CN211230854U - Centrifugal pump with vacuum pump and siphon bucket - Google Patents
Centrifugal pump with vacuum pump and siphon bucket Download PDFInfo
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- CN211230854U CN211230854U CN201922198279.XU CN201922198279U CN211230854U CN 211230854 U CN211230854 U CN 211230854U CN 201922198279 U CN201922198279 U CN 201922198279U CN 211230854 U CN211230854 U CN 211230854U
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- vacuum pump
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Abstract
The utility model discloses a centrifugal pump with a vacuum pump and a siphon barrel, which comprises a water pump, a siphon barrel and a vacuum pump, wherein one side of the siphon barrel is connected with the vacuum pump, and a pneumatic piston valve is arranged on a connecting pipeline of the siphon barrel and the vacuum pump; the other side of the siphon barrel is connected with a water pump through a pipeline, a magnetic suspension liquid level meter is arranged on the siphon barrel, and magnetic induction switches are arranged on different liquid level heights of the magnetic suspension liquid level meter and used for controlling the opening and closing of a vacuum pump and a pneumatic piston valve; the siphon bucket is connected with the inlet tube that stretches into the pond, the water pump is connected with the outlet pipe. The utility model provides a centrifugal pump with vacuum pump and siphon bucket avoids appearing the cavitation phenomenon and damages the centrifugal pump impeller and the pump body of centrifugal pump when the suction stroke increases.
Description
Technical Field
The utility model relates to a centrifugal pump technical field, in particular to centrifugal pump with vacuum pump and siphon bucket.
Background
Centrifugal pumps commonly used today are usually provided with a centrifugal pump, as disclosed in the publicationThe Chinese patent of CN209261844U discloses a continuous siphon conveying device, wherein an underground pool is provided with a suction pipe which is connected with a siphon barrel, the upper layer of the siphon barrel is provided with a water inlet and an air outlet, the right side of the siphon barrel is connected with a liquid level meter, and the right side of the siphon barrel is connected with a centrifugal pump through a pipeline; opening the gas vent, opening the water inlet again, irrigating to the siphon bucket through the water inlet, the air is smooth discharges from the gas vent, and can observe the liquid level condition through the level gauge, and after the level gauge instruction reachd the standard value, close water inlet and gas vent, start the centrifugal pump, under the transport of centrifugal pump, the liquid level of siphon bucket constantly reduces, and atmospheric pressure constantly descends, "P2＞P1Pressure difference is formed, liquid in the underground pool can continuously enter the siphon barrel, the siphon barrel keeps liquid level, the siphon barrel is started again after being stopped, and the centrifugal pump can be directly started to convey the liquid without water filling; the beneficial effect of this technique is: the operation is simple and convenient, the operation period is prolonged by several times, the maintenance of the bottom valve is not required to be hoisted, the labor intensity of workers is reduced, and the environmental pollution is reduced.
However, when the installation height of the lifting centrifugal pump is limited in a working site, the suction lift of the centrifugal pump is increased, the pressure at the inlet of the pump is reduced, and meanwhile, when the pressure at the impeller of the centrifugal pump is smaller than the saturated vapor pressure of liquid, the liquid begins to be gasified, a large number of bubbles are generated, and the channel of the impeller is blocked, so that the pump lift and the flow are reduced, the phenomenon of water discharging of the pump is avoided, the pump blade of the centrifugal pump is evacuated, and the pump body of the centrifugal pump is damaged due to the.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a centrifugal pump with vacuum pump and siphon bucket, when the suction stroke of centrifugal pump increases, avoid appearing the cavitation phenomenon and damage the centrifugal pump impeller and the pump body of centrifugal pump.
The utility model provides a following technical scheme:
a centrifugal pump with a vacuum pump and a siphon barrel comprises a water pump, the siphon barrel and the vacuum pump, wherein one side of the siphon barrel is connected with the vacuum pump, and a pneumatic piston valve is arranged on a connecting pipeline between the siphon barrel and the vacuum pump; the other side of the siphon barrel is connected with a water pump through a pipeline, a magnetic suspension liquid level meter is arranged on the siphon barrel, and magnetic induction switches are arranged on different liquid level heights of the magnetic suspension liquid level meter and used for controlling the opening and closing of a vacuum pump and a pneumatic piston valve; the siphon bucket is connected with the inlet tube that stretches into the pond, the water pump is connected with the outlet pipe.
