CN211005047U - Sewage desliming device - Google Patents

Abstract

A sewage desliming device is provided with a filter belt conveyor, a vacuum pumping system, a desliming water discharge pipeline system, a mud scraper and a PLC control system; the vacuum pumping system has a vacuum pump and is communicated with the vacuum pump inlet at least one vacuum tank, the vacuum tank is arranged under the filter belt of the filter belt conveyor, the inner surface of the filter belt is close to the top plate of the vacuum tank, and the top plate has at least one opening; the deslimed water discharge pipeline system has at least one deslimed water discharge pipeline, one end of the deslimed water discharge pipeline is connected with the bottom space of the vacuum tank, the deslimed water discharge pipeline is provided with a first electric control cut-off valve and a second electric control cut-off valve; the mud scraper The plate is in slight contact with the outer surface of the filter belt; the PLC control system is electrically connected with the vacuum pump and the first and second electrically controlled stop valves. The device can effectively remove the sludge in the sewage containing a large amount of sludge, and the water content of the sludge is low.

Description

A sewage desliming device

technical field

The utility model relates to sewage treatment, in particular to a sewage desliming device.

Background technique

CN 205275438 U discloses an improved sludge dewatering system, comprising a water feeding device, a dewatering device, a conveying device, a mud storage tank, a hydraulic system and a control system. The water supply device is an air compressor driven by a pneumatic diaphragm. The dehydration device is mounted on a bracket, and one end of the bracket is welded with a funnel. The delivery device is placed under the funnel. The mud tank is placed at one end of the conveyor. In the hydraulic system, the hydraulic cylinder drives the dehydration device, and an electromagnetic relay valve is installed to set the oil circuit pressure. The control system adopts PLC control to realize the start and stop of the pump, the pressing of the dehydration group and the start and stop of the conveying device.

Utility model content

The utility model provides a sewage desliming device with a different working principle from the prior art.

The sewage desliming device of the utility model is provided with a filter belt conveyor, a vacuum pumping system, a desliming water discharge pipeline system, a mud scraper and a PLC control system; the vacuum pumping system has a vacuum pump and a connection with the vacuum pump At least one vacuum tank connected to the inlet, the vacuum tank is arranged under the filter belt of the filter belt conveyor, the inner surface of the filter belt is in close contact with the top plate of the vacuum tank, and the top plate has at least one opening; the deslimed water discharge pipeline The system has at least one deslimed water discharge pipeline, one end of the deslimed water discharge pipeline is communicated with the bottom space of the vacuum tank, and the deslimed water discharge pipeline is provided with a first electric control cut-off valve and a second electric control cut-off valve; the The scraper is in slight contact with the outer surface of the filter belt; the PLC control system is electrically connected with the vacuum pump and the first and second electrically controlled cut-off valves.

The sewage desliming device of the utility model has a filter belt conveyor and a vacuuming system, which can effectively remove the sludge in the sewage containing a large amount of sludge, and the water content of the sludge is low.

The sewage desliming device of the utility model also has a flushing system, which is arranged downstream of the scraper.

In this way, the residual sludge on the outer surface of the filter belt and the inside of the filter belt can be removed in time, and the filtration performance of the filter belt can be maintained.

Description of drawings

FIG. 1 is a schematic structural diagram of the sewage desliming device of the present invention.

Detailed ways

The specific embodiments of the present invention will be described below with reference to the accompanying drawings, and the features and advantages of the sewage desliming device of the present invention will be more obvious.

Referring to FIG. 1 , reference numeral 1 denotes a pool, and reference numeral 9 denotes a deflector. The deflector 9 is fixed at the left end of the pool 1 and is lower than the top surface of the pool 1 .

1, the sewage desliming device 100 of the present invention has a filter belt conveyor 2, a vacuum system 3, a deslimed water discharge pipeline system 4, a scraper 5, a flushing system 6 and a PLC control System 7.

