A centralized dust treatment device for non-metallic mineral product processing

Abstract

The present invention relates to the field of dust treatment, and specifically to a centralized dust treatment device for non-metallic mineral product processing, comprising a dust removal tank, wherein a filter inner cylinder is coaxially arranged in the dust removal tank, the lower half of the dust removal tank has an air inlet, and the dust removal tank is also provided with a filter outer cylinder coaxial with the filter inner cylinder, an inner lining partition is coaxially arranged between the filter inner cylinder and the filter outer cylinder, an inner flow channel and an outer flow channel are respectively formed between the inner lining partition and the filter inner cylinder, and between the inner lining partition and the filter outer cylinder, a conversion component is provided between the lower end of the inner lining partition and the air inlet, and the present invention ensures continuous operation without interruption through alternating operation of the filter inner cylinder and the filter outer cylinder, that is, when the air inlet is connected to the inner flow channel, dust-laden gas is filtered from outside to inside through the filter inner cylinder, and at this time the filter outer cylinder cleans itself, and conversely when the air inlet is connected to the outer flow channel, dust-laden gas is filtered from inside to outside through the filter outer cylinder, and at this time the filter inner cylinder cleans itself, thereby significantly improving the treatment efficiency.

Description

Technical Field

[0001] The invention relates to the field of dust treatment, and in particular to a device for centralized treatment of dust from non-metallic mineral product processing. Background Art

[0002] In the process of processing non-metallic mineral products, a large amount of mineral dust will be generated. The treatment measures taken for this mineral dust are mainly to pass it and the air into the bag dust collector for treatment. Due to the large amount of mineral dust and its long duration, the filtering performance of the filter bag will be greatly reduced over a long period of time. After that, it is necessary to stop the dust collector, open the dust removal box, remove the filter bag, soak and clean it with cleaning fluid, and then install it back. The whole process is inconvenient to operate.

[0003] The currently disclosed Chinese patent CN118022449A discloses a mineral dust treatment device, including a dust removal box, a porous plate is arranged on the upper part of the dust removal box, a plurality of filter bags are arranged on the porous plate, a skeleton is arranged in each of the filter bags, a plurality of cleaning modules are arranged below the porous plate, the cleaning modules are arranged one by one with the filter bags, the cleaning modules include a folding tube, the folding tube is connected to the folding module, one end of the folding tube is open, the other end of the folding tube is fixed with an end cap, the end cap is fixed on the porous plate, the end cap is used to connect the cleaning system and the drying system, the folding module includes an annular conveyor belt, a connecting ring, a driving unit, the ring The circular conveyor belt is arranged corresponding to the filter bag, and the circular conveyor belt is installed on the driving unit. The driving unit is used to drive the circular conveyor belt to perform translation and rotation movements in the vertical plane. A connecting ring is fixed on the circular conveyor belt, and the connecting ring is coaxially fixed on the open end of the folding tube. The driving unit includes two driving shafts, and the two driving shafts are sequentially arranged on one side of the filter bag along the height direction. The two driving shafts are horizontally arranged, and each of the driving shafts is coaxially fixed with a pulley, and the circular conveyor belt is installed between the two pulleys. The two driving shafts are both transmission-connected to the driving system, and a support plate is rotatably installed on the driving shaft, and the support plate is fixed on the porous plate.

[0004] According to the above patent, the above patent provides a cleaning module for automatically cleaning the filter bags in the dust removal box, so that the filter bags do not need to be removed for automatic cleaning. However, the automatic cleaning process takes a certain amount of time, during which the dust removal efficiency will decrease, and cleaning through the cleaning module is more cumbersome, and a folding tube needs to be put on the filter bag during cleaning, and the folding tube needs to be retracted after cleaning. Therefore, there is a need for a device that can process dust without affecting the dust removal efficiency. Summary of the invention

[0005] In view of the problems existing in the prior art, a centralized dust treatment device for processing non-metallic mineral products is provided. The present invention adopts an alternating working mode of an inner filter cylinder and an outer filter cylinder, that is, when the air inlet is connected to the inner flow channel, the dust-containing gas is filtered from the outside to the inside through the inner filter cylinder, and the outer filter cylinder cleans itself at this time; conversely, when the air inlet is connected to the outer flow channel, the dust-containing gas is filtered from the inside to the outside through the outer filter cylinder, and the inner filter cylinder cleans itself at this time, thereby ensuring continuous operation without interruption and significantly improving the treatment efficiency.

