CN215924490U

CN215924490U - Multistage loop high-efficiency high-concentration circulating sand removing system

Info

Publication number: CN215924490U
Application number: CN202122035345.9U
Authority: CN
Inventors: 罗亮; 卢艳娟; 萧艳明; 王燕
Original assignee: Wuxi Times Taoyuan Environmental Protection Equipment Co ltd
Current assignee: Wuxi Times Taoyuan Environmental Protection Equipment Co ltd
Priority date: 2021-08-26
Filing date: 2021-08-26
Publication date: 2022-03-01
Anticipated expiration: 2031-08-26

Abstract

The utility model discloses a multistage loop high-efficiency high-concentration circulating desanding system, which aims at the problem of low sewage treatment efficiency and provides the following technical scheme, wherein the multistage loop high-efficiency high-concentration circulating desanding system comprises a buffer tank, a baffle for separating the buffer tank is arranged in the buffer tank, the baffle is provided with a one-way valve only allowing fluid in a second chamber to pass through, the first chamber is connected with a feed port of the buffer tank, and the second chamber is connected with a discharge port of the buffer tank; the primary desanding device is driven by the conveying pump through a circulating pipeline and is used for primary desanding the sewage in the first chamber and conveying clear liquid to the second chamber; the secondary desanding device is connected with the second chamber through a circulating pipeline, driven by the conveying pump and used for further desanding the clear liquid in the second chamber; the sand collecting tank is connected with the primary sand removing device and the secondary sand removing device and is used for collecting the separated heavy substances; and the spiral sand lifting machine is connected with the sand collecting tank and used for discharging solids in the sand collecting tank. The utility model can carry out multi-stage filtration and improve the sand removal rate.

Description

Multistage loop high-efficiency high-concentration circulating sand removing system

Technical Field

The utility model relates to sewage treatment equipment, in particular to a multistage loop high-efficiency high-concentration circulating desanding system.

Background

With the rapid development of economy, the pressure of water resource shortage is increasing, and the water consumption in production and life of people exceeds the range which can be born by natural circulation. In recent years, annual discharge of sewage in China is continuously increased, annual discharge of sewage in 2015 is only 466.62 billion cubic meters, annual discharge of sewage in 2018 breaks through 500 billion cubic meters, annual discharge of sewage in 2019 is increased to 554.65 billion cubic meters, and annual discharge of sewage in China is increased by 6.4%. At present, the annual sewage discharge amount in 2020 is not published by the official temporarily, but the economy is continuously recovered and stably increased, the industrial economy is stably realized, and the annual sewage discharge amount in 2020 China is expected to increase and is expected to approach 600 billions of cubic meters. People are increasingly aware of the importance of rational utilization of water resources, and therefore the development of sewage treatment is a necessary choice for social development.

No matter in industrial sewage and domestic sewage, all inevitable mix a large amount of gravel, the sewage of mixing a large amount of gravel can cause the damage to direct contact assemblies such as pipeline, valve, the life of the sewage recovery treatment facility that significantly reduces, and there are a plurality of recoverable metal resources such as copper, iron in the gravel, therefore how high-efficient quick degritting is a key problem that needs to be considered emphatically always and solve in the sewage treatment field.

At present, a Chinese patent with an authorization publication number of CN207608352U discloses a sewage treatment desanding device, which comprises a grit chamber, wherein a baffle is arranged in the grit chamber, water flow channels are reserved between the upper end and the lower end of the baffle and the grit chamber, a deslagging mechanism is arranged on the left side of the baffle, and a grit mechanism is arranged on the right side of the baffle; slag removal mechanism scrapes the sediment machine that scrapes the sediment machine end and is provided with the collection sediment groove including setting up in inlet tube, the aeration pipe of grit chamber lower part and setting up in grit chamber upper portion, grit mechanism includes the (mixing) shaft of vertical setting and installs in the terminal impeller of (mixing) shaft, and the impeller below is provided with the sand discharging pipe, the grit chamber upper end is connected with the outlet pipe, and this sewage treatment sand removal device can deposit fast and can effectively discharge the supernatant, and the grit deposits thoroughly, and the supernatant is limpid and does not have the suspended solid.

Although the sewage treatment desanding device can separate clear liquid and gravel, a long settling time is required to achieve the clarity degree of clear and suspended liquid-free supernatant, and the sewage treatment efficiency cannot meet the current social sewage treatment requirements.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model aims to provide a multistage loop high-efficiency high-concentration circulating desanding system which has the advantage of being capable of circularly desanding for many times.

