A device for removing impurities from medical PVC plastic particles by blowing material.

Abstract

This invention belongs to the field of plastic particle impurity removal technology and discloses a blowing device for removing impurities from medical PVC plastic particles. The device includes a base, with a fixed cylinder and a composite processing component fixedly mounted on the top of the base. One end of the impurity removal cylinder is slidably sleeved inside the fixed cylinder, and a rotating air-blowing component is fixedly connected to one end of the composite processing component. This invention achieves rotary blowing and rotary material handling in a reduced space. On one hand, it utilizes the airflow from the rotary blowing to achieve dynamic impurity removal, and the rotating stirring part lifts the accumulated plastic particles to a high position for dispersion and blowing. On the other hand, it utilizes the gradually shrinking blowing space under dynamic lateral movement to concentrate the intensity of the blowing airflow, thoroughly completing the blowing and impurity removal of plastic particles in a continuously decreasing limited space. The actual blowing intensity is high, the dispersion blowing effect is good, greatly improving the blowing and impurity removal effect, and the usage effect is excellent.

Description

Technical Field

[0001] This invention belongs to the field of plastic particle impurity removal technology, specifically a blowing device for removing impurities from medical PVC plastic particles. Background Technology

[0002] PVC plastic particles, or polyvinyl chloride (PVC) plastic granules, are materials made from polyvinyl chloride resin as the main raw material, with the addition of appropriate amounts of anti-aging agents, modifiers and other additives, and processed through processes such as mixing, calendering and vacuum forming. They are widely used in the medical field. For the production and processing of medical PVC plastic particles, it is necessary to use a cleaning and blowing device to remove dust, fine impurities, lightweight impurities and any large particles that may be mixed in.

[0003] Existing medical PVC plastic particle cleaning and blowing devices utilize pressurized air to purge accumulated plastic particles during operation, typically combined with particle tumbling. However, in actual use, the limited volume of the purge space disrupts the concentration of pressurized air, resulting in some air being blown in vain, wasting a significant amount of air. Furthermore, the purge effect is poor in larger spaces, leading to prolonged overall cleaning time. Especially after some impurities have been removed, the remaining small amount of impurities is difficult to remove with concentrated airflow. While current purge processes incorporate a screening mechanism for enhanced cleaning, the different grades of material remain within the screening mechanism after screening, making separation difficult and resulting in mediocre cleaning performance. The inability to separate the screened material further contributes to the overall poor performance. Summary of the Invention

[0004] The purpose of this invention is to provide a device for removing impurities from medical PVC plastic particles by blowing them, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a device for removing impurities from medical PVC plastic particles by blowing material, comprising a base, a fixed cylinder and a composite processing component fixedly mounted on the top of the base, one end of a removal cylinder being slidably sleeved inside the fixed cylinder, a rotary blowing component being fixedly connected to one end of the composite processing component, the composite processing component controlling the rotary blowing component to rotate and inputting blowing airflow into the rotary blowing component, an agitator being slidably sleeved on the outer surface of the rotary blowing component, a telescopic mechanism being fixedly mounted on the outer side of the fixed cylinder, the telescopic mechanism controlling the removal cylinder to slide along the inside of the fixed cylinder, and a feeding mechanism being fixedly connected to the top of the fixed cylinder.

[0006] The impurity removal cylinder includes a movable cylinder, a first sieve plate, a second sieve plate, a dust removal sleeve, a fixed sleeve, and a feed inlet. The bottom of the movable cylinder has a first inlet and a second inlet. The first sieve plate, the second sieve plate, and the dust removal sleeve are arranged sequentially. A bypass groove is formed on the outer surface of the fixed sleeve, located between the first sieve plate and the second sieve plate.

[0007] The rotary air blowing assembly includes a rotating plate, and a plastic particle blowing space is formed between the impurity removal cylinder and the rotating plate. The blowing space is reduced by the lateral movement of the impurity removal cylinder.