[0006] In order to solve the problems of the prior art, the present invention provides a centralized dust treatment device for processing dust of non-metallic mineral products, including a vertical dust removal tank, a filter inner cylinder is coaxially arranged in the dust removal tank, the lower half of the dust removal tank has an air inlet, and the dust removal tank is also provided with a filter outer cylinder coaxial with the filter inner cylinder, the inner diameter of the filter outer cylinder is larger than the outer diameter of the filter inner cylinder, an inner lining partition is coaxially arranged between the filter inner cylinder and the filter outer cylinder, an inner flow channel and an outer flow channel are respectively formed between the inner lining partition and the filter inner cylinder, and between the inner lining partition and the filter outer cylinder, a conversion component for switching the air inlet to be connected with the inner flow channel or the outer flow channel is provided between the lower end of the inner lining partition and the air inlet, when the air inlet is connected with the inner flow channel through the conversion component, the filter inner cylinder filters dust and the filter outer cylinder cleans itself at the same time, conversely when the air inlet is connected with the outer flow channel, the filter outer cylinder filters dust and the filter inner cylinder cleans itself at the same time.

[0007] Preferably, the conversion assembly includes a ring sleeve arranged between the lining partition and the dust removal tank, and a linear drive for driving the ring sleeve to move along the axial direction of the dust removal tank. The ring sleeve is fixedly connected to the lining partition, and the outer edge of the ring sleeve is in close contact with the inner wall of the dust removal tank.

[0008] Preferably, the upper end of the dust removal tank has a tank cover, and the tank cover is provided with a rubber ring that is in close contact with the upper end of the liner partition, and the rubber ring is used to keep the upper end in a sealed state at all times when the liner partition moves following the ring sleeve.

[0009] Preferably, the movement of the ring sleeve in the dust removal tank has a highest point and a lowest point. When the ring sleeve moves to the highest point, the air inlet is connected to the inner flow channel. When the ring sleeve moves to the lowest point, the air inlet is connected to the outer flow channel.

[0010] Preferably, the inner and outer sides of the lining partition are respectively provided with inner scraping strips and outer scraping strips that contact the inner filter cylinder and the outer filter cylinder, and the inner scraping strips and the outer scraping strips are both made of flexible materials. The tank cover on the dust removal tank can rotate relative to the lining partition, and the inner filter cylinder and the outer filter cylinder are fixedly connected to the tank cover.

[0011] Preferably, the inner and outer sides of the lining partition are respectively provided with grooves in which the inner scraper strip and the outer scraper strip can slide and engage, and the grooves are formed by two extension strips. When the lining partition moves with the ring sleeve, the inner scraper strip and the outer scraper strip are in a stationary state relative to the lining partition.

[0012] Preferably, the dust removal tank is provided with a step for installing the linear drive, and the ring sleeve is provided with a guide rod which vertically passes through the step and extends outward, and the guide rod is connected to the linear drive.

[0013] Preferably, a sliding sleeve is fixedly provided on the guide rod and is arranged on the outside of the dust removal tank. The linear drive has a pneumatic chamber body in which the sliding sleeve cover is arranged. The pneumatic chamber body has a high-pressure port into which high-pressure gas can be introduced to cause the sliding sleeve to lift.

[0014] Preferably, a buffer spring fixedly connected between the sliding sleeve and the pneumatic warehouse body is provided in the pneumatic warehouse body. When the pneumatic warehouse body is depressurized, the lining partition drives the ring sleeve to fall to the lowest point under its own gravity, and the buffer spring plays a buffering effect.

