Discharging structure for waste plastic recycling and screening

Abstract

The utility model relates to the technical field of plastic recovery and screening, in particular to a blanking structure for waste plastic recovery and screening, which comprises a screening box, two first discharge holes are formed in the side wall of the screening box, and a second discharge hole is formed in the bottom surface of the screening box; the four supporting legs are symmetrically and fixedly connected to the bottom face of the screening box. The number of the screening units is two, and the two screening units are slidably connected into the screening box. According to the screening device, the upper screening plate and the lower screening plate with a certain inclination angle are designed, accumulation and blockage of materials in the screening process are reduced, the first motor is started to enable the screening plates to adopt a dynamic screening mode of swinging left and right back and forth, the materials are continuously impacted and dispersed in the screening process, and the screening effect is further improved. An electric telescopic rod is controlled to extend to enable a sealing plate to ascend until a notch is opened, then materials can be smoothly discharged to a material guide plate through inclination and swing of a screening plate, and then a spiral conveying mechanism is arranged below the material guide plate.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of plastic recycling and screening, in particular to a discharging structure for waste plastic recycling and screening. BACKGROUND

[0002] Waste plastic recycling is an important environmental protection and resource recycling process, which helps to reduce environmental pollution and save resources. First, it needs to be classified according to its material and type. The classified waste plastics are broken into small pieces or particles. The broken waste plastics are screened, and then washed, granulated and other processes. Efficient and accurate screening is the key to realizing plastic resource recycling.

[0003] The traditional screening method is generally static screen, fixed vibrating screen, etc. When facing small particle size, high viscosity or easy caking materials in waste plastics, there are problems such as low screening efficiency and easy blocking. How to realize the rapid dispersion, effective separation and smooth discharge of materials is a technical problem to be solved at present. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a discharging structure for waste plastic recycling and screening to solve the problems in the above background technology.

[0005] To achieve the above purpose, the utility model provides the following technical scheme:

[0006] A discharging structure for waste plastic recycling and screening, comprising:

[0007] A screening box with two discharge ports one on the side wall and a discharge port two on the bottom surface;

[0008] Four support legs symmetrically fixed to the bottom surface of the screening box;

[0009] Two screening units, each slidingly connected to the inside of the screening box;

[0010] Two guide plates, each fixed to the inside of the two discharge ports one;

[0011] A spiral conveying mechanism arranged on one side of the screening box with the discharge port one.

[0012] Further, the spiral conveying mechanism comprises:

[0013] A mounting frame;

[0014] Two fixed seats, each fixed to the outer side wall of the mounting frame;

[0015] Two housings, one end of which is fixedly connected with the inner side wall of the mounting frame; the inner part of each of the two housings is rotatably connected with a rotating shaft, and the outer wall of each of the two rotating shafts is fixedly connected with a spiral blade; the outer wall near the two ends of the housing is respectively provided with a material receiving port and a material discharging port;

[0016] Two second motors are fixedly connected with the top surface of the two fixed seats, and the motor shafts of the two second motors are respectively in transmission connection with one end of the two rotating shafts;

[0017] A support frame one is fixedly connected with the outer wall of the lower housing and the inner bottom surface of the mounting frame;

[0018] A support frame two is fixedly connected with the outer wall of the two housings.

[0019] Preferably, two opposite inner side walls of the screening box are provided with two sliding grooves.

[0020] Further, the screening unit comprises:

[0021] A screening plate is provided with a notch near one end of the material discharging port, and the position of the notch of the screening plate is fixedly connected with a blocking unit 1;

[0022] Four sliding blocks are fixedly connected with the two opposite side walls of the screening plate, and the sliding blocks on the two sides of the screening unit are respectively in sliding connection with the two sliding grooves;

[0023] Two fixed plates are fixedly connected with the two opposite outer side walls of the screening plate;

[0024] A strip-shaped frame is arranged on one side of the screening plate;

[0025] Two connecting rods are fixedly connected with the two outer side walls of the strip-shaped frame, and the other side of the two connecting rods is respectively fixedly connected with the side wall of the two sliding blocks;

[0026] A moving rod is slidingly connected with the inner wall of the strip-shaped frame;

[0027] A connecting block is fixedly connected with the end part of the moving rod, and the other side wall away from the position of the moving rod is fixedly connected with a transmission rod;

[0028] A first motor is fixedly connected with the outer wall of the screening box, and the motor shaft is in transmission connection with the transmission rod.

