Particle vibration screening machine for PVC production

Abstract

The utility model relates to the technical field of screening machines, and discloses a particle vibration screening machine for PVC (polyvinyl chloride) production, which comprises a vibration frame, a buffer base is mounted at the bottom of the vibration frame, a screening bin is arranged at the top of the vibration frame, and a plurality of locking components which are uniformly distributed are mounted on the front side and the rear side of an inner cavity of the screening bin. The front side and the rear side of an inner cavity of the screening bin are each provided with a positioning frame, the positioning frames are located below the locking assemblies, a plurality of screening plates are further arranged in the screening bin, and the front ends and the rear ends of the screening plates extend to the positions below the locking assemblies. Due to the arrangement of the locking assembly, under the cooperation of the positioning frame, the screen plate can be clamped through the control assembly, meanwhile, the clamping force on the screen plate can be quickly relieved, and therefore workers can conveniently pull out the screen plate from the interior of the vibration frame and the interior of the screening bin through the control assembly; and the screening plates with different aperture specifications can be replaced conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of screening machines, and more specifically, to a particle vibration screening machine for PVC production. Background Art

[0002] Polyvinyl chloride, abbreviated as PVC, is a polymer formed by the polymerization of vinyl chloride monomer in the presence of initiators such as peroxides and azo compounds, or by the free radical polymerization mechanism under the action of light or heat. PVC was once the world's largest-produced general-purpose plastic and is widely used in building materials, industrial products, daily necessities, floor coverings, pipes, wires and cables, packaging films, bottles, foaming materials, sealing materials, fibers, etc.

[0003] Due to the limitation of the screen of the screening equipment, only particles with a particle size matching the screen can be screened. When particles of different particle sizes need to be screened, the screen needs to be replaced. The existing vibrating screening machine screen is mainly fixed by four bolts. Specifically, four screws are used to support the square tube or block, so that the square tube or block presses the screen under the limitation of the screening station on the screening machine body. This results in the need to repeatedly disassemble and assemble multiple bolt rods when replacing the screen before the limitation on the screen can be accessed. Due to the limitation of the space in the screening bin, it is not convenient to remove the fixed screen, so it needs to be improved. Utility Model Content

[0004] In order to overcome the deficiencies of the prior art, the utility model provides a particle vibration screening machine for PVC production.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a particle vibration screening machine for PVC production, comprising a vibration frame, a buffer base is installed at the bottom of the vibration frame, a screening bin is opened at the top of the vibration frame, a plurality of locking components evenly distributed are installed on the front and rear sides of the inner cavity of the screening bin, a positioning frame is installed on the front and rear sides of the inner cavity of the screening bin, the positioning frame is located below the plurality of locking components, a plurality of screening plates are also arranged inside the screening bin, the front and rear ends of the screening plates extend below the locking components, and the facing surfaces of the adjacent locking components and the positioning frames clamp the front and rear ends of the screening plates; a discharge port is opened on the right side of the vibration frame, and a plurality of control components and drawers are arranged on the left side of the vibration frame, the control components and the drawers correspond to the locking components and the screening plates one by one, the control components and the drawers are alternately distributed, the control components are connected to the locking components, and the drawers are connected to the screening plates.

[0006] As a preferred technical solution of the utility model, the locking assembly includes a locking frame fixedly installed in the screening bin, a plurality of evenly distributed piston cavities are opened inside the locking frame, a piston is sealed inside the piston cavity, a clamping rod is fixedly connected to the bottom of the piston, the lower end of the clamping rod extends to the bottom of the locking assembly, and the screening plate is clamped with the cooperation of the locking frame or the positioning frame below.

[0007] As a preferred technical solution of the utility model, a pneumatic component is arranged inside the locking frame at one end close to the control component, one end of the pneumatic component is connected to the piston chamber, and the other end of the pneumatic component is connected to both ends of the control component.

[0008] As a preferred technical solution of the utility model, the pneumatic component includes a sealed cavity opened inside the locking frame near one end of the control component, and the locking frame is also provided with a connecting groove located above the several piston cavities, the bottom of the connecting groove is connected to the top of the several piston cavities, and one end of the connecting groove is connected to the sealed cavity.

[0009] As a preferred technical solution of the utility model, the inner diameter of the sealing cavity is larger than the inner diameter of the connecting groove, and the inner cavity volume of the sealing cavity is larger than the sum of the inner cavity volumes of the connecting groove and several piston cavities.

