A dust-free feeding device for plastic processing

Abstract

The present invention discloses a dust-free feeding device for plastic processing, and relates to the technical field of dust-free feeding. The present invention comprises a base, a support assembly is arranged on the top of the base, a processing container is arranged on the top of the support assembly, a fixing assembly is arranged at the top edge of the support assembly, the fixing assembly is located above the processing container, a barrel is fixedly installed inside the fixing assembly, a plurality of through holes are arranged equidistantly inside the barrel, a motor is arranged at the center of the top of the barrel, a plurality of feed pipes are arranged equidistantly on the top of the barrel, the feed pipes are connected to the inside of the barrel, and a reciprocating screw is rotatably installed at the center of the top of the inner wall of the barrel. The present invention prevents materials from stacking on each other while achieving uninterrupted feeding, which is different from the traditional feeding method that requires the equipment to be interrupted before feeding, resulting in reduced feeding efficiency. At the same time, the falling speed can be freely controlled for materials with different cleanliness levels, so as to ensure the cleanliness of the materials and avoid carrying dirt for processing, resulting in reduced quality.

Description

Technical Field

[0001] The invention relates to the technical field of dust-free feeding, in particular to dust-free feeding equipment for plastic processing. Background Art

[0002] Plastic products are objects made of polyethylene as raw material after a series of processing. Plastic products can be found everywhere in life, and plastic products can be used as containers and tools to bring great convenience to people in life. Plastic products also have a certain durability.

[0003] The patent with the patent announcement number CN114619596B discloses a dust-free feeding device for the production of polyethylene plastic packaging bags, including a bottom plate, a support plate fixedly connected to the bottom plate, a feeding shield fixedly connected to one side wall of the support plate, a feeding pipe fixedly connected to the side wall of the feeding shield away from the support plate, a storage barrel provided in the feeding shield, and a storage tank provided in the storage barrel. The patent uses centrifugal force to throw out the raw material particles to complete the feeding. Since the feeding speed is related to the centrifugal acceleration of the raw material particles, it is only necessary to control the speed of the first drive motor to adjust the feeding speed according to the needs. Combined with the working time of the first drive motor, the feeding amount can be controlled, and the error is small. The control of the feeding speed and the feeding amount is accurate. Compared with the traditional solenoid valve feeding method, it can not only increase the feeding speed according to the needs, but also control the feeding speed and the feeding amount more accurately.

[0004] However, the device still has some shortcomings: the device can control the amount of raw materials added and reduce the feeding error, but the raw material particles can only be rotated and spread flat during the feeding process. When the raw material reserves are too much, the raw material particles can only pile up on each other and are difficult to spread flat. At this time, the negative pressure fan is difficult to absorb the dust in the raw materials, resulting in the raw material particles carrying dirt for processing, which easily reduces the quality of the finished product. Summary of the invention

[0005] In view of the deficiencies of the prior art, the present invention provides a dust-free feeding device for plastic processing, which solves the problems raised in the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a dust-free feeding device for plastic processing, comprising a base, a support assembly is arranged on the top of the base, a processing container is arranged on the top of the support assembly, a fixing assembly is arranged at the top edge of the support assembly, the fixing assembly is located above the processing container, a barrel is fixedly installed inside the fixing assembly, a plurality of through holes are equidistantly arranged inside the barrel, and a motor is arranged at the center of the top of the barrel, a plurality of feed pipes are equidistantly arranged on the top of the barrel, the feed pipes are connected to the inside of the barrel, a reciprocating screw is rotatably installed at the center of the top of the inner wall of the barrel, and the top of the reciprocating screw penetrates and is fixedly installed on the output end of the motor At the bottom, a plurality of fixed rods are equidistantly and fixedly installed at the non-spiral groove below the outer wall of the reciprocating screw, and a conical feeder is fixedly installed at one end of the plurality of fixed rods away from the center of the barrel, and the outer wall of the conical feeder is slidably installed on the inner wall of the barrel, and a negative pressure fan is equidistantly and fixedly installed on the outer wall of the barrel, and a filter plate is fixedly installed inside the through hole of the barrel, and the filter plate is located on the inner side of the negative pressure fan, and a pull ring is penetrated and slidably installed on the outer wall of the reciprocating screw, and a trapezoidal circular plate is fixedly installed on the top of the pull ring, and a plurality of inclined rods are equidistantly and fixedly installed on the outer wall of the pull ring, and a heating component is hinged at the bottom of the plurality of inclined rods, and the motor is started, and the output end of the motor drives the reciprocating screw to rotate, and when the reciprocating screw rotates, it drives the fixed The fixed rod rotates, and the fixed rod drives the conical feeder to rotate along the inner wall of the drum. At this time, the external conveying equipment conveys the material, i.e., polyethylene particles, to the inside of the drum through the feed pipe. The material falling into the drum is adhered to the inner wall arc surface of the conical feeder by the centrifugal force generated by the rotation of the conical feeder. At this time, the material is tilted and laid flat on the inner wall of the conical feeder instead of being spread out in a flat posture. At the same time, the negative pressure fan is started. When the conical feeder drives the material to rotate, the dust in the material is thrown out and lifted upward by the centrifugal force. The filter hole diameter of the filter plate is larger than the dust and smaller than the material. At this time, the filter plate blocks the accidentally thrown material and the material falls back into the conical feeder. The dust is discharged by the suction of the negative pressure fan. When the feeding speed needs to be increased, the motor speed is reduced to slow down the speed of the conical feeder, so that the centrifugal force of the conical feeder on the material is weakened, thereby accelerating the falling rate of the material; the material then falls into the processing container through the bottom of the barrel for subsequent processing; the reciprocating screw restricts the pull ring through its own reciprocating spiral groove, and the built-in block of the pull ring continuously contacts the inner wall of the reciprocating spiral groove. When the reciprocating screw rotates, the pull ring is able to slide along the outer wall of the reciprocating screw, and the pull ring drives the trapezoidal circular plate to move synchronously. The trapezoidal circular plate guides the material falling from the feed pipe away from the center of the conical feeder through its own arc-shaped inclined surface. At the same time, the pull ring drives the inclined rod to move synchronously, and the inclined rod pulls the heating component to slide synchronously along the inner wall of the barrel.

