Pulse-jet baghouse for processing of germinated rice

Abstract

The application discloses a kind of germ rice processing dust pulse bag type purification device, it is related to dust purification filtering technical field, including box, partition, cloth bag filter component, elastic component, shunt pressure-bearing component, no skeleton cloth bag upper end is fixed, lower end is connected elastic bottom plate, pressure head is located in no skeleton cloth bag and is connected with elastic bottom plate by connecting rod, pulse airflow is acted on pressure head by venturi pipe, most airflow realizes cloth bag global blowback by central flow-through hole, a small amount of airflow is generated by helical shunt hole cyclone, synchronous drive cloth bag axial stretch and bottom torsion composite dust removal.The device relies on pulse air pressure self-driving, without external motor air cylinder, eliminate the hidden danger of explosion-proof ignition;Axial stretch can tear oily dust cake, twist shake off embedded superfine rice bran dust, solve the problem that filter bag top and bottom dust removal is uneven, easy to paste bag, airflow shunt does not interfere with each other, dust removal effect is stable, adapt to germ rice high viscous organic dust long-term purification.

Description

Technical Field

[0001] This invention relates to the field of dust purification and filtration technology, specifically to a pulse bag filter device for purifying dust from germ rice processing. Background Technology

[0002] During the processing of germ rice, the milling, grading, and polishing of paddy rice continuously generate a large amount of organic dust containing starch and rice bran. This type of dust has a small particle size and is easy to adhere to. If it is directly emitted, it will not only pollute the workshop environment and endanger the respiratory health of operators, but also pose a dust explosion hazard and cause raw material loss. Therefore, pulse bag filters are commonly used in the industry to purify the dust in the processing exhaust gas. Pulse bag filters rely on filter bags to intercept dust in the exhaust gas. After dust accumulates on the outer wall of the filter bag, it will increase the air resistance of the equipment and reduce the filtration throughput. In order to ensure long-term stable dust removal, existing equipment is equipped with a pulse cleaning mechanism. High-pressure pulse gas is output through the pulse tube and sprayed in reverse into the inside of the filter bag. The instantaneous reverse airflow causes the filter bag to expand and shake, causing the dust attached to the outer wall to fall off and settle into the ash hopper, thereby restoring the filtration performance of the filter bag.

[0003] In existing pulse bag filters, the pulse tubes are uniformly arranged above all the filter bags, and the nozzles of the pulse tubes point downwards to the corresponding filter bag openings to perform the blowing operation.

[0004] However, this structure has obvious defects in long-term actual operation: when the high-pressure pulsed gas is injected into the filter bag from the nozzle downwards, the airflow energy decreases rapidly with the increase of the injection distance. The section near the pulse tube bag opening can obtain sufficient and strong reverse airflow, and the dust removal and shaking effect is excellent. However, the middle and lower part of the filter bag is far away from the pulse tube nozzle. When the pulsed airflow reaches this area, the wind pressure and flow velocity decrease significantly, the airflow disturbance intensity is insufficient, and it is difficult to drive the lower part of the filter bag to deform and shake fully. The rice bran and starch dust adhering to the outer wall of the lower half of the filter bag cannot be effectively removed, which ultimately results in a serious uneven dust removal effect from top to bottom of the entire filter bag.

[0005] Uneven dust removal can trigger a series of negative consequences: Dust accumulates and thickens at the bottom of the filter bags, significantly increasing the overall operating resistance of the equipment. The power of the fans in the germ rice processing production line needs to be increased to maintain ventilation, leading to a significant increase in energy consumption. Localized dust caking on the filter bags blocks the filter material pores, causing a continuous decline in filtration efficiency and exceeding dust concentration standards at the exhaust outlet, failing to meet environmental emission requirements for grain processing. Long-term localized dust accumulation also exacerbates filter material corrosion and wear, shortening the overall lifespan of the filter bags. Frequent filter bag replacements increase production line maintenance costs. Furthermore, undried dust easily clumps on the filter bag surface, which is susceptible to mold growth due to workshop temperature and humidity. When dust falls off, it can generate secondary dust, contaminating the clean germ rice product and reducing product quality. Summary of the Invention

