Workshop dust falling device for barite powder production

Abstract

The application discloses a workshop dust falling device for barite powder production and relates to the technical field of workshop dust falling devices.The device comprises a dust removal cylinder and a fiber filter bag.The dust removal cylinder is connected with an air guide fan through an air inlet pipe.The dust removal cylinder is connected with a conductive sheet through an insulating ring.The conductive sheet is connected with a conductive rod through a conductive ring.The conductive rod and the conductive ring are attached to the inner wall of the fiber filter bag.The outer side of the fiber filter bag is sleeved with a first vibration ring and a second vibration ring.The first vibration ring and the second vibration ring are connected with a vibration motor through a vibration transmission rod.The device is provided with the dust removal cylinder, the fiber filter bag, the conductive rod, the conductive ring and the vibration ring, realizes efficient dry dust falling and barite powder recovery, separates large-particle barite powder through centrifugal separation of the dust removal cylinder, adsorbs small barite powder through electrostatic adsorption of the fiber filter bag, prevents blockage through high-frequency dust removal of the vibration ring, improves the air quality of the workshop and reduces the operation and maintenance cost.

Description

Technical Field

[0001] This invention relates to the field of workshop dust suppression devices, specifically a workshop dust suppression device for barite powder production. Background Technology

[0002] Barite powder is an important industrial mineral raw material, widely used in oil drilling, chemical and pharmaceutical fields. During the production of barite powder, crushing, grinding, screening and packaging processes generate a large amount of dust. These dust particles are small and have a large specific surface area. When suspended in the workshop air for a long time, they not only seriously pollute the working environment and endanger the respiratory health of operators, but also waste valuable mineral raw materials and increase the production cost of enterprises. Currently, the most common dust suppression method in barite powder production workshops is spray dust suppression. Spray dust suppression involves atomizing water from nozzles and spraying it into the air. The water mist collides and agglomerates with the dust particles, causing the dust to become heavier and settle. However, spray dust suppression consumes a lot of water, and the large amount of dust-laden wastewater generated requires supporting sedimentation tanks and treatment facilities, increasing operating costs and environmental pressure. At the same time, the dust after spraying easily forms sludge and clumps on the surface of the equipment, which is difficult to clean and affects the hygiene of the workshop. Moreover, for extremely fine dust particles, the capture efficiency of water mist is low, and some dust will remain suspended for a long time, making it difficult to achieve the ideal dust suppression effect.

[0003] Patent CN116351186B discloses a dust suppression component and a dust suppression device for production workshops. The above patent enables centralized dust suppression in areas with a large amount of dust.

[0004] The aforementioned patent includes a device body, which includes a housing with an installation cavity inside. The side walls at both ends of the housing have a fourth sliding groove along the height direction of the housing. The upper end of the support plate is recessed inward to form a storage slot for the water tank. It can reduce dust in areas with a lot of dust, reduce the time required for dust reduction, and improve the efficiency of dust reduction. However, there is still room for optimization in the collection of fine dust.

[0005] Therefore, this application proposes a dust suppression device for production workshops that can efficiently separate and recover barite powder. Summary of the Invention

[0006] The purpose of this invention is to provide a dust suppression device for barite powder production workshops, in order to solve the technical problem mentioned in the background art that the dust after spraying in existing spray dust removal devices easily forms mud and clumps on the device surface, and has low collection efficiency for extremely small fine dust particles.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a dust removal device for a barite powder production workshop, comprising a dust collector and a fiber filter bag. The dust collector is connected to an air inlet pipe, which is connected to an induced draft fan via an air inlet to deliver dust-laden air tangentially into the dust collector to generate centrifugal force for separation. The dust collector is connected to a conductive sheet via an insulating ring. The conductive sheet is connected to an electrostatic generator via a third connecting line. The conductive sheet is connected to a conductive ring at the bottom via a longitudinally extending conductive rod. The conductive rod and conductive ring are in contact with the inner wall of the fiber filter bag to form an internal conductive skeleton for uniformly conducting static electricity and supporting the fiber filter bag. The fiber filter bag is disposed in the exhaust port of the dust collector and is connected to the conductive sheet via a connecting piece. At least two vibration rings are axially spaced around the outside of the fiber filter bag, including a first vibration ring and a second vibration ring. The first and second vibration rings are connected to a vibration motor via a vibration transmission rod. The vibration motor is used to generate high-frequency vibration to clean the barite powder accumulated on the surface of the fiber filter bag.

[0008] Preferably, the upper end of the dust collector is a cylindrical structure, and the lower end of the dust collector is a conical structure that is wider at the top and narrower at the bottom. A collection pipe is connected to the bottom end of the dust collector. A circular groove is provided at the top of the outer wall of the dust collector. An exhaust port is provided at the bottom of the inner wall of the circular groove. The exhaust port is connected to the internal space of the dust collector. A first connecting hole is provided at the bottom of the inner wall of the circular groove. The side of the inner wall of the circular groove is fitted with the side of the outer wall of the insulating ring. The inner wall of the insulating ring is fitted with the outer wall of the connecting piece.

[0009] Preferably, the top of the outer wall of the connecting piece is provided with a second connecting hole, which is concentrically aligned with the first connecting hole. The bottom of the outer wall of the connecting piece is in contact with the bottom of the inner wall of the circular groove. A fiber filter bag is connected to the bottom of the outer wall of the connecting piece. The fiber filter bag has a gradient of pore size and fiber diameter. The fiber filter bag is placed in the exhaust port and extends from the exhaust port into the interior of the dust collector.

[0010] Preferably, the top end of the outer wall of the bonding piece and the bottom end of the outer wall of the conductive piece are attached to each other. The top end of the outer wall of the conductive piece is provided with a third connecting hole. The third connecting hole and the second connecting hole of the bonding piece are concentrically aligned. The bolt passes through the third connecting hole, the second connecting hole and the first connecting hole to fix the conductive piece and the bonding piece on the dust collector. The side of the outer wall of the conductive piece is fitted with the side of the inner wall of the insulating ring.

[0011] Preferably, a conductive rod is connected to the bottom of the outer wall of the conductive sheet, and a conductive ring is provided at the bottom of the outer wall of the conductive rod. The outer side of the conductive rod and the conductive ring are in contact with the inner side of the fiber filter bag. The bottom of the outer wall of the conductive ring is in contact with the bottom of the inner wall of the fiber filter bag. The conductive sheet is connected to one end of the third connecting line, and the other end of the third connecting line is connected to the electrostatic generator. The electrostatic generator is located at the top of the outer wall of the dust collector.

