Dust collecting device for glutinous rice flour processing

Abstract

The utility model relates to the technical field of glutinous rice flour processing, in particular to a dust collecting device for glutinous rice flour processing, and aims to solve the technical problems that in the prior art, dust in a dust hopper is discharged and collected by opening and closing a flap valve, but the flap valve discharges the dust discontinuously, and the dust is easily raised by airflow when remaining in the dust hopper to form secondary dust raising. The lower end of the dust remover shell conical cylinder is communicated with a conveying cylinder, a conveying shaft is rotationally connected into the side wall of the end of the conveying cylinder, spiral blades are connected to the outer portion of the conveying shaft, the conveying cylinder in the conveying direction of the spiral blades is communicated with a gradually-shrunk conical cylinder, the outer contour of the spiral blades makes contact with the conveying cylinder and the inner wall of the gradually-shrunk conical cylinder, and the screw pitch of the spiral blades in the gradually-shrunk conical cylinder is gradually reduced. According to the dust collector, the spiral blade with the gradually-reduced screw pitch is matched with the gradually-reduced conical barrel, so that dust in the gradually-reduced conical barrel forms a compact blocking layer, the blocking layer is kept sealed, the lower part of the dust collector shell is sealed, the dust is conveyed out and collected, and the problem of discontinuous collection in the prior art is solved.

Description

A dust collection device for glutinous rice flour processing Technical Field

[0001] This utility model relates to the field of glutinous rice flour processing technology, specifically to a dust collection device for glutinous rice flour processing. Background Technology

[0002] During the processing of glutinous rice flour, a large amount of glutinous rice dust is generated, whether in grinding, drying, or other steps. For example, in the drying process, the fan circulates hot air inside the machine, and some dust is carried away by the airflow and dispersed into the air. This dispersed dust causes many hazards. On the one hand, glutinous rice flour processing plants are high-dust areas, and the dust permeating the air causes serious environmental pollution, affecting the air quality of the plant area and its surroundings. On the other hand, long-term exposure to such an environment can damage the respiratory system of workers, potentially leading to respiratory diseases, pneumoconiosis, and other occupational health problems. Furthermore, high-concentration dust environments are also high-risk environments; contact with open flames can easily cause dust explosions, posing a significant safety hazard.

[0003] Existing technology uses cyclone dust collectors for dust removal. During dust collection, the dust in the ash hopper is discharged and collected by opening and closing the flap valve. However, the ash discharge from the flap valve is not continuous. When the dust remains in the ash hopper, it is easily lifted by the airflow, forming secondary dust. Summary of the Invention

[0004] This invention addresses the technical problem in existing technologies where dust is discharged and collected from the ash hopper by opening and closing a flap valve, but the flap valve discharges dust intermittently, and the dust remaining in the ash hopper is easily stirred up by airflow, causing secondary dust pollution. Therefore, this invention provides a dust collection device for glutinous rice flour processing.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a dust collection device for glutinous rice flour processing, comprising: a dust collector shell, an air injection pipe tangentially connected to the upper part of the dust collector shell, a top cover connected to the upper end of the dust collector shell, an exhaust port provided in the center of the top cover, a conveying cylinder connected to the lower end of the cone-shaped dust collector shell, a conveying shaft rotatably connected to the inner side wall of the end of the conveying cylinder, a spiral blade connected to the outside of the conveying shaft, the conveying cylinder along the conveying direction of the spiral blade being connected to a tapered cone, the outer contour of the spiral blade contacting the inner wall of the conveying cylinder and the tapered cone, and the pitch of the spiral blade in the tapered cone gradually decreasing.

[0006] Preferably, the air injection pipe is a spiral pipe, and the upper cover has a spiral hole that is connected to the air injection pipes in the upper and lower parts.

[0007] Preferably, the transport cylinder and the tapered cylinder are connected with lugs, and the opposite lugs are connected by bolts.

