An explosion-proof valve

Abstract

The utility model belongs to valve technical field, specifically disclose a kind of explosion-proof valve, including valve body, the both ends of valve body are connected with pipeline and hydraulic cylinder by screw thread, the both ends inner wall of valve body is provided with first gasket and second gasket, first gasket is arranged between valve body and pipeline, second gasket is arranged between valve body and hydraulic cylinder, the inside fixed mounting of valve body has connecting piece;Adjusting assembly, adjusting assembly is used to assist staff to adjust explosion-proof valve, adjusting assembly is connected with conical sealing plate. By setting adjusting assembly, when conical sealing plate plugging valve body in pipeline burst state, it is convenient for staff to select to discharge hydraulic oil in the inside of hydraulic cylinder according to the actual situation of equipment, let hydraulic cylinder retract and drive equipment slowly fall to safe position, or lock hydraulic cylinder, let hydraulic cylinder support and fix equipment in this position and no longer displace, expand the application range of explosion-proof valve.

Description

Technical Field

[0001] This utility model belongs to the field of valve technology, and specifically relates to an explosion-proof valve. Background Technology

[0002] Valves are pipeline accessories used to open and close pipelines, control flow direction, and regulate and control the parameters (temperature, pressure, and flow rate) of the conveyed medium. Explosion-proof valves are mainly used in hydraulic equipment without mechanical locking systems, such as large mechanical stages, lifts, elevators, and automotive inspection and repair beams, primarily serving a protective function to prevent safety accidents. They are a type of locking measure in hydraulic systems.

[0003] Existing explosion-proof valves used in hydraulic systems are divided into load-holding type and load-slow-descent type. The load-holding type can immediately cut off the oil circuit when a pipeline bursts, preventing the load from falling uncontrollably or damaging the equipment. The load-slow-descent type can immediately cut off the oil circuit when a pipeline bursts and gradually release pressure through internal orifices, allowing the equipment to slowly descend to a safe position. The two types of explosion-proof valves are suitable for different scenarios. However, in actual situations, it is often necessary to choose between locking the equipment or allowing it to descend slowly, depending on the equipment's condition at the time. Existing explosion-proof valves cannot be adjusted according to actual conditions, affecting their applicability. Therefore, designing an explosion-proof valve to address this problem is a current issue that needs to be resolved. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing an explosion-proof valve.

[0005] To achieve the above objectives, this utility model provides an explosion-proof valve, including a valve body. Pipes and hydraulic cylinders are threadedly connected to both ends of the valve body. A first sealing gasket and a second sealing gasket are provided on the inner walls of both ends of the valve body. The first sealing gasket is positioned between the valve body and the pipe, and the second sealing gasket is positioned between the valve body and the hydraulic cylinder. A connector is fixedly installed inside the valve body. A valve stem is fixedly connected to one side of the connector. A nut is threadedly connected to the outer wall of the valve stem, and a conical sealing plate is slidably connected to the outer wall of the valve stem. An adjustment assembly is also provided, which assists operators in adjusting the explosion-proof valve. The adjustment assembly is connected to the conical sealing plate.

[0006] In the above technical solution, a spring is further provided on the outer wall of the valve stem, and the spring is disposed between the connector and the conical sealing plate.

[0007] In the above technical solution, the adjusting component further includes a receiving groove and a drain hole formed inside the conical sealing plate, with one end of the drain hole communicating with the receiving groove.

[0008] In the above technical solution, a connecting rod is further inserted inside the receiving groove and the drain hole, and a connecting ring is snapped onto the outer wall of one end of the connecting rod.

[0009] In the above technical solution, the connecting ring is further inserted into the inside of the valve body and abuts against the end of the pipe.

[0010] In the above technical solution, two sealing elements are fixedly connected to the outer wall of the connecting rod, the contour of the connection between the connecting rod and the sealing elements is adapted to the drain hole, and a receiving element is fixedly connected to the end of the connecting rod and one of the sealing elements.

[0011] Compared with the prior art, the present invention has the following beneficial effects: By setting up adjustment components, in the event of a pipeline rupture, when the conical sealing plate blocks the valve body, it is convenient for operators to choose to discharge the hydraulic oil inside the hydraulic cylinder according to the actual situation of the equipment, allowing the hydraulic cylinder to retract and drive the equipment to slowly fall to a safe position, or to lock the hydraulic cylinder, allowing the hydraulic cylinder to support and fix the equipment in this position so that it will no longer move, thus expanding the application range of the explosion-proof valve. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure proposed in this utility model; Figure 2 This is a schematic diagram of the structure of the explosion-proof valve and hydraulic cylinder proposed in this utility model. Figure 3 This is a cross-sectional view of the explosion-proof valve in the open state proposed in this utility model. Figure 4 This is a cross-sectional view of the explosion-proof valve in the closed state proposed in this utility model.

