CN207454290U - A kind of centrifugal pump drainage tank - Google Patents
A kind of centrifugal pump drainage tank Download PDFInfo
- Publication number
- CN207454290U CN207454290U CN201721368401.8U CN201721368401U CN207454290U CN 207454290 U CN207454290 U CN 207454290U CN 201721368401 U CN201721368401 U CN 201721368401U CN 207454290 U CN207454290 U CN 207454290U
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- centrifugal pump
- top plate
- tank body
- oblique top
- drainage tank
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Abstract
The utility model discloses a kind of centrifugal pump drainage tanks, and including tank body, the top plate of tank body includes oblique top plate and ceiling, and one end of oblique top plate is connected with ceiling, and the height of the oblique top plate other end is higher than the height of ceiling；Priming valve on ceiling is installed, air bleeding valve is installed on oblique top plate；The side wall of tank body is connected with suction hose and drainpipe.Solve the problems, such as that centrifugation suction lift of pump is restricted in the prior art and anti-cavitation ability reduces, the utility model can improve the anti-cavitation ability of the suction head sum of centrifugal pump.
Description
Technical field
The utility model is related to centrifuge pump technical field more particularly to a kind of centrifugal pump drainage tank.
Background technology
Drainage tank is a kind of ground water absorption device for centrifugal pump, and centrifugal pump is made to become self filling type water suction from drawing-in type water suction, is drawn
The application of water pot can make ground type centrifugation water pump suction pipe that need not fill bottom valve, water-filling quickly can start simultaneously automatically, save and built
Traditionally lower or semi-underground self-priming Water pumping plant expense is made, while avoids the possibility that water pump under fortuitous event is flooded,
With the incomparable effect of immersible pump, stock submerged pump, in the industrial production extensive use.
But in actual production, since drainage tank sucking liquid level and the factors such as pump setting height(from bottom) influence, using common
Drainage tank is unable to reach suction head, must have certain distance and the tank deck gaseous phase volume small there are suction hose top and tank deck inner wall
Contradiction.Referring to Fig. 1, water suction pipe end liquid flows to after being collided with tank deck occurs 180 degree steering, increases pump inlet pipe
Road drag losses, causes suction head to be restricted, and anti-cavitation ability reduces.Furthermore suction hose is built in drainage tank, cause
It by dielectric corrosion, easily corrosion failure inside and outside suction hose, and is not easy to find, there is certain influence on operational reliability.
Utility model content
The purpose of this utility model is to provide a kind of centrifugal pump drainage tanks, and it is high to solve centrifugal pump sucking in the prior art
The problem of degree is restricted and anti-cavitation ability reduces, the utility model can improve the anti-gas of the suction head sum of centrifugal pump
Erosion ability.
In order to achieve the above objectives, the utility model adopts the following technical solution：
The utility model provides a kind of centrifugal pump drainage tank, and including tank body, the top plate of tank body includes oblique top plate and flat-top
Plate, one end of oblique top plate are connected with ceiling, and the height of the oblique top plate other end is higher than the height of ceiling；It is equipped on ceiling
Priming valve is equipped with air bleeding valve on oblique top plate；The side wall of tank body is connected with suction hose and drainpipe.
Further, the utility model is also characterized by：
The height of suction hose is higher than the height of drainpipe.
Suction hose is installed on the outside of tank body
Elbow is further included, suction hose is connected by the side wall of elbow and tank body.
Suction hose is integrated with elbow welding.
Elbow tank wall highest point connection corresponding with oblique top plate.
Elbow is welded with tank wall.
The bottom of drainpipe and tank wall connects.
The bottom of tank body is equipped with pedestal.
Compared with prior art, the utility model has technique effect beneficial below：
A kind of centrifugal pump drainage tank provided by the utility model, by the way that the top plate of tank body is designed as oblique top plate and flat-top
It is made of at the top of plate, i.e. drainage tank flat top portion and local oblique top portion, reduces diversion head space gas phase space volume, improve centrifugation
Suction lift of pump and anti-cavitation ability.
Further, suction hose is arranged on outside tank body, avoids the problem that corrosion leakage causes operation stability to reduce,
While centrifugation suction lift of pump and operational efficiency is improved, the stability of operation is improved, there are materials to save, low cost,
The advantages of easy to process.
