A screening device for producing granular zinc stearate

Abstract

This invention discloses a screening device for the production of granular zinc stearate, comprising two screening mechanisms connected by a drive mechanism. The inner walls of the top of each screening mechanism are connected to a three-way conveying pipe, which includes one inlet and two outlets. Each outlet is equipped with a solenoid valve. A support cover is connected to one outer wall of each screening mechanism. Each screening mechanism includes a screening box with a square hole penetrating it. One end of each square hole is tightly connected to a blower, with the blower's output facing into the screening box. The other end of each square hole is tightly connected to a valve, and a large particle collection box and a small particle collection box are sequentially arranged on one side of the valve. This screening device for the production of granular zinc stearate effectively improves screening efficiency while meeting the screening requirements for granular zinc stearate, making it more suitable for large-scale screening.

Description

Technical Field

[0001] This invention relates to the field of granular zinc stearate production technology, and more particularly to a screening device for granular zinc stearate production. Background Technology

[0002] Zinc stearate is an organic compound with the chemical formula C. 36 H 70 O4Zn is a white powder, insoluble in water. It is mainly used as a lubricant and release agent for styrene resins, phenolic resins, and amine resins. It also functions as a vulcanizing activator and softener in rubber.

[0003] During the production of granular zinc stearate, its size is difficult to control, resulting in a mixture of zinc stearate particles of varying sizes. While there are certain requirements for particle diameter during the use of zinc stearate, although these requirements are not extremely strict, smaller diameter particles cannot meet the usage specifications. Without screening, the inconsistent particle sizes will lower the market quality of the zinc stearate. Screening is generally done using sieves, but this method is inefficient for large-scale screening of zinc stearate. Summary of the Invention

[0004] This invention discloses a screening device for the production of granular zinc stearate, which aims to solve the technical problem that most screening methods use screens for screening, but the screening efficiency cannot be improved when screening large quantities of zinc stearate.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A screening device for the production of granular zinc stearate includes two screening mechanisms connected by a drive mechanism. The inner walls of the top of the two screening mechanisms are connected to a three-way conveying pipe. The three-way conveying pipe includes one inlet and two outlets. Solenoid valves are respectively installed on the two outlets. A support cover is connected to one outer wall of each of the two screening mechanisms.

[0007] Each of the screening mechanisms includes a screening box, and a square hole is passed through the screening box. One end of the square hole is tightly connected to a fan, and the output end of the fan faces into the screening box. The other end of the square hole is tightly connected to a valve, and a large particle collection box and a small particle collection box are arranged sequentially on one side of the valve.

[0008] Each screening box is movably connected to a tray, and the outer wall of the tray is attached to the inner wall of the screening box. The inner wall of the screening box is fixedly connected to a partition below the tray. Multiple limiting rods are symmetrically fixedly connected to the bottom outer wall of the tray, and the multiple limiting rods pass through the partition at the same time. The bottom outer wall of the tray and the top outer wall of the partition are simultaneously connected to a second spring, and the bottom outer walls of the two trays are simultaneously connected to the drive mechanism.

[0009] The system is equipped with a screening mechanism. Material is fed into the screening box through a three-way conveyor pipe. A drive mechanism pulls down a tray, and then, under the elastic action of a second spring, the granular zinc stearate particles in the tray bounce up. This step is repeated twice for the initial screening. During the bounce, heavier particles fall before lighter particles. After the initial screening, the mixed particles will be arranged in a state where larger particles are mostly at the bottom and smaller particles are mostly at the top within the screening box. Then, a valve is opened, revealing a square opening, and simultaneously... Repeat the popping step and turn on the fan. The popped particles are more regular than the first pop. When the larger particles are popped by the same force, they are basically located at the lower position, which avoids obstructing the smaller particles when the air blows. Since the heavier particles will travel a shorter distance than the smaller particles under the same air force, the larger particles enter the large particle collection box and the smaller particles enter the small particle collection box to complete the screening. With this screening structure, the screening requirements of granular zinc stearate can be met while effectively improving the screening efficiency, making it more suitable for large-scale screening.