[0015] Preferably, the air pressure chamber body is provided with a pressure relief port capable of keeping the sliding sleeve sliding normally therein.

[0016] Compared with the prior art, the beneficial effects of the present application are as follows: the present invention adopts the alternating working mode of the filter inner cylinder and the filter outer cylinder, that is, when the air inlet is connected to the inner flow channel, the dust-containing gas is filtered from the outside to the inside through the filter inner cylinder, and the filter outer cylinder cleans itself at this time; conversely, when the air inlet is connected to the outer flow channel, the dust-containing gas is filtered from the inside to the outside through the filter outer cylinder, and the filter inner cylinder cleans itself at this time, thereby achieving seamless connection between dust filtration and self-cleaning, ensuring continuous operation without interruption, significantly improving processing efficiency, and avoiding production interruptions caused by traditional single filtration and cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The present invention is a three-dimensional structural schematic diagram showing the top surface of a centralized dust treatment device for processing non-metallic mineral products.

[0018] Figure 2 The present invention is a three-dimensional structural schematic diagram showing the bottom surface of a centralized dust treatment device for processing non-metallic mineral products.

[0019] Figure 3 The present invention is a plan cross-sectional view of a centralized dust treatment device for non-metallic mineral product processing.

[0020] Figure 4 The present invention is a three-dimensional structural cross-sectional view of a centralized dust treatment device for non-metallic mineral product processing.

[0021] Figure 5 yes Figure 3An enlarged schematic diagram of point A.

[0022] Figure 6 yes Figure 3 An enlarged schematic diagram of point B.

[0023] Figure 7 The present invention is a three-dimensional structural diagram of an inner filter cylinder and an outer filter cylinder of a centralized dust treatment device for processing non-metallic mineral products.

[0024] Figure 8 The present invention is a top view of an inner filter cylinder and an outer filter cylinder of a centralized dust treatment device for processing non-metallic mineral products.

[0025] Fig. 9 yes Figure 8 Cross-sectional view of the local three-dimensional structure at CC.

[0026] Fig.10 yes Figure 3 Cross-sectional view of the three-dimensional structure at DD.

[0027] The numbers in the figure are: 1. dust removal tank; 11. air inlet; 12. inner discharge port; 121. inner entrance; 13. outer discharge port; 131. outer entrance; 14. dust suction port; 15. dust collection port; 2. filter inner cylinder; 3. filter outer cylinder; 4. lining partition; 41. inner flow channel; 42. outer flow channel; 43. inner scraper strip; 44. outer scraper strip; 45. extension strip; 5. conversion assembly; 51. sleeve; 511. guide rod; 512. sleeve; 52. linear drive; 521. air pressure chamber; 5211. high pressure port; 5212. pressure relief port; 522. buffer spring; 6. tank cover; 61. rubber ring. DETAILED DESCRIPTION

[0028] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0029] See also Figure 1-Figure 4As shown, a non-metallic mineral product processing dust centralized treatment device includes a vertical dust removal tank 1, wherein a filter inner cylinder 2 is coaxially arranged in the dust removal tank 1, and an air inlet 11 is provided in the lower half of the dust removal tank 1, and a filter outer cylinder 3 coaxially arranged with the filter inner cylinder 2 is also provided in the dust removal tank 1, wherein the inner diameter of the filter outer cylinder 3 is larger than the outer diameter of the filter inner cylinder 2, and an inner lining partition 4 is coaxially arranged between the filter inner cylinder 2 and the filter outer cylinder 3, and between the inner lining partition 4 and the filter inner cylinder 2, and between the inner lining partition 4 and the filter outer cylinder An inner flow channel 41 and an outer flow channel 42 are respectively formed between the inner lining partition 4 and the air inlet 11, and a conversion component 5 for switching the air inlet 11 to be connected with the inner flow channel 41 or the outer flow channel 42 is provided between the lower end of the lining partition 4 and the air inlet 11. When the air inlet 11 is connected with the inner flow channel 41 through the conversion component 5, the filter inner cylinder 2 filters dust and the filter outer cylinder 3 cleans itself at the same time. Conversely, when the air inlet 11 is connected with the outer flow channel 42, the filter outer cylinder 3 filters dust and the filter inner cylinder 2 cleans itself at the same time.

