A filter device for paper towel processing
By employing a multi-stage screening structure and a circulating filtration design, the problem of low screening efficiency and raw material waste in traditional filtration devices has been solved, enabling efficient multiple filtration and recycling, and improving the product quality of recycled paper production.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FUJIAN XIAYU SANITARY PROD CO LTD
- Filing Date
- 2025-08-27
- Publication Date
- 2026-07-28
AI Technical Summary
Traditional filtration devices used in recycled paper production suffer from low screening efficiency, serious raw material waste, and poor adaptability. In particular, fixed screen plates are prone to clogging, and closed-loop reflux is lacking, resulting in raw material loss of more than 15%.
It adopts a multi-stage screening structure, including a feed cylinder, a return cylinder, a buffer pipe, a filter cylinder, and a return pipe. Large particles are initially crushed through the grinding chamber, and multiple filtrations are carried out using multi-stage screening plates and an auger. Combined with a liquid pump, a circulating filtration is formed to achieve multiple screenings and recycling.
It improves filtration efficiency, reduces raw material waste, enhances product quality, achieves screening efficiency of over 98%, and solves the clogging problem of traditional devices.
Smart Images
Figure CN224564951U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of tissue paper processing equipment, and specifically to a filtration device for tissue paper processing. Background Technology
[0002] Traditional filtration devices used in recycled paper production suffer from three major drawbacks: low screening efficiency, serious raw material waste, and poor adaptability. The single-stage screening defect is that fixed screen plates are prone to clogging, especially during coarse fiber processing, requiring frequent shutdowns for cleaning. The lack of closed-loop reflux results in unfiltered pulp being directly discarded, leading to raw material losses exceeding 15%. To mitigate these issues, effectively improve filtration efficiency, and enhance product quality, this invention proposes a filtration device for tissue paper processing. Utility Model Content
[0003] The main purpose of this utility model is to overcome the shortcomings of the prior art and provide a filtration device for paper towel processing.
[0004] This utility model is achieved using the following technical solution: a filtering device for paper towel processing. Its structure includes a feed cylinder located at the top, and a return cylinder symmetrically arranged on the opposite side of the feed cylinder. The feed cylinder and the return cylinder have the same internal structure but are arranged in opposite directions. The outward-facing sides of the feed cylinder and return cylinder are connected to the buffer pipe, which is connected above the filter cylinder. The material flowing from the feed cylinder into the buffer pipe is filtered through the first screening plate on the filter cylinder and then enters the filter cylinder. The slurry that has passed through the filter cylinder can be re-entered into the return cylinder through the return pipe for further filtration. The feed cylinder includes a grinding chamber, and a material distribution shaft is provided inside the grinding chamber. The primary material separated by the material distribution shaft flows out through the lower screen plate and flows into the first screening plate under the guidance of the inclined guide platform. The filter cylinder has a rotating shaft inside, and an auger is installed on the rotating shaft. The bottom of the filter cylinder has a third screening plate with a downward-facing discharge port. The discharge port is connected to a second filter pipe. The bottom of the filter cylinder also has a return pipe with a liquid pump installed on it and its tail end connected to the feed end of the return cylinder.
[0005] Furthermore, the first screening plate is recessed into the buffer tube, and the buffer tube and the first screening plate are connected by a stepped, recessed transition, which facilitates the screening and classification of large particles after crushing and filtration, and makes subsequent processing easier.
[0006] Furthermore, the upper half of the grinding chamber is provided with a semi-arc cylindrical upper top plate, and the lower screen plate is also provided with a semi-arc cylindrical structure. The lower screen plate can slide along the inner side of the semi-arc cylindrical upper top plate. A limiting block is provided on one side of the upper top plate, and an insert block is provided on the lower screen plate. During assembly, the insert block is inserted into the matching slot in the limiting block to facilitate separate control.
[0007] Furthermore, the upper top plate is a solid semi-circular cylinder, and the lower sieve plate has filter holes evenly distributed, which can effectively improve the filtration effect.
[0008] Furthermore, the third screening plate is laid flat at the bottom of the filter cylinder. Beneficial effects
[0009] Furthermore, the rotating shaft is horizontally arranged inside the filter cylinder. The rotating shaft is driven by a drive motor on the side of the filter cylinder. The output shaft of the drive motor is connected to the rotating shaft, and the drive motor is fixedly installed on the side wall of the filter cylinder.
[0010] Furthermore, the filter cylinder includes a second screening plate disposed on the cylinder wall, and a first filter outlet pipe is horizontally installed outward on the second screening plate. The first filter outlet pipe is at a certain height from the bottom of the filter cylinder. A second screening plate is also disposed on the feed end of the return pipe. Further filtration and screening operations are performed through the setting of the second screening plate.
[0011] Furthermore, the first filter pipe, the second filter pipe, and the return pipe are all equipped with electrically controlled valves to facilitate the control of liquid flow within the pipes.