[0006] Based on this, the purpose of the present invention is to provide a pulse bag filter for purifying germ rice processing dust, so as to solve the technical problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a pulse bag filter for processing germ rice dust, comprising a housing, a partition plate, a bag filter assembly, an elastic assembly, a flow diversion and pressure bearing assembly, a bottom support frame, a pulse airflow assembly, an air tank, and a valve assembly; The partition plate is located inside the box and divides the inside of the box into a clean air chamber and a dust chamber; the air bag is connected to the pulse airflow assembly through a valve assembly, and the pulse airflow assembly is arranged in the clean air chamber and is equipped with a venturi tube; The bottom support frame is fixedly installed at the bottom of the dust chamber, and the elastic component is assembled on the bottom support frame. The elastic component includes a base, a spring frame, a ball bearing, a guide cylinder, a guide rod, and a flexible protective sleeve. The base is fixed to the bottom support frame. The guide rod and the guide cylinder slide together to achieve vertical guidance and circumferential rotation. The spring frame is compressed and released after being compressed and then rebounds to its original position. The upper end of the spring frame and the elastic base plate are arranged in a ring to reduce rotational friction. The flexible protective sleeve covers the outside of the spring frame to provide dust protection. The guide rod is vertically fixed to the lower end of the elastic base plate, the guide cylinder is fixedly installed on the base, and the guide rod is slidably inserted into the inside of the guide cylinder; The bag filter assembly includes a top fixing ring, a frameless filter bag, and an elastic bottom plate. The upper end of the frameless filter bag is fixed to the partition plate by the top fixing ring and corresponds to the bottom of the venturi tube. The lower end of the frameless filter bag is fixed to the elastic bottom plate, and the elastic bottom plate is supported on the elastic assembly. The finished length of the frameless cloth bag after assembly is less than the total length of the bag itself, and the natural folds of the bag body form a deformation allowance that can be stretched downwards. The diversion and pressure bearing assembly is arranged below the venturi tube and inside the frameless bag. The diversion and pressure bearing assembly includes a pressure bearing head, a central flow hole, a spiral diversion hole, and a connecting rod. The pressure bearing head is rigidly connected to the elastic base plate through the connecting rod. The pressure head receives the pulsed airflow output from the venturi tube and drives the elastic bottom plate to move downward by the airflow pressure, thereby causing the frameless filter bag to stretch axially. The spiral diversion hole diverts the airflow to generate tangential thrust, which drives the pressure head to twist and simultaneously drives the bottom of the frameless filter bag to rotate. The central flow hole passes through the upper and lower end faces of the pressure head, allowing most of the pulsed airflow to pass through and achieve full-area reverse blowing of the filter bag. The spiral diversion holes are evenly opened in a ring along the upper surface of the pressure head. Each spiral diversion hole has a tangential spiral structure. When the airflow passes through the spiral diversion holes, it generates a circumferential driving force to drive the pressure head to rotate. The outer diameter of the pressure head is smaller than the inner diameter of the frameless filter bag, and an annular air-permeable space is formed between the outer wall of the pressure head and the inner wall of the frameless filter bag, allowing the purified gas to flow upward to the clean air chamber under filtration conditions. The pulse airflow assembly also includes a main jet pipe, a branch jet pipe, and a connecting ring; Multiple sets of the main jet cleaning pipes are interconnected, and one end is connected to the valve assembly. The top of the Venturi tube is fixed to the nozzle of the jet cleaning branch pipe through a connecting ring. The bottom of the Venturi tube extends into the interior of the frameless filter bag to entrain the normal pressure air in the clean air chamber and amplify the total amount of dust removal airflow. The housing is equipped with an air inlet pipe and an exhaust pipe. The air inlet pipe is connected to the dust chamber to transport dust-laden exhaust gas, and the exhaust pipe is connected to the clean air chamber to discharge purified gas. The bottom of the box is equipped with an ash discharge pipe and an ash discharge assembly. The ash discharge assembly is installed at the lower end of the ash discharge pipe and is used to continuously discharge the germ rice bran dust that settles into the ash hopper of the box. The bottom of the chamber is fixed with support legs, and the top of the chamber can be detachably fitted with a top cover. The top cover is used to seal the upper part of the clean air chamber and facilitate the maintenance of internal components.

