Multi-stage gas dust removal device in rubber additive powder feeding process

Abstract

The invention provides a multistage gas dust removal device for a rubber additive powder feeding process, and belongs to the technical field of gas dust removal devices. Comprising an outer cylinder, the bottom of the outer cylinder is fixedly connected with a feeding port of the rubber internal mixer through a flange, an inner cylinder is arranged on the inner side of the outer cylinder, a containing cavity is formed between the outer cylinder and the inner cylinder, the outer portion of the outer cylinder is fixedly connected with a negative pressure fan communicated with the containing cavity, and a filter cylinder is arranged in the containing cavity in a sleeved mode; and through openings which are uniformly distributed and correspond to the positions of the filter cartridges are formed in the inner cylinder. By arranging the negative pressure suction structure composed of the outer cylinder, the inner cylinder and the negative pressure fan and designing the inverted horn-shaped shielding area at the top of the inner cylinder, the negative pressure fan is started after feeding is completed, so that negative pressure is formed in the inner cylinder, raised dust can be actively and efficiently sucked into the storage cavity, the dust is prevented from being diffused into workshop air, and the dust removal efficiency is improved. The production environment pollution problem is solved from the source, and meanwhile respiratory system health of operators is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of gas dust removal equipment technology, and in particular to a multi-stage gas dust removal device for the feeding process of rubber additive powder. Background Technology

[0002] Rubber additives such as carbon black, silica, and accelerators are important raw materials in the rubber compounding process. They usually exist in powder or small granule form. During the production of rubber products, operators need to put these powdered additives into the feed inlet of processing equipment such as internal mixers or open mills to complete the mixing with raw rubber and other compounding agents.

[0003] Currently, during the feeding of powdered additives in rubber processing enterprises, the fine additive powder is easily stirred up by airflow disturbances during bag breaking, dumping, and feeding processes, forming a large amount of dust. This dust spreads into the workshop air, causing serious pollution to the production environment and increasing cleaning and maintenance costs. On the other hand, long-term inhalation of dust containing chemical additives by operators can seriously harm their respiratory health and easily lead to occupational diseases. Even if some production sites are equipped with simple dust collection devices, they usually only use single-stage filtration or simple dust collection bags to collect dust-laden gas, with limited treatment effects. Although some enterprises are equipped with simple dust collection devices, they are mostly used as auxiliary dust removal methods and have not formed a systematic dust collection and treatment plan. More importantly, when these dust collection devices are cleaned, the collected dust will be stirred up again during the dumping process, forming secondary pollution. This not only fails to fundamentally solve the dust hazard problem, but also increases the cumbersomeness and difficulty of cleaning operations. Therefore, this application provides a multi-stage gas dust removal device for the rubber additive powder feeding process to meet the needs. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a multi-stage gas dust removal device for the feeding process of rubber additive powder, so as to solve the problems of serious dust pollution, limited treatment effect of simple dust collection devices, and easy generation of secondary dust during cleaning in the existing rubber additive powder feeding process.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: A multi-stage gas dust removal device for feeding rubber additive powder includes an outer cylinder, the bottom of which is fixedly connected to the feed inlet of a rubber mixer via a flange. An inner cylinder is provided inside the outer cylinder, and a receiving cavity is formed between the outer and inner cylinders. A negative pressure fan connected to the receiving cavity is fixedly connected to the outside of the outer cylinder. A filter cylinder is sleeved in the receiving cavity. A through opening is formed on the inner cylinder, corresponding to the position of the filter cylinder. A primary filter assembly is provided inside the filter cylinder, and a secondary filter assembly is provided outside the filter cylinder. The primary filter assembly includes a filter hole formed by a uniform distribution on the filter cylinder and a dust accumulation area fixedly connected to the inside of the filter cylinder. The secondary filter assembly includes upper and lower symmetrical fixed plates fixedly connected to the outside of the filter cylinder. A partition plate is fixedly connected between the fixed plates, and a sponge block is sleeved between the partition plate and the partition plate.

[0006] Optionally, an inlet is fixedly connected to the top of the inner cylinder, and an inverted trumpet-shaped blocking area is provided between the inlet and the inner cylinder.

[0007] Optionally, the top of the filter cartridge extends above the top of the receiving cavity and is fixedly connected with symmetrically distributed handles. The ends of the handles extend to the outside of the outer cylinder, and a through grip groove is provided in the area where the handles are located on the outside of the outer cylinder.

