Simple airtight test bench

Abstract

The utility model relates to a simple airtight test bench, which comprises a water tank, an air valve, a water pipe, a water pump tool and a variable frequency motor, the air valve is arranged on the water tank, the water pump tool is connected with the water tank through the water pipe, a water pump to be tested is arranged on the water pump tool, and the water pump to be tested is connected with the variable frequency motor. The test method is optimized, a more accurate test result is obtained, more accurate reason analysis can be carried out on a returned piece, and a product is better improved to avoid subsequent quality problems.

Description

Technical Field

[0001] The utility model relates to a test bench, in particular to a simple airtight test bench. Background Art

[0002] Water pump sealing failure is a common problem. After a faulty pump is returned to the factory, it is typically subjected to airtightness verification and fault analysis. Currently, verifying the leak status of returned pumps is done manually by back-blowing the pump drain holes with an air gun. This method fails to simulate the actual operating conditions of the pump, making it an unreasonable and inconsistent method, resulting in inaccurate test results. Summary of the Invention

[0003] The technical problem to be solved by the utility model is: a simple airtightness test bench that changes the existing verification method and can simulate the actual working conditions of a water pump for verification.

[0004] The technical solution to the above technical problem is a simple airtightness test bench, comprising a water tank, an air valve, a water pipe, a water pump fixture, and a variable frequency motor. The air valve is mounted on the water tank, the water pump fixture is connected to the water tank via a water pipe, the water pump to be tested is mounted on the water pump fixture, and the water pump to be tested is connected to the variable frequency motor via a pulley. The variable frequency motor is connected to a frequency converter.

[0005] A further technical solution of the utility model is that the water pump fixture is a mounting plate, the mounting plate is provided with a water inlet, a water outlet and mounting screw holes, and a rib plate is provided on the mounting plate.

[0006] The water pipe is provided with an inlet valve and an outlet valve, and the inlet valve and the outlet valve are respectively located on both sides of the water pump tooling.

[0007] Due to the adoption of the above technical solution, the simplified airtight test bench of the utility model has the following beneficial effects:

[0008] The test pump in this utility model is mounted on a water pump fixture and connected to a water tank. The test pump is connected to a variable frequency motor for rotation, and the pump is pressurized via an air valve. The joints of the pump are then observed for leaks. This utility model optimizes the test method, resulting in more accurate test results. This allows for more accurate analysis of the causes of returned parts, enabling better product improvements to avoid subsequent quality issues. This utility model changes existing verification methods, simulating actual operating conditions for verification. This makes the test method more scientific and reasonable, and can produce accurate test results.

[0009] The technical features of a simplified airtight test bench of the present invention will be further described below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1: A structural diagram of a simple airtight test bench.

[0011] Figure 2 : Schematic diagram of the structure of the water pump tooling.

[0012] In the above drawings, the descriptions of the reference numerals are as follows:

[0013] 1-water tank, 2-air valve, 3-water inlet valve, 4-water pipe, 5-water pump tooling, 6-water pump, 7-water outlet valve, 8-frequency conversion motor, 9-frequency converter, 10-mounting plate, 11-water inlet pipe, 12-water outlet pipe, 13-rib plate, 14-bottom plate, 15-water pump pulley. DETAILED DESCRIPTION

[0014] A simple airtightness test bench includes a water tank, an air valve, a water pipe, a water pump fixture, and a variable frequency motor. The air valve is mounted on the water tank and connected to the water tank, which is filled with water. The water pump fixture is connected to the water tank via a water pipe. The water pump to be tested is mounted on the water pump fixture and connected to the variable frequency motor. The variable frequency motor is connected to a frequency converter. The pulley on the variable frequency motor is connected to the pulley of the frequency converter via a belt. The water pipe is equipped with an inlet valve and an outlet valve, respectively, located on either side of the water pump fixture. During testing, the water pump is first mounted on the test fixture, the inlet and outlet valves are opened, and the motor is driven by the frequency converter to start the water pump. The air valve is then used to pressurize the water pump, and the joints of the water pump are observed for leaks.

[0015] The pump fixture consists of a mounting plate with an inlet, outlet, and mounting screw holes. The inlet and outlet are connected to the inlet and outlet pipes, respectively, via bolts. During operation, the pump to be tested is mounted to the mounting plate using the mounting bolts. The inlet and outlet on the mounting plate are connected to the water tank via water pipes. The mounting plate is also provided with a ribbed plate for reinforcement. The mounting plate is bolted to the floor or workbench base, and the ribbed plate is connected to the mounting plate and base plate via bolts.

[0016] Working Principle: First, secure the water pump to be verified on the fixture 5, connect the water pipe 4, and then open the water inlet valve 3 and the water outlet valve 7. Then, use the frequency converter 9 to control the motor 8 to drive the water pump 6 to the rated speed. Then, use the air valve 2 to pressurize the water pump. This will allow the water pump's sealing to be verified under conditions that simulate the pump's actual operating conditions. During the test, simply check to see if there is any water leakage from the pump.

Claims

1. A simple airtight test bench, characterized by: It includes a water tank, an air valve, a water pipe, a water pump tooling and a frequency conversion motor. The air valve is set on the water tank. The water pump tooling is connected to the water tank through a water pipe. The water pump to be tested is set on the water pump tooling, and the water pump to be tested is connected to the frequency conversion motor.

2. A simplified airtight test bench according to claim 1, characterized in that: The water pump tooling is a mounting plate, which is provided with a water inlet, a water outlet and mounting screw holes.

3. A simplified airtight test bench according to claim 2, characterized in that: The mounting plate is provided with a rib plate.

4. The simplified airtight test bench according to claim 1, characterized in that: The water pipe is provided with an inlet valve and an outlet valve, and the inlet valve and the outlet valve are respectively located on both sides of the water pump tooling.

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