[0012] Preferably, the top of the outer wall of the dust collector cylinder is provided with a rectangular groove, the bottom of the inner wall of the rectangular groove is provided with a through hole, the inner wall of the rectangular groove is fitted with the outer wall of the rubber cylinder, the bottom of the inner wall of the rubber cylinder is provided with a round hole, the round hole and the through hole of the rectangular groove are concentrically aligned, the vibration motor is installed in the rubber cylinder, and the inner wall of the rubber cylinder and the outer wall of the vibration motor are fitted with each other.

[0013] Preferably, a vibration transmission rod is provided at the bottom of the outer wall of the vibration motor. The vibration transmission rod extends through the round hole and the through hole of the rectangular groove of the rubber cylinder into the internal space of the dust collector. A first connecting plate and a second connecting plate are provided on the side of the outer wall of the vibration transmission rod. The first connecting plate is connected to the first vibration ring, and the second connecting plate is connected to the second vibration ring. The first vibration ring and the second vibration ring are fitted on the outside of the fiber filter bag, and the inner walls of the first vibration ring and the second vibration ring are in contact with the outer wall of the fiber filter bag.

[0014] Preferably, the inner wall of the dust collector is provided with an air outlet, which is connected to the air inlet pipe. An induced draft fan is provided at the air inlet of the air inlet pipe, and the air inlet pipe is connected to the air outlet along the tangential direction of the outer wall of the dust collector.

[0015] Preferably, the outer wall of the induced draft fan and the inner wall of the air inlet pipe are fitted together. A support rod is provided on the inner wall of the induced draft fan. A servo motor is provided at the rear end of the outer wall of the support rod. A rotating shaft is provided at the front end of the outer wall of the servo motor. The rotating shaft passes through the support rod and is connected to the connecting cylinder. An impeller is provided on the side of the outer wall of the connecting cylinder. A first connecting line is provided on the outer wall of the servo motor. The servo motor is connected to an external control console through the first connecting line. The control console is connected to a vibration motor through a second connecting line.

[0016] Preferably, the dust suppression method includes the following steps: S1. The air containing barite powder is sent into the dust collector tangentially by the induced draft fan, so that the large particles of barite powder are separated and settled and recovered under the action of centrifugal force. S2. During centrifugal pre-separation, the conductive rods and conductive rings on the inner wall of the fiber filter bag at the exhaust port are charged with static electricity by an electrostatic generator, thereby forming an electrostatic field on the surface of the fiber filter bag, which adsorbs the ultrafine barite powder particles that escape with the internal swirling upward airflow onto the outer surface of the fiber filter bag. S3. When the device is running continuously and the electrostatic generator is not turned off, the control panel starts the vibration motor at a set time interval. The vibration motor drives the first and second vibration rings on the outside of the fiber filter bag to generate high-frequency vibration through the vibration transmission rod, shaking off and recycling the barite powder agglomerates adsorbed on the surface of the fiber filter bag. S4. When the device is shut down, first turn off the induced draft fan and electrostatic generator, then start the vibration motor to perform forced dust removal and restore the initial filtration performance of the fiber filter bags.

[0017] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention, by incorporating a dust collector, exhaust port, collection pipe, air inlet pipe, and induced draft fan, achieves centrifugal separation and recovery of large-particle barite powder from dusty air. It solves the problems of large-particle dust easily forming sludge and clumps on the device surface, high water consumption, and high wastewater treatment costs associated with spray dust suppression methods. This invention utilizes the air inlet pipe to introduce dusty air tangentially into the dust collector, creating a spiral downward airflow within the collector. Large-particle barite powder is thrown against the collector wall by centrifugal force and falls along the wall, ultimately being collected in the collection pipe. This achieves dry physical separation, avoiding clump formation and wastewater discharge, enabling efficient recovery of barite powder, reducing raw material waste, lowering device maintenance frequency and operating costs, and improving workshop hygiene. 2. This invention, by incorporating a dust collector cylinder, a connecting plate, and a fiber filter bag, achieves deep filtration of medium-sized barite powder remaining after centrifugal separation. It solves the problem that centrifugal separation structures cannot effectively capture smaller barite powder particles and those escaping with the rising internal airflow. The fiber filter bag is positioned at the exhaust port, allowing the dust-laden airflow to fully contact the outer surface of the filter bag during its ascent. The fiber filter bag, composed of a pre-filtration layer, a support layer, and an adsorption layer, can capture fine barite powder particles through inertial collision and interception. The connecting plate securely connects the fiber filter bag to the dust collector cylinder, ensuring uniform airflow across the filter bag surface. This achieves secondary interception of medium-sized barite powder, improving overall dust removal efficiency, preventing fine particulate matter from being directly discharged into the workshop air, and protecting the respiratory health of operators. 3. This invention, by incorporating a fiber filter bag, conductive sheet, conductive rod, conductive ring, and electrostatic generator, achieves electrostatic adsorption and capture of fine barite powder particles. This solves the problem of insufficient filtration efficiency caused by relying solely on physical interception, which is insufficient for capturing extremely fine barite powder particles. The invention uses an electrostatic generator to conduct high-voltage static current through the conductive sheet, conductive rod, and conductive ring to the inner wall of the fiber filter bag, causing the adsorption layer surface to carry a static charge. When ultrafine barite powder particles approach the surface of the fiber filter bag with the airflow, they are adsorbed onto the outer surface of the fiber filter bag by electrostatic attraction, while clean air is smoothly discharged through the fiber filter bag. This improves the removal rate of fine barite powder, enhances the quality of air purification in the workshop, and reduces occupational exposure risks. 4. This invention, by incorporating a vibration motor, a transmission rod, a first vibration ring, and a second vibration ring, achieves high-frequency vibration cleaning of barite powder accumulated on the surface of fiber filter bags. This solves the problem of long-term accumulation of electrostatically adsorbed barite powder on the surface of fiber filter bags, leading to increased filtration resistance, filter bag blockage, and difficulty in cleaning. The invention uses a control console to start the vibration motor at set time intervals, generating high-frequency vibration. This high-frequency vibration is transmitted to the first and second vibration rings through the transmission rod. The vibration rings are in close contact with the outer wall of the fiber filter bag, causing the accumulated barite powder agglomerates to shake off and fall into the collection pipe. Forced cleaning is performed when the machine stops, restoring the filter bag's initial performance. This achieves a self-cleaning function for the fiber filter bag, extends its service life, ensures the long-term stable operation of the dust removal device, improves the recovery rate of barite powder, and reduces the labor intensity of manual cleaning. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the structure of the fiber filter bag being pulled out of the dust collector cylinder according to the present invention; Figure 3 This is a schematic diagram of the internal structure of the dust collector cylinder of the present invention; Figure 4 This is a schematic diagram of the structure of the insulating ring and rubber sleeve of the present invention being pulled out from the dust collector cylinder; Figure 5 This is a schematic diagram of the connection structure between the first vibration ring and the fiber filter bag of the present invention; Figure 6 This is a schematic diagram of the connection structure between the vibration transmission rod and the first vibration coil of the present invention; Figure 7 This is a schematic diagram of the conductive sheet being pulled out from the bonding sheet according to the present invention; Figure 8 This is a schematic diagram of the conductive rod and conductive coil structure of the present invention; Figure 9 This is a schematic diagram of the structure of the induced draft fan of the present invention being pulled out of the dust collector cylinder; Figure 10 This is a schematic diagram of the connecting cylinder being pulled out from the rotating shaft according to the present invention; Figure 11 This is a schematic cross-sectional view of the dust collector cylinder of the present invention.

