Check valve detection device

Abstract

The utility model discloses a check valve detection device, and relates to the check valve detection technical field, the check valve detection device comprises a support pedestal, a gas supply structure and a bent frame, the lower end of the bent frame is fixed with the upper surface of the support pedestal, the gas supply structure is arranged at one side of the bent frame, the other side of the bent frame is provided with a gas flowmeter with scales, the gas flowmeter is made of a transparent material, and the support pedestal is fixed on the support pedestal. The air supply structure is installed on the upper surface of the supporting base, a suspension frame is detachably installed on the upper surface of the supporting base and located in front of the bent frame, a control valve is inserted into the upper surface of the suspension frame, a sealing cover cylinder is arranged above the control valve, a buffer disc is slidably inserted into the sealing cover cylinder, and a buffer spring is fixed to the upper surface of the buffer disc. The upper end of the buffer spring is fixed with the inner top wall of the sealing cover cylinder; according to the check valve detection device provided by the utility model, the buffer disc and the buffer spring are arranged, and the buffer disc buffers downward inertia by compressing the buffer spring, so that the check valve is prevented from being damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of check valve detection, in particular to a check valve detection device. Background Art

[0002] A check valve (also known as a non-return valve) is a valve that automatically opens and closes its disc based on the flow of the medium itself, preventing the backflow of the medium. It is also known as a non-return valve, one-way valve, reverse flow valve, or back-pressure valve. A check valve is an automatic valve whose primary functions are to prevent the backflow of the medium, reverse rotation of pumps and drive motors, and release of the medium from the container.

[0003] In order to ensure that the check valve can be closed in time, it is necessary to detect the check valve and detect the amount of gas that needs to flow when the check valve is closed. When the detection device detects the check valve, the check valve to be detected is covered inside by a cylindrical structure, and then gas is passed into the check valve to be detected to detect the amount of gas passing through the check valve. However, when the existing detection equipment is detecting, the cylindrical structure is directly driven to cover above the check valve without buffering, which is easy to damage the check valve to be detected. Therefore, a check valve detection device is proposed. Utility Model Content

[0004] In view of the problem that the above-mentioned existing detection equipment directly drives the cylindrical structure cover above the check valve during detection without buffering, which is easy to damage the check valve to be detected, the present utility model is proposed.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions: a check valve detection device, which includes a supporting base, an air supply structure and a bent frame, the lower end of the bent frame is fixed to the upper surface of the supporting base, the air supply structure is located on one side of the bent frame, and a gas flow meter with a scale is provided on the other side of the bent frame. The gas flow meter is made of transparent material, and the air supply structure is installed on the upper surface of the supporting base. A suspension frame is detachably installed on the upper surface of the supporting base and located in front of the bent frame. A control valve is plugged into the upper surface of the suspension frame, and a sealing cover is provided above the control valve. A buffer disk is slidably plugged into the interior of the sealing cover, and a buffer spring is fixed to the upper surface of the buffer disk. The upper end of the buffer spring is fixed to the inner top wall of the sealing cover, and a cylinder is provided above the sealing cover. The upper end of the bent frame is fixedly sleeved on the fixed end of the cylinder, and the telescopic end of the cylinder is fixed to the upper surface of the sealing cover.

[0006] An air supply hose is fixed to the air outlet end of the air supply structure, and the other end of the air supply hose is fixed to and connected with the lower end of the control valve. A ventilation hose connected to the interior is fixed to the side of the sealing cover tube close to the gas flow meter, and the other end of the ventilation hose is fixed to and connected with the back of the lower end of the gas flow meter. A deflation structure is installed at the end of the lower end of the gas flow meter away from the ventilation hose, and a pressure gauge is installed at the front end of the air supply structure.

[0007] Preferably, force - applying frames are fixed to the left and right sides of the support base, and the two force - applying frames are symmetrically distributed about the axis of the support base.