[0008] Optionally, a positioning plate located on the outside of the outer cylinder is fixedly connected to the bottom of the handle. A positioning protrusion is welded on the positioning plate, and a positioning groove that matches the shape of the positioning protrusion is opened on the outside of the outer cylinder.

[0009] Optionally, a first weakening groove is provided at the connection between the positioning plate and the handle, and the positioning plate and the outer surface of the outer cylinder are in close contact with each other.

[0010] Optionally, the dust collection area is located below the filter holes, and the dust collection area has grooves for collecting dust.

[0011] Optionally, the inner side of the filter cartridge is fitted with a movable disc that matches the shape of the dust accumulation area, and a uniformly distributed spring is fixedly connected between the movable disc and the bottom of the groove in the dust accumulation area.

[0012] Optionally, the outer ring of the movable disc fits into the inner wall of the filter cylinder, and a second sealing ring is fixedly connected to the top of the inner ring of the movable disc. The inner ring of the second sealing ring has a pressing surface that matches the external shape of the shielding area.

[0013] Optionally, a first sealing ring is fixedly connected to the top of the outer ring of the upper fixed plate, a sealing ring is fixedly connected to the bottom of the first sealing ring, and a sealing groove adapted to the shape of the sealing ring is opened on the top of the outer cylinder.

[0014] Optionally, the limiting plate has inclined edges on both sides that face outwards towards the filter cylinder, and a second weakening groove is provided at the connection between the limiting plate and the partition.

[0015] Compared with the prior art, the present invention has at least the following beneficial effects: In the above solution, a negative pressure suction structure consisting of an outer cylinder, an inner cylinder, and a negative pressure fan is set up, and an inverted trumpet-shaped shielding area is designed on the top of the inner cylinder. After the material is fed, the negative pressure fan is started to create negative pressure inside the inner cylinder, which can actively and efficiently suck the raised dust into the collection cavity, preventing the dust from spreading into the workshop air, solving the problem of production environment pollution from the source, and protecting the respiratory health of the operators.

[0016] By designing a primary filtration assembly consisting of a filter cartridge, filter holes, and a bottom dust collection area, and in conjunction with a liftable movable disc and spring structure, large dust particles are intercepted and temporarily adsorbed inside the filter cartridge when dusty air enters the collection chamber. After the negative pressure fan stops, the dust particles automatically settle and are stored in the dust collection area. When the filter cartridge is removed for maintenance, the movable disc is reset by the spring force, scraping the inner wall of the filter cartridge and pushing the dust into the dust collection area for sealing, effectively preventing secondary dust generation and achieving automatic collection of large dust particles and pollution control during cleaning and maintenance.

[0017] By setting a two-stage filtration assembly consisting of a fixed plate, baffle, limiting plate and sponge block on the outside of the filter cartridge, fine dust particles are efficiently adsorbed by the sponge block after passing through the first stage of filtration, which significantly improves the dust removal accuracy. The limiting plate is made of elastic material and has a second weakening groove. With the beveled design, the installation, disassembly and replacement of the sponge block is extremely convenient, reducing the difficulty and cost of maintenance.

[0018] By setting a handle with a positioning protrusion on the top of the filter cartridge and opening a corresponding positioning groove and a first weakening groove on the outer cylinder, when the filter cartridge is inserted into the receiving cavity, the positioning protrusion is embedded in the positioning groove to achieve a stable lock, ensuring the structural stability of the device in the working state; when cleaning is required, simply pull the handle upwards, and the positioning plate can bend and deform at the first weakening groove to make the positioning protrusion retract. The operation is simple and smooth, taking into account both working reliability and maintenance convenience.

[0019] By setting a first sealing ring and a sealing ring at the top of the secondary filter assembly, and forming a pressure seal with the movable disc and the inner cylinder shielding area at the bottom of the filter cartridge, the channels on both the inner and outer sides of the filter cartridge are effectively sealed when the device is in operation. This ensures that the airflow passes through the two-stage filter assembly strictly according to the preset path, completely eliminating the possibility of dust escaping from the gaps in the device, and further improving the sealing performance and dust removal effect of the device. Attached Figure Description

[0020] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the invention and, together with the specification, further serve to explain the principles of the invention and enable those skilled in the art to practice and use the invention.

