Cooling device for polypropylene particle production

Abstract

The utility model relates to the technical field of polypropylene particle production, and discloses a cooling device for polypropylene particle production, which comprises a box body, a production bin and an air drying bin are arranged in the box body, a spraying device is arranged at the top end of the production bin, consists of a cooling water tank, a water pump and a water spraying pipe and is used for cooling polypropylene particles, and the particles are extruded into the production bin by a particle extruder. The first motor drives the cutting knife to cut, an inclined plate, a first water leakage net, a waste water tank, a first fan and a second fan are arranged in the air drying bin and used for blow-drying moisture on the surfaces of particles, and the water screening device is located on one side of the air drying bin and composed of a mounting plate, a protective shell, a second motor, a rotating column and a round pin. And the protection shell and the second water leakage net in the protection shell shake in a reciprocating mode, the water screening effect is enhanced, and the treatment efficiency and quality of polypropylene particles are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to polypropylene particle production technical field, concretely to a kind of cooling device for polypropylene particle production. BACKGROUND

[0002] Polypropylene is an important thermoplastic material, which has a wide range of applications in industrial production. In the production process of polypropylene particles, the cooling step is crucial, as it directly affects the quality and production efficiency of the product. However, existing cooling devices for polypropylene particle production still have many shortcomings in practical application. For example, a cooling forming device for polypropylene particle production is proposed in a Chinese patent with patent publication number CN202222162964.9. This device uses a feeding motor to drive the spiral blade to continuously feed the polypropylene particles. At the same time, it uses fan leaves to air-cool and heat-dissipate the polypropylene particles at the feeding tube. The device also uses an air inlet pipe to drive the mixing rod for stirring and heat-dissipating, to further improve the cooling effect and effectively prevent particle agglomeration and wall sticking. However, the above-mentioned patent can only cool the polypropylene particles to a certain extent, and there is still a lot of room for improvement in cooling efficiency and uniformity. The above-mentioned patent uses a ventilation hole to contact and dissipate heat from the polypropylene particles, which is inefficient and cannot meet the needs of large-scale and high-efficiency production, especially for polypropylene particles that are stacked and discharged. The bottom particles are difficult to cool effectively due to being covered by the particles above, resulting in poor cooling uniformity. In addition, the device lacks effective stirring and screening of the particles during the cooling process, resulting in large differences in cooling effect between particles, which further affects the product quality and production efficiency. To solve the above problems, we propose a cooling device for polypropylene particle production. SUMMARY

[0003] In view of the shortcomings of the prior art, the present utility model provides a cooling device for polypropylene particle production, which solves the above problems.

[0004] To achieve the above-mentioned purposes, the utility model provides the following technical scheme: a cooling device for polypropylene particle production, comprising a box body, a production bin is formed by hollowing out one side of the middle part of the box body, a spraying device is arranged at the top end of the box body, a particle extruder is fixedly installed on one side of the box body, one end of the particle extruder extends through the production bin of the box body to form a discharge port, an air-drying bin is arranged at the bottom end of the box body, and the production bin in the box body is communicated with the air-drying bin, and a water screening device is arranged on one side of the air-drying bin, further comprising:

[0005] The spraying device is composed of a cooling water tank, a water pump and a water spraying pipe, which can continuously and uniformly spray cooling water onto the polypropylene particles in the production bin, accelerating the cooling speed of the particles.

[0006] The air-drying bin is used for making the cut polypropylene particles fall on the first water leakage net through the inclined plate, and the cooling water attached to the surface of the particles falls into the bottom end of the waste water tank through the first water leakage net, and the second water leakage net is used for receiving the polypropylene particles blown by the first fan and further performing air-drying treatment.

[0007] The water screening device is driven by the second motor to make the second water leakage net reciprocate and shake, so that the polypropylene particles can be turned and dried more uniformly in the water screening process, and the overall processing efficiency and quality are improved.

