Bag type dust removal device for modified starch production

Abstract

The utility model relates to the technical field of bag type dust removal, in particular to a bag type dust removal device for producing modified starch. According to the technical scheme, the dust removal device comprises a dust removal box, a fixing frame is installed at the position, close to the upper surface, in the dust removal box, a plurality of dust removal cloth bags are installed on the upper surface of the fixing frame in a rectangular array at equal intervals and penetrate through the fixing frame, and an air inlet pipe is connected to the position, close to the lower surface, of one side of the outer surface of the dust removal box; an air outlet pipe is connected to the side, deviating from the air inlet pipe, of the outer surface of the dust removal box and located above the fixing frame, and a plurality of triangular barrier strips are evenly arranged in the dust removal box and located between the air inlet pipe and the dust removal cloth bag. When the bag type dust remover is used for removing dust in modified starch production, large-particle dust and part of dust which are caked in dusty gas can be effectively removed before the dusty gas is contacted with the dust removal cloth bag, so that the dust removal load and abrasion of the dust removal cloth bag are reduced, the service life of the dust removal cloth bag is prolonged, and meanwhile, the dust removal efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of bag dust collection technology, specifically a bag dust collection device for modified starch production. Background Technology

[0002] Modified starch is a type of starch derivative obtained by modifying the molecular structure of natural starch through physical, chemical, or enzymatic treatments. This alters the gelatinization temperature, viscosity, film-forming properties, and stability of natural starch, enabling its wider application in numerous fields such as food, papermaking, textiles, and pharmaceuticals. During the production of modified starch, a large amount of starch dust is generated. Baghouse dust collection technology plays a crucial role in this process. Utilizing filter bags made of fibrous fabric, it separates and captures the starch dust generated during production from the airflow through principles of filtration, inertial impaction, and diffusion sedimentation. This purifies the exhaust air, ensuring air quality in the production environment, reducing the health hazards of dust to operators, and preventing environmental pollution caused by dust emissions. Furthermore, the recovered starch dust can be reused, improving production efficiency.

[0003] Currently, baghouse dust collectors used in modified starch production suffer from high dust loads due to the large amount of modified starch dust in the dust-laden gas. Furthermore, this dust agglomerates during transport due to moisture absorption, forming large particles. This leads to increased wear and tear on the filter bags, reducing their lifespan and dust collection efficiency. Therefore, we propose a baghouse dust collector for modified starch production. Utility Model Content

[0004] The purpose of this invention is to provide a bag filter dust collection device for modified starch production. When using a bag filter dust collector for modified starch production, it effectively removes large, agglomerated dust particles and some dust from the dust-laden gas before they come into contact with the filter bags. This reduces the dust collection load and wear on the filter bags, extends their service life, and improves dust collection efficiency. It solves the problem currently faced by bag filters used in modified starch production where the dust-laden gas contains a large amount of modified starch dust, which agglomerates during transport due to moisture absorption, forming large dust particles. This results in a heavy dust collection load on the filter bags, accelerated wear, and reduced service life and dust collection efficiency.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a bag filter for modified starch production, comprising a dust collection box, a fixed frame installed inside the dust collection box near the upper surface, a plurality of dust collection bags evenly arranged in a rectangular array on the upper surface of the fixed frame, the dust collection bags passing through the fixed frame, an air inlet pipe connected to one side of the outer surface of the dust collection box near the lower surface, an air outlet pipe connected to the side of the outer surface of the dust collection box opposite to the air inlet pipe, located above the fixed frame, a plurality of triangular baffles evenly arranged inside the dust collection box between the air inlet pipe and the dust collection bags, the two ends of the triangular baffles being connected to the two sides of the inner wall of the dust collection box respectively, a hydraulic cylinder installed on one side of the outer surface of the dust collection box, a moving plate connected to the output end of the hydraulic cylinder, and the triangular baffles passing through the moving plate.

[0006] Preferably, a cover is installed on the upper surface of the dust collection box, and the cover and the dust collection box are connected by bolts.

[0007] Preferably, a dust collection hopper is installed on the lower surface of the dust collection box, and a discharge valve is installed on the lower surface of the dust collection hopper.

[0008] Preferably, a pipe network is installed inside the dust collector box above the fixed frame. An air jet is connected to the lower surface of the pipe network above each dust collector bag. An electromagnetic pulse valve is connected to the outer surface of the pipe network. A compressed air pipe is connected to the end of the electromagnetic pulse valve. Both the compressed air pipe and the electromagnetic pulse valve are located outside the dust collector box.

[0009] Preferably, one end of the air inlet pipe located inside the dust collector is connected to an extension pipe, and both ends of the extension pipe are close to the inner wall of the dust collector. An air outlet is provided on the lower surface of the extension pipe.