[0008] Preferably, the composite processing component includes a support frame, a connecting frame, a motor, an air pump, and a guiding air duct. The support frame is fixedly installed on the top of the base by a fixing rod at the top of the base. The connecting frame is fixed to the end face of the support frame. The motor is fixed in the connecting frame. The air pump is fixed in the support frame. The guiding air duct is opened inside the support frame and the connecting frame, and the guiding air duct is connected to the air outlet of the air pump.

[0009] Preferably, the rotary air blowing assembly includes an air blowing pipe, an oblique hole, a rotating shaft, a retaining ring, and a communicating groove. The rotating plate is rotatably sleeved inside the movable cylinder. One end of the air blowing pipe is fixedly sleeved inside the rotating plate, and the other end is movably sleeved in the fixed sleeve. The oblique hole is opened on the outer surface of the air blowing pipe. The rotating shaft is fixedly connected to the side of the rotating plate and communicates with the air blowing pipe. The retaining ring is fixedly sleeved on the outer surface of the rotating shaft. The communicating groove is opened on the retaining ring and the rotating shaft.

[0010] Preferably, the rotating shaft is rotatably sleeved inside the connecting frame by a retaining ring, one end of the connecting groove is connected to the air passage, and the other end is connected to the air blowing pipe.

[0011] Preferably, the outer surface of the rotating plate is provided with grooves distributed around it. The stirring part includes a scraper, a connecting block, a sleeve rod and a spring. The scraper is slidably sleeved in the groove. The connecting block is fixedly connected to the side of the scraper. One end of the sleeve rod is fixedly connected to the connecting block and the other end moves through the rotating plate. The spring is fixedly connected between the connecting block and the rotating plate.

[0012] Preferably, the telescopic mechanism is an electric push rod, and the movable end of the telescopic mechanism is fixedly connected to the movable cylinder through a connecting plate. The feeding mechanism includes a storage frame and a bottom guide pipe. The top of the fixed cylinder is provided with a discharge port that communicates with the guide pipe. The discharge port is located on the moving path of the inlet. The telescopic mechanism is used to realize lateral movement control, which drives the movable cylinder to realize left and right reciprocating movement control. The feeding mechanism is connected to the moving inlet through the gap between the discharge port at the top of the fixed cylinder and the discharge port, and automatically replenishes materials when the connection is made.

[0013] Preferably, the No. 1 port and the No. 2 port are staggered with the No. 1 screen plate and the No. 2 screen plate, respectively. The No. 1 port is close to the No. 1 screen plate, and the No. 2 port is close to the No. 2 screen plate. One end of the movable cylinder is provided with an adaptive arc groove, which runs through the No. 1 port and the No. 2 port. By utilizing the arrangement of the No. 1 port and the No. 2 port with the No. 1 screen plate and the No. 2 screen plate, the independent separation of the screened materials by the No. 1 port and the No. 2 port is ensured. In addition, with the sealing arc plate that opens uniformly at the bottom, quick material discharge is achieved. The sealing arc plate can be driven to move laterally by an automatic pulling mechanism to achieve uniform material discharge after automatic action.

[0014] Preferably, a sealing arc plate is movably fitted inside the adapting arc groove, and the top surface of the sealing arc plate has two discharge ports, the distance between the two discharge ports being the same as the distance between port number one and port number two.

[0015] Preferably, the dust removal sleeve is threaded onto the end face of the movable cylinder, and the dust removal sleeve is provided with a dust removal cloth inside.

[0016] The beneficial effects of this invention are as follows:

[0017] 1. This invention utilizes a movable impurity removal cylinder in conjunction with a fixed-position rotating air blowing assembly. The rotating air blowing assembly, with its rotating air pipe and externally connected rotatable agitator, achieves rotating blowing and material removal within the reduced blowing space as the impurity removal cylinder moves laterally and the space between it and the rotating plate shrinks. On one hand, the rotating airflow dynamically removes impurities, while the rotating agitator lifts accumulated plastic particles to a high position for efficient dispersion. On the other hand, the gradually shrinking blowing space during dynamic lateral movement concentrates the intensity of the blowing airflow, thoroughly removing impurities from the plastic particles within the increasingly confined space. This results in high actual blowing intensity, excellent dispersion, and significantly improved impurity removal efficiency, leading to superior performance.

