Air cooling structure for pelletizing cutter head of pelletizer

Abstract

The utility model relates to the technical field of plastic pelletizers, in particular to an air cooling structure for a pelletizing tool bit of a pelletizer. According to the technical scheme, an upper cover is rotationally installed on a lower guide seat through a hinge, a discharging grid plate is installed on one side in the lower guide seat, a fixing plate is installed on the sides, away from the hinge, of the lower guide seat and the upper cover, the lower guide seat and the upper cover are locked and fixed through bolts and nuts, an air inlet pipe is installed on the upper cover in an inserted mode, and an air outlet pipe is installed on the lower guide seat. And the air inlet pipe is positioned right above the discharging grid plate. The pressure stabilizing tank is mounted at the air inlet pipe, so that the pressure of entering air is stable, and the air is uniformly dispersed and jetted by matching with the air distribution pipe and the linear air port in the air inlet pipe; the top end of the upper cover is designed to be arched and is attached to the air distribution pipe, so that the air cooling effect on the pelletizing cutter head is enhanced in all directions; meanwhile, the fixed sleeve with the scraper is rotationally mounted in the discharging grid plate, so that raw materials can be cut off, slag generation and adhesion are reduced, and the product quality is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of plastic granulator, specifically relates to a granulator cutting knife head air cooling structure. BACKGROUND

[0002] The plastic granulator is an apparatus for producing plastic particles, and in the process of producing and processing plastic particles by the granulator, the regenerated plastic products need to be remelted and reprocessed. In the subsequent process of cutting plastic strips, the plastic particles still contain residual heat. Under the influence of this heat, the probability of mutual adhesion between the plastic particles increases during the subsequent conveying or collecting process. Therefore, the plastic particles need to be cooled during the production process.

[0003] After searching, the patent application number CN202320848865.8 discloses a plastic granulator cutting end cooling structure. Although the device uses air cooling and water cooling to cool the plastic particles when in use, it improves the processing cooling efficiency of the plastic particles to a certain extent. However, the device lacks direct and effective air cooling measures for the cutting knife head itself. The heat generated by the cutting knife head during work cannot be dissipated in time, which can easily cause the temperature of the knife head to be too high, causing slag to adhere to the knife head. The slag is easy to melt under the continuous high temperature, and once it falls into the material, it will affect the product quality. UTILITY MODEL CONTENTS

[0004] In view of the deficiencies of the prior art, the utility model provides a granulator cutting knife head air cooling structure, which solves the problems raised in the background art.

[0005] The technical problems solved by the utility model are as follows:

[0006] A granulator cutting knife head air cooling structure, comprising a lower guide seat, wherein the lower guide seat is rotatably installed with an upper cover through a hinge;

[0007] A discharge grate is installed on one side of the lower guide seat, a fixed plate is installed on the side of the lower guide seat and the upper cover away from the hinge, the lower guide seat and the upper cover are locked and fixed through the fixed plate, bolts and nuts, an air inlet pipe is inserted and installed on the upper cover, and the air inlet pipe is located directly above the discharge grate.

[0008] On the basis of the above technical scheme, the utility model can also be improved as follows.

[0009] Further, the top end of the upper cover is provided with a filter screen, a pressure stabilizing tank is installed on one side of the filter screen on the upper cover, and an external air source is communicated with the air inlet pipe through the pressure stabilizing tank.

[0010] The beneficial effects of adopting the above further scheme are:

[0011] The pressure stabilizing tank can stabilize the pressure of the external air source, so that the gas pressure entering the air inlet pipe remains stable. Stable gas pressure can ensure that the gas flow sprayed from the air inlet pipe and the subsequent air distribution pipe air port is uniform and stable, thereby ensuring that the air cooling effect on the pelletizer cutter head is uniform and consistent, avoiding the situation that some areas are insufficiently cooled or excessively cooled due to pressure fluctuations, and improving the reliability and stability of the air cooling structure.

[0012] Further, the air distribution pipe is provided on the inner surface of the upper cover, and the air port is linearly arranged on the air distribution pipe.

