An oil-containing sludge pretreatment screening device

Abstract

The utility model discloses an oily sludge pretreatment screening device belongs to oily sludge processing technical field, solved the screening efficiency low, the problem of slow mud oil separation, low impurity removal rate in the prior art, including feed bin, pretreatment device and oil -water separation device, and the oil -water separation device includes the outer tube, and the outer tube one side is provided with the feed port, and the other side is provided with the discharge gate, and the feed port outside is equipped with the first drive motor, and the first drive motor output end is connected with the rotating shaft, and the rotating shaft surface is provided with a plurality of spiral pieces, and the rotating shaft surface is provided with a plurality of emanation holes, and the emanation hole is filled with microwave emission column. The utility model utilizes oil -water separation device to screen out the impurity in oily sludge from the screening net, and the rotating shaft is rapidly extruded to the oily sludge, and the microwave emission column promotes the surface rupture of the oily sludge, realizes the quick separation of oily sewage, and sets up the magnetic conveying belt in the conveying process, and improves the impurity removal rate.

Description

Technical Field

[0001] This utility model belongs to the field of oily sludge treatment technology, and more specifically, it relates to an oily sludge pretreatment screening device. Background Technology

[0002] Oily sludge refers to sludge mixed with crude oil, various refined oils, residual oil, and other heavy oils. It is caused by accidents, improper operation, outdated equipment, damage, corrosion, and other reasons, resulting in the leakage of crude oil and refined oil onto the ground. Oily sludge is harmful to humans, plants, and aquatic life. The oil vapors evaporated into the air can irritate the skin, eyes, and respiratory organs, and can render the soil unsuitable for plant growth. It is difficult to treat and remediate and is one of the major pollutants from the petroleum and petrochemical industries. Currently, oily sludge is typically screened using a vibrating generator installed at the bottom of a hopper. The generator drives the hopper to vibrate. However, due to the poor fluidity of oily sludge, unlike powdery materials, the efficiency of traditional vibrating screens is very low. Furthermore, because the vibration amplitude of these screens is small, when screening high-viscosity oily sludge, the sludge cannot quickly pass through the screen holes, leading to sludge accumulation and blockage, resulting in slow oil-sludge separation. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by providing a pretreatment screening device for oily sludge that offers high screening efficiency, fast mud-oil separation, and high impurity removal rate.

[0004] To achieve the above technical objectives, the technical solution adopted by this utility model of oily sludge pretreatment screening device is as follows:

[0005] A pretreatment screening device for oily sludge includes a feed hopper, a pretreatment unit located below the outlet of the feed hopper, and an oil-water separation unit located below the outlet of the pretreatment unit. The oil-water separation unit includes an outer cylinder with a feed inlet on one side and a discharge outlet on the other side. A first drive motor is located outside the feed inlet, and the output end of the first drive motor is connected to a rotating shaft extending into the outer cylinder. Multiple spiral blades are wound around the surface of the rotating shaft, and the distance between adjacent spiral blades narrows from both ends towards the middle. The device has multiple emitting holes, each located between adjacent spiral blades. Each emitting hole is filled with a microwave emitting column. The end of the rotating shaft abuts against the inner wall of the outer cylinder. An inner cylinder is located inside the outer cylinder. A pair of support rods are provided on both sides of the rotating shaft. The end of each support rod away from the rotating shaft is fixedly connected to the inner wall of the inner cylinder. An annular groove is provided on the inner wall of the outer cylinder. An annular slide rail is provided on both sides of the inner cylinder. The annular slide rail slides within the annular groove. Fixing openings are provided on the upper and lower inner walls of the inner cylinder. Screens are installed in the fixing openings.

[0006] Preferably, the pretreatment device includes a housing, a vibrating screen inclinedly disposed within the housing, and a second drive motor disposed below the vibrating screen, with an outlet at the bottom of the housing.

[0007] Preferably, the feed inlet end is provided with a feed hopper corresponding to the outlet of the pretreatment device.

[0008] Preferably, a sludge conveyor belt is provided below the discharge port, and the surface of the sludge conveyor belt is provided with multiple magnets.

[0009] Preferably, the discharge end of the sludge conveyor belt is higher than its inlet end.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] This invention uses a pretreatment device to screen out large-particle waste such as stones from oily sludge, reducing the difficulty of subsequent oily sludge treatment. The oil-water separator utilizes an annular slide rail sliding in an annular groove, causing the inner cylinder to rotate within the outer cylinder. Under centrifugal force, impurities in the oily sludge are sieved out from the screen. The rotating shaft rapidly compresses the oily sludge, and the microwave emission column promotes surface rupture of the oily sludge, achieving rapid separation of oily wastewater and accelerating the efficiency of oil-sludge separation. A magnetic conveyor belt is installed during the conveying process to prevent the discharge of oily sludge impurities and environmental pollution. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is an enlarged schematic diagram of part A of this utility model.

