CN211799354U

CN211799354U - Engineering mud pretreatment systems

Info

Publication number: CN211799354U
Application number: CN201922299269.5U
Authority: CN
Inventors: 余子成; 季光明; 刘超
Original assignee: Road Environment Technology Co ltd
Current assignee: Road Environment Technology Co ltd
Priority date: 2019-12-19
Filing date: 2019-12-19
Publication date: 2020-10-30
Anticipated expiration: 2029-12-19

Abstract

The utility model provides an engineering mud pretreatment system, which comprises a pretreatment tank, a rotary grid and a sundry conveyor belt; the pretreatment pool is divided into a water distribution area, a sedimentation area and an overflow water outlet area, the water distribution area is triangular and gradually expands along the direction of the heavy object sedimentation area, the entrance slurry inlet is arranged at the foremost end of the water distribution area, and the flow velocity is uniformly distributed on the whole section under the action of the water distribution area; the rotary grating is arranged in the light impurity removing area, and the impurity conveying belt is arranged below the top of the rotary grating. The beneficial effects of the utility model reside in that: heavy impurities in the slurry are removed by the heavy object settling region, and light impurities are removed by the rotary grating, so that the impurity removal rate of the slurry is improved, and the damage of large-size impurities to a subsequent treatment device is avoided; sundries are automatically conveyed and collected by a sundry conveying belt; the water distribution area and the water outlet overflow wall can ensure that the flow velocity of slurry fluid is uniformly distributed, so that impurities can be removed more thoroughly.

Description

Engineering mud pretreatment systems

Technical Field

The utility model belongs to the environmental engineering field, concretely relates to engineering mud pretreatment systems.

Background

The engineering sludge to be treated contains various solid pollutants, such as heavy objects like building waste, stones, mud lumps, glass, metal, sand, etc., light objects like branches, plastics, etc., floating or suspended in the sludge, and unlike sewage treatment, the sludge has high solid pollutant content and is of various types.

Therefore, when removing solid dirt in slurry, it is difficult to remove light impurities and heavy impurities at one time.

SUMMERY OF THE UTILITY MODEL

For solving and being difficult to once only getting rid of clean technical problem with debris among the prior art, the utility model provides an engineering mud pretreatment systems.

The specific technical scheme is as follows:

an engineering mud pretreatment system, the difference being that the mud pretreatment system comprises: the device comprises a pretreatment tank, a rotary grid, a sundries conveyor belt and a sundries recovery device, wherein the pretreatment tank is provided with a pipeline inlet;

the pretreatment tank is divided into a water distribution area, a heavy object sedimentation area and a light impurity removal area, the water distribution area is triangular and gradually expands along the direction of the heavy object sedimentation area, and the slurry inlet is arranged at the front end of the water distribution area;

the rotary grating is arranged in the light impurity removing area, the impurity conveying belt is arranged below the top of the rotary grating, and impurities intercepted by the rotary grating fall onto the impurity conveying belt when being conveyed to the top of the rotary grating;

the sundries on the sundries conveying belt move to one end of the sundries conveying belt along the running direction of the sundries conveying belt, and the sundries on the sundries conveying belt are received and then are treated by the sundries recovery device.

Further, the heavy object settling zone is sequentially divided into a settling part and a storage part from top to bottom.

Further, the mud pretreatment system also comprises a high-pressure water spray head for washing the rotary grating.

Further, the sundries recovery device comprises a grid slag stacking area.

Further, the grid slag stacking area is sequentially divided into a grid slag storage part and a water accumulation part from top to bottom, and a draining plate is arranged between the grid slag storage part and the water accumulation part.

Furthermore, the grid slag stacking area is arranged below the sundry conveying belt, and sundries on the sundry conveying belt move to one end of the sundry conveying belt along the running direction of the sundry conveying belt and fall into the grid slag stacking area.

Further, the water accumulation part is provided with a drainage pump.

Furthermore, the sundries recovery device also comprises a transport vehicle, and the sundries on the sundries conveyor belt move to one end of the sundries conveyor belt along the running direction of the sundries conveyor belt and are transported to the grid slag stacking area to be processed after falling into the transport vehicle.

