CN211116543U

CN211116543U - Pump body backflow prevention safety device

Info

Publication number: CN211116543U
Application number: CN201922358213.2U
Authority: CN
Inventors: 叶高; 刘斌; 程必富
Original assignee: Chongqing Hesun Pump Co ltd
Current assignee: Chongqing Hesun Pump Co ltd
Priority date: 2019-12-25
Filing date: 2019-12-25
Publication date: 2020-07-28
Anticipated expiration: 2029-12-25

Abstract

The utility model belongs to the technical field of the water pump technique and specifically relates to a pump body flowing back prevention safeties, which comprises a pipe body, the equal fixedly connected with ring flange in body both ends, the middle part rigidity of body inner wall is connected with the limiting plate, the water conservancy diversion hole has been seted up to the middle part position of limiting plate, fixedly connected with dead lever on the inner wall of body one end both sides, two the relative inboard fixedly connected with fixed disk of dead lever, fixed disk one side fixedly connected with spring, spring other end fixedly connected with connecting block, just the spring is in tensile state, connecting block opposite side fixedly connected with is sealed to fill up, sealed opposite side fixedly connected with closing plate that fills up, the closing plate is circular, and the diameter of closing plate is greater than the diameter in water conservancy diversion hole. The utility model discloses have the condition that prevents that liquid from appearing flowing backward, play the effect of protection to the pump body.

Description

Pump body backflow prevention safety device

Technical Field

The utility model relates to a water pump technical field especially relates to a pump body prevents flowing backward safeties.

Background

A pump is a machine that delivers or pressurizes a fluid. It transfers the mechanical energy of the prime mover or other external energy to the liquid, causing the liquid energy to increase. The pump is mainly used for conveying liquids such as water, oil, acid-base liquid, emulsion, suspoemulsion and liquid metal, can also convey liquid, gas mixture and contain the liquid of suspension solid, when the pump body was transported liquid, has a power failure suddenly and caused output liquid backward flow to flow, but does not have among the prior art to preventing flowing backward and carry out the device of protection, can cause the damage of damaging the pump body and motor, cause economic loss.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defect that the pump body can not prevent the backflow in the prior art and providing a safety device for preventing the backflow of the pump body.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a pump body flowing backwards safeties, includes the body, the equal fixedly connected with ring flange in body both ends, the middle part position fixedly connected with limiting plate of body inner wall, the water conservancy diversion hole has been seted up to the middle part position of limiting plate, fixedly connected with dead lever on the inner wall of body one end both sides, two the relative inboard fixedly connected with fixed disk of dead lever, fixed disk one side fixedly connected with spring, spring other end fixedly connected with connecting block, just the spring is in tensile state, connecting block opposite side fixedly connected with is sealed to fill up, sealed opposite side fixedly connected with closing plate, the closing plate is circular, and the diameter of closing plate is greater than the diameter in water conservancy diversion hole, one of them through bolt fixedly connected with pump body.

Preferably, the inner wall of the other end of the tube body is fixedly connected with a limiting rod.

Preferably, a connecting rod is fixedly connected to the position of each of two ends between the limiting rod and the limiting plate, a sliding sleeve is sleeved on the connecting rod, and the sliding sleeve is fixedly connected with the sealing plate.

Preferably, the spring is a stainless steel spring.

The utility model provides a pump body prevents flowing backward safeties, beneficial effect lies in: through the design of spring, sealed pad, limiting plate, water conservancy diversion hole, prevent when having a power failure that liquid appears and flow backward, cause the condition that motor and pump body damaged to appear, play the effect of protection to the pump body.

Drawings

Fig. 1 is a schematic structural view of a pump body backflow prevention safety device provided by the present invention;

FIG. 2 is a side view of a pump body backflow prevention safety device of the present invention shown in FIG. 1;

fig. 3 is an enlarged view of a portion a in fig. 1 of a pump body backflow prevention safety device provided by the present invention.

