Coal tar filtering equipment facilitating replacement of filter cloth

Abstract

This utility model discloses a coal tar filtration device that facilitates filter cloth replacement, relating to the field of filtration technology. It includes: a support box; a U-shaped filter box fixed inside the support box and aligned with the opening direction of the support box; a filter cloth adhered to the inner wall of the U-shaped filter box, with one side wound onto a take-up roller and the other side wound onto an unwound roller; and a pair of stirring components located at two corners inside the U-shaped filter box, thus limiting the position of the filter cloth. The pair of stirring components in this device has a dual function: firstly, when the stirring shaft drives the elastic plate to rotate, it can uniformly stir the coal tar inside the U-shaped filter box, preventing localized accumulation and clogging of the filter cloth, ensuring filtration uniformity; secondly, the elastic plate, in a bent state, presses against the filter cloth, stably limiting the filter cloth to both sides of the bottom of the U-shaped filter box, ensuring that the filter cloth always adheres to the inner wall of the filter box, preventing impurity leakage caused by filter cloth displacement, and improving filtration accuracy.

Description

Technical Field

[0001] This utility model relates to the field of filtration technology, specifically to a coal tar filtration device that facilitates filter cloth replacement. Background Technology

[0002] In the coal tar processing flow, filtration is a crucial step in ensuring coal tar purity and removing impurities. Filter cloth, as a core consumable in the filtration process, directly affects filtration efficiency and effectiveness. Currently, the coal tar filtration equipment used in the industry has significant technical shortcomings in practical applications:

[0003] On the one hand, solid impurities in coal tar easily adhere to the surface of filter cloth, requiring frequent replacement to maintain filtration performance. However, existing equipment cannot achieve rapid updates through filter cloth rotation. Each time the filter cloth is replaced, the machine must be stopped and the equipment disassembled, making the process cumbersome. Furthermore, most equipment uses bolts to fix and limit the filter cloth, making the disassembly process time-consuming, labor-intensive, and significantly impacting production time, resulting in low overall filtration efficiency.

[0004] On the other hand, some equipment lacks a stirring mechanism specifically for coal tar, causing coal tar to accumulate locally on the filter cloth surface during filtration. This not only accelerates filter cloth clogging but may also lead to uneven filtration, affecting the final quality of the coal tar product. These problems collectively restrict the continuity and stability of the coal tar filtration process, making it difficult to meet the demands of industrial production for efficient and convenient filtration operations. Utility Model Content

[0005] In view of the shortcomings of the existing technology, this utility model provides a coal tar filtration device that facilitates the replacement of filter cloth.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows:

[0007] Coal tar filtration equipment that facilitates filter cloth replacement includes:

[0008] Carrier box;

[0009] The U-shaped filter box is fixed inside the carrier box and faces the same direction as the opening of the carrier box;

[0010] The filter cloth is attached to the inner wall of the U-shaped filter box, with one side wound onto the take-up roller and the other side wound onto the unwind roller.

[0011] A pair of stirring components, each located at one of the two corners inside the U-shaped filter box, to limit the filter cloth;

[0012] The stirring shaft is rotatably connected inside the U-shaped filter box and is perpendicular to the direction of movement of the filter cloth;

[0013] An elastic plate is fixed in a ring around the periphery of the stirring shaft. The side of the elastic plate away from the stirring shaft rests against the filter cloth. When the side of the elastic plate away from the stirring shaft rests against the filter cloth, the elastic plate is in a bent state.

[0014] in:

[0015] During the rotation of the stirring shaft, at least one elastic plate compresses the filter cloth on the bottom surface of the U-shaped filter box, and at least one elastic plate compresses the filter cloth on the inner side wall of the U-shaped filter box.

[0016] Preferably, all the elastic plates on the stirring shaft are arranged in a ring at equal intervals, and the side of the elastic plate that contacts the filter cloth is arc-shaped.

[0017] Preferably, it further includes a pair of limiting shafts, which are rotatably connected inside the U-shaped filter box, and the pair of limiting shafts are respectively located above the stirring assembly.

[0018] Preferably, it also includes threaded protrusions, which are symmetrically arranged around the periphery of the limiting shaft along the center of the limiting shaft, and the threaded protrusions are pressed against the filter cloth.

[0019] Preferably, two symmetrically distributed guide plates are fixed at the opening of the carrier box, and the feed inlet formed by the two guide plates is located directly above the U-shaped filter box.

