Dust filtering device of grain elevator

Abstract

The dust filtering device of the grain elevator comprises a grain distributing box and a dust removing mechanism, a grain conveying mechanism is fixedly arranged at the top end of the grain distributing box, a first supporting frame is fixedly arranged on the periphery of the lower end of the grain distributing box, and a second vibration motor is fixedly arranged on one side of the grain distributing box. A volute fan is fixedly arranged on one side of the dust removal mechanism, a first vibration motor is fixedly arranged on the other side of the dust removal mechanism, a dust removal pipe is fixedly arranged at the position, close to the lower end of the first vibration motor, of the other side of the dust removal mechanism, a collection box is arranged at the bottom end of the dust removal mechanism, and second supporting frames are fixedly arranged on the periphery of the lower end of the dust removal mechanism. The dust removal mechanism comprises a shell. The grain distribution box has the beneficial effects that most dust of grains can be stripped in front of a dust removal system through the grain distribution box, the device is provided with a quick disassembly structure, the filter screen can be disassembled and assembled without tools, and daily cleaning and maintenance are facilitated.

Description

Technical Field

[0001] This utility model relates to the technical field of grain processing equipment, and in particular to a dust filtration device for a grain suction machine. Background Technology

[0002] Currently, grain suction machines are widely used in grain warehouses, docks, grain processing plants, and other places as important equipment for grain transportation and loading. During operation, grain suction machines usually transport grain into the container through an auger. However, during the movement, dropping, and sorting of grain, a large number of fine particles and dust are generated and suspended in the air, which not only pollutes the environment but may also endanger the respiratory health of operators and increase the difficulty of subsequent cleaning. To address the dust problem, existing technologies generally use a suction fan to draw dust to a filter device for treatment. The filter screen blocks solid particles, and a negative pressure fan (such as a centrifugal fan) is used to draw them in, thereby achieving dust collection and emission.

[0003] Existing dust filtration devices for grain suction machines typically rely on unidirectional airflow to directly attract dust. However, due to the lack of effective measures for the initial separation of grain and dust, grain carries a large amount of dust into the dust removal system, resulting in low dust removal efficiency. Furthermore, existing filtration devices often employ a single-layer filter structure, making it easy for dust to accumulate on the filter surface and become clogged after a period of use, requiring frequent shutdowns for cleaning. In addition, current filtration systems are mostly single-stage filtration systems, lacking the ability to process fine dust in multiple stages or layers, making it difficult to completely collect some fine particles. This can easily lead to secondary dust generation, affecting environmental cleanliness. Traditional dust removal systems typically lack effective self-cleaning functions, making it difficult to shake off accumulated dust from the filter in a timely manner, reducing the equipment's suction power and dust removal effect. Utility Model Content

[0004] The main purpose of this utility model is to propose and address the problems it aims to solve.

[0005] To solve the above problems, this utility model proposes a dust filtration device for a grain suction machine, comprising: a grain diversion box and a dust removal mechanism. A grain conveying mechanism is fixedly installed at the top of the grain diversion box, a first support frame is fixedly installed around the lower end of the grain diversion box, a second vibration motor is fixedly installed on one side of the grain diversion box, a volute fan is fixedly installed on one side of the dust removal mechanism, a first vibration motor is fixedly installed on the other side of the dust removal mechanism, a dust removal pipe is fixedly installed on the other side of the dust removal mechanism near the lower end of the first vibration motor, a collection box is installed at the bottom of the dust removal mechanism, and a second support frame is fixedly installed around the lower end of the dust removal mechanism.

[0006] The dust removal mechanism includes a housing, and multiple quick-release brackets are provided on both sides of the inner wall of the housing. A T-shaped slide groove is provided on one side of the quick-release bracket. A limit block is provided in the opening on the upper side of the inner wall of the slide groove. A second spring is fixedly provided on one side of the limit block, and a first spring is fixedly provided on the bottom surface of the inner wall of the slide groove.