[0008] Preferably, the spraying device comprises a cooling water tank, a water pump and a water spraying pipe, one side of the top end of the box body is fixedly provided with the cooling water tank, and the water pump is fixedly arranged on the side of the top end of the box body close to the cooling water tank, the water spraying pipe is fixedly arranged on the side of the top end of the production bin close to the water pump through the support, a plurality of groups of spraying heads are fixedly arranged on the bottom end of the water spraying pipe, and the cooling water tank, the water pump and the water spraying pipe are connected through water pipes.

[0009] Preferably, the first motor is fixedly arranged on the side of the box body away from the particle extruder, the output shaft of the first motor extends to the production bin in the box body, and the connecting rod is fixedly arranged on the side of the connecting rod close to the discharge port, and the cutting knife is fixedly arranged on the side of the connecting rod close to the discharge port.

[0010] Preferably, the air-drying bin comprises a water leakage tank, a waste water tank, a first fan, an inclined plate and a first water leakage net, the bottom end of the box body is fixedly provided with the water leakage tank, the bottom end of the water leakage tank is fixedly provided with the waste water tank, the inside of the water leakage tank is fixedly provided with the inclined plate on the side close to the box body, the inside of the water leakage tank is fixedly provided with the first water leakage net on the side close to the bottom end of the inclined plate, two groups of the first fans are fixedly arranged in the two groups of openings on the side of the water leakage tank close to the first water leakage net.

[0011] Preferably, the air-drying bin further comprises a second fan and a second water leakage net, the waste water tank is provided with a chute on the side close to the water leakage tank, and the waste water tank is provided with a rectangular opening on the side close to the chute, the second water leakage net is slidably arranged in the waste water tank, and the size of the second water leakage net is the same as that of the rectangular opening, a plurality of groups of the second fans are fixedly arranged on the bottom end of the inclined plate and face the side of the second water leakage net, and the water screening device is arranged on the side of the second water leakage net away from the waste water tank.

[0012] Preferably, the water screening device comprises a mounting plate, a protective shell and a second motor, one side of the second water leakage net is fixedly provided with the protective shell through a connecting block, a group of sliding blocks are fixedly installed on both sides of the bottom end of the protective shell, the bottom end of the protective shell is provided with the mounting plate, and sliding grooves are formed in the two sides of the mounting plate, the protective shell is slidably installed on the mounting plate through the two groups of sliding blocks, and the second motor is fixedly installed on the top end of the mounting plate, away from the second water leakage net.

[0013] Preferably, the water screening device further comprises a rotating column and a round pin, the inside of the protective shell is hollow, and the top end of the inside of the protective shell is fixedly provided with the round pin, the output shaft of the second motor is fixedly provided with the rotating column, the other end of the rotating column is rotatably provided with a rotating shaft, and the rotating shaft is fixedly installed on the top end of the mounting plate, and the surface of the rotating column is provided with an annular groove, and the round pin in the protective shell is slidably installed in the annular groove.

[0014] Compared with the prior art, the polypropylene particle production cooling device has the following beneficial effects:

[0015] 1、The polypropylene particle production cooling device, compared with the traditional technology such as the patent with the application number CN202222162964.9, has a significant improvement in cooling effect, although the traditional technology can contact the polypropylene particles through the ventilation holes to dissipate heat, the efficiency is low, and for the accumulated polypropylene particles, the bottom particles are difficult to be effectively cooled, and the device can continuously and uniformly spray cooling water on the polypropylene particles in the production bin through the setting of the spraying device, effectively accelerating the cooling speed of the particles and improving the uniformity of the cooling, the multiple design of the spray head ensures that the cooling water can fully cover the surface of the particles, avoiding the problem of local overheating or uneven cooling, thereby improving the production efficiency and product quality, in addition, through the subsequent screening and the multi-angle adjustment of the exhaust equipment body, the cooling effect is further enhanced, so that the device has obvious substantial progress in cooling efficiency and uniformity compared with the traditional technology. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 It is a three-dimensional sectional view of the utility model;

[0017] Fig. 2 It is a three-dimensional front view of the utility model;

[0018] Fig. 3 It is a water screening device schematic view of the utility model.

