Ventilation and dust removal equipment for plastic color master batch production

Abstract

The invention relates to the technical field of color master batch production and dust removal, in particular to ventilation and dust removal equipment for plastic color master batch production, which comprises a closed stock bin used for enabling materials to horizontally and continuously move, and a filtering mechanism used for blocking and isolating the tiled materials is arranged in the closed stock bin. According to the invention, a gentle breeze assembly is adopted to form continuous one-way lower-inlet and upper-outlet airflow in the closed stock bin, so that dust floating on the surface layer of the moving material can be blown and separated in real time, and preliminary and continuous dust removal is realized; on the basis, the filter plate is controlled by the driving assembly to intermittently move downwards to the lower channel, the material is divided into a plurality of independent areas, and strong wind is intermittently introduced into the left part of the lower channel in cooperation with the switching assembly, so that entrained dust is forcibly blown away from the material and is attached to the left side surface of the filter plate positioned on the lower channel; and high-efficiency dust removal operation with low loss of materials is realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of environmental protection dust removal for color master batch production, in particular to a ventilation dust removal equipment for plastic color master batch production. BACKGROUND

[0002] In the production of color master batch, the plastic material is usually first crushed, then melted and extruded into a continuous strip by an extruder, and finally formed into a color master batch product after cooling and granulation. Therefore, the purity of the material before crushing directly determines the quality of the final product.

[0003] However, the material is easily mixed with a large amount of dust during collection, transportation and storage. If the dust is not effectively removed before crushing, it will directly enter the subsequent high-temperature melting process, thereby reducing the color uniformity and physical properties of the color master batch. Therefore, dust removal pretreatment before the material enters the crusher is a key link to ensure the production quality of the color master batch.

[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 and the horizontally or obliquely conveyed material form counter-flow or cross-flow contact. The dust with a lower specific gravity is separated from the raw material and blown away by the wind force, 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 seriously entangled and mixed with each other. Simply relying on counter-flow dust blowing with constant wind force cannot achieve efficient separation of material and dust. The more prominent problem is the control of wind pressure: if the wind force is increased to improve the dust removal effect, the lighter color master raw material itself may also be blown away, causing unnecessary loss of raw material and directly affecting the yield and cost.

[0006] If the wind force is reduced to avoid loss of raw material, the dust removal effect will be greatly reduced, which cannot meet the high-purity production requirements. This contradiction is particularly acute when dealing with some color master materials that are inherently low in density and light in weight. Traditional equipment often faces a dilemma, making it difficult to achieve low-loss processing of raw materials while ensuring high dust removal rate, thereby restricting the further improvement of production efficiency and product quality. SUMMARY

[0007] To solve the above technical problems, the technical scheme adopted by the present application is: a ventilation dust removal equipment for plastic color master batch production, which comprises a closed material bin for continuously moving the material horizontally, a filtering mechanism inside the closed material bin for blocking and isolating the flat material, and a wind force mechanism for alternately blowing the material with two kinds of wind force.

[0008] The closed material bin is internally fixedly installed with a partition plate that separates the inside into two channels.

[0009] The filtering mechanism comprises a plurality of filtering plates arranged at equal intervals and sealingly sliding in the closed material bin, the filtering position of the filtering plate is alternately moved in the upper and lower two channels by the driving assembly arranged on the closed material bin, and the filtering plate moved into the lower channel blocks and isolates the material into a plurality of independent areas.

[0010] The wind mechanism comprises a breeze assembly for forming a lower-in and upper-out and continuous one-way wind in the two channels, and a switching assembly for intermittently introducing strong wind into the left part of the lower channel, so that the dust is strongly blown away and attached to the left side of the filtering plate moved into the lower channel, and then the switching assembly blows the strong wind to the right side of the filtering plate moved into the upper channel through the arranged air distribution pipeline, so as to clean and recover the dust attached to the filtering plate.

[0011] By means of continuous separation by one-way wind and accurate dust cleaning and recovery by strong wind, the high-efficiency dust removal operation with low material loss is carried out.

