CN110978335B - An environmentally friendly regeneration production line for high-impurity waste agricultural film - Google Patents

Abstract

The invention discloses an environmental protection regeneration production line of high-impurity-containing waste agricultural film. It comprises: an agricultural film crushing device, which is used for crushing waste and old agricultural films; an axial flow centrifugal impurity removal device, which is used for removing impurities mixed in the waste and old agricultural films; friction A washing device, the friction washing device is used for washing and cleaning waste and old agricultural films; an axial flow centrifugal dewatering device is used for dehydrating waste and old agricultural films; the waste and old agricultural films are passed through the agricultural film. After being crushed by the crushing device, the axial flow centrifugal impurity removal device is used for impurity removal, the waste agricultural film after impurity removal is washed and cleaned by the friction washing device, and finally dewatered by the axial flow centrifugal dehydration device. The environmental protection regeneration production line of the high-impurity-contained waste and old agricultural film of the invention has the advantages of simple structure and good treatment effect of the waste and old agricultural film.

Description

An environmentally friendly regeneration production line for high-impurity waste agricultural film

technical field

The invention belongs to the technical field of film treatment and regeneration, and in particular relates to an environment-friendly regeneration production line of high-contamination waste and old agricultural film.

Background technique

Agricultural film (hereinafter referred to as agricultural film) is a general term for plastic films used in agricultural production, which plays a very important role in moisturizing and heat preservation during sowing. After the agricultural film is used, it is often not effectively recycled, which not only wastes resources, but also causes land pollution and damages the natural environment.

Generally, the treatment of waste agricultural film is to recycle the waste agricultural film, loosen the soil layer with the waste agricultural film, and then collect the soil, the waste agricultural film and other impurities together for recycling. The waste agricultural film obtained in this way is high in impurities and has a large amount of impurities such as soil, straw and weeds. The existing waste agricultural film treatment production line is relatively complicated, and the recycling treatment effect is not good.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide an environmentally friendly regeneration production line of high-contamination waste agricultural film, so as to effectively solve the deficiencies of the prior art.

To achieve the above object, the present invention adopts the following technical solutions:

An environmentally friendly regeneration production line for high-contamination waste agricultural film, comprising:

An agricultural film crushing device, the agricultural film crushing device is used for crushing waste agricultural film;

Axial flow centrifugal impurity removal device, the axial flow centrifugal impurity removal device is used to remove impurities mixed in waste agricultural film;

a friction washing device, the friction washing device is used for washing and cleaning the waste agricultural film;

Axial flow centrifugal dehydration device, which is used for dehydrating waste agricultural film;

After the waste agricultural film is crushed by the agricultural film crushing device, impurities are removed by the axial flow centrifugal impurity removal device. The waste agricultural film after removal of impurities is washed and cleaned by the friction washing device, and finally removed by the axial flow Centrifugal dehydration device for dehydration.

As a further improvement of the above-mentioned high-impurity waste agricultural film environmental protection regeneration production line, the axial flow centrifugal impurity removal device includes:

The trash removal rack, the trash removal rack includes a detachable and separated upper trash removal body and a lower trash removal body, and the lower trash removal body is provided with an trash removal support seat;

Screening cylinder, the screening cylinder is provided with screening holes, the screening cylinder includes an upper half cylinder and a lower half cylinder, the upper half cylinder is arranged in the upper impurity removal body, and the lower half cylinder is arranged in the In the lower impurity removal body, the upper half-cylinder and the lower half-cylinder together form a cylindrical cavity;

A rotating shaft, the rotating shaft is coaxial with the screening cylinder, one end of the rotating shaft passes through and is rotatably connected to the first side wall of the trash removal frame, and the other end of the rotating shaft passes through and is rotatably connected to the first side wall of the trash removal frame. the second side wall of the trash removal rack;

The impurity removal drive motor, the impurity removal drive motor is arranged on the lower impurity removal body, and drives the rotation shaft to rotate through a transmission mechanism;

A number of dial groups, a number of the dial groups are arranged on the rotation shaft along the axis of the rotation shaft, each of the dial groups includes a number of dial sheets, the dial sheets and the The axis of the rotating shaft forms an acute angle and faces the direction of the second side wall;

The impurity removal feed port is arranged on the upper part of the first side wall and is located inside the screening cylinder;

The impurity removal discharge port is arranged at the upper end of the upper impurity removal body near the second side wall, and the upper half cylinder is provided with a corresponding impurity removal discharge port. opening; and

A plurality of fan plates are arranged on the rotating shaft in parallel with the axis of the rotating shaft, and are located directly below the impurity removal outlet.