[0030] During the dust removal process, when the inner filter cylinder 2 is used, the dust gas passes into the inner filter cylinder 2 from the outside to the inside, and the dust particles are blocked on the outside of the inner filter cylinder 2. When the outer filter cylinder 3 is used, the dust gas passes out of the outer filter cylinder 3 from the inside to the outside, and the dust particles are blocked on the inside of the outer filter cylinder 3. The dust removal tank 1 has an inner discharge port 12 and an outer discharge port 13 for the inner filter cylinder 2 and the outer filter cylinder 3 to discharge clean air, and an inner inlet 121 and an outer inlet 131 for the inner filter cylinder 2 and the outer filter cylinder 3 to pass a cleaning medium. The cleaning medium can be a high-pressure gas or Clean the water source. During the cleaning process, when cleaning the filter inner cylinder 2, the cleaning medium passes out of the filter inner cylinder 2 from the inside to the outside, and the dust particles are removed from the filter holes. When cleaning the filter outer cylinder 3, the cleaning medium passes into the filter outer cylinder 3 from the outside to the inside, and the dust particles are removed from the filter holes. The complete process of centralized dust treatment for non-metallic mineral product processing is as follows: when the air inlet 11 is connected to the inner flow channel 41 through the conversion mechanism, the dust-containing gas enters from the air inlet 11 of the lower half of the dust removal tank 1, passes through the inner flow channel 41, and passes through the filter inner cylinder 2 from the outside to the inside. During the whole process, the larger dust particles are blocked on the outside of the filter inner cylinder 2, and the clean gas passes through the filter inner cylinder 2 and is discharged from the inner discharge port 12. At the same time, the filter outer cylinder 3 uses the inner lining partition 4 and the outer flow channel 42 formed therewith to clean the filter outer cylinder 3 itself. The high-pressure gas or water washing liquid is injected from the outer inlet 131 and flows from the outside to the inside to remove the dust inside the filter outer cylinder 3. With the processing demand or the predetermined time interval, the conversion mechanism is switched so that the air inlet 11 is connected with the outer flow channel 42. At this time, the filter inner cylinder 2 stops taking in air and switches to the second filter outer cylinder 3. When the cleaning mode is entered, the filter outer cylinder 3 begins to take on the filtering task. When the air inlet 11 is connected to the external flow channel 42, the filter inner cylinder 2 introduces the cleaning medium through the inner inlet 121, and removes the dust on the outer wall of the filter inner cylinder 2 from the inside to the outside. The dust particles are washed or blown out of the filter holes. At this time, the dust-laden gas enters from the air inlet 11, passes through the external flow channel 42, and passes through the filter outer cylinder 3 from the inside to the outside to complete the filtering. The dust is captured on the inner side of the filter outer cylinder 3, and the clean gas is discharged through the external exhaust port 13, completing the concentrated and continuous dust treatment.

[0031] See also Figure 3-Figure 5 As shown, the conversion assembly 5 includes a ring sleeve 51 arranged between the lining partition 4 and the dust removal tank 1, and a linear drive 52 for driving the ring sleeve 51 to move along the axial direction of the dust removal tank 1, the ring sleeve 51 is fixedly connected to the lining partition 4, and the outer edge of the ring sleeve 51 is in close contact with the inner wall of the dust removal tank 1.

