Frost crack prevention water pump

A technology for anti-freeze cracking and water pumps, which is applied in the direction of pumps, pump components, non-variable pumps, etc. It can solve the problems of difficult thawing, heating and melting ice, and difficult problems, and achieves the effect of simple structure
CN101846102BActive Publication Date: 2012-07-25LEO GRP ZHEJIANG PUMP CO LTD
8 Cites 6 Cited by

Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Patents(China)
Current Assignee / Owner
LEO GRP ZHEJIANG PUMP CO LTD
Publication Date
2012-07-25

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention relates to water pump equipment, in particular to a frost crack prevention water pump which aims to solve the problem that the traditional anti-freezing water pump cannot fundamentally prevent frost cracks, while some people propose that the inner wall of a water meter or a pipeline is provided with an expansion layer, though the frost cracks can be prevented, freeze is difficult to thaw from outside after icing. The frost crack prevention water pump comprises a pump case, an impeller and a flow guide pipe, wherein the impeller is externally provided with a water outlet cover with an axle center hole, and the water outlet cover divides the internal space of the pump case into an impeller chamber and a front chamber which are mutually communicated; the flow guide pipe is arranged in the front chamber, and one end of the flow guide pipe is connected with a water inlet pipe extending into the pump case, while the other end is connected with the axle center hole of the water outlet cover; the flow guide pipe is externally sleeved with an elastic expansion piece; and the elastic expansion piece is large at both ends and small in the middle, provided with an axle center hole and made of a non-hygroscopic elastic material. The frost crack prevention water pump has the advantages of simple structure, frost crack prevention and easier thawing and is widely suitable for various cold environments.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to a water pump device, in particular to an anti-freezing and cracking water pump. Background technique

[0002] The Chinese utility model patent published on May 12, 2010 with the publication number CN 201461453U discloses a kind of "antifreeze water pump". , can not fundamentally prevent freezing and cracking, and if it is not used outdoors for a long time in winter, the water stored inside will still freeze, and it is difficult to heat and melt from the outside after freezing.

[0003] On November 21, 2007, the publication number is CN200979077Y, which discloses an antifreeze cracking device for pipe fittings, containers and water meters. , the telescopic layer shrinks under pressure, thereby avoiding cracking.

[0004] However, the expansion layer adopts materials with poor thermal conductivity such as rubber and foam plastic. After adding the expansion layer, although the equipment will not freeze and crack, once it freezes...

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