Dust suppression chute

Abstract

According to the dust suppression chute, a material receiving barrel is an inverted table body with a square upper opening and a round lower opening, and the lower portion of the material receiving barrel is connected with a discharging mechanism; the discharging mechanism is cylindrical, a plurality of discharging holes are formed in the wall of a cylinder body, and an inner support and an outer support are welded to the inner wall and the outer wall of the cylinder bottom respectively. The flow limiting cone is arranged at the lower part of the middle shaft position of the material receiving barrel and the discharging mechanism, the cone tip is upward, and an adjustable screw rod is welded on the cone tip and is connected with an inner supporting nut; the blanking barrel is barrel-shaped and comprises a cylindrical barrel body and a conical barrel bottom which are integrally formed; the lower end of the guide rod is welded on the outer support, a spring is sleeved outside the guide rod, the guide rod penetrates through a round hole in the edge of the top cover, and a limiting nut is arranged at the upper end of the guide rod; upper and lower ends of the spring are respectively connected with the top cover and the outer support. According to the utility model, the problem of dust pollution at the discharge port of the receiving hopper is mainly solved, and the dustproof pollution is further reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of bulk material production and transportation, and particularly relates to a dust suppression chute. Background Art

[0002] Bulk cargoes such as grain and fertilizer account for a large proportion of the port loading and unloading production, but due to their physical characteristics, dust pollution is common. Today, with the improvement of environmental protection systems, environmental protection has attracted great attention from all walks of life. At present, dust removal devices are installed on newly built and renovated specialized loading and unloading terminals for grain, fertilizer, etc., but on general terminals, due to factors such as power supply, site, and multiple cargo replacement and loading and unloading, such cargo loading and unloading mostly adopts traditional loading and unloading processes such as gantry crane → mobile hopper → car, or gantry crane → mobile hopper → mobile belt conveyor → warehouse. In areas prone to dust pollution, such as above the hopper, discharge port, and front end of the belt conveyor, simple dust prevention methods such as dust covers and dust curtains are mostly used, and the dust prevention effect is not ideal, and the dust pollution problem has not been fundamentally solved.

[0003] Therefore, it is an urgent problem that we need to solve to meet the characteristics of general terminal loading and unloading operations while achieving the effect of dust pollution control. Summary of the invention

[0004] In view of the problems existing in the prior art, the purpose of the utility model is to provide a dust suppression chute, focusing on solving the dust pollution problem at the discharge port of the receiving hopper, and further reducing dust pollution.

[0005] The purpose of this utility model is achieved through the following technical solutions:

[0006] A dust suppression chute, comprising a material receiving barrel, a material discharging mechanism, a flow limiting cone, a material discharging barrel, a top cover, a spring and a guide rod; the material receiving barrel is an inverted platform with a square upper opening and a circular lower opening, and the lower part is connected to the material discharging mechanism; the material discharging mechanism is cylindrical, comprising an integrally formed cylindrical barrel body and a conical barrel bottom, a plurality of material discharging holes are opened on the barrel body wall, and the inner and outer walls of the barrel bottom are respectively welded with inner supports and outer supports; the flow limiting cone is arranged at the lower part of the central axis position of the material receiving barrel and the material discharging mechanism, and The cone tip faces upward, and an adjustable screw is welded on the cone tip and connected to the inner support nut; the lower material barrel is cylindrical, including an integral cylindrical barrel body and a conical barrel bottom; the top cover is annular, fixed to the upper mouth of the lower material barrel with bolts, and a hole corresponding to the external support is provided on the top cover, the lower end of the guide rod is welded to the external support, and a spring is provided on the outside, the guide rod passes through the circular hole on the edge of the top cover, and a limit nut is provided on the upper end; the upper and lower ends of the spring are respectively connected to the top cover and the external support.

[0007] Furthermore, the material receiving barrel, the material discharging mechanism, the flow limiting cone, the material discharging barrel and the top cover are all formed by processing and welding steel plates.

[0008] Furthermore, the external supports are arranged in three groups, with an angle of 120° between each two groups; each group of external supports corresponds to a group of guide rods and springs.

[0009] Furthermore, the diameter of the circular discharge port at the bottom of the discharge mechanism is smaller than the diameter of the largest circle of the flow-limiting cone; the diameter of the discharge port of the discharge barrel is slightly smaller than the diameter of the largest circle of the flow-limiting cone.