[0007] According to the above technical solution, the negative pressure fan is connected to the internal through hole of the barrel, the trapezoidal circular plate passes through and is slidably installed on the outer wall of the reciprocating screw, the outer wall of the heating component is slidably connected to the inner wall of the barrel, and a circulation device is provided below the conical feeder to ensure that the upper and lower airflows inside the barrel are continuously alternated.

[0008] According to the above technical solution, the circulation device includes a circular track, a vertical rod and a plurality of horizontal plates. The bottom of the circular track is fixedly installed at the bottom edge of the inner wall of the barrel, the bottom of the vertical rod is slidably installed inside the circular track, the top of the vertical rod is fixedly installed at the edge of the outer wall of the conical feeder, and a plurality of horizontal plates are fixedly installed on the outer wall surface of the vertical rod away from the center of the barrel. The horizontal plates are equidistantly distributed on the outer wall of the vertical rod. When the conical feeder rotates, it drives the vertical rod to slide in a circular manner along the inside of the circular track, the vertical rod drives the horizontal plate to move synchronously, and the horizontal plate drives the axial rod to move synchronously.

[0009] According to the above technical solution, the circulation device also includes an axial rod and a swinging plate. The upper and lower ends of the axial rod are fixedly installed on the inner wall of the horizontal plate. The swinging plate passes through the inside and is hinged on the outer wall surface of the axial rod. A shielding device is provided under the swinging plate to prevent the material from carrying volatile harmful gases out synchronously after being heated. The axial rod drives the swinging plate to slide in a circle. During the sliding process, the swinging plate drives the airflow inside the barrel to alternate up and down through the opening of the conical feeder.

[0010] The cam is secured to the chassis and has a plurality of camshafts, each of which is secured on a sled ...

[0011] According to the above technical scheme, the shielding device includes an L-shaped plate, a transmission rod, a friction wheel and a plurality of activated carbon plates. The top of the L-shaped plate is fixedly installed on the outer wall of the fixed plate near the center of the barrel, and the transmission rod is rotatably installed on the inner wall of the L-shaped plate at one end away from the center of the barrel. A reciprocating spiral groove is provided on the outer wall of the transmission rod near the end of the L-shaped plate. The friction wheel passes through and is fixedly installed on the outer wall of the transmission rod, and the outer wall of the friction wheel contacts the bottom of the inner wall of the barrel. A plurality of activated carbon plates are equidistant and fixedly installed on the outer wall surface of the transmission rod. When the fixed plate slides in a circle, it drives the L-shaped plate to move synchronously, and the L-shaped plate drives the transmission rod to move synchronously. The transmission rod drives the friction wheel to slide and rub synchronously along the bottom of the inner wall of the barrel and generate a rotational force. When the friction wheel rotates through the friction force, it drives the activated carbon plate to rotate. When the activated carbon plate rotates, it rotates and absorbs the harmful gases naturally volatilized after the polyethylene is heated.

