CN219095596U - Screw mechanism and granulator - Google Patents

Abstract

The utility model discloses a screw mechanism and a granulator. The screw mechanism includes a screw, a barrel, and a cooling assembly. The cooling assembly comprises a cooling seat sleeved on the machine barrel, the cooling seat corresponds to the tail section of the screw rod, a cooling channel encircling the machine barrel is formed between the cooling seat and the machine barrel, and the cooling seat is provided with an inlet and an outlet which are respectively communicated with the cooling channel. During operation, the cooling liquid can flow into the cooling channel from the inlet and be discharged from the outlet, so that the material corresponding to the tail section of the screw rod can be cooled, and the situation that plastic particles formed by the granulator are bonded together is greatly reduced.

Description

Screw mechanism and granulator

Technical Field

The utility model relates to the technical field of pelleting devices, in particular to a screw mechanism and a pelleting machine.

Background

The granulator is a device for re-crushing plastic products to form and outputting plastic granules. The plastic particle recycling device can recycle the plastic products which are left and cannot be utilized in the industrial production process and the recycled plastic products, and output the plastic particles which can be reused, so that the pollution problem caused by discarding the plastic products can be relieved, and the recycling rate of the plastic can be improved.

In the related art, the temperature of the plastic product needs to be raised when the granulator works so that the plastic product can be quickly converted into a state capable of being re-extruded and formed, but the temperature cannot be too high, so that the chemical structure of the plastic is easily damaged, and the plastic product is easily bonded after being extruded and cut into granules.

It should be noted that the information disclosed in the above background section is only for enhancing understanding of the background of the present disclosure and thus may include information that does not constitute prior art known to those of ordinary skill in the art.

Disclosure of Invention

In the summary, a series of concepts in a simplified form are introduced, which will be further described in detail in the detailed description. This summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.

It is a primary object of the present utility model to overcome at least one of the above-mentioned drawbacks of the prior art and to provide a screw mechanism.

Another principal object of the present utility model is to overcome at least one of the above-mentioned drawbacks of the prior art, and to provide a pelletizer.

In order to achieve the aim of the utility model, the utility model adopts the following technical scheme:

according to one aspect of the utility model, there is provided a screw mechanism for a pelletizer, the screw mechanism comprising a screw, a barrel and a cooling assembly, the cooling assembly comprising a cooling seat fitted around the barrel, the cooling seat corresponding to the end section of the screw, and a cooling channel surrounding the barrel being formed between the cooling seat and the barrel, the cooling seat being provided with an inlet and an outlet in communication with the cooling channel respectively, a cooling fluid being able to flow into the cooling channel from the inlet and to be discharged from the outlet.

According to an embodiment of the utility model, the cooling channel is a spiral channel.

According to an embodiment of the present utility model, the outer surface of the barrel is provided with a first spiral groove, the cooling seat is provided with a second spiral groove, and the first spiral groove and the second spiral groove sandwich and form the cooling channel.

According to an embodiment of the utility model, the cooling assembly further comprises a first sealing member and a second sealing member, wherein the first sealing member and the second sealing member are respectively sleeved on the machine barrel, and the cooling channel is located between the first sealing member and the second sealing member.

According to an embodiment of the utility model, the first seal and the second seal are annular sealing rings.

According to an embodiment of the utility model, the cooling assembly further comprises a pump body, and the liquid outlet and the liquid inlet of the pump body are respectively communicated with the inlet and the outlet.

According to an embodiment of the utility model, the cooling assembly further comprises a first connecting terminal and a second connecting terminal, the first connecting terminal and the second connecting terminal are respectively connected with the inlet and the outlet in a threaded manner, and the liquid outlet and the liquid inlet of the pump body are respectively communicated with the first connecting terminal and the second connecting terminal through pipelines.

According to one embodiment of the utility model, the surface of the machine barrel is provided with a first identification part, the surface of the cooling seat is provided with a second identification part, and the cooling seat can adjust the position of the cooling seat relative to the machine barrel according to the first identification part and the second identification part.

According to another aspect of the present utility model there is provided a pelletiser comprising a blanking mechanism for pelletising extruded material and a screw mechanism, the screw mechanism being as described in still one of the above.

According to the technical scheme, the screw mechanism and the granulator have the advantages that:

the screw mechanism that this embodiment provided, through the material that the cooling module can be fine to screw rod end corresponds the cooling, guarantee that the material temperature of extrusion can not be too high, the greatly reduced material is cut into the condition that the bonding is in the same place after the granule, also helps cooling to the plastic pellet simultaneously.

Drawings

Various objects, features and advantages of the present utility model will become more apparent from the following detailed description of the preferred embodiments of the utility model, when taken in conjunction with the accompanying drawings. The drawings are merely exemplary illustrations of the utility model and are not necessarily drawn to scale. In the drawings, like reference numerals refer to the same or similar parts throughout. Wherein:

fig. 1 is a schematic view showing a structure of a pelletizer according to an exemplary embodiment.

