Sludge dewatering and compressing device

Abstract

The utility model discloses a sludge dewatering and compressing device which comprises a dewatering box and a condensing box, and a dewatering box is arranged in the dewatering box. By adopting the stirring blade, the heat supply pipe and the dewatering box, during dewatering operation, sewage firstly enters the dewatering box and can be preliminarily discharged through the filtering holes in the surface of the dewatering box, then sludge can be extruded under extrusion of the pressing plate, water contained in the sludge is secondarily squeezed, the dewatering effect is improved, and the dewatering efficiency is improved. Then, the sludge subjected to extrusion dehydration falls to the bottom end of the box body, and sludge blocks can be crushed through continuously rotating stirring blades, so that the sludge blocks can be in more sufficient contact with heat transferred by a heat supply pipe, water in the sludge is further evaporated out, and the overall dehydration quality is improved; the device can effectively improve the overall dehydration quality and enrich the dehydration structures through multiple groups of dehydration structures, is convenient to use better, and has the advantages of good dehydration effect and multiple dehydration.

Description

Technical Field

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

[0002] The sludge produced by wastewater treatment has a high water content, so it is necessary to extract the water from the sludge first, and then filter, neutralize and purify the wastewater to obtain relatively clean water.

[0003] The existing publicly available technology, application number CN202120845500.0, describes a sludge compression device for sewage treatment. This device compresses dewatered sludge into blocks for easier stacking and handling. The chain conveyor operates continuously in a cycle, resulting in higher compression efficiency and improved efficiency of secondary sludge compression. Simultaneously, it compresses the sludge volume, reducing the volume required for handling and storage, thus facilitating transportation and storage.

[0004] However, the aforementioned patent still has certain drawbacks in its use: it uses a pressure plate and a compression tank to drain and compress the sludge, and then transports it by a conveyor belt. When the compression tank is overturned, the sludge blocks slide out of the compression tank by gravity. However, in actual use, because the sludge has a certain stickiness and expands and is compressed in the compression tank, the sludge blocks tend to stick to the compression tank and are not easy to slide off, or they do not slide off completely. This will affect the next step of the compression tank to compress the sludge again. At the same time, after the sludge is squeezed and dewatered, a lot of water will still remain in the sludge. If this is not treated, it will affect the overall dewatering quality and reduce the effectiveness of the device.

[0005] There are currently no effective solutions to the problems in the relevant technologies. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides a sludge dewatering and compression device, which has the advantages of good dewatering effect, multiple dewatering, and sludge removal, thereby solving the problems mentioned in the background technology.

[0007] To achieve the advantages of good dewatering effect, multiple dewatering, and sludge removal, the specific technical solution adopted by this utility model is as follows:

[0008] A sludge dewatering and compression device includes a dewatering tank and a condensation tank. A dewatering box is installed inside the dewatering tank. Several sets of filter holes are arranged around the center of the dewatering box. A drainage trough is formed on one side of each filter hole inside the dewatering box, and a water outlet pipe is installed at the bottom of the drainage trough. Fixing plates are symmetrically welded to the two inner surfaces of the dewatering box below the dewatering box. A limit rod is installed at the top of the fixing plate, and a support arm is slidably connected to the outer periphery of the limit rod. A second lifting rod is connected to the bottom of the support arm, and one end of the second lifting rod passes through one side of the fixing plate and connects to the second... The hydraulic cylinder is connected to the telescopic end. A sealing plate is fixedly installed at the top of the support arm. The sealing plate is located at the bottom of the dehydration box. A pressure plate is provided above the sealing plate at the top of the dehydration box. A first lifting rod is installed at the top of the pressure plate. One end of the first lifting rod passes through one side of the dehydration box and is connected to the telescopic end of the first hydraulic cylinder. A stirring shaft is installed below the dehydration box at the bottom of the dehydration box. Several sets of stirring blades are evenly installed around the surface of the stirring shaft. One end of the stirring shaft is rotatably connected to the heating pipe. The inside of the stirring shaft and the inside of the stirring blades are hollow structures.

[0009] Furthermore, condensation chambers are symmetrically arranged on both sides of the dehydration chamber. The condensation chambers are connected to the dehydration chambers through pipes. A condenser is installed inside the condensation chambers. An exhaust pipe and a drain pipe are respectively installed on the two ends of the condensation chambers.

