A filter device for a sanitary paper machine

Abstract

The application discloses a filter device for a toilet paper machine, and particularly relates to the toilet paper filter technical field, which comprises a paper machine frame, a press frame and a filter, one end of the filter is provided with a pulp inlet communicated with the inside of the filter, the inside of the filter is provided with a filter screen, and a pulp filtering assembly for rapidly filtering the pulp is arranged between the filter and the filter screen, the pulp filtering assembly comprises a conical column screen plate frame and a guide scraping frame which are respectively arranged in the filter; the conical column screen plate frame is inserted into the mesh hole of the filter screen from the side of the filter screen after filtering, the impurities and fiber bundles which are stuck in the mesh hole are pushed out reversely, the accumulation and blockage of the impurities and fiber bundles in the mesh hole are avoided, the method can effectively maintain the permeability of the filter screen, guarantees the filtering efficiency of the pulp, and prevents the filtering speed from being reduced due to the blockage.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of toilet paper filtering, in particular to a filtering device for a toilet paper machine. BACKGROUND

[0002] The toilet paper machine is a professional mechanical equipment for producing toilet paper, and its basic structure includes a net part, a pressing part, a drying part, a winding part and the like. The raw material pulp for papermaking contains various impurities, such as wood chips, sand, undecomposed fiber bundles and other inorganic impurity particles. If these impurity particles follow the pulp into the toilet paper machine, they will destroy the uniform distribution of paper fibers when forming in the net part, resulting in quality problems such as holes and weak points in the paper, which affects the quality of the toilet paper. The filtering device can intercept these impurities through the filter screen and other components, so that the pulp entering the toilet paper machine is pure, and the uniform texture can be ensured. Since the impurity particles are generally filtered by filter elements that move horizontally during filtering, when the impurity particles come into contact with the filter screen that moves horizontally, they can only rely on the gravity of the material and the impurity particles themselves to pass through the filter element. In the whole process, there is a lack of other forces to promote the passage of the material. The impurity particles are likely to accumulate on the filter element during the filtering process. With the passage of time and the continuous progress of the filtering work, the number of accumulated impurity particles will increase, and the thickness will also increase, resulting in that the subsequent material can only partially or incompletely contact the filter screen, so that the original interception function of the filter screen cannot be fully played, and the filtering effect of the toilet paper and the impurity particles is affected. SUMMARY

[0003] The purpose of the present application is to provide a filtering device for a toilet paper machine to solve the above technical deficiencies.

[0004] In order to achieve the above purpose, the present application provides the following technical scheme: a filtering device for a toilet paper machine, comprising a paper machine frame, a press frame and a filter, one end of the filter is provided with a pulp inlet communicated with the inside of the filter, the inside of the filter is provided with a filter screen, a rapid filtering pulp assembly is arranged between the filter and the filter screen for rapidly filtering the pulp, the rapid filtering pulp assembly comprises a conical column screen plate frame and a guide scraping frame respectively installed in the filter, and the conical column screen plate frame and the guide scraping frame are located on both sides of the filter screen, a torsion plate frame is installed in the filter, and the torsion plate frame is used to drive the conical column screen plate frame to change from vertical movement to horizontal movement in the filter, a horizontal lifting assembly is arranged between the filter and the guide scraping frame for moving along one side of the filter screen and lifting upward, a hovering assembly is arranged between the filter and the guide scraping frame for cleaning the guide scraping frame, and a same-position pushing assembly is arranged between the filter and the conical column screen plate frame and the hovering assembly for connection.

[0005] Preferably, the top end of the conical-cylindrical net frame is fixedly connected with a connecting seat, the top end of the connecting seat is provided with a guide column, the top end of the torsion frame is provided with a displacement hole for the movement of the guide column, and the guide column and the torsion frame are used to stably move the conical-cylindrical net frame in the filter.

