CN210217890U

CN210217890U - Engine water pump and engine

Info

Publication number: CN210217890U
Application number: CN201920834891.9U
Authority: CN
Inventors: Liming Liu; 刘丽明
Original assignee: Zhejiang Justice And Benefit Beijing Great Automotive Components Co Ltd; Zhejiang Geely Holding Group Co Ltd
Current assignee: Zhejiang Justice And Benefit Beijing Great Automotive Components Co Ltd; Zhejiang Geely Holding Group Co Ltd
Priority date: 2019-06-04
Filing date: 2019-06-04
Publication date: 2020-03-31
Anticipated expiration: 2029-06-04

Abstract

The utility model provides an engine water pump and engine relates to water pump technical field. The engine water pump includes water pump main part and leak protection structure, and the water pump inner chamber has been injectd to the water pump main part, and leak protection structure includes: the water pump comprises a motor shaft, a volute, a bearing and a water seal, wherein the motor shaft is axially arranged along an inner cavity of the water pump, the volute is positioned at the output end of the motor shaft, the bearing is positioned in the inner cavity of the water pump and sleeved on the motor shaft, and the water seal is used for sealing the outer wall of the motor shaft and the inner wall of the water pump main body. Wherein the bearing and the water seal limit an evaporation cavity, the evaporation cavity is communicated with the volute to form a channel, and a one-way valve is arranged in the channel so that liquid or gas in the evaporation cavity flows to the volute in a one-way mode. When the pressure of the cooling liquid leaked into the evaporation cavity reaches the opening pressure of the one-way valve, the cooling liquid enters the volute through the one-way valve to participate in normal cooling liquid circulation. By adopting the engine water pump, the damage of the engine water pump caused by the leakage of the cooling liquid is avoided, and the scrapping of the engine due to overheating caused by the loss of the cooling liquid is also avoided.

Description

Engine water pump and engine

Technical Field

The utility model relates to a water pump technical field especially relates to an engine water pump and engine.

Background

The existing cooling system of the automobile adopts a water cooling system. In the water pump structure, the water seal is used for preventing cooling liquid in a pump cavity from entering a bearing, and the working principle of the water seal is a device for preventing fluid leakage, wherein the device is formed by keeping fit and relative sliding of a movable ring and a static ring under the action of spring force and the cooperation of auxiliary sealing. The existing engine water pump adopts an evaporating dish structure to contain the cooling liquid flowing out of the water seal due to running-in, the water seal needs the cooling liquid to lubricate in the operation process, a small amount of cooling liquid can enter the evaporating dish due to the running-in of the water seal, the water pump is discharged outside in a gaseous mode through the evaporation of the evaporating dish, the long-time leakage can cause the damage of the water pump and the loss of the cooling liquid of the vehicle, and the serious condition can cause the scrapping of the engine due to overheating.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an object of the first aspect is to provide an engine water pump, overcome above-mentioned technical defect, solve the problem that water pump coolant liquid leaked among the prior art.

The utility model discloses the further purpose of first aspect is to solve the problem that engine water pump work efficiency is low.

An object of the second aspect of the present invention is to provide an engine.

According to the utility model discloses in the first aspect, the utility model provides an engine water pump, including water pump main part and leak protection structure, water pump inner chamber has been injectd to the water pump main part, leak protection structure includes:

the motor shaft is axially arranged along the inner cavity of the water pump;

the volute is positioned at the output end of the motor shaft and used for containing cooling liquid;

the water seal is sleeved on one end, close to the volute, of the motor shaft and used for sealing the outer wall of the motor shaft and the inner wall of the water pump main body so as to prevent the cooling liquid from entering the inner cavity of the water pump;

the bearing is positioned in the inner cavity of the water pump and sleeved on one end of the motor shaft, which is far away from the volute, and the bearing and the water seal define an evaporation cavity;

the evaporation cavity is communicated with the volute to form a channel, and a one-way valve is arranged in the channel so that liquid or gas in the evaporation cavity flows to the volute in a one-way mode.

Optionally, the one-way valve is provided at an end of the volute.