When the installation height of the water pump is increased due to limited lifting of a working site, the suction lift of the water pump is increased, the inlet pressure of the water pump is reduced, when the pressure at the impeller of the water pump is smaller than the saturated vapor pressure of liquid, the liquid begins to be gasified, a large number of bubbles are generated, the channel of the impeller is blocked, the lift and the flow are reduced, and the water pump is not discharged, the pump is evacuated, and meanwhile, the cavitation phenomenon also occurs, and the impeller and the pump body of the water pump are damaged. Therefore in order to solve the problem, the utility model provides a centrifugal pump with vacuum pump and siphon bucket, the utility model provides a theory of operation of centrifugal pump with vacuum pump and siphon bucket does: when the liquid level of the siphon barrel is reduced to a certain position (such as 60%), the magnetic induction switch positioned at the position starts the vacuum pump and the pneumatic piston valve to pump away liquefied gas in the siphon barrel, so that the interior of the siphon barrel is always in a negative pressure state, the pressure at the inlet of the water pump is always smaller than the pressure in the water pool, the pump body of the water pump is ensured to be full of liquid and free of bubbles, and the water pump is always in a good working environment; at the moment, water in the water tank can be automatically supplemented to the siphon barrel through the water inlet pipe, and automatic water supplement is realized. When the liquid level of siphon bucket rises to a certain position (95%), the magnetic induction switch who is located here self-closing vacuum pump and pneumatic piston valve, the vacuum pump stop work to satisfy centrifugal pump operational environment requirement, guarantee that water supply is normal.
The magnetic induction switches are two and are respectively positioned at the positions of the magnetic suspension liquid level meters with the liquid level height of 95 percent and 60 percent corresponding to each other and are respectively used for controlling the closing and the starting of the vacuum pump and the pneumatic piston valve.
The magnetic floating level meter is also called as a magnetic floater type level meter, a magnetic turning plate level meter or a magnetic turning column level meter and can be arranged on the siphon barrel in a side-mounted mode. The position of a float (magnetic float for short) with a magnet of the magnetic flip-column level gauge in a measured medium is influenced by buoyancy. The change of the liquid level causes the change of the position of the magnetic floater, and the static magnetic force coupling action of the magnetic floater and the magnetic turning column (also called a magnetic turning plate) causes the magnetic turning column to turn a certain angle (the surface of the magnetic turning column is coated with different colors), thereby reflecting the condition of the liquid level in the container.
The utility model discloses in, the magnetic levitation level gauge (magnetism turns over the board level gauge) from top to bottom through the flange be connected with the siphon bucket, and the magnetic induction switch is fixed with the larynx hoop and is turning over board level gauge floating barrel pipe and can adjust the height wantonly.
When the liquid level in the magnetic floating liquid level meter is reduced to 60%, the magnetic floater is triggered to be positioned at a magnetic induction switch (a lower magnetic induction switch) through a magnet of the magnetic floater, and the working normally-open point of the magnetic induction switch is attracted. After the working normally-open point of the magnetic induction switch is attracted, an intermediate relay K1 is started (a K1 starting signal passes through the normally-open point of the magnetic induction switch), an alternating current contactor KM for controlling the vacuum pump is started after a pair of normally-open points of K1 are attracted (a KM starting signal passes through the normally-open point of K1), and the vacuum pump starts to work. When the alternating current contactor KM works, a normally-open point on KM works simultaneously, and the electromagnetic valve is started (the electromagnetic valve starting signal passes through the KM normally-open point) to open the pneumatic piston valve to start sucking out liquefied gas in the siphon barrel.
When the liquid level is supplemented to 95%, the magnetic induction switch (upper magnetic induction switch) positioned at the position starts the intermediate relay K2, the working normally closed point of K2 is connected with the lower magnetic induction normally-open point and the other pair of normally-open points of K1 (the lower magnetic induction normally-open point and the K1 normally-open point are connected in parallel) in series to control K1, after K2 works, the normally-closed point of K2 is disconnected to enable K1 to be powered off and stop working, and when K1 stops working, the KM power supply is cut off. KM stops working, the vacuum pump and the pneumatic piston valve immediately stop working, and K2 stops working when the liquid level drops below the position of the upper magnetic induction switch, and K1 enters a standby working state.
The connecting position of the siphon barrel and the vacuum pump is higher than the connecting position of the siphon barrel and the water inlet pipe; the connecting position of the siphon barrel and the water pump is positioned at the lower part of the siphon barrel.
The top of the siphon barrel is connected with a vacuum pump through a pipeline.
The installation height of the water pump, the siphon barrel and the vacuum pump is higher than the horizontal height of the pool.
The water pump, the siphon barrel and the vacuum pump are arranged on the same working surface.
And a manual valve is arranged on a connecting pipeline of the siphon barrel and the water pump, and a manual valve is arranged on the water outlet pipe.
