Hydraulic valve with anti-explosion function

Abstract

The utility model relates to the technical field of hydraulic valves, and discloses a hydraulic valve with an explosion-proof function, which comprises a valve body, the top of the valve body is in threaded connection with a limit nut and an adjusting cylinder, the inner cavity of the adjusting cylinder is movably sleeved with a driving spring, the inner cavity of the valve body is movably sleeved with a driving seat, and the inner cavity of the valve body is in threaded connection with the driving seat. And a driving rod is fixedly assembled on the outer wall of the driving seat. According to the hydraulic valve with the explosion-proof function, the pressure relief pipe is arranged on the outer wall of the valve body, and the pressure relief spring is arranged in the inner cavity of the pressure relief pipe, so that the pressure relief spring is gradually compressed along with the increase of the pressure in the valve body, a pressure relief plate moves along the inner wall of the pressure relief pipe, and once the pressure in the valve body exceeds the supporting force of the pressure relief spring, the pressure relief plate is stopped; at the moment, the pressure relief plate can move out of the inner cavity of the pressure relief pipe, pressure relief is achieved, and the situation that traditional equipment is short of a pressure relief structure, and consequently the equipment is overhigh in pressure and explodes is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic valves, in particular to a hydraulic valve with an explosion-proof function. Background Art

[0002] A hydraulic valve is an automated component operated by pressurized oil. It is controlled by the pressure oil of a pressure regulating valve and is usually used in combination with an electromagnetic pressure regulating valve. It can be used to remotely control the on / off of the oil, gas, and water pipeline systems in a hydropower station.

[0003] When a traditional direct-acting hydraulic valve is in use, the hydraulic valve itself lacks a pressure relief structure. When hydraulic oil is continuously supplied to the inner cavity of the hydraulic valve, the internal pressure will continue to increase until the pressure threshold is reached, which can easily cause the hydraulic valve to burst due to excessive pressure. After the hydraulic valve bursts, the hydraulic oil leaks out, causing the external environment to be polluted. Utility Model Content

[0004] In view of the deficiencies in the prior art, the present invention provides a hydraulic valve with explosion-proof function, which has the advantages of automatic pressure relief and collection of hydraulic oil, and solves the problems raised by the above-mentioned background technology.

[0005] The utility model provides the following technical solution: a hydraulic valve with an explosion-proof function, comprising a valve body, the top of the valve body being threadedly connected to a limiting nut, the top of the valve body being threadedly connected to an adjusting cylinder, the inner cavity of the adjusting cylinder being movably sleeved with a driving spring, the inner cavity of the valve body being movably sleeved with a driving seat, the outer wall of the driving seat being fixedly equipped with a driving rod, the outer wall of the valve body being fixedly equipped with an oil outlet pipe, the outer wall of the valve body being fixedly equipped with an oil inlet pipe, the outer wall of the valve body being installed with a pressure relief pipe, the inner wall of the pressure relief pipe being fixedly equipped with a limiting rod, the outer wall of the limiting rod being movably sleeved with a pressure relief spring, the outer wall of the limiting rod being movably sleeved with a movable plate, the outer wall of the movable plate being fixedly equipped with a pressure relief plate, the outer wall of the valve body being installed with a closing box, the inner wall of the closing box being fixedly equipped with an arc plate, and the bottom of the closing box being threadedly connected with a collecting box.

[0006] As a preferred technical solution of the present invention: both ends of the outer wall of the driving spring are respectively connected to the outer wall of the driving seat and the inner wall of the adjusting cylinder, and the driving spring is made of high carbon steel.

[0007] As an optimal technical solution of the present invention: the two ends of the outer wall of the pressure relief spring are respectively connected to the inner wall of the pressure relief pipe and the outer wall of the movable plate, there are two limit rods, and the two limit rods are respectively installed on the inner wall of the pressure relief pipe.

[0008] As a preferred technical solution of the present invention: the outer wall diameter of the pressure relief plate matches the inner wall diameter of the pressure relief pipe, and a movable groove is provided on the inner wall of the pressure relief pipe.

[0009] As a preferred technical solution of the present invention: the outer wall of the pressure relief pipe corresponds to the outer wall of the arc plate, and the inner cavity of the pressure relief pipe is communicated with the inner cavity of the valve body.

