Grain conveying hopper dust removal device

Abstract

The utility model relates to the technical field of grain conveying, and discloses a grain conveying hopper dust removal device which is arranged at the upper end of a hopper and comprises a cylindrical shell and an isolation cylinder arranged in the shell, an annular bottom plate is fixedly arranged at the bottom of the shell, and the annular bottom plate is detachably connected with the hopper; an annular cover plate is fixedly arranged between the upper end of the shell and the upper end of the isolation cylinder, a closed annular cavity is formed among the shell, the isolation cylinder, the annular bottom plate and the annular cover plate, and a plurality of air suction grooves which communicate with the annular cavity and can prevent grain from entering the annular cavity are formed in the inner wall of the isolation cylinder. The annular bottom plate is provided with an air suction pipe which is communicated with the annular cavity and used for being connected with external dust collection equipment. The device has the beneficial effects that the device can be directly mounted on an existing hopper for use, dust in the hopper is effectively prevented from escaping, and the working environment is kept clean.

Description

Technical Field

[0001] The utility model relates to the technical field of grain transportation, in particular to a dust removal device for a grain conveying hopper. Background Art

[0002] To ensure national food security and keep the stored grain in good condition all the time, in the field of grain storage, the annual inbound and outbound volume of grain is very large. Usually, a grain conveying hopper is used in combination with a conveyor line to realize operations such as inbound, outbound, loading (onto a ship) of the granary. Since grains such as cereals and wheat contain a certain proportion of impurities (such as debris of wheat bran and rice husks), when the grain enters the hopper, some impurities will escape into the air, making the surrounding air filled with dust. These dusts make the working environment poor; at the same time, these dusts will subsequently fall onto the ground one after another, covering the ground with dust, and a large amount of manpower is required for cleaning. Content of the Utility Model

[0003] In order to solve the above problems existing in the prior art, the utility model provides a dust removal mechanism for a grain conveying hopper that can be directly installed on an existing hopper, effectively prevent dust from escaping from the hopper, and keep the working environment clean.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A dust removal device for a grain conveying hopper is arranged at the upper end of the hopper and includes a cylindrical outer shell and an isolation cylinder arranged inside the outer shell. A circular bottom plate is fixedly arranged at the bottom of the outer shell, and the circular bottom plate is detachably connected to the hopper; a circular cover plate is fixedly arranged between the upper end of the outer shell and the upper end of the isolation cylinder. A closed annular cavity is formed among the outer shell, the isolation cylinder, the circular bottom plate and the circular cover plate. A plurality of air suction grooves that are communicated with the annular cavity and can prevent grains from entering the annular cavity are arranged at the inner wall of the isolation cylinder, and an air suction pipe communicated with the annular cavity and used for connecting with an external dust suction device is arranged on the circular bottom plate.

[0006] By adopting the above technical solutions: This kind of dust removal device is directly installed on an existing hopper for use. The air suction pipe is connected to an external dust removal device (such as a bag filter). The air suction pipe sucks air, making the annular cavity in a negative pressure state. The dust escaping after the grain falls into the hopper is sucked into the annular cavity through the air suction grooves and finally enters the dust removal device through the air suction pipe to be collected, thereby preventing the dust from escaping from the upper end of the hopper into the air and keeping the working environment clean; it can be disassembled from the hopper after use.

[0007] Preferably, a plurality of connecting seats are provided on the outer side of the open end of the hopper, which are circumferentially distributed, and the connecting seats are detachably connected to the hopper; the upper end of the connecting seat extends outward to form a connecting ear, and the top surfaces of the connecting ears on each connecting seat are coplanar. A vertically distributed through hole is provided on the connecting ear, and a plurality of stud bolts are fixed on the annular bottom plate. After the stud bolts pass through the through holes, they are locked by nuts. By arranging a plurality of connecting seats at the outer wall of the upper end of the hopper, the dust removal device is connected to the hopper through the connecting seats, and the installation and disassembly of the dust removal device are very convenient.

[0008] Preferably, the inner surface of the connecting seat is configured as an arc surface that fits the outer wall of the hopper. Connecting holes are provided at both ends of the connecting seat, and threaded holes are provided at the corresponding positions on the hopper. The connecting holes are connected to the threaded holes by bolts.

[0009] Preferably, the isolation cylinder includes a first conical cylinder at the upper end and a second conical cylinder at the lower end of the first conical cylinder. The first conical cylinder is configured to be smaller at the top and larger at the bottom, and the second conical cylinder is configured to be larger at the top and smaller at the bottom. The lower end of the first conical cylinder is connected to the upper end of the second conical cylinder through an arc-shaped transition surface. The suction grooves are uniformly arranged on the first conical cylinder in the circumferential direction. By arranging the suction grooves on the first conical cylinder, since the inner wall of the first conical cylinder is a conical surface that is smaller at the top and larger at the bottom, it can prevent the grain from blocking the suction grooves and ensure that the suction grooves maintain a smooth dust suction state.