[0012] According to the above technical solution, the shielding device also includes a sliding plate, a vertical plate, a plurality of baffles and an angled plate. The interior of the sliding plate passes through and is slidably installed on the outer wall of the reciprocating spiral groove of the transmission rod. The interior of the vertical plate passes through and is fixedly installed on the outer wall of the sliding plate. The side of the baffles away from the center of the barrel is slidably installed on the inner wall of the vertical plate through a spring. The baffles are symmetrically distributed with the transmission rod as the center. The side of the angled plate away from the outer wall of the transmission rod is fixedly installed on the inner wall of the baffle. The inclined surface of the angled plate is located on the movement trajectory of the activated carbon plate. When the transmission rod rotates, the sliding plate is restricted by the non-self-locking reciprocating spiral groove on its outer wall, and the internal block of the sliding plate will continuously The sliding plate is contacted with the inner wall of the reciprocating spiral groove and the through rod limits the sliding plate, so the sliding plate can drive the vertical plate to move along the outer wall of the transmission rod and the through rod away from the center of the barrel and reset. The elastic force of the reset spring ensures that the sliding plate can be reset continuously, and the vertical plate drives the baffle to move synchronously. The baffle slides back and forth and blocks the area around the activated carbon plate when it is reset. At the same time, the baffle drives the angled plate to move synchronously. When the activated carbon plate rotates, it will contact the inclined surface of the angled plate to cause the angled plate to generate a sliding force. The angled plate will slide along the inner wall of the vertical plate away from the activated carbon plate and reset by the elastic force of the spring. Therefore, the baffle can move synchronously with the vertical plate and can also slide back and forth along the inner wall of the baffle.

[0013] According to the above technical solution, the shielding device also includes a through rod and a reset spring. The through rod is fixedly installed on the inner wall of the L-shaped plate at one end away from the center of the barrel, and the through rod is movable on the outer wall of the end close to the center of the barrel to penetrate the interior of the sliding disk. The reset spring is fixedly installed between the inner wall of the L-shaped plate and the outer wall of the sliding disk.

[0014] The present invention provides a dust-free feeding device for plastic processing, which has the following beneficial effects:

[0015] (1) The present invention prevents materials from stacking up on each other and realizes uninterrupted feeding by cooperating with a motor, a reciprocating screw, a fixed rod, a conical feeder, a negative pressure fan, a filter plate, a pull ring, a trapezoidal circular plate, an inclined rod and a heating component. This is different from the traditional feeding method which requires the equipment to be interrupted before feeding, which reduces the feeding efficiency. At the same time, the falling speed of materials with different cleanliness levels can be freely controlled to ensure the cleanliness of the materials and avoid carrying dirt during processing, which reduces the quality. It also prevents the materials from being directly discharged without being rotated and swung by the conical feeder when they fall, which makes it impossible to ensure the overall cleanliness of the materials. At the same time, the heat emitted by the heating component is used to dry the materials inside the barrel to prevent them from adhering to the inner wall of the conical feeder and to relatively optimize the quality of the finished product.

[0016] (2) The present invention, through the arrangement of a circulation device, cooperates with a conical feeder, annular track, vertical rod, horizontal plate, axial rod, swing plate, reset plate, fixed plate, hinged plate and abutment rod to promote the cold air flow deposited under the drum to surge upward and mix with the hot air flow, thereby avoiding excessive temperature difference between the upper and lower parts of the drum, which will cause the atomized water vapor to corrode the material and further increase the humidity of the material, and prevent the increase in the fluidity of the polyethylene melt, which will lead to excessive load during the processing and increase the probability of defects such as water marks on the appearance of the finished product; and promote the swing plate to swing back and forth when sliding in a circle, thereby further improving the convergence rate of the cold and hot air flows inside the drum through its own reciprocating swing on the basis of screening movement, and at the same time, the circular sliding and reciprocating swinging of the swing plate promote the non-vertical mixing of the cold and hot air flows in the mixing process, and merge them in a gentle posture to avoid the breeding of a large amount of fog.

[0017] (3) The present invention, through the setting of the shielding device, cooperates with the fixed plate, L-shaped plate, transmission rod, friction wheel, activated carbon plate, sliding plate, vertical plate, baffle plate, bevel plate, through rod and reset spring, so that the harmful gas volatilized by the material after being heated is uniformly absorbed by the activated carbon plate, so as to prevent the harmful gas from being discharged synchronously with the material, to avoid the harmful gas from deteriorating the working environment after being discharged and being inhaled by the staff around the equipment, thereby endangering their health; at the same time, the baffle plate is used to accelerate the circulation speed of the gas around the activated carbon plate, to accelerate the absorption efficiency of the activated carbon plate for the harmful gas to prevent overflow, and at the same time, the material splashed toward the activated carbon plate due to the angle deviation when falling after being heated is shielded, so as to prevent the heated polyethylene particles from adhering to the outer wall of the activated carbon plate and following the continuous rotation of the activated carbon plate to emit harmful gases. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the present invention as a whole;

[0019] Figure 2 It is a schematic diagram of the internal structure of the present invention as a whole;

[0020] Figure 3 It is a schematic diagram of the peripheral structure of the reciprocating screw rod of the present invention;

[0021] Figure 4 It is a schematic diagram of the peripheral structure of the reciprocating screw rod of the present invention from a front view;

[0022] Figure 5 It is a schematic diagram of the circulation device of the present invention;

[0023] Figure 6 For the present invention Figure 5 A schematic diagram of the structure enlargement in the middle;

[0024] Figure 7 It is a schematic diagram of the shielding device of the present invention;

[0025] Figure 8 This is a schematic diagram showing the overall appearance of the shielding device of the present invention;

[0026] Fig. 9 It is a schematic diagram of the front view of the shielding device of the present invention.

