A phosphonate flame retardant finished product anti-bonding screening and conveying device

Abstract

The present application relates to the technical fields of phosphate ester flame retardant, and disclose a kind of phosphate ester flame retardant finished product anti-bonding screening conveying device, including lower hopper and the filter plate of fixed connection in lower hopper, still include: feeding part, the feeding part is installed on lower hopper;Vibration part, the vibration part is installed on filter plate;Cleaning part, the cleaning part is set on lower hopper;Scattering part, the scattering part is set above filter plate;The vibration part includes vibration assembly, and the vibration assembly is set on filter plate;Power assembly, the power assembly is installed on lower hopper.The present application is by being arranged vibration part, has solved the anti-bonding screening conveying device in the prior art in the process of use, not convenient to break the situation of material caking blockage, leading to material easy to accumulate and block screen surface, material screening speed is slow, screen surface is easy to continue to block material, difficult to maintain unobstructed screening state, screening operation stability is poor, to cause the problem of low overall screening efficiency.

Description

Technical Field

[0001] This invention relates to the field of phosphate ester flame retardant technology, specifically to a phosphate ester flame retardant finished product anti-sticking screening and conveying device. Background Technology

[0002] With the continuous development of downstream industries such as polymer materials, architectural coatings, and rubber and plastic products, the flame retardant materials industry is undergoing rapid upgrading. Environmentally friendly halogen-free flame retardant additives have become the mainstream development direction in the market. Phosphate ester flame retardants, with their characteristics of low smoke and low toxicity, excellent thermal stability, and outstanding compatibility with various resin substrates, have seen their market application scale continue to expand. The finished phosphate ester flame retardant particles themselves have a slight stickiness. Screening and conveying are key processes for controlling the uniformity of finished particles and removing unqualified clumps. The operating status of this process directly determines the purity of the finished product and the overall product quality. In order to properly solve the problem of material adhesion and blockage and ensure continuous and stable production, the industry needs a special anti-adhesion screening and conveying device for finished phosphate ester flame retardant products to efficiently complete the grading, screening, and continuous transfer of finished materials.

[0003] However, existing anti-sticking screening and conveying devices are not easy to break up material agglomerates during use, which leads to material accumulation and blockage of the screen surface, slow material passing speed, continuous material blockage on the screen surface, difficulty in maintaining smooth screening, poor screening operation stability, and thus low overall screening efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a phosphate ester flame retardant finished product anti-sticking screening and conveying device. By setting up a vibrating part, it solves the problem that existing anti-sticking screening and conveying devices are not easy to break up material agglomerates and blockages during use, which leads to material accumulation and blockage of the screen surface, slow material passing speed, continuous material blockage of the screen surface, difficulty in maintaining smooth screening, poor screening operation stability, and thus low overall screening efficiency.

[0005] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: This invention relates to a screening and conveying device for preventing the sticking of finished phosphate ester flame retardant products. It includes a hopper and a filter plate fixedly connected within the hopper, and further comprises: a feeding section mounted on the hopper; a vibrating section mounted on the filter plate; a cleaning section located on the hopper; and a dispersing section located above the filter plate. The vibrating section includes a vibrating assembly mounted on the filter plate; and a power assembly mounted on the hopper. The vibrating assembly includes two sliding rods fixedly connected to the bottom of the filter plate, with a cylindrical cover slidably connected to the outer wall of each sliding rod. An impact block is fixedly connected to the top of the cylindrical cover. A drive wheel is installed inside the cylindrical cover. Two transmission rods are fixedly connected to the inner wall of the cylindrical cover, and support members are installed on the two sliding rods. The top of the impact block contacts the bottom of the filter plate. The support member includes a support ring sleeved on the outer wall of the rotating shaft. The support ring is fixedly connected to the two sliding rods. A spring is sleeved on the outer wall of the rotating shaft. The top of the spring is fixedly connected to the cylindrical cover, and the bottom of the spring is fixedly connected to the support ring. A telescopic protective sleeve is sleeved on the spring. The top of the telescopic protective sleeve is fixedly connected to the cylindrical cover, and the bottom of the telescopic protective sleeve is fixedly connected to the support ring. The spring and the telescopic protective sleeve are both located between the cylindrical cover and the support ring.

