Polypropylene production equipment and production process thereof

Abstract

The invention belongs to the technical field of polypropylene production equipment and tools, and specifically relates to polypropylene production equipment and a production process thereof, comprising a water tank, a cooling table fan, an air outlet hood, a wire material, a reduction motor, an air outlet hood, an inclined plate and a shaking device; the wire material adheres to the upper surface of a fourth roller, passes through it, adheres to the lower surface of a third roller and flows out, and the shaking device is driven by the cooperation of the reduction motor, the second roller and a cam, and the wire material between the third roller and the fourth roller is driven by the shaking device to repeatedly move up and down. In the process of moving up and down, the wire material can effectively shake off water droplets adhering to the surface of the wire material onto the inclined surface of the inclined plate, and the shaking device cooperates with the fan and the air outlet hood to effectively improve the air drying effect of the wire material and simultaneously improve the air drying efficiency of the wire material. At the same time, according to the inertia of water flowing to a lower place, the water droplets dripping on the inclined surface of the inclined plate slide along the inclined surface of the inclined plate to the inside of the water tank for recycling, thereby effectively reducing the waste of water sources inside the water tank.

Description

Technical Field

[0001] The invention belongs to the technical field of polypropylene production equipment and tools, in particular to a polypropylene production equipment and a production process thereof. Background Art

[0002] Polypropylene particles are also called PP particles. PP particles are mainly made of polypropylene and are mainly divided into three categories: homopolymer, copolymer and random copolymer. PP particles have many properties such as good heat resistance, flexural resistance, chemical stability, wear resistance, high strength, etc. They are currently mainly used in automobiles, medical, films, packaging, and plastic woven products.

[0003] During the production process, PP particles need to be extruded into strands using an extruder, and then the extruded strands are cooled and solidified using cooling equipment. Currently, most manufacturers use a circulating water tank to cool the strands. The extruded strands flow into the circulating water tank so that the strands are fully in contact with the water in the circulating water tank and cooled and solidified. Then, the cooled and solidified strands are dried with a fan to remove water droplets on the surface of the strands. During the drying process of the strands, multiple fans are usually installed below and above the strands to blow against each other to remove the residual moisture on the surface of the strands. Although this method can remove the residual moisture on the surface of the strands, it requires multiple fans during use. The power consumed by multiple fans during use increases exponentially, resulting in high power consumption and increased production costs. At the same time, during the drying process of the strands, water droplets adhering to the surface of the strands are blown to the outside of the strands by the wind of the fan and drip onto the ground, causing a waste of water resources.

[0004] In view of this, a polypropylene production equipment and a production process thereof are needed to solve the above problems. Summary of the invention

[0005] In order to make up for the shortcomings of the prior art and solve the problems that the solidified strands consume high power and have low drying efficiency during the air-drying process, and that the water droplets adhering to the surface of the strands cannot be recycled, the present invention proposes a polypropylene production device and a production process thereof.

[0006] The technical solution adopted by the present invention to solve the technical problem is as follows: the polypropylene production equipment described in the present invention comprises a water tank, a cooling table, a fan, an air outlet hood and a strand, the water tank and the bottom of the cooling table are both fixedly connected with uniformly arranged support frames, the strand is located inside the water tank, the fan is located directly below the cooling table, the cooling table is rotatably connected with uniformly arranged No. 1 rollers inside, two adjacent No. 1 rollers are rotatably connected via a No. 1 belt, the fan is connected to the air outlet hood via an air inlet pipe, and the air outlet hood is located directly above the cooling table;

[0007] The cooling table further comprises: an inclined plate, the water tank and the cooling table are fixedly connected by the inclined plate, a No. 2 roller is rotatably connected to the bottom of the inclined plate, the No. 2 roller runs through the inclined plate, and the inclined plate is used to make the water adhering to the surface of the strand drop on the surface of the inclined plate and slide into the water tank;

[0008] A third roller, the third roller being rotatably connected between the side walls at both ends of the upper surface of the inclined plate, and the height of the third roller being greater than the height of the first roller;

[0009] A fourth roller, the fourth roller is rotatably connected between the side walls at both ends of the upper surface of the inclined plate, the fourth roller is located at the front end of the third roller, and the height of the fourth roller is less than the height of the first roller;

[0010] A reduction motor, wherein the rotating shaft of the reduction motor is fixedly connected to the end of the No. 2 roller, a symmetrically designed cam is fixedly connected to the surface of the No. 2 roller, and the No. 2 roller is rotationally connected to the No. 1 roller via a No. 2 belt;

[0011] A shaking device is located between the third roller and the fourth roller, and is used to reduce the adhesion of moisture to the surface of the wire material.