[0019] In the figure: 1, box; 2, particle extruder; 3, cooling water tank; 4, water screening device; 5, water leakage tank; 6, waste water tank; 7, water pump; 8, water spray pipe; 9, discharge port; 10, cutting knife; 11, first motor; 12, first fan; 13, inclined plate; 14, second fan; 15, first water leakage net; 16, second water leakage net; 17, mounting plate; 18, protective shell; 19, second motor; 20, rotating column; 21, round pin. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0021] Please refer to Figs. 1-3 A cooling device for polypropylene particle production, comprising a box 1, a production bin is formed by hollowing out one side of the middle part of the box 1, a spraying device is arranged at the top end of the box 1, a particle extruder 2 is fixedly installed on one side of the box 1, one end of the particle extruder 2 extends through the production bin of the box 1 to form a discharge port 9, a drying bin is arranged at the bottom end of the box 1, and the production bin in the box 1 is communicated with the drying bin, and one side of the drying bin is provided with a water screening device 4, and the cooling device further comprises:

[0022] The spraying device is composed of a cooling water tank 3, a water pump 7 and a water spray pipe 8, and can continuously and uniformly spray cooling water on the polypropylene particles in the production bin, so as to accelerate the cooling speed of the particles;

[0023] The drying bin is used for allowing the cut polypropylene particles to fall onto the first water leakage net 15 through the inclined plate 13, and the cooling water attached to the surface of the particles falls into the bottom end of the waste water tank 6 through the first water leakage net 15, and the second water leakage net 16 is used for receiving the polypropylene particles blown by the first fan 12 to further perform drying treatment;

[0024] The water screening device 4 is driven by the second motor 19 to reciprocatingly shake the second water leakage net 16, so that the polypropylene particles can be more uniformly turned and dried during the water screening process, and the overall processing efficiency and quality are improved.

[0025] Further, the spraying device comprises a cooling water tank 3, a water pump 7 and a water spraying pipe 8, the cooling water tank 3 is fixedly installed on one side of the top end of the box body 1, the water pump 7 is fixedly installed on the side of the top end of the box body 1 close to the cooling water tank 3, the water spraying pipe 8 is fixedly installed on the side of the top end of the production bin close to the water pump 7 through a support, a plurality of groups of spraying heads are fixedly installed at the bottom end of the water spraying pipe 8, and the cooling water tank 3, the water pump 7 and the water spraying pipe 8 are connected together through water pipes. Through the spraying device, the cooling water can be continuously and uniformly sprayed on the polypropylene particles in the production bin, the cooling speed of the particles is effectively accelerated, and the production efficiency is improved.

[0026] Further, the first motor 11 is fixedly installed on the side of the box body 1 away from the particle extruder 2, the output shaft of the first motor 11 extends through the box body 1 to the production bin, a connecting rod is fixedly installed, the cutting knife 10 is fixedly installed on the side of the connecting rod close to the discharge port 9, the cutting knife 10 is attached to the surface of the discharge port 9, and the first motor 11 drives the cutting knife 10 to cut the polypropylene particles extruded from the discharge port 9, thereby providing a basis for subsequent air drying and water screening treatment.

[0027] Further, the air drying bin comprises a water leakage tank 5, a waste water tank 6, a first air blower 12, an inclined plate 13 and a first water leakage net 15, the water leakage tank 5 is fixedly installed at the bottom end of the box body 1, the waste water tank 6 is fixedly installed at the bottom end of the water leakage tank 5, the inclined plate 13 is fixedly installed on the side of the inside of the water leakage tank 5 close to the box body 1, the first water leakage net 15 is fixedly installed on the side of the inside of the water leakage tank 5 close to the bottom end of the inclined plate 13, two groups of openings are arranged on the side of the water leakage tank 5 close to the first water leakage net 15, and one group of first air blowers 12 is fixedly installed in each of the two groups of openings, the cut polypropylene particles fall onto the first water leakage net 15 through the inclined plate 13, the cooling water attached to the surface of the particles falls into the bottom end of the waste water tank 6 through the first water leakage net 15, and meanwhile, the two groups of first air blowers 12 blow the polypropylene particles on the first water leakage net 15 through air force, which is helpful to the evaporation of the moisture on the surface of the particles.

