Cooling device for improving efficiency of granulator

Abstract

The utility model belongs to the technical field of granulator production, and particularly relates to a cooling device for improving the efficiency of a granulator, which comprises a granulator body, a sealing cover is fixedly mounted at the top of the granulator body, a power cavity is formed in the sealing cover, a fixing plate is fixedly mounted in the power cavity, a plurality of through holes are formed in the fixing plate, and the through holes are communicated with the power cavity. Two sliding plates are slidably mounted in the power cavity and located on the top of the fixing plate. The driving assembly is located in the sealing cover and used for driving the two sliding plates to slide; and the ventilation pipe is fixedly installed at the top of the sealing cover and located over the power cavity, the ventilation pipe is communicated with the power cavity, and an air inlet pipe is fixedly installed at the top of the ventilation pipe. When the whole device is used, the interior of the granulator body can be cooled, and the air inlet speed and size can be adjusted according to the work progress; and meanwhile, external air can be filtered through the arranged filter screen, and the filter screen is convenient to replace.

Description

Technical Field

[0001] The utility model belongs to the technical field of pelletizer production, and in particular relates to a cooling device for improving the efficiency of a pelletizer. Background Art

[0002] Plastic pelletizer is a mechanical equipment used to process waste plastics. It is mainly used to cut waste plastic films, woven bags, agricultural bags, basins, barrels, beverage bottles, furniture, daily necessities, etc. into small particles.

[0003] For example, the Chinese patent with the publication number CN210850925U discloses a plastic pelletizer, the technical solution of which is as follows: it includes a cutting box, the cutting box is provided with a feed inlet and a discharge inlet, a pelletizing mechanism for cutting plastic strips is provided in the cutting box, the feed inlet extends into the cutting box and a workbench is provided, two limit plates for collecting plastic strips are provided on the workbench, and a passage space for plastic strips to pass through is formed between the two limit plates, the smaller end of the passage space faces the pelletizing mechanism, and the larger end of the passage space faces the feed inlet, the workbench is provided with an adjustment mechanism, the adjustment mechanism includes a guide column and two slide bars, the guide column is provided with a through hole along the direction in which the two limit plates approach or move away from each other, one end of the slide bar passes through the through hole and is connected to the side wall of the limit plate, and a driving assembly for driving the slide bar to move is provided between the guide column and the slide bar. The device can evenly cut different numbers of cut plastic strips according to the effect of being able to do so.

[0004] The above patent has the following problems:

[0005] This patent has some disadvantages when in use, such as: when the above device is in continuous operation, due to long-term friction and operation, the device may gradually heat up, which may cause the material inside the device to agglomerate and clog, and even cause the blade to entangle in severe cases. Once such a problem occurs, the operator needs to stop the machine, disassemble it, and perform tedious cleaning work, which undoubtedly wastes a lot of time. In view of this, we propose a cooling device for improving the efficiency of the pelletizer. Utility Model Content

[0006] The purpose of the utility model is to provide a cooling device for improving the efficiency of a pelletizer, so as to solve the problems raised in the above background technology.

[0007] In view of this, the utility model provides a cooling device for improving the efficiency of a pelletizer, comprising:

[0008] A pelletizer body, wherein a sealing cover is fixedly installed on the top of the pelletizer body, a power cavity is opened in the sealing cover, a fixing plate is fixedly installed in the power cavity, a plurality of through holes are opened on the fixing plate, and two sliding plates are slidably installed in the power cavity and on the top of the fixing plate;

[0009] A driving assembly, which is located in the sealing cover and is used to drive the two sliding plates to slide;

[0010] A ventilation pipe, the ventilation pipe is fixedly installed on the top of the sealing cover and is located directly above the power chamber, the ventilation pipe is communicated with the power chamber, an air inlet pipe is fixedly installed on the top of the ventilation pipe, an exhaust fan is fixedly installed on one end of the air inlet pipe, and the air inlet pipe is communicated with the ventilation pipe, and a filter is plugged and installed on one side of the ventilation pipe and directly below the air inlet pipe;

[0011] The fixing component is located in the ventilation duct and is used to fix the position of the filter screen.