Optionally, the evaporation chamber is a cylindrical annular cavity.

Optionally, the channel is arranged at any position of the evaporation cavity.

Optionally, the passage is provided at a lower portion of the evaporation chamber in a radial direction of the water pump body.

Optionally, a bearing seal is mounted on the bearing.

Optionally, the one-way valve is axially disposed along the water pump lumen.

According to the utility model discloses a second aspect, the utility model discloses still provide an engine, the engine is installed engine water pump.

The utility model discloses in the water seal with the bearing is in be injectd in the water pump inner chamber evaporation chamber, evaporation chamber with the spiral case switch-on forms the passageway set up the check valve in the passageway, so that follow the coolant liquid that water seal department leaked flows to one-wayly the spiral case avoids the coolant liquid to leak outside the water pump, has improved the life of engine, the cost is reduced.

The utility model discloses in will the check valve sets up the tip of spiral case makes the coolant liquid of leaking participate in normal cooling system circulation at the spiral case through the check valve gathering, has avoided the disappearance of coolant liquid, has further improved the work efficiency of engine.

The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.

Drawings

Some specific embodiments of the present invention will be described in detail hereinafter by way of example and not by way of limitation with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:

FIG. 1 is a schematic block diagram of an engine water pump according to an embodiment of the present invention;

fig. 2 is a schematic partially enlarged view of the engine water pump shown in fig. 1.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by referring to the drawings are exemplary intended for explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

Fig. 1 is a schematic structural view of an engine water pump according to an embodiment of the present invention. As shown in fig. 1, in a specific embodiment, the present invention provides an engine water pump, including: water pump main part 1 and prevent leaking the structure, water pump inner chamber 3 has been injectd to water pump main part 1, prevents leaking the structure and includes: motor shaft 5, volute 8, water seal 21 and bearing 22. Wherein motor shaft 5 is arranged along water pump inner chamber 3 axial, and spiral case 8 is located the output of motor shaft 5, is located the right side of water pump main part 1 promptly for hold the coolant liquid. The water seal 21 is sleeved on one end of the motor shaft 5 close to the volute 8 and used for sealing the outer wall of the motor shaft 5 and the inner wall of the water pump main body 1 so as to prevent cooling liquid from entering the inner cavity 3 of the water pump. The bearing 22 is located in the water pump inner chamber 3 and is sleeved on one end of the motor shaft 5 far away from the volute 8.

Further, the leakage-proof structure further comprises an evaporation cavity 31 defined by the bearing 22 and the water seal 21, a channel 6 formed by communicating the evaporation cavity 31 with the volute 8, and a one-way valve 7 arranged in the channel 6, wherein the evaporation cavity 31 is a cylindrical annular cavity, and the water pump inner cavity 3 contains the evaporation cavity 31. The channel 6 can be arranged at any position of the evaporation chamber 31, so that the liquid or gas in the evaporation chamber 31 flows to the volute 8 in a one-way mode, that is, the one-way valve 7 is arranged in a direction only allowing the cooling liquid in the evaporation chamber 31 to enter the volute 8, and the problem of water pump leakage is solved.

The water seal 21 is positioned on one side of the water pump inner cavity 3 close to the volute 8, and the bearing 22 is positioned on one side of the water pump inner cavity 3 far away from the volute 8. Fig. 2 is a schematic partially enlarged view of the engine water pump shown in fig. 1. As shown in fig. 2, the bearing seal 4 is attached to the bearing 22, and the sealing performance of the evaporation chamber 31 can be improved, so that the leaked coolant is less likely to flow out.

The channel 6 can be in an "L" shape, the check valve 7 can be arranged in the axial direction of the channel 6 or in the radial direction of the channel 6, when the check valve 7 is arranged in the axial direction of the channel 6, the axial length of the channel 6 only needs to be slightly greater than the installation length of the check valve 7, and the axial width is consistent with the diameter of the outer wall of the check valve 7 so as to ensure that the cooling liquid in the volute 8 cannot enter the evaporation cavity 31. When the check valve 7 is arranged in the radial direction of the channel 6, the length of the channel 6 in the radial direction only needs to be slightly larger than the installation length of the check valve 7, and the width in the radial direction is consistent with the diameter of the outer wall of the check valve 7. The manufacturing cost of the water pump can be reduced.