[0010] In a preferred embodiment, the drive mechanism includes two ratchets with their teeth facing opposite directions. The two ratchets are connected by a support shaft, and bearing seats are connected to both ends of the support shaft. Each ratchet has a slot. A base frame is fixedly connected to the bottom of both bearing seats, and a servo motor is fixedly connected to the base frame. The output end of the servo motor is fixedly connected to one end of the support shaft. Connecting rods are fixedly connected to opposite sides of the outer walls of the bottom of the two trays, and multiple limiting support plates are fixedly connected at equal density to one side of the outer wall of the connecting rod. A connecting rod is provided on one side of each of the multiple limiting support plates. Multiple levers are movably hinged to the connecting rods through the multiple connecting rods, and the bottom ends of the multiple levers are in contact with the top ends of the limiting support plates. A first spring is provided between the bottom end of each lever and the inner wall of the top end of the limiting support plate.

[0011] By setting a drive mechanism, the two screening mechanisms can be switched between using a single servo motor by adjusting the forward and reverse rotation time. With the help of solenoid valve control, reaction time is provided for feeding, ensuring uninterrupted screening and further improving work efficiency.

[0012] In a preferred embodiment, the large particle collection box includes a large particle collection box body, and multiple insert rods are arranged at equal density on the inner wall of the bottom end of the large particle collection box body. The spacing between each insert rod is less than the specified diameter of zinc stearate. A perforated plate is laid on the inner wall of the bottom end of the large particle collection box body, and the multiple insert rods pass through the perforated plate. A pull rope is fixedly connected to the outer wall of the top end of the perforated plate. The small particle collection box includes a small particle collection box body, and an insert plate is inserted into the small particle collection box body. A handle is connected to one outer wall of the insert plate, and the insert plate passes through the large particle collection box body and contacts the top ends of the multiple insert rods.

[0013] By setting up large particle collection boxes and small particle collection boxes, the large particle collection box may simultaneously collect small particles that have fallen due to unstable factors while collecting large particles. By setting up multiple insert rods, secondary filtration can be performed. Small particles fall between the insert rods, while large particles float above the insert rods, ensuring thorough filtration. In addition, the insert plates, while serving as a platform for small particles, can also scoop up large particles above the multiple insert rods by shifting, thereby improving the collection efficiency of large particles.

[0014] As described above, a screening device for producing granular zinc stearate includes two screening mechanisms connected by a drive mechanism. The inner walls of the tops of both screening mechanisms are connected to a three-way conveying pipe, which includes one inlet and two outlets. Each outlet is equipped with a solenoid valve. Support covers are connected to the outer walls of one side of each screening mechanism. Each screening mechanism includes a screening box with a square hole penetrating it. One end of each square hole is tightly connected to a blower, and the blower's output end faces... Inside the screening chamber, a valve is tightly connected to the other end of a square hole, and a large particle collection box and a small particle collection box are sequentially arranged on one side of the valve. A tray is movably connected inside each screening chamber, and the outer wall of the tray is fitted against the inner wall of the screening chamber. A partition is fixedly connected to the inner wall of the screening chamber below the tray. Multiple limiting rods are symmetrically fixedly connected to the bottom outer wall of the tray, and these limiting rods simultaneously pass through the partition. A second spring is connected to both the bottom outer wall of the tray and the top outer wall of the partition, and the bottom outer walls of both trays are simultaneously connected to a drive mechanism. The screening device for granular zinc stearate production provided by this invention has the technical effect of meeting the screening requirements for granular zinc stearate while effectively improving screening efficiency, making it more suitable for large-scale screening. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a screening device for the production of granular zinc stearate proposed in this invention.

[0016] Figure 2This is a rear view schematic diagram of the internal structure of the support cover of a screening device for the production of granular zinc stearate proposed in this invention.

[0017] Figure 3 This is a schematic diagram of part of the screening mechanism and drive mechanism of a screening device for the production of granular zinc stearate proposed in this invention.

[0018] Figure 4 This is a schematic diagram showing the disassembled structure of the drive mechanism of a screening device for the production of granular zinc stearate proposed in this invention.

[0019] Figure 5 This is a cross-sectional view of the large particle collection box and the small particle collection box of a screening device for the production of granular zinc stearate proposed in this invention.