[0021] Figure 1 A three-dimensional structural diagram of a multi-stage gas dust removal device for the rubber additive powder feeding process; Figure 2 This is a schematic diagram of the separate structure of the outer cylinder and the filter cylinder; Figure 3 This is a schematic diagram of the three-dimensional structure of the filter cartridge; Figure 4 A schematic diagram of the three-dimensional structure of the outer and inner cylinders; Figure 5 This is a schematic diagram of the cross-sectional structure of the filter cartridge; Figure 6 for Figure 5 Enlarged structural diagram at point A in the middle; Figure 7 for Figure 5 Enlarged structural diagram at point B; Figure 8 A schematic diagram of the structure in which the fixed plate, partition, and limiting plate are assembled; Figure 9 for Figure 8 Enlarged structural diagram at point C; Figure 10 This is a schematic diagram of the three-dimensional structure of the partition and the limiting plate; Figure 11 This is a schematic diagram of the end face structure of the limiting plate.

[0022] Figure label: 1. Outer cylinder; 2. Negative pressure fan; 3. Inner cylinder; 4. Shielding area; 5. Inlet; 6. Filter cartridge; 7. Handle; 8. Through opening; 9. Filter hole; 10. Fixing plate; 11. Partition; 12. Limiting plate; 13. Positioning plate; 14. Storage cavity; 15. First closed ring; 16. Spring; 17. Positioning groove; 18. Dust accumulation area; 19. Second closed ring; 20. Pressing surface; 21. Movable plate; 22. Positioning protrusion; 23. First weakening groove; 24. Sealing ring; 25. Bevel; 26. Second weakening groove; 27. Sponge block.

[0023] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiments of the present invention. However, this is only for illustrative purposes and is not intended to limit the present invention to this specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs. Detailed Implementation

[0024] The multi-stage gas dust removal device for the rubber additive powder feeding process provided by the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should also be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art can use other alternative methods to implement some known technologies; moreover, the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit the present invention.

[0025] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the art.

[0026] Generally, terms can be understood at least partly from their use in context. For example, depending at least partly on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood not necessarily to convey an exclusive set of factors, but rather, alternatively, depending at least partly on the context, to allow for the presence of other factors that are not necessarily explicitly described.

[0027] It is understood that the meanings of “on”, “above”, and “above” in this invention should be interpreted in the broadest manner, such that “on” means not only “directly on” something, but also includes the meaning of being “on” something with an intervening feature or layer, and that “above” or “above” means not only “on” something, but also includes the meaning of being “on” something without an intervening feature or layer.

[0028] Furthermore, spatially related terms such as “below,” “under,” “lower,” “above,” and “upper” are used herein for convenience to describe the relationship of one element or feature to one or more other elements or features, as illustrated in the accompanying drawings. Spatially related terms are intended to cover different orientations in the use or operation of the device other than those depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially related descriptive terms used herein can be interpreted similarly.

[0029] like Figures 1 to 11As shown, an embodiment of the present invention provides a multi-stage gas dust removal device for the feeding process of rubber additive powder, including an outer cylinder 1. The bottom of the outer cylinder 1 is fixedly connected to the inlet of a rubber mixer via a flange. An inner cylinder 3 is provided inside the outer cylinder 1, and a receiving cavity 14 is opened between the outer cylinder 1 and the inner cylinder 3. A negative pressure fan 2 is fixedly connected to the outside of the outer cylinder 1 and communicates with the receiving cavity 14. A filter cylinder 6 is sleeved in the receiving cavity 14. A through opening 8 is opened on the inner cylinder 3, which is evenly distributed and corresponds to the position of the filter cylinder 6. A primary filter assembly is provided inside the filter cylinder 6, and a secondary filter assembly is provided outside the filter cylinder 6. The entire device is installed at the inlet of the mixer via the flange at the bottom of the outer cylinder 1 and corresponding bolt connections. After the rubber additive feeding operation is completed, the negative pressure fan 2 outside the outer cylinder 1 is started first, and the dust is removed through the receiving cavity 14 and the through opening 8 on the inner cylinder 3. The continuous extraction of air from the inner side of the inner cylinder 3 creates a negative pressure inside the inner cylinder 3. This negative pressure causes the dust particles to pass through the through opening 8 and enter the receiving cavity 14 between the inner cylinder 3 and the outer cylinder 1. The air mixed with dust enters the receiving cavity 14 and undergoes preliminary filtration by the primary filter assembly inside the filter cylinder 6, removing larger particles. Then, the air mixed with dust undergoes secondary filtration by the secondary filter assembly, removing smaller particles. This achieves multi-stage dust removal. The negative pressure fan 2 stops after operating for a period of time. Large dust particles in the primary filter assembly accumulate under their own gravity and are stored in the primary filter assembly, awaiting subsequent centralized processing. This effectively prevents dust from spreading into the workshop air and causing serious pollution to the production environment. It also prevents operators from inhaling dust containing chemical additives for a long time, ensuring the respiratory health of the workers.

