Waste plastic feeding device

Abstract

The utility model provides a waste plastic feeding device which comprises a compaction structure, a sealing valve and a conveying structure which are sequentially connected, the compaction structure comprises a first hopper which is vertically arranged, a compaction screw is vertically arranged in the first hopper, the compaction screw is connected with a compaction driving shaft, and the compaction driving shaft drives the compaction screw to rotate; the conveying structure comprises a horizontally arranged conveying shell, a conveying screw is horizontally arranged in the conveying shell, the conveying screw is connected with a conveying driving shaft, and the conveying driving shaft drives the conveying screw to rotate; film-shaped waste plastics are put into the first hopper, the compaction drive shaft drives the compaction screw to rotate so as to compact the film-shaped waste plastics to the joint of the first hopper and the sealing valve, when the sealing valve is opened, the compacted film-shaped waste plastics enter the conveying structure, and the conveying drive shaft drives the conveying screw to rotate so as to convey the film-shaped waste plastics. By adopting the feeding device, the uniformity, continuity and stability of feeding are improved, and the conveying efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to plastic cracking technical field, especially relate to a waste plastic feeding device. BACKGROUND

[0002] Membrane-shaped waste plastics, such as plastic film, packaging bag, etc., due to its light, soft, bulk density and other characteristics, face many challenges in recycling and cracking process. These plastic materials are prone to form large voids when stacking, resulting in large bulk density, and thus affecting the processing efficiency of the feeding device and the uniformity of the cracking reaction. In addition, the membrane-shaped waste plastics are prone to winding and stacking during feeding, causing uneven feeding and plugging problems, which seriously affect the stability of the cracking process and product quality.

[0003] The traditional plastic cracking device feeding system mostly adopts horizontal screw conveying mode, but there are significant defects when processing membrane-shaped waste plastics. Due to the light and soft characteristics of membrane-shaped plastics, material winding and stacking easily occur during horizontal screw propulsion, resulting in uneven distribution of material layer in the screw groove, affecting heat transfer efficiency, and causing incomplete cracking reaction and product quality fluctuation. More seriously, such materials frequently wind around the screw shaft during conveying, forming mechanical plugging, which not only needs frequent shutdown for cleaning, but also destroys the production continuity and greatly reduces the equipment running stability.

[0004] In addition, the traditional horizontal feeding mode has structural bottlenecks, and the matching degree of its screw propulsion rate and material characteristics is low, making it difficult to achieve fast and uniform conveying of membrane-shaped plastics. The limited feeding speed directly leads to low processing capacity per unit time, which cannot meet the demand of modern continuous cracking process for large-scale processing capacity. This inefficient feeding mode not only restricts the overall production capacity of the production line, but also increases the unit energy consumption cost, becoming a key technical bottleneck restricting the large-scale development of waste plastic resource industry.

[0005] Therefore, it is necessary to provide a waste plastic feeding device to improve the uniformity, continuity and stability of feeding, and improve the conveying efficiency. UTILITY MODEL CONTENTS

[0006] The utility model provides a waste plastic feeding device to improve the uniformity, continuity and stability of feeding, and improve the conveying efficiency.

[0007] To achieve the above purpose, the utility model provides the following technical scheme.

[0008] The utility model provides a kind of waste plastics feed device, including the compacting structure, sealing valve and conveying structure connected in turn, the compacting structure includes vertically arranged first hopper, compacting screw is vertically arranged in the first hopper, compacting screw is connected with compacting drive shaft, and compacting drive shaft rotates compacting screw;The conveying structure includes horizontally arranged conveying shell, conveying screw is horizontally arranged in the conveying shell, conveying screw is connected with conveying drive shaft, and conveying drive shaft rotates conveying screw;Membrane-like waste plastics is put into the first hopper, and the compacting screw is rotated by compacting drive shaft to compact membrane-like waste plastics to the junction of the first hopper and the sealing valve, and when the sealing valve opens, compacted membrane-like waste plastics enters the conveying structure, and is transported by the rotation of the conveying screw driven by the conveying drive shaft.

