Ventilation and dust removal equipment for plastic color master batch production

Abstract

The present application relates to the technical field of dust removal for color master batch production, in particular to a ventilation and dust removal equipment for plastic color master batch production, which comprises a closed material bin for continuously moving the material horizontally, a filtering mechanism arranged inside the closed material bin for blocking and isolating the laid material, and a wind power mechanism for alternately blowing the material with two kinds of wind power, the present application forms a continuous one-way down-in and up-out airflow in the closed material bin by using the breeze assembly, can blow and separate the dust floating on the surface of the moving material in real time, and realizes preliminary and continuous dust removal; on this basis, the filtering plate is controlled to move down to the lower channel intermittently by the driving assembly, the material is separated into several independent areas, and the strong wind is intermittently introduced into the left part of the lower channel by cooperating with the switching assembly, so that the dust mixed with the material is blown away by the strong wind and adheres to the left side of the filtering plate located in the lower channel, and efficient dust removal operation with low material loss is realized.

Description

Technical Field

[0001] This invention relates to the field of environmental protection and dust removal technology in masterbatch production, specifically a ventilation and dust removal device for plastic masterbatch production. Background Technology

[0002] In the production of color masterbatch, plastic materials are usually first crushed, then melted and extruded into continuous strips through an extruder. After cooling, pelletizing and other processes, the final color masterbatch product is formed. Therefore, the purity of the material before crushing directly determines the quality of the final product.

[0003] However, materials are prone to getting mixed with a lot of dust during collection, transportation and storage. If they are not effectively removed before crushing, these impurities will directly enter the subsequent high-temperature melting process, thereby reducing the color uniformity and physical properties of the masterbatch. Therefore, dust removal pretreatment before the material enters the crusher is a key step to ensure the production quality of the masterbatch.

[0004] Currently, ventilation dust removal equipment is commonly used for dust removal of plastic materials. This type of equipment usually uses a fan to generate airflow, which makes the airflow come into contact with the horizontally or inclined conveyed materials in a counter-current or cross-flow manner. The wind force is used to separate the lighter dust from the raw materials and blow it away, thereby achieving the purpose of dust removal.

[0005] However, when the amount of dust mixed in the material is large, the dust and material particles are severely mixed together, and it is difficult to achieve efficient material-dust separation by simply relying on the counter-current dust blowing with constant wind force. The more prominent contradiction lies in the control of wind pressure: if the wind force is increased in order to improve the dust removal effect, it is easy to blow away the lighter color masterbatch raw material itself, causing unnecessary loss of raw materials and directly affecting the output and cost.

[0006] If the wind speed is reduced to avoid raw material loss, the dust removal effect will be greatly reduced, and the requirements for high-purity production cannot be met. This contradiction is particularly acute when dealing with some color masterbatch materials that are inherently low in density and light in weight. Traditional equipment often finds itself in a dilemma, making it difficult to achieve low loss of raw materials while ensuring a high dust removal rate, which restricts further improvement in production efficiency and product quality. Summary of the Invention

[0007] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a ventilation and dust removal device for the production of plastic masterbatch, including a closed silo for continuously moving the material horizontally, a filter mechanism for blocking and isolating the flat material inside the closed silo, and a wind mechanism for providing two wind forces to alternately blow the material.

[0008] The enclosed silo is fixedly equipped with a partition that divides its interior into upper and lower channels.

[0009] The filtration mechanism includes several filter plates arranged at equal intervals on the left and right and slidably inserted into the closed hopper. The filtration position of the filter plates is moved alternately in the upper and lower channels by a drive component set on the closed hopper. The filter plates that move to the lower channel block and isolate the material into several independent areas.

[0010] The wind mechanism includes a micro-wind component that creates a continuous unidirectional wind with downward inflow and upward outflow in the two channels, and a switching component that intermittently introduces strong wind into the left side of the lower channel, thereby forcefully blowing away dust and attaching it to the left side of the filter plate that moves into the lower channel. Then, the switching component blows the strong wind to the right side of the filter plate that moves into the upper channel through the set air distribution pipe, removing and recycling the dust attached to the filter plate.