[0012] Preferably, the shaking device comprises: a slide groove, the slide groove is opened on the side walls at both ends of the inclined surface of the inclined plate, a sliding plate is slidably connected inside the slide groove, and the surface of the sliding plate is opened with evenly arranged circular holes;

[0013] A support plate, the support plate is designed with a symmetrical structure and is respectively fixedly connected to the left and right side walls of the inclined plate, a connecting hole is opened in the middle of the upper surface of the support plate, a support rod is slidably connected inside the connecting hole, the top of the support rod is fixedly connected to the sliding plate, and the bottom of the support rod is fixedly connected to a circular plate;

[0014] A card plate, the card plate is designed to match the side walls at both ends of the inclined plate, the card plate is connected to the side walls at both ends of the slide groove, and the middle of the card plate is fixedly connected with evenly arranged round rods, and the round rods are designed to match the round holes;

[0015] A spring, wherein the spring is sleeved on the bottom surface of the support rod and is located above the circular plate;

[0016] A wiper is installed on the upper surface of the inclined plate and is used to scrape off water drops adhering to the surface of the wire material.

[0017] Preferably, the wiper element comprises: a rectangular groove, the rectangular groove is formed on the side walls at both ends of the inclined plate, a horizontal plate is slidably connected inside the rectangular groove, and a clamping groove is formed in the middle of the horizontal plate;

[0018] The scraper is designed in a "T"-shaped structure and is clamped in the slot. The top of the scraper contacts the wire material. The scraper is used to scrape off water drops adhering to the surface of the wire material.

[0019] Preferably, the scraper is made of elastic and wear-resistant rubber material.

[0020] Preferably, a wind shield is slidably connected to the bottom end of the air outlet hood, and handles are fixedly connected to the side walls at the front and rear ends of the wind shield. The wind shield is used to improve the utilization rate of the air flowing out along the air outlet hood.

[0021] Preferably, the surfaces of the inclined plate, the third roller and the fourth roller are all coated with PTFE coating.

[0022] Preferably, a water absorbing layer is fixedly connected to the surface of the No. 1 roller, and the water absorbing layer is used to absorb water droplets adhering to the surface of the wire material.

[0023] Preferably, the water absorbing layer is made of wear-resistant sponge material.

[0024] Preferably, a separation plate is fixedly connected to the rear end of the cooling stage, and the separation plate is designed in a comb-tooth structure, and the separation plate is used to reduce the probability of the wire materials adhering together.

[0025] A polypropylene production device and a production process thereof, wherein the polypropylene production device and the production process thereof are applicable to the polypropylene production device described in any one of claims 1 to 9, and the polypropylene production device and the production process thereof; comprise the following steps:

[0026] S1. The recovered masterbatch is cleaned, and the severely dyed masterbatch needs to be decolorized with caustic soda, and then the masterbatch is dried using a boiling dryer, a vacuum drying hopper or a vacuum dryer to remove the residual moisture in the masterbatch, and the dried masterbatch is put into a mixer or a kneader for mixing and kneading, and then the kneaded masterbatch is put into an extruder to extrude the strands into the water tank, and is cooled by contact with the water in the water tank;

[0027] S2. The wire material is solidified and formed after being cooled by the water in the water tank. At this time, since the wire material is in full contact with the water in the water tank, some water droplets will remain on the surface of the wire material. The cooled wire material flows out along the rear end of the water tank to the upper side of the inclined surface of the inclined plate. In order to reduce the water droplets adhering to the surface of the wire material, the second roller and the cam are driven to rotate by the reduction motor. During the rotation, the cam contacts the circular plate and forces the circular plate, the support rod, the sliding plate and the wire material between the third roller and the fourth roller to move upward. When the cam rotates and intersects with the circular plate, the sliding plate, the support rod and the circular plate move downward under the action of their own gravity and the elastic force of the spring. Without the support of the sliding plate, the wire material will also move downward under the action of its own gravity. With such repeated movements, the wire material can effectively shake off the water droplets adhering to the surface of the wire material onto the inclined surface of the inclined plate and slide into the water tank during the ups and downs process.

[0028] S3. Since a scraper is installed on the inclined surface of the inclined plate between the No. 1 roller and the No. 3 roller, the scraper fits the bottom surface of the wire material, so that the scraper can effectively scrape off the water droplets remaining at the bottom of the wire material, further reducing the probability of water droplets adhering to the surface of the wire material;

[0029] S4. The strands with water droplets scraped off by the scraper flow into the top of the cooling table. The wind generated by the fan flows into the air outlet hood through the air inlet pipe. The air outlet direction of the air outlet hood is aimed at the strands on the upper surface of the No. 1 roller and the moisture adhering to the surface of the strands is blown dry. By fixing a water-absorbing layer on the surface of the No. 1 roller, during the contact between the strands and the water-absorbing layer on the outer surface of the No. 1 roller, the water-absorbing layer can absorb the water droplets adhering to the outer surface of the strands into the water-absorbing layer. In combination with the air outlet hood, the drying efficiency of the strands can be effectively improved. The strands after air drying enter the granulator, where they are cut according to the set size to complete the granulation.

