Dust-proof discharge hopper

Abstract

The utility model relates to the field of grain engineering discloses a dustproof unloading hopper, including the hopper body that forms the feed channel, the center is offset to the feed channel and rotates and is installed on the pivot of hopper body and the grain baffle and counterweight that are connected to the pivot, wherein the grain baffle is configured to keep in the closed position of closed feed channel under the action of counterweight, and the pivot can rotate under the gravity action of material to rotate from the closed position to the open position that allows material to fall. When unloading grain, the gravity action of material accumulation on the grain baffle is utilized to drive the grain baffle to rotate around the axis and leave the closed position to open the feed channel, setting single grain baffle reduces the occurrence of feed channel blockage, and the pivot is set to deviate from the center of the feed channel, which can avoid the impact of material on the pivot, improve the stability and durability during the operation of the unloading hopper.

Description

Technical Field

[0001] This utility model belongs to the field of grain engineering, and specifically relates to a dust-proof unloading hopper. Background Technology

[0002] During grain storage, processing, and drying operations, bulk grain typically passes through unloading hoppers when transferred via conveyor equipment. During this process, the grain, carrying a large amount of dust, can easily generate severe dust pollution at the feed inlet.

[0003] The most common solution in the existing technology is to set up an external dust collection device near the feed inlet. By opening a dust collection port on the side or above the feed inlet and connecting it to a dust collection fan, the negative pressure generated by the operation of the fan is used to suck away the dust. However, this method requires an additional dust collection network pipeline and motor, which increases the equipment investment cost and daily operating cost. At the same time, the dust collection fan has a limited suction area and the dust collection effect is not good.

[0004] To overcome the shortcomings of the aforementioned active dust removal systems, existing technologies provide an energy-saving dust-proof unloading hopper (such as...). Figure 3 As shown, multiple swing shafts 7 are installed at the feed inlet, each with a roof-shaped swing blade 8 that swings only on one side. The swing blades 8 hang down naturally under gravity and overlap each other to seal the feed inlet, thereby suppressing dust. However, the dense arrangement of swing shafts 7 and swing blades 8 reduces the cross-sectional area available for material flow, making it prone to clogging when processing viscous wet grains. Furthermore, the long-term impact of multiple swing shafts on the material can easily lead to deformation or even structural failure, resulting in low reliability. Utility Model Content

[0005] The purpose of this invention is to provide a dust-proof unloading hopper that can stably suppress dust generation without the need for external power.

[0006] To achieve the above objectives, this utility model provides a dust-proof unloading hopper, including a hopper body with a feeding channel, a rotating shaft offset from the center of the feeding channel and rotatably mounted on the hopper body, and a grain baffle plate and a counterweight connected to the rotating shaft; wherein the grain baffle plate is configured to be held in a closed position of the closed feeding channel under the action of the counterweight, and can rotate around the rotating shaft under the action of the gravity of the material to rotate from the closed position to an open position that allows the material to fall.

[0007] In some embodiments, at least one end of the rotating shaft is located outside the feed channel, and the counterweight includes an adjusting rod connected to the end of the rotating shaft and a counterweight block disposed at the free end of the adjusting rod, the adjusting rod being angled relative to the rotating shaft.

[0008] In some embodiments, the end of the shaft has a radially extending threaded hole, and the adjusting rod has a threaded connector for connecting to the threaded hole.

[0009] In some implementations, the free end of the adjusting rod is provided with a threaded section, and the counterweight is threadedly engaged with the threaded section to allow adjustment of the vertical distance between the counterweight and the rotating shaft.

[0010] In some embodiments, a bushing for supporting a rotating shaft is installed on the side wall of the hopper body, and the rotating shaft is rotatably mounted to the hopper body through the bushing.

[0011] In some embodiments, the hopper body includes a first side plate and an opposing second side plate, the axis of the rotating shaft is parallel to the first side plate and is mounted adjacent to the first side plate, and when in the closed position, the end of the grain-blocking plate away from the rotating shaft is held in the closed position by the blocking action of the second side plate.