[0012] In the technical scheme, when the equipment starts to work, the exhaust fan is started, and the exhaust fan draws the outside wind from the air inlet pipe into the ventilation pipe. Then the outside wind passes through the filter and enters the top of the two sliding plates. The wind passes through the fixed plate and enters the pelletizer body, which can cool the pelletizer body. When the pelletizer body has been working for a long time, the power of the exhaust fan is increased. At this time, the outside wind will quickly enter the top of the fixed plate. Through the set driving component, the two sliding plates can be driven to slide and move away from each other. Then, all the through holes on the fixed plate can be ventilated, so that the outside wind can quickly enter the pelletizer body through the through holes, which can avoid the situation that the temperature in the pelletizer body is too high and agglomerates. At the same time, the air intake speed and size can be adjusted according to the work progress.

[0013] The filter net can filter the outside wind to prevent the outside dirt from entering the pelletizer body. When the filter net needs to be replaced after long-term use, the filter net can be pulled out through the drive assembly, and the fixed column will be detached from the sliding groove, which is convenient for disassembly of the filter net.

[0014] When a new filter needs to be installed, the filter is first inserted into the ventilation pipe. The position of the filter can be fixed by the provided driving assembly, which facilitates the installation of the new filter.

[0015] In the above technical solution, further, the driving component includes:

[0016] Two racks, the two racks are fixedly mounted on one side of the two sliding plates respectively, the racks are slidably connected to the power chamber, two first gears are rotatably mounted in the power chamber, and the two first gears are respectively located on one side of the two racks, the two first gears are respectively meshed with the two racks, and bevel gear 1 is fixedly mounted on the ends of the two first gears close to each other;

[0017] The motor is fixedly mounted on one side of the sealing cover, and the motor is located on one side of the sliding plate. The output shaft of the motor passes through the sealing cover and extends into the power chamber and is fixedly mounted with bevel gear 2. The bevel gear 2 is rotationally connected to the power chamber, the bevel gear 2 is located between two bevel gears 1, and the bevel gear 2 is meshed with the bevel gear 1.

[0018] In the present technical scheme, when the equipment just starts to work, the exhaust fan is started, and the exhaust fan draws the outside wind from the air inlet pipe into the ventilation pipe. Then the outside wind passes through the filter and enters the top of the two sliding plates. The wind passes through the fixed plate and enters the pelletizer body, which can cool the pelletizer body. When the pelletizer body has been working for a long time, the power of the exhaust fan is increased. At this time, the outside wind will quickly enter the top of the fixed plate, and the motor is started at the same time. The motor is powered on and drives the bevel gear 2 to rotate. The bevel gear 2 drives the two bevel gears meshing with it to rotate in the opposite direction. The two bevel gears respectively drive the two first gears to rotate in the opposite direction. The two first gears respectively drive the two racks meshing with it to slide and move away from each other. Then, all the through holes on the fixed plate can be ventilated, so that the outside wind can quickly enter the pelletizer body through the through holes, which can avoid the situation where the temperature in the pelletizer body is too high and agglomeration occurs. At the same time, the air intake speed and size can be adjusted according to the work progress.

[0019] In the above technical solution, further, the fixing assembly includes:

[0020] A sliding groove is provided in the ventilation duct and is located on one side of the filter screen. A fixed column fixed to one side of the filter screen is slidably installed in the sliding groove. A limit block is slidably installed in the sliding groove and on one side of the fixed column. A plurality of springs fixed to the inner wall of the sliding groove are fixedly installed on the top of the limit block. One side of the limit block contacts the fixed column, and the other side of the limit block passes through the sliding groove and extends to the outside.

[0021] In the technical solution, the filter screen can filter the outside wind to prevent the outside dirt from entering the pelletizer body. When the filter screen needs to be replaced after long-term use, the limit block is first pulled upward, and the springs are squeezed and contracted. When the limit block slides to a suitable position, the filter screen can be pulled outward, and the fixed column will be detached from the sliding groove, which is convenient for disassembly of the filter screen.

[0022] When a new filter needs to be installed, first insert the filter into the ventilation duct, and then the fixing column will squeeze the inclined surface on the limit block, causing the limit block to slide upward, and at the same time, several springs are squeezed and contracted. When the fixing column slides to a suitable position, the limit block is no longer squeezed, and under the action of the rebound force of several springs, the limit block slides downward, and then the limit block can fix the position of the fixing column, thereby further fixing the position of the filter and facilitating the installation of the new filter.