[0013] The beneficial effects of adopting the above further scheme are:

[0014] The air distribution pipe can disperse the gas entering from the air inlet pipe, and the linearly arranged air port can spray the gas in a more uniform manner, thereby expanding the coverage range of the gas. This can comprehensively and carefully air cool the cutter head, effectively reduce the overall temperature of the cutter head, reduce the problem of slag adhesion or over-plasticization caused by local high temperature, and improve the cooling efficiency and effect.

[0015] Further, the top end of the upper cover is arc-shaped, and the air distribution pipe is attached to the inner top end of the upper cover.

[0016] The beneficial effects of adopting the above further scheme are:

[0017] The arc-shaped top end of the upper cover is conducive to the flow and diffusion of the gas inside, which can reduce the resistance of the gas flow and make the gas flow more smoothly to the area where the cutter head is located. The air distribution pipe is attached to the inner top end of the upper cover, which can better utilize the space advantage of the arc-shaped structure to uniformly cover the cutter head, thereby enhancing the uniformity and comprehensiveness of air cooling and further improving the cooling effect.

[0018] Further, the discharge grate is provided with a discharge port, the lower guide seat is rotatably provided with a fixing sleeve, and the lower guide seat is provided with a driving motor connected with the fixing sleeve. The fixing sleeve is provided with a cutter head, which can cut the raw material leaking from the discharge port.

[0019] The beneficial effects of adopting the above further scheme are:

[0020] The cutter head can timely cut the raw material leaking from the discharge port, thereby avoiding the accumulation of raw material around the cutter head to form slag. Reducing the generation of slag also reduces the possibility of slag adhering to the cutter head, and prevents the slag from over-plasticizing under continuous high temperature, thereby avoiding the over-plasticized slag falling into the material to cause quality problems such as bagging and granulation during subsequent processing, and ensuring the product quality and smooth production.

[0021] Further, the contact surface of the lower guide seat and the upper cover is provided with a sealing gasket.

[0022] The beneficial effects of the above further scheme are:

[0023] The sealing gasket can effectively fill the gap between the contact surface of the lower guide seat and the upper cover, preventing gas leakage. This not only ensures the stability of the air cooling system and ensures that there is enough gas to cool the cutter head, but also prevents external dust, impurities, etc. from entering the air cooling structure, affecting the normal operation and cooling effect of the equipment, and prolonging the service life of the equipment.

[0024] The utility model provides a pelletizer cutting knife head air cooling structure. Has the following beneficial effects:

[0025] The contact surface of the lower guide seat and the upper cover is provided with a sealing gasket, which can effectively prevent gas leakage and ensure the stability and cooling effect of the air cooling system.

[0026] The fixed sleeve with a cutter head is rotatably installed on the discharge grate, the cutter head can cut off the raw materials leaking from the discharge port, avoid the accumulation of raw materials near the cutter head, reduce the generation of slag, and prevent the slag from adhering to the cutter head.

[0027] The lower guide seat and the upper cover are locked and fixed by the fixed plate, bolts and nuts on the side away from the hinge. This installation method is convenient for equipment assembly and disassembly, and facilitates subsequent maintenance and maintenance of the cutter head.

[0028] The upper cover is provided with a pressure stabilizing tank, and the external gas source is communicated with the air inlet pipe through the pressure stabilizing tank, which can stably supply air to the air inlet pipe, ensure the uniformity and stability of the air cooling, and be beneficial to improve the cooling effect of the cutter head.

[0029] The air distribution pipe on the air inlet pipe located in the inner surface of the upper cover is linear, and the air distribution pipe is attached to the inner top end of the upper cover, so that the gas can be uniformly distributed in the upper cover, and the cutter head is fully and uniformly air cooled and cooled, effectively reducing the temperature of the cutter head and reducing the plasticization of the slag due to high temperature.

[0030] Through effective cooling, the slag is prevented from being dropped into the material due to plasticization under high temperature, the problem of bagging and granulating during subsequent processing caused by non-plasticization is prevented, the product quality is improved, and the clean working environment of the cutter head is ensured.

[0031] The top end of the upper cover is arched, which is beneficial to the flow and distribution of gas in the interior, and also increases the stability and strength of the structure, providing a reliable external environment for stable operation of the cutter head. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 It is a schematic view of the utility model from the bottom;

[0033] Figure 2 It is the front view appearance schematic view of the utility model;

[0034] Figure 3 It is the upper cover open structure schematic view of the utility model;

[0035] Figure 4 It is the upper cover open structure schematic view of the utility model.

