Water pump air tightness testing device

Abstract

The utility model discloses a water pump air tightness testing device, which comprises a sealing mechanism, a pressurizing mechanism and a limiting mechanism, and is characterized in that the sealing mechanism comprises a sealing pool, a clamping piece connected to the bottom of an inner cavity of the sealing pool, and a middle bracket fixed in the middle of the inner cavity of the sealing pool; the pressurizing mechanism comprises side supporting blocks installed on the two sides of the outer portion of the sealing pool and supporting rods installed on the side supporting blocks. According to the utility model, the water pump is sealed by the sealing plate and is semi-suspended in the sealing pool, so that the influence of the inner wall of the sealing pool on detection is avoided, the detection is more comprehensive, meanwhile, the pressure of the inner cavity of the sealing pool is increased by the downward pressing of the downward pressing plate, and the pressure in the sealing pool is continuously monitored by the pressure gauge; the water pump airtightness detection device is simple in structure, can detect any water pump by only placing a module with the same volume as the water pump into the sealing pool for pressure change calibration before use, is wide in application range, and improves the practicability of the device.

Description

Technical Field

[0001] The utility model relates to the technical field of water pump air tightness detection, in particular to a water pump air tightness testing device. Background Art

[0002] At present, in the test process of the general air tightness test platform, the pump body needs to be placed vertically on the tooling, the inlet and outlet of the water pump are plugged with plugs, the plugs are supported with pliers, an air inlet pipe is inserted into the inlet plug, and the inlet is inflated with an air pump or an air source to pass 0.4MPa compressed gas and ensure sealing, the water pump body and pump cover are immersed in water, the pressure is maintained for 2 minutes, and whether there are bubbles coming out is observed, the gas pressure leakage should not be greater than 120Pa, and it has no effect on the performance of the water pump. This method is time-consuming and labor-intensive, and different methods need to be adopted for different water pumps, which is very troublesome. Therefore, a water pump air tightness test device is proposed. Utility Model Content

[0003] The utility model aims to solve one of the technical problems existing in the prior art or related technology.

[0004] To this end, the technical solution adopted in this utility model is:

[0005] A water pump air tightness testing device comprises a sealing mechanism, a boosting mechanism and a limiting mechanism, wherein the sealing mechanism comprises a sealing pool, a clamp connected to the bottom of an inner cavity of the sealing pool, and a middle bracket fixed to the middle of the inner cavity of the sealing pool, the boosting mechanism comprises side support blocks installed on both sides of the outside of the sealing pool, support rods installed on the side support blocks, a top plate connected to the top of the support rods, a motor assembled in the middle of the top plate, and a screw connected to an output end of the motor, the limiting mechanism comprises a threaded sleeve threadedly connected to the screw, connecting brackets connected to both sides of the threaded sleeve, and a lower pressure plate fixed to the bottom end of the connecting bracket, wherein the side of the lower pressure plate is attached to the inner wall of the sealing pool.

[0006] Preferably, a telescopic rod is fixedly installed in the middle of the inner side of the clamp, the top of the telescopic rod is connected to a sealing plate, and the inner side of the clamp located on both sides of the telescopic rod is slidably connected to a limit rod, and the end of the limit rod is connected to the side of the sealing plate close to the telescopic rod.

[0007] Preferably, a support plate is installed at the bottom of the inner side of the sealing plate, and a silicone sealing pad is provided on the inner side of the sealing plate.

[0008] Preferably, a groove fitting the screw is provided in the middle of the lower pressing plate, and a sealing ring is installed on the side of the top of the lower pressing plate.

[0009] Preferably, a pressure gauge penetrating into the inner cavity of the sealing pool is installed on the side of the top of the lower pressure plate, and limiting rings are installed on both sides of the lower pressure plate, and the top of the limiting ring is slidably connected to the support rod.

[0010] By adopting the above technical solution, the beneficial effects achieved by the utility model are as follows:

[0011] In the utility model, the water pump is sealed by a sealing plate and semi-suspended inside the sealing pool, which avoids the influence of the inner wall of the sealing pool on the detection and makes the detection more comprehensive. At the same time, the lower pressure plate is used to press down to increase the pressure in the inner cavity of the sealing pool, and the pressure inside the sealing pool is continuously monitored by a pressure gauge, so that the air tightness of the water pump can be judged according to the pressure change. The structure is simple, and it only needs to put a module of the same volume as the water pump into the sealing pool for pressure change calibration before use, so that any water pump can be detected, the use range is wide, and the practicability of the device is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 A cross-sectional schematic diagram of an embodiment of the utility model;

[0013] Figure 2 It is a front view schematic diagram of an embodiment of the utility model.

[0014] Reference numerals:

[0015] 110, sealing tank; 120, clamping member; 121, telescopic rod; 122, limiting rod; 123, sealing plate; 130, middle bracket;

[0016] 210, side support block; 220, support rod; 230, top plate; 240, motor; 250, screw;

[0017] 310, lower pressure plate; 311, pressure gauge; 312, sealing ring; 320, connecting bracket; 330, threaded sleeve; 340, limiting ring. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be noted that the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

[0019] A water pump air tightness testing device provided by some embodiments of the utility model is described below in conjunction with the accompanying drawings. Embodiment 1

