CN104831570B - A waste paper-plastic composite material paper-plastic separation production system and separation method - Google Patents

Abstract

The invention discloses a waste paper-plastic composite material paper-plastic separation production system and a waste paper-plastic composite material paper-plastic separation method, and belongs to the technical field of waste paper-plastic composite material treatment. The invention relates to a waste paper-plastic composite material paper-plastic separation production system, which comprises a paper-plastic separation device and a paper pulp treatment device after paper-plastic separation, wherein the paper-plastic separation device comprises a feeding hole, a material pushing mechanism, a material extruding device and a friction mechanism; the paper pulp treatment device after paper-plastic separation comprises a paper pulp impurity removing mechanism and a paper pulp extruding mechanism; the paper pulp extruding mechanism comprises a feed chute, a feed guiding plate, a material collecting box, power equipment, a support, a water collecting tank and extruding equipment; the extrusion equipment is fixed on the support of the frame-shaped structure, and the water collecting tank is arranged at the bottom of the extrusion equipment. The invention realizes the purposes of improving the production efficiency by separating the waste paper and the plastic from the composite material of the waste paper and the plastic, being suitable for any waste paper and plastic composite material classified in China and recycling water resources through the steps of separating the paper and the plastic → removing impurities from the paper pulp, standing and precipitating the paper pulp, extruding the paper pulp, compressing and packaging the plastic sheets and the like.

Description

A waste paper-plastic composite material paper-plastic separation production system and separation method

technical field

The invention relates to the technical field of processing waste paper-plastic composite materials, in particular to a paper-plastic separation production system and a separation method for waste paper-plastic composite materials.

Background technique

With the rapid development of our country's economy, most of the packaging materials are made of various types of plastic films on cartons, which are printed and laminated. Paper-plastic composite materials are used. Applied to food packaging, the reuse of waste generated after being used has always been a big trouble that is difficult to deal with. Paper-coated and plastic-coated materials such as milk carton wrapping paper, coated paper, and PP bag labels must be removed during production or after use. Separated completely from plastic, otherwise it cannot be recycled.

The recycling and reuse of waste paper-plastic composite materials is an important way to regenerate resources, but due to the different properties of paper and plastic, this material cannot be directly processed and recycled: the first reason is that paper bags can be degraded, but plastics cannot be degraded; the second reason is that It is plastic that can be regenerated and granulated, but paper bags cannot be regenerated and granulated. If left untreated, both will cause environmental pollution and waste resources. To recycle, the paper and plastic must be separated first, and then processed separately. At present, the separation of paper and plastic in the market adopts the method of direct heating, and then manual tearing. There is a risk of burns in this method, and the separation is not complete, so that the performance of the product reproduced by using the recycled material in this method is greatly reduced, the labor intensity is high, and the efficiency is low. The previous wet processing method mainly relied on the impact force of water and the separation of humidity, the pulp could not be collected, and it occupied a large area; in order to separate the plastic skin and wood pulp fibers, most of the traditional pulpers used long-term and fully soaked pulp. method, but it is easy to cause waste and pollution of water resources, and the efficiency is not high.

At present, there are also paper-plastic separation systems imported from developed countries. As we all know, developed countries have a high degree of refinement in waste classification, and this paper-plastic separation system in developed countries selects different separation systems for processing according to different subdivided wastes. Domestic waste classification is still relatively extensive, most cities only use binary classification, and waste paper-plastic composite materials that can be recycled are often mixed with other materials, resulting in the import of paper-plastic separation systems in developed countries. The treatment of paper-plastic composite materials is not acclimatized: one is that the production efficiency is low due to the small feeding port; the other is that there are many other impurities in the waste paper-plastic composite materials, which often cause it to stop; many garbage disposal factories spend high A large number of imported paper-plastic separation systems purchased by foreign exchange are idle.

Chinese patent application number: 201020605314.1, publication date: 2012.01.04, the patent literature discloses an environment-friendly paper-plastic separation system device, which consists of a shredder, a conveyor belt, a cylindrical screen, the first washing pulp tank, a vibrating screen, a conveying The pipeline, the second water washing tank, and the vibrating inclined screen are connected in sequence. The vibrating inclined screen is also connected to the squeezer and the baler respectively, and procedures such as mincing, soaking, and screening are used to effectively peel off the waste paper-plastic composite materials. The stripped paper is converted and restored to pulp, and the plastic recycled after stripping can be directly granulated, which not only turns waste paper and plastic materials into treasure, but also solves the problem of environmental protection. But this utility model has used pulp washing tank twice, needs a large amount of water to finish, causes the waste of water resource easily, and pulp washing time is also longer (in order to fully soak), and production efficiency needs to be improved.