Further, a water distribution overflow wall is arranged between the heavy object settling area and the light impurity removing area.

Further, the light impurity removing area is provided with two rotary grids.

Compared with the prior art, the beneficial effects of the utility model reside in that: (1) heavy impurities in the slurry are removed by using the heavy object settling region, light impurities are removed by using the rotary grating, the impurity removal rate in the slurry is improved, and the damage of large-size impurities to a subsequent treatment device is avoided; (2) sundries are directly collected by the sundry conveying belt, so that the device is simple and convenient; (3) the water distribution area and the water distribution overflow wall can ensure that the slurry is uniformly distributed in the tank, so that the impurities are removed more thoroughly.

Drawings

FIG. 1 is a top view of a mud pretreatment system;

FIG. 2 is a top view of a mud pretreatment system;

FIG. 3 is a cross-sectional view of a mud pretreatment system;

FIG. 4 is a cross-sectional view of a mud pretreatment system;

FIG. 5 is a sectional view of a pretreatment tank;

in the drawings, the components represented by the respective reference numerals are listed below:

1-a pretreatment pool, 2-a rotary grid, 3-a sundry conveyor belt, 4-a sundry recovery device, 5-a high-pressure water nozzle, 6-a water distribution overflow wall, 101-a slurry inlet, 102-a water distribution area, 103-a weight settling area, 1031-a settling part, 1032-a storage part, 104-a light impurity removal area, 201-a grid steel platform, 401-a grid slag stacking area, 4011-a grid slag storage part, 4012-a water accumulation part, 4013-a draining plate, 4014-a draining pump and 402-a transport vehicle.

Detailed Description

The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.

Examples

An engineered mud pretreatment system, comprising: the device comprises a pretreatment tank 1, a rotary grating 2, a sundries conveyor belt 3 and a sundries recovery device 4, wherein the pretreatment tank 1 is provided with a slurry inlet 101; pretreatment tank 1 divide into water distribution district 102, heavy object settling zone 103 and light impurity and gets rid of district 104, water distribution district 102 is the triangle-shaped and follows the heavy object settling zone 103 direction enlarges gradually, mud import 101 sets up water distribution district 102, mud import 101 connect the mud pipeline, and this water distribution district structure is compared in other water distribution district simple structure ingeniously now, and the construction degree of difficulty is little, and is with low costs, is fit for the huge material of this kind of debris content of engineering mud, and mud can guarantee that mud follows settling zone section evenly distributed through water distribution district, and the control actual velocity of flow is in the design velocity of flow within range, guarantees debris removal efficiency.

A water distribution overflow wall 6 is arranged between the heavy object settling area 102 and the light impurity removing area 103, so that the discharged water is uniformly distributed, and the flow rate of the slurry on the whole operation section is uniform and consistent.

The heavy object settling zone 103 is sequentially divided into a settling part 1031 and a storage part 1032 from top to bottom, the flow velocity passing through the settling part 1031 is ensured to be within the range of 0.1-0.3 m/s, the heavy impurities are ensured to be fully settled, light mud is not precipitated, the volume of the storage part 1032 is set to be the sand storage amount of 48h, the storage part is periodically moved out to a sand storage yard arranged beside by a pump, an excavator or a grab bucket, and the storage part is transported outside to be used as building materials after being cleaned.

The light impurity removing area 104 is provided with two rotary grids 2 which are arranged on a grid steel platform 201, the impurity conveyor belt 3 is arranged below the tops of the rotary grids 2, and impurities intercepted by the rotary grids 2 automatically drop onto the impurity conveyor belt 3 when moving to the tops of the rotary grids 2; heavy impurities in the mud are removed through treatment of the heavy settling zone 103, then the mud is uniformly distributed and flows out through the water distribution overflow wall, the mud enters the light impurities removing zone, finally the light solid impurities floating and suspended in the mud are removed through the rotary grating 2, the net passing flow rate of the mud is controlled to be below 0.6m/s, and the light solid impurities are completely removed under the condition that the grating net is not blocked.

