CN215209081U

CN215209081U - Sludge dewatering device

Info

Publication number: CN215209081U
Application number: CN202121777755.4U
Authority: CN
Inventors: 陈惠波
Original assignee: Foshan Lvyu Environmental Protection Technology Co ltd
Current assignee: Foshan Lvyu Environmental Protection Technology Co ltd
Priority date: 2021-07-30
Filing date: 2021-07-30
Publication date: 2021-12-17
Anticipated expiration: 2031-07-30

Abstract

The utility model discloses a silt dewatering device, including collecting pit, swirler, filtering ponds, dispersion tank and filter-pressing dewatering device, the collecting pit is through first conveyer pipe intercommunication swirler, the last export intercommunication filtering ponds of swirler, the lower export and the dispersion tank intercommunication of swirler, the dispersion tank is equipped with medicine mechanism, it is used for adding the dispersing agent to add medicine mechanism, the export intercommunication filter-pressing dewatering device of dispersion tank. The utility model provides a silt dewatering device, through the medicine mechanism and the filter-pressing dehydration form that set up, medicine mechanism can add the dispersant to the silt that the flocculation and precipitation produced, makes it break up, makes the moisture in the flocculent silt release more easily, and then can be through the filter-pressing dewatering device who sets up, and the moisture in the silt is detached by the extrusion more easily, reaches deep dehydration effect.

Description

Sludge dewatering device

Technical Field

The utility model relates to a silt processing technology field, in particular to silt dewatering device.

Background

In the existing sewage treatment process, a flocculation precipitation method is usually adopted, suspended particles and colloidal substances of a fine particle machine in sewage form large particles or large blocks of flocculation precipitates under the action of a flocculating agent, and finally, the large particles or the large blocks of flocculation precipitates are removed through solid-liquid separation to obtain purified water. The flocculated sediment, which usually contains high moisture content and is inconvenient to transport and use, is usually subjected to half-frame filter pressing and centrifugal dewatering to reduce the moisture content of the sludge. However, due to the existence of the flocculant, particularly the organic flocculant is adopted, the water is contained in the floccules, the difficulty of removing the water is increased, and the water content of the sludge after filter pressing is still as high as 90 percent, so that the transportation cost of the sludge is high, and the utilization rate of the sludge is reduced.

It is seen that improvements and enhancements to the prior art are needed.

SUMMERY OF THE UTILITY MODEL

In view of the foregoing disadvantages of the prior art, an object of the present invention is to provide a sludge dewatering device, which aims to solve the problems of high moisture content and difficulty in dewatering of the sludge in the prior art.

In order to achieve the purpose, the utility model adopts the following technical proposal:

the utility model provides a silt dewatering device, wherein, includes collecting pit, swirler, filtering ponds, dispersion tank and filter-pressing dewatering device, the collecting pit is through first conveyer pipe intercommunication swirler, the last export intercommunication filtering ponds of swirler, the lower export and the dispersion tank intercommunication of swirler, the dispersion tank is equipped with medicine mechanism, medicine mechanism is used for adding the dispersant, the export intercommunication filter-pressing dewatering device of dispersion tank.

In the sludge dewatering device, the dosing mechanism is arranged on a pipeline communicated with the cyclone and the dispersion tank.

Among the silt dewatering device, the filter-pressing dewatering device includes one-level filter-pressing mechanism and second grade filter-pressing mechanism, the direction of transmission of silt is perpendicular downwards among the one-level filter-pressing mechanism, silt is horizontal transmission among the second grade filter-pressing mechanism.

Among the silt dewatering device, one-level filter-pressing mechanism includes first casing, vertical one-level pressure that sets up in first casing strain a section of thick bamboo and set up the first screw rod that a section of thick bamboo was strained to one-level pressure, still includes the first actuating mechanism who rotates the connection with first screw rod.