[0019] In the diagram: 1. Dust collector cylinder; 2. Circular trough; 3. Exhaust port; 4. First connecting hole; 5. Collection pipe; 6. Electrostatic generator; 7. Rectangular trough; 8. Through hole; 9. Air inlet pipe; 10. Air inlet; 11. Exhaust fan; 12. Support rod; 13. Servo motor; 14. Rotating shaft; 15. Connecting cylinder; 16. Impeller; 17. Insulating ring; 18. Rubber cylinder; 19. Connecting plate; 20. Second connecting hole; 21. Fiber filter bag; 22. Conductive sheet; 23. Third connecting hole; 24. Conductive rod; 25. Conductive ring; 26. Vibration motor; 27. Vibration transmission rod; 28. First connecting plate; 29. ​​First vibration ring; 30. Second connecting plate; 31. Second vibration ring; 32. Bolt. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., 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 for simplifying the description, and do not 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. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0023] Please see Figure 1 , Figure 9 , Figure 10 and Figure 11An embodiment of the present invention provides a dust suppression device for a barite powder production workshop. The dust collection cylinder 1 has an air outlet on its inner wall, which is connected to the air inlet pipe 9. An induced draft fan 11 is provided at the air inlet 10 of the air inlet pipe 9. The air inlet pipe 9 is connected to the air outlet along the tangent direction of the outer wall of the dust collection cylinder 1. A support rod 12 is provided on the inner wall of the induced draft fan 11. A servo motor 13 is provided at the rear end of the outer wall of the support rod 12. The servo motor 13 is connected to the connecting cylinder 15 through a rotating shaft 14. An impeller 16 is provided on the side of the outer wall of the connecting cylinder 15. Furthermore, when the device is started, the control console sends a start command to the servo motor 13 via the first connection line. Upon receiving the command, the servo motor 13 begins to operate. The output shaft of the servo motor 13 drives the rotating shaft 14 to rotate clockwise. The rotating shaft 14 transmits the rotational torque of the servo motor 13 to the connecting cylinder 15, causing the connecting cylinder 15 to rotate clockwise synchronously. An impeller 16 is provided on the outer wall side of the connecting cylinder 15, and the impeller 16 also rotates clockwise at high speed. During the high-speed rotation, the impeller 16 exerts a pushing effect on the surrounding air, forming a negative pressure area at the air inlet 10, thereby generating a continuous... Stable suction draws outside air into the air inlet duct 9. Air containing barite powder particles enters the air inlet duct 9 through the air inlet 10 under negative pressure. The air inlet duct 9 is an airflow delivery channel. The inner wall of the air inlet duct 9 is smooth and well-sealed, which can minimize airflow resistance and prevent barite powder from depositing on the inner wall of the pipe. The air inlet duct 9 delivers the dust-laden air to the air outlet and discharges the air into the internal space of the dust collector 1 through the air outlet, providing a stable airflow source for subsequent centrifugal separation and filtration treatment, while preventing the leakage of dust-laden air during transportation and preventing secondary pollution. The air inlet duct 9 is positioned tangentially to the inner wall of the dust collector 1. When the air inlet duct 9 discharges dust-laden air into the dust collector 1 at high speed, because the airflow direction is tangential to the inner wall of the dust collector 1, the airflow will not directly impact the center of the dust collector 1's wall. Instead, it will form a strong rotational motion along the inner side of the wall. The air spirals downwards clockwise along the inner side of the dust collector 1, creating an airflow vortex field inside the dust collector 1. This process utilizes the principle of centrifugal force to perform preliminary solid-gas separation of the dust-laden air. The principle of centrifugal force is that when the dust-laden air enters the cylinder at high speed tangentially, the airflow... The wall rotates in a spiral motion. Due to their large mass, the large barite powder particles are thrown towards the wall under the action of centrifugal force. After colliding with the wall, the large barite powder particles lose kinetic energy and spiral down along the wall with the external airflow, eventually falling into the collection pipe 5 at the bottom of the dust collector 1. The collection pipe 5 is connected to the external recycling box, which is used to collect barite powder particles. The large barite powder particles in the air are separated and recycled by physical centrifugal force, which not only reduces the filtration burden of the subsequent fiber filter bag 21, but also improves the recycling rate of barite powder and reduces raw material loss. As the air spirals downwards along the inner wall of the dust collector cylinder 1, an internal swirling upward airflow is simultaneously generated inside the dust collector cylinder 1. The principle behind the formation of this internal swirling upward airflow is that when the external swirling airflow (spiraling downwards clockwise) reaches the bottom of the conical structure at the lower end of the dust collector cylinder 1, the airflow is constrained and guided by the conical wall, forcing its flow direction to reverse. Due to the lower pressure in the central region of the dust collector cylinder 1, the airflow converges from the outer edge to the center and moves upwards along the central axis of the cylinder, thus forming an internal swirling airflow opposite to the external spiral direction, resulting in a counter-clockwise upward airflow. This internal swirling upward airflow will undergo preliminary separation... After separation, the relatively clean air (containing only very small light dust particles) is blown upwards, allowing the air to come into contact with the fiber filter bag 21. This achieves directional airflow and secondary dust classification. The upward airflow velocity prevents larger particles from being blown up due to gravity exceeding the carrying capacity of the upward airflow, causing them to settle into the collection pipe 5. Meanwhile, the very small particles continue to move with the upward airflow and enter the fiber filter bag 21 area for filtration. This avoids the problem of large and small particles mixing and entering the fiber filter bag 21, which would cause the filter bag to clog rapidly, thus improving the operational stability and filtration efficiency of the dust removal device.

