A waste paper recycling paper-plastic separation device

Abstract

This invention provides a waste paper recycling and paper-plastic separation device, belonging to the technical field of pulp separation equipment. It includes a separation device, a separation chamber, a pulp filtration chamber, a filter plate, and filter holes. Multiple deformation grooves are formed around the circumference of the filter holes, creating multiple movable parts. A bracket is installed inside the pulp filtration chamber, and multiple electromagnet modules are mounted on the bracket to create multiple arc-shaped magnetic fields on the outer side of the filter plate. This invention, by creating multiple deformation grooves around the filter holes, forms multiple elastically deformable movable parts. Simultaneously, electromagnet modules that can reciprocate along the length of the filter plate are arranged on the outer side. The magnetic field generated by the electromagnet modules can generate a magnetic attraction force on the movable parts, causing them to deform towards the electromagnet modules. This increases the inner diameter of the filter holes, allowing clogged materials to be discharged, achieving a cleaning effect.

Description

Technical Field

[0001] This invention belongs to the technical field of pulp separation equipment, specifically referring to a waste paper recycling and paper-plastic separation device. Background Technology

[0002] Paper-plastic separators are key resource recycling equipment specifically designed for processing paper-plastic composite materials, such as various cartons, packaging bags, labels, and industrial scraps. Their main function is to efficiently separate paper fibers from plastic layers (commonly polyethylene and polypropylene) in waste materials through physical and mechanical means, allowing the pulp and plastic to be recycled and reused in the production process.

[0003] Currently, these types of equipment generally employ physical separation processes based on mechanical forces such as crushing, friction, and scouring. A typical process includes: first, coarsely or finely crushing the material; then, separating the paper-plastic interface through methods such as stirring, pushing, or hydraulic impact; subsequently, classifying and purifying the mixture using processes such as screening, washing, and centrifugation to ultimately obtain clean pulp and plastic granules. Among these, horizontal paper-plastic separators are widely used in waste paper packaging recycling production lines due to their compact structure, large processing capacity, and ability to achieve continuous feeding and separation.

[0004] However, in actual operation, screen clogging is the most common problem in horizontal paper-plastic separators. Some plastic and paper fibers in the material fail to separate completely, forming large or complex-shaped plastic sheets, films, and adhesive clumps. Secondly, insufficient water supply during operation leads to increased slurry concentration and decreased fluidity in the tank, making it easier for fibers and impurities to adhere and accumulate on the screen surface. Furthermore, grease, adhesives, and fine particles (such as short fibers and fillers) in the material also exacerbate screen clogging. Once clogging occurs, the machine needs to be stopped, the screens disassembled for cleaning, or even replaced, resulting in a decrease in the overall separation efficiency of the equipment. Summary of the Invention

[0005] In view of the above situation and to overcome the defects of the prior art, the purpose of the present invention is to provide a waste paper recycling paper-plastic separation device to at least partially solve the problems mentioned in the background art.

[0006] The technical solution adopted by this invention is as follows: This invention proposes a waste paper recycling and paper-plastic separation device, comprising: A separation device having a separation chamber and a pulp filtration chamber inside, wherein the pulp filtration chamber is located below the separation chamber; A filter plate is disposed within the separation device and located between the separation chamber and the pulp filtration chamber. The filter plate has a plurality of filter holes evenly distributed on it. The filter hole has multiple evenly distributed deformation grooves around its perimeter, which makes the perimeter of the filter hole have multiple movable parts that can elastically deform. The pulp filtration chamber is equipped with an arc-shaped bracket that matches the shape of the filter plate, and the bracket is located on the outside of the filter plate. Multiple electromagnet modules are installed on the bracket along its arc direction, so that multiple arc-shaped magnetic fields are formed on the outside of the filter plate. The bracket is configured to reciprocate along the axial direction of the filter plate.

[0007] Furthermore, a drive unit is installed inside the separation device, and the bracket is connected to the conveying end of the drive unit. The drive unit is configured to drive the bracket to reciprocate along the axial direction of the filter plate.

[0008] Furthermore, the drive unit includes a lead screw, a transmission block, and a motor. The lead screw is arranged parallel to the axial direction of the filter plate. The transmission block is drivenly connected to the lead screw, and one side of the bracket is connected to the transmission block. The output shaft of the motor is connected to the lead screw.

[0009] Furthermore, a support rod is provided on the side of the bracket away from the drive unit, and the support rod is arranged parallel to the axial direction of the filter plate. A connecting sleeve is slidably sleeved on the support rod, and the bracket is connected to the connecting sleeve.

[0010] Furthermore, the length of the support rod is greater than or equal to the length of the lead screw.