[0011] By utilizing unidirectional wind for continuous separation and strong wind for precise dust removal and recovery, efficient dust removal operations with low material loss are achieved.

[0012] As a preferred embodiment of the present invention, the filter plate includes an outer frame that is slidably connected to a closed hopper, and a filter element that is detachably mounted on the outer frame. A through groove is provided on the outer frame on the upper side of the filter element.

[0013] As a preferred embodiment of the present invention, the drive assembly includes a connecting plate that is fixedly installed on the upper side of the outer frame, and a hydraulic cylinder is fixedly installed on the upper side of the enclosed hopper. The telescopic section of the hydraulic cylinder is fixedly connected to the connecting plate.

[0014] As a preferred embodiment of the present invention, the left side of the partition is fitted to the inner wall of the enclosed silo, and a gap is left between the right side of the partition and the inner wall of the enclosed silo, so that the right sides of the upper and lower channels are connected.

[0015] As a preferred embodiment of the present invention, the right side of the enclosed silo is a feeding port for feeding materials into the right side of the lower channel, and the lower part of the enclosed silo is a discharge port connected to the left side of the lower channel.

[0016] As a preferred embodiment of the present invention, the micro-wind component includes an air inlet pipe fixedly installed on the front left side of the enclosed silo and connected to the lower channel, and an air outlet pipe fixedly installed on the left side of the enclosed silo and connected to the upper channel.

[0017] As a preferred embodiment of the present invention, the air distribution pipeline includes wedge-shaped chambers that are fixedly installed on the closed silo and correspond one-to-one with the filter plates, and a conduit that is fixedly installed at the rear of the closed silo and communicates with each wedge-shaped chamber.

[0018] As a preferred embodiment of the present invention, the switching component includes an air distribution plate fixedly installed on the left side of the enclosed silo, the air distribution plate being connected to the lower channel and the duct at the front and rear respectively, and an air supply plate being slidably and sealingly arranged on the left side of the air distribution plate.

[0019] As a preferred embodiment of the present invention, a switch plate is provided on the closed silo with front and rear sealing and sliding. The left side of the switch plate is flush with the right side of the rightmost filter plate. An electric cylinder for driving the switch plate to slide is fixedly installed in the closed silo.

[0020] As a preferred embodiment of the present invention, the partition plate is provided with a clearance groove for the filter plate to pass through, and each clearance groove is provided with two symmetrically arranged closing blocks to slide and close the clearance groove. The closing blocks and the partition plate are provided with a helical spring.

[0021] The beneficial effects of this invention are as follows: First, this invention uses a micro-wind component to form a continuous unidirectional downward-in, upward-out airflow within a closed silo, which can blow away and separate dust floating on the surface of moving materials in real time, achieving preliminary and continuous dust removal. On this basis, the drive component controls the filter plate to intermittently move down to the lower channel, dividing the material into several independent areas. In conjunction with the switching component, strong air is intermittently introduced into the left side of the lower channel, causing the dust to be forcefully blown away from the material and attached to the left side of the filter plate located in the lower channel. By using the physical barrier of the filter plate on the material, it effectively prevents the strong wind from blowing away the lightweight raw materials, thereby significantly reducing raw material loss while ensuring high dust removal efficiency, and achieving efficient dust removal operation with low material loss.

[0022] Second, this invention uses a switching component connected to the air distribution pipeline. After the strong wind completes the blowing and removal of dust from the material, the switching component can guide the strong wind to the duct and then precisely guide it through the wedge-shaped chamber to the right side of the filter plate that has moved to the upper channel, forming a reverse blowing action on the filter plate. This allows the dust attached to its left side to be effectively removed and collected under the reverse blowing action. This achieves online automatic dust removal of the filter plate, significantly extends the effective service life of the filter element, ensures the continuous and stable air permeability of the filter plate, and reduces the frequency of manual cleaning due to filter hole blockage, thereby improving the continuous operation efficiency and overall production efficiency of the equipment. Attached Figure Description

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Figure 1 This is a schematic diagram of the first overall structure of the present invention.

[0025] Figure 2 This is a schematic diagram of the second overall structure of the present invention.