[0010] As an optimal technical solution of the present invention: the outer wall diameter of the limit nut is larger than the outer wall diameter of the adjusting cylinder, the outer wall diameter of the driving rod matches the inner wall diameter of the valve body, and the spring coefficient of the pressure relief spring is larger than the spring coefficient of the adjusting cylinder.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. This explosion-proof hydraulic valve has a pressure relief pipe arranged on the outer wall of the valve body and a pressure relief spring arranged in the inner cavity of the pressure relief pipe. As the pressure inside the valve body increases, the pressure relief spring is gradually compressed, causing the pressure relief plate to move along the inner wall of the pressure relief pipe. Once the pressure inside the valve body exceeds the supporting force of the pressure relief spring, the pressure relief plate can be moved out of the inner cavity of the pressure relief pipe to release the pressure, avoiding the lack of pressure relief structure in traditional equipment, which leads to excessive pressure and bursting of the equipment.

[0013] 2. This explosion-proof hydraulic valve has a closing box arranged on the outer wall of the valve body and a collecting box arranged below the closing box. After the pressure relief pipe releases the pressure inside the valve body, the hydraulic oil in the inner cavity of the valve body will directly impact the curved plate. Under the obstruction of the curved plate, the hydraulic oil can flow downward along the outer wall of the curved plate, thereby completing the collection of the hydraulic oil under the action of the collecting box to prevent its leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the cross-sectional structure of the valve body of the utility model;

[0016] Figure 3 This is a schematic diagram of the oil inlet pipe structure of the utility model;

[0017] Figure 4 This is a schematic diagram of the closed box structure of the utility model;

[0018] Figure 5 This is a schematic diagram of the structure of the pressure relief pipe of the utility model.

[0019] In the figure: 1. Valve body; 2. Limit nut; 3. Adjusting cylinder; 4. Driving spring; 5. Driving seat; 6. Driving rod; 7. Oil outlet pipe; 8. Oil inlet pipe; 9. Pressure relief pipe; 10. Limit rod; 11. Pressure relief spring; 12. Moving plate; 13. Pressure relief plate; 14. Closing box; 15. Collecting box; 16. Arc plate. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] See also Figure 1 - Figure 5 A hydraulic valve with explosion-proof function includes a valve body 1, the top of the valve body 1 is threadedly connected to a limit nut 2, the top of the valve body 1 is threadedly connected to an adjusting cylinder 3, the inner cavity of the adjusting cylinder 3 is movably sleeved with a driving spring 4, the inner cavity of the valve body 1 is movably sleeved with a driving seat 5, the outer wall of the driving seat 5 is fixedly equipped with a driving rod 6, the outer wall of the valve body 1 is fixedly equipped with an oil outlet pipe 7, the outer wall of the valve body 1 is fixedly equipped with an oil inlet pipe 8, the outer wall of the valve body 1 is installed with a pressure relief pipe 9, the inner wall of the pressure relief pipe 9 is fixedly equipped with a limit rod 10, the outer wall of the limit rod 10 is movably sleeved with a pressure relief spring 11, the outer wall of the limit rod 10 is movably sleeved with a movable plate 12, the outer wall of the movable plate 12 is fixedly equipped with a pressure relief plate 13, the outer wall of the valve body 1 is installed with a closing box 14, the inner wall of the closing box 14 is fixedly equipped with an arc plate 16, and the bottom of the closing box 14 is threadedly connected with a collecting box 15.

[0022] In the above structure, through the drive rod 6 set in the inner cavity of the valve body 1, and the drive seat 5 and drive spring 4 installed on the outer wall of the drive rod 6, when the hydraulic oil enters the inner cavity of the valve body 1 from the oil inlet pipe 8, it will push the drive rod 6 upward, thereby compressing the drive spring 4. Only when the pressure of the hydraulic oil reaches a certain level, the compression degree of the drive spring 4 can ensure that the drive rod 6 moves upward, so that the outer wall of the drive rod 6 exceeds the oil outlet pipe 7, and then the hydraulic oil can flow outward along the inner cavity of the oil outlet pipe 7.

