CN210889440U

CN210889440U - Engine water pump sealing structure

Info

Publication number: CN210889440U
Application number: CN201921463790.1U
Authority: CN
Inventors: 陈磊; 王宁; 孙金其; 散鹏
Original assignee: Hubei Meikang Tongda Power Technology Co ltd
Current assignee: Hubei Meikang Tongda Power Technology Co ltd
Priority date: 2019-09-04
Filing date: 2019-09-04
Publication date: 2020-06-30
Anticipated expiration: 2029-09-04

Abstract

The utility model discloses an engine water pump seal structure relates to the water valve seal field, which comprises a rotating shaft, the outside of pivot is provided with the second support frame, one side of second support frame is provided with the second support frame, the inboard that the outer wall of pivot is located the second support frame is provided with T type ring, one side of second support frame is provided with the rubber circle, the inboard of gland is provided with the moving body ring, the inside that the outside of pivot is located the moving body ring is provided with the outstanding piece of pivot. The utility model discloses a set up the bottom sliding connection of T type ring and second support frame for the cooling water is difficult to leak through the gap between pivot and the stopper, and through the bottom block with the still ring between first sealed ring circle and second sealing washer, makes inside the cooling water is difficult to enter into the water pump, reduces the water pump during operation because reasons such as hydraulic pressure lead to the size of the axial force that the pivot received, has reduced the friction between pivot and the sealing washer, has improved the life of water pump.

Description

Engine water pump sealing structure

Technical Field

The utility model relates to a water valve seal field specifically is an engine water pump seal structure.

Background

The engine cooling water pump is the heart of the cooling system of the car engine, its function is to improve the working pressure of coolant in the circulating system, maintain the coolant circulation among the relevant parts of the engine, prevent the operation temperature of the engine from being too high, according to the different of supporting requirement and working condition, the engine cooling water pump structural style has centrifugal pump, volute pump and rotary displacement pump, etc., because of the restriction of space size, usually adopt the single-stage centrifugal pump composed of water inlet chamber, impeller and water outlet chamber, the structure has the small appearance size, light in weight, the water supply is large, characteristics such as the simple structure, it is a structural style that applies the most extensively, the typical centrifugal cooling circulating water pump is mainly made up of pump casing, impeller, bearing, water seal and band pulley, etc..

The sealing process of current cooling water pump adopts mechanical seal basically, the labyrinth ring that generally adopts keeps apart water, but the manufacturing process of labyrinth ring is complicated, and comparatively troublesome during the installation, manufacturing cost is higher, and the axial force is great to the sealed influence of mechanical type, the axle extrudees the friction mutually with the sealing ring under the influence of axial force, lead to the wearing and tearing of pivot, and the life has been reduced, and the sealed one deck sealing ring that generally adopts of mechanical type, damage or under the too big condition of water pressure at the sealing ring, hardly guarantee that the cooling water can not take place to leak.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: in order to solve the problems that the labyrinth ring is high in cost, the axial force is abraded to a rotating shaft, and the sealing performance of a single-layer sealing ring is poor, the sealing structure of the water pump of the engine is provided.

In order to achieve the above object, the utility model provides a following technical scheme: an engine water pump sealing structure comprises a rotating shaft, a first supporting frame is arranged on the outer side of the rotating shaft, a second support frame is arranged on one side of the first support frame, a T-shaped ring is arranged on the outer wall of the rotating shaft and positioned on the inner side of the first support frame, one side of the second supporting frame is provided with a rubber ring, one side of the rubber ring is provided with a limiting block, a first sealing ring is arranged on one side of the limiting block, a static ring is arranged on one side of the first sealing ring, a second sealing ring is arranged at the outer side of the rotating shaft and positioned in the static ring, a transmission ring is arranged at one side of the second sealing ring, a gland is arranged on the outer side of the transmission ring, a buffer spring is arranged on one side of the inner side of the gland, which is positioned on the transmission ring, the inner side of the gland is provided with a moving body ring, and the outer side of the rotating shaft is positioned in the moving body ring and is provided with a rotating shaft protruding block.

Preferably, the top end of the T-shaped ring is set to be T-shaped, a sealed chamber is formed between the T-shaped ring and the second support frame, and the T-shaped ring is connected with the bottom end of the second support frame in a sliding mode.

