Medical PVC granule purifying and screening device

Abstract

The invention belongs to the technical field of screening devices, and discloses a medical PVC granule purifying and screening device which comprises a screening shell, a vibrating assembly is fixedly mounted at the bottom of an inner cavity of the screening shell, a rotating assembly and a feeding port are fixedly mounted at the top of the screening shell, and an air drying assembly is fixedly mounted at the bottom of one side of the outer wall of the screening shell. An impurity assembly is fixedly mounted at the lower end of the side, away from the air drying assembly, of the outer wall of the screening shell. Through cooperation of structures such as the vibration assembly and the rotating assembly, the effect of rapidly screening PVC granules according to the size is achieved, a first driving motor drives a connecting block to rotate, the connecting block drives a first connecting column and a connecting piece to rotate, stirring blades on the surface of a rotating rod scrape the PVC granules, and the PVC granules can be rapidly screened according to the size of the PVC granules. And the PVC granules quickly fall off from the surfaces of the first sieve plate and the second sieve plate, so that the PVC granule separation time is shortened, the working efficiency is improved, and the labor consumption is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of screening devices, and specifically relates to a purification and screening device for medical PVC pellets. Background Art

[0002] Medical PVC pellets are made by extrusion and then pelletizing. The mixed raw materials need to be processed by an extruder. The extruder heats and melts the raw materials and then extrudes them into a shape through an extrusion screw. After that, they are plasticized by cold water and pelletized after plasticization. During the production of PVC pellets, the particle sizes are sometimes different, and different-sized PVC particles also have different applications. Therefore, it is necessary to screen them. When purifying and screening existing PVC pellets, generally, the cut pellets are directly put into the screening device to screen the PVC pellets. However, since the surface of the PVC pellets has moisture when they are plasticized by cold water and cannot be air-dried, the particles are likely to accumulate together during separation. As a result, it is necessary to manually hold tools to separate the PVC pellets on the surface of the sieve plate, which prolongs the separation time of the PVC pellets, reduces work efficiency, and consumes manpower. Therefore, it needs to be improved. Summary of the Invention

[0003] To solve the problem in the above background art that the PVC pellets cannot be air-dried, resulting in the particles being likely to accumulate together during separation, so that it is necessary to manually hold tools to separate the PVC pellets on the surface of the sieve plate, which prolongs the separation time of the PVC pellets, reduces work efficiency, and consumes manpower, the invention provides a purification and screening device for medical PVC pellets.

[0004] To achieve the above object, the invention provides the following technical solution: A purification and screening device for medical PVC pellets, including a screening housing. A vibration assembly is fixedly installed at the bottom of the inner cavity of the screening housing. A rotation assembly and a feed inlet are fixedly installed at the top of the screening housing. An air-drying assembly is fixedly installed at the bottom of one side of the outer wall of the screening housing. An impurity assembly is fixedly installed at the lower end of the outer wall of the screening housing away from the air-drying assembly. A first sieve plate is movably connected to the lower end of the inner cavity of the screening housing. A connecting rod is fixedly installed at the top of the first sieve plate. A second sieve plate is fixedly installed at one end of the connecting rod away from the first sieve plate. A spring telescopic rod is fixedly installed at the top of the second sieve plate. A first discharge port and a second discharge port are fixedly installed in sequence at the upper end of the outer side of the screening housing near the impurity assembly.

[0005] Preferably, the vibration assembly includes a first drive motor fixedly installed at the bottom of the inner cavity of the screening housing. A connecting block is fixedly installed at the output end of the first drive motor. A first connecting column is fixedly installed at one end of the connecting block away from the first drive motor. A connecting member is fixedly installed at one end of the first connecting column away from the connecting block. A second connecting column is fixedly installed at the upper end of the connecting member. Moving units are fixedly connected to both ends of the second connecting column. Fixed columns and fixed rods are fixedly installed at the bottom of the first sieve plate.

[0006] Preferably, the rotating assembly includes a second drive motor fixedly installed at the top of the screening housing. A rotating rod is fixedly installed at the output end of the second drive motor; The air-drying assembly includes an air collecting box fixedly installed on one side of the screening housing. An air outlet is fixedly installed at the top of the air collecting box. A fan is fixedly installed on the side of the air collecting box away from the screening housing.

