CN107100880B

CN107100880B - Flow guide ring for engine cooling water pump

Info

Publication number: CN107100880B
Application number: CN201710538849.8A
Authority: CN
Inventors: 许仲秋; 魏彪; 刘光明; 阳波
Original assignee: Hunan Oil Pump Co Ltd
Current assignee: Hunan Oil Pump Co Ltd
Priority date: 2017-07-04
Filing date: 2017-07-04
Publication date: 2020-06-26
Anticipated expiration: 2037-07-04
Also published as: CN107100880A

Abstract

The invention provides a flow guide ring for an engine cooling water pump, which comprises an annular body with a notch, wherein the body comprises an inner peripheral surface, an outer peripheral surface and two end surfaces, and is made of a material with the characteristics of corrosion resistance, high temperature resistance and difficult adhesion. When the water pump is used, the flow guide ring is arranged between the oil seal and the water seal of the water pump, so that on one hand, water vapor leaked from the water seal can be blocked to a certain extent, and is prevented from directly contacting with the oil seal, and the effect of supplementing sealing is achieved; on the other hand can in time lead-in the outlet discharge to the breach of water conservancy diversion ring with the water droplet of condensation, prevent that water from entering into lubricating system and leading to the risk.

Description

Flow guide ring for engine cooling water pump

Technical Field

The invention relates to an engine cooling water pump.

Background

For an engine cooling water pump adopting oil lubrication, an oil seal and a water seal are required to be respectively arranged between a rotating shaft and a pump body, cooling liquid and a lubrication transmission system are mutually isolated, on one hand, the leakage of lubricating oil is prevented, on the other hand, the phenomenon that the quality of the lubricating oil is deteriorated and metal parts are corroded and eroded due to the fact that the cooling liquid is mixed into the lubricating oil is prevented, and abnormal abrasion is caused, so that the service life of the water pump is shortened. In principle, the lubricating oil cannot be mixed with any water, but since the seal cannot be completely sealed (the seal generally defines an allowable minimum leakage value), a small amount of water vapor evaporated from the coolant at higher temperatures can still leak out through the seal. The leaked water vapor is directly contacted with the lip of the oil seal to damage an oil film and reduce the bearing capacity of a lubricating film; or the water-cooled oil pump body is cooled and liquefied into fine water drops after being contacted with the inner wall surface of the shaft hole of the pump body, but the fine water drops are not immediately gathered under the action of surface tension and are discharged through a water drainage hole between the water seal and the oil seal but adhered to the wall surface because the inner wall surface of the shaft hole of the pump body is not smooth. When these fine water droplets are excessive, they may enter the lubricating oil chamber, thereby posing a series of risks of deteriorating the lubricating system as described above.

Disclosure of Invention

The invention aims to provide a guide ring for an engine cooling water pump, which is arranged in a shaft hole of a pump body and between an oil seal and a water seal, and can prevent cooling liquid from mixing into lubricating oil.

In order to solve the technical problems, the invention adopts the following technical scheme: a flow guide ring for an engine cooling water pump comprises an annular body with a notch, wherein the body comprises an inner peripheral surface, an outer peripheral surface and two end surfaces, and is made of a material with the characteristics of corrosion resistance, high temperature resistance and difficult adhesion.

Preferably, the body is a semi-closed ring.

Furthermore, a convex cylinder is arranged on one end face of the body.

Furthermore, the body is provided with a through hole penetrating through the two end faces.

In one embodiment, the body is made of polytetrafluoroethylene.

The invention has the following beneficial effects: when the water seal is used, the flow guide ring is arranged between the oil seal and the water seal, so that water vapor leaked from the water seal can be blocked to a certain extent, and is prevented from directly contacting with the oil seal, and the effect of supplementing sealing is achieved; because the water conservancy diversion ring is opened jaggedly, the position of this breach aligns the outlet of the pump body, and the water conservancy diversion ring is made by the material that has corrosion-resistant, high temperature resistant, difficult adhesion characteristic, just so can in time channel into the outlet with the water droplet of condensation through the breach of water conservancy diversion ring and discharge, prevent that water from entering into lubricating system and leading to the risk.

Drawings

Fig. 1 is a schematic structural view of a guide ring in embodiment 1 of the present invention;

fig. 2 is a schematic structural view of a deflector ring in embodiment 2 of the present invention;

the reference signs are:

1-body 2-cylinder 3-through hole.

Detailed Description

In order to facilitate understanding of those skilled in the art, the present invention will be further described with reference to the following examples and drawings, which are not intended to limit the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise. In the description of the present invention, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, mechanically or electrically connected, or interconnected between two elements, directly or indirectly through intervening media, and the specific meaning of the terms may be understood by those skilled in the art according to their specific situation.

Example 1

As shown in fig. 1, a flow guide ring for an engine cooling water pump comprises an annular body 1 with a notch, wherein the body 1 comprises an inner peripheral surface, an outer peripheral surface and two end surfaces, and the body 1 is made of a material with corrosion resistance, high temperature resistance and difficult adhesion.

Preferably, the body 1 is a semi-closed ring made of polytetrafluoroethylene, and a protruding cylinder 2 is arranged on one end face of the body 1.

When the guide ring is used, in order to fixedly install the guide ring in the shaft hole of the pump body, a pin hole needs to be formed in the stepped surface in the shaft hole of the pump body, and then the cylinder 2 on the guide ring is embedded into the pin hole.

Example 2

As shown in fig. 2, a deflector ring for an engine cooling water pump comprises an annular body 1 with a notch, wherein the body 1 comprises an inner peripheral surface, an outer peripheral surface and two end surfaces, and the body 1 is made of a material with corrosion resistance, high temperature resistance and difficult adhesion.

Preferably, the body 1 is a semi-closed ring made of polytetrafluoroethylene, and a through hole 3 penetrating through two end faces is formed in the body 1.

When the guide ring is used, in order to fixedly install the guide ring in the shaft hole of the pump body, a pin hole is required to be formed in the stepped surface in the shaft hole of the pump body, and then an elastic pin shaft is inserted into the through hole 3 and the pin hole at the same time.

The above embodiments are preferred implementations of the present invention, and the present invention can be implemented in other ways without departing from the spirit of the present invention.

Some of the drawings and descriptions of the present invention have been simplified to facilitate the understanding of the improvements over the prior art by those skilled in the art, and some other elements have been omitted from this document for the sake of clarity, and it should be appreciated by those skilled in the art that such omitted elements may also constitute the subject matter of the present invention.

Claims

1. The utility model provides a water conservancy diversion ring for engine cooling water pump installs in the shaft hole of the pump body, sets up between oil blanket and water seal, can prevent that the coolant liquid from sneaking into in the lubricating oil, its characterized in that: the flow guide ring comprises a semi-closed annular body (1) with a notch, the position of the notch is aligned to a water drainage hole of the pump body, the shaft hole is a stepped hole, the body (1) comprises an inner peripheral surface, an outer peripheral surface and two end surfaces, and the body (1) is made of a material with corrosion resistance, high temperature resistance and difficult adhesion characteristics.

2. The deflector ring for an engine cooling water pump of claim 1, wherein: a convex cylinder (2) is arranged on one end face of the body (1).

3. The deflector ring for an engine cooling water pump of claim 1, wherein: the body (1) is provided with a through hole (3) penetrating through the two end faces.

4. The deflector ring for an engine cooling water pump of claim 1, wherein: the body (1) is made of polytetrafluoroethylene.