Contents of the invention

1. The technical problem to be solved by the invention

Aiming at the problems in the prior art that the paper-plastic separation efficiency of waste paper-plastic composite materials is low, the imported paper-plastic separation system is not suitable for waste paper-plastic composite materials classified in China, and the existing paper-plastic separation system wastes a lot of water resources, the present invention provides a Disclosed are a paper-plastic separation production system and a separation method for waste paper-plastic composite materials. It can achieve the purpose of improving production efficiency, separating paper and plastic from any waste paper and plastic composite materials suitable for domestic classification, and recycling water resources.

2. Technical solution

The main working principle of this invention is to use water as the medium and high-speed friction to separate paper and plastics, which completely solves the application problem of coated waste paper as papermaking raw materials. The separated plastics are used as plasticizing raw materials and modified by extruders. Afterwards, it can be used as automobile chassis guard plate, engineering plate, aluminum-plastic plate filler, flower pot, etc., to exert the greatest economic benefits in various applications.

In order to achieve the above object, the technical scheme provided by the invention is:

A paper-plastic separation production system for waste paper-plastic composite materials, including a paper-plastic separation device and a pulp processing device after paper-plastic separation. The paper-plastic separation device includes a feed inlet, a material pushing mechanism, an extruder and a friction mechanism; The post-pulp treatment device includes a pulp removal mechanism and a pulp extrusion mechanism, wherein: the material pushing mechanism and the friction mechanism are barrel structures, the feeding port is set at one end of the material pushing mechanism and communicates with it, and the extruder is detachable and installed on the The other end of the material pushing mechanism; the friction mechanism is connected to the discharge end of the extruder; the water inlet is set above the left end of the friction mechanism; the friction mechanism includes a water inlet, a vertical angle screen, a pulp outlet, a plastic outlet and a motor A The vertical angle sieve and its motor A are inside the vertical angle sieve, and the motor A is fixedly arranged on the axis of the friction mechanism at the right end, and the vertical angle sieve is in the shape of a barrel sieve; At the bottom of the mechanism, the plastic outlet is close to the right end of the vertical angle screen; the pulp removal mechanism includes a feed pipe, a temporary storage box, a motor B, a pulp tank, a foreign matter collection box and a drum screen; one end of the feed pipe and pulp raw materials The pool is connected, and the other end is connected with the temporary storage box; the temporary storage box and the drum screen are connected through a connecting pipe; the pulp tank is set directly below the drum screen; the left end of the drum screen is fixedly connected to the fixed bracket, and the right end of the shaft is driven by motor B Connection, the impurity outlet at the left end communicates with the impurity collection box; the pulp extrusion mechanism includes a feed tank, a feed plate, a collection box, power equipment, supports, a sump and extrusion equipment; the feed tank communicates with the pulp tank, and through the feed plate and The extruding equipment is matched and connected; the extruding equipment is fixed on the support of the frame structure, the sump is arranged at the bottom of the extruding equipment; the collecting box is arranged at the outlet of the extruding equipment.

In the preferred solution, the extruder is a cross knife structure; the material pushing mechanism is a screw propulsion structure.

In the preferred solution, the drum sieve has a downward-inclining structure at the right end; the extrusion equipment includes a feed roller, an upper extrusion roller and a lower extrusion roller, and the three rollers are in the shape of a "product"; Above, the front end of the feed plate is tangent to the circular surface of the feed roll, and the width is consistent with the length of the feed roll.

In the preferred solution, the vertical angle screen is a hexagonal screen; the motor A is a high-speed motor; there are N drum screens, which are evenly distributed on the right side of the temporary storage box, and the inner wall is uniformly provided with retaining bars; the power equipment includes a reducer and a motor C , The motor C is connected with the reducer in transmission mode, and the central axis of the reducer and the lead roller, the upper extrusion roller and the lower extrusion roller is connected in transmission type through bearings.

In the preferred scheme, the number of drum sieves is 3, and the inclination angle is 5-30 degrees; a filter screen is arranged at the connection between the feed trough and the feed plate; friction blocks are evenly arranged along the inner mesh wall of the vertical angle screen.