[0008] Preferably, a damping soft ring is fixed to the outer surface of the buffer disc. The damping soft ring is slidably inserted into the inside of the sealing cover cylinder, and the outer diameter of the damping soft ring is equal to the inner diameter of the sealing cover cylinder.

[0009] Preferably, a three - section telescopic rod is fixed to the upper surface of the buffer disc. The upper end of the three - section telescopic rod is fixed to the inner top wall of the sealing cover cylinder, and the three - section telescopic rod is located on the inner ring side of the buffer spring.

[0010] Preferably, the air - releasing structure includes a communicating pipe and a misaligned cylinder. The misaligned cylinder is rotatably sleeved on the outer surface of the communicating pipe. The gas flowmeter is fixedly sleeved on the outer surface of the communicating pipe. One end of the misaligned cylinder away from the gas flowmeter is in a semi - circular opening shape, and an eccentric hole is opened at one end of the communicating pipe away from the gas flowmeter.

[0011] Preferably, a tightening rod is threadedly inserted into the outer ring surface of the misaligned cylinder, and one end of the tightening rod located inside the misaligned cylinder contacts the outer ring surface of the communicating pipe.

[0012] Advantages of the present utility model:

[0013] 1. By providing the buffer disc and the buffer spring, when the air cylinder pushes the sealing cover cylinder downward, the buffer disc buffers the downward inertia by compressing the buffer spring, preventing the check valve from being damaged by knocking.

[0014] 2. By providing the damping soft ring, when the sealing cover cylinder moves upward under the air cylinder and disengages from the check valve, the damping soft ring exerts a resistance to the buffer spring to push the buffer disc to move relative to the sealing cover cylinder for resetting, preventing the buffer disc from always contacting the check valve when the sealing cover cylinder disengages from the check valve and causing wear to the check valve. Description of the Drawings

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for description in the embodiments. Obviously, the following - described drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings. Among them:

[0016] Figure 1 is a schematic structural diagram of the present utility model;

[0017] Figure 2 is a front - view structural diagram of the present utility model;

[0018] Figure 3 is a top - view structural diagram of the present utility model;

[0019] Figure 4Schematic diagram of the connection between the communicating pipe and the offset cylinder of the present utility model;

[0020] Figure 5 Schematic diagram of the internal structure of the sealing cover cylinder of the present utility model.

[0021] Explanation of reference numerals:

[0022] 1. Support base; 2. Air supply structure; 3. Bent frame; 4. Gas flowmeter; 5. Suspended frame; 6. Sealing cover cylinder; 7. Air release structure; 701. Communicating pipe; 702. Offset cylinder; 703. Eccentric hole; 704. Tightening rod; 8. Buffer spring; 9. Cylinder; 10. Buffer plate; 11. Control valve; 12. Air supply hose; 13. Ventilation hose; 14. Force application frame; 15. Pressure gauge; 16. Damping soft ring; 17. Three-section telescopic rod. Specific implementation manners

[0023] In order to make the above objects, features and advantages of the present utility model more obvious and understandable, the specific implementation manners of the present utility model will be described in detail below with reference to the accompanying drawings of the specification.

[0024] Referring to Figures 1-5 , as an embodiment of the present utility model, a check valve detection device is provided. This check valve detection device includes a support base 1, an air supply structure 2 and a bent frame 3. The air inlet end of the air supply structure 2 is communicated with a gas storage device. Force application frames 14 are fixed on the left and right sides of the support base 1. The two force application frames 14 are symmetrically distributed with respect to the axis of the support base 1. The provision of the force application frames 14 facilitates the handling of the device. The lower end of the bent frame 3 is fixed to the upper surface of the support base 1. The air supply structure 2 is located on one side of the bent frame 3. A gas flowmeter 4 with scales is provided on the other side of the bent frame 3. The gas flowmeter 4 is made of a transparent material, and the gas filled into the gas flowmeter 4 can be observed. The air supply structure 2 is installed on the upper surface of the support base 1. A suspended frame 5 is detachably installed on the upper surface of the support base 1 and in front of the bent frame 3. A control valve 11 is inserted into the upper surface of the suspended frame 5. A sealing cover cylinder 6 is provided above the control valve 11.

