Screening device for PVC raw material production and processing

Abstract

The utility model discloses a screening device for PVC (polyvinyl chloride) raw material production and processing, which is characterized in that when a screen rotates, crushed particles of silicon nitride raw materials can be effectively screened, smaller particles can flow into a box body through through holes of the screen, and effective separation of particles with different sizes can be realized. When a silicon nitride raw material is crushed, large particles can be discharged from the leaking opening of the leaking groove along with rotation of the screen, fine particles and coarse particles can be separated, the vibrating screen of a vibrating motor can be effectively replaced to screen the particles of different sizes, then the inclined scraper blade is utilized to crush the small particles of the silicon nitride raw material to block the small particles to flow out from the leaking opening of the leaking groove, and the screening efficiency is improved. And large particles are poured into a leakage opening of the leakage groove and flow out.

Description

Technical Field

[0001] This utility model relates to the field of packaging equipment technology, specifically a screening device for the production and processing of PVC raw materials. Background Technology

[0002] Screening devices play a crucial role in PVC production, not only ensuring the quality of raw materials but also improving the automation and intelligence of the entire production process. Through continuous improvement and innovation of existing technologies, screening devices will play an even more critical role in improving the quality of PVC products and production efficiency. By using coarse-pore vibrating screen conveyor belts and fine-pore vibrating screen conveyor belts to screen raw materials of different sizes, they can be separated and stored separately for convenient processing in the next step.

[0003] Current screening devices for PVC raw material production and processing screen PVC raw material particles by vibrating a screen filter to screen particles of different sizes. Because different sizes of PVC raw material particles are screened, fine particles can be screened out by the screen and enter the collection device. However, coarse particles cannot be collected by the screen and need to be manually stopped for collection, which is inefficient. Utility Model Content

[0004] The purpose of this invention is to provide a screening device for the production and processing of PVC raw materials, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a screening device for PVC raw material production and processing, comprising a PVC raw material screening mechanism, the PVC raw material screening mechanism including a funnel, the inside of which is connected by a first roller shaft and a second roller shaft, the outer sides of the first roller shaft and the second roller shaft being welded together to form a crushing wheel, one end of the first roller shaft being bolted to a first gear, the teeth of the first gear engaging with a second gear, the first gear being bolted to a servo motor, and the second gear being bolted to the second roller shaft. The lower end of the funnel is bolted to the screening box, which has an opening inside. One end of the screening box is fitted with a trough block, and the trough block is bolted to one end of the screening box. A rotary motor is bolted to one end of the trough block, and a rotating shaft is mounted on one end of the rotary motor. A rolling bearing is mounted on one end of the rotating shaft, and a transmission gear is mounted on the rotating shaft. A transmission belt is laid and connected to the transmission gear, and a screen is bolted to one end of the transmission belt. A box body is mounted at the lower end of the screening box, and a support leg is welded to the lower end of the box body.

[0006] As a further preferred embodiment of this technical solution, the upper end of the screen is in contact with an inclined scraper, and the two ends of the inclined scraper are connected and fixed to the screening box by fixing bolts.

[0007] As a further preferred embodiment of this technical solution, the lower end of the screening box is connected and fixed to the guide post by screws. The guide post is installed inside the fixing sleeve. A spring is installed inside the fixing sleeve. The upper end of the spring is connected and fixed to the limiting block by screws. A connecting plate is installed at the lower end of the fixing sleeve. The lower end of the connecting plate is connected and fixed to the brush by heat fusion.

[0008] As a further preferred embodiment of this technical solution, the upper end of the trough is provided with a through hole groove, one end of the trough is connected and fixed by welding to the hinge sleeve, and a fixing rod is connected through the hinge sleeve, and the fixing rod is connected and fixed to the cover plate by welding.

[0009] As a further preferred embodiment of this technical solution, a carriage is placed at the lower end of the trough opening, one end of the carriage is connected to the pusher frame by welding, and the lower end of the carriage is connected and fixed to the fixing plate by welding.

[0010] As a further preferred embodiment of this technical solution, the lower end of the fixing plate is connected to a bracket, and the bracket is used to connect and fix the wheel by screws.

[0011] As a further preferred embodiment of this technical solution, the crushing wheel and the roller shaft are in contact with the first grinding block and the second grinding block, and the first grinding block and the second grinding block are connected and fixed inside the funnel by screws.

