An adjustable controllable explosion-proof valve device

Abstract

The utility model relates to the technical field of explosion -proof valve, disclose a kind of adjustable controllable explosion -proof valve device, comprising: valve body, valve body includes valve cylinder, and valve cylinder is coaxially provided with pedestal;Regulation unit, regulation unit includes control group, action group;Action group includes the valve piece coaxially arranged in valve cylinder, and control group is used to control the distance between valve piece and pedestal end face;When valve piece is pressed in pedestal end face, oil passage is blocked, and power is broken down.The utility model sets up control group cooperation action group, and staff can pull drawstring and carry out the flow cutting operation of explosion -proof valve;Drawstring is used to bypass the space limit of scene, and the implementation of scheme is facilitated;By setting adjusting bolt, the initial distance of valve piece and pedestal is adjustable, to adjust explosion pressure and adapt to different hydraulic equipment;By setting valve piece and pedestal cooperation, the flow thrust of suddenly increased hydraulic oil when hydraulic pipeline burst pipe is used, the automatic flow cutting of quick response is realized, manual operation is not needed, and loss is avoided to expand.

Description

Technical Field

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

[0002] Hydraulic explosion-proof valves are devices specifically designed to protect hydraulic systems and are widely used in lifting equipment such as elevators and forklifts. Their main function is to monitor and regulate system pressure, preventing explosions or leaks under high pressure or high temperature conditions. When the hydraulic system pressure exceeds a set value, the valve automatically opens to release excess pressure, ensuring safe equipment operation; when a hydraulic pipe ruptures, causing a sudden pressure drop, the valve automatically closes, cutting off the oil circuit and preventing the equipment from falling.

[0003] The rising or falling motion of equipment such as hydraulic lifting platforms may cause safety hazards and property damage due to aging of some hydraulic pipes, pipe bursts, or jamming and loss of control of hydraulic valve groups. Furthermore, because the lifting pressure of each lifting device varies, ordinary explosion-proof valves, which are quantitative and pressure-controlled explosion-proof pipe devices, cannot properly match the hydraulic pressure of the lifting device during rising or falling, easily leading to pipe burst protection failure. In addition, some working scenarios lack or have no power supply, so the opening and stopping of explosion-proof valves must be done manually. However, due to space constraints, manual operation is inconvenient, making explosion-proof operations difficult to implement. Utility Model Content

[0004] The purpose of this utility model is to provide an adjustable and controllable explosion-proof valve device, which solves the problems of existing explosion-proof valves having non-adjustable explosion-proof pressure and being inconvenient to implement in special scenarios.

[0005] This utility model is achieved through the following technical solution: an adjustable and controllable explosion-proof valve device, comprising: The valve body includes a valve cylinder, on which a base is coaxially disposed, and hydraulic oil flows in an oil passage axially disposed on the base. The control unit includes a control group and an action group; the action group is controlled by the control group, and the action group includes a valve plate coaxially disposed in the valve cylinder; the control group is used to control the distance between the valve plate and the end face of the base; when the valve plate is pressed against the end face of the base, it blocks the oil passage and realizes power interruption.

[0006] To better realize this utility model, the actuation group further includes a cam group, a camshaft, a pressure spring, a pressure shaft, and a return spring. The valve plate is slidably connected to the pressure shaft, and the pressure shaft is slidably connected to the base. The pressure spring and the return spring are both sleeved on the pressure shaft and are distributed on both sides of the valve plate. A mounting seat is installed on the valve cylinder. The camshaft is rotatably connected to the mounting seat and perpendicular to the axis of the valve cylinder. The camshaft is drively connected to the control group. The cam group is installed on the camshaft and cooperates with the end of the pressure shaft.

[0007] To better realize this utility model, the control group further includes a pull cable adjustment plate and a pull rope. The pull cable adjustment plate is installed on the camshaft. A limit groove is provided on the arc edge of the pull cable adjustment plate, and a connecting hole is provided at the end. One end of the pull rope is fixed to the connecting hole and laid in the limit groove.

[0008] To better realize this utility model, the control group further includes a positioning plate, which is mounted on the mounting base. The positioning plate is provided with a limit hole, and the pull rope is led out from the limit groove and passes through the limit hole.

[0009] To better realize this utility model, the positioning plate is further provided with an adjusting bolt threaded on it. The adjusting bolt abuts against the pull wire adjusting plate and is used to adjust the initial deflection position of the cam assembly.

[0010] To better realize this utility model, the control group further includes a torque amplification device, and the pull rope is connected to the output end of the torque amplification device.

[0011] To better realize this utility model, sealing gaskets are provided at both ends of the valve cylinder and a sealing ring is provided in the middle. The sealing ring cooperates with the base to achieve a seal. The sealing gasket is used to cooperate with the hydraulic pipeline to achieve a connection seal.

