WO2019114567A1

WO2019114567A1 - Self-cooled water pump

Info

Publication number: WO2019114567A1
Application number: PCT/CN2018/118414
Authority: WO
Inventors: 张颖; 董国兴; 杜丽红; 高利飞
Original assignee: 张颖
Priority date: 2017-12-12
Filing date: 2018-11-30
Publication date: 2019-06-20
Also published as: CN109915420A

Abstract

A self-cooled water pump comprises a pump housing (1), a rounded water cavity outlet channel (2), and an impeller (3). The rounded water cavity outlet channel (2) is provided at a rear end of the pump housing (1). The impeller (3) is provided in the rounded water cavity outlet channel (2). The self-cooled water pump further comprises a pump seat (4), a water pump shaft front support, a water pump shaft rear support, and a water pump shaft (5). A bottom portion of the pump seat (4) is integrally connected to a lower portion of an inner wall of the pump housing (1). A water inlet (6) is provided at a top middle portion of the pump housing (1). A central position of a rear portion of the pump housing (1) is provided with a rounded cavity water inlet (7). The water pump shaft front support and the water pump shaft rear support are respectively provided in front and middle portions of the pump seat (4). A tail portion of the water pump shaft (5) is connected to the impeller (3). The pump seat and the pump housing of the self-cooled water pump are integrally formed, such that a water inlet cavity surrounds a bearing chamber, and heat generated by the bearing chamber is taken out by a water flow to achieve automatic cooling, thereby realizing continuous high-speed operation and prolonging the service life of the invention.

Description

Self-cooling water pump

Technical field

The present invention relates to a water pump, and more particularly to a self-cooling water pump.

Background technique

In the prior art, the water pump has various types of pumps, such as centrifugal, axial flow, mixing, self-priming, supercharging, and submersible. Generally, the pump is designed to be a pump seat, a bearing chamber, and a pump casing as a split piece, so that the water pump is produced. It is easy to manufacture, but after the bearing rotates, the air can not dissipate the heat of the bearing chamber, which limits the continuous working time and the maximum speed of the pump, which affects the maximum function of the pump, thus affecting the overall function of the device.

technical problem

In view of this, the main object of the present invention is to provide a self-cooling water pump. Through the technical solution, the pump seat, the bearing chamber and the pump casing are integrally designed, so that the water inlet chamber surrounds the bearing chamber cavity, and the bearing chamber is generated by the water flow. The heat is taken out to form an automatic cooling, thereby achieving continuous high-speed operation and prolonging the service life.

Technical solution

In order to achieve the above object, the technical solution of the present invention is achieved by a self-cooling water pump including a pump casing, a worm-line chamber water outlet and an impeller, and the vortex chamber water outlet is disposed on the rear end of the pump casing, and the impeller is disposed. In the vortex chamber water outlet, the pump seat, the water pump shaft front support, the water pump shaft rear support and the water pump shaft are further included, and the bottom of the pump base is integrally connected with the lower part of the inner wall of the pump casing, and the upper part of the pump base is upwardly convex, and the pump seat front end Radially integrated with the inner wall of the front end of the pump casing, a water inlet is arranged at the top of the pump casing, and a vortex cavity water inlet is provided at the center of the rear of the pump casing, and the water pump shaft front support and the water pump shaft rear support are respectively arranged in the pump In the front and middle sections of the seat, the water pump shafts are respectively disposed in the front support of the water pump shaft and the rear support of the water pump shaft, and the tail of the water pump shaft is connected to the impeller.

As a further technical solution, the front portion of the pump base is upwardly connected with the corresponding inner wall of the upper portion of the pump casing, and a lubrication chamber with an annular space is disposed between the front support of the pump shaft and the rear support of the water pump shaft in the pump seat. An oil injection hole and an oil discharge hole are respectively disposed above the front part of the pump casing and below the front part of the pump casing, and the oil injection hole and the oil discharge hole are connected to the lubrication chamber through the pump seat, and are respectively disposed on the oil injection hole and the oil discharge hole of the pump casing Oil seal and oil drain seal.

As a further technical solution, the pump seat on the rear of the water pump shaft is provided with an alloy water seal, and the inner side of the alloy water seal is pressed against the arc surface of the water pump shaft on the pump seat in front of the alloy water seal. An oil-water draining ring having an annular cavity is provided, and an oil-water draining hole is arranged on the pump seat below the corresponding position of the oil-water draining ring.