[0028] Further, the air drying bin further comprises a second air blower 14 and a second water leakage net 16, a chute is arranged on the side of the waste water tank 6 close to the water leakage tank 5, a rectangular opening is arranged on the side of the waste water tank 6 close to the chute, the second water leakage net 16 is slidably installed in the inside of the waste water tank 6, the size of the second water leakage net 16 is the same as that of the rectangular opening, a plurality of groups of second air blowers 14 are fixedly installed at the bottom end of the inclined plate 13 and face the side of the second water leakage net 16, and the second water leakage net 16 slidably installed in the inside of the waste water tank 6 is used for receiving the polypropylene particles blown by the first air blower 12, the plurality of groups of second air blowers 14 fixedly installed at the bottom end of the inclined plate 13 all face the side of the second water leakage net 16, and the blowing action of the plurality of groups of second air blowers 14 further accelerates the drying speed of the polypropylene particles.

[0029] Further, the water screening device 4 comprises a mounting plate 17, a protective shell 18 and a second motor 19, one side of the second water leakage screen 16 is fixedly provided with the protective shell 18 through a connecting block, both sides of the bottom end of the protective shell 18 are fixedly provided with a group of sliding blocks, the bottom end of the protective shell 18 is provided with the mounting plate 17, and both sides of the mounting plate 17 are provided with sliding grooves, the protective shell 18 is slidably installed on the mounting plate 17 through the two groups of sliding blocks, the top end of the mounting plate 17 is fixedly provided with the second motor 19 away from the side of the second water leakage screen 16, and the combination of the mounting plate 17, the protective shell 18 and the second motor 19 provides a power source for the water screening treatment of the polypropylene particles, and the second motor 19 provides a power basis for the subsequent reciprocating shaking of the water screening treatment.

[0030] Further, the water screening device 4 further comprises a rotating column 20 and a round pin 21, the inside of the protective shell 18 is hollowed out, and the top end of the inside of the protective shell 18 is fixedly provided with the round pin 21, the output shaft of the second motor 19 is fixedly provided with the rotating column 20, the other end of the rotating column 20 is rotatably provided with a rotating shaft, and the rotating shaft is fixedly installed on the top end of the mounting plate 17, the surface of the rotating column 20 is provided with an annular groove, and the round pin 21 in the protective shell 18 is slidably installed in the annular groove, the second motor 19 drives the rotating column 20 to rotate, and the annular groove on the surface of the rotating column 20 is slidably matched with the round pin 21 in the protective shell 18, so that the protective shell 18 reciprocating shakes in the rotating process of the rotating column 20, thereby enhancing the water screening effect, and making the polypropylene particles be more uniformly turned and dried in the water screening process, and improving the overall processing efficiency and quality.

[0031] Structural description: 1, box body 1: as the main structure of the whole device, the middle part is hollowed out on one side to form a production bin for the production of polypropylene particles and the like, a spraying device is arranged at the top end, a particle extruder 2 is installed on one side, and a drying bin is arranged at the bottom end, the production bin is communicated with the drying bin, and the drying bin is provided with a water screening device 4 at one side; the position relationship is: it is the basic structure of the device, and other components are installed on the box body 1 or cooperated with the box body 1 at a related position; the principle is: to provide installation and working space for each component, and to realize the flow processing of polypropylene particle production, cooling, drying and water screening through the arrangement of different bins.

[0032] 2, particle extruder 2: one end extends through the production bin of the box body 1 to form a discharge port 9, used for extruding polypropylene particles; position relationship: fixedly installed on one side of the box body 1; principle: the polypropylene raw material is extruded into particles through the internal structure, and then output to the production bin through the discharge port.

[0033] 3, cooling water tank 3: store cooling water to provide water source for water spraying; position relationship: fixedly installed on one side of the top end of the box body 1; principle: store cooling water in the water tank, and use the water pump to pump out the water and deliver it to the water spraying pipe for spraying.

[0034] 4, water pump 7: the cooling water in the cooling water tank 3 is pumped out and delivered to the water spray pipe 8 position relationship: fixedly installed on the top of the box 1 near the cooling water tank 3 on one side principle: use the power of water pump to pump out the water in the tank, through the water pipe to the water spray pipe, realize the delivery of cooling water.