As a further improvement of the above-mentioned high-contamination waste agricultural film environmental protection regeneration production line, several of the dial groups are arranged on the rotating shaft at equal intervals.

As a further improvement of the above-mentioned high-contamination waste agricultural film environmental protection regeneration production line, each of the set of flippers includes four flippers, and the flippers are arranged at equal intervals along the circumference of the rotating shaft.

As a further improvement of the above-mentioned production line for environmental protection regeneration of high-impurity waste agricultural film, the number of the fan plates is 4, and the fan plates are arranged at equal intervals along the circumference of the rotating shaft.

As a further improvement of the above-mentioned high-impurity-contained waste agricultural film environmental protection regeneration production line, it also includes a reticulated aggregate silo, and the reticulated aggregate silo is arranged between the axial flow centrifugal impurity removal device and the friction washing device. ; The reticulated collection silo includes a support leg and a water flow collection trough, both ends of the water flow collection trough are provided with water spouts, and a discharge port is provided at the middle of the bottom of the water flow collection trough. The discharge port is connected to the feed port of the friction washing device; the middle position of the bottom of the water flow collecting tank is lower than the positions of both ends.

As a further improvement of the above-mentioned high-contamination waste agricultural film environmental protection regeneration production line, it also includes a film water squeezing device, and the film water squeezing device is arranged between the friction washing device and the axial flow centrifugal dewatering device; the The film water squeezing device includes an inclined inner cavity, and the bottom of the inclined inner cavity is provided with a drainage hole.

As a further improvement of the above-mentioned high-contamination waste agricultural film environmentally friendly regeneration production line, the friction washing device includes:

a washing rack, the washing rack includes a detachable and separated upper washing body and a lower washing body, and a washing support seat is arranged at the lower part of the lower washing body;

The outer friction cage is composed of several first friction strips, and there is a gap between every two first friction strips. The outer friction cage includes an upper half cage and a lower half cage, and the upper half cage The cage is arranged in the upper washing machine body, the lower half cage is arranged in the lower washing machine body, and the upper half cage and the lower half cage together enclose a long cylindrical cavity;

a rotating drum, the rotating drum is arranged in the outer friction cage and is coaxial with the outer friction cage; The other end of the rotating drum passes through and is rotatably connected to the second side plate of the frame;

a plurality of second friction strips, the second friction strips extend from one bottom surface to the other bottom surface along the outer side of the rotating drum, and form an acute angle with the rotating axis of the rotating drum;

a washing driving motor, which is arranged on the lower washing body and can drive the rotating drum to rotate;

a washing feeding port, the washing feeding port is arranged at the upper end of the upper washing body near the first side plate, and an opening is provided on the upper half cage at a position corresponding to the washing feeding port; and

A washing outlet, which is arranged at the lower end of the lower washing body near the second side plate, and an opening is provided on the lower half cage at a position corresponding to the washing outlet.

As a further improvement of the above-mentioned high-impurity waste agricultural film environmental protection regeneration production line, the angle formed by the second friction strip and the rotating shaft of the rotating drum is in the range of 10° to 20°.

As a further improvement of the above-mentioned high-contamination waste agricultural film environmental protection regeneration production line, it also includes a water circulation system, which includes a pipeline system for supplying water required for the production process, a waste water tank for collecting waste water after use, and a filtration system.

Compared with the prior art, the environmental protection regeneration production line of high-impurity waste agricultural film of the present invention has at least the following technical effects:

1. Set up an agricultural film crushing device. The waste agricultural film that needs to be recycled first enters the agricultural film crushing device for crushing, and after it is broken into smaller pieces, it is convenient for other subsequent processes.

2. The waste agricultural film broken into thin film fragments enters the impurity removal device for the first step of impurity removal. Since the waste agricultural film contains a large amount of impurities such as soil, straw, weeds, etc., the broken waste agricultural film first enters the removal of impurities. Impurity removal in the impurity device can effectively remove most of the impurities.

3. In the axial flow centrifugal impurity removing device of the present invention, the dial plate arranged on the rotating shaft forms an acute angle with the axis direction of the rotating shaft, so that during the rotating process of the rotating shaft, in addition to generating radial force to impact and separate waste agricultural products In addition to the film and impurities, it can also generate an axial force to push the waste agricultural film to move axially to the impurity removal outlet. Its structure is relatively simple, and the effect of removing impurities is good.