[0032] When the control system instructs the linear drive 52 to operate and pushes the annulus 51 to move in a certain axial direction, the lining partition 4 moves accordingly, causing the inner flow channel 41 or the outer flow channel 42 to open or close. If the annulus 51 moves above the air inlet 11, the outer flow channel 42 is closed and the inner flow channel 41 is opened, so that the dust-laden gas flows to the filter inner tube 2. If the annulus 51 moves below the air inlet 11, the outer flow channel 42 is opened and the inner flow channel 41 is closed, so that the dust-laden gas flows to the filter outer tube 3. During the movement of the annulus 51, its close contact with the inner wall ensures the sealing of the switching process, prevents the dust-laden gas from entering the inner flow channel 41 and the outer flow channel 42 at the same time, and avoids the confusion of the air flow.

[0033] See also Figure 3 and Figure 4 As shown, the upper end of the dust removal tank 1 has a tank cover 6, and the tank cover 6 is provided with a rubber ring 61 that is in close contact with the upper end of the lining partition 4. The rubber ring 61 is used to keep the upper end in a sealed state when the lining partition 4 moves following the ring sleeve 51.

[0034] When the linear drive 52 operates the ring sleeve 51 to move, the ring sleeve 51 moves along the axial direction of the dust removal tank 1, and the lining partition 4 moves up and down accordingly. The rubber ring 61 follows the movement of the lining partition 4 and always maintains close contact with it. No matter where the lining partition 4 moves up or down, the rubber ring 61 maintains a sealed state. In the process of the lining partition 4 moving up and down, the rubber ring 61 relies on its elasticity to adapt to the slight changes in the lining partition 4, maintains the sealing effect, and prevents the dust-containing gas from flowing through the gap through the filter inner cylinder 2 or the filter outer cylinder 3 being cleaned.

[0035] See also Figure 3-Figure 5 As shown, the movement of the ring sleeve 51 in the dust removal tank 1 has a highest point and a lowest point. When the ring sleeve 51 moves to the highest point, the air inlet 11 is connected with the inner flow channel 41. When the ring sleeve 51 moves to the lowest point, the air inlet 11 is connected with the outer flow channel 42.

[0036] The dust collecting tank 1 is provided with a dust suction port 14 connected to the external flow channel 42 at the highest point of the ring sleeve 51 movement. The bottom of the dust collecting tank 1 is also provided with a dust discharge port 15 connected to the internal flow channel 41. The ring sleeve 51 controls the connection between the air inlet 11 and the internal flow channel 41 or the external flow channel 42 according to its vertical movement position in the dust collecting tank 1. When the ring sleeve 51 rises to the highest point, the air inlet 11 is connected to the internal flow channel 41, and the gas and dust are filtered out through the inner filter cylinder 2. Filtration, on the contrary, the ring sleeve 51 drops to the lowest point, the air inlet 11 switches to the external flow channel 42, and the gas is filtered through the filter outer cylinder 3. When the ring sleeve 51 is at the highest point, the dust suction port 14 opened on the dust removal tank 1 is connected to the external flow channel 42, allowing the dust falling from the filter outer cylinder 3 to be discharged, and the dust discharge port 15 at the bottom of the dust removal tank 1 is connected to the internal flow channel 41. When the filter inner cylinder 2 is filtering, the dust is discharged from the dust discharge port 15, and the discharged dust is collected together.

[0037] See also Figure 3 , Figure 4 and Figure 7-Figure 10 As shown, the inner and outer sides of the lining partition 4 are respectively provided with an inner scraper strip 43 and an outer scraper strip 44 which are in contact with the filter inner cylinder 2 and the filter outer cylinder 3, and the inner scraper strip 43 and the outer scraper strip 44 are both made of flexible materials. The tank cover 6 on the dust removal tank 1 can rotate relative to the lining partition 4, and the filter inner cylinder 2 and the filter outer cylinder 3 are both fixedly connected to the tank cover 6.

