Automatic plastic particle drying tower

Abstract

The present application relates to the technical field of plastic processing, and more particularly to an automatic drying tower for plastic particles, comprising an isolation cylinder and a drying cylinder, etc.; the isolation cylinder is connected with an air inlet pipe; and the drying cylinder is installed in the isolation cylinder. The present application realizes cleaning of plastic powder and multiple participation of plastic particles in drying through circulation, solves the problem of setting multiple layers of screens to intercept plastic particles multiple times, ensures the drying degree of plastic particles, and prevents the plastic powder from adhering to the screens and the plastic particles, which is difficult for workers to clean and cannot be effectively treated in the drying process, thereby affecting the quality of the dried plastic particles; the suction force generated by the suction pipe acts on the air holes through the separation cavity, synchronously separates the hot air flow, evaporated water vapor and diffused plastic powder in the drying cylinder during the drying process, effectively reduces the probability of water vapor adhering to the surface of the un-dried plastic particles, and realizes the pre-treatment of the plastic powder.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of plastic processing, and particularly relates to an automatic plastic particle drying tower. BACKGROUND

[0002] In the production process of plastic particles, drying is one of the key links to ensure product quality. The traditional drying equipment usually adopts a multi-layer screen structure, and water evaporation is realized through the reverse contact of hot air flow and plastic particles. However, this method has the following technical defects: the contact time of plastic particles with hot air flow is short during free fall, which leads to insufficient water evaporation. Although increasing the number of screen layers can prolong the contact time, the surface of the plastic particles is easy to be brittle and fall off plastic debris during the drying process. The plastic debris falling off is easy to be broken into plastic powder during the falling and colliding process due to its brittle texture. This will cause the plastic powder to adhere to each layer of the screen and the plastic particles, which is difficult for workers to clean up. In addition, it is difficult to effectively treat the adhered plastic powder during the drying process, which will cause the plastic powder adhered to the surface of the plastic particles to form black spots on the surface, seriously affecting the appearance quality of the product. SUMMARY

[0003] In order to overcome the difficulty in cleaning plastic powder, which leads to the formation of black spots on the surface of the plastic particles during the drying process, and affects the appearance quality of the product, the present application provides an automatic plastic particle drying tower.

[0004] The technical implementation of the present application is: a plastic particle automatic drying tower, comprising an isolation cylinder, a screen, a drying cylinder and an electric push rod; the isolation cylinder is connected with an air inlet pipe; the drying cylinder is installed in the isolation cylinder; the electric push rod is arranged on the drying cylinder; the output end of the electric push rod is provided with the screen; the drying cylinder is provided with an avoidance groove, the screen is arranged in the avoidance groove, and the screen is in contact with the wall surface of the avoidance groove; further comprising an air exhaust pipe, a connecting frame, a baffle, a guide plate, an arc plate and a lifting assembly; the drying cylinder is provided with a feeding port; a plurality of rectangular grooves are formed in the drying cylinder, and the rectangular grooves are arranged in a downward inclined manner; the guide plate is fixedly connected to the inner side of the drying cylinder and located below the screen, and a plurality of air vents are formed in the guide plate; the cross section of the guide plate is in the shape of inverted V, and the outer edge of the upper side of the guide plate is flush with the inner edge of the lower side of the rectangular groove towards the center of the drying cylinder; a storage cavity is formed between the isolation cylinder and the drying cylinder; a plurality of air exhaust pipes are symmetrically arranged on the isolation cylinder and communicate with the storage cavity; the lifting assembly is arranged on the isolation cylinder; the connecting frame is installed on the lifting assembly; the screen plate for supporting the plastic particles is arranged on the connecting frame, and a pressure sensor is arranged at the connection between the screen plate and the connecting frame; the isolation cylinder, the connecting frame, the screen plate and the drying cylinder jointly form a collection cavity; a plurality of baffles are slidably connected to the drying cylinder, and the baffles are provided with electromagnets; the upper side of the baffle is in contact with the screen plate, and the lower side of the baffle is connected to the isolation cylinder through a spring telescopic rod; a plurality of arc plates are fixedly connected to the screen plate and communicate with the collection cavity, and each arc plate is hollow; the upper side of each arc plate is provided with an intercepting net; and a plurality of round holes are formed in the screen plate.

