Automatic dust removal device of grain drying equipment

Abstract

The utility model discloses an automatic dust removal device of grain drying equipment, which comprises a drying tower main body, the drying tower main body is provided with an accommodating cavity, a hot air mechanism and an air duct, the drying tower main body is hermetically connected with a sealing box, the sealing box is provided with an air outlet, and the sealing box is in driving connection with a filter screen belt through a driven shaft and a driving shaft. The filter screen belt is provided with a plurality of through meshes, the lower portion of the sealing box is open and located below the filter screen belt, the sealing box is provided with a dust removal mechanism capable of removing dust on the side, close to the opening, of the filter screen belt, and a dust collection mechanism is arranged on the lower portion of the sealing box. The filter screen belt with a plurality of meshes receives dust-containing waste gas flowing out of the air duct, dust is intercepted in the meshes, the filter screen belt carrying the dust is driven by the driving shaft and the driven shaft to reach the position close to the opening of the sealing box, and the dust removal mechanism enables the dust on the filter screen belt to be downwards separated from the filter screen belt. Dust gathers towards the opening of the sealing box and the dust collecting mechanism under the action of gravity.

Description

Technical Field

[0001] This utility model relates to the technical field of grain drying equipment, specifically to an automatic dust removal device for grain drying equipment. Background Technology

[0002] When grain drying equipment dries grain, the exhaust gas contains dust and lint. Directly discharging this dusty exhaust gas not only harms the environment but also endangers the health of workers. Chinese utility model patent CN203220829U discloses a dust removal system for a grain dryer, which uses an exhaust fan to directionally transport dusty exhaust gas to a dust collection device, which collects the dust from the exhaust gas. However, the inventors discovered that in this dust removal system, after dust accumulates in the dust collection device, the high-speed exhaust gas from the exhaust fan disperses the dust, leaving some dust residue in the middle and end of the dust extraction pipe. When workers manually collect the dust from the dust collection device, the machine must be stopped for a period of time to allow the airborne dust to settle before the device is removed and cleaned, which is time-consuming and labor-intensive. There is an urgent need for an automatic dust removal device for grain drying equipment that can directionally collect dust and reduce the problem of dust settling and becoming airborne. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide an automatic dust removal device for grain drying equipment that can collect dust in a directional manner, remove dust continuously and without interruption, and reduce the situation of dust accumulating and flying.

[0004] To solve the above-mentioned technical problems, this utility model includes a drying tower body, which has a receiving cavity and a hot air mechanism for providing hot air. The drying tower body also has an air duct for receiving hot air from the hot air mechanism and guiding the hot air in and out of the receiving cavity. Its structural features are: the drying tower body is sealed with a sealed box that receives the hot air flowing out of the air duct; the sealed box has an air outlet that connects the interior of the sealed box to the external environment; the sealed box is driven by several rotating driven shafts and one rotating drive shaft to connect a filter belt that receives hot air containing dust flowing out of the air duct; the filter belt has several through-mesh openings; the sealed box has an opening at the bottom, located below the filter belt; the sealed box has a dust removal mechanism that removes dust from the side of the filter belt near the opening; and the lower part of the sealed box has a dust collection mechanism for collecting falling dust.

[0005] With the above structure, the hot air mechanism sends hot air into the receiving cavity through the air duct. The grain comes into contact with the hot air as it falls into the receiving cavity, thus completing the drying process. The dust-laden hot air, after contacting the grain, is discharged from the air duct as dust-laden exhaust gas. A filter belt with several mesh openings catches the dust-laden exhaust gas flowing out of the air duct, effectively trapping dust within the mesh. Driven by the drive shaft, the dust-laden portion of the filter belt rotates to the opening near the bottom of the sealed box. The dust removal mechanism's air knife causes the dust on the filter belt to detach downwards. Under gravity, the dust gathers towards the opening of the sealed box and the dust collection mechanism. The filter belt reduces the distance the dust travels on its own, enabling not only directional dust collection but also reducing the likelihood of dust settling and becoming airborne. The exhaust gas with reduced dust content passes through the filter belt and flows out from the outlet.