[0026] Figure 3 This is a partial sectional view of the enclosed silo, partition, switch plate, and outer frame in this invention.

[0027] Figure 4This is a partial cross-sectional view of the enclosed silo, air distribution plate, air supply plate and air inlet pipe in this invention.

[0028] Figure 5 This is a partial sectional view of the outer frame, filter element, air inlet pipe and wedge-shaped chamber in this invention.

[0029] Figure 6 This is a partial cross-sectional view of the conduit, wedge chamber, filter element and sealing block in this invention.

[0030] In the diagram: 1. Enclosed silo; 2. Filtering mechanism; 3. Wind power mechanism; 11. Partition plate; 12. Switch plate; 13. Electric cylinder; 21. Filter plate; 22. Drive assembly; 31. Micro-wind assembly; 32. Switching assembly; 33. Air distribution pipeline; 111. Enclosure block; 211. Outer frame; 212. Filter element; 221. Connecting plate; 222. Hydraulic cylinder one; 311. Air inlet pipe; 312. Air outlet pipe; 321. Air distribution plate; 322. Air supply plate; 323. Hydraulic cylinder two; 331. Wedge-shaped chamber; 332. Conduit. Detailed Implementation

[0031] The embodiments of the present invention are described in detail below. The embodiments described below are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention. Where specific techniques or conditions are not specified in the embodiments, they shall be performed in accordance with the techniques or conditions described in the literature in the art or in accordance with the product manual.

[0032] See Figure 1 and Figure 3 A ventilation and dust removal device for the production of plastic masterbatch includes a closed silo 1 for continuous horizontal movement of materials. Inside the closed silo 1, a partition 11 is fixedly installed to divide the interior into upper and lower channels. The left side of the partition 11 is attached to the inner wall of the closed silo 1, and a gap is left between the right side of the partition 11 and the inner wall of the closed silo 1, so that the right parts of the upper and lower channels are connected.

[0033] See Figure 1 , Figure 2 and Figure 3 The right side of the enclosed silo 1 is a feeding port for feeding materials into the right side of the lower channel. The lower part of the enclosed silo 1 is a discharge port connected to the left side of the lower channel. The enclosed silo 1 is equipped with a filter mechanism 2 for blocking and isolating the flat material, and a wind mechanism 3 for providing two types of wind to alternately blow the material.

[0034] During dust removal, the material discharge port is connected to the feed port of the plastic material crushing device, so that the material in the feed port slides down into the closed hopper 1 under the action of gravity, and the material is spread flat in the closed hopper 1 and moves continuously to the left along the lower channel of the closed hopper 1. During this process, the wind mechanism 3 blows continuously in one direction and separates the dust floating on the surface of the material.

[0035] Dust moves to the left along the lower channel with the airflow. Then, the airflow carries the dust through the gap between the partition 11 and the closed hopper 1 to the right side of the upper channel. After that, the airflow continues to carry the dust to the left along the upper channel to the outside of the closed hopper 1, thus achieving dust collection.

[0036] During the dust removal process, the filter mechanism 2 intermittently blocks and isolates the material into several areas, and when blocking the material, such as Figure 5 As shown, the strong wind blown by the wind mechanism 3 powerfully blows away the dust and causes it to adhere to the filter mechanism 2; when the material is not blocked, such as Figure 3 As shown, the wind-powered mechanism 3 can self-clean the filter mechanism 2 through strong wind; thus, by means of continuous separation by unidirectional wind and precise dust removal and recycling by strong wind, a high-efficiency dust removal operation with low material loss can be carried out.

[0037] Subsequently, the material, after being thoroughly cleaned of dust, moves to the left side and, under the influence of gravity, slides through the discharge port into the plastic material crushing device for crushing, thus achieving continuous production of high-quality color masterbatch.

[0038] It should be noted that in this embodiment, the enclosed silo 1 can be arranged in an inclined shape with the right side higher than the left side, so that the material slides continuously to the left along the lower channel under the action of gravity. Alternatively, a vibration generator can be installed at the lower part of the enclosed silo 1 to force the material to slide continuously to the left along the lower channel by continuously oscillating the material. Both of these methods are commonly used in the prior art and will not be described in detail here, nor are they shown in the figure.

