A plastic production dust absorption device

Abstract

The utility model belongs to the technical field of plastic production, and concretely is a kind of plastic production dust absorption device, including rotating shaft, the top end sliding of rotating shaft is penetrated to the above of material receiving plate and is equipped with installation frame, the outside of rotating shaft is located inside the installation frame and is equipped with driving bevel gear, one side of installation frame is rotatably installed with rotating shaft, and one end of rotating shaft is equipped with driven bevel gear, and the outside of rotating shaft is equidistantly equipped with four stirring vanes;When negative pressure motor drives rotating shaft to rotate, driving bevel gear rotates, driving bevel gear and driven bevel gear are engaged, are driven by gear transmission, driven bevel gear and rotating shaft rotate, and the four stirring vanes of outside rotate and make the plastic on material receiving plate be smashed to overturn, dust between plastic particles is fully exposed, more easily be sucked into by dust suction pipe, so that dust can be fully absorbed, reduce the amount of dust dispersion to working environment, improve working environment.

Description

Technical Field

[0001] This utility model relates to the field of plastic production technology, specifically a dust absorption device for plastic production. Background Technology

[0002] In the production process of PET modified plastic sheets, the required plastic needs to be crushed into smaller particles before extrusion. During the crushing process, due to the shearing action, large pieces of material will break into fine particles, which will naturally generate dust. In order to avoid the impact of dust on the working environment, a dust absorption device is required.

[0003] A Chinese patent with authorization announcement number CN218573783U discloses a dust-collecting pulverizer for the production of rubber and plastic insulation boards. The pulverizer includes a first pulverizing box, which is vertically connected to the top of a second pulverizing box. The second pulverizing box has a discharge port on one side. The first pulverizing box contains a first pulverizing mechanism for rubber and plastic insulation boards, and baffles are hinged to symmetrical sides inside the first pulverizing box. Limiting mechanisms for limiting the baffles are provided at all four ends of symmetrical sides inside the first pulverizing box. A dust-collecting fan is installed on one side of the second pulverizing box, and a second pulverizing mechanism for rubber and plastic insulation boards is located inside the second pulverizing box. This invention, through the arrangement of pulverizing rollers, a first pulverizing blade, and a second pulverizing blade, can pulverize the rubber and plastic insulation boards multiple times, ensuring a good pulverizing effect. The pulverizing rollers, which first enter the first pulverizing box, further improve the pulverizing effect of the rubber and plastic insulation boards.

[0004] However, the aforementioned pulverizer still has some problems. After PET is pulverized, a large amount of dust will be adsorbed on the surface of the particles. When statically piled up, the bottom dust is covered by the upper material and cannot fully contact the dust collection airflow. The dust is difficult to remove from the material surface, which will reduce the dust recovery effect. Therefore, a plastic production dust absorption device is proposed to address the above problems. Utility Model Content

[0005] In order to overcome the shortcomings of the existing technology and solve the problems mentioned in the background technology, this utility model proposes a dust absorption device for plastic production.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: A plastic production dust absorption device of this utility model includes a housing. A receiving plate is installed between the two sides of the bottom end of the housing. A filter plate is installed between the two sides of the housing directly below the receiving plate. A negative pressure motor is installed on the inner wall of the bottom side of the housing. A rotating shaft is installed at the output end of the negative pressure motor. Three fan blades are installed at the bottom end of the rotating shaft. An exhaust pipe is installed on one side of the bottom end of the housing below the filter plate. Dust suction pipes are connected to both sides of the housing between the receiving plate and the filter plate. One end of the dust suction pipe extends above the receiving plate. The top end of the rotating shaft slides through to the top of the receiving plate and is fitted with a mounting frame. An active bevel gear is installed on the outer side of the rotating shaft inside the mounting frame. One side of the mounting frame rotates... The device is equipped with a rotating shaft, one end of which is fitted with a driven bevel gear. The driving bevel gear meshes with the driven bevel gear. Four stirring blades are equidistantly mounted on the outer side of the rotating shaft. The stirring blades are in contact with the top side of the receiving plate. When the negative pressure motor starts, the dust generated during the crushing process on the receiving plate is sucked into the box through the dust suction pipe. After the dust is filtered by the filter plate, clean air is discharged from the exhaust pipe, achieving effective absorption of dust during the crushing process. The driving bevel gear rotates accordingly, and through the meshing action, it drives the driven bevel gear and the rotating shaft to rotate, thereby causing the stirring blades to tumble the crushed plastic on the receiving plate. The dust between the plastic particles is fully exposed and more easily sucked into the dust suction pipe, thus enabling the dust to be fully absorbed, reducing the amount of dust released into the working environment, and improving the working environment.