[0007] In one embodiment, the grain diversion box includes a box body, and three diversion plates are fixedly installed on both sides of the inner wall of the box body. A screen is fixedly installed on one side of the upper two of the three diversion plates.

[0008] In one embodiment, the grain conveying mechanism includes a fixed frame, a threaded hose is fixedly installed at an opening on one side of the fixed frame, an auger is installed inside the threaded hose, a pulley is provided on one side of the auger, the pulley is rotatably installed on one side of the fixed frame, and a drive motor is fixedly installed at the top of the fixed frame.

[0009] In one embodiment, a filter screen is slidably disposed in each of the two opposite T-shaped slots of the plurality of quick-release brackets.

[0010] In one embodiment, the three filters are arranged in sequence as coarse filtration + medium filtration + fine filtration to progressively intercept dust of different sizes.

[0011] In one embodiment, one end of the dust removal pipe is connected to one side of the grain diversion box.

[0012] In one embodiment, a guide plate is fixedly installed at an opening on one side of the inner wall of the housing, and baffles are slidably installed at the slots on both sides of the lower end of the inner wall of the housing near the multiple quick-release brackets.

[0013] In one embodiment, the first vibration motor, the second vibration motor, the drive motor, and the volute fan are all connected to an external control power supply via connecting lines to achieve start-stop control. Beneficial effects

[0014] 1. By setting up a multi-stage diversion plate and screen structure inside the grain diversion box, and cooperating with a vibrating motor for vibration separation, most of the dust can be removed from the grain before it enters the dust removal system, greatly reducing the amount of entrained dust, improving the processing efficiency of the dust removal system, and reducing the system load. The dust removal mechanism is equipped with three layers of filters: coarse filter, medium filter, and fine filter, which intercept dust particles in sequence according to their size. This not only effectively prevents the rapid clogging caused by the concentration of impurities in traditional single-layer filters, but also significantly improves the capture rate of fine dust particles, reduces secondary dust, and improves the cleanliness of the working environment. By setting a guide plate at the dust removal inlet, the dust airflow is rationally guided to avoid dust directly impacting the filter surface and causing accumulation and blockage, thus extending the service life of the filter components and improving the continuous operation capability of the system.

[0015] 2. This device uses a quick-release frame and limit block in conjunction with a sliding groove to install the filter screen, allowing for rapid disassembly and assembly without tools. This facilitates daily cleaning and replacement. Simultaneously, a vibrating motor causes dust adsorbed on the filter screen to fall off promptly, which is then automatically collected by the lower collection box. This significantly reduces the frequency of manual maintenance and improves the continuity and stability of equipment operation. Buffer springs are installed on the grain diversion box and dust removal mechanism support frame to effectively absorb vibration impact when the vibrating motor is operating, ensuring stable operation of the entire machine, extending the equipment's service life, and ensuring that it maintains a high-efficiency dust removal effect even after long-term use. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the main axial structure of this utility model;

[0018] Figure 2 This is a schematic cross-sectional view of the main body structure of this utility model;

[0019] Figure 3 This is a cross-sectional structural diagram of the grain diversion box of this utility model;

[0020] Figure 4 This is a cross-sectional structural diagram of the dust removal mechanism of this utility model;

[0021] Figure 5 This is a schematic diagram of the axial structure of the quick-release bracket of this utility model;

[0022] Figure 6 This is a schematic diagram of the axial structure of the filter screen of this utility model;

[0023] Figure 7 This is a partial structural schematic diagram of the present invention.

