A pulp filtering device for raw paper production

Abstract

The utility model discloses a kind of paper pulp filtering devices for raw paper production, it is related to the filtering technical field for raw paper production, including machine body, further include: install on the filtering component of machine body, filtering component is used to filter paper pulp;And, install on the anti-sticking component of machine body, anti-sticking component is used to prevent paper pulp from sticking filtering component;And, install on the linkage component of machine body, linkage component is used to drive anti-sticking component and auxiliary anti-sticking component, the scheme adopts magnetic attraction type detachable structure, without special tool, installation and disassembly can be completed, greatly shorten the time of filter screen replacement and depth cleaning.Sticking component can reduce manual cleaning frequency, reduce operator's labor intensity, while reducing the equipment downtime caused by disassembly cleaning, improve production continuity, while through the linkage action of structure, it can vibrate filter screen while driving nozzle moves, facilitate impurity cleaning, facilitate to improve paper pulp filtering efficiency.

Description

Technical Field

[0001] This utility model relates to the field of filtration technology for paper production, specifically a pulp filtration device for paper production. Background Technology

[0002] Pulp is a fibrous material made from plant fibers through various processing techniques. It can be classified in many ways: by processing method, it can be divided into mechanical pulp, chemical pulp, and chemimechanical pulp; by fiber source, it can be divided into wood pulp, straw pulp, hemp pulp, reed pulp, sugarcane pulp, bamboo pulp, rag pulp, etc.; and by purity and properties, it can be divided into refined pulp, bleached pulp, unbleached pulp, high-yield pulp, and semi-chemical pulp, etc. In applications, pulp is mainly used in the manufacture of paper and paperboard; refined pulp has a wider range of uses, not only for producing specialty papers but also as a core raw material for manufacturing cellulose esters, cellulose ethers, and other cellulose derivatives.

[0003] In the pulp production process, filtration and impurity removal are crucial steps in determining product quality, and the industry currently widely uses filter screens for impurity separation. However, over long-term operation, the trapped impurities in the filter screens gradually clog the filter pores, leading to a decrease in filtration efficiency. Traditional methods rely on manual cleaning, but this not only fails to completely remove impurities but also frequently interrupts the filtration process, significantly impacting overall production efficiency. Therefore, we propose a pulp filtration device for base paper production. Utility Model Content

[0004] The purpose of this invention is to provide a pulp filtration device for paper production to solve the problems mentioned in the background art.

[0005] The filter screen is efficiently cleaned and quickly replaced by a combination of filter components, anti-stick components, and linkage components, which solves the problem of low cleaning efficiency of traditional filter screens.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A pulp filtration device for paper production includes a machine body, and further includes: a filter component installed on the machine body for filtering pulp; an anti-sticking component installed on the machine body for preventing pulp from sticking to the filter component; and a linkage component installed on the machine body for driving the anti-sticking component and an auxiliary anti-sticking component.

[0008] Preferably, the anti-stick component includes a high-pressure water pump installed outside the machine body, the output end of the high-pressure water pump is fixedly connected to a connecting hose, the connecting hose passes through the machine body and is fixedly connected to a connecting spray pipe, and a nozzle is fixedly connected to the top of the connecting spray pipe.

[0009] Preferably, the linkage component includes a motor fixedly mounted on the machine body, the output end of the motor being fixedly connected to a lead screw via a coupling, an installation box being installed inside the machine body, and the other end of the lead screw being rotatably connected to the inner wall of the installation box.

[0010] Preferably, the lead screw is externally threaded with a slider, the slider is slidably connected to the mounting box, and the bottom of the slider is fixedly connected to a connecting block through the mounting box, the connecting block being connected to the connecting nozzle.

[0011] Preferably, the output end of the motor is fixedly connected to a drive wheel via a coupling, and a driven wheel is symmetrically rotatably connected to the outside of the machine body. The drive wheel and the driven wheel are synchronously provided with belts on their outsides, and cams are coaxially fixedly connected inside both driven wheels.

[0012] Preferably, the filter component includes mounting frames symmetrically installed inside the body, each mounting frame having a groove inside, and each groove having an electromagnetic suction device installed inside.

[0013] Preferably, a filter screen is detachably installed inside the mounting frame, and protrusions are symmetrically installed on the outside of the filter screen. A spring is fixedly connected to the bottom of each of the two protrusions, and a magnetic block that attracts electromagnetic attraction is installed at the bottom of the spring. The size of the protrusions corresponds to the grooves.