[0006] Preferably, the same-position pushing and winding assembly comprises a torsion seat fixedly connected to the top of the conical-cylindrical net frame and a connecting arm movably connected to one side of the torsion seat, one side of the connecting arm is fixedly connected with a connecting shaft column, the connecting shaft column is movably connected to the inside of the filter, one end of the connecting shaft column penetrates through the filter and is provided with a lever arm, the top of the lever arm is movably connected with a displacement rod, one end of the displacement rod away from the lever arm is movably sleeved with a connecting frame, the connecting frame is provided in a U-shaped structure, the outside of the filter is fixedly connected with a servo motor, and the servo motor is used to drive the connecting frame to rotate.

[0007] Preferably, the horizontal lifting assembly comprises a concentric column fixedly connected to the top end of the guide scraping frame, and the guide scraping frame is kept in an inclined state between the concentric column and the filter screen through the concentric column, the outside of the filter is fixedly connected with a displacement frame, one side of the displacement frame is movably connected with a horizontal moving frame, and the horizontal moving frame and the filter are jointly connected with an electric push rod, and the electric push rod is used to push the horizontal moving frame to move.

[0008] Preferably, one side of the displacement frame is provided with a horizontal sliding groove and a vertical sliding groove for guiding the movement of the concentric column, and the horizontal sliding groove and the vertical sliding groove are communicated with each other, one side of the horizontal moving frame is provided with an inclined lifting groove, and the lifting groove is used to drive the concentric column to move slowly along the inside thereof, one end of the concentric column extends to the outside of the lifting groove and is fixedly connected with an inclined horizontal scraping plate, and the horizontal scraping plate is attached to one side of the filter screen.

[0009] Preferably, the hovering assembly comprises a sliding table frame fixedly connected to the side of the filter close to the guide scraping frame and a sleeve frame movably sleeved with the sleeve frame outside the sliding table frame, a plurality of cleaning rollers are fixedly connected to the side of the sleeve frame close to the guide scraping frame, and the plurality of cleaning rollers are attached to one side of the guide scraping frame.

[0010] Preferably, the sleeve frame and the sliding table frame are jointly connected with a return spring, and the return spring is used to stably move and reset the sleeve frame along the outside of the sliding table frame, one side of the sleeve frame away from the cleaning rollers is fixedly connected with a pushing block, and the pushing block is provided in a semicircular structure.

[0011] Preferably, the inside of the filter is rotatably connected with two symmetrical rotating discs, one end of one of the rotating discs extends to the outside of the filter and is fixedly connected to one side of the connecting frame, a plurality of supports are jointly connected between the two rotating discs, the lengths of the plurality of supports are different, a horizontal column is jointly connected between two supports, and the outside of one of the horizontal columns abuts against the outside of the pushing block.

[0012] In the above technical solutions, the present application provides technical effects and advantages:

[0013] The conical column net plate frame is inserted into the mesh hole of the filter screen from the side filtered by the filter screen, can push out the impurities, fiber bundles and the like stuck in the mesh hole in the reverse direction, avoids the accumulation and blockage of the impurities in the mesh hole, and can effectively maintain the permeability of the filter screen, ensure the filtering efficiency of the paper pulp and prevent the filtering speed from being reduced due to the blockage.

[0014] The conical column net plate frame is inserted into the mesh hole of the filter screen from the side filtered by the filter screen, can push out the impurities, fiber bundles and the like stuck in the mesh hole in the reverse direction, avoids the accumulation and blockage of the impurities in the mesh hole, and can effectively maintain the permeability of the filter screen, ensure the filtering efficiency of the paper pulp and prevent the filtering speed from being reduced due to the blockage.

[0015] The conical column net plate frame is inserted into the mesh hole of the filter screen from the side filtered by the filter screen, can push out the impurities, fiber bundles and the like stuck in the mesh hole in the reverse direction, avoids the accumulation and blockage of the impurities in the mesh hole, and can effectively maintain the permeability of the filter screen, ensure the filtering efficiency of the paper pulp and prevent the filtering speed from being reduced due to the blockage.

[0016] The conical column net plate frame is inserted into the mesh hole of the filter screen from the side filtered by the filter screen, can push out the impurities, fiber bundles and the like stuck in the mesh hole in the reverse direction, avoids the accumulation and blockage of the impurities in the mesh hole, and can effectively maintain the permeability of the filter screen, ensure the filtering efficiency of the paper pulp and prevent the filtering speed from being reduced due to the blockage.

