CN106499638A - A kind of exterior mixing return port self-closing self priming pump - Google Patents
A kind of exterior mixing return port self-closing self priming pump Download PDFInfo
- Publication number
- CN106499638A CN106499638A CN201611002015.7A CN201611002015A CN106499638A CN 106499638 A CN106499638 A CN 106499638A CN 201611002015 A CN201611002015 A CN 201611002015A CN 106499638 A CN106499638 A CN 106499638A
- Authority
- CN
- China
- Prior art keywords
- return port
- backwater
- self
- return
- pipe
- Prior art date
- 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.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D9/00—Priming; Preventing vapour lock
- F04D9/02—Self-priming pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/44—Fluid-guiding means, e.g. diffusers
- F04D29/445—Fluid-guiding means, e.g. diffusers especially adapted for liquid pumps
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present invention relates to a kind of exterior mixing return port self-closing self priming pump, including the pump housing, the water inlet bend pipe that raises, import non-return valve, impeller, impeller is arranged in volute casing, pump housing inner chamber bottom is backwater room, top is gas-liquid separation chamber, the return port of connection volute casing is provided with backwater room's wall thickness, and return port is provided with normally opened backwater skin door.
Description
Technical field
The present invention relates to a kind of self priming pump, specifically a kind of exterior mixing return port self-closing 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, for guaranteeing 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 being partly refluxed to during row, vertical impact being formed, is caused pump hydraulic performance decline, these are that external-mix self-priming pump pump efficiency is low
One of the main reasons.
Content of the invention
For the problem that the self-priming efficiency of pump of prior art reduces, the invention provides a kind of simple structure, effectively can carry
The exterior mixing return port self-closing self priming pump of high pump efficiency.
The technical solution used in the present invention is：A kind of exterior mixing return port self-closing self priming pump, including the pump housing, entering of raising
Water bend pipe, import non-return valve, impeller, impeller are arranged in volute casing, and pump housing inner chamber bottom is backwater room, and top is gas-liquid separation
Room, is provided with the return port of connection volute casing on backwater room's wall thickness, it is characterised in that：The return port is provided with normally opened backwater skin door.
Further, return pipe is connected on the return port, and normally opened backwater skin door is arranged at the outer spout of return pipe.
Further, the outer spout of the return pipe is downward-sloping inclined-plane, and normally opened backwater skin door is by the corresponding backwater of deadweight
The pipe mouth of pipe is vertically arranged.
Yet further, the backwater room is provided with visual backwater cavity lid.
Above-mentioned technical proposal is adopted, the invention has the beneficial effects as follows：Backwater cavity lid is designed with backwater room, chamber lid is opened,
Conventional backflow hole being provided with return duct, skin door being designed with return duct side, skin door is fixed by the metal of thin slice, skin door
Sealing surface and the angled α in the downward-sloping inclined-plane of return pipe outer spout, under normal circumstances, backwater skin door is under gravity
It is vertically arranged, return pipe inserts blowback discharge orifice, and fastens.In self-priming state, after gas-liquid separation backwater by gravity constantly by
Backwater room, return pipe enter volute casing, then carry out gas-liquid separation by impeller rotation with gas mixing, move in circles.Now, due to
As the main effect of impeller is steam-water separation, lift is not set up, backwater cavity is less with volute casing pressure difference value, Pi Menyin is certainly
Weight and return pipe outer spout inclined-plane sealing surface natural separation, so that ensure that backwater when self-priming is normally carried out.When pump is completed certainly
After suction, gas-liquid separation chamber's pressure rise is extremely consistent with lift, and now backwater room produces larger with spiral case lower end return port pressure value
Difference, backwater outer spout inclined-plane sealing surface pressure reduction are larger, and under pressure, Pi Men is fitted with outer spout inclined-plane sealing surface, return
Discharge orifice is closed, and realizes the automatic closure of service condition water pipe next time, and pump now can ensure that and damage without backflow, so as to improve the fortune of pump
Line efficiency.After parking, after backwater cavity pressure drop, skin door naturally droops opening, 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 optimizing.
Description of the drawings
Fig. 1 is schematic structural view of the invention.
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：The water inlet bend pipe 2, import that a kind of exterior mixing return port self-closing self priming pump includes the pump housing 1, raise is inverse
Only valve 3, impeller 8, impeller 8 are arranged in volute casing 7, and 1 inner chamber bottom of the pump housing is backwater room 5, and top is gas-liquid separation chamber 4, backwater
The return port 9 of connection volute casing 7 is provided with 5 wall thickness of room, return pipe 10 is connected on return port 9, and normally opened backwater skin door 11 is arranged at back
The outer spout of water pipe, the outer spout of return pipe is downward-sloping inclined-plane, and it is vertical that normally opened backwater skin door is corresponded to the return pipe mouth of pipe by deadweight
Straight setting, backwater room are provided with visual backwater cavity lid 6.