[0007] Preferably, two connecting shafts are symmetrically rotatably installed on both sides of the top of the housing. Crushing rollers are installed on the outer side of each connecting shaft. A driving gear and a driven gear are respectively installed at one end of each connecting shaft, and the driving gear and the driven gear mesh with each other. A support base is installed on one side of the housing, and a drive motor is installed inside the support base. One end of the connecting shaft is connected to one end of the drive motor. After the drive motor is started, it drives one of the connecting shafts to rotate. Through the meshing of the driving gear and the driven gear, the other connecting shaft rotates in the opposite direction. The two crushing rollers rotate relative to each other, crushing the PET modified plastic entering from the feed hopper into granules.

[0008] Preferably, a feed hopper is connected to the top side of the housing, and two guide plates are symmetrically installed above the crushing rollers at the top of the housing. The feed hopper provides a channel for the plastic raw material to enter the housing, facilitating the operator to feed the PET modified plastic into the device. The guide plates are designed to guide the plastic raw material to fall accurately between the two crushing rollers, preventing the plastic raw material from scattering outside the crushing rollers during the feeding process and improving the crushing efficiency.

[0009] Preferably, a hinged door is installed on one side of the housing at the position of the receiving plate and the filter plate. A handle is installed on one side of the door, and the operator can open the door by the handle to easily remove the crushed plastic particles on the receiving plate or the dust on the filter plate, thus realizing the discharge operation.

[0010] Preferably, two support shafts are symmetrically and rotatably mounted on both sides of the middle edge of the feed hopper. A baffle is mounted on the outer side of each support shaft, and a circular gear is mounted on one side of each support shaft. A servo motor is mounted on one side of the housing, and a bidirectional lead screw is mounted on the output end of the servo motor. Two symmetrical sliding grooves are formed on the top edge of the housing, and a rack is slidably mounted inside each groove. A screw hole is formed inside the bottom end of the rack. One end of the bidirectional lead screw passes through the screw hole and is rotatably mounted inside one side of the sliding groove. The rack meshes with the circular gear. The servo motor drives the bidirectional lead screw to rotate. Because the bidirectional lead screw and rack are engaged through the screw hole, the rack moves outward within the sliding groove, meshing with the circular gear, thereby driving the circular gear and support shaft to rotate. This causes the baffle to move downward around the support shaft, opening the feed inlet. By adjusting the rotation direction and angle of the servo motor, the movement distance of the rack can be precisely controlled, thus adjusting the size of the feed inlet. When the flow rate of plastic raw materials is large or the particles are large, appropriately increasing the size of the feed inlet can ensure that the plastic enters the chamber smoothly, avoid blockage, and enable the crushing operation to proceed stably.

[0011] Preferably, a control panel is installed on one side of the housing. The control panel is electrically connected to the electrical components inside the device and is used to control the operation of the electrical components inside the device. The operator can centrally control the start, stop, speed and other parameters of electrical components such as drive motor, negative pressure motor, and servo motor to realize the automated control of the entire dust absorption device.

[0012] The advantages of this utility model are:

[0013] 1. When the negative pressure motor drives the rotating shaft to rotate, the active bevel gear rotates accordingly. The active bevel gear meshes with the driven bevel gear, and through gear transmission, drives the driven bevel gear and the rotating shaft to rotate. The rotation of the rotating shaft causes the four outer stirring blades to tumble the crushed plastic on the material plate, fully exposing the dust between the plastic particles, making it easier to be sucked in by the dust suction pipe. This allows the dust to be fully absorbed, reducing the amount of dust released into the working environment and improving the working environment.