[0020] In the diagram: 1. Drive mechanism; 2. Screening mechanism; 3. Three-way conveying pipe; 4. Solenoid valve; 5. Support cover; 11. Base frame; 12. Bearing seat; 13. Servo motor; 14. Ratchet; 15. Connecting upright; 16. Support shaft; 17. Empty trough; 18. Limiting support plate; 19. Spring; 110. Connecting rod; 111. Pulley; 21. Fan; 22. Screening box; 23. Valve; 24. Large particle collection box; 25. Small particle collection box; 26. Tray; 27. Limiting rod; 28. Partition plate; 29. ​​Second spring; 241. Large particle collection box; 242. Pull rope; 243. Perforated plate; 244. Insert rod; 251. Small particle collection box; 252. Handle; 253. Insert plate. Detailed Implementation

[0021] 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. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0022] The screening device for the production of granular zinc stearate disclosed in this invention is mainly used in the screening of granular zinc stearate.

[0023] Reference Figures 1-3 A screening device for the production of granular zinc stearate includes two screening mechanisms 2, which are connected by a drive mechanism 1. The inner walls of the top of the two screening mechanisms 2 are connected to a three-way conveying pipe 3. The three-way conveying pipe 3 includes one inlet and two outlets. Solenoid valves 4 are respectively installed on the two outlets. A support cover 5 is connected to one side of the outer wall of the two screening mechanisms 2.

[0024] Each screening mechanism 2 includes a screening box 22, and a square hole is passed through the screening box 22. One end of the square hole is tightly connected to a blower 21, and the output end of the blower 21 faces the inside of the screening box 22. The other end of the square hole is tightly connected to a valve 23, and a large particle collection box 24 and a small particle collection box 25 are arranged sequentially on one side of the valve 23.

[0025] Each screening chamber 22 is movably connected to a tray 26, with the outer wall of the tray 26 fitting against the inner wall of the screening chamber 22. A partition 28 is fixedly connected to the inner wall of the screening chamber 22 below the tray 26. Multiple limiting rods 27 are symmetrically fixedly connected to the bottom outer wall of the tray 26, and these rods pass through the partition 28. A second spring 29 is connected to both the bottom outer wall of the tray 26 and the top outer wall of the partition 28. The bottom outer walls of both trays 26 are simultaneously connected to the drive mechanism 1. In the screening mechanism 2, material is fed into the screening chamber 22 through a three-way feed pipe 3. The drive mechanism 1 then pulls down the tray 26, causing the granular zinc stearate in the tray 26 to bounce up under the elastic action of the second spring 29. This step is repeated twice for the initial screening. During the bounce process, the heavier material... The larger particles fall before the lighter particles. After the initial screening, the mixed particles will be in a state where the larger particles are mostly located at the bottom and the smaller particles are mostly located at the top in the screening box 22. Then, the control valve 23 is opened to expose the square hole, and the bounce step is repeated simultaneously. At the same time, the blower 21 is turned on. The bounced particles are more regular than the initial bounce. When the larger particles after stratification bounce with the same force, they are basically located at the lower position, which avoids obstructing the smaller particles when blowing. Since the heavier particles will have a shorter distance than the smaller particles under the same wind force, the larger particles enter the large particle collection box 24 and the smaller particles enter the small particle collection box 25 to complete the screening. Under this screening structure, while meeting the screening requirements of granular zinc stearate, the screening efficiency can also be effectively improved, making it more suitable for large-scale screening.

[0026] Reference Figure 3 and Figure 4 In a preferred embodiment, the drive mechanism 1 includes two ratchet wheels 14, with the teeth of the two ratchet wheels 14 arranged in opposite directions. The two ratchet wheels 14 are connected by a support shaft 16, and the two ends of the support shaft 16 are respectively connected to bearing seats 12. Each ratchet wheel 14 is provided with a slot 17.

[0027] Reference Figure 3 and Figure 4 In a preferred embodiment, the bottom ends of the two bearing seats 12 are simultaneously fixedly connected to the base frame 11, and the base frame 11 is fixedly connected to the servo motor 13, the output end of the servo motor 13 is fixedly connected to one end of the support shaft 16.

[0028] Reference Figure 4In a preferred embodiment, connecting rods 15 are fixedly connected to opposite sides of the bottom outer walls of the two trays 26, and multiple limiting support plates 18 are fixedly connected at equal density to one side of the outer wall of the connecting rods 15, with connecting rods 110 provided on one side of each of the multiple limiting support plates 18.