As a further technical solution, a water guiding slope is arranged at the water inlet of the worm cavity at the rear of the pump casing.

As a further technical solution, the water pump shaft front support and the water pump shaft rear support are respectively composed of a front axle chamber, a front bearing and a rear axle chamber, and a rear bearing, and the front bearing and the rear bearing are respectively disposed in the corresponding front axle chambers. In the rear axle chamber, a front bearing seal cover is fixed to the front end of the front axle chamber, and a rear bearing oil seal is disposed on the pump base behind the rear bearing.

As a further technical solution, the diameter of the front bearing is larger than the diameter of the rear bearing.

As a further technical solution, a mounting base is arranged below the pump casing.

Beneficial effect

The utility model adopts the above technical solution: a self-cooling water pump, through the technical scheme, the pump seat, the bearing chamber and the pump casing are designed as one body, so that the inlet water chamber surrounds the bearing chamber cavity, and the bearing chamber is generated by the water flow. The heat is taken out to form an automatic cooling, thereby achieving continuous high-speed operation and prolonging the service life.

DRAWINGS

Figure 1 is a schematic cross-sectional view showing the entire structure of the present invention.

2 is a schematic cross-sectional view of the top view of FIG. 1.

In the figure, 1 pump casing, 2 worm line cavity water outlet, 3 impeller, 4 pump seat, 5 water pump shaft, 6 water inlet, 7 worm line cavity water inlet, 8 lubrication chamber, 9 oil injection hole, 10 oil drain hole, 11 Oil seal, 12 oil seal, 13 alloy water seal, 14 oil water drain ring, 15 oil drain hole, 16 water guide slope, 17 front axle chamber, 18 front bearing, 19 rear axle chamber, 20 rear bearing, 21 front bearing seal Cover, 22 rear bearing oil seal, 23 mounting base.

Embodiments of the invention

The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

As shown in FIG. 1 and FIG. 2, the present invention relates to a self-cooling water pump comprising a pump casing 1, a worm-line chamber water outlet 2 and an impeller 3, and the worm-line chamber water outlet 2 is fixed on a rear end of the pump casing 1, The impeller 3 is disposed in the vortex chamber water outlet 2, and further includes a pump base 4, a water pump shaft front support, a water pump shaft rear support and a water pump shaft 5. The bottom of the pump base 4 is integrally connected with the lower part of the inner wall of the pump casing 1, and the pump base 4 The upper part is upwardly convex, the front end of the pump base 4 is integrally connected with the inner wall of the front end of the pump casing 1 in the radial direction, the water inlet 6 is arranged at the top of the pump casing 1, and the snail cavity water inlet 7 is arranged at the center of the rear part of the pump casing 1. The water pump shaft front support and the water pump shaft rear support are respectively disposed in the front and middle portions of the pump base 4, and the water pump shaft 5 is respectively disposed in the water pump shaft front support and the water pump shaft rear support, and the tail of the water pump shaft 5 is connected to the impeller 3 .

As a further embodiment, the front portion of the pump base 4 is upwardly connected to the corresponding upper inner wall of the pump casing 1 , and an annular space is arranged between the pump shaft front support and the pump shaft rear support in the pump base 4 . The lubrication chamber 8, the upper portion of the front portion of the pump casing 1 and the lower portion of the front portion of the pump casing 1 are respectively provided with an oil filling hole 9 and an oil discharging hole 10, and the oil filling hole 9 and the oil discharging hole 10 communicate with the lubrication chamber 8 via the pump seat 4 at the pump An oil filling seal 11 and an oil drain seal 12 are respectively disposed on the oil hole 9 and the oil drain hole 10 of the casing 1.

As a further embodiment, the pump seat 4 at the rear of the water pump shaft is provided with an alloy water seal 13 , and the inner side surface of the alloy water seal 13 is pressed against the arc surface of the water pump shaft 5 in the alloy water seal 13 The front pump seat 4 is provided with an oil-water drain ring 14 having an annular cavity, and a pumping water drain hole 15 is provided in the pump seat 4 below the corresponding position of the oil-water drain ring 14.

As a further embodiment, a water collecting slope 16 is provided at the worm chamber water inlet 7 at the rear of the pump casing 1.