[0029] Preferably, the screen hole of the screening plate on the upper side is larger than the screen hole of the screening plate on the lower side.

[0030] Further, the blocking unit comprises:

[0031] The inner wall of the sealing plate is slidably connected with the outer wall and the screening plate with a gap;

[0032] The connecting frames are two in number and are fixedly connected to the two top sides of the sealing plate respectively;

[0033] The electric telescopic rods are two in number, the bottom ends of the two electric telescopic rods are fixedly connected to the top surfaces of the two fixed plates respectively, and the output ends of the two electric telescopic rods are fixedly connected to the bottom surfaces of the two connecting frames respectively.

[0034] Preferably, the end sides of the two material guiding plates close to the interior of the screening box are fixedly connected with baffle plates.

[0035] Compared with the prior art, the utility model has the advantages that:

[0036] 1. The screening area and the screening time are increased, and the screening efficiency is improved by designing the two groups of screening plates with a certain inclination angle, utilizing the gravity to assist the material flow, and setting the inclination angle to help reduce the accumulation and blockage of the material in the screening process.

[0037] 2. The gap is set at the lowest point of the two screening plates, the gap is closed by the sealing plate, the sealing plate is opened by controlling the electric telescopic rod to extend, the material is smoothly discharged to the material guiding plate by the inclination and swing of the screening plate after the screening is completed, and the spiral conveying mechanism is arranged below the material guiding plate to convey the screened material to the subsequent processing equipment or the collecting device. BRIEF DESCRIPTION OF DRAWINGS

[0038] Figure 1 is a whole structure schematic view of a discharging structure for waste plastic recycling and screening according to the utility model;

[0039] Figure 2 is a cross-sectional structure schematic view of a discharging structure for waste plastic recycling and screening according to the utility model;

[0040] Figure 3 is a cross-sectional structure schematic view of a screening box according to the utility model;

[0041] Figure 4 is a screening unit structure schematic view according to the utility model;

[0042] Figure 5 is an enlarged schematic view of an A area structure according to the utility model.

[0043] In the figure: 100, screening box; 110, support leg; 111, discharge port one; 112, discharge port two; 113, chute; 120, screening unit; 121, screening plate; 122, sliding block; 123, fixed plate; 124, strip frame; 125, connecting rod; 126, moving rod; 127, connecting block; 128, transmission rod; 129, motor one; 130, guide plate; 131, baffle; 140, plugging unit; 141, sealing plate; 142, connecting frame; 143, electric telescopic rod; 200, spiral conveying mechanism; 210, mounting frame; 211, fixed seat; 220, shell; 221, material receiving port; 222, rotating shaft; 223, spiral blade; 224, discharge port; 225, motor two; 230, support frame one; 231, support frame two. DETAILED DESCRIPTION

[0044] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0045] Please refer to Figures 1-5 In the embodiments of the present application, a discharging structure for waste plastic recycling and screening includes a screening box 100, two discharge ports one 111 are formed in the side wall of the screening box 100, a discharge port two 112 is arranged on the bottom surface of the screening box 100, four support legs 110 are fixedly connected to the bottom surface of the screening box 100 in a symmetrical manner, two screening units 120 are slidably connected to the inside of the screening box 100, a guide plate 130 is fixedly connected to the inside of each of the two discharge ports one 111, and a spiral conveying mechanism 200 is arranged on one side of the screening box 100.

[0046] Specifically, the broken waste plastics are poured into the screening units 120 from the top of the screening box 100, the two screening units 120 are stacked in the inside of the screening box 100 and correspond to the two discharge ports one 111 respectively, the waste plastics in the upper screening unit 120 are screened, the waste plastics that meet the screening criteria and are smaller than the screen hole are left in the inside and fall into the lower screening unit 120 for re-screening, the waste plastics that pass through the lower screen hole are discharged from the discharge port two 112, and the waste plastics on the two screening units 120 fall into the spiral conveying mechanism 200 through the guide plate 130 at the discharge port one 111 and are conveyed to the respective collection areas by the spiral conveying mechanism 200, which is convenient for subsequent processing.