[0027] In the figure: 1. base; 2. support assembly; 21. processing container; 22. fixed assembly; 3. barrel; 31. feed pipe; 4. circulation device; 41. circular track; 42. vertical rod; 43. horizontal plate; 44. axial rod; 45. swing plate; 46. reset plate; 47. fixed plate; 48. hinged plate; 49. resistance rod; 5. shielding device; 51. L-shaped plate; 52. transmission rod; 53. friction wheel; 54. activated carbon plate; 55. sliding disk; 56. vertical plate; 57. baffle; 58. bevel plate; 59. through rod; 510. reset spring; 6. reciprocating screw; 7. fixed rod; 8. conical feeder; 9. negative pressure fan; 10. filter plate; 11. pull ring; 12. trapezoidal circular plate; 13. oblique rod; 14. heating assembly. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0029] See also Figure 1-Figure 9One embodiment of the present invention is: a dust-free feeding device for plastic processing, comprising a base 1, a support assembly 2 is arranged on the top of the base 1, a processing container 21 is arranged on the top of the support assembly 2, a fixing assembly 22 is arranged at the top edge of the support assembly 2, the fixing assembly 22 is located above the processing container 21, a barrel 3 is fixedly installed inside the fixing assembly 22, a plurality of through holes are equidistantly arranged inside the barrel 3, a motor is arranged at the top center of the barrel 3, a plurality of feed pipes 31 are equidistantly arranged on the top of the barrel 3, the feed pipes 31 are connected with the inside of the barrel 3, a reciprocating screw 6 is rotatably installed at the top center of the inner wall of the barrel 3, the top of the reciprocating screw 6 passes through and is fixedly installed at the bottom of the motor output end, a plurality of fixing rods 7 are equidistantly and fixedly installed at the non-spiral groove below the outer wall of the reciprocating screw 6, a conical feeder 8 is fixedly installed at one end away from the center of the barrel 3, the outer wall of the conical feeder 8 is slidably installed on the inner wall of the barrel 3, and the outer wall of the barrel 3 is equidistantly and fixedly installed There is a negative pressure fan 9, and a filter plate 10 is fixedly installed inside the through hole of the barrel 3. The filter plate 10 is located on the inner side of the negative pressure fan 9. A pull ring 11 is penetrated through the outer wall of the reciprocating screw 6 and slidably installed. A trapezoidal circular plate 12 is fixedly installed on the top of the pull ring 11, and a plurality of inclined rods 13 are equidistantly and fixedly installed on the outer wall of the pull ring 11. The bottoms of the plurality of inclined rods 13 are hinged with heating components 14. The above cooperation prevents the materials from stacking on each other and realizes uninterrupted feeding. The difference is that the traditional feeding method requires the equipment to be interrupted before feeding, which reduces the feeding efficiency. At the same time, the falling speed of materials with different cleanliness levels can be freely controlled to ensure the cleanliness of the materials and avoid carrying dirt for processing, which reduces the quality. The above cooperation prevents the materials from being directly discharged without being rotated and swung by the conical discharger 8 when they fall, which makes it impossible to ensure the overall cleanliness of the materials. At the same time, the heat emitted by the heating component 14 is used to dry the materials inside the barrel 3 to prevent them from adhering to the inner wall of the conical discharger 8 and relatively optimize the quality of the finished product.

[0030] The negative pressure fan 9 is connected to the internal through hole of the barrel 3, the trapezoidal circular plate 12 passes through and is slidably installed on the outer wall of the reciprocating screw 6, the outer wall of the heating component 14 is slidably connected to the inner wall of the barrel 3, and a circulation device 4 is provided below the conical feeder 8 to ensure that the upper and lower airflows inside the barrel 3 are continuously alternated.

