A dust collecting and processing device for processing a rubber compound capable of preventing a filter bag from being caked

Abstract

This invention discloses a dust collection and treatment device for rubber compounding that can prevent filter bag caking, relating to the field of industrial waste gas dust treatment technology. It includes a housing, treatment components, a support frame, a vibrating seat, a limiting groove, a threaded groove, and an ultrasonic transducer. In this invention, each filter bag corresponds to an independent ultrasonic transducer, all connected to the bottom of the frame via studs. High-frequency vibration can be directly and efficiently transmitted to the entire cage frame and filter bag, causing uniform high-frequency micro-amplitude vibration on the filter bag surface. This disrupts the adhesion between sticky dust and the filter bag fibers, preventing dust from tightly accumulating and forming a caking layer. Simultaneously, it loosens and disperses the already attached stubborn sticky dust layer. Combined with high-pressure pulse jet cleaning, the strong shaking generated by the instantaneous expansion of the dust collector bag completely shakes off the loosened sticky dust, effectively removing sticky dust deep inside the filter bag fibers, avoiding filter bag caking, thereby extending the filter bag replacement cycle and reducing operating costs.

Description

Technical Field

[0001] This invention relates to the field of industrial waste gas and dust treatment technology, specifically to a dust collection and treatment device for compound rubber processing that can prevent filter bag caking. Background Technology

[0002] Mixing is the process of mixing raw rubber or plasticized raw rubber with compounding agents using a rubber mixing mill to form a compound. It is the most important production process in rubber processing. During the processes of internal mixing, kneading, and open milling, a large amount of mixed dust containing carbon black, rubber particles, vulcanizing auxiliaries, and softening oil is generated. This type of dust has significant characteristics such as high viscosity, high oil content, fine particles, and strong adhesion. If it cannot be effectively collected and treated, it will not only seriously pollute the workshop production environment and endanger the respiratory health of operators, but also adhere to the surface of equipment and affect its normal operation. At the same time, the dispersed dust poses a safety hazard of fire and explosion. Pulse bag dust collectors are the most widely used dust treatment equipment in the rubber compounding industry due to their high filtration efficiency, large air volume handling capacity, and stable operation.

[0003] Currently, most dust collection and treatment devices used in rubber compound processing rely on high-pressure pulse jet cleaning systems, which are only effective for dry dust. For the sticky dust from rubber compounds, the instantaneous impact force generated by the pulse jet can only shake off loose dust on the surface of the filter bag, making it difficult to remove sticky dust that has penetrated deep into the filter bag fibers. As the operating time increases, the residual sticky dust will gradually compact and solidify, forming a dense and hard caking layer on the surface of the filter bag. This leads to a sharp decrease in the air permeability of the filter bag, a surge in system resistance, and ultimately a loss of filtration capacity. In addition, if the dust-laden gas is not buffered when it enters the device, the concentrated airflow will continuously impact the filter bag in a local area, causing accelerated wear of that part of the filter bag and shortening its service life. Furthermore, large particles and high-density rubber compound dust in the dust-laden gas will also quickly clog the pores of the filter bag, reducing filtration efficiency. Therefore, a dust collection and treatment device for rubber compound processing that can prevent filter bag caking is proposed to solve the problems mentioned above. Summary of the Invention

[0004] To address the aforementioned technical problems, this invention provides a dust collection and treatment device for rubber compound processing that prevents filter bag caking. This solution solves the problem mentioned in the background section: currently, the dust collection and treatment systems used in rubber compound processing in the industry mostly rely on high-pressure pulse jet cleaning, which only has a good cleaning effect on dry dust. For the sticky dust of rubber compound, the instantaneous impact force generated by pulse jet cleaning can only shake off loose floating dust on the surface of the filter bag, making it difficult to remove sticky dust deep inside the filter bag fibers. As the operating time increases, the residual sticky dust will gradually compact and solidify, forming a dense and hard caking layer on the surface of the filter bag. This leads to a sharp decrease in the air permeability of the filter bag, a surge in system resistance, and ultimately a loss of filtration capacity. Furthermore, if the dust-laden gas is not buffered when it enters the device, the concentrated airflow will continuously impact the filter bag in localized areas, causing accelerated wear of those filter bags and shortening their service life. Additionally, large particles and high-density rubber compound dust in the dust-laden gas will quickly clog the filter bag pores, reducing filtration efficiency.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A dust collection and treatment device for rubber compound processing that can prevent filter bag caking includes: The box body has a perforated plate fixedly connected inside, and an L-shaped partition is fixedly connected to the lower end of the perforated plate. The processing components, including multiple sets of the processing components, are all disposed on the inner side of the perforated plate; The processing component includes: The frame is fixedly installed on the inner side of the perforated plate, and the lower end of the frame is sequentially fixedly connected to a fixing post, a connecting seat, a limiting boss and a stud. Dust collector bags are fitted over the outside of the frame and fixing columns; A support frame is located at the lower end of the processing component; The vibration seat is fixedly connected inside the support frame; A limiting groove is provided at the upper end of the vibration seat; The threaded groove is located at the bottom inner side of the limiting groove; An ultrasonic transducer is fixedly installed at the bottom of the inner side of a threaded groove, and the stud is threadedly connected to the inside of the threaded groove, with the bottom end of the stud abutting against the ultrasonic transducer. The guide plate is fixedly connected to the lower end of the L-shaped baffle, and multiple vertically distributed V-shaped grooves are opened on the right end of the guide plate. Inclined plate, fixedly connected to the bottom end of the guide plate; The fan is fixedly installed at the right end of the housing; The exhaust pipe is connected at one end to the exhaust port of the fan; An air pump is fixedly installed on the inner bottom of an L-shaped partition, and the input end of the air pump is connected to the exhaust pipe through an air inlet pipe. The nozzles, including multiple nozzles, are embedded in the inner bottom end of the L-shaped partition; The venturi tube is positioned above the processing unit.