[0039] See Figure 1 , Figure 2 , Figure 3 and Figure 4 The wind power mechanism 3 includes a micro-wind component 31 that creates a continuous unidirectional airflow with bottom inlet and top outlet in the two channels. The micro-wind component 31 includes an air inlet pipe 311 fixedly installed on the front left side of the enclosed silo 1 and connected to the lower channel, and an air outlet pipe 312 fixedly installed on the left side of the enclosed silo 1 and connected to the upper channel. The air outlet pipe 312 is connected to a bag filter in the prior art.

[0040] The air inlet duct 311 is connected to the No. 1 fan in the prior art. The No. 1 fan introduces a light breeze with a wind speed of 0.5 to 1.5 m / s into the left side of the lower channel of the closed silo 1 through the air inlet duct 311. This light breeze blows up the extremely light dust particles of 5 to 20 microns floating on the material and suspended in the closed silo 1. At the same time, it can ensure that the material moves steadily to the left. Thus, the airflow carries these extremely light dust particles through the upper channel to the air outlet duct 312, thereby achieving the collection of extremely light dust particles.

[0041] See Figure 1 , Figure 3 , Figure 5 and Figure 6 The filter mechanism 2 includes several filter plates 21 arranged at equal intervals on the left and right and slidably inserted into the closed silo 1. The filter position of the filter plates 21 is moved alternately in the upper and lower channels by the drive assembly 22 set on the closed silo 1. The partition 11 is provided with clearance grooves for the filter plates 21 to pass through.

[0042] After a period of time, the drive component 22 drives all the filter plates 21 to move down and pass through the corresponding clearance groove of the partition 11 to the interior of the lower channel. This allows the filter plates 21 that have moved into the lower channel to block and isolate the material into several independent areas, thereby blocking the rightward movement of the material in each area.

[0043] See Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 The wind power mechanism 3 also includes a switching component 32 that intermittently supplies strong air to the left side of the lower channel. The switching component 32 includes an air distribution plate 321 fixedly installed on the left side of the enclosed hopper 1. The air distribution plate 321 has two air ports. The air port at the front is connected to the lower channel. An air supply plate 322 is slidably and sealed on the left side of the air distribution plate 321. The air supply plate 322 has a through hole that runs through it from left to right. The left side of the through hole is connected to the No. 2 fan in the prior art. A hydraulic cylinder 323 is fixedly installed on the enclosed hopper 1. The telescopic section of the hydraulic cylinder 323 is fixedly connected to the air supply plate 322.

[0044] When the filter plate 21 blocks and isolates the material, the extension section of the hydraulic cylinder 323 retracts, so that the through hole on the air supply plate 322 connects with the air port at the front of the air distribution plate 321. This allows the second blower to deliver a strong wind with a speed of 2.5 to 5.0 m / s through the through hole and the front air port into the left side of the lower channel of the closed silo 1. The strong wind blows the material up and slightly agitates it, exposing and separating the dust inside the material. This dust is blown onto the filter plate 21 by the strong wind. Fine dust passes through the filter plate 21 and moves directly along the upper channel to the air outlet 312 where it is collected. Aggregated dust adheres to the left side of the filter plate 21. Raw materials with a particle size generally between 100 and 500 μm cannot pass through the filter plate 21, and due to their own weight, they are difficult to adhere to the filter plate 21, thus preventing the loss of raw materials and achieving powerful and efficient separation of material and dust with low raw material loss.

[0045] It is worth noting that the material movement speed and the frequency of the intermittent downward movement of the filter plate 21 were obtained through experiments conducted by those skilled in the art. This ensures that the material undergoes two or more strong wind dust removal processes during its overall movement within the enclosed silo 1, thereby significantly improving the dust removal effect while ensuring efficiency. In addition, both the No. 1 and No. 2 fans can provide ion wind, thereby avoiding the risk of sparks caused by static electricity inside the enclosed silo 1. Furthermore, both the No. 1 and No. 2 fans adopt an explosion-proof design, further avoiding the risk of dust explosion.