In order to achieve the purpose, the utility model provides the following technical scheme:

a multistage loop high-efficiency high-concentration circulating sand removing system comprises a buffer tank, wherein a partition plate for dividing the buffer tank into a first cavity and a second cavity is arranged in the buffer tank, the partition plate is provided with a one-way valve only allowing fluid in the second cavity to pass through, the first cavity is connected with a feed port of the buffer tank, and the second cavity is connected with a discharge port of the buffer tank; the primary desanding device is connected with the first cavity and the second cavity through circulating pipelines respectively, is driven by a conveying pump, and is used for primary desanding sewage in the first cavity and conveying clear liquid to the second cavity; the secondary desanding device is connected with the second chamber through a circulating pipeline, driven by the conveying pump and used for further desanding the clear liquid in the second chamber and conveying the clear liquid back to the treated clear liquid; the sand collecting tank is connected with the primary sand removing device and the secondary sand removing device and is used for collecting the separated heavy substances; and the spiral sand lifting machine is connected with the sand collecting tank and used for discharging solids in the sand collecting tank.

Adopt above-mentioned technical scheme, set up the baffle between first cavity and second cavity, can only use a buffer tank to carry out sewage treatment work, be convenient for integrate sewage treatment device, reduce entire system's area. Set up the check valve that only allows the interior fluid of second chamber to pass through on the baffle, be convenient for make the turbid liquid of second chamber bottom sediment carry out the one-level degritting in flowing into first chamber, grit content in the sewage when reducing the second grade degritting improves the degritting rate of the ejection of compact indirectly, keeps water pressure stable in the entire system simultaneously, prevents the phenomenon of flowing backward. During the degritting, one-level sand removal device can carry out the one-level degritting to carry the clear solution that the degritting was accomplished and deposit in the second cavity, carry the supernatant in the second cavity to the further degritting of second grade sand removal device, turbid liquid in the second cavity can also flow into and carry out the one-level degritting in the first cavity simultaneously, consequently can circulate the degritting through multistage return circuit, improves the degritting rate of sewage greatly, and need not to carry out long-time settlement, improves the treatment effeciency of sewage. The sand collecting tank is connected with the one-level sand removing device and the two-level sand removing device, separated gravel can be collected, after a certain amount of gravel is collected, the spiral sand lifting device is started to output gravel, the operation is simple, manpower is saved, and the device is suitable for large-scale sewage treatment.

Furthermore, the second chamber is provided with a separating plate to divide the second chamber into two parts, one side provided with a discharge hole of the buffer tank is a discharge chamber, one side connected with the secondary desanding device is a secondary treatment chamber, and the primary desanding device conveys clear liquid to the buffer tank from the secondary treatment chamber.

Adopt above-mentioned technical scheme, cut apart ejection of compact cavity and secondary treatment cavity through setting up the separator plate, prevent that the grit in the one-level degritting sewage in the secondary treatment cavity from flowing into ejection of compact sewage, improve the degritting rate of the ejection of compact.

Furthermore, the baffle is obliquely arranged at a higher point at one end close to the discharge chamber, and the one-way valve is arranged at a lower point of the baffle.

Adopt above-mentioned technical scheme, the baffle slope sets up, and the check valve setting is in the inclined plane bottom, and the gravel that the secondary treatment cavity bottom of being convenient for subsides passes through the check valve and gets into in the first cavity.

Further, the partition plate is not connected to the separation plate, and an alternating port for a small amount of gravel at the bottom of the tapping chamber to flow into the secondary treatment chamber is present between the partition plate and the separation plate.

Adopt above-mentioned technical scheme, make a small amount of gravel that subsides in ejection of compact cavity bottom fall into the second grade processing chamber to carry out the one-level sand removal in getting into first cavity through the check valve.

Furthermore, the primary desanding device and the secondary desanding device both adopt hydrocyclones.

By adopting the technical scheme, the hydrocyclone has the advantages of simple structure, high treatment capacity per unit volume, low equipment manufacturing cost, small occupied area, convenient maintenance, short retention time of sewage in the equipment and high sand removal efficiency.

Further, the buffer tank is provided with an exhaust valve for exhausting gas in the tank.

Adopt above-mentioned technical scheme, prevent that the microorganism from producing gaseous pressure increase in the buffer tank in the sewage in the buffer tank, guarantee the normal clear of degritting work, prevent the explosion simultaneously, improve the security.

Furthermore, the sand collection tank is provided with a shower nozzle for cleaning organic matters on the surface of gravel.

Adopt above-mentioned technical scheme, wash away the organic matter on gravel surface, prevent that the gravel from smelling.

Further, the spiral sand extracting machine comprises a frame and a spiral blade rotatably connected to the frame, wherein the spiral blade is inserted into the gravel and driven by a servo motor.

Adopt above-mentioned technical scheme, can export the grit of separating steadily, transport efficiency is high.

