Unlock instant, AI-driven research and patent intelligence for your innovation.

Corrosion-resistant high-pressure vertical centrifugal pump

A vertical centrifugal and corrosion-resistant technology, applied in the direction of non-variable pumps, non-displacement pumps, pumps, etc., can solve the problems of affecting the service life of the machine seal, the local temperature rise of the machine seal, and the temperature rise of the machine seal, etc., to achieve Improve effectiveness and safety, prevent secondary pollution, and reduce the effect of mechanical seal temperature

Pending Publication Date: 2021-02-05
宜兴市宙斯泵业有限公司
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it has been proved by operation practice that this cooling system is only suitable for the shaft seal of the pump whose working pressure in the pump cavity of the mechanical seal is lower than 0-0.4MPa. The specific pressure between the working surfaces of the dynamic and static rings of the seal must be increased, otherwise the air in the seal cavity will be trapped in the air, and driven by the pressure of the fluid in the pump cavity, it will leak through the end faces of the dynamic and static rings of the mechanical seal. , which in turn leads to the failure of the mechanical seal in contact with the slurry
[0007] In order to prevent the mechanical seal from leaking air, the effective method is to increase the pressure between the dynamic and static ring working surfaces, but after increasing the pressure, another problem arises: the temperature of the mechanical seal rises sharply, sometimes to 100-130°C, only relying on the air-cooling system in this technology to cool the machine seal cannot effectively cool the heat generated by the dynamic and static rings of the machine seal during operation, and the local temperature of the machine seal will still rise and stabilize to Above 80-90℃
The adverse result is to directly affect the service life of the mechanical seal

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Corrosion-resistant high-pressure vertical centrifugal pump
  • Corrosion-resistant high-pressure vertical centrifugal pump
  • Corrosion-resistant high-pressure vertical centrifugal pump

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Embodiment 1: as figure 1 , 2, 3, a corrosion-resistant high-pressure vertical centrifugal pump, the pump body is divided into a pump cover 2 and a pump casing 1 from top to bottom, the pump body is installed on the mounting base 12, and the bottom of the pump casing 1 is provided with a suction port 1.1, A long handle impeller 3 is arranged in the cavity of the pump casing 1, and the long handle 3.1 of the impeller extends vertically out of the pump cover 2. The main shaft of the motor 11 is provided with a hanging screw 8 connected to the long handle 3.1 of the impeller, and the shaft seal device is arranged on the long handle 3.1, and the shaft seal The device includes an externally mounted mechanical seal 4, the seals are dynamic and static rings 4.2 and 4.1, and the externally mounted mechanical seal 4 is provided with a liquid storage pan sleeve 5, which is fixed to the pump cover 2 through screws to store the liquid The disc sleeve 5 is crimped on the static rin...

Embodiment 2

[0042] Embodiment 2: as Figure 4 As shown, with reference to Embodiment 1, the rest of the features remain unchanged, the only change is that the long handle 3.1 of the impeller extends out of the pump cover 2 vertically, the main shaft 18 is provided with a hanging screw 8 to connect the long handle 3.1 of the impeller, the main shaft 18 passes through the bearing bracket 19, passes through the The coupling 20 connects the main shaft of the motor 11 .

Embodiment 3

[0043] Embodiment 3: as Figure 5 As shown, with reference to Example 1, the rest of the features remain unchanged, and the side wall of the liquid storage tray cover 6 is additionally provided with a liquid inlet 5.1 and an overflow hole 5.2, and the outside of the centrifugal pump is provided with a liquid storage container 14, the liquid storage container 14, the liquid inlet The hole 5.1 communicates with the conduit 15, and the conduit 15 is provided with a liquid conveyor 16; the overflow hole 5.2 and the liquid storage container 14 communicate with each other through the return conduit 17. The liquid conveyor 16 is a micropump. In order to facilitate the return of the coolant overflowing from the overflow hole to the liquid storage container to participate in circulating cooling, an effective method is to install the liquid storage container slightly lower than the position of the mechanical seal of the pump.

[0044] In Examples 1-3, the long handle impeller 3 is a st...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a corrosion-resistant high-pressure vertical centrifugal pump. A pump body comprises a pump shell, a pump cover, a long-handle impeller in the pump shell, a main shaft connected with the long-handle impeller and a suction inlet located in the bottom end of the pump body; a long handle of the long-handle impeller penetrates out of the pump body to be fixedly connected with the main shaft, the other end of the main shaft is connected with a motor, a shaft sealing device is arranged on the long handle of the impeller, the long handle of the impeller is vertically arrangedor obliquely arranged to form an included angle of 20-70 degrees with the horizontal plane, the shaft sealing device comprises a first shaft seal, a liquid storage disc sleeve is arranged on the periphery of the first shaft seal, a liquid storage cavity is formed between the liquid storage disc sleeve and a sealing piece of the first shaft seal, and cooling liquid is injected into the liquid storage cavity and directly makes contact with the sealing piece of the first shaft seal.

Description

technical field [0001] The invention relates to the field of manufacturing centrifugal slurry pumps, in particular to a high-pressure vertical centrifugal pump for conveying. Background technique [0002] Centrifugal slurry pumps are a large number of slurry conveying machinery used in various domestic industrial fields. There are nearly one million centrifugal slurry pumps in operation across the country. [0003] In the prior art, common shaft seals for centrifugal pumps conveying slurry include drive and static ring mechanical seals, rubber ring seals with lips, packing seals, etc. The contact produces abrasion, which causes the pump shaft seal to be easily damaged. So far, there is still no ideally sealed slurry pump on the market at home and abroad. [0004] Moreover, in order to wash and cool the pump shaft seal, an external cooling water device must be installed, which is both troublesome and insufficient in cooling water consumption, and there is also the worry of e...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/08F04D29/12F04D29/58F04D29/06F04D29/22F04D7/04F04D7/06F04D13/06
CPCF04D7/04F04D7/06F04D13/06F04D29/061F04D29/086F04D29/126F04D29/2227F04D29/588
Inventor 蒋凌超蒋龙福夏鹏飞
Owner 宜兴市宙斯泵业有限公司