[0006] Furthermore, the feeding unit includes a support frame fixedly connected to the outer wall of the hopper, a bracket is provided on the right side of the hopper, and a conveyor is fixedly connected to the bracket; the conveyor is connected to the hopper.

[0007] Furthermore, the cleaning unit includes a cleaning component mounted on the hopper; an extrusion component disposed on the power component; and the cleaning component located on the inclined surface of the hopper.

[0008] Furthermore, the dispersing section includes a circular ring disposed on the top of the filter plate, and a plurality of dispersing rods are fixedly connected to the outer wall of the circular ring; four dispersing rods are provided and arranged in a circumferential array.

[0009] Furthermore, the power assembly includes a support plate fixedly connected to the top of the hopper, a rotating shaft passing through the support plate and rotatably connected to the support plate, the bottom of the rotating shaft passing through the filter plate and extending outward, the rotating shaft contacting the filter plate, the bottom of the rotating shaft passing through an impact block and a cylindrical cover, the rotating shaft contacting the impact block and the cylindrical cover, the outer wall of the rotating shaft being fixedly connected to the inner wall of the drive wheel, and a power component being provided on the support plate; a circular ring is fitted onto the outer wall of the rotating shaft and fixedly connected to the rotating shaft, the power component including a motor fixedly connected to the top of the support plate, the output shaft of the motor being fixedly connected to the rotating shaft via a coupling.

[0010] Furthermore, the cleaning assembly includes a plurality of hollow cylindrical rods fixedly connected to the inner wall of the hopper. A circular limiting plate is slidably connected inside each of the hollow cylindrical rods. A cylindrical rod is fixedly connected to the top of each of the circular limiting plates. The tops of the cylindrical rods extend outside the hollow cylindrical rods. Each cylindrical rod is slidably connected to the hollow cylindrical rod. A protrusion is fixedly connected to the top of each of the cylindrical rods. An elastic element is disposed inside each of the hollow cylindrical rods. Four hollow cylindrical rods are provided and arranged in a circumferential array. The elastic element includes two springs respectively disposed inside each of the hollow cylindrical rods. The tops of each of the two springs are fixedly connected to the circular limiting plates, and the bottoms of each of the two springs are fixedly connected to the hollow cylindrical rods. Four springs are provided.

[0011] Furthermore, the extrusion assembly includes a cross bracket fixedly connected to the outer wall of the rotating shaft, and a plurality of extrusion protrusions are fixedly connected to the bottom of the cross bracket; four extrusion protrusions are provided and arranged in a circumferential array.

[0012] Furthermore, the conveyor used in this device is an LSY114 screw conveyor. Its working principle is as follows: after the drive motor of the equipment is started, the power is stably transmitted to the screw main shaft inside the machine body, driving the main shaft and the integrally formed screw blades to rotate synchronously and uniformly. The phosphate ester flame retardant material to be conveyed falls smoothly into the closed shell space through the feed hopper. The rotating screw blades continuously apply a stable axial thrust to the material. Relying on the screw pushing action of the blades, the material is driven to rise steadily upward along the inclined shell. The material moves in an orderly manner in the closed pipeline until it is conveyed to the top of the shell and then discharged from the outlet. The entire conveying process is completed in a closed environment, which can effectively prevent fine powder from drifting outward, avoid dust pollution at the work site, and ensure continuous and smooth material conveying.