Preferably, the static ring is connected with the second sealing ring in a sliding mode, and the bottom end of the static ring is clamped between the first sealing ring and the second sealing ring.

Preferably, a first isolation layer is arranged between the first support frame and the second support frame, and a second isolation layer is arranged between the second support frame and the limiting block.

Preferably, one side of the gland is provided with a fixed bayonet, and the bottom end of the fixed bayonet is connected with one side of the moving body ring.

Preferably, the transmission ring is sleeved outside the rotating shaft, and the transmission ring elastically deforms the buffer spring.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a set up the bottom sliding connection of T type ring and second support frame, make the cooling water be difficult to leak through the gap between pivot and the stopper, and the T type ring processing degree of difficulty is low, the installation is swift, the cost is reduced, and through the bottom block with the stator ring between first sealing ring circle and second sealing washer, make the cooling water be difficult to enter into inside the water pump, the leakage of cooling water has been reduced, the availability factor is improved, and through being provided with buffer spring 11, reduce the water pump during operation because the size of the axial force that reasons such as hydraulic pressure lead to the pivot to receive, the friction between pivot and the sealing washer has been reduced, the service life of water pump is improved.

Drawings

Fig. 1 is a schematic view of the overall mechanism of the present invention;

fig. 2 is a plan sectional view of the present invention;

FIG. 3 is a schematic view of the structure of the present invention;

fig. 4 is a schematic view of the T-shaped ring structure of the present invention.

In the figure: 1. a rotating shaft; 2. a first support frame; 3. a static ring; 4. a gland; 5. a second support frame; 6. a limiting block; 7. a first seal ring; 8. a moving body ring; 9. fixing the bayonet; 10. a rotating shaft protruding block; 11. a buffer spring; 12. a drive ring; 13. a second seal ring; 14. a rubber ring; 15. a T-shaped ring; 16. a first isolation layer; 17. a second isolation layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, an engine water pump sealing structure includes a rotating shaft 1, a first support frame 2 is disposed on an outer side of the rotating shaft 1, a second support frame 5 is disposed on one side of the first support frame 2, a T-shaped ring 15 is disposed on an inner side of an outer wall of the rotating shaft 1, a rubber ring 14 is disposed on one side of the second support frame 5, a limit block 6 is disposed on one side of the rubber ring 14, a first seal ring 7 is disposed on one side of the limit block 6, a stationary ring 3 is disposed on one side of the first seal ring 7, a second seal ring 13 is disposed on an outer side of the rotating shaft 1 and inside the stationary ring 3, a transmission ring 12 is disposed on one side of the second seal ring 13, a gland 4 is disposed on an outer side of the transmission ring 12, a buffer spring 11 is disposed on an inner side of the gland 4, a moving ring 8 is disposed on an inner side of the gland 4, and.

Please refer to fig. 2 and 4, the top end of the T-ring 15 is set to be T-shaped, a sealing chamber is formed between the T-ring 15 and the second support frame 5, and the T-ring 15 is slidably connected to the bottom end of the second support frame 5, so that the T-ring 15 not only reduces the production cost, but also effectively isolates the cooling water from the outside.

Please refer to fig. 3, the stationary ring 3 is slidably connected to the second sealing ring 13, and the bottom end of the stationary ring 3 is clamped between the first sealing ring 7 and the second sealing ring 13, the stationary ring 3, the first sealing ring 7 and the second sealing ring 13 isolate the cooling water from the inside of the water pump, thereby reducing the influence of the cooling water on the operation of the water pump and improving the working efficiency.

Please refer to fig. 2, a first isolation layer 16 is disposed between the first support frame 2 and the second support frame 5, a second isolation layer 17 is disposed between the second support frame 5 and the limiting block 6, and the first isolation layer 16, the second isolation layer 17 and the T-shaped ring 15 form a first isolation system, thereby improving the waterproof effect.

Please refer to fig. 2, a fixing bayonet 9 is disposed on one side of the pressing cover 4, a bottom end of the fixing bayonet 9 is connected to one side of the moving body ring 8, and the fixing bayonet 9 enables the pressing cover 4 to fix the moving body ring 8 and the rotating shaft 1 together without deviation.