[0018] 2. This invention utilizes the relative movement of the impurity removal cylinder and its intermittent connection with the feeding mechanism. After the impurity removal cylinder moves and resets, it automatically connects to the bottom of the feeding mechanism and automatically feeds in a quantitative manner at a uniform speed. After feeding, as the impurity removal cylinder moves laterally, the distance between the rotating air blowing component and the No. 1 screen plate is continuously reduced. The reduced distance relatively pushes the remaining material after screening closer to the No. 1 opening. Combined with the opening of the sealing arc plate, automatic discharge is achieved after the movement. The actual material feeding and unloading are fast, avoiding the trouble of loading and unloading materials accumulated in the impurity removal space. It achieves fast automatic feeding and unloading and has good performance.

[0019] 3. This invention utilizes the arrangement of No. 1 and No. 2 sieve plates, along with corresponding No. 1 and No. 2 inlets, and a detachable dust collector sleeve at the outermost end. During actual air blowing for impurity removal, it achieves multi-stage sieving and dust removal. Furthermore, the horizontally arranged No. 1 and No. 2 sieve plates, along with corresponding No. 1 and No. 2 inlets, enable multi-stage sieving while also allowing for independent separation of the sieved material. This avoids the difficulty of separating and storing the sieved material after splitting, as is currently the case. The actual separation and sieving effect is excellent, the separation after sieving is simple, and dust removal is completed simultaneously with sieving, resulting in good performance. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the present invention;

[0021] Figure 2 This is a cross-sectional schematic diagram of the present invention;

[0022] Figure 3 This is a schematic diagram of the bottom of the impurity removal cylinder of the present invention;

[0023] Figure 4 This is a schematic diagram of the assembly of the rotary air blowing component and the stirring part of the present invention;

[0024] Figure 5 This is a cross-sectional schematic diagram of the composite processing component of the present invention;

[0025] Figure 6 This is a cross-sectional schematic diagram of the impurity removal cylinder of the present invention;

[0026] Figure 7 This is a schematic diagram of the stirring part of the present invention;

[0027] Figure 8 This is a cross-sectional schematic diagram of the rotary air blowing assembly of the present invention;

[0028] Figure 9 This is a schematic diagram of the sealing arc plate of the present invention.

[0029] In the diagram: 1. Base; 2. Fixed cylinder; 3. Feeding mechanism; 4. Composite processing component; 41. Support frame; 42. Connecting frame; 43. Motor; 44. Air pump; 45. Air passage; 5. Impurity removal cylinder; 51. Movable cylinder; 52. No. 1 sieve plate; 53. No. 2 sieve plate; 54. Dust removal sleeve; 55. Fixed sleeve; 56. Feed inlet; 6. Telescopic mechanism; 7. Rotary air blowing component; 71. Rotating plate; 72. Air blowing pipe; 73. Inclined hole; 74. Rotating shaft; 75. Snap ring; 76. Connecting groove; 8. Agitator; 81. Scraper; 82. Connecting block; 83. Sleeve rod; 84. Spring; 9. No. 1 port; 10. No. 2 port; 11. Adaptive arc groove; 12. Sealing arc plate. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. 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.

[0031] like Figures 1 to 9 As shown, this embodiment of the invention provides a device for removing impurities from medical PVC plastic particles by blowing material. It includes a base 1, with a fixed cylinder 2 and a composite processing component 4 fixedly mounted on the top of the base 1. One end of a removal cylinder 5 is slidably sleeved inside the fixed cylinder 2. A rotary blowing component 7 is fixedly connected to one end of the composite processing component 4. The composite processing component 4 controls the rotary blowing component 7 to rotate and inputs blowing airflow into the rotary blowing component 7. An agitator 8 is slidably sleeved on the outer surface of the rotary blowing component 7. A telescopic mechanism 6 is fixedly mounted on the outer side of the fixed cylinder 2. The telescopic mechanism 6 controls the removal cylinder 5 to slide along the inside of the fixed cylinder 2. A feeding mechanism 3 is fixedly connected to the top of the fixed cylinder 2.