[0030] The beneficial effects of the present invention are as follows:

[0031] 1. The polypropylene production equipment and production process described in the present invention are provided with a water tank, a cooling table fan, an air outlet cover, a wire material, a reduction motor, an air outlet cover, an inclined plate and a shaking device; the wire material adheres to the upper surface of the fourth roller, passes through it and adheres to the lower surface of the third roller and flows out, and the wire material after flowing out adheres to the upper surface of the first roller and flows into the top of the cooling table, and the shaking device is driven by the reduction motor, the second roller and the cam, and the shaking device is used to drive the wire material between the third roller and the fourth roller to move up and down repeatedly. In the process of moving up and down, the wire material can effectively shake off the water droplets adhered to the surface of the wire material onto the inclined surface of the inclined plate, and the shaking device is used in conjunction with the fan and the air outlet cover to effectively improve the air drying effect of the wire material, reduce the air drying time of the wire material, and simultaneously improve the air drying efficiency of the wire material. At the same time, according to the inertia of water flowing to a lower place, the water droplets dripping on the inclined surface of the inclined plate slide along the inclined surface of the inclined plate to the inside of the water tank for recycling, thereby effectively reducing the waste of water source inside the water tank.

[0032] 2. The polypropylene production equipment and production process described in the present invention are characterized by arranging a No. 1 roller and a water-absorbing layer; during the contact between the strand and the water-absorbing layer on the outer surface of the No. 1 roller, the water-absorbing layer can absorb the water droplets adhering to the outer surface of the strand into the inner part of the water-absorbing layer, and cooperate with the air outlet hood to effectively improve the air-drying efficiency of the strand. Since the water-absorbing layer is fixedly connected to the outer surface of the No. 1 roller, the No. 1 roller synchronously drives the water-absorbing layer to rotate during the rotation process, thereby effectively preventing a certain part of the water-absorbing layer from contacting the strand for a long time and absorbing moisture from the surface of the strand. At the same time, the wind flowing out from the inside of the air outlet hood blows toward the strand and the water-absorbing layer, and the moisture absorbed by the inside of the water-absorbing layer will be quickly dried by the wind, so that the water-absorbing layer can continue to absorb moisture from the surface of the strand for a long time. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The present invention will be further described below in conjunction with the accompanying drawings.

[0034] Figure 1 It is a schematic diagram of the structure of the present invention;

[0035] Figure 2 is a cross-sectional view of the present invention;

[0036] Figure 3 yes Figure 2 A partial enlarged view of the middle part;

[0037] Figure 4 yes Figure 2 A partial enlarged view of point B in the middle;

[0038] In the figure: 1. water tank; 11. support frame; 12. wire material; 2. inclined plate; 21. No. 2 roller; 211. cam; 212. reduction motor; 213. No. 2 belt; 22. support plate; 221. connecting hole; 23. support rod; 24. round plate; 25. slide groove; 251. clamping plate; 252. round rod; 253. sliding plate; 254. round hole; 26. rectangular groove; 261. horizontal plate; 262. clamping groove; 263. scraper; 27. No. 3 roller; 28. No. 4 roller; 29. ​​spring; 3. fan; 31. air inlet pipe; 32. air outlet cover; 33. wind shield; 34. No. 1 roller; 341. water absorption layer; 35. No. 1 belt; 36. cooling table; 37. separation plate; DETAILED DESCRIPTION

[0039] In order to better understand the above technical solution, the above technical solution is described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0040] like Figures 1 to 4As shown, a polypropylene production device described in the present invention comprises a water tank 1, a cooling table 36, a fan 3, an air outlet hood 32 and a strand 12, wherein the water tank 1 and the bottom of the cooling table 36 are both fixedly connected with uniformly arranged support frames 11, the strand 12 is located inside the water tank 1, the fan 3 is located directly below the cooling table 36, and the cooling table 36 is rotatably connected with uniformly arranged No. 1 rollers 34 inside, and two adjacent No. 1 rollers 34 are rotatably connected via a No. 1 belt 35, the fan 3 is connected to the air outlet hood 32 via an air inlet pipe 31, and the air outlet hood 32 is located directly above the cooling table 36;

[0041] The cooling platform 36 further includes: an inclined plate 2, the water tank 1 and the cooling platform 36 are fixedly connected by the inclined plate 2, the bottom of the inclined plate 2 is rotatably connected to a second roller 21, the second roller 21 is designed to penetrate the inclined plate 2, and the inclined plate 2 is used to drop the water adhering to the surface of the wire material 12 on the surface of the inclined plate 2 and slide into the water tank 1;

[0042] A third roller 27, the third roller 27 is rotatably connected between the left and right side walls of the upper surface of the inclined plate 2, and the height of the third roller 27 is greater than the height of the first roller 34;

[0043] A fourth roller 28, the fourth roller 28 is rotatably connected between the left and right side walls of the upper surface of the inclined plate 2, the fourth roller 28 is located at the front end of the third roller 27, and the height of the fourth roller 28 is less than the height of the first roller 34;

[0044] A reduction motor 212, the rotation shaft of which is fixedly connected to the end of the No. 2 roller 21, a symmetrically designed cam 211 is fixedly connected to the surface of the No. 2 roller 21, and the No. 2 roller 21 is rotationally connected to the No. 1 roller 34 via a No. 2 belt 213;

[0045] A shaking device, the shaking device is located between the third roller 27 and the fourth roller 28, and the shaking device is used to reduce the adhesion of moisture to the surface of the wire material 12;