[0013] The present invention has the following beneficial effects: (1) By setting up a vibration part, when the rotating shaft is running, it drives the drive wheel to rotate. The blades of the drive wheel push the transmission rod to move down. The transmission rod drives the cylindrical cover to slide down smoothly along the slide rod. Simultaneously, it squeezes the spring and the telescopic protective sleeve to accumulate elastic force. The telescopic protective sleeve isolates the material and protects the spring. After the blades rotate past the transmission rod, the spring rebounds and drives the cylindrical cover and the impact block to reset and strike the filter plate, causing the filter plate to vibrate and complete the efficient screening of the material. It can periodically form a vibration impact on the screening components, break the blockage of material agglomeration, speed up the screening speed, continuously maintain the smooth screening state, and ensure the continuous, stable and efficient operation of the screening operation. (2) By setting up a cleaning section, the rotating shaft is driven by a cross bracket to continuously squeeze the protrusion. The protrusion is pushed by a cylindrical rod to move the circular limiting plate down along the hollow cylindrical rod and compress the second spring to store the elastic force. After the protrusion is separated from the protrusion, the second spring rebounds and drives the circular limiting plate to hit the hollow cylindrical rod to generate vibration. The vibration is transmitted to the feeding hopper, so that the inclined surface of the feeding hopper vibrates continuously, preventing the finished product of phosphate flame retardant from accumulating and stagnating. It continuously applies periodic vibration to the feeding area, avoids the material from adhering and accumulating on the feeding inclined surface, ensures that the material is smoothly conveyed downward, ensures the continuous and uninterrupted operation of the feeding process, and improves the smoothness of the whole set of screening and conveying operations. (3) By setting up a dispersing section, the finished phosphate flame retardant is poured into the hopper and the motor is started to drive the rotating shaft to rotate. The rotating shaft drives four dispersing rods to make circular motion through the circular ring, which disperses and spreads the material. Then, it works with the filter plate to complete the finished product screening operation, disperses the agglomerated material, avoids the material from agglomerating and blocking the screening position, improves the material dispersion uniformity, optimizes the screening transparency, effectively separates the agglomerated material from the qualified finished product, ensures the screening purity, and at the same time makes the material spread more evenly and reduces the accumulation and blockage of the screen.

[0014] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

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

[0016] Figure 1 This is a partial cross-sectional view of the present invention; Figure 2 This is a schematic diagram of the overall structure of the present invention; Figure 3 This is a partial cross-sectional view of the vibration section of the present invention; Figure 4 For the present invention Figure 3 A magnified structural diagram of A in the middle; Figure 5 This is a partial cross-sectional view of the vibration assembly of the present invention; Figure 6 This is a partial cross-sectional view of the cleaning section of the present invention; Figure 7 For the present invention Figure 6 A magnified structural diagram of A in the middle; Figure 8 This is a partial cross-sectional view of the dispersing section of the present invention.

[0017] The attached diagram lists the components represented by each number as follows: In the diagram: 1. Feeding section; 111. Hopper; 112. Filter plate; 113. Support frame; 114. Bracket; 115. Conveyor; 2. Vibration section; 21. Vibration assembly; 211. Slide rod; 212. Cylindrical cover; 213. Impact block; 214. Drive wheel; 215. Transmission rod; 216. Support ring; 217. Spring 1; 218. Telescopic protective sleeve; 22. Power assembly; 221. Support plate; 222. Rotating shaft; 223. Motor; 3. Cleaning section; 31. Cleaning assembly; 311. Hollow cylindrical rod; 312. Circular limit plate; 313. Cylindrical rod; 314. Protrusion; 315. Spring 2; 32. Extrusion assembly; 321. Cross bracket; 322. Extrusion protrusion; 4. Dispersing section; 411. Circular ring; 412. Dispersing rod. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Please see Figures 1-8 As shown, the present invention is a screening and conveying device for anti-sticking of finished phosphate ester flame retardant products, including a hopper 111 and a filter plate 112 fixedly connected inside the hopper 111. It also includes: a feeding section 1 installed on the hopper 111; a vibration section 2 installed on the filter plate 112; a cleaning section 3 installed on the hopper 111; and a dispersing section 4 located above the filter plate 112. The feeding section 1 includes a support frame 113 fixedly connected to the outer wall of the hopper 111. A bracket 114 is provided on the right side of the hopper 111, and a conveyor 115 is fixedly connected to the bracket 114. The conveyor 115 is connected to the hopper 111.

