A pretreatment device for waste oil sludge recovery

Abstract

This utility model discloses a pretreatment device for waste oil sludge recycling, including a pretreatment tank. A feed pipe is connected to the upper left side of the pretreatment tank, and a conveying pipe is connected to the bottom right side of the pretreatment tank. A hydrocyclone separator is connected to the right end of the conveying pipe. A first connecting pipe and a second connecting pipe are respectively installed on the upper and lower sides of the left end of the conveying pipe. This utility model utilizes a stirring shaft and equidistantly distributed stirring rods within the pretreatment tank to form a three-dimensional stirring structure, effectively breaking down large particles of impurities in the waste oil sludge and preventing them from accumulating and clogging the pipes. The conveying pipe can be connected to an external cleaning system via the first and second connecting pipes. When a pressure sensor detects an abnormal pressure difference in the pipe, a backwashing procedure is automatically triggered, using high-pressure fluid to remove deposits from the inner wall. The spiral guide plate inside the conveying tank guides the material's directional flow, and is easy to disassemble and clean internal residues in case of later blockages.

Description

Technical Field

[0001] This utility model relates to the field of waste oil sludge treatment technology, specifically a pretreatment device for waste oil sludge recycling. Background Technology

[0002] In the field of environmental protection, the recycling and treatment of waste oil sludge is of paramount importance. Currently, common waste oil sludge recycling pretreatment equipment mostly uses processes such as stirring, filtration, and centrifugal separation to separate oil, water, and sludge. However, existing equipment generally suffers from clogging problems during operation, which seriously affects the normal operation and processing efficiency of the equipment. Existing anti-clogging measures mostly rely on manual periodic cleaning or simple flushing devices, which have low cleaning efficiency, high labor intensity, and cannot fundamentally solve the clogging problem, increasing equipment maintenance costs and operating energy consumption. Utility Model Content

[0003] The purpose of this invention is to provide a pretreatment device for the recycling of waste oil sludge, which has the advantages of being anti-clogging and easy to clean.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a pretreatment device for waste oil sludge recycling, comprising a pretreatment box, an inlet pipe connected to the upper left side of the pretreatment box, a conveying pipe connected to the bottom right side of the pretreatment box, a cyclone separator connected to the right end of the conveying pipe, a first connecting pipe and a second connecting pipe respectively installed on the upper and lower sides of the left end of the conveying pipe, a conveying box connected to the inside of the upper end of the conveying pipe, and a spiral guide plate installed inside the conveying box through a shaft and a positioning vertical rod.

[0005] As a preferred embodiment, a sealing top cover is snapped onto the top of the conveyor box, and the two ends of the sealing top cover are bent and fitted to the side of the conveyor box.

[0006] As a preferred embodiment, support frames are installed on the lower front and rear sides of the conveyor box. Support springs are symmetrically installed inside the support frames. A lifting plate is fixedly installed on the upper end of the support spring. An auxiliary clamping plate is fixedly installed on the inner end of the lifting plate. The auxiliary clamping plate fits into the bent part of the sealing top cover, and a positioning insert is inserted at the connection point.

[0007] As a preferred embodiment, the auxiliary card plate and the bent portion of the sealing top cover are provided with insertion slots, and the insertion end of the positioning insert plate is located inside the insertion slot.

[0008] As a preferred embodiment, a stirring motor is fixedly installed on the top of the pretreatment box, and the output shaft of the stirring motor passes through the interior of the pretreatment box and is fixedly installed with a stirring shaft. Stirring rods are installed at equal intervals on the surface of the stirring shaft.

[0009] As a preferred embodiment, the conveying pipe has through holes at both the top and bottom of its left end, and the first connecting pipe and the second connecting pipe are both sleeved on the outside of the through holes and locked by a control valve.

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

[0011] 1. This utility model forms a three-dimensional stirring structure by using a stirring shaft and equidistantly distributed stirring rods in the pretreatment box. This structure can effectively break down large particles of impurities in waste oil sludge, preventing them from accumulating and clogging the pipes. The conveying pipe can be connected to an external cleaning system through the first and second connecting pipes. When the pressure sensor detects an abnormal pressure difference in the pipe, it automatically triggers a backwashing program, using high-pressure fluid to remove deposits from the inner wall. The spiral guide plate in the conveying box can guide the material to flow in a directional manner. It is easy to disassemble and clean the internal residues when blockages occur later.

[0012] 2. This utility model uses the bending design at both ends of the sealing top cover to fit the side of the conveyor box, forming a ring-shaped sealing structure. Compared with the traditional flat seal, it can effectively prevent materials from overflowing from the edge under pressure. It is especially suitable for working conditions with positive pressure in the conveying pipeline. The snap-fit ​​installation method does not require bolts or other complex fasteners. With the cooperation of the auxiliary card plate and the positioning insert plate, the top cover can be disassembled in a short time, which is convenient for quick cleaning of the inside of the conveyor box or replacement of the spiral guide plate, reducing equipment maintenance downtime. Attached Figure Description

[0013] Figure 1 This is a three-dimensional view of the structure of this utility model;

[0014] Figure 2 This is a partial structural cross-sectional view of the present invention;

[0015] Figure 3 This is a partial structural cross-sectional view of the conveyor box of this utility model;

[0016] Figure 4 This utility model Figure 3 A magnified view of a portion of point A in the middle.

