CN203453071U - Built-in type liquid ring self-priming centrifugal pump - Google Patents
Built-in type liquid ring self-priming centrifugal pump Download PDFInfo
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- CN203453071U CN203453071U CN201320475440.3U CN201320475440U CN203453071U CN 203453071 U CN203453071 U CN 203453071U CN 201320475440 U CN201320475440 U CN 201320475440U CN 203453071 U CN203453071 U CN 203453071U
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Abstract
The utility model discloses a built-in type liquid ring self-priming centrifugal pump which comprises a pump shell, a vane wheel and a driving shaft. The pump shell is provided with a liquid inlet and a liquid outlet, the vane wheel is mounted inside the pump shell and drives liquid to flow, one end of the driving shaft is connected to a driving motor, and the other end of the driving shaft is connected with the vane wheel. A liquid ring vacuum pump is mounted on the driving shaft on the rear side of the vane wheel, and a through hole communicated with the suction inlet of the liquid ring vacuum pump is formed in a rear cover plate of the vane wheel. According to the built-in type liquid ring self-priming centrifugal pump, a suction pipeline of a traditional liquid ring centrifugal pump is eliminated, gas exhaust pipelines and return pipelines are simplified, and the structure is made to be simpler. Meanwhile, due to the fact that exhaust of a suction pipeline system is mainly completed through the liquid ring vacuum pump, the size of a gas-liquid separation chamber of the self-priming centrifugal pump can be reduced greatly, and the size and the weight of the centrifugal pump are reduced accordingly.
Description
Technical field
The utility model relates to mechanical field, is specifically related to a kind of by liquid-ring vacuum pump and the into a single integrated structure built-in self-priming centrifugal pump of Centrifugal Pump Design.
Background technique
Existing the structure that liquid-ring vacuum pump carries out exhaust being installed on centrifugal pump, is on the axle of centrifugal pump, liquid-ring vacuum pump to be installed to form.Liquid-ring vacuum pump is that centrifugal pump and intake system are bled, and makes centrifugal pump inner formation vacuum so that pour into liquid, and liquid-ring vacuum pump and centrifugal pump share a live axle, on the pump case of centrifugal pump, Aspirating valves are housed, in order to control the air intake passage of liquid-ring vacuum pump.Its working method is: before starting centrifugal pump, first Aspirating valves is opened, after the gas of intake system and centrifugal pump is drained, Aspirating valves is cut out, to avoid and to reduce liquid backflow; After liquid-ring vacuum pump is taken out the gas of centrifugal pump and intake system to the greatest extent, in the pipeline of centrifugal pump and intake system, can be full of liquid, now centrifugal pump can be started working, and liquid-ring vacuum pump can be inner by partially liq suction after exhausting gas, because the pressure of centrifugal pump is large, liquid-ring vacuum pump can not drawing liquid body in parallel with it, so the liquid in liquid-ring vacuum pump will not flow always and cause heating.In order to address this problem, prior art is between the exhaust port of liquid-ring vacuum pump and the suction line of centrifugal pump, relief tube and Decompression valves have been installed, the liquid in liquid-ring vacuum pump can be entered in the liquid-circulating of centrifugal pump through it, such structure has just increased the complexity of system.In addition because the centrifugal pump with liquid-ring vacuum pump does not arrange liquid storage room, before therefore each centrifugal pump starts, all need to carry out pump priming operation, increased the operation of using.
Model utility content
For solving in prior art the problem that all needs to pour into liquid before complicated and each startup of centrifugal pump pipeline with liquid-ring vacuum pump, the utility model provides a kind of centrifugal pump of built-in liquid-ring vacuum pump, concrete scheme is as follows: a kind of built-in pendular ring self-priming centrifugal pump, comprise the pump case with liquid-inlet and liquid outlet, be arranged on the impeller that drives flow of fluid in pump case, and one end is connected the live axle that the other end is connected with impeller with drive motor, on the live axle of described impeller rear side, liquid-ring vacuum pump is installed, it is characterized in that, on the back shroud of described impeller, be provided with the through hole communicating with liquid ring vacuum Pump Suction Nozzle.
For simplifying gas exhaust piping: the relief opening of described liquid-ring vacuum pump is connected with the liquid outlet of centrifugal pump by outlet pipe.
For cancelling the filling liquid step of centrifugal pump: the promising impeller self-priming of front shroud arranged outside of described impeller provides the liquid storage room of liquid, described liquid storage room is hollow annular structure, is provided with the liquid entering hole communicating with liquid outlet and the liquid outlet communicating with impeller cavity on liquid storage room.
