CN104763642B - A kind of jet pump device - Google Patents
A kind of jet pump device Download PDFInfo
- Publication number
- CN104763642B CN104763642B CN201510135334.4A CN201510135334A CN104763642B CN 104763642 B CN104763642 B CN 104763642B CN 201510135334 A CN201510135334 A CN 201510135334A CN 104763642 B CN104763642 B CN 104763642B
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- Prior art keywords
- pump
- valve
- jet pump
- water
- centrifugal pump
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Classifications
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- 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
- F04D9/04—Priming; Preventing vapour lock using priming pumps; using booster pumps to prevent vapour-lock
- F04D9/06—Priming; Preventing vapour lock using priming pumps; using booster pumps to prevent vapour-lock of jet type
Abstract
Start the preceding jet pump device for filling the pump time the invention belongs to a kind of jet pump device, more particularly to a kind of shortening.The present invention is realized by return pipe only need to be disposably filled when starting first and started shooting, and without pouring water again when being poured water without shutting down again, and used next time, substantially reduces the startup time.The present invention is by centrifugal pump, jet pump, direct-operated regulator, check-valves, the composition such as gate valve and pipeline.By the way that comprising double-deck pump chamber, air bleeding valve, the centrifugal pump of flap valve and backwater hole etc. coordinates the switch of direct-operated regulator to enter gas in jet pump and discharges, realizes being started shooting by need to only filling return pipe.By the switch of gate valve, realization is reused by need not pouring water and directly initiated.
Description
Technical field
Start the preceding jet pump device for filling the pump time the present invention relates to a kind of jet pump device, more particularly to a kind of shortening.
Background technology
Cavitation erosion performance of the height by pump in itself that Ordinary Centrifugal Pumps are installed determine, cannot typically exceed 8m.Jet pump device
By centrifugal pump, jet pump and enter water return pipeline etc. and constitute, by the jet pump secondary pressurized at immersion water bottom, make jet pump device
Suction head reaches more than 9m, even more than hundred meters, considerably beyond the suction head of Ordinary Centrifugal Pumps, contrasts other high suction depths
Water lift utensil, the features such as jet pump device has simple structure, low cost, therefore, jet pump device is widely used in water level
Drawn water in relatively low rivers and well.
Conventional fluidic pump installation, structure type such as high lift water pump for deep well (CN90201514.1), deep-well water lift are penetrated
Stream device (CN90204075.8) and externally-connected jet device with preposed water pump (CN200910112556.9) etc., during startup, need to from from
Heart pump outlet is poured water, and by spiral case and impeller, water could enter water inlet pipe and return pipe, and water inlet pipe passes through jet with return pipe
Pump is connected, the nozzle flow section very little of jet pump, generally 1/10th or so of return pipe, in addition, due to jet
Pump installation has larger setting height(from bottom), it is necessary to water inlet pipe and return pipe very long, if jet pump device runs, gas in pipeline
Body is not drained, it will influence device performance, cavitation erosion occurs centrifugal pump and jet pump are caused damage.Reason, jet in sum
Pump installation needs to pour water for a long time before activation, and wants continuous start and stop water pump to ensure to drain gas, this conventional fluidic pump dress
The irrigation method put not only takes, and pneumatosis easily occurs in pipeline, influences device performance.
Additionally, valve is not installed in conventional fluidic pump installation exit, still need to pour water when being again started up after shutdown, and it is traditional
Jet pump bottom valve is spring non-return valve, and parthydraulic loss is big, and spring easily fails.
Therefore, developing one kind can greatly simplify turn on pump process, save the jet pump device of startup time have it is important
Meaning, and the jet pump device at present with reduction turn on pump process is all to add extra equipment before centrifugal pump inlet to realize contracting
Short filling pump time, such as jetted self-priming device (CN201420310194.0), exhaust apparatus is added to reduce startup before centrifugal pump
Time, such jet pump device increased equipment and install the cost safeguarded.
The present invention proposes a kind of jet pump device, is started shooting by only once need to filling return pipe when starting first, nothing
Need to again shut down and pour water, and next time using without pouring water again, substantially reduces the startup time.
The content of the invention
The technical problems to be solved by the invention are to need to pour water and repeatedly open for a long time when starting for jet pump device
The problem of power failure machine, there is provided a kind of need to only startup first once fills return pipe, is again started up the jet pump dress that need not be poured water
Put.