[0012] As a preferred technical solution of the present application, the filtering plate comprises an outer plate frame in sliding connection with the closed material bin, and a filter core detachably installed on the outer plate frame, and a through slot is formed on the upper side of the outer plate frame.

[0013] As a preferred technical solution of the present application, the driving assembly comprises a connecting plate fixedly installed on the upper side of the outer plate frame, a hydraulic cylinder one fixedly installed on the upper side of the closed material bin, and the extension section of the hydraulic cylinder one is fixedly connected with the connecting plate.

[0014] As a preferred technical solution of the present application, the left side of the partition plate is attached to the inner wall of the closed material bin, and a gap is left between the right side of the partition plate and the inner wall of the closed material bin, so that the right parts of the upper and lower two channels are communicated.

[0015] As a preferred technical solution of the present application, the right side of the closed material bin is a feeding port for feeding the material to the right side of the lower channel, and the lower part of the closed material bin is a discharging port communicated with the left side of the lower channel.

[0016] As a preferred technical solution of the present application, the breeze assembly comprises an air inlet pipe fixedly installed on the front left part of the closed material bin and communicated with the lower channel, and an air outlet pipe fixedly installed on the left side of the closed material bin and communicated with the upper channel.

[0017] As a preferred technical solution of the present application, the air distribution pipeline comprises a wedge-shaped bin fixedly installed on the closed material bin and corresponding to the filtering plate, and a guide pipe fixedly installed on the rear part of the closed material bin and communicated with each wedge-shaped bin.

[0018] As a preferred technical solution of the present application, the switching assembly comprises a gas distribution plate fixedly installed on the left side of the closed material bin, and the gas distribution plate is respectively communicated with the lower channel and the guide pipe in front and back, and a gas supply plate is sealingly and slidingly arranged on the left side of the gas distribution plate in front and back.

[0019] As a preferred technical scheme of the present application, the front and rear sealing sliding of the closed material bin is provided with a switch plate, the left side surface of the switch plate is flush with the right side surface of the rightmost filter plate, and the closed material bin is fixedly provided with an electric cylinder for driving the sliding of the switch plate.

[0020] As a preferred technical scheme of the present application, the partition plate is provided with a gap slot for the filter plate to pass through, and two left and right symmetrical sealing blocks are arranged in each gap slot to slide and close the gap slot, and the sealing block and the partition plate are provided with a spiral spring.

[0021] The present application has the following advantages: 1. The present application uses a breeze assembly to form a continuous one-way down-up airflow in the closed material bin, which can blow and separate the dust floating on the surface of the moving material in real time, realizing preliminary and continuous dust removal. On this basis, the driving assembly controls the intermittent downward movement of the filter plate to the lower channel, separates the material into several independent areas, and cooperates with the switching assembly to intermittently introduce strong wind into the left part of the lower channel, so that the dust is blown away from the material and attached to the left side surface of the filter plate located in the lower channel. By using the physical barrier of the filter plate, the strong wind is effectively prevented from blowing away the light raw materials, thereby significantly reducing the loss of raw materials while ensuring high dust removal efficiency, and realizing high-efficiency dust removal operation with low loss of materials.

[0022] 2. The switching assembly is connected with the air distribution pipeline, and after the strong wind completes the blowing and attachment of dust in the material, the switching assembly can guide the strong wind to the conduit, and then accurately guide it to the right side surface of the filter plate that has moved to the upper channel through the wedge-shaped bin, forming a reverse blowing of the filter plate, so that the dust attached to the left side surface of the filter plate is effectively detached and collected under the action of the reverse blowing. This realizes online automatic dust removal of the filter plate, significantly prolongs the effective use time of the filter core, ensures the continuous and stable air permeability of the filter plate, reduces the frequency of manual cleaning due to filter hole blockage, and thus improves the continuous operation efficiency and overall production efficiency of the equipment. BRIEF DESCRIPTION OF DRAWINGS

[0023] The present application will be further described below in conjunction with the drawings and examples.

[0024] Figure 1 is the first overall structure schematic diagram of the present application.