[0010] Furthermore, one end of the stirring shaft passes through one side of the dehydration tank and is connected to the motor.

[0011] Furthermore, a water inlet pipe is installed at the top of one side surface of the dehydration box, and the water outlet of the water inlet pipe is located at the top of the dehydration box.

[0012] Furthermore, a hot air blower is installed on one side of the top of the dehydration tank, and the hot air blower is connected to the heating pipe.

[0013] Furthermore, cylinders are installed on one side of the pressure plate moving path and on one side of the sealing plate moving path, and a scraper is installed at one end of each cylinder.

[0014] Furthermore, the bottom of the drainage trough is inclined.

[0015] Furthermore, the dimensions of the pressure plate, sealing plate, and scraper are all smaller than the internal dimensions of the dehydration tank.

[0016] Compared with the prior art, the present invention provides a sludge dewatering and compression device, which has the following beneficial effects:

[0017] (1) This utility model adopts stirring blades, heating pipes, and dehydration boxes. During the dehydration operation, the sewage will first enter the dehydration box and be initially discharged through the filter holes on its surface. Then, the sludge can be squeezed under the pressure of the pressure plate, and the water contained in it will be squeezed again to improve the overall dehydration effect. Then, the sludge that has been squeezed and dehydrated will fall to the bottom of the box. The continuously rotating stirring blades can crush the sludge blocks, so that they can come into more contact with the heat transferred by the heating pipe, and the water in the sludge fragments will evaporate, thus improving the overall dehydration quality. The device can effectively improve the overall dehydration quality and enrich the dehydration structure through multiple dehydration structures, making it easier to use. It has good dehydration effect and multiple dehydration.

[0018] (2) This utility model adopts a scraper. After the extrusion is completed, the sludge after the extrusion and drainage can be driven downward by the upward movement of the pressure plate and the downward movement of the sealing plate. At this time, the scraper on the side of the upward movement path of the pressure plate and the side of the downward movement path of the sealing plate can scrape off the sludge remaining at the bottom of the pressure plate and the top of the sealing plate, so as to avoid the sludge residue affecting the subsequent dewatering operation, ensure the quality of use of the device and the dewatering effect, and has the advantage of sludge removal. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of a sludge dewatering and compression device proposed in this utility model;

[0021] Figure 2 This is a schematic diagram of the scraper structure of this utility model;

[0022] Figure 3 This is a structural schematic diagram of the sealing plate and support arm of this utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the stirring shaft and stirring blade of this utility model.

[0024] In the picture:

[0025] 1. Dehydration tank; 2. Hot air blower; 3. First hydraulic cylinder; 4. First lifting rod; 5. Pressure plate; 6. Dehydration box; 7. Water inlet pipe; 8. Filter hole; 9. Drainage trough; 10. Water outlet pipe; 11. Cylinder; 12. Fixing plate; 13. Condenser; 14. Exhaust pipe; 15. Condensation box; 16. Drainage pipe; 17. Motor; 18. Stirring shaft; 19. Stirring blade; 20. Scraper; 21. Heating pipe; 22. Second hydraulic cylinder; 23. Limiting rod; 24. Second lifting rod; 25. Support arm; 26. Sealing plate. Detailed Implementation

[0026] To further illustrate the various embodiments, the present invention provides accompanying drawings, which are part of the disclosure of the present invention. These drawings are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0027] According to an embodiment of the present invention, a sludge dewatering and compression device is provided.