[0024] Please see Figure 3 , Figure 4 , Figure 5 and Figure 7 An embodiment of the present invention provides a dust suppression device for a barite powder production workshop, wherein a fiber filter bag 21 is connected to the bottom of the outer wall of the connecting piece 19, the fiber filter bag 21 is disposed in the exhaust port 3, the fiber filter bag 21 extends from the exhaust port 3 into the interior of the dust collection cylinder 1, the outer side of the conductive rod 24 and the conductive ring 25 are in contact with the inner side of the fiber filter bag 21, and the bottom of the outer wall of the conductive ring 25 is in contact with the bottom of the inner wall of the fiber filter bag 21; Furthermore, the air, after initial centrifugal separation by the dust collector 1, moves upward with the internal swirling airflow and comes into uniform contact with the outer surface of the fiber filter bag 21. The fiber filter bag 21 is composed of a three-layer composite structure, with each layer tightly connected by a hot-melt bonding process. The first layer is a pre-filtration layer made of polypropylene meltblown fiber material, with the fiber diameter controlled between 20 and 50 micrometers, a porosity of 85%, and an average pore size of 50 micrometers. In the initial stage of air entering the fiber filter bag 21, the pre-filtration layer captures relatively large fine barite powder particles (particle size greater than 50 micrometers) through inertial collision and direct interception. If larger barite powder particles directly enter the deep layers of the fiber filter bag 21, they will quickly block the internal pores, causing the filtration resistance to rise sharply. The pre-filtration layer can play a buffering and protective role. The second layer of the fiber filter bag 21 is a support layer, which is made of non-woven fabric with a fiber diameter of 15 micrometers, a porosity of 90%, and an average pore size of 20 micrometers. The support layer has high mechanical strength and tensile strength, providing physical support for the pre-filtration layer and adsorption layer, preventing the fiber filter bag 21 from deforming, collapsing, or breaking under the continuous impact of the internal swirling rising airflow, and ensuring that the fiber filter bag 21 always maintains a cylindrical unfolded shape, thereby maintaining a uniform filtration area. The support layer further captures medium-sized particles (particle size range of 20 to 50 micrometers) that pass through the pre-filtration layer through diffusion and interception. The high porosity of the support layer ensures that the airflow can pass smoothly and avoids generating excessive flow resistance. The third layer of the fiber filter bag 21 is an adsorption layer, which is made of conductive carbon fiber and polypropylene fiber composite. The fiber diameter is 1 micrometer, the porosity is 70%, and the average pore size is 5 micrometers. The adsorption layer has good conductivity and can be tightly attached to the conductive rod 24 and the conductive ring 25, thereby receiving the high voltage static charge from the electrostatic generator 6. Through the static charge on the surface, the adsorption layer generates a strong electrostatic adsorption force on the barite powder particles with opposite polarity or polarity in the air. Under the action of electrostatic adsorption, the barite powder particles are captured on the outer surface of the adsorption layer and cannot penetrate the fiber filter bag 21.

[0025] Please see Figure 3 , Figure 4 , Figure 5 and Figure 7 An embodiment of the present invention provides a dust suppression device for a barite powder production workshop, wherein a fiber filter bag 21 is connected to the bottom of the outer wall of the connecting piece 19, the fiber filter bag 21 is disposed in the exhaust port 3, the fiber filter bag 21 extends from the exhaust port 3 into the interior of the dust collection cylinder 1, the outer side of the conductive rod 24 and the conductive ring 25 are in contact with the inner side of the fiber filter bag 21, and the bottom of the outer wall of the conductive ring 25 is in contact with the bottom of the inner wall of the fiber filter bag 21; The fiber filter bag 21 has a gradient of pore size and fiber diameter from the outside to the inside in the radial direction. The pre-filtration layer, support layer and adsorption layer of the fiber filter bag 21 all adopt a gradient pore structure. The outermost pre-filtration layer of the fiber filter bag 21 is made of coarse fiber material with a large fiber diameter, usually between 20 and 50 micrometers. The resulting pore size is also correspondingly large, with an average pore size of 50 to 100 micrometers. The large pore structure on the outside of the pre-filtration layer is used to trap relatively large barite powder particles (e.g., particles with a diameter greater than 10 micrometers) carried in the airflow. Due to the large pore size, dust is not easy to form a dense dust cake quickly on the surface, but is captured in the deep layer of the fiber or in the gaps on the surface, thereby reducing the formation rate of the surface dust cake, extending the continuous filtration time of the fiber filter bag 21, reducing the frequency of vibration cleaning, and also reducing the initial resistance of the airflow through the fiber filter bag 21, saving the energy consumption of the induced draft fan 11. The outer side of the support layer is closely attached to the inner side of the pre-filter layer. The fiber diameter of the support layer is finer than that of the pre-filter layer, ranging from 5 to 15 micrometers, and the pore size is from 10 to 30 micrometers. The support layer not only provides structural support to prevent the inner adsorption layer from being damaged by airflow impact, but also further captures medium-sized dust particles that penetrate through the pre-filter layer through its gradient pore structure. The small pore size on the inner side of the pre-filter layer is the same as the large pore size on the outer side of the support layer. When the innermost pore size of the pre-filter layer is 30 micrometers, the outermost pore size of the support layer is also 30 micrometers. This ensures that there is no abrupt resistance gradient when the airflow transitions between the two layers, avoiding a decrease in filtration efficiency caused by local airflow acceleration or turbulence. At the same time, it is conducive to the uniform distribution of dust at the interface between the two layers and prevents local blockage. The adsorption layer is located inside the support layer. The fiber diameter of the adsorption layer is 1 to 5 micrometers, and the pore size is 1 to 10 micrometers. The pore size on the outer side of the adsorption layer is the same as that on the inner side of the support layer. When the innermost pore size of the support layer is 10 micrometers, the outermost pore size of the adsorption layer is also 10 micrometers. The smooth transition allows the airflow to enter the adsorption layer evenly, avoiding the generation of local high wind speed zones due to abrupt changes in pore size. This ensures the efficient capture of submicron dust (particle size less than 1 micrometer) by electrostatic adsorption. At the same time, the pore size on the inner side of the adsorption layer (i.e., the side closest to the inner cavity of the filter bag) is even smaller, at 1 micrometer, which can effectively block the penetration of extremely fine dust and ensure that the air discharged from the exhaust port 3 meets the high cleanliness standard. By gradually decreasing fiber diameter and pore size from the outside to the inside of the fiber filter bag 21, a complete gradient-level collection path is formed. The outer layer intercepts large particles, the middle layer captures medium-sized particles, and the inner layer adsorbs fine and submicron particles. This allows dust to be captured in layers, preventing all dust from accumulating on the surface to form a dense dust cake. This reduces the rate of increase in filtration resistance and extends the effective working time of the fiber filter bag 21. At the same time, the gradient structure makes it easier for dust to fall off layer by layer from the outside to the inside during cleaning, resulting in higher vibration cleaning efficiency. Because the pores of each layer are matched, the airflow distribution is more uniform, effectively extending the overall service life of the fiber filter bag 21, reducing maintenance costs, and improving the overall filtration performance and operational economy of the dust suppression device in the barite powder production workshop.