Transportation and maintenance for convenience of centrifugal pump: the bottom of described liquid storage room is provided with draining switch.
For avoiding the liquid heating in liquid-ring vacuum pump: the reflow pipe in the pendular ring wheel chamber of described liquid-ring vacuum pump is connected with liquid storage room.
Preferred: the two ends of described reflow pipe are connected with the pendular ring wheel bottom in chamber and the bottom of liquid storage room respectively.
Installation and maintenance for convenience: described liquid-inlet and liquid storage room are integrated, and described liquid-inlet is S shape pipeline, and the passage that the tail end of its S shape pipeline surrounds with liquid storage room is connected, and described liquid-inlet and pump case are bolted.
Preferred: the hollow annular structural top caliber of described liquid storage room is less than bottom caliber, between top caliber and bottom caliber for arc is excessive and the width of bottom caliber is less than the width of liquid-inlet but be greater than the width of liquid-inlet 2/3rds.
For convenience of extracting air: described through hole is 3～5 and equidistantly arranges around live axle.
The exhaust pipe of having save traditional pendular ring centrifugal pump of the present utility model, has simplified gas exhaust piping and return line, makes structure simpler.Meanwhile, because the exhaust main of suction line system will be completed by liquid-ring vacuum pump, therefore can greatly dwindle the size of self-priming centrifugal pump gas-liquid separation chamber, thereby reduce the volume and weight of centrifugal pump.S Xing Wan, gas-liquid separation chamber, the integrated pump body structure of volute of entrance of self-priming centrifugal pump breaks traditions in pump housing design, innovatively liquid storage room is designed in import cavity, meeting on the basis of oil pump self-priming performance, optimized pump body structure, improved the manufacturability of pump housing casting.The utility model utilization is the mode of perforate on impeller directly, make the liquid-ring vacuum pump can be by the shortest path by the air extraction in centrifugal pump out, has removed exhaust pipe setting external in prior art, has reduced equipment complexity.The outlet pipe of liquid-ring vacuum pump is directly connected with the liquid outlet tube of centrifugal pump,, without the gas of considering again to discharge or the discharge of liquid, has therefore cancelled the outlet valve setting in existing pipeline, reduced corresponding operating procedure and equipment.After adopting annular liquid storage room, avoid each use centrifugal pump all to need to fill with the step of liquid, saved time and labor, and liquid inlet tube and annular liquid storage room are arranged to one and are manufactured respectively with housing, simplified the operation in casting.
Accompanying drawing explanation
Fig. 1 structural representation of the present utility model;
Through hole schematic diagram in Fig. 2 impeller housing;
The structural representation of Fig. 3 liquid storage room;
The structural representation of Fig. 4 liquid-inlet;
Attached number in the figure explanation: 1-centrifugal pump, 101-impeller, 102-back shroud, 103-through hole, 104-liquid storage room, 105-liquid-inlet, 106-liquid outlet, 107-liquid entering hole, 108-liquid outlet, 109-impeller cavity, 110-draining switch, 111-front shroud, 2-liquid-ring vacuum pump, 201-pendular ring wheel, 202-outlet pipe, 203-reflow pipe, 204-pendular ring wheel chamber, 3-live axle, 4-pump case.
Embodiment
As shown in Figure 1, built-in pendular ring self-priming centrifugal pump of the present utility model, comprise the pump case 4 with liquid-inlet 105 and liquid outlet 106, be arranged on the impeller 101 of the interior driving flow of fluid of pump case 4, and one end is connected the live axle 3 that the other end is connected with impeller 101 with drive motor, on the live axle of described impeller 101 rear sides, liquid-ring vacuum pump 2 is installed, on the back shroud 102 of described impeller, is provided with the through hole 103 communicating with liquid-ring vacuum pump 2 suction ports.
The utility model on the basis of existing technology, by the former centrifugal pump pump-line with liquid-ring vacuum pump, make directly on the back shroud of impeller, to open the mode in hole into, gas in suction system and impeller cavity is directly drawn in liquid-ring vacuum pump by through hole, by former vent systems, discharged again, by above-mentioned improvement, not only cancelled original suction line, but also shortened air-breathing path, reduced encapsulation process work.The pipeline that mode by built-in through hole has also reduced centrifugal pump appearance arranges, and maintains easily, carries and install.