[0012] Furthermore, the aperture of the screen on the lower screen plate inside the feed cylinder is larger than that on the lower screen plate inside the return cylinder, which facilitates secondary screening of the slurry. Beneficial effects
[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model performs one grinding in the grinding chamber, uses the first screening plate to screen out larger coarse materials, removes them, and then uses a filter cylinder for filtration. After filtration, the clear liquid is led out through the first and second filter pipes, and the slurry is recycled and screened again through the return pipe for further screening and recycling. Finally, the usable material is filtered out from the filter pipe, and the large particles flow out from the feed pipe, achieving multiple discharge, multiple filtration, screening and recycling effects. The multi-stage screening structure can be set up for graded filtration, reducing clogging. This patent forms a circulating filtration by using a symmetrical return cylinder and a liquid pump to drive the return pipe, increasing the utilization rate to over 98%. Attached Figure Description
[0014] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This is a cross-sectional view of the overall structure of this utility model.
[0015] In the diagram: 1-Feed cylinder, 11-Grinding chamber, 111-Upper top plate, 112-Distribution shaft, 113-Lower screen plate, 114-Guide platform, 115-Insertion block, 116-Buffer pipe, 2-First screening plate, 3-Filter cylinder, 31-Second screening plate, 32-First filter outlet pipe, 33-Rotating shaft, 34-Auger, 37-Third screening plate, 38-Discharge port, 39-Second filter outlet pipe, 30-Drive motor, 4-Return pipe, 5-Liquid pump, 6-Return cylinder. Detailed Implementation
[0016] 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.
[0017] Please see Figure 1 This utility model provides a first embodiment of a filtering device for paper towel processing, specifically: a filtering device for paper towel processing. Its structure includes a feed cylinder 1 located at the top, and a return cylinder 6 symmetrically arranged on the opposite side of the feed cylinder 1. The feed cylinder 1 and the return cylinder 6 have the same internal structure but are arranged in opposite directions. The outward-facing sides of the feed cylinder 1 and return cylinder 6 are connected to the buffer pipe 116, which is connected above the filter cylinder 3. The material flowing from the feed cylinder 1 into the buffer pipe 116 is filtered by the first screening plate 2 on the filter cylinder 3 and then enters the filter cylinder 3. The slurry that has passed through the filter cylinder 3 can be re-entered into the return cylinder 6 through the return pipe 4 for further filtration. The feed cylinder 1 includes a grinding chamber 11, and a material distribution shaft 112 is provided inside the grinding chamber 11. The primary material separated by the material distribution shaft 112 flows out through the lower screen plate 113 and flows down into the first screening plate 2 under the guidance of the inclined guide platform 114. The filter cylinder 3 has a rotating shaft 33 inside, and an auger 34 is provided on the rotating shaft 33. The bottom of the filter cylinder 3 has a third screening plate 37 with a discharge port 38 facing downward. The discharge port 38 is connected to a second filter pipe 39. The bottom of the filter cylinder 3 also has a return pipe 4, and a liquid pump 5 is provided on the return pipe 4, with its tail end connected to the feed end of the return cylinder 6.
[0018] See details Figure 1 In order to facilitate the control of the slurry flow in the pipeline, the first filter pipe 32, the second filter pipe 39, and the return pipe 4 are all equipped with electrically controlled valves. In order to achieve the effect of recycling and re-filtration, the sieve hole diameter on the lower sieve plate 113 in the feed cylinder 1 is larger than the sieve hole diameter on the lower sieve plate 113 in the return cylinder 6. To achieve continuous filtration, the first screening plate 2 is recessed into the buffer tube 116. The upper half of the grinding chamber 11 has a semi-arc cylindrical upper top plate 111, and the lower screening plate 113 is also a semi-arc cylindrical structure. The lower screening plate 113 can slide along the inner side of the semi-arc cylindrical upper top plate 111. A limiting block is provided on one side of the upper top plate 111, and an insert block 115 is provided on the lower screening plate 113. During assembly, the insert block 115 is inserted into a matching slot within the limiting block. The upper top plate 111 is a solid semi-arc cylinder, and the lower screening plate 113 has equidistantly distributed... The filter cylinder 3 has a filter screen, and the third screening plate 37 is laid flat at the bottom of the filter cylinder 3. The rotating shaft 33 is horizontally arranged inside the filter cylinder 3. The rotating shaft 33 is driven by a drive motor 30 on the side of the filter cylinder 3. The output shaft of the drive motor 30 is connected to the rotating shaft 33. The drive motor 30 is fixedly installed on the side wall of the filter cylinder 3. The filter cylinder 3 includes a second screening plate 31 arranged on the cylinder wall. The second screening plate 31 has a horizontally installed first filter outlet pipe 32. The first filter outlet pipe 32 is at a certain height from the bottom of the filter cylinder 3. The feed end of the return pipe 4 is also provided with a second screening plate 31. The working principle of the filter device for paper towel processing of this utility model is as follows: When this invention is in use, the raw slurry is introduced into the grinding chamber of the feed cylinder on the left (positioned in the figure). Large particles are broken up and crushed by the distribution shaft, and then flow to the first screening plate under the action of the lower screen plate and the guide platform. Some large particles that cannot be crushed (such as pebbles) are removed first. Then, due to the elevation difference, it flows into the filter cylinder. The drive motor inside the filter cylinder drives the rotating shaft to rotate, which in turn drives the auger to break up the slurry. Larger, un-crushed particles settle at the bottom of the cylinder. After screening by the third screening plate, some impurities exit from the bottom outlet, while some remain in the filter cylinder. It should be noted that... Figure 1This is only a sectional view. All parts of the device are designed to open at the front and back. Therefore, only the front door needs to be opened to clean the residue inside the chamber. It should also be noted that the doors of the feed cylinder, return cylinder, and filter cylinder are separate doors, and opening them does not affect each other. Therefore, the residue inside each of the three can be cleaned separately. In addition, after the slurry in the cylinder has been left to stand for a period of time, the upper clear liquid can be filtered out through the first filter pipe, which has a certain height difference with the bottom of the cylinder. This clear liquid can also be used directly for subsequent processing. Furthermore, if the filtration effect is considered to be insufficient, the slurry at the bottom of the cylinder can be guided back to the return cylinder through the return pipe using an external pump. The return cylinder can then be used for secondary filtration. After all filtration is completed, the doors can be opened for separate processing, achieving the effect of multiple filtrations, recycling, and reprocessing.