[0023] In the above technical solution, further, the side of the limit block away from the fixed column is inclined.

[0024] In the technical solution, it is ensured that the sliding of the fixed column will squeeze the inclined surface on the limiting block, so that the limiting block slides upward.

[0025] In the above technical solution, further, the output shaft of the motor is rotationally connected to the sealing cover and the power chamber.

[0026] In this technical solution, it is ensured that the output shaft of the motor can rotate in the sealing cover and the power cavity.

[0027] In the above technical solution, further, the width of the two sliding plates is the same as the width of the fixed plate.

[0028] In this technical solution, it is ensured that the sliding plate can block the through hole on the fixed plate.

[0029] The beneficial effects of the utility model are:

[0030] 1. The cooling device for improving the efficiency of the pelletizer starts the exhaust fan, which draws the outside wind from the air inlet pipe into the ventilation pipe. Then the outside wind passes through the filter and enters the top of the two sliding plates. The wind passes through the fixed plate and enters the pelletizer body, which can cool the pelletizer body. When the pelletizer body has been working for a long time, the power of the exhaust fan is increased. At this time, the outside wind will quickly enter the top of the fixed plate. Through the set driving component, the two sliding plates can be driven to slide and move away from each other. Then, all the through holes on the fixed plate can be ventilated, so that the outside wind can quickly enter the pelletizer body through the through holes, which can avoid the situation where the temperature in the pelletizer body is too high and agglomerates. At the same time, the air intake speed and size can be adjusted according to the work progress.

[0031] 2. The cooling device for improving the efficiency of the pelletizer can filter the outside wind through the filter screen to prevent the outside dirt from entering the pelletizer body. When the filter screen needs to be replaced after a long period of use, the filter screen can be pulled out through the drive assembly, and the fixed column will be detached from the sliding groove, which is convenient for disassembly of the filter screen;

[0032] When a new filter needs to be installed, the filter is first inserted into the ventilation pipe. The position of the filter can be fixed by the provided driving assembly, which facilitates the installation of the new filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0034] Figure 2 It is a schematic diagram of the cross-sectional structure of the ventilation pipe of the utility model;

[0035] Figure 3 The utility model Figure 2 The enlarged structural diagram at A in the middle;

[0036] Figure 4 It is a schematic diagram of the sliding plate area structure of the utility model;

[0037] Figure 5 It is a schematic diagram of the fixed plate area structure of the utility model;

[0038] Figure 6 It is a schematic diagram of the motor area structure of the utility model;

[0039] Figure 7 The utility model Figure 6 Schematic diagram of the structure enlarged at point A in the middle.

[0040] The symbols in the figure are:

[0041] 1. Pelletizer body; 2. Sealing cover; 3. Ventilation duct; 4. Air inlet duct; 5. Exhaust fan; 6. Filter; 7. Sliding plate; 8. Fixed plate; 9. Sliding groove; 10. Fixed column; 11. Limit block; 12. Spring; 13. Rack; 14. First gear; 15. Bevel gear one; 16. Motor; 17. Bevel gear two; 18. Power chamber. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0043] In the description of the present application, it should be noted that the terms used here are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. For ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The techniques, methods and equipment known to ordinary technicians in the relevant fields may not be discussed in detail, but in appropriate cases, the techniques, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0044] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0045] It should be noted that, in the description of the present application, the orientation or positional relationship indicated by terms such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise stated, these orientation words do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present application; the orientation words "inside and outside" refer to the inside and outside relative to the contour of each component itself.

[0046] It should be noted that, in the present application, the terms "comprise", "include" or any other variant 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, an element defined by the sentence "comprises one..." does not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be noted that the scope of the method and device in the embodiment of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0047] Embodiment 1:

[0048] See also Figure 1 - Figure 7 As shown, this embodiment provides a cooling device for improving the efficiency of a pelletizer, comprising:

[0049] A pelletizer body 1, a sealing cover 2 is fixedly installed on the top of the pelletizer body 1, a power chamber 18 is opened in the sealing cover 2, a fixing plate 8 is fixedly installed in the power chamber 18, a plurality of through holes are opened on the fixing plate 8, and two sliding plates 7 are slidably installed in the power chamber 18 and on the top of the fixing plate 8;

[0050] A driving assembly, which is located in the sealing cover 2 and is used to drive the two sliding plates 7 to slide;

[0051] The ventilation pipe 3 is fixedly installed on the top of the sealing cover 2 and is located directly above the power chamber 18. The ventilation pipe 3 is connected to the power chamber 18. An air inlet pipe 4 is fixedly installed on the top of the ventilation pipe 3. An exhaust fan 5 is fixedly installed at one end of the air inlet pipe 4. The air inlet pipe 4 is connected to the ventilation pipe 3. A filter screen 6 is installed on one side of the ventilation pipe 3 and directly below the air inlet pipe 4.