[0032] The impurity removal cylinder 5 includes a movable cylinder 51, a first sieve plate 52, a second sieve plate 53, a dust removal sleeve 54, a fixed sleeve 55, and a feed inlet 56. The bottom of the movable cylinder 51 has a first inlet 9 and a second inlet 10. The first sieve plate 52, the second sieve plate 53, and the dust removal sleeve 54 are arranged sequentially. A bypass groove is provided on the outer surface of the fixed sleeve 55, located between the first sieve plate 52 and the second sieve plate 53.

[0033] The rotary air blowing assembly 7 includes a rotating plate 71, and a plastic particle blowing space is formed between the impurity removal cylinder 5 and the rotating plate 71. The blowing space is reduced by the lateral movement of the impurity removal cylinder 5.

[0034] Example: During use, the telescopic mechanism 6 is activated, pulling the impurity removal cylinder 5 laterally, keeping the feed inlet 56 below the feeding mechanism 3, and feeding the plastic particles to be removed into the feeding mechanism 3. The plastic particles fall into the interior of the movable cylinder 51. Then, the telescopic mechanism 6 is activated again, pushing the movable cylinder 51 laterally to the left. At the same time, the motor 43 and air pump 44 in the composite processing component 4 are activated. The motor 43 drives the fixed rotating shaft 74 to rotate through the output shaft, thereby causing the rotating plate 71 to rotate, which in turn causes the rotating air blowing component 7 to rotate and the air blowing pipe 72 to rotate, and also causes the outer side to slide and fit. The agitator 8 rotates, and simultaneously the air pump 44 inputs pressurized air into the air blowing pipe 72 through the air passage 45 and the connecting groove 76. As the air blowing pipe 72 rotates, pressurized air is blown out along the inclined hole 73. The pressurized air acts on the material in the movable cylinder 51. At the same time, during the rotation, the scraper 81 in the agitator 8 rotates along the inner wall of the movable cylinder 51, pushing the accumulated material to the top and scattering it. With the blowing of the inclined pressurized air, dust, fine impurities, and broken plastic particles are carried by the wind through the first screen plate 52, and the dust continues to pass through the second screen plate 53 and enters the dust collection sleeve 54. In the process, dust is filtered on the dust collector sleeve 54, and air is blown out. Fine impurities and broken plastic particles are filtered between the second sieve plate 53 and the first sieve plate 52. As the movable cylinder 51 continues to move laterally, the first sieve plate 52 pushes the rotating agitator 8, which in turn pushes the scraper 81 to move laterally. As the scraper 81 rotates, it slides along the slot, causing the spring 84 to stretch. The gap between the first sieve plate 52 and the rotating plate 71 gradually decreases. The fixed sleeve 55 moves laterally and gradually seals the sets of inclined holes 73 on the air blowing pipe 72. The air pressure of the remaining inclined holes 73 increases, reducing the amount of dust and fine impurities in the reduced blowing space. As the broken plastic particles are gradually blown out, the impurities are removed. After the movable cylinder 51 moves to its limit position, it pulls the sealing arc plate 12, so that the discharge port on the sealing arc plate 12 is connected to the corresponding port 9 and port 10. The plastic particles that have been blown out and cleaned fall out along port 9 and are collected, while the broken and impurity particles fall out along port 10 and are collected, thus completing the separation and collection. Then the movable cylinder 51 is pushed in the opposite direction. When the feed port 56 moves horizontally and moves to the bottom of the feeding mechanism 3 again, it is connected through the discharge port at the top of the fixed cylinder 2, thus realizing the automatic downward feeding of the material put into the feeding mechanism 3.