During work, first the liquid-ring vacuum pump 2 of pendular ring self-priming centrifugal pump works under the driving of drive motor, pendular ring wheel 201 is drawn onto the gas in impeller cavity 109 and each pipeline in pendular ring wheel chamber 204 by the through hole 103 on back shroud 102, the outlet pipe 202 of taking turns 204 tops, chamber by pendular ring again by gas discharging in atmosphere, after gas discharging is complete, again by the valve closing on outlet pipe 202, complete the gas extraction operation of centrifugal pump.As shown in Figure 2, concrete through hole 103 is definite according to the volume of the working power of liquid-ring vacuum pump and centrifugal pump, and the through hole 103 in the utility model on back shroud is provided with 3～5, and each through hole 103 is equidistantly arranged around live axle 3.Can increase as required number of openings or shutoff through hole in addition.
For further simplifying the pipeline structure of pendular ring self-priming centrifugal pump, the utility model is cancelled the control valve on outlet pipe 202, and the relief opening of described liquid-ring vacuum pump 2 is connected with the liquid outlet 106 of centrifugal pump 1 by outlet pipe.The gas that pendular ring wheel 201 is extracted by said structure is directly discharged by liquid outlet 106, after gas discharging is complete, the liquid of subsequent extracted is also discharged into liquid outlet, do not need to control and do not affect the normal operation of centrifugal pump 1 yet, and the discharge of this liquid also meets the work object of centrifugal pump, can't cause any adverse effect.
As shown in Figure 3, for making pendular ring self-priming centrifugal pump, avoid each startup all to need to fill with liquid operation, the utility model provides the liquid storage room 104 of liquid at promising impeller 101 self-primings of arranged outside of the front shroud 111 of described impeller 101, described liquid storage room 104 is hollow annular structure, is provided with the liquid entering hole 107 communicating with liquid outlet 106 and the liquid outlet 108 communicating with impeller cavity 109 on liquid storage room 104.
In order to facilitate liquid to enter impeller cavity, the bottom of the utility model liquid storage room is equal to or higher than the bottom of impeller cavity, and the width of the chamber of liquid storage room is also greater than the width of impeller cavity simultaneously.Adopt such structure to make liquid storage room and impeller cavity form a drop, the liquid that is easier to liquid storage room flows into impeller cavity, and wider liquid storage room chamber is set, and can provide enough liquid for impeller work.
Integrated making for convenience of liquid-inlet and liquid storage room: as shown in Fig. 1,4, the hollow annular structural top caliber of described liquid storage room is less than bottom caliber, between top caliber and bottom caliber, be that arc is excessive, and the width of bottom caliber is less than the width of liquid-inlet but is greater than the width of liquid-inlet 2/3rds.Adopt such structure to make the S shape structural base of liquid-inlet directly to utilize stock-solution pipe as tube wall, reduce the difficulty on making, the liquid storage room that simultaneously utilizes bottom to widen can store more liquid, more easily starts impeller.After bottom is widened, also can being consistent in appearance of whole equipment, there will not be the little and unstable phenomenon that top is large in bottom.
For reducing the return line structure of liquid-ring vacuum pump, the utility model is connected the reflow pipe of liquid-ring vacuum pump 2 203 with liquid storage room 104.Make by the way the liquid of liquid storage room 104 enter into pendular ring wheel chamber by reflow pipe, outlet pipe 202 by pendular ring wheel chamber 204 enters liquid outlet tube 106 again, form a low-pressure circulation, this circulation is not subject to the impact of impeller suction, has avoided the overheated problem of pendular ring wheel intracavity liquid.By above-mentioned improvement, reduce reflow pipe in prior art and by pendular ring wheel chamber, be connected to length of pipeline and the valve quantity of liquid inlet tube, make the design of centrifugal pump 1 compacter, reasonable.For convenience of liquid backflow, the present invention is connected with the bottom in pendular ring wheel chamber 204 two ends of described reflow pipe 203 respectively with the bottom of annular liquid storage room 104.
As shown in Fig. 1,4, for ease of safeguarding and installing, described liquid-inlet 105 of the present utility model is integrated with liquid storage room 104, described liquid-inlet 105 is S shape pipeline, the tail end of its S shape pipeline is connected with the passage that liquid storage room 104 surrounds, and described liquid-inlet 104 and pump case 4 are bolted.Head end at S shape pipeline is provided with the joint being connected with liquid line, after liquid is entered by S shape pipeline, by the passage in the middle of liquid storage room, enters impeller cavity.The utility model has been avoided the structure of liquid-inlet and gas-liquid separation chamber in prior art, housing integrated design, and by liquid storage room be arranged on liquid-inlet place, meeting on the basis of liquid self-absorbing, optimized centrifugal pump structure, also facilitate maintenance, reduced the difficulty of making.
Deposit for convenience and transport, the bottom of described liquid storage room 104 of the present utility model is provided with draining switch 110.Can be by the emptying rate of liquid in liquid storage room, to reduce weight when not using or safeguard and transport.