[0036] Mark explanation: 1, lower guide seat; 101, blanking port; 2, fixed plate; 3, air inlet pipe; 301, air port; 302, air distribution pipe; 4, filter screen; 5, upper cover; 6, discharge grate; 601, discharge port; 602, fixed sleeve; 603, tool bit; 7, hinge. DETAILED DESCRIPTION

[0037] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0038] Please refer to Figures 1 to 4 The embodiments provided by the utility model:

[0039] The application discloses a pelletizer cutting knife head air cooling structure, which comprises a lower guide base 1, wherein an upper cover 5 is rotatably installed on the lower guide base 1 through a hinge 7, and the contact surface of the lower guide base 1 and the upper cover 5 is provided with a sealing gasket. The sealing gasket can effectively fill the gap between the contact surface of the lower guide base 1 and the upper cover 5, and prevent gas leakage. This not only ensures the stability of the gas pressure in the air cooling system, ensures that there is enough gas to cool the knife head 603, but also avoids the entry of external dust, impurities and the like into the air cooling structure, affects the normal operation and cooling effect of the equipment, prolongs the service life of the equipment, and the inside of the lower guide base 1 is provided with a discharge grating 6, the discharge grating 6 is provided with a discharge port 601 penetratingly arranged thereon, the lower guide base 1 is rotatably provided with a fixing sleeve 602, the lower guide base 1 is provided with a driving motor connected with the fixing sleeve 602, the fixing sleeve 602 is provided with the knife head 603, the raw material leaked from the discharge port 601 is cut off through the knife head 603, and the raw material is prevented from being accumulated around the knife head 603 to form slag. The generation of slag is reduced, the possibility of slag adhering to the knife head 603 is reduced, slag is prevented from being over-plasticized under continuous high temperature, over-plasticized slag is prevented from falling into the material to cause quality problems such as bagging and granulation during subsequent processing, the product quality and the smooth production are ensured, the lower guide base 1 and the upper cover 5 are provided with a fixing plate 2 away from the hinge 7, and the lower guide base 1 and the upper cover 5 are locked and fixed through the fixing plate 2, bolts and nuts.

[0040] In order to improve the air cooling effect of the pelletizer cutting knife head, ensure the stable operation of the equipment and the product quality, and the like, Figures 1 to 4As shown, the utility model still includes: the upper cover 5 inserts and installs the air inlet pipe 3, the air inlet pipe 3 is located directly above the discharge grating 6, the top of upper cover 5 is equipped with the filter screen 4, the upper cover 5 is installed with the pressure stabilizing tank on the side of filter screen 4, the external air source is communicated with the air inlet pipe 3 through the pressure stabilizing tank, the pressure stabilizing tank can carry out pressure stabilizing treatment to the external air source, makes the gas pressure that enters the air inlet pipe 3 keep stable. Stable air pressure can guarantee that the airflow that sprays from air inlet pipe 3 and subsequent air distribution pipe 302 gas port 301 is uniform and stable, thereby ensuring that the air cooling effect of pelletizer cutting pelletizer head 603 is uniform, avoids the situation that some areas are insufficiently cooled or excessively cooled due to air pressure fluctuation, improves the reliability and stability of air cooling structure, the internal surface of upper cover 5 is equipped with air distribution pipe 302, air distribution pipe 302 is equipped with gas port 301 in the form of line, and the gas port 301 is in the form of line, the setting of air distribution pipe 302 can disperse the gas entering from air inlet pipe 3, and the gas port 301 in the form of line can make the gas spray out in a more uniform manner, expanding the coverage range of the gas. This can comprehensively and carefully air cool cutting pelletizer head 603, effectively reduce the overall temperature of the head 603, reduce the problem of slag adhesion or over-plastic caused by local high temperature, improve the efficiency and effect of cooling, the top of upper cover 5 is in the form of arch, and air distribution pipe 302 is attached to the internal top of upper cover 5, the top of the arch-shaped upper cover 5 is beneficial to the flow and diffusion of the gas inside, can reduce the resistance of the gas flow, so that the gas can more smoothly reach the area where the cutting pelletizer head 603 is located. Air distribution pipe 302 is attached to the internal top of upper cover 5, can better utilize the space advantage of the arch-shaped structure, make the gas uniformly cover the head 603, enhance the uniformity and comprehensiveness of air cooling, further improve the cooling effect.