[0025] Figure 2 is the second overall structure schematic diagram of the present application.

[0026] Figure 3 is the partial sectional view of the closed material bin, the partition plate, the switch plate and the outer plate frame in the present application.

[0027] Figure 4It is the partial sectional view of the closed material bin, air distribution plate, air supply plate and air inlet pipe in the application.

[0028] Figure 5 It is the partial sectional view of the outer plate frame, filter core, air inlet pipe and wedge-shaped bin in the application.

[0029] Figure 6 It is the partial sectional view of the catheter, wedge-shaped bin, filter core and closure block in the application.

[0030] In the figure: 1, closed material bin; 2, filtering mechanism; 3, wind power mechanism; 11, partition; 12, switch plate; 13, electric cylinder; 21, filter plate; 22, driving assembly; 31, slight wind assembly; 32, switching assembly; 33, air distribution pipeline; 111, closure block; 211, outer plate frame; 212, filter core; 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 bin; 332, catheter. DETAILED DESCRIPTION

[0031] The embodiments of the present application are described in detail below. The embodiments described below are exemplary only, and are not to be understood as limiting the present application. If a specific technique or condition is not mentioned in the embodiments, the technique or condition described in the literature in the art or according to the product manual is used.

[0032] Referring to Figure 1 and Figure 3 , a ventilation and dust removal device for plastic color master batch production includes a closed material bin 1 for continuously moving the material horizontally, a partition 11 fixedly installed inside the closed material bin 1 to separate the inside thereof into upper and lower passages, the left side of the partition 11 being attached to the inner wall of the closed material bin 1, and a gap being left between the right side of the partition 11 and the inner wall of the closed material bin 1, so that the right parts of the upper and lower passages are communicated.

[0033] Referring to Figure 1 , Figure 2 and Figure 3 , the right side of the closed material bin 1 is a feeding port for feeding the material to the right side of the lower passage, the lower part of the closed material bin 1 is a material drop port communicated with the left side of the lower passage, the inside of the closed material bin 1 is provided with a filtering mechanism 2 for blocking and isolating the laid material, and a wind power mechanism 3 for providing two kinds of wind to alternately blow the material.

[0034] During dust removal, the material drop port is communicated with the feeding port of the plastic material crushing device, so that the material in the feeding port slides to the inside of the closed material bin 1 under the action of gravity, and the material is laid in the closed material bin 1 and continuously moves leftward along the lower passage of the closed material bin 1, in the process, the wind power mechanism 3 blows and separates the dust floating on the surface of the material with continuous unidirectional slight wind.

[0035] The dust is moved along the lower channel to the left by the airflow, and then the airflow carries the dust through the gap between the partition plate 11 and the closed material bin 1 to the right part of the upper channel, and then the airflow continues to carry the dust along the upper channel to the outside of the closed material bin 1, realizing the collection of the dust.

[0036] During the dust removal process, the filtering mechanism 2 intermittently blocks and isolates the material into several areas, and when the material is blocked, as shown in Figure 5 , the wind power mechanism 3 blows strong wind to blow off the dust and make it adhere to the filtering mechanism 2; when the material is not blocked, as shown in Figure 3 , the wind power mechanism 3 can clean the filtering mechanism 2 by strong wind; thereby, continuous separation by one-way wind and accurate dust removal and recovery by strong wind are realized, and high-efficiency dust removal operation with low material loss is realized.

[0037] Subsequently, the material completely removed of dust moves to the left and slides to the plastic material crushing device through the material falling port under the action of gravity for crushing treatment, realizing continuous high-quality color master batch production.

[0038] It should be noted that in the present embodiment, the closed material bin 1 can be arranged in an inclined manner with the right part being higher than the left part, so that the material continuously slides 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 closed material bin 1 to continuously vibrate the material, thereby forcing the material to continuously slide to the left along the lower channel. The above two methods are common technical means in the prior art, and will not be described herein, and are not shown in the drawings.