4. The friction washing device in the present invention is provided with a second friction strip that forms an acute angle with the rotating shaft of the rotating drum, and a first friction strip that has a gap with each other. When the rotating drum rotates, it drives the waste agricultural film to roll, and the first friction strip is Together with the second friction strip, the waste agricultural film is pressurized and rubbed to speed up the separation of impurities attached to the waste agricultural film, and the clean waste agricultural film can be transported to the discharge port. The structure is relatively simple, and the washing effect is better.

5. A mesh aggregate bin is added between the axial flow centrifugal impurity removal device and the friction washing device. Before washing the waste agricultural film, the water flow aggregate tank can remove impurities such as soil, straw and weeds. It is convenient to carry out the washing operation, so that the washing effect is better.

6. A film water squeezing device is added between the friction washing device and the axial flow centrifugal dewatering device. While squeezing the waste agricultural film with high water content out of the water, it also removes the remaining impurities, which is convenient for the final dehydration, so that the dehydration can come out. The waste agricultural film has the lowest impurity content and the best recycling effect.

7. The high-contamination waste agricultural film environmental protection regeneration production line of the present invention uses clean water to treat the waste agricultural film throughout the process, without adding any chemicals, purely physical cleaning treatment, so it will not produce any pollution, and the environmental protection effect is good.

8. A water circulation system is set up, and the clean water and waste water that need to be used in the treatment of waste agricultural film can be recycled and reused to reduce the waste of water resources.

In order to understand the present invention more clearly, the specific embodiments of the present invention will be described below with reference to the accompanying drawings.

Description of drawings

Fig. 1 is the structural representation of the present invention;

Fig. 2 is the structural representation of the axial flow centrifugal impurity removal device in the present invention;

Fig. 3 is the position schematic diagram of the dial plate and the fan plate in the present invention;

4 is a schematic structural diagram 1 of the friction washing device in the present invention;

Fig. 5 is the second structural schematic diagram of the friction washing device in the present invention;

Fig. 6 is the structural cutaway schematic diagram of the friction washing device in the present invention;

Among them, the reference numerals are:

100, agricultural film crushing device; 200, axial flow centrifugal impurity removal device; 300, friction washing device; 400, axial flow centrifugal dehydration device; 500, mesh aggregate bin; 600, film squeezing water device; 700, water circulation system; 800, granulation unit;

211, upper impurity removing body; 212, lower impurity removing body; 213, impurity removing support base; 214, first side wall; 215, second side wall; 220, screening cylinder; 221, screening hole; 230, rotating shaft; 240, impurity removal drive motor; 241, belt transmission mechanism; 250, dial plate; 260, impurity removal inlet; 270, impurity removal outlet; 280, fan plate; 290, reinforcing rib;

311, upper washing body; 312, lower washing body; 313, washing support seat; 314, first side plate; 315, second side plate; 321, upper half cage; 322, lower half cage; 330, first friction strip 340, rotating drum; 350, second friction strip; 360, washing drive motor; 370, washing inlet; 380, washing outlet; 390, water injection;

510, support leg; 520, water flow collecting tank; 530, water spout; 540, discharge port;

610. Drainage hole;

710, piping system; 720, waste water tank; 730, filtration system;

910, belt conveying device; 920, first spiral conveying device; 930, first conveying air duct; 940, second spiral conveying device; 950, second conveying air duct; 960, third conveying air duct.

Detailed ways

In order to solve the deficiencies and defects existing in the prior art, the present invention provides an environmentally friendly regeneration production line for high-impurity waste and old agricultural film, which has a relatively simple structure and good treatment effect.

As shown in Figure 1 to Figure 6, wherein, Figure 1 is a schematic structural diagram of the present invention, Figure 2 is a schematic structural diagram of an axial flow centrifugal impurity removal device in the present invention, and Figure 3 is a dial plate and a fan plate in the present invention. Fig. 4 is a schematic diagram of the structure of the friction washing device in the present invention, Fig. 5 is a schematic structural diagram of the friction washing device in the present invention, and Fig. 6 is a schematic cross-sectional view of the structure of the friction washing device in the present invention.

As shown in FIG. 1 , an environmentally friendly regeneration production line for high-impurity waste agricultural film of the present invention includes an agricultural film crushing device 100 for crushing, an axial flow centrifugal impurity removal device 200 for removing impurities, and a cleaning device for washing and cleaning. Friction washing device 300, axial flow centrifugal dewatering device 400 for dehydration.