The filter belt conveyor 2 is composed of a driving roller 21 driven by a motor, a driven roller 22 and a filter belt 23 . The filter belt 23 is endless and is tensioned on part of the roller surfaces of the driving roller 21 and the driven roller 22 .

The vacuum pumping system 3 consists of a vacuum pump 31, a vacuum pump inlet manifold 32, a first vacuum pump inlet branch pipe 33, a second vacuum pump inlet branch pipe 34, a vacuum pump outlet pipe 35, a first vacuum tank 36 and a second vacuum tank 37 constitute. One end of the vacuum pump inlet manifold 32 is communicated with the inlet of the vacuum pump 31 , and the other end is communicated with one end of the first vacuum pump inlet branch pipe 33 and the second vacuum pump inlet branch pipe 34 . The other end of the first vacuum pump inlet branch pipe 33 communicates with the upper space of the first vacuum tank 36 . The other end of the second vacuum pump inlet branch pipe 34 communicates with the upper space of the second vacuum tank 37 . One end of the vacuum pump outlet pipe 35 communicates with the outlet of the vacuum pump 31 . The top plate of the first vacuum tank 36 has an intermediate opening 38 . The top plate of the second vacuum tank 37 has an intermediate opening 39 .

The deslimed water discharge pipeline system 4 consists of a first deslimed water discharge pipeline 41 and a second deslimed water discharge pipeline 42 . One end of the first deslimed water discharge pipeline 41 communicates with the bottom space of the first vacuum tank 36 . One end of the second deslimed water discharge pipeline 42 communicates with the bottom space of the second vacuum tank 37 . A first electrically controlled cut-off valve 411 and a second electrically controlled cut-off valve 412 are installed on the first deslimed water discharge pipeline 41 . A first electrically controlled cut-off valve 421 and a second electrically controlled cut-off valve 422 are installed on the second deslimed water discharge pipeline 42 .

The driven roller 22 of the filter belt conveyor 2 is in the pool 1, the driven roller 22 of the filter belt conveyor 2 and the part of the filter belt 23 adjacent to the driven roller 22 are located below the deflector 9, and the filter belt conveys Most of the machine 2 is located above the pool 1. The width of the filter belt 23 of the filter belt conveyor 2 is basically the same as the width of the pool 1. The two edges of the filter belt 23 adjacent to the driven roller 22 are on both sides of the pool 1. The wall is slightly touching.

The scraper 5 is fixedly supported and obliquely below the outer side of the driving roller 21 of the filter belt conveyor 2, and is arranged obliquely, and its top edge is in slight contact with the outer surface of the filter belt 23 of the filter belt conveyor 2, and its bottom edge Above the sludge tank 8.

The plurality of nozzles 61 of the flushing system 6 are below the scraper 5 , towards the outer surface of the filter belt 23 of the filter belt conveyor 2 .

The PLC control system 7 and the vacuum pump 31 of the vacuum pumping system 3 , the first electrically controlled cut-off valve 411 and the second electrically controlled cut-off valve 412 on the first deslimed water discharge pipeline 41 , and the No. An electrically controlled cut-off valve 421 is electrically connected to the second electrically controlled cut-off valve 422 .

The operation of the sewage desliming device 100 of the present invention is as follows:

The sewage desliming device 100 is started, the motor of the driving roller 21 of the filter belt conveyor 2 is started, and the inner surface of the filter belt 23 of the filter belt conveyor 2 is in close contact with the top plates of the first vacuum tank 36 and the second vacuum tank 37, surrounding the The driving roller 21 and the driven roller 22 move, the PLC control system 7 controls the first electronically controlled cut-off valve 411 on the first deslimed water discharge pipeline 41 of the deslimed water discharge pipeline system 4 to open, and the second electronically controlled cut-off valve 412 is closed, the first electric control cut-off valve 421 on the second deslimed water discharge pipeline 42 is opened, the second electric control cut-off valve 422 is closed, the vacuum pump 31 is controlled to start, and a certain vacuum is formed in the first vacuum tank 36 and the second vacuum tank 37. vacuum.