[0008] In summary, the present invention has the following main beneficial effects: 1. This invention uses a frameless filter bag in conjunction with a diversion and pressure-bearing component. After the pulsed airflow acts on the pressure head, it can simultaneously drive the frameless filter bag to complete a composite motion of axial stretching and bottom torsion. Axial stretching can tighten the entire frameless filter bag, and the tensile stress can tear the sticky oily dust cake of germ rice, solving the problems of airflow attenuation and dust accumulation in the lower half of the traditional fixed filter bag. The slight bottom torsion can change the deformation angle of the frameless filter bag, shaking off the ultra-fine rice bran dust embedded in the filter material fibers from all directions. The uniformity of dust removal from the top and bottom of the filter bag is greatly improved, and the operating resistance of the equipment is effectively reduced. 2. This invention relies on the air pressure of the pulsed airflow to drive the pressure head to move downward and the frameless bag to stretch and twist at the bottom. It does not require the addition of external electrically driven components such as motors, cylinders, and vibrators, thus reducing the ignition source of dust explosions. There is no additional transmission through-box structure, the box has good sealing performance, and there is no problem of air leakage or dust leakage, which meets the requirements of explosion-proof and clean production in grain processing. 3. This invention uses a large-diameter central flow hole in the pressure head to allow most of the pulse airflow to pass through, ensuring the full-area reverse blowing effect of the entire frameless filter bag; a small amount of airflow forms a swirling driving force through the spiral diversion hole, and the main and secondary airflows do not conflict with each other. The reverse blowing airflow will not be blocked or weakened by the diversion pressure component, thus taking into account both pneumatic drive and pulse cleaning functions. Attached Figure Description

[0009] Figure 1 This is a cross-sectional view of the entire invention; Figure 2 This is a partial enlarged cross-sectional view of the present invention; Figure 3 For the present invention Figure 2 A sectional view; Figure 4 For the present invention Figure 3 Enlarged view of point A; Figure 5 For the present invention Figure 3 Enlarged view of point B; Figure 6 This is an enlarged cross-sectional view of the pressure-bearing component of the present invention; Figure 7 This is a schematic diagram of the overall structure of the present invention.

[0010] In the picture: 1. Box body; 2. Divider; 3. Bag filter assembly; 301. Elastic base plate; 302. Top fixing ring; 303. Frameless filter bag; 4. Elastic components; 401. Base; 402. Spring frame; 403. Ball bearing; 404. Guide cylinder; 405. Guide rod; 406. Flexible protective sleeve; 5. Diverting pressure-bearing assembly; 501. Pressure-bearing head; 502. Central flow hole; 503. Spiral diverting hole; 504. Connecting rod; 6. Bottom support frame; 7. Pulse airflow assembly; 701. Main jet pipe; 702. Branch jet pipe; 703. Connecting ring; 704. Venturi tube; 8. Air tank; 9. Valve assembly; 10. Ash discharge pipe; 11. Ash discharge assembly; 12. Intake pipe; 13. Exhaust pipe; 14. Outriggers; 15. Top cover. Detailed Implementation

[0011] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0012] The embodiments of the present invention will now be described.

[0013] Example A pulse bag filter for purifying germ rice processing dust, such as Figure 1-7 As shown, it includes a housing 1, a partition plate 2, a bag filter assembly 3, an elastic assembly 4, a diversion and pressure bearing assembly 5, a bottom support frame 6, a pulse airflow assembly 7, an air tank 8, a valve assembly 9, an ash discharge pipe 10, an ash discharge assembly 11, an air inlet pipe 12, an exhaust pipe 13, support legs 14, and a top cover 15.

