Chemical sludge retreatment system

Abstract

The utility model discloses a chemical sludge retreatment system, which belongs to the field of sludge treatment and comprises a tank body, a feed port and an exhaust pipe are arranged on the upper portion of the tank body, a discharge port is arranged on the lower portion of the tank body, and a stirring mechanism and a heating device are arranged in the tank body. The stirring mechanism comprises a vertically-arranged stirring part, the stirring part comprises a stirring area and a scattering area from top to bottom, the outer diameter of the scattering area is larger than that of the stirring area, the lower end of the stirring part is rotationally connected with a partition plate, and a discharging opening capable of being opened and closed is formed in the position, on the outer side of the stirring part, of the partition plate; stirring blades are arranged on the side wall of the stirring area, a scattering assembly is arranged on the side wall of the scattering area, and a scattering part in the scattering assembly moves in the radial direction of a stirring part. The utility model aims to provide a chemical sludge retreatment system which can effectively reduce the water content of sludge and ensure that the sludge is not hardened.

Description

Technical Field

[0001] This utility model relates to the field of sludge treatment, specifically a chemical sludge reprocessing system. Background Technology

[0002] Chemical sludge is a solid sediment generated during wastewater treatment in chemical plants. When chemical sludge is treated harmlessly using incineration technology, drying is necessary to reduce incineration time and improve energy utilization. Drying first involves pressing and dewatering using a filter press to initially reduce its moisture content. After pressing and dewatering, further thermal drying is required to further reduce the moisture content and meet incineration requirements. Furthermore, if the dried sludge is caked during incineration, incomplete combustion may occur, affecting the incineration efficiency. Utility Model Content

[0003] The purpose of this invention is to address the above problems by providing a chemical sludge reprocessing system that can effectively reduce the moisture content of the sludge while ensuring that the sludge does not caking.

[0004] To achieve the above objectives, the technical solution adopted in this application is: a chemical sludge reprocessing system, including a tank. The upper part of the tank is provided with a feeding port and an exhaust pipe, and the lower part of the tank is provided with a discharge port. A stirring mechanism and a heating device are installed inside the tank. The stirring mechanism includes a vertically arranged stirring section, which comprises a stirring zone and a dispersing zone from top to bottom. The outer diameter of the dispersing zone is larger than the outer diameter of the stirring zone. The lower end of the stirring section is rotatably connected to a partition plate, and the partition plate has an openable and closable discharge port on the outside of the stirring section. Stirring blades are provided on the side wall of the stirring zone, and a dispersing assembly is provided on the side wall of the dispersing zone. The dispersing section in the dispersing assembly moves radially along the stirring section. The chemical sludge, after preliminary pressing and dewatering, is fed into the tank through the feeding port. The heating device operates to heat the sludge inside the tank, causing the water in the sludge to convert into water vapor and be discharged through the exhaust pipe. During the heating process, the stirring section rotates under the drive of a motor or the like, stirring the sludge inside the tank to ensure uniform heating and thus improve drying efficiency. At the same time, when the sludge enters between the tank and the dispersing zone, the dispersing section breaks up the sludge so that the dried sludge meets the requirements for incineration.

[0005] Furthermore, the inner wall of the tank is provided with a dispersing ring adapted to the dispersing zone. The inner wall of the dispersing ring is provided with wavy or other textures to make the sludge roll between the tank and the dispersing zone, so that the sludge is subjected to uniform force and the shearing effect is enhanced, thereby improving the dispersing efficiency and effect.

[0006] Furthermore, the dispersing assembly includes a dispersing section, a transmission section, and a resetting mechanism. The dispersing section is transversely interposed on the stirring section, with one end extending into the stirring section and connecting to the transmission section. A support section is provided on the partition plate, and a pushing section is provided on the support section for pushing the transmission section to move outward from the stirring section. The resetting mechanism is located between the inner wall of the stirring section and the transmission section. When the dispersing assembly rotates with the stirring section to the position of the pushing section, the pushing section drives the transmission section and the dispersing section to move outward from the tank. During this movement, the pushing section can stir and loosen the sludge, preventing excessive accumulation of sludge in local areas and avoiding blockage of the space between the tank and the dispersing area.