[0052] The fixing component is located in the ventilation pipe 3 and is used to fix the position of the filter screen 6.

[0053] Among them, when the equipment just starts to work, the exhaust fan 5 is started, and the exhaust fan 5 draws the outside wind from the air inlet pipe 4 into the ventilation pipe 3. Then the outside wind passes through the filter 6 and enters the top of the two sliding plates 7. The wind passes through the fixed plate 8 and enters the pelletizer body 1, which can cool the pelletizer body 1. When the pelletizer body 1 has been working for a long time, the power of the exhaust fan 5 is increased. At this time, the outside wind will quickly enter the top of the fixed plate 8. Through the set driving component, the two sliding plates 7 can be driven to slide and move away from each other. Then, all the through holes on the fixed plate 8 can be ventilated, so that the outside wind can quickly enter the pelletizer body 1 through the through holes, which can avoid the situation that the temperature in the pelletizer body 1 is too high and agglomerates. At the same time, the air intake speed and size can be adjusted according to the work progress;

[0054] The filter 6 can filter the outside wind to prevent the outside dirt from entering the pelletizer body 1. When the filter 6 needs to be replaced after a long period of use, the filter 6 can be pulled out through the drive assembly, and the fixing column 10 will be separated from the sliding groove 9, so that the filter 6 can be easily disassembled.

[0055] When it is necessary to install a new filter screen 6, the filter screen 6 is first inserted into the ventilation pipe 3. The position of the filter screen 6 can be fixed by the provided driving assembly, so that the new filter screen 6 can be installed conveniently.

[0056] In this embodiment, the driving component includes:

[0057] Two racks 13, the two racks 13 are fixedly mounted on one side of the two sliding plates 7, the racks 13 are slidably connected to the power chamber 18, two first gears 14 are rotatably mounted in the power chamber 18, and the two first gears 14 are respectively located on one side of the two racks 13, the two first gears 14 are respectively meshed with the two racks 13, and a bevel gear 15 is fixedly mounted on one end of the two first gears 14 close to each other;

[0058] Motor 16, motor 16 is fixedly mounted on one side of sealing cover 2, and motor 16 is located on one side of sliding plate 7, output shaft of motor 16 passes through sealing cover 2 and extends into power chamber 18 and is fixedly mounted with bevel gear 2 17, bevel gear 2 17 is rotationally connected with power chamber 18, bevel gear 2 17 is located between two bevel gears 15, and bevel gear 2 17 is meshed with bevel gear 1 15;

[0059] When the equipment starts to work, the exhaust fan 5 is started, and the exhaust fan 5 draws the outside wind from the air inlet pipe 4 into the ventilation pipe 3. Then the outside wind passes through the filter screen 6 and enters the top of the two sliding plates 7. The wind passes through the fixed plate 8 and enters the pelletizer body 1, which can cool the pelletizer body 1. When the pelletizer body 1 works for a long time, the power of the exhaust fan 5 is increased. At this time, the outside wind will quickly enter the top of the fixed plate 8, and the motor 16 is started at the same time. The motor 16 is powered on and drives the bevel gear 1 7 rotates, the bevel gear 2 17 drives the two bevel gears 15 meshing therewith to rotate oppositely, the two bevel gears 15 respectively drive the two first gears 14 to rotate oppositely, the two first gears 14 respectively drive the two racks 13 meshing therewith to slide and move away from each other, and then all the through holes on the fixed plate 8 can be ventilated, so that the outside wind can quickly enter the pelletizer body 1 through the through holes, which can avoid the situation that the temperature in the pelletizer body 1 is too high and agglomerates, and at the same time, the air intake speed and size can be adjusted according to the work progress.