[0005] Optionally, the lifting assembly comprises a servo motor and a steel cable; a plurality of servo motors are fixedly connected to the upper side of the isolation cylinder; one steel cable is fixedly connected to the output end of each servo motor; and the other ends of all the steel cables are fixedly connected to the connecting frame.

[0006] Optionally, the drying cylinder is provided with a separation cavity communicating with the storage cavity; a plurality of air holes communicating with the separation cavity are formed in the drying cylinder, and the air holes are arranged close to the lower side of the screen.

[0007] Optionally, the present application further comprises a guide block; a plurality of guide blocks for preventing powder accumulation are fixedly connected in the separation cavity; and the upper side of each guide block is inclined towards the area between the two rectangular grooves.

[0008] Optionally, the present application further comprises a stop block; a stop block for preventing the air vent from being blocked is fixedly connected to each air vent on the guide plate; and the diameter of each stop block is greater than the diameter of the air vent on the guide plate.

[0009] Optionally, the screen plate is in the shape of inverted flat-topped cone.

[0010] Optionally, a counterweight is arranged in the connecting frame.

[0011] Optionally, the sliding frame is further included; the isolation cylinder is connected with the sliding frame, which facilitates workers to check the drying state of the plastic particles.

[0012] Optionally, the sliding ring is further included; the isolation cylinder is slidingly connected with the sliding ring; and the sliding frame is slidingly arranged on the sliding ring.

[0013] Optionally, the inclination angle of the sliding frame is consistent with the inclination angle of the sieve plate, and the lower side of the sliding frame is provided with bristles.

[0014] Compared with the prior art, the present application has the following advantages: the present application realizes cleaning of the plastic powder through circulation and multiple participation of the plastic particles in drying, solves the problem that setting multiple layers of sieve nets to intercept the plastic particles multiple times may cause the plastic powder to adhere to each layer of sieve net and the plastic particles, which is difficult for workers to clean and cannot be effectively treated in the drying process, and affects the quality of the plastic particles after drying;

[0015] Through the separation cavity, the suction force generated by the suction pipe acts on the air hole, synchronously sucking away the hot air flow, evaporated water vapor and diffused plastic powder in the drying cylinder during the drying process, which not only effectively reduces the probability of water vapor adhering to the surface of the un-dried plastic particles, but also realizes the pre-suction treatment of the plastic powder, significantly reducing the total amount of the plastic powder migrating to the collection cavity, so as to facilitate the arc-shaped plate to clean the powder adhering to the surface of the plastic particles entering the collection cavity. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a three-dimensional structure schematic diagram of the plastic particle automatic drying tower of the present application;

[0017] Figure 2 It is a sectional view of the isolation cylinder of the present application;

[0018] Figure 3 It is a sectional view of the combination of the isolation cylinder, the connecting frame and the drying cylinder of the present application;

[0019] Figure 4 It is a front view of the combination of the drying cylinder and the guide block of the present application;

[0020] Figure 5 It is a three-dimensional structure schematic diagram of the guide block of the present application;

[0021] Figure 6 It is a three-dimensional structure schematic diagram of the combination of the connecting frame, the sieve plate and the arc-shaped plate of the present application;

[0022] Figure 7 It is a three-dimensional structure schematic diagram of the combination of the guide plate and the stopper of the present application;

[0023] Figure 8 It is a three-dimensional structure schematic diagram of the combination of the suction pipe, the drying cylinder and the arc-shaped plate of the present application;

[0024] Figure 9 This is a three-dimensional structural diagram of the first perspective combination of the sliding frame and the sliding ring of the present invention;

[0025] Figure 10 This is a schematic diagram of the second perspective combination of the sliding frame and the sliding ring of the present invention.