[0006] Furthermore, at least one set of the air duct and sealing box is installed on the main body of the drying tower.

[0007] Furthermore, each sealed box is equipped with at least three driven shafts, and the three driven shafts and one driving shaft make the filter belt arranged in a rectangular shape inside the sealed box.

[0008] Furthermore, at least one sealed box is equipped with a mesh belt slide sealing plate and a mesh belt gap sealing plate located on the left and right sides of the filter mesh belt. The top of the mesh belt slide sealing plate is connected to the driven shaft at the top of the filter mesh belt inside the sealed box and bends past the driven shaft by a set length. The bottom of the mesh belt slide sealing plate is connected to the bottom drive shaft and bends past the bottom driven shaft. The top of the mesh belt gap sealing plate can abut against the outer surface of the bottom and top of the filter mesh belt and can be connected to the upper and lower parts inside the sealed box to prevent air leakage.

[0009] Furthermore, the dust removal mechanism is an air knife with the same width as the filter belt.

[0010] Furthermore, the dust collection mechanism is a star-shaped unloader or a dust collection bag.

[0011] By incorporating at least three driven shafts and one driving shaft, the driving and supporting functions of the filter belt are ensured. The filter belt slide sealing plate and the filter belt gap sealing plate, by clamping, straightening, and sealing the filter belt on both sides, reduce the leakage of dust-laden exhaust gas from the gap between the filter belt and the receiving cavity to the air outlet. Using an air knife as a dust removal mechanism efficiently removes dust from the filter belt, and the filter belt itself reduces the turbulence caused by the air knife, resulting in good dust removal and ensuring effective dust deposition. Using a rotary valve or dust collection bag as the dust collection mechanism allows for convenient and directional collection of the deposited dust after a certain amount of dust has been collected. In summary, this invention has the advantages of reasonable structure and ease of use. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure from the front view of this utility model;

[0013] Figure 2 yes Figure 1 Enlarged view of a portion of area A in the middle;

[0014] Figure 3 yes Figure 1 A structural schematic diagram of the main body of the drying tower, the mesh belt slide sealing plate, and the filter mesh belt viewed in cross section along the BB direction;

[0015] Figure 4 This is a schematic diagram of another embodiment of the present invention;

[0016] In the diagram: 1. Drying tower body; 11. Receiving cavity; 12. Air duct; 13. Sealing box; 131. Air outlet; 132. Mesh belt slide sealing plate; 133. Mesh belt gap sealing plate; 2. Hot air mechanism; 21. Fan; 22. Heater; 3. Driven shaft; 4. Driven shaft; 5. Filter mesh belt; 6. Dust removal mechanism; 7. Dust collection mechanism. Detailed Implementation

[0017] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention. For ease of understanding, Figure 1 The top is the upper side of this utility model. Figure 1 The bottom is the lower side of this utility model. Figure 1 The left side is the left side of this utility model. Figure 1 The right side is the right side of this utility model. Example 1

[0018] Reference Figures 1 to 3 The utility model includes a drying tower body 1, which has a receiving cavity 11. The drying tower body 1 is equipped with a hot air mechanism 2 that provides hot air. The drying tower body 1 has an air inlet connecting the external environment and the receiving cavity 11. The hot air mechanism 2 includes a fan 21 and a heater 22 disposed within the air inlet. The fan 21 provides air from the external environment, and the heater 22 heats the air from the fan 21 to a temperature suitable for drying grain. The drying tower body 1 is equipped with an air duct 12 for receiving the hot air from the hot air mechanism 2 and guiding the hot air in and out of the receiving cavity 11. The air duct 12 can be made of multiple layers of staggered ventilation corner boxes. Ventilation corner boxes are common components in the drying tower field, and their structural principles are well known to those skilled in the art and will not be described in detail here.

