Oil sludge separation device for coal chemical industry wastewater

Abstract

The utility model relates to the technical field of coal chemical industry wastewater treatment, in particular to an oil sludge separation device for coal chemical industry wastewater. Comprising a tank body with an opening in the top end, a first blow-off pipe is arranged at the bottom of the tank body, a first cylinder is fixedly installed at the top of the tank body, a cover plate is arranged at the top of the first cylinder, a second cylinder located in the first cylinder is fixedly installed at the bottom of the cover plate, and the top end of the tank body extends into the second cylinder; a feeding pipe is arranged on one side of the tank body, a second blow-off pipe is arranged on one side of the first cylinder, the first cylinder and the tank body are provided with the same backflow pipe, a backflow pump is arranged on the backflow pipe, and the second cylinder is rotationally sleeved with an annular bevel gear. Through a simple cleaning structure, the interior of the secondary sedimentation chamber can be conveniently cleaned, dirt can be effectively prevented from being attached to the inner wall of the secondary sedimentation chamber, a pipeline is prevented from being blocked, and great convenience is brought to treatment work of coal chemical industry wastewater.

Description

Technical Field

[0001] This utility model relates to the field of coal chemical wastewater treatment technology, specifically to an oil-sludge separation device for coal chemical wastewater. Background Technology

[0002] Coal chemical industry mainly produces various coal chemical products through coking, gasification, and dry distillation. The main product of coking is metallurgical coke, with byproducts including coal gas and aromatics such as benzene, toluene, xylene, and naphthalene. Coal gasification mainly produces city gas, various fuel gases, and syngas. Low-temperature coal dry distillation, direct coal liquefaction, and indirect coal liquefaction mainly produce synthetic petroleum and liquid chemical products. With continuous economic development, market demand for various coal chemical products is constantly increasing. The coal chemical process generates a large amount of wastewater, requiring the separation of oil and sludge during wastewater treatment. Existing technology discloses an oil and sludge separation device for coal chemical wastewater, authorized by publication number CN220723736U, including a reactor, an overflow weir, and a sludge return mechanism; the overflow weir is located inside the reactor, and the overflow weir... The internal cavity of the reactor is divided into a flocculation zone and a secondary sedimentation zone; the flocculation zone and the secondary sedimentation zone are connected by an overflow weir; the sludge return mechanism is located outside the reactor, with its inlet connected to the secondary sedimentation zone and its outlet connected to the flocculation zone; the sludge return mechanism is used to return sludge from the secondary sedimentation zone to the flocculation zone for secondary flocculation treatment; this invention significantly increases the collision probability between floc particles with a low flocculant dosage, effectively reducing the treatment burden caused by excessive dosage and lowering treatment costs.

[0003] However, it was found during use that the above design lacked a cleaning structure for the secondary sedimentation chamber, making it difficult to clean the interior of the secondary sedimentation chamber. This resulted in a large amount of dirt adhering to the inner wall of the secondary sedimentation chamber, which could easily cause pipe blockage and bring many troubles to the treatment of coal chemical wastewater. Utility Model Content

[0004] To address the above problems, the purpose of this utility model is to provide an oil-sludge separation device for coal chemical wastewater, which facilitates cleaning of the secondary sedimentation chamber, effectively prevents dirt from adhering to the inner wall of the secondary sedimentation chamber, prevents pipe blockage, greatly facilitates the treatment of coal chemical wastewater, and solves the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an oil-sludge separation device for coal chemical wastewater, comprising a tank with an open top, a first drain pipe at the bottom of the tank, a first cylinder fixedly installed at the top of the tank, a cover plate at the top of the first cylinder, a second cylinder fixedly installed at the bottom of the cover plate inside the first cylinder, the top of the tank extending into the second cylinder, a feed pipe on one side of the tank, a second drain pipe on one side of the first cylinder, a common return pipe on the first cylinder and the tank, a return pump on the return pipe, a ring bevel gear rotatably mounted on the second cylinder, two supports fixedly installed at the bottom of the ring bevel gear, a first scraper fixedly installed on one side of the supports in contact with the outer wall of the second cylinder, a second scraper fixedly installed on the supports, the second scraper contacting both the inner wall of the first cylinder and the top outer wall of the tank, a first motor on one side of the first cylinder, the output shaft of the first motor extending into the first cylinder and having a bevel gear meshing with the ring bevel gear.