[0020] The vibrating unit 2 includes a vibrating assembly 21, which is mounted on the filter plate 112; and a power assembly 22, which is mounted on the hopper 111. The vibrating assembly 21 includes two sliding rods 211 fixedly connected to the bottom of the filter plate 112. A cylindrical cover 212 is slidably connected to the outer wall of the two sliding rods 211. An impact block 213 is fixedly connected to the top of the cylindrical cover 212. A drive wheel 214 is provided inside the cylindrical cover 212. Two transmission rods 215 are fixedly connected to the inner wall of the cylindrical cover 212. Support members are provided on the two sliding rods 211. The impact block 21... The top of the 3 contacts the bottom of the filter plate 112. The support includes a support ring 216 sleeved on the outer wall of the rotating shaft 222. The support ring 216 is fixedly connected to two sliding rods 211. A spring 217 is sleeved on the outer wall of the rotating shaft 222. The top of the spring 217 is fixedly connected to the cylindrical cover 212, and the bottom of the spring 217 is fixedly connected to the support ring 216. A telescopic protective sleeve 218 is sleeved on the spring 217. The top of the telescopic protective sleeve 218 is fixedly connected to the cylindrical cover 212, and the bottom of the telescopic protective sleeve 218 is fixedly connected to the support ring 216. Both 217 and the telescopic protective sleeve 218 are located between the cylindrical cover 212 and the support ring 216. The power assembly 22 includes a support plate 221 fixedly connected to the top of the hopper 111. A rotating shaft 222 passes through the support plate 221 and is rotatably connected to the support plate 221. The bottom of the rotating shaft 222 passes through the filter plate 112 and extends outward, contacting the filter plate 112. The bottom of the rotating shaft 222 passes through the impact block 213 and the cylindrical cover 212, contacting the impact block 213 and the cylindrical cover 212. The outer wall of the rotating shaft 222... A power component is fixedly connected to the inner wall of the drive wheel 214 and a power component is provided on the support plate 221; a circular ring 411 is sleeved on the outer wall of the rotating shaft 222 and the circular ring 411 is fixedly connected to the rotating shaft 222; the power component includes a motor 223 fixedly connected to the top of the support plate 221, and the output shaft of the motor 223 is fixedly connected to the rotating shaft 222 through a coupling; by setting the vibration part 2, the screening component can be periodically vibrated and impacted to break up the blockage of material agglomeration, accelerate the material screening speed, continuously maintain the smooth screening state, and ensure the continuous, stable and efficient operation of the screening operation.

[0021] The cleaning unit 3 includes a cleaning component 31 mounted on the hopper 111 and an extrusion component 32 mounted on the power component 22. The cleaning component 31 is located on the inclined surface of the hopper 111 and includes several hollow cylindrical rods 311 fixedly connected to the inner wall of the hopper 111. Circular limiting plates 312 are slidably connected inside each hollow cylindrical rod 311. Cylindrical rods 313 are fixedly connected to the tops of the circular limiting plates 312. The tops of the cylindrical rods 313 extend outside the hollow cylindrical rods 311 and are slidably connected to the hollow cylindrical rods 311. Protrusions 314 are fixedly connected to the tops of the cylindrical rods 313. Elastic elements are provided inside the hollow cylindrical rods 311. The hollow cylindrical rods 311 are provided with… Four springs are arranged in a circular array. The elastic element includes springs 315 respectively installed in several hollow cylindrical rods 311. The tops of the springs 315 are fixedly connected to several circular limiting plates 312, and the bottoms of the springs 315 are fixedly connected to several hollow cylindrical rods 311. There are four springs 315. The extrusion assembly 32 includes a cross bracket 321 fixedly connected to the outer wall of the rotating shaft 222. Several extrusion protrusions 322 are fixedly connected to the bottom of the cross bracket 321. There are four extrusion protrusions 322 arranged in a circular array. By setting the cleaning part 3, periodic vibration is continuously applied to the feeding area to avoid material adhesion and accumulation on the feeding slope, ensure smooth downward conveying of material, ensure continuous and uninterrupted operation of the feeding process, and improve the smoothness of the entire screening and conveying operation.

[0022] The dispersing section 4 includes a circular ring 411 set on the top of the filter plate 112. Several dispersing rods 412 are fixedly connected to the outer wall of the circular ring 411. There are four dispersing rods 412 arranged in a circumferential array. By setting the dispersing section 4, the agglomerated materials are dispersed, avoiding material agglomeration and clogging of the screening position, improving the uniformity of material dispersion, optimizing the screening transparency, effectively separating agglomerated materials from qualified finished products, ensuring screening purity, and at the same time making the material spread more evenly and reducing the accumulation and clogging of the screen.

[0023] It should be noted that in this application, both the conveyor 115 and the motor 223 can be automatically controlled by using a program set in the control panel and inputting relevant parameters as needed. This control method can be achieved using existing technologies, such as PLC.

