Metal casting leakage testing device

Abstract

The utility model discloses a metal casting leakage testing device which comprises a testing pipe, a pressure tester is installed on the front side of the testing pipe in a sealed mode, a limiting pipe is installed at the top end of the testing pipe in a communicated mode, a detachable connecting sleeve head is installed on the upper portion of the limiting pipe in a sealed mode, and the two ends of the testing pipe are respectively connected with a set of ball valves. And a positioning frame is rotationally installed on the outer side of the testing pipe, a bolt is installed in the middle of the positioning frame in a threaded mode, and an abutting plate is fixedly installed at the bottom end of the bolt. The positioning frame can rotate, the convenience of connection of the metal casting and the detachable connecting sleeve head can be guaranteed, meanwhile, in the rotating process of the positioning frame, the positioning frame is limited through cooperation of the positioning column and the two sets of positioning holes, the abutting plate stably corresponds to the metal casting when rotating and pressing downwards, the metal casting and the detachable connecting sleeve head are completely attached, and the service life of the metal casting is prolonged. And the device can better adapt to different metal castings through the detachable connecting sleeve head capable of being detached and changing specifications and the abutting plate, and the use efficiency of the device is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of metal leakage detection, in particular to a metal casting leakage test device. Background Technique

[0002] A water pump is a machine for transporting liquids or increasing the pressure of liquids, which is widely used in daily life and work; in the structure of a water pump, there is a pump cover metal casting, which mainly plays a sealing role. The produced pump cover needs to be subjected to a leakage test to ensure its proper function during use.

[0003] According to the authorized publication number CN220542336U, a metal casting leakage test device is disclosed, including a test box. An installation mechanism is arranged at the upper end of the test box, and the installation mechanism is used for fixedly installing the pump cover. The installation mechanism includes an installation seat, and the upper surface of the installation seat shrinks inward in a stepped shape; a pressing mechanism is arranged at the upper end of the installation mechanism, and the pressing mechanism is used for pressing and fixing between the pump cover and the installation seat. The pressing mechanism includes a first pressing plate, and the upper end of the first pressing plate is movably connected to the lower end of a first threaded rod. By adopting a stepped inwardly shrinking installation seat and being able to adjust the extrusion position of the first pressing plate according to the size of the pump cover, so as to adapt to pump covers of various specifications, the technical problem of poor adaptability to pump covers of various specifications is solved, which is more practical and suitable for wide promotion and use.

[0004] During the use of the above patent, it is impossible to continuously pressurize the sealed position of the casting to detect the sealing performance of the casting for the structure. Therefore, a metal casting leakage test device is needed now. Content of the Utility Model

[0005] The purpose of the utility model is to provide a metal casting leakage test device, by setting a pressure tester to monitor the internal pressure of the test tube. When the pressure changes, it can be determined that the sealing performance of the metal casting is poor, so as to solve the technical problems mentioned in the background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: a metal casting leakage test device, including a test tube, a pressure tester is hermetically installed on the front side of the test tube, a limiting tube is communicated and installed at the top end of the test tube, a detachable connecting sleeve is hermetically installed on the upper part of the limiting tube, and a group of ball valves are respectively connected to both ends of the test tube;

[0007] A positioning frame is rotatably installed on the outer side of the test tube, a bolt is threadedly installed in the middle of the positioning frame, and a pressing plate is fixedly installed at the bottom end of the bolt.

[0008] Preferably, a positioning seat is fixedly installed at the bottom of the test tube, and two groups of annular grooves are symmetrically arranged on the outer arc surface of the test tube, and the opening angle of each group of annular grooves is 90 degrees.

[0009] Preferably, a sliding groove is arranged inside each group of annular grooves, and a positioning hole is arranged at each end of each group of sliding grooves.

[0010] Preferably, a connecting pipe is hermetically installed at each end of the test tube, and two ball valves are hermetically connected to the corresponding connecting pipes on each side respectively. One ball valve is hermetically connected to the water injection pipe, and the other ball valve is hermetically connected to the drain pipe.

[0011] Preferably, a ring sleeve is rotatably sleeved inside each of the two groups of annular grooves. Both ends of the positioning frame are fixedly connected to the ring sleeve. A threaded pipe is installed through the center of the positioning frame, and the bolt is threadedly installed inside the threaded pipe.

[0012] Preferably, a limiting groove is arranged inside the positioning frame, a supporting spring is fixedly installed inside the limiting groove, a limiting plate is fixedly installed at the end of the supporting spring, and a positioning column is fixedly installed at the bottom end of the limiting plate.