[0012] In some embodiments, the second side plate is provided with a first stop plate for stopping the grain stop plate.

[0013] In some embodiments, the second side plate is provided with a first stop plate for stopping the grain stop plate.

[0014] In some embodiments, a second stop plate is also provided on the rotating shaft, extending from the first side plate to above the rotating shaft and in contact with the rotating shaft.

[0015] In some embodiments, the hopper body includes a top plate that partially covers the top of the feed channel.

[0016] Through the above technical solution, the dust-proof unloading hopper provided by this utility model utilizes the effect of the counterweight to make the grain baffle rotate around the axis to a closed position to avoid dust generation when there is no grain. When unloading grain, the gravity of the material piled on the grain baffle drives the grain baffle to rotate around the axis to leave the closed position and open the feeding channel. Compared with the prior art, this utility model sets a single grain baffle to reduce the occurrence of feeding channel blockage. At the same time, the rotating shaft is set off from the center of the feeding channel, which can effectively avoid the impact of the material on the rotating shaft, effectively improving the stability and durability of the unloading hopper during operation.

[0017] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the embodiments of the present invention and form part of the specification. They are used together with the following detailed description to explain the embodiments of the present invention, but do not constitute a limitation thereof. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without any inventive effort. In the drawings: Figure 1 This is a cross-sectional schematic diagram of the dust-proof unloading hopper according to an embodiment of the present utility model; Figure 2 This is a three-dimensional schematic diagram of the dust-proof unloading hopper according to an embodiment of the present utility model; Figure 3 This is an energy-saving, dust-proof unloading hopper based on existing technology.

[0019] Explanation of reference numerals in the attached figures: 1. Hopper body; 11. First side plate; 12. Second side plate; 13. First stop plate; 14. Top plate; 2. Rotating shaft; 3. Grain stop plate; 4. Counterweight; 41. Adjusting rod; 42. Counterweight block; 5. Bushing; 6. Second stop plate. Detailed Implementation

[0020] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0021] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0022] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0023] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0024] like Figure 1 and Figure 2 As shown, this utility model provides a dust-proof unloading hopper, including a hopper body 1 with a feeding channel, a rotating shaft 2 offset from the center of the feeding channel and rotatably mounted on the hopper body 1, and a grain baffle 3 and a counterweight 4 connected to the rotating shaft 2; wherein the grain baffle 3 is configured to be held in a closed position of the closed feeding channel under the action of the counterweight 4, and can rotate around the rotating shaft 2 under the action of the gravity of the material to rotate from the closed position to an open position that allows the material to fall.

[0025] Specifically, such as Figure 1 As shown, the feeding channel formed inside the hopper body 1 consists of a straight section with a constant cross-sectional area in the upper half and a gradually narrowing section with a funnel-shaped structure in the lower half, used to guide the flow of materials (such as grain). The rotating shaft 2 is rotatably mounted on the side wall of the hopper body 1, and its installation position is offset from the center of the feeding channel to avoid direct impact of materials on the shaft 2, thereby extending the service life of the unloading hopper. The grain baffle 3 and the counterweight 4 are fixedly connected to the rotating shaft 2 to... Figure 1 For example, the counterweight 4 provides a counterclockwise torque to the rotating shaft 2, keeping the grain baffle 3 in a closed position when there is no material, preventing dust from escaping; when material falls into the feeding channel and accumulates on the grain baffle 3, the torque generated by the weight of the material on the rotating shaft 2 overcomes the torque provided by the counterweight 4, causing the grain baffle 3 to rotate clockwise from the closed position to the open position that allows material to fall. This achieves the suppression of dust from the unloading hopper without the need for external power, and compared to... Figure 3 Compared with the prior art shown, this utility model effectively reduces the clogging phenomenon that is prone to occur when processing wet grains by setting a single grain baffle 3, and effectively reduces the impact of materials on the rotating shaft 2 by setting the rotating shaft 2 off the center of the feeding channel, thereby improving the reliability of equipment operation.