[0035] 5, water spray pipe 8: the bottom is fixedly installed with multiple groups of spray heads, which is used for uniformly spraying cooling water on the polypropylene particles in the production bin position relationship: fixedly installed on the top of the production bin near the water pump 7 on one side principle: through the water pump to deliver the cooling water to the water spray pipe, and then uniformly spray the water on the particles by the spray head, accelerate the cooling speed of the particles.

[0036] 6, the first motor 11: drive the cutting knife 10 to cut the polypropylene particles extruded from the discharge port 9 position relationship: fixedly installed on the side of the box 1 away from the particle extruder 2, the output shaft extends through the box 1 to the production bin principle: the first motor rotates to drive the output shaft, and then drives the connecting rod and the cutting knife to rotate, cutting the extruded particles.

[0037] 7, cutting knife 10: the surface of the discharge port 9 is attached to the surface of the discharge port 9, which is used for cutting the polypropylene particles extruded from the discharge port 9 position relationship: installed on the output shaft of the first motor 11 through the connecting rod, near the discharge port 9 in the production bin principle: under the drive of the first motor, the cutting knife rotates to cut the particles extruded from the discharge port.

[0038] 8, water leakage tank 5: receiving the cut polypropylene particles, and making the cooling water attached to the surface of the particles fall into the waste water tank through the first water leakage net position relationship: fixedly installed at the bottom of the box 1 principle: through the box structure to accept particles and water, using the first water leakage net to realize the preliminary separation of water and particles.

[0039] 9, waste water tank 6: collecting the cooling water falling through the first water leakage net 15 position relationship: fixedly installed at the bottom of the water leakage tank 5 principle: as a storage container, collecting the separated cooling water.

[0040] 10, the first fan 12: through the wind force to blow the polypropylene particles on the first water leakage net 15, which is helpful to the evaporation of water on the surface of the particles position relationship: two groups of openings are provided on the side of the water leakage tank 5 near the first water leakage net 15, and a group of first fans 12 is fixedly installed in each opening principle: use the wind power generated by the fan to blow the particles, accelerate the evaporation of water.

[0041] 11, the inclined plate 13: makes the cut polypropylene particles fall onto the first water leakage net 15 through the inclined plate position relationship: fixedly installed on the inside of the water leakage tank 5 near the box 1 principle: use the inclined structure of the inclined plate to make the particles slide to the first water leakage net by gravity.

[0042] 12、First water leakage net 15: used for making the cooling water attached to the surface of the particles fall into the bottom end of the wastewater tank 6 through the mesh, while bearing the positional relationship of the polypropylene particles: fixedly installed inside the water leakage tank 5 near the bottom end of the inclined plate 13 on one side Principle: The separation of water and particles is realized through the mesh structure, and the particles are borne.

[0043] 13、Second fan 14: further accelerates the drying speed of the polypropylene particles Position relationship: A plurality of second fans 14 are fixedly installed at the bottom end of the inclined plate 13, and all face one side of the second water leakage net 16 Principle: The particles are further dried by the wind power generated by the fan.

[0044] 14、Second water leakage net 16: used for receiving the polypropylene particles blown by the first fan 12 and further performing air drying treatment Position relationship: A chute is formed on one side of the wastewater tank 6 close to the water leakage tank 5, and a rectangular opening is arranged on one side of the wastewater tank 6 close to the chute, and the second water leakage net 16 is slidingly installed inside the wastewater tank 6 Principle: The particles are borne by the mesh structure for further air drying treatment.

[0045] 15、Mounting plate 17: provides a mounting basis for the protective shell 18 and the second motor 19 Position relationship: Located on one side of the second water leakage net 16, the protective shell 18 is slidingly installed on the mounting plate 17 through the sliding block, and the second motor 19 is fixedly installed on the top end of the mounting plate 17 away from the second water leakage net 16 Principle: As a mounting component, it provides a mounting position for other components.

