CN209257283U - A screening device for plastic recycling - Google Patents

Abstract

The utility model discloses a screening plant for plastics recycling, including winnowing box, fan, screen cloth, crushing box, No. two crushing boxes, screening box and No. two screening boxes, the welding of one side of the top of winnowing box has the backup pad, and the welding of one side of backup pad far away from winnowing box has the riser, and the top of riser is through the one end of connecting pin connection screen cloth, and the welding of three sides of the top of screen cloth has the baffle, and the screen cloth is the open state towards one side of winnowing box; the two sides of the supporting plate are both obliquely provided with gas springs, and the tail ends of piston rods of the gas springs are both fixed on the two sides of the bottom end of the screen; through setting up the screen cloth, can reach the effect of preliminary screening, set up the air spring in the below of screen cloth again, can drive the screen cloth through air spring work and remove, and then make the downward sloping appear in the screen cloth, make the mixture drop and carry out secondary screening work in the air separator, separately handle the plastics of light and heavier plastics.

Description

A screening device for plastic recycling

technical field

The utility model relates to the field of plastic recycling, in particular to a screening device for plastic recycling.

Background technique

Plastic recycling refers to the use of certain recycling processes to recycle and reuse waste plastics to achieve the purpose of turning waste into treasure. At present, my country's waste plastics are mainly plastic films, plastic yarns and woven products, foam plastics, plastic packaging boxes and containers, daily-use plastic products, plastic bags and agricultural mulch films.

In the process of plastic recycling, since a series of processing is required for the recycled plastic, it is necessary to go through a screening process before that to remove the soil, metal debris, sand and gravel in the recycled plastic. However, the existing screening equipment is relatively simple, and can only achieve single-stage screening, and cannot fully screen the mixed substances in plastics, which is not conducive to the subsequent processing of plastics.

Utility model content

The main purpose of the utility model is to provide a screening device for plastic recycling, which can effectively solve the problems in the background technology.

In order to achieve the above object, the technical scheme that the utility model takes is:

A screening device for recycling plastics, comprising winnowing box, fan, screen, No. 1 crushing box, No. 2 crushing box, No. 1 screening box and No. 2 screening box, the top of the winnowing box One side of the support plate is welded with a support plate, and the side of the support plate away from the winnowing box is welded with a vertical plate, the top of the vertical plate is connected to one end of the screen through a connecting pin, and the top three sides of the screen are welded The side of the screen facing the winnowing box is in an open state; both sides of the support plate are inclined upwards and provided with gas springs, and the ends of the piston rods of the gas springs are fixed on the two ends of the bottom of the screen. side.

Preferably, several fans are installed on one side of the winnowing box, and a material guide port is opened on the side opposite to the fan on the winnowing box, and a material guide pipe is connected to the outside of the material guide port, and the material guide pipe The outlet end of the air separation box is connected to the inlet end of the No. 2 crushing box, and the discharge port at the bottom of the winnowing box is connected to the inlet end of the No. 1 crushing box.

Preferably, the No. 1 crushing box and the No. 2 crushing box are provided with an inner box, the bottom of the inner box is open, and the bottom of the inner box is installed on the No. 1 crushing box and the No. 2 crushing box through bearings. On the inner wall of the bottom plate of the outer box of the No. 1 crushing box, and the bottom plate of the outer box is provided with a discharge port; a circle of sprockets is welded on the outer wall of the inner box, and the No. 1 crushing box and the No. 2 crushing box No. 2 motors are installed on one side, and the output shaft ends of the No. 2 motors are all fixed with gears, and the gears are all meshed with their corresponding sprockets.

Preferably, several cutting blades are fixed on the inner wall of the inner box, and a No. 1 motor is installed on the top of the outer box, and the output shaft of the No. 1 motor is connected to the central shaft in the inner box through a coupling. Several mixing knives are fixed equidistantly on the central axis.

Preferably, the outlets of the No. 1 crushing box and the No. 2 crushing box are respectively connected to the feed ports of the No. 1 screening box and the No. 2 screening box through conduits, and the No. 1 screening box and the No. 2 screening box The bottom of the inside of the box is provided with an inclined downward filter screen, and a discharge port is provided on one side of the lower end of the filter screen; one side of the top of the No. 1 screening box and the No. 2 screening box All of them are provided with inclined downward discharge openings, and a dress frame is placed under the discharge openings.