[0014] The enclosure 1 is a closed cabinet structure. Multiple support legs 14 are fixedly installed at the bottom of the enclosure 1, which support the entire equipment for placement. A top cover 15 is detachably installed on the top of the enclosure 1. After removing the top cover 15, the internal components of the upper clean air chamber of the enclosure 1 can be inspected and replaced. The side walls of the enclosure 1 are respectively connected to the air inlet pipe 12 and the exhaust pipe 13. The ash discharge pipe 10 is installed at the ash hopper position at the bottom of the enclosure 1, and the ash discharge assembly 11 is installed at the lower end of the ash discharge pipe 10.

[0015] The partition plate 2 is horizontally fixed in the middle of the inner cavity of the box 1. The partition plate 2 completely divides the internal space of the box 1 into two independent cavities: the upper clean air chamber and the lower dust chamber. The air inlet pipe 12 is connected to the dust chamber. The germ rice dust-containing waste gas generated in the rice milling and polishing process is sent into the dust chamber through the air inlet pipe 12. The exhaust pipe 13 is connected to the clean air chamber. The filtered and purified clean air is discharged outward from the exhaust pipe 13.

[0016] The clean air chamber is equipped with a pulse airflow assembly 7, an air tank 8, and a valve assembly 9. The air tank 8 stores high-pressure compressed air, and the outlet of the air tank 8 is connected to the valve assembly 9. The outlet of the valve assembly 9 is connected to the pulse airflow assembly 7. The pulse airflow assembly 7 completely includes a main jet pipe 701, a branch jet pipe 702, a connecting ring 703, and a venturi tube 704. Multiple main jet pipes 701 are interconnected to form a main air path. Each main jet pipe 701 branches downwards into multiple branch jet pipes 702. The bottom end of a single branch jet pipe 702 is sealed and connected to the upper end of the venturi tube 704 through the connecting ring 703. The venturi tube 704 is fixed vertically through the reserved opening in the partition plate 2. The top of the venturi tube 704 is connected to the branch jet pipe 702, and the bottom of the venturi tube 704 extends into the dust chamber. When the high-pressure airflow is injected from the top of the venturi tube 704, a negative pressure is generated, which automatically draws in the normal pressure air in the clean air chamber for mixing, thereby increasing the total flow rate of the dust removal airflow.

[0017] A bottom support frame 6 is fixedly installed in the lower space of the dust chamber. Multiple sets of elastic components 4 are evenly arranged on the bottom support frame 6. Each set of elastic components 4 includes a base 401, a spring frame 402, ball bearings 403, a guide cylinder 404, a guide rod 405, and a flexible protective sleeve 406. The base 401 is locked to the surface of the bottom support frame 6. The guide cylinder 404 is fixed above the base 401. The lower end of the guide rod 405 is slidably inserted into the inside of the guide cylinder 404, and the upper end of the guide rod 405 extends upward. The spring frame 402 is fitted on the outside of the guide cylinder 404 and the guide rod 405. The entire exterior of the spring frame 402 is covered by the flexible protective sleeve 406. The flexible protective sleeve 406 prevents dust from accumulating on the surface of the spring frame 402 and causing jamming. Multiple ball bearings 403 are evenly arranged in a ring at the upper end of the spring frame 402.

[0018] Each set of elastic components 4 is equipped with a set of bag filter components 3. The bag filter component 3 consists of three parts: an elastic base plate 301, a top fixing ring 302, and a frameless filter bag 303. The upper end of the frameless filter bag 303 is sealed and locked at the opening of the partition plate 2 by the top fixing ring 302. The frameless filter bag 303 is arranged vertically downward and directly facing the venturi tube 704 below. The lower end of the frameless filter bag 303 is completely fixed to the upper surface of the elastic base plate 301. The top of the guide rod 405 is fixedly connected to the bottom surface of the elastic base plate 301. The bottom surface of the elastic base plate 301 is pressed on the spring frame 402 and the ball bearing 403. The total length of the raw material of the frameless filter bag 303 is greater than the actual hanging length after assembly. After assembly, the bag body naturally forms multiple layers of pleats. The pleat structure reserves the deformation space for the frameless filter bag 303 to stretch downward axially. In the standby state of the equipment, the spring frame 402 is kept in a slightly compressed energy storage state by the gravity of the bag filter component 3 and the diversion pressure bearing component 5.