The preferred solution is that the right side of the vertical angle sieve is closed, and the plastic outlet is close to the closing position of the vertical angle sieve; the rotation speed of the drum sieve is 1 to 2 revolutions per second, and the mesh number of the screen is 20 to 50 mesh; It is distributed in a spiral shape; the material of the lead roller, the upper extrusion roller and the lower extrusion roller is rubber roller.

In a preferred solution, the volume of water in the friction mechanism is 60% to 80% of the total capacity.

A paper-plastic separation method of a waste paper-plastic composite material paper-plastic separation production system, the steps of which are:

A. Paper-plastic separation: start the paper-plastic separation device, and the waste paper-plastic packaging materials enter the system from the feeding port. Under the pushing action of the material pushing mechanism, they are separated by the extruder, decomposed into waste paper-plastic pieces, and then enter the friction mechanism; The water inlet starts to inject the circulating water of the system, and the motor A drives the vertical angle screen to rotate at a high speed, forming a high-intensity eddy current rubbing and cyclic friction under the action of the water, so that the waste paper and plastic sheets are subjected to high-strength impact and friction separation of paper and plastic in all directions , the pulp is fully decomposed into fibers, under the swelling action of water, the cutting of pulp fibers is avoided, the pulp flows out from the pulp outlet under the sieve plate of the vertical angle sieve, and the separated plastic sheets are discharged from the plastic outlet;

B. Pulp removal: The pulp flowing out of the pulp outlet is pumped to the feed pipe of the pulp removal mechanism, and flows downstream to the temporary storage box. Under the distribution of the temporary storage box, the pulp flows into each roller through the connecting pipe. Barrel sieve; driven by motor B, the drum sieve rotates at a uniform speed, and the pulp after removal of impurities passes through the mesh of the screen and falls vertically into the pulp tank under the action of gravity; impurities that do not pass through the mesh of the screen, such as metal and plastic sheets , aluminum foil, etc., fall into the impurity collection box through the impurity outlet at the side end of the drum screen;

C. The pulp is left to settle: after the pulp is left to stand for 1 to 5 hours in the pulp tank, the supernatant is pumped to the water inlet for recycling;

D. Pulp extrusion: The pulp settled in the pulp tank is pumped to the feed tank, and flows into the extrusion equipment along the feed plate; after the pulp is extruded and dehydrated by the extrusion equipment, the pulp cake produced falls into the collection box; The pressed water falls into the sump and is also pumped to the water inlet for recycling;

E. Plastic sheet compression packaging: After the separated plastic sheet in step A is discharged from the plastic outlet, it is transported to the compression packaging machine by a belt for compression packaging or directly transferred to the subsequent process for processing.

Further treatment plan, step B is followed by a multi-stage pulp dehydration device. The pulp in the pulp tank first passes through a 5 mm mesh screen, and the pulp larger than 5 mm is separated in the first step, and then passes through an 800-mesh vertical screen, and then pumped into the net by a high-speed pump The quality conveyor belt is pressed into strips by the press; the pulp less than 5 mm is further separated in the multi-stage filter press, and the water from the filter press is clean water without impurities, which is returned to the water inlet for recycling.

In a further treatment scheme, in step D, the settled pulp in the pulp tank is transported to the feed trough by a mesh belt conveyor.

3. Beneficial effect

Compared with the prior art, the technical solution provided by the invention has the following beneficial effects:

(1) The paper-plastic separation production system of waste paper-plastic composite materials of the present invention processes various waste cartons into pieces through the cooperation of the material pushing mechanism and the extruder, and then through the synergistic effect of the water in the friction mechanism and the vertical angle sieve High-strength eddy current kneading cycle is generated to separate the paper and plastic in the debris by friction; after separation, the pulp is guided by the temporary storage box and the rotation of the drum screen, which realizes the purpose of high efficiency of pulp removal after paper and plastic separation, and is an assembly line Work, the labor intensity of workers is low, a large amount of filtered water can be recycled, and there is less waste of water resources; the pulp after impurity removal enters the extrusion mechanism through the cooperation of the introduction trough and the introduction plate, and the thickness of the output is uniform; extrusion The extruded water can be recycled and used in production after being collected in the sump; it realizes the purpose of improving production efficiency, applicable to any waste paper-plastic composite materials classified in China, and recycling water resources;

(2) The paper-plastic separation production system of the waste paper-plastic composite material of the present invention, the cooperation of the cross knife structure and the spiral propulsion type material pushing mechanism makes the fragmentation of various waste paper boxes easier;