The above is only preferred embodiment of the present utility model, not the utility model is done to any pro forma restriction, although the utility model discloses as above with preferred embodiment, yet not in order to limit the utility model, any technician who is familiar with this patent is not departing within the scope of technical solutions of the utility model, when can utilizing the technology contents of above-mentioned prompting to make a little change or being modified to the equivalent embodiment of equivalent variations, in every case be the content that does not depart from technical solutions of the utility model, any simple modification of above embodiment being done according to technical spirit of the present utility model, equivalent variations and modification, all still belong in the scope of the utility model scheme.
Claims (9)
1. a built-in pendular ring self-priming centrifugal pump, comprise the pump case (4) with liquid-inlet (105) and liquid outlet (106), be arranged on the impeller (101) that drives flow of fluid in pump case (4), and one end is connected the live axle (3) that the other end is connected with impeller (101) with drive motor, on the live axle (3) of described impeller (101) rear side, liquid-ring vacuum pump (2) is installed, it is characterized in that, on the back shroud of described impeller (102), be provided with the through hole (103) communicating with liquid-ring vacuum pump (2) suction port.
2. a kind of built-in pendular ring self-priming centrifugal pump as claimed in claim 1, is characterized in that, the relief opening of described liquid-ring vacuum pump (2) is connected with the liquid outlet (106) of centrifugal pump (1) by outlet pipe (202).
3. a kind of built-in pendular ring self-priming centrifugal pump as claimed in claim 2, it is characterized in that, the promising impeller of outer cover plate (111) arranged outside (101) self-priming of described impeller (101) provides the liquid storage room (104) of liquid, described liquid storage room (104) is hollow annular structure, is provided with the liquid entering hole (107) communicating with liquid outlet (106) and the liquid outlet (108) communicating with impeller cavity (109) on liquid storage room (104).
4. a kind of built-in pendular ring self-priming centrifugal pump as claimed in claim 3, is characterized in that, the bottom of described liquid storage room (104) is provided with draining switch (110).
5. a kind of built-in pendular ring self-priming centrifugal pump as claimed in claim 3, is characterized in that, the reflow pipe (203) in the pendular ring wheel chamber (204) of described liquid-ring vacuum pump (2) is connected with liquid storage room (104).
6. a kind of built-in pendular ring self-priming centrifugal pump as claimed in claim 5, is characterized in that, the two ends of described reflow pipe (203) are connected with the bottom of liquid storage room (104) with the bottom in pendular ring wheel chamber (204) respectively.
7. a kind of built-in pendular ring self-priming centrifugal pump as claimed in claim 3, it is characterized in that, described liquid-inlet (105) is integrated with liquid storage room (104), described liquid-inlet (105) is S shape pipeline, the tail end of its S shape pipeline is connected with the passage that liquid storage room (104) surrounds, and described liquid-inlet (105) and pump case (4) are bolted.
8. a kind of built-in pendular ring self-priming centrifugal pump as claimed in claim 3, it is characterized in that, the hollow annular structural top caliber of described liquid storage room (104) is less than bottom caliber, between top caliber and bottom caliber for arc is excessive and the width of bottom caliber is less than the width of liquid-inlet but be greater than the width of liquid-inlet 2/3rds.
9. a kind of built-in pendular ring self-priming centrifugal pump as claimed in claim 1, is characterized in that, described through hole (103) is 3～5 and equidistantly arranges around live axle (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320475440.3U CN203453071U (en) | 2013-08-06 | 2013-08-06 | Built-in type liquid ring self-priming centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320475440.3U CN203453071U (en) | 2013-08-06 | 2013-08-06 | Built-in type liquid ring self-priming centrifugal pump |
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| Publication Number | Publication Date |
|---|---|
| CN203453071U true CN203453071U (en) | 2014-02-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320475440.3U Expired - Fee Related CN203453071U (en) | 2013-08-06 | 2013-08-06 | Built-in type liquid ring self-priming centrifugal pump |
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| Country | Link |
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| CN (1) | CN203453071U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103362826A (en) * | 2013-08-06 | 2013-10-23 | 中国人民解放军总后勤部油料研究所 | Built-in type liquid ring centrifugal pump without being filled with liquid |
-
2013
- 2013-08-06 CN CN201320475440.3U patent/CN203453071U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103362826A (en) * | 2013-08-06 | 2013-10-23 | 中国人民解放军总后勤部油料研究所 | Built-in type liquid ring centrifugal pump without being filled with liquid |
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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 |
Granted publication date: 20140226 Termination date: 20140806 |
|
| EXPY | Termination of patent right or utility model |