Linkage dust removal device for preventing dust explosion

Abstract

The utility model discloses a linkage dust removal device for preventing dust explosion. The linkage dust removal device comprises a rack, a dust collection assembly, a shelling assembly and an explosion-proof dust removal assembly. According to the utility model, the dust collection fan can be used for blowing air into the dust removal box body to form positive pressure, meanwhile, the air draft assembly continuously exhausts air from the dust removal box body to form negative pressure, and positive and negative pressure linked turbulent flow is formed in the dust removal box body, so that dust-containing air can stably flow and is prevented from being adhered to a filter bag again, and the replacement frequency of the filter bag is reduced; light impurities such as rice hulls in grains can be rapidly separated through the dust collection assembly and the hulling assembly, dust gas purification is achieved through the dust removal assembly, and meanwhile the impurity separation and dust removal functions are achieved. The explosion disc is arranged on the dust removal box body, explosion can be carried out at the specified temperature and pressure, the pressure in the box body can be rapidly released, the dust removal box body is protected against damage, and the explosion-proof dust removal box has the advantages of being simple in structure, free of leakage, high in release capacity and the like.

Description

Technical Field

[0001] This utility model relates to the field of grain dust removal and explosion prevention, and in particular to a linkage dust removal device for preventing dust explosions. Background Technology

[0002] During the harvesting, transportation, processing, and storage of grains, various impurities often become mixed in due to the influence of various environmental factors. Inorganic impurities in grains include dust, mud, sand, clods of mud, stones, bricks and tiles, coal slag, glass shards, and metal objects; organic impurities include plant roots, stems, leaves, shells, and weed seeds. Impurities pose a significant threat to grain quality and safe production. Therefore, grains need to be screened and impurities removed before storage. The screening process using grain screening machines generates a large amount of dust and impurities. The dust-laden gas generated in this process needs to be purified by dust removal equipment before being released into the environment to prevent pollution.

[0003] A dust explosion occurs when suspended dust particles in the air come into full contact with oxygen in the air, undergoing an instantaneous oxidation reaction under specific conditions. This reaction releases a large amount of heat, resulting in high temperature and high pressure. In grain dust removal, a spark entering the dust collector can easily ignite the dust inside, leading to an explosion. Therefore, to improve the safety of grain screening and dust removal, some dust collectors are equipped with explosion-proof structures. Typical dust collector filter cartridges have a pulse-jet cleaning system at the top. When the filter cartridges or bags accumulate enough dust to move, a pulse valve is opened to blow it out. However, this method is not very efficient, and dust floats in the air, re-adhering to the filter cartridges or bags, affecting the cleaning effect. Furthermore, there is currently no integrated dust collection system on the market that can effectively prevent dust explosions while simultaneously filtering and screening impurities in grain. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the defects of the prior art and provide a linkage dust removal device to prevent dust explosions.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] This utility model discloses a linked dust removal device for preventing dust explosions, comprising a frame, with a dust collection assembly fixedly installed on one side of the frame. The dust collection assembly includes a dust collection box fixed to the frame and a dust collection fan installed above the dust collection box. A shell removal assembly is connected to the outlet end of the dust collection fan. The shell removal assembly includes a settling tank communicating with the dust collection fan, a shell removal pipe communicating with the bottom of the settling tank, and a shell discharge mechanism disposed at the bottom of the shell removal pipe. An explosion-proof dust removal assembly is connected to one side of the settling tank via a pipe. The explosion-proof dust removal assembly includes components connected to the settling tank... The dust collector is a connected chamber with a rupture disc connected to one side. A partition is fixedly connected to the middle of the inner cavity of the dust collector, dividing the inner cavity into a clean air chamber and a filter chamber. Filter bags are movably connected to the partition. Several blowpipes are arranged above the filter bags, and several air nozzles are fixed at the bottom of the blowpipes. A solenoid valve is connected to one end of each blowpipe, and a compressed air cylinder is connected below the solenoid valve. Exhaust assemblies are connected to both sides of the clean air chamber. Several dust discharge hoppers are connected to the bottom of the filter chamber, and observation windows are opened on the side walls of the dust discharge hoppers.

[0007] As a preferred technical solution of this utility model, the dust collection box is provided with a dust collection inlet on one side, the grain inlet is connected to the outlet of the grain screening machine, the bottom of the dust collection box is provided with a grain outlet for discharging clean grain, the top of the dust collection box is provided with a dust outlet, and the dust outlet is connected to the inlet end of the bottom of the dust collection fan for extracting and separating light impurities in the grain.