[0030] In this embodiment, as Figures 1 to 4 As shown, an inlet 5 is fixedly connected to the top of the inner cylinder 3. An inverted trumpet-shaped shielding area 4 is provided between the inlet 5 and the inner cylinder 3. The inlet 5 is the input position of the entire device. After the device is installed and fixed, it replaces the original feed port of the internal mixer to facilitate the feeding operation of rubber additives. The inverted trumpet-shaped structure of the shielding area 4 can form a certain shielding effect on the top of the inner cylinder 3, which reduces the dust emitted during the feeding process to a certain extent. At the same time, it makes the opening at the top of the inlet 5 smaller than the diameter of the inner wall of the inner cylinder 3. When the negative pressure fan 2 works to generate negative pressure inside the inner cylinder 3, it can further enhance the negative pressure effect and better attract the emitted dust.

[0031] In this embodiment, as Figures 2 to 7As shown, the top of the filter cylinder 6 extends above the top of the receiving cavity 14 and is fixedly connected to symmetrically distributed handles 7. The ends of the handles 7 extend to the outside of the outer cylinder 1, and a through grip groove is provided in the area of ​​the handles 7 located on the outside of the outer cylinder 1. The bottom end of the handles 7 is fixedly connected to a positioning plate 13 located on the outside of the outer cylinder 1. A positioning protrusion 22 is welded on the positioning plate 13, and a positioning groove 17 that matches the shape of the positioning protrusion 22 is provided on the outside of the outer cylinder 1. A first weakening groove 23 is provided at the connection between the positioning plate 13 and the handle 7, and the positioning plate 13 fits snugly against the outside of the outer cylinder 1. The opening of the first weakening groove 23 makes the thickness of the positioning plate 13 at the first weakening groove 23 thinner and weaker, making it easier to deform under external force. The handle 7 on the top of the filter cylinder 6 allows the operator to regularly remove the filter cylinder 6 from the storage cavity 14 for cleaning, removing large particles of dust stored in the filter cylinder 6, and replacing the components in the secondary filtration assembly to maintain the overall dust removal effect of the device in the long term. In specific operation, simply pull upwards on the grip groove on the handle 7 to pull the filter cylinder 6 out of the storage cavity 14. The operation is simple and convenient. The positioning protrusion 22 and positioning groove 17 ensure the stability of the filter cylinder 6 when it is fitted into the storage cavity 14. When the filter cylinder 6 is fully fitted into the storage cavity 14, the positioning protrusion 22 on the positioning plate 13 is also embedded into the positioning groove 17, forming a limiting and fixing effect on the positioning plate 13 and the handle 7. During the process of pulling out the filter cylinder 6, the positioning plate 13 will bend and deform at the first weakening groove 23 so that the positioning protrusion 22 can be removed from the positioning groove 17, releasing the limiting and fixing effect on the handle 7, allowing the handle 7 to drive the filter cylinder 6 to be pulled out normally. This design can ensure the stability of the filter cylinder 6 in the working state, and also take into account the simplicity and convenience of the operation when disassembling and maintaining the filter cylinder 6.