[0010] Preferably, a scraper ring is sleeved on the outer surface of the extension tube, and the outer surface of the scraper ring is connected to the lower surface of the moving plate.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] 1. This utility model, by setting up a dust collection box, an inlet pipe, an outlet pipe, dust collection bags, triangular baffles, a hydraulic cylinder, and a moving plate, achieves the effect of effectively removing large particles of dust and some dust from the dust-laden gas before it comes into contact with the dust collection bags during the production of modified starch using a baghouse dust collector. This reduces the dust collection load and wear on the dust collection bags, extends their service life, and improves dust collection efficiency. The dust generated during the production of modified starch enters the dust collection box through the inlet pipe along with the air. In the dust-laden gas flow upwards, large dust particles that clump together lose kinetic energy and fall off when they collide with the triangular baffles, thus removing the large dust particles from the gas. At the same time, some of the dust particles in the gas also lose kinetic energy and fall off when they collide with the triangular baffles. The dust-laden gas that passes through the triangular baffles then comes into contact with the dust collector bag, and the dust collector bag filters out the remaining dust in the gas. The purified gas is discharged through the exhaust pipe, while the hydraulic cylinder drives the moving plate to scrape off the dust adhering to the outer surface of the triangular baffles.

[0013] 2. By setting up an extension pipe and an air outlet, when the dust-laden gas enters the dust collector, it diffuses inside the dust collector through the extension pipe and air outlet, thereby making the dust-laden gas evenly distributed inside the dust collector. This facilitates the uniform contact between the dust-laden gas and the triangular baffles and dust collector bags, improving dust removal efficiency.

[0014] 3. By setting a scraper ring, the dust adhering to the outer surface of the extension tube can be scraped off when the moving plate moves. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a partial main sectional view of the dust collector box of this utility model;

[0017] Figure 3 This is a partial side sectional view of the dust collector box of this utility model;

[0018] Figure 4 This utility model Figure 3 A magnified structural diagram of A in the diagram.

[0019] Reference numerals in the attached diagram: 1. Inlet pipe; 2. Dust collection box; 3. Compressed air pipe; 4. Electromagnetic pulse valve; 5. Box cover; 6. Outlet pipe; 7. Hydraulic cylinder; 8. Dust collection hopper; 9. Discharge valve; 10. Triangular baffle; 11. Pipeline; 12. Jet nozzle; 13. Fixing frame; 14. Dust collector bag; 15. Moving plate; 16. Extension pipe; 17. Scraper ring; 18. Air outlet. Detailed Implementation

[0020] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments. Example 1

[0021] like Figures 1-3 As shown, this utility model proposes a bag filter dust collector for modified starch production, comprising a dust collector box 2. The upper surface of the dust collector box 2 is open, and a cover 5 is installed on the upper surface of the dust collector box 2. The cover 5 and the dust collector box 2 are connected by bolts, facilitating the disassembly and assembly of the cover 5 for easy inspection and replacement of the internal components of the dust collector box 2. A fixing frame 13 is installed inside the dust collector box 2 near the upper surface. Several dust collector bags 14 are evenly spaced in a rectangular array on the upper surface of the fixing frame 13, and the dust collector bags 14 penetrate the fixing frame 13. An air inlet pipe 1 is connected to one side of the outer surface of the dust collector box 2 near the lower surface. Dust generated during modified starch production enters the dust collector 2 through the air inlet pipe 1. The dust-laden gas flows upward. An outlet pipe 6 is connected to the outer surface of the dust collector 2, located above the fixed frame 13, on the side opposite to the air inlet pipe 1. Several triangular baffles 10 are evenly arranged inside the dust collector 2 between the air inlet pipe 1 and the dust collector bag 14. The two ends of the triangular baffles 10 are connected to the two sides of the inner wall of the dust collector 2. The upper and lower triangular baffles 10 inside the dust collector 2 are staggered, so that the dust-laden gas can collide with the next triangular baffle 10 after passing through two adjacent triangular baffles 10.

[0022] A hydraulic cylinder 7 is installed on one side of the outer surface of the dust collector 2. The output end of the hydraulic cylinder 7 is connected to a moving plate 15, and a triangular baffle 10 passes through the moving plate 15. A dust collection hopper 8 is installed on the lower surface of the dust collector 2, and a discharge valve 9 is installed on the lower surface of the dust collection hopper 8. The filtered dust is collected through the dust collection hopper 8 and discharged through the discharge valve 9. A pipe network 11 is installed inside the dust collector 2 above the fixed frame 13. A jet nozzle 12 is connected to the lower surface of the pipe network 11 above each dust collector bag 14. An electromagnetic pulse valve 4 is connected to the outer surface of the pipe network 11. A compressed air pipe 3 is connected to the end of the electromagnetic pulse valve 4. Both the compressed air pipe 3 and the electromagnetic pulse valve 4 are located outside the dust collector 2. Compressed air is input into the compressed air pipe 3 and sprayed into the dust collector bag 14 through the electromagnetic pulse valve 4 and the jet nozzle 12 to back-blow the dust collector bag 14 to remove the dust adhering to the surface of the dust collector bag 14.