Compared with the prior art, when the installation height of the water pump is increased due to limited lifting of a work place, the water inlet of the water pump is far away from the water surface, the pressure of the water pump for slowly supplementing water of the siphon barrel with small inlet pressure needs to be gradually reduced, when the water level is close to the position of the water inlet of the water pump, the water pump is sucked by the water pump and is not pumped out, the water pump can only be stopped to supplement water again for the siphon barrel, and then the water pump is started to supply water, so that the water supply is extremely unstable, the machine needs to be stopped manually to operate, attention needs to be paid all the time, not only wastes time and manpower, but also influences other influences caused by unstable. And through using the utility model provides a centrifugal pump, as long as fill siphon bucket water for the first time, start water supply compensation system as long as siphon bucket water level falls to 60% will automatic suction compensation, all-weather automatic compensation need not personnel's supervision, guarantees incessant water supply often.
Drawings
FIG. 1 is a schematic view of a conventional centrifugal pump;
fig. 2 is a schematic structural view of the centrifugal pump with the vacuum pump and the siphon barrel provided by the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating the scope of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
As shown in fig. 1, when the installation height of the water pump is allowed to be increased on the spot, that is, the centrifugal pump and the water tank are located at the same plane height, the centrifugal pump includes: inlet tube 1, magnetism float level gauge 2, siphon bucket 3, manual valve 4, outlet pipe 5, water pump 6 and pond 7, siphon bucket 3 is connected with the pond through inlet tube 1, is equipped with magnetism float level gauge 2 on the siphon bucket 3, is equipped with manual valve 4 on siphon bucket 3 and water pump 6's the connecting line and the outlet pipe 5.
When the installation height of the water pump is increased due to limited lifting of a working site, the suction lift of the water pump is increased, the inlet pressure of the water pump is reduced, when the pressure at the impeller of the water pump is smaller than the saturated vapor pressure of liquid, the liquid begins to be gasified, a large number of bubbles are generated, the channel of the impeller is blocked, the lift and the flow are reduced, and the water pump is not discharged, the pump is evacuated, and meanwhile, the cavitation phenomenon also occurs, and the impeller and the pump body of the water pump are damaged.
Therefore, in order to solve the above problem, the present invention provides a centrifugal pump with a vacuum pump and a siphon barrel, as shown in fig. 2, comprising: a water pump 6, a siphon barrel 3 and a vacuum pump 12. The installation height of the water pump 6, the siphon barrel 3 and the vacuum pump 12 is higher than the horizontal height of the water pool, namely, the water pump 6, the siphon barrel 3 and the vacuum pump 12 are installed on the horizontal height of the water pool after the water pump foundation with a certain height is installed. The concrete structure is as follows:
the top of the siphon barrel 3 is connected with a vacuum pump 12 through a vacuum pump inlet pipe 11, and a pneumatic piston valve 10 is arranged on the vacuum pump inlet pipe 11; a magnetic suspension liquid level meter 2 is arranged on the siphon barrel 3 through a flange side, and two magnetic induction switches 9 are arranged on the magnetic suspension liquid level meter 2 and are respectively positioned at positions (which can be respectively called as a lower magnetic induction switch and an upper magnetic induction switch) with the liquid level height of 60 percent and 95 percent; the siphon barrel 3 is connected with the water pool through the water inlet pipe 1, and the connecting position of the siphon barrel 3 and the water inlet pipe 1 is lower than the connecting position of the siphon barrel 3 and the vacuum pump 12; the bottom of siphon bucket 3 is connected with water pump 6 through the pipeline, is equipped with outlet pipe 5 on the water pump 6, is equipped with manual valve 4 on siphon bucket 3 and the connecting line of water pump 6 and the outlet pipe 5.
The utility model provides a theory of operation of centrifugal pump with vacuum pump and siphon bucket does: when the liquid level of the siphon barrel 3 is reduced to a certain position (such as 60%), the magnetic induction switch 9 positioned on the magnetic floating liquid level meter 2 starts the vacuum pump 12 and the pneumatic piston valve 10 through signals to pump away the liquefied gas in the siphon barrel 3, so that the interior of the siphon barrel 3 is always in a negative pressure state, the pressure at the inlet of the water pump 6 is always smaller than the pressure in the water tank 7, the pump body of the water pump 6 is ensured to be filled with liquid and have no bubbles, and the water pump 6 is always in a good working environment; at the moment, water in the water tank 7 can be automatically supplemented to the siphon barrel 3 through the water inlet pipe 1, and automatic water supplement is realized. When the liquid level of the siphon barrel 3 rises to a certain position (95%), the magnetic induction switch 9 on the magnetic suspension liquid level meter 2 automatically closes the vacuum pump 12 and the pneumatic piston valve 10 through signals, and the vacuum pump stops working, so that the requirements of the working environment of the centrifugal pump are met, and the normal water supply is ensured.
