Pet plastic wet-type crushing device

Abstract

The utility model provides a pet plastic wet-type crushing device which comprises two stirring units with opposite discharge ports, a discharge chute is communicated between the discharge ports of the two stirring units, an opening cabin, a pressing cabin, a water return cabin and a crushing cabin are communicated up and down in the stirring units, a conveying pipe group is arranged at the bottom of the crushing cabin, and the conveying pipe group is communicated with the discharge chute. The conveying directions of the two conveying pipe groups on the two stirring units are opposite, and the two conveying pipe groups are communicated with the discharging groove; a conveying belt is arranged in the side direction of the discharging groove and is used for discharging slag; according to the device, the generation of crushed dust is isolated in a wet crushing manner, meanwhile, the noise pollution is reduced by utilizing dynamic supplement balance of a water body and staggered-phase stirring of the water body, and the energy-saving effect of the device is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of waste plastic product recycling and crushing instruments and equipment, specifically a wet crushing device for PET plastic. Background Technology

[0002] After PET plastic is recycled, it undergoes sorting, label removal, and crushing to break down the intact plastic bottles into flake-shaped plastic pieces. These flake-shaped PET plastic pieces are then fed into a granulation device for plastic granulation, thus completing a stage of waste plastic recycling. During the PET plastic crushing and decomposition process, the multiple cutting and collisions between the decomposition blades and the plastic parts generate a significant amount of crushing dust, which is discharged into the surrounding area, affecting the health of the operators. It also generates considerable industrial noise pollution. Some waste plastic recycling production lines use wet crushing to reduce dust generation, but the rotating and staggered effect of the crushing device drives the water flow to rotate, generating water flow noise, which cannot reduce the generation of industrial noise.

[0003] To achieve the above objectives, this utility model provides a wet crushing device for PET plastics, which can solve the problems mentioned in the background art. Utility Model Content

[0004] This utility model adopts the following technical solution:

[0005] A wet crushing device for PET plastic includes two mixing units with opposite discharge ports. A discharge chute is connected between the discharge ports of the two mixing units. The mixing units have an open chamber, a pressing chamber, a water return chamber, and a crushing chamber connected vertically inside. A conveying pipe assembly is provided at the bottom of the crushing chamber. The two conveying pipe assemblies on the two mixing units have opposite conveying directions and are both connected to the discharge chute. A conveyor belt is provided on the side of the discharge chute for discharging slag.

[0006] The bottom of the discharge trough is equipped with a return water pump and is connected to the interior of the return water chamber. The upper part of the return water chamber is connected to the pressing chamber.

[0007] Preferably, the open compartment is fixed above the compression compartment, and the compression compartment is provided with a compression assembly inside. The compression assembly includes a support compartment fixed inside the open compartment, and a plastic inlet is formed between the support compartment and the compression compartment. The compression movement stroke of the compression surface of the compression assembly includes the opening height of the plastic inlet. A return water port is provided above the side wall of the compression compartment and communicates with the return water compartment.

[0008] Preferably, the pressing assembly further includes multiple limiting posts fixed to the inner wall of the pressing chamber, each limiting post being connected to a guide rod, and the other end of the multiple guide rods being fixedly connected to a positioning plate. The positioning plate is fixed inside the supporting chamber, and a pressing cylinder is provided above the positioning plate. The output end of the pressing cylinder is connected downward to the pressing plate. The pressing plate has through holes on its periphery that are sleeved on the outside of the guide rods and mutually guide and cooperate with each other. The pressing plate has multiple water supply holes.

[0009] Preferably, there is a height gap between the top feed inlet height of the crushing chamber and the minimum pressing height of the pressing plate.

[0010] Preferably, the crushing chamber is provided with a stirring motor unit on its side, the output end of the stirring motor unit is located inside the crushing chamber and connected to a toothed roller crushing unit, and the inner diameter of the crushing chamber is in close contact with the rotation stroke of the toothed roller crushing unit.

[0011] Preferably, the conveying pipe assembly includes a bottom discharge guide trough disposed at the bottom of the crushing chamber and connected to the bottom of the chamber. The bottom discharge guide trough is provided with a spiral conveying roller and a conveying motor inside. The two spiral conveying rollers convey in opposite directions. The bottom of the bottom discharge guide trough is provided with a drainage perforated plate connected to the return water chamber.