[0008] As a preferred embodiment of this utility model, the shell discharge mechanism includes a shell removal motor, a spiral pipe, and a spiral push rod. The shell removal motor is fixed above the frame. The upper part of the spiral pipe is connected to the bottom of the shell removal tube. The spiral push rod is disposed inside the spiral pipe and coaxially arranged with it. One end of the spiral pipe is provided with a shell impurity outlet. The shell removal motor is connected to one end of the spiral push rod via a belt to drive the spiral push rod to discharge light impurities in the spiral pipe.

[0009] As a preferred embodiment of this utility model, the rupture disc is square and is fixed to the side wall of the dust collector by bolts. The side wall of the dust collector is provided with a square vent that matches the size of the rupture disc, and the square vent is connected to the filter chamber.

[0010] As a preferred embodiment of this utility model, the observation window is circular, and a circular observation hole matching the size of the observation window is provided on the side wall of the dust hopper, and the observation window is connected to the inner cavity of the dust hopper.

[0011] As a preferred technical solution of this utility model, the exhaust assembly includes an exhaust motor, an exhaust fan, an exhaust pipe, and an exhaust box fixed on the frame. The exhaust fan is connected to the output end of the exhaust motor. The exhaust box is installed above the exhaust fan and connected to its top. The top of the exhaust box is provided with an active outlet for discharging purified gas. The upper end of the exhaust pipe is connected to the side of the clean air chamber, and the lower end of the exhaust pipe is connected to the inlet of the exhaust fan.

[0012] As a preferred embodiment of this utility model, the solenoid valve is a pulse solenoid valve, used to control the compressed air cylinder to supply compressed air to the blow pipe at regular intervals.

[0013] As a preferred embodiment of this invention, each of the jet nozzles is positioned directly above the filter bag and is used to blow air into the filter bag to shake off dust adhering to the outer surface of the filter bag.

[0014] As a preferred embodiment of this utility model, the outlet on the side of the sedimentation tank is higher than the inlet on the side wall of the dust removal box, and the pipe connecting the outlet and the inlet is Z-shaped.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] 1. A dust collection fan can be used to blow air into the dust collection box to create positive pressure, while the exhaust component continuously draws air from the dust collection box to create negative pressure. This creates a turbulent flow of positive and negative pressure inside the dust collection box, which allows the dust-laden gas to flow stably. This prevents dust from flying away when the filter bags are blown, avoids re-adhering to the filter bags, improves the efficiency of the filter bags, and reduces the frequency of filter bag replacement.

[0017] 2. The dust collection and dehulling components can quickly separate light impurities such as rice husks from grains, and the dust removal components can purify dust and gas, thus achieving the functions of impurity separation and dust removal.

[0018] 3. By installing rupture discs on the dust collector housing, the discs can burst under specified temperature and pressure conditions, quickly releasing the pressure inside the housing and protecting it from damage. This design has the advantages of simple structure, no leakage, and strong release capacity. Attached Figure Description

[0019] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is the front view of this utility model;

[0022] Figure 3 This is a side view of the present invention;

[0023] Figure 4 This is a top view of the present invention;

[0024] Figure 5 This is a cross-sectional structural diagram of the present invention;

[0025] In the diagram: 1. Frame; 2. Dust collection assembly; 3. Dehulling assembly; 4. Explosion-proof dust removal assembly; 5. Exhaust assembly; 6. Dust hopper; 21. Dust collection box; 22. Dust collection fan; 23. Grain inlet; 24. Grain outlet; 25. Dust outlet; 31. Sedimentation box; 32. Dehulling pipe; 33. Discharge mechanism; 34. Dehulling motor; 35. Spiral pipe; 36. Spiral push rod; 41. Dust collector body; 42. Rupture disc; 43. Baffle; 44. Clean air chamber; 45. Filter chamber; 46. Filter bag; 47. Blowpipe; 48. Air jet head; 49. Solenoid valve; 50. Compressed air cylinder; 51. Exhaust motor; 52. Exhaust fan; 53. Exhaust pipe; 54. Air outlet box; 61. Observation window. Detailed Implementation

[0026] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0027] In the attached diagram, all identical reference numerals refer to the same components.