Preferably, a water tank is provided below the No. 1 screening box and the No. 2 screening box, and the water outlets of the two water tanks are respectively connected to the water inlets of the No. 1 screening box and the No. 2 screening box through water pipes, and A pump is installed on the water delivery pipe.

Preferably, the bottoms of the No. 1 screening box and the No. 2 screening box are provided with water outlets, and solenoid valves are installed in all the water outlets.

Compared with the prior art, the utility model has the following beneficial effects:

1. By setting baffles on the three sides of the screen, when the recycled plastic mixture is poured into the screen, the mixture will not fall through the edge, and at the same time, the screen can perform preliminary screening of the mixture; A gas spring is set under the screen, which can drive the screen to move through the gas spring, and then make the screen tilt downward, so that the mixture falls into the winnowing box for secondary screening, and the light plastic and Heavier plastics are handled separately;

2. By setting the No. 1 crushing box and the No. 2 crushing box, larger plastics (such as plastic bottles) can be crushed, and impurities can be avoided inside the plastics, and at the same time, subsequent crushing work can be reduced;

3. By setting the No. 1 screening box and the No. 2 screening box, by passing the water in the water tank into the No. 1 screening box and the No. 2 screening box, the plastic will float and other impurities will sink to the bottom of the water. When the height reaches a certain height, the water will be discharged through the discharge port, and at the same time, it can drive the plastic to be discharged into the storage frame for collection, and then the screening work is realized. It is not only simple, but also the graded screening can achieve good screening effect.

Description of drawings

Fig. 1 is the overall structural diagram of a kind of screening device that is used for plastic recycling of the present utility model;

Fig. 2 is the installation drawing of the screen cloth of a kind of screening device that is used for plastic recycling of the present utility model;

Fig. 3 is a structural diagram of a screen of a screening device for plastic recycling in the present invention;

Fig. 4 is a structural diagram of a support plate of a screening device for plastic recycling in the present invention;

Fig. 5 is an internal structure diagram of an inner box of a screening device for plastic recycling of the present invention;

Fig. 6 is a side view of the connection between the No. 1 screening box and the water tank of a screening device for plastic recycling of the present invention.

In the figure: 1. Wind selection box; 2. Fan; 3. Support plate; 4. Screen; 5. Vertical plate; 6. Gas spring; 7. Material guide pipe; Crushing box; 10. No. 1 motor; 11. Inner box; 12. Bearing; 13. Gear; 14. Chain teeth; 15. No. 2 motor; 16. No. 1 screening box; 17. No. 2 screening box; 18 , Discharging port; 19, filter screen; 20, dress frame; 21, water tank; 22, baffle; 23, cutting blade; 24, central axis; 25, mixing knife; 26, water pipe; 27, pump.

Detailed ways

In order to make the technical means, creative features, goals and effects achieved by the utility model easy to understand, the utility model will be further elaborated below in conjunction with specific embodiments.

Example 1

As shown in Figure 1-4, a screening device for plastic recycling, including winnowing box 1, fan 2, screen 4, No. 1 crushing box 8, No. 2 crushing box 9, and No. 1 screening box 16 With No. 2 screening box 17, one side of the top of winnowing box 1 is welded with support plate 3, and the side of support plate 3 far away from winnowing box 1 is welded with vertical plate 5, and the top of vertical plate 5 connects screen by connecting pin One end of the net 4, the top three sides of the screen 4 are welded with baffles 22, and the side of the screen 4 facing the winnowing box 1 is in an open state; both sides of the support plate 3 are inclined upwards and are provided with a gas spring 6, and the gas spring The ends of the piston rod of 6 are all fixed on both sides of the bottom of screen cloth 4.

In this embodiment, by setting baffles 22 on three sides of the screen 4, when the recovered plastic mixture is poured on the screen 4, the mixture will not fall through the edge, and at the same time, the screen 4 can carry out the mixture Preliminary sieving work; then a gas spring 6 is set under the screen 4, which can drive the screen 4 to move through the gas spring 6, and then make the screen 4 tilt downward, so that the mixture falls into the winnowing box 1.