Fig. 2 is a first structural schematic diagram of a screw mechanism according to an exemplary embodiment.

Fig. 3 is a second schematic view of a screw mechanism (with cooling mount 131 omitted) according to an example embodiment.

Fig. 4 is a schematic cross-sectional structure of a screw mechanism according to an exemplary embodiment.

Fig. 5 is a schematic view showing a structure of a cooling seat according to an exemplary embodiment.

Wherein reference numerals are as follows:

a 100-screw mechanism; 110-screw; 120-barrel; 130-a cooling component; 131A-inlet; 131B-outlet; 131-cooling seats; 132-a first seal; 133-a second seal;

200-a blanking mechanism;

b1-a first identification part; b2-a second identification portion;

m-a first helical groove; an N-second helical groove; t-cooling channels.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments can be embodied in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus detailed descriptions thereof will be omitted.

The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the utility model. One skilled in the relevant art will recognize, however, that the inventive aspects may be practiced without one or more of the specific details, or with other methods, components, materials, and so forth. In other instances, well-known structures, materials, or operations are not shown or described in detail to avoid obscuring aspects of the utility model.

In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present utility model. It will be apparent, however, to one skilled in the art that the utility model may be practiced without one or more of these details. In other instances, well-known features have not been described in detail in order to avoid obscuring the utility model.

As shown in fig. 2, 3, 4 and 5, the present embodiment provides a screw mechanism 100 for use in a pelletizer for extruding and heating a recovered plastic product so that the pelletizer extrudes and cuts the plastic product into pellets. The screw mechanism 100 includes a screw 110, a barrel 120, and a cooling assembly 130, wherein the screw 110 is configured to extrude and heat a plastic product located between the screw 110 and the barrel 120 by rotation. The cooling assembly 130 comprises a pump body and a cooling seat 131 sleeved on the machine barrel 120, the cooling seat 131 corresponds to the tail section of the screw 110, a cooling channel T surrounding the machine barrel 120 is formed between the cooling seat 131 and the machine barrel 120, the cooling seat 131 is provided with an inlet 131A and an outlet 131B which are respectively communicated with the cooling channel T, and a liquid outlet and a liquid inlet of the pump body are respectively communicated with the inlet 131A and the outlet 131B. It should be noted that the structures of the screw 110 and the barrel 120 are well known in the art, and are not described herein. Further, the end section of the screw 110 referred to herein refers to the section of the screw 110 near the discharge end.

During operation, the pump body can input cooling liquid to the cooling channel T through the inlet 131A, and the reflowed cooling liquid can flow back to the pump body through the outlet 131B, so that the materials corresponding to the tail section of the screw rod 110 can be cooled. Therefore, the plastic product can be quickly converted into a required state at a high temperature at the front section, and can be effectively cooled before discharging, so that the material is not in an excessively high temperature when being extruded out of the screw mechanism 100, and the extruded material can be greatly reduced from being bonded together when being cut into particles. Meanwhile, the material is cooled in advance, and the subsequent cooling of the granular material is facilitated.

In addition, in the present embodiment, the cooling component 130 further includes a first connection terminal and a second connection terminal, the first connection terminal and the second connection terminal are respectively screwed to the inlet 131A and the outlet 131B, and the liquid outlet and the liquid inlet of the pump body are respectively communicated with the first connection terminal and the second connection terminal through pipelines. The connection of the cooling block 131 and the pump body is greatly facilitated by the provision of the first connection terminal and the second connection terminal. In addition, it should be noted that, the middle cooling component 130 may further include a cooling fin, the cooling fin is provided with a channel through which the cooling liquid flows, and the cooling fin is made of metal material and can cool the cooling liquid rapidly, and the cooling fin belongs to the prior art and is not described herein again.

As shown in fig. 3, 4 and 5, in the present embodiment, the cooling passage T is a spiral passage. Specifically, the outer surface of the barrel 120 is provided with a first helical groove M, and the cooling jacket 131 is provided with a second helical groove N. When the cooling jacket 131 is sleeved on the barrel 120, the first and second spiral grooves M and N can be interposed with the cooling passage T. The spiral cooling channel T can enable the cooling channel T to be in contact with the machine barrel 120 more efficiently, and cooling liquid can be enabled to circulate rapidly, so that the cooling channel T is arranged into the spiral channel to cool materials in the machine barrel 120 more efficiently.