[0023] In use, the dust generated during the production of modified starch enters the dust collection box 2 through the air inlet pipe 1 along with the air. The dust-laden gas flows upward, and the large dust particles that clump together lose kinetic energy and fall off when they hit the triangular baffle 10, thus removing the large dust particles from the dust-laden gas. At the same time, some of the dust particles in the dust-laden gas also lose kinetic energy and fall off when they hit the triangular baffle 10. The dust-laden gas that passes through the triangular baffle 10 then comes into contact with the dust collection bag 14, and the remaining dust in the dust-laden gas is filtered out by the dust collection bag 14. The purified gas is discharged through the air outlet pipe 6, which can reduce the dust collection load and wear of the dust collection bag 14, extend the service life of the dust collection bag 14, and improve the dust collection efficiency. The hydraulic cylinder 7 drives the moving plate 15 to scrape off the dust adhering to the outer surface of the triangular baffle 10. Example 2

[0024] like Figures 1 to 4 As shown, the present invention proposes a bag dust collector for modified starch production. Compared with Embodiment 1, this embodiment further includes an air inlet pipe 1 located inside the dust collector 2 with one end connected to an extension pipe 16. The two ends of the extension pipe 16 are close to the inner walls of the dust collector 2. An air outlet 18 is provided on the lower surface of the extension pipe 16 and extends to both ends of the extension pipe 16. A scraper ring 17 is sleeved on the outer surface of the extension pipe 16 and the outer surface of the scraper ring 17 is connected to the lower surface of the moving plate 15. When the moving plate 15 moves, the dust adhering to the outer surface of the extension pipe 16 is scraped off by the scraper ring 17.

[0025] In this embodiment, the dust-laden gas diffuses inside the dust collector 2 through the extension pipe 16 and the air outlet 18, thereby making the dust-laden gas evenly distributed inside the dust collector 2. This facilitates the uniform contact of the dust-laden gas with the triangular baffle 10 and the dust collector bag 14, thus improving the dust removal efficiency.

[0026] The above specific embodiments are merely several preferred embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A bag filter device for the production of modified starch, comprising a filter housing (2), characterized in that: A fixed frame (13) is installed inside the dust collector (2) near the upper surface. Several dust collector bags (14) are installed in a rectangular array at equal intervals on the upper surface of the fixed frame (13), and the dust collector bags (14) pass through the fixed frame (13). An air inlet pipe (1) is connected to one side of the outer surface of the dust collector (2) near the lower surface. An air outlet pipe (6) is connected to the side of the outer surface of the dust collector (2) away from the air inlet pipe (1) above the fixed frame (13). Several triangular baffles (10) are evenly arranged inside the dust collector (2) between the air inlet pipe (1) and the dust collector bags (14), and the two ends of the triangular baffles (10) are respectively connected to the two sides of the inner wall of the dust collector (2). A hydraulic cylinder (7) is installed on one side of the outer surface of the dust collector (2). A moving plate (15) is connected to the output end of the hydraulic cylinder (7), and the triangular baffles (10) pass through the moving plate (15).

2. A baghouse for denatured starch production according to claim 1, characterized in that: The dust collector (2) is fitted with a cover (5) on its upper surface, and the cover (5) and the dust collector (2) are connected by bolts.

3. A baghouse for denatured starch production according to claim 1, characterized in that: The dust collection box (2) is equipped with a dust collection hopper (8) on its lower surface, and a discharge valve (9) is installed on the lower surface of the dust collection hopper (8).

4. A baghouse for denatured starch production as claimed in claim 1, wherein: Inside the dust collector (2), a pipe network (11) is installed above the fixed frame (13). A jet nozzle (12) is connected to the lower surface of the pipe network (11) above each dust collector bag (14). An electromagnetic pulse valve (4) is connected to the outer surface of the pipe network (11). A compressed air pipe (3) is connected to the end of the electromagnetic pulse valve (4). Both the compressed air pipe (3) and the electromagnetic pulse valve (4) are located outside the dust collector (2).

5. A baghouse for denatured starch production as claimed in claim 1, wherein: The air inlet pipe (1) is connected to an extension pipe (16) at one end inside the dust collector (2), and the two ends of the extension pipe (16) are close to the inner wall of the dust collector (2). An air outlet (18) is provided on the lower surface of the extension pipe (16).

6. A baghouse for denatured starch production according to claim 5, characterized in that: The outer surface of the extension tube (16) is fitted with a scraper ring (17), and the outer surface of the scraper ring (17) is connected to the lower surface of the moving plate (15).

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