(3) The paper-plastic separation production system of the waste paper-plastic composite material of the present invention has a downward-inclining structure at the right end of the drum screen, which provides power for the flow of pulp; the synergistic effect of the feed roller, the upper squeeze roller and the lower squeeze roller, It ensures uniform thickness after extrusion, and ensures that the moisture content of the pulp after dehydration is suitable for subsequent processing;

(4) The paper-plastic separation production system of waste paper-plastic composite materials of the present invention, the synergistic effect of the hexagonal screen and the high-speed motor enhance the separation effect of paper and plastic, and the production efficiency is higher; multiple drum screens can be installed to improve the efficiency of impurity removal ;The use of the baffle can buffer the flow rate of the pulp, remove the impurities thoroughly, and guide the impurities to move to the outlet; the cooperation between the motor C and the reducer in the extrusion mechanism can adjust the appropriate speed of the three rollers to adapt to the processing The need for parameters;

(5) In the waste paper-plastic composite material paper-plastic separation production system of the present invention, three drum screens are provided, which is the quantity required for normal production; the setting with an inclination angle of 5 to 30 degrees is the most suitable obtained by the inventor's long-term production practice If the inclination angle range is too large, the flow rate will be too fast, which will affect the effect of impurity removal, and if it is too low, the flow rate will be too slow, which will affect the efficiency; the setting of the filter screen at the connection between the feed tank and the feed plate in the pulp extrusion mechanism is beneficial to prevent other impurities from entering the extrusion. Pressed pulp; the use of friction blocks increases the strength of eddy current rubbing and improves the separation efficiency of paper and plastic;

(6) In the paper-plastic separation production system of waste paper-plastic composite materials of the present invention, the right side of the vertical angle sieve is closed, which facilitates the collection of plastic pieces after separation; the bars in the pulp removal mechanism are distributed in a spiral shape, and the production effect is the best , the removal of impurities is more thorough and does not affect the flow of materials; the rotation speed of the drum sieve is 1 to 2 revolutions per second, and the mesh number of the screen is 20 to 50 meshes. The optimal process parameter range; the setting of the rubber roller in the pulp extrusion mechanism can effectively prevent excessive extrusion and make the moisture content unsuitable for subsequent processing for pulp extrusion;

(7) In the waste paper-plastic composite material paper-plastic separation production system of the present invention, the volume of water in the friction mechanism is 60% to 80% of the total capacity, which is the best capacity range obtained by the inventor through long-term practice, that is, to achieve The maximum effect of paper-plastic separation is achieved without adding too much load to the motor;

(8) The paper-plastic separation method of the waste paper-plastic composite material paper-plastic separation production system of the present invention, through the steps of paper-plastic separation → pulp removal → pulp static precipitation → pulp extrusion → plastic sheet compression packaging and other steps, the steps are easy to operate And monitoring, suitable for the treatment of various packaging materials such as waste plastic cartons, with a wide range of applications;

(9) The paper-plastic separation method of the waste paper-plastic composite material paper-plastic separation production system of the present invention, the use of multi-stage pulp dewatering device, is convenient to carry out further classification to pulp, and the paper pulp that is greater than and 5 millimeters returns to paper mill and causes high High-strength corrugated paper is the best material for the stress-bearing layer in the middle of the carton; pulp less than 5 mm is the raw material for newsprint and kraft paper, which improves the utilization effect of pulp and maximizes its value;

(10) The paper-plastic separation method of the waste paper-plastic composite material paper-plastic separation production system of the present invention, the application of the mesh belt conveyor, makes the pulp filter during the conveying process, and improves the production efficiency;

(11) The paper-plastic separation production system and separation method of waste paper-plastic composite materials of the present invention effectively solve the difficult problem that film-coated waste is not easy to be used as papermaking raw materials; widen the field of raw materials for recycled paper production; there is no secondary waste in the production process Pollution is generated, and the rational use of renewable resources is truly achieved, the maximum benefit is achieved, the burden of solid waste treatment is reduced, and the environment is protected.

Description of drawings

Fig. 1 is the structural representation of paper-plastic separating device of the present invention;

Fig. 2 is the structural representation of the paper pulp treatment device after the paper-plastic separation of the present invention;

Fig. 3 is a left view of the pulp removal mechanism of the present invention;

Fig. 4 is a left view of the pulp extruding mechanism of the present invention;

Fig. 5 is a process flow diagram of the paper-plastic separation method of the present invention.