[0028] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments, such as... Figure 1-4As shown, a sludge dewatering and compression device according to an embodiment of the present invention includes a dewatering tank 1 and a condensation tank 15. A dewatering box 6 is installed inside the dewatering tank 1. Several sets of filter holes 8 are arranged around the center of the dewatering box 6. A drainage trough 9 is provided on one side of the filter holes 8 inside the dewatering box 6. A water outlet pipe 10 is installed at the bottom of the drainage trough 9. Fixing plates 12 are symmetrically welded to the two inner surfaces of the dewatering tank 1 below the dewatering box 6. A limit rod 23 is installed at the top of the fixing plate 12. A support arm 25 is slidably connected to the outer periphery of the limit rod 23. A second lifting rod 24 is connected to the bottom of the support arm 25. One end of the second lifting rod 24 passes through the fixing plate 12 and is connected to the telescopic end of the second hydraulic cylinder 22. A sealing plate 26 is fixedly installed at the top of the support arm 25. The sealing plate 26 is located at the bottom of the dewatering box 6. At the end position, a pressure plate 5 is provided above the sealing plate 26 at the top of the dehydration tank 1. A first lifting rod 4 is installed at the top of the pressure plate 5. One end of the first lifting rod 4 passes through one side of the dehydration tank 1 and is connected to the telescopic end of the first hydraulic cylinder 3. A stirring shaft 18 is installed below the dehydration box 6 at the bottom of the dehydration tank 1. Several sets of stirring blades 19 are evenly installed around the surface of the stirring shaft 18. One end of the stirring shaft 18 is rotatably connected to the heating pipe 21. The interior of the stirring shaft 18 and the interior of the stirring blades 19 are hollow structures. Sealing gaskets are provided on the surfaces of the sealing plate 26 and the pressure plate 5 to improve the sealing performance when used with the dehydration box 6, reduce sewage leakage, and improve the overall performance. If a small amount of sewage leaks out, it can be evaporated and condensed in the subsequent stirring and evaporation process, without affecting the normal use of the structure.

[0029] In one embodiment, a condenser 15 is symmetrically arranged on both sides of the dehydration tank 1. The condenser 15 is connected to the dehydration tank 1 via a pipe. A condenser 13 is installed inside the condenser 15. An exhaust pipe 14 and a drain pipe 16 are respectively installed on the two ends of the condenser 15. The exhaust pipe 14 is set to discharge the gas, while the drain pipe 16 is set to discharge the condensed liquid. The condenser 13 is a common device with mature application technology, so it will not be described in detail.

[0030] In one embodiment, one end of the stirring shaft 18 passes through one side of the dehydration tank 1 and is connected to the motor 17, which is configured to drive the stirring shaft 18.

[0031] In one embodiment, an inlet pipe 7 is installed at the top of one side surface of the dewatering tank 1, and the outlet of the inlet pipe 7 is located at the top of the dewatering box 6. The inlet pipe 7 is designed to introduce muddy wastewater that needs to be dewatered for subsequent processing.

[0032] In one embodiment, a hot air blower 2 is installed on one side of the top of the dewatering tank 1. The hot air blower 2 is connected to the heating pipe 21. The hot air blower 2 and the heating pipe 21 are set up to facilitate the transfer of heat to the stirring shaft 18 and the stirring blades 19, thereby realizing the evaporation of water inside the sludge and improving the overall dewatering effect. The hot air blower 2 can be an industrial hot air blower 2. The specific model and structure selection can be adjusted according to the needs, which will not be elaborated on here.

[0033] In one embodiment, cylinders 11 are installed on one side of the moving path of the pressure plate 5 and on one side of the moving path of the sealing plate 26. A scraper 20 is installed at one end of the cylinder 11. The scraper 20 is designed to scrape off the sludge on the surface of the pressure plate 5 and the sealing plate 26, thereby cleaning the structure, preventing residual sludge from affecting the subsequent extrusion and dewatering operation, and improving the overall dewatering quality of the device.

[0034] In one embodiment, the bottom of the drainage trough 9 is inclined. The inclined structure is designed to ensure that sewage is discharged smoothly and to reduce residue.

[0035] In one embodiment, the dimensions of the pressure plate 5, the sealing plate 26, and the scraper 20 are all smaller than the internal dimensions of the dewatering tank 1. The dimensions are set to ensure that there is a certain gap between the above structures and the inner wall of the dewatering tank 1, so as to ensure that the scraper 20 can move smoothly and perform mud removal operation on the pressure plate 5 and the sealing plate 26, and ensure that the structure in the device can operate and be used normally.