[0007] Preferably, the impurity assembly includes a support plate and an impurity plate. The support plate is fixedly connected to the screening housing. A impurity collecting box is fixedly installed at the top of the support plate. An impurity outlet is fixedly installed on the screening housing near the impurity collecting box.

[0008] Preferably, one end of the spring telescopic rod away from the second sieve plate is fixedly connected to the screening housing. The holes on the surface of the second sieve plate are larger than those on the surface of the first sieve plate.

[0009] Preferably, stirring blades are arranged on the outer side of the rotating rod, and one side of the stirring blade is beveled.

[0010] Preferably, a sliding groove is formed at the top of the support plate, and a sliding block is arranged at the bottom of the impurity collecting box.

[0011] Preferably, the air outlet consists of a longitudinal pipe and two transverse pipes, and the two transverse pipes extend into the inner cavity of the screening housing. A heating wire is arranged on the inner wall of the air collecting box.

[0012] Preferably, a small cylindrical barrel is arranged at the top of the moving unit, and the diameter value of the fixed column is greater than the diameter value of the small cylindrical barrel arranged at the top of the moving unit.

[0013] Preferably, the connecting member is composed of two cylinders and a connecting bar, and the connecting bar is installed between the two cylinders.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: Through the cooperation of structures such as a vibration component and a rotation component, the present invention realizes the effect of quickly screening PVC pellets according to their sizes. The first driving motor drives the connection block to rotate, the connection block drives the first connecting column and the connecting member to rotate, the connecting member drives the second connecting column and the moving unit to move. When the moving unit moves upward, the bottom of the fixed column abuts against the moving unit, causing the first sieve plate and the second sieve plate to move upward, thereby vibrating and screening the PVC pellets in the inner cavity of the screening housing. The second driving motor drives the rotating rod to rotate, and the stirring blades on the surface of the rotating rod scrape the PVC pellets, causing the PVC pellets to quickly fall from the surfaces of the first sieve plate and the second sieve plate, achieving the reduction of the separation time of PVC pellets, improving the working efficiency and reducing the consumption of manpower.

[0015] Through the cooperation of structures such as a rotating rod and an air outlet, the present invention realizes the effect that PVC pellets will not accumulate together during separation, accelerating the powder screening speed. The fan blows the hot air in the air collecting box into the inner cavity of the screening housing through the air outlet, thereby drying the moisture on the surface of the PVC pellets. The second driving motor drives the rotating rod to rotate, and the stirring blades on the surface of the rotating rod scrape the PVC pellets, causing the PVC pellets to quickly fall from the surfaces of the first sieve plate and the second sieve plate, achieving the effect of accelerating the screening speed and reducing the separation time of PVC pellets. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the present invention; Figure 2 is a schematic front sectional structural diagram of the present invention; Figure 3 is a schematic diagram of the structural cooperation relationship between the rotation component and the air drying component of the present invention; Figure 4 is Figure 3 a partial enlarged structural diagram at A in Figure 5 is Figure 3 a partial enlarged structural diagram at B in Figure 6 is a schematic diagram of the structural cooperation relationship between the support plate and the impurity collecting box of the present invention.

[0017] In the figure: 1. Screening housing; 2. Vibration assembly; 21. First drive motor; 22. Connecting block; 23. First connecting column; 24. Connecting piece; 25. Second connecting column; 26. Moving unit; 27. Fixed column; 28. Fixed rod; 3. Rotating assembly; 31. Second drive motor; 32. Rotating rod; 4. Air-drying assembly; 41. Air-collecting box; 42. Air outlet; 43. Fan; 5. Feed inlet; 6. Impurity assembly; 61. Support plate; 62. Impurity-collecting box; 63. Impurity plate; 64. Impurity outlet; 7. First sieve plate; 8. Second sieve plate; 9. First discharge port; 10. Second discharge port; 11. Spring telescopic rod; 12. Connecting rod. Detailed implementation manner

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0019] As Figures 1 to 6 shown, the present invention provides a medical PVC pellet purification and screening device, including a screening housing 1. A vibration assembly 2 is fixedly installed at the bottom of the inner cavity of the screening housing 1. A rotating assembly 3 and a feed inlet 5 are fixedly installed at the top of the screening housing 1. An air-drying assembly 4 is fixedly installed at the bottom of one side of the outer wall of the screening housing 1. An impurity assembly 6 is fixedly installed at the lower end of the outer wall of the screening housing 1 away from the air-drying assembly 4. A first sieve plate 7 is movably connected to the lower end of the inner cavity of the screening housing 1. A connecting rod 12 is fixedly installed at the top of the first sieve plate 7. A second sieve plate 8 is fixedly installed at the end of the connecting rod 12 away from the first sieve plate 7. A spring telescopic rod 11 is fixedly installed at the top of the second sieve plate 8. A first discharge port 9 and a second discharge port 10 are fixedly installed in sequence at the upper end of the outer side of the screening housing 1 close to the impurity assembly 6.

