A device for treating sludge from product processing

Abstract

This invention relates to the field of sludge treatment technology, and in particular to a treatment device for sludge used in product processing, comprising a dewatering tank: a roller is rotatably mounted on the upper inner side of the dewatering tank, and sludge is filled inside the roller; the outside of the roller has several mesh openings; both ends of the roller are connected to drive shafts; a stepper motor is mounted outside the dewatering tank; two circular tubes are symmetrically mounted on the bottom of the dewatering tank; an oxidation tube is slidably mounted between the two circular tubes, and the oxidation tube is filled with an oxidizing substance for oxidizing harmful substances in the wastewater. This invention separately oxidizes the separated wastewater, but in this process, the oxidant preferentially attacks phenolic hydroxyl groups, causing the overall degradation rate to decrease by 40-60% after the degradation of sulfides. Therefore, this equipment first treats the sulfides with sulfate, and then oxidizes the antioxidant with an oxidant to improve the overall degradation rate.

Description

Technical Field

[0001] This invention relates to the field of sludge treatment technology, and more particularly to a device for treating sludge used in product processing. Background Technology

[0002] Sludge is not directly generated during the rubber production process, but it is generated during the spraying process in the spray tower. The wastewater and impurities in the sludge need to be dewatered and the water and impurities need to be treated separately. The dewatered impurities need to be incinerated, and the dewatered water needs to be oxidized.

[0003] There is a patent application with publication number CN102503058B entitled "A Complete Set of Sludge Treatment Equipment," which includes a sludge metering and feeding device, a mixing and modification device, a metering and feeding device, a heating, sterilization, and deodorization device, a transfer tank, a metering pumping device I, a dewatering device I, a liquid tank, a dewatering device II, a metering water supply device, a reagent A metering and dispensing device, a reagent B metering and dispensing device, a reagent C metering and dispensing device, a metering pumping device II, and a waste gas collection and treatment device. Using this complete set of sludge treatment equipment results in a short treatment time; the treatment process is environmentally friendly with no secondary pollution; the treatment process has low energy consumption and low cost; and the obtained dry sludge and heavy metal slag can be comprehensively utilized.

[0004] In the aforementioned existing technologies, the dry sludge and heavy metal slag obtained by using complete sludge treatment equipment can be comprehensively utilized. However, in the actual rubber production process, the separated wastewater contains a large number of harmful substances, such as vulcanization accelerators and antioxidants, which need to be treated separately. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a device for treating sludge used in product processing.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] Design a device for treating sludge from product processing, including a dewatering tank:

[0008] A roller is rotatably mounted on the upper inner side of the dewatering tank, and sludge is filled inside the roller. Several mesh holes are provided on the outside of the roller. Both ends of the roller are connected to drive shafts. The stepper motor is installed outside the dewatering tank, and one of the drive shafts is connected to the output shaft of the stepper motor.

[0009] Two circular tubes are symmetrically installed at the bottom of the dewatering tank. An oxidation tube is slidably arranged between the two circular tubes and is filled with an oxidizing substance for oxidizing harmful substances in the wastewater.

[0010] Preferably, each of the round tubes is equipped with an air inflator, which extends to the outside of the dehydration tank and is connected to an air pump at its end.

[0011] Preferably, a partition is installed in the middle of the inner side of the oxidation tube, which divides the inside of the oxidation tube into two independent spaces. A feeding pipe is provided on the upper part of the oxidation tube on both sides of the partition, and a valve is provided on the feeding pipe. A first leakage hole and a second leakage hole are respectively opened on the lower part of the oxidation tube on both sides of the partition.

[0012] Preferably, when the first leakage hole is located inside the oxidation tube, the second leakage hole is located outside the oxidation tube; when the first leakage hole is located outside the oxidation tube, the second leakage hole is located inside the oxidation tube.

[0013] Preferably, a valve plate is slidably disposed on the inner side of the oxidation tube near both ends. One side of the valve plate is connected to the end position of the oxidation tube via a guide rod, and the outer wall of the oxidation tube is in contact with the inner wall of the circular tube.

[0014] Preferably, one end of the drive shaft is provided with a drive component, and the drive components are symmetrically arranged on both sides inside the dehydration tank.

[0015] Preferably, the transmission component includes two transmission teeth, a chain is sleeved on the outside of the two transmission teeth, blades are provided on the links of the chain, a rotating shaft is installed at one end of the transmission teeth, and one end of the rotating shaft is rotatably disposed inside the dehydration tank.

[0016] Preferably, the two lower transmission teeth are connected by a round shaft, and a gap is provided between the round shaft and the lower oxide tube.

[0017] Preferably, two connecting plates are symmetrically arranged on the side wall of the dehydration tank below the roller. Both connecting plates are inclined downwards, and several slots are provided on the inclined surface of the upper part of the connecting plates.