[0035] First, by utilizing the movable impurity removal cylinder 5 in conjunction with the fixed-position rotating air blowing assembly 7, and utilizing the rotating air blowing pipe 72 in the rotating air blowing assembly 7 and the rotatable stirring part 8 connected to the outside, the impurity removal cylinder 5 moves laterally and reduces the blowing space between itself and the rotating plate 71, thereby achieving rotating blowing and rotating material feeding in the reduced space. On the one hand, the airflow of the rotating blowing achieves dynamic blowing and impurity removal, and the rotating stirring part 8 lifts the accumulated plastic particles to a high place and throws them, achieving thorough and efficient dispersion blowing. On the other hand, by utilizing the gradually shrinking blowing space under dynamic lateral movement, the intensity of the blowing airflow is concentrated, and the blowing and impurity removal of plastic particles is thoroughly completed in the continuously shrinking limited space. The actual blowing intensity is high, the dispersion blowing effect is good, and the blowing and impurity removal effect is greatly improved, resulting in good performance.

[0036] Furthermore, by utilizing the relative movement of the impurity removal cylinder 5 and its intermittent connection with the feeding mechanism 3, the impurity removal cylinder 5 automatically connects to the bottom of the feeding mechanism 3 after its movement and reset, and automatically and quantitatively feeds the material under uniform speed. After feeding, as the impurity removal cylinder 5 moves laterally, the distance between the rotating air blowing component 7 and the first screen plate 52 is continuously reduced. The reduced distance relatively pushes the remaining material after screening closer to the first port 9, and in conjunction with the opened sealing arc plate 12, automatic discharge is achieved after the movement. The actual material feeding and unloading are fast, avoiding the trouble of loading and unloading materials accumulated in the impurity removal space, achieving fast automatic feeding and unloading, and the use effect is good.

[0037] On the other hand, by utilizing the arrangement of the No. 1 sieve plate 52 and the No. 2 sieve plate 53, in conjunction with the corresponding No. 1 port 9 and No. 2 port 10, and utilizing the outermost detachable dust removal sleeve 54, multi-stage screening and dust removal are achieved during the actual air blowing and impurity removal process. Furthermore, in conjunction with the horizontally arranged No. 1 sieve plate 52 and the No. 2 sieve plate 53, and the corresponding No. 1 port 9 and No. 2 port 10, multi-stage screening is achieved while also allowing for independent separation of the screened material. This avoids the current situation where the screened material is difficult to separate and store from the screening mechanism after splitting. The actual separation and screening effect is good, the separation after screening is simple, and dust removal is completed simultaneously with screening.

[0038] The composite processing component 4 includes a support frame 41, a connecting frame 42, a motor 43, an air pump 44, and a guiding air passage 45. The support frame 41 is fixedly installed on the top of the base 1 by a fixing rod on the top of the base 1. The connecting frame 42 is fixed to the end face of the support frame 41. The motor 43 is fixed in the connecting frame 42. The air pump 44 is fixed in the support frame 41. The guiding air passage 45 is opened inside the support frame 41 and the connecting frame 42, and the guiding air passage 45 is connected to the air outlet of the air pump 44.

[0039] By utilizing the composite processing component 4 to provide rotational power and pressurized air respectively, the motor 43 drives the rotation of the rotary air blowing component 7, the air pump 44 provides pressurized air, and the air passage 45 guides the flow of pressurized air, ensuring that pressurized air enters the interior of the rotary air blowing component 7. The connecting bracket 42 is also used to support the rotating shaft 74 and, together with the retaining ring 75, maintains stable rotational movement.

[0040] The rotary air blowing assembly 7 includes an air blowing pipe 72, an oblique hole 73, a rotating shaft 74, a retaining ring 75, and a connecting groove 76. The rotating plate 71 is rotatably sleeved inside the movable cylinder 51. One end of the air blowing pipe 72 is fixedly sleeved inside the rotating plate 71, and the other end is movably sleeved in the fixed sleeve 55. The oblique hole 73 is opened on the outer surface of the air blowing pipe 72. The rotating shaft 74 is fixedly connected to the side of the rotating plate 71 and communicates with the air blowing pipe 72. The retaining ring 75 is fixedly sleeved on the outer surface of the rotating shaft 74. The connecting groove 76 is opened on the retaining ring 75 and the rotating shaft 74.

