Elastic force adjusting structure of wafer check valve

Abstract

The utility model provides an elasticity adjusting structure of a wafer check valve, and relates to the technical field of wafer check valves, an elasticity adjusting mechanism is arranged in a valve body, the elasticity adjusting mechanism comprises a check plate, and the outer surface of the check plate is fixedly connected with two supporting plates. According to the elasticity adjusting structure of the wafer check valve, by arranging the elasticity adjusting mechanism, when elasticity of a device needs to be adjusted, a bolt blocking button is rotated and taken down, a screwdriver is used for being matched with a cross groove to rotate a bidirectional threaded rod, and two moving shafts move in opposite directions through rotation of the bidirectional threaded rod; the inclination angle of an ejector block is changed through movement of a moving shaft, the ejector block pushes a push plate to slide along the outer surface of a guide rod, the distance between the push plate and a baffle is changed, the compression state of a reset spring is changed, and therefore the purpose that the elastic force of the device can be adjusted without disassembling the device is achieved; operation is simple and convenient.

Description

Technical Field

[0001] The utility model relates to an elastic force regulating mechanism, in particular to an elastic force regulating structure of a clamp check valve, belonging to the technical field of clamp check valves. Background Art

[0002] Wafer check valve is also called reverse flow valve, non-return valve, back pressure valve, one-way valve. This type of valve is automatically opened and closed by the force generated by the flow of the medium in the pipeline, and is an automatic valve.

[0003] A spring force adjustment structure of a wafer check valve disclosed in Chinese patent application publication specification CN219796222U comprises a wafer check valve body arranged between two pipes, a connecting piece is detachably connected to the left side of the inner part of the wafer check valve body, a check structure for checking the wafer check valve body is arranged on the right side of the inner part of the wafer check valve body, and an adjustment structure for adjusting the spring force of the check structure is fixedly connected to the left side of the check structure. In the utility model, the problem that the spring force of the wafer check valve cannot be adjusted in the prior art is solved by arranging a wafer check valve body, a connecting piece, a check structure and an adjustment structure.

[0004] It can be seen from the technical solution of the above patent that when adjusting the elastic force of the device, the check valve body must first be removed from between the pipes and then installed after the adjustment is completed, which makes the operation process more troublesome. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] The purpose of the utility model is to provide an elastic force adjustment structure for a clamp check valve in order to solve the above problems, so as to solve the problem in the prior art that the operation is not convenient enough when adjusting the elastic force of the device.

[0007] (II) Technical solution

[0008] The utility model is implemented through the following technical scheme: an elastic force adjustment structure of a clamped check valve, an elastic force adjustment mechanism is arranged inside the valve body, the elastic force adjustment mechanism includes a check plate, the outer surface of the check plate is fixedly connected to two support plates, a two-way threaded rod is arranged inside the valve body, the interior of each support plate is rotatably connected to the two-way threaded rod, the outer surface of the two-way threaded rod is threadedly connected to two movable shafts, the outer surface of each movable shaft is fixedly connected to a movable joint 1, the interior of each movable joint 1 is rotatably connected to a top block, and the end of each top block away from the movable joint 1 is rotatably connected to a movable joint 2.

[0009] Preferably, a guide rod is fixedly connected to the outer surface of the check plate, and the guide rod is sleeved with the bidirectional threaded rod. The bidirectional threaded rod passes through the inside of the guide rod, and the guide rod will not hinder the rotation of the bidirectional threaded rod.

[0010] Preferably, the outer surface of the guide rod is slidably connected to a push plate, and the outer surface of each of the movable joints 2 is fixedly connected to the push plate. The guide rod supports and guides the push plate, so that the movable joint 2 can maintain stability when pushing the push plate to slide.

[0011] Preferably, a fixing block is fixedly connected to the top of the bidirectional threaded rod, and a cross slot is provided on the top of the fixing block. The fixing block and the bidirectional threaded rod can be rotated by using a screwdriver in cooperation with the cross slot.

[0012] Preferably, the internal thread of the valve body is connected with a baffle, and the outer surface of the guide rod is sleeved with the baffle. The baffle supports and guides the guide rod and can limit the spring.

[0013] Preferably, a return spring is sleeved on the outer surface of the guide rod, and two sliding grooves are provided inside the valve body, each of the sliding grooves is slidably connected to the surface of the check plate, and the return spring is located between the baffle plate and the push plate. The spring is compressed by reducing the distance between the push plate and the baffle plate, and the movement of the check plate is limited by setting the sliding groove.