[0012] This utility model provides a screening device for PVC raw material production and processing, which has the following beneficial effects:

[0013] (1) This utility model utilizes a trough, a screen, a transmission belt, and transmission gears. When the screen rotates, it can effectively screen the crushed particles of silicon nitride raw materials. Smaller particles can flow into the interior of the box through the through holes of the screen, while larger particles cannot pass through. The rotation of the screen can effectively separate particles of different sizes. Larger particles will be discharged from the trough opening as the screen rotates, which can separate fine particles from coarse particles. It can effectively replace the vibrating screen of the vibrating motor to screen particles of different sizes. Then, by using an inclined scraper, the small particles of silicon nitride raw material crushed are blocked from flowing out of the trough opening, while the large particles are poured into the trough opening and flow out.

[0014] (2) By using the connecting plate, brush, guide post, fixing sleeve and spring, the particles inside the screen hole can be cleaned and cleared. By cleaning the stuck particles inside the screen hole, the screen hole can be prevented from being blocked, thereby maintaining the screening efficiency of the screen. This can reduce the downtime maintenance time caused by screen blockage, reduce the need for manual cleaning, and reduce labor and maintenance costs. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0016] Figure 2 This is an exploded view of the screening box structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the transmission toothed belt, transmission gear, and screen structure of this utility model.

[0018] Figure 4 This is a schematic diagram of the screen of this utility model from a second perspective;

[0019] Figure 5 for Figure 4 Enlarged view of part A in the middle;

[0020] Figure 6 This is an exploded view of the structure of the funnel, crushing wheel, and grinding block of this utility model;

[0021] In the diagram: 100, PVC raw material screening mechanism; 101, screening box; 102, funnel; 103, first gear; 104, second gear; 105, servo motor; 106, trough; 107, housing; 108, support leg; 109, trough block; 111, screen; 112, rotary motor; 113, hinge sleeve; 114, fixing rod; 115, cover plate; 116, through-hole groove; 118. 119. Fixing bolt; 120. Inclined scraper; 121. Rolling bearing; 122. Drive toothed belt; 123. Connecting plate; 124. Rotating shaft; 125. Drive gear; 126. Brush; 127. Fixing sleeve; 128. Spring; 129. Limiting block; 130. Guide post; 131. First roller shaft; 132. Second roller shaft; 133. Crushing wheel; 134. First grinding block; 135. Second grinding block. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0023] This utility model provides a technical solution: such as Figure 1-3 , Figure 6As shown in this embodiment, a screening device for PVC raw material production and processing includes a PVC raw material screening mechanism 100. The PVC raw material screening mechanism 100 includes a funnel 102. A first roller shaft 130 and a second roller shaft 131 are connected through the funnel 102. The outer sides of the first roller shaft 130 and the second roller shaft 131 are connected and fixed to a crushing wheel 132 by welding. One end of the first roller shaft 130 is connected and fixed by bolts. A first gear 103 is connected and fixed to a servo motor 105 by bolts. The teeth of the first gear 103 mesh with a second gear 104. The second gear 104 is connected and fixed to the second roller shaft 131 by bolts. The lower end of the funnel 102 is connected to the second roller shaft 131 by bolts. The screening box 101 has an opening inside. A groove block 109 is installed at one end of the screening box 101. The groove 106 is connected and fixed to one end of the screening box 101 by bolts. A rotary motor 112 is connected and fixed to one end of the groove 106 by bolts. A rotating shaft 123 is installed at one end of the rotary motor 112. A rolling bearing 120 is installed at one end of the rotating shaft 123. A transmission gear 124 is installed on the rotating shaft 123. A transmission toothed belt 121 is laid and connected to the transmission gear 124. A screen 111 is connected and fixed to one end of the transmission toothed belt 121 by screws. A box body 107 is installed at the lower end of the screening box 101. A support leg 108 is connected and fixed to the lower end of the box body 107 by welding.

[0024] like Figure 2 , Figure 3 As shown, the upper end of the screen 111 is in contact with an inclined scraper 119, which can block small particles of PVC raw material from flowing out of the trough 106, and can pour large PVC particles into the trough 106 and flow out. The two ends of the inclined scraper 119 are connected and fixed to the screening box 101 by fixing bolts 118.

