CN212928214U - Wear-proof water pump - Google Patents

Abstract

The utility model relates to the technical field of water pumps, a wear-proof water pump is disclosed, it includes pump case (1) and impeller (2) of installing in pump case (1), install axis of rotation (3) on pump case (1), install on shaft hole (11) with axis of rotation (3) complex first bearing (4), define one side of impeller (2) towards first bearing (4) as its inboard, impeller (2) inboard is installed ceramic gasket (5), when impeller (2) rotates, the interval between ceramic gasket (5) and first bearing (4) is 0.7mm-1.3 mm; when the impeller (2) stops rotating, the ceramic gasket (5) is in contact fit with the first bearing (4) and counteracts axial reaction force. The utility model discloses but increased the ceramic pad structure of balanced axial reaction force on the water pump, not only can realize that the water pump life-span improves the purpose to can reduce the problem of the long-term operation in-process noise increase again of water pump.

Description

Wear-proof water pump

Technical Field

The utility model relates to a water pump technical field has especially related to a water pump of abrasionproof decreases.

Background

At present, a new energy automobile is provided with a motor cooling system, an air conditioning system, a warm air system and other heat management systems, and the principle of the new energy automobile is that an electric water pump is adopted to circulate cooling liquid of a water tank, heat is dissipated out through a motor, a controller and other heat generating equipment and a radiator, so that the heat generating equipment in the automobile can be guaranteed to operate at normal temperature. In the system, the electric water pump is used as the only power source of the water circulation system, the requirement on the reliability of the product is higher, once the electric water pump is damaged due to failure, the normal operation of instruments of the motor cannot be ensured, and even the vehicle can be burnt.

The existing electric water pump is axially supported by only one silicon carbide bearing to prevent abrasion in the operation process of the water pump, but in the stalling process of the water pump, a protection component is not arranged to prevent the abrasion caused by the rebounding of a water pump impeller and a front cover, so that the performance and the operation stability of the electric water pump can be influenced.

At present, the invention patent with the patent number 200410034857.1, namely a water pump, has the defects of short service life and noise.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to the shortcoming that short-lived, noise sound among the prior art, provide a water pump of abrasionproof decreases.

In order to solve the technical problem, the utility model discloses a following technical scheme can solve:

the utility model provides a water pump of abrasionproof decreases, includes the pump case and installs the impeller in the pump case, installs the axis of rotation on the pump case, and the impeller cooperates with the axis of rotation and drives rotation, its characterized in that by the axis of rotation: the pump shell is provided with a shaft hole, the rotating shaft extends into the shaft hole and is connected with the impeller, the shaft hole is provided with a first bearing matched with the rotating shaft, one side of the impeller, facing the first bearing, is defined as the inner side of the first bearing, the inner side of the impeller is provided with a ceramic gasket, and when the impeller rotates, the interval between the ceramic gasket and the first bearing is 0.7mm-1.3 mm; when the impeller stops rotating, the ceramic gasket is in contact fit with the first bearing and counteracts axial reaction force.

Preferably, the first bearing is a silicon carbide bearing.

Preferably, an annular gasket groove is formed in the inner side of the impeller, the gasket groove is arranged coaxially with the impeller, and the ceramic gasket is mounted in the gasket groove.

As preferredly, the notch play in gasket groove is equipped with and keeps off the ring, and ceramic gasket includes solid fixed ring and the cushion ring of integrated into one piece and coaxial setting, gu during fixed ring embedding gasket groove, gu fixed ring's external diameter is greater than the internal diameter that keeps off the ring, the diameter that cushions the ring with keep off ring internal diameter cooperation and stretch out the first bearing setting of gasket groove outer orientation.

Preferably, the cushion ring is provided with a cushion rib on the inner side facing the first bearing.

Preferably, the buffering ribs are distributed in a grid.

Preferably, the gap of the buffer convex rib is provided with a buffer convex column, and the height of the buffer convex column is greater than that of the buffer convex rib.

The utility model discloses owing to adopted above technical scheme, have apparent technological effect: the utility model discloses but increased the ceramic pad structure of balanced axial reaction force on the water pump, not only can realize that the water pump life-span improves the purpose to can reduce the problem of the long-term operation in-process noise increase again of water pump.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a partially enlarged view of fig. 1.

Fig. 3 is a schematic structural view of an impeller and a ceramic spacer.

Fig. 4 is a schematic view of the structure of the pump casing and the first bearing.

Fig. 5 is a schematic structural view of a ceramic gasket.