[0046] To facilitate maintenance of the filter plate 21, the present invention designs the following structure: (See attached diagram) Figure 4 , Figure 5 and Figure 6 The filter plate 21 includes an outer frame 211 that is slidably connected to the closed hopper 1, and a filter element 212 that is detachably installed on the outer frame 211. A through groove is provided on the outer frame 211 on the upper side of the filter element 212. When the outer frame 211 moves the filter element 212 to the lower channel, the through groove on the outer frame 211 is located in the upper channel, thereby preventing the outer frame 211 from blocking the air passage in the upper channel.

[0047] It is worth noting that the filter element 212 in this embodiment is a model with a densely layered surface commonly used in the prior art. This allows agglomerated dust to be trapped and adhered to the filter element 212, while materials with a particle size much larger than dust cannot be easily trapped on the filter element 212. When the outer frame 211 moves the filter element 212 upward, as the filter element 212 passes through the clearance groove of the partition 11 from bottom to top, the clearance groove can also scrape off the trapped material to prevent material loss. The dust trapped and adhered to the filter element 212 can be deformed and adhered to the filter element 212 to prevent it from being scraped off by the clearance groove. A small amount of fine dust that is scraped off is continuously blown away and collected by a gentle breeze during the falling process, further ensuring the thoroughness of material and dust separation.

[0048] It should be noted that although the airflow velocity decreases sequentially as the strong wind passes through each filter element 212 from left to right due to the obstruction of the airflow by the filter element 212, the outer frame 211 moves down into the lower channel and seals against the side wall of the lower channel, so that most of the airflow can only flow to the right through the filter element 212. This results in a very small decrease in airflow velocity. The impact of the reduced airflow velocity on dust removal can be completely eliminated by performing strong wind dust removal on the same material twice or more.

[0049] To facilitate the synchronized vertical movement of all filter plates 21, the present invention designs the following structure: (See attached diagram) Figure 1 , Figure 2 and Figure 6The drive assembly 22 includes a connecting plate 221 that is fixedly installed on the upper side of the outer frame 211. A hydraulic cylinder 222 is fixedly installed on the upper side of the enclosed hopper 1. The telescopic section of the hydraulic cylinder 222 is fixedly connected to the connecting plate 221. The extension and retraction of the telescopic section of the hydraulic cylinder 222 can drive all the outer frames 211 and their filter elements 212 to move up and down synchronously through the connecting plate 221.

[0050] To prevent strong winds from blowing away the material between the right side of the rightmost filter plate 21 and the left side of the feed inlet, causing material loss, the present invention designs the following structure: (See attached diagram) Figure 1 , Figure 2 , Figure 3 and Figure 5 A switch plate 12 is provided on the closed silo 1 with front and rear sealing and sliding. The left side of the switch plate 12 is flush with the right side of the rightmost filter plate 21. An electric cylinder 13 for driving the switch plate 12 to slide is fixedly installed on the closed silo 1.

[0051] During strong wind dust removal, the telescopic section of the retractable electric cylinder 13 drives the switch plate 12 to slide into the closed hopper 1, so that the right side of the switch plate 12 is attached to the closed hopper 1 and the left side of the switch plate 12 is attached to the right side of the rightmost filter plate 21. Thus, the switch plate 12 blocks the material between the right side of the rightmost filter plate 21 and the left side of the feed port, preventing material loss.

[0052] During the dust removal process, the telescopic section of the extended electric cylinder 13 moves the switch plate 12 forward to no longer obstruct the material, allowing the dust carried by the airflow to pass smoothly through the gap between the partition 11 and the closed hopper 1 and move into the air outlet duct 312.

[0053] To prevent airflow from directly moving into the upper channel through the clearance groove during dust removal, resulting in insufficient material and airflow in the right side of the lower channel and poor dust removal efficiency, this invention designs the following structure: (See attached diagram) Figure 5 and Figure 6 Each clearance slot on the partition 11 is provided with two symmetrically arranged closing blocks 111 for sliding to close the clearance slot. The closing blocks 111 and the partition 11 are provided with a helical spring. The two closing blocks 111 in the same clearance slot have a chamfer on the side that is close to each other. The lower part of the outer frame 211 is fixedly installed with a triangular rubber strip with the tip pointing downward.