[0036] Working Principle: In actual use, personnel can introduce muddy wastewater that needs to be dewatered through the inlet pipe 7. The wastewater will fall into the dewatering box 6. Since the dewatering box 6 has multiple sets of filter holes 8 around its perimeter, the wastewater can smoothly pass through the filter holes 8 into the drainage trough 9 and be discharged along the outlet pipe 10 at the bottom of the drainage trough 9, facilitating subsequent purification steps. The sludge remaining in the dewatering box 6 will be squeezed by the pressure plate 5 driven by the first hydraulic cylinder 3, thereby squeezing out the water contained inside. After the squeezing is completed, the upward movement of the pressure plate 5 and the downward movement of the sealing plate 26 can move the squeezed and drained sludge downward. At this time, the scraper 20 on the side of the upward movement path of the pressure plate 5 and the downward movement path of the sealing plate 26 can scrape off the sludge remaining at the bottom of the pressure plate 5 and the top of the sealing plate 26, preventing the sludge residue from affecting the subsequent dewatering operation. The discharged sludge can fall smoothly into the bottom of the dewatering tank 1. At this time, the sludge lumps can be broken up by the continuous stirring of the stirring blades 19, thereby increasing the contact area with heat and making it easier to evaporate the water in the sludge. Since the stirring blades 19 and the stirring shaft 18 are hollow structures and are rotatably connected to the heating pipe 21, the heat generated by the hot air blower 2 can be introduced into them during operation, thereby heating the surrounding sludge and making the water in the sludge evaporate more fully, improving the overall dewatering effect. Moreover, the evaporated water vapor will enter the condensation tank 15 through the pipe, be re-liquefied by the internal condenser 13, and finally be discharged from the drain pipe 16. The device can effectively improve the overall dewatering quality through multiple dewatering structures, making it easier to use. The device as a whole has the advantages of good dewatering effect, multiple dewatering, and sludge removal.

[0037] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0038] 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 and compression device, comprising a dewatering tank (1) and a condensation tank (15), characterized in that, A dehydration box (6) is installed inside the dehydration tank (1). Several sets of filter holes (8) are arranged around the center of the dehydration box (6). A drainage groove (9) is provided on one side of the filter hole (8) inside the dehydration box (6). A water outlet pipe (10) is installed at the bottom of the drainage groove (9). Fixing plates (12) are symmetrically welded to the two sides of the dehydration box (1) below the dehydration box (6). A limit rod (23) is installed at the top of the fixing plate (12). A support arm (25) is slidably connected to the outer periphery of the limit rod (23). A second lifting rod (24) is connected to the bottom of the support arm (25). One end of the second lifting rod (24) passes through one side of the fixing plate (12) and is connected to the telescopic end of the second hydraulic cylinder (22). A sealing plate (26) is fixedly installed at the top of the support arm (25). The sealing plate (26) is located at the bottom of the dehydration box (6). A pressure plate (5) is provided above the sealing plate (26) at the top of the dehydration box (1). A first lifting rod (4) is installed at the top of the pressure plate (5). One end of the first lifting rod (4) passes through one side of the dehydration box (1) and is connected to the telescopic end of the first hydraulic cylinder (3). A stirring shaft (18) is installed below the dehydration box (6) at the bottom of the dehydration box (1). Several sets of stirring blades (19) are evenly installed around the surface of the stirring shaft (18). One end of the stirring shaft (18) is rotatably connected to the heating pipe (21). The inside of the stirring shaft (18) and the inside of the stirring blades (19) are both hollow structures.

2. The sludge dewatering and compression device according to claim 1, characterized in that, The dehydration tank (1) has condensation tanks (15) symmetrically arranged on both sides of the surface. The condensation tanks (15) are connected to the dehydration tank (1) through pipes. A condenser (13) is installed inside the condensation tank (15). An exhaust pipe (14) and a drain pipe (16) are respectively installed on the two ends of the condensation tank (15).

3. The sludge dewatering and compression device according to claim 1, characterized in that, One end of the stirring shaft (18) passes through one side of the dehydration tank (1) and is connected to the motor (17).

4. The sludge dewatering and compression device according to claim 1, characterized in that, A water inlet pipe (7) is installed at the top of one side surface of the dehydration box (1), and the water outlet of the water inlet pipe (7) is located at the top of the dehydration box (6).

5. The sludge dewatering and compression device according to claim 1, characterized in that, A hot air blower (2) is installed on one side of the top of the dehydration tank (1), and the hot air blower (2) is connected to the heating pipe (21).

6. The sludge dewatering and compression device according to claim 1, characterized in that, A cylinder (11) is installed on one side of the moving path of the pressure plate (5) and on one side of the moving path of the sealing plate (26), and a scraper (20) is installed on one end of the cylinder (11).

7. The sludge dewatering and compression device according to claim 1, characterized in that, The bottom of the drainage trough (9) is inclined.

8. The sludge dewatering and compression device according to claim 1, characterized in that, The dimensions of the pressure plate (5), sealing plate (26) and scraper (20) are all smaller than the internal dimensions of the dehydration tank (1).

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