[0026] The components in the attached diagram are labeled as follows: 1-Isolation cylinder, 1001-Inlet pipe, 1002-Storage chamber, 2-Screen, 3-Extraction pipe, 4-Connecting frame, 4001-Collection chamber, 4002-Round hole, 4003-Screen plate, 5-Drying cylinder, 5001-Allowing groove, 5002-Feed inlet, 5003-Air hole, 5004-Separation chamber, 5005-Rectangular groove, 101-Servo motor, 102-Steel cable, 103-Baffle, 104-Electric push rod, 105-Guide plate, 106-Arc plate, 107-Guide block, 108-Stop block, 201-Sliding frame, 202-Slip ring. Detailed Implementation

[0027] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Example 1: As Figures 1-8 As shown, an automatic drying tower for plastic granules includes an isolation cylinder 1, a screen 2, a drying cylinder 5, and an electric push rod 104. An air inlet pipe 1001 is connected to the isolation cylinder 1, and the air inlet pipe 1001 is connected to an external pump. The drying cylinder 5 is installed inside the isolation cylinder 1. An electric push rod 104 is installed on the drying cylinder 5. The output end of the electric push rod 104 is provided with a screen 2. A clearance groove 5001 is provided inside the drying cylinder 5, and the screen 2 is installed inside the clearance groove 5001, and the screen 2 is in contact with the wall of the clearance groove 5001.

[0029] The device further comprises the air suction pipe 3, the connecting frame 4, the baffle 103, the guide plate 105, the arc-shaped plate 106 and the lifting assembly; the drying cylinder 5 is provided with the feeding port 5002; two rectangular grooves 5005 are formed in the drying cylinder 5 and are arranged in a downward inclined manner; the guide plate 105 is fixedly connected to the inner side of the drying cylinder 5 and is located below the screen 2; a plurality of air vents are formed in the guide plate 105; the guide plate 105 is in an inverted V-shaped cross section and the upper outer edge of the guide plate 105 is flush with the inner edge of the rectangular groove 5005 on the lower side of the drying cylinder 5; the storage cavity 1002 is formed between the isolation cylinder 1 and the drying cylinder 5; two air suction pipes 3 are symmetrically arranged on the isolation cylinder 1 and are in communication with the storage cavity 1002; each air suction pipe 3 is connected to an external pump; the lifting assembly is arranged on the isolation cylinder 1; the connecting frame 4 is mounted on the lifting assembly; the screen plate 4003 is arranged on the connecting frame 4 and is provided with a pressure sensor at the connection position with the connecting frame 4; the isolation cylinder 1, the connecting frame 4, the screen plate 4003 and the drying cylinder 5 jointly form a collection cavity 4001; two baffles 103 are slidably connected to the drying cylinder 5 and are provided with electromagnets; the upper side of the baffle 103 is in contact with the screen plate 4003 and the lower side of the baffle 103 is connected to the isolation cylinder 1 through a spring telescopic rod; four arc-shaped plates 106 are fixedly connected to the screen plate 4003 and are in communication with the collection cavity 4001; each arc-shaped plate 106 is hollow and all the arc-shaped plates 106 are connected to an external pump through a pipeline; the upper side of each arc-shaped plate 106 is provided with an intercepting net and the pore size of the intercepting net is smaller than the diameter of the plastic particles; a plurality of circular holes 4002 are formed in the screen plate 4003 and the diameter of each circular hole 4002 is smaller than the diameter of the plastic particles.

[0030] The lifting assembly comprises the servo motor 101 and the steel cable 102; two servo motors 101 are fixedly connected to the upper side of the isolation cylinder 1; one steel cable 102 is fixedly connected to the output end of each servo motor 101; the other ends of all the steel cables 102 are fixedly connected to the connecting frame 4.