[0020] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0021] This equipment utilizes a "rewind roller - unwind roller" filter cloth storage structure, designing the filter cloth as a continuously replaceable, pull-type system. During replacement, simply pulling the filter cloth replaces the contaminated cloth in the U-shaped filter box with a new, unfiltered cloth, eliminating the need to disassemble the equipment or remove bolts, achieving "non-stop" filter cloth replacement. This replacement method completely solves the problems of cumbersome and time-consuming disassembly in traditional equipment, significantly shortening filter cloth replacement time, improving the continuity of filtration operations, and reducing production losses caused by downtime.

[0022] The pair of stirring components equipped in this equipment have dual functions: on the one hand, when the stirring shaft drives the elastic plate to rotate, it can evenly stir the coal tar in the U-shaped filter box, avoiding local accumulation of coal tar that clogs the filter cloth and ensuring filtration uniformity; on the other hand, the elastic plate is bent and presses against the filter cloth, which can stably limit the filter cloth to the bottom two sides of the U-shaped filter box, ensuring that the filter cloth always adheres to the inner wall of the filter box, avoiding impurity leakage caused by filter cloth displacement, and improving filtration accuracy. Attached Figure Description

[0023] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts. Wherein:

[0024] Figure 1 This is a schematic diagram of the structure of the coal tar filtration device of this utility model, which facilitates filter cloth replacement;

[0025] Figure 2 This is a cross-sectional view of the coal tar filtration device of this utility model that facilitates filter cloth replacement.

[0026] Figure 3 This is a schematic diagram of the structure of the limiting shaft of this utility model.

[0027] The diagram shows the following labels: 1. Carrier box; 2. U-shaped filter box; 3. Filter cloth; 4. Agitator assembly; 41. Agitator shaft; 42. Elastic plate; 5. Limiting shaft; 51. Threaded protrusion; 6. Guide plate. Detailed Implementation

[0028] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0029] Example

[0030] like Figure 1-3 As shown

[0031] Overall composition and assembly relationship of equipment

[0032] This equipment is based on a core architecture of "load-filtration-drive-limit," with precise matching of the assembly relationships of each component to ensure functional synergy. The specific assembly is as follows:

[0033] Basic load-bearing structure: Load-bearing box 1 Load-bearing box 1 is a rectangular box with an open top. It is made of stainless steel that is resistant to coal tar corrosion. The bottom surface of the box is fixed with a U-shaped filter box 2 by welding. The opening direction of the U-shaped filter box 2 is the same as that of the load-bearing box 1, both facing upwards, forming a nested structure of "box and case". The load-bearing box 1 can receive a small amount of coal tar that leaks after filtration by the U-shaped filter box 2, avoiding material waste and equipment contamination.

[0034] Core Filtration Structure: U-shaped filter box 2 and filter cloth 3. The inner wall of the U-shaped filter box 2 is polished smooth, and the filter cloth 3 is tightly fitted to its inner wall, including the bottom and side walls, forming a closed filtration chamber. The filter cloth 3 is made of high-temperature resistant and oil-resistant polyester filter cloth. One end of the cloth is wound onto an external unwinding roller (not shown) and installed on one side of the carrier box, while the other end is wound onto an external take-up roller (not shown) and installed on the other side of the carrier box. The unwinding roller and the take-up roller rotate synchronously by manual or electric drive, enabling the filter cloth 3 to move continuously along the inner wall of the U-shaped filter box 2.

[0035] Functional component assembly: stirring assembly 4, limiting shaft 5 and guide plate 6

[0036] A pair of stirring components 4 are rotatably connected to two corners inside the U-shaped filter box 2 via bearings. The axis of the stirring shaft 41 is perpendicular to the direction of movement of the filter cloth 3, i.e., along the width of the bearing box, to ensure that the stirring range covers the corner blind area of ​​the U-shaped filter box.

[0037] A pair of limiting shafts 5 are also rotatably connected to the U-shaped filter box 2 through bearings, and are respectively located directly above the two stirring components 4, forming a "top and bottom clamping" limiting structure with the stirring components 4, which together constrains the position of the filter cloth 3;

[0038] Two symmetrically distributed guide plates 6 are fixed to the opening edge of the bearing box 1 by bolts. The guide plates 6 are inclined, and the feed port formed at their lower ends is directly opposite the center of the top opening of the U-shaped filter box 2, ensuring that the coal tar can fall accurately into the filter chamber and avoid splashing.