[0014] 2. The output shaft of the servo motor of this utility model drives the bidirectional lead screw to rotate. The rotation of the bidirectional lead screw causes the rack to move outward or inward in the slide groove, depending on the rotation direction of the servo motor. The rack meshes with the circular gear, and the movement of the rack drives the circular gear to rotate, causing the support shaft to drive the baffle to move downward or upward around the support shaft, opening or closing the feed port. This ensures that the plastic can enter the box smoothly, avoids blockage, and allows the crushing operation to proceed stably. At the same time, it ensures the dust absorption effect. When the flow rate of the plastic raw material is small or the particles are small, the size of the feed port can be reduced to precisely control the feed amount. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the intermediate axis side view of the present invention;

[0017] Figure 2 This is a schematic cross-sectional view of the main body of the dust absorption device.

[0018] Figure 3 This is a schematic diagram of the dust absorption component structure;

[0019] Figure 4 This is a schematic diagram of the feeding assembly structure of the crushing assembly frame;

[0020] Figure 5 This is a schematic diagram of the feed adjustment component.

[0021] In the diagram: 1. Housing; 2. Receiving plate; 201. Filter plate; 202. Negative pressure motor; 203. Rotating shaft; 204. Fan blade; 205. Exhaust pipe; 206. Dust suction pipe; 207. Mounting frame; 208. Driving bevel gear; 209. Rotating shaft; 210. Driven bevel gear; 211. Stirring blade; 3. Connecting shaft; 301. Crushing roller; 302. Driving gear; 303. Driven gear; 304. Support base; 305. Drive motor; 4. Feed hopper; 401. Guide plate; 402. Movable door; 403. Handle; 5. Support shaft; 501. Baffle; 502. Circular gear; 503. Servo motor; 504. Two-way lead screw; 505. Slide groove; 506. Rack; 6. Control panel. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0023] Please see Figures 1-3 As shown, a dust absorption device for plastic production includes a housing 1. A receiving plate 2 is installed between the two sides of the bottom of the housing 1. A filter plate 201 is installed between the two sides of the housing 1, directly below the receiving plate 2. A negative pressure motor 202 is installed on the inner wall of the bottom side of the housing 1. A rotating shaft 203 is installed at the output end of the negative pressure motor 202. Three fan blades 204 are installed at the bottom end of the rotating shaft 203. An exhaust pipe 205 is installed on one side of the bottom of the housing 1, below the filter plate 201. Dust collection pipes 206 are connected to both sides of the housing 1 between the receiving plate 2 and the filter plate 201. One end of the tube 206 extends to the top of the receiving plate 2. The top end of the rotating shaft 203 slides through to the top of the receiving plate 2 and is mounted on a mounting frame 207. An active bevel gear 208 is mounted on the outside of the rotating shaft 203 inside the mounting frame 207. A rotating shaft 209 is rotatably mounted on one side of the mounting frame 207. A driven bevel gear 210 is mounted on one end of the rotating shaft 209, and the active bevel gear 208 and the driven bevel gear 210 mesh with each other. Four stirring blades 211 are equidistantly mounted on the outside of the rotating shaft 209, and the stirring blades 211 are in contact with the top side of the receiving plate 2.

[0024] A control panel 6 is installed on one side of the housing 1. The control panel 6 is electrically connected to the electrical components inside the device and is used to control the operation of the electrical components inside the device. During operation, a large amount of dust will be adsorbed on the surface of the PET granules after crushing. When statically piled up, the bottom dust is covered by the upper material and cannot fully contact the suction airflow. The dust is difficult to remove from the material surface, which will reduce the dust recovery effect. During the crushing process, the operator starts the negative pressure motor 202 on the control panel 6. The output shaft of the negative pressure motor 202 drives the rotating shaft 203 to rotate. The rotating shaft 203 drives the three fan blades 204 at the bottom to rotate at high speed. The rotation of the fan blades 204 generates negative pressure suction, forming a negative pressure environment inside the housing 1. The suction pipe 206 sucks the dust generated during the crushing process above the receiving plate 2 into the space between the receiving plate 2 and the filter plate 201. The dust passes through the filter plate 201 with the airflow. The filter plate 201 intercepts and filters the dust. The filtered clean air is discharged from the exhaust pipe 205, realizing the effective absorption of dust during the crushing process.