To solve above-mentioned technical problem, present invention employs following scheme：A kind of jet pump device, including centrifugation
Pump 1, jet pump 5, direct-operated regulator 8, check-valves 7, gate valve 9, the centrifugal pump 1 respectively with water inlet pipe 2 and return pipe 3
It is logical；The water inlet pipe 2 is connected with the outlet of jet pump 5, the import that the return pipe 3 passes through direct-operated regulator 8 and jet pump 5
It is connected；The elbow of the water inlet pipe 2 is provided with water filling port 10, and the water filling port 10 is located in elbow top, water filling port 10 and is provided with
Non-return valve, the entrance point that non-return valve valve port has the straight length for being socketed water hose, the suction hose 6 of the jet pump 5 is provided with
Check-valves 7, the outlet pipe 4 is connected by gate valve 9 with return pipe 3.
In such scheme, the check-valves 7 is gravity type non-return valve with non-return valve, and it relies on the self gravitation of flap to seal
Close to prevent water from flowing backwards.
In such scheme, the centrifugal pump 1 is the centrifugal pump of double-layer pump body, and pump chamber 14 constitutes pump housing exocoel, spiral case 13
Inner Constitution pump housing inner chamber, the import of the centrifugal pump 1 is slightly above the upper limb of impeller 12；Described one end of impeller water inlet pipe 17 connect from
The import of heart pump 1, the other end of impeller water inlet pipe 17 connects impeller 12；The pump housing inner chamber is provided with backwater hole 11, the backwater
Hole 11 communicates with pump chamber 14, is shaped as circle, and area is depending on device total flow；The top of the pump chamber 14 is provided with air bleeding valve 15.
Be provided with ball 18 in such scheme, in the air bleeding valve 15, valve block internal diameter for the diameter of ball 18 1.2 to
1.5 times；Upper lever stopper 20 and lower lever stopper 19 are additionally provided with the valve body of air bleeding valve 15, the upper lever stopper 20 is straight with the opening of lower lever stopper 19
Footpath is 0.6 to 0.8 times of the diameter of ball 18.
In such scheme, the water inlet pipe 2 is connected with the import of centrifugal pump 1, and it is flat to be provided with one at the import of the centrifugal pump 1
Board-like flap valve 16, the material of flat flap valve 16 is rubber.
In such scheme, valve is automatic when the pressure of the valve inlet of the direct-operated regulator 8 reaches pressure designated value
Open, the pressure designated value is T, the expression formula of T is as follows：
T ＞ G+PS
G --- direct-operated regulator 8 is to the elbow water gravity of return pipe 3；
The back pressure of P --- centrifugal pump 1；
The discharge section area of S --- return pipe 3.
The beneficial effects of the invention are as follows：1st, when jet pump device starts, directly poured water without controlled valve, when water level reaches
To during outlet of centrifugal pump can turn on pump, now direct-operated regulator be closed mode, using centrifugal pump itself self-priming be vented energy
Power, after the completion of exhaust, jet pump device just can normal work, without multiple start and stop water pump；2nd, after first time pours water startup,
It is again started up to continue to pour water, turn on pump can be such that jet pump device normally runs after opening outlet valve.
Brief description of the drawings
Fig. 1 is jet pump device structural representation of the present invention.
Fig. 2 is centrifugal pump structure schematic diagram.
Fig. 3 is centrifugal pump internal structure schematic three dimensional views.
Fig. 4 is exhaust structure schematic diagram.
Fig. 5 is the structural representation of direct-operated regulator.
1. centrifugal pump, 2. water inlet pipe, 3. return pipe, 4. outlet pipe, 5. jet pump, 6. suction hose, 7. check-valves, 8. relies on oneself
Formula regulating valve, 9. gate valve, 10. water filling port, 11. backwater holes, 12. impellers, 13. spiral cases, 14. pump chambers, 15. air bleeding valves, 16. flat boards
Formula flap valve, 17. impeller water inlet pipes, 18. balls, 19. lower lever stoppers, 20. upper lever stoppers, 21. executing agencies, 22. connecting pipes, 23.
Spring, 24. valve elements, 25. valve seats.
Specific embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
As shown in figure 1, a kind of jet pump device, including centrifugal pump 1 and jet pump 5, the centrifugal pump 1 and the jet pump
5 are linked together by water inlet pipe 2 and return pipe 3, are provided with check-valves 7 at the import of suction hose 6 of jet pump 5, jet pump 5 with return
Direct-operated regulator 8 is provided between water pipe 3, the direct-operated regulator 8 is check valve, when the pressure value on valve top reaches finger
Automatically opened up during constant-pressure, the pressure set points T, T expression formulas are as follows：
T ＞ G+PS
G --- direct-operated regulator is to return pipe elbow water gravity；
P --- outlet of centrifugal pump pressure；
S --- return pipe discharge section area.