[0026] Please see Figure 2 , Figure 3 , Figure 7 , Figure 8 and Figure 9An embodiment of the present invention provides a dust removal device for a barite powder production workshop. The top of the outer wall of the dust removal cylinder 1 is provided with a circular groove 2, and the bottom of the inner wall of the circular groove 2 is provided with an exhaust port 3. The exhaust port 3 is connected to the internal space of the dust removal cylinder 1. The bottom of the inner wall of the circular groove 2 is provided with a first connecting hole 4. The top of the outer wall of the connecting piece 19 is provided with a second connecting hole 20, and the top of the outer wall of the conductive piece 22 is provided with a third connecting hole 23. The bolt 32 passes through the third connecting hole 23, the second connecting hole 20 and the first connecting hole 4 to fix the conductive piece 22 and the connecting piece 19 on the dust removal cylinder 1. Furthermore, after initial centrifugal filtration by the dust collector 1, the air continues to move in the upward spiral direction and fully contacts the outer surface of the fiber filter bag 21. Simultaneously with the device startup, the control panel starts the electrostatic generator 6 via the third connection line. After startup, the electrostatic generator 6 supplies direct current according to preset voltage parameters (e.g., 10KV) to provide a continuous electrostatic field for the fiber filter bag 21. When the electrostatic generator 6 outputs current, the insulating ring 17 isolates the current. The insulating ring 17 is made of high-purity alumina ceramic material, possessing extremely high resistivity and withstand voltage, preventing current from passing through the dust collector 1. The metal outer wall is leaking or forming a leakage path, ensuring the safety of operators and avoiding the risk of electric shock. It ensures that all electrostatic energy is concentrated on the fiber filter bag 21, improving the efficiency of electrostatic utilization. At the same time, the connecting plate 19 is made of high-strength nylon engineering plastic. The connecting plate 19 is non-conductive and can further block the conduction of current to the dust collector 1 body, avoiding the phenomenon of current diversion. The bolt 32 is made of nylon material, which is non-conductive and has excellent mechanical strength and insulation performance. Through multi-layer insulation isolation measures, it is ensured that the output power of the electrostatic generator 6 is used entirely for the electrostatic adsorption function of the fiber filter bag 21. When current is conducted to the conductive sheet 22 through the third connecting wire, the conductive sheet 22, made of brass, has good conductivity and corrosion resistance. The conductive sheet 22 receives the current from the electrostatic generator 6 and then conducts it to the conductive rod 24 and the conductive ring 25. The conductive rod 24 is a longitudinally arranged stainless steel rod, and the conductive ring 25 is a transversely arranged annular stainless steel ring. The conductive rod 24 and the conductive ring 25 are welded together to form a rigid conductive skeleton. This conductive skeleton can evenly conduct static electricity to all parts of the inner wall of the fiber filter bag 21, avoiding the problem of localized charge concentration or uneven static electricity distribution, thus ensuring the outer surface of the fiber filter bag 21... The adsorption capacity of each area on the surface is consistent. At the same time, the conductive rod 24 and the conductive ring 25 play a rigid support role inside the fiber filter bag 21. The fiber filter bag 21 is a flexible material, which is prone to swinging left and right, collapsing or sticking together under the impact of high-speed internal swirling airflow, resulting in a reduction in the effective filtration area. The supporting role of the conductive rod 24 and the conductive ring 25 can prevent the fiber filter bag 21 from shifting left and right or deforming due to the influence of internal swirling airflow, and prevent the fiber filter bag 21 from swinging in the airflow and colliding and wearing with the cylinder wall, so that the fiber filter bag 21 always maintains a cylindrical unfolded state, maintains a uniform filtration gap and a stable electrostatic adsorption effect. The rigid conductive frame ensures effective vibration transmission. Without the internal conductive rod 24 and conductive ring 25 as rigid support, the soft fiber filter bag 21 will swing or dent locally when the vibration ring vibrates at high frequency externally. The vibration energy will be absorbed and dispersed by the bag body and cannot be effectively transmitted to the dust cake on the surface of the fiber filter bag 21. By supporting the fiber filter bag 21 with the internal rigid conductive frame, the energy of the external vibration ring can be applied to the entire surface of the fiber filter bag 21 efficiently and evenly. At this point, the air containing fine barite powder particles comes into full contact with the outer surface of the fiber filter bag 21. Under the action of the electrostatic field, the surface of the adsorption layer of the fiber filter bag 21 carries a static charge, which can generate a strong electrostatic adsorption force on the fine barite powder particles with opposite charges or polarity in the air. Under the action of airflow friction and ion collision in the air, the barite powder particles usually carry a surface charge. When the barite powder particles approach the surface of the fiber filter bag 21 with high voltage static electricity, they are quickly adsorbed onto the surface of the adsorption layer. This can adsorb the tiny barite powder particles that cannot be intercepted onto the outer surface of the fiber filter bag 21. The adsorbed fine barite powder particles are blocked outside the fiber filter bag 21 and cannot penetrate the fiber filter bag 21 to enter the exhaust port 3. At this time, the clean air passes smoothly through the fiber gaps of the fiber filter bag 21 and is discharged from the exhaust port 3 to the outside environment. The removal rate of ultrafine dust is improved through electrostatic adsorption, which solves the problem of difficult treatment of fine dust in the barite powder production workshop, improves the air quality in the workshop, and reduces the harm of dust to the health of operators.