[0060] In this embodiment, the fixing component includes:

[0061] A sliding groove 9 is provided in the ventilation pipe 3 and is located on one side of the filter screen 6. A fixed column 10 fixed to one side of the filter screen 6 is slidably installed in the sliding groove 9. A limit block 11 is slidably installed in the sliding groove 9 and on one side of the fixed column 10. A plurality of springs 12 fixed to the inner wall of the sliding groove 9 are fixedly installed on the top of the limit block 11. One side of the limit block 11 contacts the fixed column 10, and the other side of the limit block 11 passes through the sliding groove 9 and extends to the outside.

[0062] Among them, the filter screen 6 can filter the external wind to prevent the external dirt from entering the pelletizer body 1. When the filter screen 6 needs to be replaced after being used for a long time, the limit block 11 is first pulled upward, and the springs 12 are squeezed and contracted. When the limit block 11 slides to a suitable position, the filter screen 6 can be pulled outward, and the fixing column 10 will be detached from the sliding groove 9, which is convenient for disassembly of the filter screen 6.

[0063] When a new filter 6 needs to be installed, the filter 6 is first inserted into the ventilation pipe 3, and then the fixing column 10 will squeeze the inclined surface on the limit block 11, so that the limit block 11 slides upward, and at the same time, several springs 12 are squeezed and contracted. When the fixing column 10 slides to a suitable position, the limit block 11 is no longer squeezed. Under the action of the rebound force of several springs 12, the limit block 11 slides downward, and then the limit block 11 can fix the position of the fixing column 10, thereby further fixing the position of the filter 6, which is convenient for installing the new filter 6.

[0064] Embodiment 2:

[0065] This embodiment provides a cooling device for improving the efficiency of a pelletizer. In addition to the technical solutions of the above embodiments, it also has the following technical features.

[0066] In this embodiment, the side of the limiting block 11 away from the fixing column 10 is inclined.

[0067] The sliding of the fixing column 10 will squeeze the inclined surface on the limiting block 11, so that the limiting block 11 slides upward.

[0068] Embodiment 3:

[0069] This embodiment provides a cooling device for improving the efficiency of a pelletizer. In addition to the technical solutions of the above embodiments, it also has the following technical features.

[0070] In this embodiment, the output shaft of the motor 16 is rotatably connected to the sealing cover 2 and the power chamber 18 .

[0071] Here, it is ensured that the output shaft of the motor 16 can rotate in the sealing cover 2 and the power chamber 18 .

[0072] Embodiment 4:

[0073] This embodiment provides a cooling device for improving the efficiency of a pelletizer. In addition to the technical solutions of the above embodiments, it also has the following technical features.

[0074] In this embodiment, the width of the two sliding plates 7 is the same as the width of the fixed plate 8 .

[0075] Here, it is ensured that the sliding plate 7 can block the through hole on the fixing plate 8 .

[0076] Working principle: When the equipment starts working, the exhaust fan 5 is started, and the exhaust fan 5 draws the outside wind from the air inlet pipe 4 into the ventilation pipe 3. Then the outside wind passes through the filter screen 6 and enters the top of the two sliding plates 7. The wind passes through the fixed plate 8 and enters the pelletizer body 1, which can cool the pelletizer body 1. When the pelletizer body 1 has been working for a long time, the power of the exhaust fan 5 is increased. At this time, the outside wind will quickly enter the top of the fixed plate 8, and the motor 16 is started at the same time. The motor 16 is powered on and drives the bevel gear 2 17 rotates, the bevel gear 2 17 drives the two bevel gears 15 meshing therewith to rotate in the opposite direction, the two bevel gears 15 respectively drive the two first gears 14 to rotate in the opposite direction, and the two first gears 14 respectively drive the two racks 13 meshing therewith to slide and move away from each other, and then all the through holes on the fixing plate 8 can be ventilated, so that the outside wind can quickly enter the pelletizer body 1 through the through holes, which can avoid the situation that the temperature in the pelletizer body 1 is too high and agglomerates, and at the same time, the air intake speed and size can be adjusted according to the work progress;

[0077] The filter 6 can filter the outside wind to prevent the outside dirt from entering the pelletizer body 1. When the filter 6 needs to be replaced after long-term use, the limit block 11 is first pulled upward, and the springs 12 are squeezed and contracted. When the limit block 11 slides to a suitable position, the filter 6 can be pulled outward, and the fixing column 10 will be detached from the sliding groove 9, which is convenient for disassembly of the filter 6.