Please refer to fig. 3, the driving ring 12 is sleeved outside the rotating shaft 1, and the driving ring 12 elastically deforms the buffer spring 11, so that the rotating shaft 1 can transmit the axial force to the inside of the buffer spring 11 through the driving ring 12 after receiving the axial force, and the buffer spring 11 can perform simple harmonic motion to absorb the axial force.

The working principle is as follows: firstly, an external power supply is connected, a water pump is started, cooling water flows in an engine cooling pipeline under the pushing of the water pump, a rotating shaft 1 is selected under the action of a coil and a magnetic field, a limiting block 6 prevents the rotating shaft 1 from deviating during rotation, the cooling water extrudes the rotating shaft 1 and a first support frame 2, the cooling water enters a T-shaped ring 15 through a gap between the rotating shaft 1 and the first support frame 2 and is isolated by a sealing chamber formed by the T-shaped ring 15 and a second support frame 5, a first isolation system is formed by the cooling water and a first isolation layer 16 and a second isolation layer 17, the T-shaped ring 15 is simple in structure, convenient in production process and convenient to install, the cost of a product is reduced, the bottom end of a static body ring 3 is arranged inside a first sealing ring 7 and a second sealing ring 13, so that the cooling water is difficult to enter the inside of the water pump, the normal work of the water pump is influenced, and the T-, the possibility of cooling water leakage is reduced, the service efficiency of the water pump is improved, under the rapid flowing of cooling water and the running of an engine, the rotating shaft 1 is extruded, vibration generates axial force, the axial force is transmitted into the buffer spring 11 through the transmission ring 12 in the transmission process, most of the axial force is converted into elastic potential energy of the buffer spring 11 through the absorption of the buffer spring 11, the friction between the rotating shaft 1 and each sealing part is reduced, the abrasion of the rotating shaft 1 is reduced, the service life of the water pump is prolonged, after the engine stops running, the heat generated by the engine is dissipated to a certain amount by the cooling water, the water pump stops running, and an external power supply is cut off.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides an engine water pump seal structure, includes pivot (1), its characterized in that: a first support frame (2) is arranged on the outer side of the rotating shaft (1), a second support frame (5) is arranged on one side of the first support frame (2), a T-shaped ring (15) is arranged on the inner side, located on the first support frame (2), of the outer wall of the rotating shaft (1), a rubber ring (14) is arranged on one side of the second support frame (5), a limiting block (6) is arranged on one side of the rubber ring (14), a first sealing ring (7) is arranged on one side of the limiting block (6), a static ring (3) is arranged on one side of the first sealing ring (7), a second sealing ring (13) is arranged inside the static ring (3) on the outer side of the rotating shaft (1), a transmission ring (12) is arranged on one side of the second sealing ring (13), a gland (4) is arranged on the outer side of the transmission ring (12), and a buffer spring (11) is arranged on one side, located on the inner side, the inner side of the gland (4) is provided with a moving body ring (8), and the outer side of the rotating shaft (1) is provided with a rotating shaft protruding block (10) which is positioned in the moving body ring (8).

2. The engine water pump seal structure according to claim 1, characterized in that: the top of T type ring (15) sets up to the T type, form the seal chamber between T type ring (15) and second support frame (5), and the bottom sliding connection of T type ring (15) and second support frame (5).

3. The engine water pump seal structure according to claim 1, characterized in that: the static ring (3) is connected with the second sealing ring (13) in a sliding mode, and the bottom end of the static ring (3) is clamped between the first sealing ring (7) and the second sealing ring (13).

4. The engine water pump seal structure according to claim 1, characterized in that: a first isolation layer (16) is arranged between the first support frame (2) and the second support frame (5), and a second isolation layer (17) is arranged between the second support frame (5) and the limiting block (6).

5. The engine water pump seal structure according to claim 1, characterized in that: one side of the gland (4) is provided with a fixed bayonet (9), and the bottom end of the fixed bayonet (9) is connected with one side of the moving body ring (8).

6. The engine water pump seal structure according to claim 1, characterized in that: the transmission ring (12) is sleeved on the outer side of the rotating shaft (1), and the transmission ring (12) enables the buffer spring (11) to generate elastic deformation.