Further, liquid realizes that fluid lower resistance enters the tank body of drainage tank by suction hose, elbow and oblique top, reduces
Centrifugal pump integral inlet segment pipe resistance, further improves suction head and anti-cavitation ability.
Description of the drawings
Fig. 1 is the structure diagram of traditional drainage tank；
Fig. 2 calculates schematic diagram for centrifugation suction lift of pump.
Fig. 3 is the structure diagram of centrifugal pump drainage tank provided by the utility model；
In figure, 1 is elbow；2 be air bleeding valve；3 be oblique top plate；4 be priming valve；5 be ceiling；6 be tank body；7 be draining
Pipe；8 be pedestal；9 be suction hose.
Specific embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings：
Referring to Fig. 3, the utility model provides a kind of centrifugal pump drainage tank, and including tank body 6, the top plate of tank body 6 is included tiltedly
Top plate 3 and ceiling 5, one end of oblique top plate 3 are connected with ceiling 5, and the height of 3 other end of oblique top plate is higher than the height of ceiling 5
It is made of at the top of degree, i.e. drainage tank flat top portion and local oblique top portion；Priming valve 4 on ceiling 5 is installed, is installed on oblique top plate 3
There is air bleeding valve 2；The side wall of tank body 6 is connected with suction hose 9 and drainpipe 7, and the height of suction hose 9 is higher than the height of drainpipe 7, inhales
Water pipe 9 is installed on the outside of tank body 6, reduces suction hose 9 and corrodes.
Herein, drainpipe 7 is connected with centrifugal pump inlet, and water inlet is provided for centrifugal pump.
Preferably, welded in corresponding 6 side wall of tank body of drainage tank oblique top highest position with external suction hose 9 and elbow 1
It is integrated.Liquid realizes that fluid lower resistance enters the tank body 6 of drainage tank by suction hose 9, elbow 1 and oblique top, realizes same operating mode
It is lower to improve centrifugation suction lift of pump and improve anti-cavitation ability.
Preferably, drainpipe 7 is installed in the bottom of 6 side wall of tank body, reduces tank lower liquid phase idle space, increased
Imitate liquid Space.
In actual use, can according to on-site actual situations determine tank body 6 bottom whether mounting seat 8.
The transformation principle of the utility model is：Referring to Fig. 2, it is using drainage tank centrifugal pump suction head formula：
HS=(P0- P0(v1+v2)/(v2+v3)-Pb- pu2/ 2-hf)/pg；
Wherein, HS：Maximum suction lift；P0：Local atmospheric pressure；v1：9 volume of suction hose in 0-0 faces to 1-1 faces；
v2：Drainage tank 1-1 faces upper space volume；v3：2-2 faces are to net volume between 1-1 faces after drainage tank operation stable state；Pb：At this temperature
Water or the saturated vapor pressure for being pumped into liquid；P is suction fluid density；hf：Liquid is in pipeline fluid drag losses and allows to cavitate
Surplus.
It can be drawn by above formula：Reduce by 9 upper space v of suction hose2Or reduce pipe resistance hfIt is high that centrifugal pump sucking can be improved
Degree.With reference to 6 diameter of tank body much larger than 9 diameter of suction hose, diversion head space gas phase volume can be greatly reduced using local oblique top in tank deck,
Meanwhile the steering of 9 fluid outlet 180 degree of suction hose in the prior art is changed to 90 degree in the utility model and is turned to, reduce from
Heart pump inlet pipeline resistance.And then it demonstrates the utility model and can improve centrifugation suction lift of pump.
The application method of the utility model is：Before centrifugal pump initial start-up, air bleeding valve 2 and priming valve 4 are opened, from Jia Shui
Valve 4 plus water make to be filled with water to 1-1 section in tank, and the suction hose 0-0 to 1-1 in space and drainage tank more than 1-1 section is disconnected
It is atmospheric air between face.Air bleeding valve 2 and priming valve 4 are closed after adding water, makes drainage tank closed, after centrifuging pump startup, tank
Interior water level is gradually reduced, and tank inner air pressure is made to continuously decrease and form negative pressure, the water at water source then by suction hose 9 gradually on
It rises, water is then fully filled with when water level is down to 2-2 section in tank, in suction hose 9 and passes through the moisturizing into tank of elbow 1, so as to
Reach normal dynamic steady operational status, the negative pressure water suction for reaching centrifugal pump becomes positive pressure water suction purpose.In the process of running,
Liquid rises at elbow 1 and is made a concerted effort to influence by gravity and kinetic energy in suction hose 9, and partially liq is automatically fallen by gravity in tank, portion
The larger fluid of transfer energy is fallen into low-angle low energy collisions in tank in oblique top inner wall with flow direction, realizes minimum pipe resistance diversion.
