Plastic particle production equipment

Abstract

The utility model relates to the field of plastics, in particular to plastic particle production equipment, and aims to solve the technical problems that in the prior art, plastics are generally extruded into strips to be directly discharged into a water tank to be cooled and granulated, but the plastic strips deform under the influence of gravity in the falling process and are easy to break under the influence of vertical water flow. The extrusion end of the lower portion of the extruder is communicated with a circulation chamber, the circulation chamber is immersed in water in the water tank, water is injected into the circulation chamber from the upper portion of the circulation chamber through a water circulation system, water is drained from the lower portion of the circulation chamber, a strip outlet is formed in the bottom of the circulation chamber, and a pelletizing mechanism is arranged on the lower portion of the strip outlet. The water temperature of the upper circulation chamber is kept the lowest all the time, extruded plastic strips are rapidly cooled and shaped, the water circulating from top to bottom is parallel to the movement direction of the plastic strips, and the plastic strips are prevented from being deformed due to impact.

Description

Technical Field

[0001] The utility model relates to the field of plastics, in particular to a plastic particle production device. Background Art

[0002] Plastic granules refer to granular plastics, including polypropylene-based granules, nylon-based granules, high-density polyethylene-based granules, low-density polyethylene-based granules, and polybutylene terephthalate-based granules. The current process for producing plastic granules is to mix and stir the resin matrix, flame retardant, antioxidant, lubricant, nucleating agent, toughening agent, etc., and then put them into the extruder for extrusion molding and then cut into granules;

[0003] In the prior art, plastic is usually extruded into strips and directly discharged into a water tank for cooling and pelletizing. However, the plastic strips are deformed by gravity during the falling process and are easily broken by the vertical water flow. The utility model solves the above problems. Utility Model Content

[0004] The utility model provides a plastic granule production device to solve the technical problems that the prior art usually extrude plastic into strips and directly discharge them into a water tank for cooling and pelletizing, but the plastic strips are deformed by gravity during falling and are easily broken by the vertical water flow.

[0005] A plastic granule production device comprises: an extruder, the extruder is vertically arranged, the lower extrusion end of the extruder is connected to a circulation chamber, the circulation chamber is immersed in water in a water tank, the circulation chamber is filled with water at the top and drained at the bottom through a water circulation system, a strip outlet is arranged at the bottom of the circulation chamber, and a pelletizing mechanism is arranged below the strip outlet.

[0006] Furthermore, the water circulation system includes a liquid pump, which is immersed in water. The liquid pump is connected to the annular cover through a liquid pipe. The annular cover is sealed and buckled on the outside of the liquid inlet hole. There is no liquid inlet hole at the direct outlet of the liquid pipe. The liquid inlet hole is located on the upper side wall of the circulation chamber, and a liquid outlet hole is provided on the lower side wall of the circulation chamber.

[0007] Furthermore, the pelletizing mechanism includes a sliding rod, which is sealingly and slidably connected to the side wall of the water tank, one end of the sliding rod is connected to the telescopic end of the cylinder, and the other end of the sliding rod is connected to the cutter frame. A cutter is connected to the cutter frame, and the cutter can be stored in the gap at the outlet. The cutter contacts the lower surface of the circulation chamber, and the cutter frame is slidably connected to the slide rail, and the slide rail is connected to the lower surface of the circulation chamber.

[0008] Furthermore, a belt conveyor is provided at the lower part of the circulation chamber, a baffle is connected to the belt surface of the belt conveyor, and the belt conveyor extends obliquely upward to the upper part of the water tank.

[0009] Beneficial effects of the utility model:

[0010] When the plastic strip is extruded and enters the circulation chamber, it enters the water. The water in the circulation chamber circulates at a uniform speed from top to bottom, so that the water temperature in the upper circulation chamber is always kept at the lowest. The extruded plastic strip is quickly cooled and shaped, and the water circulating from top to bottom is parallel to the movement direction of the plastic strip to prevent the plastic strip from being deformed by impact.

[0011] The water impact from the annular cover buffer tube causes water to enter the circulation chamber from the liquid inlet holes evenly distributed in the circumferential direction, preventing the plastic strip from being broken or deformed by direct impact. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the utility model;

[0013] Figure 2 It is a schematic diagram of the structural section of the utility model;

[0014] Figure 3 It is a schematic structural diagram of a pelletizing mechanism 5 of the utility model.

[0015] In the figure: extruder 1; circulation chamber 2; water tank 3; water circulation system 4; liquid pump 41; liquid pipe 42; annular cover 43; liquid outlet 44; pelletizing mechanism 5; slide bar 51; cutter frame 52; cutter 53; slide rail 54; strip outlet 6; belt conveyor 7; baffle 8. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] The rotational connection described in this device refers to the process of baking the bearing on the shaft, providing a spring retaining ring groove on the shaft or the shaft hole, and clamping the elastic retaining ring in the retaining ring groove to achieve axial fixation of the bearing and realize rotation; the articulation refers to a connection method that is active on connecting parts such as hinges, pins and short shafts.