[0017] The present application reduces the number of impurity particles adsorbed on one side of the guide scraping frame, thereby creating more favorable conditions for the cleaning operation of the guide scraping frame, and under the assistance of such good conditions, the guide scraping frame can more easily and efficiently clean the impurity particles on the surface of the filter screen, so that the filter screen can always maintain stable filtering precision, so that the filter screen can accurately and effectively intercept various impurities mixed in the paper pulp, thereby effectively ensuring the quality of the filtered paper pulp.

[0018] The present application sets the conical column net plate frame, horizontal column, support and filter screen, when the conical column net plate frame pushes the filtered paper pulp to gradually approach the filter screen, the filtered paper pulp will form a force near the filter surface of the filter screen based on the action of the reverse thrust, at the same time, the to-be-filtered paper pulp will produce small amplitude vibration under the circulation influence of the slight pressure difference formed on both sides of the filter screen, and this process will also cooperate with the disturbance of the horizontal column to the paper pulp at the front end of the filter screen, the paper pulp can be evenly dispersed again, thereby making the paper pulp flow to the filter screen more evenly and smoothly, so that the entire filtering area of the filter screen can be fully utilized, avoiding the situation that some parts are overloaded while other parts are idle, causing impurities to accumulate in a certain place of the filter screen, making the mesh hole of the place be quickly blocked, thereby accelerating the overall filtration speed of the paper pulp and improving the filtration efficiency.

[0019] The present application sets the horizontal column and the support, so that the horizontal column keeps stepwise rotation in the filter, and the stepwise disturbance makes the paper pulp maintain a hierarchical uniform dispersion state in the process of flowing to the filter screen, further preventing the paper pulp from rapidly accumulating in some local areas of the filter screen, causing the situation that some areas are overloaded while other areas are not fully utilized, and accelerating the filtration efficiency.

[0020] The present application sets the cleaning roller, horizontal column, pushing block, guide scraping frame, horizontal sliding groove and vertical sliding groove, the movement of the sleeve frame drives the cleaning roller to move synchronously, so that the cleaning roller and the guide scraping frame moving downward keep an interleaved state, such interleaved state can make the cleaning roller and one side of the guide scraping frame form more contact surfaces, thereby promoting the impurities on one side of the guide scraping frame to be in a dynamic dispersion state, and finally achieving the effect of reducing the aggregation of impurity particles on the surface of the filter screen, which helps to maintain the filtering performance of the filter screen and ensure the smooth progress of the entire filtration process. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments or the prior art, the following will briefly introduce the drawings needed in the embodiments. Obviously, the drawings described below are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art based on these drawings.

[0022] Figure 1 Fig. 1 is a schematic diagram of the overall structure of the paper machine frame of the present application;

[0023] Figure 2 Fig. 2 is a schematic diagram of the structure of the conical-cylindrical screen frame in the first movement state in the filter of the present application;

[0024] Figure 3 Fig. 3 is a schematic diagram of the structure of the guide and scraping frame of the present application;

[0025] Figure 4 Fig. 4 is an enlarged view of the local structure at A in the present application; Figure 3

[0026] Figure 5 Fig. 5 is a schematic diagram of the structure of the flat scraping plate of the present application;

[0027] Figure 6 Fig. 6 is a schematic diagram of the structure of the flat lifting assembly of the present application;

[0028] Figure 7 Fig. 7 is a schematic diagram of the structure of the horizontal column and the pushing block pushing upward of the present application;

[0029] Figure 8 Fig. 8 is a schematic diagram of the structure of the conical-cylindrical screen frame in the second movement state in the filter of the present application;

[0030] Figure 9 Fig. 9 is a schematic diagram of the structure of the conical-cylindrical screen frame in the third movement state in the filter of the present application.