[0018] Preferably, a water outlet pipe is installed at the bottom of the dehydration tank, and a valve assembly for controlling its opening and closing is provided on the water outlet pipe.

[0019] The present invention proposes a treatment device for sludge in product processing, which has the following advantages: The treatment device for sludge in product processing performs separate oxidation treatment on the wastewater obtained after separation. However, in this process, the oxidant will preferentially attack the phenolic hydroxyl groups, resulting in a 40-60% decrease in the overall degradation rate after the degradation of sulfides. Therefore, this equipment first treats the sulfides with sulfate, and then uses an oxidant to oxidize the antioxidant, thereby improving the overall degradation rate. Attached Figure Description

[0020] Figure 1This is a schematic diagram of the structure of a sludge treatment device for product processing proposed in this invention.

[0021] Figure 2 This is a schematic diagram of the structure of a sludge treatment device for product processing proposed in this invention from another perspective.

[0022] Figure 3 This is a schematic diagram of the transmission component of a sludge treatment device for product processing proposed in this invention.

[0023] Figure 4 This is a schematic diagram of the connecting plate of a sludge treatment device for product processing proposed in this invention.

[0024] Figure 5 This is a schematic diagram of the internal structure of the oxidation tube in a sludge treatment device for product processing proposed in this invention.

[0025] Figure 6 for Figure 5 A front view of the structure of a sludge treatment device for product processing.

[0026] In the diagram: 1. Dehydration tank; 2. Drum; 3. Drive shaft; 4. Slot; 5. Connecting plate; 6. Blade; 7. Round tube; 8. Oxidation tube; 9. Air filling tube; 10. Chain; 11. Rotating shaft; 12. Round shaft; 13. Drive gear; 14. Stepper motor; 15. Water outlet pipe; 16. Valve plate; 17. First leakage hole; 18. Partition plate; 19. Second leakage hole; 20. Feeding pipe; 21. Guide rod. Detailed Implementation

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0028] Reference Figure 1-2 A sludge treatment device for product processing includes a dewatering tank 1. A roller 2 is rotatably mounted on the upper inner side of the dewatering tank 1, and the sludge is filled inside the roller 2. Several mesh holes are provided on the outside of the roller 2. Both ends of the roller 2 are connected to drive shafts 3. A stepper motor 14 is installed outside the dewatering tank 1. One of the drive shafts 3 is connected to the output shaft of the stepper motor 14. A water outlet pipe 15 is installed at the bottom of the dewatering tank 1. A valve assembly for controlling its opening and closing is provided on the water outlet pipe 15.

[0029] Reference Figure 5-6Two circular tubes 7 are symmetrically installed at the bottom of the dewatering tank 1. An oxidation tube 8 is slidably arranged between the two circular tubes 7 and is filled with an oxidizing substance for oxidizing harmful substances in the wastewater. An air inlet tube 9 is installed at the end of each circular tube 7 and extends to the outside of the dewatering tank 1. The end of the air inlet tube 9 is connected to an air pump. A partition 18 is installed in the middle of the inner side of the oxidation tube 8, which divides the inside of the oxidation tube 8 into two independent spaces. A feed pipe 20 is provided on the upper part of the oxidation tube 8 on both sides of the partition 18, and a valve is provided on the feed pipe 20. A first leakage hole 17 and a second leakage hole 19 are respectively opened on the lower part of the oxidation tube 8 on both sides of the partition 18. When the first leakage hole 17 is located inside the oxidation tube 8, the second leakage hole 19 is located outside the oxidation tube 8. When the first leakage hole 17 is located outside the oxidation tube 8, the second leakage hole 19 is located inside the oxidation tube 8.

[0030] A valve plate 16 is slidably disposed on the inner side of the oxidation tube 8 near both ends. One side of the valve plate 16 is connected to the end position of the oxidation tube 8 through a guide rod 21, and the outer wall of the oxidation tube 8 is in contact with the inner wall of the round tube 7.

[0031] The outside of the roller 2 has several holes. The roller 2 is driven by the stepper motor 14 to rotate. At the same time, the roller 2 is equipped with a pipe for feeding. In addition, a door is provided on one side of the dewatering tank 1. After the door is closed, the inside of the dewatering tank 1 forms a sealed space. When the roller 2 rotates at low speed, it can remove the water contained in the sludge, and the small particles of impurities fall down with the sewage.

[0032] An air inlet pipe 9 is provided at both ends of the circular tube 7. Air is inflated into the air inlet pipe 9 on both sides. This allows the oxidation tube 8 to move horizontally between the two circular tubes 7. After the experiment, it was found that there are two harmful substances in the wastewater generated by rubber production, namely antioxidants and vulcanization accelerators. When the oxidant and iron salt solution are added to the wastewater at the same time, the oxidant will preferentially attack the phenolic hydroxyl groups, resulting in a significant decrease in the degradation rate of sulfides.

