Pneumatic detection machine for breather valve

Abstract

The utility model relates to the technical field of detection equipment, in particular to a pneumatic detection machine for a ventilation valve, which comprises a bottom plate, a water tank which is fixedly connected with the upper surface of the bottom plate and is internally filled with clear water, and a rack which is fixedly connected with the bottom plate on two sides of the water tank, and further comprises a detection pipe which is arranged in the water tank, the bottom end of the detection pipe is immersed below the liquid level of clear water contained in the water tank, the air cylinder is arranged above the detection pipe, and the bottom of the air cylinder is fixedly connected with a connector; the ventilation valve is pressed on the inner wall of the top end of the detection pipe during detection, the piston moves downwards to convey air in the air cylinder into the detection pipe through the ventilation valve, and whether bubbles are generated at the end, not in clear water, of the detection pipe or not is observed to detect the air permeability of the ventilation valve. Whether clear water leaks into the ventilation valve or not is observed to detect the waterproofness of the ventilation valve, the ventilation valve does not need to be immersed below the liquid level in the detection process, bubbles cannot be generated, and the accuracy of the detection result is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of detection equipment, in particular to a pneumatic detection machine for a breathable valve. Background Art

[0002] The breathable valve is formed by combining the eptfe membrane into a sealed component through injection molding, ultrasonic welding, etc. There are mainly threaded, press-in, snap-on, twist-on and other breathable valves.

[0003] Before use, a breathable valve generally needs to be tested for air permeability and water resistance. The existing method is to immerse the end of the breathable valve connected to the EPTFE membrane underwater, ventilate the breathable valve, and observe whether bubbles are generated to test the air permeability of the breathable valve. Then, the air in the breathable valve is discharged through a suction device to generate negative pressure in the breathable valve, and the water resistance of the breathable valve is tested by observing whether there is water seepage in the valve. However, bubbles are easily generated when the breathable valve is immersed in water. If the bubbles attach to the damaged part of the breathable valve, they may form a blockage at the damaged part, affecting the accuracy of the breathable valve water resistance test. For this reason, we propose a pneumatic testing machine for breathable valves. Utility Model Content

[0004] One of the technical problems to be solved by this application is that the existing method of immersing the breathable valve in water for preliminary testing is prone to generate bubbles. If the bubbles adhere to the damaged part of the breathable valve, they may form a blockage at the damaged part, affecting the accuracy of the breathable valve waterproof test.

[0005] To solve the above technical problems, the present invention provides a pneumatic testing machine for a vent valve, comprising a base plate, a water tank containing clean water fixedly connected to the upper surface of the base plate, a frame fixedly connected to the base plate on both sides of the water tank, and further comprising:

[0006] A detection tube, the detection tube is installed in the water tank, the bottom end of the detection tube is immersed below the level of the clean water contained in the water tank, and

[0007] An air cylinder, the air cylinder is arranged above the detection tube, the bottom of the air cylinder is fixedly connected to a joint, the top of the air cylinder is penetrated by a linkage rod, one end of the linkage rod located in the inner cavity of the air cylinder is fixedly connected to a piston, and

[0008] An extrusion device, the extrusion device is fixedly mounted on the frame, the output end of the extrusion device is fixedly connected to the top end of the linkage rod, and

[0009] a first spring, wherein the first spring is sleeved on a section of the linkage rod located above the gas cylinder, the bottom end of the first spring is fixedly connected to the gas cylinder, and the top end of the first spring is fixedly connected to the outer wall of the linkage rod, and

[0010] Two locking rings are symmetrically mounted on the side walls of the top end of the cylinder, and a locking structure is mounted on the frame below the two locking rings to cooperate with the locking rings and lock the position of the cylinder.

[0011] Preferably, a sealing gasket is fixedly connected to the inner wall of the top end of the detection tube, a support frame is fixedly connected to the inner wall of the top end of the water tank, and the bottom end of the detection tube passes through the middle section of the support frame and is fixedly connected to the support frame.

[0012] Preferably, the joint is annular in structure, and an inner thread for connecting to a breathable valve is provided on the inner wall of the bottom end of the joint.

[0013] Preferably, the maximum compression length of the first spring is greater than the height of the gas cylinder.