[0008] Preferably, the conveying shaft and the spiral blade are disconnected at the joint between the conveying cylinder and the tapered cylinder. An internal threaded hole is opened in the shaft on one side of the disconnected part of the conveying shaft, and an external threaded post is connected to the shaft on the other side of the disconnected part of the conveying shaft. The tightening direction of the external threaded post and the internal threaded hole is the same as the conveying direction of the spiral blade. When the external threaded post and the internal threaded hole are tightened, the two parts of the spiral blade are engaged.

[0009] Compared with the prior art, the beneficial effects of this utility model are:

[0010] 1. By using spiral blades with gradually decreasing pitch in conjunction with a tapered cone, the dust inside the tapered cone forms a dense sealing layer. While maintaining a seal, the lower part of the dust collector casing is sealed, and the dust is transported out for collection, thus solving the problem of discontinuous collection in existing technologies.

[0011] 2. Both the inner wall and the spiral blades inside the tapered cone are subjected to high pressure and are prone to wear. By designing the tapered cone and the internal spiral blades for quick disassembly and assembly, rapid maintenance and replacement of parts can be achieved without delaying dust collection operations. Attached Figure Description

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

[0013] Figure 2 is a schematic cross-sectional view of the structure of this utility model.

[0014] In the diagram: 1. Dust collector housing; 2. Air injection pipe; 3. Top cover; 4. Exhaust port; 5. Conveyor cylinder; 6. Conveyor shaft; 7. Spiral blade; 8. Converging cone; 9. Spiral hole; 10. Support lugs; 11. Opposite support lugs; 12. Bolt; 12. External threaded post. Detailed Implementation

[0015] 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.

[0016] The rotary connection described in this device refers to the axial fixation of the bearing by mounting the bearing on the shaft, with a spring retaining ring groove provided on the shaft or shaft hole, and the rotation achieved by locking the elastic retaining ring in the retaining ring groove; the hinge connection refers to the connection method that allows movement through connecting parts such as hinges, pins, and short shafts.

[0017] The present invention will now be described in detail with reference to the accompanying drawings.

[0018] The following description, in conjunction with Figures 1-2, describes a dust collection device for glutinous rice flour processing, comprising: a dust collector housing 1, an air injection pipe 2 tangentially connected to the upper part of the dust collector housing 1, a top cover 3 connected to the upper end of the dust collector housing 1, an exhaust port 4 located at the center of the top cover 3, a conveying cylinder 5 connected to the lower end of the cone-shaped dust collector housing 1, a conveying shaft 6 rotatably connected to the inner side wall of the end of the conveying cylinder 5, a spiral blade 7 connected to the outside of the conveying shaft 6, the conveying cylinder 5 along the conveying direction of the spiral blade 7 being connected to a tapered cone 8, the outer contour of the spiral blade 7 contacting the inner wall of the conveying cylinder 5 and the tapered cone 8, and the pitch of the spiral blade 7 inside the tapered cone 8 gradually decreasing.

[0019] Dust-mixed airflow is injected into the dust collector shell 1 through the air injection pipe 2, forming a spiral airflow. Under centrifugal force, the dust separates from the airflow. The dust slides down the inner wall of the dust collector shell 1 and falls into the bottom conveyor cylinder 5. The clean airflow is discharged through the exhaust port 4. The power of the conveyor shaft 6 is turned on, and the conveyor shaft 6 drives the spiral blade 7 to rotate. The spiral blade 7 pushes the dust in the conveyor cylinder 5 into the converging cone 8. As the pitch of the spiral blade 7 in the converging cone 8 gradually decreases, combined with the reduction of the effective conveying volume in the converging cone 8, the dust and the spiral blade 7 cooperate to form a dense sealing layer. While maintaining the seal of the lower part of the dust collector shell 1, the sealing layer conveys the dust out for collection, solving the problem of discontinuous collection in the existing technology.

