Transition stock bin in waste plastic recovery production line

Abstract

The utility model discloses a transition stock bin in a waste plastic recovery production line, which comprises a stock bin body with a temporary storage cavity, and the top of the stock bin body is open to form a material inlet; a material discharging port is formed in the left side wall or the right side wall of the front portion of the stock bin body, a conveying screw is arranged at the position, located at the material discharging port, in the temporary storage cavity, and the conveying screw is driven by a first driving device to rotate. A bottom material pushing device for pushing materials at the bottom of the temporary storage cavity to the conveying screw rod from back to front is arranged at the bottom of the temporary storage cavity; and a front material shifting device for pushing the materials at the front part of the temporary storage cavity to the conveying screw rod from top to bottom is arranged above the conveying screw rod in the temporary storage cavity. The structure has the advantages of small bearing, low energy consumption, stable and reliable operation and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to waste plastics recycling technical field especially relates to a transition bin in waste plastics recycling production line. BACKGROUND

[0002] Plastic is a kind of universally and widely used material, and the recycling of waste plastics helps to reduce energy and fossil fuel consumption, reduce carbon dioxide and other greenhouse gas emissions and air pollution caused by burning, reduce water pollution and soil pollution caused by landfill, and promote the development of circular economy.

[0003] The recycling of waste plastics is a complex but orderly process. First, waste plastics are collected through recycling channels, then inspected and rejected. After that, the recyclable waste plastics are classified according to material type and grade. Finally, the waste plastics will go through a series of preparation work such as crushing, washing and dewatering, and then be compressed into granular recycled plastics in a granulator. After mixing with necessary additives and pigments in a mixer, the recycled plastics are formed into recycled plastic products of desired shape and specification through extrusion, stretching and other processes. Recycled plastic products can be widely used in many fields such as sidewalk board, carpet, wall protection board, roof insulation material, plastic packaging, toy, electrical appliance shell, etc.

[0004] In the waste plastics recycling production line, different stations such as crushing station, cleaning station and dewatering station are divided. The front and rear stations are usually connected by a conveyor, and sometimes a transition bin is added for temporary storage of materials. The transition bin currently used includes a bin body with a temporary storage cavity. The top of the bin body is open to form a material inlet for feeding materials into the temporary storage cavity. A material outlet is formed on the side wall of the bin body. A belt conveyor device is arranged at the bottom of the temporary storage cavity to convey the materials in the temporary storage cavity to the material outlet. Since the materials in the temporary storage cavity are all stacked on the belt of the belt conveyor device, the load on the belt is large, which will inevitably increase the load of the motor driving the belt and increase the energy consumption. In addition, the load on the belt is large, so the belt needs to be reinforced and supported to ensure its normal operation. UTILITY MODEL CONTENTS

[0005] The utility model needs to solve the technical problem: provide a kind of transition bin in waste plastics recycling production line, and the driving load is small, and it is stable and reliable to run.

[0006] The bottom material pushing device, the front material pushing device and the conveying screw are combined, the driving load is small, energy consumption is saved, the material pushed to the conveying screw can smoothly pass through the conveying screw and be outputted outward, the material in the front of the temporary storage cavity is prevented from arching upward, and the material conveying operation is stable and reliable.

[0007] The transition bin in the waste plastic recycling production line is mainly used for plastic crushed materials, such as crushed film, crushed plastic beverage bottles, crushed household appliance plastic shells and the like, and is uniformly referred to as material for convenience of description.

[0008] The technical scheme of the utility model adopts: a kind of transition bin in waste plastic recycling production line, it include: the bin body of cuboid shape, the bin body has temporary storage cavity, the bin body top is opened and forms the material inlet for material input temporary storage cavity;Material outlet is arranged in communication with temporary storage cavity on the left side wall or right side wall of the front of bin body, conveying screw is arranged in temporary storage cavity at material outlet, the conveying screw is supported on the bottom of temporary storage cavity by first bearing group in left and right horizontal direction, at this time, the output end of conveying screw is located at material outlet.The conveying screw is driven to rotate by first driving device, so that the material located at conveying screw is conveyed to the direction of material outlet.