[0038] The inner side of the lining partition 4 is provided with an inner scraper bar 43 in contact with the filter inner cylinder 2, and the outer side is provided with an outer scraper bar 44 in contact with the filter outer cylinder 3. Both the inner scraper bar 43 and the outer scraper bar 44 are made of flexible material and can fit the surface contours of the filter inner cylinder 2 and the filter outer cylinder 3. When the tank cover 6 rotates, since the filter inner cylinder 2 and the filter outer cylinder 3 are fixedly connected to the tank cover 6, the tank cover 6 drives the filter inner cylinder 2 and the filter outer cylinder 3 to rotate together. At this time, the filter inner cylinder 2 and the filter outer cylinder 3 are in a rotating state relative to the inner scraper bar 43 and the outer scraper bar 44, and the inner scraper bar 43 and the outer scraper bar 44 remain stationary, thereby scraping off the dust on the surface of the filter inner cylinder 2 and the filter outer cylinder 3. The entire action achieves self-cleaning without interrupting the filtration.

[0039] See also Figure 7-Figure 10 As shown, the inner and outer sides of the lining partition 4 are respectively provided with grooves in which the inner scraper strip 43 and the outer scraper strip 44 can slide and engage, and the grooves are formed by two extension strips 45. When the lining partition 4 moves following the ring sleeve 51, the inner scraper strip 43 and the outer scraper strip 44 are in a stationary state relative to the lining partition 4.

[0040] The inner and outer sides of the lining partition 4 are respectively provided with a groove, and the groove is composed of two extension strips 45. The inner scraper strip 43 and the outer scraper strip 44 are sliding structures, embedded in the groove of the lining partition 4. When the lining partition 4 moves up and down axially with the ring sleeve 51, the inner scraper strip 43 and the outer scraper strip 44 remain relatively still with the lining partition 4, and only slide in the groove, so as to prevent the inner scraper strip 43 and the outer scraper strip 44 from gradually separating from the surface of the filter inner cylinder 2 and the filter outer cylinder 3 following the movement of the lining partition 4. When the tank cover 6 rotates, the inner scraper strip 43 and the outer scraper strip 44 are constrained by the groove, and the surface of the filter inner cylinder 2 and the filter outer cylinder 3 rotates relative to the inner scraper strip 43 and the outer scraper strip 44, and the dust attached to the surface of the filter inner cylinder 2 and the filter outer cylinder 3 is scraped off, and the dust removal is achieved in combination with the effect of the cleaning medium.

[0041] See also Figure 3-Figure 6 As shown, the dust removal tank 1 is provided with a step for installing the linear drive 52 , and the ring sleeve 51 is provided with a guide rod 511 which vertically passes through the step and extends outward, and the guide rod 511 is connected to the linear drive 52 .

[0042] The linear drive 52 installed on the dust removal tank 1 has a push-pull action, providing a power source for the ring sleeve 51. The ring sleeve 51 is equipped with a guide rod 511 with a step extending vertically, which effectively guides the movement path of the ring sleeve 51. When the linear drive 52 is in action, the power is transmitted to the ring sleeve 51 through the guide rod 511, pushing or pulling it to move along the axial direction of the dust removal tank 1, driving the lining partition 4 to move up and down, and driving the ring sleeve 51 to move to the predetermined highest point or lowest point according to demand, thereby realizing the switching of the air inlet 11 and the inner flow channel 41 or the outer flow channel 42.

[0043] See also Figure 3-Figure 6 As shown, a sliding sleeve 512 is fixedly provided on the guide rod 511 and is arranged on the outside of the dust removal tank 1. The linear drive 52 has an air pressure chamber 521 in which the sliding sleeve 512 is covered. The air pressure chamber 521 has a high-pressure port 5211 into which high-pressure gas can be introduced to lift the sliding sleeve 512.

[0044] When high-pressure gas is introduced into the air pressure chamber 521, the pressure increases, forcing the sleeve 512 to push up, and acts on the ring sleeve 51 through the guide rod 511, driving it to move upward. The lifting height of the sleeve 512 is controlled by adjusting the gas pressure, and precise position control is achieved. Until the ring sleeve 51 moves to the highest position, the air inlet 11 is connected with the internal flow channel 41, so that the dust-containing gas can be filtered through the filter inner tube 2. When the air pressure chamber 521 is depressurized, the ring sleeve 51 is driven down by the gravity of the inner lining partition 4 until it drops to the lowest point. At this time, the air inlet 11 is connected with the external flow channel 42, so that the dust-containing gas can be filtered through the filter outer tube 3, and the flow path of the dust-containing gas can be accurately regulated.