[0031] When in use, start the motor, the motor output end drives the reciprocating screw 6 to rotate, the reciprocating screw 6 drives the fixed rod 7 to rotate when rotating, and the fixed rod 7 drives the conical feeder 8 to rotate along the inner wall of the drum 3 when rotating. At this time, the external conveying equipment conveys the material, i.e., polyethylene particles, to the inside of the drum 3 through the feeding pipe 31. The material falling into the drum 3 is adhered to the inner wall arc surface of the conical feeder 8 by the centrifugal force generated by the rotation of the conical feeder 8. At this time, the material is tilted and flattened on the inner wall of the conical feeder 8 instead of being spread in a flat posture. At the same time, the negative pressure fan 9 is started, and the conical feeder 8 is rotated. When the feeder 8 drives the material to rotate, the dust in the material is thrown out and lifted upward by centrifugal force, and the filter hole diameter of the filter plate 10 is larger than the dust and smaller than the material. At this time, the filter plate 10 blocks the accidentally thrown material and the material falls back into the conical feeder 8, and the dust is discharged by the suction of the negative pressure fan 9. When the feeding speed needs to be increased, the motor speed is reduced to slow down the speed of the conical feeder 8, so that the centrifugal force of the conical feeder 8 on the material is weakened, thereby accelerating the falling rate of the material. Through the above cooperation, the materials are prevented from stacking each other and uninterrupted feeding is achieved, which is different from the traditional The feeding method requires the equipment to be interrupted before feeding, which reduces the feeding efficiency. At the same time, the falling speed of materials with different cleanliness levels can be freely controlled to ensure the cleanliness of the materials and avoid carrying dirt for processing, which leads to reduced quality. After that, the materials fall into the processing container 21 through the bottom of the barrel 3 for subsequent processing. The reciprocating screw 6 restricts the pull ring 11 through its own reciprocating spiral groove, and the built-in block of the pull ring 11 constantly contacts the inner wall of the reciprocating spiral groove. When the reciprocating screw 6 rotates, the pull ring 11 can slide along the outer wall of the reciprocating screw 6, and the pull ring 11 drives the trapezoidal circular plate 12 to move simultaneously. The trapezoidal circular plate 12 guides the material falling from the feeding pipe 31 away from the center of the conical feeder 8 through its own arc-shaped inclined surface. At the same time, the pull ring 11 drives the inclined rod 13 to move synchronously. The inclined rod 13 pulls the heating component 14 to slide synchronously along the inner wall of the barrel 3. The above cooperation prevents the material from being discharged directly without being swung by the rotation of the conical feeder 8 when it falls, resulting in the inability to ensure the overall cleanliness of the material. At the same time, the heat emitted by the heating component 14 is used to dry the material inside the barrel 3 to prevent it from adhering to the inner wall of the conical feeder 8 and relatively optimize the quality of the finished product.

[0032] See also Figure 1-Figure 9 , based on the above embodiment, another embodiment of the present invention further includes a circulation device 4;

[0033] The circulation device 4 includes a circular track 41, a vertical rod 42 and a plurality of horizontal plates 43. The bottom of the circular track 41 is fixedly installed at the bottom edge of the inner wall of the barrel 3, the bottom of the vertical rod 42 is slidably installed inside the circular track 41, and the top of the vertical rod 42 is fixedly installed at the edge of the outer wall of the conical feeder 8. A plurality of horizontal plates 43 are fixedly installed on the outer wall surface of the vertical rod 42 away from the center of the barrel 3, and the horizontal plates 43 are evenly distributed on the outer wall of the vertical rod 42.

[0034] The circulation device 4 also includes an axial rod 44 and a swing plate 45. The upper and lower ends of the axial rod 44 are fixedly installed on the inner wall of the horizontal plate 43. The swing plate 45 passes through the inside and is hinged on the outer wall surface of the axial rod 44. A shielding device 5 is provided below the swing plate 45 to prevent the material from being discharged synchronously with volatile harmful gases after being heated. Through the above cooperation, the cold air flow deposited below the barrel 3 is prompted to surge upward and mix with the hot flow, avoiding the excessive temperature difference between the upper and lower parts of the barrel 3 to produce atomized water vapor that corrodes the material, thereby further increasing the humidity of the material, preventing the increase in the fluidity of the polyethylene melt from causing excessive load during processing, and increasing the probability of defects such as water marks on the appearance of the finished product.

[0035] The circulation device 4 also includes a reset plate 46, a plurality of fixed plates 47, a hinged plate 48 and a plurality of resistance rods 49. The reset plate 46 is fixedly installed between the outer wall of the vertical rod 42 and the outer wall of the swing plate 45. The plurality of fixed plates 47 are fixedly installed on the outer wall of the horizontal plate 43. The hinged plate 48 is hinged to the side of the horizontal plate 43 close to the center of the barrel 3 on the side away from the center of the barrel 3. The hinged plate 48 is in contact with the outer wall of the swing plate 45 on the side close to the center of the barrel 3. The bottoms of the plurality of resistance rods 49 are fixedly installed at equal distances on the bottom of the inner part of the barrel 3. The resistance rods 49 are located on the movement trajectory of the swing plate 45. Through the above cooperation, the swing plate 45 is able to swing back and forth during circular sliding. Therefore, the swing plate 45 further improves the convergence rate of the cold and hot airflows inside the barrel 3 through its own reciprocating swing on the basis of screening. At the same time, the circular sliding and reciprocating swinging of the swing plate 45 cause the non-vertical mixing of the cold and hot airflows in the mixing process, and they merge in a gentle posture to avoid the breeding of a large amount of fog.