[0019] Reference Figures 1 to 3 The drying tower body 1 is sealed with a sealed box 13 that can receive hot air flowing from the air duct 12. The sealed box 13 is provided with an air outlet 131 that connects the interior of the sealed box 13 with the external environment. The sealed box 13 is driven by several rotating driven shafts 3 and one rotating drive shaft 4 to connect a filter belt 5 that can receive hot air containing dust from the air duct 12. The filter belt 5 has several through-mesh holes. The drive shaft 4 can be driven to rotate by a motor. The driven shafts 3 and drive shaft 4 can be provided with sprockets, and the filter belt 5 can be provided with a chain that matches the sprockets. The sprocket and chain mechanism ensures reliable driving of the filter belt 5. Preferably, each sealed box 13 is provided with at least three driven shafts 3. The three driven shafts 3 and one drive shaft 4 make the filter belt 5 rectangularly arranged in the sealed box 13 and able to circulate the filter belt 5. The sealed box 13 has an opening at the bottom, located below the filter belt 5. The bottom of the sealed box 13 can be configured as a funnel to facilitate directional dust collection. At least one sealed box 13 has a belt slide sealing plate 132 and a belt gap sealing plate 133 located on the left and right sides of the filter belt 5. The top of the belt slide sealing plate 132 is connected to the driven shaft 3 at the top of the filter belt 5 inside the sealed box 13 and bends past the driven shaft 3 by a set length. The bottom of the belt slide sealing plate 132 is connected to the bottom drive shaft 4 and bends past the bottom driven shaft 3. The top of the belt gap sealing plate 133 can abut against the outer surface of the bottom and top of the filter belt 5 and can be connected to the upper and lower parts inside the sealed box 13 to prevent air leakage. The sealed box 13 is equipped with a dust removal mechanism 6 that can remove dust from the side of the filter belt 5 near the opening. The dust removal mechanism 6 has an air knife of the same width as the filter belt 5. The lower part of the sealed box 13 is provided with a dust collection mechanism 7 for collecting falling dust. The dust collection mechanism 7 can be a star-shaped unloader. At least one set of air duct 12 and sealed box 13 is provided on the main body of the drying tower 1. When multiple sets are provided, the driven shaft 3, the driving shaft 4, the filter belt 5, the dust removal mechanism 6, and the dust collection mechanism 7 are correspondingly arranged with the sealed box 13. Example 2

[0020] Reference Figure 4 Another embodiment is provided, with the basic structure being the same as the structure described above. Specifically, in this embodiment, the structure of the dust collection mechanism 7 is different; in this embodiment, the dust collection mechanism 7 is a dust collection bag. The dust collection bag, which serves as the dust collection mechanism 7, can be connected to the lower part of the opening of the sealed box 13 via clamps or ropes.

[0021] When this utility model is in use, the hot air mechanism 2 sends hot air into the receiving cavity 11 through the air duct 12, and the grain comes into contact with the hot air when it falls into the receiving cavity 11 to complete the drying. The dust-laden hot air, after contact with the grain, is discharged from the duct 12 as dust-laden exhaust gas. The filter belt 5 with several meshes receives the dust-laden exhaust gas flowing out of the duct 12. Due to the obstruction effect of the grain, the flow velocity of the dust-laden exhaust gas flowing out of the duct 12 is less than the flow velocity of the hot air flowing into the duct 12. The dust can be effectively intercepted in the mesh. Driven by the drive shaft 4 and the driven shaft 3, the dust-laden part of the filter belt 5 reaches the position near the opening of the sealed box 13. The dust removal mechanism 6 causes the dust on the filter belt 5 to fall downward and detach from the filter belt 5. Under the action of gravity, the dust gathers towards the opening of the sealed box 13 and the dust collection mechanism 7. The filter belt 5 reduces the distance that the dust moves on its own. It can not only collect the dust in a directional manner but also reduce the situation of dust flying after deposition. The exhaust gas with reduced dust content passes through the filter belt 5 and flows out from the outlet 131.