[0054] When the outer frame 211 moves downward, the outer frame 211 causes the inclined surface of the triangular rubber strip to contact the chamfer of the sealing block 111, thereby pushing the two sealing blocks 111 in the same clearance groove away from each other, so that the outer frame 211 can pass smoothly through the clearance groove. When the outer frame 211 moves upward and resets, the outer frame 211 moves completely to the upper part of the partition 11, so that the helical spring pushes the sealing block 111 to reset, so that the two sealing blocks 111 in the same clearance groove abut together to seal the clearance groove and prevent airflow from passing directly through the clearance groove.

[0055] Meanwhile, the triangular rubber strips on the outer frame 211 can push the material layer away from both sides when blocking and isolating the material. Even if a small amount of material is placed under the triangular rubber strips, the triangular rubber strips can still conform to the closed hopper 1 through their own deformation, and at the same time prevent the material from being crushed, resulting in material loss.

[0056] To ensure the continuous and stable air permeability of filter element 212 and reduce the frequency of manual cleaning due to clogging, this invention designs the following structure: (See attached diagram) Figure 1 , Figure 4 , Figure 5 and Figure 6 The switching component 32 blows strong air to the right side of the filter plate 21 in the upper channel through the set air distribution pipe 33. The air distribution pipe 33 includes wedge-shaped chambers 331 that are fixedly installed on the closed silo 1 and correspond one-to-one with the filter plate 21. The rear of the closed silo 1 is fixedly installed with a conduit 332 that is connected to each wedge-shaped chamber 331. The air port located at the rear of the air distribution plate 321 is connected to the conduit 332.

[0057] After the strong wind blows the material for a period of time, the extension section of hydraulic cylinder 222 extends, causing the outer frame 211 and its upper filter element 212 to move upward until the filter element 212 is completely aligned with the lower outlet of the corresponding wedge-shaped chamber 331. Then, the extension section of hydraulic cylinder 323 extends, causing the air supply plate 322 to move backward to connect with the air inlet at the rear. This allows the second blower to blow strong wind into the duct 332, and then distribute it evenly to each wedge-shaped chamber 331. The wedge-shaped chamber 331 precisely guides the wind to the right side of the filter element 212, which has moved to the upper channel, forming a reverse blowing action on the filter element 212. This causes the dust attached to its left side to be effectively removed and collected under the reverse blowing action, realizing online automatic dust removal of the filter element 212. This significantly extends the effective service life of the filter element 212, thereby improving the continuous operation efficiency and overall production efficiency of the equipment.

[0058] It should be noted that, such as Figure 3 and Figure 5As shown, the right side of the outer frame 211 is sealed and fitted with the wedge-shaped chamber 331 on its right side, the left side of the leftmost outer frame 211 is sealed and fitted with the closed hopper 1, and the left side of the remaining outer frame 211s, except for the leftmost one, is sealed and fitted with the wedge-shaped chamber 331 on its left side, so that the dust inside the closed hopper 1 cannot escape through the through groove of the outer frame 211 during the upward movement.

[0059] And such as Figure 6 As shown, when cleaning filter element 212, the left side of all filter elements 212 except the leftmost filter element 212 corresponds to the wedge-shaped surface of the adjacent left wedge chamber 331. This prevents the wedge chamber 331 from blowing the dust back from the left side of filter element 212 onto other filter elements 212, thus ensuring the effectiveness of back-blowing cleaning of filter element 212.

[0060] Although the invention employs a liftable filter plate 21, a switching component 32, and an air distribution pipeline 33, which slightly increases the initial investment cost of the equipment, it achieves efficient, thorough, and low-loss dust removal for plastic masterbatch raw materials through the alternating action of continuous micro-wind separation of floating dust and intermittent strong wind penetration and dust removal, combined with the dynamic material blocking of the filter plate 21 and online reverse blowing self-cleaning. In the long run, the equipment significantly improves the purity and quality stability of masterbatch products, reduces scrap rate and raw material waste, and the economic value generated by the production benefits and quality improvement it brings far exceeds the initial incremental cost investment.