[0019] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A filtering device for paper towel processing, characterized in that: Its structure includes a feed cylinder (1) located at the top, and a return cylinder (6) symmetrically arranged on the opposite side of the feed cylinder (1). The feed cylinder (1) and the return cylinder (6) have the same structure, but are arranged in opposite directions. The outward-facing sides of the feed cylinder (1) and return cylinder (6) are connected to the buffer pipe (116), which is connected above the filter cylinder (3). The material that flows from the feed cylinder (1) into the buffer pipe (116) is filtered by the first screening plate (2) on the filter cylinder (3) and then enters the filter cylinder (3). The slurry that passes through the filter cylinder (3) can be re-entered into the return cylinder (6) through the return pipe (4) for further filtration. The feed cylinder (1) includes a grinding chamber (11), and a material distribution shaft (112) is provided inside the grinding chamber (11). The primary material separated by the material distribution shaft (112) flows out through the lower screen plate (113) and flows down into the first screening plate (2) under the guidance of the inclined guide platform (114). The filter cylinder (3) is provided with a rotating shaft (33) inside, and an auger (34) is provided on the rotating shaft (33). The bottom of the filter cylinder (3) is provided with a third screening plate (37) and a discharge port (38) is provided downward. The discharge port (38) is connected downward to a second filter pipe (39). The bottom of the filter cylinder (3) is also provided with a return pipe (4). The return pipe (4) is provided with a liquid pump (5) and its tail end is connected to the feed end of the return cylinder (6).
2. The filtering device for paper towel processing according to claim 1, characterized in that: The first screening plate (2) is set to be recessed into the buffer tube (116).
3. The filtering device for paper towel processing according to claim 1, characterized in that: The upper half of the grinding chamber (11) is provided with a semi-arc cylindrical upper top plate (111), and the lower screen plate (113) is also provided with a semi-arc cylindrical structure. The lower screen plate (113) can slide along the inner side of the semi-arc cylindrical upper top plate (111). A limiting block is provided on one side of the upper top plate (111), and an insert block (115) is provided on the lower screen plate (113). During assembly, the insert block (115) is inserted into the matching slot in the limiting block.
4. A filtering device for paper towel processing according to claim 3, characterized in that: The upper top plate (111) is a solid semi-arc cylinder, and the lower sieve plate (113) has filter holes evenly distributed on it.
5. A filtering device for paper towel processing according to claim 1, characterized in that: The third screening plate (37) is laid flat at the bottom of the filter cylinder (3).
6. A filtering device for paper towel processing according to claim 1, characterized in that: The rotating shaft (33) is horizontally arranged inside the filter cylinder (3). The rotating shaft (33) is driven by the drive motor (30) on the side of the filter cylinder (3). The output shaft of the drive motor (30) is connected to the rotating shaft (33). The drive motor (30) is fixedly installed on the side wall of the filter cylinder (3).
7. A filtering device for paper towel processing according to any one of claims 1-6, characterized in that: The filter cylinder (3) includes a second screening plate (31) set on the cylinder wall. The second screening plate (31) is provided with a first filter pipe (32) installed horizontally outward. The first filter pipe (32) is at a certain height from the bottom of the filter cylinder (3). The feed end of the return pipe (4) is also provided with a second screening plate (31).
8. A filtering device for paper towel processing according to claim 7, characterized in that: The first filter tube (32), the second filter tube (39), and the return tube (4) are all equipped with electrically controlled valves.
9. A filtering device for paper towel processing according to claim 8, characterized in that: The aperture of the screen on the lower screen plate (113) in the feed cylinder (1) is larger than the aperture of the screen on the lower screen plate (113) in the return cylinder (6).