[0009] Preferably, the sealing valve is a gate valve, the sealing valve includes a valve housing, a valve shaft and valve plates, the valve housing is a cylindrical structure with both ends closed and arranged horizontally as a whole, the inlet of the sealing valve is arranged at the top, and the outlet of the sealing valve is arranged at the bottom, the valve shaft is coaxially arranged at the center of the valve housing, and the valve plates are arranged circumferentially at intervals on the outer periphery of the valve shaft, and the valve plates are arranged radially along the valve housing to divide the space in the valve housing.

[0010] Preferably, the valve shaft is connected with a valve motor, and the valve motor drives the valve shaft to rotate the valve plates.

[0011] Preferably, the first hopper has an inverted right-angled trapezoidal structure in vertical cross-section, and the first hopper has a device inlet arranged at one side of the top of the first hopper.

[0012] Preferably, one side of the end of the conveying screw in the conveying shell is provided with a second hopper in communication with the conveying shell, and the sealing valve is connected to the conveying structure through the second hopper.

[0013] Preferably, the conveying shell is provided with a device outlet away from the end of the conveying drive shaft.

[0014] Preferably, the compacting drive shaft is connected with a compacting motor.

[0015] Preferably, the conveying drive shaft is connected with a conveying motor.

[0016] Compared with the prior art, the technical scheme of the utility model embodiment has beneficial effects.

[0017] The waste plastic feeding device provided by this utility model includes a compaction structure, a sealing valve, and a conveying structure connected in sequence. The compaction structure includes a vertically arranged first hopper, in which a compaction screw is vertically arranged. The compaction screw is connected to a compaction drive shaft, which drives the compaction screw to rotate. The conveying structure includes a horizontally arranged conveying shell, in which a conveying screw is horizontally arranged. The conveying screw is connected to a conveying drive shaft, which drives the conveying screw to rotate. Film-like waste plastic is fed into the first hopper, and the compaction screw, driven by the compaction drive shaft, compacts the film-like waste plastic to the connection between the first hopper and the sealing valve. When the sealing valve is opened, the compacted film-like waste plastic enters the conveying structure and is conveyed by the conveying screw driven by the conveying drive shaft. The compaction feeding through the vertically arranged compaction screw effectively solves the problems of uneven feeding, easy clogging, and small processing capacity in traditional feeding devices when processing film-like waste plastic. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the waste plastic feeding device in an embodiment of this utility model;

[0019] Figure 2 This is a schematic diagram of the compaction structure in an embodiment of this utility model;

[0020] Figure 3 This is a schematic diagram of the sealing valve structure in an embodiment of this utility model;

[0021] Figure 4 This is a schematic diagram of the conveying structure in an embodiment of this utility model.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1-Compacting structure; 11-First hopper; 111-Phase inlet; 12-Compacting screw; 13-Compacting drive shaft;

[0024] 2-Sealed valve; 21-Valve body; 22-Valve shaft; 23-Valve plate;

[0025] 3-Conveying structure; 31-Conveying shell; 311-Discharge port of the device; 32-Conveying screw; 33-Conveying drive shaft; 34-Second hopper. Detailed Implementation

[0026] In order to make the purpose, characteristics and beneficial effects of the utility model more obvious and easy to understand, the specific embodiments of the utility model will be described in detail below in combination with the drawings. It can be understood that the specific embodiments described below are only used to explain the utility model, and are not a limitation on the utility model. In addition, the same or similar reference numerals in the drawings can refer to the same or similar elements in different embodiments, and the description of the same or similar elements in different embodiments and the description of prior art elements, characteristics, effects, etc. can be omitted.

[0027] Referring to Figure 1 The utility model embodiment provides a kind of waste plastics feeding device.