[0028] like Figure 1-5 As shown, this utility model provides a linkage dust removal device for preventing dust explosions, including a frame 1, a dust collection component 2 fixedly installed on one side of the upper part of the frame 1, the dust collection component 2 including a dust collection box 21 fixed on the frame 1 and a dust collection fan 22 installed above the dust collection box 21, the dust collection component 2 is used to extract light impurities such as rice husks and dust-containing gas from the grain to achieve the purpose of removing impurities;

[0029] The dust collection fan 22 is connected to a dehulling assembly 3 at its outlet end. The dehulling assembly 3 includes a sedimentation tank 31 connected to the dust collection fan 22, a dehulling pipe 32 connected to the bottom of the sedimentation tank 31, and a shell discharge mechanism 33 located at the bottom of the dehulling pipe 32. The dehulling assembly 3 is used to separate light impurities such as rice husks from the dust-laden gas so that dust removal can be carried out in subsequent processes.

[0030] An explosion-proof dust removal assembly 4 is connected to one side of the sedimentation tank 31 via a pipe. The explosion-proof dust removal assembly 4 includes a dust removal box 41 that communicates with the sedimentation tank 31. A rupture disc 42 is connected to one side of the dust removal box 41. A partition 43 is fixedly connected to the middle of the inner cavity of the dust removal box 41. The partition 43 divides the inner cavity of the dust removal box 41 into a clean air chamber 44 and a filter chamber 45. A filter bag 46 is movably connected to the partition 43. Several blow pipes 47 are arranged above the filter bags 46. Several jet nozzles 48 are fixed at the bottom of the blow pipes 47. A solenoid valve 49 is connected to one end of each blow pipe 47. A compressed air cylinder 50 is connected below the solenoid valve 49. The explosion-proof dust removal assembly 4 is used to filter dust-laden gas and prevent dust explosions.

[0031] Both sides of the clean air chamber 44 are connected to the exhaust assembly 5. The exhaust assembly 5 is used to create a local negative pressure in the clean air chamber 44, thereby improving the absorption efficiency of dust.

[0032] The bottom of the filter chamber 45 is connected to several dust discharge hoppers 6. The dust discharge hoppers 6 have observation windows 61 on their side walls. The dust discharge hoppers 6 are used to discharge dust and other impurities after filtration and sedimentation.

[0033] The method of using this utility model is as follows:

[0034] 1. Grain containing impurities such as rice husks enters the dust collection box 21 through the grain inlet 23. After being sucked up by the dust collection fan 22, the light impurities such as rice husks and dust-containing gas in the grain are separated and enter the sedimentation box 31. The clean grain after impurity removal is discharged from the grain outlet 24.

[0035] 2. After the light impurities such as rice husks and dust-containing gas are settled in the settling tank 31, the heavier impurities such as rice husks fall into the spiral pipe 35 and are discharged after passing through the dehulling pipe 32.

[0036] 3. Lighter dust-laden gas is blown into the dust collection box 41 by the airflow generated by the dust collection fan 22, while heavier dust settles and is discharged from the bottom of the dust discharge hopper 6. The gas purified by the filter bag 46 is discharged through the air outlet box 54.

[0037] For further details, please refer to the appendix. Figure 2 The dust collection box 21 has a grain inlet 23 on one side, which is connected to the outlet of the grain screening machine. The bottom of the dust collection box 21 has a grain outlet 24 for discharging clean grain. The top of the dust collection box 21 has a dust outlet 25, which is connected to the inlet end of the bottom of the dust collection fan 22 for extracting and separating dust and light impurities such as rice husks from the grain.

[0038] In this embodiment, after the dust and rice husks in the grain are sucked up by the dust collecting fan 22, the gas containing the impurities flows upward under the driving force of the wind and enters the sedimentation tank 31 connected to the dust collecting fan 22 for sedimentation.

[0039] For further details, please refer to the appendix. Figure 5 The shell discharge mechanism 33 includes a shell removal motor 34, a spiral pipe 35, and a spiral push rod 36. The base of the shell removal motor 34 is fixed on the frame 1. The upper part of the spiral pipe 35 is connected to the bottom of the shell removal pipe 32. The spiral push rod 36 is disposed inside the spiral pipe 35 and is coaxial with it. The spiral push rod 36 rotates around the center of the spiral pipe 35 under the drive of the shell removal motor 34. A shell impurity outlet is provided at one end of the spiral pipe 35. The shell removal motor 34 is connected to one end of the spiral push rod 36 through a belt and is used to drive the spiral push rod 36 to discharge light impurities such as shells from the spiral pipe 35.

[0040] In this embodiment, after the dust-laden gas is settled in the settling tank 31, the heavier impurities such as rice husks fall automatically down the dehulling pipe 32 into the spiral pipe 35 under the action of gravity. Under the action of the spiral push rod 36, they move towards the impurity outlet at one end of the spiral pipe 35 and are then discharged.