[0039] Referring to Figure 1 , Figure 2 , Figure 3 and Figure 4 , the wind power mechanism 3 includes a breeze assembly 31 for forming a lower-in and upper-out continuous one-way wind in the two channels. The breeze assembly 31 includes an air inlet pipe 311 fixedly installed at the left front part of the closed material bin 1 and communicating with the lower channel, and an air outlet pipe 312 fixedly installed at the left part of the closed material bin 1 and communicating with the upper channel. The air outlet pipe 312 communicates with the bag-type dust collector in the prior art.

[0040] The air inlet pipe 311 is connected with a first fan in the prior art. The first fan passes the breeze with a wind speed of 0.5 to 1.5 m / s into the left side of the lower channel of the closed material bin 1 through the air inlet pipe 311, so that the breeze blows up the extremely light dust of 5 to 20 microns floating on the upper layer of the material and suspended in the closed material bin 1, while ensuring that the material moves smoothly to the left, so that the breeze airflow carries these extremely light dust to move to the air outlet pipe 312 through the upper channel, thereby realizing the collection of the extremely light dust.

[0041] Referring to Figure 1 , Figure 3 ,Figure 5 and Figure 6 The filtering mechanism 2 comprises several filtering plates 21 arranged at equal intervals left and right and sealingly sliding up and down in the closed bin 1. The filtering position of the filtering plates 21 is alternately moved in the upper and lower passages by the driving assembly 22 arranged on the closed bin 1. The partition plate 11 is provided with a clearance slot corresponding to the position of the filtering plate 21.

[0042] After a period of breeze dust removal, all the filtering plates 21 are driven to move downward by the driving assembly 22, and the filtering plates 21 pass through the clearance slots corresponding to the partition plate 11 to the inside of the lower passage, so that the several filtering plates 21 moved to the lower passage block and isolate the material into several independent areas, and then the right movement of the material in each area is blocked by the filtering plates 21.

[0043] Referring to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 The air force mechanism 3 further comprises a switching assembly 32 for intermittently introducing strong wind into the left part of the lower passage. The switching assembly 32 comprises a gas distribution plate 321 fixedly installed on the left side of the closed bin 1. The gas distribution plate 321 is provided with two air ports. The air port located at the front part is in communication with the lower passage. A wind supply plate 322 is sealingly and slidingly arranged on the left side of the gas distribution plate 321. The wind supply plate 322 is provided with a through hole penetrating left and right. The left side of the through hole is connected with the second air fan in the prior art. A hydraulic cylinder two 323 is fixedly installed on the closed bin 1. The telescopic section of the hydraulic cylinder two 323 is fixedly connected with the wind supply plate 322.

[0044] When the filtering plates 21 block and isolate the material, the telescopic section of the hydraulic cylinder two 323 is retracted, so that the through hole on the wind supply plate 322 is in communication with the air port at the front part of the gas distribution plate 321, thereby enabling the second air fan to introduce strong wind with a wind speed of 2.5 to 5.0 m / s into the left side of the lower passage of the closed bin 1 through the through hole and the front air port, so that the strong wind blows and slightly stirs the material, exposes and separates the dust wrapped inside the material, and the dust is blown by the strong wind to the filtering plates 21. The fine dust passes through the filtering plates 21 and moves along the upper passage to the air outlet pipe 312 for collection. The agglomerated dust adheres to the left side of the filtering plates 21. The raw material with a particle size generally in the range of 100 to 500 μm cannot pass through the filtering plates 21 and is difficult to adhere to the filtering plates 21 due to its own weight, thereby preventing the loss of raw material and realizing high-efficiency separation of dust and raw material with low loss of raw material.

[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 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 left side of the partition is fitted to the inner wall of the enclosed silo, while the right side of the partition is left with a gap to allow the right sides of the upper and lower channels to be connected.

5. 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.

6. 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.

7. 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.

8. The ventilation and dust removal equipment for producing plastic masterbatch according to claim 7, 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.

9. A ventilation and dust removal device for the production of 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.

10. A ventilation and dust removal device for producing plastic masterbatch according to claim 1, characterized in that, The partition plate has a clearance groove for the filter plate to pass through at the corresponding position. 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.

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