[0046] 16、Protective shell 18: connected with the second water leakage net 16, reciprocatingly shakes under the driving of the second motor 19 to enhance the water screening effect Position relationship: The protective shell 18 is fixedly installed on one side of the second water leakage net 16 through the connecting block, and the protective shell 18 is slidingly installed on the mounting plate 17 through the two groups of sliding blocks Principle: Under the driving of the second motor, reciprocating shaking is generated through cooperation with the rotating column to realize water screening and turning of the particles.

[0047] 17、Second motor 19: drives the rotating column 20 to rotate to provide power for the reciprocating shaking of the protective shell 18 Position relationship: Fixedly installed on the top end of the mounting plate 17 away from the second water leakage net 16 Principle: The motor rotates to drive the output shaft, and then drives the rotating column to rotate, and the reciprocating shaking of the protective shell is realized through the cooperation of the rotating column and the protective shell.

[0048] 18, rotating column 20: under the drive of the second motor 19, rotating through the annular slot on the surface and the sliding fit with the round pin 21 in the protective shell 18, making the protective shell 18 reciprocating shaking position relationship: the output shaft of the second motor 19 is fixedly installed with the rotating column 20, and the other end of the rotating column 20 is rotatably installed with the rotating shaft, and the rotating shaft is fixedly installed at the top end of the mounting plate 17: the rotating column rotates under the drive of the motor, and the annular slot and the sliding fit with the round pin convert the rotary motion into the reciprocating shaking of the protective shell.

[0049] 19, round pin 21: slidingly installed in the annular slot on the surface of the rotating column 20, cooperating with the rotating column 20 to make the protective shell 18 reciprocating shaking position relationship: fixedly installed at the top end inside the protective shell 18: through cooperation with the annular slot of the rotating column, the rotating column makes the protective shell reciprocating shaking when rotating.

[0050] Usage

[0051] Firstly, the polypropylene particles are extruded through the particle extruder 2 and enter the production bin in the box 1, and at the top end of the production bin, the spraying device composed of the cooling water tank 3, the water pump 7 and the water spraying pipe 8 continuously and uniformly sprays the cooling water on the polypropylene particles to accelerate the cooling speed of the particles, then the cooled polypropylene particles are cut into appropriate sizes by the cutting knife 10 driven by the first motor 11, providing a basis for subsequent air drying and water screening treatment, then the cut polypropylene particles fall on the first water leakage net 15 in the air drying bin through the inclined plate 13, and the cooling water adhered to the surface of the particles falls into the bottom end of the waste water tank 6 through the first water leakage net 15, at the same time, the first fan 12 blows the polypropylene particles on the first water leakage net 15 through the air force, which helps the water on the surface of the particles to evaporate, then the particles are further blown to the second water leakage net 16, and the second fan 14 continues to air dry the particles to accelerate the drying speed, finally, the water screening device 4 drives the rotating column 20 to rotate through the second motor 19, and the annular slot on the surface of the rotating column 20 and the round pin 21 in the protective shell 18 are in sliding fit, so that the second water leakage net 16 reciprocating shakes in the rotating process of the rotating column 20, and the shaking enhances the water screening effect, so that the polypropylene particles can be turned and dried more uniformly in the water screening process, improving the overall processing efficiency and quality, and finally, the processed polypropylene particles can be taken out from the water screening device 4 or further conveyed to the next production link.

[0052] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and modifications can be made to these embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A cooling device for polypropylene particle production, comprising a box (1), the middle part of the box (1) is hollowed out to form a production bin, the top end of the box (1) is provided with a spraying device, one side of the box (1) is fixedly installed with a particle extruder (2), one end of the particle extruder (2) extends through to the production bin of the box (1) to form a discharge port (9), the bottom end of the box (1) is provided with a air-drying bin, and the production bin in the box (1) is communicated with the air-drying bin, and one side of the air-drying bin is provided with a water screening device (4), characterized in that, Also include: The spray device is composed of a cooling water tank (3), a water pump (7) and a water spray pipe (8), which can continuously and uniformly spray cooling water on the polypropylene particles in the production bin, and accelerate the cooling speed of the particles; The air-drying bin is used for making the cut polypropylene particles fall onto the first water leakage net (15) through the inclined plate (13), the cooling water adhered to the surface of the particles falls into the bottom end of the waste water tank (6) through the first water leakage net (15), and the second water leakage net (16) is used for receiving the polypropylene particles blown by the first fan (12) and further performing air-drying treatment; The water screening device (4) is driven by the second motor (19) to make the second water leakage net (16) reciprocate and shake, so that the polypropylene particles can be more uniformly turned and dried during the water screening process, and the overall processing efficiency and quality are improved.