In the sludge dewatering device, the secondary filter pressing mechanism comprises a second shell, a secondary pressure filter cylinder horizontally arranged in the second shell, a second screw arranged in the secondary pressure filter cylinder and a second driving mechanism in transmission connection with the second screw.

Among the silt dewatering device, the collecting pit is equipped with first rabbling mechanism, the dispersion tank is equipped with second rabbling mechanism.

Among the silt dewatering device, one-level filter pressing mechanism is equipped with first outlet, second grade filter pressing mechanism is equipped with the second outlet, first outlet and second outlet all communicate the collecting vat that sets up through the pipeline, the collecting vat is equipped with the drain pipe, be equipped with the water pump on the drain pipe, drain pipe intercommunication filtering ponds.

Has the advantages that:

the utility model provides a silt dewatering device, through the medicine mechanism and the filter-pressing dewatering device that set up, medicine mechanism can add the dispersant to the silt that the flocculation and precipitation produced, makes it break up, makes the moisture in the flocculent silt release more easily, and then can be through the filter-pressing dewatering device who sets up, and the moisture in the silt is detached by the extrusion more easily, reaches deep dehydration effect.

Drawings

Fig. 1 is a schematic structural diagram of a sludge dewatering device provided by the present invention.

Fig. 2 is a schematic structural diagram II of the sludge dewatering device.

The figures are numbered: 1-a collection tank, 2-a cyclone, 3-a filter tank, 4-a dispersion tank, 5-a filter-press dehydration device, 6-a first stirring mechanism, 7-a first delivery pipe, 8-a first mud delivery pump, 9-an inlet, 10-an upper outlet, 11-a lower outlet, 12-a second stirring mechanism, 13-a dosing mechanism, 14-a medicine storage tank, 15-a medicine delivery pipe, 16-a switch valve, 17-a third delivery pipe, 18-a second mud delivery pump, 19-a first shell, 20-a first filter-press cylinder, 21-a first screw, 22-a first driving mechanism, 23-a first extrusion channel, 24-a first water passing channel, 25-a first sludge inlet, 26-a first sludge outlet, 27-a first water discharging port, 28-a second shell, 29-a second press cartridge, 30-a second screw, 31-a second drive mechanism, 32-a second extrusion channel, 33-a second water passage, 34-a second sludge inlet, 35-a second water discharge, 36-a sludge discharge pipe, 37-a water collection sump, 38-a water pump.

Detailed Description

The utility model provides a silt dewatering device, for making the utility model discloses a purpose, technical scheme and effect are clearer, make clear and definite, and it is right that the following refers to the attached drawing and the embodiment of lifting the utility model discloses further detailed description. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

In the description of the embodiments of the present invention, it should be noted that the terms "inside", "outside", "upper", "lower", "left", "right", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that are conventionally placed when the products of the present invention are used, and are only used for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements to be referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present invention, it should be further noted that, unless explicitly stated or limited otherwise, the terms "disposed" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be mechanically coupled, directly coupled, indirectly coupled through intervening media, or may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 and 2, the present invention provides a sludge dewatering device, which includes a collecting tank 1, a cyclone 2, a filtering tank 3, a dispersing tank 4 and a filter-pressing dewatering device 5. The collecting tank 1 is used for collecting sludge separated after flocculation and precipitation and is communicated with an inlet 9 of the cyclone 2 through a pipeline with a sludge conveying pump; swirler 2 is through its centrifugal action, tentatively gets rid of the moisture in the silt, and last export 10 of swirler 2 passes through pipeline and 3 intercommunications of filtering ponds, and the lower export 11 of swirler 2 passes through pipeline and 4 intercommunications of dispersion tank to be equipped with medicine mechanism 13 on the pipeline of intercommunication, medicine mechanism 13 is used for adding the dispersant, the dispersant is used for breaing up the flocculation and deposits, makes the moisture in the flocculation and deposits released, pipeline intercommunication filter-pressing dewatering device 5's entry 9 is passed through in the export of dispersion tank 4, filter-pressing dewatering device 5 is used for carrying out the filter-pressing dehydration to silt, reduces moisture content in the silt.