[0024] The annotations in the attached figures are explained as follows:

[0025] 1. Grain diversion box; 2. Dust removal mechanism; 3. Grain conveying mechanism; 4. First support frame; 5. Second support frame; 6. First vibrating motor; 7. Dust removal pipe; 8. Volute fan; 9. Collection box; 10. Baffle; 101. Box body; 102. Diversion plate; 103. Screen; 104. Second vibrating motor; 201. Quick release frame; 202. Filter screen; 203. Guide plate; 204. First spring; 205. Limiting block; 206. Second spring; 207. Outer shell; 301. Fixing frame; 302. Threaded hose; 303. Drive motor; 304. Screwdriver. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] To achieve the above-mentioned utility model objectives, such as Figure 1-7 As shown, this utility model provides a dust filtration device for a grain suction machine. The grain conveying mechanism 3 includes a fixed frame 301. A threaded hose 302 is fixedly installed at an opening on one side of the fixed frame 301. An auger 304 is installed inside the threaded hose 302. A pulley is provided on one side of the auger 304. The pulley is rotatably mounted on one side of the fixed frame 301. A drive motor 303 is fixedly installed at the top of the fixed frame 301. The grain diversion box 1 includes a box body 101. Three diversion plates 102 are fixedly installed on both sides of the inner wall of the box body 101. A screen 103 is fixedly installed on one side of the two uppermost diversion plates 102. One end of the dust removal pipe 7 is connected to one side of the grain diversion box 1. The first vibration motor 6, the second vibration motor 104, the drive motor 303, and the volute fan 8 are all connected to an external control power supply through connecting lines to realize start and stop control.

[0028] Specifically, the drive motor 303 is first started. The drive motor 303 drives the auger 304 located inside the threaded hose 302 to rotate via the pulley at the top, thereby pushing the grain along the threaded hose 302. The grain falls into the slot at the top of the box 101 through the opening on the fixed frame 301 by the screw conveyor, and enters the grain diversion box 1. The grain first falls onto the uppermost diversion plate 102 inside the box 101, and slides down to the first screen 103 after being diverted and guided. At this time, the second vibration motor 104 located on one side of the outer wall of the box 101 is started to generate periodic vibration to separate the grain from the attached dust, improving the initial dust removal effect. The grain that has been screened by the first screen 103 continues to slide down the second diversion plate 102 and enters the second screen 103 for further screening, achieving a more thorough dust removal process. After screening, the grain slides out of the grain diversion box 1 along the bottom guide plate 203 and enters the next processing step. To ensure the stability and buffering of the vibration process, a first support frame 4 is set at the lower end of the grain diversion box 1, and a second support frame 5 is set at the lower end of the dust removal mechanism 2. Both support frames are equipped with buffer springs at the top to provide elastic support when the first vibration motor 6 and the second vibration motor 104 are working, so as to avoid the equipment from being displaced or damaged due to vibration.

[0029] To achieve the above-mentioned utility model objectives, such as Figure 1-6 As shown, a dust filtration device for a grain suction machine includes: a grain diversion box 1 and a dust removal mechanism 2. A grain conveying mechanism 3 is fixedly installed at the top of the grain diversion box 1. A first support frame 4 is fixedly installed around the lower end of the grain diversion box 1. A second vibration motor 104 is fixedly installed on one side of the grain diversion box 1. A volute fan 8 is fixedly installed on one side of the dust removal mechanism 2. A first vibration motor 6 is fixedly installed on the other side of the dust removal mechanism 2. A dust removal pipe 7 is fixedly installed on the other side of the dust removal mechanism 2 near the lower end of the first vibration motor 6. A collection box 9 is installed at the bottom of the dust removal mechanism 2. A second support frame 5 is fixedly installed around the lower end of the dust removal mechanism 2.

[0030] The dust removal mechanism 2 includes a housing 207. Multiple quick-release brackets 201 are provided on both sides of the inner wall of the housing 207. A T-shaped groove is opened on one side of the quick-release bracket 201. A limit block 205 is provided in the opening on the upper side of the inner wall of the groove. A second spring 206 is fixedly installed on one side of the limit block 205. A first spring 204 is fixedly installed on the bottom surface of the inner wall of the groove. Filter screens 202 are slidably installed in the two T-shaped grooves opposite to the multiple quick-release brackets 201. The three filter screens 202 are arranged in three layers: coarse filtration, medium filtration, and fine filtration, in order to gradually intercept dust of different sizes. A guide plate 203 is fixedly installed at the opening on one side of the inner wall of the housing 207. Baffles 10 are slidably installed on the grooves on both sides of the lower end of the multiple quick-release brackets 201 on the inner wall of the housing 207.