[0014] Preferably, the locking structure includes a sliding tube with one end fixedly connected to the frame, the end of the sliding tube away from the frame is slidably connected to a sliding rod, the end of the sliding rod located in the inner cavity of the sliding tube is fixedly connected to a second spring in a compressed state, and the end of the sliding rod located outside the sliding tube is fixedly connected to a locking block.

[0015] Preferably, a push rod is embedded in the locking ring, and the end of the push rod passes through the side wall of the cylinder and extends into the inner cavity of the cylinder. One end of the push rod located inside the cylinder is provided with an inclined surface adapted to the upper surface of the piston.

[0016] Preferably, the connector is annular in structure, and a circular magnet is fixedly connected to the inner wall of the bottom end of the connector.

[0017] The utility model has at least the following beneficial effects:

[0018] 1. When testing the air valve, press it against the inner wall of the top of the test tube, move the piston downward to transport the air in the cylinder through the air valve into the test tube, and observe whether bubbles are generated at the end of the test tube submerged in clean water to test the air permeability of the air valve. Move the piston upward to pump water upward and observe whether clean water leaks into the air valve to test the water resistance of the air valve. The air valve does not need to be immersed in the liquid during the testing process, so no bubbles will be generated, which greatly improves the accuracy of the test results.

[0019] 2. When the piston moves up to the top of the cylinder, the push rod can slide into the locking ring through the inclined surface, pushing out the locking block inserted in the locking ring to lock the cylinder, thereby unlocking the cylinder. The cylinder can drive the cylinder to move up and remove the air valve installed on the bottom of the cylinder from the detection tube, making it convenient for the user to replace the next air valve for detection, thereby greatly improving the detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1This is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the connection structure between the detection tube and the water tank of the utility model;

[0022] Figure 3 This is a schematic diagram of the connection structure of the gas cylinder, the linkage rod and the first spring of the utility model;

[0023] Figure 4 This is a schematic diagram of the internal structure of the gas cylinder of the utility model;

[0024] Figure 5 This is a schematic diagram of the connection of the locking structure of the utility model;

[0025] Figure 6 This is a schematic diagram of the installation structure of the magnet and the connector of the utility model;

[0026] Figure 7 This is a schematic diagram of the connection structure between the push rod and the air cylinder of the utility model.

[0027] In the figure: 1. Base plate; 2. Frame; 3. Water tank; 4. Detection tube; 5. Support frame; 6. Air cylinder; 7. Connector; 8. Linkage rod; 9. Piston; 10. Cylinder; 11. First spring; 12. Locking ring; 13. Slide tube; 14. Slide rod; 15. Second spring; 16. Locking block; 17. Push rod; 18. Inclined surface; 19. Magnet. DETAILED DESCRIPTION

[0028] The following will be combined with the accompanying 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.

[0029] Example 1

[0030] See also Figure 1-5 , the utility model provides a technical solution:

[0031] A pneumatic testing machine for a vent valve includes a base plate 1, a water tank 3 containing clean water is fixedly connected to the upper surface of the base plate 1, a frame 2 is fixedly connected to the base plate 1 on both sides of the water tank 3, and further includes:

[0032] The detection tube 4 is installed in the water tank 3, and the bottom end of the detection tube 4 is immersed below the level of the clean water contained in the water tank 3, so as to facilitate the detection of the air permeability of the air valve, and

[0033] The air cylinder 6 is arranged above the detection tube 4, and the bottom of the air cylinder 6 is fixedly connected with a joint 7, through which the air valve can be installed below the air cylinder 6. A linkage rod 8 is passed through the top of the air cylinder 6, and one end of the linkage rod 8 located in the inner cavity of the air cylinder 6 is fixedly connected with a piston 9, and

[0034] The extrusion device is fixedly mounted on the frame 2, and the output end of the extrusion device is fixedly connected to the top of the linkage rod 8 by the cylinder 10, and

[0035] A first spring 11 is sleeved on the linkage rod 8 above the gas cylinder 6, the bottom end of the first spring 11 is fixedly connected to the gas cylinder 6, and the top end of the first spring 11 is fixedly connected to the outer wall of the linkage rod 8, and

[0036] Two locking rings 12 are symmetrically mounted on the side walls of the top of the cylinder 6. A locking structure is mounted on the frame 2 below the two locking rings 12 to cooperate with the locking rings 12 to lock the position of the cylinder 6. The locking structure also includes:

[0037] A sealing gasket is fixedly connected to the inner wall of the top of the detection tube 4, and the sealing gasket improves the air tightness of the bottom of the breathable valve and the inner wall of the detection tube 4. The inner wall of the top of the water tank 3 is fixedly connected to the support frame 5, and the bottom end of the detection tube 4 passes through the middle section of the support frame 5 and is fixedly connected to the support frame 5, and

[0038] The connector 7 is annular in structure, and an internal thread for connecting the vent valve is provided on the inner wall of the bottom end of the connector 7.