[0032] In this embodiment, as Figures 2 to 6As shown, the primary filter assembly includes uniformly distributed filter holes 9 on the filter cylinder 6 and a dust collection area 18 fixedly connected to the inner side of the filter cylinder 6. The dust collection area 18 is located below the filter holes 9 and has grooves for collecting dust. A movable disc 21 adapted to the shape of the dust collection area 18 is fitted inside the filter cylinder 6. A uniformly distributed spring 16 is fixedly connected between the movable disc 21 and the bottom of the groove in the dust collection area 18. The outer ring of the movable disc 21 fits against the inner wall of the filter cylinder 6, and a second sealing ring 19 is fixedly connected to the top of the inner ring of the movable disc 21. The inner ring of the second sealing ring 19 has a pressing surface 20 adapted to the external shape of the shielding area 4. The primary filter assembly is mainly used to target large dust particles in the air mixed with dust. These dust particles are large and have a certain weight. If not treated separately, they are prone to accumulating and clogging the dust removal channel of the device under their own weight. Therefore, the primary filter assembly is used to prioritize separation. Specifically, large dust particles cannot pass through. The filter holes 9 on the filter cartridge 6 prevent large dust particles from passing through when the entire device is in operation. Simultaneously, the negative pressure generated by the negative pressure fan 2 causes them to temporarily adhere to the inner wall of the filter cartridge 6. After the negative pressure fan 2 stops working, the large dust particles fall and accumulate under their own gravity, storing in the dust accumulation area 18 at the bottom of the filter cartridge 6. The movable disc 21 is used to form a seal between the filter cartridge 6 and the inner cylinder 3 during operation. When the filter cartridge 6 is fully inserted into the receiving cavity 14, the movable disc 21, due to the second sealing ring 19 and the pressure surface 20,... The movable disc 21 and the shielding area 4 on the inner cylinder 3 are in compressive contact, which stretches the spring 16 between the movable disc 21 and the dust accumulation area 18. The second sealing ring 19 and the pressing surface 20 can limit the movable disc 21, preventing it from being inserted into the receiving cavity 14 along with the filter cartridge 6. On the other hand, they can also seal the space between the filter cartridge 6 and the inner cylinder 3 when the filter cartridge 6 is working, forming a seal to prevent dust from escaping during the primary dust removal process. When the filter cartridge 6 is removed for cleaning and maintenance, the outer ring of the movable disc 21 is in contact with the inner wall of the filter cartridge 6. Meanwhile, the movable disc 21 is also subjected to the elastic force of the spring 16. Therefore, as the filter cartridge 6 is pulled out, the movable disc 21 can gradually return to its original position under the elastic force of the spring 16 and scrape the inner wall of the filter cartridge 6, scraping the large dust particles adhering to the inner wall of the filter cartridge 6 into the dust accumulation area 18. At the same time, when the filter cartridge 6 is completely pulled out, the movable disc 21 is sealed at the top of the dust accumulation area 18 under the elastic force of the spring 16, forming a seal on the dust accumulation area 18. This effectively prevents the dust that has accumulated when the filter cartridge 6 is disassembled for centralized dust treatment from being stirred up again and causing secondary pollution.

[0033] In this embodiment, as Figures 3 to 11As shown, the secondary filtration assembly includes symmetrically arranged upper and lower fixed discs 10 fixedly connected to the outside of the filter cylinder 6. Evenly distributed partitions 11 are fixedly connected between the fixed discs 10. Limiting plates 12 are fixedly connected to the outside of the partitions 11, and a sponge block 27 is sleeved between the partitions 11 and the limiting plates 12. A first sealing ring 15 is fixedly connected to the top of the outer ring of the upper fixed disc 10, and a sealing ring 24 is fixedly connected to the bottom of the first sealing ring 15. A sealing groove matching the shape of the sealing ring 24 is formed on the top of the outer cylinder 1. The limiting plate 12 has inclined edges 25 on both sides facing outwards from the filter cylinder 6, and a second weakening groove 26 is provided at the connection between the limiting plate 12 and the partition plate 11. The opening of the second weakening groove 26 makes the limiting plate 12 thinner and weaker, and easier to deform under external force. The partition plate 11 and the limiting plate 12 are designed to cooperate with the filter cylinder 6 to form a space for assembling the sponge block 27. The sponge block 27 is the main structure of the secondary filter component. Its fine pores can effectively absorb small dust particles in the mixed dust in the air, thereby greatly reducing the dust content in the air extracted by the negative pressure fan 2. Together with the primary filter component, it forms a complete multi-stage gas dust removal system. The limiting plate 12 is made of elastic plastic, which has a certain strength to ensure the clamping and limiting effect of the sponge block 27, and also has good deformation ability, which facilitates the operation of relevant personnel when disassembling and replacing the sponge block 27. The inclined edges 25 facing outwards from the filter cylinder 6 The design increases the inlet size of the installation area of ​​the sponge block 27 formed by the partition 11, the limiting plate 12, and the filter cylinder 6, facilitating the installation of the sponge block 27. When installing the sponge block 27, the limiting plate 12 can be bent at the second weakening groove 26 by squeezing the inclined edge 25, further increasing the inlet size of the installation area of ​​the sponge block 27. When disassembling the sponge block 27, the inclined edge 25 can be reversed to bend the limiting plate 12 at the second weakening groove 26, making the installation, disassembly, and replacement of the sponge block 27 very convenient. The first sealing ring 15 and the sealing ring 24 can form a seal between the top of the filter cylinder 6 and the outer cylinder 1 when the filter cylinder 6 is inserted into the receiving cavity 14. This ensures that the entire filter cylinder 6, as well as the primary and secondary filter components inside and outside it, can maintain a sealed dust and air passage during dust removal, further preventing dust escape during the dust removal process and further improving the overall device design.