[0010] Preferably, the lower end of the second conical cylinder extends downward to form a limiting cylinder that extends into the feeding port. The limiting cylinder is used to block the gap between the annular bottom plate and the top surface of the hopper on the one hand, and play a role of preliminary guiding and limiting during the installation of the dust removal device on the other hand.

[0011] Preferably, the first conical cylinder, the second conical cylinder, and the limiting cylinder are of an integral structure, and the outer wall of the lower end of the second conical cylinder is welded and fixed to the inner wall of the annular bottom plate. This setting can effectively prevent the axial misalignment between the isolation cylinder and the annular bottom plate, making the welding between the isolation cylinder and the annular bottom plate more stable and reliable.

[0012] Therefore, the utility model has the beneficial effects of being able to be directly installed on the existing hopper for use, effectively preventing the dust in the hopper from escaping, and keeping the working environment clean. Description of the Drawings

[0013] Figure 1 It is a schematic diagram of the installation structure of the utility model and the hopper.

[0014] Figure 2 It is Figure 1 Another perspective view of

[0015] Figure 3 It is Figure 1 An exploded view of

[0016] Figure 4 It is a schematic structural diagram of a connecting seat.

[0017] Figure 5 It is another perspective view of the connecting seat.

[0018] Figure 6 It is Figure 1 The schematic structural diagram after removing the hopper in

[0019] Figure 7 It is Figure 6 The sectional view of

[0020] Figure 8 It is a schematic structural diagram of an isolation cylinder. Specific embodiments

[0021] In order to make the technical problems, technical solutions and beneficial technical effects to be solved by the present utility model clearer and more understandable, the present utility model will be further described in detail below in conjunction with the drawings and multiple exemplary embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model, rather than to limit the protection scope of the present utility model.

[0022] It should be understood that in this article, expressions such as "first" and "second" are only for descriptive purposes, and should not be construed as indicating or implying relative importance, nor should they be construed as implicitly indicating the quantity of the indicated technical features. Features defined with "first" and "second" may explicitly or implicitly include at least one of such features.

[0023] Such as Figures 1-7 A grain conveying hopper dust removal device as shown is arranged at the upper end of the hopper 1 and includes a cylindrical outer shell 10 and an isolation cylinder 20 arranged inside the outer shell 10. A circular bottom plate 11 is fixedly provided at the bottom of the outer shell 10, and the circular bottom plate 11 is detachably connected to the hopper 1; a circular cover plate 12 is fixedly provided between the upper end of the outer shell 10 and the upper end of the isolation cylinder 20. A closed annular cavity 30 is formed among the outer shell 10, the isolation cylinder 20, the circular bottom plate 11 and the circular cover plate 12. A plurality of air suction grooves 31 communicating with the annular cavity 30 and capable of preventing grains from entering the annular cavity 30 are arranged at the inner wall of the isolation cylinder 20, and an air suction pipe 32 communicating with the annular cavity 30 and used for connecting with an external dust suction device is arranged on the circular bottom plate 11.

[0024] A plurality of connecting seats 40 distributed circumferentially are provided outside the open end of the hopper 1, and the connecting seats 40 are detachably connected to the hopper 1; an upper end of the connecting seat 40 extends outward to form a connecting ear 41, and the top surfaces of the connecting ears 41 on each connecting seat 40 are coplanar. A vertically distributed through hole 42 is provided on the connecting ear 41. A plurality of stud bolts 13 are fixedly provided on the annular bottom plate 11. After the stud bolts 13 pass through the through holes 42, they are locked by nuts 14. The inner surface of the connecting seat 40 is configured as an arc surface that fits the outer wall of the hopper 1. Connecting holes 43 are provided at both ends of the connecting seat 40, and threaded holes 100 are provided at corresponding positions on the hopper 1. The connecting holes 43 are connected to the threaded holes 100 by bolts 101.

[0025] As Figure 7 and Figure 8 shown, the isolation cylinder 20 includes a first conical cylinder 200 at the upper end and a second conical cylinder 201 at the lower end of the first conical cylinder 200. The first conical cylinder 200 is configured to be smaller at the top and larger at the bottom, and the second conical cylinder 201 is configured to be larger at the top and smaller at the bottom. The lower end of the first conical cylinder 200 is connected to the upper end of the second conical cylinder 201 through an arc-shaped transition surface 202. The air suction grooves are uniformly arranged circumferentially on the first conical cylinder 200; the lower end of the second conical cylinder 201 extends downward to form a limiting cylinder 203 that extends into the material inlet. The first conical cylinder 200, the second conical cylinder 201, and the limiting cylinder are of an integral structure, and the outer wall at the lower end of the second conical cylinder 201 is fixedly welded to the inner wall of the annular bottom plate 11.