Wherein, the agricultural film crushing device 100 includes two agricultural film crushers, and the agricultural film crusher is an existing machine for crushing agricultural film, which will not be repeated here. A feed inlet and a water inlet are arranged above the agricultural film crusher, and a discharge outlet is arranged below the agricultural film crusher. Specifically, the waste agricultural film placed on the raw material storage yard is transported to the feed port above the agricultural film crusher through the belt conveying device 910, and enters the agricultural film crusher for crushing.

A first screw conveying device 920 is connected to the discharge port below the agricultural film crusher, and the waste agricultural film crushed by the agricultural film crusher is transported to the axial flow centrifugal impurity removal device 200 for removal. miscellaneous.

Specifically, the first screw conveying device 920 includes a conveying slot, a screw conveying rod, and a driving motor for driving the screw conveying rod to rotate. The conveying trough of the first screw conveying device 920 is arranged obliquely, and the position where the output end is located is lower than the position where the input end is located.

The axial-flow centrifugal impurity removing device 200 includes two axial-flow centrifugal impurity removing machines, and the axial-flow centrifugal impurity removing machines include an impurity-removing frame, a screening drum 220, a rotating shaft 230, an impurity-removing drive motor 240, Several plate groups, impurity removal inlet 260, impurity removal outlet 270 and several fan plates 280 are shown in FIG. 2 and FIG. 3 .

Wherein, the trash removing frame includes a detachable upper trash removing body 211 and a lower trash removing body 212, and the lower trash removing body 212 is provided with a trash removing support seat 213;

The screening cylinder 220 is provided with a screening hole 221. The screening cylinder 220 includes an upper half cylinder and a lower half cylinder. In the lower impurity removing body 212, the upper half cylinder and the lower half cylinder are together to form a cylindrical cavity;

The rotating shaft 230 is coaxial with the screening drum 220 , one end of the rotating shaft 230 penetrates and is rotatably connected to the first side wall 214 of the trash removal frame, and the other end of the rotating shaft 230 penetrates and rotates connected to the second side wall 215 of the trash removal rack;

The impurity removal drive motor 240 is arranged on the lower impurity removal body 212, and drives the rotation shaft 230 to rotate through a transmission mechanism; specifically, the transmission mechanism is a belt transmission mechanism 241, which is in the prior art, I won't go into details here.

A plurality of the dial sets are arranged on the rotating shaft 230 along the axis direction of the rotating shaft 230 , each of the dial sets includes a plurality of dial pieces 250 , and the dial pieces 250 are connected to the rotating shaft. The axis direction of the 230 forms an acute angle and faces the direction of the second side wall 215; specifically, the dial plate 250 is a flat plate-like structure, its length direction is perpendicular to the axis direction of the rotating shaft 230, and its width direction It forms an acute angle with the axis direction of the rotating shaft 230 .

The impurity removal feed port 260 is arranged on the upper part of the first side wall 214 and inside the screening cylinder 220;

The impurity removal outlet 270 is arranged at the upper end of the upper impurity removal body 211 near the second side wall 215 , and the upper half cylinder is provided with an opening corresponding to the impurity removal outlet 270 ;and

Several of the fan plates 280 are arranged on the rotating shaft parallel to the axis of the rotating shaft 230, and are located directly below the impurity removal outlet 270; Its length direction is perpendicular to the axis direction of the rotating shaft 230 , and its width direction is parallel to the axis direction of the rotating shaft 230 .

In this preferred embodiment, a plurality of the dial groups are arranged on the rotating shaft 230 at equal intervals.

In this preferred embodiment, each of the dial sets includes four dial plates 250 , and the dial plates 250 are arranged at equal intervals along the circumference of the rotation shaft 230 .

In a preferred embodiment, the number of the fan plates 280 is four, and the fan plates 280 are arranged at equal intervals along the circumferential direction of the rotating shaft 230 .

The crushed waste agricultural film and the impurities on it enter the screening cylinder 220 through the impurity removal feed port 260, and the impurity removal drive motor 240 drives the rotating shaft 230 to rotate at a high speed, thereby driving the dial plate 250 on the rotating shaft 230 to rotate , the dial plate 250 generates radial and axial thrust, the radial force strikes and separates the waste agricultural film and the impurities attached to it, and the axial force pushes the waste agricultural film to make a spiral forward movement in the screening cylinder 220 . The light and tough waste agricultural film mainly flows along the axial direction, and the heavier impurities such as soil, straw and weeds move radially under the action of centrifugal force, hit the screening cylinder 220 , and fly out through the screening holes 221 . The lightweight waste agricultural film reaches the other end of the screening cylinder 220, and radial airflow is generated by the fan plate 280, and the fan plate 280 blows the waste agricultural film after impurity removal to the impurity removal outlet 270 for the next step.