Example 2

As shown in Figure 1 and Figure 5, several fans 2 are installed on one side of the winnowing box 1, and a material guide port is opened on the side opposite to the fan 2 on the winnowing box 1, and a guide pipe is connected outside the feed guide port 7. The outlet end of the material guide pipe 7 is connected to the inlet end of the No. 2 crushing box 9, and the discharge port at the bottom of the winnowing box 1 is connected to the inlet end of the No. 1 crushing box 8; The inside is all provided with inner box 11, and the bottom of inner box 11 is an open state, and the bottom of inner box 11 is installed on the inner wall of the bottom plate of the outer box of No. 1 pulverizing box 8 and No. 2 pulverizing box 9 by bearing 12, and The bottom plate of this outer box is provided with discharge opening; On the outer wall of inner box 11, a circle of chain teeth 14 is welded, No. 1 crushing box 8 and the side of No. 2 crushing box 9 are equipped with No. The output shaft end of 15 is all fixed with gear 13, and gear 13 all is meshed with its corresponding sprocket 14; On the inner wall of inner case 11, several cutting blades 23 are fixed, and No. 1 motor 10 and No. 1 motor are installed on the top of outer case. The output shafts of the motor 10 are all connected to the central shaft 24 in the inner case 11 through a shaft coupling, and several stirring knives 25 are fixed equidistantly on the central shaft 24 .

In this embodiment, by arranging the winnowing box 1, secondary screening can be carried out in the winnowing box 1, and light plastics and heavier plastics can be processed separately; by setting No. 1 smashing box 8 and No. 2 smashing box 9. It can crush larger plastics (such as plastic bottles), avoid impurities wrapped inside these plastics, and reduce subsequent crushing work.

Example 3

As shown in Figures 1 and 6, the discharge ports of No. 1 crushing box 8 and No. 2 crushing box 9 are respectively connected to the feed ports of No. 1 screening box 16 and No. 2 screening box 17 through conduits. The inner bottom of case 16 and No. two screening case 17 is all provided with the screen pack 19 that is inclined downwards, and the side that is positioned at the low end of screen pack 19 offers discharge port; No. one screen case 16 and No. One side of the top of the No. 1 screening box 17 is provided with a discharge opening 18 that is inclined downward, and a dress frame 20 is placed below the discharge opening 18; Water tanks 21 are all provided, and the water outlets of the two water tanks 21 are respectively connected to the water inlets of the No. 1 screening box 16 and the No. 2 screening box 17 through the water delivery pipe 26, and the pump 27 is installed on the water delivery pipe 26; The bottoms of sub-case 16 and No. 2 screening case 17 are all provided with water outlets, and electromagnetic valves are all installed in all water outlets.

In this embodiment, by setting No. 1 screening box 16 and No. 2 screening box 17, by entering the water in the water tank 21 into No. 1 screening box 16 and No. 2 screening box 17, the plastic is floated and other impurities When it sinks into the bottom of the water, when the height of the water reaches a certain height, the water will be discharged through the discharge port 18, and at the same time, it can drive the plastic to be discharged into the storage frame 20 for collection, and then the screening work is not only simple, but also graded and screened A good screening effect can be achieved.

It should be noted that the utility model is a screening device for recycling plastics. When in use, the recycled plastics are first poured into the screen 4 for preliminary screening, and then the gas spring 6 is operated to drive the screen 4 Tilt to the winnowing box 1 until all the mixture on the screen 4 enters the winnowing box 1, and then the falling mixture is blown by the fan 2, so that the lighter plastic is blown into the material guide pipe 7, and then falls again. In the No. 2 crushing box 9, the heavier plastics fall into the No. 1 crushing box 8, and then the No. 1 motor 10 works to drive the stirring knife 25 to stir, and the No. 2 motor 15 works to drive the gear 13 to work. The position located on the sprocket 14 is provided with a notch, and the gear 13 extends into the notch to mesh with the sprocket 14, and then the gear 13 works to drive the sprocket 14 on the inner box 11 to rotate, so that the sprocket 14 rotates and then drives the inner box. 11 rotates, so that the cutting blade 23 on the inner wall of the inner box 11 rotates accordingly, which can make the cutting blade 23 cooperate with the mixing knife 25 to speed up the crushing work of the plastic; after the plastic is crushed, it enters the No. 1 sieve through the discharge port at the bottom In the sub-box 16 and the No. 2 screening box 17, the No. 1 screening box 16 and the No. 2 screening box 17 are filled with half a box of water. After the mixture enters, the impurities sink to the bottom of the water, and the plastic floats on the water surface, and then Inject water until the water overflows, and drive the plastic to enter into the dress frame 20 through the discharge port 18. The top of the water tank 21 below the dress frame 20 is in an open state, so that the water entering the dress frame 20 can be returned to the water tank 21. When a After the plastics in the No. 1 screening box 16 and the No. 2 screening box 17 have been discharged, the solenoid valve is opened, so that the water in the No. 1 screening box 16 and the No. 2 screening box 17 flows back into the water tank 21 through the water outlet. At this time, the water-insoluble impurities are filtered by the filter screen 19, and then the discharge port is opened to allow the impurities to be discharged.