[0026] like Figure 1 and Figure 2As shown, in some embodiments, at least one end of the rotating shaft 2 is located outside the feed channel, and the counterweight 4 includes an adjusting rod 41 connected to the end of the rotating shaft 2 and a counterweight block 42 disposed at the free end of the adjusting rod 41. The adjusting rod 41 is set at an angle relative to the rotating shaft 2.

[0027] Specifically, one or both ends of the rotating shaft 2 extend through the side wall of the hopper body 1 to the outside of the feed channel, facilitating the installation, adjustment, and maintenance of the counterweight 4, while preventing material contact with the counterweight 4, reducing the risk of wear and blockage. The adjusting rod 41 is angled to the rotating shaft 2, creating a certain vertical distance between the counterweight 42 and the rotating shaft 2 to provide the torque needed to keep the grain baffle 3 in the closed position. Figure 1 and Figure 2 For example, the adjusting rod 41 extends radially along the rotating shaft 2 so that the counterweight 42 can provide a greater torque to the rotating shaft 2. In other embodiments, the adjusting rod 41 and the rotating shaft 2 may be at other angles, which is not limited by this invention.

[0028] In some embodiments, the end of the rotating shaft 2 is provided with a radially extending threaded hole, and the adjusting rod 41 is provided with a threaded connector for connecting to the threaded hole.

[0029] Specifically, the threaded connector can be an external thread structure located at the end of the adjusting rod 41, the size of which matches the inner diameter of the threaded hole at the end of the rotating shaft 2. A reliable connection between the adjusting rod 41 and the rotating shaft 2 is achieved by screwing the threaded connector into the threaded hole. When maintenance or replacement of parts is required, the adjusting rod 41 can be removed by rotating it in the opposite direction, making it easy to adjust or replace the counterweight 4.

[0030] like Figure 1 and Figure 2 As shown, in some embodiments, the free end of the adjusting rod 41 is provided with a threaded section, and the counterweight 42 forms a threaded engagement with the threaded section to allow adjustment of the vertical distance between the counterweight 42 and the rotating shaft 2.

[0031] Specifically, the free end of the adjusting rod 41 is machined with external threads to form a threaded section, and the center of the counterweight 42 is provided with a matching internal threaded hole. By rotating the counterweight 42, it moves along the axial direction of the adjusting rod 41, thereby adjusting the vertical distance between the counterweight 42 and the rotating shaft 2, and thus changing the magnitude of the torque applied by the counterweight 42 to the rotating shaft 2, that is, the magnitude of the closing force that needs to be overcome to drive the grain baffle 3 to rotate. During use, the position of the counterweight 42 can be adjusted according to the unloading requirements of different materials (such as dry or wet grain), simplifying the adjustment operation of the equipment and improving the applicability of the equipment.

[0032] like Figure 1 and Figure 2As shown, in some embodiments, a bushing 5 for supporting the rotating shaft 2 is installed on the side wall of the hopper body 1, and the rotating shaft 2 is rotatably mounted to the hopper body 1 through the bushing 5.

[0033] Specifically, the side wall of the hopper body 1 has a mounting hole for the rotating shaft 2 to pass through. A bushing 5 is installed in the mounting hole to support the rotating shaft 2. The bushing 5 is made of a wear-resistant material, such as a copper-based alloy or a high-performance engineering plastic (nylon, etc.), to reduce the coefficient of friction between the bushing 5 and the rotating shaft 2, reduce wear, and have a certain impact resistance, thereby extending the service life of the equipment. In some embodiments, a sealing ring is provided between the bushing 5 and the side wall of the hopper body 1 to prevent dust in the feed channel from escaping through the gap in the mounting hole, further enhancing the dustproof sealing capability of the equipment.