[0036] When in use, the cone feeder 8 rotates and drives the vertical rod 42 to slide in a circle along the inside of the annular track 41, the vertical rod 42 drives the horizontal plate 43 to move synchronously, the horizontal plate 43 drives the axial rod 44 to move synchronously, and the axial rod 44 drives the swing plate 45 to slide in a circle. During the sliding process, the swing plate 45 sieves the air flow inside the drum 3 through the opening of the cone feeder 8 to alternately move up and down. Through the above cooperation, the cold air flow deposited under the drum 3 is prompted to surge upward and mix with the hot air, so as to avoid the excessive temperature difference between the upper and lower parts of the drum 3, which will be atomized into water vapor to corrode the material, thereby further increasing the humidity of the material, and preventing the polyethylene melt from increasing in fluidity, resulting in excessive load during processing, and increasing the probability of defects such as water marks on the appearance of the finished product; when the swing plate 45 slides in a circle, it will contact the resistance rod 49 to generate a resistance force, and the swing plate 45 will move along the axial rod 44 through the resistance force. The outer wall deflects in the opposite direction of its own sliding, and the swing plate 45 resists the hinge plate 48, causing the hinge axis of the hinge plate 48 to generate a rotational force. At this time, the hinge plate 48 rotates in an arc shape with its own hinge axis as the center. At the same time, the fixed plate 47 limits the hinge plate 48, causing the hinge plate 48 to scrape along its outer wall when the swing plate 45 deflects. When the swing plate 45 rotates sufficiently and passes over the resistance rod 49, the swing plate 45 is reset by the reset plate 46, and this is repeated. The above cooperation causes the swing plate 45 to swing back and forth when it slides in a circle. Therefore, the swing plate 45 further increases the convergence rate of the cold and hot air flows inside the barrel 3 through its own reciprocating swing on the basis of screening. At the same time, the circular sliding and reciprocating swinging of the swing plate 45 cause the cold and hot air flows to mix in a non-vertical manner, and merge in a gentle posture to avoid the generation of a large amount of fog.

[0037] See also Figure 1-Figure 9 , based on the above embodiment, another embodiment of the present invention further includes a shielding device 5;

[0038] The shielding device 5 includes an L-shaped plate 51, a transmission rod 52, a friction wheel 53 and a plurality of activated carbon plates 54. The top of the L-shaped plate 51 is fixedly mounted on the outer wall of the fixed plate 47 near the center of the barrel 3. The transmission rod 52 is rotatably mounted on the inner wall of the L-shaped plate 51 at one end away from the center of the barrel 3. A reciprocating spiral groove is provided on the outer wall of the transmission rod 52 near the end of the L-shaped plate 51. The friction wheel 53 penetrates through the inside and is fixedly mounted on the outer wall of the transmission rod 52, and the outer wall of the friction wheel 53 contacts the bottom of the inner wall of the barrel 3. A plurality of activated carbon plates 54 are equidistantly and fixedly mounted on the outer wall surface of the transmission rod 52. Through the above cooperation, the harmful gases volatilized after the material is heated are uniformly absorbed by the activated carbon plates 54 to prevent the harmful gases from being discharged synchronously with the materials, and to avoid the harmful gases from deteriorating the working environment after being discharged and being inhaled by the staff around the equipment, thereby endangering their health.

[0039] The shielding device 5 also includes a sliding plate 55, a vertical plate 56, a plurality of baffles 57 and an angled plate 58. The sliding plate 55 passes through the interior and is slidably installed on the outer wall of the reciprocating spiral groove of the transmission rod 52. The vertical plate 56 passes through the interior and is fixedly installed on the outer wall of the sliding plate 55. A plurality of baffles 57 are slidably installed on the inner wall of the vertical plate 56 away from the center of the barrel 3 through springs. A plurality of baffles 57 are symmetrically distributed with the transmission rod 52 as the center. The angled plate 58 is fixedly installed on the inner wall of the baffle 57 away from the outer wall of the transmission rod 52. The inclined surface of the angled plate 58 is located on the movement trajectory of the activated carbon plate 54.