[0006] To prevent flocculent material from adhering to the inner wall of the tank:

[0007] As a further improvement to the above technical solution: the cover plate also includes a second motor, which is fixed on the top of the cover plate. The output shaft of the second motor extends into the second cylinder and is fixedly installed with a stirring shaft. The stirring shaft is rotatably installed in the tank. Multiple third scrapers are fixedly installed on the stirring shaft, and the third scrapers are slidably connected to the inner wall of the tank.

[0008] The beneficial effects of this improvement are: this design facilitates the stirring of wastewater in the tank, makes it easier to mix flocculants, and helps prevent flocculants from adhering to the inner wall of the tank, thus ensuring the cleanliness of the inner wall of the tank.

[0009] To facilitate limiting the output shaft of the first motor:

[0010] As a further improvement to the above technical solution: a first through hole is provided on one side of the inner wall of the first cylinder, and the output shaft of the first motor rotates through the first through hole.

[0011] The beneficial effect of this improvement is that by setting the first through hole, it is easier to limit the output shaft of the first motor.

[0012] To prevent the first cylinder from leaking:

[0013] As a further improvement to the above technical solution: a sealing ring is fixedly installed in the first through hole, and the sealing ring is rotatably sleeved on the output shaft of the first motor.

[0014] The beneficial effect of this improvement is that by setting a sealing ring, leakage of the first cylinder can be prevented.

[0015] To facilitate improving structural stability:

[0016] As a further improvement to the above technical solution: a hoop is fixedly sleeved on the second cylinder, and the annular bevel gear is rotatably sleeved on the hoop.

[0017] The beneficial effect of this improvement is that by setting up the hoop, the stability of the structure can be improved.

[0018] To facilitate the addition of chemicals to the tank:

[0019] As a further improvement to the above technical solution: the second scraper has an L-shaped structure, and a medicine inlet pipe is provided on one side of the tank.

[0020] The beneficial effect of this improvement is that by setting up a drug inlet pipe, it is easier to add the drug to the tank.

[0021] To facilitate the support and positioning of the stirring shaft:

[0022] As a further improvement to the above technical solution: a crossbar is fixedly installed inside the tank, and the stirring shaft rotates through the crossbar.

[0023] The beneficial effect of this improvement is that by setting a crossbar, it is easier to support and limit the stirring shaft.

[0024] To facilitate limiting the output shaft of the second motor:

[0025] As a further improvement to the above technical solution: a second through hole is provided through the cover plate, and the output shaft of the second motor rotates through the second through hole.

[0026] The beneficial effect of this improvement is that by setting a second through hole, it is easier to limit the output shaft of the second motor.

[0027] The beneficial effects of this utility model are as follows: the simple cleaning structure facilitates the cleaning of the interior of the secondary sedimentation chamber, effectively prevents dirt from adhering to the inner wall of the secondary sedimentation chamber, prevents pipe blockage, and brings great convenience to the treatment of coal chemical wastewater. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the front sectional view of the present invention;

[0029] Figure 2 This utility model Figure 1 A magnified structural diagram of part A in the middle;

[0030] Figure 3 This utility model Figure 1 A magnified structural diagram of part B in the middle section;

[0031] Figure 4 This is a schematic diagram of the three-dimensional assembly structure of the bracket, the first scraper, and the second scraper in this utility model;

[0032] Figure 5 This is a top sectional view of the present invention.

[0033] In the diagram: 1. Tank body; 2. First drain pipe; 3. First cylinder; 4. Cover plate; 5. Second cylinder; 6. Feed pipe; 7. Second drain pipe; 8. Return pipe; 9. Return pump; 10. Ring bevel gear; 11. Support; 12. First scraper; 13. Second scraper; 14. First motor; 15. Bevel gear; 16. Second motor; 17. Stirring shaft; 18. Third scraper. Detailed Implementation

[0034] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not be used to limit the scope of protection of this utility model in any way.

