CN202441639U - Pump front suction device - Google Patents
Pump front suction device Download PDFInfo
- Publication number
- CN202441639U CN202441639U CN2012200553824U CN201220055382U CN202441639U CN 202441639 U CN202441639 U CN 202441639U CN 2012200553824 U CN2012200553824 U CN 2012200553824U CN 201220055382 U CN201220055382 U CN 201220055382U CN 202441639 U CN202441639 U CN 202441639U
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- water
- cylinder
- pump
- pipe
- suction device
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Abstract
The utility model discloses a pump front suction device, which is arranged on the front end of pumps such as a centrifugal pump. The pump front suction device comprises a water feeding pipe, a water discharging pipe, a cylinder, a water injecting pipe and a water injecting valve, and is characterized in that the cylinder is formed by welding a cylinder body and an upper and a lower covers, the lower cover is provided with a hole and is welded with the water feeding pipe, the upper cover is provided with a hole and is welded with the water injecting pipe, the cylinder body of the cylinder, which is close to the lower cover, is provided with a hole and is welded with the water discharging pipe, the water injecting pipe is provided with a water injecting valve and is connected with a water path, the water discharging pipe is connected with a suction hole of a pump through a flange, and the lower end of the water feeding pipe extends below liquid. The pump front suction device has the advantages that a bottom valve is removed, thus non-tight sealing and liquid leakage caused by the bottom valve are thoroughly eliminated; and liquid is always filled in the suction hole of the pump, thus the pressure of the suction hole of the pump is increased, the cavitation is reduced, and the lifting height of liquid can be effectively increased.
Description
Technical field
The utility model relates to suction device before the pump that a kind of front end in pump classes such as centrifugal pumps installs.
Background technique
In daily life and work, people often use some pump classes and promote liquid, carry liquid or make the liquid boost pressure.Installation application with centrifugal pump is example, and is as shown in Figure 1, and centrifugal pump 1 fixes on the ground, and the suction port of centrifugal pump 1 is connected with water inlet 3, and the lower end of water inlet 3 links to each other with bottom valve 4, and water injection valve 2 is installed in the upper end at of water inlet 3.During work; Through opening the suction port water filling of water injection valve 2 toward water inlet 3 and centrifugal pump 1, this moment, bottom valve 4 was in the state of sealing fully, opened the exhaust port on the pump then; Air in the suction port of water inlet 3 and centrifugal pump 1 is discharged; After exhaust port there are flowing out, close the exhaust port on water injection valve 2 and the pump, start centrifugal pump and realize the drawing liquid process.But, make and to realize drawing water normally because the quality problems of bottom valve 4 or have the phenomenon of being blocked by foreign matter (as being grown in river snail in the water etc.) usually make bottom valve 4 not seal fully.Because bottom valve 4 is poorly sealed, produce and leak, thus all will water filling in the suction port of water inlet 3 and centrifugal pump 1 before each work, get rid of air wherein, make complex operation.In addition, suction lift is big or liquid level is too low, fluid temperature is crossed the high bottom valve that also makes easily and produced cavitation phenomenons, cause liquid can not suction pump in, make the pump cisco unity malfunction, need often to change bottom valve.
Summary of the invention
The purpose of the utility model is a said defective above being directed against, and a kind of bottom valve that need not is provided, and can effectively improve the preceding suction device of pump of the lifting height of liquid.
The purpose of the utility model is achieved through following technological scheme.
Suction device before a kind of pump is made up of water inlet, outlet pipe, cylinder, water injecting pipe and water injection valve, it is characterized in that; Cylinder is welded by stack shell and covers, cover down perforate and with the water inlet welding, on cover perforate and weld with water injecting pipe; Weld by the stack shell place perforate of lower cover and with outlet pipe at cylinder; Water injection valve is installed on the water injecting pipe and is connected with the water route, outlet pipe is connected with pump intake through flange, and the water inlet lower end is stretched under liquid.
Suction device is provided with exhaust port before the said pump, covers perforate on the cylinder and welds with exhaust port.
Said water inlet links to each other with cylinder and stretches in the cylinder.
Said water inlet stretches into the height that the interior height of cylinder is higher than cylinder stack shell upper water-out pipe.
The working principle of the utility model is: open water injection valve to cylinder, outlet pipe and Pump Suction Nozzle water filling, and when air is discharged from the bottom of water inlet, liquid level bubbling this moment; When water was filled with cylinder and water inlet, no longer bubbling of liquid level (when the cylinder loam cake was equipped with exhaust port, discharged from exhaust port by air; When water was filled with cylinder and water inlet, water flowed out from exhaust port), the interior air of this moment cylinder and water inlet is all discharged; Close water injection valve, start centrifugal pump and can realize drawing liquid work.After the shutdown,, need not carry out water flood operations again, directly start centrifugal pump and get final product like need drawing liquid once more.
The beneficial effect of the utility model is: the utility model is removed bottom valve; Thoroughly got rid of the poorly sealed and fluid leakage problems that produces by bottom valve; And full of liquid all the time at the pump intake place; Increase the pressure of Pump Suction Nozzle, reduce the generation of cavitation phenomenons, can effectively improve the lifting height of liquid.
Description of drawings
Fig. 1 is for being the scheme of installation of example with the centrifugal pump in the existing technology.
Fig. 2 is the utility model structural representation.
Fig. 3 has the structural representation of exhaust port for the utility model.
Among the figure: 1 centrifugal pump, 2 water injection valves, 3 water inlets, 4 bottom valves, 5 outlet pipes, 6 cylinders, 7 water injecting pipes, 8 exhaust ports.