[0014] Preferably, a threaded hole is provided on the top of the valve body, and the threaded hole is connected to the corresponding sliding groove. A bolt plug is provided inside the valve body, and the outer surface of the bolt plug is threadedly connected to the threaded hole. When the check valve is in a closed state, the threaded hole is located directly above the fixed block. When the elastic force of the device needs to be adjusted, the bolt plug is opened and the device is adjusted from the threaded hole. When the device is in normal use, the bolt plug is threadedly fixed in the threaded hole to prevent leakage of the medium.

[0015] The utility model provides an elastic force adjustment structure for a clamp check valve, which has the following beneficial effects:

[0016] 1. The elastic force adjustment structure of the clamp check valve is provided with an elastic force adjustment mechanism. When the elastic force of the device needs to be adjusted, the bolt plug is rotated to remove the bolt plug, and a screwdriver is used to cooperate with the cross slot to rotate the bidirectional threaded rod. The two moving shafts are moved in opposite directions through the rotation of the bidirectional threaded rod. The inclination angle of the top block is changed through the movement of the moving shaft, so that the top block pushes the push plate to slide along the outer surface of the guide rod, and the distance between the push plate and the baffle plate is changed, so that the compression state of the reset spring is changed, thereby achieving the purpose of adjusting the elastic force of the device without disassembling the device, and the operation is simple and convenient.

[0017] 2. The elastic force adjustment structure of the clamp check valve is provided with components such as a sliding groove, a check plate and a baffle. When the device needs to be repaired, the baffle can be removed from the inside of the valve body by rotating the baffle, and the check plate can be moved out of the valve body along the inner wall of the sliding groove with the elastic force adjustment mechanism, thereby achieving the effect of simple and quick assembly and disassembly of the device, which is convenient for the staff to repair the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0019] Figure 2 It is an exploded schematic diagram of the internal structure of the utility model;

[0020] Figure 3 For the utility model Figure 2 A schematic diagram of the structure enlargement at the center A;

[0021] Figure 4 It is a cross-sectional view of the internal structure of the valve body of the utility model.

[0022] Description of Reference Numerals

[0023] 1. Valve body;

[0024] 2. Elastic force adjustment mechanism; 201. Check plate; 202. Support plate; 203. Bidirectional threaded rod; 204. Moving shaft; 205. Active joint 1; 206. Top block; 207. Active joint 2; 208. Guide rod; 209. Push plate; 210. Fixed block; 211. Cross slot;

[0025] 3. Baffle; 4. Return spring; 5. Sliding groove; 6. Threaded hole; 7. Bolt plug. DETAILED DESCRIPTION

[0026] The embodiment of the utility model provides an elastic force adjustment structure of a clamp check valve.

[0027] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 An elastic force adjustment mechanism 2 is arranged inside the valve body 1, and the elastic force adjustment mechanism 2 includes a check plate 201. The device pushes the check plate 201 to block the inlet of the valve body 1 through the elastic force of the reset spring 4 to complete the check function of the device.

[0028] Two support plates 202 are fixedly connected to the outer surface of the check plate 201, and a two-way threaded rod 203 is arranged inside the valve body 1. The interior of each support plate 202 is rotatably connected to the two-way threaded rod 203. The outer surface of the two-way threaded rod 203 is threadedly connected to two movable shafts 204. The support plate 202 supports the two-way threaded rod 203. When the two-way threaded rod 203 rotates, the two movable shafts 204 slide toward the two ends of the two-way threaded rod 203.

[0029] The outer surface of each movable shaft 204 is fixedly connected with a movable joint 205, the interior of each movable joint 205 is rotatably connected with a top block 206, and the end of each top block 206 away from the movable joint 205 is rotatably connected with a movable joint 207. The movable joint 205 plays a fixed supporting role for the position of one end of the top block 206, and the movable joint 207 plays a fixed supporting role for the other end of the top block 206.

[0030] Please refer to Figure 2 , Figure 3 and Figure 4 The outer surface of the check plate 201 is fixedly connected with a guide rod 208 , and the guide rod 208 is sleeved with the bidirectional threaded rod 203 , and the bidirectional threaded rod 203 passes through the inside of the guide rod 208 , and the guide rod 208 will not hinder the rotation of the bidirectional threaded rod 203 .

[0031] Please refer to Figure 2 , Figure 3 and Figure 4 The outer surface of the guide rod 208 is slidably connected to a push plate 209, and the outer surface of each movable joint 207 is fixedly connected to the push plate 209. The guide rod 208 supports and guides the push plate 209, so that the movable joint 207 can maintain stability when pushing the push plate 209 to slide.