[0035] like Figure 1-5As shown, an oil-sludge separation device for coal chemical wastewater includes a tank 1 with an open top. A first drain pipe 2 is provided at the bottom of the tank 1. A first cylinder 3 is fixedly installed at the top of the tank 1. A cover plate 4 is provided at the top of the first cylinder 3. A second cylinder 5 located inside the first cylinder 3 is fixedly installed at the bottom of the cover plate 4. The top of the tank 1 extends into the second cylinder 5. A feed pipe 6 is provided on one side of the tank 1. A second drain pipe 7 is provided on one side of the first cylinder 3. The first cylinder 3 and the tank 1 are provided with the same return pipe 8. A return pump 9 is provided on the return pipe 8. An annular bevel gear 10 is rotatably sleeved on the second cylinder 5. Two supports 11 are fixedly installed at the bottom of the annular bevel gear 10. A first scraper 12 is fixedly installed on one side of the support 11, contacting the outer wall of the second cylinder 5. A second scraper 13 is fixedly installed on the support 11, contacting both the inner wall of the first cylinder 3 and the top outer wall of the tank 1. A first motor 14 is provided on one side of the first cylinder 3, with its output shaft extending into the first cylinder 3 and equipped with a bevel gear 15. The bevel gear 15 meshes with a ring bevel gear 10. This simple cleaning structure facilitates cleaning of the interior of the secondary sedimentation chamber, effectively preventing dirt from adhering to the inner wall of the secondary sedimentation chamber and preventing pipe blockage, thus greatly facilitating the treatment of coal chemical wastewater. The cover plate 4 also includes a second motor 16, which is fixed to the cover plate. At the top of cylinder 4, the output shaft of the second motor 16 extends into the second cylinder 5 and is fixedly mounted with a stirring shaft 17. The stirring shaft 17 is rotatably mounted inside the tank body 1. Multiple third scrapers 18 are fixedly mounted on the stirring shaft 17. The third scrapers 18 are slidably connected to the inner wall of the tank body 1. This arrangement facilitates the stirring of wastewater in the tank body 1, making it easier to mix flocculants. It also helps prevent flocculants from adhering to the inner wall of the tank body 1, thus ensuring the cleanliness of the inner wall of the tank body 1. A first through hole is formed on one side of the inner wall of the first cylinder 3. The output shaft of the first motor 14 rotates through the first through hole. The first through hole facilitates the limiting of the output shaft of the first motor 14. A sealing device is fixedly installed inside the first through hole. A sealing ring is rotatably fitted onto the output shaft of the first motor 14. This sealing ring prevents leakage from the first cylinder 3. A hoop is fixedly fitted onto the second cylinder 5, and the annular bevel gear 10 is rotatably fitted onto the hoop. This hoop improves structural stability. The second scraper 13 has an L-shaped structure. A medicine inlet pipe is provided on one side of the tank 1, facilitating the addition of medicine to the tank 1. A crossbar is fixedly installed inside the tank 1, and the stirring shaft 17 rotatably passes through the crossbar. This crossbar provides support and limits for the stirring shaft 17. A second through hole is provided on the cover plate 4, through which the output shaft of the second motor 16 rotatably passes.This facilitates limiting the output shaft of the second motor 16.