[0031] Explanation of reference numerals:

[0032] 1, paper machine frame; 11, press frame; 12, filter; 13, pulp inlet; 14, filter screen;

[0033] 2, pulp passing assembly; 21, conical-cylindrical screen frame; 22, connecting seat; 23, torsion frame; 24, displacement hole; 25, linking ring; 26, guide displacement column; 27, guide and scraping frame;

[0034] 3, same-position pushing assembly; 31, torsion seat; 32, linking arm; 33, linking shaft column; 34, lever arm; 35, displacement rod; 36, linking frame; 37, servo motor;

[0035] 4, flat lifting assembly; 41, flat displacement frame; 42, electric push rod; 43, vertical sliding groove; 44, displacement frame; 45, horizontal sliding groove; 46, flat scraping plate; 47, concentric column; 48, lifting displacement groove; 49, centering groove;

[0036] 5, hovering assembly; 51, rotating disc; 52, support; 53, horizontal column; 54, sliding frame; 55, sleeve frame; 56, return spring; 57, cleaning roller; 58, pushing block. DETAILED DESCRIPTION ​

[0037] In order to make the technical personnel in the art better understand the technical solutions of the present application, the present application will be further described in detail below with reference to the drawings.

[0038] The present application provides a filter device for a toilet paper machine as shown in Figure 1 , Figure 2 , Figure 8 and Figure 9 The filter device for a toilet paper machine comprises a paper machine frame 1, a press frame 11 and a filter 12, one end of the filter 12 is provided with a pulp inlet 13 communicating with the inside of the filter 12, the inside of the filter 12 is provided with a filter screen 14, a pulp filtering assembly 2 for quickly filtering the pulp is arranged between the filter 12 and the filter screen 14, the pulp filtering assembly 2 comprises a conical column screen plate frame 21 and a guide scraping frame 27 which are respectively arranged in the filter 12, and the conical column screen plate frame 21 and the guide scraping frame 27 are located on both sides of the filter screen 14, a torsion plate frame 23 is arranged in the inside of the filter 12, and the torsion plate frame 23 is used to drive the conical column screen plate frame 21 to change from vertical movement to horizontal movement in the filter 12:

[0039] The top end of the conical column screen plate frame 21 is fixedly connected with a connecting seat 22, the top end of the connecting seat 22 is provided with a guide column 26, the top end of the torsion plate frame 23 is provided with a displacement hole 24 for the movement of the guide column 26, and the guide column 26 and the torsion plate frame 23 are used to stably move the conical column screen plate frame 21 in the filter 12, and the torsion plate frame 23 and the filter 12 are jointly connected with a connecting ring 25;

[0040] Reference Figure 1 , Figure 2 , Figure 8 and Figure 9 The side of the conical column screen plate frame 21 is provided with a wedge-shaped column, the inlet is narrow and the outlet is wide, so that it can be more stably inserted into the mesh hole of the filter screen 14, and in the case of continuous deepening, the outside of the conical column screen plate frame 21 slowly contacts the filter screen 14 and completes the through-hole operation, the special shape of the conical column screen plate frame 21 makes it easy to enter the mesh hole but difficult for impurities to come out in reverse after the through-hole, has good self-cleaning ability, and to some extent reduces the occurrence of the blocking phenomenon of the filter screen 14.

[0041] Reference Figure 5 , Figure 6 and Figure 8As shown, the filter 12 and the guide scraper frame 27 are provided with a horizontal lifting assembly 4 for moving along one side of the filter screen 14 and lifting upward, the horizontal lifting assembly 4 includes a concentric column 47 fixedly connected to the top end of the guide scraper frame 27, and the guide scraper frame 27 is kept in an inclined state through the concentric column 47 and the filter screen 14, the outside of the filter 12 is fixedly connected with a displacement frame 44, one side of the displacement frame 44 is movably connected with a horizontal sliding frame 41, and the horizontal sliding frame 41 is connected with the filter 12 through an electric push rod 42, and the electric push rod 42 is used to push the horizontal sliding frame 41 to move;

[0042] One side of the displacement frame 44 is provided with a horizontal sliding groove 45 and a vertical sliding groove 43 for guiding the movement of the concentric column 47, and the horizontal sliding groove 45 and the vertical sliding groove 43 are communicated, one side of the horizontal sliding frame 41 is provided with an inclined lifting groove 48, and the lifting groove 48 is used to drive the concentric column 47 to move slowly along the inside, one end of the concentric column 47 extends to the outside of the lifting groove 48 and is fixedly connected with an inclined horizontal scraper plate 46, and the horizontal scraper plate 46 is attached to one side of the filter screen 14.

