CN206175243U - A self priming pump - Google Patents
A self priming pump Download PDFInfo
- Publication number
- CN206175243U CN206175243U CN201621223871.0U CN201621223871U CN206175243U CN 206175243 U CN206175243 U CN 206175243U CN 201621223871 U CN201621223871 U CN 201621223871U CN 206175243 U CN206175243 U CN 206175243U
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- China
- Prior art keywords
- return
- backwater
- pump
- impeller
- chamber
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model relates to a self priming pump, including the pump body, the return bend of raising of intaking, import check valve, impeller, the impeller sets up in the spiral housing, and pump body inner chamber lower part is water inflow chamber, and upper portion is gas -liquid separation chamber, opens the backward flow hole that has the intercommunication spiral housing on the water inflow chamber wall thickness, and the backward flow hole has connect the wet return, normally opens return water skin door and sets up in the outer mouth of pipe of wet return, and water inflow chamber is equipped with visual return water chamber lid.
Description
Technical field
This utility model is related to a kind of self priming pump, specifically a kind of self priming pump.
Background technology
The return port design of traditional self priming pump is not close, pump after normal operation, pressure and pump discharge at blowback discharge orifice
Pressure is identical, and more than pressure in spiral case, therefore under normal circumstances, how many leakage rates of return port determines the efficiency of pump.
Ordinary circumstance, to guarantee gas-liquid separation in time, shortens self-priming time, and the size of general return port design is larger, and return port is in fortune
Vane edge is partly refluxed to during row, vertical impact is formed, causes pump hydraulic performance decline, these are that external-mix self-priming pump pump efficiency is low
One of the main reasons.
The content of the invention
For the problem that the self-priming efficiency of pump of prior art is reduced, this utility model provides a kind of simple structure, can have
Effect improves the self priming pump of pump efficiency.
The technical solution adopted in the utility model is：A kind of self priming pump, including the pump housing, the water inlet bend pipe raised, import be inverse
Only valve, impeller, impeller is arranged in volute casing, and pump housing inner chamber bottom is backwater room, and top is gas-liquid separation chamber, on backwater room's wall thickness
It is provided with the return port of connection volute casing, it is characterised in that：The return port is connected to return pipe, and normally opened backwater skin door is arranged at return pipe
Outer spout, backwater room is provided with visual backwater cavity lid.
Using above-mentioned technical proposal, the beneficial effects of the utility model are：Backwater cavity lid is designed with backwater room, chamber is opened
Lid, by conventional backflow hole return duct is provided with, and in return duct side skin door is designed with, and skin door is fixed by the metal of thin slice, skin
The sealing surface of door and the angled α in the downward-sloping inclined-plane of return pipe outer spout, under normal circumstances, backwater skin door is made in gravity
It is vertically arranged with, return pipe insertion blowback discharge orifice, and fastens.In self-priming state, backwater passes through gravity not after gas-liquid separation
It is disconnected that volute casing is entered by backwater room, return pipe, then gas-liquid separation is carried out with gas mixing by impeller rotation, move in circles.Now,
Due to being steam-water separation due to the main effect of impeller, lift is not set up, backwater cavity is less with volute casing pressure difference value, Pi Men
Because of deadweight and return pipe outer spout inclined-plane sealing surface natural separation, so as to ensure that backwater when self-priming is normally carried out.When pump it is complete
Into after self-priming, gas-liquid separation chamber's pressure rise is to, now backwater room and spiral case lower end return port pressure value generation consistent with lift
Larger difference, backwater outer spout inclined-plane sealing surface pressure reduction is larger, and under pressure, Pi Men is pasted with outer spout inclined-plane sealing surface
Close, return port closure, realize the automatic closure of service condition water pipe next time, pump now can ensure that and be damaged without backflow, so as to improve
The operational efficiency of pump.After parking, skin door naturally droops opening after backwater cavity pressure drop, and pump can reenter self-suction circulation
Pattern.Visual backwater cavity lid can conveniently monitor return port closure state, can be observed if necessary and adjust, and realize optimization.
Description of the drawings
Fig. 1 is this utility model structural representation.
In figure：The pump housing 1, bend pipe 2 of intaking, import check, 3, gas-liquid separation chamber 4, backwater room 5, backwater cavity lid 6, volute casing 7,
Impeller 8, return port 9, return pipe 10, normally opened backwater skin door 11.
Specific embodiment
It is described further below in conjunction with drawings and Examples.
Shown in Fig. 1：A kind of water inlet bend pipe 2, import non-return valve 3, impeller 8 that self priming pump includes the pump housing 1, raises, impeller 8 sets
It is placed in volute casing 7, the inner chamber bottom of the pump housing 1 is backwater room 5, top is gas-liquid separation chamber 4, connection snail is provided with the wall thickness of backwater room 5
The return port 9 of room 7, is connected to return pipe 10 on return port 9, normally opened backwater skin door 11 is arranged at the outer spout of return pipe, return pipe
Outer spout be downward-sloping inclined-plane, normally opened backwater skin door by deadweight correspondence the return pipe mouth of pipe be vertically arranged, backwater room is provided with can
Depending on backwater cavity lid 6.
Claims (1)
1. a kind of self priming pump, including the pump housing, the water inlet bend pipe raised, import non-return valve, impeller, impeller is arranged in volute casing, pump
Intracoelomic cavity bottom is backwater room, and top is gas-liquid separation chamber, and the return port of connection volute casing is provided with backwater room's wall thickness, and its feature exists
In：The return port is connected to return pipe, and normally opened backwater skin door is arranged at the outer spout of return pipe, and backwater room is provided with visual backwater cavity
Lid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621223871.0U CN206175243U (en) | 2016-11-15 | 2016-11-15 | A self priming pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621223871.0U CN206175243U (en) | 2016-11-15 | 2016-11-15 | A self priming pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206175243U true CN206175243U (en) | 2017-05-17 |
Family
ID=58684687
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621223871.0U Active CN206175243U (en) | 2016-11-15 | 2016-11-15 | A self priming pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206175243U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106762688A (en) * | 2016-11-15 | 2017-05-31 | 江苏芬奇工业设备制造有限公司 | A kind of self priming pump |
-
2016
- 2016-11-15 CN CN201621223871.0U patent/CN206175243U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106762688A (en) * | 2016-11-15 | 2017-05-31 | 江苏芬奇工业设备制造有限公司 | A kind of self priming pump |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |