Sludge dewatering equipment for domestic sewage treatment

Abstract

The utility model relates to the related technical field of sewage treatment, and discloses sludge dewatering equipment for domestic sewage treatment, which comprises a base, a fixing rod fixedly connected to the base, a mounting plate fixedly connected to the top of the fixing rod, and a dewatering barrel fixedly connected to the fixing rod and arranged between the mounting plate and the base. The top of the dewatering barrel is fixedly connected with a limiting check block, a lifting barrel is connected into the dewatering barrel in a sliding mode, the bottom of the lifting barrel is fixedly connected with a filter pressing block, the filter pressing block is connected with the inner wall of the dewatering barrel in a sliding mode, and the filter pressing block is in interference fit with the limiting check block. Then water in the slurry is filtered out through the arrangement of a filter pressing block and a filter membrane, at the moment, the distance between the slurry and the filter membrane can be reduced through the arrangement of a dewatering barrel and a conical barrel, the smaller the thickness of the slurry on the filter membrane is, the higher the filtering speed is, and therefore the slurry filtering speed of the equipment is increased, and the practicability of the equipment is improved.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, specifically a sludge dewatering device for domestic wastewater treatment. Background Technology

[0002] Wastewater treatment is an important part of environmental protection, and sludge treatment is a key component. Traditional sludge treatment methods mainly include two steps: sludge dewatering and sludge solidification.

[0003] Traditional sludge dewatering methods mainly include filter press, centrifugation, and thickening. These methods suffer from low processing efficiency, high energy consumption, and complex equipment. Furthermore, the dewatered sludge still contains a high moisture content, making subsequent treatment and disposal difficult.

[0004] Sludge solidification involves heating or adding solidifying agents to dewatered sludge, causing it to solidify into a firm solid. Traditional sludge solidification methods include sintering, solidifying agent methods, and hot pressing. These methods suffer from problems such as high energy consumption, unstable solidification results, and difficulty in handling the solidified solid. Utility Model Content

[0005] The purpose of this invention is to provide a sludge dewatering device for domestic sewage treatment, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A sludge dewatering device for domestic sewage treatment includes a base, a fixed rod fixedly connected to the base, an mounting plate fixedly connected to the top of the fixed rod, a dewatering tank fixedly connected to the fixed rod between the mounting plate and the base, a limit block fixedly connected to the top of the dewatering tank, a lifting cylinder slidably connected inside the dewatering tank, a filter press fixedly connected to the bottom of the lifting cylinder, the filter press slidably connected to the inner wall of the dewatering tank, and the filter press and the limit block are interference fit, a sludge spray nozzle fixedly connected inside the lifting cylinder, a sludge injection pipe fixedly connected to the tail of the sludge spray nozzle, the feed end of the sludge injection pipe passing through the lifting cylinder and connected to a sewage discharge device, a sealing groove fixedly connected to the bottom of the dewatering tank, a sealing plate slidably connected inside the sealing groove, a conical cylinder fixedly connected to the sealing plate, the conical cylinder being placed inside the dewatering tank, the filter press slidably connected to the outer wall of the conical cylinder, a filter membrane fixedly connected inside the conical cylinder, a liquid collection hopper fixedly connected to the bottom of the conical cylinder, and a drain pipe fixedly connected to the liquid collection hopper;

[0008] The bottom of the dewatering tank is equipped with a separation component for separating and detaching the dewatered mud blocks.

[0009] As a further embodiment of this utility model: a first hydraulic telescopic pump is fixedly connected to the mounting plate, and the output shaft of the first hydraulic telescopic pump is fixedly connected to the lifting cylinder.

[0010] As a further embodiment of this utility model: a second hydraulic telescopic pump is fixedly connected to the base, and a lifting frame is fixedly connected to the output shaft of the second hydraulic telescopic pump. The lifting frame is fixedly connected to the sealing plate.

[0011] As a further embodiment of this utility model: the separation component includes multiple sets of circumferentially distributed cutting blades fixedly connected to the inner wall of the bottom of the dehydration tank, and a ring cutting blade is fixedly connected to the end of the cutting blade away from the dehydration tank, and the ring cutting blade is slidably connected to the outer wall of the conical cylinder.

[0012] As a further embodiment of this utility model: a collecting hopper is fixedly connected to the outer wall of the sealing plate, the collecting hopper is inclined, and a mud outlet is provided at the low point of the collecting hopper.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model first injects sludge into the annular space formed by the dewatering tank and the conical cylinder, and then filters out the water in the sludge by setting up the filter press block and the filter membrane. At this time, the spacing between the sludge and the filter membrane can be reduced by setting up the dewatering tank and the conical cylinder. The smaller the thickness of the sludge on the filter membrane, the faster the filtration speed, thereby accelerating the filtration rate of the equipment and improving the practicality of the equipment. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a sludge dewatering device for domestic sewage treatment according to the present invention.

[0015] Figure 2 This is a cross-sectional view of a sludge dewatering device for domestic sewage treatment according to the present invention.

[0016] Figure 3 This is a schematic diagram of the dewatering tank in a sludge dewatering device for domestic sewage treatment according to this utility model.

[0017] Figure 4 This is a schematic diagram of the conical cylinder in a sludge dewatering device for domestic sewage treatment according to this utility model.

[0018] In the diagram: 1-base, 2-fixed rod, 3-mounting plate, 4-dewatering bucket, 5-cutting blade, 6-ring cutter, 7-sealing groove, 8-limiting block, 9-first hydraulic telescopic pump, 10-lifting cylinder, 11-filter press block, 12-mud injection pipe, 13-mud spray nozzle, 14-second hydraulic telescopic pump, 15-lifting frame, 16-sealing plate, 17-conical cylinder, 18-filter membrane, 19-liquid collection hopper, 20-drain pipe, 21-collecting hopper, 22-mud outlet. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] See Figures 1-4 In this embodiment of the utility model, a sludge dewatering device for domestic sewage treatment includes a base 1, a fixed rod 2 fixedly connected to the base 1, an mounting plate 3 fixedly connected to the top of the fixed rod 2, a dewatering tank 4 fixedly connected to the fixed rod 2 between the mounting plate 3 and the base 1, a limit block 8 fixedly connected to the top of the dewatering tank 4, a lifting cylinder 10 slidably connected inside the dewatering tank 4, a filter press 11 fixedly connected to the bottom of the lifting cylinder 10, the filter press 11 slidably connected to the inner wall of the dewatering tank 4, and the filter press 11 and the limit block 8 are interference fit, a sludge spray nozzle 13 fixedly connected inside the lifting cylinder 10, a sludge injection pipe 12 fixedly connected to the tail of the sludge spray nozzle 13, the feed end of the sludge injection pipe 12 passing through the lifting cylinder 10 and connected to the sewage discharge equipment, and a sludge spray nozzle 13 fixedly connected to the bottom of the dewatering tank 4. A sealing groove 7 is provided, with a sealing plate 16 slidably connected inside. A conical cylinder 17 is fixedly connected to the sealing plate 16 and is disposed inside the dewatering tank 4. The filter press block 11 is slidably connected to the outer wall of the conical cylinder 17. A filter membrane 18 is fixedly connected inside the conical cylinder 17. A liquid collecting hopper 19 is fixedly connected to the bottom of the conical cylinder 17 and a drain pipe 20 is fixedly connected to the liquid collecting hopper 19. A first hydraulic telescopic pump 9 is fixedly connected to the mounting plate 3, and the output shaft of the first hydraulic telescopic pump 9 is fixedly connected to the lifting cylinder 10. A second hydraulic telescopic pump 14 is fixedly connected to the base 1, and a lifting frame 15 is fixedly connected to the output shaft of the second hydraulic telescopic pump 14. The lifting frame 15 is fixedly connected to the sealing plate 16. A separation component is provided at the bottom of the dewatering tank 4.

[0021] This invention first injects sludge into the injection port 13 via the sludge discharge device through the sludge injection pipe 12, and then sprays it into the lifting cylinder 10 through the injection port 13. At this time, the sludge flows into the space between the conical cylinder 17 and the dewatering tank 4 through the conical cylinder 17. After a sufficient amount of sludge is injected, the first hydraulic telescopic pump 9 drives the lifting cylinder 10 to press down. The lifting cylinder 10 drives the base 1 to be inserted between the conical cylinder 17 and the dewatering tank 4, thereby pressurizing the sludge through the base 1. Then, the water in the sludge is filtered out through the filter membrane 18. At this time, the sludge is dewatered and forms mud blocks. Mud clumps adhere to the outer wall of the conical cylinder 17. The filtered water is discharged along the collection hopper 19 and the drain pipe 20. Then, the second hydraulic telescopic pump 14 drives the lifting frame 15 to descend. The lifting frame 15 drives the sealing plate 16 to descend. The sealing plate 16 drives the conical cylinder 17 to descend synchronously. At this time, the base 1 descends synchronously under the drive of the first hydraulic telescopic pump 9, thereby pushing the mud clumps adhering to the outer wall of the conical cylinder 17 out of the dewatering tank 4. During the pushing process, the dewatered mud clumps are separated from the outer wall of the conical cylinder 17 and discharged through the separation component.