[0031] The drying cylinder 5 is provided with a separation cavity 5004 in communication with the storage cavity 1002; a plurality of air holes 5003 are formed in the drying cylinder 5 and are in communication with the separation cavity 5004; the air holes 5003 are formed close to the lower side of the screen 2.

[0032] Further, the device further comprises the guide block 107; a plurality of guide blocks 107 are fixedly connected in the separation cavity 5004; the upper side of each guide block 107 is inclined towards the area between the two rectangular grooves 5005.

[0033] Further, the device further comprises the stop block 108; one stop block 108 is fixedly connected to each air vent on the guide plate 105; the diameter of each stop block 108 is greater than the diameter of the air vent on the guide plate 105.

[0034] The sieve plate 4003 is set as an inverted flat-topped cone.

[0035] The connecting frame 4 is internally provided with a counterweight.

[0036] In the plastic particle drying operation process, the worker first puts the plastic particles to be treated into the drying cylinder 5 through the feeding port 5002, and the plastic particles are supported by the sieve net 2, and then the external pump sends hot gas to the air inlet pipe 1001. The hot gas is uniformly distributed through the air inlet of the guide plate 105 and continuously rises. In this process, the electric push rod 104 is controlled to reciprocate, so that the electric push rod 104 drives the sieve net 2 to reciprocate in the avoidance groove 5001, and then the plastic particles pass through the sieve net 2 in turn and fall downward. In the falling process, the plastic particles will be in reverse contact with the rising hot gas flow, so as to achieve the function of drying the plastic particles. The dried hot gas and water vapor continuously rise, penetrate the sieve net 2 and the plastic particles that do not pass through the sieve net 2 in turn, and finally are discharged through the drying cylinder 5. The dried plastic particles are guided by the inverted V-shaped guide plate 105 to flow into the rectangular groove 5005, and then flow from the rectangular groove 5005 to the storage cavity 1002. Finally, the external pump is controlled to exhaust, so that the plastic particles are extracted from the exhaust pipe 3.

[0037] In the process of drying plastic particles with hot gas, the contact time between the plastic particles and the hot gas is short due to the fast falling speed of the plastic particles. The additional multi-layer screen 2 intercepts the plastic particles multiple times to prolong the contact time between the plastic particles and the hot gas. Although the contact time between the particles and the hot gas is prolonged, the surface of the plastic particles is prone to brittle and plastic debris falls off during the drying process. The plastic debris is brittle and prone to breakage and form plastic powder during the falling and collision process, which will cause the plastic powder to adhere to the screen 2 and the plastic particles. The subsequent workers are difficult to clean, and the adhered plastic powder cannot be effectively treated during the drying process. After the plastic powder adheres to the surface of the plastic particles that are not completely dried, black spots will form on the surface of the plastic particles during the drying process, which will affect the quality of the finished product. Therefore, when the plastic particles fall from the rectangular groove 5005 to the storage cavity 1002, the screen plate 4003 is used to carry the plastic particles, and at the same time, the external pump is started and compressed gas is transported to the arc plate 106 through a special pipeline. After the airflow passes through the interception net (the mesh diameter of the interception net is smaller than the minimum particle size of the plastic particles) of the arc plate 106, it forms an upward blowing force on the plastic particles in the collection cavity 4001, causing the particle group on the screen plate 4003 to produce periodic fluidized motion. The particles rise to a certain height under the action of the airflow and then fall back due to the decrease in power. Since the screen plate 4003 is arranged in the shape of an inverted flat-topped cone, the falling particles will naturally slide to the area of the arc plate 106 and be blown up again, forming a continuous tumbling effect. Through the mutual friction between the particles, the adhered powder on the surface is effectively stripped. At the same time, the suction pipe 3 continuously sucks the storage cavity 1002, and the suction force acts on the collection cavity 4001 through the round holes 4002 on the screen plate 4003. Since the diameter of the round holes 4002 is smaller than the minimum particle size of the plastic particles, the plastic particles are completely blocked in the cavity, while the plastic powder is efficiently discharged with the airflow, thereby reducing the plastic powder on the surface of the plastic particles. Further, the suction force generated by the suction pipe 3 also acts on the air hole 5003 through the separation cavity 5004, thereby simultaneously sucking the hot gas stream, evaporated water vapor, and diffused plastic powder in the drying cylinder 5 during the drying process into the separation cavity 5004. Finally, the channel formed by the separation cavity 5004 and the suction pipe 3 discharges the equipment. This method not only effectively reduces the probability of water vapor adhering to the surface of the undried plastic particles, but also realizes the pre-suction treatment of the plastic powder, thereby significantly reducing the total amount of plastic powder migrating to the collection cavity 4001, so as to facilitate the arc plate 106 to clean the adhered powder on the surface of the plastic particles entering the collection cavity 4001.