[0039] Functions and working mechanisms of core components

[0040] Mixing component 4: "Mixing + Limiting" dual function

[0041] The stirring assembly 4, consisting of a stirring shaft 41 and an elastic plate 42, is the core component for solving the problems of uneven filtration and filter cloth displacement. Its specific working mechanism is as follows:

[0042] The elastic plate 42 is made of aging-resistant nitrile rubber with a thickness of 3-5mm. Preferably, 4-6 plates are arranged in a ring at equal intervals along the circumference of the stirring shaft 41. The side of the elastic plate 42 that contacts the filter cloth 3 is polished into an arc shape to avoid scratching the filter cloth. When the elastic plate 42 is pressed against the filter cloth 3, because the filter cloth 3 adheres to the curved inner wall of the U-shaped filter box 2, the elastic plate 42 will naturally bend, generating continuous elastic pressure.

[0043] Dual-function implementation

[0044] Stirring function: The external motor drives the stirring shaft 41 to rotate clockwise at a speed of 10-20 r / min. When the elastic plate 42 rotates with the shaft, it will have a "scraping-disturbance" effect on the coal tar in the U-shaped filter box 2, breaking the static accumulation of coal tar and making the material evenly distributed on the surface of the filter cloth 3, avoiding local filter cloth from being quickly blocked due to dense impurities.

[0045] Limiting function: At any moment when the stirring shaft 41 rotates, at least one elastic plate 42 will press the filter cloth 3 on the bottom surface of the U-shaped filter box 2, and at the same time, at least one elastic plate 42 will press the filter cloth 3 on the side wall. Because the elastic plates are arranged in a ring, the filter cloth 3 will be firmly "pressed" onto the box wall by elastic pressure, preventing the filter cloth from shifting due to the impact or pulling of coal tar, and avoiding impurities from leaking from the gap between the filter cloth and the box wall.

[0046] Limiting shaft 5 and threaded protrusion 51: Ensure the flatness of the filter cloth

[0047] The limiting shaft 5 is a stainless steel round shaft with threaded protrusions 51 integrally formed on its circumference. The threaded protrusions 51 are symmetrically arranged around the center of the limiting shaft 5, i.e., the left thread rotates to the right and the right thread rotates to the left. The height of the threaded protrusions 51 is 1-2mm. They slightly press against the surface of the filter cloth 3. The working mechanism is as follows: When the filter cloth 3 is pulled to replace it, the friction between the filter cloth 3 and the limiting shaft 5 will drive the limiting shaft 5 to rotate synchronously. The symmetrically distributed threaded protrusions 51 will generate a lateral force that "pulls the filter cloth to both sides" so that the filter cloth always maintains a state of "tight in the middle and flat on both sides" during the movement. This avoids wrinkles in the filter cloth, which would reduce the effective filtration area by more than 30%, and ensures the stable filtration efficiency of the filter cloth.

[0048] Guide plate 6: Feeding accuracy control

[0049] The guide plate 6 is made of wear-resistant polyethylene and has an inclination angle of 30-45°. Its function is to guide the coal tar to "directly flow" into the U-shaped filter box 2. When the coal tar falls from the upper feeding device such as the hopper, it will first contact the inclined surface of the guide plate 6 and slide into the feed inlet along the inclined surface. This prevents the coal tar from splashing out of the bearing box due to the impact of falling, while ensuring that the material is concentrated in the effective filtration area of ​​the filter cloth 3 and reducing edge waste.

[0050] Filter cloth 3 replacement operation procedure

[0051] Traditional equipment requires shutdown and disassembly for 30-60 minutes to replace filter cloth. This equipment achieves "non-stop replacement" through a "continuous rotation" design. The specific steps are as follows:

[0052] Predicting when to replace: When the clarity of the filtered coal tar decreases or the filtration speed slows down significantly, it is determined that filter cloth 3 is clogged and needs to be replaced.

[0053] Initiating filter cloth rotation: Manually rotate the take-up roller or start the electric drive. The take-up roller will roll up the clogged filter cloth in the U-shaped filter box 2 to one side, while the unwind roller releases the unused new filter cloth. The new filter cloth moves along the inner wall of the U-shaped filter box 2, gradually replacing the old filter cloth.