[0006] Preferably, the right side of the housing is provided with a kneader end cover and a three-in-one-out connecting plate. The front end of the kneader end cover is fixedly connected to a front gas collection hood, and the left and right ends of the kneader end cover are fixedly connected to side gas collection hoods. The three inlets of the three-in-one-out connecting plate are respectively connected to the front gas collection hood and the two side gas collection hoods through collection pipes. The outlet of the three-in-one-out connecting plate is connected to a conveying pipe, and the other end of the conveying pipe is connected to the right end of the housing.

[0007] Preferably, the upper end of the dust collector bag is clamped and fixed by a frame and a perforated plate, and a rope groove is provided on the outer surface of the fixing post. A tightening rope is sleeved on the outer side of the dust collector bag at the corresponding position of the rope groove, which is used to tighten and fix the lower end of the dust collector bag to the fixing post.

[0008] Preferably, the support frame is fixedly connected to the inside of the box, the support frame is grid-shaped, and the upper end of the support frame is a downward sloping surface.

[0009] Preferably, the multiple sets of vibration seats correspond one-to-one with the multiple sets of processing components, the diameter of the threaded groove is smaller than that of the limiting groove, and the limiting boss is inserted into the inside of the limiting groove to limit the screw insertion depth.

[0010] Preferably, the air inlet of the fan is connected to the interior of the housing, the connection area is located at the upper end of the perforated plate, and the end of the exhaust pipe away from the fan is connected to a one-way valve.

[0011] Preferably, the output end of the air pump is connected to a main air supply pipe, and the other end of the main air supply pipe is connected to multiple branch air supply pipes, the other ends of the multiple branch air supply pipes being respectively connected to the interior of multiple nozzles.

[0012] Preferably, the tops of the multiple nozzles correspond one-to-one with the tops of the multiple V-shaped grooves, the jet direction is vertically downward, and the inclined plate is tilted towards the air intake direction.

[0013] Preferably, a high-pressure gas storage tank is fixedly installed on the left end of the housing. Multiple blow pipes are connected to the outside of the high-pressure gas storage tank. The other end of each blow pipe passes through the left end of the housing and is connected to multiple Venturi tubes. Each Venturi tube corresponds to a set of processing components. Each blow pipe is equipped with an electromagnetic pulse valve.

[0014] Preferably, a dust collection hopper is fixedly connected to the lower end of the housing, and a supporting base is fixedly connected to the lower end of the dust collection hopper.

[0015] The beneficial effects of this invention compared to the prior art are: In this solution, each filter bag corresponds to an independent ultrasonic transducer, which is tightly connected to the bottom of the frame via studs. High-frequency vibration can be directly and efficiently transmitted to the entire cage frame and filter bag, causing uniform high-frequency micro-amplitude vibration on the surface of the filter bag. This vibration can break the adhesion between sticky dust and filter bag fibers, preventing dust from tightly accumulating and forming a caking layer. At the same time, it loosens and disperses the already attached stubborn sticky dust layer, shaking off some loose dust. Combined with high-pressure pulse jet cleaning, the strong shaking generated by the instantaneous expansion of the dust collector bag completely shakes off the loosened sticky dust. The combination of these two methods can effectively remove sticky dust deep inside the filter bag fibers, avoid filter bag caking, thereby extending the filter bag replacement cycle and reducing operating costs.

[0016] In this design, the baffle plate directly facing the air inlet blocks the high-speed dust-laden airflow from directly impacting the filter bags, preventing excessive wear on local filter bags due to excessive airflow velocity. The vertically distributed V-shaped grooves on the baffle plate divide the concentrated high-speed airflow into multiple uniform airflows, guiding them to diffuse throughout the entire filtration area and ensuring uniform airflow load on all filter bags. The inclined plate tilted towards the air inlet forms a pre-settling channel with the baffle plate. After the dust-laden airflow impacts the inclined plate, its direction changes drastically. Large particles and high-density compound rubber dust settle directly into the dust collection hopper under the action of inertial force, reducing the filtration load on subsequent filter bags and slowing down the clogging speed of the filter bag pores. At the same time, the air pump draws in the filtered clean air and continuously blows it downwards through nozzles corresponding to the V-shaped grooves, preventing sticky dust from accumulating and hardening on the surface of the baffle plate and inclined plate, ensuring the long-term stability of the airflow distribution.