[0045] See also Figure 3-Figure 6 As shown, a buffer spring 522 fixedly connected between the sliding sleeve 512 and the air pressure chamber body 521 is provided in the air pressure chamber body 521. When the air pressure chamber body 521 is depressurized, the lining partition 4 drives the ring sleeve 51 to fall to the lowest point under its own gravity. At this time, the buffer spring 522 plays a buffering effect.

[0046] When the gas is released from the air pressure chamber 521, the pressure decreases and the sleeve 512 is no longer supported. The upward thrust is weakened, and the sleeve 512 and the connected liner partition 4 begin to slide downward and move toward the lowest point under the action of their own gravity and the weight of the ring sleeve 51. During the falling process, the buffer spring 522 plays a role, absorbing and slowing down the impact force of the direct fall, avoiding a hard collision between the sleeve 512 and the air pressure chamber 521, and ensuring the stability of the ring sleeve 51 when it descends to the lowest point.

[0047] See also Figure 6 As shown, the air pressure chamber body 521 is provided with a pressure relief port 5212 which can keep the sliding sleeve 512 sliding normally therein.

[0048] When high-pressure gas is filled into the air pressure chamber 521, the gas pressure is transmitted to the sleeve 512, pushing it to slide upward. In order to ensure that the sleeve 512 can be effectively lifted, the gas between the sleeve 512 and the air pressure chamber 521 is released through the pressure relief port 5212, thereby eliminating obstacles that may be caused by internal over-pressure difference during the rising process of the sleeve 512, ensuring smooth sliding and achieving precise positioning.

[0049] The present invention adopts the alternating working mode of the filter inner cylinder 2 and the filter outer cylinder 3, that is, when the air inlet 11 is connected with the inner flow channel 41, the dust-containing gas is filtered from the outside to the inside through the filter inner cylinder 2, and the filter outer cylinder 3 cleans itself at this time; conversely, when the air inlet 11 is connected with the outer flow channel 42, the dust-containing gas is filtered from the inside to the outside through the filter outer cylinder 3, and the filter inner cylinder 2 cleans itself at this time, thereby ensuring continuous operation without interruption, significantly improving the processing efficiency, and avoiding production interruptions caused by traditional single filtering and cleaning.