[0047] Embodiment one

[0048] AsFigures 3-5 As shown, in this embodiment, two grooves 113 are provided on each of the two opposite inner sidewalls of the screening box 100. The screening unit 120 includes a screening plate 121. A notch is provided on the end side of the screening plate 121 near the discharge port 111. Two sliders 122 are fixedly connected to each of the two opposite sidewalls of the screening plate 121. The sliders 122 located on both sides of the screening unit 120 are slidably connected to the two grooves 113 on the two inner sidewalls of the screening box 100. Fixed plates 123 are fixedly connected to the two opposite outer sidewalls of the screening plate 121. Two sliders 122 located on one side of the screening plate 121 are fixedly connected to the two grooves 113. Each of the two connecting rods 125 is fixedly connected to a connecting rod 125. A strip frame 124 is fixedly connected between the two connecting rods 125. A moving rod 126 is slidably connected to the inner wall of the strip frame 124. A connecting block 127 is fixedly connected to the end of the moving rod 126. A transmission rod 128 is fixedly connected to the other side wall of the connecting block 127 away from the moving rod 126. A motor 129 is fixedly connected to the outer wall of the screening box 100. The motor shaft of the motor 129 passes through the side wall of the screening box 100 and is connected to the transmission rod 128. The screen holes of the upper screening plate 121 are larger than those of the lower screening plate 121.

[0049] In this embodiment, the sieve holes of the upper sieve plate 121 are larger than those of the lower sieve plate 121, and both sieve plates 121 are inclined at a certain angle. The notch is opened at the lowest point of the inclination. After the crushed waste plastic is put into the upper sieve plate 121, the motor 129 is started. The motor shaft of the motor 129 is driven by the transmission rod 128, which causes the connecting block 127 to drive the moving rod 126 to rotate and move along the inner wall groove of the strip frame 124. The strip frame 124 is connected by the connecting rod 128. 25 is fixedly connected to slider 122, and slider 122 is slidably connected to chute 113. When connecting block 127 rotates, screening plate 121 swings left and right around the ground as the axis, which promotes the dispersion and stratification of materials. Waste plastic that fits the screen holes of the screening plate 121 remains on its surface, while waste plastic smaller than the screen holes falls to the second screening plate 121 for further screening until the small particles of plastic in the waste plastic on the second layer are screened out and discharged from the bottom outlet 112.

[0050] like Figures 1-2 As shown, in this embodiment, baffles 131 are fixedly connected to the ends of the two guide plates 130 near the inside of the screening box 100.

[0051] The screw conveyor mechanism 200 includes a mounting frame 210. Two fixed seats 211 are fixed to the outer side wall of the mounting frame 210. Two outer shells 220 are fixedly connected to the inner side wall of the mounting frame 210. Rotating shafts 222 are rotatably connected inside the two outer shells 220. Spiral blades 223 are fixedly connected to the outer walls of the two rotating shafts 222. Material inlet 221 and discharge outlet 224 are respectively provided on the outer walls of the outer shells 220 near both ends. Motors 225 are fixedly connected to the top surface of the two fixed seats 211. The motor shafts of the two motors 225 pass through the mounting frame 210 and are respectively connected to one end of the two rotating shafts 222. A support frame 230 is fixedly connected to the outer wall of the lower outer shell 220 and the inner bottom surface of the mounting frame 210. Support frames 231 are fixedly connected to the outer walls of the two outer shells 220.

[0052] In specific implementation, the screw conveyor 200 is set on the side near the discharge port 111, and the two receiving ports 221 are respectively located below the two baffles 131. The two baffles 131 have obvious inclination angles, so that the waste plastics left on the two screening plates 121 fall from the baffles 131 into the outer shell 220 from the receiving ports 221 under the action of gravity. The two motors 225 are started, so that the motor shafts of the motors 225 are driven by the rotating shaft 222, so that the rotating screw blades 223 transport the screened waste plastics inside the outer shell 220 forward and discharge them from the discharge port 224 for collection. The guide plate 130 is fixedly connected to the end side near the inside of the screening box 100 with baffles 131 to help guide the screened waste plastics to the corresponding positions.

[0053] Example 2

[0054] like Figure 4 As shown, in this embodiment, a sealing unit 140 is fixedly connected to the notch in the screening plate 121. The sealing unit 140 includes a sealing plate 141. The outer wall of the sealing plate 141 is slidably connected to the inner wall of the screening plate 121 where the notch is located. A connecting frame 142 is fixedly connected to both top sides of the sealing plate 141. An electric telescopic rod 143 is provided on both sides of the sealing plate 141. The bottom ends of the two electric telescopic rods 143 are fixedly connected to the top surfaces of the two fixed plates 123, respectively. The output ends of the two electric telescopic rods 143 are fixedly connected to the bottom surfaces of the two connecting frames 142, respectively.