[0031] Specifically, as the grain enters the grain distribution box 1, the volute fan 8 on one side of the dust removal mechanism 2 is activated, generating strong suction. The dust-laden airflow separated from the grain is drawn into the dust removal mechanism 2 through the dust removal pipe 7 for processing. The dust removal pipe 7 is connected to the grain distribution box 1 via a flange, ensuring good sealing and preventing suction loss. After entering the dust removal mechanism 2, the dust-laden airflow is first guided by the guide plate 203 to prevent direct impact on the filter screen 202, which could cause localized blockage and effectively extend the service life of the filtration system. Subsequently, the dust passes through three layers of filter screens 202 made of different materials: (First layer: stainless steel wire mesh, 5mm aperture, mainly intercepting large particles (such as broken grains and wheat bran); Second layer: nylon mesh, 1mm-2mm aperture, mainly intercepting medium-sized dust particles; Third layer: HEPA microporous filter, 0.1mm-0.5mm aperture). The three-layer filtration system (specifically designed to intercept fine dust particles) adopts a "coarse filtration + medium filtration + fine filtration" structure. Impurities of different particle sizes are effectively intercepted step by step, significantly improving filtration efficiency while reducing the load on a single layer and preventing clogging. After passing through the three layers of filtration, clean air is directly discharged to the external environment. The baffles 10 are slotted and slidably fitted with the inner wall of the outer casing 207 on both sides. Normally closed, they increase the attraction of the volute fan 8 to dust, ensuring that dust is filtered along the filter screen 202. When in use, first remove the baffles 10 from the slots on both sides of the inner wall of the outer casing 207, and then start the first vibration motor 6 to generate vibration. The filter screen 202 is cleaned by removing fine dust particles that remain on its surface. The dust particles are then deposited into the inclined structure at the lower end of the outer casing 207 and finally slide into the bottom collection box 9. The collection box 9 is designed to be slidable and removable for easy regular cleaning and replacement, making maintenance more convenient and efficient. Each filter screen 202 can be disassembled and cleaned or replaced individually, greatly facilitating maintenance and ensuring long-term stable operation. The quick-release bracket 201 is used to quickly install and remove the filter screen 202. The specific operation is as follows: during installation, slide the filter screen 202 downwards along the two oppositely arranged T-shaped sliding grooves and press it down. The T-shaped sliders on both sides of the filter screen 202 will slide into the T-shaped sliding grooves. During the internal sliding process, the limiting block 205 is deflected by force, and the filter screen 202 slides smoothly into the designated position. Then, the limiting block 205 is reset under the elastic force of the second spring 206, thereby achieving locking and fixation. The first spring 204 set at the bottom of the slide provides an upward pushing force to ensure that the filter screen 202 fits tightly against the slide, improving the sealing and stability. When disassembling, simply press down on the limiting block 205 and pull up on the filter screen 202 to remove it quickly, greatly improving the efficiency of replacement and cleaning. The slots on both sides of the baffle 10 and the inner wall of the outer shell 207 cooperate to slide normally closed to increase the attraction of dust by the volute fan 8.