[0025] When the negative pressure motor 202 drives the rotating shaft 203 to rotate, the active bevel gear 208 at the top of the rotating shaft 203 rotates accordingly. The active bevel gear 208 meshes with the driven bevel gear 210, and through gear transmission, drives the driven bevel gear 210 and the rotating shaft 209 to rotate. The rotation of the rotating shaft 209 causes the four outer stirring blades 211 to tumble the crushed plastic on the material plate 2. The dust between the plastic particles is fully exposed and more easily sucked in by the suction pipe 206, so that the dust can be fully absorbed, reducing the amount of dust released into the working environment and improving the working environment.

[0026] Please see Figure 1 , 2 As shown in Figures 4 and 5, two connecting shafts 3 are symmetrically and rotatably mounted on both sides of the top of the housing 1. Crushing rollers 301 are mounted on the outer side of each connecting shaft 3. A driving gear 302 and a driven gear 303 are respectively mounted on one end of each connecting shaft 3, and the driving gear 302 and the driven gear 303 mesh with each other. A support base 304 is mounted on one side of the housing 1. A drive motor 305 is installed inside the support base 304. One end of the connecting shaft 3 is connected to one end of the drive motor 305.

[0027] The top side of the box 1 is connected to the feed hopper 4, and two guide plates 401 are symmetrically installed above the crushing roller 301 at the top of the box 1.

[0028] One side of the housing 1 is fitted with a movable door 402 at the position of receiving plate 2 and filter plate 201 via a hinge, and a handle 403 is installed on one side of the movable door 402.

[0029] Two support shafts 5 are symmetrically and rotatably mounted on both sides of the middle edge of the feed hopper 4. Each support shaft 5 has a baffle 501 mounted on its outer side, and a circular gear 502 mounted on one side of each support shaft 5. A servo motor 503 is mounted on one side of the housing 1, and a bidirectional lead screw 504 is mounted on the output end of the servo motor 503. Two sliding grooves 505 are symmetrically formed on the top edge of the housing 1. A rack 506 is slidably mounted inside the sliding groove 505, and a screw hole is formed inside the bottom end of the rack 506. One end of the bidirectional lead screw 504 passes through the screw hole and is rotatably mounted inside one side of the sliding groove 505. The rack 506 and... The circular gears 502 mesh with each other. During operation, in the production process of PET modified plastic sheets, the required plastic needs to be crushed into smaller granules before extrusion to facilitate subsequent extrusion molding. The feed hopper 4 provides a channel for the plastic raw material to enter the box 1, making it convenient for operators to feed the PET modified plastic into the device. At the same time, two guide plates 401 are symmetrically installed at the top of the box 1 above the crushing roller 301. The guide plates 401 guide the plastic raw material so that the plastic raw material fed into the feed hopper 4 can fall accurately between the two crushing rollers 301, avoiding the plastic raw material from scattering on the outside of the crushing rollers 301 and improving the crushing efficiency.

[0030] When the operator starts the drive motor 305 on the control panel 6, the output shaft of the drive motor 305 rotates, driving a connecting shaft 3 connected to it to rotate. Since the drive gear 302 is installed on the connecting shaft 3, the drive gear 302 rotates accordingly. The drive gear 302 meshes with the driven gear 303, and through gear transmission, the other connecting shaft 3 rotates in the opposite direction. The two connecting shafts 3 respectively drive the crushing rollers 301 on their outer sides to rotate relative to each other. At this time, the PET modified plastic entering from the feed hopper 4 is squeezed and sheared between the two relatively rotating crushing rollers 301 and crushed into granules.