Due to local oblique top moulding, whole gaseous phase volume is small, and 2-2 liquid levels is made slightly to reduce, and can be achieved with 1-1 faces top oblique section vacuum
It is greatly reduced, reduces drainage tank total volume, realizing reduces drainage tank height and raising suction lift of pump.
It should be noted that detailed drainage tank size and each part dimension specification, it need to be local big according to pump installation
Air pressure, sucking medium temperature, inhalation flow etc. determine.
By reducing diversion head space gas phase space volume and reducing 9 drag losses of suction hose, realize reduces the utility model
Centrifugal pump integral inlet segment pipe resistance improves suction head and centrifugal pump anti-cavitation ability.It eliminates simultaneously due to built-in suction
The problem of water pipe 9 causes corrosion leakage, and operation stability reduces.The utility model is improving centrifugation suction lift of pump and operation
While efficiency, improve the stability of operation, have materials save, low cost, it is easy to process the characteristics of.
Claims (8)
1. a kind of centrifugal pump drainage tank, which is characterized in that including tank body (6), the top plate of tank body (6) includes oblique top plate (3) peace
Top plate (5), one end of oblique top plate (3) are connected with ceiling (5), and the height of oblique top plate (3) other end is higher than the height of ceiling (5)
Degree；Priming valve (4) on ceiling (5) is installed, air bleeding valve (2) is installed on oblique top plate (3)；The side wall of tank body (6) is connected with
Suction hose (9) and drainpipe (7).
2. centrifugal pump drainage tank according to claim 1, which is characterized in that suction hose (9) is installed on the outer of tank body (6)
Portion.
3. centrifugal pump drainage tank according to claim 2, which is characterized in that further include elbow (1), suction hose (9) passes through
Elbow (1) is connected with the side wall of tank body (6).
4. centrifugal pump drainage tank according to claim 3, which is characterized in that suction hose (9) is welded as one with elbow (1)
Body.
5. centrifugal pump drainage tank according to claim 3, which is characterized in that elbow (1) tank body (6) corresponding with oblique top plate
Side wall highest point connects.
6. centrifugal pump drainage tank according to claim 5, which is characterized in that elbow (1) and tank body (6) sidewall weld.
7. centrifugal pump drainage tank according to claim 1, which is characterized in that the bottom of drainpipe (7) and tank body (6) side wall
Connection.
8. centrifugal pump drainage tank according to claim 1, which is characterized in that the bottom of tank body (6) is equipped with pedestal (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721368401.8U CN207454290U (en) | 2017-10-23 | 2017-10-23 | A kind of centrifugal pump drainage tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721368401.8U CN207454290U (en) | 2017-10-23 | 2017-10-23 | A kind of centrifugal pump drainage tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207454290U true CN207454290U (en) | 2018-06-05 |
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ID=62281127
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721368401.8U Active CN207454290U (en) | 2017-10-23 | 2017-10-23 | A kind of centrifugal pump drainage tank |
Country Status (1)
| Country | Link |
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| CN (1) | CN207454290U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108915767A (en) * | 2018-09-06 | 2018-11-30 | 淮南市阶梯电子科技有限公司 | The starter for the draining of mine down-hole sump matched with centrifugal water pump |
| CN110985449A (en) * | 2019-12-04 | 2020-04-10 | 武汉理工大学 | Large-scale mail steamer water supply system and centrifugal pump cavitation erosion prevention device |
-
2017
- 2017-10-23 CN CN201721368401.8U patent/CN207454290U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108915767A (en) * | 2018-09-06 | 2018-11-30 | 淮南市阶梯电子科技有限公司 | The starter for the draining of mine down-hole sump matched with centrifugal water pump |
| CN110985449A (en) * | 2019-12-04 | 2020-04-10 | 武汉理工大学 | Large-scale mail steamer water supply system and centrifugal pump cavitation erosion prevention device |
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