[0038] It is explained that in the above process, no material is discharged, and the hot gas, plastic powder, and water vapor are removed by the suction pipe 3. The suction pipe 3 is connected to the external waste collection box. When the plastic particles are discharged through the suction pipe 3, the suction pipe 3 is connected to the external plastic particle collection box.

[0039] It is explained that the suction force generated by the suction pipe 3 is difficult to suck the hot air flow in the drying cylinder 5 through the circular hole 4002, the collection cavity 4001 and the rectangular groove 5005 due to the compressed gas sprayed by the arc-shaped plate 106 and the plastic particles in the collection cavity 4001. Even if the suction force acts on the hot air flow in the drying cylinder 5 through the rectangular groove 5005, the suction force is limited (weak) and will not affect the drying of the plastic particles by the hot air flow. It is further explained that when the hot air flow, evaporated water vapor and diffused plastic powder in the drying cylinder 5 are sucked away through the air hole 5003, the air hole 5003 is close to the sieve 2, that is, it does not affect the plastic particles to form reverse contact with the rising hot air flow during the falling process to dry. It is explained that during the periodic fluidization movement of the particle group on the sieve plate 4003 caused by the compressed gas sprayed by the arc-shaped plate 106, part of the plastic powder will follow the sprayed gas of the arc-shaped plate 106 into the drying cylinder 5 through the rectangular groove 5005, then follow the rising hot air flow in the drying cylinder 5 to rise synchronously and then be sucked away by the air hole 5003. It is further explained that by setting the rectangular groove 5005 inclined downward, the plastic particles are more easily discharged to the collection cavity 4001. At the same time, the plastic particles at the collection cavity 4001 can still be guided to return to the collection cavity 4001 through the baffle 103 and the inclined downward rectangular groove 5005 when they flow back to the upper side of the baffle 103 under the action of the gas sprayed by the arc-shaped plate 106.