[0078] When a new filter 6 needs to be installed, the filter 6 is first inserted into the ventilation pipe 3, and then the fixing column 10 will squeeze the inclined surface on the limit block 11, so that the limit block 11 slides upward, and at the same time, several springs 12 are squeezed and contracted. When the fixing column 10 slides to a suitable position, the limit block 11 is no longer squeezed. Under the action of the rebound force of several springs 12, the limit block 11 slides downward, and then the limit block 11 can fix the position of the fixing column 10, thereby further fixing the position of the filter 6, which is convenient for installing the new filter 6.

[0079] The embodiments of the present application are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A cooling device for improving the efficiency of a pelletizer, characterized in that: include: A pelletizer body (1), a sealing cover (2) is fixedly installed on the top of the pelletizer body (1), a power chamber (18) is provided in the sealing cover (2), a fixing plate (8) is fixedly installed in the power chamber (18), a plurality of through holes are provided on the fixing plate (8), and two sliding plates (7) are slidably installed in the power chamber (18) and on the top of the fixing plate (8); A driving assembly, the driving assembly is located in the sealing cover (2) and is used to drive the two sliding plates (7) to slide; A ventilation pipe (3), the ventilation pipe (3) is fixedly mounted on the top of the sealing cover (2) and is located directly above the power chamber (18), the ventilation pipe (3) is in communication with the power chamber (18), an air inlet pipe (4) is fixedly mounted on the top of the ventilation pipe (3), an exhaust fan (5) is fixedly mounted on one end of the air inlet pipe (4), and the air inlet pipe (4) is in communication with the ventilation pipe (3), and a filter screen (6) is plugged and mounted on one side of the ventilation pipe (3) and located directly below the air inlet pipe (4); A fixing component is located in the ventilation pipe (3) and is used to fix the position of the filter screen (6).

2. A cooling device for improving the efficiency of a pelletizer according to claim 1, characterized in that: The drive assembly comprises: Two racks (13), the two racks (13) are respectively fixedly mounted on one side of the two sliding plates (7), the racks (13) are slidably connected to the power chamber (18), two first gears (14) are rotatably mounted in the power chamber (18), and the two first gears (14) are respectively located on one side of the two racks (13), the two first gears (14) are respectively meshed with the two racks (13), and a bevel gear (15) is fixedly mounted on the ends of the two first gears (14) close to each other; A motor (16), wherein the motor (16) is fixedly mounted on one side of the sealing cover (2), and the motor (16) is located on one side of the sliding plate (7), an output shaft of the motor (16) passes through the sealing cover (2) and extends into the power chamber (18) and is fixedly mounted with a second bevel gear (17), the second bevel gear (17) is rotatably connected to the power chamber (18), the second bevel gear (17) is located between two first bevel gears (15), and the second bevel gear (17) is meshed with the first bevel gear (15).

3. A cooling device for improving the efficiency of a pelletizer according to claim 2, characterized in that: The fixing assembly comprises: A sliding groove (9), wherein the sliding groove (9) is provided in the ventilation pipe (3) and is located on one side of the filter screen (6), a fixed column (10) fixed to one side of the filter screen (6) is slidably installed in the sliding groove (9), a limit block (11) is slidably installed in the sliding groove (9) and is located on one side of the fixed column (10), a plurality of springs (12) fixed to the inner wall of the sliding groove (9) are fixedly installed on the top of the limit block (11), one side of the limit block (11) is in contact with the fixed column (10), and the other side of the limit block (11) passes through the sliding groove (9) and extends to the outside.

4. A cooling device for improving the efficiency of a pelletizer according to claim 3, characterized in that: The side of the limiting block (11) away from the fixing column (10) is arranged in an inclined manner.

5. A cooling device for improving the efficiency of a pelletizer according to claim 2, characterized in that: The output shaft of the motor (16) is rotatably connected to the sealing cover (2) and the power chamber (18).

6. A cooling device for improving the efficiency of a pelletizer according to claim 1, characterized in that: The width of the two sliding plates (7) is the same as the width of the fixed plate (8).

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