The names of the parts indicated by the numerical references in the drawings are as follows: 1-pump case, 2-impeller, 3-axis of rotation, 4-first bearing, 5-ceramic gasket, 11-shaft hole, 21-gasket groove, 211-fender ring, 51-solid fixed ring, 52-buffer ring, 53-buffering protruding muscle, 54-buffering convex column.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

Example 1

An anti-abrasion water pump comprises a pump shell 1 and an impeller 2 arranged in the pump shell 1, wherein a rotating shaft 3 is arranged on the pump shell 1, the impeller 2 is matched with the rotating shaft 3 and driven to rotate by the rotating shaft 3, a shaft hole 11 is formed in the pump shell 1, the rotating shaft 3 extends into the shaft hole 11 and is connected with the impeller 2, a first bearing 4 matched with the rotating shaft 3 is arranged on the shaft hole 11, the pump shell 1 comprises an outer shell and an inner shell which are connected through ultrasonic welding, an impeller cavity for placing the impeller is formed by the outer shell and the inner shell, the shaft hole 11 is communicated with the impeller cavity, the first bearing 4 is positioned at the joint of the shaft hole 11 and the impeller cavity, one side, facing the first bearing 4, of the impeller 2 is defined as the inner side, a ceramic gasket 5 is arranged on the inner side of the impeller 2, and when the impeller 2 rotates; during the stop of the rotation of the impeller 2, the ceramic washer 5 is in contact engagement with the first bearing 4 and counteracts the axial reaction force. At electric water pump operation in-process, guarantee through ceramic gasket 5 that the bearing of installation can not the looks mutual friction on first bearing 4 and the impeller 2, the in-process stops, can protect the water pump in the twinkling of an eye the in-process inertia power kick-back to the wearing and tearing that impeller 2 caused, thereby improve product performance and reliability, the wearing and tearing that axis of rotation 3 caused the housing also can be protected to this structure simultaneously, great increase electric water pump's life-span, ceramic gasket 5 and first bearing 4 contact each other offset the axial reverse effort.

The first bearing 4 is a silicon carbide bearing. The ceramic pad 5 and the silicon carbide bearing material are determined not to cause self-damage in long-term abrasion.

The inner side of the impeller 2 is provided with an annular gasket groove 21, the gasket groove 21 and the impeller 2 are coaxially arranged, and the ceramic gasket 5 is arranged in the gasket groove 21.

The notch play of gasket groove 21 is equipped with keeps off ring 211, and ceramic shim 5 includes solid fixed ring 511 and buffer ring 52 of integrated into one piece and coaxial setting, and during solid fixed ring 511 imbedded the gasket groove 21, solid fixed ring 51's external diameter was greater than the internal diameter that keeps off ring 211, and buffer ring 52's diameter and the cooperation of keeping off ring 211 internal diameter and stretch out outside the gasket groove 21 and set up towards first bearing 4.

Example 2

The same as in embodiment 1, except that the cushion ring 52 is provided with a cushion rib 53 toward the inside of the first bearing 4.

The buffer ribs 53 are arranged in a grid.

Example 3

The same as embodiment 2, except that the buffer convex column 54 is provided at the gap of the buffer convex rib 53, and the height of the buffer convex column 54 is larger than that of the buffer convex rib 53.

When ceramic pad 5 contacts with first bearing 4, loop through buffering projection 54 and buffering protruding muscle 53 and cushion, reached better buffering effect, be favorable to offsetting axial reverse acting force.

Claims (7)

1. The utility model provides a water pump of abrasionproof decreases, includes pump case (1) and installs impeller (2) in pump case (1), installs axis of rotation (3) on pump case (1), and impeller (2) and axis of rotation (3) cooperation and drive the rotation by axis of rotation (3), its characterized in that: the pump shell (1) is provided with a shaft hole (11), the rotating shaft (3) extends into the shaft hole (11) and is connected with the impeller (2), the shaft hole (11) is provided with a first bearing (4) matched with the rotating shaft (3), one side of the impeller (2) facing the first bearing (4) is defined as the inner side of the impeller, the inner side of the impeller (2) is provided with a ceramic gasket (5), and when the impeller (2) rotates, the interval between the ceramic gasket (5) and the first bearing (4) is 0.7mm-1.3 mm; when the impeller (2) stops rotating, the ceramic gasket (5) is in contact fit with the first bearing (4) and counteracts axial reaction force.

2. A wear resistant water pump as claimed in claim 1, wherein: the first bearing is a silicon carbide bearing.

3. A wear resistant water pump as claimed in claim 1, wherein: the inner side of the impeller (2) is provided with an annular gasket groove (21), the gasket groove (21) and the impeller (2) are coaxially arranged, and the ceramic gasket (5) is arranged in the gasket groove (21).

4. A wear resistant water pump as claimed in claim 3, wherein: the notch play of gasket groove (21) is equipped with keeps off ring (211), and ceramic gasket (5) are including solid fixed ring (51) and buffer ring (52) of integrated into one piece and coaxial setting, and during solid fixed ring (51) embedding gasket groove (21), the external diameter of solid fixed ring (51) is greater than the internal diameter that keeps off ring (211), and the diameter of buffer ring (52) and keep off ring (211) internal diameter cooperation and stretch out outside gasket groove (21) towards first bearing (4) setting.

5. The wear resistant water pump of claim 4, wherein: the buffer ring (52) is provided with a buffer convex rib (53) towards the inner side of the first bearing (4).

6. The wear resistant water pump of claim 4, wherein: the buffer convex ribs (53) are distributed in a grid shape.

7. The wear resistant water pump of claim 4, wherein: the gap of the buffer convex rib (53) is provided with a buffer convex column (54), and the height of the buffer convex column (54) is larger than that of the buffer convex rib (53).

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