[0020] Adopting the above solution: Through the cooperation of the vibration component 2 and the rotation component 3, the first drive motor 21 drives the connection block 22 to rotate. The connection block 22 drives the first connection column 23 and the connecting member 24 to rotate. The connecting member 24 drives the second connection column 25 and the moving unit 26 to move. When the moving unit 26 moves upward, the bottom of the fixed column 27 abuts against the moving unit 26, causing the first sieve plate 7 and the second sieve plate 8 to move upward, thereby vibrating and screening the PVC pellets in the inner cavity of the screening housing 1. The larger PVC pellets remain on the surface of the second sieve plate 8, and the smaller impurity particles in the PVC pellets and the PVC pellets fall onto the surface of the first sieve plate 7. The impurities on the first sieve plate 7 fall onto the surface of the impurity plate 63, and the impurities on the surface of the impurity plate 63 fall into the inner cavity of the impurity collection box 62 through the impurity outlet 64. The second drive motor 31 drives the rotating rod 32 to rotate, and the stirring blades on the surface of the rotating rod 32 scrape the PVC pellets, causing the PVC pellets to quickly fall from the surfaces of the first sieve plate 7 and the second sieve plate 8.

[0021] As Figure 2 , Figure 3 shown, the vibration component 2 includes a first drive motor 21, which is fixedly installed at the bottom of the inner cavity of the screening housing 1. The output end of the first drive motor 21 is fixedly installed with a connection block 22. One end of the connection block 22 away from the first drive motor 21 is fixedly installed with a first connection column 23. One end of the first connection column 23 away from the connection block 22 is fixedly installed with a connecting member 24. The upper end of the connecting member 24 is fixedly installed with a second connection column 25. Both ends of the second connection column 25 are fixedly connected with a moving unit 26. The bottom of the first sieve plate 7 is fixedly installed with a fixed column 27 and a fixed rod 28. The rotation component 3 includes a second drive motor 31, which is fixedly installed at the top of the screening housing 1. The output end of the second drive motor 31 is fixedly installed with a rotating rod 32. The air drying component 4 includes an air collection box 41, which is fixedly installed on one side of the screening housing 1. The top of the air collection box 41 is fixedly installed with an air outlet 42. A fan 43 is fixedly installed on the side of the air collection box 41 away from the screening housing 1. The impurity component 6 includes a support plate 61 and an impurity plate 63. The support plate 61 is fixedly connected with the screening housing 1. The top of the support plate 61 is fixedly installed with an impurity collection box 62. An impurity outlet 64 is fixedly installed at the position of the screening housing 1 close to the impurity collection box 62.

[0022] Adopting the above solution: Through the cooperation of the first driving motor 21 and the connecting block 22, the first driving motor 21 drives the connecting block 22 to rotate. The connecting block 22 drives the first connecting column 23 and the connecting member 24 to rotate. The connecting member 24 drives the second connecting column 25 and the moving unit 26 to move. When the moving unit 26 moves upward, the bottom of the fixed column 27 abuts against the moving unit 26, so as to screen the size of the PVC pellets. Through the cooperation of the second driving motor 31 and the rotating rod 32, the second driving motor 31 drives the rotating rod 32 to rotate. The rotating rod 32 scrapes the PVC pellets on the surfaces of the first sieve plate 7 and the second sieve plate 8, so that the PVC pellets quickly fall from the surfaces of the first sieve plate 7 and the second sieve plate 8. Through the cooperation of the air collecting box 41 and the air outlet 42, the fan 43 blows the hot air in the air collecting box 41 into the inner cavity of the screening housing 1 through the air outlet 42, thereby drying the moisture on the surface of the PVC pellets, so that the PVC pellets will not pile up together during separation, and the powder screening speed is increased. Through the cooperation of the support plate 61 and the impurity collecting box 62, the PVC pellets with smaller impurity particles in the PVC pellets fall onto the surface of the first sieve plate 7. The impurities fall from the first sieve plate 7 onto the surface of the impurity plate 63. The impurities on the surface of the impurity plate 63 fall into the inner cavity of the impurity collecting box 62 through the impurity outlet 64.