[0012] Preferably, the return water chamber includes a bottom return water layer disposed outside the crushing chamber and a supplementary return water layer disposed around the periphery of the pressing chamber. The top of the supplementary return water layer is provided with a liquid level detection device and an external water supply port is laterally connected to the water level detection height. The bottom return water layer is laterally connected to the outlet end of the return water pump.

[0013] Preferably, the two sides of the discharge trough are connected to the discharge port of the mixer unit, and the bottom of the discharge trough is provided with a sinking chamber, the bottom of which is connected to the inlet of the return water pump.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] This invention connects the open chamber, compression chamber, return water chamber, and crushing chamber from top to bottom, forming a complete circulating water chamber using a return water pump. The compression chamber's vertical movement pushes the material to simultaneously compress the water flow, while the crushing chamber's lateral turbulence further reduces the water flow compared to drum-type wet crushing, thus minimizing noise. Furthermore, covering the entire chamber with water reduces noise pollution from the crushing chamber during PET material crushing and isolates dust pollution from PET crushing. This device utilizes the compression assembly and conveying pipe assembly in conjunction with the crushing chamber's crushing action to immediately transport the crushed PET material, preventing it from floating and failing to drain during wet crushing. Simultaneously, this device allows for the reuse of wastewater from wet processing, effectively saving energy. Attached Figure Description

[0016] Figure 1 This is a side view of the internal structure of this utility model.

[0017] In the diagram: 1. Mixer unit; 2. Discharge chute;

[0018] 101. Open compartment; 102. Compression compartment; 103. Return water compartment; 104. Crushing compartment; 105. Conveyor piping assembly;

[0019] 106. Pressing cylinder; 107. Support chamber; 108. Positioning plate; 109. Guide rod; 110. Limiting post; 111. Pressing plate; 112. Water inlet; 113. Water return port;

[0020] 114. Agitator motor unit; 115. Toothed roller crusher unit; 116. Bottom discharge guide chute; 117. Conveyor motor; 119. Spiral conveyor roller; 120. Bottom return water layer; 121. Drainage perforated plate; 122. Replenishment return water layer; 123. Liquid level detection device; 124. External water inlet;

[0021] 201. Extension of the cabin pipe; 202. Submersion of the cabin body; 203. Return water pump. Detailed Implementation

[0022] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, which show several embodiments of the utility model. However, the utility model can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the disclosure of the utility model more thorough and comprehensive.

[0023] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly associated with those skilled in the art to which this invention pertains. The terminology used herein in the description of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0025] The present invention will be further described in detail below with reference to the accompanying drawings.

[0026] Please refer to the attached document. Figure 1 The system includes two mixer units 1 with opposite discharge ports. A discharge trough 2 is connected between the discharge ports of the two mixer units 1. The interior of each mixer unit 1 is connected vertically to an open chamber 101, a pressing chamber 102, a return water chamber 103, and a crushing chamber 104. A conveying pipe assembly 105 is provided at the bottom of the crushing chamber 104. The two conveying pipe assemblies 105 on the two mixer units 1 have opposite conveying directions and are both connected to the discharge trough 2. A conveyor belt is provided on the side of the discharge trough 2 for discharging slag.

[0027] The bottom of the discharge trough 2 is equipped with a return water pump 203 and is connected to the interior of the return water chamber 103. The upper part of the return water chamber 103 is connected to the compression chamber 102. The return water chamber 103 includes a bottom return water layer 120 disposed outside the crushing chamber 104 and a supplementary return water layer 122 disposed around the compression chamber 102. The top of the supplementary return water layer 122 is equipped with a liquid level detection device 123 and the water level detection height is laterally connected to an external water inlet 124. The bottom return water layer 120 is laterally connected to the water outlet of the return water pump 203.

[0028] The two sides of the discharge trough 2 are connected to the discharge port of the mixer unit 1. The bottom of the discharge trough 2 is provided with a sinking chamber 202. The bottom of the sinking chamber 202 is connected to the inlet of the return water pump 203. A partition can be set between the upper part of the lower chamber and the bottom discharge guide trough 116 to block the slag. The slag is spun out to the side by the conveying and rotating effect of the spiral conveyor roller 119. The conveyor belt is set at the position of the spiral conveyor roller 119 on the side of the discharge trough 2 to receive the spun-out sheet material and slag.