[0014] In the diagram: 1. Feed hopper; 2. Outer cylinder; 3. Feed inlet; 4. Discharge outlet; 5. First drive motor; 6. Rotating shaft; 7. Spiral blade; 8. Emitting hole; 9. Microwave emitting column; 10. Inner cylinder; 11. Support rod; 12. Annular chute; 13. Annular slide rail; 14. Screen; 15. Shell; 16. Vibrating screen; 17. Second drive motor; 18. Outlet; 19. Feed hopper; 20. Sludge conveyor belt; 21. Magnet. Detailed Implementation

[0015] The invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0016] like Figure 1-2As shown, an oily sludge pretreatment screening device includes a feed hopper 1, a pretreatment device located below the outlet of the feed hopper 1, and an oil-water separation device located below the outlet of the pretreatment device. The oil-water separation device includes an outer cylinder 2, with a feed inlet 3 on one side and a discharge outlet 4 on the other side. A feed hopper 19 corresponding to the outlet 18 of the pretreatment device is inserted into the feed inlet 3. A sludge conveyor belt 20 is located below the discharge outlet 4, and multiple magnets 21 are provided on the surface of the sludge conveyor belt 20. The discharge end of the sludge conveyor belt 20 is higher than its feed end. A first drive motor 5 is located outside the feed inlet 3, and the output end of the first drive motor 5 is connected to a rotating shaft 6 extending into the outer cylinder 2. Multiple spirals are wound around the surface of the rotating shaft 6. The rotating blades 7 have a distance between multiple adjacent spiral blades 7 that narrows from both ends toward the middle. The rotating shaft 6 has multiple emitting holes 8 on its surface, with each emitting hole 8 located between adjacent spiral blades 7. Each emitting hole 8 is filled with a microwave emitting column 9. The end of the rotating shaft 6 abuts against the inner wall of the outer cylinder 2. The outer cylinder 2 contains an inner cylinder 10. A pair of support rods 11 are provided on both sides of the surface of the rotating shaft 6. The end of each support rod 11 away from the rotating shaft 6 is fixedly connected to the inner wall of the inner cylinder 10. The inner wall of the outer cylinder 2 has an annular groove 12. Both sides of the inner cylinder 10 have annular slide rails 13 that slide within the annular groove 12. The upper and lower inner walls of the inner cylinder 10 have fixing openings, and screens 14 are installed in the fixing openings.

[0017] The pretreatment device includes a housing 15, a vibrating screen 16 inclinedly disposed within the housing 15, and a second drive motor 17 disposed below the vibrating screen 16. An outlet 18 is provided at the bottom of the housing 15.

[0018] In operation, the pretreatment device removes large-particle impurities such as stones from the oily sludge. Then, the first drive motor 5 in the oil-water separation device drives the rotating shaft 6 to rotate. Under the action of a pair of support rods 11, the annular slide rail 13 slides in the annular slide groove 12, thereby causing the inner cylinder 10 to rotate in the outer cylinder 2. Under the action of centrifugal force, the screen 14 screens out the impurities in the sludge, and the oil and water enter the gap between the outer cylinder 2 and the inner cylinder 10. At the same time, the microwave emitting column 9 emits microwaves to the oily sludge, causing the sludge surface to break and water molecules to seep out, thus accelerating the separation of oil and sludge. The spiral blade 7 rotates and compresses the sludge during the rotation process, accelerating the pressing of the sludge. After processing, the sludge is transported to the next process by the sludge conveyor belt 20. The magnets on the surface of the sludge conveyor belt adsorb the iron impurities inside the sludge, preventing the sludge from being mixed with other impurities.

[0019] In summary, this is merely a preferred embodiment of the present utility model and is not intended to limit the scope of the present utility model. All equivalent variations and modifications made in accordance with the shape, structure, features and spirit of the claims of the present utility model should be included within the scope of the claims of the present utility model.

Claims

1. A pretreatment screening device for oily sludge, comprising a feed hopper, a pretreatment device disposed below the outlet of the feed hopper, and an oil-water separation device disposed below the outlet of the pretreatment device, characterized in that: The oil-water separator includes an outer cylinder with an inlet on one side and an outlet on the other. A first drive motor is located outside the inlet, and the output end of the first drive motor is connected to a rotating shaft extending into the outer cylinder. Multiple spiral blades are wound around the surface of the rotating shaft, and the distance between multiple adjacent spiral blades narrows from both ends to the middle. Multiple emitting holes are located on the surface of the rotating shaft, with each emitting hole located between adjacent spiral blades. Each emitting hole is filled with a microwave emitting column. The end of the rotating shaft abuts against the inner wall of the outer cylinder. An inner cylinder is located inside the outer cylinder. A pair of support rods are located on both sides of the rotating shaft, and the end of each support rod away from the rotating shaft is fixedly connected to the inner wall of the inner cylinder. An annular groove is provided on the inner wall of the outer cylinder, and an annular slide rail is provided on both sides of the inner cylinder. The annular slide rail slides within the annular groove. Fixing openings are located on the upper and lower inner walls of the inner cylinder, and screens are installed in the fixing openings.

2. The oily sludge pretreatment screening device according to claim 1, characterized in that: The pretreatment device includes a housing, a vibrating screen inclinedly disposed within the housing, and a second drive motor disposed below the vibrating screen. An outlet is provided at the bottom of the housing.

3. The oily sludge pretreatment screening device according to claim 1, characterized in that: The feed inlet end is fitted with a feed hopper corresponding to the outlet of the pretreatment device.

4. The oily sludge pretreatment screening device according to claim 1, characterized in that: A sludge conveyor belt is provided below the discharge port, and multiple magnets are provided on the surface of the sludge conveyor belt.

5. The oily sludge pretreatment screening device according to claim 4, characterized in that: The discharge end of the sludge conveyor belt is higher than its inlet end.

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