[0007] Furthermore, a reset inspection section is provided at the upper end of the partition plate. The reset inspection section is arc-shaped, with one end of the reset inspection section away from the support extending inward toward the inside of the partition plate. The upper end surface of the reset inspection section is higher than the lower end surface of the transmission section. When the disassembly assembly moves to the reset inspection section, the inner wall of the reset inspection section contacts the lower part of the outer wall of the transmission section, thereby driving the transmission section to move inward toward the inside of the tank to ensure that the disassembly section can retract and reset.

[0008] Furthermore, an elastic telescopic rod is connected between the inner wall of the stirring part and the transmission part to assist the dispersing part in resetting and to serve as a guide.

[0009] The beneficial effects of this invention are as follows: After preliminary pressing and dehydration, the chemical sludge is fed into the tank through the feeding port. The heating device operates to heat the sludge inside the tank, causing the water in the sludge to turn into water vapor and be discharged through the exhaust pipe. This effectively reduces the moisture content of the chemical sludge, making it suitable for incineration. Simultaneously, when the sludge enters between the tank and the dispersing zone, the dispersing section breaks up any clumps of sludge, ensuring it meets incineration requirements. Attached Figure Description

[0010] Figure 1 This is a side view of the structure of this utility model.

[0011] Figure 2 This is a top-down structural diagram of the disintegration zone.

[0012] The text labels in the diagram represent: 1. Tank body; 101. Discharge port; 102. Heating device; 2. Feed port; 3. Exhaust pipe; 4. Stirring section; 5. Stirring zone; 6. Dispersion zone; 7. Baffle plate; 8. Discharge port; 9. Stirring blades; 10. Dispersion section; 11. Dispersion ring; 12. Transmission section; 13. Reset mechanism; 14. Support section; 15. Pushing section; 16. Reset inspection section; 17. Elastic telescopic rod; 18. Protective shell; 19. Pushing section. Detailed Implementation

[0013] To enable those skilled in the art to better understand the technical solution of this application, the application will be described in detail below with reference to the accompanying drawings. The description in this section is only exemplary and explanatory, and should not be used to limit the scope of protection of this application.

[0014] Example 1, as Figures 1-2 As shown, the specific structure of this embodiment is a chemical sludge reprocessing system, including a tank 1. The upper part of the tank 1 is provided with a feed port 2 and an exhaust pipe 3, and the lower part of the tank 1 is provided with a discharge port 101. A stirring mechanism and a heating device 102 are installed inside the tank 1. The heating device 102 can employ existing technologies such as electric heating or steam heating. In this embodiment, a pipe runs around the side wall of the tank, and an electric heating element can be installed inside the pipe, operating via an external power source; alternatively, the pipe can be connected to a steam generator to allow steam to enter the pipe and heat the sludge inside the tank. A protective shell 18 is provided around the outside of the tank 1 at the heating device 102.

