CN202545271U - Negative-pressure water-sucking centrifugal pump - Google Patents
Negative-pressure water-sucking centrifugal pump Download PDFInfo
- Publication number
- CN202545271U CN202545271U CN2012201942529U CN201220194252U CN202545271U CN 202545271 U CN202545271 U CN 202545271U CN 2012201942529 U CN2012201942529 U CN 2012201942529U CN 201220194252 U CN201220194252 U CN 201220194252U CN 202545271 U CN202545271 U CN 202545271U
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- centrifugal pump
- vacuum tank
- water
- pipe
- vacuum
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Abstract
The utility model discloses a negative-pressure water-sucking centrifugal pump, comprising a centrifugal pump which is equipped with a water inlet pipe and a water outlet pipe. A vacuum tank is arranged at the water inlet pipe; a water-type bottom valve is arranged between the vacuum tank and water source; a vent valve and a pressure gage are arranged at the vacuum tank; a vacuum maintaining return pipe connects the vacuum tank with the water outlet pipe; an electric butterfly valve is arranged at the vacuum maintaining return pipe; the pressure gage and the electric butterfly valve are connected with a control device. The centrifugal pump is economical and applicable and stable in operation.
Description
Technical field
The utility model relates to a kind of water supply equipment, a kind of specifically negative pressure suction centrifugal pump.
Background technique
Middle-size and small-size centrifugal pump is generally taked the Starting mode of malleation water inlet, and this water intake mode requires pumping station must adopt the semi-underground type pumping station, and is moist in the pump house, drainage condition is poor, make that water pump is prone to corrosion phenomena takes place, and the civil engineering costs in pump house and pond is higher.And the water inlet of centrifugal pump negative pressure the time need be disposed reliable vacuum pump, makes that equipment increases in the pump house, and it is complicated that system becomes.Simultaneously, employing can negative pressure the special water pump of suction, like Strong self priming pump, vertical long shaft pump etc., cost an arm and a leg, be unfavorable for reducing engineering cost.
In Chinese patent CN2585991Y disclosed " centrifugal pump self-priming apparatus ", the centrifugal pump self-priming apparatus is made up of airtight negative-pressure cup, suction pipe and outlet pipe, and the mouth of pipe of outlet pipe one end is in the bottom of negative-pressure cup, and the other end is communicated with the centrifugal pump import.The suction pipe one end mouth of pipe is at the top of negative-pressure cup, the other end and the fluid connection that will extract.
When the negative-pressure cup in this patent is not worked at centrifugal pump for a long time, can get into air, centrifugal pump can not normally start, and need carry out pump priming and just can carry out work, has brought inconvenience to use.
The model utility content
The utility model technical issues that need to address provide a kind of economic and practical, stable negative pressure suction centrifugal pump.
For solving the problems of the technologies described above, the technological scheme that the utility model adopted is:
Negative pressure suction centrifugal pump; Comprise the centrifugal pump of bringing water pipe and outlet pipe into, intake pipe is provided with vacuum tank, is provided with the above-water type bottom valve between said vacuum tank and the water source; Vacuum tank is provided with outlet valve, pressure gauge; Be connected with vacuum between said vacuum tank and the outlet pipe and keep return pipe, vacuum is kept return pipe and is provided with electric butterfly valve, and said pressure gauge, electric butterfly valve connect control gear.
The improvement of the utility model is: the tank body that said vacuum tank is welded into for the steel pipe bigger than intake pipe caliber.
Because the technological progress of having adopted technique scheme, the utility model to obtain is:
The utility model is installed simple, easy operating, economic and practical, safe and reliable.The above-water type bottom valve of the utility model, pressure gauge, outlet valve, electric butterfly valve are ripe device; Can purchase; And owing to all adopt undersized device, low price, vacuum tank can adopt the steel pipe field fabrication bigger than intake pipe caliber; The utility model turn on pump work at any time, the pump priming program when not needing each turn on pump.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Wherein, 1. intake pipe, 2. above-water type bottom valve, 3. vacuum tank, 4. outlet valve, 5. pressure gauge, 6. centrifugal pump, 7. outlet pipe, 8. electric butterfly valve, 9. vacuum is kept return pipe.