[0029] Please see Figure 1 The open compartment 101 is fixed above the compression compartment 102. The compression compartment 102 is equipped with a compression assembly. The compression assembly includes a support compartment 107 fixed inside the open compartment 101. A plastic inlet is formed between the support compartment 107 and the compression compartment 102. The compression movement stroke of the compression surface of the compression assembly includes the opening height of the plastic inlet. A return water inlet 113 is provided above the side wall of the compression compartment 102 and communicates with the return water compartment 103.

[0030] Please refer to Figure 1 The pressing assembly also includes multiple limiting posts 110 fixed to the inner wall of the pressing chamber 102. Each limiting post 110 is connected to a guide rod 109. The other end of each guide rod 109 is fixedly connected to a positioning plate 108. The positioning plate 108 is fixed inside the supporting chamber 107. A pressing cylinder 106 is located above the positioning plate 108. The output end of the pressing cylinder 106 is connected downwards to a pressing plate 111. The pressing plate 111 has through holes on its periphery that fit around the guide rods 109, guiding and cooperating with them. The pressing plate 111 is provided with multiple water inlets 112. There is a height gap between the top feed inlet height of the crushing chamber 104 and the minimum pushing height of the pressing plate 111. Similarly, an automatically downward closing partition can be set between the supporting chamber 107 and the pressing chamber 102 to cover the gap between the chamber and the open chamber 101. During the process of the cylinder pushing the pressing plate 111 downward, the partition automatically lowers and closes the feed inlet diameter under gravity. When the slag inside the pressing chamber 102 of a batch is crushed and lifted to the isolation gap, the partition is driven to open upward, and materials can be filled in again.

[0031] Please refer to Figure 1 The crushing chamber 104 is provided with a stirring motor unit 114 on its side. The output end of the stirring motor unit 114 is located inside the crushing chamber 104 and connected to a toothed roller crushing unit 115. The inner diameter of the crushing chamber 104 and the rotation stroke of the toothed roller crushing unit 115 are closely matched. The conveying pipe group 105 includes a bottom discharge guide trough 116 disposed at the bottom of the crushing chamber 104 and connected to the bottom of the chamber. The bottom discharge guide trough 116 is provided with a spiral conveying roller 119 and a conveying motor 117 inside. The two spiral conveying rollers 119 convey in opposite directions. The bottom of the bottom discharge guide trough 116 is provided with a drainage perforated plate 121 connected to the return water chamber 103.

[0032] The specific implementation of this utility model is as follows: When this device crushes PET plastic, the plastic material enters through the open chamber 101. When the gap between the supporting chamber 107 and the pressing chamber 102 is open, the plastic bottle enters the pressing chamber 102 through the gap. The interior of the pressing chamber 102 is filled with water. The plastic will accumulate on the water surface and partially settle to the bottom, where it will be crushed by the crushing chamber 104. During a single operation of the pressing cylinder 106, the amount of slag stacked in the gap between the feed inlet and the return water height of the return water port 113 and the highest height of the feed gap determine the amount of slag crushed in a single operation. At this time, the operation of the pressing cylinder 106 is to push the pressing plate 111 down, causing the stacked plastic to be pressed and gradually enter the water surface layer. At the same time, the plastic at the bottom of the stack is crushed by the crushing chamber 104 and squeezed downwards into the conveying range of the conveying pipe assembly 105. The crushed PET plastic flakes are then passively carried out of the mixer unit 1 and into the discharge trough 2. The crushed PET plastic flakes are then attached to the conveyor belt and transported laterally by the spiral conveyor roller 119. At the same time, most of the water in the discharge trough 2 is pumped back into the mixer unit 1 by the return water pump 203 to replenish the liquid volume delivered by the conveyor pipe group 105. Some of the water is carried out by the conveyor belt to the next stage flotation device. The missing water is replenished by the external water inlet 124. The liquid level detection device 123 monitors the water level. The water level setting height of the liquid level detection device 123 is level with the position of the return water inlet 113, so that the water level inside the mixer unit 1 is dynamically balanced. This ensures that the plastic processing and crushing process is always carried out inside the water body, reducing noise and water agitation, and simultaneously reducing the generation of crushed slag dust.