[0036] The working principle of this utility model is as follows: In use, coal chemical wastewater is first supplied to tank 1 through feed pipe 6. Then, the second motor 16 is turned on, and the output shaft of the second motor 16 drives the stirring shaft 17 to rotate, stirring the wastewater. Next, flocculant is added to tank 1 through the inlet pipe, causing the wastewater and flocculant to mix, resulting in oil flocculation and coal slime sedimentation. Simultaneously, the rotation of the stirring shaft 17 drives multiple third scrapers 18 to rotate, cleaning the inner wall of tank 1. This arrangement facilitates stirring of the wastewater in tank 1, promotes mixing of the flocculant, and prevents flocculants from adhering to the inner wall of tank 1, thus ensuring the cleanliness of the inner wall. As wastewater enters tank 1, the water level rises, and most of the flocculants overflow through the opening of tank 1 into the first cylinder 3 for secondary sedimentation. Then, the return pump 9 is turned on, pumping the wastewater from the first cylinder 3. The wastewater is then fed into tank 1 for further flocculation, thus forming a reflux treatment cycle. Afterwards, feed pipe 6 is shut off, allowing the coal sludge in the wastewater within tank 1 and the first cylinder 3 to settle sufficiently. Then, the first drain pipe 2 and the second drain pipe 7 are opened to discharge the sludge and oily flocculated wastewater. When cleaning the secondary sedimentation chamber is required, the first motor 14 is turned on. The output shaft of the first motor 14 drives the bevel gear 15 to rotate, which in turn drives the ring bevel gear 10. The ring bevel gear 10 drives the two supports 11 to rotate, which in turn drives the first scraper 12 and the second scraper 13 to rotate. The first scraper 12 cleans the outer wall of the second cylinder 5, while the second scraper 13 cleans the inner wall of the first cylinder 3 and the top of tank 1. This setup facilitates cleaning of the secondary sedimentation chamber, effectively preventing dirt from adhering to the inner wall and clogging the pipes, thus greatly simplifying the treatment of coal chemical wastewater.

[0037] 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.

[0038] 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. An oil-sludge separation device for coal chemical wastewater, comprising a tank (1) with an open top, a first drain pipe (2) at the bottom of the tank (1), a first cylinder (3) fixedly installed at the top of the tank (1), a cover plate (4) at the top of the first cylinder (3), a second cylinder (5) fixedly installed at the bottom of the cover plate (4) inside the first cylinder (3), the top of the tank (1) extending into the second cylinder (5), a feed pipe (6) on one side of the tank (1), a second drain pipe (7) on one side of the first cylinder (3), a common return pipe (8) on the first cylinder (3) and the tank (1), and a return pump (9) on the return pipe (8), characterized in that: A ring bevel gear (10) is rotatably mounted on the second cylinder (5). Two brackets (11) are fixedly installed at the bottom of the ring bevel gear (10). A first scraper (12) is fixedly installed on one side of the bracket (11) and contacts the outer wall of the second cylinder (5). A second scraper (13) is fixedly installed on the bracket (11). The second scraper (13) contacts the inner wall of the first cylinder (3) and the top outer wall of the tank (1). A first motor (14) is provided on one side of the first cylinder (3). The output shaft of the first motor (14) extends into the first cylinder (3) and is provided with a bevel gear (15). The bevel gear (15) meshes with the ring bevel gear (10).

2. The oil-sludge separation device for coal chemical wastewater according to claim 1, characterized in that: The cover plate (4) also includes a second motor (16), which is fixed on the top of the cover plate (4). The output shaft of the second motor (16) extends into the second cylinder (5) and is fixedly installed with a stirring shaft (17). The stirring shaft (17) is rotatably installed inside the tank (1). Multiple third scrapers (18) are fixedly installed on the stirring shaft (17). The third scrapers (18) are slidably connected to the inner wall of the tank (1).

3. The oil-sludge separation device for coal chemical wastewater according to claim 1, characterized in that: A first through hole is provided on one side of the inner wall of the first cylinder (3), and the output shaft of the first motor (14) rotates through the first through hole.

4. The oil-sludge separation device for coal chemical wastewater according to claim 3, characterized in that: A sealing ring is fixedly installed in the first through hole, and the sealing ring is rotatably sleeved on the output shaft of the first motor (14).

5. An oil-sludge separation device for coal chemical wastewater according to claim 1, characterized in that: A hoop is fixedly fitted on the second cylinder (5), and the annular bevel gear (10) is rotatably fitted on the hoop.

6. The oil-sludge separation device for coal chemical wastewater according to claim 1, characterized in that: The second scraper (13) has an L-shaped structure, and a medicine inlet pipe is provided on one side of the tank (1).

7. An oil-sludge separation device for coal chemical wastewater according to claim 2, characterized in that: A crossbar is fixedly installed inside the tank (1), and the stirring shaft (17) rotates through the crossbar.

8. An oil-sludge separation device for coal chemical wastewater according to claim 2, characterized in that: The cover plate (4) has a second through hole, through which the output shaft of the second motor (16) rotates.

Images