The specific working process of the magnetic induction switch 9 for controlling the opening and closing of the vacuum pump 12 and the pneumatic piston valve 10 is as follows:
(1) when the liquid level in the magnetic floating liquid level meter is reduced to 60%, the magnetic floater is triggered to be positioned at a magnetic induction switch (a lower magnetic induction switch) through a magnet of the magnetic floater, and the working normally-open point of the magnetic induction switch is attracted. After the working normally-open point of the magnetic induction switch is attracted, an intermediate relay K1 is started (a K1 starting signal passes through the normally-open point of the magnetic induction switch), an alternating current contactor KM for controlling the vacuum pump is started after a pair of normally-open points of K1 are attracted (a KM starting signal passes through the normally-open point of K1), and the vacuum pump starts to work. When the alternating current contactor KM works, a normally-open point on KM works simultaneously, and the electromagnetic valve is started (the electromagnetic valve starting signal passes through the KM normally-open point) to open the pneumatic piston valve to start sucking out liquefied gas in the siphon barrel.
(2) When the liquid level is supplemented to 95%, the magnetic induction switch (upper magnetic induction switch) positioned at the position starts the intermediate relay K2, the working normally closed point of K2 is connected with the lower magnetic induction normally-open point and the other pair of normally-open points of K1 (the lower magnetic induction normally-open point and the K1 normally-open point are connected in parallel) in series to control K1, after K2 works, the normally-closed point of K2 is disconnected to enable K1 to be powered off and stop working, and when K1 stops working, the KM power supply is cut off. KM stops working, the vacuum pump and the pneumatic piston valve immediately stop working, and K2 stops working when the liquid level drops below the position of the upper magnetic induction switch, and K1 enters a standby working state.
The above-mentioned detailed description of the technical solution and the beneficial effects of the present invention have been described in detail, it should be understood that the above is only the most preferred embodiment of the present invention, not used for limiting the present invention, any modification, supplement, equivalent replacement, etc. made within the principle scope of the present invention should be included within the protection scope of the present invention.
Claims (7)
1. A centrifugal pump with a vacuum pump and a siphon barrel is characterized in that the centrifugal pump comprises a water pump, a siphon barrel and a vacuum pump, one side of the siphon barrel is connected with the vacuum pump, and a pneumatic piston valve is arranged on a connecting pipeline of the siphon barrel and the vacuum pump; the other side of the siphon barrel is connected with a water pump through a pipeline, a magnetic suspension liquid level meter is arranged on the siphon barrel, and magnetic induction switches are arranged on different liquid level heights of the magnetic suspension liquid level meter and used for controlling the opening and closing of a vacuum pump and a pneumatic piston valve; the siphon bucket is connected with the inlet tube that stretches into the pond, the water pump is connected with the outlet pipe.
2. A centrifugal pump with vacuum pump and siphon barrel according to claim 1, characterized in that the magnetic induction switches are two, located at the position of the magnetic floating level gauge corresponding to the liquid level of 95% and 60%, respectively, for controlling the closing and starting of the vacuum pump and the pneumatic piston valve, respectively.
3. A centrifugal pump with a vacuum pump and a siphon barrel according to claim 1, wherein the connection position of the siphon barrel and the vacuum pump is higher than the connection position of the siphon barrel and the water inlet pipe; the connecting position of the siphon barrel and the water pump is positioned at the lower part of the siphon barrel.
4. A centrifugal pump with a vacuum pump and a siphon barrel according to claim 3, characterized in that the top of the siphon barrel is connected with the vacuum pump through a pipeline.
5. A centrifugal pump with a vacuum pump and a siphon bucket according to claim 1, characterized in that the water pump, siphon bucket and vacuum pump are installed at a height higher than the level of the water basin.
6. A centrifugal pump with vacuum pump and siphon barrel according to claim 5, characterized in that the water pump, siphon barrel and vacuum pump are in the same working plane.
7. The centrifugal pump with the vacuum pump and the siphon barrel as claimed in claim 1, wherein a manual valve is arranged on a connecting pipeline of the siphon barrel and the water pump, and a manual valve is arranged on the water outlet pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922198279.XU CN211230854U (en) | 2019-12-10 | 2019-12-10 | Centrifugal pump with vacuum pump and siphon bucket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922198279.XU CN211230854U (en) | 2019-12-10 | 2019-12-10 | Centrifugal pump with vacuum pump and siphon bucket |
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| Publication Number | Publication Date |
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| CN211230854U true CN211230854U (en) | 2020-08-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922198279.XU Active CN211230854U (en) | 2019-12-10 | 2019-12-10 | Centrifugal pump with vacuum pump and siphon bucket |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112813929A (en) * | 2020-12-31 | 2021-05-18 | 王兴超 | System for pumping and discharging gas accumulation and tail water of rubber dam |
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2019
- 2019-12-10 CN CN201922198279.XU patent/CN211230854U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112813929A (en) * | 2020-12-31 | 2021-05-18 | 王兴超 | System for pumping and discharging gas accumulation and tail water of rubber dam |
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