[0010] As a preferred technical solution of the utility model, the internal sealing sleeve of the sealing cavity is connected with a pneumatic slider, and the outer surface of the pneumatic slider is fixedly connected with a connecting rod on one side close to the control component, and the other end of the connecting rod passes through the sealing cavity, the locking frame and the screening bin in sequence and extends to the outside of the vibration frame and is connected to both ends of the control component.

[0011] As a preferred technical solution of the utility model, the control assembly includes a linkage frame arranged outside the vibration frame, and the two ends of the linkage frame are fixedly connected to the front and rear connecting rods;

[0012] A screw rod is threadedly sleeved on the middle part of the linkage frame, one end of the screw rod passes through the linkage frame and is fixedly connected to a knob, the other end of the screw rod passes through the linkage frame and extends to the interior of the vibration frame and is fixedly connected to a rotating clamping shaft, the outer diameter of the rotating clamping shaft is larger than the outer diameter of the screw rod, and the screw rod and the rotating clamping shaft are both movably sleeved inside the vibration frame.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] 1. Due to the setting of the locking assembly of the utility model, the screening plate can be clamped by the operating assembly with the cooperation of the positioning frame, and it is also convenient to quickly release the clamping force on the screening plate, so that the staff can pull the screening plate out from the inside of the vibration frame and the screening bin through the operating assembly to facilitate the replacement of screening plates with different aperture specifications.

[0015] 2. The utility model is provided with a drawer, which not only facilitates the replacement of the screening plate, but also avoids the inconvenience of taking out the screening plate from the top of the screening bin in the prior art, and also avoids the inconvenience caused by the influence of the material guide trough when the screening plate is pulled out from the discharge port at the lower end of the screening bin. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the utility model vibrating screen and its internal structure;

[0018] Figure 3 This is a cross-sectional view of the front side of the vibrating screen of the utility model;

[0019] Figure 4 for Figure 3 A local enlarged schematic diagram of the middle A;

[0020] Figure 5 This is a schematic diagram of the structure of the locking assembly of the utility model;

[0021] Figure 6 for Figure 5 Cross-sectional view of the front of the middle locking frame.

[0022] In the figure: 1. Vibration frame; 2. Buffer base; 3. Screening bin; 4. Locking assembly; 41. Locking frame; 42. Piston chamber; 43. Piston; 44. Pressing rod; 45. Pneumatic assembly; 451. Sealing chamber; 452. Connecting groove; 453. Pneumatic slider; 454. Connecting rod; 5. Positioning frame; 6. Screening plate; 7. Control assembly; 71. Linkage frame; 72. Screw rod; 73. Knob; 74. Rotating clamp shaft; 8. Pull-out piece. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] like Figures 1 to 6As shown, the utility model provides a particle vibration screening machine for PVC production, including a vibration frame 1, a buffer base 2 is installed at the bottom of the vibration frame 1, a screening bin 3 is opened on the top of the vibration frame 1, and a plurality of locking components 4 are evenly distributed on both sides of the front and rear of the inner cavity of the screening bin 3, and a positioning frame 5 is installed on both sides of the front and rear of the inner cavity of the screening bin 3, and the positioning frame 5 is located below the plurality of locking components 4. A plurality of screening plates 6 are also arranged inside the screening bin 3, and the front and rear ends of the screening plates 6 extend to the bottom of the locking components 4, and the facing surfaces of the adjacent locking components 4 and the positioning frames 5 clamp the front and rear ends of the screening plates 6; a discharge port is opened on the right side of the vibration frame 1, and a plurality of control components 7 and drawers 8 are arranged on the left side of the vibration frame 1, and the control components 7 and the drawers 8 are both connected to the locking components 4. The components 4 and the screening plates 6 correspond one to one, the operating components 7 and the pull-out pieces 8 are distributed alternately, the operating components 7 are connected to the locking components 4, and the pull-out pieces 8 are connected to the screening plates 6; due to the setting of the locking components 4, the screening plates 6 can be clamped by the operating components 7 with the cooperation of the positioning frame 5, and it is also convenient to quickly release the clamping force on the screening plates 6, so that it is convenient for the staff to pull out the screening plates 6 from the inside of the vibration frame 1 and the screening bin 3 through the operating components 7, so as to replace the screening plates 6 with different aperture specifications; and due to the setting of the pull-out pieces 8, it is not only convenient to replace the screening plates 6, but also can avoid the inconvenience of removing the screening plates 6 from the top of the screening bin 3 in the prior art, and also avoid the inconvenience caused by the influence of the material guide trough when the screening plates 6 are pulled out from the discharge port at the lower end of the screening bin 3.