[0034] This invention encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this invention. To provide the public with a thorough understanding of this invention, specific details are described in detail in the following preferred embodiments; however, those skilled in the art will fully understand the invention even without these details. Furthermore, to avoid unnecessary misunderstanding of the essence of this invention, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0035] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A multi-stage gas dust removal device for the feeding process of rubber additive powder, comprising an outer cylinder, the bottom of which is fixedly connected to the feed inlet of a rubber mixer via a flange, characterized in that, An inner cylinder is provided inside the outer cylinder, and a storage cavity is provided between the outer cylinder and the inner cylinder. A negative pressure fan is fixedly connected to the outside of the outer cylinder and communicates with the storage cavity. A filter cylinder is sleeved in the storage cavity, and a through opening is provided on the inner cylinder that corresponds to the position of the filter cylinder. The filter cartridge has a primary filtration component on its inner side and a secondary filtration component on its outer side. The primary filtration assembly includes evenly distributed filter holes on the filter cartridge and a dust accumulation area fixedly connected to the inside of the filter cartridge. The secondary filtration assembly includes upper and lower symmetrical fixed discs fixedly connected to the outside of the filter cartridge. Evenly distributed partitions are fixedly connected between the fixed discs. Limiting plates are fixedly connected to the outside of the partitions, and a sponge block is sleeved between the partitions and the limiting plates.

2. The multi-stage gas dust removal device for the rubber additive powder feeding process according to claim 1, characterized in that, An inlet is fixedly connected to the top of the inner cylinder, and an inverted trumpet-shaped blocking area is provided between the inlet and the inner cylinder.

3. The multi-stage gas dust removal device for the rubber additive powder feeding process according to claim 1, characterized in that, The top of the filter cartridge extends to the top of the storage cavity and is fixedly connected with symmetrically distributed handles. The ends of the handles extend to the outside of the outer cylinder, and a through grip groove is provided in the area where the handles are located on the outside of the outer cylinder.

4. The multi-stage gas dust removal device for the rubber additive powder feeding process according to claim 3, characterized in that, The bottom of the handle is fixedly connected to a positioning plate located on the outside of the outer cylinder. Positioning protrusions are welded on the positioning plate, and positioning grooves that match the shape of the positioning protrusions are opened on the outside of the outer cylinder.

5. The multi-stage gas dust removal device for the rubber additive powder feeding process according to claim 4, characterized in that, A first weakening groove is provided at the connection between the positioning plate and the handle, and the positioning plate and the outer surface of the outer cylinder are in close contact with each other.

6. The multi-stage gas dust removal device for the rubber additive powder feeding process according to claim 1, characterized in that, The dust collection area is located below the filter holes, and the dust collection area has grooves for collecting dust.

7. The multi-stage gas dust removal device for the rubber additive powder feeding process according to claim 6, characterized in that, The inner side of the filter cartridge is fitted with a movable disc that matches the shape of the dust accumulation area. The movable disc is fixedly connected to the bottom of the groove in the dust accumulation area by evenly distributed springs.

8. The multi-stage gas dust removal device for the rubber additive powder feeding process according to claim 1, characterized in that, The outer ring of the movable disc fits snugly against the inner wall of the filter cylinder, and a second sealing ring is fixedly connected to the top of the inner ring of the movable disc. The inner ring of the second sealing ring has a pressing surface that matches the shape of the outer part of the shielding area.

9. The multi-stage gas dust removal device for the rubber additive powder feeding process according to claim 8, characterized in that, The top of the outer ring of the fixed plate located above is fixedly connected to a first closing ring, and the bottom of the first closing ring is fixedly connected to a sealing ring. The top of the outer cylinder is provided with a sealing groove that matches the shape of the sealing ring.

10. The multi-stage gas dust removal device for the rubber additive powder feeding process according to claim 9, characterized in that, The limiting plate has inclined edges on both sides that face outwards from the filter cylinder, and a second weakening groove is provided at the connection between the limiting plate and the partition.

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