[0013] In the diagram: 1. Valve body; 2. Pipeline; 3. Hydraulic cylinder; 4. First sealing gasket; 5. Second sealing gasket; 6. Connecting piece; 7. Valve stem; 8. Nut; 9. Conical sealing plate; 10. Spring; 11. Receiving groove; 12. Drain hole; 13. Connecting rod; 14. Connecting ring; 15. Sealing element; 16. Receiving piece. Detailed Implementation

[0014] To better understand the above-mentioned objectives, features and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0015] like Figures 1 to 4An explosion-proof valve is shown, comprising a valve body 1, with pipes 2 and hydraulic cylinders 3 connected to both ends of the valve body 1 by threads. A first sealing gasket 4 and a second sealing gasket 5 are provided on the inner walls of both ends of the valve body 1. The first sealing gasket 4 is located between the valve body 1 and the pipes 2, and the second sealing gasket 5 is located between the valve body 1 and the hydraulic cylinder 3. A connector 6 is fixedly installed inside the valve body 1. A valve stem 7 is fixedly connected to one side of the connector 6. A nut 8 is threadedly connected to the outer wall of the valve stem 7. A conical sealing plate 9 is slidably connected to the outer wall of the valve stem 7. A spring 10 is sleeved on the outer wall of the valve stem 7, and the spring 10 is located between the connector 6 and the conical sealing plate 9. An adjustment assembly is also included, which assists the operator in adjusting the explosion-proof valve and is connected to the conical sealing plate 9.

[0016] like Figures 1 to 4 As shown, the adjustment assembly includes a receiving groove 11 and a drain hole 12 formed inside the conical sealing plate 9. One end of the drain hole 12 is connected to the receiving groove 11. Through the setting of the receiving groove 11, when the pipeline 2 bursts and the hydraulic oil inside the hydraulic cylinder 3 flows back into the valve body 1, the receiving groove 11 allows the conical sealing plate 9 to bear more pressure from the hydraulic oil, allowing the hydraulic oil to move the conical sealing plate 9 more quickly through the groove 11 to seal the valve body 1 and block the hydraulic oil. A connecting rod 13 is inserted inside the receiving groove 11 and the drain hole 12. A connecting ring 14 is snapped onto the outer wall of one end of the connecting rod 13. The connecting ring 14 is inserted into the inside of the valve body 1 and abuts against the end of the pipeline 2. Two sealing elements 15 are fixedly connected to the outer wall of the connecting rod 13. The contour of the connection between the connecting rod 13 and the sealing element 15 is adapted to the drain hole 12. A receiving element 16 is fixedly connected to the end of the connecting rod 13 and one of the sealing elements 15.