Explanation of the labels in the schematic diagram: 1. Feed inlet; 2. Material pushing mechanism; 3. Extruder; 4. Friction mechanism; 5. Pulp removal mechanism; 6. Pulp extrusion mechanism; Vertical angle screen; 43, friction block; 44, pulp outlet; 45, plastic outlet; 46, motor A; 51, feed pipe; 52, temporary storage box; 53, drum screen; 54, connecting pipe; 55 , motor B; 56, pulp tank; 57, impurity collection box; 58, retaining bar; Squeeze roller; 66, collecting box; 67, power mechanism; 68, support; 69, sump; 451, blocking piece.

detailed description

In order to further understand the content of the present invention, the present invention will be described in detail in conjunction with the accompanying drawings.

Example 1

As shown in Figures 1 and 2, a paper-plastic separation production system for waste paper-plastic composite materials in this embodiment includes a paper-plastic separation device and a pulp processing device after paper-plastic separation. The paper-plastic separation device includes a feed port 1, Material pushing mechanism 2, extruder 3 and friction mechanism 4; pulp processing device after separation of paper and plastic includes pulp removal mechanism 5 and pulp extruding mechanism 6, wherein: material pushing mechanism 2 and friction mechanism 4 are barrel structures, The feed port 1 is set at one end of the material pushing mechanism 2 and communicates with it, and the extruder 3 is detachably installed at the other end of the material pushing mechanism 2; the friction mechanism 4 is connected with the discharge end of the extruder 3; the water inlet 41 is set Position above the left end of friction mechanism 4; friction mechanism 4 includes water inlet 41, vertical angle sieve 42, pulp outlet 44, plastic outlet 45 and motor A46; vertical angle sieve 42 and its motor A46 are inside vertical angle sieve 42 , The motor A46 is fixedly arranged on the axis of the friction mechanism 4 at the right end, and the vertical angle sieve 42 is in the shape of a barrel sieve; the pulp outlet 44 and the plastic outlet 45 are respectively arranged at the bottom of the friction mechanism 4 from left to right, and the plastic outlet 45 is close to At the right end outlet of the vertical angle screen 42; the pulp removal mechanism 5 includes a feed pipe 51, a temporary storage box 52, a motor B55, a pulp pool 56, an impurity collection box 57 and a drum screen 53; one end of the feed pipe 51 and the pulp raw material The pool is connected, and the other end is connected with the temporary storage box 52; the temporary storage box 52 and the drum screen 53 are connected through the connecting pipe 54; the pulp tank 56 is arranged directly below the drum screen 53; the left end of the drum screen 53 is fixedly connected on the fixed bracket, The right end of the axis is connected to the motor B55 transmission, and the impurity outlet at the left end communicates with the impurity collection box 57; the mesh of the drum screen 53 is 20 mesh, the number of revolutions is 2 revolutions/second, and the inclination angle is 5 degrees; as shown in Figure 2 and Figure 4 As shown, the pulp extruding mechanism 6 includes a feed tank 61, a feed plate 62, a collection box 66, a power device 67, a support 68, a sump 69 and extrusion equipment; the feed tank 61 communicates with the pulp pool, and passes through the feed plate 62 Cooperate with the extrusion equipment; the extrusion equipment is fixed on the bracket 68 of the frame structure, the water collection pool 69 is arranged at the bottom of the extrusion equipment; the collection box 66 is arranged at the outlet of the extrusion equipment.

As shown in Figure 5, the paper-plastic separation method of the waste paper-plastic composite material paper-plastic separation production system of the present embodiment, the steps are:

A. Paper-plastic separation: start the paper-plastic separation device, and the waste paper-plastic packaging materials enter the system from the feed port 1. Under the pushing action of the material pushing mechanism 2, they are separated by the extruder 3 and decomposed into waste paper-plastic pieces before entering the system. Friction mechanism 4; the water inlet 41 starts to inject the circulating water of the system, and the motor A46 drives the vertical angle screen 42 to rotate at a high speed, forming a high-intensity eddy current rubbing cycle friction under the action of water, so that the waste paper and plastic sheets are impacted at high strength in all directions It is separated from the friction of paper and plastic, and the pulp is fully decomposed into fibers. Under the swelling action of water, the cutting of pulp fibers is avoided. The sheet is discharged from the plastic outlet 45;