[0014] Preferably, a guide rod is installed at the bottom of the filter screen, the position of the guide rod corresponds to the cam, and the filter screen is located above the nozzle.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This invention employs a magnetic detachable structure, allowing for installation and disassembly without the need for special tools, significantly reducing the time required for filter replacement and deep cleaning. The anti-stick cleaning design reduces the frequency of manual cleaning, lowers the labor intensity of operators, and minimizes equipment downtime caused by disassembly and cleaning, improving production continuity. Furthermore, the structural linkage mechanism vibrates the filter screen while driving the nozzle movement, facilitating impurity removal and ultimately improving pulp filtration efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present utility model. Figure 1 ;

[0018] Figure 2 This is a schematic diagram of the overall structure of the present utility model. Figure 2 ;

[0019] Figure 3 This is a cross-sectional view of the overall structure of this utility model;

[0020] Figure 4 This is a front sectional view of the overall structure of this utility model;

[0021] Figure 5 This is a schematic diagram of the filter component structure of this utility model. Figure 1 ;

[0022] Figure 6 Schematic diagram of the filter component of this utility model Figure 2 ;

[0023] In the diagram: 1. Body; 2. Mounting box; 3. Lead screw; 4. Anti-stick component; 5. Linkage component; 6. Filter component; 7. High-pressure water pump; 8. Connecting nozzle; 9. Nozzle; 10. Connecting hose; 11. Mounting frame; 12. Groove; 13. Filter screen; 14. Protrusion; 15. Spring; 16. Electromagnetic suction; 17. Guide rod; 18. Motor; 19. Drive wheel; 20. Belt; 21. Driven wheel; 22. Cam; 23. Slider; 24. Connecting block. Detailed Implementation

[0024] 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.

[0025] Please see Figure 1-6 This utility model provides a technical solution: a pulp filtration device for paper production, including a body 1. The body 1 is made of high-strength stainless steel, which has excellent corrosion resistance and can effectively resist the long-term erosion of acidic substances in the pulp. At the same time, it has high structural strength and can withstand the internal pressure generated during the filtration process, extending the overall service life of the equipment. Symmetrical feed inlets are provided on the top of the body 1. The feed inlets adopt a symmetrical inclined design, and the opening edges are treated with arc transition to guide the pulp to flow smoothly into the body 1. The exterior of the body 1 is provided with a door panel, which can open the body 1. The contact part between the door panel and the body 1 is equipped with a high-temperature and corrosion-resistant sealing strip, which facilitates the opening of the body 1 for internal inspection and maintenance, and prevents pulp leakage during the filtration process. A valve is provided at the bottom. The device also includes: a filter component 6 installed on the body 1, which is used to filter the pulp; an anti-stick component 4 installed on the body 1, which is used to prevent the pulp from sticking to the filter component 6; and a linkage component 5 installed on the body 1, which is used to drive the anti-stick component 4 and the auxiliary anti-stick component 4.

[0026] Furthermore, the anti-sticking component 4 includes a high-pressure water pump 7 installed outside the machine body 1. The input end of the high-pressure water pump 7 is connected to a water tank, and the output end of the high-pressure water pump 7 is fixedly connected to a connecting hose 10. The connecting hose 10 is made of high-pressure resistant flexible rubber tubing with a wear-resistant coating on the inner layer, which can adapt to the movement requirements of the connecting nozzle 8 and prevent the tube from being damaged by the impact of high-pressure water flow. The connecting hose 10 passes through the machine body 1 and is fixedly connected to the connecting nozzle 8. The top of the connecting nozzle 8 is fixedly connected to a nozzle 9. The connecting nozzle 8 and the nozzle 9 adopt a composite structure of corrosion-resistant engineering plastic and stainless steel. The engineering plastic on the outer layer of the connecting nozzle 8 can reduce pulp adhesion, and the stainless steel on the inner layer enhances the pressure resistance and can adapt to the working pressure of the high-pressure water pump 7. The connecting nozzle 8 is a two-section type, connected in the middle by a stainless steel tube.

[0027] Meanwhile, the linkage component 5 includes a motor 18 fixedly installed on the machine body 1. The output end of the motor 18 is fixedly connected to a lead screw 3 via a coupling. An installation box 2 is installed inside the machine body 1. The other end of the lead screw 3 is rotatably connected to the inner wall of the installation box 2.

[0028] Furthermore, the lead screw 3 is externally threaded with a slider 23. The slider 23 is internally inlaid with a wear-resistant bushing to reduce mechanical wear during sliding. The slider 23 is slidably connected to the mounting box 2. The mounting box 2 can restrict the movement direction of the slider 23 to ensure its horizontal movement. The bottom of the slider 23 is fixedly connected to a connecting block 24 through the mounting box 2. The connecting block 24 is connected to the connecting nozzle 8. When filtering pulp, the connecting nozzle 8 is close to the inner wall of the machine body 1. The connecting nozzle 8 can be driven to move through the linkage component 5, so that the nozzle 9 can backwash the filter screen 13, thereby preventing pulp from sticking and clogging the filter screen 13, and also cleaning impurities.