[0015] The stirring mechanism includes a stirring section 4, which is coaxially arranged with the tank body 1. To reduce the weight of the stirring section 4, it is a hollow shell structure with an open lower end. The stirring section 4 includes a stirring zone 5 and a dispersing zone 6 arranged coaxially from top to bottom. The connection between the stirring zone 5 and the dispersing zone 6 is made by a rounded transition to reduce resistance and wear, allowing the sludge to flow smoothly between the two zones. The outer diameter of the dispersing zone 6 is larger than the outer diameter of the stirring zone 5. The lower end of the stirring section 4 is rotatably connected to a partition plate 7 via bearings, etc., and the upper end of the stirring section 4 is driven by a gear, etc., to the output shaft of a motor. The outer wall of the partition plate 7 is fixedly installed on the inner wall of the tank body 1. A discharge port 8 is provided on the partition plate 7 outside the stirring section 4. There are multiple discharge ports 8, which are arranged in a circular array around the axis of the tank body to accelerate the discharge speed. The discharge ports 8 are equipped with gates, valves, and other opening and closing mechanisms. The gates are driven by cylinders, etc., to realize the automatic opening and closing of the discharge ports 8. The stirring zone 5 is provided with stirring blades 9 on its side wall. The stirring blades 9 stir the sludge in the tank 1 so that the sludge is heated as evenly as possible. The inner side wall of the tank 1 is provided with a dispersing ring 11 that is compatible with the dispersing zone 6. The dispersing ring 11 can be made of hard alloy materials such as tungsten and cobalt.

[0016] A dispersing assembly is provided on the side wall of the dispersing zone 6. Multiple dispersing assemblies can be provided and arranged in a circular array around the tank axis. The dispersing assembly includes a dispersing part 10, a transmission part 12, and a reset mechanism 13. The dispersing part 10 is transversely inserted into the stirring part 4. For this purpose, the side wall of the dispersing zone 6 of the stirring part 4 is provided with a through hole that matches the outer diameter of the dispersing part 10. One end of the dispersing part 10 extends out of the stirring part 4 from the outside of the tank 1, and the other end of the dispersing part 10 extends into the stirring part. The mixing section 4 is connected to the transmission section 12. Multiple mixing sections can be provided on one mixing assembly to improve the mixing and dispersing effect. All mixing sections on one mixing assembly are fixedly connected to one transmission section 12. The partition plate 7 is provided with a support section 14. The support section 14 is provided with a pushing section 15 for pushing the transmission section 12 to move outward to the mixing section 4. One end of the transmission section 12 on the inner side of the tank 1 is set as an arc surface. The contact surface between the pushing section 15 and the transmission section 12 is also set as an arc. Under normal conditions, the lateral distance between the pushing section 15 and the mixing section 4 is smaller than the lateral distance between the transmission section 12 and the mixing section 4. Thus, when the transmission section 12 rotates with the mixing section 4 to the pushing section 15, the pushing section 15 will push the transmission section 12 together with the mixing section 10 to move outward to the tank 1. The reset mechanism 13 is provided between the inner wall of the mixing section 4 and the transmission section 12. The reset mechanism 13 may be a spring, which is sleeved on the dispersing part 10. An elastic telescopic rod 17 is also connected between the inner wall of the stirring part 4 and the transmission part 12.

[0017] A reset inspection section 16 is provided at the upper end of the partition 7. The reset inspection section 16 is arc-shaped and located on one side of the center of the tank body 1. The end of the reset inspection section 16 away from the support section 14 extends inward towards the partition 7. The upper surface of the reset inspection section 16 is higher than the lower surface of the transmission section 12. The radial distance from the end of the reset inspection section 16 near the support section 14 to the tank body 1 is less than the minimum radial distance between the transmission section 12 and the tank body 1; the radial distance from the end of the reset inspection section 16 away from the support section 14 to the tank body 1 is less than the maximum radial distance between the transmission section 12 and the tank body 1.

[0018] The specific reprocessing process is as follows: Chemical sludge is fed into tank 1 through feed port 2. Heating device 102 is activated to heat the sludge in tank 1. During the heating process, the moisture in the sludge is converted into water vapor, which is discharged from tank 1 through exhaust pipe 3, thus achieving the drying treatment of the sludge. During drying, feed port 8 is in the closed state.

[0019] During the drying process, the motor drives the stirring section 4 to rotate. The stirring blades 9 on the stirring section 4 agitate the sludge in the tank 1, ensuring uniform heating of the sludge and improving drying efficiency. As the stirring section 4 rotates, the sludge moves towards the dispersing zone 6 under the action of gravity and the stirring blades 9. After entering the dispersing zone 6, the sludge is compacted due to the reduced distance between the dispersing zone 6 and the side wall of the tank 1. Simultaneously, the dispersing section 10 rotates with the stirring section 4 to further disperse the sludge.