B. Pulp removal: the pulp flowing out of the pulp outlet 44 is pumped to the feed pipe 51 of the pulp removal mechanism 5, and flows downstream to the temporary storage box 52. Under the distribution of the temporary storage box 52, the pulp passes through the connection The pipe 54 flows into each drum screen 53; driven by the motor B55, the drum screen 53 rotates at a uniform speed, and the pulp after cleaning passes through the mesh of the screen, and falls vertically into the pulp pool 56 under the action of gravity; Mesh impurities, such as metal, plastic sheet, aluminum foil, etc., fall into the impurity collection box 57 through the impurity outlet at the side end of the drum sieve 53;

C. The pulp is left to settle: after the pulp in the pulp tank 56 is left to stand for 1 to 5 hours, the supernatant is pumped to the water inlet 41 for recycling;

D. Pulp extrusion: The pulp settled in the pulp tank 56 is pumped to the feed tank 61, and flows into the extrusion equipment along the feed plate 62; after the pulp is extruded and dehydrated by the extrusion equipment, the pulp cake produced falls into the collecting tank. Feed box 66; the squeezed water falls into the sump 69, and is also pumped to the water inlet 41 for recycling;

E. Compression packaging of plastic sheets: After the separated plastic sheets in step A are discharged from the plastic outlet 45, they are transported to a compression packaging machine by a belt for compression packaging or directly transferred to a subsequent process for processing.

The paper-plastic separation production system of waste paper-plastic composite materials and the paper-plastic separation method of the present embodiment process various waste cartons into pieces through the cooperation of the material pushing mechanism and the 2 extruder 3, and then pass through the friction mechanism 4 in the water The synergy with the vertical angle screen 42 produces a high-intensity vortex kneading cycle, which frictionally separates the paper and plastic in the debris; after separation, the pulp is guided by the temporary storage box 52 and the rotation of the drum screen 53, which realizes the separation of the paper and plastic pulp. The purpose of high impurity removal efficiency, and it is an assembly line operation, the labor intensity of the workers is low, a large amount of filtered water can be recycled, and the waste of water resources is less; the pulp after the impurity removal enters through the cooperation of the feed tank 61 and the feed plate 62 After the pulp extruding mechanism 6, the thickness of the output material is uniform; the extruded water can be recycled and used in production after being collected in the sump; it realizes the improvement of production efficiency and is suitable for any waste paper-plastic composite material classified in China and The purpose of recycling water resources.

Example 2

The paper-plastic separation production system of waste paper-plastic composite materials in this embodiment has the same basic structure as that of embodiment 1, except that the extruder 3 is a cross knife structure; the material pushing mechanism 2 is a spiral propulsion structure; the drum screen 53 It is a right-end downward-inclining structure; the extrusion equipment includes a feed roller 63, an upper extrusion roller 64 and a lower extrusion roller 65, and the three rollers are in the shape of a "product", and the upper extrusion roller 64 is fixedly connected to the bracket 68. The front end of the material guide plate 62 is tangent to the circular surface of the material guide roller 63, and the width is consistent with the length of the material guide roller 63; the vertical angle screen 42 is a hexagonal screen; the motor A46 is a high-speed motor; the power equipment 67 includes a reducer and a motor C, a motor C and a speed reducer. Machine transmission type connection, reducer and lead roller 63, upper extrusion roller 64 and lower extrusion roller 65 are connected by bearing transmission type; the number of drum screens 53 is 3, and the inclination angle is 15 degrees, as shown in Figure 3 Shown, its inner wall is uniformly provided with retaining bar 58; The connecting part of feed trough 61 and feed plate 62 is provided with filter screen; Friction block 43 is evenly arranged along the vertical angle screen 42 inner mesh wall; The right side of vertical angle screen 42 is closing shape, The plastic outlet 45 is close to the mouth of the vertical angle screen 42; the rotation speed of the drum screen 53 is 1 rpm, and the mesh number of the screen is 20 mesh; the retaining strips 58 are distributed in a spiral shape; 64 and the following squeeze roller 65 are made of rubber rollers; the volume of water in the friction mechanism 4 is 60% of the total capacity.

The paper-plastic separation method of the waste paper-plastic composite material paper-plastic separation production system of this embodiment, its basic steps are the same as embodiment 1, the difference is: after step B, a multi-stage pulp dehydration device is carried out, and the pulp in the pulp tank 56 is passed through first. 5mm mesh screen, separate the pulp larger than 5mm in the first step, then pass through the 800-mesh vertical screen, and then pump it into the mesh conveyor belt through a high-speed pump, and press it into strips through a press; filter for further separation.