[0012] Compared with the prior art, this utility model has the following advantages and beneficial effects: (1) By setting up a control group in conjunction with an action group, the staff can pull the rope to perform the flow blocking operation of the explosion-proof valve; by using the rope to bypass the spatial limitations of the scene, the implementation of the plan is convenient and the manual operation is convenient; (2) By setting an adjusting bolt, the initial distance between the valve plate and the base can be adjusted; that is, the thrust required for the valve plate to close the base by hydraulic oil can be controlled, thereby realizing the adjustment of explosion-proof pressure; thus adapting to different hydraulic equipment; (3) By setting a valve plate to cooperate with the base, this utility model utilizes the thrust of the hydraulic oil flow that increases rapidly when the hydraulic pipeline bursts to achieve a rapid response and automatic shut-off, without the need for manual operation, thus avoiding the expansion of losses. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0014] Figure 2 This is a top view of the overall structure of this utility model.

[0015] Figure 3 This is a frontal sectional view of the overall structure of this utility model.

[0016] Figure 4 This is a right-side sectional view of the overall structure of this utility model.

[0017] Wherein: 101-valve cylinder; 102-positioning plate; 103-pull cable adjusting plate; 104-cam assembly; 105-camshaft; 106-valve plate; 107-mounting seat; 108-adjusting bolt; 109-sealing gasket; 110-downward pressure spring; 111-downward pressure shaft; 112-sealing ring; 113-reset spring; 114-base. 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] Example 1:

[0020] This embodiment provides an adjustable and controllable explosion-proof valve device, specifically as follows: Figures 1-4 As shown, it includes: The valve body includes a valve cylinder 101, on which a base 114 is coaxially disposed, and hydraulic oil flows in an oil passage axially disposed on the base 114; The control unit includes a control group and an action group; the action group is controlled by the control group, and the action group includes a valve plate 106 coaxially disposed in the valve cylinder 101. The control group is used to control the distance between the valve plate 106 and the end face of the base 114; when the valve plate 106 is pressed against the end face of the base 114, it blocks the oil passage and realizes power interruption.

[0021] During normal use, hydraulic oil flows from end A to end B, at which point the lifting device begins to lift the item; when the hydraulic oil flows back from end B to end A, the lifting device begins to descend.

[0022] When a hydraulic line at end A bursts, the lifting equipment begins to descend rapidly. At this time, the pressure in the line drops sharply, causing the hydraulic oil to flow rapidly. Simultaneously, this pushes valve plate 106 into the oil passage on the base 114, blocking the oil passage and cutting off the hydraulic oil flow, functioning similarly to a check valve. This prevents the lifting equipment from falling rapidly, keeping it suspended. After the line is repaired, the equipment is started, pumping hydraulic oil from end A to end B. This causes valve plate 106 to move upwards by 0.5-2 mm under thrust. Afterward, the oil passage on the base 114 reopens, restoring normal operation.

[0023] When a minor rupture occurs in the hydraulic pipeline or the valve assembly becomes stuck, causing the equipment to slowly and continuously descend in an uncontrolled state, the hydraulic oil flows in the valve cylinder 101 but cannot push the valve plate 106 to block the base 114. Therefore, the control group is manually driven, and the control group drives the action group. The valve plate 106 in the action group will approach and block the base 114 until the repair is completed and normal use can continue.

[0024] Example 2:

[0025] This embodiment further extends the above embodiment, specifically as follows: Figure 3 , Figure 4 As shown, the action group also includes a cam group 104, a camshaft 105, a pressure spring 110, a pressure shaft 111, and a return spring 113. The valve plate 106 is slidably connected to the pressure shaft 111, and the pressure shaft 111 is slidably connected to the base 114. The pressure spring 110 and the return spring 113 are both sleeved on the pressure shaft 111, and the pressure spring 110 and the return spring 113 are distributed on both sides of the valve plate 106. The valve cylinder 101 is threadedly connected to a mounting seat 107. The camshaft 105 is rotatably connected to the mounting seat 107 and is perpendicular to the axis of the valve cylinder 101. The camshaft 105 is drive-connected to the control group. The cam group 104 is bolted to the camshaft 105, and the cam group 104 is engaged with the end of the pressure shaft 111.

[0026] When the drive control group is activated, it drives the camshaft 105 to rotate. The camshaft 105 synchronously drives the cam assembly 104 to rotate. As the cam assembly 104 rotates, its diameter gradually changes, thus pushing the lower pressure shaft 111. The lower pressure shaft 111 begins to press down, and the return spring 113 begins to compress. This continues until the valve plate 106 contacts the base 114 and blocks it. At this point, further pressing down the lower pressure shaft 111 compresses the lower pressure spring 110. Because the elastic modulus of the lower pressure spring 110 is higher than that of the return spring 113, once the valve plate 106 contacts the base 114, the lower pressure spring 110 provides greater rotational resistance to the cam assembly 104, preventing excessive rotation and ensuring that the cam assembly 104 can press down the lower pressure shaft 111 and maintain the valve plate 106 blocking the base 114.

[0027] Furthermore, such as Figure 1 , Figure 2 As shown, the control group includes a pull cable adjustment plate 103 and a pull rope. The pull cable adjustment plate 103 is mounted on the camshaft 105. A limit groove is provided on the arc edge of the pull cable adjustment plate 103, and a connecting hole is provided at the end. The limit groove is to prevent the pull rope from deviating. One end of the pull rope is fixed to the connecting hole and laid in the limit groove.