As shown in fig. 1 and fig. 2, in the sludge dewatering device, the collecting tank 1 is a tank body with a conical bottom, an inlet 9 of the collecting tank is communicated with a flocculation sedimentation tank in the wastewater treatment device through a pipeline, and sludge generated by the flocculation sedimentation tank is conveyed into the collecting tank 1 through a pipeline. The collecting tank 1 is provided with a first stirring mechanism 6, and sludge is homogenized through stirring of the first stirring mechanism 6. The bottom of the collecting tank 1 is connected with a first conveying pipe 7, a first mud conveying pump 8 is arranged on the first conveying pipe 7, and the output end of the first mud conveying pump 8 is communicated with an inlet 9 of the cyclone 2.

In one embodiment, as shown in fig. 1 and 2, the cyclone 2 of the sludge dewatering device is provided with an inlet 9, an upper outlet 10 and a lower outlet 11, wherein the inlet 9 is communicated with the output end of the first sludge pump 8, the upper outlet 10 is communicated with the filtering tank 3, and the lower outlet 11 is communicated with the dispersing tank 4 through a second conveying pipe. The cyclone 2 has a centrifugal separation function, and sludge entering the cyclone 2 through the inlet 9 flows out through the upper outlet 10 under the centrifugal action, and heavy flocculated sediment flows out through the lower outlet 11. The cyclone 2 plays a role in primarily removing moisture in the sludge.

As shown in fig. 1 and 2, in the sludge dewatering device, water flowing out of an upper outlet 10 of the cyclone 2 flows into the filter tank 3 through a pipeline, the filter tank 3 is filled with activated carbon or modified alumina, and the activated carbon and the modified alumina have good adsorption and filtration effects, so that solid impurities, fine particles, colored substances and the like in the water can be adsorbed and removed, and the water quality meets the discharge requirement.

As shown in fig. 1, in the above sludge dewatering device, water flowing out from the lower outlet 11 of the cyclone 2 enters the dispersion tank 4, the dispersion tank 4 is also a tank body with a conical bottom, the dispersion tank 4 is provided with a dosing mechanism 13 and a second stirring mechanism 12, the dosing mechanism 13 includes a medicine storage tank 14 and a medicine conveying pipe 15, the outlet of the medicine storage tank 14 is provided with a switch valve 16, and a dispersant is stored in the medicine storage tank 14. The dosing mechanism 13 is used for adding a dispersing agent, the added dispersing agent can react with flocculation and precipitation to break up large or large granular flocculation and precipitation, so that moisture is released, and the moisture is better removed during filter pressing. The second stirring mechanism 12 is used for better mixing the dispersing agent with the sludge, accelerating the reaction and homogenizing the sludge after the reaction.

In the above configuration, the chemical adding means 13 is provided on the dispersion tank 4, and the dispersant and the sludge can be mixed by stirring, but the mixing speed depends on the stirring speed of the stirring means. As another embodiment, as shown in fig. 2, the chemical adding mechanism 13 is disposed on the second conveying pipe, and the chemical conveying pipe 15 is communicated with the second conveying pipe, so that the added dispersing agent can be conveyed into the dispersing tank 4 together with the sludge, and in the conveying process, the dispersing agent reacts with the flocculation and sedimentation in a mixing manner, and after entering the dispersing tank 4, the dispersing agent is stirred and mixed by the action of the second stirring mechanism 12, so that a better dispersing effect is achieved.

As shown in fig. 1 and 2, in the sludge dewatering device with the above structure, the bottom of the dispersion tank 4 is connected with a third delivery pipe 17, a second sludge pump 18 is arranged on the third delivery pipe 17, and the output end of the sludge pump is communicated with the filter-pressing dewatering device 5.