The waste agricultural film processed by the axial flow centrifugal impurity remover is transported to a meshed aggregate bin 500 through the first conveying air duct 930 .

The reticulated collection bin 500 includes a support leg 510 and a water flow collection tank 520. Both ends of the water flow collection tank 520 are provided with water jets 530, and the bottom middle of the water flow collection tank 520 is provided with a discharger. The discharge port 540 is connected to the washing feed port 370 in the friction washing device 300 . The middle position of the bottom of the water flow collecting tank 520 is lower than the two ends, and the waste agricultural film flows to the lower discharge port 540 under the action of water spray from both ends of the water flow collecting tank 520, and then enters the friction Inside the washing device 300.

The friction washing device 300 is a spiral friction washing machine, which includes a washing frame, an outer friction cage, a rotating drum 340, a plurality of second friction bars 350, a washing drive motor 360, a washing inlet 370, and a washing outlet 380 and several water injection ports 390, as shown in Figures 4, 5 and 6.

Wherein, the washing rack includes a detachable and separated upper washing body 311 and a lower washing body 312, and a washing support seat 313 is provided at the lower part of the lower washing body 312;

The outer friction cage is composed of several first friction strips 330, and there is a gap between every two of the first friction strips 330. The outer friction cage includes an upper half cage 321 and a lower half cage 322. The cage 321 is set in the upper washing body 311, the lower half cage 322 is set in the lower washing body 312, and the upper half cage 321 and the lower half cage 322 together enclose a long cylindrical cavity ; Specifically, the two ends of the outer friction cage are respectively fixed inside the two side walls of the frame; in this preferred embodiment, the gap between every two of the first friction strips 330 is 2mm.

The rotating drum 340 is arranged in the outer friction cage and is coaxial with the outer friction cage; The other end of the rotating drum 340 passes through and is rotatably connected to the second side plate 315 of the frame;

The second friction strip 350 extends from one bottom surface to the other bottom surface along the outer side of the rotating drum 340, and forms an acute angle with the rotating shaft 230 of the rotating drum 340; specifically, the second friction strip 350 It is fixed on the outer side of the rotating drum 340 to form a helix, and the helix angle of the helix is in the range of 10° to 20°, that is, the second friction strip 350 and the rotating shaft of the rotating drum 340 are formed. The angle of the helix is in the range of 10° to 20°; in this preferred embodiment, the helix angle of the helix is 15°. In this preferred embodiment, there are 12 second friction strips 350 in total, and are symmetrically distributed on the outer side of the rotating drum 340 along the rotation axis of the rotating drum 340 .

The washing driving motor 360 is arranged on the lower washing body 312, and can drive the rotating drum 340 to rotate;

The washing feed port 370 is arranged at the upper end of the upper washing body 311 near the first side plate 314, and the upper half cage 321 is provided with an opening at a position corresponding to the washing feed port 370;

The washing outlet 380 is disposed at the lower end of the lower washing body 312 near the second side plate 315, and the lower half cage 322 is provided with an opening at a position corresponding to the washing outlet 380;

A plurality of the water injection ports 390 are arranged on the upper surface of the upper washing body 311, which are used to inject water into the outer friction cage.

The removed waste agricultural film and the impurities on it enter between the rotating drum 340 and the outer friction cage through the washing feed port 370, and the washing driving motor 360 drives the rotating drum 340 to rotate under the action of the reduction box. During the rotation of the rotating drum 340, the second friction strip 350 arranged on the outer surface of the rotating drum 340 drives the waste agricultural film and the impurities on it to make a spiral propulsion movement, and the waste agricultural film and the impurities on the scrap agricultural film and the impurities on the rotating drum 340 and the rotating drum 340. Under the co-extrusion of the outer friction cage, friction is generated, so as to separate the impurities such as soil, straw, weeds and so on adhering to the waste agricultural film. The clean waste and old agricultural film fragments are discharged from the washing outlet 380, and the next step is carried out.