[0025] A buffer disk 10 is slidably inserted into the interior of the sealing hood cylinder 6. A buffer spring 8 is fixed to the upper surface of the buffer disk 10, and the upper end of the buffer spring 8 is fixed to the inner top wall of the sealing hood cylinder 6. When the check valve contacts the buffer disk 10 and pushes the buffer spring 8 to compress, it buffers the force received by the check valve to prevent the check valve from being damaged. A damping soft ring 16 is fixed to the outer surface of the buffer disk 10. The damping soft ring 16 is slidably inserted into the interior of the sealing hood cylinder 6. The outer diameter of the damping soft ring 16 is equal to the inner diameter of the sealing hood cylinder 6. The damping soft ring 16 increases the resistance when the buffer disk 10 moves relative to the inner wall of the sealing hood cylinder 6. When the sealing hood cylinder 6 moves upward and disengages from the check valve, the buffer disk 10 disengages from contact with the check valve in time under the resistance of the damping soft ring 16. A three-section telescopic rod 17 is fixed to the upper surface of the buffer disk 10, and the upper end of the three-section telescopic rod 17 is fixed to the inner top wall of the sealing hood cylinder 6. The three-section telescopic rod 17 is located on the inner ring side of the buffer spring 8. The three-section telescopic rod 17 improves the stability of the buffer disk 10 when it moves and prevents the buffer disk 10 from tilting when it moves.

[0026] Above the sealing hood cylinder 6, there is a cylinder 9. The cylinder 9 is connected to a gas storage device. The upper end of the bent frame 3 is fixedly sleeved on the fixed end of the cylinder 9. The telescopic end of the cylinder 9 is fixed to the upper surface of the sealing hood cylinder 6. The cylinder 9 can drive the sealing hood cylinder 6 to move up and down.

[0027] The air outlet end of the air supply structure 2 is fixed with an air supply hose 12. The other end of the air supply hose 12 is fixed and connected to the lower end of the control valve 11. One side of the sealing hood cylinder 6 close to the gas flow meter 4 is fixed with a ventilation hose 13 communicating with the interior. The other end of the ventilation hose 13 is fixed and connected to the lower end back surface of the gas flow meter 4. At the end of the lower end of the gas flow meter 4 away from the ventilation hose 13, a gas release structure 7 is installed. The gas release structure 7 includes a communication pipe 701 and a misaligned cylinder 702. The misaligned cylinder 702 is rotatably sleeved on the outer surface of the communication pipe 701. The gas flow meter 4 is fixedly sleeved on the outer surface of the communication pipe 701. One end of the misaligned cylinder 702 away from the gas flow meter 4 is in a semi-circular opening shape. An eccentric hole 703 is opened at one end of the communication pipe 701 away from the gas flow meter 4. When the misaligned cylinder 702 rotates, it can control whether the semi-circular opening shape communicates with the eccentric hole 703. When the semi-circular opening of the misaligned cylinder 702 is misaligned with the eccentric hole 703, the interior of the gas flow meter 4 is closed. Conversely, the gas inside the gas flow meter 4 can be discharged, which is convenient for the next detection. A tightening rod 704 is threadedly inserted into the outer ring surface of the misaligned cylinder 702. The end of the tightening rod 704 located inside the misaligned cylinder 702 contacts the outer ring surface of the communication pipe 701. Rotating the tightening rod 704 to engage with the misaligned cylinder 702 can press the communication pipe 701, and the relative angle between the misaligned cylinder 702 and the communication pipe 701 can be fixed. A pressure gauge 15 is installed at the front end of the air supply structure 2.