[0019] Each set of frameless filter bags 303 has a flow-diverting pressure-bearing assembly 5 installed at the upper part of its inner cavity and directly below the venturi tube 704. The flow-diverting pressure-bearing assembly 5 includes a pressure head 501, a central flow hole 502, a spiral flow-diverting hole 503, and a connecting rod 504. The pressure head 501 has a disc-like structure, and its outer diameter is smaller than the inner diameter of the frameless filter bag 303. An annular gap is formed between the outer wall of the pressure head 501 and the inner wall of the frameless filter bag 303. Under filtration conditions, purified air can flow upward into the venturi tube 704 through the annular gap. 04; A central flow hole 502 is vertically opened in the center of the pressure head 501, which runs through the upper and lower end faces. Multiple spiral diversion holes 503 are evenly opened in a ring around the central flow hole 502 on the upper end face of the pressure head 501. Each spiral diversion hole 503 is a tangential spiral through-hole. A connecting rod 504 is vertically fixed downward at the center of the bottom surface of the pressure head 501. The bottom end of the connecting rod 504 extends downward and is rigidly connected to the center of the elastic base plate 301. The pressure head 501, the connecting rod 504, and the elastic base plate 301 form a synchronous linkage whole.

[0020] The working principle of this invention is as follows: This device has multiple sets of bag filter assemblies 3 evenly arranged and installed inside the housing 1. The bag filter assembly 3 is composed of a frameless bag 303, an elastic bottom plate 301 and a top fixing ring 302. The top and bottom of the frameless bag 303 are fixedly connected to the top fixing ring 302 and the elastic bottom plate 301, respectively. Among them, the installation length of the frameless cloth bag 303 is less than the length of its own bag body. That is to say, in the initial state, after the frameless cloth bag 303 is installed, its bag body will have a certain amount of wrinkles, leaving room for the axial stretching of the frameless cloth bag 303 in the future. The top fixing ring 302 is fixed to the partition plate 2, and the elastic bottom plate 301 is fixed to the bottom support frame 6 through the elastic component 4. The spring frame 402 of the elastic component 4 is initially connected in a compressed state. This compressed state is only caused by the sum of the gravity of the diversion pressure bearing component 5, the frameless bag 303, and the elastic bottom plate 301. The partition plate 2 is located inside the box 1, dividing the inside of the box 1 into a clean air chamber and a dust chamber. The bag filter assembly 3 is located in the dust chamber, and the top opening of the frameless bag 303 of the bag filter assembly 3 is connected to the clean air chamber. When purifying the dust generated during the processing of germ rice, the dust is transported to the dust chamber inside the box 1 through the air inlet pipe 12 by an external exhaust fan. The dust is blocked by the frameless filter bag 303, and the clean gas passes through the frameless filter bag 303 and enters the clean air chamber, and then is discharged through the exhaust pipe 13. After the device has been running for a certain period of time, a lot of dust has accumulated on the outer surface of the frameless filter bag 303. At this time, the valve assembly 9 is activated, and the valve assembly 9 sprays the compressed gas in the air tank 8 into the filter bag 3 through the pulse airflow assembly 7. Specifically, the pulsed airflow passes through the main jet pipe 701 and the branch jet pipe 702 in sequence and blows into the venturi tube 704. When the high-speed pulsed airflow enters the throat from the venturi tube 704, a negative pressure is generated, which draws in a large amount of normal pressure air from the clean air chamber and rushes into the frameless cloth bag 303. When the high-speed pulsed airflow is blown into the interior of the frameless filter bag 303, the high-speed pulsed airflow will be ejected from the inside to the outside of the frameless filter bag 303, thereby peeling off the dust attached to the outer wall of the frameless filter bag 303. At the same time, when the high-speed pulsed airflow is sprayed onto the frameless fabric bag 303, a portion of the high-speed pulsed airflow will act on the pressure head 501 of the diversion pressure bearing component 5. The pressure head 501 moves downward after being subjected to the gas pressure, and the airflow acts on the upper end face of the pressure head 501 to form a gas pressure load. Since the bottom of the pressure head 501 is fixedly connected to the elastic base plate 301 through the connecting rod 504, the pressure head 501 overcomes the spring frame 402 of the elastic component 4 through the connecting rod 504 and the elastic base plate 301. At this time, the pressure head 501 will be subjected to air pressure load, which will drive the elastic base plate 301 to move downward. The downward movement of the elastic base plate 301 will drive the frameless bag 303 to be stretched axially. The frameless bag 303 will be stretched and tightened as a whole, and the tough germ rice dust on the outer wall will crack and peel off due to tensile stress. The pressure head 501 has a central flow hole 502 in the center, through which most of the dust removal pulse airflow passes. The pulse airflow passes directly through the central flow hole 502 and penetrates the entire frameless filter bag 303 downwards, forming a full-area reverse pulse wind that penetrates the frameless filter bag 303, peels off the oily fine dust that is attached to and embedded in the filter cloth, and realizes standard pulse backflushing. At the same time, a portion of the airflow will also flow from multiple sets of spiral diversion holes 503 opened on the upper edge of the pressure head 501. The spiral diversion holes 503 are spirally opened inside the pressure head 501. When the airflow enters the spiral diversion holes 503, it will drive the pressure head 501 to rotate at a certain angle under the action of the airflow. This will drive the elastic bottom plate 301 to rotate at a certain angle through the connecting rod 504. Thus, the elastic bottom plate 301 can also drive the bottom of the frameless bag 303 to rotate at a certain angle to a certain extent. In general, after the diversion pressure bearing component 5 is subjected to airflow load, the elastic base plate 301 will drive the frameless bag 303 to undergo axial stretching and angular rotation, generating corresponding motion on the frameless bag 303, thereby greatly improving the back-blowing effect of the frameless bag 303 during the pulse back-blowing process. Furthermore, the pressure head 501 is located directly below the venturi tube 704. At the same time, after the pulse airflow passes through the venturi tube 704, a large amount of gas is introduced. Even if the pulse airflow drives the diversion pressure assembly 5 downward, the remaining pulse airflow can still achieve full-area backflushing of the frameless bag 303. Furthermore, multiple sets of ball bearings 403 are distributed in a ring between the top of the spring frame 402 and the elastic base plate 301 to ensure smooth angular rotation of the elastic base plate 301. At the same time, a flexible protective sleeve 406 is fixed on the outside of the spring frame 402 to prevent dust from affecting the spring frame 402.