In conclusion, the utility model has the following beneficial effects:

1. the sand removing rate is high and the sand removing time is short;

2. the occupied area of the equipment is small;

3. the equipment operation is stable, need not jar interior degritting.

Drawings

FIG. 1 is a structural diagram of a multi-stage loop high-efficiency high-concentration circulating sand removing system according to the present invention;

in the figure: 1. a buffer tank; 11. a feed inlet of the buffer tank; 12. a discharge hole of the buffer tank; 13. a partition plate; 14. a one-way valve; 15. a separation plate; 16. a first chamber; 17. a second chamber; 171. a discharge chamber; 172. a secondary processing chamber; 18. an exhaust valve; 19. an alternating current port; 2. a first-stage desanding device; 21. a first swirler feed inlet; 22. a first overflow port; 23. a first sand outlet; 3. a secondary desanding device; 31. a feed inlet of a second cyclone; 32. a second overflow port; 33. a second sand outlet; 4. a sand collection tank; 41. a shower head; 42. a liquid discharge port; 5. a spiral sand extracting machine; 51. a frame; 52. a helical blade; 53. a servo motor; 6. a delivery pump.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and examples.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.

Referring to fig. 1, a high-efficient high concentration circulation sand removing system of multistage return circuit, including buffer tank 1 that sets up buffer tank feed inlet 11 and buffer tank discharge gate 12, one-level sand removing device 2 and second grade sand removing device 3 of being connected with buffer tank 1, the collection sand tank 4 of being connected with one-level sand removing device 2 and second grade sand removing device 3 sets up in the spiral sand extractor 5 of collection sand tank 4. All pipeline connectors of the system are provided with control valves.

Specifically, referring to fig. 1, a buffer tank discharge port 12 is disposed at a position on the left side of the buffer tank 1 near the top, and a buffer tank feed port 11 is disposed at a position on the left side near the bottom. The partition plate 13 is arranged at one third of the height of the inner cavity of the buffer tank 1, the partition plate 13 inclines downwards to divide the inner cavity of the buffer tank 1 into a first cavity 16 with a smaller volume at the lower part and a second cavity 17 with a larger volume at the upper part, the check valve 14 is arranged at the lower part of the partition plate 13, and the check valve 14 only allows fluid to flow into the first cavity 16 from the second cavity 17. The separation plate 15 is vertically arranged at the top of the buffer tank 1, and divides the second chamber 17 into a discharge chamber 171 on the left side and a secondary treatment chamber 172 on the right side, the separation plate 15 and the partition plate 13 are not connected, and a communication port 19 for allowing a small amount of gravel at the bottom of the discharge chamber 171 to flow into the secondary treatment chamber 172 exists. The top of the buffer tank 1 is provided with an exhaust valve 18 for exhausting gas in the buffer tank 1.

Referring to fig. 1, the primary desanding device 2 adopts a hydrocyclone, so that the heavier solid-phase impurities are gathered at the bottom of the hydrocyclone through centrifugal action, and the clear liquid with less solid-phase impurities is arranged at the top of the hydrocyclone. The left side surface of the primary desanding device 2 is provided with a first swirler feed inlet 21 which is tangent to the inner swirling direction of the hydrocyclone near the bottom, and the first swirler feed inlet 21 is connected with the lower part of the buffer tank 1 through a pipeline provided with a delivery pump 6. First overflow mouth 22 is on one-level sand removing device 2 upper portion, and first overflow mouth 22 passes through the pipeline and is connected with second grade treatment chamber 172 middle part, and one-level sand removing device 2 bottom sets up first sand outlet 23, through the pipeline and the perpendicular connection in collection sand tank 4 top.

Referring to fig. 1, the secondary desanding device 3 also employs a hydrocyclone. The left side surface of the secondary desanding device 3 is provided with a second cyclone feeding hole 31 which is tangent to the inner rotational flow direction of the hydrocyclone near the bottom, and the second cyclone feeding hole 31 is connected with the position of the right side surface of the secondary treatment chamber 172 near the top through a pipeline provided with a delivery pump 6. The upper part of the secondary desanding device 3 is provided with a second overflow port 32, and the second overflow port 32 is connected with the top of the discharge chamber 171 through a pipeline. The bottom of the second-stage sand removing device 3 is provided with a second sand outlet 33 which is vertically connected with the top of the sand collecting tank 4 through a pipeline.

Referring to fig. 1, a plurality of showering nozzles 41 are installed at the top and the side of the sand collecting tank 4 for washing away organic substances on the surface of the sand. The right side of the sand collecting tank 4 is provided with a liquid outlet 42 which is provided with a dense net filter hole and is used for discharging the shower liquid.