[0029] Reference Figure 4 In a preferred embodiment, the connecting rod 15 is movably hinged to multiple levers 111 via multiple connecting rods 110, and the bottom ends of the levers 111 contact the top end of the limiting support plate 18. A first spring 19 is provided between the bottom end of each lever 111 and the inner wall of the top end of the limiting support plate 18. The synchronous rotation of the two ratchet wheels 14 is achieved by the servo motor 13 driving the support shaft 16 to rotate. When one of the ratchet wheels 14 rotates forward and contacts the multiple levers 111, the limiting support plate 18 ensures that the ratchet wheel 14 and the lever 111 are engaged with each other, thereby driving the connecting rod 15. The entire tray 26 is moved downwards. When it contacts the empty slot 17 on the ratchet 14, the pry block 111 disengages from the ratchet 14, thus achieving reciprocating motion. Since the teeth of the two ratchets 14 are set in opposite directions, when one ratchet 14 rotates forward, the other ratchet 14 rotates in reverse. In the reverse state, it does not engage with the pry block 111. In this structure, the switching between the two screening mechanisms 2 can be achieved by setting the forward and reverse rotation time of a single servo motor 13. With the help of the control of the solenoid valve 4, reaction time is provided for feeding, ensuring the uninterrupted operation of the screening step and further improving work efficiency.

[0030] Reference Figure 5 In a preferred embodiment, the large particle collection box 24 includes a large particle collection box body 241, and a plurality of insert rods 244 are provided at equal density on the inner wall of the bottom end of the large particle collection box body 241, and the spacing between each insert rod 244 is less than the specified diameter of zinc stearate.

[0031] Reference Figure 5 In a preferred embodiment, a perforated plate 243 is laid on the inner wall of the bottom end of the large particle collection box 241, and multiple insert rods 244 pass through the perforated plate 243. A pull rope 242 is fixedly connected to the outer wall of the top end of the perforated plate 243.

[0032] Reference Figure 5In a preferred embodiment, the small particle collection box 25 includes a small particle collection box body 251, and an insert plate 253 is inserted inside the small particle collection box body 251. A handle 252 is connected to one outer wall of the insert plate 253, and the insert plate 253 also passes through the large particle collection box body 241 and contacts the tops of multiple insert rods 244. When the large particle collection box 24 collects large particles, it may simultaneously collect small particles that have fallen due to unstable factors. By setting multiple insert rods 244, secondary filtration can be performed. Small particles fall between the insert rods 244, while large particles float above the insert rods 244, ensuring thorough filtration. In addition, the insert plate 253, while serving as a platform for small particles, can also be moved to scoop up large particles above the multiple insert rods 244, thereby improving the collection efficiency of large particles.

[0033] Working principle: During operation, material is fed into the screening box 22 through the three-way conveying pipe 3 in the screening mechanism 2. Then, the drive mechanism 1 pulls down the tray 26. Under the elastic action of the second spring 29, the granular zinc stearate in the tray 26 bounces up. This step is repeated twice as the initial screening. During the bounce, the heavier particles will fall before the lighter particles. After the initial screening, the mixed particles will be in a state where large particles are mostly located in the lower layer and small particles are mostly located in the upper layer in the screening box 22. Then, the control valve 23 is opened to expose the square hole, and the bounce step is repeated simultaneously. At the same time, the blower 21 is turned on. The particles bounce more regularly than initially. After stratification, larger particles, when bounced by the same force, are generally positioned at the lower end, preventing obstruction of smaller particles during airflow. Since heavier particles travel a shorter distance than smaller particles under the same wind force, larger particles enter the large particle collection box 24, while smaller particles enter the small particle collection box 25 for sieving. This sieving structure satisfies the sieving requirements for granular zinc stearate while effectively improving sieving efficiency, making it more suitable for large-volume sieving. During the drive process, the servo motor 13 drives the support shaft 16 to rotate, achieving synchronous rotation of the two ratchet wheels 14. When one ratchet wheel 14 rotates forward... When the ratchet 14 moves and contacts multiple paddle blocks 111, the limiting support plate 18 ensures that the ratchet 14 and the paddle blocks 111 are engaged with each other. This drives the connecting rod 15 to move the entire tray 26 downward. When the paddle block 111 contacts the empty groove 17 on the ratchet 14, it disengages from the ratchet 14, thus achieving reciprocating motion. Since the teeth of the two ratchet 14 are set in opposite directions, when one ratchet 14 rotates forward, the other ratchet 14 rotates in reverse. In the reverse rotation state, it does not engage with the paddle blocks 111. Therefore, in this structure, the switching between the two screening mechanisms 2 can be achieved by setting the forward and reverse rotation time of a single servo motor 13. With the help of the control of the solenoid valve 4, the feeding reaction time is provided to ensure the uninterrupted operation of the screening step and further improve the work efficiency. After the particles are collected, the large particle collection box 24 may collect small particles that have fallen due to unstable factors. By setting multiple insert rods 244, secondary filtration can be performed. Small particles fall between the insert rods 244, while large particles float above the insert rods 244, ensuring thorough filtration. In addition, the insert plate 253, while serving as a platform for small particles, can also scoop up large particles above the multiple insert rods 244 by shifting, thereby improving the collection efficiency of large particles.