[0025] Among them, the locking assembly 4 includes a locking frame 41 fixedly installed in the screening bin 3, and a plurality of evenly distributed piston chambers 42 are opened inside the locking frame 41. The internal sealing sleeve of the piston chamber 42 is connected with a piston 43, and the bottom of the piston 43 is fixedly connected with a clamping rod 44. The lower end of the clamping rod 44 extends to the bottom of the locking assembly 4, and the screening plate 6 is clamped with the cooperation of the locking frame 41 or the positioning frame 5 below; due to the setting of the piston chamber 42, when the control assembly 7 moves, the pneumatic assembly 45 can be used to drive the piston 43 to rise and fall, thereby causing the clamping rod 44 to rise and fall, and the lifting of the clamping rod 44 can again press the screening plate 6 with the cooperation of the locking frame 41 or the positioning frame 5 below.

[0026] A pneumatic component 45 is disposed at one end of the locking frame 41 close to the control component 7 , one end of the pneumatic component 45 is connected to the piston chamber 42 , and the other end of the pneumatic component 45 is connected to both ends of the control component 7 .

[0027] Among them, the pneumatic component 45 includes a sealed chamber 451 opened inside the locking frame 41 near one end of the control component 7. The locking frame 41 also has a connecting groove 452 located above the several piston chambers 42. The bottom of the connecting groove 452 is connected to the top of the several piston chambers 42, and one end of the connecting groove 452 is connected to the sealed chamber 451.

[0028] The inner diameter of the sealing cavity 451 is larger than the inner diameter of the connecting groove 452 , and the inner cavity volume of the sealing cavity 451 is larger than the sum of the inner cavity volumes of the connecting groove 452 and the plurality of piston cavities 42 .

[0029] Among them, the internal sealing sleeve of the sealing cavity 451 is connected with a pneumatic slider 453, and the outer surface of the pneumatic slider 453 is fixedly connected with a connecting rod 454 on one side close to the control component 7. The other end of the connecting rod 454 passes through the sealing cavity 451, the locking frame 41 and the screening bin 3 in sequence and extends to the outside of the vibration frame 1 and is connected to the two ends of the control component 7.

[0030] The control assembly 7 includes a linkage frame 71 disposed outside the vibration frame 1, and both ends of the linkage frame 71 are fixedly connected to the front and rear connecting rods 454;

[0031] A screw rod 72 is threadedly sleeved on the middle part of the linkage frame 71, one end of the screw rod 72 passes through the linkage frame 71 and is fixedly connected to a knob 73, the other end of the screw rod 72 passes through the linkage frame 71 and extends to the interior of the vibration frame 1 and is fixedly connected to a rotating clamping shaft 74, the outer diameter of the rotating clamping shaft 74 is larger than the outer diameter of the screw rod 72, and the screw rod 72 and the rotating clamping shaft 74 are both movably sleeved on the interior of the vibration frame 1; due to the setting of the rotating clamping shaft 74, the screw rod 72 will not rotate, and when the screw rod 72 rotates, the linkage frame 71 can be moved laterally under the restriction of the rotating clamping shaft 74 and the vibration frame 1, and then the pneumatic slider 453 is driven to move through the connecting rod 454, thereby changing the air pressure in the sealing chamber 451, so that the piston 43 and the clamping rod 44 can be raised and lowered under the cooperation of the connecting groove 452 and the piston chamber 42.

[0032] The working principle and use process of this utility model:

[0033] As shown in the figure, after the equipment is assembled, the PVC particles to be screened are poured into the screening bin 3 so that they move along the surface of the screening plate 6 under the continuous vibration of the vibration frame 1, and the smaller particles fall onto the screening plate 6 below and move to the right along its surface;

[0034] When the screening plate 6 needs to be replaced, the knob 73 is first turned to drive the linkage frame 71 to move through the screw 72 under the restriction of the rotating clamp shaft 74, and the movement of the linkage frame 71 can drive the pneumatic slider 453 to move along the sealing chamber 451 through the two connecting rods 454, that is, the air pressure in the sealing chamber 451 changes, and then the air pressure in the piston chamber 42 changes with the cooperation of the connecting groove 452, so that the pressing rod 44 can be driven to move upward with the cooperation of the piston 43;

[0035] Due to the rise of the clamping rod 44, the clamping force applied to the screening plate 6 with the cooperation of the locking frame 41 or the positioning frame 5 below is released. At this time, the screening plate 6 lacks a fixing effect. The screening plate 6 can be pulled out of the vibration frame 1 and the screening bin 3 by pulling the pull-out piece 8. After inserting a new screening plate 6, the clamping rod 44 can be moved downward by turning the knob 73 in the opposite direction, and then the screening plate 6 can be clamped again with the cooperation of the locking frame 41 or the positioning frame 5 below it.