[0046] During operation, water is placed inside the water tank 1, and the strand 12 extruded by the extruder flows from the front end of the water tank 1 into the water tank 1, contacts the water, and is cooled and solidified. The granulator has an intermittent traction force on the strand 12 during the process of cutting the strand 12, forcing the strand 12 cooled inside the water tank 1 to flow out along the rear end of the water tank 1 to the upper surface of the inclined plate 2, and then the strand 12 adheres to the upper surface of the fourth roller 28 and passes through and adheres to the lower surface of the third roller 27 to flow out. The strand 12 after flowing out adheres to the upper surface of the first roller 34 and flows to the top of the cooling table 36, and the wind generated by the fan 3 passes through The air inlet pipe 31 flows into the inside of the air outlet cover 32. The air outlet direction of the air outlet cover 32 is aimed at the strand 12 on the upper surface of the No. 1 roller 34 and the moisture adhering to the surface of the strand 12 is blown dry. The dried strand 12 follows the traction force and enters the inside of the granulator for cutting. In order to prevent the strand 12 from contacting and rubbing with a certain surface of the No. 1 roller 34 for a long time, a reduction motor 212 is fixedly connected to the end of the No. 2 roller 21. The reduction motor 212 is started, and the rotating shaft of the reduction motor 212 starts to rotate slowly. The rotating shaft of the reduction motor 212 passes through the No. 2 belt 213 during the rotation process. The first roller 34 is driven to rotate slowly, so that the second roller 21 on the upper surface of the cooling table 36 can rotate, thereby effectively preventing the wire material 12 from contacting and rubbing with a certain surface of the first roller 34 for a long time, thereby reducing the wear of the first roller 34 by the wire material 12, and simultaneously extending the service life of the first roller 34. At the same time, the reduction motor 212 drives the second roller 21 and the cam 211 to rotate slowly during the slow rotation process, and the shaking device is driven by the cooperation of the reduction motor 212, the second roller 21 and the cam 211, and the shaking device drives the third roller 27 The wire material 12 between the No. 4 roller 28 moves up and down repeatedly. In the process of moving up and down, the wire material 12 can effectively shake off the water drops adhering to the surface of the wire material 12 onto the inclined surface of the inclined plate 2. The shaking device cooperates with the fan 3 and the air outlet hood 32 to effectively improve the air-drying effect of the wire material 12, reduce the air-drying time of the wire material 12, and simultaneously improve the air-drying efficiency of the wire material 12. At the same time, according to the inertia of water flowing to lower places, the water drops dripping on the inclined surface of the inclined plate 2 slide along the inclined surface of the inclined plate 2 to the inside of the water tank 1 for recycling, thereby effectively reducing the waste of water resources inside the water tank 1.

[0047] As an embodiment of the present invention, the shaking device includes: a slide groove 25, the slide groove 25 is opened on the side walls at both ends of the inclined surface of the inclined plate 2, a sliding plate 253 is slidably connected inside the slide groove 25, and the surface of the sliding plate 253 is provided with evenly arranged circular holes 254;

[0048] A support plate 22, the support plate 22 is symmetrically designed and is respectively fixed to the left and right side walls of the inclined plate 2, a connecting hole 221 is opened in the middle of the upper surface of the support plate 22, a support rod 23 is slidably connected inside the connecting hole 221, the top of the support rod 23 is fixedly connected to the sliding plate 253, and the bottom of the support rod 23 is fixedly connected to a circular plate 24;

[0049] A clamping plate 251, wherein the clamping plate 251 is designed to match the side walls at both ends of the inclined plate 2, and the clamping plate 251 is clamped on the side walls at both ends of the slide groove 25, and a uniformly arranged round rod 252 is fixedly connected to the middle of the clamping plate 251, and the round rod 252 is designed to match the round hole 254;

[0050] A spring 29, wherein the spring 29 is sleeved on the bottom surface of the support rod 23, and the spring 29 is located above the circular plate 24;

[0051] A wiper, which is mounted on the upper surface of the inclined plate 2 and is used to scrape off water drops adhering to the surface of the wire material 12;