[0061] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0062] Furthermore, the terms "first," "second," "number one," and "number two" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "number one," or "number two" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0063] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0064] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A ventilation and dust removal device for the production of plastic masterbatch, comprising a closed silo for continuously moving materials horizontally, characterized in that, The enclosed silo is equipped with a filtration mechanism to block and isolate the flat material, as well as a wind mechanism that provides two wind forces to alternately blow the material. The enclosed silo is fixedly equipped with a partition that divides its interior into upper and lower channels; The filtration mechanism includes several filter plates arranged at equal intervals on the left and right and slidably inserted into the closed hopper at the top and bottom. The filtration position of the filter plates is moved alternately in the upper and lower channels by a drive component set on the closed hopper. The filter plates that move to the lower channel block and isolate the material into several independent areas. The left side of the partition is fitted to the inner wall of the enclosed silo, and a gap is left between the right side of the partition and the inner wall of the enclosed silo, so that the right parts of the upper and lower channels are connected. The partition plate has a clearance groove for the filter plate to pass through at the position corresponding to the filter plate. Each clearance groove has two symmetrically arranged closing blocks that slide to close the clearance groove. The closing blocks and the partition plate are provided with a helical spring. The wind mechanism includes a micro-wind component that creates a continuous unidirectional wind with downward inflow and upward outflow in the two channels, and a switching component that intermittently introduces strong wind into the left side of the lower channel, thereby forcefully blowing away dust and attaching it to the left side of the filter plate that moves to the lower channel. Then, the switching component blows the strong wind to the right side of the filter plate that moves to the upper channel through the set air distribution pipe, removing and recycling the dust attached to the filter plate. By utilizing unidirectional wind for continuous separation and strong wind for precise dust removal and recovery, efficient dust removal operations with low material loss are achieved.

2. The ventilation and dust removal equipment for producing plastic masterbatch according to claim 1, characterized in that, The filter plate includes an outer frame that is slidably connected to the closed hopper, and a filter element that is detachably installed on the outer frame. A through groove is provided on the outer frame on the upper side of the filter element.

3. The ventilation and dust removal equipment for producing plastic masterbatch according to claim 2, characterized in that, The drive assembly includes a connecting plate that is fixedly installed on the upper side of the outer frame, and a hydraulic cylinder is fixedly installed on the upper side of the enclosed hopper. The telescopic section of the hydraulic cylinder is fixedly connected to the connecting plate.

4. The ventilation and dust removal equipment for producing plastic masterbatch according to claim 1, characterized in that, The right side of the enclosed silo is a feeding port for feeding materials into the right side of the lower channel, and the lower part of the enclosed silo is a discharge port connected to the left side of the lower channel.

5. The ventilation and dust removal equipment for producing plastic masterbatch according to claim 1, characterized in that, The micro-wind assembly includes an air inlet pipe fixedly installed on the front left side of the enclosed silo and connected to the lower channel, and an air outlet pipe fixedly installed on the left side of the enclosed silo and connected to the upper channel.

6. The ventilation and dust removal equipment for producing plastic masterbatch according to claim 1, characterized in that, The air distribution pipeline includes wedge-shaped chambers that are fixedly installed on the closed silo and correspond one-to-one with the filter plates. A conduit that is connected to each wedge-shaped chamber is fixedly installed at the rear of the closed silo.

7. The ventilation and dust removal equipment for producing plastic masterbatch according to claim 6, characterized in that, The switching component includes an air distribution plate fixedly installed on the left side of the enclosed silo. The air distribution plate is connected to the lower channel and the duct at the front and rear, respectively. An air supply plate is slidably and sealed on the front and rear of the left side of the air distribution plate.

8. The ventilation and dust removal equipment for producing plastic masterbatch according to claim 1, characterized in that, A switch plate is slidably mounted on the sealed hopper, with its left side flush with the right side of the rightmost filter plate. An electric cylinder for driving the switch plate to slide is fixedly installed in the sealed hopper.

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