[0025] The PVC raw material is poured into the funnel 102 by the operator. The servo motor 105 drives the first gear 103 and the first roller 130 to rotate. The first gear 103 drives the second gear 104 and the second roller 131 to rotate. The rotation of the first roller 130 and the second roller 131 drives the crushing wheel 132 to rotate, crushing the PVC material. The crushed PVC particles then enter the screening box 101. The drive motor 112 drives the transmission gear 124 to rotate, which in turn drives the transmission belt 121 to rotate, further rotating the screen 111. The PVC material then passes through the screen 111. When the screen rotates, small particles of PVC raw material are pulverized and flow into the interior of the housing 107 through the holes of the screen 111. At the same time, large particles of PVC raw material cannot pass through the screen 111. The large particles are then poured into the trough 106 through the rotating screen 111 for recycling and re-pulverization. By utilizing the trough 106, screen 111, transmission belt 121, and transmission gear 124, the pulverized particles of PVC raw material can be effectively screened when the screen 111 rotates. Smaller particles can flow into the interior of the housing 107 through the holes of the screen 111, while larger particles cannot pass through. The rotation of the screen 111 can achieve effective separation of particles of different sizes. Larger particles will be discharged from the opening of the trough 106 as the screen 111 rotates, which can separate fine particles from coarse particles. The vibrating screen 111 can effectively replace the vibrating motor to screen particles of different sizes. Then, by using the inclined scraper 119, the small particles of PVC raw material are crushed and blocked from flowing out of the opening of the trough 106, while the large particles are poured into the opening of the trough 106 and flow out.

[0026] like Figure 1-2 , Figure 3 , Figure 5-6As shown, the lower end of the screening box 101 is fixed to the guide post 129 by screws. The guide post 129 is installed inside the fixing sleeve 126. A spring 127 is installed inside the fixing sleeve 126. The upper end of the spring 127 is fixed to the limit block 128 by screws. A connecting plate 122 is installed at the lower end of the fixing sleeve 126. The lower end of the connecting plate 122 is fixed to the brush 125 by heat fusion. The upper end of the trough 106 has a through hole groove 116. One end of the trough 106 is fixed to the hinge sleeve 113 by welding. A fixing rod 114 is connected through the hinge sleeve 113. The fixing rod 114 is fixed to the cover plate 115 by welding. The trough 106... A carriage 204 is placed at the lower end of the funnel. One end of the carriage 204 is connected to the pusher frame 201 by welding. The lower end of the carriage 204 is connected to the fixing plate 203 by welding. The lower end of the fixing plate 203 is connected to the bracket 202. The bracket 202 is connected to the wheel 205 by screws. The crushing wheel 132 and the roller shaft are in contact with the first grinding block 133 and the second grinding block 134. The first grinding block 133 and the second grinding block 134 are made of wear-resistant metal material. The first grinding block 133 and the second grinding block 134 are connected and fixed to the inside of the funnel 102 by screws. The PVC raw material is fully crushed by the first grinding block 133 and the second grinding block 134 and the crushing wheel 132.

[0027] When the screen 111 operates for an extended period to screen PVC raw material pulverized particles, it can clear the particles stuck inside the screen 111's through holes. The brush 125 and connecting plate 122 come into contact with the screen 111, and the guide post 129 can move inside the fixed sleeve 126 due to the extension and contraction force of the spring 127. When the connecting plate 122 and brush 125 come into contact with the screen 111, they will move up and down. The elastic force of the spring 127 can clear the particles inside the screen 111's through holes. By utilizing the connecting plate 122, brush 125, guide post 129, fixed sleeve 126, and spring 127, the particles inside the screen 111's through holes can be cleared and unblocked. By clearing the particles stuck inside the screen 111's through holes, screen blockage can be prevented, thereby maintaining the screening efficiency of the screen 111, reducing downtime maintenance time caused by screen 111 blockage, and reducing the need for manual cleaning. Afterwards, when the operator needs to check the screen 111 of the trough 106, the fixed rod 114 inside the hinge sleeve 113 is rotated to open the cover plate 115, allowing the contents to flow out through the trough 106 and be collected through the carriage 204. The carriage is then moved by the wheels 205, which facilitates the re-crushing of large PVC raw material particles in the later stages.