The waste agricultural film washed by the screw friction washing machine is transported by the second screw conveying device 940 to the film water squeezing device 600, and the film water squeezing device 600 is an existing film water squeezing machine. The film water squeezing device 600 includes an inclined inner cavity, the bottom of the inclined inner cavity is provided with a drainage hole 610, the waste agricultural film enters from the higher position of the inclined inner cavity, and then flows from the lower inclined inner cavity position discharge. The waste agricultural film with high moisture content is pushed by the spiral blade of the film water squeezing device 600 to the conical discharge port. The structure of the second screw conveying device 940 is the same as that of the first screw conveying device 920 , and details are not described here.

The waste agricultural film discharged from the film water squeezing device 600 enters the axial flow centrifugal dewatering device 400 for dehydration treatment. The axial-flow centrifugal dehydration device 400 is an axial-flow centrifugal dehydrator, and the axial-flow centrifugal dehydrator is an existing machine for dehydration, which will not be repeated here.

The dehydrated waste agricultural film enters the next axial-flow centrifugal dehydrator through the second conveying air duct 950 for further dehydration. After secondary dehydration, the clean and dry waste agricultural film is transported by the third conveying air duct 960 to the semi-finished product warehouse or granulator for subsequent processing.

An environmentally friendly regeneration production line for high-contamination waste and old agricultural film of the present invention further includes a water circulation system 700, the water circulation system 700 includes a pipeline system 710 for supplying water required for the production process, a waste water tank 720 for collecting waste water after use, and a filter system 730 . The water circulation system 700 is used to provide the water required in the production process, collect the used waste water and convert it into the water required in the production process. Fresh water is injected into the agricultural film crusher, axial-flow centrifugal impurity remover and friction washing machine at the same time, and they are processed together with the waste agricultural film.

The working principle of the environmentally friendly regeneration production line for high-impurity waste and old agricultural film of the present invention is as follows:

The waste agricultural film is put into the inlet of the agricultural film crusher through the belt conveying device 910, and is crushed into film fragments of about 60mm×60mm to 100mm×100mm by water injection. The crushed waste agricultural film fragments fall into the feed port of the first screw conveying device 920, and the waste agricultural film fragments are transported from high to low through the screw blades to the impurity removal feed port 260 of the axial flow centrifugal impurity remover; the first The bottom of the screw conveying device 920 has a leak hole, which can discharge fine impurities and sewage. The waste and old agricultural film fragments are removed by the axial flow centrifugal impurity remover and then blown to the mesh aggregate bin 500 by the first conveying air duct 930 for collection. The waste agricultural film fragments are concentrated in the water flow collecting tank 520 at the bottom of the mesh collecting bin 500. Under the action of the jet water flow and the height difference at the two ends, the waste agricultural film fragments flow to the lower outlet in the middle, and enter the spiral friction washing machine. After washing the feed port 370, the waste agricultural film fragments are rubbed by the inner and outer friction strips of the spiral friction washer and washed by water flow, and the residual impurities attached to the waste agricultural film fragments are discharged from the gap of the outer friction strip; clean waste agricultural film is Under the action of the spiral motion, it is pushed to the washing outlet 380 for discharge. Then, the second screw conveying device 940 is lifted to the feeding port of the film water squeezing device 600; the clean waste agricultural film with high moisture content is pressed by the screw blade of the film water squeezing device 600 and pushed to the conical discharge port. Most of the water adsorbed on the waste agricultural film is discharged through the drainage holes 610 of the film water squeezing device 600 . The waste agricultural film squeezed through the water falls into the feed port of the axial flow centrifugal dehydrator. After the waste agricultural film is dehydrated, it is blown to the next axial flow centrifugal dehydrator through the second conveying air duct 950 . After secondary dehydration, the clean and dry waste agricultural film is blown by the third conveying air duct 960 to the semi-finished product warehouse or the feeding port of the granulator for subsequent finished product processing.

Compared with the prior art, the environmental protection regeneration production line of high-impurity waste agricultural film of the present invention has at least the following technical effects:

1. Set up an agricultural film crushing device. The waste agricultural film that needs to be recycled first enters the agricultural film crushing device for crushing, and after it is broken into smaller pieces, it is convenient for other subsequent processes.

2. The waste agricultural film broken into thin film fragments enters the impurity removal device for the first step of impurity removal. Since the waste agricultural film contains a large amount of impurities such as soil, straw, weeds, etc., the broken waste agricultural film first enters the removal of impurities. Impurity removal in the impurity device can effectively remove most of the impurities.

