Water pump flange interface leak detection quick connection clamp

Abstract

The utility model discloses a water pump flange interface leak hunting quick connection clamp which comprises a cylinder body, a steel shaft is arranged in the cylinder body, the end portion of the steel shaft is provided with an abutting portion used for abutting against the position of a water pump interface, a sealing cavity is formed between the abutting portion and the cylinder body, and a connecting piece used for being connected with a water pump flange is arranged on the cylinder body. In actual use, the leak detection quick-connection clamp is connected and installed at a connector of a water pump, an air source is introduced into the air inlet of the cylinder body, and the leak detection quick-connection clamp is connected and installed at the connector of the water pump through the air inlet of the cylinder body. The air source enters the sealing cavity and drives the steel shaft to axially move until the sealing gasket on the abutting part tightly presses the water pump connector to achieve sealing, at the moment, air tightness detection can be achieved through the air tightness detection channel, operation is easy, convenient and rapid, and the detection efficiency is effectively improved.

Description

Technical Field

[0001] The utility model relates to the field of sealing detection in a water pump manufacturing process, in particular to a quick-connect clamp for leak detection of a water pump flange interface. Background Art

[0002] During the manufacturing process of water pumps, it is necessary to perform sealing tests on the water inlet and outlet. The existing leak detection fixtures used in the manufacturing process of flange interface water pumps generally use manual screws to tighten to achieve the seal between the leak detection fixture and the water pump interface, or the water pump is placed on a press platform to press and seal for leak detection. The above methods are cumbersome to operate, have poor reliability, and the water pump is bulky and inconvenient to carry, which is inefficient and needs to be further improved. Utility Model Content

[0003] In order to further improve the convenience of operation, the present application provides a quick-connect clamp for leak detection of a water pump flange interface.

[0004] This application provides a quick-connect fixture for leak detection of a water pump flange interface, which adopts the following technical solutions:

[0005] A quick-connect fixture for leak detection at a water pump flange interface comprises a cylinder body, a steel shaft disposed therein, a pressing portion disposed at the end of the steel shaft for pressing against the water pump interface, a sealed cavity formed between the pressing portion and the cylinder body, a connector disposed on the cylinder body for connection to the water pump flange, an airtight detection passage penetrating the steel shaft, and an air inlet disposed on the cylinder body that is connected to the sealed cavity.

[0006] Optionally, an installation groove is provided on the end surface of the pressing portion, and a sealing gasket that cooperates with the installation groove is installed in the installation groove.

[0007] Optionally, a convex ring is provided on the bottom wall of the mounting groove, and the sealing gasket has a ring groove adapted to the convex ring.

[0008] Optionally, the end of the steel shaft has an outwardly protruding retaining ring, which prevents the sealing gasket from falling out of the installation groove, and the retaining ring is adapted to the interface of the water pump.

[0009] Optionally, the steel shaft is connected to a limiting sleeve, and the limiting sleeve is used to abut against the cylinder body to limit the axial stroke of the steel shaft.

[0010] Optionally, a reset spring is provided between the limiting sleeve and the cylinder body to connect the two, and the reset spring is used to drive the steel shaft to move axially and reset.

[0011] Optionally, the connecting member includes a locking shaft and a locking buckle, the locking shaft is used to pass through the mounting hole on the water pump flange, the end of the locking shaft is provided with a slot, and the locking buckle is engaged with the slot.

[0012] Optionally, a socket is formed through one side of the lock buckle, and a clamping portion is formed at a slot provided on the lock shaft, and the socket is adapted to the clamping portion.

[0013] Optionally, an inner wall of the lock buckle is provided with an elastic positioning bead, and the elastic positioning bead is used to press the clamping portion.

[0014] Optionally, sealing rings are provided at the connection between the cylinder body and the pressing portion, and at the connection between the cylinder body and the steel shaft.

[0015] In summary, this application includes at least one of the following beneficial technical effects:

[0016] 1. In actual use, the leak detection quick-connect fixture is connected and installed at the interface of the water pump. By introducing the air source into the air inlet of the cylinder body, the air source enters the sealing cavity and drives the steel shaft to move axially until the sealing gasket on the pressing part presses the water pump interface to achieve sealing. At this time, the air tightness test can be achieved through the air tightness detection path. The operation is simple, convenient and fast, which effectively improves the detection efficiency.

[0017] 2. The cylinder body is removable by using a lock shaft and a lock buckle connection method. When installing, just pass the lock shaft through the mounting hole of the water pump flange and then lock the lock buckle. When disassembling, remove the lock buckle and then remove the cylinder body, realizing quick installation and removal of the entire fixture, further improving operating efficiency.

[0018] 3. The design of the limit sleeve can limit the distance of the axial movement of the steel shaft to avoid excessive axial movement of the steel shaft. The reset spring can drive the axial movement of the steel shaft to reset after cutting off the air source, making it easier for the fixture to detect the next water pump product. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is an overall structural diagram of an embodiment of the present application.