Debris recovery unit 4 stacks district 401 including the bars sediment, the bars sediment is stacked district 401 from last to dividing into bars sediment storage part 4011 and ponding part 4012 down in proper order, bars sediment storage part 4011 reaches install waterlogging board 4013 between the ponding part 4012, ponding part 4013 installs drain pump 4014, as shown in fig. 1 and 3, if the bars sediment is stacked district 401 and is far away from preliminary treatment, can open transport vechicle 402 to debris conveyer belt below, then the direct fortune of debris that falls into in transport vechicle 402 to bars sediment and stacks district 401.

As shown in fig. 2 and 4, the grid slag stacking area 401 may also be disposed below the sundry conveyor belt 3, and sundries on the sundry conveyor belt 3 move to one end of the sundry conveyor belt 3 along the operation direction of the sundry conveyor belt and fall into the grid slag stacking area 401, so as to directly collect grid slag and improve the treatment efficiency.

The recovered grid slag can be reused or disposed after draining, and water in the accumulated water part is collected and then drained back to the pretreatment tank by a drainage pump for treatment.

The mud pretreatment system also comprises a high-pressure water spray nozzle 5, wherein the high-pressure water spray nozzle 5 is arranged near the rotary grating 2 and the sundries conveying belt 3 to wash the rotary grating 2 and the sundries conveying belt 3, so that the blockage of the rotary grating 2 is avoided.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. An engineering mud pretreatment system, comprising: the device comprises a pretreatment tank (1), a rotary grating (2), a sundries conveyor belt (3) and a sundries recovery device (4), wherein the pretreatment tank (1) is provided with a slurry inlet (101);

the pretreatment pool (1) is divided into a water distribution area (102), a heavy object sedimentation area (103) and a light impurity removal area (104), the water distribution area (102) is triangular and gradually expands along the direction of the heavy object sedimentation area (103), and the slurry inlet (101) is arranged at the front end of the water distribution area (102);

the rotary grating (2) is arranged in the light impurity removing area (104), the sundries conveyor belt (3) is arranged below the top of the rotary grating (2), and sundries intercepted by the rotary grating (2) fall onto the sundries conveyor belt (3) when being transported to the top of the rotary grating (2);

the sundries on the sundries conveying belt (3) move to one end of the sundries conveying belt (3) along the running direction of the sundries conveying belt (3), and the sundries on the sundries conveying belt (3) are received and then are treated by the sundries recovery device (4).

2. The engineering mud pretreatment system of claim 1, wherein the weight settling zone (103) is divided into a settling section (1031) and a storage section (1032) in sequence from top to bottom.

3. The engineered mud pretreatment system of claim 1, further comprising a high pressure water jet (5) to flush the convoluted grate (2).

4. The engineered mud pretreatment system of claim 1, wherein the debris recovery device comprises a grid slag stacking area (401).

5. The engineering mud pretreatment system according to claim 4, wherein the grid slag stacking area (401) is sequentially divided into a grid slag storage part (4011) and a water accumulation part (4012) from top to bottom, and a draining plate (4013) is installed between the grid slag storage part (4011) and the water accumulation part (4012).

6. The engineering mud pretreatment system according to claim 4, wherein the grid slag stacking area is arranged below the sundry conveyor belt (3), and sundries on the sundry conveyor belt (3) move to one end of the sundry conveyor belt along the operation direction of the sundry conveyor belt and fall into the grid slag stacking area (401).

7. The engineered mud pretreatment system of claim 5, wherein the water accumulation section is equipped with a drain pump (4014).

8. The engineering mud pretreatment system according to any one of claims 4 to 7, wherein the debris recovery device further comprises a transport vehicle (402), wherein debris on the debris conveyor belt (3) moves to one end of the debris conveyor belt (3) along the operation direction of the debris conveyor belt (3), falls into the transport vehicle (402), and is transported to the grid slag stacking area (401) for processing.

9. The engineering sludge pretreatment system of claim 1, wherein a water distribution overflow wall (6) is arranged between the heavy settling zone (103) and the light impurity removal zone (104).

10. The engineered mud pretreatment system of claim 1, wherein the light contaminant removal zone (104) is provided with two convoluted grates (2).