[0023] In a preferred embodiment, two ends of the outer wall of the driving spring 4 are respectively connected to the outer wall of the driving seat 5 and the inner wall of the adjusting cylinder 3 , and the driving spring 4 is made of high carbon steel.

[0024] In the above structure, by setting the adjusting cylinder 3 in the inner cavity of the adjusting cylinder 3, and the driving seat 5 and the driving rod 6 installed on the outer wall of the driving spring 4, the outer wall of the driving rod 6 will block the outer wall of the oil outlet pipe 7 under the drive of the adjusting cylinder 3, so that the hydraulic oil cannot flow. Only when the pressure of the hydraulic oil reaches a certain level and the driving rod 6 moves upward for a certain distance, the hydraulic oil can enter the inner cavity of the oil outlet pipe 7, so that the oil outlet pipe 7 and the oil inlet pipe 8 can be connected.

[0025] In a preferred embodiment, the two ends of the outer wall of the pressure relief spring 11 are respectively connected to the inner wall of the pressure relief pipe 9 and the outer wall of the movable plate 12 , there are two limit rods 10 , and the two limit rods 10 are respectively installed on the inner wall of the pressure relief pipe 9 .

[0026] In the above structure, by providing a pressure relief spring 11 on the outer wall of the limit rod 10, the movable plate 12 and the pressure relief plate 13 can stay in the inner cavity of the pressure relief pipe 9 under the support of the pressure relief spring 11. As the pressure in the inner cavity of the valve body 1 continues to increase, the pressure relief plate 13 continues to move in the inner cavity of the pressure relief pipe 9. Once the pressure value in the inner cavity of the valve body 1 exceeds the supporting force of the pressure relief spring 11, the pressure relief plate 13 will move out of the inner cavity of the pressure relief pipe 9, thereby achieving pressure relief in the inner cavity of the valve body 1.

[0027] In a preferred embodiment, the outer wall diameter of the pressure relief plate 13 matches the inner wall diameter of the pressure relief pipe 9 , and a movable groove is provided on the inner wall of the pressure relief pipe 9 .

[0028] In the above structure, through the pressure relief plate 13 set in the inner cavity of the pressure relief pipe 9, as the pressure in the inner cavity of the valve body 1 increases, the pressure relief plate 13 will continue to move in the inner cavity of the pressure relief pipe 9, but will not detach from the inner cavity of the pressure relief pipe 9. Once the pressure in the inner cavity of the valve body 1 is greater than the supporting force of the pressure relief plate 13, the pressure relief plate 13 will be broken through, thereby causing the pressure relief plate 13 to detach from the inner cavity of the pressure relief pipe 9.

[0029] In a preferred embodiment, the outer wall of the pressure relief pipe 9 corresponds to the outer wall of the arc-shaped plate 16 , and the inner cavity of the pressure relief pipe 9 is communicated with the inner cavity of the valve body 1 .

[0030] In the above structure, the curved plate 16 is arranged in the inner cavity of the closing box 14, and the curved plate 16 can play a blocking and buffering role for the hydraulic oil coming out of the inner cavity of the pressure relief pipe 9. When the hydraulic oil breaks through the inner cavity of the pressure relief pipe 9 with a large pressure, the curved plate 16 can play a certain buffering role.

[0031] In a preferred embodiment: the outer wall diameter of the limit nut 2 is larger than the outer wall diameter of the adjusting cylinder 3, the outer wall diameter of the driving rod 6 matches the inner wall diameter of the valve body 1, and the spring coefficient of the pressure relief spring 11 is larger than the spring coefficient of the adjusting cylinder 3.

[0032] In the above structure, the position of the adjusting cylinder 3 is adjusted by rotating the adjusting cylinder 3 through the limit nut 2 set on the top of the valve body 1 and the adjusting cylinder 3 set on the top of the valve body 1, thereby adjusting the compression of the driving spring 4 by the adjusting cylinder 3, so that the stroke of the driving spring 4 can be controlled, thereby better providing power to the driving rod 6, and locking the position of the adjusting cylinder 3 under the action of the limit nut 2 on the top of the valve body 1.