The filter-pressing dewatering device 5 comprises a longitudinally arranged one-level filter-pressing mechanism and a transversely arranged second-level filter-pressing mechanism, wherein a sludge outlet of the filter-pressing of the one-level filter-pressing mechanism is communicated with a sludge inlet 9 of the second-level filter-pressing mechanism, and through filter pressing of the two-level filter-pressing mechanism, moisture in sludge is removed to a large extent, so that the moisture content of the sludge is reduced.

As shown in fig. 1 and 2, the primary filter pressing mechanism includes a first cylindrical housing 19, a first filter pressing cylinder 20 and a first screw 21 vertically disposed in the first housing 19, and a first driving mechanism 22 disposed outside the first housing 19, wherein an output end of the first driving mechanism 22 is in transmission connection with one end of the first screw 21, and is used for driving the first screw 21 to rotate. The first filter press cartridge 20 is a cylinder with openings at both ends, and the body of the cylinder is provided with meshes which only allow water to pass through. The diameter of the first pressure filter cylinder 20 is smaller than the inner diameter of the first shell 19, the first pressure filter cylinder 20 is fixed in the middle position inside the first shell 19, the outer wall of the first pressure filter cylinder 20 is not in contact with the inner wall of the first shell 19, the first pressure filter cylinder 20 divides the inner cavity of the first shell 19 into a first extrusion channel 23 and a first water passing channel 24, a first sludge inlet 25 is arranged at the upper part of the first extrusion channel 23, the first sludge inlet 25 is communicated with the output end of the second sludge pump 18, a first sludge discharge port 26 is arranged at the lower part of the first extrusion channel 23, the first sludge discharge port 26 is communicated with a sludge inlet 9 of the second-stage pressure filter mechanism through a pipeline, a first water discharge port 27 is arranged at the bottom of the first water passing channel 24, and the first water discharge port 27 is communicated with a water collecting tank 37 through a pipeline. In operation, the sludge discharged from the dispersion tank 4 is conveyed to the first sludge inlet 25 through the second sludge conveying pump 18, then enters the first extrusion channel 23, meanwhile, the first screw 21 rotates under the action of the first driving motor, the sludge entering the first extrusion channel 23 rotates and is extruded downwards for conveying, during the conveying process, moisture in the sludge enters the first water passing channel 24 through the first pressure filter cylinder 20, the moisture is discharged into the water collecting tank 37 through the first water discharging port 27, and the dewatered sludge is conveyed to the second-stage pressure filter mechanism through the first sludge discharging port 26. Because the sludge is the sludge scattered by the dispersing agent, the water cannot be coated by massive flocculation and precipitation, and then the water is extruded more easily under the extrusion of the first screw 21, so that the dehydration effect of the primary filter pressing mechanism is improved.

As shown in fig. 1 and 2, the secondary filter pressing mechanism includes a second casing 28, a cylindrical cavity is transversely arranged inside the second casing 28, a second filter pressing cylinder 29 and a second screw 30 are arranged in the cavity, and an end of the second screw 30 passes through the second casing 28 and is in transmission connection with a second driving mechanism 31. The second pressure cartridge 29 is horizontally and transversely centered in the cavity, the second pressure cartridge 29 likewise being provided with water-permeable, sludge-impermeable meshes. The second filter press cylinder 29 also divides the cavity in the second casing 28 into a second water passing passage 33 outside the second filter press cylinder 29 and a second extruding passage 32 inside the second filter press cylinder 29, and a second sludge inlet 34 is provided at one end of the second extruding passage 32, a sludge discharge pipe 36 is connected to the other end of the second extruding passage 32, the second sludge inlet 34 communicates with the first sludge discharge port 26, the second water passing passage 33 is provided at a lower portion thereof with a second water discharge port 35, and the second water discharge port 35 communicates with the water collecting tank 37 through a pipe. During operation, the sludge after filter pressing and dewatering by the first-stage filter pressing mechanism enters the second extrusion channel 32 from the second sludge inlet 34, is conveyed forwards transversely under the extrusion action of the second screw 30, and is further extruded to penetrate through the second filter pressing cylinder 29 through extrusion, so that the further dewatering effect is achieved, the dewatered sludge is discharged by the sludge discharge pipe 36 and can be transported or utilized after being collected by the collecting device, and the dewatered water is conveyed to the water collecting tank 37 through the second water outlet 35.