[0041] The rotating air blowing assembly 7 performs air purging to remove impurities and blow away impurities. The inclined holes 73 arranged in the air blowing pipe 72 can be directed toward the screening area for purging. It provides sufficient lateral airflow to guide impurities and dust to be laterally purged and separated. The airflow in the vertical plane further disturbs the accumulated material, improving the material dispersion effect. The connecting groove 76 is used to connect the guiding air passage 45 and maintain continuous connection during rotation.

[0042] The rotating shaft 74 is rotatably sleeved inside the connecting frame 42 via a retaining ring 75. One end of the connecting groove 76 is connected to the air passage 45, and the other end is connected to the air blowing pipe 72.

[0043] By utilizing the rotating engagement of the retaining ring 75, rotational stability is maintained, and lateral deviation is avoided.

[0044] The outer surface of the rotating plate 71 is provided with grooves distributed around it. The stirring part 8 includes a scraper 81, a connecting block 82, a sleeve rod 83 and a spring 84. The scraper 81 is slidably sleeved in the groove. The connecting block 82 is fixedly connected to the side of the scraper 81. One end of the sleeve rod 83 is fixedly connected to the connecting block 82, and the other end moves through the rotating plate 71. The spring 84 is fixedly connected between the connecting block 82 and the rotating plate 71.

[0045] By utilizing the slot to assemble the slidable agitator 8, the agitator 8 is driven to rotate when the rotating plate 71 is rotating. The agitator 8 rotates and moves along the inner wall of the movable cylinder 51, which pushes and lifts the material in the movable cylinder 51 and throws it at the highest position, thereby achieving the agitation and throwing effect, improving the material dispersion effect. In conjunction with the blowing air, it provides the impurity removal effect. In addition, with the elastic effect of the spring 84, the slidable scraper 81 can move laterally. Under the pressure of external force, it can move laterally to reduce the agitation space.

[0046] The telescopic mechanism 6 is an electric push rod. The movable end of the telescopic mechanism 6 is fixedly connected to the movable cylinder 51 through a connecting plate. The feeding mechanism 3 includes a storage frame and a bottom guide pipe. The top of the fixed cylinder 2 is provided with a discharge port that communicates with the guide pipe. The discharge port is located on the moving path of the feed port 56.

[0047] The telescopic mechanism 6 is used to achieve lateral movement control, which drives the movable cylinder 51 to achieve left and right reciprocating movement control. The feeding mechanism 3 is connected to the feeding port 56 at the top of the fixed cylinder 2, and automatically replenishes materials when connected.

[0048] Among them, No. 1 port 9 and No. 2 port 10 are staggered with No. 1 screen plate 52 and No. 2 screen plate 53 respectively. No. 1 port 9 is close to No. 1 screen plate 52, and No. 2 port 10 is close to No. 2 screen plate 53. One end of the movable cylinder 51 is provided with an adapting arc groove 11, which passes through No. 1 port 9 and No. 2 port 10. A sealing arc plate 12 is movably sleeved inside the adapting arc groove 11. The top surface of the sealing arc plate 12 is provided with a discharge port. There are two discharge ports, and the distance between the two discharge ports is the same as the distance between No. 1 port 9 and No. 2 port 10.

[0049] By utilizing the arrangement of No. 1 port 9 and No. 2 port 10 with No. 1 screen plate 52 and No. 2 screen plate 53, it is ensured that No. 1 port 9 and No. 2 port 10 can independently separate the screened materials. In addition, with the bottom sealing arc plate 12 opening uniformly, quick material discharge can be achieved. The sealing arc plate 12 can be driven to move laterally by an automatic pulling mechanism to achieve uniform material discharge after automatic action.

[0050] The dust removal sleeve 54 is threaded onto the end face of the movable cylinder 51, and the dust removal sleeve 54 is equipped with a dust removal cloth inside.

[0051] The detachable dust cover 54 is used to filter and collect dust, prevent the air quality in the cleaning environment from deteriorating, and reduce dust.