[0020] Figure 2 It is a cross-sectional view of the embodiment of the present application at the lock shaft.

[0021] Figure 3 It is a cross-sectional view of an embodiment of the present application at the air inlet.

[0022] Figure 4 It is a structural diagram of the lock shaft and the lock buckle in the embodiment of the present application.

[0023] Description of reference numerals:

[0024] 1. Cylinder body; 2. Steel shaft; 3. Pressing part; 4. Sealing chamber; 5. Airtight detection passage; 6. Air inlet; 7. Mounting groove; 8. Sealing gasket; 9. Protruding ring; 10. Ring groove; 11. Retaining ring; 12. Sealing ring; 13. Groove body; 14. Limiting sleeve; 15. Travel groove; 16. Return spring; 17. Lock shaft; 18. Lock buckle; 19. Perforation; 20. Card slot; 21. Card connection part; 22. Socket; 23. Hole position; 24. Connecting hole. DETAILED DESCRIPTION

[0025] The following is combined with Figure 1-4 This application is described in further detail.

[0026] A quick-connect fixture for leak detection of a water pump flange interface, such as Figure 1-Figure 3 As shown, it includes a cylinder body 1, in which a steel shaft 2 is axially slidably connected, and the end of the steel shaft 2 has a pressing part 3 for pressing the end face of the water pump interface. The interface of the water pump is a water inlet or a water outlet, and a sealed cavity 4 is formed between the pressing part 3 and the cylinder body 1. Connectors for connecting to the flange on the water pump are symmetrically arranged on both sides of the cylinder body 1. The cylinder body 1 is detachably connected to the flange of the water pump with the help of the connecting parts. An airtight detection passage 5 is vertically opened in the center of the steel shaft 2. The airtight detection passage 5 runs through both ends of the steel shaft 2. One end of the airtight detection passage 5 is used to communicate with the inside of the interface of the water pump, and the other end of the airtight detection passage 5 is used to connect to the detection equipment. The airtightness is detected with the help of the detection equipment. An air inlet 6 connected to the sealed cavity 4 is opened on the cylinder body 1, and the air inlet 6 is used to connect to the external high-pressure air source.

[0027] When in use, the leak detection quick-connect fixture is fixed to the flange at the water pump interface with the help of the connecting piece, and then a high-pressure air source is introduced into the air inlet 6 of the cylinder body 1. The air source enters the sealing cavity 4 and drives the steel shaft 2 to move axially until the pressing part 3 presses the water pump interface to achieve sealing. At this time, the air tightness detection passage 5 can be used to detect the air tightness. The operation is simple, convenient and fast, and the detection efficiency is effectively improved.

[0028] like Figure 2-Figure 3 As shown, in order to further improve the sealing performance of the pressing part 3, an annular mounting groove 7 is opened on the end face of the pressing part 3, and a sealing gasket 8 adapted thereto is installed in the mounting groove 7. When pressing, the sealing gasket 8 is pressed tightly to improve the sealing performance of the connection; a convex ring 9 is convexly provided on the bottom wall of the mounting groove 7, and a ring groove 10 adapted to the convex ring 9 is opened on the sealing gasket 8. In addition, a retaining ring 11 is convexly provided on the end of the steel shaft 2. The retaining ring 11 is used to prevent the sealing gasket 8 from escaping from the mounting groove 7, thereby improving the installation firmness of the sealing gasket 8. The outer diameter of the retaining ring 11 is adapted to the interface of the water pump, and it can also play a positioning role during installation.

[0029] like Figure 2 and Figure 3As shown, the pressing portion 3 is integrally arranged with the steel shaft 2, and sealing rings 12 are provided at the connection between the pressing portion 3 and the cylinder body 1, and at the connection between the cylinder body 1 and the steel shaft 2. Grooves 13 for installing the sealing rings 12 are provided on the cylinder body 1 and the pressing portion 3. Two grooves 13 are provided on the cylinder body 1 at intervals along the axial direction, which can effectively improve the sealing performance, ensure that the sealing cavity 4 is in a good sealing state, and avoid air leakage at the connection.

[0030] like Figure 2 and Figure 3 As shown, a limiting sleeve 14 is connected to the top of the steel shaft 2, and the limiting sleeve 14 is clamped and fixed to the steel shaft 2. A stroke groove 15 is provided on the top wall of the cylinder body 1 for axial movement of the limiting sleeve 14. When a high-pressure gas source is introduced into the sealing chamber 4, the steel shaft 2 and the pressing part 3 are driven to move axially, driving the limiting sleeve 14 to move synchronously until the bottom end of the limiting sleeve 14 abuts the bottom wall of the stroke groove 15 and cannot move further, thereby limiting the axial movement of the steel shaft 2 and avoiding the situation where the axial movement distance of the steel shaft 2 is too large; in addition, a return spring 16 is provided inside the limiting sleeve 14, and the two ends of the return spring 16 are respectively connected to the limiting sleeve 14 and the cylinder body 1. With the help of the return spring 16, the positions of the limiting sleeve 14 and the steel shaft 2 are axially reset. In this way, after the gas source in the sealing chamber 4 is released, the steel shaft 2 can be reset under the action of the return spring 16, which is convenient for testing the next water pump product.