[0028] When the camshaft 105 needs to be rotated, simply pull the pull rope. The pull rope will then pull the pull cable adjustment plate 103, causing the pull cable adjustment plate 103 to start rotating, which in turn drives the camshaft 105 to rotate.

[0029] Furthermore, such as Figure 1 As shown, the control group also includes a positioning plate 102, which is threadedly connected to the mounting base 107. The positioning plate 102 is provided with a limit hole, and the pull rope is led out from the limit groove and passes through the limit hole to further prevent the pull from deviating.

[0030] Furthermore, such as Figure 2 As shown, an adjusting bolt 108 is threaded onto the positioning plate 102. The adjusting bolt 108 abuts against the pull-wire adjusting plate 103 and is used to adjust the initial deflection position of the cam assembly 104. By rotating the adjusting bolt 108, the relative position between the adjusting bolt 108 and the positioning plate 102 changes, thus changing the initial deflection angle of the pull-wire adjusting plate 103. This allows the cam assembly 104 to maintain deflection, thereby controlling the initial distance between the valve plate 106 and the base 114. The smaller the distance, the smaller the thrust required for the valve plate 106 to close the base 114 under the pressure of hydraulic oil. By setting a threshold in this way, it is possible to determine whether to directly cut off the oil circuit based on the severity of the hydraulic pipeline leakage.

[0031] Furthermore, the control group also includes a torque amplification device, and the pull rope is connected to the output end of the torque amplification device. The torque amplification device can be made using a lever principle similar to a bicycle brake lever; it can also be made using a multi-pulley system, without specific limitations here; by setting up the torque amplification device, it is easier and faster for a person to pull the pull rope manually.

[0032] The other parts of this embodiment are the same as those in the above embodiments, and will not be described again.

[0033] Example 3:

[0034] This embodiment further extends the above embodiment, specifically as follows: Figure 3 As shown, sealing gaskets 109 are provided at both ends of the valve cylinder 101, and a sealing ring 112 is provided in the middle. The sealing ring 112 cooperates with the base 114 to achieve sealing. The sealing gaskets 109 are used to cooperate with the hydraulic pipeline to achieve connection sealing.

[0035] The other parts of this embodiment are the same as those in the above embodiments, and will not be described again.

[0036] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any modifications or equivalent changes made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. An adjustable and controllable explosion-proof valve device, characterized in that, include: The valve body includes a valve cylinder (101), and a base (114) is coaxially disposed on the valve cylinder (101). Hydraulic oil flows in an oil passage axially disposed on the base (114). The control unit includes a control group and an action group; the action group is controlled by the control group, and the action group includes a valve plate (106) coaxially disposed in the valve cylinder (101). The control group is used to control the distance between the valve plate (106) and the end face of the base (114); when the valve plate (106) is pressed against the end face of the base (114), it blocks the oil passage and realizes power blocking. The action group also includes a cam group (104), a camshaft (105), a pressure spring (110), a pressure shaft (111), and a return spring (113). The valve plate (106) is slidably connected to the pressure shaft (111), and the pressure shaft (111) is slidably connected to the base (114). The pressure spring (110) and the return spring (113) are both sleeved on the pressure shaft (111), and the pressure spring (110) and the return spring (113) are distributed on both sides of the valve plate (106). A mounting seat (107) is installed on the valve cylinder (101). The camshaft (105) is rotatably connected to the mounting seat (107) and perpendicular to the axis of the valve cylinder (101). The camshaft (105) is drive-connected to the control group. The cam group (104) is installed on the camshaft (105), and the cam group (104) is engaged with the end of the pressure shaft (111).

2. The adjustable and controllable explosion-proof valve device according to claim 1, characterized in that: The control group includes a pull wire adjustment plate (103) and a pull rope. The pull wire adjustment plate (103) is installed on the camshaft (105). A limit groove is provided on the arc edge of the pull wire adjustment plate (103), and a connection hole is provided at the end. One end of the pull rope is fixed to the connection hole and laid in the limit groove.

3. The adjustable and controllable explosion-proof valve device according to claim 2, characterized in that: The control group also includes a positioning plate (102), which is mounted on the mounting base (107). The positioning plate (102) is provided with a limit hole, and the pull rope is led out from the limit groove and passes through the limit hole.

4. The adjustable and controllable explosion-proof valve device according to claim 3, characterized in that: The positioning plate (102) is threaded with an adjusting bolt (108), which abuts against the pull wire adjusting plate (103) to adjust the initial deflection position of the cam group (104).

5. An adjustable and controllable explosion-proof valve device according to any one of claims 2-4, characterized in that: The control group also includes a torque amplification device, and the pull rope is connected to the output end of the torque amplification device.

6. An adjustable and controllable explosion-proof valve device according to any one of claims 1-4, characterized in that: The valve cylinder (101) is provided with sealing gaskets (109) at both ends and a sealing ring (112) in the middle. The sealing ring (112) cooperates with the base (114) to achieve sealing. The sealing gasket (109) is used to cooperate with the hydraulic pipeline to achieve connection sealing.

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