[0023] As Figure 2 , Figure 5 and Figure 6 shown, one end of the spring telescopic rod 11 far from the second sieve plate 8 is fixedly connected to the screening housing 1. The holes on the surface of the second sieve plate 8 are larger than the holes on the surface of the first sieve plate 7. There are stirring blades arranged on the outer side of the rotating rod 32, and one side of the stirring blade is in an inclined plane. A sliding groove is opened at the top of the support plate 61. A sliding block is arranged at the bottom of the impurity collecting box 62. The air outlet 42 is composed of a longitudinal pipe and two transverse pipes, and the two transverse pipes extend into the inner cavity of the screening housing 1. A heating wire is arranged on the inner wall of the air collecting box 41. A small cylindrical barrel is arranged at the top of the moving unit 26. The diameter value of the fixed column 27 is larger than the diameter value of the small cylindrical barrel arranged at the top of the moving unit 26. The connecting member 24 is composed of two cylinders and a connecting bar, and the connecting bar is installed between the two cylinders.

[0024] Adopting the above solution: Through the cooperation of the screening housing 1 and the spring telescopic rod 11, the spring telescopic rod 11 is fixedly connected to the screening housing 1, thereby limiting the second sieve plate 8, making the up and down movement of the first sieve plate 7 and the second sieve plate 8 more stable. The holes on the surface of the second sieve plate 8 are larger than those on the surface of the first sieve plate 7, so that the larger PVC pellets remain on the surface of the second sieve plate 8, and the smaller PVC pellets fall onto the surface of the first sieve plate 7. Through the design of the rotating rod 32, the inclined surface design enables better pushing of the PVC pellets, thereby accelerating the screening speed. Through the cooperation of the support plate 61 and the impurity collection box 62, and the cooperation of the chute and the slider, when there are more impurities in the impurity collection box 62, pulling the impurity collection box 62, the chute limits the slider, making the movement more stable. Through the design of the air collection box 41 and the air outlet 42, and the design of the heating wire, the air blown into the inner cavity of the screening housing 1 is hot air, thereby quickly drying the moisture on the surface of the PVC pellets, and thus making the screening speed faster. Through the design of the connecting piece 24, the connecting strip is installed between the two cylinders, so that the connecting piece 24 drives the second connecting column 25 and the moving unit 26 to move. When the moving unit 26 moves upward, the bottom of the fixed column 27 abuts against the moving unit 26, making the first sieve plate 7 and the second sieve plate 8 move upward, thereby vibrating and screening the PVC pellets in the inner cavity of the screening housing 1, and thus quickly screening the PVC pellets.

[0025] The working principle and usage process of the present invention: In use, PVC pellets are added from the feed inlet 5. The first drive motor 21 and the second drive motor 31 are started. The fan 43 blows the hot air in the air collecting box 41 into the inner cavity of the screening housing 1 through the air outlet 42, thereby drying the moisture on the surface of the PVC pellets, so that the PVC pellets will not accumulate together during separation, accelerating the powder screening speed. The first drive motor 21 drives the connecting block 22 to rotate, the connecting block 22 drives the first connecting column 23 and the connecting member 24 to rotate, the connecting member 24 drives the second connecting column 25 and the moving unit 26 to move. When the moving unit 26 moves upward, the bottom of the fixed column 27 abuts against the moving unit 26, causing the first sieve plate 7 and the second sieve plate 8 to move upward, thereby vibrating and screening the PVC pellets in the inner cavity of the screening housing 1, so that the PVC pellets with larger particles remain on the surface of the second sieve plate 8, and the PVC pellets with smaller impurity particles in the PVC pellets fall onto the surface of the first sieve plate 7. The impurities on the first sieve plate 7 fall onto the surface of the impurity plate 63, and the impurities on the surface of the impurity plate 63 fall into the inner cavity of the impurity collecting box 62 through the impurity outlet 64. The second drive motor 31 drives the rotating rod 32 to rotate, and the stirring blades on the surface of the rotating rod 32 scrape the PVC pellets, so that the PVC pellets quickly fall from the surfaces of the first sieve plate 7 and the second sieve plate 8. On the other hand, it accelerates the screening speed and conveys the screened PVC pellets to the first discharge port 9 and the second discharge port 10, and is removed from the first discharge port 9 and the second discharge port 10, thereby reducing the separation time of the PVC pellets, improving the working efficiency and reducing the labor consumption.