[0034] like Figure 1 As shown, in some embodiments, the hopper body 1 includes a first side plate 11 and an opposing second side plate 12. The axis of the rotating shaft 2 is parallel to the first side plate 11 and is installed at a position adjacent to the first side plate 11. When in the closed position, the end of the grain-blocking plate 3 away from the rotating shaft 2 is held in the closed position by the blocking action of the second side plate 12.

[0035] Specifically, such as Figure 1 As shown, when there is no material, the torque generated by the counterweight 4 installed on the rotating shaft 2 drives the grain baffle 3 to rotate counterclockwise around the rotating shaft 2 (to... Figure 1 (Taking a specific angle as an example), until the end of the grain baffle 3 away from the rotating shaft 2 abuts against the second side plate 12, the second side plate 12 acts as a stop component, providing mechanical limitation for the grain baffle 3, keeping it stably in the closed position of the completely enclosed feeding channel, effectively preventing dust from escaping. When the material falls, the impact force of the material and the gravity generated by the accumulation mainly act on the plate of the grain baffle 3 away from the rotating shaft 2. Since the rotating shaft 2 is installed near the first side plate 11, the lever arm of the material is relatively long, generating a torque sufficient to overcome the counterweight 4, causing the grain baffle 3 to rotate clockwise around the rotating shaft 2 to open the feeding channel, facilitating the falling of the material. Setting the rotating shaft 2 close to the first side plate 11, on the one hand, gives the material accumulated on the grain baffle 3 a relatively long lever arm, which can efficiently overcome the torque brought by the counterweight 4, making the opening response of the grain baffle 3 sensitive and efficient. On the other hand, it allows the rotating shaft 2 and the bushing 5 to avoid the main impact zone of the material, significantly reducing the direct impact and wear of the material on rotating parts such as the rotating shaft 2 and the bushing 5, improving the durability and reliability of the equipment.

[0036] like Figure 1 As shown, in some embodiments, the second side plate 12 is provided with a first stop plate 13 for stopping the grain stop plate 3.

[0037] Specifically, the first stop plate 13 can be fixedly installed on the inner surface of the second side plate 12 by welding or bolting. When the grain retaining plate 3 rotates towards the closed position under the torque of the counterweight 4, the first stop plate 13 intercepts the end of the grain retaining plate 3 away from the rotating shaft 2, keeping the grain retaining plate 3 in the closed position. By setting the first stop plate 13, the grain retaining plate 3 is prevented from directly impacting the second side plate 12, effectively protecting the structure of the hopper body 1. Furthermore, since the first stop plate 13 is an independently installed stop on the second side plate 12, high-strength impact-resistant materials, such as Q235, Q345, or higher strength steel plates, can be selected for its construction, thereby significantly extending the service life of the equipment.

[0038] In some embodiments, at least one of the first stop plate 13 and the grain stop plate 3 is provided with an elastic sealing gasket at the abutment position.

[0039] Specifically, an elastic sealing gasket made of elastic material such as rubber, polyurethane, or silicone is fixedly installed at the corresponding position of the stop contact surface of the first stop plate 13 and / or the free end of the grain retaining plate 3. The elastic sealing gasket can form a sealing barrier between the grain retaining plate 3 and the first stop plate 13, effectively preventing dust from escaping. At the same time, the elastic deformation of the elastic sealing gasket can absorb and buffer the impact force when the grain retaining plate 3 and the first stop plate 13 collide, reduce the impact noise when the grain retaining plate 3 is closed, reduce fatigue damage to the equipment, and extend its service life.

[0040] like Figure 1 As shown, in some embodiments, a second stop plate 6 is also provided on the rotating shaft 2, extending from the first side plate 11 to the top of the rotating shaft 2 and contacting the rotating shaft 2.