[0050] The above embodiments only express one or several implementation modes of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A device for centralized treatment of dust in the processing of non-metallic mineral products, comprising a vertical dust removal tank (1), a filter inner cylinder (2) being coaxially arranged in the dust removal tank (1), and an air inlet (11) being provided at the lower half of the dust removal tank (1); It is characterized in that The dust removal tank (1) is also provided with a filter outer cylinder (3) coaxial with the filter inner cylinder (2); the inner diameter of the filter outer cylinder (3) is larger than the outer diameter of the filter inner cylinder (2); an inner lining partition (4) is coaxially provided between the filter inner cylinder (2) and the filter outer cylinder (3); an inner flow channel (41) and an outer flow channel (42) are formed between the inner lining partition (4) and the filter inner cylinder (2), and between the inner lining partition (4) and the filter outer cylinder (3); A conversion assembly (5) for switching the air inlet (11) to communicate with the inner flow channel (41) or the outer flow channel (42) is provided between the lower end of the inner lining baffle (4) and the air inlet (11); when the air inlet (11) is connected to the inner flow channel (41) through the conversion assembly (5), the filter inner cylinder (2) filters dust while the filter outer cylinder (3) cleans itself; conversely, when the air inlet (11) is connected to the outer flow channel (42), the filter outer cylinder (3) filters dust while the filter inner cylinder (2) cleans itself; The conversion assembly (5) comprises a ring sleeve (51) arranged between the inner lining partition (4) and the dust removal tank (1), and a linear drive (52) for driving the ring sleeve (51) to move along the axial direction of the dust removal tank (1); the ring sleeve (51) is fixedly connected to the inner lining partition (4), and the outer edge of the ring sleeve (51) is in close contact with the inner wall of the dust removal tank (1); The upper end of the dust removal tank (1) is provided with a tank cover (6), and the tank cover (6) is provided with a rubber ring (61) which is in close contact with the upper end of the liner baffle (4), and the rubber ring (61) is used to keep the upper end of the liner baffle (4) in a sealed state at all times when the liner baffle (4) moves along with the ring sleeve (51); The movement of the ring sleeve (51) in the dust removal tank (1) has a highest point and a lowest point. When the ring sleeve (51) moves to the highest point, the air inlet (11) is connected to the inner flow channel (41). When the ring sleeve (51) moves to the lowest point, the air inlet (11) is connected to the outer flow channel (42). The dust removal tank (1) is provided with a step for installing the linear drive (52), and the ring sleeve (51) is provided with a guide rod (511) that vertically passes through the step and extends outward, and the guide rod (511) is connected to the linear drive (52); The dust removal tank (1) has an inner discharge port (12) and an outer discharge port (13) for discharging clean air from the inner filter cylinder (2) and the outer filter cylinder (3), and an inner inlet (121) and an outer inlet (131) for introducing a cleaning medium into the inner filter cylinder (2) and the outer filter cylinder (3); A dust suction port (14) in communication with the external flow channel (42) is provided on the dust removal tank (1) at the highest point of movement of the ring sleeve (51), and a dust discharge port (15) in communication with the internal flow channel (41) is also provided at the bottom of the dust removal tank (1).

2. The device for centralized dust treatment of non-metallic mineral products processing according to claim 1 is characterized in that: An inner scraper strip (43) and an outer scraper strip (44) are respectively provided on the inner side and the outer side of the lining partition (4) and are in contact with the filter inner cylinder (2) and the filter outer cylinder (3); the inner scraper strip (43) and the outer scraper strip (44) are both made of a flexible material; a tank cover (6) on the dust removal tank (1) is rotatable relative to the lining partition (4); and the filter inner cylinder (2) and the filter outer cylinder (3) are both fixedly connected to the tank cover (6).

3. The device for centralized dust treatment of non-metallic mineral products processing according to claim 2 is characterized in that: The inner side and the outer side of the lining partition (4) are respectively provided with slots in which the inner scraping strip (43) and the outer scraping strip (44) can be slidably engaged, the slots being formed by two extension strips (45), and when the lining partition (4) moves following the annular sleeve (51), the inner scraping strip (43) and the outer scraping strip (44) are in a stationary state relative to the lining partition (4).

4. The device for centralized dust treatment of non-metallic mineral products processing according to claim 3 is characterized in that: A sliding sleeve (512) is fixedly provided on the guide rod (511) and is arranged on the outside of the dust removal tank (1). The linear drive (52) has a gas pressure chamber (521) in which the sliding sleeve (512) is covered. The gas pressure chamber (521) has a high-pressure port (5211) into which high-pressure gas can be introduced to lift the sliding sleeve (512).

5. The device for centralized treatment of dust from non-metallic mineral products processing according to claim 4, characterized in that: The air pressure chamber (521) is provided with a buffer spring (522) fixedly connected between the sliding sleeve (512) and the air pressure chamber (521). When the air pressure chamber (521) is depressurized, the inner liner partition (4) drives the ring sleeve (51) to fall to the lowest point under its own gravity. At this time, the buffer spring (522) plays a buffering role.

6. The device for centralized treatment of dust from non-metallic mineral products processing according to claim 4, characterized in that: The air pressure chamber body (521) is provided with a pressure relief port (5212) capable of keeping the sliding sleeve (512) sliding normally therein.

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