[0052] The working principle and usage process of this invention are as follows: First, activate the telescopic mechanism 6 to pull the impurity removal cylinder 5 laterally, keeping the feed inlet 56 below the feeding mechanism 3. Then, feed the plastic particles to be removed into the feeding mechanism 3. The plastic particles fall into the interior of the movable cylinder 51. Next, continue activating the telescopic mechanism 6 to push the movable cylinder 51 laterally to the left. Simultaneously, activate the motor 43 and air pump 44 in the composite processing assembly 4. The motor 43 drives the fixed rotating shaft 74 to rotate via its output shaft, thereby causing the rotating plate 71 to rotate, which in turn causes the rotating air blowing assembly 7 to rotate, and the air blowing pipe 72 to rotate, thus driving... The agitator 8, which is slidably connected to the outer side, rotates. Simultaneously, the air pump 44 inputs pressurized air into the air blowing pipe 72 through the air passage 45 and the connecting groove 76. This causes the air blowing pipe 72 to rotate while simultaneously blowing pressurized air out along the inclined hole 73. The pressurized air acts on the material in the movable cylinder 51. During the rotation, the scraper 81 in the agitator 8 rotates along the inner wall of the movable cylinder 51, pushing the accumulated material upwards and scattering it. Combined with the blowing of the inclined pressurized air, dust, fine impurities, and broken plastic particles are forced through the first sieve plate 52 by the airflow, and dust continues to pass through the second sieve plate 53 and enters the... In the dust collector sleeve 54, dust is filtered on the dust collector sleeve 54 and blown out by the air. Fine impurities and broken plastic particles are filtered between the second screen plate 53 and the first screen plate 52. As the movable cylinder 51 continues to move laterally, the first screen plate 52 pushes the rotating agitator 8, which in turn pushes the scraper 81 to move laterally. As the scraper 81 rotates, it slides along the slot, causing the spring 84 to stretch. The gap between the first screen plate 52 and the rotating plate 71 gradually decreases. The fixed sleeve 55 moves laterally and gradually seals the sets of inclined holes 73 on the air blowing pipe 72. The air pressure of the remaining inclined holes 73 increases, and the dust and fine particles in the reduced blowing space are further filtered out. Impurities and broken plastic particles are gradually blown out, completing the impurity removal. After the movable cylinder 51 moves to its limit position, it pulls the sealing arc plate 12, so that the discharge port on the sealing arc plate 12 is connected to the corresponding port 9 and port 10. The plastic particles that have been blown out and cleaned fall out along port 9 and are collected, while the broken material and impurity particles fall out along port 10 and are collected, completing the separation and collection. Then, the movable cylinder 51 is pushed in the opposite direction. When the feed port 56 moves laterally and moves to the bottom of the feeding mechanism 3 again, it is connected through the discharge port at the top of the fixed cylinder 2, realizing the automatic downward feeding of the material put into the feeding mechanism 3.

[0053] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for removing impurities from medical PVC plastic particles by blowing material, comprising a base (1), characterized in that: The top of the base (1) is fixedly provided with a fixed cylinder (2) and a composite processing component (4). One end of a cleaning cylinder (5) is slidably sleeved inside the fixed cylinder (2). One end of the composite processing component (4) is fixedly connected to a rotary air blowing component (7). The composite processing component (4) controls the rotary air blowing component (7) to rotate and inputs airflow into the rotary air blowing component (7). An agitator (8) is slidably sleeved on the outer surface of the rotary air blowing component (7). A telescopic mechanism (6) is fixedly provided on the outer side of the fixed cylinder (2). The telescopic mechanism (6) controls the cleaning cylinder (5) to slide along the inside of the fixed cylinder (2). The top of the fixed cylinder (2) is fixedly connected to a feeding mechanism (3). The impurity removal cylinder (5) includes a movable cylinder (51), a first sieve plate (52), a second sieve plate (53), a dust removal sleeve (54), a fixed sleeve (55), and a feed inlet (56). The bottom of the movable cylinder (51) has a first inlet (9) and a second inlet (10). The first sieve plate (52), the second sieve plate (53), and the dust removal sleeve (54) are arranged in sequence. The outer surface of the fixed sleeve (55) has a bypass groove located between the first sieve plate (52) and the second sieve plate (53). The rotary air blowing assembly (7) includes a rotating plate (71), and a plastic particle blowing space is formed between the impurity removal cylinder (5) and the rotating plate (71), and the blowing space is reduced by the lateral movement of the impurity removal cylinder (5).