[0022] After the discharge is completed, reverse the above process to quickly reset the equipment. Then repeat the above process to achieve cyclic processing.

[0023] In one instance of this embodiment, please refer to Figures 1-4 The separation component includes multiple sets of circumferentially distributed cutting blades 5 fixedly connected to the inner wall of the bottom of the dewatering tank 4. A ring cutting blade 6 is fixedly connected to the end of the cutting blade 5 away from the dewatering tank 4. The ring cutting blade 6 is slidably connected to the outer wall of the conical cylinder 17. A collection hopper 21 is fixedly connected to the outer wall of the sealing plate 16. The collection hopper 21 is inclined. A mud outlet 22 is provided at the lowest point of the collection hopper 21. The separation component peels off the mud lumps attached to the outer wall of the conical cylinder 17 by the ring cutting blade 6. The peeled mud lumps are then cut into small pieces by the cutting blades 5. The small mud lumps fall into the collection hopper 21 under the action of gravity. Then, the mud lumps are discharged from the mud outlet 22 along the inclined direction of the collection hopper 21 under the action of gravity.

[0024] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0025] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A sludge dewatering apparatus for domestic sewage treatment comprising a base, characterized by, The base is fixedly connected with a fixed rod, the top of the fixed rod is fixedly connected with a mounting plate, a dehydration barrel is arranged between the mounting plate and the base and is fixedly connected with the fixed rod, the top of the dehydration barrel is fixedly connected with a limiting block, a lifting cylinder is slidably connected in the dehydration barrel, a filter pressing block is fixedly connected to the bottom of the lifting cylinder, the filter pressing block is slidably connected with the inner wall of the dehydration barrel, the filter pressing block is in interference fit with the limiting block, a mud injection port is fixedly connected in the lifting cylinder, the tail of the mud injection port is fixedly connected with a mud injection pipe, the feed end of the mud injection pipe penetrates through the lifting cylinder and is connected with a pollution control equipment, a sealing groove is fixedly connected to the bottom of the dehydration barrel, a sealing plate is slidably connected in the sealing groove, a conical cylinder is fixedly connected to the sealing plate, the conical cylinder is arranged in the dehydration barrel, the filter pressing block is slidably connected with the outer wall of the conical cylinder, a filter membrane is fixedly connected in the conical cylinder, a liquid collecting hopper is fixedly connected to the bottom of the conical cylinder, and a drain pipe is fixedly connected to the liquid collecting hopper. The dehydration barrel is provided with a separation assembly at the bottom, which is used for separating the dehydrated mud blocks.

2. The sludge dewatering apparatus for domestic sewage treatment according to claim 1, characterized by A first hydraulic telescopic pump is fixedly connected to the mounting plate, and the output shaft of the first hydraulic telescopic pump is fixedly connected to the lifting cylinder.

3. The sludge dewatering apparatus for domestic sewage treatment according to claim 1, characterized by A second hydraulic telescopic pump is fixedly connected to the base, and the output shaft of the second hydraulic telescopic pump is fixedly connected with a lifting frame, and the lifting frame is fixedly connected with the sealing plate.

4. The sludge dewatering apparatus for domestic sewage treatment according to claim 1, characterized by The separation assembly comprises a plurality of circumferentially distributed cutting knives fixedly connected to the inner wall of the bottom of the dehydration barrel, and a ring cutting knife is fixedly connected to the end of the cutting knife away from the dehydration barrel, and the ring cutting knife is slidably connected with the outer wall of the conical cylinder.

5. The sludge dewatering apparatus for domestic sewage treatment according to claim 4, characterized by A collecting hopper is fixedly connected to the outer wall of the sealing plate, and the collecting hopper is arranged in an inclined manner, and a mud outlet is arranged at the low point of the collecting hopper.

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