[0052] During operation, the reduction motor 212 drives the No. 2 roller 21 and the cam 211 to rotate slowly. When the cam 211 contacts the side of the circular plate 24 during the rotation, it forces the circular plate 24 and the support rod 23 to move upward along the connecting hole 221 on the surface of the support plate 22. During the upward movement, the support rod 23 forces the spring 29 to contract and synchronously drives the sliding plate 253 to move upward along the slide groove 25. During the upward movement, the sliding plate 253 synchronously drives the wire material 12 located between the No. 3 roller 27 and the No. 4 roller 28 to move upward. When the protruding part of the cam 211 rotates to the bottom of the circular plate 24, the sliding plate 253 at this time The thread material 12 is in the highest position of upward movement, and there is a gap between the thread material 12 above the sliding plate 253 and the lower surface of the card plate 251, which can effectively prevent the thread material 12 from contacting the lower surface of the card plate 251 and affecting the clamping strength of the card plate 251. When the cam 211 rotates with the second roller 21 to intersect with the circular plate 24, the sliding plate 253, the support rod 23 and the circular plate 24 move downward under the action of their own gravity and the elastic force of the spring 29. At this time, the thread material 12 will also move downward under the action of its own gravity without the support of the sliding plate 253. After repeated movements, the thread material 12 moves up and down. During the process, the water drops adhering to the surface of the wire material 12 can be effectively shaken off onto the inclined surface of the inclined plate 2, so that the water drops dripping on the inclined surface of the inclined plate 2 can slide along the inclined surface of the inclined plate 2 to the inside of the water tank 1 for recycling, thereby effectively reducing the waste of water resources inside the water tank 1. By fixing the evenly arranged round rods 252 on the lower surface of the clamping plate 251, the wire material 12 passes through the space between two adjacent round rods 252, thereby effectively preventing the wire material 12 from sticking together during the air-drying process, and simultaneously reducing the probability of the wire material 12 sticking together and affecting the cutting of the wire material 12 by the internal cutter of the granulator. After the wire material 12 is shaken, part of it will be The water droplets slide down to the bottom surface of the wire material 12, and a wiper is installed on the inclined surface of the inclined plate 2 between the No. 1 roller 34 and the No. 3 roller 27, so that the bottom surface of the wire material 12 after shaking contacts with the wiper. During the contact between the wire material 12 and the wiper, the water droplets remaining at the bottom of the wire material 12 can be effectively scraped off and dripped onto the inclined surface of the inclined plate 2 to flow into the water tank 1 for recycling, thereby further reducing the probability of water droplets adhering to the surface of the wire material 12. The coordinated design of the wiper and the air outlet cover 32 can effectively improve the air-drying effect of the wire material 12, reduce the air-drying time of the wire material 12, and simultaneously improve the air-drying efficiency of the wire material 12.

[0053] As an embodiment of the present invention, the wiper element includes: a rectangular groove 26, the rectangular groove 26 is opened on the side walls at both ends of the inclined plate 2, a horizontal plate 261 is slidably connected inside the rectangular groove 26, and a clamping groove 262 is opened in the middle of the horizontal plate 261;

[0054] The scraper 263 is designed in a T-shaped structure and is clamped in the clamping groove 262. The top of the scraper 263 is in contact with the wire material 12. The scraper 263 is used to scrape off water drops adhering to the surface of the wire material 12.

[0055] When working, before starting the cooling table 36, the staff first clamps the scraper 263 along the clamping groove 262 on the surface of the horizontal plate 261 into the inside of the clamping groove 262, and then the staff holds the horizontal plate 261 and the clamping plate 251 and slides them along the rectangular groove 26 to the inclined surface of the inclined plate 2, and the horizontal plate 261 and the scraper 263 are clamped above the inclined surface of the inclined plate 2, so that the bottom end of the wire material 12 after shaking is attached to the top of the scraper 263. When the wire material 12 contacts with the scraper 263, the scraper 263 can effectively scrape off the water droplets adhering to the bottom end of the wire material 12, reducing the probability of water droplets adhering to the surface of the wire material 12. Through the coordinated design of the scraper and the air outlet cover 32, the air-drying effect of the wire material 12 can be effectively improved, the air-drying time of the wire material 12 can be reduced, and the air-drying efficiency of the wire material 12 can be simultaneously improved. When the scraper 263 is worn out after long-term use and needs to be replaced, the coordinated design of the scraper 263, the slot 262 and the cross plate 261 facilitates the staff to quickly replace the scraper 263.

[0056] As an embodiment of the present invention, the scraper 263 is made of elastic and wear-resistant rubber material;

[0057] During operation, in order to increase the service life of the scraper 263, the scraper 263 is made of an elastic and wear-resistant rubber material so that the scraper 263 has good elasticity. When the scraper 263 contacts the bottom surface of the wire material 12, the elasticity of the scraper 263 is utilized so that the scraper 263 can fully fit the bottom surface of the wire material 12 to scrape off the water droplets adhering to the bottom surface of the wire material 12, thereby improving the effect of the scraper 263 in scraping off the water droplets on the bottom surface of the wire material 12. At the same time, the scraper 263 is made of an elastic and wear-resistant rubber material so that the scraper 263 has good wear resistance, thereby effectively reducing the probability of wear between the wire material 12 and the scraper 263, thereby extending the service life of the scraper 263.

[0058] As an embodiment of the present invention, the bottom end of the air outlet cover 32 is slidably connected with a wind shield 33, and handles are fixedly connected to the side walls at both ends of the wind shield 33. The wind shield 33 is used to improve the utilization rate of the air flowing out along the air outlet cover 32;

[0059] During operation, when using the air outlet hood 32 to air-dry the wire material 12 above the cooling table 36, the staff holds the handles at both ends of the wind shield 33 and presses them downward, forcing the handles to drive the wind shield 33 to move toward the position of the cooling table 36 until the lower surface of the wind shield 33 is in contact with the upper surface of the cooling table 36. The staff then stops pressing the handles. At this time, the wind flowing out along the inside of the air outlet hood 32 is blocked by the wind shield 33, thereby effectively reducing the loss of wind flowing out along the inside of the air outlet hood 32 to the sides of the air outlet hood 32, so that the wind flowing out along the inside of the air outlet hood 32 is fully blown onto the surface of the wire material 12, reducing wind waste, and thereby improving the efficiency of drying the moisture on the surface of the wire material 12.