The sewage with a large amount of sludge, which is marked as 10, flows to the outer surface of the filter belt 23 through the deflector 9, and the larger particles of sludge contained in the sewage and a small amount of water entrained by these larger particles of sludge remain in the filter belt. On the outer surface of 23 , the sludge with smaller particles and a large amount of water contained in the sewage pass through the filter belt 23 and fall into the pool 1 to become the water containing the sludge with smaller particles indicated by the numeral 20 . The larger particles of sludge and a small amount of water entrained by these larger particles of sludge arrive at the middle opening 38 of the top plate of the first vacuum tank 36 and the middle opening 39 of the top plate of the second vacuum tank 37 with the filter belt 23 in sequence, Under the action of the vacuum formed in the first vacuum tank 36 and the second vacuum tank 37, a small amount of water entrained by these larger particles of sludge is drawn into the first vacuum tank 36 and the second vacuum tank through the filter belt 23, respectively. In the tank 37, it becomes deslimed water. After removing a small amount of water, the larger particles of sludge reach the scraper 5 with the filter belt 23, and most of the larger particles of sludge 30 are scraped off the outer surface of the filter belt 23 and fall into the sludge tank 8. Inside, the sludge with a small amount of larger particles left on the outer surface of the filter belt 23 reaches the plurality of nozzles 61 of the washing system 6 with the filter belt 23, and the water sprayed from the plurality of nozzles 61 flows from the outer surface of the filter belt 23. rinse off. After the set time has elapsed, the PLC control system 7 controls the first electrically controlled cut-off valve 411 on the first deslimed water discharge pipeline 41 of the deslimed water discharge pipeline system 4 to close, the second electrically controlled cut-off valve 412 to open, and the second electrically controlled cut-off valve 412 to open. The first electric control cut-off valve 421 on the deslimed water discharge pipeline 42 is closed, the second electric control cut-off valve 422 is opened, and the first electric control cut-off valve 411 and the second electric control cut-off valve 412 from the first vacuum tank 36 are located between the first electric control cut-off valve 411 and the second electric control cut-off valve 412. between the first deslimed water discharge pipeline 41 and the second deslimed water discharge pipeline 42 from the second vacuum tank 37 between the first electrically controlled cut-off valve 421 and the second electrically controlled cut-off valve 422 At the same time, the deslimed water is discharged under the action of gravity, directly into the pool 1, or into other pipelines.

The PLC control system 7 regularly controls and switches the opening and closing of the first electrically controlled cut-off valve 411 and the second electrically controlled cut-off valve 412 on the first deslimed water discharge pipeline 41 of the deslimed water discharge pipeline system 4 and the opening and closing of the second deslimed water discharge pipeline The first electrically controlled cut-off valve 421 and the second electrically controlled cut-off valve 422 on the road 42 are opened and closed, and the sewage desliming device 100 of the present invention can operate continuously.

Claims (2)

1. A sewage desliming device is characterized by comprising a filter belt conveyor, a vacuum pumping system, a desliming water discharge pipeline system, a mud scraping plate and a P L C control system, wherein the vacuum pumping system comprises a vacuum pump and at least one vacuum groove communicated with an inlet of the vacuum pump, the vacuum groove is arranged below a filter belt of the filter belt conveyor, the inner surface of the filter belt is tightly attached to a top plate of the vacuum groove, the top plate is provided with at least one opening, the desliming water discharge pipeline system comprises at least one desliming water discharge pipeline, one end of the desliming water discharge pipeline is communicated with the bottom space of the vacuum groove, the desliming water discharge pipeline is provided with a first electric control stop valve and a second electric control stop valve, the mud scraping plate is slightly contacted with the outer surface of the filter belt, and the P L C control system is electrically connected with the vacuum pump and the first electric control stop valve and the second electric stop valve.

2. The sewage desliming apparatus of claim 1, further comprising a flushing system disposed downstream of the scraper.

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