Claims (4)
1. a kind of exterior mixing return port self-closing self priming pump, including the pump housing, the water inlet bend pipe that raises, import non-return valve, impeller, leaf
Wheel is arranged in volute casing, and pump housing inner chamber bottom is backwater room, and top is gas-liquid separation chamber, is provided with connection volute casing on backwater room's wall thickness
Return port, it is characterised in that：The return port is provided with normally opened backwater skin door.
2. a kind of exterior mixing return port self-closing self priming pump according to claim 1, is characterized in that：Connect on the return port
There are return pipe, normally opened backwater skin door to be arranged at the outer spout of return pipe.
3. a kind of exterior mixing return port self-closing self priming pump according to claim 2, is characterized in that：Outside the return pipe
The mouth of pipe is downward-sloping inclined-plane, and by deadweight, correspondingly the return pipe mouth of pipe is vertically arranged normally opened backwater skin door.
4. a kind of exterior mixing return port self-closing self priming pump according to claim 1, is characterized in that：The backwater room is provided with
Visual backwater cavity lid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611002015.7A CN106499638A (en) | 2016-11-15 | 2016-11-15 | A kind of exterior mixing return port self-closing self priming pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611002015.7A CN106499638A (en) | 2016-11-15 | 2016-11-15 | A kind of exterior mixing return port self-closing self priming pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106499638A true CN106499638A (en) | 2017-03-15 |
Family
ID=58324419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611002015.7A Pending CN106499638A (en) | 2016-11-15 | 2016-11-15 | A kind of exterior mixing return port self-closing self priming pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106499638A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109058094A (en) * | 2018-10-15 | 2018-12-21 | 上海中韩杜科泵业制造有限公司 | A kind of Novel flushing pressure type water inlet-outlet segment |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0599186A (en) * | 1991-10-14 | 1993-04-20 | Matsushita Electric Ind Co Ltd | Self-priming pump |
| JP2000337286A (en) * | 1999-05-31 | 2000-12-05 | Matsushita Electric Ind Co Ltd | Self-priming type pump |
| CN1328216A (en) * | 2001-08-02 | 2001-12-26 | 董铁民 | Non-vacuumizing start of large centrifugal water pump |
| CN201078334Y (en) * | 2007-05-22 | 2008-06-25 | 陈彪 | Self-priming type centrifugal pump |
| CN101581312A (en) * | 2009-06-10 | 2009-11-18 | 江苏大学 | Mass-flow self-sucking pump |
| CN104819157A (en) * | 2015-04-21 | 2015-08-05 | 江苏大学 | Self-suction centrifugal pump |
| CN204591688U (en) * | 2014-11-21 | 2015-08-26 | 江苏国泉泵业制造有限公司 | A kind of internal-mixing self-priming pump with flap valve return port |
| CN206175242U (en) * | 2016-11-15 | 2017-05-17 | 江苏芬奇工业设备制造有限公司 | External mixing type backward flow hole self -closing self priming pump |
-
2016
- 2016-11-15 CN CN201611002015.7A patent/CN106499638A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0599186A (en) * | 1991-10-14 | 1993-04-20 | Matsushita Electric Ind Co Ltd | Self-priming pump |
| JP2000337286A (en) * | 1999-05-31 | 2000-12-05 | Matsushita Electric Ind Co Ltd | Self-priming type pump |
| CN1328216A (en) * | 2001-08-02 | 2001-12-26 | 董铁民 | Non-vacuumizing start of large centrifugal water pump |
| CN201078334Y (en) * | 2007-05-22 | 2008-06-25 | 陈彪 | Self-priming type centrifugal pump |
| CN101581312A (en) * | 2009-06-10 | 2009-11-18 | 江苏大学 | Mass-flow self-sucking pump |
| CN204591688U (en) * | 2014-11-21 | 2015-08-26 | 江苏国泉泵业制造有限公司 | A kind of internal-mixing self-priming pump with flap valve return port |
| CN104819157A (en) * | 2015-04-21 | 2015-08-05 | 江苏大学 | Self-suction centrifugal pump |
| CN206175242U (en) * | 2016-11-15 | 2017-05-17 | 江苏芬奇工业设备制造有限公司 | External mixing type backward flow hole self -closing self priming pump |
Non-Patent Citations (1)
| Title |
|---|
| 关醒凡: "《现代泵理论与设计》", 30 April 2011 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109058094A (en) * | 2018-10-15 | 2018-12-21 | 上海中韩杜科泵业制造有限公司 | A kind of Novel flushing pressure type water inlet-outlet segment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170315 |
|
| WD01 | Invention patent application deemed withdrawn after publication |