[0039] The maximum compression length of the first spring 11 is greater than the height of the air cylinder 6, and the first spring 11 is prevented from being over-compressed during the downward movement of the piston 9, which may cause damage to the first spring 11.

[0040] The locking structure includes a sliding tube 13 with one end fixedly connected to the frame 2, and a sliding rod 14 is slidably connected to the end of the sliding tube 13 away from the frame 2. The end of the sliding rod 14 located in the inner cavity of the sliding tube 13 is fixedly connected to a second spring 15 in a compressed state, and the end of the sliding rod 14 located outside the sliding tube 13 is fixedly connected to a locking block 16.

[0041] When in use, first fix the air valve to the bottom of the air cylinder 6 through the joint 7, then start the cylinder 10 to push the linkage rod 8 downward. Supported by the first spring 11, the air cylinder 6 moves downward synchronously until the bottom end of the air valve is inserted into the detection tube 4. At this time, the air cylinder 6 is blocked and cannot move further downward. The cylinder 10 continues to apply pressure to push the piston 9 in the air cylinder 6 downward through the linkage rod 8, pushing the air in the air cylinder 6 into the air valve. Since the air valve fits tightly with the inner wall of the detection tube 4 through the sealing gasket, the air cannot leak from the connection between the detection tube 4 and the air valve, and can only continue to move downward along the detection tube 4 into the detection tube 4. The user can observe whether there is air at the end of the detection tube 4 submerged in clean water. Bubbles are generated, thereby detecting the air permeability of the air valve. When the bottom end of the air valve is tightly fitted with the detection tube 4, the locking rings 12 on both sides of the air cylinder 6 are moved to align with the locking blocks 16. The locking blocks 16 are inserted into the locking rings 12 under the push of the second spring 15 to lock the air cylinder 6, so that the bottom end of the air valve is continuously tightly fitted with the detection tube 4. When the cylinder 10 reversely pulls the linkage rod 8 to drive the piston 9 to move upward, a negative pressure effect can be generated to draw the clean water in the water tank 3 upward. The user can detect the waterproofness of the air valve by observing whether the clean water leaks into the air valve. Since the air valve does not need to be immersed in the liquid during the detection process, no bubbles will be generated, which greatly improves the accuracy of the detection results.

[0042] Example 2

[0043] See also Figure 6-7 , the utility model provides a technical solution:

[0044] Different from Example 1, this solution provides another implementation of the air valve pneumatic testing machine:

[0045] A pneumatic testing machine for a vent valve includes a base plate 1, a water tank 3 containing clean water is fixedly connected to the upper surface of the base plate 1, a frame 2 is fixedly connected to the base plate 1 on both sides of the water tank 3, and further includes:

[0046] The detection tube 4 is installed in the water tank 3, and the bottom end of the detection tube 4 is immersed below the level of the clean water contained in the water tank 3, so as to facilitate the detection of the air permeability of the air valve, and

[0047] The air cylinder 6 is arranged above the detection tube 4, and the bottom of the air cylinder 6 is fixedly connected with a joint 7, through which the air valve can be installed below the air cylinder 6. A linkage rod 8 is passed through the top of the air cylinder 6, and one end of the linkage rod 8 located in the inner cavity of the air cylinder 6 is fixedly connected with a piston 9, and

[0048] The extrusion device is fixedly mounted on the frame 2, and the output end of the extrusion device is fixedly connected to the top of the linkage rod 8 by the cylinder 10, and

[0049] A first spring 11 is sleeved on the linkage rod 8 above the gas cylinder 6, the bottom end of the first spring 11 is fixedly connected to the gas cylinder 6, and the top end of the first spring 11 is fixedly connected to the outer wall of the linkage rod 8, and

[0050] Two locking rings 12 are symmetrically mounted on the side walls of the top of the cylinder 6. A locking structure is mounted on the frame 2 below the two locking rings 12 to cooperate with the locking rings 12 to lock the position of the cylinder 6. The locking structure also includes:

[0051] A push rod 17 is embedded in the locking ring 12. The end of the push rod 17 passes through the side wall of the cylinder 6 and extends into the inner cavity of the cylinder 6. One end of the push rod 17 located inside the cylinder 6 is provided with an inclined surface 18 adapted to the upper surface of the piston 9, and

[0052] The connector 7 is annular in structure, and a ring-shaped magnet 19 is fixedly connected to the inner wall of the bottom end of the connector 7 .

[0053] When the cylinder 10 contracts and drives the piston 9 to move up to the top of the air cylinder 6, the piston 9 can squeeze the push rod 17 through the inclined surface 18 to slide outward of the locking ring 12, thereby pushing out the locking block 16 inserted in the locking ring 12, thereby unlocking the air cylinder 6. After the air cylinder 6 is unlocked, it moves up with the linkage rod 8 to make the air valve slide out from the top of the detection tube 4 synchronously, so that the user can disassemble the air valve after detection. A ring-shaped magnet 19 is provided in the joint 7 for adsorbing the air valve made of iron, cobalt and nickel materials, so as to facilitate the installation and disassembly of the air valve made of iron, cobalt and nickel materials.

[0054] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0055] 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 pneumatic testing machine for a vent valve, comprising a base plate (1), a water tank (3) containing clean water being fixedly connected to the upper surface of the base plate (1), and frames (2) being fixedly connected to the base plate (1) on both sides of the water tank (3), characterized in that: Also included are: A detection tube (4), the detection tube (4) is installed in the water tank (3), the bottom end of the detection tube (4) is immersed below the level of the clean water contained in the water tank (3), and An air cylinder (6), the air cylinder (6) is arranged above the detection tube (4), a joint (7) is fixedly connected to the bottom of the air cylinder (6), a linkage rod (8) is passed through the top of the air cylinder (6), and a piston (9) is fixedly connected to one end of the linkage rod (8) located in the inner cavity of the air cylinder (6), and An extrusion device, the extrusion device is fixedly mounted on the frame (2), the output end of the extrusion device is fixedly connected to the top end of the linkage rod (8), and a first spring (11), the first spring (11) being sleeved on a section of the linkage rod (8) located above the gas cylinder (6), the bottom end of the first spring (11) being fixedly connected to the gas cylinder (6), the top end of the first spring (11) being fixedly connected to the outer wall of the linkage rod (8), and Two locking rings (12) are symmetrically mounted on the top side walls of the air cylinder (6); a locking structure is mounted on the frame (2) below the two locking rings (12) and cooperates with the locking rings (12) to lock the position of the air cylinder (6).

2. The air valve pneumatic testing machine according to claim 1, characterized in that: A sealing gasket is fixedly connected to the inner wall of the top end of the detection tube (4), a support frame (5) is fixedly connected to the inner wall of the top end of the water tank (3), and the bottom end of the detection tube (4) passes through the middle section of the support frame (5) and is fixedly connected to the support frame (5).

3. The air valve pneumatic testing machine according to claim 2, characterized in that: The joint (7) is an annular structure, and an internal thread for connecting to a vent valve is provided on the inner wall of the bottom end of the joint (7).

4. The air valve pneumatic testing machine according to claim 3, characterized in that: The maximum compression length of the first spring (11) is greater than the height of the air cylinder (6).

5. The air valve pneumatic testing machine according to claim 4, characterized in that: The locking structure comprises a sliding tube (13) having one end fixedly connected to the frame (2); an end of the sliding tube (13) away from the frame (2) is slidably connected to a sliding rod (14); an end of the sliding rod (14) located in the inner cavity of the sliding tube (13) is fixedly connected to a second spring (15) in a compressed state; and an end of the sliding rod (14) located outside the sliding tube (13) is fixedly connected to a locking block (16).

6. The air valve pneumatic testing machine according to claim 5, characterized in that: A push rod (17) is embedded in the locking ring (12), and the end of the push rod (17) passes through the side wall of the gas cylinder (6) and extends into the inner cavity of the gas cylinder (6). One end of the push rod (17) located inside the gas cylinder (6) is provided with an inclined surface (18) adapted to the upper surface of the piston (9).

7. The air valve pneumatic testing machine according to claim 1, characterized in that: The connector (7) is an annular structure, and a circular magnet (19) is fixedly connected to the inner wall of the bottom end of the connector (7).

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