[0017] In the diagram: 1. Pretreatment box; 2. Stirring motor; 3. Stirring shaft; 4. Stirring rod; 5. Conveying pipe; 6. Hydrocyclone separator; 7. First connecting pipe; 8. Second connecting pipe; 9. Conveying box; 10. Shaft; 11. Spiral guide plate; 12. Sealing top cover; 13. Support frame; 14. Lifting plate; 15. Support spring; 16. Auxiliary clamping plate; 17. Positioning insert plate; 18. Feed pipe. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0020] Example 1:

[0021] Please see Figure 1 As shown, this utility model provides a pretreatment device for waste oil sludge recycling, including a pretreatment box 1. A feed pipe 18 is connected to the upper left side of the pretreatment box 1, and a conveying pipe 5 is connected to the bottom right side of the pretreatment box 1. A cyclone separator 6 is connected to the right end of the conveying pipe 5. A first connecting pipe 7 and a second connecting pipe 8 are respectively installed on the upper and lower sides of the left end of the conveying pipe 5. A conveying box 9 is connected to the inside of the upper end of the conveying pipe 5. A spiral guide plate 11 is installed inside the conveying box 9 through a shaft 10 and a positioning vertical rod.

[0022] This technical solution uses the stirring shaft 3 and the equally spaced stirring rods 4 in the pretreatment box 1 to form a three-dimensional stirring structure, which can effectively break up large particles of impurities in waste oil sludge and prevent them from accumulating and clogging the pipeline. The conveying pipeline 5 can be connected to an external cleaning system through the first connecting pipe 7 and the second connecting pipe 8. When the pressure sensor detects an abnormal pressure difference in the pipeline, it automatically triggers the backwashing program to remove the deposits on the inner wall using high-pressure fluid. The spiral guide plate 11 in the conveying box 9 can guide the material to flow in a directional manner. It is easy to disassemble and clean the internal residue when blockage occurs later.

[0023] Example 2:

[0024] Based on Embodiment 1, this utility model is as follows: Figure 3 As shown, a sealing top cover 12 is snapped onto the top of the conveyor box 9. The two ends of the sealing top cover 12 are bent and fit against the side of the conveyor box 9.

[0025] Adopting such Figure 1The technical solution shown features a bend design at both ends of the sealing top cover 12 that fits snugly against the side of the conveyor box 9, forming a ring-shaped sealing structure. Compared with traditional flat seals, this effectively prevents materials from overflowing from the edges under pressure, making it particularly suitable for working conditions where there is positive pressure inside the conveying pipeline 5. The snap-fit ​​installation method eliminates the need for complex fasteners such as bolts. With the cooperation of the auxiliary clamping plate 16 and the positioning insert plate 17, the top cover can be disassembled in a short time, facilitating quick cleaning of the inside of the conveyor box 9 or replacement of the spiral guide plate 11, thus reducing equipment maintenance downtime.

[0026] Secondly, in the technical solution, support frames 13 are installed on the lower front and rear sides of the conveyor box 9. Support springs 15 are symmetrically installed inside the support frames 13. A lifting plate 14 is fixedly installed on the upper end of the support springs 15. An auxiliary clamping plate 16 is fixedly installed on the inner end of the lifting plate 14. The auxiliary clamping plate 16 fits against the bent part of the sealing top cover 12, and a positioning insert 17 is inserted at the connection point. An insertion groove is opened at the corresponding position of the auxiliary clamping plate 16 and the bent part of the sealing top cover 12. The insertion end of the positioning insert 17 is located inside the insertion groove.

[0027] Its adoption is as follows Figure 1 The technical solution shown uses a symmetrical arrangement of support springs 15 to apply a uniform upward preload force to the auxiliary clamping plate 16 by the lifting plate 14, ensuring that the auxiliary clamping plate 16 and the bent part of the sealing top cover 12 fit tightly together to form a reliable sealing interface. Through the cooperation of the positioning insert plate 17 and the insertion slot, the auxiliary clamping plate 16 and the sealing top cover 12 can be quickly locked and unlocked. The operator only needs to pull out the positioning insert plate 17, and the sealing top cover 12 can be automatically separated under the action of spring force without the need for tools, which significantly shortens the maintenance time.

[0028] Example 3:

[0029] This utility model is as follows Figures 1-4 As shown, a stirring motor 2 is fixedly installed on the top of the pretreatment box 1. The output shaft of the stirring motor 2 passes through the interior of the pretreatment box 1 and a stirring shaft 3 is fixedly installed thereon. Stirring rods 4 are installed at equal intervals on the surface of the stirring shaft 3. Through holes are opened at the top and bottom of the left end of the conveying pipe 5. The first connecting pipe 7 and the second connecting pipe 8 are both sleeved on the outside of the through holes and locked by a control valve.