[0021] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the invention and are not intended to limit it. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the invention, but such modifications, substitutions, and variations are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A pulse bag filter for purifying germ rice processing dust, characterized in that: It includes a housing (1), a partition plate (2), a bag filter assembly (3), an elastic assembly (4), a diversion pressure bearing assembly (5), a bottom support frame (6), a pulse airflow assembly (7), an air tank (8), and a valve assembly (9); The partition plate (2) is located inside the box (1) and divides the inside of the box (1) into a clean air chamber and a dust chamber; the air bag (8) is connected to the pulse airflow assembly (7) through the valve assembly (9), and the pulse airflow assembly (7) is arranged in the clean air chamber and is equipped with a venturi tube (704). The bottom support frame (6) is fixedly installed at the bottom of the dust chamber, and the elastic component (4) is assembled on the bottom support frame (6); The bag filter assembly (3) includes a top fixing ring (302), a frameless bag (303), and an elastic base plate (301). The upper end of the frameless bag (303) is fixed to the partition plate (2) by the top fixing ring (302) and below the corresponding venturi tube (704). The lower end of the frameless bag (303) is fixed to the elastic base plate (301). The elastic base plate (301) is supported on the elastic assembly (4). The diversion pressure bearing assembly (5) is arranged below the venturi tube (704) and inside the frameless bag (303). The diversion pressure bearing assembly (5) includes a pressure bearing head (501), a central flow hole (502), a spiral diversion hole (503), and a connecting rod (504). The pressure bearing head (501) is rigidly connected to the elastic base plate (301) through the connecting rod (504). The pressure head (501) receives the pulsed airflow output from the venturi tube (704), and drives the elastic base plate (301) to move down by airflow pressure and drives the frameless filter bag (303) to stretch axially; the spiral diversion hole (503) diverts the airflow to generate tangential thrust to drive the pressure head (501) to twist, and simultaneously drives the bottom of the frameless filter bag (303) to rotate; the central flow hole (502) passes through the upper and lower end faces of the pressure head (501), allowing most of the pulsed airflow to pass through to achieve full-area reverse blowing of the filter bag.