[0026] Combined with the attached drawings, the principle of the present utility model is as follows: As Figure 1 and Figure 3 shown, four connecting seats 40 are directly installed circumferentially on the outer wall of the upper end of the existing hopper 1, and the connecting seats and the hopper are fixed by bolts; then the dust removal device is installed on the connecting seats 40. Specifically, the stud bolts 13 on the annular bottom plate 11 are passed through the through holes 42 on the connecting seats 40 and locked by nuts 14. The suction pipe 32 is connected to an external bag filter. After the bag filter starts, the suction pipe sucks air, making the annular cavity in a negative pressure state. The dust escaping from the hopper opening enters the annular cavity through the air suction grooves 31, and finally the dust enters the bag filter through the suction pipe and is collected; since the air suction grooves 31 are provided on the conical surface of the first conical cylinder 200, the grains will not block the air suction grooves, thus realizing stable and continuous dust suction. This kind of dust removal device can be directly installed on the existing hopper to realize the dust removal transformation of the hopper, effectively preventing the dust from escaping from the upper end of the hopper and keeping the working environment clean.

[0027] In the description of the present utility model, it should be understood that the directions or positional relationships indicated by up and down, left and right, inner end, outer end, one end, the other end, etc. are based on the orientation or positional relationship shown in the drawings, and are only for more clearly facilitating the description of the technical solution of the present utility model, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific orientation, and should not be construed as a limitation to the present utility model.

[0028] Although specific embodiments of the present utility model are described in detail herein, they are given only for the purpose of explanation and should not be considered as limiting the scope of the present utility model. Various substitutions, changes and modifications can be conceived without departing from the spirit and scope of the present utility model.

Claims

1. A dust removal device for a grain conveying hopper, which is arranged at the upper end of the hopper (1), and is characterized in that, It includes a cylindrical outer shell (10) and a partition cylinder (20) arranged inside the outer shell (10). A circular bottom plate (11) is fixedly provided at the bottom of the outer shell (10), and the circular bottom plate (11) is detachably connected to the hopper (1). A circular cover plate (12) is fixedly provided between the upper end of the outer shell (10) and the upper end of the partition cylinder (20). A closed circular cavity (30) is formed among the outer shell (10), the partition cylinder (20), the circular bottom plate (11), and the circular cover plate (12). A plurality of air suction grooves (31) that communicate with the circular cavity (30) and can prevent grains from entering the circular cavity (30) are provided at the inner wall of the partition cylinder (20). An air suction pipe (32) that communicates with the circular cavity (30) and is used to connect to an external dust suction device is provided on the circular bottom plate (11).

2. The dust removal device for a grain conveying hopper according to claim 1, wherein, A plurality of circumferentially distributed connecting seats (40) are provided on the outer side of the open end of the hopper (1), and the connecting seats (40) are detachably connected to the hopper (1). The upper end of the connecting seat (40) extends outward to form a connecting ear (41). The top surfaces of the connecting ears (41) on each connecting seat (40) are coplanar. A vertically distributed through hole (42) is provided on the connecting ear (41). A plurality of stud bolts (13) are fixedly provided on the circular bottom plate (11). After the stud bolts (13) pass through the through holes (42), they are locked by nuts (14).

3. The dust removal device for a grain conveying hopper according to claim 2, characterized in that, The inner surface of the connecting seat (40) is configured as an arc surface that fits the outer wall of the hopper (1). Connecting holes (43) are provided at both ends of the connecting seat (40). Threaded holes (100) are provided on the hopper (1) corresponding to the connecting holes (43). The connecting holes (43) are connected to the threaded holes (100) by bolts (101).

4. A grain conveying hopper dust removal device according to claim 1 or 2 or 3, characterized in that, The partition cylinder (20) includes a first conical cylinder (200) at the upper end and a second conical cylinder (201) at the lower end of the first conical cylinder (200). The first conical cylinder (200) is configured to be smaller at the top and larger at the bottom, and the second conical cylinder (201) is configured to be larger at the top and smaller at the bottom. The lower end of the first conical cylinder (200) is connected to the upper end of the second conical cylinder (201) through an arc transition surface (202). The air suction grooves are uniformly arranged circumferentially on the first conical cylinder (200).

5. The dust removal device for a grain conveying hopper according to claim 4, characterized in that, The lower end of the second conical cylinder (201) extends downward to form a limiting cylinder (203) that extends into the material inlet.

6. The dust removal device for a grain conveying hopper according to claim 5, characterized in that, The first conical cylinder (200), the second conical cylinder (201), and the limiting cylinder are of an integral structure. The outer wall at the lower end of the second conical cylinder (201) is fixedly welded to the inner wall of the circular bottom plate (11).

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