Embodiment
Below in conjunction with accompanying drawing, the utility model done further describing.
The biochemical Co., Ltd of Jiangxi Xin Ruifeng environmental protection station has long 10 meters * wide 10 meters * high 4 meters Buffer Pool (about 400m
3), require in the technological process regularly sewage in the pond (about PH=3) to be evacuated to the sewage regulating tank.During beginning, adopt acid-resistant ceramic slurry pump (HNTB-ZK-50/30) to come drawing liquid, the import discrepancy in elevation of the liftoff face-pumping of liquid level is about about 2.5 meters in the pond.Installation method as shown in Figure 1 is adopted in the installation of pump, but at work, acid-resistant ceramic slurry pump is difficult to liquid drawn up cisco unity malfunction.Therefore, change nothing obstruction sewage submersible pump and sink to drawing liquid in the sewage, though can liquid drawn up, the time have been grown, and owing to submersible pump, cable are immersed in the acid liquid for a long time, causes equipment heavy corrosion and potential safety hazard.At last, adopt the preceding suction device of pump as shown in Figure 2.
Suction device before the pump is made up of water inlet 3, outlet pipe 5, cylinder 6, water injecting pipe 7 and water injection valve 2, and cylinder 6 is welded by stack shell and covers; Under cover perforate and with water inlet 3 welding; On cover perforate and with water injecting pipe 7 welding, cylinder 6 lean on lower cover the perforate of stack shell place and with outlet pipe 5 welding, water injection valve 2 be installed on the water injecting pipe 7 and be connected with the water route; Outlet pipe 5 is connected with pump intake through flange, and water inlet 3 lower ends are stretched under liquid.Water inlet 3 links to each other with cylinder 6 and stretches in the cylinder 6, stretches into the height that cylinder 6 interior height are higher than cylinder 6 stack shell upper water-out pipes 5.
The working principle of the utility model is: open water injection valve 2 to cylinder 6, outlet pipe 5 and Pump Suction Nozzle water filling; When air was discharged from the bottom of water inlet 3, liquid level bubbling this moment was when water is filled with cylinder 6 and water inlet 3; Liquid level is bubbling no longer; This moment, cylinder 6 and water inlet 3 interior air were all discharged, and closed water injection valve 2, started centrifugal pump and can realize drawing liquid work.After the shutdown,, need not carry out water flood operations again, directly start centrifugal pump and get final product like need drawing liquid once more.
Suction device before the pump is made up of water inlet 3, outlet pipe 5, cylinder 6, water injecting pipe 7 and water injection valve 2, and cylinder 6 is welded by stack shell and covers; Under cover perforate and with water inlet 3 welding; On cover perforate and respectively with 8 welding of water injecting pipe 7, exhaust port, cylinder 6 lean on lower cover the perforate of stack shell place and with outlet pipe 5 welding, water injection valve 2 be installed on the water injecting pipe 7 and be connected with the water route; Outlet pipe 5 is connected with pump intake through flange, and water inlet 3 lower ends are stretched under liquid.Water inlet 3 links to each other with cylinder 6 and stretches in the cylinder 6, stretches into the height that cylinder 6 interior height are higher than cylinder 6 stack shell upper water-out pipes 5.
The working principle of the utility model is: open water injection valve 2 to cylinder 6, outlet pipe 5 and Pump Suction Nozzle water filling; Air is discharged from exhaust port 8; When water was filled with cylinder 6 and water inlet 3, water flowed out from exhaust port 8, and this moment, cylinder 6 and water inlet 3 interior air were all discharged; Close water injection valve 2, start centrifugal pump and can realize drawing liquid work.After the shutdown,, need not carry out water flood operations again, directly start centrifugal pump and get final product like need drawing liquid once more.
Claims (4)
1. suction device before the pump; Constitute by water inlet (3), outlet pipe (5), cylinder (6), water injecting pipe (7) and water injection valve (2); It is characterized in that: cylinder (6) is welded by stack shell and covers, cover down perforate and with water inlet (3) welding, on cover perforate and weld with water injecting pipe (7); Weld by the stack shell place perforate of lower cover and with outlet pipe (5) at cylinder (6); Water injecting pipe (7) is gone up installation water injection valve (2) and is connected with the water route, and outlet pipe (5) is connected with pump intake through flange, and water inlet (3) lower end is stretched under liquid.
2. suction device before the pump according to claim 1 is characterized in that: suction device is provided with exhaust port (8) before the said pump, covers perforate on the cylinder (6) and welds with exhaust port (8).
3. suction device before the pump according to claim 1 and 2, it is characterized in that: said water inlet (3) links to each other with cylinder (6) and stretches in the cylinder (6).
4. suction device before the pump according to claim 1 and 2 is characterized in that: said water inlet (3) stretches into the height that the interior height of cylinder (6) is higher than cylinder (6) stack shell upper water-out pipe (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200553824U CN202441639U (en) | 2012-02-21 | 2012-02-21 | Pump front suction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200553824U CN202441639U (en) | 2012-02-21 | 2012-02-21 | Pump front suction device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202441639U true CN202441639U (en) | 2012-09-19 |
Family
ID=46823091
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200553824U Expired - Fee Related CN202441639U (en) | 2012-02-21 | 2012-02-21 | Pump front suction device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202441639U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102943769A (en) * | 2012-02-21 | 2013-02-27 | 江西新瑞丰生化有限公司 | Suction device in front of pump |
-
2012
- 2012-02-21 CN CN2012200553824U patent/CN202441639U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102943769A (en) * | 2012-02-21 | 2013-02-27 | 江西新瑞丰生化有限公司 | Suction device in front of pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120919 Termination date: 20170221 |