[0032] Please refer to Figure 3 and Figure 4 The top of the bidirectional threaded rod 203 is fixedly connected with a fixing block 210 , and a cross slot 211 is provided on the top of the fixing block 210 . The fixing block 210 and the bidirectional threaded rod 203 can be rotated by using a screwdriver and the cross slot 211 .

[0033] Please refer to Figure 1 , Figure 2 and Figure 4 The internal thread of the valve body 1 is connected with a baffle 3, and the outer surface of the guide rod 208 is sleeved with the baffle 3. The baffle 3 supports and guides the guide rod 208 and can limit the spring.

[0034] Please refer to Figure 2 and Figure 4The outer surface of the guide rod 208 is sleeved with a return spring 4, and two sliding grooves 5 are provided inside the valve body 1. Each sliding groove 5 is slidably connected to the surface of the check plate 201. The return spring 4 is located between the baffle plate 3 and the push plate 209. The spring is compressed by reducing the distance between the push plate 209 and the baffle plate 3. The movement of the check plate 201 is limited by setting the sliding groove 5.

[0035] Please refer to Figure 1 and Figure 4 A threaded hole 6 is provided on the top of the valve body 1, and the threaded hole 6 is connected to the corresponding sliding groove 5. A bolt plug 7 is provided inside the valve body 1, and the outer surface of the bolt plug 7 is threadedly connected to the threaded hole 6. When the check valve is in a closed state, the threaded hole 6 is located directly above the fixed block 210. When it is necessary to adjust the elastic force of the device, the bolt plug 7 is opened and the device is adjusted from the threaded hole 6. When the device is in normal use, the bolt plug 7 is threadedly fixed in the threaded hole 6 to prevent leakage of the medium.

[0036] When the utility model is in use: when the elastic force of the device needs to be adjusted, the bolt plug 7 is rotated to remove, and the two-way threaded rod 203 is rotated with a screwdriver in conjunction with the cross slot 211. The two movable shafts 204 are moved in opposite directions through the rotation of the two-way threaded rod 203. The movement of the movable shaft 204 changes the inclination angle of the top block 206, so that the top block 206 pushes the push plate 209 to slide along the outer surface of the guide rod 208. The movement of the push plate 209 causes the space between the push plate 209 and the baffle 3 to change, so that the elastic force of the reset spring 4 pushing the push plate 209 and the check plate 201 changes. After the elastic force adjustment is completed, the bolt plug 7 is threadedly fixed in the threaded hole 6 to prevent the device from leaking the medium when in use, thereby achieving the purpose of being able to adjust the elastic force of the device without disassembling the device.

[0037] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. An elastic force adjustment structure for a clamp check valve, characterized in that: An elastic force adjustment mechanism (2) is arranged inside the valve body (1), and the elastic force adjustment mechanism (2) comprises a check plate (201), and the outer surface of the check plate (201) is fixedly connected to two support plates (202), and a bidirectional threaded rod (203) is arranged inside the valve body (1), and the interior of each support plate (202) is rotatably connected to the bidirectional threaded rod (203), and the outer surface of the bidirectional threaded rod (203) is threadedly connected to two movable shafts (204), and the outer surface of each movable shaft (204) is fixedly connected to a movable joint 1 (205), and the interior of each movable joint 1 (205) is rotatably connected to a top block (206), and the end of each top block (206) away from the movable joint 1 (205) is rotatably connected to a movable joint 2 (207); The outer surface of the check plate (201) is fixedly connected to a guide rod (208), the guide rod (208) is sleeved with the bidirectional threaded rod (203), the top of the bidirectional threaded rod (203) is fixedly connected to a fixing block (210), a cross groove (211) is provided on the top of the fixing block (210), the internal thread of the valve body (1) is connected to a baffle (3), and the outer surface of the guide rod (208) is sleeved with the baffle (3); The outer surface of the guide rod (208) is sleeved with a return spring (4), and the interior of the valve body (1) is provided with two sliding grooves (5), and each of the sliding grooves (5) is slidably connected to the surface of the check plate (201).

2. The elastic force adjustment structure of the wafer check valve according to claim 1 is characterized in that: The outer surface of the guide rod (208) is slidably connected to a push plate (209), and the outer surface of each movable joint 2 (207) is fixedly connected to the push plate (209).

3. The elastic force adjustment structure of the wafer check valve according to claim 1, characterized in that: A threaded hole (6) is provided on the top of the valve body (1), and the threaded hole (6) is connected to the corresponding sliding groove (5). A bolt plug (7) is provided inside the valve body (1), and the outer surface of the bolt plug (7) is threadedly connected to the threaded hole (6).

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