The paper-plastic separation production system of waste paper-plastic composite materials and the paper-plastic separation method of this embodiment, the cross-knife structure and the cooperation of the screw-type material pushing mechanism 2 make it easier to fragment various waste paper boxes; The right end of the sieve 53 has a downward-inclining structure, which provides power for the flow of pulp; the synergistic effect of the feed roller 63, the upper extrusion roller 64 and the lower extrusion roller 65 not only ensures uniform thickness after extrusion, but also ensures that the pulp is extruded and removed. The water content after water is suitable for subsequent processing; the synergistic effect of the hexagonal screen and the high-speed motor enhances the separation effect of paper and plastic, and the production efficiency is higher; the cooperation of the motor C and the reducer in the pulp extrusion mechanism can adjust the three-roller Appropriate rotating speed to meet the needs of processing parameters; three drum screens 53 are installed, which is the number required for normal production, and the use of retaining bars 58 can buffer the flow rate of pulp, thoroughly remove impurities, and guide impurities to move to the outlet The setting of the filter screen at the connected place between the feed tank 61 and the feed plate 62 in the pulp extruding mechanism 6 is conducive to preventing other impurities from entering the extruded pulp; the use of the friction block 43 increases the eddy current rubbing intensity and improves the separation of paper and plastic. Efficiency; the setting of the rubber roller in the pulp extrusion mechanism can effectively prevent excessive extrusion of the pulp and make the moisture content unsuitable for subsequent processing; the use of multi-stage pulp dehydration device is convenient for further classification of pulp, Pulp larger than 5 mm is returned to the paper mill to produce high-strength corrugated paper, which is the best material for the middle stress layer of the carton; pulp smaller than 5 mm is the raw material for newsprint and kraft paper, improving the utilization of pulp and maximizing its value application.

Example 3

The paper-plastic separation production system of waste paper-plastic composite materials in this embodiment has the same basic structure as that of embodiment 2, except that a blocking piece 451 is set above the plastic outlet 45, inside the right end of the friction mechanism, and below the hexagonal sieve to facilitate plastic The collection of flakes prevents them from flowing into the pulp outlet 44. On the surface of the friction block 42, a blade is arranged to improve the separation effect of fragment separation during high-speed rotation, so as to make the paper pulp more thoroughly. In the temporary storage box 52, a dividing plate 59 is set between every two drum screens 53, and the quantity of the drum screens 53 can be adjusted as required. Effectively prevent pulp from being temporarily stored in the temporary storage box 52 for a long time; the mesh number of the drum screen 53 is 50 mesh, the number of revolutions is 2 revolutions per second, and the inclination angle is 30 degrees. The bottom plane of the feed trough 61 is in the form of an inclined plane inclined toward the feed plate 62 . The motor C uses a variable frequency motor. The volume of water in the friction mechanism 4 is 80% of the total capacity.

The paper-plastic separation method of the waste paper-plastic composite material paper-plastic separation production system of this embodiment, its basic steps are the same as embodiment 1, the difference is: in step D, the pulp after sedimentation in the pulp tank 56 passes through the mesh belt conveyor Transported to the lead tank 61.

The paper-plastic separation production system of waste paper-plastic composite materials in this embodiment is suitable for paper pulp with moderate fragmentation and moderate fineness; the use of partitions 59 improves the versatility of the entire device; The flow does not leave a dead angle, preventing the pulp that has not flowed for a long time from spoiling and deteriorating and affecting product quality. The use of frequency conversion motors reduces the speed as the pulp decreases, which can save energy and reduce consumption.

The examples described in the present invention are only to describe the preferred implementation of the present invention, and are not intended to limit the concept and scope of the present invention. Variations and improvements should all fall within the protection scope of the present invention, and the technical content claimed in the present invention has been fully recorded in the claims.