Embodiment
Below in conjunction with description of drawings the utility model is explained further details:
As shown in Figure 1, negative pressure suction centrifugal pump comprises centrifugal pump 6; The water intake of centrifugal pump 6 is connected with intake pipe 1; The water outlet of centrifugal pump 6 is connected with outlet pipe 7, is welded with vacuum tank 3 on the intake pipe 1, and vacuum tank 3 is by the tank body that is welded into than the big steel pipe of intake pipe 1 caliber.Between vacuum tank 3 and water source, be provided with above-water type bottom valve 2; Above-water type bottom valve 2 has played the effect that prevents the aqueous reflux back pool, is provided with vacuum between vacuum tank 3 and the outlet pipe 7 and keeps return pipe 9, and vacuum is kept return pipe 9 one ends and is connected with outlet pipe 7; The other end is connected with vacuum tank 3; Vacuum is kept electric butterfly valve 8 is installed on the return pipe 9, is separately installed with outlet valve 4, pressure gauge 5 above the said vacuum tank 3, and pressure gauge 5 is connected with control gear respectively with electric butterfly valve 8.
Need start centrifugal pump 6 with filling water in centrifugal pump 6 and the vacuum tank 3 before starting for the first time centrifugal pump 6, the water in the intake pipe 1 leans on the draft of centrifugal pump 6 to be full of water, and the water in the pond is constantly aspirated, continuously operation; Above-water type bottom valve 2 has played the effect that prevents the aqueous reflux back pool after the termination of pumping; And be full of water in the vacuum tank 3, being in a kind of inside does not almost have air, when making centrifugal pump startup 6 next time; Can in vacuum tank 3, absorb water smoothly; Water is siphoned away in the vacuum tank 3, vacuum up, and the water in the pond just adds in the vacuum tank 3 through intake pipe 1.When centrifugal pump 6 is in halted state for a long time, may entrained air in the vacuum tank 3, make that the air pressure in the vacuum tank 3 raise; Can survey the air pressure in the vacuum tank 3 through the detection effect of pressure gauge 5, when air pressure was higher than a certain value, pressure gauge 5 fed back to control gear to pressure signal; Control gear can be opened electric butterfly valve 8, and starts centrifugal pump 6, and part water is kept return pipe 9 through outlet pipe 7, vacuum successively and is back in the vacuum tank 3; Make vacuum tank 3 internal pressures become big; Leaked-in air is discharged through outlet valve 4 in the vacuum tank 3, comes back to high vacuum state in the vacuum tank 3, and centrifugal pump 6 is out of service.
Through these technological means Ordinary Centrifugal Pumps is reached and open the successful effect of pump diversion simultaneously; Success rate 100%; Its function fully can be suitable with centrifugal pump malleation water inlet technology; But cost will reduce greatly, and can avoid the various drawbacks of semi-underground type pump house, can be used as the technology that various water intake pumping stations are extensively promoted.
Claims (2)
1. negative pressure suction centrifugal pump; Comprise the centrifugal pump (6) of bringing water pipe (1) and outlet pipe (7) into; Intake pipe (1) is provided with vacuum tank (3); It is characterized in that: be provided with above-water type bottom valve (2) between said vacuum tank (3) and the water source, vacuum tank (3) is provided with outlet valve (4), pressure gauge (5), is connected with vacuum between said vacuum tank (3) and the outlet pipe (7) and keeps return pipe (9); Vacuum is kept return pipe (9) and is provided with electric butterfly valve (8), and said pressure gauge (5), electric butterfly valve (8) connect control gear.
2. negative pressure suction centrifugal pump according to claim 1 is characterized in that: the tank body of said vacuum tank (3) for being welded into than the big steel pipe of intake pipe (1) caliber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201942529U CN202545271U (en) | 2012-05-03 | 2012-05-03 | Negative-pressure water-sucking centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201942529U CN202545271U (en) | 2012-05-03 | 2012-05-03 | Negative-pressure water-sucking centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202545271U true CN202545271U (en) | 2012-11-21 |
Family
ID=47165914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201942529U Expired - Lifetime CN202545271U (en) | 2012-05-03 | 2012-05-03 | Negative-pressure water-sucking centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202545271U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109026735A (en) * | 2018-08-23 | 2018-12-18 | 淮南市阶梯电子科技有限公司 | It is a kind of suitable for there is the drainage arrangement of bottom valve water pump |
-
2012
- 2012-05-03 CN CN2012201942529U patent/CN202545271U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109026735A (en) * | 2018-08-23 | 2018-12-18 | 淮南市阶梯电子科技有限公司 | It is a kind of suitable for there is the drainage arrangement of bottom valve water pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121121 |
|
| CX01 | Expiry of patent term |