2. The pulse bag filter for purifying germ rice processing dust according to claim 1, characterized in that: The elastic component (4) includes a base (401), a spring frame (402), a ball bearing (403), a guide cylinder (404), a guide rod (405), and a flexible protective sleeve (406). The base (401) is fixed to the bottom support frame (6). The guide rod (405) and the guide cylinder (404) slide together to achieve vertical guidance and circumferential rotation. The spring frame (402) is compressed and then rebounds after being depressurized. The upper end of the spring frame (402) and the elastic base plate (301) are arranged in a ring with ball bearings (403) to reduce rotational friction. The flexible protective sleeve (406) covers the outside of the spring frame (402) to provide dust protection.

3. The pulse bag filter for purifying germ rice processing dust according to claim 2, characterized in that: The guide rod (405) is vertically fixed to the lower end of the elastic base plate (301), and the guide cylinder (404) is fixedly installed on the base (401). The guide rod (405) is slidably inserted into the inside of the guide cylinder (404).

4. The pulse bag filter for purifying germ rice processing dust according to claim 1, characterized in that: The finished length of the frameless cloth bag (303) after assembly is less than the total length of the bag body itself, and the bag body naturally folds to form a deformation allowance that can be stretched downwards.

5. The pulse bag filter for purifying germ rice processing dust according to claim 1, characterized in that: The spiral diversion holes (503) are evenly opened in a ring along the upper end face of the pressure head (501). Each spiral diversion hole (503) has a tangential spiral structure. When the airflow passes through the spiral diversion holes (503), it forms a circumferential driving force to drive the pressure head (501) to rotate.

6. The pulse bag filter for purifying germ rice processing dust according to claim 1, characterized in that: The pulse airflow assembly (7) also includes a main jet pipe (701), a branch jet pipe (702), and a connecting ring (703). Multiple sets of the main blowing pipes (701) are interconnected, and one end is connected to the valve assembly (9). The top of the venturi tube (704) is fixedly connected to the nozzle of the blowing branch pipe (702) through the connecting ring (703). The bottom of the venturi tube (704) extends into the frameless filter bag (303) to entrain the atmospheric pressure air in the clean air chamber and amplify the total amount of dust removal airflow.

7. The pulse bag filter for purifying germ rice processing dust according to claim 1, characterized in that: The outer diameter of the pressure head (501) is smaller than the inner diameter of the frameless filter bag (303). An annular air-permeable space is formed between the outer wall of the pressure head (501) and the inner wall of the frameless filter bag (303) to allow the purified gas to flow upward to the clean air chamber under filtration conditions.

8. The pulse bag filter for purifying germ rice processing dust according to claim 1, characterized in that: The housing (1) is provided with an air inlet pipe (12) and an exhaust pipe (13). The air inlet pipe (12) is connected to the dust chamber for conveying dust-containing waste gas, and the exhaust pipe (13) is connected to the clean air chamber for discharging purified gas.

9. The pulse bag filter for purifying germ rice processing dust according to claim 1, characterized in that: The bottom of the box (1) is provided with a ash discharge pipe (10) and an ash discharge assembly (11). The ash discharge assembly (11) is installed at the lower end of the ash discharge pipe (10) and is used to continuously discharge germ rice bran dust that settles into the ash hopper of the box.

10. The pulse bag filter for purifying germ rice processing dust according to claim 1, characterized in that: The bottom of the box (1) is fixed with a support leg (14), and the top of the box (1) is detachably fitted with a top cover (15). The top cover (15) is used to seal the upper part of the clean air chamber and facilitate the maintenance of internal components.

Images