During the normal operation of the engine water pump, when the moving ring and the static ring in the water seal 21 slide with each other, the cooling liquid is needed for lubrication, and the lubricated cooling liquid enters the evaporation cavity 31 in a liquid or gaseous form. With the increase of the pressure in the evaporation cavity 31, when the pressure reaches the opening pressure of the check valve 7, the cooling liquid enters the volute 8 through the check valve 7, when the pressure is smaller than the opening pressure of the check valve 7, the check valve 7 is closed, and the leaked cooling liquid enters the engine cooling system to participate in normal circulation after flowing into the volute 8. Therefore, even if a small amount of cooling liquid leaks when the water seal 21 works normally, the normal work of the water pump and the cooling system is not influenced, the leakage of the water pump is sensed by customers, and the occurrence of misjudgment is avoided.

In a preferred embodiment, the passage 6 may be provided at a lower portion of the evaporation chamber 31 in a radial direction of the water pump body 1, and the cooling liquid introduced into the evaporation chamber 31 is introduced into the scroll 8 through the check valve 7 provided in the passage 6 in a gaseous or liquid state.

In another preferred embodiment, the check valve 7 is arranged at the end of the volute 8, so that the cooling liquid in the evaporation chamber 31 passes through the check valve 7 and directly enters the volute 8 without being retained in the channel 6, and the speed of returning the leaked cooling liquid to the normal cooling system is increased.

The utility model discloses it has the evaporation chamber to inject among well water seal and the bearing water pump inner chamber, the evaporation chamber forms the passageway with the spiral case switch-on, set up the check valve in the passageway, so that the coolant liquid from water seal department leakage flows to the spiral case one-wayly, avoid the coolant liquid to leak outside the water pump, the coolant liquid that has avoided leaking simultaneously is detained in the evaporation intracavity, long-time delay can cause the damage to engine water pump, the life of engine water pump and the adaptability of engine water pump to service environment have further been improved, and the cost is reduced.

The utility model discloses in will the check valve sets up the tip of spiral case makes the coolant liquid of leaking participate in normal cooling system circulation at the spiral case through the check valve gathering, thereby avoided the long-time leakage of coolant liquid to cause the coolant liquid to lack and lead to the engine overheated and scrap to the work efficiency of engine has further been improved.

The utility model discloses still provide an install the engine of the engine water pump in above-mentioned arbitrary embodiment, to the engine water pump, here just not need a repeated description.

Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been illustrated and described in detail herein, many other variations and modifications can be made in accordance with the principles of the invention, as may be directly determined or derived from the disclosure herein, without departing from the spirit and scope of the invention. Accordingly, the scope of the present invention should be understood and interpreted to cover all such other variations or modifications.

Claims

1. An engine water pump, characterized in that, includes water pump main part and leak protection structure, the water pump main part has injectd the water pump inner chamber, leak protection structure includes:

the motor shaft is axially arranged along the inner cavity of the water pump;

the bearing is positioned in the inner cavity of the water pump and sleeved on one end of the motor shaft, which is far away from the volute, and an evaporation cavity is defined by the bearing and the water seal;

2. The engine water pump of claim 1, wherein the one-way valve is disposed at an end of the volute.

3. The engine water pump of claim 1, wherein the evaporation chamber is a cylindrical annular cavity.

4. The engine water pump of claim 1, wherein the passage is disposed anywhere in the evaporation chamber.

5. The engine water pump of claim 1, wherein the passage is provided at a lower portion of the evaporation chamber in a radial direction of the water pump body.

6. The engine water pump of claim 1, wherein a bearing seal is mounted on the bearing.

7. The engine water pump of claim 1, wherein the one-way valve is positioned axially along the water pump inner cavity.

8. An engine, characterized in that the engine is equipped with an engine water pump according to any one of claims 1 to 7.