[0043] Reference Figure 3 , Figure 4 and Figure 7 As shown, the filter 12 and the pulp inlet 13 are provided with a hovering assembly 5 for cleaning the guide scraper frame 27, the hovering assembly 5 includes a sliding table frame 54 fixedly connected to the side of the filter 12 close to the guide scraper frame 27, and a sleeve frame 55 movably sleeved on the outside of the sliding table frame 54, the sleeve frame 55 is fixedly connected with a plurality of cleaning rollers 57 on the side close to the guide scraper frame 27, and the plurality of cleaning rollers 57 are attached to one side of the guide scraper frame 27;

[0044] The sleeve frame 55 and the sliding table frame 54 are jointly connected with a return spring 56, and the return spring 56 is used to stably move and reset the sleeve frame 55 along the outside of the sliding table frame 54, the side away from the cleaning roller 57 of the sleeve frame 55 is fixedly connected with a pushing block 58, and the pushing block 58 is provided as a semicircular structure, the inside of the filter 12 is rotatably connected with two symmetrical rotating discs 51, and one end of one of the rotating discs 51 extends to the outside of the filter 12 and is fixedly connected to one side of the linking frame 36, a plurality of supports 52 are jointly connected between the two rotating discs 51, and the lengths of the plurality of supports 52 are different, a horizontal column 53 is jointly connected between the two supports 52, and the outside of one of the horizontal columns 53 abuts against the outside of the pushing block 58;

[0045] Reference Figure 3 , Figure 4 and Figure 7As shown, one of the rotating disks 51 and the servo motor 37 are respectively installed on both sides of the opening of the connecting frame 36, so that one of the rotating disks 51 and the servo motor 37 are kept in a horizontal state, ensuring that the connecting frame 36 can drive one of the rotating disks 51 to move along the inner circumference of the filter 12 during rotation; and several brackets 52 and crossbars 53 are set in four groups, and the four groups are arranged in a circular array between the two rotating disks 51, and the length of each group of brackets 52 is different, so that the four groups of brackets 52 are set in a stepped rotation mode inside the filter 12.

[0046] refer to Figure 2 , Figure 8 and Figure 9 As shown, a co-positioning push-winding assembly 3 is provided between the filter 12, the cone column mesh plate frame 21, and the suspension assembly 5 for connection. The co-positioning push-winding assembly 3 includes a torsion seat 31 fixedly connected to the top of the cone column mesh plate frame 21 and a connecting arm 32 movably connected to one side of the torsion seat 31. A connecting shaft 33 is fixedly connected to one side of the connecting arm 32, and the connecting shaft 33 is movably connected inside the filter 12. One end of the connecting shaft 33 passes through the filter 12 and is equipped with a lever arm 34. A displacement rod 35 is movably connected to the top of the lever arm 34. A connecting frame 36 is movably sleeved at the end of the displacement rod 35 away from the lever arm 34, and the connecting frame 36 is designed as a U-shaped structure. A servo motor 37 is fixedly connected to the outside of the filter 12, and the servo motor 37 is used to drive the connecting frame 36 to rotate.

[0047] Working principle:

[0048] When using;

[0049] refer to Figure 1 and Figure 2 As shown, when it is necessary to clean the impurity particles accumulated on the surface of the filter screen 14 to ensure that the pulp can smoothly adhere to the surface of the filter screen 14 and thus complete efficient filtration, firstly, the filter screen 14 plays its separating role, effectively separating the pulp raw materials in the paper machine frame 1. Then, the pulp inlet 13 starts to operate, which cleverly guides the external pulp raw materials so that they can be discharged into the interior of the filter 12 in an orderly manner. During this process, as the external pulp raw materials continuously flow into the interior of the filter 12, the pulp originally present in the filter 12 can always maintain good fluidity. Driven by the continuous influx of pulp, the pulp flows steadily in the direction of the filter screen 14, and the filter screen 14 effectively blocks and filters the pulp and the impurity particles mixed in it, allowing the pure pulp to pass through smoothly and then flow into the interior of the press frame 11.