[0028] This utility model provides a screening device for PVC raw material production and processing. The specific working principle is as follows: A worker pours PVC raw material into a funnel 102. A servo motor 105 drives the first gear 103 and the first roller 130 to rotate. The first gear 103 drives the second gear 104 and the second roller 131 to rotate. The rotation of the first roller 130 and the second roller 131 drives the crushing wheel 132 to rotate, crushing the PVC material. The crushed PVC particles then enter the screening box 101. A drive motor 112 drives the transmission gear 124 to rotate, which in turn drives the transmission belt 121 to rotate, further driving... As the screen 111 rotates, smaller particles of PVC raw material flow into the housing 107 through the holes in the screen 111. Meanwhile, larger particles cannot pass through the screen 111. These larger particles then pass through the opening of the trough 106 and are recycled for re-crushing. By utilizing the trough 106, screen 111, drive belt 121, and drive gear 124, the screen 111 can effectively screen the PVC raw material particles as it rotates. Smaller particles can pass through the holes in the screen 111 and flow into the housing 107, while larger particles cannot pass through. The rotation of the screen 111 effectively separates particles of different sizes. Larger particles are discharged from the trough 106 as the screen 111 rotates, separating fine and coarse particles. When the screen 111 operates for an extended period to screen PVC raw material pulverized particles, it can clear particles stuck inside the screen 111's through-holes. The brush 125 and connecting plate 122 contact the screen 111, and the guide post 129 can move inside the fixed sleeve 126 due to the extension and contraction force of the spring 127. When the connecting plate 122 and brush 125 are in contact with the screen 111, they move up and down. The spring force of the spring 127 clears and unblocks the particles inside the screen 111's through-holes. The connecting plate 122, brush 125, guide post 129, fixing sleeve 126, and spring 127 can clean and clear the particles inside the through holes of the screen 111. By cleaning the stuck particles inside the through holes of the screen 111, the screen holes can be prevented from becoming clogged. Afterwards, when the operator needs to check the screen 111 in the trough 106, the fixing rod 114 inside the hinge sleeve 113 is rotated, which can further open the cover plate 115, allowing the material to flow out through the outlet of the trough 106 and be further collected through the carriage 204. The wheels 205 facilitate the re-crushing of large PVC raw material particles in the later stage.

[0029] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A screening device for PVC raw material production and processing, comprising a PVC raw material screening mechanism (100), characterized in that: The PVC raw material screening mechanism (100) includes a funnel (102). A first roller shaft (130) and a second roller shaft (131) are connected through the inside of the funnel (102). The crushing wheel (132) is connected and fixed to the outside of the first roller shaft (130) and the second roller shaft (131) by welding. One end of the first roller shaft (130) is connected and fixed to a first gear (103) by bolts. The teeth of the first gear (103) are engaged with a second gear (104). The first gear (103) is connected and fixed to a servo motor (105) by bolts. The second gear (104) is connected and fixed to the second roller shaft (131) by bolts. The lower end of the funnel (102) is connected to a screening box (101) by bolts. The screening box (101) has an opening inside. One end of the screening box (101) is equipped with a trough block (109). One end of the screening box (101) is connected and fixed to the trough (106) by bolts. One end of the trough (106) is connected and fixed to the rotary electric motor (112) by bolts. One end of the rotary electric motor (112) is equipped with a rotating shaft (123). One end of the rotating shaft (123) is equipped with a rolling bearing (120). A transmission gear (124) is installed on the rotating shaft (123). The transmission gear (124) is connected to the transmission toothed belt (121) by laying and mating. One end of the transmission toothed belt (121) is connected and fixed to the screen (111) by screws. The lower end of the screening box (101) is equipped with a box body (107). The lower end of the box body (107) is connected and fixed to the support leg (108) by welding.

2. The screening device for PVC raw material production and processing according to claim 1, characterized in that: The upper end of the screen (111) is in contact with an inclined scraper (119), and the two ends of the inclined scraper (119) are connected and fixed to the screening box (101) by fixing bolts (118).

3. A screening device for PVC raw material production and processing according to claim 1, characterized in that: The lower end of the screening box (101) is connected and fixed with the guide post (129) by screws. The guide post (129) is installed inside the fixing sleeve (126). The fixing sleeve (126) is equipped with a spring (127). The upper end of the spring (127) is connected and fixed with the limit block (128) by screws. The lower end of the fixing sleeve (126) is equipped with a connecting plate (122). The lower end of the connecting plate (122) is connected and fixed with the brush (125) by heat fusion.

4. A screening device for PVC raw material production and processing according to claim 3, characterized in that: The upper end of the trough (106) is provided with a through hole groove (116). One end of the trough (106) is connected and fixed to the hinge sleeve (113) by welding. The interior of the hinge sleeve (113) is connected by a fixing rod (114), and the fixing rod (114) is connected and fixed to the cover plate (115) by welding.

5. A screening device for PVC raw material production and processing according to claim 1, characterized in that: A carriage (204) is placed at the lower end of the trough (106). One end of the carriage (204) is connected to the pusher frame (201) by welding, and the lower end of the carriage (204) is connected to and fixed to the fixing plate (203) by welding.

6. A screening device for PVC raw material production and processing according to claim 5, characterized in that: The lower end of the fixing plate (203) is connected to a bracket (202), and the bracket (202) connects and fixes the wheel (205) by screws.

7. A screening device for PVC raw material production and processing according to claim 1, characterized in that: The crushing wheel (132) and the roller shaft are in contact with the first grinding block (133) and the second grinding block (134), and the first grinding block (133) and the second grinding block (134) are connected and fixed inside the funnel (102) by screws.

Images