[0028] Specifically, the waste plastics feeding device comprises a compaction structure 1, a sealing valve 2 and a conveying structure 3 connected in sequence, the compaction structure 1 comprises a first hopper 11 arranged vertically, a compaction screw 12 is arranged vertically in the first hopper 11, the compaction screw 12 is connected with a compaction drive shaft 13, and the compaction drive shaft 13 drives the compaction screw 12 to rotate;The conveying structure 3 comprises a conveying shell 31 arranged horizontally, a conveying screw 32 is arranged horizontally in the conveying shell 31, the conveying screw 32 is connected with a conveying drive shaft 33, and the conveying drive shaft 33 drives the conveying screw 32 to rotate;Membrane-shaped waste plastics is put into the first hopper 11, the compaction screw 12 is driven by the compaction drive shaft 13 to rotate to compact the membrane-shaped waste plastics to the connecting place of the first hopper 11 and the sealing valve 2, and when the sealing valve 2 is opened, the compacted membrane-shaped waste plastics enters the conveying structure 3, and is conveyed by the conveying drive shaft 33 driving the conveying screw 32 to rotate;The compaction screw 12 compacts the membrane-shaped waste plastics, ensuring the uniformity and stability of feeding;The sealing valve 2 is arranged between the compaction structure 1 and the conveying structure 3, the feeding amount and feeding speed are controlled, gas leakage is prevented, and the stability and safety of the cracking process are ensured.

[0029] Specifically, the vertically arranged compaction screw 12 has a downward thrust on the material, and cooperates with the sealing valve 2, so that the volume of the first hopper 11 can be considered constant when the sealing valve 2 is closed, and as the feeding amount increases, the compaction screw 12 continuously operates to compact the material.

[0030] In some embodiments, the sealing valve 2 is a gate valve, which comprises a valve housing 21, a valve shaft 22 and valve plates 23. The valve housing 21 is in the form of a cylinder with closed ends arranged horizontally as a whole, the feeding port of the sealing valve 2 is arranged at the top, the discharging port of the sealing valve 2 is arranged at the bottom, the valve shaft 22 is coaxially arranged at the center of the valve housing 21, and the valve plates 23 are a plurality of valve plates 23 arranged circumferentially at intervals on the outer periphery of the valve shaft 23. The valve plates 23 are arranged radially along the valve housing 21 to divide the space in the valve housing 21.

[0031] In some embodiments, the valve shaft 22 is connected with a valve motor (not shown), the valve motor drives the valve shaft 22 to drive the valve plate 23 to rotate; the valve plate 23 and the inner wall of the valve housing 21 form a sealed cavity, the volume of each sealed cavity is fixed, the rotation speed of the valve shaft 22 determines the number of cavities passing per unit time, by adjusting the rotation speed of the valve motor, the material flow can be directly controlled.

[0032] In some embodiments, the first hopper 11 is in an inverted right-angled trapezoidal structure in vertical section, and the first hopper 11 has a device feeding port 111 located at one side of the top of the first hopper 11.

[0033] In some embodiments, one side of the end of the conveying housing 31 where the conveying screw 32 is installed is provided with a second hopper 34 in communication with the conveying housing 31, and the sealing valve 2 is connected to the conveying structure 3 through the second hopper 34.

[0034] In some embodiments, the device discharging port 311 is arranged at the end of the conveying housing 31 away from the conveying drive shaft 33.

[0035] In some embodiments, the compaction drive shaft 13 is connected with a compaction motor (not shown), the compaction motor drives the compaction drive shaft 13 to rotate, thereby driving the compaction screw 12 to rotate.

[0036] In some embodiments, the conveying drive shaft 33 is connected with a conveying motor (not shown), the conveying motor drives the conveying drive shaft 33 to rotate, thereby driving the conveying screw 32 to rotate.