[0041] Working principle:

[0042] Firstly, during the installation stage, the lower guide seat 1 and the upper cover 5 are locked and fixed through the fixing plate 2, the bolt and the nut, the sealing gasket of the contact surface between the two guarantees the sealing property of the overall structure, prevents gas leakage during the air cooling process, and lays a foundation for subsequent stable cooling.

[0043] When the equipment is running, the external air source first enters the pressure stabilizing tank, the pressure stabilizing tank plays a pressure stabilizing role, the gas pressure entering the air inlet pipe 3 is stable, and the consistency of the air cooling effect is ensured. The stable gas enters the inside of the upper cover 5 through the air inlet pipe 3, since the air distribution pipe 302 is arranged inside the air inlet pipe 3, and the gas port 301 in the form of line on the air distribution pipe 302 is attached to the arched top of the upper cover 5, the gas can be uniformly diffused, the head 603 located at the discharge grating 6 is comprehensively and uniformly cooled, the heat generated during the operation of the head 603 is quickly taken away, and the temperature of the head 603 is reduced.

[0044] In the raw material processing link, the raw material passes through the discharge port 601 on the discharge grate 6, the fixed sleeve 602 rotatingly installed in the discharge grate 6 drives the cutter head 603 to rotate, and the cutter head 603 cuts the raw material leaking from the discharge port 601 by utilizing the structure thereof, so as to avoid the raw material from accumulating around the cutter head 603 to form slag. Since the cutter head 603 is effectively air-cooled, even if a small amount of slag is generated, it can also be prevented from being over-plasticized at high temperature. Once the over-plasticized slag falls into the material, it will cause problems such as bagging and granulation in subsequent processing, and the air-cooling structure can continuously cool down to ensure the quality of the raw material and the smooth progress of subsequent processing.

[0045] The basic principle and main features of the utility model and the advantages of the utility model are shown and described above, and it is obvious for those skilled in the art that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic features of the utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, and the scope of the utility model is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0046] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description manner of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that those skilled in the art can understand.

Claims

1. A granulator cutting knife head air cooling structure, comprising a lower guide seat (1), the lower guide seat (1) is rotatably installed with an upper cover (5) through a hinge (7), characterized in that: a discharge grate (6) is installed on one side of the inside of the lower guide seat (1), the lower guide seat (1) and the upper cover (5) are installed with a fixed plate (2) on the side away from the hinge (7), the lower guide seat (1) and the upper cover (5) are locked and fixed through the fixed plate (2), bolts and nuts, an air inlet pipe (3) is inserted and installed on the upper cover (5), and the air inlet pipe (3) is located directly above the discharge grate (6).

2. The air cooling structure of the pelletizer cutting head according to claim 1, characterized in that: A filter screen (4) is arranged at the top end of the upper cover (5), a pressure stabilizing tank is installed on one side of the filter screen (4) on the upper cover (5), and an external air source is communicated with the air inlet pipe (3) through the pressure stabilizing tank.

3. The air cooling structure of the pelletizer cutting head according to claim 1, characterized in that: A gas distribution pipe (302) is arranged on the inner surface of the upper cover (5), a gas port (301) is formed through the gas distribution pipe (302), and the gas port (301) is linear.

4. The air cooling structure of the pelletizer cutting head according to claim 1, characterized in that: The top end of the upper cover (5) is arc-shaped, and the gas distribution pipe (302) is attached to the inner top end of the upper cover (5).

5. The air cooling structure of the pelletizer cutting head according to claim 1, characterized in that: A discharge port (601) is formed through the discharge grate (6), a fixed sleeve (602) is rotatably installed on the lower guide seat (1), a driving motor connected with the fixed sleeve (602) is arranged on the lower guide seat (1), a knife head (603) is arranged on the fixed sleeve (602), and the raw materials leaked from the discharge port (601) are cut off through the knife head (603).

6. The air cooling structure of the pelletizer cutting head according to claim 1, characterized in that: A sealing gasket is arranged on the contact surface of the lower guide seat (1) and the upper cover (5).

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