[0031] During the crushing operation, the operator starts the servo motor 503 on the control panel 6. The output shaft of the servo motor 503 drives the bidirectional lead screw 504 to rotate. The rotation of the bidirectional lead screw 504 causes the rack 506 to move outward or inward in the slide groove 505, depending on the rotation direction of the servo motor 503. The rack 506 meshes with the circular gear 502. The movement of the rack 506 drives the circular gear 502 to rotate, causing the support shaft 5 to drive the baffle 501 to move downward or upward around the support shaft 5, opening or closing the feed port. This ensures that the plastic can smoothly enter the box 1, avoids blockage, and allows the crushing operation to proceed stably. At the same time, it ensures the dust absorption effect. When the flow rate of the plastic raw material is small or the particles are small, the size of the feed port can be reduced to precisely control the feed amount.

[0032] When it is necessary to remove the crushed plastic particles from the receiving plate 2 or clean the dust intercepted on the filter plate 201, the operator can hold the handle 403 and easily remove the plastic particles through the hinged movable door 402 to complete the discharge operation, or clean and maintain the filter plate 201 to ensure the filtration effect of the filter plate 201 and enable the dust absorption device to operate continuously and stably.

[0033] Working principle: During the crushing operation, the operator starts the servo motor 503 on the control panel 6. The output shaft of the servo motor 503 drives the bidirectional lead screw 504 to rotate. The rotation of the bidirectional lead screw 504 causes the rack 506 to move outward or inward in the slide groove 505, depending on the rotation direction of the servo motor 503. The rack 506 meshes with the circular gear 502. The movement of the rack 506 drives the circular gear 502 to rotate, causing the support shaft 5 to drive the baffle 501 to move downward or upward around the support shaft 5, opening or closing the feed port. This ensures that the plastic can smoothly enter the box 1, avoids blockage, and allows the crushing operation to proceed stably. At the same time, it ensures the dust absorption effect. When the flow rate of the plastic raw material is small or the particles are small, the size of the feed port can be reduced to precisely control the feed amount.

[0034] The feed hopper 4 provides a channel for plastic raw materials to enter the box 1, making it convenient for operators to feed PET modified plastics into the device. At the same time, two guide plates 401 are symmetrically installed at the top of the box 1 above the crushing roller 301. The guide plates 401 guide the plastic raw materials, so that the plastic raw materials fed into the feed hopper 4 can fall accurately between the two crushing rollers 301, avoiding the plastic raw materials from scattering on the outside of the crushing rollers 301 and improving the crushing efficiency.

[0035] When the operator starts the drive motor 305 on the control panel 6, the output shaft of the drive motor 305 rotates, driving a connecting shaft 3 connected to it to rotate. Since the drive gear 302 is installed on the connecting shaft 3, the drive gear 302 rotates accordingly. The drive gear 302 meshes with the driven gear 303, and through gear transmission, the other connecting shaft 3 rotates in the opposite direction. The two connecting shafts 3 respectively drive the crushing rollers 301 on their outer sides to rotate relative to each other. At this time, the PET modified plastic entering from the feed hopper 4 is squeezed and sheared between the two relatively rotating crushing rollers 301 and crushed into granules.

[0036] During the crushing process, the operator starts the negative pressure motor 202 on the control panel 6. The output shaft of the negative pressure motor 202 drives the rotating shaft 203 to rotate. The rotating shaft 203 drives the three fan blades 204 at the bottom to rotate at high speed. The rotation of the fan blades 204 generates negative pressure suction, creating a negative pressure environment inside the box 1. The dust suction pipe 206 sucks the dust generated during the crushing process above the receiving plate 2 into the space between the receiving plate 2 and the filter plate 201. The dust passes through the filter plate 201 with the airflow. The filter plate 201 intercepts and filters the dust. The filtered clean air is discharged from the exhaust pipe 205, thus achieving effective absorption of dust during the crushing process.