[0009] Bottom material pushing device for pushing material located at the bottom of temporary storage cavity from back to front to conveying screw is arranged in the bottom of temporary storage cavity;Front material pushing device for pushing material located at the front of temporary storage cavity from top to bottom to conveying screw is arranged in temporary storage cavity above conveying screw.The material in temporary storage cavity is smoothly and uniformly pushed to conveying screw by the structure combination of bottom material pushing device and front material pushing device.

[0010] Among them, the specific support mode that the conveying screw is supported on the bottom of temporary storage cavity by first bearing group in left and right horizontal direction is that side wall through hole is formed on the side wall of bin body on the opposite side of material outlet, and the first bearing group is arranged in side wall through hole.

[0011] Among them, the first driving device is first speed reducer motor arranged on the outer side wall of bin body, and the motor shaft of first speed reducer motor is fixedly connected with the end part of conveying screw extending out of first bearing group.

[0012] Further, the aforementioned transition bin in the waste plastic recycling production line, wherein the structure of the bottom material pushing device comprises: a plurality of pushing rods arranged in sequence and spaced apart from left to right, the number of pushing rods being determined according to the actual size of the transition bin, each pushing rod being arranged in front-rear direction on the bottom surface of the temporary storage cavity through a corresponding horizontal sliding mechanism, and each pushing rod being driven to move forward or backward by a corresponding second driving device.

[0013] A plurality of claw mechanisms are arranged in sequence and spaced apart from back to front on each pushing rod, the structure of the claw mechanism comprising: a claw seat fixedly arranged on the pushing rod, a left claw and a right claw being hinged to the claw seat, the left claw being located on the left side of the corresponding pushing rod, the right claw being located on the right side of the corresponding pushing rod, and the left claw and the right claw being able to open outward or fold inward under the action of external force.

[0014] Further, the aforementioned transition bin in the waste plastic recycling production line, wherein the claw seat has an inclined top surface that gradually inclines downward from front to back, the existence of the inclined top surface making the rear part of the claw seat have a conical structure, which can shovel the material on the bottom surface of the temporary storage cavity during the backward movement of the claw seat, preventing some material from being hardened and accumulated on the bottom surface of the temporary storage cavity by being squeezed by the claw seat.

[0015] Further, the aforementioned transition bin in the waste plastic recycling production line, wherein the inclination angle of the inclined top surface is 15°-30°. More preferably, the inclination angle of the inclined top surface is 20°.

[0016] Further, the aforementioned transition bin in the waste plastic recycling production line, wherein the structure of the horizontal sliding mechanism is that a slide rail is arranged on the bottom surface of the temporary storage cavity, a slide block cooperating with the slide rail is arranged at the bottom of the corresponding pushing rod, and the corresponding pushing rod is installed on the slide rail through the slide block.

[0017] The structure of the second driving device is that an oil cylinder is arranged on the bin body, and the piston rod of the oil cylinder is connected with the rear end of the corresponding pushing rod.

[0018] Further, the aforementioned transition bin in the waste plastic recycling production line, wherein the structure of the front material pushing device comprises: a plurality of roller shafts arranged in sequence and spaced apart from top to bottom, the number of roller shafts being determined according to the actual size of the transition bin, each roller shaft being supported in left-right horizontal direction in the temporary storage cavity through a corresponding second bearing group, a plurality of push plates being arranged on each roller shaft, and each roller shaft being driven to rotate by a corresponding third driving device.

[0019] Further, the transition silo in the waste plastic recycling production line, wherein the third driving device is a second speed reducer motor arranged on the outer sidewall of the silo body, and the motor shaft of the second speed reducer motor is connected with the corresponding roller shaft end.

[0020] Further, the transition silo in the waste plastic recycling production line, wherein the structure of the push plate comprises: a connecting plate, the lower section of the connecting plate is fixedly connected with the roller shaft, the upper section of the connecting plate is bent at an angle, and the upper end edge profile of the connecting plate is composed of a circular arc profile recessed inward from the middle and V-shaped profiles recessed inward distributed on the left and right sides of the circular arc profile; a push claw is fixedly installed on the connecting plate at each V-shaped profile, and the upper end edge profile of the push claw is two triangular profiles protruding outward.