[0013] Preferably, the positioning column penetrates and extends out of the ring sleeve, the positioning column is movably clamped into the positioning hole, and the positioning column slides and fits against the inner wall of the sliding groove to rotate.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] 1. By arranging the ring sleeve to limit the positioning frame, the positioning frame can rotate, which can ensure the convenience of connecting the metal casting with the detachable connecting socket. At the same time, during the rotation of the positioning frame, the positioning frame is limited by the cooperation of the positioning column and the two positioning holes, so that when the pressing plate rotates and presses down, it can stably correspond to the metal casting, making the metal casting fit perfectly with the detachable connecting socket. The detachable connecting socket with detachable and replaceable specifications and the pressing plate can better make the device adapt to different metal castings, greatly improving the use efficiency of the device.

[0016] 2. By continuously injecting liquid at one end of the test tube, the pressure inside the test tube is maintained at a certain value. The direct pressure feedback is carried out through the pressure tester, and the pressure inside the test tube is maintained for a period of time. Observe the pressure change of the pressure tester. By the pressurized test method, the problem of undetected sealing caused by slight liquid leakage during the long-term use of the metal casting can be avoided. During the detection process, the change of the pressure tester can intuitively express the problem of unqualified sealing of the metal casting, reducing the test difficulty. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the present utility model;

[0018] Figure 2 Schematic diagram of the installation structure of the positioning frame of the present utility model;

[0019] Figure 3 Exploded schematic diagram of the installation structure of the positioning frame of the present utility model;

[0020] Figure 4 Schematic diagram of the installation structure of the positioning column of the present utility model.

[0021] In the figure: 1, test tube; 2, pressure tester; 3, limit tube; 4, detachable connecting socket; 5, positioning seat; 6, annular groove; 7, sliding groove; 8, positioning hole; 9, connecting tube; 10, ball valve; 11, annular sleeve; 12, positioning frame; 13, threaded tube; 14, bolt; 15, abutting plate; 16, limit groove; 17, support spring; 18, limit plate; 19, positioning column. Specific implementation manner

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0023] The present utility model provides: a metal casting leakage testing device, as Figures 1-4 shown, including a test tube 1, a pressure tester 2 is sealed and installed on the front side of the test tube 1, a limit tube 3 is connected and installed at the top of the test tube 1, a detachable connecting socket 4 is sealed and installed on the upper part of the limit tube 3, and a group of ball valves 10 are respectively connected to both ends of the test tube 1; a positioning frame 12 is rotatably installed on the outer side of the test tube 1, a bolt 14 is threadedly installed in the middle of the positioning frame 12, and an abutting plate 15 is fixedly installed at the bottom end of the bolt 14.

[0024] Preferably, a positioning seat 5 is fixedly installed at the bottom of the test tube 1. Two groups of annular grooves 6 are symmetrically arranged on the outer arc surface of the test tube 1 from left to right. The opening angle of each group of annular grooves 6 is 90 degrees. A pressure tester 2 installed on the front side of the test tube 1 is used to monitor the change of the internal hydraulic pressure of the test tube 1 in real time. When the pressure decreases, it can be determined that the sealing performance of the metal casting is poor and liquid leakage will occur. The limiting tube 3 installed through the upper part of the test tube 1 limits the detachable connecting socket 4, and the detachable connecting socket 4 can be disassembled and selected, so that the detachable connecting socket 4 can better match metal castings of different specifications to meet the sealing performance of the detachable connecting socket 4, greatly improving the safety and stability of the overall working test of the device. The positioning seat 5 installed at the bottom of the test tube 1 is used to balance the device, prevent the device from moving during the test, resulting in problems with the test structure, and improve the stability of the test for metal castings.

[0025] Furthermore, a sliding groove 7 is arranged inside each group of annular grooves 6, and a positioning hole 8 is arranged at each end of each group of sliding grooves 7. The annular grooves 6 arranged on the outer arc surface of the test tube 1 limit the annular sleeve 11, enabling the positioning frame 12 to rotate, and thus better moving the positioning frame 12, making it more convenient for the device to install the detachable connecting socket 4 and the metal component. And through the rotation of the positioning frame 12, the pressing plate 15 can be pressed against the metal casting to meet the limitation of the metal casting.

[0026] Even further, a connecting tube 9 is hermetically installed at each end of the test tube 1. Two ball valves 10 are respectively hermetically connected to the corresponding connecting tubes 9 on each side. One ball valve 10 is hermetically connected to the water injection pipe, and the other ball valve 10 is hermetically connected to the drain pipe. The connecting tubes 9 installed at both ends of the test tube 1 limit the ball valves 10. The ball valves 10 can be used to lock the liquid input and output to continuously control the internal pressure of the test tube 1, enabling the metal casting to be continuously pressure-tested to test the sealing performance of the metal casting and test for leakage.