[0032] Working principle: The drive motor 303 drives the auger 304 to rotate, thereby transporting the grain through the threaded hose 302 to the grain distribution box 1. After the grain falls into the grain distribution box 1, it is guided by multiple distribution plates 102 in sequence, causing the grain to slide down along a set trajectory. At the same time, the second vibration motor 104 starts to screen the grain through the screen 103 set on the side of the distribution plate 102 near the upper end, and the dust is initially separated. At the same time, the grain distribution box 1 is driven to vibrate slightly, causing the grain to jump and slide between the screen 103 and the distribution plate 102, thereby accelerating the separation process of dust and grain. The separated dust is guided to the dust removal mechanism 2 through the dust removal pipe 7. In the dust removal mechanism 2, the volute fan 8 runs continuously, generating suction to draw the dust airflow into the outer shell 207. The airflow first passes through the coarse filter 202, which intercepts large dust particles. Then, it passes through the medium filter 202 and the fine filter 202 in sequence, achieving step-by-step interception of dust particles of different sizes. During or after the dust removal operation is completed, the first vibration motor 6 can be started in a timely manner through the start-stop control system, causing the entire outer shell 207 to vibrate, thereby shaking off the residual dust adhering to the surface of the filter 202. The dust eventually settles and is collected in the collection box 9 for subsequent unified cleaning and treatment. Each power unit (first vibration motor 6, second vibration motor 104, transmission motor 303 and volute fan 8) is connected to an external control power supply through connection lines, and start-stop linkage is achieved through centralized control, which improves the overall operating efficiency of the operation.

[0033] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A dust filtration device for a grain suction machine, comprising: The grain diversion box (1) and the dust removal mechanism (2) are characterized in that a grain conveying mechanism (3) is fixedly installed at the top of the grain diversion box (1), a first support frame (4) is fixedly installed around the lower end of the grain diversion box (1), a second vibration motor (104) is fixedly installed on one side of the grain diversion box (1), a volute fan (8) is fixedly installed on one side of the dust removal mechanism (2), a first vibration motor (6) is fixedly installed on the other side of the dust removal mechanism (2), a dust removal pipe (7) is fixedly installed on the other side of the dust removal mechanism (2) near the lower end of the first vibration motor (6), a collection box (9) is installed at the bottom of the dust removal mechanism (2), and a second support frame (5) is fixedly installed around the lower end of the dust removal mechanism (2). The dust removal mechanism (2) includes a housing (207). Multiple quick-release brackets (201) are provided on both sides of the inner wall of the housing (207). A T-shaped slide groove is provided on one side of the quick-release bracket (201). A limit block (205) is provided in the opening on the upper side of the inner wall of the slide groove. A second spring (206) is fixedly provided on one side of the limit block (205). A first spring (204) is fixedly provided on the bottom surface of the inner wall of the slide groove.

2. The dust filtration device for a grain suction machine as described in claim 1, characterized in that, The grain diversion box (1) includes a box body (101), and three diversion plates (102) are fixedly installed on both sides of the inner wall of the box body (101). A screen (103) is fixedly installed on one side of the two uppermost diversion plates (102).

3. The dust filtration device for a grain suction machine as described in claim 1, characterized in that, The grain conveying mechanism (3) includes a fixed frame (301), a threaded hose (302) is fixedly installed at an opening on one side of the fixed frame (301), an auger (304) is installed inside the threaded hose (302), a pulley is provided on one side of the auger (304), the pulley is rotatably installed on one side of the fixed frame (301), and a drive motor (303) is fixedly installed at the top of the fixed frame (301).

4. The dust filtration device for a grain suction machine as described in claim 1, characterized in that, Each of the multiple quick-release brackets (201) has a filter screen (202) slidably disposed in the two T-shaped slots opposite to each other.

5. The dust filtration device for a grain suction machine as described in claim 4, characterized in that, The three filters (202) are arranged in three layers: coarse filtration, medium filtration, and fine filtration, to gradually intercept dust of different sizes.

6. The dust filtration device for a grain suction machine as described in claim 3, characterized in that, One end of the dust removal pipe (7) is connected to one side of the grain diversion box (1).

7. The dust filtration device for a grain suction machine as described in claim 6, characterized in that, A guide plate (203) is fixedly installed at the opening on one side of the inner wall of the outer shell (207), and a baffle (10) is slidably installed at the slots on both sides of the lower end of the inner wall of the outer shell (207) near the multiple quick-release brackets (201).

8. The dust filtration device for a grain suction machine as described in claim 1, characterized in that, The first vibration motor (6), the second vibration motor (104), the transmission motor (303) and the volute fan (8) are all connected to an external control power supply through connecting lines to achieve start-stop control.

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