[0017] In this solution, the front dust collection hood and the two side dust collection hoods form a three-sided enclosure structure, which can capture dust overflowing from the front opening of the kneader and the gaps on the left and right sides from all directions, preventing dust from spreading into the workshop environment. The three-in-one-out connecting plate can balance the airflow resistance of the three independent dust collection pipes, ensuring that the negative pressure of the three dust collection hoods is uniform and consistent, avoiding the problem of poor dust collection effect on one side, which helps to improve the overall dust collection efficiency and improve the workshop working environment.

[0018] In this solution, the air pump draws filtered clean air from the exhaust pipe through the air inlet pipe as the purging air source. This avoids the problem of nozzle clogging caused by directly drawing dusty air from the workshop, and eliminates the need for frequent replacement of the air storage tank. This achieves a long-term stable supply of air and reduces operating costs. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the present invention from another perspective; Figure 3 This is a schematic diagram of the internal structure of the box in this invention; Figure 4 forFigure 3 A magnified view of a portion of point A in the middle; Figure 5 This is a schematic diagram of the processing component in this invention; Figure 6 for Figure 5 A magnified view of a portion of point B in the middle; Figure 7 This is a schematic diagram of the skeleton connection in this invention; Figure 8 This is a schematic diagram of the structure of the vibration seat in this invention; Figure 9 This is a schematic diagram of the connection of the L-shaped partition in this invention; Figure 10 This is a schematic diagram of the nozzle installation in this invention; Figure 11 Figure 10 A magnified view of a portion of point C.

[0020] The numbers on the map are: Box body; 101. Perforated plate; 102. L-shaped partition; 103. Dust collection hopper; 104. Support base frame; 2. Kneader end cover; 3. Processing components; 301. Frame; 302. Fixing column; 303. Connecting seat; 304. Limiting boss; 305. Stud; 306. Dust collector bag; 307. Rope groove; 308. Binding rope; 4. Support frame; 5. Vibration seat; 6. Limiting groove; 7. Threaded groove; 8. Ultrasonic transducer; 9. Front gas collection hood; 10. Side gas collection hood; 11. Three-inlet-one-outlet connecting plate; 12. Collection pipe; 13. Delivery pipe; 14. Guide plate; 15. V-groove; 16. Inclined plate; 17. Fan; 18. Exhaust pipe; 19. One-way valve; 20. Air pump; 21. Main gas supply pipe; 22. Branch gas supply pipe; 23. Nozzle; 24. Inlet pipe; 25. High-pressure gas storage tank; 26. Pulse pipe; 27. Electromagnetic pulse valve; 28. Venturi tube. Detailed Implementation

[0021] The following description is intended to disclose the invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0022] Reference Figures 1-3 As shown, a dust collection and treatment device for compound rubber processing that can prevent filter bag caking includes a housing 1. A perforated plate 101 is fixedly connected inside the housing 1. An L-shaped partition 102 is fixedly connected to the lower end of the perforated plate 101. Multiple sets of processing components 3 are arranged on the inner side of the perforated plate 101.

[0023] Furthermore, a dust collection hopper 103 is fixedly connected to the lower end of the housing 1, and a supporting base frame 104 is fixedly connected to the lower end of the dust collection hopper 103.

[0024] Specifically, the housing 1, dust hopper 103, and supporting base 104 are all welded from carbon steel. The inner wall of the housing 1 is treated with an anti-corrosion and wear-resistant coating, which evenly covers all inner wall surfaces and can withstand the wear and slight corrosion of the rubber compound dust for a long time. The dust hopper 103 adopts an inverted square pyramid structure, which allows the collected dust to naturally converge to the bottom under gravity, facilitating dust discharge. The perforated plate 101 divides the interior of the housing 1 into an upper clean air emission area and a lower dust treatment area. The L-shaped partition 102 divides the lower dust treatment area into a right-side partition. The inlet pre-settling zone and the left-side filter cleaning zone are connected. The treatment component 3 is located in the filter cleaning zone. The perforated plate 101 serves as the installation reference for the treatment component 3. Multiple evenly distributed mounting holes are opened through its upper end. The positions of the mounting holes correspond one-to-one with the treatment component 3. The treatment components 3 are used to install the treatment components 3, ensuring that the spacing between multiple treatment components 3 is consistent and the airflow distribution is uniform. When the device is in use, the gas containing dust is guided in an orderly manner through the inlet pre-settling zone to the filter cleaning zone. After the dust-laden gas passes through the treatment component 3 in the filter cleaning zone to remove dust, it enters the clean gas emission zone for emission.

[0025] It should be noted that the lower end of the dust collection hopper 103 can be connected to ash discharge equipment such as a star-shaped discharge valve and a screw conveyor to achieve continuous automatic ash discharge.