[0021] The beneficial effects of the utility model are: 1. the push rod with the push claw mechanism is small in size as a whole, so that the material load in the temporary storage cavity is not concentrated on each push rod, but mainly borne by the bottom surface of the temporary storage cavity, so that the load of the oil cylinder is smaller, energy consumption is saved, and the service life of the oil cylinder is prolonged; 2. the material at the bottom material pushing device is pushed from back to front to the conveying screw rod by the push claw mechanism on each push rod, and combined with the front material pushing device, the material pushed to the conveying screw rod can smoothly pass through the conveying screw rod and be output outward, and the front material of the temporary storage cavity is prevented from arching upward, so that the material conveying operation is stable and reliable; 3. in the process of being pulled back, the material on the bottom surface of the temporary storage cavity is scooped up by the inclined top surface on the push claw seat, so that the material is prevented from being extruded and hardened into a cake shape and adhered to the bottom surface of the temporary storage cavity, and the normal operation of the bottom material pushing device is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a structural schematic diagram of the transition silo in the waste plastic recycling production line.

[0023] Figure 2 is Figure 1 is a structural schematic diagram of the transition silo.

[0024] Figure 3 is Figure 2 is a structural schematic diagram of the transition silo.

[0025] Figure 4 is Figure 3 is a structural schematic diagram of the transition silo.

[0026] Figure 5 is Figure 2 is a structural schematic diagram of the transition silo.

[0027] Figure 6 is Figure 5Part B of the local enlarged structure diagram.

[0028] Figure 7 Is any structure diagram of the pusher mechanism.

[0029] Figure 8 Is Figure 7 Structure diagram of the upward direction.

[0030] Wherein:

[0031] 1, the silo body; 11, the material inlet; 12, the material outlet; 13, the temporary storage cavity bottom surface; 2, the conveying screw; 3, the push rod; 4, the slide rail; 5, the oil cylinder; 6, the pusher mechanism; 61, the pusher seat; 611, the inclined top surface; 62, the left pusher; 63, the right pusher; 7, the roller shaft; 71, the second speed reducer motor; 8, the pawl; 81, the triangular profile; 9, the push plate; 91, the lower section of the connecting plate; 92, the upper section of the connecting plate; 93, the circular arc profile; 94, the V-shaped profile; 10, the bottom support. DETAILED DESCRIPTION

[0032] The technical solutions of the utility model will be described in further detail below in combination with the drawings and preferred embodiments.

[0033] In the following, the example embodiments will be described more fully with reference to the accompanying drawings, in which, however, the example embodiments can be embodied in different forms and should not be construed as limited to the embodiments set forth herein; rather, the aim of the embodiments is to enable the disclosure to be thorough and complete, and to fully convey the scope of the disclosure to those skilled in the art.

[0034] For the convenience of description, the utility model defines "front", "back", "left", "right", "up", "down" with the coordinate system shown in the figure, and all the orientation words related to "front", "back", "left", "right", "up", "down" in the utility model are defined according to this direction. Figure 1

[0035] In the description of the utility model, it should be explained that the orientation or position relationship indicated by the terms "up", "down", "front", "back", "left", "right" and the like is the orientation or position relationship based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0036] As Figure 1 and Figure 2 ​As shown, the transition bin in the waste plastic recycling production line in the embodiment comprises a bin body 1 having a temporary storage cavity. The bin body 1 is a cuboid box, and the inner cavity of the box is the temporary storage cavity. Considering the different heights of different connecting devices, a bottom support 10 with a corresponding height can be arranged at the bottom of the bin body 1. The top of the bin body 1 is open, and the top opening is a material feeding port 11. The material is fed into the temporary storage cavity through the material feeding port 11. A material discharging port 12 communicating with the temporary storage cavity is arranged on the front left side wall or the front right side wall of the bin body 1. A conveying screw 2 is arranged at the material discharging port 12 in the temporary storage cavity. The conveying screw 2 is supported by a first bearing set in the left and right horizontal directions at the bottom of the temporary storage cavity, and the conveying screw 2 is driven to rotate by a first driving device, so as to convey the material at the conveying screw 2 to the material discharging port 12.