[0050] refer to Figure 2 , Figure 8 and Figure 9As shown, immediately after, under the driving action of the servo motor 37, the interface frame 36 is driven to start moving synchronously, the interface frame 36 will move along one side of the filter 12 in a circular motion, and its angle will change accordingly with its rotation. Due to the rotation of the interface frame 36, a pulling force is generated to pull the displacement rod 35 to move. At this time, the displacement rod 35 will tilt and displace along one side of the filter 12, and a slight swing will occur between the other end of the displacement rod 35 and the lever arm 34. This swing in turn pulls the lever arm 34 to displace synchronously. Subsequently, the top of the lever arm 34 will move along one side of the filter 12 under the influence of the movement of the displacement rod 35, and will also make a downward movement. Immediately after, this movement of the lever arm 34 will drive the interface shaft column 33 to start rotating along the inside of the filter 12. With the rotation of the interface shaft column 33, the interface arm 32 will also move along the inside of the filter 12 in an arc motion under its driving. Due to the arc motion of the interface arm 32, the torsion seat 31 will move along the inside of the filter 12 under the driving of the interface arm 32. The movement of the torsion seat 31 will further drive the conical column mesh plate frame 21 and the connecting seat 22 to move upward synchronously. In the process of the movement of the connecting seat 22, the guide location column 26 will also move along the guide inside the displacement hole 24. Immediately after, under the condition that the interface arm 32 moves in an arc motion, the guide location column 26 will form a resistance with the inside of the displacement hole 24, thereby generating an inclination. This inclination will make the torsion plate frame 23 and the interface ring 25 displace synchronously, so as to ensure that the inside of the displacement hole 24 and the outside of the guide location column 26 always maintain a corresponding state. In addition, the inclination of the guide location column 26 will also drive the conical column mesh plate frame 21 and the torsion seat 31 to incline synchronously, so that the torsion seat 31 and the interface arm 32 gradually change from the original vertical state to a corresponding state.

[0051] Reference Figure 2 , Figure 8 and Figure 9As shown, at the same time, in the continuous movement of the connecting arm 32, it drives the torsion seat 31 to slowly move along one side of the filter 12 towards the filter screen 14. During the movement, the inclined state of the torsion seat 31 gradually changes to a horizontal state. Correspondingly, the conical column screen plate frame 21 also keeps a horizontal corresponding state with the filter screen 14 under the action of the torsion seat 31. Then, the displacement hole 24 and the guide displacement column 26 also keep a horizontal correspondence with the filter screen 14. Finally, under the movement of the torsion seat 31, the conical column screen plate frame 21 moves horizontally towards the outside of the filter screen 14. During this process, the movement state of the conical column screen plate frame 21 changes smoothly from vertical to horizontal. After the conical column screen plate frame 21 changes to a horizontal state, it also keeps a certain floating distance with the filter screen 14. At this time, the movement of the conical column screen plate frame 21 drives the guide displacement column 26 to continuously move along the inside of the displacement hole 24, so that one side of the conical column screen plate frame 21 can be stably inserted into the mesh of the filter screen 14, thereby creating favorable conditions for subsequent impurity cleaning and smooth filtration of the paper pulp.

[0052] Referring to Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, when the conical column screen plate frame 21 reciprocates between the filter screen 14 and is away from the filter screen 14, and at this time, cleaning work needs to be carried out on the filter surface of the filter screen 14, first, the telescopic action of the electric push rod 42 drives the translation frame 41 to move along one side of the displacement frame 44. During the movement of the translation frame 41, the displacement groove 48 is synchronously displaced. With the change of the position of the displacement groove 48, its inside will form a resistance with the outside of the concentric column 47, thereby driving the concentric column 47 to start moving downward along the inside of the vertical sliding groove 43. Under the action of the downward movement of the concentric column 47, the flat scraping plate 46 and the guide scraping frame 27 will synchronously displace downward along the two sides of the filter screen 14. In this way, the flat scraping plate 46 and the guide scraping frame 27 can form more contact surfaces with the two sides of the filter screen 14, which lays a good foundation for subsequent cleaning work. Then, with the continuous pushing of the displacement groove 48, the concentric column 47 will be pushed to the joint with the horizontal sliding groove 45 along the inside of the vertical sliding groove 43. Under such joint state, due to the movement of the translation frame 41 and the further pushing action of the displacement groove 48, the concentric column 47 will start to move horizontally along the inside of the horizontal sliding groove 45. With the horizontal movement of the concentric column 47, the flat scraping plate 46 and the guide scraping frame 27 will also move correspondingly along the inside of the centering groove 49. Finally, the flat scraping plate 46 and the guide scraping frame 27 can clean the two sides of the filter screen 14 by moving themselves, thereby effectively removing impurities attached to the filter surface of the filter screen 14, and ensuring the good play of the filtering performance.