[0018] The present invention will be described in detail below with reference to the accompanying drawings. Example

[0019] The following is combined with Figure 1-3 The present embodiment describes a plastic pellet production device, comprising: an extruder 1, the extruder 1 is vertically arranged, the lower extrusion end of the extruder 1 is connected to a circulation chamber 2, the circulation chamber 2 is immersed in water in a water tank 3, the circulation chamber 2 is filled with water from the upper part and drained from the lower part through a water circulation system 4, a strip outlet 6 is arranged at the bottom of the circulation chamber 2, and a pelletizing mechanism 5 is arranged below the strip outlet 6;

[0020] The extruder 1 extrude the hot-melt plastic strips into the circulation chamber 2, which is immersed in the water of the water tank 3. After the hot-melt plastic strips enter the water, the outer surface is quickly shaped, and the circulation chamber 2 is filled with water at the top and drained at the bottom through the water circulation system 4. The water temperature of the upper circulation chamber 2 is always kept at the lowest, and the water circulating from top to bottom is parallel to the movement direction of the plastic strips to prevent the plastic strips from being deformed by lateral impact. The cooled plastic strips are discharged through the strip outlet 6, and the pelletizing mechanism 5 cooperates with the strip outlet 6 to pelletize the plastic strips.

[0021] The water circulation system 4 includes a liquid pump 41, which is immersed in water. The liquid pump 41 is connected to an annular cover 43 through a liquid pipe 42. The annular cover 43 is sealed and buckled on the outside of the liquid inlet hole. There is no liquid inlet hole at the direct water outlet of the liquid pipe 42. The liquid inlet hole is located on the upper side wall of the circulation chamber 2, and a liquid outlet hole 44 is provided on the lower side wall of the circulation chamber 2.

[0022] The liquid pump 41 draws water from the water tank 3 and injects it into the annular cover 43 through the liquid pipe 42. Since there is no liquid inlet hole at the water outlet of the liquid pipe 42, the water collides with the upper side wall of the circulation chamber 2 and flows to both sides along the annular cover 43. After pressure relief and buffering, the water enters the circulation chamber 2 through the liquid inlet hole, and then flows downward and is discharged through the liquid outlet hole 44, which will not impact and deform the plastic strip.

[0023] The pelletizing mechanism 5 includes a slide bar 51, which is sealed and slidably connected to the side wall of the water tank 3, one end of the slide bar 51 is connected to the telescopic end of the cylinder, and the other end of the slide bar 51 is connected to a cutter frame 52, a cutter 53 is connected inside the cutter frame 52, and the cutter 53 can be stored in the gap of the strip outlet 6, and the cutter 53 contacts the lower surface of the circulation chamber 2, and the cutter frame 52 is slidably connected to a slide rail 54, and the slide rail 54 is connected to the lower surface of the circulation chamber 2;

[0024] The cylinder is extended and retracted to drive the slide bar 51 to slide, and the slide bar 51 drives the cutter frame 52 and the cutter 53 to reciprocate, and the plastic strips discharged from the strip outlet 6 are pelletized at the same time to ensure that the particle size of the plastic particles is consistent.

[0025] A belt conveyor 7 is provided at the lower part of the circulation chamber 2, a baffle 8 is connected to the belt surface of the belt conveyor 7, and the belt conveyor 7 extends obliquely upward to the upper part of the water tank 3;

[0026] The plastic particles fall onto the belt conveyor 7 and are pushed upward by the baffle 8 to be discharged.

[0027] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A plastic granule production equipment, characterized in that: include: An extruder (1) is arranged vertically, and a circulation chamber (2) is connected to the lower extrusion end of the extruder (1), the circulation chamber (2) is immersed in water in a water tank (3), water is injected from the upper part of the circulation chamber (2) and drained from the lower part through a water circulation system (4), a strip outlet (6) is provided at the bottom of the circulation chamber (2), and a pelletizing mechanism (5) is provided below the strip outlet (6).

2. A plastic granule production equipment according to claim 1, characterized in that: The water circulation system (4) comprises a liquid pump (41), the liquid pump (41) being immersed in water, the liquid pump (41) being connected to an annular cover (43) via a liquid pipe (42), the annular cover (43) being sealed and buckled on the outside of a liquid inlet hole, no liquid inlet hole being provided at a point where water directly flows out of the liquid pipe (42), the liquid inlet hole being located on an upper side wall of the circulation chamber (2), and a liquid outlet hole (44) being provided on a lower side wall of the circulation chamber (2).

3. A plastic granule production equipment according to claim 1, characterized in that: The pelletizing mechanism (5) comprises a slide bar (51) which is sealingly and slidably connected to the side wall of the water tank (3); one end of the slide bar (51) is connected to the telescopic end of the cylinder; the other end of the slide bar (51) is connected to a cutter frame (52); a cutter (53) is connected inside the cutter frame (52); the cutter (53) can be stored in the gap of the strip outlet (6); the cutter (53) contacts the lower surface of the circulation chamber (2); the cutter frame (52) is slidably connected to a slide rail (54); and the slide rail (54) is connected to the lower surface of the circulation chamber (2).

4. A plastic granule production equipment according to claim 1, characterized in that: A belt conveyor (7) is provided at the lower part of the circulation chamber (2), a baffle (8) is connected to the belt surface of the belt conveyor (7), and the belt conveyor (7) extends obliquely upward to the upper part of the water tank (3).

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