[0027] Please see Figure 3 , Figure 4 , Figure 5, Figure 6 and Figure 7 An embodiment of the present invention provides a dust suppression device for a barite powder production workshop. The top of the outer wall of the dust removal cylinder 1 is provided with a rectangular groove 7, and the bottom of the inner wall of the rectangular groove 7 is provided with a through hole 8. The inner wall of the rectangular groove 7 is fitted with the outer wall of the rubber cylinder 18. The bottom of the inner wall of the rubber cylinder 18 is provided with a round hole, which is concentrically aligned with the through hole 8 of the rectangular groove 7. The vibration motor 26 is installed in the rubber cylinder 18, and the inner wall of the rubber cylinder 18 is fitted with the outer wall of the vibration motor 26. The vibration motor 26 is connected to the first vibration coil 29 and the second vibration coil 31 through the vibration transmission rod 27. Furthermore, as the device continues to operate, a large number of fine barite powder particles will gradually be adsorbed and accumulated on the outer surface of the fiber filter bag 21. At this time, the control console starts the vibration motor 26 through the second connection line at a preset time interval. The time interval is adjusted according to the concentration of barite powder in the workshop and the operating conditions of the device. For example, it is started once every 10 to 15 minutes of operation, and each vibration lasts for 10 seconds. This can remove the barite powder particles on the surface of the fiber filter bag 21 in time without affecting the continuous operation of the device, and avoid excessive accumulation of barite powder particles. When the vibratory motor 26 is started, the eccentric block inside the vibratory motor 26 rotates at high speed under the drive of the motor. The centrifugal force generated by the eccentric block changes periodically, thereby exciting high-frequency linear vibration. The vibratory motor 26 directly transmits the high-frequency vibration to the vibration transmission rod 27. During the vibration transmission process, the rubber cylinder 18 buffers and dampens the vibration of the vibratory motor 26. The rubber cylinder 18 is made of highly elastic and aging-resistant rubber material. The rubber cylinder 18 is wrapped around the outside of the vibratory motor 26 and can absorb and isolate the high-frequency vibration energy generated by the vibratory motor 26, prevent the vibration from being directly transmitted to the outer shell of the dust collector 1, prevent the whole device from resonating, reduce the risk of fatigue loosening of bolts 32 and insulating rings 17, and also reduce the noise during operation, ensuring a quiet workshop environment and long-term stable operation of the device. The vibration transmission rod 27 further transmits the received high-frequency vibration energy to the first connecting plate 28 and the second connecting plate 30. The first connecting plate 28 and the second connecting plate 30 are fixedly connected to different height positions of the vibration transmission rod 27, thereby evenly distributing the vibration to the upper and lower vibration rings. The first connecting plate 28 transmits the vibration to the first vibration ring 29, and the second connecting plate 30 transmits the vibration to the second vibration ring 31. Both the first vibration ring 29 and the second vibration ring 31 adopt a ring structure. The first vibration ring 29 and the second vibration ring 31 are tightly fitted to the outside of the fiber filter bag 21. The inner walls of the first vibration ring 29 and the second vibration ring 31 are in close contact with the outer wall of the fiber filter bag 21, ensuring that the fiber filter bag 21 can be subjected to uniform excitation force across its entire height range, thus avoiding the problem of incomplete local dust removal. Barite powder (mainly barium sulfate) has a high density (4.0-4.5 g / cm³). 3The barite dust cake is dense and difficult to clean due to its low hardness (Mohs hardness 2.5-3.5) and tendency to generate static electricity. The vibration motor 26 generates continuous and high-frequency micro-vibrations, which can effectively loosen the compacted barite dust cake and make it fall off in pieces. At the same time, the first vibration ring 29 and the second vibration ring 31 ensure the uniformity of dust removal between the upper and lower parts of the fiber filter bag 21. The conductive rod 24 and the conductive ring 25 support the fiber filter bag 21 to prevent it from swinging and colliding with the cylinder wall in the airflow. At the same time, the insulating ring 17, the insulating bolt 32 and the nylon connecting piece 19 form multiple insulation measures to strictly limit the high voltage static electricity in the working area inside the fiber filter bag 21 and prevent the accumulation and release of static electricity. Under the continuous action of high-frequency vibration, the first vibration ring 29 and the second vibration ring 31 transmit high-frequency vibration to the outer wall of the fiber filter bag 21. A large number of barite powder particles accumulated on the surface of the fiber filter bag 21 lose their adhesion under the violent shaking and fall off the surface of the fiber filter bag 21. At the same time, under the action of electrostatic field, the fine barite powder particles will attract and aggregate with each other due to electrostatic adsorption, gradually forming agglomerates with larger particle sizes. These agglomerates have a larger mass and smaller specific surface area than individual fine particles, so they are easier to shake off from the surface of the filter bag under the action of vibration. The large particles of barite powder shaken off slide down the inner wall of the dust collector 1 under the action of gravity and finally fall into the collection pipe 5 at the bottom. They are collected by the recovery box together with the large particles of barite powder that were previously separated by centrifugation. By vibrating to clean the dust, the filtration gap of the fiber filter bag 21 can be released, the service life of the fiber filter bag 21 can be extended, and the recovery rate of barite powder can be improved.