[0020] When the transmission unit 12 rotates with the stirring unit 4 to the pushing unit 15, the arc-shaped surface of the pushing unit 15 contacts the arc-shaped surface of the transmission unit 12, causing the transmission unit 12, together with the dispersing unit 10, to move outward from the tank body 1. After the transmission unit 12 leaves the pushing unit 15, the reset mechanism 13 and the elastic telescopic rod 17 work together to return the transmission unit 12 and the dispersing unit 10 to their initial positions. When the transmission unit 12 rotates to the reset inspection unit 16, the inner side of the reset inspection unit 16 abuts against the outer wall of the transmission unit 12 to push the transmission unit 12 to move inward from the tank body 1, ensuring that the dispersing unit 10 can move inward from the tank body 1. After drying, the discharge port 8 opens, and the dried sludge moves to the lower part of the tank body 1 and is finally discharged from the discharge port 101. A pushing unit 19 is provided at the lower end of the dispersing zone 6, which pushes the sludge to move towards the discharge port 8.

[0021] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0022] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The above examples are only for the purpose of helping to understand the method and core ideas of this utility model. The above description is only a preferred embodiment of this utility model. It should be noted that due to the limitations of textual expression, there are objectively infinite specific structures. For those skilled in the art, several improvements, modifications, or changes can be made without departing from the principles of this utility model, and the above technical features can also be combined in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the concept and technical solution of the utility model to other occasions without modification, should all be considered within the protection scope of this utility model.

Claims

1. A chemical sludge reprocessing system, comprising a tank (1), wherein a feed inlet (2) and an exhaust pipe (3) are provided at the upper part of the tank (1), and a discharge outlet (101) is provided at the lower part of the tank (1), wherein a stirring mechanism and a heating device (102) are provided inside the tank (1), characterized in that, The stirring mechanism includes a vertically arranged stirring part (4), which includes a stirring zone (5) and a dispersing zone (6) from top to bottom. The outer diameter of the dispersing zone (6) is larger than that of the stirring zone (5). The lower end of the stirring part (4) is rotatably connected to a partition plate (7). An openable discharge port (8) is provided on the partition plate (7) on the outside of the stirring part (4). A stirring blade (9) is provided on the side wall of the stirring zone (5), and a dispersing assembly is provided on the side wall of the dispersing zone (6). The dispersing part (10) in the dispersing assembly moves radially along the stirring part (4).

2. The chemical sludge reprocessing system according to claim 1, characterized in that, The inner wall of the tank (1) is provided with a dispersing ring (11) that is compatible with the dispersing zone (6).

3. The chemical sludge reprocessing system according to claim 2, characterized in that, The dispersing assembly includes a dispersing part (10), a transmission part (12), and a reset mechanism (13). The dispersing part (10) is transversely interposed on the stirring part (4), and one end of the dispersing part (10) extends into the stirring part (4) and is connected to the transmission part (12). A support part (14) is provided on the partition plate (7), and a pushing part (15) is provided on the support part (14) for pushing the transmission part (12) to move outward of the stirring part (4). The reset mechanism (13) is located between the inner wall of the stirring part (4) and the transmission part (12).

4. The chemical sludge reprocessing system according to claim 3, characterized in that, The upper end of the partition (7) is provided with a reset inspection part (16), which is arc-shaped. The end of the reset inspection part (16) away from the support part (14) extends into the partition (7), and the upper end surface of the reset inspection part (16) is higher than the lower end surface of the transmission part (12).

5. A chemical sludge reprocessing system according to claim 3, characterized in that, An elastic telescopic rod (17) is also connected between the inner wall of the stirring part (4) and the transmission part (12).

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