[0033] Therefore, a partition 18 is installed in the middle of the inner side of the oxidation tube 8, dividing the interior of the oxidation tube 8 into two independent spaces. The two spaces are filled with oxidant and iron salt solution, respectively. Initially, the iron salt solution is released and enters the dehydration tank 1 through the second leakage hole 19. At this time, the first leakage hole 17 is located inside the circular tube 7 on one side, and the oxidant cannot be introduced into the dehydration tank 1 through the first leakage hole 17. After the reaction has been going on for a period of time, the position of the oxidation tube 8 is moved so that the second leakage hole 19 enters the circular tube 7 on the other side, while the first leakage hole 17 is removed from the original circular tube 7, and the oxidant inside it is introduced into the dehydration tank 1 through the first leakage hole 17 to start the second stage of oxidant treatment of antioxidant. The oxidation tube 8 is located below the liquid surface of the sewage, so that the chemical oxidant introduced in different stages can quickly diffuse in the sewage.

[0034] refer to Figure 3 One end of the drive shaft 3 is provided with a drive component, and the drive components are symmetrically arranged on both sides of the inside of the dehydration tank 1. The drive component includes two drive teeth 13. A chain 10 is sleeved on the outside of the two drive teeth 13. A blade 6 is provided on the chain link on the chain 10. A rotating shaft 11 is installed on one end of the drive teeth 13, and one end of the rotating shaft 11 is rotatably arranged inside the dehydration tank 1. The two drive teeth 13 below are connected by a round shaft 12. A gap is provided between the round shaft 12 and the oxidation tube 8 below.

[0035] Since the area between the two connecting plates 5 is where sewage falls, some uncollected sludge will accumulate directly below the two connecting plates 5. After this sludge accumulates, the chemicals will not be able to fully contact the sludge and sewage.

[0036] Therefore, the transmission teeth 13 on one side of the roller 2 can drive the chain 10 to move. The chain links of the chain 10 are equipped with blades 6. During the rotation of the blades 6, the sludge below can be transferred to a distance, so that the sludge is in a suspended state in the sewage. This can not only effectively solve the problem of sludge accumulating below the dewatering tank 1 and hindering the activity of the oxidation tube 8, but also effectively improve the reaction rate.

[0037] Reference Figure 4 Two connecting plates 5 are symmetrically arranged on the side wall of the dewatering tank 1 below the roller 2. Both connecting plates 5 are inclined downwards. Several slots 4 are provided on the inclined surface of the upper part of the connecting plates 5. During the rotation of the roller 2, small particles of sludge will be thrown onto the connecting plates 5 below. The small particles of sludge and sewage slide down the connecting plates 5 to the bottom of the dewatering tank 1. During this process, the sludge will enter the slots 4 provided on the upper part of the connecting plates 5 and collect some of the small particles of sludge.

[0038] The working principle of this device is as follows:

[0039] The outside of the roller 2 has several holes. The roller 2 is driven by the stepper motor 14 to rotate. At the same time, the roller 2 is equipped with a pipe for feeding. In addition, a door is provided on one side of the dewatering tank 1. After the door is closed, the inside of the dewatering tank 1 forms a sealed space. When the roller 2 rotates at low speed, it can remove the water contained in the sludge, and the small particles of impurities fall down with the sewage.

[0040] During the rotation of the drum 2, small sludge particles are thrown onto the connecting plate 5 below. The small sludge particles and sewage slide down the connecting plate 5 to the bottom of the dewatering tank 1. During this process, the upper part of the connecting plate 5 is provided with slots 4, and the sludge enters into the slots 4. The slots 4 collect some of the small sludge particles.

[0041] An air inlet pipe 9 is provided at both ends of the circular tube 7. Air is inflated into the air inlet pipe 9 on both sides. This allows the oxidation tube 8 to move horizontally between the two circular tubes 7. After the experiment, it was found that there are two harmful substances in the wastewater generated by rubber production, namely antioxidants and vulcanization accelerators. When the oxidant and iron salt solution are added to the wastewater at the same time, the oxidant will preferentially attack the phenolic hydroxyl groups, resulting in a significant decrease in the degradation rate of sulfides.

[0042] Therefore, a partition 18 is installed in the middle of the inner side of the oxidation tube 8, dividing the interior of the oxidation tube 8 into two independent spaces. The two spaces are filled with oxidant and iron salt solution, respectively. Initially, the iron salt solution is released and enters the dehydration tank 1 through the second leakage hole 19. At this time, the first leakage hole 17 is located inside the circular tube 7 on one side, and the oxidant cannot be introduced into the dehydration tank 1 through the first leakage hole 17. After the reaction has been going on for a period of time, the position of the oxidation tube 8 is moved so that the second leakage hole 19 enters the circular tube 7 on the other side, while the first leakage hole 17 is removed from the original circular tube 7, and the oxidant inside it is introduced into the dehydration tank 1 through the first leakage hole 17 to start the second stage of oxidant treatment of antioxidant. The oxidation tube 8 is located below the liquid surface of the sewage, so that the chemical oxidant introduced in different stages can quickly diffuse in the sewage.