Referring to fig. 1, the spiral sand lifter 5 includes a frame 51 and a spiral blade 52 disposed inside the frame 51 and rotatably connected to the frame 51, the spiral blade 52 is driven by a servo motor 53 disposed in the frame 51, and the spiral blade 52 rotates along a rotation axis to convey the gravel in the sand collection tank 4 out of the sand collection tank 4.

The working process and principle of the embodiment are as follows:

during the desanding, sewage gets into buffer tank 1 from buffer tank feed inlet 11, later get into one-level sand removal device 2 and carry out the one-level desanding, and carry the clear liquid that the desanding was accomplished and deposit in secondary treatment cavity 172, carry the supernatant in secondary treatment cavity 172 to secondary sand removal device 3 and carry out into the second grade desanding, turbid liquid in secondary treatment cavity 172 can also flow into and carry out the one-level desanding in first cavity 16 simultaneously, the clear liquid that the desanding in the last secondary sand removal device 3 was accomplished inputs in ejection of compact cavity 171, export from buffer tank discharge gate 12 again, accomplish the sewage desanding. The turbid liquid of the first-stage desanding equipment and the turbid liquid of the second-stage desanding equipment flow into the sand collecting tank 4, and the organic matters on the surface of the sand are cleaned by the showering spray head 41 and then are output from the sand collecting tank 4 by the spiral sand lifting machine 5.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the utility model may occur to those skilled in the art without departing from the principle of the utility model, and are considered to be within the scope of the utility model.

Claims

1. The utility model provides a high-efficient high concentration circulation sand removal system of multistage return circuit which characterized in that: comprises that

The buffer tank (1) is internally provided with a partition plate (13) which divides the buffer tank (1) into a first chamber (16) and a second chamber (17), the partition plate (13) is provided with a one-way valve (14) which only allows fluid in the second chamber (17) to pass through, the first chamber (16) is connected with a feed port (11) of the buffer tank, and the second chamber (17) is connected with a discharge port (12) of the buffer tank;

the primary desanding device (2) is respectively connected with the first chamber (16) and the second chamber (17) through circulating pipelines, is driven by the conveying pump (6), and is used for primary desanding of sewage in the first chamber (16) and conveying clear liquid to the second chamber (17);

the secondary sand removing device (3) is connected with the second chamber (17) through a circulating pipeline, is driven by the conveying pump (6), and is used for further removing sand from the clear liquid in the second chamber (17) and conveying the clear liquid back to the treated clear liquid;

the sand collecting tank (4) is connected with the primary sand removing device (2) and the secondary sand removing device (3) and is used for collecting the separated heavy substances;

and the spiral sand lifting machine (5) is connected with the sand collecting tank (4) and is used for discharging the solid in the sand collecting tank (4).

2. The multi-stage loop high efficiency high concentration cyclic desanding system of claim 1 in which: the second chamber (17) is provided with a separating plate (15) to divide the second chamber (17) into two parts, one side of the buffer tank discharge port (12) is provided with a discharge chamber (171), one side of the buffer tank discharge port connected with the secondary desanding device (3) is provided with a secondary treatment chamber (172), and the primary desanding device (2) conveys clear liquid to the buffer tank (1) from the secondary treatment chamber (172).

3. The multi-stage loop high efficiency high concentration cyclic desanding system of claim 2 in which: the partition plate (13) is obliquely arranged with one end close to the discharging chamber (171) as a higher point, and the one-way valve (14) is arranged at a lower point of the partition plate (13).

4. The multi-stage loop high efficiency high concentration cyclic desanding system of claim 3 in which: the partition plate (13) and the separation plate (15) are not connected, and an alternating flow port (19) for a small amount of gravel at the bottom of the discharging chamber (171) to flow into the secondary treatment chamber (172) is arranged between the partition plate (13) and the separation plate (15).

5. The multi-stage loop high efficiency high concentration cyclic desanding system of claim 1 in which: the primary sand removing device (2) and the secondary sand removing device (3) both adopt hydrocyclones.

6. The multi-stage loop high efficiency high concentration cyclic desanding system of claim 1 in which: the buffer tank (1) is provided with an exhaust valve (18) for exhausting gas in the tank.

7. The multi-stage loop high efficiency high concentration cyclic desanding system of claim 1 in which: the sand collecting tank (4) is provided with a flushing sprayer (41) for cleaning organic matters on the surface of gravel.

8. The multi-stage loop high efficiency high concentration cyclic desanding system of claim 1 in which: the spiral sand lifting machine (5) comprises a frame (51) and a spiral blade (52) rotatably connected to the frame (51), wherein the spiral blade (52) is inserted into gravel and driven by a servo motor (53).