[0040] The shielding device 5 also includes a through rod 59 and a return spring 510. The end of the through rod 59 away from the center of the barrel 3 is fixedly installed on the inner wall of the L-shaped plate 51, and the end of the through rod 59 close to the center of the barrel 3 is movable through the outer wall of the sliding disk 55. The return spring 510 is fixedly installed between the inner wall of the L-shaped plate 51 and the outer wall of the sliding disk 55. Through the above cooperation, the baffle 57 can push the heated plastic away from the activated carbon plate 54 to prevent the plastic from contacting and adhering to the surface of the activated carbon plate 54. At the same time, the material splashed toward the activated carbon plate 54 after heating due to the angle deviation when falling is blocked, so as to prevent the heated polyethylene particles from adhering to the outer wall of the activated carbon plate 54 and following the continuous rotation of the activated carbon plate 54 to emit harmful gases.

[0041] When in use, the fixed plate 47 drives the L-shaped plate 51 to move synchronously when it slides in a circular manner, and the L-shaped plate 51 drives the transmission rod 52 to move synchronously, and the transmission rod 52 drives the friction wheel 53 to slide and rub synchronously along the bottom of the inner wall of the barrel 3 and generate a rotational force. When the friction wheel 53 rotates through the friction force, it drives the activated carbon plate 54 to rotate. When the activated carbon plate 54 rotates, it rotates and absorbs the harmful gases naturally volatilized after the polyethylene is heated. Through the above cooperation, the harmful gases volatilized after the material is heated are uniformly absorbed by the activated carbon plate 54 to prevent the harmful gases from being discharged synchronously with the materials, and to prevent the harmful gases from deteriorating the working environment after being discharged and being inhaled by the staff around the equipment, thereby endangering their health; when the transmission rod 52 rotates, the non-self-locking reciprocating spiral groove on its outer wall limits the sliding disk 55, and at the same time, the internal block of the sliding disk 55 will continuously contact the inner wall of the reciprocating spiral groove and the through rod 59 limits the sliding disk 55, so the sliding disk 55 can drive the vertical plate 56 along the outer wall of the transmission rod 52 and the through rod 59 to move away from the circle The barrel 3 moves in the center direction and resets, and the elastic force of the reset spring 510 ensures that the sliding disk 55 can be continuously reset. The vertical plate 56 drives the baffle 57 to move synchronously. The baffle 57 slides back and forth and blocks the surrounding area of ​​the activated carbon plate 54 when resetting. At the same time, the baffle 57 drives the bevel plate 58 to move synchronously. When the activated carbon plate 54 rotates, it will contact the inclined surface of the bevel plate 58, causing the bevel plate 58 to generate a sliding force. The bevel plate 58 will slide along the inner wall of the vertical plate 56 away from the activated carbon plate 54 and reset by the elastic force of the spring. Therefore, the baffle 57 can move synchronously with the vertical plate 56 and can also slide back and forth along the inner wall of the baffle 57. Through the above cooperation, the baffle 57 can push the heated plastic away from the activated carbon plate 54 to prevent the plastic from contacting and adhering to the surface of the activated carbon plate 54. At the same time, the material splashed toward the activated carbon plate 54 due to the angle deviation when falling after heating is blocked to prevent the heated polyethylene particles from adhering to the outer wall of the activated carbon plate 54 and following the continuous rotation of the activated carbon plate 54 to emit harmful gases.