[0043] Since the area between the two connecting plates 5 is where sewage falls, some uncollected sludge will accumulate directly below the two connecting plates 5. After this sludge accumulates, the chemicals will not be able to fully contact the sludge and sewage.

[0044] Therefore, the transmission teeth 13 on one side of the roller 2 can drive the chain 10 to move. The chain links of the chain 10 are equipped with blades 6. During the rotation of the blades 6, the sludge below can be transferred to a distance, so that the sludge is in a suspended state in the sewage. This can not only effectively solve the problem of sludge accumulating below the dewatering tank 1 and hindering the activity of the oxidation tube 8, but also effectively improve the reaction rate.

[0045] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A device for treating sludge generated during rubber production, comprising a dewatering tank (1), characterized in that: A roller (2) is rotatably installed on the upper inner side of the dewatering tank (1), and sludge is filled in the roller (2). Several mesh holes are provided on the outside of the roller (2). Both ends of the roller (2) are connected to a drive shaft (3). A stepper motor (14) is installed outside the dewatering tank (1), and one of the drive shafts (3) is connected to the output shaft of the stepper motor (14). Two round tubes (7) are symmetrically installed at the bottom of the dehydration tank (1), and an oxidation tube (8) is slidably arranged between the two round tubes (7). An air-filling pipe (9) is installed at the end of each of the round tubes (7). The air-filling pipe (9) extends to the outside of the dehydration tank (1), and the end of the air-filling pipe (9) is connected to the air pump. The air-filling pipes (9) on both sides are inflated, so that the oxidation tube (8) moves horizontally between the two round tubes (7). A partition (18) is installed in the middle of the inner side of the oxidation tube (8), dividing the interior of the oxidation tube (8) into two independent spaces. A feeding pipe (20) is provided on the upper part of the oxidation tube (8) on both sides of the partition (18), and a valve is provided on the feeding pipe (20). A first leakage hole (17) and a second leakage hole (19) are respectively opened on the lower part of the oxidation tube (8) on both sides of the partition (18). Oxidizing agent and iron salt solution are respectively filled in the two spaces. Initially, the iron salt solution is released to treat the sulfidation accelerator in the wastewater. The solution enters the dehydration tank (1) through the second leakage hole (19). At this time, the first leakage hole (17) is located inside the round tube (7) on one side, and the oxidant cannot be passed into the dehydration tank (1) through the first leakage hole (17). After the reaction has been going on for a period of time, the position of the oxidation tube (8) is moved so that the second leakage hole (19) enters the round tube (7) on the other side, while the first leakage hole (17) is removed from the original round tube (7) and the oxidant inside it is passed into the dehydration tank (1) through the first leakage hole (17), and the second stage of the oxidant treatment of the antioxidant begins. A valve plate (16) is slidably disposed on the inner side of the oxidation tube (8) near both ends. One side of the valve plate (16) is connected to the end position of the oxidation tube (8) through a guide rod (21), and the outer wall of the oxidation tube (8) is in contact with the inner wall of the round tube (7).

2. The sludge treatment device generated during rubber production according to claim 1, characterized in that, One end of the drive shaft (3) is provided with a drive component, and the drive component is symmetrically arranged on both sides inside the dehydration tank (1).

3. The sludge treatment device generated during rubber production according to claim 2, characterized in that, The transmission component includes two transmission teeth (13), and a chain (10) is sleeved on the outside of the two transmission teeth (13). A blade (6) is provided on the chain link on the chain (10). A rotating shaft (11) is installed at one end of the transmission teeth (13), and one end of the rotating shaft (11) is rotatably disposed inside the dehydration tank (1).

4. The sludge treatment device generated during rubber production according to claim 3, characterized in that, The two lower transmission teeth (13) are connected by a round shaft (12), and there is a gap between the round shaft (12) and the lower oxide tube (8).

5. The sludge treatment device generated during rubber production according to claim 4, characterized in that, Two connecting plates (5) are symmetrically arranged on the side wall of the dehydration tank (1) below the roller (2). Both connecting plates (5) are inclined downwards, and several slots (4) are provided on the inclined surface of the upper part of the connecting plates (5).

6. The sludge treatment device generated during rubber production according to claim 1, characterized in that, The bottom of the dehydration tank (1) is equipped with a water outlet pipe (15), and a valve assembly for controlling its opening and closing is provided on the water outlet pipe (15).

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