[0028] Please see Figure 3 , Figure 5 , Figure 6 , Figure 7 , Figure 9 , Figure 10 and Figure 11 An embodiment of the present invention provides a dust suppression device for a barite powder production workshop. The bottom of the outer wall of the vibration motor 26 is provided with a vibration transmission rod 27. The vibration transmission rod 27 extends through the round hole of the rubber cylinder 18 and the through hole 8 of the rectangular groove 7 to the internal space of the dust collection cylinder 1. The outer side of the vibration transmission rod 27 is provided with a first connecting plate 28 and a second connecting plate 30. The first connecting plate 28 is connected to the first vibration ring 29, and the second connecting plate 30 is connected to the second vibration ring 31. The first vibration ring 29 and the second vibration ring 31 are sleeved on the outside of the fiber filter bag 21, and the inner walls of the first vibration ring 29 and the second vibration ring 31 are in contact with the outer wall of the fiber filter bag 21. Furthermore, when the device needs to be stopped or periodically maintained, the barite powder remaining inside the device must be thoroughly cleaned before shutdown to prevent dust from accumulating and agglomerating on the surface of the fiber filter bag 21 for a long time, affecting the filtration efficiency after the next startup. Before shutdown, the control console first issues a shutdown command through the first connection line to turn off the servo motor 13, so that the impeller 16 gradually stops rotating and no longer draws air into the dust collector 1, avoiding additional dust entering the dust collector 1 during subsequent dust removal. This ensures that the cleaning operation is only for the dust already accumulated in the dust collector 1, improving the thoroughness of the cleaning. At the same time, after the suction stops, the airflow disturbance inside the dust collector 1 is reduced, which is conducive to the natural settling of the separated dust under the action of gravity, reducing the suspension and secondary adhesion of dust on the inner wall of the cylinder and the surface of the fiber filter bag 21, creating a stable static environment for subsequent vibration cleaning. Then the control console sends a power-off command through the third connection line to shut down the electrostatic generator 6. The electrostatic generator 6 stops outputting current. At this time, the conductive rod 24 and the conductive ring 25 no longer transmit static electricity. The fiber filter bag 21 loses the effect of the electrostatic field as a whole, and the surface of the adsorption layer no longer carries static charge. This eliminates the electrostatic adsorption force of the fiber filter bag 21 on the fine barite powder particles. After the electrostatic generator 6 is turned off, the fine dust that was originally adsorbed on the surface of the fiber filter bag 21 loses its binding force. Some of the dust falls directly and naturally into the collection pipe 5 below under the action of gravity, which improves the detachment efficiency of subsequent vibration cleaning and avoids the problem of incomplete cleaning caused by electrostatic adhesion. At the same time, it can also prevent the operator from being at risk of electrostatic discharge when touching the device parts. After completing the ventilation shutdown and static electricity removal operations, the control panel starts the vibration motor 26 via the second connection line. The vibration motor 26 begins to generate high-frequency, low-amplitude mechanical vibration. The high-frequency vibration can break the adhesion between the barite powder particles and the surface of the fiber filter bag 21 without causing mechanical damage to the fiber filter bag 21. The vibration motor 26 transmits the high-frequency vibration sequentially to the vibration transmission rod 27, the first connecting plate 28, and the second connecting plate 30. Then, the first connecting plate 28 and the second connecting plate 30 transmit the vibration energy to the first vibration coil 29 and the second vibration coil 31. The first vibration coil 29 and the second vibration coil 31 are distributed vertically along the axial direction of the fiber filter bag 21. The wall is tightly attached to the outer wall of the fiber filter bag 21, and the fiber filter bag 21 is subjected to uniform and synchronous high-frequency vibration. The first vibration ring 29 and the second vibration ring 31 directly apply the high-frequency vibration to the outer surface of the fiber filter bag 21, causing the barite powder particles on the surface of the fiber filter bag 21 to generate severe shear stress and inertial impact force. After the electrostatic adsorption force is eliminated, the high-frequency vibration completely shakes off all the remaining fine barite powder particles on the outside of the fiber filter bag 21. The high-frequency vibration cleaning process lasts for 30 seconds to ensure that there are no barite powder particles remaining on the surface of the fiber filter bag 21 and in the fiber pores, thereby restoring the filtration performance of the fiber filter bag 21 to near its initial state. After 30 seconds of vibration cleaning, the control panel sends a stop command via the second connection line to shut down the vibration motor 26, and the vibration stops. At this time, all the barite powder shaken off from the fiber filter bag 21 inside the device is collected by gravity sedimentation into the collection pipe 5 at the bottom of the dust collector 1, and finally flows into the recycling box connected to the collection pipe 5. The operator then cleans and recycles the barite powder in the recycling box. The forced cleaning thoroughly removes the residual dust on the surface of the fiber filter bag 21, preventing the dust from agglomerating during the device shutdown, ensuring the best filtration efficiency when starting up again, and avoiding the chemical corrosion and physical wear of the fiber filter bag 21 by the long-term accumulation of barite powder particles, extending the service life of the filter bag, realizing the efficient recovery of barite powder, reducing raw material waste, and lowering production costs.

[0029] Working principle: After the device is started, the induced draft fan 11 sends the dust-laden air into the dust collector 1 through the air inlet pipe 9 along the tangential direction of the dust collector 1, forming a spiral downward airflow. Large particles of barite powder are thrown towards the cylinder wall under the action of centrifugal force and fall into the collection pipe 5 for recycling. The internal spiral upward airflow carrying fine barite powder moves upward and comes into contact with the fiber filter bag 21. Meanwhile, the static electricity output by the electrostatic generator 6 is conducted to the inner wall of the fiber filter bag 21 through the conductive sheet 22, the conductive rod 24 and the conductive ring 25, so that the adsorption layer is charged. When the dust-laden airflow passes through the fiber filter bag 21, the charged fine barite powder is electrostatically adsorbed on the outer surface of the fiber filter bag 21, and the clean air passes through the fiber filter bag 21 and is discharged from the exhaust port 3. As the operating time increases, the barite powder on the surface of the fiber filter bag 21 gradually thickens. The control panel starts the vibration motor 26 at set intervals to generate high-frequency vibration. The high-frequency vibration is transmitted to the outer wall of the fiber filter bag 21 through the vibration rod 27, the first vibration ring 29 and the second vibration ring 31, causing the barite powder to fall off and into the collection pipe 5. When stopping the machine, first turn off the induced draft fan 11 and the electrostatic generator 6, and then start the vibration motor 26 to force dust removal and restore the filtration performance of the fiber filter bag 21.

[0030] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A dust suppression device for a barite powder production workshop, comprising a dust collector (1) and a fiber filter bag (21), characterized in that: The dust collector (1) is connected to the air inlet pipe (9), which is connected to the induced draft fan (11) through the air inlet (10) to send dust-laden air tangentially into the dust collector (1) to generate centrifugal force for separation. The dust collector (1) is connected to the conductive sheet (22) through the insulating ring (17), which is connected to the electrostatic generator (6) through the third connecting line. The conductive sheet (22) is connected to the conductive ring (25) at the bottom through the longitudinally extending conductive rod (24). The conductive rod (24) and the conductive ring (25) are in contact with the inner wall of the fiber filter bag (21) to form a protective layer for dust collection. The conductive skeleton that uniformly conducts static electricity and supports the fiber filter bag (21) is set in the exhaust port (3) of the dust collector (1). The fiber filter bag (21) is connected to the conductive sheet (22) through the connecting piece (19). At least two vibration rings are axially spaced on the outside of the fiber filter bag (21), including a first vibration ring (29) and a second vibration ring (31). The first vibration ring (29) and the second vibration ring (31) are connected to the vibration motor (26) through the vibration transmission rod (27). The vibration motor (26) is used to generate high-frequency vibration to clean the barite powder accumulated on the surface of the fiber filter bag (21).