[0033] Working principle: When the above-mentioned device is in use, hydraulic oil is introduced into the inner cavity of the valve body 1 through the oil inlet pipe 8, so that the pressure in the inner cavity of the valve body 1 increases, thereby causing the driving rod 6 to retract into the inner cavity of the valve body 1 under the action of pressure. At this time, the driving spring 4 is compressed, causing the driving rod 6 to move upward until the outer wall of the driving rod 6 moves upward and is offset from the position of the oil outlet pipe 7. At this time, the inner cavities of the oil outlet pipe 7 and the oil inlet pipe 8 are connected, and hydraulic oil can continue to pass through. In this process, the pressure relief plate 13 will also be squeezed by the hydraulic oil, and the oil inlet pipe 8 will be opened. When pressure is continuously supplied to the inner cavity of the valve body 1, the pressure relief spring 11 will be continuously compressed, and the pressure relief plate 13 will move toward the outside of the pressure relief pipe 9. Once the pressure relief spring 11 is compressed to the extreme, the outer wall of the pressure relief plate 13 will detach from the inner cavity of the pressure relief pipe 9, thereby releasing the pressure in the inner cavity of the pressure relief pipe 9. Subsequently, the pressure in the inner cavity of the valve body 1 will be released outward along the pressure relief pipe 9. The hydraulic oil passes through the inner cavity of the pressure relief pipe 9 and hits the outer wall of the arc plate 16, and flows downward along the outer wall of the arc plate 16 and enters the inner cavity of the collection box 15, thereby collecting the hydraulic oil.

[0034] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hydraulic valve with explosion-proof function, comprising a valve body (1), characterized in that: The top of the valve body (1) is threadedly connected to a limit nut (2), the top of the valve body (1) is threadedly connected to an adjusting cylinder (3), the inner cavity of the adjusting cylinder (3) is movably sleeved with a driving spring (4), the inner cavity of the valve body (1) is movably sleeved with a driving seat (5), the outer wall of the driving seat (5) is fixedly equipped with a driving rod (6), the outer wall of the valve body (1) is fixedly equipped with an oil outlet pipe (7), the outer wall of the valve body (1) is fixedly equipped with an oil inlet pipe (8), and the outer wall of the valve body (1) is installed with a pressure relief pipe (9), the inner wall of the pressure relief pipe (9) is fixedly equipped with a limit rod (10), the outer wall of the limit rod (10) is movably sleeved with a pressure relief spring (11), the outer wall of the limit rod (10) is movably sleeved with a movable plate (12), the outer wall of the movable plate (12) is fixedly equipped with a pressure relief plate (13), the outer wall of the valve body (1) is installed with a closing box (14), the inner wall of the closing box (14) is fixedly equipped with an arc plate (16), and the bottom of the closing box (14) is threadedly connected to a collecting box (15).

2. The explosion-proof hydraulic valve according to claim 1, characterized in that: The two ends of the outer wall of the driving spring (4) are respectively connected to the outer wall of the driving seat (5) and the inner wall of the regulating cylinder (3), and the driving spring (4) is made of high-carbon steel.

3. The explosion-proof hydraulic valve according to claim 2, characterized in that: The two ends of the outer wall of the pressure relief spring (11) are respectively connected to the inner wall of the pressure relief pipe (9) and the outer wall of the movable plate (12). There are two limit rods (10), and the two limit rods (10) are respectively installed on the inner wall of the pressure relief pipe (9).

4. The explosion-proof hydraulic valve according to claim 1, characterized in that: The outer wall diameter of the pressure relief plate (13) matches the inner wall diameter of the pressure relief pipe (9), and a movable groove is provided on the inner wall of the pressure relief pipe (9).

5. The explosion-proof hydraulic valve according to claim 4, characterized in that: The outer wall of the pressure relief pipe (9) corresponds to the outer wall of the arc-shaped plate (16), and the inner cavity of the pressure relief pipe (9) is in communication with the inner cavity of the valve body (1).

6. The explosion-proof hydraulic valve according to claim 1, characterized in that: The outer wall diameter of the limit nut (2) is larger than the outer wall diameter of the regulating cylinder (3), the outer wall diameter of the driving rod (6) matches the inner wall diameter of the valve body (1), and the spring coefficient of the pressure relief spring (11) is larger than the spring coefficient of the regulating cylinder (3).

Images