[0037] In the embodiment, the conveying screw 2 is supported by the first bearing set in the following manner: a side wall through hole is formed in the side wall of the bin body 1 opposite to the material discharging port 2, and the first bearing set is arranged in the side wall through hole. The first driving device is a first speed reducer motor arranged on the outer side wall of the bin body 1. The motor shaft of the first speed reducer motor is fixedly connected with the end portion of the conveying screw 2 extending out of the first bearing set.

[0038] In the embodiment, a bottom material pushing device is arranged at the bottom of the temporary storage cavity to push the material at the bottom of the temporary storage cavity from back to front to the bottom of the conveying screw.

[0039] As shown in Figure 1 and Figure 2 , the structure of the bottom material pushing device comprises a plurality of push rods 3 arranged in sequence and spaced apart from left to right. Each push rod 3 is arranged on the bottom surface 13 of the temporary storage cavity in the front and back directions by a corresponding horizontal sliding mechanism. The horizontal sliding mechanism comprises a slide rail 4 arranged on the bottom surface 13 of the temporary storage cavity and a slide block arranged at the bottom of the corresponding push rod 3 and matched with the slide rail 4. The slide block can be a long strip-shaped slide block structure or a plurality of small slide blocks arranged at the bottom of the corresponding push rod 3. This is a conventional technology, and thus will not be described in detail here. The corresponding push rod 3 is installed on the slide rail 4 by the slide block.

[0040] Each push rod 3 is driven by a corresponding second driving device to move forward or backward along the slide rail 4. The structure of the second driving device comprises an oil cylinder 5 arranged on the bin body 1. The piston rod of the oil cylinder 5 is connected with the rear end of the corresponding push rod 3.

[0041] As shown in Figure 2 , Figure 5 , Figure 6 and Figure 7As shown, a plurality of pusher claw mechanisms 6 are arranged on each pusher rod 3 in sequence from back to front, and the structure of the pusher claw mechanism 6 comprises: a pusher claw base 61 fixedly arranged on the pusher rod 3, a left pusher claw 62 and a right pusher claw 63 hingedly arranged on the pusher claw base 61, the left pusher claw 62 is located on the left side of the corresponding pusher rod 3, the right pusher claw 63 is located on the right side of the corresponding pusher rod 3, and the left pusher claw 62 and the right pusher claw 63 can be opened outward or closed inward under the action of external force.

[0042] In the process of moving the corresponding pusher rod 3 forward by the oil cylinder 6, since the material is accumulated in the temporary storage cavity, under the action of the forward pushing force of the pusher rod 3 and the backward pushing force of the material on the left pusher claw 62 and the right pusher claw 63, the left pusher claw 62 and the right pusher claw 63 of each pusher claw mechanism 6 are opened outward, as shown by the arrow direction, that is, the direction in which the left pusher claw 62 and the right pusher claw 63 are opened outward, Figure 7 and the state shown is that the left pusher claw 62 and the right pusher claw 63 are in the closed state. The opened left pusher claw 62 and the right pusher claw 63 can push the material in front of them forward under the action of the forward pushing force of the pusher rod 3, at this time, as the material is pushed forward, a spare space is emptied, which is filled with the material above the spare space. Figure 7

[0043] In the process of moving the corresponding pusher rod 3 backward by the oil cylinder 5, since the material is accumulated in the temporary storage cavity, under the action of the backward pushing force of the pusher rod 3 and the forward pushing force of the material on the left pusher claw 62 and the right pusher claw 63, the left pusher claw 62 and the right pusher claw 63 of each pusher claw mechanism are closed inward, at this time, each pusher claw mechanism 6 only retreats back to the original position and does not play the role of pushing the material.

[0044] Since the pusher rod 3 with the pusher claw mechanism 6 is small in size, the load of the material in the temporary storage cavity is not concentrated on each pusher rod 3, but mainly borne by the bottom surface 11 of the temporary storage cavity, so the load of the oil cylinder 5 is small, which not only saves energy consumption, but also improves the service life of the oil cylinder.