[0011] Furthermore, the bracket is equipped with multiple electric heating modules arranged along its arc direction, so that multiple arc-shaped vortex heating zones are formed on the outer side of the filter plate.

[0012] Furthermore, the bottom of the separation device is connected to a pulp discharge pipe that communicates with the pulp filtration chamber and is used to discharge pulp.

[0013] Furthermore, a three-way valve is connected to the slurry discharge pipe, and a return pipe is connected to the slurry discharge pipe through the three-way valve. The return pipe extends to connect with an external collection device.

[0014] Furthermore, a delivery pump is connected to the return pipe.

[0015] Beneficial effects: 1. By opening multiple deformation grooves around the filter holes, multiple movable parts that can elastically deform are formed around the filter holes. At the same time, an electromagnet module that can reciprocate along the length of the filter plate is set on the outside of the filter plate. The magnetic field generated by the electromagnet module can generate a magnetic attraction force on the movable parts, causing the movable parts to deform in the direction of the electromagnet module, thereby increasing the inner diameter of the filter holes and allowing the blockage material in the filter holes to be discharged, achieving the cleaning effect without disassembling the filter plate.

[0016] 2. By setting an electric heating module on the outside of the filter plate that can reciprocate along the length of the filter plate, multiple arc-shaped vortex heating zones are formed on the outside of the filter plate. The electric heating module rapidly heats the filter plate with vortex, thereby softening the adhesive in the filter holes and increasing its fluidity so that it can be easily removed when the inner diameter of the filter holes increases, thus improving the cleaning effect of the filter holes. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a waste paper recycling and paper-plastic separation device according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the filter plate and bracket in a waste paper recycling and paper-plastic separation device according to an embodiment of the present invention; Figure 3 This is a schematic diagram showing the installation positions of the electromagnet module and the electric heating module in a waste paper recycling and paper-plastic separation device according to an embodiment of the present invention. Figure 4 This is a schematic diagram of the filter pore structure in a waste paper recycling and paper-plastic separation device according to an embodiment of the present invention; Figure 5 This is a schematic diagram illustrating the state of the moving part being magnetically deformed in a waste paper recycling and paper-plastic separation device according to an embodiment of the present invention. Figure 6 This is a schematic diagram showing the connection between the discharge pipe and the return pipe in a waste paper recycling and paper-plastic separation device according to an embodiment of the present invention.

[0018] The components include: 1. Separation device; 101. Separation chamber; 102. Pulp filtration chamber; 2. Filter plate; 201. Filter hole; 202. Deformation groove; 21. Moving part; 3. Bracket; 31. Electromagnet module; 32. Electric heating module; 4. Drive unit; 41. Lead screw; 42. Transmission block; 43. Motor; 5. Support rod; 51. Connecting sleeve; 6. Pulp discharge pipe; 61. Three-way valve; 62. Return pipe; 7. Conveying pump.

[0019] The accompanying drawings are provided to further understand the embodiments and form part of the specification. They are used together with the embodiments for explanation and do not constitute a limitation on the embodiments. Detailed Implementation

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection.

[0021] In the description of the embodiments, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments.

[0022] Combination Figure 1 As shown, this embodiment of the invention provides a waste paper recycling paper-plastic separation device, including a separation device 1, a filter plate 2, a separation chamber 101 and a pulp filtration chamber 102.

[0023] The separation device 1 is provided with a separation chamber 101 and a pulp filtration chamber 102, with the pulp filtration chamber 102 located below the separation chamber 101. The filter plate 2 is disposed in the separation device 1 and located between the separation chamber 101 and the pulp filtration chamber 102. Multiple filter holes 201 are evenly distributed on the filter plate 2.

[0024] The material to be separated is mixed with water and fed into the separation chamber 101. After separation, it is filtered through the filter holes 201 of the filter plate 2, and the pulp falls into the pulp filtration chamber 102.

[0025] In a specific embodiment, a rotor is installed in the separation chamber 101. The rotor is equipped with conveying blades and separating blades. The rotor is driven to rotate by an external drive device. When the rotor rotates at high speed, the separating blades stir the mixture of material and water, causing the paper and plastic to separate. The paper and water mix to form a pulp with good fluidity. The pulp falls into the pulp filtration chamber 102 through the filter holes 201 of the filter plate 2, while the plastic is continued to be conveyed by the conveying blades on the rotor and discharged from the plastic discharge port.

[0026] Combination Figure 4 As shown, multiple evenly distributed deformation grooves 202 are formed around the filter hole 201, resulting in multiple elastically deformable movable parts 21 around the filter hole 201. When the movable parts 21 deform, the inner diameter of the filter hole 201 can increase (e.g., Figure 5 (As shown).