[0060] As an embodiment of the present invention, the surfaces of the inclined plate 2, the third roller 27 and the fourth roller 28 are all coated with PTFE coating;

[0061] During operation, by coating the surface of the inclined plate 2 with PTFE coating, the PTFE coating has the non-stick and high lubrication properties, so that the water droplets dripping on the inclined surface of the inclined plate 2 can quickly slide into the water tank 1, effectively preventing the water droplets from adhering to the inclined surface of the inclined plate 2 for a long time. At the same time, the non-stick and high lubrication properties of the PTFE coating can effectively reduce the probability of wear between the wire material 12 and the No. 3 roller 27 and the No. 4 roller 28, thereby extending the service life of the No. 3 roller 27 and the No. 4 roller 28.

[0062] As an embodiment of the present invention, the surface of the No. 1 roller 34 is fixedly connected with a water absorbing layer 341, and the water absorbing layer 341 is used to absorb water drops adhering to the surface of the wire material 12;

[0063] During operation, in order to improve the air-drying effect of the wire material 12, a water-absorbing layer 341 is fixedly connected to the surface of the No. 1 roller 34. During the contact between the wire material 12 and the water-absorbing layer 341 on the outer surface of the No. 1 roller 34, the water-absorbing layer 341 can absorb the water droplets adhering to the outer surface of the wire material 12 into the water-absorbing layer 341, and cooperate with the air outlet hood 32 to effectively improve the air-drying efficiency of the wire material 12. Since the water-absorbing layer 341 is fixedly connected to the outer surface of the No. 1 roller 34, the No. 1 roller 34 simultaneously drives the water-absorbing layer 341 to rotate during the rotation process, thereby effectively preventing a certain part of the water-absorbing layer 341 from contacting the wire material 12 for a long time and absorbing moisture from the surface of the wire material 12. At the same time, the wind flowing out from the inside of the air outlet hood 32 blows toward the wire material 12 and the water-absorbing layer 341, and the moisture absorbed by the inside of the water-absorbing layer 341 will be quickly dried by the wind, so that the water-absorbing layer 341 can continue to absorb moisture from the surface of the wire material 12 for a long time.

[0064] As an embodiment of the present invention, the water absorbing layer 341 is made of wear-resistant sponge material;

[0065] During operation, in order to extend the service life of the water absorbing layer 341 , the water absorbing layer 341 is made of a wear-resistant sponge material. The wear-resistant sponge has good water absorption and wear resistance, thereby effectively reducing the wear of the wire material 12 on the water absorbing layer 341 and simultaneously increasing the service life of the water absorbing layer 341 .

[0066] As an embodiment of the present invention, a separation plate 37 is fixedly connected to the rear end of the cooling stage 36. The separation plate 37 is designed in a comb-tooth structure. The separation plate 37 is used to reduce the probability of the strands 12 adhering together.

[0067] During operation, in order to prevent two adjacent strands 12 from adhering to each other after air-drying and flowing into the granulator to affect the cutting of the strands 12 by the cutter, a separation plate 37 is fixedly connected to the rear end of the cooling table 36. The separation plate 37 is designed in a comb-tooth structure. The air-dried strands 12 flow out along the gaps inside the separation plate 37. Each strand 12 can only move in one of the gaps inside the separation plate 37, thereby effectively preventing two adjacent strands 12 from adhering to each other and flowing into the granulator, and simultaneously reducing the probability of two adjacent strands 12 adhering to each other and flowing into the granulator to affect the cutting of the strands 12 by the cutter.

[0068] A polypropylene production device and a production process thereof, wherein the polypropylene production device and the production process thereof are applicable to the polypropylene production device described in any one of claims 1 to 9, and the polypropylene production device and the production process thereof; comprise the following steps:

[0069] S1. The recovered masterbatch is cleaned, and the severely dyed masterbatch needs to be decolorized with caustic soda, and then the masterbatch is dried using a boiling dryer, a vacuum drying hopper or a vacuum dryer to remove the residual moisture in the masterbatch, and the dried masterbatch is put into a mixer or a kneader for mixing and kneading, and then the kneaded masterbatch is put into an extruder to extrude the strand 12 into the water tank 1, and is cooled by contact with the water inside the water tank 1;

[0070] S2. The wire material 12 is solidified and formed after being cooled by the water in the water tank 1. At this time, since the wire material 12 is fully in contact with the water in the water tank 1, some water droplets will remain on the surface of the wire material 12. The cooled wire material 12 flows out along the rear end of the water tank 1 to the upper side of the inclined surface of the inclined plate 2. In order to reduce the water droplets adhering to the surface of the wire material 12, the second roller 21 and the cam 211 are driven to rotate by the reduction motor 212. During the rotation process, the cam 211 contacts the circular plate 24 and forces the circular plate 24, the support rod 23, the sliding plate 253 and the third roller 27 The wire material 12 between the fourth roller 28 moves upward. When the cam 211 rotates and intersects with the circular plate 24, the sliding plate 253, the support rod 23 and the circular plate 24 move downward under the action of their own weight and the elastic force of the spring 29. The wire material 12 will also move downward under the action of its own weight without the support of the sliding plate 253. In this way, the wire material 12 can effectively shake off the water drops adhering to the surface of the wire material 12 onto the inclined surface of the inclined plate 2 and slide into the inside of the water tank 1 during the ups and downs process.