[0017] Working principle: The explosion-proof valve is connected to the pipeline 2 and the hydraulic cylinder 3 at both ends respectively. When the hydraulic cylinder 3 extends, if the pipeline 2 bursts, the hydraulic cylinder 3 will squeeze out the hydraulic oil under the pressure of the equipment, so that the hydraulic oil is quickly discharged into the interior of the valve body 1. This pushes the conical sealing plate 9 on the valve stem 7 to move, allowing the conical sealing plate 9 to slide along the outer wall of the valve stem 7 and compress the spring 10 to contract until the conical sealing plate 9 seals the interior of the valve body 1 and stops. At this time, the conical sealing plate 9 works with the valve body 1 to block the hydraulic oil, preventing the hydraulic oil from being discharged quickly, which would cause the hydraulic cylinder 3 to retract too quickly, damaging the equipment or causing a safety accident. Furthermore, when the conical sealing plate 9 is pushed to cooperate with the valve body 1 to block the hydraulic oil, the conical sealing plate 9 will slide relative to the connecting rod 13 when pushed, causing the conical sealing plate 9 to move from the part of the connecting rod 13 connected to the seal 15 to the part of the connecting rod 13 not connected to the seal 15. At this time, the drain hole 12 on the conical sealing plate 9 loses the seal of the seal 15, exposing a gap for the hydraulic oil to drain. The hydraulic oil blocked by the conical sealing plate 9 and the valve body 1 can be gradually discharged through the gap exposed by the drain hole 12, so that the hydraulic oil inside the hydraulic cylinder 3 can be gradually discharged, allowing the hydraulic cylinder 3 to gradually... The retraction mechanism slowly lowers the equipment to a safe position, allowing workers to drain the hydraulic oil from inside the hydraulic cylinder 3. After the hydraulic cylinder 3 lowers the equipment to a safe position, the burst pipe 2 can be replaced. It is important to note that when the hydraulic oil is discharged through the gap between the drain hole 12 and the exposed part of the connecting rod 13, the hydraulic oil will spray onto another seal 15 of the connecting rod 13. This seal 15 will block the sprayed hydraulic oil, buffering the pressure of the hydraulic oil spray and preventing the hydraulic oil from being sprayed too high, which would cause the hydraulic oil to spray too far and affect the surrounding workers and environment. Furthermore, when the operator needs to lock the hydraulic cylinder 3 to hold the equipment in this position, the operator can remove the burst connector of pipe 2 from inside the valve body 1. This stops the connector of pipe 2 from blocking and limiting the connecting ring 14, allowing the hydraulic oil discharged through the drain hole 12 and the gap between the connecting rod 13 to spray onto the seal 15. This creates an impact force that pushes the connecting rod 13, causing the connecting ring 14 to move in the direction where pipe 2 is separated from the valve body 1. This continues until a seal 15 connected to the receiving part 16 is inserted into the drain hole 12, at which point the seal 15 on the connecting rod 13 is reinserted into the drain hole 12, allowing the connecting rod 13 to work with the seal 15 to seal the drain hole 12, preventing the drain hole 12 from discharging hydraulic oil. Locking hydraulic cylinder 3 keeps the equipment in this position, allowing operators to choose between draining the hydraulic oil inside cylinder 3 to retract and slowly lower the equipment to a safe position, or locking cylinder 3 to fix the equipment in this position and prevent further displacement, thus expanding the applicability of the explosion-proof valve. It should be noted that when operators replace the new pipe 2 and repressurize, the pressure at both ends of valve body 1 gradually balances. The conical sealing plate 9 will overcome the pressure in the direction of pipe 2 and the return force of spring 10 to reset, allowing valve body 1 to open the seal of conical sealing plate 9, reconnecting pipe 2 and hydraulic cylinder 3, and restoring pipe 2 and hydraulic cylinder 3 to normal operation.

[0018] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. An explosion-proof valve, comprising a valve body (1), characterized in that, The valve body (1) is connected to a pipe (2) and a hydraulic cylinder (3) by threads at both ends. The inner walls of the valve body (1) are provided with a first sealing gasket (4) and a second sealing gasket (5). The first sealing gasket (4) is located between the valve body (1) and the pipe (2), and the second sealing gasket (5) is located between the valve body (1) and the hydraulic cylinder (3). A connector (6) is fixedly installed inside the valve body (1). A valve stem (7) is fixedly connected to one side of the connector (6). A nut (8) is threadedly connected to the outer wall of the valve stem (7). A conical sealing plate (9) is slidably connected to the outer wall of the valve stem (7). An adjustment component is provided to assist the operator in adjusting the explosion-proof valve. The adjustment component is connected to the conical sealing plate (9).

2. The explosion-proof valve according to claim 1, characterized in that, A spring (10) is fitted onto the outer wall of the valve stem (7), and the spring (10) is disposed between the connector (6) and the conical sealing plate (9).

3. The explosion-proof valve according to claim 1, characterized in that, The adjustment assembly includes a receiving groove (11) and a drain hole (12) formed inside the conical sealing plate (9), one end of which is connected to the receiving groove (11).

4. The explosion-proof valve according to claim 3, characterized in that, A connecting rod (13) is inserted into the inside of the receiving groove (11) and the drain hole (12), and a connecting ring (14) is snapped onto the outer wall of one end of the connecting rod (13).

5. The explosion-proof valve according to claim 4, characterized in that, The connecting ring (14) is inserted into the inside of the valve body (1) and abuts against the end of the pipe (2).

6. The explosion-proof valve according to claim 4, characterized in that, Two sealing elements (15) are fixedly connected to the outer wall of the connecting rod (13). The contour of the connection between the connecting rod (13) and the sealing element (15) is adapted to the drain hole (12). A receiving element (16) is fixedly connected to the end of the connecting rod (13) and one of the sealing elements 15.

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