[0026] Furthermore, a kneader end cover 2 and a three-in-one-out connecting plate 11 are provided on the right side of the housing 1. A front gas collection hood 9 is fixedly connected to the front end of the kneader end cover 2, and side gas collection hoods 10 are fixedly connected to both the left and right ends of the kneader end cover 2. The three inlets of the three-in-one-out connecting plate 11 are respectively connected to the front gas collection hood 9 and the two side gas collection hoods 10 through the collection pipe 12. The outlet of the three-in-one-out connecting plate 11 is connected to the conveying pipe 13, and the other end of the conveying pipe 13 is connected to the right end of the housing 1.

[0027] Specifically, the rear end of the kneader end cover 2 is a hinged part, which is connected to the kneader body via a pin, allowing the kneader end cover 2 to rotate freely around the pin, realizing the opening and closing operation of the kneader and meeting the needs of production processes such as feeding, sampling, and cleaning. When the kneader is working, dust mainly overflows from the front opening of the kneader end cover 2 and the gaps on the left and right sides. The front gas collection hood 9 and the two side gas collection hoods 10 form a three-sided enclosed gas collection structure. The opening edge of the gas collection hood is tightly fitted with the edge of the kneader end cover 2, which can capture the leaked dust from all directions and prevent the dust from spreading to the workshop environment. The three-in-one-out connecting plate 11 has a hollow cavity inside. The body has a disc-shaped structure. Its three inlets are connected to the front gas collection hood 9 and the two side gas collection hoods 10 through three independent collection pipes 12, and the outlet is connected to the conveying pipe 13. The three independent collection pipes 12 are used to transport the dust-laden gas collected independently from the three paths to the hollow cavity of the three-inlet-one-outlet connecting plate 11. The dust-laden gas entering the hollow cavity of the three-inlet-one-outlet connecting plate 11 is collected and transported to the box 1 through the conveying pipe 13. The setting of the three-inlet-one-outlet connecting plate 11 can balance the airflow resistance of the three gas collection paths, ensure that the negative pressure of the gas collection of the three gas collection hoods is uniform and consistent, prevent the problem of poor gas collection effect on one side, and help improve the dust collection efficiency.

[0028] Understandably, traditional air collection systems typically connect three collection pipes 12 directly into a main pipe. This method results in the collection pipes 12 closer to the main pipe having low resistance and high air volume, leading to excessively high negative pressure at the air collection hood and wasting energy. Conversely, the collection pipes 12 farther from the main pipe have high resistance and low air volume, resulting in insufficient negative pressure at the air collection hood and difficulty in effectively capturing dust, leading to poor air collection performance on one side. The three-inlet-one-outlet connecting plate 11 achieves pressure balance of the three airflows through its internal hollow cavity, ensuring that the inlet negative pressure of the three air collection hoods remains basically consistent, thereby guaranteeing that each air collection hood can achieve the best air collection effect.

[0029] Reference Figure 2 , Figure 3 and Figures 9-11 As shown, a fan 17 is fixedly installed on the right end of the housing 1. The air inlet of the fan 17 is connected to the interior of the housing 1. The connection area is located at the upper end of the perforated plate 101. The exhaust port of the fan 17 is connected to an exhaust pipe 18. The end of the exhaust pipe 18 away from the fan 17 is connected to a one-way valve 19.

[0030] Specifically, the fan 17 is a centrifugal induced draft fan driven by a variable frequency motor. The air volume can be adjusted according to the actual working conditions. It is fixedly installed on the right end of the housing 1 by a bracket. Its air inlet is connected to the clean air discharge area at the top of the housing 1 through a pipe. When running, it generates negative pressure in the clean air chamber, allowing the dust-laden gas to pass through the air collection hood and the conveying pipe 13 in sequence into the filtration and dust removal area, and then be filtered by the treatment component 3. The exhaust pipe 18 is a rigid metal pipe. One end is connected to the exhaust port of the fan 17, and the other end is connected to a one-way valve 19, which is used to discharge the filtered purified gas to the atmosphere. The one-way valve 19 is a check valve installed at the end outlet of the exhaust pipe 18. It only allows gas to be discharged from the exhaust pipe 18 to the outside in one direction, which can effectively prevent outside air from flowing back into the exhaust pipe 18 and the clean air chamber, avoid disrupting the negative pressure environment of the system, and ensure the normal working efficiency of the fan 17.

[0031] Furthermore, a guide plate 14 is fixedly connected to the lower end of the L-shaped partition 102. Multiple vertically distributed V-shaped grooves 15 are provided on the right end of the guide plate 14. An inclined plate 16 is fixedly connected to the bottom end of the guide plate 14. An air pump 20 is fixedly installed on the inner bottom end of the L-shaped partition 102. The input end of the air pump 20 is connected to the exhaust pipe 18 through the air inlet pipe 24. Multiple nozzles 23 are embedded in the inner bottom end of the L-shaped partition 102. The output end of the air pump 20 is connected to the main air supply pipe 21. The other end of the main air supply pipe 21 is connected to multiple air supply branch pipes 22. The other ends of the multiple air supply branch pipes 22 are respectively connected to the interior of multiple nozzles 23. The multiple nozzles 23 correspond one-to-one with the top of multiple V-shaped grooves 15. The jet direction is vertically downward. The inclined plate 16 is inclined towards the air inlet direction.