[0024] When in use, pour the finished phosphate flame retardant into the hopper 111, start the motor 223, the motor 223 drives the rotating shaft 222 to rotate, the rotating shaft 222 drives the four dispersing rods 412 to move in a circular motion through the circular ring 411, thereby dispersing and spreading the finished phosphate flame retardant. Under the action of the filter plate 112, the finished phosphate flame retardant is screened. During the rotation of the shaft 222, the shaft 222 drives the drive wheel 214 to rotate. The drive wheel 214 pushes the two transmission rods 215 downward through the blades. The two transmission rods 215 drive the cylindrical cover 212 to slide downward on the two slide rods 211. Under the parallel action of the two slide rods 211, the cylindrical cover 212 is ensured to move smoothly. The cylindrical cover 212 drives the impact block 213 to move downward and away from the filter plate 112. At this time, the cylindrical cover 212 compresses the spring 217 and the telescopic protective sleeve 218, causing the spring 217 to deform and generate elastic force. The telescopic protective sleeve 218 protects the spring 217 to prevent the sieved phosphate flame retardant product from falling onto the spring 217 and affecting its elasticity. When the two transmission rods 215 pass through the blades on the drive wheel 214, the compressive force on the spring 217 disappears, releasing the elasticity. The elasticity acts on the cylindrical cover 212, causing the cylindrical cover 212 to reset. At this time, the cylindrical cover 212 pushes the impact block 213 to reset quickly and impacts the filter plate 112, causing the filter plate 112 to vibrate, thereby improving the efficiency of sieving the phosphate flame retardant product. When the rotating shaft 222 rotates, it drives the four pressing protrusions 322 to press the four protrusions 314 respectively through the cross bracket 321, causing the four protrusions 314 to move downward. The four protrusions 314 push the four circular limiting plates 312 to move downward within the hollow cylindrical rod 311 through the four cylindrical rods 313, and respectively press the four springs 315, causing the four springs 315 to deform and generate elastic force. When the four pressing protrusions 322 pass through the four protrusions 314, they press the four springs 315 to deform and generate elastic force. When block 314 is in operation, the compressive force on the four springs 315 disappears, releasing the elastic force. The elastic force acts on the circular limiting plate 312, and the four circular limiting plates 312 quickly reset and impact the four hollow cylindrical rods 311 respectively, causing the four hollow cylindrical rods 311 to vibrate. The vibration force is transmitted through the hollow cylindrical rods 311 to the feeding hopper 111, causing the bottom inclined surface of the hollow cylindrical rods 311 to vibrate, thus preventing the finished phosphate ester flame retardant product after screening from remaining on the inclined surface of the feeding hopper 111. The screened phosphate ester flame retardant finished product falls into the conveyor 115 through the bottom of the feed hopper 111. The conveyor 115 is started, and the internal spiral main shaft and spiral blades are driven to rotate synchronously by the motor. After the material falls into the shell from the feed hopper, it is continuously pushed forward by the axial thrust generated by the rotating blades, and is steadily lifted along the inclined shell. Finally, it is discharged outward from the top discharge port. The whole process is enclosed to avoid material dust leakage, thereby conveying the screened phosphate ester flame retardant finished product.

[0025] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A phosphate ester flame retardant finished product anti-sticking screening and conveying device, comprising a hopper (111) and a filter plate (112) fixedly connected within the hopper (111), characterized in that, Also includes: Feeding section (1), which is installed on the unloading hopper (111); Vibration unit (2), which is mounted on filter plate (112); Cleaning section (3), the cleaning section (3) is provided on the feeding hopper (111); Dispersing section (4), the dispersing section (4) is disposed above the filter plate (112); The vibrating part (2) includes a vibration assembly (21), which is disposed on the filter plate (112); and A power assembly (22) is mounted on a hopper (111); The vibration assembly (21) includes two slide rods (211) fixedly connected to the bottom of the filter plate (112). A cylindrical cover (212) is slidably connected to the outer wall of the two slide rods (211). An impact block (213) is fixedly connected to the top of the cylindrical cover (212). A drive wheel (214) is provided inside the cylindrical cover (212). Two transmission rods (215) are fixedly connected to the inner wall of the cylindrical cover (212). Elastic elements are provided on the two slide rods (211). The top of the impact block (213) is in contact with the bottom of the filter plate (112).

2. The anti-sticking screening and conveying device for finished phosphate ester flame retardant products according to claim 1, characterized in that, The feeding unit (1) includes a support frame (113) fixedly connected to the outer wall of the hopper (111), and a bracket (114) is provided on the right side of the hopper (111), and a conveyor (115) is fixedly connected to the bracket (114). The conveyor (115) is connected to the hopper (111).