[0053] Reference Figure 3 、 Figure 4 and Figure 7 As shown in FIGS. 27, 36, and 51, during the cleaning process of the guide scraper 27 on the filtering surface of the filter screen 14, the guide scraper 27 first starts to move downward along one side of the filter screen 14. During this process, the guide scraper 27 and the filter screen 14 present a specific inclined state, and the distance between them is just enough to allow several cleaning rollers 57 to be inserted therebetween. As the guide scraper 27 continues to move downward, it gradually comes into contact with the outside of the several cleaning rollers 57, which can play a role of scraping one side of the guide scraper 27. Through scraping, the number of impurity particles adsorbed on one side of the guide scraper 27 can be effectively reduced, thereby creating more favorable conditions for the cleaning work of the guide scraper 27. With the help of such good conditions, the guide scraper 27 can more easily and efficiently clean the impurity particles on the surface of the filter screen 14, so that the filter screen 14 can always maintain stable filtering precision. In this way, the filter screen 14 can accurately and effectively intercept various impurities mixed in the paper pulp, thereby effectively ensuring the quality of the filtered paper pulp.

[0054] Reference Figure 3 、 Figure 4 and Figure 7 As shown in FIGS. 27, 36, and 51, during the cleaning process of the guide scraper 27 on the filtering surface of the filter screen 14, the guide scraper 27 first starts to move downward along one side of the filter screen 14. During this process, the guide scraper 27 and the filter screen 14 present a specific inclined state, and the distance between them is just enough to allow several cleaning rollers 57 to be inserted therebetween. As the guide scraper 27 continues to move downward, it gradually comes into contact with the outside of the several cleaning rollers 57, which can play a role of scraping one side of the guide scraper 27. Through scraping, the number of impurity particles adsorbed on one side of the guide scraper 27 can be effectively reduced, thereby creating more favorable conditions for the cleaning work of the guide scraper 27. With the help of such good conditions, the guide scraper 27 can more easily and efficiently clean the impurity particles on the surface of the filter screen 14, so that the filter screen 14 can always maintain stable filtering precision. In this way, the filter screen 14 can accurately and effectively intercept various impurities mixed in the paper pulp, thereby effectively ensuring the quality of the filtered paper pulp.

[0055] Reference Figure 3 、 Figure 4 and Figure 7As shown, in this process, the guide scraper 27 is moving downward along one side of the filter screen 14, and the contact state between the guide scraper 27 and the cleaning roller 57 also changes accordingly. With the continuous rotation of one of the horizontal columns 53, the horizontal column 53 will be in contact with the outside of the pushing block 58, and then push the pushing block 58 to move upward. Under the pushing action, the sleeve frame 55 will move upward along the outside of the sliding frame 54, and the reset spring 56 between the sliding frame 54 and the sleeve frame 55 will be compressed. Then, with the movement of the sleeve frame 55, the cleaning roller 57 will move synchronously, so that the cleaning roller 57 and the guide scraper 27 moving downward can keep an interleaved state. This interleaved state can make the cleaning roller 57 and the guide scraper 27 form more contact surfaces, so as to make the impurities on one side of the guide scraper 27 in a dynamic dispersion state, and finally achieve the effect of reducing the aggregation of impurity particles on the surface of the filter screen 14, which is helpful to maintain the filtering performance of the filter screen 14 and ensure the smooth progress of the whole filtering process.