[0032] Specifically, the guide plate 14 is a rectangular metal plate, with its upper end fixedly connected to the lower end of the horizontal plate of the L-shaped partition 102, and its lower end fixedly connected to the inclined plate 16. It is directly opposite the outlet of the conveying pipe 13, used to block the high-speed dust-laden airflow from directly impacting the dust collector bag 306, preventing excessive wear of the dust collector bag 306 due to excessive airflow velocity, and extending the service life of the dust collector bag 306. The V-shaped groove 15 is a groove with a V-shaped cross-section. Multiple V-shaped grooves 15 are vertically and evenly opened on the right end face of the guide plate 14, used to divide the concentrated high-speed dust-laden airflow ejected from the conveying pipe 13 into multiple uniform airflows and guide them to diffuse towards the area where the treatment component 3 is located. The inclined plate 16 is a rectangular metal plate, inclined towards the air inlet direction, and is connected to the guide plate 14. The flow plate 14 forms a pre-settling channel. After the dust-laden airflow hits the inclined plate 16, the airflow direction changes drastically. Large particles and high specific gravity of the compound rubber dust are separated from the airflow under the action of inertial force and directly settle into the dust collection hopper 103, reducing the filtration load of the subsequent treatment component 3. The air pump 20 draws clean air from the exhaust pipe 18 through the air inlet pipe 24 and delivers it to each nozzle 23 through the main air supply pipe 21 and the branch air supply pipe 22. The nozzle 23 sprays airflow vertically downward, which can blow away the dust accumulated on the surface of the V-groove 15 of the flow plate 14 and the inclined plate 16, preventing the dust from accumulating and hardening on the flow plate 14 and the inclined plate 16. At the same time, it can guide the dust-laden airflow after being divided by the V-groove 15 into the area where the treatment component 3 is located, further optimizing the airflow distribution.

[0033] It should be noted that since the air pump 20 generally needs to draw gas from the external environment as its air source when it is working, but there is a certain amount of dust in the processing environment of the rubber compound, if the air pump 20 directly draws gas from the processing environment as its air source, the dust in the gas will enter the air pump 20 and the nozzle 23 with the airflow. This will cause the nozzle 23 to become clogged due to dust accumulation during long-term operation, affecting the performance of the nozzle 23. Although using air storage equipment such as air tanks as the air source for the air pump 20 can solve the above problem, the air tanks need to be replaced or refilled frequently, which not only increases the operating cost of the equipment, but also affects the continuous operating time of the device. Therefore, this solution connects the input end of the air pump 20 to the exhaust pipe 18 through the air inlet pipe 24, and uses the clean air discharged by the fan 17 as the air source. This not only avoids dust in the air source from clogging the nozzle 23, but also provides a long-term effective air supply without the need for additional air source maintenance, ensuring the stability of the nozzle 23 in the working state.

[0034] Reference Figures 3-8As shown, the processing component 3 includes a frame 301, which is fixedly installed on the inner side of the perforated plate 101. The lower end of the frame 301 is sequentially fixedly connected to a fixing post 302, a connecting seat 303, a limiting boss 304, and a stud 305. A dust collector bag 306 is sleeved on the outer side of the frame 301 and the fixing post 302. The upper end of the dust collector bag 306 is clamped and fixed by the frame 301 and the perforated plate 101. A rope groove 307 is opened on the outer surface of the fixing post 302. A tightening rope 308 is sleeved on the outer side of the dust collector bag 306 at the corresponding position of the rope groove 307, which is used to tighten and fix the lower end of the dust collector bag 306 to the fixing post 302.

[0035] Specifically, the frame 301 is made of stainless steel welded into a cage-like rigid structure. This cage structure is welded from multiple longitudinal ribs and multiple annular hoops. The longitudinal ribs are evenly distributed around the circumference, and the annular hoops are evenly distributed along the axial direction. This provides reliable support for the dust collector bag 306 without causing excessive resistance to airflow. It supports the dust collector bag 306 in maintaining its cylindrical filtration shape, preventing it from collapsing under negative pressure and ensuring effective filtration area. The surface of the frame 301 is polished, free of burrs and protrusions to prevent scratching the dust collector bag 306. The top of the frame 301 is bolted to the perforated plate 101. The upper end of the dust collector bag 306 is clamped to the perforated plate 101 via the flange of the frame 301. A sealing gasket is provided at the clamping point to prevent contamination. Dust-laden gas leaks directly from the installation gaps without filtration. The lower end is secured to the rope groove 307 of the fixing column 302 by a tightening rope 308. The groove structure of the rope groove 307 can completely embed the tightening rope 308 into the groove, preventing the tightening rope 308 from sliding upwards or downwards under the tension of the dust collector bag 306, ensuring that the lower end of the dust collector bag 306 is firmly fixed and preventing dust from entering the interior of the frame 301. When the device is in use, the negative pressure generated by the fan 17 is transmitted to the frame 301. At this time, the dust-laden gas is guided by the negative pressure and passes through the dust collector bag 306 from the outside. The dust in the gas is blocked by the dust collector bag 306 and remains on the surface of the dust collector bag 306. The clean gas with the dust removed enters the clean gas emission area and is discharged through the fan 17 and the exhaust pipe 18.