3. In the axial flow centrifugal impurity removing device of the present invention, the dial plate arranged on the rotating shaft forms an acute angle with the axis direction of the rotating shaft, so that during the rotating process of the rotating shaft, in addition to generating radial force to impact and separate waste agricultural products In addition to the film and impurities, it can also generate an axial force to push the waste agricultural film to move axially to the impurity removal outlet. Its structure is relatively simple, and the effect of removing impurities is good.

4. The friction washing device in the present invention is provided with a second friction strip that forms an acute angle with the rotating shaft of the rotating drum, and a first friction strip that has a gap with each other. When the rotating drum rotates, it drives the waste agricultural film to roll, and the first friction strip is Together with the second friction strip, the waste agricultural film is pressurized and rubbed to speed up the separation of impurities attached to the waste agricultural film, and the clean waste agricultural film can be transported to the discharge port. The structure is relatively simple, and the washing effect is better.

5. A mesh aggregate bin is added between the axial flow centrifugal impurity removal device and the friction washing device. Before washing the waste agricultural film, the water flow aggregate tank can remove impurities such as soil, straw and weeds. It is convenient to carry out the washing operation, so that the washing effect is better.

6. A film water squeezing device is added between the friction washing device and the axial flow centrifugal dewatering device. While squeezing the waste agricultural film with high water content out of the water, it also removes the remaining impurities, which is convenient for the final dehydration, so that the dehydration can come out. The waste agricultural film has the lowest impurity content and the best recycling effect.

7. The high-contamination waste agricultural film environmental protection regeneration production line of the present invention uses clean water to treat the waste agricultural film throughout the process, without adding any chemicals, purely physical cleaning treatment, so it will not produce any pollution, and the environmental protection effect is good.

8. A water circulation system is set up, and the clean water and waste water that need to be used in the treatment of waste agricultural film can be recycled and reused to reduce the waste of water resources.

The above-mentioned embodiment only represents an embodiment of the present invention, and its description is relatively specific and detailed, but it should not be construed as a limitation on the patent scope of the present invention. It should be noted that, for those skilled in the art, without departing from the concept of the present invention, several modifications and improvements can be made, which all belong to the protection scope of the present invention.

Claims (7)

1. The utility model provides a high miscellaneous old and useless plastic film environmental protection regeneration production line that contains which characterized in that includes:

the agricultural film crushing device (100), the agricultural film crushing device (100) is used for crushing waste agricultural films;

the axial flow type centrifugal impurity removal device (200), the axial flow type centrifugal impurity removal device (200) is used for removing impurities mixed in the waste pesticide film;

the friction washing device (300), the friction washing device (300) is used for washing and cleaning the waste agricultural film;

the axial flow type centrifugal dehydration device (400), the axial flow type centrifugal dehydration device (400) is used for dehydrating the waste agricultural film;

after the waste agricultural films are crushed by the agricultural film crushing device (100), the axial flow type centrifugal impurity removal device (200) is used for removing impurities, the waste agricultural films after impurity removal are washed and cleaned by the friction washing device (300), and finally the axial flow type centrifugal dehydration device (400) is used for dehydration;

the axial flow type centrifugal impurity removing device (200) comprises:

the impurity removing machine comprises an impurity removing machine frame, wherein the impurity removing machine frame comprises an upper impurity removing machine body (211) and a lower impurity removing machine body (212) which are detachably separated, and an impurity removing supporting seat (213) is arranged at the lower part of the lower impurity removing machine body (212);

the screening cylinder (220) is provided with screening holes (221), the screening cylinder (220) comprises an upper half cylinder and a lower half cylinder, the upper half cylinder is arranged in the upper impurity removing machine body (211), the lower half cylinder is arranged in the lower impurity removing machine body (212), and the upper half cylinder and the lower half cylinder jointly enclose to form a cylindrical cavity;

the rotating shaft (230), the rotating shaft (230) is coaxial with the screening cylinder (220), one end of the rotating shaft (230) penetrates out and is rotatably connected to the first side wall (214) of the impurity removing rack, and the other end of the rotating shaft (230) penetrates out and is rotatably connected to the second side wall (215) of the impurity removing rack;

the impurity removal driving motor (240) is arranged on the lower impurity removal machine body (212), and drives the rotating shaft (230) to rotate through a transmission mechanism (241);

the plurality of dial plate groups are arranged on the rotating shaft (230) along the axial direction of the rotating shaft (230), each dial plate group comprises a plurality of dial plate pieces (250), and each dial plate piece (250) forms an acute angle with the axial direction of the rotating shaft (230) and faces to the direction of the second side wall (215);