[0055] In the specific implementation, when the screening unit 120 swings left and right to screen, the electric telescopic rod 143 is retracted to make the sealing plate 141 block the gap position, so as to avoid that the waste plastics which are not screened are thrown out along the gap due to the swing of the screening plate 121, and when the screening is finished, the electric telescopic rod 143 can be controlled to be extended, so that the sealing plate 141 moves upward, so that the gap is exposed. Since the screening plate 121 has a certain inclination angle, when the motor 129 is started to swing the screening plate 121 left and right, the gravity can be effectively utilized to promote the material flow, so that the waste plastics on the surface of the screening plate 121 smoothly fall into the shell 220 from the baffle 131.

[0056] It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and the present application can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0057] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be properly combined to form other embodiments that those skilled in the art can understand.

Claims

1. A downer structure for waste plastic recycling and screening, characterized in that, The utility model relates to a screening box, which comprises: a screening box (100) with two discharge ports (111) on the side wall and a discharge port (112) on the bottom surface; four support legs (110) symmetrically fixed to the bottom surface of the screening box (100); two screening units (120) slidably connected to the inside of the screening box (100); two guide plates (130) fixed to the inside of the two discharge ports (111); a spiral conveying mechanism (200) arranged on one side of the screening box (100) with the discharge port (111).

2. The downer structure for waste plastic recycling and screening according to claim 1, characterized in that, The spiral conveying mechanism (200) comprises: a mounting rack (210); two fixed seats (211) fixed to the outer side wall of the mounting rack (210); two housings (220) fixed to the inner side wall of the mounting rack (210), each of which is rotatably connected to a rotating shaft (222) inside, and each of the rotating shafts (222) is fixedly connected to a spiral blade (223) on the outer wall, and each of the housings (220) is provided with a material receiving port (221) and a discharge port (224) on the outer wall near the two ends; two motors (225) fixedly connected to the top surface of the two fixed seats (211), and the motor shafts of the two motors (225) are in transmission connection with one end of the two rotating shafts (222) through the mounting rack (210); a support frame (230) fixedly connected to the outer wall of the lower housing (220) and the inner bottom surface of the mounting rack (210) at both ends; a support frame (231) fixedly connected to the outer wall of the two housings (220) at both ends.

3. The downer structure for recycling and screening waste plastics according to claim 1, characterized in that, Two sliding grooves (113) are arranged on the two opposite inner side walls of the screening box (100).

4. The downer structure for screening and recycling waste plastics according to claim 1, wherein, The screening unit (120) comprises: a screening plate (121) with a notch on the end side near the discharge port (111), and the position of the screening plate (121) with the notch is fixedly connected to a blocking unit (140); four sliding blocks (122) fixedly connected to the two opposite side walls of the screening plate (121), and the sliding blocks (122) on both sides of the screening unit (120) are slidably connected to the two sliding grooves (113); two fixed plates (123) fixedly connected to the two opposite outer side walls of the screening plate (121); a strip frame (124) arranged on one side of the screening plate (121); two connecting rods (125) fixedly connected to the two outer side walls of the strip frame (124) at one end, and fixedly connected to the side walls of the two sliding blocks (122) at the other end; a moving rod (126) slidably connected to the inner wall of the strip frame (124); a connecting block (127) fixedly connected to the end of the moving rod (126) on one side wall, and a transmission rod (128) fixedly connected to the other side wall away from the position of the moving rod (126). The motor (129) is fixedly connected to the outer wall of the screening box (100), and the motor shaft penetrates the side wall of the screening box (100) and is in transmission connection with the transmission rod (128).

5. The downer structure for screening and recycling waste plastics according to claim 4, characterized in that, The screen holes of the upper screening plate (121) are larger than those of the lower screening plate (121).

6. The downer structure for screening and recycling waste plastics according to claim 4, characterized in that, The blocking unit (140) comprises: The outer wall of the sealing plate (141) is in sliding connection with the inner wall of the screening plate (121) with a gap; The connecting frames (142) are two in number and are fixedly connected to the two top sides of the sealing plate (141); The electric telescopic rods (143) are two in number, the bottom ends of the two electric telescopic rods (143) are fixedly connected to the top surfaces of the two fixed plates (123), and the output ends of the two electric telescopic rods (143) are fixedly connected to the bottom surfaces of the two connecting frames (142).

7. The downer structure for recycling and screening waste plastics according to claim 1, wherein, The two material guide plates (130) are fixedly connected with the baffle (131) on the end sides close to the inside of the screening box (100).

Images