[0040] As the plastic particles continue to flow into the collection cavity 4001, the gas released by the arc-shaped plate 106 is difficult to handle the accumulated plastic particles, causing the plastic powder on the surface of the plastic particles to be incompletely cleaned, so when the plastic particles gradually accumulate, the weight of the plastic particles borne by the sieve plate 4003 continuously increases, thereby triggering the pressure sensor at the connection between the sieve plate 4003 and the connecting frame 4 (the specific triggering weight is set by the worker according to the weight of a single plastic particle to control the amount of plastic particles on the sieve plate 4003), and the pressure sensor controls the two servo motors 101 to start winding the steel cable 102, pulling the connecting frame 4, the sieve plate 4003 and the plastic particles upwards. It should be noted that in the initial state, the spring telescopic rod between the isolation cylinder 1 and the baffle 103 is in a compressed state under the extrusion of the connecting frame 4, and the electromagnet provided on the baffle 103 is in a closed state. When the connecting frame 4 rises, the spring telescopic rod returns to its original position, thereby pushing the baffle 103 to move upwards together with the connecting frame 4. When the baffle 103 covers the rectangular slot 5005, the plastic particles cannot flow from the rectangular slot 5005 to the collection cavity 4001 at this time, and the spring telescopic rod between the baffle 103 and the isolation cylinder 1 returns to its limit. When the connecting frame 4 continues to rise, the sieve plate 4003 passes through the height position of the sieve net 2, the external pump is controlled to stop blowing (the specific automatic control of the external pump can be realized according to the output shaft diameter of the servo motor 101 and the number of revolutions of the output shaft of the servo motor 101), so that the arc-shaped plate 106 stops blowing into the collection cavity 4001. When the collection cavity 4001 is connected with the feed inlet 5002, the plastic particles in the collection cavity 4001 fall into the drying cylinder 5 again through the feed inlet 5002, that is, they fall onto the sieve net 2 again to continue the drying operation. At the same time, since the sieve plate 4003 is arranged in an inverted flat-topped conical shape, it is convenient for the plastic particles thereon to fall back onto the sieve net 2, ensuring that the sieve plate 4003 does not leave any plastic particles. It should be noted that the height of the plastic particles borne by the sieve net 2 should not exceed the height of the feed inlet 5002. When the pressure sensor returns to zero, the pressure sensor controls the servo motor 101 to reverse and loosen the wound steel cable 102, and the connecting frame 4 returns to its original position under the action of its own gravity. When the connecting frame 4 contacts the baffle 103, the connecting frame 4 pushes the baffle 103 to move downwards together, compressing the spring telescopic rod below the baffle 103. When the connecting frame 4 and the baffle 103 move downwards to their original positions, the rectangular slot 5005 is opened again, thereby allowing the plastic particles to fall into the collection cavity 4001 again. This cycle of cleaning plastic powder and multiple drying of plastic particles ensures the cleaning effect of plastic powder and the drying of plastic particles. It should be noted that the purpose of this cycle is to solve the problem that the existing technology sets multiple layers of sieve nets 2 to intercept plastic particles multiple times, ensuring the drying degree of plastic particles, which causes the plastic powder to adhere to each layer of sieve net 2 and plastic particles, making it difficult for workers to clean up later, and unable to effectively handle the adhered plastic powder during the drying process, affecting the quality of the dried plastic particles.

[0041] As shown in the drawings, when the plastic particles are completely dried and need to be discharged, the external pump is controlled to stop sending hot air into the air inlet pipe 1001, the electromagnet provided on the baffle 103 is controlled to start, so that the baffle 103 remains stationary, then the servo motor 101 drives the sieve plate 4003 to rise through the steel cable 102 and the connecting frame 4, the plastic particles supported on the sieve plate 4003 are discharged back into the drying cylinder 5, and then the plastic particles discharged from the rectangular groove 5005 are sucked away through the air suction pipe 3, so as to complete the discharging operation.

[0042] Further, the connecting frame 4 is internally provided with a counterweight, and the weight of the counterweight ensures that the baffle 103 is stably pushed downward to extrude the spring telescopic rod during the downward movement of the connecting frame 4.

[0043] Further, when the rectangular groove 5005 is closed by the baffle 103, the gas sprayed by the arc-shaped plate 106 cannot flow out from the rectangular groove 5005, so that the gas in the collecting cavity 4001 gradually increases the air pressure in the cavity, and at this time, the gas only flows out from the circular hole 4002, that is, at this time, the powder is forced to be pressed out from the circular hole 4002 under high pressure, and at the same time, the suction force generated by the air suction pipe 3 makes the plastic powder quickly follow the airflow to be discharged, thereby improving the processing capacity of the equipment for the plastic powder.