[0036] Furthermore, a Venturi tube 28 is provided above the processing component 3, and a high-pressure gas storage tank 25 is fixedly installed on the left end of the housing 1. Multiple blow pipes 26 are connected to the outside of the high-pressure gas storage tank 25. The other end of each blow pipe 26 passes through the left end of the housing 1 and is connected to the multiple Venturi tubes 28. Each Venturi tube 28 corresponds to a multiple set of processing components 3, and each blow pipe 26 is equipped with an electromagnetic pulse valve 27.

[0037] Specifically, the high-pressure air tank 25 is used to store compressed air to provide a stable high-pressure air source for pulse cleaning. The electromagnetic pulse valve 27 is controlled by an external controller to trigger at a time. When the external controller triggers the opening of the electromagnetic pulse valve 27 for cleaning, multiple electromagnetic pulse valves 27 open in a preset sequence to avoid simultaneous opening, which would cause a sudden drop in system pressure and affect the cleaning effect. After the electromagnetic pulse valve 27 is opened, compressed air is injected at high speed into the venturi tube 28 through the blowpipe 26. The venturi tube 28 can induce a large amount of surrounding air to enter the interior of the dust collector bag 306, causing the dust collector bag 306 to expand instantly from the inside to the outside, generating strong shaking, and shaking the loose dust on the surface of the dust collector bag 306 into the dust collection hopper 103.

[0038] Furthermore, a support frame 4 is provided at the lower end of the processing component 3. Multiple vibration seats 5 are fixedly connected inside the support frame 4. A limiting groove 6 is opened at the upper end of the vibration seat 5. A threaded groove 7 is opened at the bottom inner side of the limiting groove 6. An ultrasonic transducer 8 is fixedly installed at the bottom inner side of the threaded groove 7. A stud 305 is threadedly connected to the inside of the threaded groove 7. The bottom end of the stud 305 abuts against the ultrasonic transducer 8. The support frame 4 is fixedly connected to the inside of the housing 1. The support frame 4 is grid-shaped. The upper end of the support frame 4 is a downward inclined slope. Multiple sets of vibration seats 5 correspond one-to-one with multiple sets of processing components 3. The diameter of the threaded groove 7 is smaller than that of the limiting groove 6. A limiting boss 304 is inserted into the inside of the limiting groove 6 to limit the screwing depth of the stud 305.

[0039] Specifically, the support frame 4 is a grid-like rigid structure used to provide stable installation support for multiple sets of vibrating seats 5. Its upper end has a downward sloping design, which allows the shaken dust to slide smoothly into the dust collection hopper 103, preventing dust from accumulating and clogging on the support frame 4. Each vibrating seat 5 corresponds to a set of processing components 3, used to achieve independent vibration cleaning of a single bag, ensuring that each dust collector bag 306 can receive effective cleaning treatment. The stud 305 at the lower end of the frame 301 is threadedly connected to the threaded groove 7 of the vibrating seat 5. During installation, rotating the frame 301 will screw the stud 305 into the threaded groove 7 until the limiting boss 304 is fully inserted into the limiting groove 6. At this time, the bottom end of the stud 305 is in close contact with the vibration surface of the ultrasonic transducer 8, and the limiting boss 304 and the limiting groove 6 are in close contact. The combination of these components precisely limits the screw depth of the stud 305, ensuring a constant contact pressure between the ultrasonic transducer 8 and the stud 305, preventing damage to the ultrasonic transducer 8 from excessive screwing. On the other hand, it limits the circumferential rotation of the frame 301, preventing the frame 301 from shaking during filtration and causing wear on the dust collector bag 306. When the ultrasonic transducer 8 is working, the high-frequency vibration generated is directly transmitted to the entire dust collector bag 306 through the stud 305, connecting seat 303, fixing column 302 and frame 301, causing high-frequency micro-vibration on the surface of the dust collector bag 306. Under the action of vibration, the adhesive dust of the mixed rubber cannot adhere tightly to the surface of the dust collector bag 306, thus preventing the formation of a dense agglomeration layer. Combined with pulse cleaning, the dust adhering to the surface of the dust collector bag 306 can be easily removed.

[0040] It should be noted that the ultrasonic transducer 8 is a piezoelectric ceramic ultrasonic transducer. The piezoelectric ceramic ultrasonic transducer works by utilizing the inverse piezoelectric effect of piezoelectric ceramics. When an alternating voltage is applied to the piezoelectric ceramic sheet, the piezoelectric ceramic sheet will generate mechanical vibration, thereby generating ultrasonic waves. The vibration frequency and power of the ultrasonic transducer 8 are determined according to the size of the dust collector bag 306 and the characteristics of the dust, which can generate sufficient vibration intensity to effectively prevent dust caking. Ultrasonic vibration cleaning and pulse cleaning are performed in sequence. The specific sequence can be set by an external controller. When the device cleans the dust, the ultrasonic transducer 8 is first started to generate high-frequency micro-amplitude vibration on the surface of the dust collector bag 306, shaking off some loose dust and loosening the stubborn dust on the surface of the dust collector bag 306. Then, the electromagnetic pulse valve 27 is opened in sequence, and compressed air is injected at high speed into the venturi tube 28 through the blow pipe 26, causing the dust collector bag 306 to expand instantly from the inside to the outside, generating strong shaking, which further shakes off the loosened stubborn dust.