[0037] In summary, the waste plastic feeding device of the embodiments of the present application comprises a compaction structure 1, a sealing valve 2 and a conveying structure 3 connected in sequence, the compaction structure 1 comprises a first hopper 11 arranged vertically, the first hopper 11 is vertically provided with a compaction screw 12, the compaction screw 12 is connected with a compaction drive shaft 13, the compaction drive shaft 13 drives the compaction screw 12 to rotate; the conveying structure 3 comprises a conveying housing 31 arranged horizontally, the conveying housing 31 is horizontally provided with a conveying screw 32, the conveying screw 32 is connected with a conveying drive shaft 33, the conveying drive shaft 33 drives the conveying screw 32 to rotate; the film-shaped waste plastic is put into the first hopper 11, the compaction drive shaft 13 drives the compaction screw 12 to rotate to compact the film-shaped waste plastic to the connection between the first hopper 11 and the sealing valve 2, when the sealing valve 2 is opened, the compacted film-shaped waste plastic enters the conveying structure 3, and the conveying drive shaft 33 drives the conveying screw 32 to rotate for conveying; the film-shaped waste plastic is compacted by the compaction screw 12, thereby ensuring the uniformity and stability of the feeding; the sealing valve 2 is arranged between the compaction structure 1 and the conveying structure 3, thereby controlling the feeding amount and feeding speed, preventing gas leakage, and ensuring the stability and safety of the cracking process.

[0038] Although specific embodiments have been described above, these embodiments are not intended to limit the scope of the present disclosure, even if only a single embodiment is described with respect to a particular feature. The examples of features provided in the present disclosure are intended to be illustrative rather than limiting, unless otherwise specified. In a specific implementation, one or more technical features of a dependent claim can be combined with technical features of an independent claim, and technical features from corresponding independent claims can be combined by any appropriate means, not only by the specific combinations listed in the claims, if technically feasible, according to actual needs.

Claims

1. A waste plastic feed device, characterized by, The device comprises a compaction structure, a sealing valve and a conveying structure connected in sequence, the compaction structure comprises a first hopper arranged vertically, a compaction screw is arranged vertically in the first hopper, the compaction screw is connected with a compaction driving shaft, the compaction driving shaft drives the compaction screw to rotate; the conveying structure comprises a conveying housing arranged horizontally, a conveying screw is arranged horizontally in the conveying housing, the conveying screw is connected with a conveying driving shaft, the conveying driving shaft drives the conveying screw to rotate; the film-shaped waste plastic is put into the first hopper, the compaction screw is driven by the compaction driving shaft to rotate to compact the film-shaped waste plastic to the connection between the first hopper and the sealing valve, when the sealing valve is opened, the compacted film-shaped waste plastic enters the conveying structure and is conveyed by the conveying screw driven by the conveying driving shaft to rotate.

2. The waste plastic feed arrangement of claim 1, wherein, The sealing valve is a gate valve, the sealing valve comprises a valve housing, a valve shaft and valve plates, the valve housing is in a barrel structure arranged horizontally and closed at both ends as a whole, the feeding port of the sealing valve is arranged at the top, the discharging port of the sealing valve is arranged at the bottom, the valve shaft is coaxially arranged at the center of the valve housing, the valve plates are a plurality of valve plates arranged in a circle along the outer periphery of the valve shaft, and the valve plates are arranged radially along the valve housing to separate the space in the valve housing.

3. The waste plastic feed arrangement of claim 2, wherein, The valve shaft is connected with a valve motor, the valve motor drives the valve shaft to rotate the valve plates.

4. The waste plastic feed arrangement of claim 1, wherein, The vertical section of the first hopper is in an inverted right-angled trapezoidal structure, the first hopper has a device feeding port, and the device feeding port is located on one side of the top of the first hopper.

5. The waste plastic feed arrangement of claim 1, wherein, One side of the end of the conveying housing where the conveying screw is arranged is provided with a second hopper in communication with the conveying housing, and the sealing valve is connected to the conveying structure through the second hopper.

6. The waste plastic feed arrangement of claim 1, wherein, The conveying housing is provided with a device discharging port away from the end of the conveying driving shaft.

7. The waste plastic feed arrangement of claim 1, wherein, The compaction driving shaft is connected with a compaction motor.

8. The waste plastic feed arrangement of claim 1, wherein, The conveying driving shaft is connected with a conveying motor.

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