Air tightness detection equipment for pump head of cooling water pump

Abstract

The utility model discloses a cooling water pump head air tightness detection device comprising a workbench, the workbench is provided with an air suction area, the air suction area is covered with a first sealing gasket, the middle position of the air suction area is provided with an air suction hole, the air suction hole is provided with an air suction nozzle, and the lower end of the air suction nozzle is connected with an air suction pump through a hose. The upper end of the air suction nozzle upwards penetrates through the first sealing gasket and is exposed out of the workbench, a flexible rod and a flexible pipe are further arranged on the workbench, one end of the flexible rod is fixed to the workbench, a second sealing gasket is fixed to the other end of the flexible rod, and one end of the flexible pipe is fixed to the workbench and penetrates through the workbench to be connected with an air pump. A first sealing gasket is fixed at one end of the working table, a second sealing gasket is fixed at the other end of the working table, a third sealing gasket is fixed at the other end of the working table, an air bag is arranged on the sealing gasket and communicated with the flexible pipe, and a barometer is further arranged on the working table and used for monitoring the air pressure of the sucking pump.

Description

Technical Field

[0001] The utility model relates to the field of automobile parts processing auxiliary equipment, in particular to a cooling water pump head air tightness detection device. Background Art

[0002] The engine cooling water pump is the heart of the automobile engine cooling system and the main component for transporting cooling water in the automobile engine closed-loop cooling system. Its function is to increase the working pressure of the coolant in the circulation system, maintain the coolant circulation between the engine-related components, and prevent the engine from running at too high an temperature. Its performance not only affects the power and economy of the automobile, but also affects the life of the entire machine.

[0003] According to the supporting requirements and working conditions of different types of automobiles, there are many types of engine cooling water pumps, such as centrifugal pumps, vortex pumps and rotary positive displacement pumps. All water pumps have extremely high requirements for the air tightness of the pump head. Air tightness testing is an important step for the safe and stable operation of the water pump. Air tightness testing can detect cracks in the pump head, sealing defects in component assembly and other problems to ensure that there will be no water leakage during operation.

[0004] But the shapes of various water pump heads are different, and most of them are special shapes (such as Figure 4 As shown), the air tightness test of the pump head is mostly completed by manually holding the sealing plate and the vacuum tube, which is time-consuming, labor-intensive and inefficient. Sometimes there are pump heads with more than two openings, and it is difficult to operate with both hands during the test, which is prone to errors. This is an existing problem. Utility Model Content

[0005] In order to make up for the deficiencies of the prior art, the utility model provides a cooling water pump head air tightness detection device to assist manual air tightness detection to improve the above-mentioned problems.

[0006] The utility model is realized through the following technical solutions:

[0007] A cooling water pump head air tightness detection device comprises a workbench, characterized in that: an air extraction zone is provided on the workbench, the air extraction zone is covered with a first sealing gasket, an air extraction hole is opened in the middle position of the air extraction zone, an air extraction nozzle is provided on the air extraction hole, the lower end of the air extraction nozzle is connected to the air extraction pump through a hose, the upper end of the air extraction nozzle passes through the first sealing gasket upward to expose the workbench, a flexible rod and a flexible tube are also provided on the workbench, one end of the flexible rod is fixed on the workbench, and the other end is fixed with a second sealing gasket, one end of the flexible tube is fixed on the workbench and passes through the workbench to be connected with an air pump, and the other end is fixed with a third sealing gasket, an air bag is provided on the third sealing gasket, and the air bag is connected with the flexible tube, and a pressure gauge is also provided on the workbench, and the pressure gauge is used to monitor the air pressure of the air extraction pump.

[0008] For further optimization, the exhaust zone is slightly lower than the surface of the workbench, a sealing groove is provided on the exhaust zone, a sealing frame matching the sealing groove is provided at the bottom of the first sealing gasket, the first sealing gasket cover is arranged on the exhaust zone, and the top surface of the first sealing gasket is slightly higher than the surface of the workbench.

[0009] Further optimized, a second support plate is fixed to the other end of the flexible rod, and the second sealing gasket is bonded to the support plate.

[0010] Further optimized, a third support plate is fixed to the other end of the flexible tube, and the third sealing gasket is adhered to the support plate.