[0044] It is also considered that the rectangular groove 5005 is arranged to be inclined downward to facilitate the discharge of the plastic particles, but this design will cause a powder accumulation area to exist in the separation cavity 5004, and the powder accumulation area will affect the normal suction of the powder out of the separation cavity 5004, therefore, as shown in Figure 4 and Figure 5 , the powder is limited by the guide block 107 to avoid entering the accumulation area formed in the separation cavity 5004, and at the same time, the upper side of the guide block 107 is arranged to be inclined toward the area between the two rectangular grooves 5005 to guide the plastic powder to be easily sucked away.

[0045] It is also considered that the diameter of each baffle 108 is greater than the diameter of the air passage on the guide plate 105, so as to effectively shield the air passage on the guide plate 105, while ensuring that the hot air is normally discharged through the air passage, the plastic particles are completely blocked from contacting the air passage, so that the plastic particles cannot enter the inside of the air passage during the falling process, thereby avoiding the blockage of the air passage and ensuring that the hot air discharge channel is always unobstructed.

[0046] Embodiment 2: based on embodiment 1, as shown in Figure 1 , Figure 9 and Figure 10 , the sliding frame 201 is further included, and the sliding frame 201 is connected to the isolation cylinder 1.

[0047] Further, the sliding ring 202 is further included; the sliding ring 202 is slidably connected to the isolation cylinder 1; the sliding frame 201 is slidably arranged on the sliding ring 202.

[0048] The inclination angle of the sliding frame 201 is consistent with the inclination angle of the sieve plate 4003, and the lower side of the sliding frame 201 is provided with bristles.

[0049] The plastic particle drying process adopts timing control, in order to monitor the drying state in real time, the operator pushes the sliding frame 201 into the collection cavity 4001, when the plastic particles fall into the collection cavity 4001, they enter the sliding frame 201 at the same time, then the sliding frame 201 is pulled out, and the real-time drying state of the particles can be directly observed, through this sampling detection method, the actual drying degree and state change of different batches of plastic particles can be accurately mastered, and the drying quality can meet the standard requirements.

[0050] It is also considered that before sampling, in order to ensure that the sampled plastic particle sample has better representativeness, the worker rotates the sliding ring 202 to drive the sliding frame 201 to rotate before sampling, adjusts to the required sampling position, inserts the sliding frame 201 into the collection cavity 4001, and then obtains the plastic particles at any position in the collection cavity 4001, during equipment maintenance, since the inclination angle of the sliding frame 201 is consistent with the inclination angle of the sieve plate 4003, and the lower side of the sliding frame 201 is provided with bristles, the sliding frame 201 is completely inserted into the collection cavity 4001 and the sliding ring 202 is rotated, at this time, the bottom bristles of the sliding frame 201 completely match the inclined sieve plate 4003, the residual plastic powder is removed through the rotating action, and the suction function of the suction pipe 3 is started to timely discharge the removed powder, effectively preventing the round hole 4002 from being blocked, and keeping the equipment unobstructed.

[0051] Although the present application has been described with reference to the example embodiments, it is to be understood that the application is not limited to the disclosed example embodiments. The scope of the following claims is to be given the broadest interpretation so as to encompass all variations and equivalents.