In the figure: the pump comprises a flange plate 1, a pipe body 2, a pump body 3, a fixed disc 4, a fixed rod 5, a spring 6, a flow guide hole 7, a limiting plate 8, a connecting block 9, a limiting rod 10, a sealing plate 11, a sealing gasket 12, a connecting rod 13 and a sliding sleeve 14.

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.

Example 1

Referring to fig. 1-3, a pump body backflow prevention safety device comprises a pipe body 2, wherein two ends of the pipe body 2 are fixedly connected with flange plates 1, the middle position of the inner wall of the pipe body 2 is fixedly connected with a limiting plate 8, the middle position of the limiting plate 8 is provided with a flow guide hole 7, the inner walls of two sides of one end of the pipe body 2 are fixedly connected with fixing rods 5, the opposite inner sides of the two fixing rods 5 are fixedly connected with a fixing plate 4, one side of the fixing plate 4 is fixedly connected with a spring 6, the other end of the spring 6 is fixedly connected with a connecting block 9, the spring 6 is a stainless steel spring, the other side of the connecting block 9 is fixedly connected with a sealing gasket 12, the other side of the sealing gasket 12 is fixedly connected with a sealing plate 11, the sealing plate 11 is circular, the diameter of the sealing plate 11 is, when the pump body 3 discharge liquid, the flow of liquid can promote spring 6 by tensile, removes sealed the 12 that seal up to water conservancy diversion hole 7 sealed to play the effect that switches on to body 2, when having a power failure, because spring 6's restoring force, with sealed 12 firm butt on limiting plate 8 of filling up, seal up water conservancy diversion hole 7, prevented that the condition of flowing backward from appearing in liquid.

Example 2

Referring to fig. 1-3, as another preferred embodiment of the present invention, the difference from embodiment 1 is that a limiting rod 10 is fixedly connected to the inner wall of the other end of the pipe body 2, and the design of the limiting rod 10 is used to limit the position of the sealing plate 11, so that the spring 6 is always within the elastic limit, and the spring 6 is prevented from being damaged.

Example 3

Referring to fig. 3, as the utility model discloses a another preferred embodiment, the difference with embodiment 2 lies in, the equal fixedly connected with connecting rod 13 in both ends position between gag lever post 10 and the limiting plate 8, the cover is equipped with sliding sleeve 14 on connecting rod 13, sliding sleeve 14 and closing plate 11 fixed connection, through the design of sliding sleeve 14 and connecting rod 13, play spacing effect to closing plate 11, prevent that closing plate 11 when opening, cause the condition that skew appears in spring 6, be favorable to the linkage effect at the both ends of spring 6.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A pump body backflow prevention safety device comprises a pipe body (2) and is characterized in that flange plates (1) are fixedly connected to two ends of the pipe body (2), a limiting plate (8) is fixedly connected to the middle position of the inner wall of the pipe body (2), a flow guide hole (7) is formed in the middle position of the limiting plate (8), fixing rods (5) are fixedly connected to the inner walls of two sides of one end of the pipe body (2), two fixing rods (5) are fixedly connected to a fixing disc (4) on the inner side of the fixing disc (4), a spring (6) is fixedly connected to one side of the fixing disc (4), a connecting block (9) is fixedly connected to the other end of the spring (6), the spring (6) is in a stretching state, a sealing pad (12) is fixedly connected to the other side of the connecting block (9), a sealing plate (, the diameter of the sealing plate (11) is larger than that of the diversion hole (7), and one of the flange plates (1) is fixedly connected with the pump body (3) through bolts.

2. The pump body backflow prevention safety device according to claim 1, wherein a limiting rod (10) is fixedly connected to the inner wall of the other end of the tube body (2).

3. The pump body backflow prevention safety device according to claim 2, wherein a connecting rod (13) is fixedly connected to both ends of the space between the limiting rod (10) and the limiting plate (8), a sliding sleeve (14) is sleeved on the connecting rod (13), and the sliding sleeve (14) is fixedly connected with the sealing plate (11).

4. A pump body anti-backflow safety device according to claim 1, characterized in that the spring (6) is a stainless steel spring.