[0036] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A particle vibrating screening machine for PVC production, comprising a vibrating frame (1), characterized in that: A buffer base (2) is installed at the bottom of the vibration frame (1), a screening chamber (3) is opened at the top of the vibration frame (1), a plurality of locking components (4) are evenly distributed and installed on both the front and rear sides of the inner cavity of the screening chamber (3), a positioning frame (5) is installed on both the front and rear sides of the inner cavity of the screening chamber (3), the positioning frame (5) is located below the plurality of locking components (4), and a plurality of screening plates (6) are also arranged inside the screening chamber (3), the front and rear ends of the screening plates (6) extend to the bottom of the locking components (4), and the screening plates (6) are arranged on the inner side of the screening chamber (3). The facing surfaces of the locking assembly (4) and the positioning frame (5) are used to clamp the front and rear ends of the screening plate (6); a discharge port is provided on the right side of the vibration frame (1); a plurality of control assemblies (7) and drawer pieces (8) are provided on the left side of the vibration frame (1); the control assemblies (7) and drawer pieces (8) are respectively corresponding to the locking assembly (4) and the screening plate (6); the control assemblies (7) and drawer pieces (8) are alternately distributed; the control assemblies (7) are connected to the locking assembly (4), and the drawer pieces (8) are connected to the screening plate (6).

2. A particle vibration screening machine for PVC production according to claim 1, characterized in that: The locking assembly (4) comprises a locking frame (41) fixedly mounted in the screening bin (3); a plurality of piston chambers (42) evenly distributed are provided inside the locking frame (41); a piston (43) is sealed inside the piston chamber (42); a clamping rod (44) is fixedly connected to the bottom of the piston (43); the lower end of the clamping rod (44) extends to the bottom of the locking assembly (4) and clamps the screening plate (6) in cooperation with the locking frame (41) or the positioning frame (5) below.

3. A particle vibration screening machine for PVC production according to claim 2, characterized in that: A pneumatic component (45) is provided at one end of the locking frame (41) close to the control component (7), one end of the pneumatic component (45) is connected to the piston chamber (42), and the other end of the pneumatic component (45) is connected to both ends of the control component (7).

4. A particle vibration screening machine for PVC production according to claim 3, characterized in that: The pneumatic component (45) includes a sealed cavity (451) opened inside the locking frame (41) near one end of the control component (7), and the locking frame (41) is also provided with a connecting groove (452) located above the plurality of piston cavities (42), the bottom of the connecting groove (452) is connected to the top of the plurality of piston cavities (42), and one end of the connecting groove (452) is connected to the sealed cavity (451).

5. A particle vibration screening machine for PVC production according to claim 4, characterized in that: The inner diameter of the sealing cavity (451) is greater than the inner diameter of the connecting groove (452), and the inner cavity volume of the sealing cavity (451) is greater than the sum of the inner cavity volumes of the connecting groove (452) and the plurality of piston cavities (42).

6. A particle vibration screening machine for PVC production according to claim 5, characterized in that: The sealed cavity (451) is sealed internally with a pneumatic slider (453), and a connecting rod (454) is fixedly connected to the outer surface of the pneumatic slider (453) on one side close to the control component (7). The other end of the connecting rod (454) passes through the sealed cavity (451), the locking frame (41) and the screening bin (3) in sequence and extends to the outside of the vibration frame (1) and is connected to both ends of the control component (7).

7. A particle vibration screening machine for PVC production according to claim 6, characterized in that: The control assembly (7) comprises a linkage frame (71) arranged outside the vibration frame (1), and two ends of the linkage frame (71) are fixedly connected to two front and rear connecting rods (454); A screw rod (72) is threadedly sleeved at the middle of the linkage frame (71); one end of the screw rod (72) penetrates the linkage frame (71) and is fixedly connected to a knob (73); the other end of the screw rod (72) penetrates the linkage frame (71) and extends to the interior of the vibration frame (1) and is fixedly connected to a rotating clamping shaft (74); the outer diameter of the rotating clamping shaft (74) is larger than the outer diameter of the screw rod (72); the screw rod (72) and the rotating clamping shaft (74) are both movably sleeved inside the vibration frame (1).

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