Claims

1. A kind of automatic drying tower of plastic particles, including isolation cylinder (1);Isolation cylinder (1) is connected with air inlet pipe (1001);Drying cylinder (5) is installed in isolation cylinder (1);Electric push rod (104) is provided on drying cylinder (5);Electric push rod (104) output end is provided with screen (2);Drying cylinder (5) is provided with avoiding groove (5001), screen (2) is set in avoiding groove (5001), and screen (2) is in contact with the wall surface of avoiding groove (5001);Its characterized by: The application also comprises an air extraction pipe (3), a connecting frame (4), a baffle (103), a guide plate (105), an arc plate (106) and a lifting assembly; the drying cylinder (5) is provided with an inlet (5002); a plurality of rectangular grooves (5005) are formed in the drying cylinder (5) and are arranged in a downward inclined manner; the guide plate (105) is fixedly connected to the inner side of the drying cylinder (5) and is located below the screen (2); a plurality of air vents are formed in the guide plate (105); the cross section of the guide plate (105) is in the shape of an inverted V, and the outer edge of the upper side of the guide plate (105) is flush with the inner edge of the lower side of the rectangular groove (5005) which faces the center of the drying cylinder (5); the storage cavity (1002) is formed between the isolation cylinder (1) and the drying cylinder (5); a plurality of air extraction pipes (3) which are in communication with the storage cavity (1002) are symmetrically arranged on the isolation cylinder (1); the lifting assembly is arranged on the isolation cylinder (1); the connecting frame (4) is mounted on the lifting assembly; the screen plate (4003) for supporting the plastic particles is arranged on the connecting frame (4), and the connecting portion between the screen plate (4003) and the connecting frame (4) is provided with a pressure sensor; the isolation cylinder (1), the connecting frame (4), the screen plate (4003) and the drying cylinder (5) jointly form a collection cavity (4001); a plurality of baffles (103) are slidably connected to the drying cylinder (5), and the baffle (103) is provided with an electromagnet; the upper side of the baffle (103) is in contact with the screen plate (4003), and the lower side of the baffle (103) is connected to the isolation cylinder (1) through a spring telescopic rod; a plurality of arc plates (106) which are in communication with the collection cavity (4001) are fixedly connected to the screen plate (4003), and each arc plate (106) is hollow; the upper side of each arc plate (106) is provided with an intercepting net; a plurality of round holes (4002) are formed in the screen plate (4003).

2. An automatic drying tower for plastic particles according to claim 1, characterized in that: The lifting assembly comprises a servo motor (101) and a steel cable (102); a plurality of servo motors (101) are fixedly connected to the upper side of the isolation cylinder (1); one steel cable (102) is fixedly connected to the output end of each servo motor (101); and the other ends of all the steel cables (102) are fixedly connected to the connecting frame (4).

3. An automatic drying tower for plastic particles according to claim 1, characterized in that: The drying cylinder (5) is provided with a separation cavity (5004) which is in communication with the storage cavity (1002); a plurality of air holes (5003) which are in communication with the separation cavity (5004) are formed in the drying cylinder (5), and the air holes (5003) are arranged close to the lower side of the screen (2).

4. An automatic drying column for plastic particles according to claim 3, characterized in that: The application also comprises guide blocks (107); a plurality of guide blocks (107) for preventing powder accumulation are fixedly connected to the separation cavity (5004); and the upper side of each guide block (107) is inclined towards the area between the two rectangular grooves (5005).

5. An automatic drying column for plastic particles according to claim 1, characterized in that: The application also comprises a stop block (108); one stop block (108) for preventing the air vent from being blocked is fixedly connected to each air vent on the guide plate (105); and the diameter of each stop block (108) is greater than the diameter of the air vent on the guide plate (105).

6. An automatic drying column for plastic particles according to claim 1, characterized in that: The screen plate (4003) is in the shape of an inverted flat-topped cone.

7. An automatic drying column for plastic particles according to claim 1, characterized in that: A counterweight is arranged in the connecting frame (4).

8. An automatic drying column for plastic particles according to claim 6, characterized in that: Also include There is a sliding frame (201); the isolation cylinder (1) is connected with the sliding frame (201) which is convenient for workers to check the drying state of the plastic particles.

9. An automatic drying column for plastic particles according to claim 8, characterized in that: There is also a sliding ring (202); the isolation cylinder (1) is slidingly connected with the sliding ring (202); the sliding frame (201) is slidingly arranged on the sliding ring (202).

10. An automatic drying column for plastic particles according to claim 9, characterized in that the slide The inclination angle of the frame (201) is consistent with the inclination angle of the sieve plate (4003), and the lower side of the sliding frame (201) is provided with bristles.

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