As a further embodiment, the water pump shaft front support and the water pump shaft rear support are respectively constituted by a front axle chamber 17, a front bearing 18 and a rear axle chamber 19, and a rear bearing 20, and the front bearing 18 and the rear bearing 20 are respectively disposed at In the corresponding front shaft chamber 17 and rear shaft chamber 19, a front bearing seal cover 21 is fixed to the front end of the front shaft chamber 17, and a rear bearing oil seal 22 is provided on the pump base 4 at the rear of the rear bearing 20.

As a further embodiment, the diameter of the front bearing 18 is greater than the diameter of the rear bearing 20.

As a further embodiment, a mounting base 23 is provided below the pump casing 1.

When the water pump shaft 5 of the present invention is assembled, the water pump shaft 5 is first fitted with the front bearing 18 and the rear bearing 20, and the rear bearing 20 and the front bearing 18 are inserted into the rear axle chamber 19 and the front axle chamber 17 from the front. .

When the self-cooling water pump of the present invention is in operation, the pump casing 1 is fixed by the mounting base 23, the water pump shaft 5 is rotated, water is introduced into the pump casing 1 from the water inlet 6 at the top of the pump casing 1, and the pump seat 4 is immersed in water, the impeller 3 The rotating water flow collects along the water collecting guide 16 into the snail cavity water inlet 7, and under the action of the impeller 3, the water flows out through the worm line chamber water outlet 2, and the front bearing 18 and the rear bearing 20 on the pump base 4 are The heat generated by the rotation, through the constant flow of water, carries the heat out of the crevice chamber outlet 2 .

The above is only a preferred embodiment of the present invention and is not intended to limit the scope of the present invention.

Claims

A self-cooling water pump includes a pump casing, a vortex chamber water outlet and an impeller, the vortex chamber water outlet is disposed at a rear end of the pump casing, and the impeller is disposed in a vortex chamber water outlet, wherein the self-cooling water pump The utility model further comprises a pump seat, a water pump shaft front support, a water pump shaft rear support and a water pump shaft, wherein the bottom of the pump base is integrally connected with the lower part of the inner wall of the pump casing, the upper part of the pump base is upwardly convex, and the front end of the pump seat is along the radial direction and the inner wall of the front end of the pump casing. In the middle of the pump casing, a water inlet is arranged at the top of the pump casing, and a vortex cavity water inlet is arranged at a central position of the rear part of the pump casing, and the water pump shaft front support and the water pump shaft rear support are respectively disposed in the front part and the middle part of the pump seat, The water pump shafts are respectively arranged in the front support of the water pump shaft and the rear support of the water pump shaft, and the tail of the water pump shaft is connected to the impeller.
The self-cooling water pump according to claim 1, wherein the front portion of the pump base is upwardly connected to the corresponding inner wall of the upper portion of the pump casing, and a pump shaft front support and a pump shaft rear support are disposed between the pump seat. a lubrication chamber having an annular space, an oil injection hole and an oil discharge hole respectively disposed above the front portion of the pump casing and below the front portion of the pump casing, and the oil injection hole and the oil discharge hole are communicated with the lubrication chamber through the pump seat, and the oil injection hole of the pump casing and An oil seal and an oil drain seal are respectively disposed on the oil drain hole.
The self-cooling water pump according to claim 1, wherein the pump seat of the rear of the water pump shaft is provided with an alloy water seal, and the inner side of the alloy water seal is pressed against the arc surface of the water pump shaft in the alloy. An oil-water drain ring with an annular cavity is arranged on the pump seat in front of the water seal, and an oil-water drain hole is arranged on the pump seat below the corresponding position of the oil-water drain ring.
The self-cooling water pump according to claim 1, wherein a water collecting slope is provided at a water inlet of the worm chamber at the rear of the pump casing.
The self-cooling water pump according to claim 1, wherein the water pump shaft front support and the water pump shaft rear support are respectively constituted by a front axle chamber, a front bearing and a rear axle chamber, and a rear bearing, and the front bearing and the rear bearing are respectively disposed In the corresponding front axle chamber and rear axle chamber, a front bearing seal cover is fixed at the front end of the front axle chamber, and a rear bearing oil seal is disposed on the pump base behind the rear bearing.
The self-cooling water pump according to claim 5, wherein the diameter of the front bearing is larger than the diameter of the rear bearing.
The self-cooling water pump according to claim 1, wherein a mounting base is provided below the pump casing.