[0026] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0027] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A purification and screening device for medical PVC pellets, comprising a screening housing (1), Characterized in that: A vibration assembly (2) is fixedly installed at the bottom of the inner cavity of the screening housing (1), a rotation assembly (3) and a feed inlet (5) are fixedly installed at the top of the screening housing (1), a drying assembly (4) is fixedly installed at the bottom of one side of the outer wall of the screening housing (1), an impurity assembly (6) is fixedly installed at the lower end of the outer wall of the screening housing (1) away from the drying assembly (4), a first sieve plate (7) is movably connected to the lower end of the inner cavity of the screening housing (1), a connecting rod (12) is fixedly installed at the top of the first sieve plate (7), a second sieve plate (8) is fixedly installed at one end of the connecting rod (12) away from the first sieve plate (7), a spring telescopic rod (11) is fixedly installed at the top of the second sieve plate (8), and a first discharge port (9) and a second discharge port (10) are sequentially fixedly installed at the upper end of the outer side of the screening housing (1) close to the impurity assembly (6).

2. The purification and screening device for medical PVC pellets according to claim 1, Characterized in that: The vibration assembly (2) includes a first driving motor (21), the first driving motor (21) is fixedly installed at the bottom of the inner cavity of the screening housing (1), a connecting block (22) is fixedly installed at the output end of the first driving motor (21), a first connecting column (23) is fixedly installed at one end of the connecting block (22) away from the first driving motor (21), a connecting member (24) is fixedly installed at one end of the first connecting column (23) away from the connecting block (22), a second connecting column (25) is fixedly installed at the upper end of the connecting member (24), moving units (26) are fixedly connected to both ends of the second connecting column (25), and a fixed column (27) and a fixed rod (28) are fixedly installed at the bottom of the first sieve plate (7).

3. The purification and screening device for medical PVC pellets according to claim 1, Characterized in that: The rotation assembly (3) includes a second driving motor (31), the second driving motor (31) is fixedly installed at the top of the screening housing (1), and a rotating rod (32) is fixedly installed at the output end of the second driving motor (31); The drying assembly (4) includes an air collecting box (41), the air collecting box (41) is fixedly installed on one side of the screening housing (1), an air outlet (42) is fixedly installed at the top of the air collecting box (41), and a fan (43) is fixedly installed on the side of the air collecting box (41) away from the screening housing (1).

4. The purification and screening device for medical PVC pellets according to claim 1, Characterized in that: The impurity assembly (6) includes a support plate (61) and an impurity plate (63), the support plate (61) is fixedly connected to the screening housing (1), a impurity collecting box (62) is fixedly installed at the top of the support plate (61), and an impurity outlet (64) is fixedly installed on the screening housing (1) near the impurity collecting box (62).

5. The purification and screening device for medical PVC pellets according to claim 1, Characterized in that: One end of the spring telescopic rod (11) away from the second sieve plate (8) is fixedly connected to the screening housing (1), and the holes on the surface of the second sieve plate (8) are larger than those on the surface of the first sieve plate (7).

6. The medical PVC granule purification and screening device according to claim 3, characterized in that: A stirring blade is arranged on the outer side of the rotating rod (32), and one side of the stirring blade is inclined.

7. The medical PVC granule purification and screening device according to claim 4, characterized in that: A sliding groove is formed at the top of the support plate (61), and a sliding block is arranged at the bottom of the impurity collection box (62).

8. The medical PVC granule purification and screening device according to claim 3, characterized in that: The air outlet (42) is composed of a longitudinal pipe and two transverse pipes, and the two transverse pipes extend into the inner cavity of the screening housing (1), and a heating wire is arranged on the inner wall of the air collection box (41).

9. The medical PVC granule purification and screening device according to claim 2, characterized in that: A small cylindrical barrel is arranged at the top of the moving unit (26), and the diameter value of the fixed column (27) is greater than the diameter value of the small cylindrical barrel arranged at the top of the moving unit (26).

10. The medical PVC granule purification and screening device according to claim 2, characterized in that: The connecting piece (24) is composed of two cylinders and a connecting bar, and the connecting bar is installed between the two cylinders.

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