[0034] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A screening device for the production of granular zinc stearate, comprising two screening mechanisms (2), characterized in that, The two screening mechanisms (2) are connected by a drive mechanism (1), and the inner walls of the top of the two screening mechanisms (2) are connected to a three-way conveying pipe (3). The three-way conveying pipe (3) includes an inlet and two outlets, and a solenoid valve (4) is provided on each of the two outlets. A support cover (5) is connected to one side of the outer wall of the two screening mechanisms (2). Each of the screening mechanisms (2) includes a screening box (22), and a square hole is passed through the screening box (22). One end of the square hole is tightly connected to a blower (21), and the output end of the blower (21) faces into the screening box (22). The other end of the square hole is tightly connected to a valve (23), and a large particle collection box (24) and a small particle collection box (25) are arranged sequentially on one side of the valve (23). Each screening box (22) is movably connected to a tray (26), and the outer wall of the tray (26) is attached to the inner wall of the screening box (22). The inner wall of the screening box (22) is fixedly connected to a partition (28) below the tray (26). Multiple limiting rods (27) are symmetrically fixedly connected to the bottom outer wall of the tray (26), and the multiple limiting rods (27) pass through the partition (28) at the same time. The bottom outer wall of the tray (26) and the top outer wall of the partition (28) are simultaneously connected to a second spring (29), and the bottom outer walls of the two trays (26) are simultaneously connected to the drive mechanism (1). The drive mechanism (1) includes two ratchet wheels (14), and the teeth of the two ratchet wheels (14) are set in opposite directions. The two ratchet wheels (14) are connected by a support shaft (16), and the two ends of the support shaft (16) are respectively connected to bearing seats (12). Each ratchet wheel (14) is provided with a slot (17).

2. The screening device for producing granular zinc stearate according to claim 1, characterized in that, The bottom ends of the two bearing seats (12) are fixedly connected to the base frame (11), and the base frame (11) is fixedly connected to the servo motor (13). The output end of the servo motor (13) is fixedly connected to one end of the support shaft (16).

3. A screening device for the production of granular zinc stearate according to claim 2, characterized in that, Connecting rods (15) are fixedly connected to the opposite sides of the bottom outer walls of the two trays (26), and multiple limiting support plates (18) are fixedly connected to one side of the outer wall of the connecting rods (15) at equal density, and connecting rods (110) are provided on one side of the multiple limiting support plates (18).

4. A screening device for the production of granular zinc stearate according to claim 3, characterized in that, The connecting rod (15) is movably hinged to multiple levers (111) via multiple connecting rods (110), and the bottom end of the multiple levers (111) is in contact with the top end of the limiting support plate (18). A first spring (19) is provided between the bottom end of each lever (111) and the inner wall of the top end of the limiting support plate (18).

5. A screening device for the production of granular zinc stearate according to claim 1, characterized in that, The large particle collection box (24) includes a large particle collection box body (241), and the bottom inner wall of the large particle collection box body (241) is provided with multiple insert rods (244) at equal density, and the spacing between each insert rod (244) is less than the specified diameter of zinc stearate.

6. A screening device for the production of granular zinc stearate according to claim 5, characterized in that, The bottom inner wall of the large particle collection box (241) is covered with a perforated plate (243), and multiple insert rods (244) pass through the perforated plate (243). A pull rope (242) is fixedly connected to the top outer wall of the perforated plate (243).

7. A screening device for the production of granular zinc stearate according to claim 6, characterized in that, The small particle collection box (25) includes a small particle collection box body (251), and a plate (253) is inserted inside the small particle collection box body (251). A handle (252) is connected to one side of the outer wall of the plate (253), and the plate (253) passes through the large particle collection box body (241) and contacts the top of multiple rods (244).

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