2. The dust suppression device for barite powder production workshop according to claim 1, characterized in that: The upper end of the dust collector (1) is cylindrical, and the lower end of the dust collector (1) is conical with a wider upper end and a narrower lower end. The bottom end of the dust collector (1) is connected to a collection pipe (5). A circular groove (2) is provided at the top of the outer wall of the dust collector (1). An exhaust port (3) is provided at the bottom of the inner wall of the circular groove (2). The exhaust port (3) is connected to the internal space of the dust collector (1). A first connecting hole (4) is provided at the bottom of the inner wall of the circular groove (2). The inner side of the circular groove (2) is fitted with the outer side of the insulating ring (17). The inner wall of the insulating ring (17) is fitted with the outer wall of the connecting piece (19).

3. A dust suppression device for barite powder production workshops according to claim 2, characterized in that: The top of the outer wall of the connecting piece (19) is provided with a second connecting hole (20), which is concentrically aligned with the first connecting hole (4). The bottom of the outer wall of the connecting piece (19) is in contact with the bottom of the inner wall of the circular groove (2). A fiber filter bag (21) is connected to the bottom of the outer wall of the connecting piece (19). The fiber filter bag (21) has a gradient of pore size and fiber diameter. The fiber filter bag (21) is placed in the exhaust port (3) and extends from the exhaust port (3) into the dust collector (1).

4. A dust suppression device for barite powder production workshops according to claim 3, characterized in that: The top of the outer wall of the bonding piece (19) is attached to the bottom of the outer wall of the conductive piece (22). The top of the outer wall of the conductive piece (22) is provided with a third connecting hole (23). The third connecting hole (23) and the second connecting hole (20) of the bonding piece (19) are concentrically aligned. The bolt (32) passes through the third connecting hole (23), the second connecting hole (20) and the first connecting hole (4) to fix the conductive piece (22) and the bonding piece (19) on the dust collector (1). The side of the outer wall of the conductive piece (22) is fitted with the side of the inner wall of the insulating ring (17).

5. A dust suppression device for barite powder production workshops according to claim 4, characterized in that: The bottom of the outer wall of the conductive sheet (22) is connected to a conductive rod (24), and a conductive ring (25) is provided at the bottom of the outer wall of the conductive rod (24). The outer side of the conductive rod (24) and the conductive ring (25) are in contact with the inner side of the fiber filter bag (21). The bottom of the outer wall of the conductive ring (25) is in contact with the bottom of the inner wall of the fiber filter bag (21). The conductive sheet (22) is connected to one end of the third connecting line, and the other end of the third connecting line is connected to the electrostatic generator (6). The electrostatic generator (6) is located at the top of the outer wall of the dust collector (1).

6. A dust suppression device for a barite powder production workshop according to claim 5, characterized in that: The top of the outer wall of the dust collector (1) is provided with a rectangular groove (7), and the bottom of the inner wall of the rectangular groove (7) is provided with a through hole (8). The inner wall of the rectangular groove (7) is fitted with the outer wall of the rubber cylinder (18). The bottom of the inner wall of the rubber cylinder (18) is provided with a round hole, and the round hole and the through hole (8) of the rectangular groove (7) are concentrically aligned. The vibration motor (26) is installed in the rubber cylinder (18), and the inner wall of the rubber cylinder (18) is fitted with the outer wall of the vibration motor (26).

7. A dust suppression device for barite powder production workshops according to claim 6, characterized in that: The bottom of the outer wall of the vibration motor (26) is provided with a vibration transmission rod (27). The vibration transmission rod (27) extends through the round hole of the rubber cylinder (18) and the through hole (8) of the rectangular groove (7) to the internal space of the dust collector (1). The outer side of the vibration transmission rod (27) is provided with a first connecting plate (28) and a second connecting plate (30). The first connecting plate (28) is connected to the first vibration ring (29), and the second connecting plate (30) is connected to the second vibration ring (31). The first vibration ring (29) and the second vibration ring (31) are fitted on the outside of the fiber filter bag (21). The inner walls of the first vibration ring (29) and the second vibration ring (31) are in contact with the outer wall of the fiber filter bag (21).

8. A dust suppression device for barite powder production workshops according to claim 7, characterized in that: The dust collector (1) has an air outlet on its inner wall, which is connected to the air inlet pipe (9). An induced draft fan (11) is installed at the air inlet (10) of the air inlet pipe (9). The air inlet pipe (9) is connected to the air outlet along the tangent direction of the outer wall of the dust collector (1).

9. A dust suppression device for a barite powder production workshop according to claim 8, characterized in that: The outer wall of the induced draft fan (11) is fitted into the inner wall of the air inlet pipe (9). A support rod (12) is provided on the inner wall of the induced draft fan (11). A servo motor (13) is provided at the rear end of the outer wall of the support rod (12). A rotating shaft (14) is provided at the front end of the outer wall of the servo motor (13). The rotating shaft (14) passes through the support rod (12) and is connected to the connecting cylinder (15). An impeller (16) is provided on the side of the outer wall of the connecting cylinder (15). A first connecting line is provided on the outer wall of the servo motor (13). The servo motor (13) is connected to the external control console through the first connecting line. The control console is connected to the vibration motor (26) through the second connecting line.

10. A method for dust suppression in a barite powder production workshop, applicable to the dust suppression device for a barite powder production workshop as described in any one of claims 1-9, characterized in that: The dust reduction method includes the following steps: S1. The air containing barite powder is sent into the dust collector (1) along the tangential direction of the dust collector (1) by the induced draft fan (11), so that the large particles of barite powder are separated and settled and recovered under the action of centrifugal force. S2. During the centrifugal pre-separation, the conductive rod (24) and conductive ring (25) on the inner wall of the fiber filter bag (21) at the exhaust port (3) are charged with static electricity by the electrostatic generator (6), so that an electrostatic field is formed on the surface of the fiber filter bag (21), and the ultrafine barite powder particles that escape with the internal swirling upward airflow are adsorbed on the outer surface of the fiber filter bag (21). S3. When the device is running continuously and the electrostatic generator (6) is not turned off, the control console starts the vibration motor (26) at a set time interval. The vibration motor (26) drives the first vibration ring (29) and the second vibration ring (31) on the outside of the fiber filter bag (21) to generate high-frequency vibration through the vibration transmission rod (27), shaking off and recycling the barite powder agglomerates adsorbed on the surface of the fiber filter bag (21). S4. When the device is shut down, first turn off the induced draft fan (11) and the electrostatic generator (6), then start the vibration motor (26) to perform forced cleaning and restore the initial filtration performance of the fiber filter bag (21).

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