[0041] Specifically, the second stop plate 6 is a rigid plate-shaped component, fixed to the inner wall of the first side plate 11 by welding or bolting. Its free end is located directly above the rotating shaft 2, and maintains contact with or has a very small gap from the outer circumferential surface of the rotating shaft 2. The second stop plate 6 is used to protect the rotating shaft 2 from material impact, effectively preventing problems such as jamming or wear of the rotating shaft 2 due to the accumulation or intrusion of material particles. At the same time, when the grain-blocking plate 3 is in the closed position, the first stop plate 13, the grain-blocking plate 3, and the second stop plate 6 work together to form a seal on the feeding channel.

[0042] like Figure 1 and Figure 2 As shown, in some embodiments, the hopper body 1 includes a top plate 14 that partially covers the top of the feed channel.

[0043] Specifically, the hopper body 1 may be integrally formed with a top plate 14 located at the top of the feeding channel, the top plate 14 partially covering the feeding channel to block most of the dust rising inside the feeding channel. In other embodiments, the top plate 14 may also be designed as an openable hinged cover to facilitate cleaning and maintenance of components such as the rotating shaft 2 and the grain baffle 3 inside the hopper body 1.

[0044] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A dust-proof unloading hopper, characterized in that, It includes a hopper body (1) with a feeding channel, a rotating shaft (2) offset from the center of the feeding channel and rotatably mounted on the hopper body (1), and a grain baffle (3) and a counterweight (4) connected to the rotating shaft (2); wherein The grain baffle (3) is configured to remain in a closed position that closes the feed channel under the action of the counterweight (4), and to be able to rotate around the pivot (2) under the action of the gravity of the material to rotate from the closed position to an open position that allows the material to fall.

2. The dust-proof unloading hopper according to claim 1, characterized in that, At least one end of the rotating shaft (2) is located outside the feed channel. The counterweight (4) includes an adjusting rod (41) connected to the end of the rotating shaft (2) and a counterweight block (42) disposed at the free end of the adjusting rod (41). The adjusting rod (41) is set at an angle relative to the rotating shaft (2).

3. The dust-proof unloading hopper according to claim 2, characterized in that, The end of the rotating shaft (2) is provided with a radially extending threaded hole, and the adjusting rod (41) is provided with a threaded connector for connecting to the threaded hole.

4. The dust-proof unloading hopper according to claim 2, characterized in that, The free end of the adjusting rod (41) is provided with a threaded section, and the counterweight (42) forms a threaded engagement with the threaded section to allow adjustment of the vertical distance between the counterweight (42) and the rotating shaft (2).

5. The dust-proof unloading hopper according to claim 1, characterized in that, A bushing (5) for supporting the rotating shaft (2) is installed on the side wall of the hopper body (1), and the rotating shaft (2) is rotatably installed to the hopper body (1) through the bushing (5).

6. The dust-proof unloading hopper according to claim 1, characterized in that, The hopper body (1) includes a first side plate (11) and a second side plate (12) opposite to it. The axis of the rotating shaft (2) is parallel to the first side plate (11) and is installed at a position adjacent to the first side plate (11). When in the closed position, the end of the grain blocking plate (3) away from the rotating shaft (2) is held in the closed position by the blocking action of the second side plate (12).

7. The dust-proof unloading hopper according to claim 6, characterized in that, The second side plate (12) is provided with a first stop plate (13) for stopping the grain stop plate (3).

8. The dust-proof unloading hopper according to claim 7, characterized in that, At least one of the first stop plate (13) and the grain stop plate (3) is provided with an elastic sealing gasket at the abutment position.

9. The dust-proof unloading hopper according to claim 6, characterized in that, The rotating shaft (2) is also provided with a second stop plate (6) extending from the first side plate (11) to the top of the rotating shaft (2) and in contact with the rotating shaft (2).

10. The dust-proof unloading hopper according to claim 1, characterized in that, The hopper body (1) includes a top plate (14) that partially covers the top of the feed channel.

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