Further, as shown in fig. 4, in the present embodiment, water is used as the cooling liquid. The cooling assembly 130 further includes a first seal 132 and a second seal 133, the first seal 132 and the second seal 133 each being annular sealing rings. The first seal 132 and the second seal 133 are respectively sleeved on the barrel 120, and the cooling passage T is located between the first seal 132 and the second seal 133. By providing the first seal 132 and the second seal 133, it is possible to effectively prevent the cooling water from flowing out from the position where the cooling jacket 131 and the cylinder 120 are in contact.

As shown in fig. 2, in the present embodiment, the surface of the cylinder 120 is provided with a first identification portion B1, and the surface of the cooling jacket 131 is provided with a second identification portion B2. The first marking portion B1 is a scale provided on the surface of the cylinder 120, and the second marking portion B2 is a scale provided on the surface of the cooling jacket 131. In operation, when the cooling seat 131 is sleeved on the barrel 120, the first identification portion B1 and the second identification portion B2 can be aligned, so that the cooling seat 131 is installed in place, and the first spiral groove M and the second spiral groove N can be accurately aligned together to form a required spiral channel.

As shown in fig. 1, the present embodiment also provides a pelletizer including a cutter mechanism 200 and a screw mechanism 100. The screw mechanism 100 is used to overmold and extrude the recycled plastic product, and the blanking mechanism 200 is used to cut the extruded material into pellets. The screw mechanism 100 is the screw mechanism 100 provided in the present embodiment.

According to the granulator provided by the embodiment, the screw mechanism 100 provided with the cooling component 130 can cool down the materials corresponding to the tail section of the screw 110, so that the temperature of the extruded materials can be guaranteed not to be too high, and the situation that the materials are bonded together after being cut into particles is greatly reduced.

It should be appreciated that the various examples described above may be utilized in a variety of directions (e.g., tilted, inverted, horizontal, vertical, etc.) and in a variety of configurations without departing from the principles of the present utility model. The embodiments shown in the drawings are shown and described merely as examples of useful applications of the principles of the utility model, which are not limited to any specific details of these embodiments.

Of course, once the above description of the representative embodiments has been carefully considered, those skilled in the art will readily appreciate that numerous modifications, additions, substitutions, deletions, and other changes may be made to these specific embodiments, and such changes are within the scope of the principles of the present utility model. Accordingly, the foregoing detailed description is to be clearly understood as being given by way of illustration and example only, the spirit and scope of the present utility model being limited solely by the appended claims and equivalents thereto.

Claims (9)

1. Screw mechanism for granulator, characterized in that screw mechanism (100) include screw rod (110), barrel (120) and cooling subassembly (130), cooling subassembly (130) are including the cover arrange in cooling seat (131) of barrel (120), cooling seat (131) correspond last section of screw rod (110), just cooling seat (131) with be formed with between barrel (120) around cooling channel (T) of barrel (120), cooling seat (131) be provided with respectively with inlet (131A) and export (131B) that cooling channel (T) are linked together, the coolant liquid can follow inlet (131A) inflow cooling channel (T) and from export (131B) discharge.

2. Screw mechanism according to claim 1, characterized in that the cooling channel (T) is a spiral channel.

3. Screw mechanism according to claim 1, characterized in that the outer surface of the barrel (120) is provided with a first helical groove (M), the cooling seat (131) is provided with a second helical groove (N), the first helical groove (M) and the second helical groove (N) being interposed with the cooling channel (T).

4. The screw mechanism of claim 1, wherein the cooling assembly (130) further comprises a first seal (132) and a second seal (133), the first seal (132) and the second seal (133) are respectively sleeved on the barrel (120), and the cooling channel (T) is located between the first seal (132) and the second seal (133).

5. The screw mechanism of claim 4, wherein the first seal (132) and the second seal (133) are annular sealing rings.

6. The screw mechanism of claim 1, wherein the cooling assembly (130) further comprises a pump body, a liquid outlet and a liquid inlet of the pump body being respectively in communication with the inlet (131A) and the outlet (131B).

7. The screw mechanism of claim 6, wherein the cooling assembly (130) further comprises a first connection terminal and a second connection terminal, the first connection terminal and the second connection terminal are respectively connected to the inlet (131A) and the outlet (131B) by threads, and the liquid outlet and the liquid inlet of the pump body are respectively connected to the first connection terminal and the second connection terminal by pipelines.

8. Screw mechanism according to claim 1, characterized in that the surface of the barrel (120) is provided with a first identification portion (B1), the surface of the cooling seat (131) is provided with a second identification portion (B2), the cooling seat (131) being able to adjust the position of the cooling seat (131) with respect to the barrel (120) depending on the first identification portion (B1) and the second identification portion (B2).

9. A granulator comprising a cutting mechanism (200) and a screw mechanism (100), the cutting mechanism (200) being adapted to cut extruded material into granules, characterized in that the screw mechanism (100) is a screw mechanism according to any one of claims 1-8.

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