[0045] ​Considering that part of the material on the bottom surface 11 of the temporary storage cavity will be clamped between the push claw base 61 and the bottom surface 11 of the temporary storage cavity during the process of the push claw mechanism 6 retreating back to the original position, since the push claw base 61 is repeatedly reciprocated, the part of the material clamped between the push claw base 61 and the bottom surface 11 of the temporary storage cavity is easily extruded and hardened by the push claw base 61 to adhere to the bottom surface 11 of the temporary storage cavity in the form of a cake, eventually causing the bottom material pushing device to be stuck. In order to avoid this phenomenon, the top surface of the push claw base 61 in the embodiment is designed to have an inclined top surface 611 that gradually inclines downward from front to back, and the inclined top surface 611 forms a conical structure with the bottom surface of the push claw base. The conical structure can shovel the material on the bottom surface 11 of the temporary storage cavity during the process of the push claw base 61 moving backward, preventing the material from being clamped between the push claw base 61 and the bottom surface 11 of the temporary storage cavity.

[0046] As shown in the drawings, the inclination angle α of the inclined top surface 611 in the embodiment is 15°-30°. The optimal solution is that the inclination angle α of the inclined top surface 611 is 20°. Figure 8 A front material pushing device for pushing the material located at the front of the temporary storage cavity downward to the conveying screw 2 is arranged above the conveying screw 2 in the temporary storage cavity.

[0047] As shown in the drawings, the structure of the front material pushing device in the embodiment includes a plurality of roller shafts 7 arranged at intervals from top to bottom, each roller shaft 7 is supported in the temporary storage cavity by a corresponding second bearing group in the left-right horizontal direction, a plurality of pushing plates 9 are arranged on each roller shaft 7, and each roller shaft 7 is driven to rotate by a corresponding third driving device. The third driving device is a second speed reducer motor 71 arranged on the outer wall of the bin body 1, and the motor shaft of the second speed reducer motor 71 is connected with the end of the corresponding roller shaft 7.

[0048] Figure 2 As shown in the drawings, the structure of the pushing plate 9 in the embodiment includes a connecting plate, the lower section 91 of the connecting plate is fixedly connected to the roller shaft 7, the upper section 92 of the connecting plate is bent at an angle, and the upper end edge profile of the connecting plate is composed of a circular arc profile 93 recessed inward from the middle and V-shaped profiles 94 recessed inward on both sides of the circular arc profile 93. A pushing claw 8 is fixedly installed on the connecting plate at each V-shaped profile 94, and the upper end edge profile of the pushing claw 8 is two triangular profiles 81 protruding outward. Figure 3

[0049] As shown in the drawings, the structure of the pushing plate 9 in the embodiment includes a connecting plate, the lower section 91 of the connecting plate is fixedly connected to the roller shaft 7, the upper section 92 of the connecting plate is bent at an angle, and the upper end edge profile of the connecting plate is composed of a circular arc profile 93 recessed inward from the middle and V-shaped profiles 94 recessed inward on both sides of the circular arc profile 93. A pushing claw 8 is fixedly installed on the connecting plate at each V-shaped profile 94, and the upper end edge profile of the pushing claw 8 is two triangular profiles 81 protruding outward. Figure 4

[0050] ​​​The material at the bottom material pushing device is pushed to the conveying screw 2 from back to front by the pushing claw mechanism 6 on each pushing rod 3, and combined with the front material pushing device, the material pushed to the conveying screw 2 can smoothly pass through the conveying screw 2 to be outputted, and the material in the front temporary storage cavity is prevented from arching upward, so that the material conveying operation is stable and reliable.

[0051] The above merely describes the preferred embodiments of the present application, and is not intended to limit the present application in any other form, and any modification or equivalent change made according to the technical essence of the present application still falls within the scope of the present application.