[0020] Combination Figure 1-2As shown, a water pump air tightness testing device provided by the utility model includes a sealing mechanism, a boosting mechanism and a limiting mechanism, the sealing mechanism includes a sealing pool 110, a clamping member 120 connected to the bottom of the inner cavity of the sealing pool 110, and a middle bracket 130 fixed to the middle part of the inner cavity of the sealing pool 110, a telescopic rod 121 is fixedly installed in the middle of the inner side of the clamping member 120, a sealing plate 123 is connected to the top of the telescopic rod 121, and a limiting rod 122 is slidably connected to the inner side of the clamping member 120 at positions on both sides of the telescopic rod 121, and the end of the limiting rod 122 is connected to a side of the sealing plate 123 close to the telescopic rod 121, a support plate is installed at the bottom of the inner side of the sealing plate 123, and a silicone sealing pad is arranged on the inner side of the sealing plate 123, the boosting mechanism includes side support blocks 210 installed on both sides of the outside of the sealing pool 110, and side support blocks 210 installed on the side support blocks 210. The support rod 220 on the block 210, the top plate 230 connected to the top of the support rod 220, the motor 240 assembled in the middle of the top plate 230, and the screw 250 connected to the output end of the motor 240. The limiting mechanism includes a threaded sleeve 330 threadedly connected to the screw 250, a connecting bracket 320 connected on both sides of the threaded sleeve 330, and a lower pressure plate 310 fixed to the bottom end of the connecting bracket 320. The side of the lower pressure plate 310 is attached to the inner wall of the sealing pool 110. A groove that fits the screw 250 is provided in the middle of the lower pressure plate 310, and a sealing ring 312 is installed on the side of the top of the lower pressure plate 310. A pressure gauge 311 that penetrates into the inner cavity of the sealing pool 110 is installed on the side of the top of the lower pressure plate 310, and limiting rings 340 are installed on both sides of the lower pressure plate 310. The top of the limiting ring 340 is slidably connected to the support rod 220.

[0021] Specifically, the lower pressure plate 310 is attached to the inner wall of the sealing pool 110 to form a sealing condition. At the same time, in order to further ensure the sealing, a sealing ring 312 is provided on the side of the lower pressure plate 310 to enhance the sealing. Therefore, when the lower pressure plate 310 is pressed down, the internal gas will be compressed, the air pressure will increase, and the digital display on the instrument panel of the pressure gauge 311 will continue to increase. If the air tightness of the water pump is not good, the gas will enter the water pump, resulting in a decrease in air pressure, or when the lower pressure plate 310 is pressed down, the air pressure does not increase. This situation indicates that the air tightness is unqualified. The detection is simple and convenient, and qualified products can be quickly screened out, thereby improving the working efficiency of the device.

[0022] The working principle and use process of the utility model are as follows: first, the device is placed at the desired position, and then the water pump to be tested is placed on the middle bracket 130, and the telescopic rod 121 is used to drive the sealing plate 123 to push inward, and the support plate thereon is used to simply support the water pump, and when the silicone sealing pad on the inner side of the sealing plate 123 contacts the water pump, its water inlet and outlet are sealed, so that the inside of the water pump forms a whole, and the sealing of the water flow pipeline of the water pump is detected, or the water inlet and outlet of the water pump are not sealed, and the airtightness of the water pump electronic component chamber is detected. At this time, the motor 240 is used to drive the screw 250 to rotate, and the threaded sleeve 330 engaged with the screw 250 will slowly decrease as the screw 250 rotates, so the lower pressure plate 310 will alternately press down, so that the pressure inside the sealing pool 110 slowly increases, and the pressure gauge 311 is used to try to monitor the pressure change. When the pressure becomes smaller, it means that there is a problem with the airtightness of the water pump. A steady increase in pressure means that the airtightness is qualified. Finally, the device can be regularly checked for sealing.

[0023] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A water pump air tightness test device, characterized in that: It includes a sealing mechanism, a pressurizing mechanism and a limiting mechanism; The sealing mechanism comprises a sealing pool (110), a clamping member (120) connected to the bottom of the inner cavity of the sealing pool (110), and a middle bracket (130) fixed to the middle of the inner cavity of the sealing pool (110); The pressurizing mechanism comprises side support blocks (210) mounted on both sides of the outside of the sealing pool (110), support rods (220) mounted on the side support blocks (210), a top plate (230) connected to the top ends of the support rods (220), a motor (240) mounted in the middle of the top plate (230), and a screw rod (250) connected to the output end of the motor (240); The limiting mechanism comprises a threaded sleeve (330) threadedly connected to the screw rod (250), a connecting bracket (320) connected to both sides of the threaded sleeve (330), and a lower pressing plate (310) fixed to the bottom end of the connecting bracket (320), wherein the side of the lower pressing plate (310) is attached to the inner wall of the sealing pool (110).

2. A water pump air tightness testing device according to claim 1, characterized in that: A telescopic rod (121) is fixedly mounted in the middle of the inner side of the clamping member (120), the top end of the telescopic rod (121) is connected to a sealing plate (123), and the inner side of the clamping member (120) is slidably connected to a limit rod (122) at positions on both sides of the telescopic rod (121), and the end of the limit rod (122) is connected to a side of the sealing plate (123) close to the telescopic rod (121).

3. A water pump air tightness testing device according to claim 2, characterized in that: A support plate is installed at the bottom of the inner side of the sealing plate (123), and a silicone sealing pad is arranged on the inner side of the sealing plate (123).

4. A water pump air tightness testing device according to claim 1, characterized in that: A groove that fits the screw rod (250) is provided in the middle of the lower pressing plate (310), and a sealing ring (312) is installed on the side edge of the top of the lower pressing plate (310).

5. A water pump air tightness testing device according to claim 1, characterized in that: A pressure gauge (311) penetrating into the inner cavity of the sealing pool (110) is installed on the side of the top of the lower pressure plate (310), and limit rings (340) are installed on both sides of the lower pressure plate (310), and the top of the limit ring (340) is slidably connected to the support rod (220).

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