[0030] Using the above technical solution, the stirring motor 2 is installed on the top of the pretreatment box 1, directly driving the stirring shaft 3 and stirring rod 4 to rotate. This allows for powerful stirring of the waste oil sludge, thoroughly breaking down any lumps and large particles, preventing these substances from entering the conveying pipe 5 and causing blockages. This ensures smooth operation of subsequent processes from the source. The first connecting pipe 7 and the second connecting pipe 8 are connected by a sleeve and locked at the left end of the conveying pipe 5 by a control valve. This allows for flexible connection to external high-pressure cleaning equipment or a backwashing system. When abnormal pressure is detected inside the conveying pipe 5, indicating a possible blockage, the connecting pipe is opened by the control valve to introduce high-pressure fluid to flush the inside of the pipe, promptly removing oil sludge deposits adhering to the pipe wall and preventing further blockage. The dual connecting pipe design provides more possibilities for process expansion, allowing connection to different treatment agent conveying pipes for dilution, chemical treatment, and other operations on the waste oil sludge, improving its fluidity and reducing adhesion and blockage probability within the pipe.

[0031] The working principle of this utility model is as follows: When the waste oil sludge enters the pretreatment box 1 through the feed pipe 18, the stirring motor 2 drives the stirring shaft 3 and stirring rod 4 to rotate and fully stir the material. After stirring, the waste oil sludge enters the hydrocyclone 6 through the conveying pipe 5 for separation. The hydrocyclone 6 adopts a gradually narrowing flow channel design. The material entering the hydrocyclone achieves solid-liquid separation under the action of centrifugal force. The left end of the conveying pipe 5 can be connected to the backwashing pipeline through the first connecting pipe 7 and the second connecting pipe 8. When the pipeline pressure is detected to rise abnormally, the pressure sensor installed externally can open the backwashing function through the control valve. High pressure fluid is used to flush the inner wall of the pipeline in reverse to remove the attached oil sludge deposits. When the waste oil sludge passes through the conveying box 9, it is guided by the spiral guide plate 11. Its spiral structure can guide the material to flow in a specific direction.

[0032] When blockage occurs inside the conveyor box 9, the positioning plates 17 on both sides can be removed, the bent edge of the sealing top cover 12 can be separated from the auxiliary card plate 16, the sealing top cover 12 can be removed, and then the internal spiral guide plate 11 can be removed and cleaned to avoid the formation of clumps inside that could affect subsequent conveying and discharge.

[0033] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0034] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. A pre-treatment device for waste oil sludge recovery, comprising a pre-treatment tank (1), characterized in that: The upper left side of the pretreatment box (1) is connected to the feed pipe (18), the bottom right side of the pretreatment box (1) is connected to the conveying pipe (5), the right end of the conveying pipe (5) is connected to the cyclone separator (6), the upper and lower sides of the left end of the conveying pipe (5) are respectively equipped with the first connecting pipe (7) and the second connecting pipe (8), the upper end of the conveying pipe (5) is connected to the conveying box (9), and the inside of the conveying box (9) is equipped with a spiral guide plate (11) through the shaft (10) and the positioning vertical rod.

2. A pre-treatment apparatus for waste oil sludge recovery according to claim 1, characterized in that: The top of the conveyor box (9) is fitted with a sealing top cover (12), the two ends of which are bent and attached to the side of the conveyor box (9).

3. A pre-treatment apparatus for waste oil sludge recovery according to claim 1, characterized in that: Support frames (13) are installed on the lower front and rear sides of the conveyor box (9). Support springs (15) are symmetrically installed inside the support frames (13). A lifting plate (14) is fixedly installed on the upper end of the support springs (15). An auxiliary card plate (16) is fixedly installed on the inner end of the lifting plate (14). The auxiliary card plate (16) fits against the bent part of the sealing top cover (12), and a positioning insert plate (17) is inserted at the connection.

4. The pretreatment equipment for waste oil sludge recycling according to claim 3, characterized in that: The auxiliary card plate (16) and the bent portion of the sealing top cover (12) are provided with insertion slots, and the insertion end of the positioning insert plate (17) is located inside the insertion slot.

5. A pre-treatment apparatus for waste oil sludge recovery according to claim 1, characterized in that: A stirring motor (2) is fixedly installed on the top of the pretreatment box (1). The output shaft of the stirring motor (2) passes through the interior of the pretreatment box (1) and a stirring shaft (3) is fixedly installed thereon. Stirring rods (4) are installed at equal intervals on the surface of the stirring shaft (3).

6. A pre-treatment apparatus for waste oil sludge recovery according to claim 1, characterized in that: The conveying pipe (5) has through holes at both the top and bottom of its left end. The first connecting pipe (7) and the second connecting pipe (8) are both sleeved on the outside of the through holes and locked by a control valve.

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