the impurity removal feed inlet (260) is formed in the upper portion of the first side wall (214), and is positioned inside the screening drum (220);

the impurity removal discharge hole (270), the impurity removal discharge hole (270) is formed in the tail end of the upper portion of the upper impurity removal machine body (211) close to the second side wall (215), and an opening corresponding to the impurity removal discharge hole (270) is formed in the upper half cylinder; and

the fan plates (280), the fan plates (280) and the axis of the rotating shaft (230) are arranged on the rotating shaft (230) in parallel, and are positioned under the impurity removal discharge port (270);

the friction washing device (300) comprises:

the washing machine comprises a washing machine frame, a washing machine frame and a washing machine frame, wherein the washing machine frame comprises an upper washing machine body (311) and a lower washing machine body (312) which are detachably separated, and a washing supporting seat (313) is arranged at the lower part of the lower washing machine body (312);

the outer friction cage is composed of a plurality of first friction strips (330), a gap is reserved between every two first friction strips (330), the outer friction cage comprises an upper half cage (321) and a lower half cage (322), the upper half cage (321) is arranged in the upper washing machine body (311), the lower half cage (322) is arranged in the lower washing machine body (312), and the upper half cage (321) and the lower half cage (322) jointly enclose a long cylindrical cavity;

a rotating drum (340), said rotating drum (340) disposed within said outer friction cage and coaxial therewith; one end of the rotary drum (340) penetrates out and is rotatably connected with a first side plate (314) of the washing rack, and the other end of the rotary drum (340) penetrates out and is rotatably connected with a second side plate (315) of the rack;

a plurality of second rubbing strips (350), wherein the second rubbing strips (350) extend from one bottom surface to the other bottom surface along the outer side surface of the rotating drum (340) and form an acute angle with the rotating shaft of the rotating drum (340); the acute angle is within the range of 10-20 degrees;

a washing driving motor (360), wherein the washing driving motor (360) is arranged on the lower washing machine body (312) and can drive the rotary drum (340) to rotate;

the washing feed port (370), the washing feed port (370) is arranged at the upper end of the upper washing machine body (311) close to the first side plate (314), and an opening is formed in the upper half cage (321) corresponding to the washing feed port (370); and

the washing discharge hole (380) is formed in the lower end, close to the second side plate (315), of the lower washing machine body (312), and an opening is formed in the position, corresponding to the washing discharge hole (380), of the lower half cage (322).

2. The high-impurity-content waste agricultural film environment-friendly regeneration production line as claimed in claim 1, wherein a plurality of the deflector groups are arranged on the rotating shaft (230) at equal intervals.

3. The high impurity-containing waste agricultural film environment-friendly regeneration production line as claimed in claim 2, wherein each deflector group comprises 4 deflector plates (250), and the deflector plates (250) are circumferentially arranged at equal intervals along the rotating shaft (230).

4. The high impurity content waste agricultural film environment-friendly regeneration production line as claimed in claim 3, wherein the number of the fan plates (280) is 4, and the fan plates (280) are circumferentially arranged at equal intervals along the rotating shaft (230).

5. The high impurity content waste agricultural film environment-friendly regeneration production line as claimed in claim 1, further comprising a net-shaped collecting bin (500), wherein the net-shaped collecting bin (500) is arranged between the axial flow type centrifugal impurity removing device (200) and the friction washing device (300); the reticular material collecting bin (500) comprises supporting legs (510) and a water flow collecting groove (520), water spray openings (530) are formed in two ends of the water flow collecting groove (520), a discharge opening (540) is formed in the middle of the bottom of the water flow collecting groove (520), and the discharge opening (540) is connected with a feeding opening of the friction washing device (300); the middle position of the bottom of the water flow collecting groove (520) is lower than the positions of the two ends.

6. The environmental-friendly recycling production line for high-impurity-content waste agricultural films as claimed in claim 1, further comprising a film wringing device (600), wherein the film wringing device (600) is arranged between the friction washing device (300) and the axial-flow type centrifugal dewatering device (400); the film wringing device (600) comprises an inclined inner cavity, and a water drainage hole (610) is formed in the bottom of the inclined inner cavity.

7. The high-impurity waste agricultural film environment-friendly recycling production line according to claim 1, further comprising a water circulation system (700), wherein the water circulation system (700) comprises a pipeline system (710) for providing water required by the production process, a waste water tank (720) for collecting used waste water, and a filtering system (730).

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