CN212151677U - Jet flow air floatation device for preventing cavitation - Google Patents
Jet flow air floatation device for preventing cavitation Download PDFInfo
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- CN212151677U CN212151677U CN202020563254.5U CN202020563254U CN212151677U CN 212151677 U CN212151677 U CN 212151677U CN 202020563254 U CN202020563254 U CN 202020563254U CN 212151677 U CN212151677 U CN 212151677U
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- centrifugal pump
- ejector
- entry
- pump
- sunction inlet
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Abstract
The utility model discloses an anti-cavitation jet flow air flotation device, including centrifugal pump and ejector, the centrifugal pump contains export and entry, the ejector contains sunction inlet A, sunction inlet B and discharge port, the export part of centrifugal pump switches on sunction inlet A, sunction inlet B switches on the entry pipeline of sewage pump, the discharge port switches on the entry of centrifugal pump; the utility model discloses cancel air compressor, increase the ejector, utilize the high-pressure fluid that introduces from the centrifugal pump exit to insert ejector sunction inlet A, the outlet pipe of former centrifugal pump links to each other with ejector sunction inlet B, the high-pressure fluid that utilizes the pump to export produces the low-pressure zone in nozzle department, in constantly introducing the ejector with the entry medium, promote the medium pressure in ejector exit, increase centrifugal pump entry pressure, improve the cavitation surplus of centrifugal pump, reduce the destruction to the centrifugal pump, the life of extension centrifugal pump, and because cancelled air compressor, greatly reduced the energy consumption.
Description
Technical Field
The utility model relates to a sewage treatment technical field, in particular to jet flow air supporting device of anti-cavitation.
Background
In the sewage treatment process, the conventional air floatation device adopts an air compressor and a high-pressure water pump to press air and water into a dissolved air tank to generate a large amount of fine bubbles, the fine bubbles are adhered to small suspended particles in the wastewater to form a 'bubble particle' complex with the integral density smaller than that of the water, and the suspended particles float to the water surface along with the bubbles to form a foam floating check, so that suspended matters in the water are separated. The mode has small effective cavitation allowance, is easy to damage the pump and reduces the service life of the pump.
SUMMERY OF THE UTILITY MODEL
A primary object of the present invention is to provide a cavitation-resistant jet air flotation device, which can effectively solve the problem of the prior art that the residual cavitation in the prior air flotation device is small, and can easily damage the pump and reduce the service life of the pump.
In order to achieve the above purpose, the utility model adopts the following technical scheme: the jet flow air floatation device comprises a centrifugal pump and an ejector, wherein the centrifugal pump comprises an outlet and an inlet, the ejector comprises a suction inlet A, a suction inlet B and a discharge outlet, the outlet part of the centrifugal pump is communicated with the suction inlet A, the suction inlet B is communicated with an inlet pipeline of a sewage pump, and the discharge outlet is communicated with the inlet of the centrifugal pump.
Preferably, the ejector is a venturi ejector.
Preferably, the ejector is a high-position ejector.
Preferably, the centrifugal pump has a head of 50m to 60 m.
Preferably, the high-pressure fluid Q is ejected from the outlet of the centrifugal pumpd’Pd' divided into jets of high-pressure fluid Q1And returning the high-pressure fluid Q2。
Compared with the prior art, the utility model discloses the beneficial effect who produces is: the utility model discloses air compressor has been cancelled, high-order ejector has been increased, the high-pressure fluid that the utilization was introduced from the centrifugal pump exit inserts ejector sunction inlet A, and link to each other the outlet pipe of former centrifugal pump with ejector sunction inlet B, the high-pressure fluid that utilizes the pump export produces the low-pressure area in nozzle department, in constantly introducing the ejector with the entry medium, the medium pressure in ejector exit has been promoted simultaneously, centrifugal pump inlet pressure has been increased, improve the cavitation surplus of centrifugal pump, the destruction to the centrifugal pump has been reduced, the life of centrifugal pump has been prolonged, and owing to cancelled air compressor, greatly reduced the energy consumption.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
In the figure: 1. a centrifugal pump; 11. an outlet; 12. an inlet; 2. an ejector; 21. a suction inlet A; 22. a suction inlet B; 23. and (7) discharging the air.
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.
As shown in fig. 1, a jet flow air flotation device for preventing cavitation comprises a centrifugal pump 1 and an ejector 2, wherein the centrifugal pump 1 comprises an outlet 11 and an inlet 12, the ejector 2 comprises a suction inlet a21, a suction inlet B22 and a discharge outlet 23, the outlet part of the centrifugal pump 1 is communicated with the suction inlet a21, the suction inlet B22 is communicated with an inlet pipeline of a sewage pump, and the discharge outlet 23 is communicated with the inlet 12 of the centrifugal pump 1.
In this embodiment, the ejector 2 is a venturi ejector.
In this embodiment, the ejector 2 is a high-position ejector.
In this embodiment, the lift of the centrifugal pump 1 is 50m to 60 m.
In this embodiment, the high-pressure fluid Qd 'Pd' discharged from the outlet 11 of the centrifugal pump 1 is divided into a discharged high-pressure fluid Q1 and a returned high-pressure fluid Q2.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.
Claims (5)
1. The utility model provides an anti-cavitation's efflux air supporting device which characterized in that: the device comprises a centrifugal pump and an ejector, wherein the centrifugal pump comprises an outlet and an inlet, the ejector comprises a suction inlet A, a suction inlet B and a discharge outlet, the outlet part of the centrifugal pump is communicated with the suction inlet A, the suction inlet B is communicated with an inlet pipeline of a sewage pump, and the discharge outlet is communicated with the inlet of the centrifugal pump.
2. The cavitation-resistant jet air flotation device according to claim 1, characterized in that: the ejector is a Venturi ejector.
3. The cavitation-resistant jet air flotation device according to claim 1, characterized in that: the ejector is a high-position ejector.
4. The cavitation-resistant jet air flotation device according to claim 1, characterized in that: the centrifugal pump has a head of 50-60 m.
5. The cavitation-resistant jet air flotation device according to claim 1, characterized in that: the high-pressure fluid Qd 'Pd' ejected from the outlet of the centrifugal pump is divided into ejected high-pressure fluid Q1 and returned high-pressure fluid Q2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020563254.5U CN212151677U (en) | 2020-04-15 | 2020-04-15 | Jet flow air floatation device for preventing cavitation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020563254.5U CN212151677U (en) | 2020-04-15 | 2020-04-15 | Jet flow air floatation device for preventing cavitation |
Publications (1)
| Publication Number | Publication Date |
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| CN212151677U true CN212151677U (en) | 2020-12-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN202020563254.5U Active CN212151677U (en) | 2020-04-15 | 2020-04-15 | Jet flow air floatation device for preventing cavitation |
Country Status (1)
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| CN (1) | CN212151677U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114962282A (en) * | 2022-03-29 | 2022-08-30 | 哈尔滨工程大学 | Multifunctional centrifugal pump suction inlet pressurization test device and test method |
-
2020
- 2020-04-15 CN CN202020563254.5U patent/CN212151677U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114962282A (en) * | 2022-03-29 | 2022-08-30 | 哈尔滨工程大学 | Multifunctional centrifugal pump suction inlet pressurization test device and test method |
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