2. The cooling device for polypropylene particle production according to claim 1, characterized in that: The spray device includes a cooling water tank (3), a water pump (7) and a water spray pipe (8), one side of the top end of the box body (1) is fixedly installed with the cooling water tank (3), and the top end of the box body (1) is fixedly installed with the water pump (7) on the side close to the cooling water tank (3), the top end of the production bin is fixedly installed with the water spray pipe (8) on the side close to the water pump (7) through the support, and the bottom end of the water spray pipe (8) is fixedly installed with a plurality of spray heads, and the cooling water tank (3), the water pump (7) and the water spray pipe (8) are connected together through water pipes.

3. The cooling device for polypropylene particle production according to claim 1, characterized in that: The first motor (11) is fixedly installed on the side of the box body (1) away from the particle extruder (2), the output shaft of the first motor (11) extends through the box body (1) to the production bin, and the connecting rod is fixedly installed, the connecting rod is fixedly installed with the cutting knife (10) on the side close to the discharge port (9), and the cutting knife (10) is attached to the surface of the discharge port (9).

4. The cooling device for polypropylene particle production according to claim 1, characterized in that: The air-drying bin includes a water leakage tank (5), a waste water tank (6), a first fan (12), an inclined plate (13) and a first water leakage net (15), the bottom end of the box body (1) is fixedly installed with the water leakage tank (5), the bottom end of the water leakage tank (5) is fixedly installed with the waste water tank (6), the inside of the water leakage tank (5) is fixedly installed with the inclined plate (13) on the side close to the box body (1), the inside of the water leakage tank (5) is fixedly installed with the first water leakage net (15) on the side close to the bottom end of the inclined plate (13), and the side of the water leakage tank (5) close to the first water leakage net (15) is provided with two groups of openings, and one group of first fans (12) is fixedly installed in each of the two groups of openings.

5. The cooling device for polypropylene particle production according to claim 4, characterized in that: The air-drying bin further includes a second fan (14) and a second water leakage net (16), the waste water tank (6) is provided with a chute on the side close to the water leakage tank (5), and the waste water tank (6) is provided with a rectangular opening on the side close to the chute, the second water leakage net (16) is slidably installed in the inside of the waste water tank (6), and the size of the second water leakage net (16) is the same as that of the rectangular opening, a plurality of second fans (14) are fixedly installed on the bottom end of the inclined plate (13) and face the side of the second water leakage net (16), and the water screening device (4) is arranged on the side of the second water leakage net (16) away from the waste water tank (6).

6. The cooling device for polypropylene particle production according to claim 5, characterized in that: The water screening device (4) comprises a mounting plate (17), a protective shell (18) and a second motor (19), one side of the second water leakage net (16) is fixedly provided with the protective shell (18) through a connecting block, both sides of the bottom end of the protective shell (18) are fixedly provided with a group of sliding blocks, the bottom end of the protective shell (18) is provided with the mounting plate (17), both sides of the mounting plate (17) are provided with sliding grooves, the protective shell (18) is slidingly installed on the mounting plate (17) through the two groups of sliding blocks, and the top end of the mounting plate (17) is fixedly provided with the second motor (19) on the side away from the second water leakage net (16).

7. The cooling device for polypropylene particle production according to claim 6, characterized in that: The water screening device (4) further comprises a rotating column (20) and a round pin (21), the protective shell (18) is hollowed in the inside, the top end of the inside of the protective shell (18) is fixedly provided with the round pin (21), the output shaft of the second motor (19) is fixedly provided with the rotating column (20), the other end of the rotating column (20) is rotatably provided with a rotating shaft, and the rotating shaft is fixedly installed on the top end of the mounting plate (17), and the surface of the rotating column (20) is provided with an annular groove, and the round pin (21) in the protective shell (18) is slidingly installed in the annular groove.

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