3. The anti-sticking screening and conveying device for finished phosphate ester flame retardant products according to claim 2, characterized in that, The cleaning unit (3) includes a cleaning component (31) mounted on the hopper (111); and An extrusion assembly (32) is disposed on a power assembly (22); The cleaning component (31) is located on the inclined surface of the hopper (111).

4. The anti-sticking screening and conveying device for finished phosphate ester flame retardant according to claim 3, characterized in that, The dispersing part (4) includes a circular ring (411) disposed on the top of the filter plate (112), and a plurality of dispersing rods (412) are fixedly connected to the outer wall of the circular ring (411). Among them, there are four dispersing rods (412), which are arranged in a circular array.

5. The anti-sticking screening and conveying device for finished phosphate ester flame retardant according to claim 4, characterized in that, The power assembly (22) includes a support plate (221) fixedly connected to the top of the hopper (111). A rotating shaft (222) passes through the support plate (221). The rotating shaft (222) is rotatably connected to the support plate (221). The bottom of the rotating shaft (222) passes through the filter plate (112) and extends outward. The rotating shaft (222) is in contact with the filter plate (112). The bottom of the rotating shaft (222) passes through an impact block (213) and a cylindrical cover (212). The rotating shaft (222) is in contact with the impact block (213) and the cylindrical cover (212). The outer wall of the rotating shaft (222) is fixedly connected to the inner wall of the drive wheel (214). A power component is provided on the support plate (221). Among them, the circular ring (411) is sleeved on the outer wall of the rotating shaft (222), and the circular ring (411) is fixedly connected to the rotating shaft (222).

6. The anti-sticking screening and conveying device for finished phosphate ester flame retardant according to claim 5, characterized in that, The cleaning component (31) includes a plurality of hollow cylindrical rods (311) fixedly connected to the inner wall of the hopper (111). A circular limiting plate (312) is slidably connected inside each of the plurality of hollow cylindrical rods (311). A cylindrical rod (313) is fixedly connected to the top of each of the plurality of circular limiting plates (312). The tops of the plurality of cylindrical rods (313) extend to the outside of the plurality of hollow cylindrical rods (311). The plurality of cylindrical rods (313) are slidably connected to the plurality of hollow cylindrical rods (311). A protrusion (314) is fixedly connected to the top of each of the plurality of cylindrical rods (313). An elastic element is provided inside the plurality of hollow cylindrical rods (311). Among them, there are four hollow cylindrical rods (311) arranged in a circular array.

7. The anti-sticking screening and conveying device for finished phosphate ester flame retardant according to claim 6, characterized in that, The extrusion assembly (32) includes a cross bracket (321) fixedly connected to the outer wall of the rotating shaft (222), and a plurality of extrusion protrusions (322) are fixedly connected to the bottom of the cross bracket (321). Among them, there are four extrusion bumps (322) arranged in a circular array.

8. The anti-sticking screening and conveying device for finished phosphate ester flame retardant according to claim 7, characterized in that, The support includes a support ring (216) sleeved on the outer wall of the rotating shaft (222), the support ring (216) being fixedly connected to two sliding rods (211), a spring (217) being sleeved on the outer wall of the rotating shaft (222), the top of the spring (217) being fixedly connected to the cylindrical cover (212), the bottom of the spring (217) being fixedly connected to the support ring (216), a telescopic protective sleeve (218) being sleeved on the spring (217), the top of the telescopic protective sleeve (218) being fixedly connected to the cylindrical cover (212), and the bottom of the telescopic protective sleeve (218) being fixedly connected to the support ring (216); Among them, spring 1 (217) and telescopic protective sleeve (218) are both located between cylindrical cover (212) and support ring (216).

9. The anti-sticking screening and conveying device for finished phosphate ester flame retardant according to claim 8, characterized in that, The power component includes a motor (223) fixedly connected to the top of the support plate (221), and the output shaft of the motor (223) is fixedly connected to the rotating shaft (222) via a coupling.

10. A phosphate ester flame retardant finished product anti-sticking screening and conveying device according to claim 9, characterized in that, The elastic element includes springs 2 (315) respectively disposed in a plurality of hollow cylindrical rods (311), the tops of the plurality of springs 2 (315) are respectively fixedly connected to a plurality of circular limiting plates (312), and the bottoms of the plurality of springs 2 (315) are respectively fixedly connected to a plurality of hollow cylindrical rods (311). Among them, four springs (315) are provided.

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