2. The impurity removal blowing device for medical PVC plastic particles according to claim 1, characterized in that: The composite processing component (4) includes a support frame (41), a connecting frame (42), a motor (43), an air pump (44), and a guiding air passage (45). The support frame (41) is fixedly installed on the top of the base (1) by a fixing rod on the top of the base (1). The connecting frame (42) is fixed on the end face of the support frame (41). The motor (43) is fixed in the connecting frame (42). The air pump (44) is fixed in the support frame (41). The guiding air passage (45) is opened inside the support frame (41) and the connecting frame (42), and the guiding air passage (45) is connected to the air outlet of the air pump (44).

3. The impurity removal blowing device for medical PVC plastic particles according to claim 2, characterized in that: The rotating air blowing assembly (7) includes an air blowing pipe (72), an oblique hole (73), a rotating shaft (74), a retaining ring (75), and a connecting groove (76). The rotating plate (71) is rotatably sleeved inside the movable cylinder (51). One end of the air blowing pipe (72) is fixedly sleeved inside the rotating plate (71), and the other end is movably sleeved in the fixed sleeve (55). The oblique hole (73) is opened on the outer surface of the air blowing pipe (72). The rotating shaft (74) is fixedly connected to the side of the rotating plate (71) and communicates with the air blowing pipe (72). The retaining ring (75) is fixedly sleeved on the outer surface of the rotating shaft (74). The connecting groove (76) is opened on the retaining ring (75) and the rotating shaft (74).

4. The impurity removal blowing device for medical PVC plastic particles according to claim 3, characterized in that: The rotating shaft (74) is rotatably sleeved inside the connecting frame (42) by a retaining ring (75). One end of the connecting groove (76) is connected to the air passage (45), and the other end is connected to the air blowing pipe (72).

5. The impurity removal blowing device for medical PVC plastic particles according to claim 4, characterized in that: The outer surface of the rotating plate (71) is provided with grooves distributed around it. The stirring part (8) includes a scraper (81), a connecting block (82), a sleeve rod (83) and a spring (84). The scraper (81) is slidably sleeved in the groove. The connecting block (82) is fixedly connected to the side of the scraper (81). One end of the sleeve rod (83) is fixedly connected to the connecting block (82), and the other end moves through the rotating plate (71). The spring (84) is fixedly connected between the connecting block (82) and the rotating plate (71).

6. The impurity removal blowing device for medical PVC plastic particles according to claim 5, characterized in that: The telescopic mechanism (6) is an electric push rod. The movable end of the telescopic mechanism (6) is fixedly connected to the movable cylinder (51) through a connecting plate. The feeding mechanism (3) includes a storage frame and a bottom guide pipe. The top of the fixed cylinder (2) is provided with a discharge port that communicates with the guide pipe. The discharge port is located on the moving path of the feed inlet (56).

7. The impurity removal blowing device for medical PVC plastic particles according to claim 6, characterized in that: The No. 1 port (9) and the No. 2 port (10) are staggered with the No. 1 sieve plate (52) and the No. 2 sieve plate (53), respectively. The No. 1 port (9) is close to the No. 1 sieve plate (52), and the No. 2 port (10) is close to the No. 2 sieve plate (53). One end of the movable cylinder (51) is provided with an adaptation arc groove (11), which penetrates the No. 1 port (9) and the No. 2 port (10).

8. The impurity removal blowing device for medical PVC plastic particles according to claim 7, characterized in that: The internal fitting arc groove (11) is fitted with a sealing arc plate (12). The top surface of the sealing arc plate (12) is provided with a discharge port. There are two discharge ports, and the distance between the two discharge ports is the same as the distance between port 1 (9) and port 2 (10).

9. The impurity removal blowing device for medical PVC plastic particles according to claim 8, characterized in that: The dust removal sleeve (54) is threaded onto the end face of the movable cylinder (51), and the dust removal sleeve (54) is provided with a dust removal cloth inside.

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