[0011] In a further optimized manner, the flexible rod and the flexible tube are provided with rubber handles.

[0012] For further optimization, an air pump switch is provided on one side of the rubber handle on the flexible tube to control the inflation and deflation of the airbag, and an air pump switch is provided on one side of the rubber handle on the flexible rod to control the air pump to start and stop deflation.

[0013] The beneficial effects of the utility model are:

[0014] This equipment assists manual testing of the pump head for air tightness. It is simple to operate and has high testing efficiency for common two-opening pump heads. A single person can complete the testing of three-opening and multi-opening pump heads. The other openings are sealed by the airbag and the third sealing pad. The sealing effect is good. Hold the pump head with one hand, bend the flexible rod with the other hand, use the second sealing pad to cover one opening, and press the vacuum pump switch to test at the same time. It is easy to use and does not require other clamping tooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the utility model before working.

[0016] Figure 2 It is a cross-sectional schematic diagram of the workbench in the utility model.

[0017] Figure 3 It is a three-dimensional structural schematic diagram of the utility model.

[0018] Figure 4 Schematic diagram of a three-way pump head.

[0019] In the figure: 1. workbench; 2. vacuum zone; 3. pressure gauge; 4. first sealing gasket; 5. vacuum hole; 51. vacuum nozzle; 52. vacuum pump; 6. flexible rod; 61. second support plate; 62. second sealing gasket; 63. vacuum pump switch; 7. flexible tube; 71. third support plate; 72. third sealing plate; 73. air pump switch; 74. air bag; 8. rubber handle; 10. pump head. DETAILED DESCRIPTION

[0020] In order to clearly illustrate the technical features of the present solution, the present invention is described in detail below through specific implementation methods and in combination with the accompanying drawings. In the description of the present invention, it should be noted that the terms "left", "right", "front", "back", "inside", "outside" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0021] like Figure 1-Figure 4 As shown, the utility model provides an air tightness detection device for a cooling water pump head, comprising a workbench 1, on which is provided an air extraction area 2, which is covered with a first sealing gasket 4, a suction hole 5 is opened in the middle of the air extraction area 2, and a suction nozzle 51 is provided on the air extraction hole, the lower end of the suction nozzle is connected to an air extraction pump 52 through a hose, and the upper end of the suction nozzle 52 passes through the first sealing gasket 4 upward to expose the workbench.

[0022] The workbench is also provided with a flexible rod 6 and a flexible tube 7, one end of the flexible rod 6 is fixed on the workbench, and the other end is fixed with a second sealing pad 62, one end of the flexible tube 7 is fixed on the workbench 1, and passes through the workbench to be connected with an air pump 75, and the other end is fixed with a third sealing pad 72, an air bag 74 is provided on the third sealing pad, and the air bag is connected with the flexible tube 7, wherein the diameter of the flexible rod is less than 8 mm, and the diameter of the flexible tube is less than 10 mm, and the flexible rod and the flexible tube do not affect the operator's arbitrary bending.

[0023] The workbench 1 is also provided with a pressure gauge 3, which is used to monitor the air pressure of the vacuum pump 52. When working, one opening of the pump head covers the vacuum nozzle, and the second sealing pad and the air bag are used to block the other openings of the pump head. The vacuum pump is turned on, and the pressure gauge 3 can be used to detect whether the pump head is leaking.

[0024] As a preferred embodiment, Figure 2 As shown, the vacuum zone 2 is slightly lower than the surface of the workbench 1, a sealing groove is opened on the vacuum zone 2, a sealing frame 41 adapted to the sealing groove is provided at the bottom of the first sealing gasket 4, the first sealing gasket 4 is covered on the vacuum zone, the top surface of the first sealing gasket 4 is slightly higher than the surface of the workbench 1, the first sealing gasket 4 is directly covered on the vacuum zone to facilitate the replacement of the first sealing gasket and avoid long-term wear affecting the air tightness, and the sealing groove and the sealing frame cooperate to avoid air leakage.