[0041] Working principle: When the kneader is working, the mixed rubber dust overflowing from the front opening and the gaps on the left and right sides is captured from all directions by the front gas collection hood 9 and the two side gas collection hoods 10 on the kneader end cover 2. The three dust-laden gases flow into the hollow cavity of the three-inlet-one-outlet connecting plate 11 through independent collection pipes 12. The three-inlet-one-outlet connecting plate 11 balances the airflow resistance of the three gas collection paths, ensuring that the negative pressure of the gas collection hoods is uniform. The balanced dust-laden gas is then uniformly transported to the filtration and dust removal area inside the housing 1 through the conveying pipe 13. After entering the housing 1, the dust-laden airflow first impacts the guide plate 14 facing the outlet of the conveying pipe 13, preventing the high-speed airflow from directly impacting the dust collector bag 306 and causing excessive local wear. The V-shaped grooves 15 vertically distributed on the right end of the guide plate 14 concentrate the high-speed airflow. The airflow is divided into multiple uniform airflows, which are guided to diffuse towards the area where the processing component 3 is located. The airflow continues to impact the inclined plate 16 tilted towards the air inlet direction, causing a sharp change in airflow direction. Large particles and high specific gravity of the compounded rubber dust separate from the airflow under the action of inertial force and directly settle into the dust collection hopper 103, reducing the load on subsequent filtration. Simultaneously, the air pump 20 draws filtered clean air from the exhaust pipe 18 through the air inlet pipe 24 as the air source, and delivers it to each nozzle 23 through the main air supply pipe 21 and the branch air supply pipes 22. The nozzles 23 spray airflow vertically downwards, continuously blowing the V-shaped groove 15 of the guide plate 14 and the surface of the inclined plate 16 to prevent sticky dust from accumulating and hardening on the guide plate 14 and the inclined plate 16. At the same time, it guides the uniformly distributed dust-laden airflow to smoothly enter the filtration zone. The dust-laden airflow rises and passes through the dust collector bags 306 of the multiple processing components 3. The sticky, mixed dust in the gas is trapped on the outer surface of the dust collector bags 306. The clean gas, free of dust, passes through the dust collector bags 306 and enters the interior of the frame 301. It then rises through the mounting holes of the perforated plate 101 to the clean gas discharge area. The clean gas is drawn in through the inlet of the fan 17 and delivered to the one-way valve 19 at the end through the exhaust pipe 18. The one-way valve 19 only allows the gas to be discharged to the atmosphere in one direction, preventing backflow of outside air and disruption of the system's negative pressure environment, thus completing the filtration and purification process. After the device has been running for a period of time, the dust accumulation on the surface of the dust collector bags 306 becomes thicker. At this time, the controller triggers the dust removal program, and the ultrasonic transducers 8 in all the vibrating seats 5 start synchronously. The generated high-frequency vibration is transmitted through a tight... The contacting studs 305, connecting seats 303, and fixing columns 302 transmit the vibrations to the entire cage frame 301, causing the surface of the dust collector bag 306 to vibrate at high frequency and amplitude. Under the vibration, the sticky dust of the compounded rubber cannot adhere tightly, and the originally dense dust layer is loosened and dispersed, preventing the formation of a caking layer. At the same time, some loose dust is shaken off. After the ultrasonic transducer 8 runs for a set time, it shuts off. The controller sequentially opens the electromagnetic pulse valves 27 on each blowpipe 26. Compressed air in the high-pressure air tank 25 is injected at high speed into the corresponding venturi tubes 28 through the blowpipes 26. The venturi tubes 28 induce a large amount of surrounding air to rush into the dust collector bag 306, causing the dust collector bag 306 to expand instantly from the inside out, generating strong vibrations that completely shake off the stubborn sticky dust loosened by the ultrasonic waves.The shaken-off dust falls onto the grid-shaped support frame 4, and is guided by the downward-sloping surface at the top of the support frame 4 to smoothly slide into the dust collection hopper 103, completing one full cleaning cycle. After cleaning, all electromagnetic pulse valves 27 are closed, the device automatically returns to the filtration state, and then repeats the cleaning process according to the preset cycle.