[0027] Combination Figure 2 and Figure 3 As shown, an arc-shaped bracket 3 adapted to the shape of the filter plate 2 is installed in the pulp filtration chamber 102, and the bracket 3 is located on the outside of the filter plate 2. Multiple electromagnet modules 31 arranged along its arc direction are installed on the bracket 3, so that multiple arc-shaped magnetic fields are formed on the outside of the filter plate 2. The magnetic field can generate magnetic attraction force on the movable part 21, causing the movable part 21 to deform in the direction of the electromagnet module 31, thereby increasing the inner diameter of the filter hole 201.

[0028] Furthermore, the bracket 3 is configured to reciprocate along the axial direction of the filter plate 2, so that the magnetic field generated by the electromagnet module 31 can sequentially generate magnetic attraction force on all the movable parts 21 on the filter plate 2, and with the reciprocating movement of the bracket 3, the movable parts 21 can be magnetically deformed multiple times.

[0029] Thus, when the filter holes 201 on the filter plate 2 become clogged, the bracket 3 moves back and forth along the axis of the filter plate 2, and at the same time, the electromagnet module 31 is activated. The magnetic field generated by the electromagnet module 31 can sequentially generate magnetic attraction force on all the movable parts 21 on the filter plate 2, causing the movable parts 21 to deform in the direction of the electromagnet module 31, thereby increasing the inner diameter of the filter holes 201. The clogged material in the filter holes 201 can be discharged, thus playing a cleaning role. By moving the bracket 3 back and forth, the movable parts 21 can be magnetically deformed multiple times, and the inner diameter of the filter holes 201 increases multiple times, improving the cleaning effect of the filter holes 201. Moreover, the cleaning process does not require disassembling the filter plate 2.

[0030] It should be noted that the filter plate 2 is made of spring steel, which has good elastic recovery ability. When attracted by a magnetic field, the movable part 21 can deform and the inner diameter of the filter hole 201 increases. When not attracted by a magnetic field, the movable part 21 can return to its original shape, and correspondingly, the inner diameter of the filter hole 201 can also return to its original shape.

[0031] Combination Figure 2 and Figure 3 As shown, a drive unit 4 is installed inside the separation device 1, and the bracket 3 is connected to the conveying end of the drive unit 4. The drive unit 4 is configured to drive the bracket 3 to reciprocate along the axial direction of the filter plate 2.

[0032] In a specific embodiment, the drive unit 4 includes a lead screw 41, a transmission block 42, and a motor 43. The lead screw 41 is arranged parallel to the axial direction of the filter plate 2. Both ends of the lead screw 41 are rotatably connected to the housing of the separation device 1. The inner side of the transmission block 42 is provided with a threaded hole that matches the lead screw 41. The transmission block 42 is drivenly connected to the lead screw 41, and one side of the bracket 3 is connected to the transmission block 42. The motor 43 is installed on the outer side of the housing of the separation device 1, and the output shaft of the motor 43 is connected to the lead screw 41.

[0033] Thus, the motor 43 drives the lead screw 41 to rotate, and under the action of the screw thread, the transmission block 42 can move along the axial direction of the lead screw 41 and pull the bracket 3 to move synchronously. Furthermore, by controlling the rotation direction of the motor 43, the lead screw 41 can rotate forward or backward, thereby enabling the transmission block 42 to move back and forth along the axial direction of the lead screw 41. Correspondingly, the bracket 3 can move back and forth along the axial direction of the filter plate 2, so that the electromagnet module 31 on the bracket 3 can sequentially generate magnetic attraction force on all the moving parts 21 on the filter plate 2.

[0034] Combination Figure 2 and Figure 3 As shown, a support rod 5 is provided on the side of the bracket 3 away from the drive unit 4. The two ends of the support rod 5 are connected to the housing of the separation device 1, and the support rod 5 is arranged parallel to the axial direction of the filter plate 2. A connecting sleeve 51 is slidably sleeved on the support rod 5, and the bracket 3 is connected to the connecting sleeve 51. The support rod 5 provides auxiliary support for the bracket 3, thereby improving the stability of the bracket 3.

[0035] Furthermore, the length of the support rod 5 is greater than or equal to the length of the lead screw 41, so that when the bracket 3 moves along the lead screw 41, the support rod 5 can provide auxiliary support for the bracket 3 throughout the entire process, avoiding the situation where the range of movement of the bracket 3 is limited due to insufficient length of the support rod 5.