[0025] As a preferred embodiment, a second support plate 61 is fixed to the other end of the flexible rod 6, and the second sealing gasket 62 is bonded to the support plate. A third support plate 71 is fixed to the other end of the flexible tube 7, and the third sealing gasket 72 is bonded to the support plate 71. The second support plate and the flexible rod, the third support plate and the flexible tube can be threadedly fixed to facilitate the subsequent replacement of the sealing gasket.

[0026] As a preferred embodiment, the flexible rod 6 and the flexible tube 7 are provided with a rubber handle 8 for easy operation. An air pump switch 73 is provided on one side of the rubber handle 8 on the flexible tube 7 for controlling the inflation and deflation of the air bag 74, and an air pump switch 63 is provided on one side of the rubber handle 8 on the flexible rod 6 for controlling the air pump 52 to pump air and stop pumping air.

[0027] The more specific working process is:

[0028] For a pump head with two openings, there is no need to use a flexible tube and an air pump. Just cover the vacuum nozzle with one opening of the pump head and cover the other opening with a second sealing gasket. Then press the vacuum pump switch 63 and the second sealing gasket will be adsorbed on the opening. The air tightness of the pump head can be determined by the pressure gauge display, and then stop pumping and proceed to the next pump head inspection.

[0029] For a pump head with three openings, cover the vacuum nozzle with one opening of the pump head downwards, place the third sealing gasket on the flexible tube close to one opening, insert the airbag 74 into the opening, press the air pump switch 73, the airbag seals one outlet, and cover the other opening with the second sealing plate, press the vacuum pump switch 63, the second sealing gasket will be adsorbed on the opening, and the air tightness of the pump head can be judged by the pressure gauge display, and then press the air pump switch to deflate the airbag, press the vacuum pump switch, stop pumping and proceed to the next pump head inspection.

[0030] The situation of a pump head with multiple openings is relatively rare. Multiple flexible tube structures can be set up on the workbench. According to the inspection steps of a pump head with three openings, the openings can be sealed in turn by air bags for inspection.

[0031] The parts not described in detail in the present utility model are all known technologies to those skilled in the art. Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present utility model and are not limiting. Although the present utility model is described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present utility model, which should be included in the scope of the claims of the present utility model.

Claims

1. A cooling water pump head air tightness detection device, comprising a workbench, characterized in that: The workbench is provided with an air extraction area, the air extraction area is covered with a first sealing gasket, an air extraction hole is opened in the middle of the air extraction area, an air extraction nozzle is provided on the air extraction hole, the lower end of the air extraction nozzle is connected to an air extraction pump through a hose, and the upper end of the air extraction nozzle passes through the first sealing gasket upward to expose the workbench; The workbench is also provided with a flexible rod and a flexible tube, one end of the flexible rod is fixed on the workbench, and the other end is fixed with a second sealing pad, one end of the flexible tube is fixed on the workbench and passes through the workbench to be connected with an air pump, and the other end is fixed with a third sealing pad, an air bag is provided on the third sealing pad, and the air bag is connected with the flexible tube; The workbench is also provided with a barometer, which is used to monitor the air pressure of the air pump.

2. The cooling water pump head air tightness detection device according to claim 1, characterized in that: The exhaust zone is slightly lower than the table top of the workbench, a sealing groove is provided on the exhaust zone, a sealing frame matching the sealing groove is provided at the bottom of the first sealing gasket, the first sealing gasket cover is arranged on the exhaust zone, and the top surface of the first sealing gasket is slightly higher than the table top of the workbench.

3. The cooling water pump head air tightness detection device according to claim 1, characterized in that: A second supporting plate is fixed to the other end of the flexible rod, and the second sealing pad is adhered to the supporting plate.

4. The cooling water pump head air tightness detection device according to claim 1, characterized in that: A third supporting plate is fixed to the other end of the flexible tube, and the third sealing gasket is adhered to the supporting plate.

5. The cooling water pump head air tightness detection device according to claim 1, characterized in that: The flexible rod and the flexible tube are provided with rubber handles.

6. The cooling water pump head air tightness detection device according to claim 5, characterized in that: An air pump switch is arranged on one side of the rubber handle on the flexible tube for controlling the inflation and deflation of the airbag, and an air pump switch is arranged on one side of the rubber handle on the flexible rod for controlling the air pump to pump air and stop pumping air.

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