[0042] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. A dust collection and treatment device for compound rubber processing that can prevent filter bag caking, characterized in that, include: Box (1), with a perforated plate (101) fixedly connected inside the box (1), and an L-shaped partition (102) fixedly connected to the lower end of the perforated plate (101). Processing components (3), multiple sets of the processing components (3) are all disposed on the inner side of the perforated plate (101); The processing component (3) includes: The frame (301) is fixedly installed on the inner side of the perforated plate (101). The lower end of the frame (301) is sequentially fixedly connected to a fixing post (302), a connecting seat (303), a limiting boss (304), and a stud (305). Dust collector bag (306) is fitted onto the outside of frame (301) and fixing column (302); A support frame (4) is disposed at the lower end of the processing component (3); The vibration seat (5) is fixedly connected to the inside of the support frame (4); A limiting groove (6) is provided at the upper end of the vibration seat (5); The threaded groove (7) is opened at the bottom inner side of the limiting groove (6); An ultrasonic transducer (8) is fixedly installed on the inner bottom end of a threaded groove (7). The stud (305) is threadedly connected to the inside of the threaded groove (7), and the bottom end of the stud (305) abuts against the ultrasonic transducer (8). The guide plate (14) is fixedly connected to the lower end of the L-shaped baffle (102), and the right end of the guide plate (14) is provided with multiple vertically distributed V-shaped grooves (15). Inclined plate (16) is fixedly connected to the bottom end of guide plate (14); The fan (17) is fixedly installed at the right end of the housing (1); The exhaust pipe (18) is connected at one end to the exhaust port of the fan (17); An air pump (20) is fixedly installed on the inner bottom of an L-shaped partition (102). The input end of the air pump (20) is connected to the exhaust pipe (18) through an air inlet pipe (24). Nozzles (23), a plurality of the nozzles (23) are embedded in the inner bottom end of the L-shaped partition (102); A venturi tube (28) is positioned above the processing component (3).

2. The dust collection and treatment device for compound rubber processing capable of preventing filter bag caking according to claim 1, characterized in that: The right side of the box (1) is provided with a kneader end cover (2) and a three-in-one-out connecting plate (11). The front end of the kneader end cover (2) is fixedly connected to a front gas collection hood (9). The left and right ends of the kneader end cover (2) are fixedly connected to side gas collection hoods (10). The three inlets of the three-in-one-out connecting plate (11) are respectively connected to the front gas collection hood (9) and the two side gas collection hoods (10) through a collection pipe (12). The outlet of the three-in-one-out connecting plate (11) is connected to a conveying pipe (13). The other end of the conveying pipe (13) is connected to the right end of the box (1).

3. The dust collection and treatment device for compound rubber processing that can prevent filter bag caking according to claim 1, characterized in that: The upper end of the dust collector bag (306) is clamped and fixed by the frame (301) and the perforated plate (101). The outer surface of the fixing post (302) is provided with a rope groove (307). A tightening rope (308) is sleeved on the outer side of the dust collector bag (306) at the corresponding position of the rope groove (307) to tighten and fix the lower end of the dust collector bag (306) to the fixing post (302).

4. The dust collection and treatment device for compound rubber processing that can prevent filter bag caking according to claim 1, characterized in that: The support frame (4) is fixedly connected to the inside of the box (1). The support frame (4) is grid-shaped, and the upper end of the support frame (4) is a downward inclined surface.

5. A dust collection and treatment device for compound rubber processing that can prevent filter bag caking according to claim 1, characterized in that: The multiple sets of vibration seats (5) correspond one-to-one with the multiple sets of processing components (3). The diameter of the threaded groove (7) is smaller than that of the limiting groove (6). The limiting boss (304) is inserted into the inside of the limiting groove (6) to limit the screw depth of the stud (305).

6. A dust collection and treatment device for compound rubber processing that can prevent filter bag caking according to claim 1, characterized in that: The air inlet of the fan (17) is connected to the interior of the housing (1), and the connection area is located at the upper end of the perforated plate (101). The end of the exhaust pipe (18) away from the fan (17) is connected to a one-way valve (19).

7. A dust collection and treatment device for compound rubber processing that can prevent filter bag caking according to claim 1, characterized in that: The output end of the air pump (20) is connected to the main air supply pipe (21), and the other end of the main air supply pipe (21) is connected to multiple air supply branch pipes (22). The other ends of the multiple air supply branch pipes (22) are respectively connected to the interior of multiple nozzles (23).

8. A dust collection and treatment device for compound rubber processing that can prevent filter bag caking according to claim 1, characterized in that: The tops of the multiple nozzles (23) correspond one-to-one with the tops of the multiple V-shaped grooves (15), the jet direction is vertically downward, and the inclined plate (16) is inclined towards the air intake direction.

9. A dust collection and treatment device for compound rubber processing that can prevent filter bag caking according to claim 1, characterized in that: A high-pressure gas storage tank (25) is fixedly installed on the left end of the box (1). Multiple blow pipes (26) are connected to the outside of the high-pressure gas storage tank (25). The other end of each blow pipe (26) passes through the left end of the box (1) and is connected to multiple Venturi tubes (28). Each Venturi tube (28) corresponds to a set of processing components (3). Each blow pipe (26) is equipped with an electromagnetic pulse valve (27).

10. A dust collection and treatment device for compound rubber processing capable of preventing filter bag caking according to claim 1, characterized in that: The lower end of the box (1) is fixedly connected to a dust collection hopper (103), and the lower end of the dust collection hopper (103) is fixedly connected to a support frame (104).

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