[0036] Combination Figure 3 As shown, the bracket 3 is equipped with multiple electric heating modules 32 arranged along its arc direction, so that multiple arc-shaped vortex heating zones are formed on the outer side of the filter plate 2. The electric heating modules 32 are used to rapidly heat the filter plate 2 with vortex, thereby softening the adhesive in the filter hole 201 and increasing its fluidity, so that it can be easily detached when the inner diameter of the filter hole 201 increases, thereby improving the cleaning effect of the filter hole 201.

[0037] It should be noted that the electric heating module 32 is an electromagnetic eddy current heating device, which uses electromagnetic eddy currents to quickly heat the filter plate 2 and raise its temperature.

[0038] The bottom of the separation device 1 is connected to a pulp discharge pipe 6 that communicates with the pulp filtration chamber 102. After the pulp falls into the pulp filtration chamber 102, it is discharged through the pulp discharge pipe 6.

[0039] Furthermore, a three-way valve 61 is connected to the slurry discharge pipe 6, and a return pipe 62 is connected to the slurry discharge pipe 6 through the three-way valve 61. The return pipe 62 extends to communicate with the separation chamber 101. The three-way valve 61 can be switched to connect the slurry discharge pipe 6 with the return pipe 62, or it can be switched to not connect the slurry discharge pipe 6 with the return pipe 62.

[0040] During normal filtration, the three-way valve 61 is switched so that the discharge pipe 6 and the return pipe 62 are not connected. At this time, the pulp in the separation chamber 101 is directly discharged through the discharge pipe 6. When cleaning the filter hole 201, the three-way valve 61 is switched so that the discharge pipe 6 and the return pipe 62 are connected. This allows the blockage that falls into the separation chamber 101 to flow back to the external collection device through the discharge pipe 6 and the return pipe 62, thus preventing the blockage from mixing with the pulp.

[0041] Furthermore, a delivery pump 7 is connected to the return pipe 62 to deliver the blockage.

[0042] The working principle of this invention is as follows: The material to be separated and water are mixed and fed into the separation chamber 101. A rotor is installed in the separation chamber 101. The rotor is equipped with conveying blades and separating blades. When the rotor rotates at high speed, the separating blades stir the mixture of material and water, causing the paper and plastic to separate. The paper and water are mixed to form a pulp with good fluidity. The pulp falls into the pulp filtration chamber 102 through the filter holes 201 of the filter plate 2, while the plastic is continued to be conveyed by the conveying blades on the rotor and discharged from the plastic discharge port.

[0043] When the filter holes 201 on the filter plate 2 become clogged, the bracket 3 moves back and forth along the axis of the filter plate 2, and at the same time, the electromagnet module 31 is activated. The magnetic field generated by the electromagnet module 31 can sequentially generate magnetic attraction force on all the moving parts 21 on the filter plate 2, causing the moving parts 21 to deform in the direction of the electromagnet module 31, thereby increasing the inner diameter of the filter holes 201. The clogged material in the filter holes 201 can be discharged, thus playing a cleaning role. By moving the bracket 3 back and forth, the moving parts 21 can be magnetically deformed multiple times, and correspondingly, the inner diameter of the filter holes 201 increases multiple times, improving the cleaning effect of the filter holes 201.

[0044] While the electromagnet module 31 is turned on, the electric heating module 32 is also turned on, so that multiple arc-shaped eddy current heating zones are formed on the outer side of the filter plate 2. The electric heating module 32 is used to rapidly heat the filter plate 2 with eddy currents, thereby softening the adhesive in the filter holes 201 and increasing its fluidity, so that it can be easily detached when the inner diameter of the filter holes 201 increases, thus improving the cleaning effect of the filter holes 201.

[0045] During normal filtration, the three-way valve 61 is switched so that the discharge pipe 6 and the return pipe 62 are not connected. At this time, the pulp in the separation chamber 101 is directly discharged through the discharge pipe 6. When cleaning the filter hole 201, the three-way valve 61 is switched so that the discharge pipe 6 and the return pipe 62 are connected. This allows the blockage that falls into the separation chamber 101 to flow back to the external collection device through the discharge pipe 6 and the return pipe 62, thus preventing the blockage from mixing with the pulp.

[0046] In summary, by creating multiple deformation grooves 202 around the filter hole 201, multiple movable parts 21 capable of elastic deformation are formed around the filter hole 201. At the same time, an electromagnet module 31 capable of reciprocating along the length of the filter plate 2 is provided on the outside of the filter plate 2. The magnetic field generated by the electromagnet module 31 can generate a magnetic attraction force on the movable parts 21, causing the movable parts 21 to deform in the direction of the electromagnet module 31, thereby increasing the inner diameter of the filter hole 201 and allowing the blocked material inside the filter hole 201 to be discharged, thus achieving the cleaning effect.