[0041] For further details, please refer to the appendix. Figure 2 The rupture disc 42 is square and is fixed to the side wall of the dust collector 41 by bolts. A square explosion vent matching the size of the rupture disc 42 is provided on the side wall of the dust collector 41, and the square explosion vent is connected to the filter chamber 45.

[0042] In this embodiment, the rupture disc 42 is fixed to the side wall of the dust collector 41 by bolts. When the temperature and pressure inside the filter chamber 45 rise abnormally, the rupture disc 42 can burst under the specified temperature and pressure to quickly release the pressure inside the chamber, thereby protecting the chamber from damage. It has the advantages of simple structure, no leakage, and strong release capacity.

[0043] For further details, please refer to the appendix. Figure 1 The observation window 61 is circular, and a circular observation hole matching the size of the observation window 61 is provided on the side wall of the dust hopper 6. The observation window 61 is connected to the inner cavity of the dust hopper 6. In this embodiment, a baffle is provided at the bottom of the dust hopper 6. The amount of dust accumulation in the dust hopper 6 can be observed through the observation window 61. When the dust accumulates to a certain amount, the bottom baffle can be opened to discharge the dust in a concentrated manner.

[0044] For further details, please refer to the appendix. Figure 3 The exhaust assembly 5 includes an exhaust motor 51, an exhaust fan 52, an exhaust pipe 53, and an exhaust box 54, all fixed to the frame 1. The exhaust fan 52 is connected to the output end of the exhaust motor 51. The exhaust box 54 is installed above the exhaust fan 52 and connected to its top. The top of the exhaust box 54 is provided with an active outlet for discharging purified gas. The upper end of the exhaust pipe 53 is connected to the side of the clean air chamber 44, and the lower end of the exhaust pipe 53 is connected to the inlet of the exhaust fan 52.

[0045] In this embodiment, the exhaust fan 52 continuously draws air, creating a negative pressure in a localized area of ​​the clean air chamber 44. Combined with the positive pressure generated locally in the filter chamber 45 by the dust collection fan 22, a turbulent flow with alternating positive and negative pressures is formed, allowing the dust-laden gas to flow stably from the filter chamber 45 to the clean air chamber 44. When the jet nozzle 48 blows the filter bag 46, it can effectively prevent dust from flying away and avoid re-adhering to the filter bag, thereby improving the efficiency of the filter bag and reducing the frequency of filter bag replacement.

[0046] For further details, please refer to the appendix. Figure 3 Solenoid valve 49 is a pulse solenoid valve, used to control the compressed air cylinder 50 to supply compressed air to the blow pipe 47 at regular intervals. The compressed air is rapidly released to the filter bag 46 through the jet head 48 in a pulse impact manner to achieve the effect of pulse dust removal.

[0047] For further details, please refer to the appendix. Figure 5 Each jet nozzle 48 is positioned directly above the filter bag 46 and is used to blow air into the filter bag 46, thereby driving the filter bag 46 to vibrate and shake off the dust adhering to the outer surface of the filter bag 46. This prevents dust from adhering to the filter bag and affecting the dust removal effect. The shaken-off dust settles into the dust discharge hopper 6 below under the action of gravity and is then discharged uniformly.

[0048] Furthermore, the outlet on the side of the sedimentation tank 31 is higher than the inlet on the side wall of the dust collector 41, and the pipe connecting the outlet and the inlet is Z-shaped.

[0049] In this embodiment, after being separated by the dust collecting fan 22, the light impurities such as rice husks enter the sedimentation tank 31. The heavier rice husks fall into the hulling pipe 32, while the lighter dust is blown into the filter chamber 45 by the dust collecting fan 22 along the Z-shaped pipe. During the flow of dust, it impacts the Z-shaped pipe wall, which helps to accelerate the settling of dust and fall into the dust discharge hopper 6 more quickly, thereby improving the dust removal efficiency.

[0050] This utility model is a linked dust removal device for preventing dust explosions. Through the linked design of the dust collection component, the dehulling component, and the explosion-proof dust removal component, it can remove light impurities from grains while simultaneously achieving dust removal. Furthermore, the structural design of the rupture disc prevents dust explosions, demonstrating good practicality.

