachably connected by the bolts and the first nut.

[0007] Preferably, the first low-pressure circular flange and the fourth low-pressure circular flange are the same size.

[0008] Preferably, the second low-pressure circular flange and the third low-pressure circular flange are the same size.

[0009] Preferably, the thickness of the first low-pressure circular flange is greater than the thickness of the second low-pressure circular flange.

[0010] Preferably, the thickness of the second nut is less than the thickness of the first nut.

[0011] Preferably, the pipeline is a seamless steel pipe.

[0012] Preferably, the flexible joint is a rubber flexible joint.

[0013] Preferably, the thickness of the butterfly valve flange is less than the thickness of the first low-pressure circular flange.

[0014] Preferably, a sealant is provided at the connection between the pipe and the oil tank.

[0015] The present invention achieves the following technical advantages over the prior art: In this invention, when replacing the flexible joint, simply loosen the nut near the butterfly valve flange to remove the flexible joint. At this time, the butterfly valve is fixed in place by the second nut and the butterfly valve flange, thus ensuring that the butterfly valve will not fall off when replacing the flexible joint, thereby improving the efficiency of replacing the flexible joint and preventing leakage of oil from the tank, thus saving costs. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of this utility model; Among them, 1. oil tank; 2. pipeline; 3. first low-pressure round flange; 4. butterfly valve; 5. second nut; 6. second low-pressure round flange; 7. first nut; 8. bolt; 9. fourth low-pressure round flange; 10. third low-pressure round flange; 11. flexible joint; 12. butterfly valve flange. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] This utility model provides an anti-fall device for oil suction valves, thereby improving the efficiency of replacing flexible joints.

[0020] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] refer to Figure 1 An anti-drop device for an oil suction valve includes a pipe 2 for communicating with an oil tank 1, a butterfly valve 4 disposed on the pipe 2, and a flexible joint 11 communicating with the pipe 2. The butterfly valve 4 is connected to the pipe 2 via a first low-pressure circular flange 3 disposed on the pipe 2. The flexible joint 11 includes a flexible joint body and a second low-pressure circular flange 6 and a third low-pressure circular flange 6 disposed at both ends of the flexible joint body. The second low-pressure circular flange 6 is connected to the butterfly valve 4. The first low-pressure circular flange 3 and the second low-pressure circular flange 6 are detachably connected by bolts 8 and a first nut 7. A butterfly valve flange 12 is provided between the first low-pressure round flange 3 and the second low-pressure round flange 6. The butterfly valve flange 12 is mounted on the bolt 8 between the first low-pressure round flange 3 and the second low-pressure round flange 6 and is fixed to the butterfly valve 4 by the second nut 5. In this utility model, when replacing the flexible joint 11, it is only necessary to unscrew the nut near the butterfly valve flange 12 to remove the flexible joint 11. At this time, the butterfly valve is fixed by the second nut 5 and the butterfly valve flange 12, thereby ensuring that the butterfly valve 4 will not fall off when replacing the flexible joint 11, thus improving the efficiency of replacing the flexible joint 11 and preventing leakage of oil from the oil tank 1, saving costs.

[0022] refer to Figure 1 The third low-pressure round flange 10 is used to connect with the fourth low-pressure round flange 9 installed on the pipe to be connected. The third low-pressure round flange 10 and the fourth low-pressure round flange 9 are detachably connected by bolts 8 and first nuts 7. The flexible joint 11 can be used to connect other pipes 2, and the third low-pressure round flange 10 and the fourth low-pressure round flange 9 can be easily and conveniently detachably connected to other pipes 2.

[0023] Furthermore, the first low-pressure circular flange 3 and the fourth low-pressure circular flange 9 have the same dimensions; the second low-pressure circular flange 6 and the third low-pressure circular flange 10 have the same dimensions; and the thickness of the first low-pressure circular flange 3 is greater than the thickness of the second low-pressure circular flange 6.

[0024] Furthermore, the thickness of the second nut 5 is less than that of the first nut 7. The second nut 5 is mainly used to lock the butterfly valve 4. The purpose of its thinner thickness than the first nut 7 is to facilitate rotation to fix the butterfly valve 4.

[0025] Furthermore, pipe 2 is a seamless steel pipe. Seamless steel pipes have high strength, excellent mechanical properties, and strong corrosion resistance, which can effectively improve the service life of the anti-drop device of the oil suction valve.

[0026] Furthermore, the flexible joint 11 is a rubber flexible joint 11.

[0027] Furthermore, the thickness of the butterfly valve flange 12 is less than that of the first low-pressure circular flange 3. While ensuring connection strength, reducing the flange thickness makes the overall structure lighter and also reduces the cost of the device.

[0028] Furthermore, sealant is installed at the connection between pipe 2 and oil tank 1 to prevent oil leakage.

[0029] It should be noted that, for those skilled in the art, it is obvious that this utility model is not limited to the details of the above exemplary embodiments, and that this utility model can be implemented in other specific forms without departing from the spirit or essential characteristics of this utility model. Therefore, the embodiments should be considered as exemplary and non-limiting in all respects, and the scope of this utility model is defined by the appended claims rather than the foregoing description. Therefore, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within the utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A device for preventing the oil suction valve from falling off, characterized in that, The device includes a pipe for communicating with an oil tank, a butterfly valve installed on the pipe, and a flexible joint communicating with the pipe. The butterfly valve is connected to the pipe via a first low-pressure circular flange installed on the pipe. The flexible joint includes a flexible joint body and a second low-pressure circular flange and a third low-pressure circular flange installed at both ends of the flexible joint body. The second low-pressure circular flange is connected to the butterfly valve. The first low-pressure circular flange and the second low-pressure circular flange are detachably connected by bolts and a first nut. A butterfly valve flange is installed between the first low-pressure circular flange and the second low-pressure circular flange. The butterfly valve flange is installed on the bolt between the first low-pressure circular flange and the second low-pressure circular flange and is fixed to the butterfly valve by a second nut.

2. The anti-fall device for the oil suction valve according to claim 1, characterized in that, The third low-pressure circular flange is used to connect with the fourth low-pressure circular flange installed on the pipe to be connected. The third low-pressure circular flange and the fourth low-pressure circular flange are detachably connected by the bolts and the first nut.

3. The anti-fall device for the oil suction valve according to claim 2, characterized in that, The first low-pressure circular flange and the fourth low-pressure circular flange are the same size.

4. The anti-fall device for the oil suction valve according to claim 3, characterized in that, The second low-pressure circular flange and the third low-pressure circular flange are the same size.

5. The anti-fall device for the oil suction valve according to claim 4, characterized in that, The thickness of the first low-pressure circular flange is greater than the thickness of the second low-pressure circular flange.

6. The anti-fall device for the oil suction valve according to claim 1, characterized in that, The thickness of the second nut is less than the thickness of the first nut.

7. The anti-fall device for the oil suction valve according to claim 1, characterized in that, The pipeline is a seamless steel pipe.

8. The anti-fall device for the oil suction valve according to claim 1, characterized in that, The flexible joint is a rubber flexible joint.

9. The anti-drop device for the oil suction valve according to claim 1, characterized in that, The thickness of the butterfly valve flange is less than the thickness of the first low-pressure round flange.

10. The anti-fall device for the oil suction valve according to claim 1, characterized in that, The connection between the pipeline and the oil tank is sealed with sealant.

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