[0022] The automatic dust removal device for grain drying equipment provided by this utility model ensures the driving and supporting function of the filter belt by setting at least three driven shafts and one driving shaft. By setting the filter belt slide sealing plate and the filter belt gap sealing plate, the slide sealing plate clamps and seals the filter belt on both sides, reducing the leakage of dust-laden exhaust gas from the gap between the filter belt and the receiving cavity to the air outlet. Using an air knife as the dust removal mechanism, dust on the filter belt can be efficiently removed from the filter belt. The filter belt also reduces the turbulence of the removed dust caused by the air knife, resulting in good dust removal and ensuring the deposition of the removed dust. Using a star-shaped unloader or a dust collection bag as the dust collection mechanism, after a certain amount of dust is collected, the operator can conveniently and directionally collect the deposited dust by operating the dust collection mechanism. In summary, this utility model has the advantages of reasonable structure and convenient use.

[0023] The above description is merely an example and illustration of the structure of this utility model. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the structure of the utility model or exceed the scope defined by the claims of this patent, they should all fall within the protection scope of this utility model.

Claims

1. An automatic dust removal device for grain drying equipment, comprising a drying tower body (1), wherein the drying tower body (1) is provided with a receiving cavity (11), the drying tower body (1) is provided with a hot air mechanism (2) capable of providing hot air, and the drying tower body (1) is provided with an air duct (12) for receiving hot air from the hot air mechanism (2) and for guiding the hot air inflow and outflow from the receiving cavity (11), characterized in that: The drying tower body (1) is sealed with a sealed box (13) that can receive hot air flowing out from the air duct (12). The sealed box (13) is provided with an air outlet (131) that can connect the inside of the sealed box (13) with the external environment. The sealed box (13) is driven by several rotating driven shafts (3) and a rotating drive shaft (4) to connect a filter belt (5) that can receive hot air with dust flowing out from the air duct (12). The filter belt (5) has several through meshes. The sealed box (13) has an opening at the bottom and the opening is located below the filter belt (5). The sealed box (13) is provided with a dust removal mechanism (6) that can remove dust from the side of the filter belt (5) near the opening. The sealed box (13) is provided with a dust collection mechanism (7) at the bottom for collecting falling dust.

2. The automatic dust removal device for grain drying equipment according to claim 1, characterized in that: At least one set of the air duct (12) and the sealing box (13) is provided on the main body (1) of the drying tower.

3. The automatic dust removal device for grain drying equipment according to claim 2, characterized in that: Each sealed box (13) is provided with at least three driven shafts (3), and the three driven shafts (3) and one driving shaft (4) make the filter belt (5) rectangularly arranged in the sealed box (13) and able to circulate the filter belt (5).

4. The automatic dust removal device for grain drying equipment according to claim 1, characterized in that: At least one sealed box (13) is provided with a mesh belt slide sealing plate (132) and a mesh belt gap sealing plate (133) located on the left and right sides of the filter mesh belt (5). The top of the mesh belt slide sealing plate (132) is connected to the driven shaft (3) at the top of the filter mesh belt (5) inside the sealed box (13) and bends past the driven shaft (3) by a set length. The bottom of the mesh belt slide sealing plate (132) is connected to the bottom drive shaft (4) and bends past the bottom driven shaft (3). The top of the mesh belt gap sealing plate (133) can abut against the outer surface of the bottom and top of the filter mesh belt (5) and can be connected to the upper and lower parts inside the sealed box (13) to prevent air leakage.

5. The automatic dust removal device for grain drying equipment according to claim 1, characterized in that: The dust removal mechanism (6) is an air knife with the same width as the filter belt (5).

6. The automatic dust removal device for grain drying equipment according to any one of claims 1-5, characterized in that: The dust collection mechanism (7) is a star-shaped unloader or a dust collection bag.

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