[0033] The present invention has been described above by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvement made by adopting the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other occasions without modification, shall be within the protection scope of the present invention.

Claims

1. A pet plastics wet shredding apparatus characterised in that: Including two discharge port direction opposite arrangement of mixer group (1), two said mixer group (1) discharge port between the communication is equipped with discharge chute (2), the inside of said mixer group (1) upper and lower communication is equipped with open cabin (101), pressing cabin (102), backwater cabin (103), crushing cabin (104), the bottom of said crushing cabin (104) is equipped with delivery pipe group (105), two said mixer group (1) on two said delivery pipe group (105) the delivery direction is opposite and with said discharge chute (2) communication, the side of said discharge chute (2) is equipped with conveyor belt for excluding slag material; The bottom of said discharge chute (2) is equipped with a backwater pump (203) and is communicated to the inside of said backwater cabin (103), and the upper part of said backwater cabin (103) is communicated with said pressing cabin (102).

2. A pet plastic wet-crushing device according to claim 1, characterized in that: Said open cabin (101) is fixed above said pressing cabin (102), and said pressing cabin (102) is provided with a pressing assembly in the inside, said pressing assembly comprises a supporting cabin body (107) fixed in the inside of said open cabin (101), and a plastic inlet is formed between said supporting cabin body (107) and said pressing cabin (102), and the pressing moving stroke of the pressing surface of said pressing assembly comprises the opening height of said plastic inlet; a backwater inlet (113) is arranged above the side wall of said pressing cabin (102) and communicated with said backwater cabin (103).

3. A pet plastics wet breaking apparatus as claimed in claim 2, wherein: Said pressing assembly further comprises a plurality of limiting piles (110) fixed on the inner wall of said pressing cabin (102), each of said limiting piles (110) is connected with a guide rod (109), the other end of a plurality of guide rods (109) is fixedly connected with a positioning plate (108), said positioning plate (108) is fixed in the inside of said supporting cabin body (107), a pressing cylinder (106) is arranged above said positioning plate (108), the output end of said pressing cylinder (106) is downwardly connected with a pressing plate (111), a plurality of water delivery holes (112) are arranged on said pressing plate (111), and the periphery of said pressing plate (111) is provided with through holes sleeved on the outside of said guide rods (109) and guided each other.

4. A pet plastics wet breaking apparatus as claimed in claim 3, wherein: The top feeding port height of said crushing cabin (104) and the lowest pressing height of said pressing plate (111) have a height gap.

5. A pet plastic wet-crushing device according to claim 1, characterized in that: A stirring motor group (114) is arranged on the side of said crushing cabin (104), the output end of said stirring motor group (114) is located in the inside of said crushing cabin (104) and connected with a toothed roller crushing group (115), and the inner diameter of said crushing cabin (104) and the rotating stroke of said toothed roller crushing group (115) are matched with each other.

6. A pet plastics wet breaking apparatus as claimed in claim 5, wherein: Said delivery pipe group (105) comprises a bottom discharge guide groove (116) arranged on the bottom of said crushing cabin (104) and communicated with the bottom, said bottom discharge guide groove (116) is provided with a spiral conveying roller (119) and a conveying motor (117) in the inside, the conveying directions of two said spiral conveying rollers (119) are opposite, and the bottom of said bottom discharge guide groove (116) is provided with a hydrophobic hole plate (121) communicated with said backwater cabin (103).

7. A pet plastic wet-crushing device according to claim 1, characterized in that: The backwater tank (103) comprises a bottom backwater layer (120) arranged outside the crushing tank (104) and a supplementary backwater layer (122) arranged on the side of the pressing tank (102), the top of the supplementary backwater layer (122) is provided with a liquid level detection device (123), and the water level detection height is laterally connected with an external water supplement opening (124), and the side of the bottom backwater layer (120) is connected with the water outlet end of the backwater pump (203).

8. A pet plastic wet-crushing device according to claim 1, characterized in that: The two sides of the discharge chute (2) are connected with the discharge port of the mixer set (1), and the bottom of the discharge chute (2) is provided with a sunken cabin body (202), and the bottom of the sunken cabin body (202) is connected with the inlet of the backwater pump (203).

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