[0056] The above describes certain exemplary embodiments of the present application by way of illustration only, and it is needless to say that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present application. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of the claims of the present application.

Claims

1. A filtering device for a tissue paper machine, comprising a paper machine frame, a press frame, and a filter, wherein one end of the filter is fitted with a pulp inlet communicating with its interior, and a filter screen is installed inside the filter, characterized in that: A pulp-passing assembly for rapid pulp filtration is provided between the filter and the filter screen. The pulp-passing assembly includes a conical screen frame and a guide scraper respectively installed inside the filter, with the conical screen frame and guide scraper located on both sides of the filter screen. A torsion plate frame is installed inside the filter, and the torsion plate frame is used to drive the conical screen frame to change from vertical movement to horizontal movement within the filter. A lifting assembly for moving along one side of the filter screen and lifting upwards is provided between the filter and the guide scraper. A suspension assembly for cleaning the guide scraper is provided between the filter and the pulp inlet. A co-positioning push-winding assembly for connection is provided between the filter, the conical screen frame, and the suspension assembly. The top of the cone column mesh plate frame is fixedly connected to a connecting seat, and the top of the connecting seat is equipped with a guide post. The top of the torsion plate frame is provided with a displacement hole for the guide post to move. The guide post and the torsion plate frame are used to stabilize the cone column mesh plate frame inside the filter. The torsion plate frame and the filter are connected by a connecting ring. The co-positioning push-winding assembly includes a torsion seat fixedly connected to the top of the conical column mesh plate frame and a connecting arm movably connected to one side of the torsion seat. A connecting shaft is fixedly connected to one side of the connecting arm, and the connecting shaft is movably connected inside the filter. One end of the connecting shaft passes through the filter and is equipped with a lever arm. A displacement rod is movably connected to the top of the lever arm. A connecting frame is movably sleeved at the end of the displacement rod away from the lever arm, and the connecting frame is designed as a U-shaped structure. A servo motor is fixedly connected to the outside of the filter, and the servo motor is used to drive the connecting frame to rotate.

2. A filtering device for a toilet paper machine according to claim 1, characterized in that: The lifting assembly includes a concentric column fixedly connected to the top of the guide scraper, and the guide scraper is kept in an inclined state with the filter screen through the concentric column. A displacement frame is fixedly connected to the outside of the filter, and a translation frame is movably connected to one side of the displacement frame. An electric push rod is connected between the translation frame and the filter, and the electric push rod is used to push the translation frame to move.

3. A filtering device for a toilet paper machine according to claim 2, characterized in that: The displacement frame has a horizontal sliding groove and a vertical sliding groove on one side for guiding the movement of the concentric column, and the horizontal sliding groove and the vertical sliding groove are connected internally. The translation frame has an inclined lifting groove on one side, and the lifting groove is used to drive the concentric column to move slowly along its interior. One end of the concentric column extends to the outside of the lifting groove and is fixedly connected to an inclined flat scraper, and the flat scraper is in contact with one side of the filter screen.

4. A filtering device for a toilet paper machine according to claim 1, characterized in that: The hovering assembly includes a slide frame fixedly connected to the side of the filter near the guide scraper and a sleeve sleeve slidably sleeved on the outside of the slide frame. Several cleaning rollers are fixedly connected to the side of the sleeve sleeve near the guide scraper, and the several cleaning rollers are attached to one side of the guide scraper.

5. A filtering device for a toilet paper machine according to claim 4, characterized in that: A return spring is connected between the sleeve and the slide frame, and the return spring is used to stabilize and reset the sleeve along the outside of the slide frame. A push block is fixedly connected to the side of the sleeve away from the cleaning roller, and the push block is set as a semi-arc structure.

6. A filtering device for a toilet paper machine according to claim 5, characterized in that: The filter has two symmetrical rotating disks inside, one end of which extends to the outside of the filter and is fixedly connected to one side of the connecting frame. Several supports are connected between the two rotating disks, and the supports are of different lengths. A horizontal column is connected between the two supports, and the outside of one of the horizontal columns abuts against the outside of the push block.

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