[0037] When the negative pressure motor 202 drives the rotating shaft 203 to rotate, the active bevel gear 208 at the top of the rotating shaft 203 rotates accordingly. The active bevel gear 208 meshes with the driven bevel gear 210. Through gear transmission, the driven bevel gear 210 and the rotating shaft 209 rotate. The rotation of the rotating shaft 209 causes the four outer stirring blades 211 to turn over the crushed plastic on the material plate 2. The dust between the plastic particles is fully exposed and more easily sucked in by the suction pipe 206, so that the dust can be fully absorbed, reducing the amount of dust released into the working environment and improving the working environment.

[0038] When it is necessary to remove the crushed plastic particles from the receiving plate 2 or clean the dust intercepted on the filter plate 201, the operator can hold the handle 403 and easily remove the plastic particles through the hinged movable door 402 to complete the discharge operation, or clean and maintain the filter plate 201 to ensure the filtration effect of the filter plate 201 and enable the dust absorption device to operate continuously and stably.

[0039] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

Claims

1. A dust absorption device for plastic production, characterized in that: The enclosure includes a housing (1), a receiving plate (2) installed between the two sides of the bottom end of the housing (1), a filter plate (201) installed between the two sides of the housing (1) directly below the receiving plate (2), a negative pressure motor (202) installed on the inner wall of the bottom side of the housing (1), a rotating shaft (203) installed at the output end of the negative pressure motor (202), three fan blades (204) installed at the bottom end of the rotating shaft (203), an exhaust pipe (205) installed on one side of the bottom end of the housing (1) below the filter plate (201), and a suction pipe (206) connected to both sides of the housing (1) between the receiving plate (2) and the filter plate (201). One end extends to the top of the receiving plate (2). The top end of the rotating shaft (203) slides through to the top of the receiving plate (2) and is mounted on a mounting frame (207). An active bevel gear (208) is mounted on the outside of the rotating shaft (203) inside the mounting frame (207). A rotating shaft (209) is rotatably mounted on one side of the mounting frame (207). A driven bevel gear (210) is mounted on one end of the rotating shaft (209), and the active bevel gear (208) and the driven bevel gear (210) mesh with each other. Four stirring blades (211) are equidistantly mounted on the outside of the rotating shaft (209). The stirring blades (211) are in contact with the top side of the receiving plate (2).

2. The dust absorption device for plastic production according to claim 1, characterized in that: Two connecting shafts (3) are symmetrically rotatably mounted on both sides of the top of the box (1). Crushing rollers (301) are mounted on the outer side of each connecting shaft (3). A drive gear (302) and a driven gear (303) are respectively mounted on one end of the connecting shaft (3), and the drive gear (302) and the driven gear (303) mesh with each other. A support base (304) is mounted on one side of the box (1). A drive motor (305) is installed inside the support base (304). One end of the connecting shaft (3) is connected to one end of the drive motor (305).

3. The dust absorption device for plastic production according to claim 2, characterized in that: The top side of the box (1) is connected to a feed hopper (4), and two guide plates (401) are symmetrically installed above the crushing roller (301) at the top of the box (1).

4. The dust absorption device for plastic production according to claim 3, characterized in that: One side of the housing (1) is fitted with a movable door (402) at the position of receiving plate (2) and filter plate (201) by hinges, and a handle (403) is installed on one side of the movable door (402).

5. A dust absorption device for plastic production according to claim 4, characterized in that: Two support shafts (5) are symmetrically and rotatably installed on both sides of the middle edge of the feed hopper (4). Baffles (501) are installed on the outer side of each support shaft (5). Circular gears (502) are installed on one side of each support shaft (5). A servo motor (503) is installed on one side of the housing (1). A bidirectional lead screw (504) is installed at the output end of the servo motor (503). Two sliding grooves (505) are symmetrically opened on the top edge of the housing (1). A rack (506) is slidably installed inside the sliding groove (505). A screw hole is opened inside the bottom end of the rack (506). One end of the bidirectional lead screw (504) passes through the screw hole and is rotatably installed inside one side of the sliding groove (505). The rack (506) meshes with the circular gear (502).

6. A dust absorption device for plastic production according to claim 5, characterized in that: A control panel (6) is installed on one side of the housing (1). The control panel (6) is electrically connected to the electrical components inside the device and is used to control the operation of the electrical components inside the device.

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