[0027] It should be noted that an annular sleeve 11 is rotatably sleeved and installed inside each of the two groups of annular grooves 6. Both ends of the positioning frame 12 are fixedly connected to the annular sleeve 11. A threaded tube 13 is installed through the center of the positioning frame 12. The bolt 14 is threadedly installed inside the threaded tube 13. The provided annular sleeve 11 limits the positioning frame 12, enabling the positioning frame 12 to rotate by 90 degrees. The threaded tube 13 installed through the center of the positioning frame 12 limits the bolt 14. By rotating the bolt 14, the pressing plate 15 can be rotated downward to press against the metal casting, enabling the metal component to be tightly connected to the detachable connecting socket 4. When the pressure still changes during the pressing process, it can be determined that the sealing line of the metal casting is not good.

[0028] Specifically, a limiting groove 16 is formed inside the positioning frame 12. A set of support springs 17 are fixedly installed inside the limiting groove 16. A limiting plate 18 is fixedly installed at the end of the support springs 17. A positioning post 19 is fixedly installed at the bottom end of the limiting plate 18. The limiting groove 16 formed inside the positioning frame 12 limits the support springs 17. The support springs 17 apply a continuous outward thrust to the limiting plate 18 and thus to the positioning post 19, enabling the positioning post 19 to stably engage inside the positioning hole 8 to complete the positioning of the positioning frame 12. The limiting plate 18 fits against the inner wall of the limiting groove 16 to prevent the support springs 17 from deforming and causing the positioning post 19 to fail to reset.

[0029] In addition, the positioning post 19 passes through and extends out from inside the annular sleeve 11. The positioning post 19 is movably engaged inside the positioning hole 8. The positioning post 19 slides and fits against the inner wall of the sliding groove 7 and rotates. When the positioning frame 12 is rotated by an external force, the positioning post 19 slides inside the sliding groove 7 until the positioning post 19 engages inside the positioning hole 8 to complete the positioning.

[0030] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A metal casting leakage testing device, characterized in that: The test tube (1) comprises a pressure tester (2) which is sealed and installed on the front side of the test tube (1); a limit tube (3) is installed on the top end of the test tube (1); a detachable connection sleeve (4) is sealed and installed on the upper part of the limit tube (3); and a set of ball valves (10) are respectively connected to both ends of the test tube (1); A positioning frame (12) is rotatably mounted on the outer side of the test tube (1), a bolt (14) is threadedly mounted on the middle of the positioning frame (12), and a stop plate (15) is fixedly mounted on the bottom end of the bolt (14).

2. A metal casting leakage testing device according to claim 1, characterized in that: A positioning seat (5) is fixedly mounted on the bottom of the test tube (1), and two groups of annular grooves (6) are symmetrically opened on the outer arc surface of the test tube (1), and the opening angle of each group of annular grooves (6) is 90 degrees.

3. A metal casting leakage testing device according to claim 2, characterized in that: A group of slide grooves (7) is provided inside each group of the annular grooves (6), and a group of positioning holes (8) are respectively provided at both ends of each group of the slide grooves (7).

4. A metal casting leakage testing device according to claim 3, characterized in that: A group of connecting pipes (9) are respectively installed in a sealed manner at both ends of the test tube (1), and two groups of ball valves (10) are respectively sealed and connected to the corresponding side connecting pipes (9), one group of ball valves (10) is sealed and connected to the water injection pipe, and the other group of ball valves (10) is sealed and connected to the drainage pipe.

5. A metal casting leakage testing device according to claim 4, characterized in that: A group of annular sleeves (11) are rotatably sleeved inside the two groups of annular grooves (6), and the two ends of the positioning frame (12) are respectively fixedly connected to the annular sleeves (11). A threaded pipe (13) is installed through the center of the positioning frame (12), and the bolt (14) is threadedly installed inside the threaded pipe (13).

6. A metal casting leakage testing device according to claim 5, characterized in that: A limiting groove (16) is provided inside the positioning frame (12), a group of supporting springs (17) are fixedly installed inside the limiting groove (16), a limiting plate (18) is fixedly installed at the end of the supporting spring (17), and a positioning column (19) is fixedly installed at the bottom end of the limiting plate (18).

7. A metal casting leakage testing device according to claim 6, characterized in that: The positioning column (19) extends through the inside of the annular sleeve (11), and the positioning column (19) is movably inserted into the inside of the positioning hole (8). The positioning column (19) slides and fits the inner wall of the sliding groove (7) to rotate.

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