As shown in fig. 1 and 2, the water collecting tank 37 is connected to a drain pipe, and a water pump 38 is arranged on the drain pipe, and the water is conveyed to the filtering tank 3 through the drain pipe, and reaches the discharge standard through the filtering of the filtering tank 3.

Above-mentioned filter-pressing dewatering device 5 adopts the combination of the one-level filter-pressing mechanism of vertical downward transmission and the horizontal transmission's second grade filter-pressing mechanism, and the one-level filter-pressing mechanism of vertical downward transmission has the fast characteristics of filter-pressing speed, second grade filter-pressing mechanism is because horizontal transmission, so filter-pressing speed is slower than one-level filter-pressing mechanism, but the extrusion force of applying is big, consequently can more deep dewater silt, silt after one-level filter-pressing mechanism and the dehydration of second grade filter-pressing mechanism, its moisture content is low to 34%, great reduction moisture content in the silt to reduce the cost of silt transportation.

To sum up, the silt dewatering device of above-mentioned structure adds the dispersant through the silt to the flocculation and precipitation production, makes it break up to make the moisture in the flocculent silt release more easily, and then at the in-process of filter-pressing, the moisture in the silt is detached more easily, and filter-pressing dewatering device 5 is through setting up two-stage filter-pressing mechanism to for the two-stage filter-pressing mechanism of different direction of transmission, the extrusion force that makes the silt receive is different, and then makes the degree of depth of dehydration different, reaches deep dehydration effect.

It is understood that equivalents and changes may be made to the technical solution of the present invention and its concept by those skilled in the art, and all such changes and substitutions shall fall within the scope of the appended claims.

Claims

1. The utility model provides a silt dewatering device, its characterized in that, includes collecting pit, swirler, filtering ponds, dispersion tank and filter-pressing dewatering device, the collecting pit is through first conveyer pipe intercommunication swirler, the last export intercommunication filtering ponds of swirler, the lower export and the dispersion tank intercommunication of swirler, the dispersion tank is equipped with medicine mechanism, it is used for adding the dispersant to add medicine mechanism, the export intercommunication filter-pressing dewatering device of dispersion tank.

2. The sludge dewatering apparatus of claim 1, wherein the dosing mechanism is disposed on a conduit communicating the cyclone and the dispersion tank.

3. The sludge dewatering device of claim 1, wherein the filter-press dewatering device comprises a primary filter-press mechanism and a secondary filter-press mechanism, wherein the sludge in the primary filter-press mechanism is transported vertically downwards, and the sludge in the secondary filter-press mechanism is transported horizontally.

4. The sludge dewatering apparatus of claim 3, wherein the primary filter press mechanism comprises a first housing, a primary filter press cartridge vertically disposed within the first housing, a first screw disposed within the primary filter press cartridge, and a first drive mechanism rotatably coupled to the first screw.

5. The sludge dewatering apparatus of claim 3, wherein the secondary filter press mechanism comprises a second housing, a secondary pressure filter cartridge disposed horizontally within the second housing, a second screw disposed within the secondary pressure filter cartridge, and a second drive mechanism drivingly connected to the second screw.

6. The sludge dewatering apparatus of claim 1, wherein the collection basin is provided with a first agitation mechanism and the dispersion basin is provided with a second agitation mechanism.

7. The sludge dewatering device according to claim 3, wherein the first stage filter pressing mechanism is provided with a first water outlet, the second stage filter pressing mechanism is provided with a second water outlet, the first water outlet and the second water outlet are communicated with a collecting tank through a pipeline, the collecting tank is provided with a water drainage pipe, a water pump is arranged on the water drainage pipe, and the water drainage pipe is communicated with the filtering tank.