[0054] Automatic flatness protection: During the movement of the filter cloth, the limiting shaft 5 is rotated, and the threaded protrusion 51 pushes the filter cloth to both sides to ensure that the new filter cloth fits the box wall without wrinkles.

[0055] Replacement complete: When the length of the old filter cloth wound up by the take-up roller is equal to the unfolded length of the inner wall of the U-shaped filter box 2, stop driving. At this time, the U-shaped filter box 2 has been completely replaced with new filter cloth. The whole process takes only 1-2 minutes, without stopping the machine or interrupting the filtration operation.

[0056] Filtration Operation Process

[0057] Taking industrial coal tar filtration as an example, the complete operation process is as follows:

[0058] Equipment preheating and inspection: Start the motor of the stirring assembly 4, test whether the stirring shaft 41 rotates smoothly, check whether the filter cloth 3 is attached to the inner wall of the U-shaped filter box 2, and turn off the motor after confirming that there are no abnormalities.

[0059] Feed filtration: Start the upstream coal tar conveying pump, and the coal tar is introduced into the U-shaped filter box 2 through the guide plate 6. At the same time, start the stirring component 4 at a speed of 15 r / min. Under the stirring of the elastic plate 42, the coal tar comes into uniform contact with the filter cloth 3. Impurities are intercepted by the filter cloth. The filtered clean coal tar is discharged from the bottom outlet (not shown) of the U-shaped filter box 2 and enters the subsequent storage tank.

[0060] Filter cloth rotation and continuous operation: After filtration for 1-2 hours, adjust the filter cloth according to the impurity content and replace it according to "3. Filter cloth replacement operation procedure". During this period, the conveying pump does not need to be stopped to ensure continuous filtration operation.

[0061] Cleaning after operation: Turn off the conveying pump and stirring motor. After the residual coal tar in the U-shaped filter box 2 is emptied, the take-up roller can be disassembled and the collected impurity filter cloth can be cleaned to complete the equipment cleaning.

[0062] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A coal tar filtration device that facilitates filter cloth replacement, characterized in that: include: Carrier box (1); The U-shaped filter box (2) is fixed inside the carrier box (1) and has the same opening direction as the carrier box (1); The filter cloth (3) is attached to the inner wall of the U-shaped filter box (2), with one side wound on the winding roller and the other side wound on the unwinding roller. A pair of stirring components (4) are located at two corners inside the U-shaped filter box (2) to limit the filter cloth (3); The stirring shaft (41) is rotatably connected inside the U-shaped filter box (2) and is perpendicular to the direction of movement of the filter cloth (3); The elastic plate (42) is fixed in a ring around the periphery of the stirring shaft (41). The side of the elastic plate (42) away from the stirring shaft (41) abuts against the filter cloth (3). When the side of the elastic plate (42) away from the stirring shaft (41) abuts against the filter cloth (3), the elastic plate (42) is in a bent state. in: During the rotation of the stirring shaft (41), at least one elastic plate (42) compresses the filter cloth (3) on the bottom surface of the U-shaped filter box (2), and at least one elastic plate (42) compresses the filter cloth (3) on the inner side wall of the U-shaped filter box (2).

2. The coal tar filtration apparatus with ease of replacement of filter cloth as claimed in claim 1 wherein: All the elastic plates (42) located on the stirring shaft (41) are arranged in a ring at equal intervals, and the side of the elastic plate (42) that contacts the filter cloth (3) is arc-shaped.

3. The coal tar filtration apparatus with ease of replacement of filter cloth as claimed in claim 2 wherein: It also includes a pair of limiting shafts (5), which are rotatably connected inside the U-shaped filter box (2), and the pair of limiting shafts (5) are respectively located above the stirring assembly (4).

4. The coal tar filtration apparatus with ease of replacement of filter cloth as claimed in claim 3 wherein: It also includes a threaded protrusion (51), which is symmetrically surrounding the periphery of the limiting shaft (5) along the center of the limiting shaft (5), and the threaded protrusion (51) and the filter cloth (3) are compressed together.

5. The coal tar filtration apparatus of claim 4, wherein: Two symmetrically distributed guide plates (6) are fixed at the opening of the carrier box (1), and the feed inlet formed by the two guide plates (6) is located directly above the U-shaped filter box (2).

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