[0031] like Figure 1 and Figure 4 As shown, the connecting part includes a locking shaft 17 and a locking buckle 18. A through hole 19 for the locking shaft 17 to pass through is provided on both sides of the cylinder body 1. A card slot 20 is provided at the end of the locking shaft 17 to form a clamping portion 21. A socket 22 is formed on one side of the locking buckle 18. The socket 22 is adapted to the clamping portion 21. During installation, the locking buckle 18 can be horizontally inserted into the clamping portion 21. In this way, during actual installation, the locking shaft 17 can be passed through the mounting hole of the water pump flange and then the locking buckle 18 can be clamped. During disassembly, the cylinder body 1 can be removed after removing the locking buckle 18, thereby realizing quick installation and disassembly of the entire fixture, further improving operating efficiency.

[0032] like Figure 1 and Figure 4 As shown, an elastic positioning bead is provided on the inner wall of the lock buckle 18, and a hole 23 for installing the elastic positioning bead is opened on the inner wall of the lock buckle 18. The elastic positioning bead includes a sphere and a spring. The spring drives the sphere to press against the clamping part 21, which can effectively improve the installation firmness of the lock buckle 18 and avoid the situation where the lock buckle 18 is in a vertical state at some installation angles and falls under the action of its own gravity; in addition, a connecting hole 24 is opened on the outer wall of the lock buckle 18, and a screw can be connected at the connecting hole 24. The screw part is located outside the connecting hole 24 to facilitate the hand-held operation of the lock buckle 18.

[0033] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A quick-connect fixture for leak detection of a water pump flange interface, characterized by: The invention comprises a cylinder body (1), wherein a steel shaft (2) is provided in the cylinder body (1), an end of the steel shaft (2) is provided with a pressing portion (3) for pressing against a water pump interface, a sealed cavity (4) is formed between the pressing portion (3) and the cylinder body (1), a connecting piece for connecting to a water pump flange is provided on the cylinder body (1), an airtight detection passage (5) is provided through the steel shaft (2), and the cylinder body (1) has an air inlet (6) connected to the sealed cavity (4).

2. A quick-connect fixture for leak detection of a water pump flange interface according to claim 1, characterized in that: The end surface of the pressing portion (3) is provided with a mounting groove (7), and a sealing gasket (8) cooperating therewith is mounted in the mounting groove (7).

3. A quick-connect fixture for leak detection of a water pump flange interface according to claim 2, characterized in that: A convex ring (9) is convexly provided on the bottom wall of the installation groove (7), and a ring groove (10) adapted to the convex ring (9) is provided on the sealing gasket (8).

4. A quick-connect fixture for leak detection of a water pump flange interface according to claim 2, characterized in that: The end of the steel shaft (2) is provided with an outwardly protruding retaining ring (11), and the retaining ring (11) prevents the sealing gasket (8) from falling out of the mounting groove (7). The retaining ring (11) is adapted to the interface of the water pump.

5. The quick-connect fixture for leak detection of a water pump flange interface according to claim 1, characterized in that: The steel shaft (2) is connected to a limiting sleeve (14), and the limiting sleeve (14) is used to abut against the cylinder body (1) to limit the axial stroke of the steel shaft (2).

6. A quick-connect fixture for leak detection of a water pump flange interface according to claim 5, characterized in that: A reset spring (16) is provided between the limiting sleeve (14) and the cylinder body (1) to connect the two. The reset spring (16) is used to drive the steel shaft (2) to move axially and reset.

7. The quick-connect fixture for leak detection of a water pump flange interface according to claim 1, characterized in that: The connecting piece comprises a locking shaft (17) and a locking buckle (18); the locking shaft (17) is used to pass through the mounting hole on the water pump flange; a clamping groove (20) is provided at the end of the locking shaft (17); and the locking buckle (18) is clamped with the clamping groove (20).

8. The quick-connect fixture for leak detection of a water pump flange interface according to claim 7, characterized in that: A socket (22) is formed through one side of the lock buckle (18), and a clamping portion (21) is formed at a clamping groove (20) provided on the lock shaft (17), and the socket (22) is adapted to the clamping portion (21).

9. A quick-connect fixture for leak detection of a water pump flange interface according to claim 8, characterized in that: The inner wall of the lock buckle (18) is provided with an elastic positioning bead, and the elastic positioning bead is used to press the clamping portion (21).

10. The quick-connect fixture for leak detection of a water pump flange interface according to claim 1, characterized in that: Sealing rings (12) are provided at the connection between the cylinder body (1) and the pressing portion (3), and at the connection between the cylinder body (1) and the steel shaft (2).

Images