[0071] S3. Since a scraper 263 is installed on the inclined surface of the inclined plate 2 between the No. 1 roller 34 and the No. 3 roller 27, the scraper 263 is in contact with the bottom surface of the wire material 12, so that the scraper 263 can effectively scrape off the water droplets remaining at the bottom of the wire material 12, further reducing the probability of water droplets adhering to the surface of the wire material 12;

[0072] S4. The wire material 12 with water droplets scraped off by the scraper 263 flows to the top of the cooling table 36, and the wind generated by the fan 3 flows into the inside of the air outlet hood 32 through the air inlet pipe 31. The air outlet direction of the air outlet hood 32 is aimed at the wire material 12 on the upper surface of the No. 1 roller 34 and the moisture adhering to the surface of the wire material 12 is blown dry. By fixing the water absorption layer 341 on the surface of the No. 1 roller 34, during the contact between the wire material 12 and the water absorption layer 341 on the outer surface of the No. 1 roller 34, the water absorption layer 341 can absorb the water droplets adhering to the outer surface of the wire material 12 into the inside of the water absorption layer 341, and cooperate with the air outlet hood 32 to effectively improve the air-drying efficiency of the wire material 12. The air-dried wire material 12 enters the inside of the granulator, where the wire material 12 is cut according to the set size to complete the granulation.

[0073] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A polypropylene production equipment, comprising a water tank (1), a cooling table (36), a fan (3), an air outlet hood (32) and a strand (12), wherein the bottoms of the water tank (1) and the cooling table (36) are both fixedly connected with uniformly arranged support frames (11), the strand (12) is located inside the water tank (1), the fan (3) is located directly below the cooling table (36), the cooling table (36) is rotatably connected with uniformly arranged No. 1 rollers (34), two adjacent No. 1 rollers (34) are rotatably connected via a No. 1 belt (35), the fan (3) and the air outlet hood (32) are connected via an air inlet pipe (31), and the air outlet hood (32) is located directly above the cooling table (36); characterized in that: The cooling stage (36) further comprises: An inclined plate (2), the water trough (1) and the cooling table (36) are fixedly connected via the inclined plate (2), a No. 2 roller (21) is rotatably connected to the bottom of the inclined plate (2), the No. 2 roller (21) is designed to penetrate the inclined plate (2), and the inclined plate (2) is used to drip water adhering to the surface of the wire material (12) onto the surface of the inclined plate (2) and slide into the water trough (1); a No. 3 roller (27), the No. 3 roller (27) is rotatably connected between the left and right side walls of the upper surface of the inclined plate (2), and the height of the No. 3 roller (27) is greater than the height of the No. 1 roller (34); A fourth roller (28), the fourth roller (28) being rotatably connected between the left and right side walls of the upper surface of the inclined plate (2), the fourth roller (28) being located at the front end of the third roller (27), and the height of the fourth roller (28) being less than the height of the first roller (34); A reduction motor (212), wherein the rotation shaft of the reduction motor (212) is fixedly connected to the end of the No. 2 roller (21), a symmetrically designed cam (211) is fixedly connected to the surface of the No. 2 roller (21), and the No. 2 roller (21) is rotationally connected to the No. 1 roller (34) via a No. 2 belt (213); A shaking device, the shaking device is located between the third roller (27) and the fourth roller (28), and the shaking device is used to reduce the adhesion of moisture on the surface of the strand (12); The shaking device comprises: A slide groove (25), the slide groove (25) is formed on the side walls at both ends of the inclined surface of the inclined plate (2), a sliding plate (253) is slidably connected inside the slide groove (25), and a surface of the sliding plate (253) is formed with evenly arranged circular holes (254); A support plate (22), the support plate (22) is symmetrically designed and is respectively fixedly connected to the left and right side walls of the inclined plate (2), a connecting hole (221) is opened in the middle of the upper surface of the support plate (22), a support rod (23) is slidably connected inside the connecting hole (221), the top of the support rod (23) is fixedly connected to the sliding plate (253), and the bottom of the support rod (23) is fixedly connected to a circular plate (24); A clamping plate (251), the clamping plate (251) is designed to match the side walls at both ends of the inclined plate (2), the clamping plate (251) is clamped on the side walls at both ends of the slide groove (25), and the middle of the clamping plate (251) is fixedly connected with evenly arranged round rods (252), and the round rods (252) are designed to match the round holes (254); A spring (29), wherein the spring (29) is sleeved on the bottom surface of the support rod (23), and the spring (29) is located above the circular plate (24); A wiper, the wiper being mounted on the upper surface of the inclined plate (2), the wiper being used to scrape off water droplets adhering to the surface of the wire material (12); The reduction motor (212) drives the second roller (21) and the cam (211) to rotate slowly. During the rotation process, the cam (211) contacts the side of the circular plate (24) and forces the circular plate (24) and the support rod (23) to move upward along the connecting hole (221) on the surface of the support plate (22). During the upward movement process, the support rod (23) forces the spring (29) to contract and synchronously drives the sliding plate (253) to move upward along the slide groove (25). During the upward movement process, the sliding plate (253) synchronously drives the wire material (12) located between the third roller (27) and the fourth roller (28) to move upward. When the protruding part of the cam (211) rotates to the bottom of the circular plate (24), The sliding plate (253) is at the highest position of upward movement, and there is a gap between the wire material (12) above the sliding plate (253) and the lower surface of the clamping plate (251), thereby effectively preventing the wire material (12) from contacting the lower surface of the clamping plate (251) and affecting the clamping strength of the clamping plate (251). When the cam (211) rotates with the No. 2 roller (21) to intersect with the circular plate (24), the sliding plate (253), the support rod (23) and the circular plate (24) move downward under the action of their own weight and the elastic force of the spring (29). At this time, the wire material (12) will also move downward under the action of its own weight without the support of the sliding plate (253); The wiper element comprises: A rectangular groove (26), the rectangular groove (26) being formed on the side walls at both ends of the inclined plate (2), a horizontal plate (261) being slidably connected inside the rectangular groove (26), and a clamping groove (262) being formed in the middle of the horizontal plate (261); a scraper (263), the scraper (263) being designed in a "T"-shaped structure and being clamped inside the clamping groove (262), the top of the scraper (263) being in contact with the wire material (12), and the scraper (263) being used to scrape off water drops adhering to the surface of the wire material (12); The scraper (263) is made of elastic and wear-resistant rubber material; The bottom end of the air outlet cover (32) is slidably connected to a wind shield (33), and handles are fixedly connected to the side walls at both the front and rear ends of the wind shield (33), and the wind shield (33) is used to improve the utilization rate of the air flowing out along the air outlet cover (32); The surfaces of the inclined plate (2), the third roller (27) and the fourth roller (28) are all coated with a PTFE coating; The surface of the first roller (34) is fixedly connected with a water absorbing layer (341), and the water absorbing layer (341) is used to absorb water drops adhering to the surface of the wire material (12); The water absorbing layer (341) is made of wear-resistant sponge material; A separation plate (37) is fixedly connected to the rear end of the cooling stage (36), and the separation plate (37) is designed in a comb-tooth structure. The separation plate (37) is used to reduce the probability of the strands (12) adhering together.

