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Cooling water pump for vehicle engine

A technology for automobile engines and cooling water pumps, which is applied in the direction of engine cooling, engine components, machines/engines, etc. It can solve the problems of affecting the service life of water pumps, high noise, and large wear of shafts and bearings, and achieves light weight and reduced noise , to avoid the effect of biting the shaft

Pending Publication Date: 2019-07-19
DAFENG HAINA MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the existing cooling water pump, the friction between the shaft and the bearing is still relatively large, and the shaft needs to add lubricating oil frequently to reduce the friction during operation, but the amount of wear between the shaft and the bearing is still relatively large. Not only is the noise loud, but it will seriously affect the service life of the pump

Method used

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  • Cooling water pump for vehicle engine
  • Cooling water pump for vehicle engine
  • Cooling water pump for vehicle engine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Embodiment 1: This embodiment provides a cooling water pump for an automobile engine, including a pump casing 1, a copper shaft sleeve 2 is fixedly installed in the pump casing 1, and a rotating shaft 3 is coaxially installed in the shaft sleeve 2. The rotating shaft 3 is rotatably installed in the axle sleeve 2, the right end of the rotating shaft 3 is equipped with an impeller 4, and the left end of the rotating shaft 3 is equipped with a gear, which is connected with the drive motor through a transmission belt to drive the rotating shaft to rotate.

[0030] see figure 1 , the inner diameter of the shaft sleeve 2 is larger than the outer diameter of the rotating shaft 3 , thereby forming a cavity 5 with an annular cross section between the shaft sleeve 2 and the rotating shaft 3 . Two annular ball grooves 6 are provided on the surface of the rotating shaft 3 located in the inner part of the shaft sleeve 2. These two annular ball grooves 6 are coaxial with the rotating...

Embodiment 2

[0034] Embodiment 2: This embodiment provides a cooling water pump for an automobile engine. The difference from Embodiment 1 is that the other end of the inner groove 10 of the shaft sleeve 2 extends to the outer surface of the shaft sleeve 2. The outer sheath 12 is also sleeved on the outside of the shaft sleeve 2, and the outer sheath 12 is detachably sleeved on the outside of the shaft sleeve 2. When the solid lubricating material 11 needs to be added, the outer sheath 12 can be removed from the shaft sleeve 2, and then It is sufficient to add the solid lubricating material 11 into the groove 10 .

Embodiment 3

[0035] Embodiment 3: This embodiment provides a cooling water pump for an automobile engine. The difference from Embodiment 2 is that a number of penetrating bushings 2 are provided in the middle of two adjacent annular rolling grooves 7 on the bushing 2. If necessary, the outer sheath 12 can be removed, and grease or lubricating liquid can be added to the cavity 5 between the shaft sleeve 2 and the shaft 3 through the through hole 13 to further lower the shaft sleeve 2. Frictional force with the shaft 3. The left and right ends of the inner surface of the shaft sleeve 2 are also provided with a sealing groove 14, and a sealing ring is installed in the sealing groove 14, and the sealing ring can seal the left end and the right end of the cavity 5 between the shaft sleeve 2 and the rotating shaft 3, Not only can the lubricating material be sealed in the cavity 5 between the shaft sleeve 2 and the rotating shaft 3, but it can also prevent external moisture from entering the cavi...

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Abstract

The invention discloses a cooling water pump for a vehicle engine, and relates to the technical field of water pumps. The water pump comprises a pump housing, a rotary shaft is rotatably installed inthe pump housing, one end of the rotary shaft is provided with an impeller, a shaft sleeve sleeves the rotary shaft, the surface of the rotary shaft is provided with an annular spherical groove, the shaft sleeve is provided with an annular rolling groove, the annular rolling groove and the annular spherical groove are located in the same plane, an annular steel sphere frame is installed in a cavity, a plurality of circular holes are uniformly formed in the side face of the steel sphere frame, steel spheres are formed in the circular holes, one sides of the steel spheres are located in the annular rolling grooves, the other sides are located in the annular spherical groove, the shaft sleeve is internally provided with a plurality of grooves, and a solid lubricating material fills the grooves. The water pump has the advantages that the friction between the rotary shaft and the shaft sleeve is reduced, shaft clamping is avoided, frequently adding of the lubricant is not needed, the noisegenerated when the water pump is operated is reduced, the wearing magnitude of the rotary shaft and the shaft sleeve is reduced, and the service life is greatly prolonged.

Description

technical field [0001] The invention relates to the technical field of water pumps, in particular to a cooling water pump for automobile engines. Background technique [0002] In the cylinder block of the car engine, there are many water channels for cooling water circulation, which are connected with the water tank placed at the front of the car through water pipes to form a large water circulation system. The cooling water pump is located at the upper water outlet of the engine, and the engine passes through the pulley Drive, pump out the hot water in the water channel of the engine block, and pump the cold water in. There is a thermostat next to the water pump. When the car is just started (cold car), it is not turned on, so that the cooling water does not pass through the water tank, but only circulates in the engine. When the temperature of the engine reaches above 95 degrees, it is turned on, and the engine The hot water in the car is pumped into the water tank, and t...

Claims

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Application Information

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IPC IPC(8): F04D29/046F04D29/06F04D29/04F04D29/12F01P5/10
CPCF04D29/0467F04D29/06F04D29/04F04D29/126F01P5/10
Inventor 王华生
Owner DAFENG HAINA MACHINERY