[0028] During use, the check valve to be detected is connected to the control valve 11. Then, the air cylinder 9 controls the sealing cover cylinder 6 to cover downward outside the check valve. The buffer spring 8 pushes the buffer disc 10 into contact with the check valve. The buffer spring 8 buffers the inertia of the downward movement of the sealing cover cylinder 6 through compression, preventing the check valve from being damaged. The air supply structure 2 supplies air to the control valve 11 through the air supply hose 12. The gas passing through the check valve is filled into the gas flowmeter 4 through the ventilation hose 13 inside the sealing cover cylinder 6 to detect the amount of gas passing through.

[0029] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not restrictive. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A check valve detection device, comprising a support base (1), a gas supply structure (2) and a bent frame (3), characterized in that: The lower end of the bent frame (3) is fixed to the upper surface of the support base (1). The air supply structure (2) is located on one side of the bent frame (3). A gas flowmeter (4) with scales is arranged on the other side of the bent frame (3). The gas flowmeter (4) is made of a transparent material. The air supply structure (2) is installed on the upper surface of the support base (1). A suspension frame (5) is detachably installed on the upper surface of the support base (1) and in front of the bent frame (3). A control valve (11) is inserted into the upper surface of the suspension frame (5). A sealing cover cylinder (6) is arranged above the control valve (11). A buffer plate (10) is slidably inserted into the sealing cover cylinder (6). A buffer spring (8) is fixed to the upper surface of the buffer plate (10). The upper end of the buffer spring (8) is fixed to the inner top wall of the sealing cover cylinder (6). A cylinder (9) is arranged above the sealing cover cylinder (6). The upper end of the bent frame (3) is fixedly sleeved on the fixed end of the cylinder (9). The telescopic end of the cylinder (9) is fixed to the upper surface of the sealing cover cylinder (6). The air outlet end of the air supply structure (2) is fixed with an air supply hose (12). The other end of the air supply hose (12) is fixed and communicated with the lower end of the control valve (11). A ventilation hose (13) communicated with the inside is fixed to one side of the sealing cover cylinder (6) close to the gas flowmeter (4). The other end of the ventilation hose (13) is fixed and communicated with the back of the lower end of the gas flowmeter (4). A pressure relief structure (7) is installed at one end of the lower end of the gas flowmeter (4) away from the ventilation hose (13). A pressure gauge (15) is installed at the front end of the air supply structure (2).

2. The check valve detection device according to claim 1, characterized in that: Force application frames (14) are fixed to the left and right side surfaces of the support base (1). The two force application frames (14) are symmetrically distributed with respect to the axis of the support base (1).

3. The check valve detection device according to claim 1, characterized in that: A damping soft ring (16) is fixed to the outer surface of the buffer plate (10). The damping soft ring (16) is slidably inserted into the sealing cover cylinder (6). The outer diameter of the damping soft ring (16) is equal to the inner diameter of the sealing cover cylinder (6).

4. The check valve detection device according to claim 1, characterized in that: A three-section telescopic rod (17) is fixed to the upper surface of the buffer plate (10). The upper end of the three-section telescopic rod (17) is fixed to the inner top wall of the sealing cover cylinder (6). The three-section telescopic rod (17) is located on the inner ring side of the buffer spring (8).

5. The check valve detection device according to claim 1, characterized in that: The pressure relief structure (7) includes a communicating pipe (701) and a misaligned cylinder (702). The misaligned cylinder (702) is rotatably sleeved on the outer surface of the communicating pipe (701). The gas flowmeter (4) is fixedly sleeved on the outer surface of the communicating pipe (701). One end of the misaligned cylinder (702) away from the gas flowmeter (4) is in a semi-circular opening shape. An eccentric hole (703) is opened at one end of the communicating pipe (701) away from the gas flowmeter (4).

6. The check valve detection device according to claim 5, characterized in that: A tightening rod (704) is threadedly inserted into the outer ring surface of the misaligned cylinder (702). One end of the tightening rod (704) located inside the misaligned cylinder (702) contacts the outer ring surface of the communicating pipe (701).

Images