The elbow of the water inlet pipe 2 is provided with water filling port 10, and the water filling port 10 is located at elbow top, is inside provided with check
Valve, valve port has the straight length for being socketed water hose, is connected with return pipe 3 by gate valve 9 at outlet pipe 4.
As Figure 2-3, the centrifugal pump 1 includes impeller 12, impeller water inlet pipe 17, pump chamber 14, air bleeding valve 15, centrifugal pump
1 import is slightly above the upper limb of impeller 12, and flat flap valve 16, the flat flap valve material are provided with the impeller water inlet pipe 17 import
Matter is rubber, and the end of impeller water inlet pipe 17 is connected with impeller 12, and the impeller 12 is located in spiral case 13, and the spiral case 13 goes out
Mouth faces outlet of centrifugal pump, and backwater hole 11 is provided with the lower section of spiral case 13, and backwater hole 11 is communicated with pump chamber 14, the shape of backwater hole 11
Shape is circle, and depending on device total flow, the top of the pump chamber 14 is air bleeding valve 15 to area, and the air bleeding valve is that ball is automatic
Closing type valve, valve block internal diameter is 1.2 to 1.5 times of glueballs diameter, and valve body upper lever stopper is glueballs diameter with lower lever stopper opening diameter
0.6 to 0.8 times.The structure setting and air bleeding valve 15, impeller 12 and backwater hole 11 of the logical double-layer pump body for crossing centrifugal pump 1
Mating reaction, the centrifugal pump 1 greatly improves the efficiency of exhaust, optimizes the effect of exhaust, and greatly shortens
The startup time of jet pump device.
As shown in figure 4, when gas is contained in pump chamber 14, gas jack-up ball 18 under the pressurization of impeller 12, from valve body
Both sides are discharged, and when water is full of in pump chamber 14, ball 18 is compressed upper lever stopper 20 by pressure water, forms sealing.
As shown in figure 5, the outlet pressure of direct-operated regulator 8 is used as feedback signal, the elasticity of the pressure and spring 23
Dynamic balance, executing agency 21 is introduced by connecting pipe 22, drives valve element 24 to move the purpose for reaching and changing valve opening degree, is poured water
When, sealing is formed in the insertion valve seat 25 of valve element 24, when the pressure value of valve inlet reaches specified pressure, valve element 24 is beaten automatically
Open.
Workflow：Filling pump is carried out by the water filling port 10 of the elbow of water inlet pipe 2, due to the throttling of direct-operated regulator 8
Effect, water fills the suction chamber of jet pump 5 and water inlet pipe quickly, and passes sequentially through flat flap valve 16 and impeller water inlet pipe 17, enters
Enter impeller 12 and spiral case 13, stop pouring water and starting centrifugal pump 1 after filling whole pump chamber.Now, return pipe 3 to jet pump 5 sprays
Mouth section still has a large amount of gases not discharge, and after centrifugal pump operating, water and air flows into impeller 12 and spiral case 13, water through impeller water inlet pipe
Acted on from spiral case discharge outlet by impeller 12 with air carries out gas-liquid separation into pump chamber 14, and gas is discharged from air bleeding valve 15, pump
Impeller outer edge is back to by backwater hole 11 through the water after gas-liquid separation in chamber 14, then carries out gas-liquid mixed, constantly circulation is suction
The gas entered in pipeline and the pump housing is drained, and negative pressure is formed at the import of centrifugal pump 1, and water constantly enters from suction hose 6 under atmospheric action
In incident flow pump 5, then enter centrifugal pump 1 from water inlet pipe 2, return pipe 3 and outlet pipe 4 are respectively enterd after being pressurizeed through centrifugal pump 1, when
When return pipe 3 is filled, direct-operated regulator 8 is automatically opened up under pressure, and jet pump device enters normal operating conditions.Stop
Before pump, the gate valve 9 closed on outlet pipe 4, after centrifugal pump 1 is closed, water is store in the presence of flat flap valve 16 and check-valves 7
Exist in jet pump device, next time starts without pouring water again.