[0010] Compared with the prior art, the utility model has the following beneficial effects:

[0011] 1. The dust suppression chute described in the utility model distributes the material evenly at the discharge port formed by the barrel and the lower part of the flow limiting cone through the ingenious design of the discharge mechanism, the flow limiting cone and the barrel. The material falls by its own weight to form a hollow stable material flow, so that a certain air pressure difference is formed inside and outside the material flow. The air outside the material flow continuously flows into the inside of the material flow, forcing the dust in the material flow column to be unable to overflow and concentrate inside the material flow, thereby playing a role in dust suppression and significantly improving the dust suppression effect.

[0012] 2. The dust suppression chute described in the utility model adopts spring support through the barrel. According to the amount of material in the barrel, the combination of the barrel and the top cover can be moved up and down to adjust the flow of goods, thereby improving the work efficiency when the upper material is sufficient and avoiding the dust overflow caused by the interruption of flow when the upper material is insufficient.

[0013] 3. The dust suppression chute described in the utility model can adjust the material flow size through a flow-limiting cone with an adjusting screw according to goods of different specific gravities and the actual conditions of on-site operations, so as to achieve the best dust suppression effect for different goods.

[0014] 4. The dust suppression chute described in the utility model has a simple structure, small investment, no energy consumption, low operation and maintenance costs, and high practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0016] Figure 1 is a three-dimensional assembly diagram of the dust suppression chute;

[0017] Figure 2 is a cross-sectional view of the dust suppression chute;

[0018] Figure 3 It is a top view of the dust suppression chute.

[0019] In the figure, 1-receiving barrel, 2-discharging mechanism, 201-inner support, 202-outer support, 203-discharging hole, 3-flow limiting cone, 301-screw rod, 4-discharging barrel, 5-top cover, 6-spring, 7-guide rod, 701-limiting nut. DETAILED DESCRIPTION

[0020] Example 1

[0021] like Figure 1-Figure 3 As shown, this embodiment provides a dust suppression chute, including a material receiving barrel 1, a discharging mechanism 2, a flow limiting cone 3, a discharging barrel 4 and a top cover 5; the material receiving barrel 1 is made of steel plates processed and welded, and is an inverted table with a square upper opening and a circular lower opening, and the lower part is connected to the discharging mechanism 2; the discharging mechanism 2 is cylindrical, including an integrally formed cylindrical barrel body and a conical barrel bottom, a plurality of discharging holes 203 are opened on the barrel wall, and the inner and outer walls of the barrel bottom are respectively welded with an inner support 201 and an outer support 202; the flow limiting cone 3 is arranged at the lower part of the central axis position of the material receiving barrel 1 and the discharging mechanism 2, and the cone tip is upward, and the cone tip is on the An adjustable screw rod 301 is welded and connected with the nut of the inner support 201; the lower material barrel 4 is cylindrical and is made of steel plates processed and welded, including an integral cylindrical barrel body and a conical barrel bottom; the top cover 5 is annular and is fixed to the upper mouth of the lower material barrel 4 with bolts, and a hole corresponding to the outer support 202 is provided on the top cover 5, and the lower end of the guide rod 7 is welded to the outer support 202, and a spring 6 is provided on the outside thereof, and the guide rod 7 passes through the circular hole on the edge of the top cover 5, and a limiting nut 701 is provided on the upper end thereof to prevent the lower material barrel 4 from detaching from the guide rod; the upper and lower ends of the spring 6 are respectively connected to the top cover 5 and the outer support 202.

[0022] The outer supports 202 are provided in three groups in total, and an angle of 120° is formed between every two groups; each group of outer supports corresponds to a group of guide rods 7 and springs 6.

[0023] The diameter of the circular discharge port at the bottom of the discharge mechanism 2 is smaller than the diameter of the largest circle of the flow-limiting cone 3 ; the diameter of the discharge port of the discharge barrel 4 is slightly smaller than the diameter of the largest circle of the flow-limiting cone 3 .