[0051] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A dust removal device for preventing dust explosions, comprising a frame (1), characterized in that, A dust collection assembly (2) is fixedly installed on one side of the upper part of the frame (1). The dust collection assembly (2) includes a dust collection box (21) fixed on the frame (1) and a dust collection fan (22) installed above the dust collection box (21). A shell removal assembly (3) is connected to the outlet end of the dust collection fan (22). The shell removal assembly (3) includes a sedimentation box (31) communicating with the dust collection fan (22), a shell removal pipe (32) communicating with the bottom of the sedimentation box (31), and a shell discharge mechanism (33) disposed at the bottom of the shell removal pipe (32). An explosion-proof dust removal assembly (4) is connected to one side of the sedimentation box (31) through a pipe. The explosion-proof dust removal assembly (4) includes a dust removal box body (41) communicating with the sedimentation box (31). One side of the dust removal box body (41) is connected to... A rupture disc (42) is attached. A partition (43) is fixedly connected to the middle of the inner cavity of the dust collector (41). The partition (43) divides the inner cavity of the dust collector (41) into a clean air chamber (44) and a filter chamber (45). A filter bag (46) is movably connected to the partition (43). Several blowpipes (47) are arranged above the filter bag (46). Several jet nozzles (48) are fixed at the bottom of the blowpipes (47). A solenoid valve (49) is connected to one end of each blowpipe (47). A compressed air cylinder (50) is connected below the solenoid valve (49). A ventilation assembly (5) is connected to both sides of the clean air chamber (44). Several dust discharge hoppers (6) are connected to the bottom of the filter chamber (45). An observation window (61) is opened on the side wall of the dust discharge hopper (6).

2. The dust collection device for preventing dust explosions according to claim 1, characterized in that, The dust collection box (21) has a grain inlet (23) on one side, which is connected to the outlet of the grain screening machine. The bottom of the dust collection box (21) has a grain outlet (24) for discharging clean grain. The top of the dust collection box (21) has a dust outlet (25), which is connected to the inlet end of the bottom of the dust collection fan (22) for extracting and separating light impurities from the grain.

3. The linked dust removal device for preventing dust explosions according to claim 1, characterized in that, The shell discharge mechanism (33) includes a shell removal motor (34), a spiral pipe (35), and a spiral push rod (36). The shell removal motor (34) is fixed above the frame (1). The spiral pipe (35) is connected to the bottom of the shell removal tube (32). The spiral push rod (36) is located inside the spiral pipe (35) and is coaxial with it. One end of the spiral pipe (35) is provided with a shell impurity outlet. The shell removal motor (34) is connected to one end of the spiral push rod (36) via a belt and is used to drive the spiral push rod (36) to discharge light impurities in the spiral pipe (35).

4. The linked dust removal device for preventing dust explosions according to claim 1, characterized in that, The rupture disc (42) is square and is fixed to the side wall of the dust collector (41) by bolts. A square vent matching the size of the rupture disc (42) is provided on the side wall of the dust collector (41), and the square vent is connected to the filter chamber (45).

5. A linked dust removal device for preventing dust explosions according to claim 1, characterized in that, The observation window (61) is circular, and a circular observation hole matching the size of the observation window (61) is provided on the side wall of the dust hopper (6). The observation window (61) is connected to the inner cavity of the dust hopper (6).

6. A dust collection device for preventing dust explosions according to claim 1, characterized in that, The exhaust assembly (5) includes an exhaust motor (51), an exhaust fan (52), an exhaust pipe (53), and an exhaust box (54) fixed on the frame (1). The exhaust fan (52) is connected to the output end of the exhaust motor (51). The exhaust box (54) is installed above the exhaust fan (52) and connected to its top. The top of the exhaust box (54) is provided with an active outlet for discharging purified gas. The upper end of the exhaust pipe (53) is connected to the side of the clean air chamber (44), and the lower end of the exhaust pipe (53) is connected to the inlet of the exhaust fan (52).

7. A linked dust removal device for preventing dust explosions according to claim 1, characterized in that, The solenoid valve (49) is a pulse solenoid valve, used to control the compressed air cylinder (50) to supply compressed air to the blow pipe (47) at regular intervals.

8. A dust removal device for preventing dust explosions according to claim 1, characterized in that, Each of the jet nozzles (48) is positioned directly above the filter bag (46) for blowing air into the interior of the filter bag (46) to shake off dust adhering to the outer surface of the filter bag (46).

9. A dust removal device for preventing dust explosions according to claim 1, characterized in that, The outlet on the side of the sedimentation tank (31) is higher than the inlet on the side wall of the dust removal box (41), and the pipe connecting the outlet and the inlet is Z-shaped.

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