Claims (5)
1. a kind of jet pump device, it is characterised in that：Including centrifugal pump (1), outlet pipe (4), jet pump (5), self-operated type regulation
Valve (8), check-valves (7), gate valve (9), the centrifugal pump (1) respectively with water inlet pipe (2) and return pipe (3) UNICOM；The water inlet
Pipe (2) is connected with the outlet of jet pump (5), the import that the return pipe (3) passes through direct-operated regulator (8) and jet pump (5)
It is connected；The elbow of the water inlet pipe (2) is provided with water filling port (10), and the water filling port (10) is positioned at elbow top, water filling port
(10) non-return valve is provided with, non-return valve valve port has the straight length for being socketed water hose, the suction hose of the jet pump (5)
(6) entrance point is provided with check-valves (7), and the outlet pipe (4) is connected by gate valve (9) with return pipe (3)；
The check-valves (7) is gravity type non-return valve with non-return valve, and it closes to prevent water from falling by the self gravitation of flap
Stream；The centrifugal pump (1) is the centrifugal pump of double-layer pump body, and pump chamber (14) constitutes pump housing exocoel, the Inner Constitution pump of spiral case (13)
Intracoelomic cavity, the import of the centrifugal pump (1) is slightly above impeller (12) upper limb；Impeller water inlet pipe (17) one end connects centrifugal pump (1)
Import, impeller water inlet pipe (17) other end connects impeller (12)；The pump housing inner chamber is provided with backwater hole (11), the backwater
Hole (11) communicates with pump chamber (14).
2. a kind of jet pump device stated according to claim 1, it is characterised in that：The backwater hole (11) is shaped as circle, face
Product is depending on device total flow；Pump chamber (14) top is provided with air bleeding valve (15).
3. a kind of jet pump device according to claim 2, it is characterised in that：Ball is provided with the air bleeding valve (15)
(18), valve block internal diameter is 1.2 to 1.5 times of ball (18) diameter；Upper lever stopper (20) is additionally provided with the valve body of air bleeding valve (15)
With lower lever stopper (19), the upper lever stopper (20) is the 0.6 to 0.8 of ball (18) diameter with the opening diameter of lower lever stopper (19)
Times.
4. a kind of jet pump device according to claim 1, it is characterised in that：The water inlet pipe (2) and centrifugal pump (1)
Import is connected, and a flat flap valve (16) is provided with the import of the centrifugal pump (1), and flat flap valve (16) material is rubber
Glue.
5. a kind of jet pump device according to claim 1, it is characterised in that：The valve of the direct-operated regulator (8)
Valve is automatically opened up when the pressure of import reaches pressure designated value, and the pressure designated value is T, and the expression formula of T is as follows：
T ＞ G+PS
G --- direct-operated regulator (8) is to return pipe (3) elbow water gravity；
P --- centrifugal pump (1) back pressure；
S --- return pipe (3) discharge section area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510135334.4A CN104763642B (en) | 2015-03-26 | 2015-03-26 | A kind of jet pump device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510135334.4A CN104763642B (en) | 2015-03-26 | 2015-03-26 | A kind of jet pump device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104763642A CN104763642A (en) | 2015-07-08 |
| CN104763642B true CN104763642B (en) | 2017-06-27 |
Family
ID=53645667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510135334.4A Active CN104763642B (en) | 2015-03-26 | 2015-03-26 | A kind of jet pump device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104763642B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB623874A (en) * | 1946-12-28 | 1949-05-24 | Superheater Co Ltd | Jet assisted pump suction |
| US5133324A (en) * | 1989-12-13 | 1992-07-28 | Nissan Motor Co., Ltd. | Ejector pump for vehicle fuel tank |
| CN2231721Y (en) * | 1995-07-13 | 1996-07-24 | 上海沪江喷射真空泵厂 | Jet well pump set |
| CN2308738Y (en) * | 1997-08-21 | 1999-02-24 | 张元友 | Spray-sucking deep well water pump |
| CN2516733Y (en) * | 2002-01-11 | 2002-10-16 | 张元友 | Combined high lift water pump |
| CN204663903U (en) * | 2015-03-26 | 2015-09-23 | 江苏大学 | A kind of jet pump device |
-
2015
- 2015-03-26 CN CN201510135334.4A patent/CN104763642B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB623874A (en) * | 1946-12-28 | 1949-05-24 | Superheater Co Ltd | Jet assisted pump suction |
| US5133324A (en) * | 1989-12-13 | 1992-07-28 | Nissan Motor Co., Ltd. | Ejector pump for vehicle fuel tank |
| CN2231721Y (en) * | 1995-07-13 | 1996-07-24 | 上海沪江喷射真空泵厂 | Jet well pump set |
| CN2308738Y (en) * | 1997-08-21 | 1999-02-24 | 张元友 | Spray-sucking deep well water pump |
| CN2516733Y (en) * | 2002-01-11 | 2002-10-16 | 张元友 | Combined high lift water pump |
| CN204663903U (en) * | 2015-03-26 | 2015-09-23 | 江苏大学 | A kind of jet pump device |
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| Publication number | Publication date |
|---|---|
| CN104763642A (en) | 2015-07-08 |
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