[0024] Brief description of working principle: In the initial operation, under the action of spring 6, the gap between the discharge port of the lower material barrel 4 and the flow limiting cone 3 is the smallest. After the receiving barrel 1 receives the material, the material is first fed through the lower circular hole of the discharge mechanism 2. Because the diameter of the circular discharge port at the bottom of the discharge mechanism 2 is smaller than the diameter of the flow limiting cone 3, the material flows out from the smaller circular gap between the discharge port of the lower material barrel 4 and the flow limiting cone 3 evenly along the cone surface, and quickly forms a hollow material flow; as the amount of material received by the receiving barrel 1 increases, the material quickly blocks the circular hole at the bottom of the discharge mechanism 2, and the material also flows into the lower material barrel 4 from a number of rectangular discharge holes 203 on the cylindrical wall. As the material gradually Step by step, the combination of the lower material barrel 4 and the top cover 5 overcomes the resistance of the spring 6, and slowly moves downward under the guidance of the guide rod 7, so that the gap between the discharge port of the lower material barrel 4 and the flow limiting cone 3 slowly increases until it stabilizes in a certain interval. At this time, a hollow stable material flow matching the process efficiency is formed; and when the material in the lower material barrel 4 is reduced to a certain amount, the combination of the lower material barrel 4 and the top cover 5 is subjected to the reaction force of the spring 6, and slowly moves upward under the guidance of the guide rod 7, so that the gap between the discharge port of the lower material barrel 4 and the flow limiting cone 3 slowly decreases, reducing the cargo flow, and ensuring that there is a hollow stable material flow during the period of insufficient supply. In short, the dust suppression chute can change with the upstream feeding situation, and in a certain effective falling section, it always maintains the formation of a hollow stable material flow, and the external air pressure of the hollow material flow is higher than the internal air pressure. Under the action of the air pressure difference, the air outside the material flow forces the dust of the material flow column to not overflow and concentrate inside the material flow, thereby playing a role in dust suppression.

[0025] According to the goods with different specific gravities and the actual conditions of on-site operations, the flow size can be adjusted through the flow-limiting cone 3 with the adjusting screw 301 to achieve the best dust suppression effect for different goods.

[0026] Finally, it should be noted that the above is only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model is described in detail with reference to the preferred arrangement scheme, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model.

Claims

1. A dust suppression chute, characterized in that: The invention comprises a material receiving barrel (1), a material discharging mechanism (2), a flow limiting cone (3), a material discharging barrel (4), a top cover (5), a spring (6) and a guide rod (7); the material receiving barrel (1) is an inverted platform with a square upper opening and a circular lower opening, and the lower part is connected to the material discharging mechanism (2); the material discharging mechanism (2) is cylindrical, comprising an integrally formed cylindrical barrel body and a conical barrel bottom, a plurality of material discharging holes (203) are opened on the barrel wall, and the inner and outer walls of the barrel bottom are respectively welded with an inner support (201) and an outer support (202); the flow limiting cone (3) is arranged at the lower part of the central axis of the material receiving barrel (1) and the material discharging mechanism (2), with the cone tip facing upwards, and the cone tip facing upwards. An adjustable screw rod (301) is welded on the tip and connected to the inner support (201) nut; the lower material barrel (4) is cylindrical, including an integral cylindrical barrel body and a conical barrel bottom; the top cover (5) is annular and fixed to the upper opening of the lower material barrel (4) with bolts, and a hole corresponding to the outer support (202) is provided on the top cover (5); the lower end of the guide rod (7) is welded to the outer support (202), and a spring (6) is sleeved on the outside; the guide rod (7) passes through the circular hole on the edge of the top cover (5), and a limiting nut (701) is provided on the upper end; the upper and lower ends of the spring (6) are respectively connected to the top cover (5) and the outer support (202).

2. The dust suppression chute according to claim 1, characterized in that: The material receiving barrel (1), the material discharging mechanism (2), the flow limiting cone (3), the material discharging barrel (4) and the top cover (5) are all formed by processing and welding steel plates.

3. The dust suppression chute according to claim 1, characterized in that: The external supports (202) are arranged in three groups, with an angle of 120° between each two groups; each group of external supports corresponds to a group of guide rods and springs.

4. The dust suppression chute according to claim 1, characterized in that: The diameter of the circular discharge port at the bottom of the discharge mechanism (2) is smaller than the diameter of the largest circle of the flow-limiting cone (3); and the diameter of the discharge port of the discharge barrel (4) is smaller than the diameter of the largest circle of the flow-limiting cone (3).

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