2. A polypropylene production process, characterized in that: The polypropylene production process is applicable to the polypropylene production equipment described in claim 1, and the polypropylene production process comprises the following steps: S1. The recovered masterbatch is cleaned, and the severely stained masterbatch is decolorized with caustic soda, and then the masterbatch is dried with a boiling dryer or a vacuum dryer to remove the residual moisture in the masterbatch, and the dried masterbatch is put into a mixer or a kneader for mixing and kneading, and then the kneaded masterbatch is put into an extruder to extrude the strands (12) into the water tank (1), and is cooled by contact with the water in the water tank (1); S2. The wire material (12) is solidified and formed after being cooled by the water in the water tank (1). At this time, since the wire material (12) is in full contact with the water in the water tank (1), some water droplets will remain on the surface of the wire material (12). The cooled wire material (12) flows out along the rear end of the water tank (1) to the upper side of the inclined surface of the inclined plate (2). In order to reduce the water droplets adhering to the surface of the wire material (12), the second roller (21) and the cam (211) are driven to rotate by the reduction motor (212). During the rotation process, the cam (211) contacts the circular plate (24) and forces the circular plate (24), the support rod (23), the sliding plate (253) and the third roller (254). 7) and the wire material (12) between the fourth roller (28) moves upward, and when the cam (211) rotates and intersects with the circular plate (24), the sliding plate (253), the support rod (23) and the circular plate (24) move downward under the action of their own weight and the elastic force of the spring (29). Without the support of the sliding plate (253), the wire material (12) will also move downward under the action of its own weight. In this way, the wire material (12) can effectively shake off the water drops adhering to the surface of the wire material (12) onto the inclined surface of the inclined plate (2) and slide into the inside of the water tank (1) during the ups and downs process. S3. Since a scraper (263) is installed on the inclined surface of the inclined plate (2) between the first roller (34) and the third roller (27), the scraper (263) is in contact with the bottom surface of the wire material (12), so that the scraper (263) can effectively scrape off the water droplets remaining at the bottom of the wire material (12), further reducing the probability of the water droplets adhering to the surface of the wire material (12); S4. The strand (12) from which water droplets are scraped off by the scraper (263) flows to the top of the cooling platform (36), and the wind generated by the fan (3) flows into the inside of the air outlet hood (32) through the air inlet pipe (31). The air outlet direction of the air outlet hood (32) is aimed at the strand (12) on the upper surface of the No. 1 roller (34) and the moisture adhering to the surface of the strand (12) is blown dry. By fixing a water absorption layer (341) on the surface of the No. 1 roller (34), during the contact between the strand (12) and the water absorption layer (341) on the outer surface of the No. 1 roller (34), the water absorption layer (341) can absorb the water droplets adhering to the outer surface of the strand (12) into the inside of the water absorption layer (341), and cooperate with the air outlet hood (32) to effectively improve the air drying efficiency of the strand (12). The air-dried strand (12) enters the inside of the granulator, where the strand (12) is cut according to the set size to complete the granulation.

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