[0029] Meanwhile, the output end of the motor 18 is fixedly connected to the drive wheel 19 via a coupling, and the driven wheel 21 is symmetrically rotated on the outside of the machine body 1. The drive wheel 19 and the driven wheel 21 are synchronously provided with belts 20 on their exteriors. The two driven wheels 21 are coaxially fixedly connected with cams 22, which are made of wear-resistant material.

[0030] Please see Figure 1-6 This utility model provides a technical solution: a pulp filtration device for paper production, wherein the filter component 6 includes mounting frames 11 symmetrically installed inside the machine body 1, and grooves 12 are provided inside the two mounting frames 11. Electromagnetic attractors 16 are installed inside the two grooves 12. The electromagnetic attractors 16 adopt a DC electromagnet structure, with stable attraction force and rapid response. The surface of the magnetic attractor block is magnetized and fits tightly with the adsorption surface of the electromagnetic attractor 16, ensuring that the filter screen 13 is firmly installed.

[0031] Furthermore, a filter screen 13 is detachably installed inside the mounting frame 11. Both the mounting frame 11 and the filter screen 13 are made of food-grade 304 stainless steel. The filter screen 13 is made by precision stamping, with uniform mesh and a pore size error controlled within a very small range. This ensures both filtration accuracy and good wear resistance, preventing mesh deformation due to long-term use. Symmetrically mounted protrusions 14 are installed on the outside of the filter screen 13. Springs 15 are fixedly connected to the bottom of each of the two protrusions 14. The springs 15 are made of high-elasticity alloy spring steel and have undergone tempering treatment, possessing good elastic recovery performance. They can provide stable buffering and restoring force when the filter screen 13 vibrates up and down, preventing damage to components caused by rigid collisions. A magnetic block that attracts the electromagnetic suction 16 is installed at the bottom of the spring 15. The size of the protrusion 14 corresponds to the groove 12.

[0032] It should be noted that a guide rod 17 is installed at the bottom of the filter screen 13. The guide rod 17 is made of solid alloy steel. One end is connected to the filter screen 13 through a high-strength thread. Anti-loosening washers are added to the connection part to prevent loosening caused by long-term vibration. The position of the guide rod 17 corresponds to the cam 22. The filter screen 13 is located above the nozzle 9. When the filter screen 13 needs to be installed, the protrusion 14 is aligned with the groove 12. Then, the magnetic block at the bottom of the spring 15 and the electromagnetic suction 16 are attracted to each other after being energized.

[0033] The filter screen 13 adopts a magnetic detachable structure, allowing for installation and removal without the need for special tools, significantly reducing the time required for filter screen 13 replacement and deep cleaning. The cleaning design of the linkage component 5 reduces the frequency of manual cleaning, lowers the labor intensity of operators, and minimizes equipment downtime caused by disassembly and cleaning, improving production continuity. The reverse flushing design precisely targets the surface of the filter screen 13, ensuring cleaning effectiveness while reducing water consumption and lowering production water costs. The efficient filtration and anti-clogging mechanism reduces pulp waste, improves raw material utilization, and indirectly reduces raw material costs in paper production. When deep cleaning or replacement of the filter screen 13 is required, first disconnect the power to the electromagnetic suction 16. After the magnetic force disappears, the spring 15 returns to its elastic deformation, pushing the protrusion 14 upwards, creating a gap between the filter screen 13 and the mounting frame 11. Then, simply pull the filter screen 13 upwards to remove the protrusion 14 from the groove 12, completing the disassembly of the filter screen 13. The operation is convenient and efficient.

[0034] The working principle of this device is as follows:

[0035] First, pre-power the electromagnetic suction 16 before installation to ensure its magnetic attraction function is normal. Align the protrusions 14 on both sides of the filter screen 13 with the grooves 12 inside the mounting frame 11, and slowly lower the filter screen 13 until the protrusions 14 are fully embedded in the grooves 12. At this time, the magnetic block at the bottom of the spring 15 contacts the electromagnetic suction 16, and the magnetic force generated by the electromagnetic suction 16 firmly attracts the magnetic block. The spring 15 is in a compressed state. Through the combined action of the magnetic force and the spring 15, the filter screen 13 is stably fixed in the mounting frame 11, completing the installation operation.

[0036] Secondly, the pulp flows into the machine body 1 through the symmetrical feed inlets at the top of the machine body 1. Under the action of gravity, it flows downward to the surface of the filter screen 13. The fine mesh of the filter screen 13 filters the pulp. The pulp that meets the requirements passes through the mesh and collects downward. Finally, it is discharged through the valve at the bottom of the machine body 1 and enters the subsequent production process. Impurities are intercepted on the surface of the filter screen 13 and continue to accumulate as the filtration process continues.