The basic principles and main features of the present utility model and the advantages of the present utility model have been shown and described above. Those skilled in the art should understand that the utility model is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions only illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model The new model also has various changes and improvements, and these changes and improvements all fall within the scope of the claimed utility model. The scope of protection required by the utility model is defined by the appended claims and their equivalents.

Claims (7)

1. A screening device for plastic recycling, including winnowing box (1), fan (2), screen (4), No. 1 crushing box (8), No. 2 crushing box (9), No. 1 The screening box (16) and No. 2 screening box (17) are characterized in that: a support plate (3) is welded on one side of the top of the winnowing box (1), and the support plate (3) is far away from the wind One side of the selection box (1) is welded with a vertical plate (5), the top of the vertical plate (5) is connected to one end of the screen (4) through a connecting pin, and the top three sides of the screen (4) are welded with The baffle (22), the side of the screen (4) facing the winnowing box (1) is open; both sides of the support plate (3) are provided with gas springs (6) inclined upwards, the The ends of the piston rod of the gas spring (6) are all fixed on both sides of the bottom of the screen cloth (4). 2. A screening device for plastic recycling according to claim 1, characterized in that several fans (2) are installed on one side of the winnowing box (1), and the winnowing box ( 1) On the side opposite to the blower fan (2), there is a material guide port, which is connected with a material guide tube (7), and the outlet end of the material guide tube (7) is connected to the No. 2 crushing box (9) The inlet end of the winnowing box (1) is connected to the inlet end of the No. 1 crushing box (8). 3. A screening device for plastic recycling according to claim 1, characterized in that: the No. 1 crushing box (8) and the No. 2 crushing box (9) are both equipped with inner boxes (11 ), the bottom end of the inner box (11) is open, and the bottom end of the inner box (11) is installed on the outside of the No. 1 crushing box (8) and the No. 2 crushing box (9) The inner wall of the bottom plate of the box, and the bottom plate of the outer box is provided with a discharge port; the outer wall of the inner box (11) is welded with a circle of chain teeth (14), and the No. 1 crushing box (8) and the second No. 2 motor (15) is installed on one side of the No. 2 crushing box (9), and the output shaft ends of the No. 2 motor (15) are fixed with gears (13), and the gears (13) are all connected to their corresponding chains. Teeth (14) are meshed. 4. A screening device for plastic recycling according to claim 3, characterized in that: several cutting blades (23) are fixed on the inner wall of the inner box (11), and the top of the outer box is installed There is a No. 1 motor (10), the output shaft of the No. 1 motor (10) is connected to the central shaft (24) in the inner box (11) through a coupling, and several mixing knife (25). 5. A screening device for plastic recycling according to claim 1, characterized in that: the outlets of the No. 1 crushing box (8) and the No. 2 crushing box (9) are respectively connected to a No. 1 screening box (16) and the feed inlet of No. 2 screening box (17), the inner bottoms of the No. 1 screening box (16) and No. The lower filter screen (19), and a discharge port is opened on the side of the lower end of the filter screen (19); the first screen box (16) and the top of the second screen box (17) Both sides are provided with discharge openings (18) which are inclined downwards, and a container frame (20) is placed under the discharge openings (18). 6. A screening device for plastic recycling according to claim 1, characterized in that water tanks ( 21), the water outlets of the two water tanks (21) are respectively connected to the water inlets of the No. 1 screening box (16) and the No. 2 screening box (17) through the water delivery pipe (26), and the There is a pump (27). 7. A screening device for plastic recycling according to claim 6, characterized in that: the bottoms of the No. 1 screening box (16) and the No. 2 screening box (17) are provided with outlets All water outlets are equipped with solenoid valves.