[0042] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A dust-free feeding device for plastic processing, comprising a base (1), a support assembly (2) being arranged on the top of the base (1), a processing container (21) being arranged on the top of the support assembly (2), a fixing assembly (22) being arranged at the top edge of the support assembly (2), the fixing assembly (22) being located above the processing container (21), a barrel (3) being fixedly mounted inside the fixing assembly (22), a plurality of through holes being arranged at equal intervals inside the barrel (3), a motor being arranged at the center of the top of the barrel (3), a plurality of feeding pipes (31) being arranged at equal intervals on the top of the barrel (3), the feeding pipes (31) being connected to the inside of the barrel (3), and characterized in that: A reciprocating screw (6) is rotatably mounted at the center of the top of the inner wall of the barrel (3); the top of the reciprocating screw (6) penetrates and is fixedly mounted at the bottom of the motor output end; a plurality of fixed rods (7) are equidistantly and fixedly mounted at the non-spiral groove below the outer wall of the reciprocating screw (6); a conical feeder (8) is fixedly mounted at one end of the plurality of fixed rods (7) away from the center of the barrel (3); the outer wall of the conical feeder (8) is slidably mounted on the inner wall of the barrel (3); and the outer wall of the barrel (3) is equidistantly and fixedly mounted. A negative pressure fan (9) is fixedly installed at a certain distance from the drum (3); a filter plate (10) is fixedly installed inside the through hole of the drum (3); the filter plate (10) is located on the inner side of the negative pressure fan (9); a pull ring (11) is penetrated through the outer wall of the reciprocating screw rod (6) and is slidably installed thereon; a trapezoidal circular plate (12) is fixedly installed on the top of the pull ring (11); a plurality of inclined rods (13) are equidistantly fixedly installed on the outer wall of the pull ring (11); a heating assembly (14) is hingedly connected to the bottom of each of the inclined rods (13); The negative pressure fan (9) is connected to the internal through hole of the barrel (3); the trapezoidal circular plate (12) penetrates the inside and is slidably mounted on the outer wall of the reciprocating screw (6); the outer wall of the heating component (14) is slidably connected to the inner wall of the barrel (3); and a circulation device (4) is provided below the conical feeder (8) to ensure that the upper and lower airflows inside the barrel (3) are continuously and alternately replaced; The circulation device (4) comprises an annular track (41), a vertical rod (42) and a plurality of horizontal plates (43), wherein the bottom of the annular track (41) is fixedly mounted at the bottom edge of the inner wall of the drum (3), the bottom of the vertical rod (42) is slidably mounted inside the annular track (41), the top of the vertical rod (42) is fixedly mounted at the outer wall edge of the conical feeder (8), and a plurality of horizontal plates (43) are fixedly mounted on the outer wall surface of the vertical rod (42) at a side away from the center of the drum (3), and the horizontal plates (43) are evenly distributed on the outer wall of the vertical rod (42); The circulation device (4) further comprises an axial rod (44) and a swing plate (45), wherein the upper and lower ends of the axial rod (44) are fixedly mounted on the inner wall of the horizontal plate (43), the swing plate (45) penetrates the interior and is hinged to the outer wall surface of the axial rod (44), and a shielding device (5) is provided below the swing plate (45) for preventing the material from being discharged synchronously with the volatile harmful gas after being heated; The circulation device (4) further comprises a reset plate (46), a plurality of fixed plates (47), a hinged plate (48) and a plurality of abutment rods (49); the reset plate (46) is fixedly mounted between the outer wall of the vertical rod (42) and the outer wall of the swing plate (45); the plurality of fixed plates (47) are fixedly mounted on the outer wall of the horizontal plate (43); the hinged plate (48) is hingedly mounted on the side of the horizontal plate (43) close to the center of the barrel (3) on the side away from the center of the barrel (3); the hinged plate (48) is in contact with the outer wall of the swing plate (45) on the side close to the center of the barrel (3); the bottoms of the plurality of abutment rods (49) are fixedly mounted at equal distances on the inner bottom of the barrel (3); and the abutment rods (49) are located on the movement trajectory of the swing plate (45).

2. A dust-free feeding device for plastic processing according to claim 1, characterized in that: The shielding device (5) comprises an L-shaped plate (51), a transmission rod (52), a friction wheel (53) and a plurality of activated carbon plates (54); the top of the L-shaped plate (51) is fixedly mounted on the outer wall of the fixed plate (47) near the center of the barrel (3); the end of the transmission rod (52) away from the center of the barrel (3) is rotatably mounted on the inner wall of the L-shaped plate (51); a reciprocating spiral groove is formed on the outer wall of the end of the transmission rod (52) near the L-shaped plate (51); the friction wheel (53) penetrates the inside and is fixedly mounted on the outer wall of the transmission rod (52); the outer wall of the friction wheel (53) contacts the bottom of the inner wall of the barrel (3); and the plurality of activated carbon plates (54) are equidistantly and fixedly mounted on the outer wall surface of the transmission rod (52).

3. A dust-free feeding device for plastic processing according to claim 2, characterized in that: The shielding device (5) further comprises a sliding plate (55), a vertical plate (56), a plurality of baffles (57) and an angled plate (58); the interior of the sliding plate (55) penetrates through and is slidably mounted on the outer wall of the reciprocating spiral groove of the transmission rod (52); the interior of the vertical plate (56) penetrates through and is fixedly mounted on the outer wall of the sliding plate (55); a plurality of baffles (57) are slidably mounted on the inner wall of the vertical plate (56) via springs on the side away from the center of the barrel (3); the plurality of baffles (57) are symmetrically distributed with the transmission rod (52) as the center; a side of the angled plate (58) is fixedly mounted on the inner wall of the baffle (57) on the side away from the outer wall of the transmission rod (52); and the inclined surface of the angled plate (58) is located on the movement track of the activated carbon plate (54).

4. A dust-free feeding device for plastic processing according to claim 3, characterized in that: The shielding device (5) further comprises a penetrating rod (59) and a return spring (510); the penetrating rod (59) has one end away from the center of the barrel (3) fixedly mounted on the inner wall of the L-shaped plate (51); the penetrating rod (59) has one end close to the center of the barrel (3) and is movably mounted on the outer wall to penetrate the interior of the sliding plate (55); and the return spring (510) is fixedly mounted between the inner wall of the L-shaped plate (51) and the outer wall of the sliding plate (55).

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