[0037] When impurities accumulate on the surface of the filter screen 13, affecting the filtration efficiency, the anti-clogging cleaning program is activated. The motor 18 synchronously drives the lead screw 3 to rotate and the drive wheel 19 to rotate: the rotation of the lead screw 3 drives the slider 23, which is threaded to it, to move horizontally along the slide rail inside the mounting box 2. The slider 23 drives the connecting nozzle 8 to move through the connecting block 24 until the nozzle 9 is precisely aligned with the area below the filter screen 13; at the same time, the high-pressure water pump 7 starts, pressurizes the clean water in the water tank, and delivers it to the connecting nozzle 8 through the connecting hose 10. After being atomized by the nozzle 9, it performs a reverse flushing of the filter screen 13, washing away the pulp and impurities attached to the surface of the filter screen;

[0038] Finally, the rotation of the drive wheel 19 drives the driven wheels 21 on both sides to rotate synchronously via the belt 20. The driven wheels 21 drive the coaxial cam 22 to rotate. During rotation, the cam 22 intermittently impacts the guide rod 17 at the bottom of the filter screen 13. The guide rod 17 transmits the impact force to the filter screen 13, causing the filter screen 13 to move vertically up and down within the groove 12. At this time, the spring 15 continuously extends and retracts with the movement of the filter screen 13, providing a restoring force to the filter screen 13, causing the filter screen 13 to vibrate at a high frequency and small amplitude. The backwash water flow and the vibration of the filter screen 13 work together to thoroughly remove the impurities clogging the mesh. The impurities are collected downwards with the wash water flow and discharged from the machine body 1 through the bottom valve.

[0039] The circuits and controls involved in this utility model are all existing technologies and will not be described in detail here.

[0040] It is understood that this utility model is described through some embodiments, and as those skilled in the art will know, various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, modifications to these features and embodiments can be made to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A pulp filtration device for paper production, comprising a body (1); Its features are, Also includes: A filter element (6) is installed on the machine body (1), the filter element (6) being used to filter the pulp; and, An anti-sticking component (4) is installed on the machine body (1), the anti-sticking component (4) being used to prevent pulp from sticking to the filter component (6); and, A linkage component (5) is installed on the body (1), the linkage component (5) is used to drive the anti-stick component (4) and the auxiliary anti-stick component (4).

2. The pulp filtration device for paper production according to claim 1, characterized in that: The anti-stick component (4) includes a high-pressure water pump (7) installed outside the body (1). The output end of the high-pressure water pump (7) is fixedly connected to a connecting hose (10). The connecting hose (10) passes through the body (1) and is fixedly connected to a connecting nozzle (8). The top of the connecting nozzle (8) is fixedly connected to a nozzle (9).

3. The pulp filtration device for paper production according to claim 1, characterized in that: The linkage component (5) includes a motor (18) fixedly installed on the machine body (1). The output end of the motor (18) is fixedly connected to a lead screw (3) through a coupling. An installation box (2) is installed inside the machine body (1). The other end of the lead screw (3) is rotatably connected to the inner wall of the installation box (2).

4. The pulp filtration device for paper production according to claim 3, characterized in that: The lead screw (3) is externally threaded with a slider (23), which is slidably connected to the mounting box (2). The bottom of the slider (23) is fixedly connected to a connecting block (24) through the mounting box (2), and the connecting block (24) is connected to the connecting nozzle (8).

5. A pulp filtration device for paper production according to claim 3, characterized in that: The output end of the motor (18) is fixedly connected to the drive wheel (19) via a coupling. The external body (1) is symmetrically connected to the driven wheel (21). The drive wheel (19) and the driven wheel (21) are synchronously provided with belts (20). The two driven wheels (21) are coaxially fixedly connected to cams (22).

6. A pulp filtration device for paper production according to claim 5, characterized in that: The filter component (6) includes mounting frames (11) symmetrically installed inside the body (1). Both mounting frames (11) have grooves (12) inside, and both grooves (12) are equipped with electromagnetic suction (16).

7. A pulp filtration device for paper production according to claim 6, characterized in that: The mounting frame (11) has a detachable filter screen (13) inside. The filter screen (13) has symmetrically mounted protrusions (14) on the outside. The bottom of each of the two protrusions (14) is fixedly connected to a spring (15). The bottom of the spring (15) is equipped with a magnetic block that attracts the electromagnetic suction (16). The size of the protrusion (14) corresponds to the groove (12).

8. A pulp filtration device for paper production according to claim 7, characterized in that: The bottom of the filter screen (13) is equipped with a guide rod (17), the position of which corresponds to the cam (22).

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