[0047] By setting an electric heating module 32 on the outside of the filter plate 2, which can reciprocate along the length of the filter plate 2, multiple arc-shaped vortex heating zones are formed on the outside of the filter plate 2. The electric heating module 32 is used to rapidly heat the filter plate 2 with vortex, thereby softening the adhesive in the filter hole 201 and increasing its fluidity, so that it can be easily detached when the inner diameter of the filter hole 201 increases, thus improving the cleaning effect of the filter hole 201.

[0048] By setting up a three-way valve 61 and a return pipe 62, during normal filtration, the three-way valve 61 is switched to the point where the discharge pipe 6 and the return pipe 62 are not connected. At this time, the pulp in the separation chamber 101 is directly discharged through the discharge pipe 6. When cleaning the filter holes 201, the three-way valve 61 is switched to the point where the discharge pipe 6 and the return pipe 62 are connected, so that the blockage that falls into the separation chamber 101 flows back to the external collection equipment through the discharge pipe 6 and the return pipe 62, thus avoiding the blockage from mixing with the pulp.

[0049] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0050] The embodiments have been described above, and such description is not restrictive. The figures shown are only one embodiment, and the actual structure is not limited to this. In short, if a person skilled in the art is inspired by this description and designs a similar structure and embodiment without departing from the inventive spirit, such design should fall within the scope of protection.

Claims

1. A waste paper recycling and paper-plastic separation device, characterized in that, include: The separation device (1) has a separation chamber (101) and a pulp filtration chamber (102) inside, and the pulp filtration chamber (102) is located below the separation chamber (101); A filter plate (2) is disposed in the separation device (1) and located between the separation chamber (101) and the pulp filtration chamber (102). A plurality of filter holes (201) are evenly distributed on the filter plate (2). The filter hole (201) has multiple uniformly distributed deformation grooves (202) around its perimeter, so that multiple movable parts (21) capable of elastic deformation are formed around the filter hole (201). The pulp filtration chamber (102) is equipped with an arc-shaped bracket (3) that is adapted to the shape of the filter plate (2), and the bracket (3) is located on the outside of the filter plate (2). Multiple electromagnet modules (31) are installed on the bracket (3) along its arc direction, so that multiple magnetic fields distributed in an arc shape are formed on the outside of the filter plate (2). The bracket (3) is configured to reciprocate along the axial direction of the filter plate (2).

2. The waste paper recycling and paper-plastic separation equipment according to claim 1, characterized in that: The separation device (1) is equipped with a drive unit (4), and the bracket (3) is connected to the conveying end of the drive unit (4). The drive unit (4) is configured to drive the bracket (3) to reciprocate along the axial direction of the filter plate (2).

3. The waste paper recycling and paper-plastic separation equipment according to claim 2, characterized in that: The drive unit (4) includes a lead screw (41), a transmission block (42) and a motor (43). The lead screw (41) is arranged parallel to the axial direction of the filter plate (2). The transmission block (42) is connected to the lead screw (41) and one side of the bracket (3) is connected to the transmission block (42). The output shaft of the motor (43) is connected to the lead screw (41).

4. The waste paper recycling and paper-plastic separation equipment according to claim 3, characterized in that: The bracket (3) is provided with a support rod (5) on the side away from the drive unit (4), and the support rod (5) is arranged parallel to the axial direction of the filter plate (2). A connecting sleeve (51) is slidably sleeved on the support rod (5), and the bracket (3) is connected to the connecting sleeve (51).

5. The waste paper recycling and paper-plastic separation equipment according to claim 4, characterized in that: The length of the support rod (5) is greater than or equal to the length of the lead screw (41).

6. The waste paper recycling and paper-plastic separation equipment according to claim 1, characterized in that: The bracket (3) is equipped with multiple electric heating modules (32) arranged along its arc direction, so that multiple arc-shaped vortex heating zones are formed on the outer side of the filter plate (2).

7. The waste paper recycling and paper-plastic separation equipment according to claim 1, characterized in that: The bottom of the separation device (1) is connected to a pulp discharge pipe (6) that communicates with the pulp filter chamber (102) and is used to discharge pulp.

8. The waste paper recycling and paper-plastic separation equipment according to claim 7, characterized in that: A three-way valve (61) is connected to the slurry discharge pipe (6), and a return pipe (62) is connected to the slurry discharge pipe (6) through the three-way valve (61). The return pipe (62) extends to connect with an external collection device.

9. The waste paper recycling and paper-plastic separation equipment according to claim 8, characterized in that: A delivery pump (7) is connected to the return pipe (62).

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