Claims (7)

1. A paper-plastic separation production system for waste paper-plastic composite materials, comprising a paper-plastic separation device and a pulp processing device after paper-plastic separation, characterized in that: the paper-plastic separation device includes a feed inlet (1), a material pushing mechanism (2), extruder (3) and friction mechanism (4); said pulp processing device after paper-plastic separation includes pulp removal mechanism (5) and pulp extrusion mechanism (6), wherein: Both the material pushing mechanism (2) and the friction mechanism (4) are barrel structures, the feed inlet (1) is arranged at one end of the material pushing mechanism (2) and communicates with it, and the extruder (3) It is detachably installed on the other end of the material pushing mechanism (2); the friction mechanism (4) is connected to the discharge end of the extruder (3); the friction mechanism (4) includes a water inlet (41), a vertical angle Sieve (42), pulp outlet (44), plastic outlet (45) and motor A (46), described water inlet (41) is arranged on the position above the left end of friction mechanism (4); Described vertical angle screen ( 42) and its motor A (46) are inside the vertical angle sieve (42), and the motor A (46) is fixedly arranged on the axis of the friction mechanism (4) at the right end, and the vertical angle sieve (42) is a bucket sieve shape; The pulp outlet (44) and the plastic outlet (45) are respectively arranged at the bottom of the friction mechanism (4) from left to right, and the plastic outlet (45) is close to the right end outlet of the vertical angle sieve (42); The pulp impurity removal mechanism (5) includes a feed pipe (51), a temporary storage box (52), a motor B (55), a pulp pool (56), an impurity collection box (57) and a drum screen (53); One end of the feed pipe (51) communicates with the pulp raw material tank, and the other end communicates with the temporary storage box (52); the temporary storage box (52) communicates with the drum screen (53) through a connecting pipe (54); A pulp tank (56) is set directly below the drum screen (53); the left end of the drum screen (53) is fixedly connected to the fixed bracket, the right end of the shaft is connected to the motor B (55) through transmission, and the impurity outlet on the left end is connected to the impurity collection box ( 57) are connected; the pulp extruding mechanism (6) comprises a feed tank (61), a feed plate (62), a collection box (66), power equipment (67), a support (68), a sump (69) and Extrusion equipment; the introduction groove (61) communicates with the pulp pool, and is connected with the extrusion equipment through the introduction plate (62); the extrusion equipment is fixed on the support (68) of the frame structure, and the collection The pool (69) is arranged at the bottom of the extruding equipment; the collection box (66) is arranged at the outlet of the extruding equipment. 2. A paper-plastic separation production system for waste paper-plastic composite materials according to claim 1, characterized in that: the extruder (3) is a cross knife structure; the material pushing mechanism (2) is a screw propulsion formula structure. 3. A paper-plastic separation production system for waste paper-plastic composite materials according to claim 1 or 2, characterized in that: the drum screen (53) has a right-end downward-inclining structure; the extrusion equipment includes a lead material Roller (63), upper extrusion roller (64) and lower extrusion roller (65), three rollers are " product " font structure, upper extrusion roller (64) is fixedly connected on the support (68) on the top, and the guide plate The front end of (62) is tangent to the circular surface of the leading material roller (63), and the width is consistent with the length of the leading material roller (63). 4. A waste paper-plastic composite material paper-plastic separation production system according to claim 1 or 2, characterized in that: the vertical angle sieve (42) is a hexagonal sieve; the motor A (46) is a high-speed motor ; The drum sieve (53) is evenly distributed on the right side of the temporary storage box (52), and its inner wall is evenly provided with retaining bars (58); the power equipment (67) includes a reducer and a motor C, and the motor C and The speed reducer is connected in a transmission manner, and the central axis of the speed reducer and the lead roll (63), the upper extrusion roller (64) and the lower extrusion roller (65) is connected by a bearing transmission type. 5. A paper-plastic separation production system for waste paper-plastic composite materials according to claim 4, characterized in that: the number of the drum screens (53) is 3, and the inclination angle is 5-30 degrees; (61) is provided with filter screen at the place that is connected with feed plate (62); Friction block (43) is evenly arranged along the vertical angle sieve (42) inner net wall. 6. A paper-plastic separation production system for waste paper-plastic composite materials according to claim 5, characterized in that: the right side of the vertical angle sieve (42) is closed, and the plastic outlet (45) is close to the vertical angle sieve (42); the number of revolutions of the drum sieve (53) is 1 to 2 revolutions per second, and the mesh number of the screen is 20 to 50 mesh; the retaining bars (58) are distributed in a spiral shape; the Leading material roll (63), last extrusion roll (64) and following extrusion roll (65) material are rubber rolls. 7. A waste paper-plastic composite material paper-plastic separation production system according to claim 6, characterized in that: the volume of water in the friction mechanism (4) is 60% to 80% of the total capacity.