Claims

1. A transition bin in a waste plastic recycling production line, comprising: The application relates to a cuboid-shaped stock bin body with a temporary storage cavity, and the top of the stock bin body is open to form a material feeding port for feeding materials into the temporary storage cavity; characterized in that a material discharging port is arranged on the left or right front side wall of the stock bin body and communicates with the temporary storage cavity, a conveying screw is arranged in the temporary storage cavity at the material discharging port, the conveying screw is supported on the bottom of the temporary storage cavity in the left-right horizontal direction through a first bearing group, and the conveying screw is driven to rotate by a first driving device. A bottom material pushing device is arranged on the bottom of the temporary storage cavity to push the materials on the bottom of the temporary storage cavity to the bottom of the conveying screw from back to front; and a front material pushing device is arranged above the conveying screw in the temporary storage cavity to push the materials in the front of the temporary storage cavity to the conveying screw from top to bottom.

2. The transition bin in a waste plastic recycling production line according to claim 1, characterized in that: A side wall through hole is formed in the side wall of the stock bin body on the side opposite to the material discharging port, the first bearing group is arranged in the side wall through hole, and the first driving device is a first speed reducer motor arranged on the outer side wall of the stock bin body, the motor shaft of the first speed reducer motor is fixedly connected with the end of the conveying screw extending out of the first bearing group.

3. The transition bin in a waste plastic recycling production line according to claim 1, characterized in that: The structure of the bottom material pushing device comprises a plurality of pushing rods arranged in sequence and spaced apart from each other from left to right, each pushing rod is arranged on the bottom surface of the temporary storage cavity in the front-back direction through a corresponding horizontal sliding mechanism, and each pushing rod is driven to move forward or backward by a corresponding second driving device. A plurality of pushing claw mechanisms are arranged in sequence and spaced apart from each other on each pushing rod from back to front, the structure of the pushing claw mechanism comprises a pushing claw seat fixedly arranged on the pushing rod, a left pushing claw and a right pushing claw are hingedly connected to the pushing claw seat, the left pushing claw is located on the left side of the corresponding pushing rod, the right pushing claw is located on the right side of the corresponding pushing rod, and the left pushing claw and the right pushing claw can be opened outward or folded inward under the action of external force.

4. The transition bin in a waste plastic recycling production line according to claim 3, characterized in that: The pushing claw seat has an inclined top surface gradually inclined downward from front to back.

5. The transition bin in a waste plastic recycling production line according to claim 4, characterized in that: The inclination angle of the inclined top surface is 15-30 degrees.

6. The transition bin in a waste plastic recycling production line according to claim 4, characterized in that: The inclination angle of the inclined top surface is 20 degrees.

7. The transition bin in a waste plastic recycling production line according to claim 3, characterized in that: The structure of the horizontal sliding mechanism is that a sliding rail is arranged on the bottom surface of the temporary storage cavity, a sliding block matched with the sliding rail is arranged at the bottom of the corresponding pushing rod, and the corresponding pushing rod is installed on the sliding rail through the sliding block. The structure of the second driving device is that an oil cylinder is arranged on the stock bin body, and the piston rod of the oil cylinder is connected with the rear end of the corresponding pushing rod.

8. The transition bin in a waste plastic recycling production line according to claim 1, characterized in that: The structure of the front material pushing device comprises a plurality of roller shafts arranged in sequence and spaced apart from each other from top to bottom, each roller shaft is supported in the left-right horizontal direction in the temporary storage cavity through a corresponding second bearing group, a plurality of pushing plates are arranged on each roller shaft, and each roller shaft is driven to rotate by a corresponding third driving device.

9. The transition bin in a waste plastic recycling production line according to claim 8, characterized in that: The third driving device is a second speed reducer motor arranged on the outer side wall of the stock bin body, and the motor shaft of the second speed reducer motor is connected with the end of the corresponding roller shaft.

10. The transition bin in a waste plastic recycling production line according to claim 8, characterized in that: The structure of the shifting plate comprises a connecting plate, the lower section of which is fixedly connected to the roller shaft, the upper section of which is bent at an angle, and the upper end edge profile of which is composed of a circular arc profile recessed inward from the middle and V-shaped profiles recessed inward distributed on both sides of the circular arc profile; a shifting claw is fixedly installed on the connecting plate at each V-shaped profile, and the upper end edge profile of the shifting claw is two triangular profiles protruding outward.

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