[0020] The air injection tube 2 is a spiral tube, and the upper cover 3 has a spiral hole 9 inside, which is connected to the air injection tubes 2 in the upper and lower parts.

[0021] Compared to the tangential airflow of the transmission, the spiral airflow discharged after being guided by the spiral injection pipe 2 and the spiral hole 9 is more stable and has a better centrifugal separation effect.

[0022] Both the transport cylinder 5 and the tapered cone 8 are connected to a support lug 10, and the opposing support lugs 10 are connected by bolts 11.

[0023] The tapered cone 8 is installed on the transport cylinder 5 by means of lugs 10 and bolts 11. When the tapered cone 8 wears out, it can be quickly disassembled and replaced without affecting the dust removal operation.

[0024] The conveying shaft 6 and the spiral blade 7 are disconnected at the joint between the conveying cylinder 5 and the tapered cylinder 8. An internal threaded hole is opened in the shaft on one side of the disconnected part of the conveying shaft 6, and an external threaded post 12 is connected to the shaft on the other side of the disconnected part of the conveying shaft 6. The screwing direction of the external threaded post 12 and the internal threaded hole is the same as the conveying direction of the spiral blade 7. When the external threaded post 12 and the internal threaded hole are screwed together, the two parts of the spiral blade 7 are engaged.

[0025] The front conveyor shaft 6 drives the rear conveyor shaft 6 to rotate through the engagement of the external threaded post 12 and the internal threaded hole. Since the tightening direction of the external threaded post 12 and the internal threaded hole is the same as the conveying direction of the spiral blade 7, the two conveyor shafts 6 will not loosen or separate while the conveyor shaft 6 drives the spiral blade 7 to convey. When tightened, the two spiral blades 7 are engaged to ensure uninterrupted conveying. After disassembling the tapered cone 8, the rear conveyor shaft 6 can be easily removed and replaced without affecting the dust removal operation.

[0026] In the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing" 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 or an electrical connection; 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. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0027] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0028] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A dust collection device for glutinous rice flour processing, comprising: The dust collector housing (1) has an air injection pipe (2) tangentially connected to the upper part of the dust collector housing (1), and a top cover (3) connected to the upper end of the dust collector housing (1). The top cover (3) has an exhaust port (4) in the center. The dust collector housing (1) has a conveying cylinder (5) connected to the lower end of the cone. A conveying shaft (6) is rotatably connected to the inner side wall of the end of the conveying cylinder (5). A spiral blade (7) is connected to the outside of the conveying shaft (6). The conveying cylinder (5) along the conveying direction of the spiral blade (7) is connected to the tapered cone (8). The outer contour of the spiral blade (7) is in contact with the inner wall of the conveying cylinder (5) and the tapered cone (8). The pitch of the spiral blade (7) in the tapered cone (8) gradually decreases.

2. The dust collection device for glutinous rice flour processing according to claim 1, characterized in that: The air injection pipe (2) is a spiral pipe, and the upper cover (3) is provided with a spiral hole (9), which is connected to the air injection pipes (2) in the upper and lower parts.

3. The dust collection device for glutinous rice flour processing according to claim 1, characterized in that: The transport cylinder (5) and the tapered cone (8) are connected by lugs (10), and the opposite lugs (10) are connected by bolts (11).

4. The dust collection device for glutinous rice flour processing according to claim 3, characterized in that: The conveying shaft (6) and the spiral blade (7) are disconnected at the joint between the conveying cylinder (5) and the tapered cylinder (8). An internal threaded hole is provided on one side of the conveying shaft (6) at the disconnection point, and an external threaded column (12) is connected on the other side of the conveying shaft (6). The screwing direction of the external threaded column (12) and the internal threaded hole is the same as the conveying direction of the spiral blade (7). When the external threaded column (12) and the internal threaded hole are screwed together, the two parts of the spiral blade (7) are engaged.

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