Unpowered dust suppression environment-friendly hopper

Abstract

The utility model discloses an unpowered dust suppression environment-friendly hopper which comprises a cover plate, a circle of annular anti-overflow protective plate is welded to the bottom end of the cover plate, a plurality of bolt holes are formed in the cover plate in the circumferential direction, a protective chain lead screw and a spring lead screw are fixed to the cover plate through the bolt holes, and a protective chain is connected to the bottom end of the protective chain lead screw. The bottom end of the spring lead screw is connected with an extension spring, a conical bucket body is arranged below the anti-overflow protection plate, a plurality of fixed lifting lugs are welded to the middle of the outer side of the conical bucket body, the fixed lifting lugs are sequentially connected with a protection chain and the extension spring, and a plurality of bucket core pull rods are installed in the middle of the bottom end of the cover plate; according to the utility model, the self weight of equipment is reduced, the installation space is reduced, the overflow phenomenon of the hopper body is avoided, and the adaptability of the hopper to the fluctuation of the actual yield relative to the designed yield is improved. According to the hopper, the designed yield fluctuation is within + / -15%, and the dust suppression efficiency can reach 85% or above.

Description

Technical Field

[0001] The utility model relates to the technical field of hoppers, in particular to a non-powered dust suppression and environmentally friendly hopper. Background Art

[0002] In daily production and life, the dust-free dry bulk material unloading hopper in the main existing technical solutions has the following problems:

[0003] 1. Side feeding type unloading hopper (such as Figure 5 ): Feeding is done horizontally on the side of the bucket body, the upper end of the bucket body is closed, and the bucket body is made of a cylindrical tube spliced ​​with a conical tube. This type of unloading hopper is difficult to process and has a poor dust suppression effect. Under the designed production conditions, the dust suppression effect generally does not exceed 70%. Since this type of unloading hopper has poor adaptability to fluctuations in actual production relative to designed production, when the production fluctuation exceeds ±5%, the dust suppression effect is significantly attenuated. This type of unloading hopper has basically no dust suppression effect during the start-up and stop process, and will cause serious dust during the period.

[0004] 2. Top feed type discharge hopper (such as Figure 6 ): The material is fed from the upper end of the hopper, and the hopper body is made of a cylindrical tube spliced ​​with a conical tube. The static load and dynamic load of this type of unloading hopper are too large, and the load-bearing capacity of the lifting foundation and lifting components is too large; this type of unloading hopper is high, and the installation space requirement is too large; this type of unloading hopper is not equipped with an anti-overflow guard plate, and when the actual output fluctuates upward relative to the designed output, it will cause overflow and dust in the hopper.

[0005] Therefore, the market is in urgent need of developing a non-powered dust suppression and environmentally friendly hopper for unloading dry bulk materials to avoid the defects of the above-mentioned main existing technical solutions. Utility Model Content

[0006] The utility model provides a non-powered dust suppression environmentally friendly hopper, which can effectively reduce the dead weight of the equipment, reduce the installation space, avoid the overflow of the hopper, and increase the adaptability of the hopper to fluctuations in actual output relative to designed output. The dust suppression efficiency of the hopper can reach more than 85% within the output fluctuation of ±15%.

[0007] To achieve the above purpose, the utility model provides the following technical solutions: a non-powered dust suppression environmental protection hopper, comprising a cover plate, a circle of anti-overflow guard plate is welded at the bottom end of the cover plate, a plurality of bolt holes are opened along the circumferential direction of the cover plate, and a protective chain screw and a spring screw are fixed to the cover plate through the bolt holes;

[0008] The bottom end of the protection chain lead screw is connected with a protection chain;

[0009] The bottom end of the spring screw is connected with a tension spring;

[0010] A conical bucket is provided below the anti-overflow guard plate, and a plurality of fixed lifting ears are welded to the middle of the outer side of the conical bucket, and the fixed lifting ears are respectively connected to the protection chain and the tension spring;

[0011] A plurality of bucket core pull rods are installed at the middle of the bottom end of the cover plate, and a bucket core is connected to the bottom ends of the plurality of bucket core pull rods.

[0012] According to the above technical solution, the top end of the cover plate is connected to the upstream equipment;

[0013] The bottom end of the conical bucket body is a discharge port.

[0014] According to the above technical solution, the top and bottom ends of the bucket core are both conical.

[0015] According to the above technical solution, the anti-overflow guard plate is circular and can be inserted into the conical bucket to a certain depth. The conical bucket has a conical shape in shape of larger top and smaller bottom.

[0016] According to the above technical solution, a feed port is provided in the middle of the cover plate, and an angle α between the generatrix of the conical bucket body and the horizontal plane is between 45° and 75°.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] 1. The outer shape and inner cavity of the conical bucket are both conical cylindrical structures, with a larger upper part and a smaller lower part. This type of bucket has a relatively large material storage space, which greatly reduces the static load and dynamic load of the equipment, and can effectively reduce the strength requirements for the equipment hoisting foundation and hoisting materials, thereby increasing the safety factor. This type of bucket can save material costs, production costs and installation costs.

[0019] 2. The conical bucket body can greatly reduce the installation space and adapt to a wider range of installation conditions.

[0020] 3. The angle α between the cone bucket body generatrix and the horizontal plane is in the range of 45°-75°. The upper and lower parts of the bucket core are both cones. The cone at the upper end of the bucket core can make the material flow smooth and gentle, reduce internal dust, and avoid material accumulation after the operation.

[0021] The cone at the lower end of the bucket core and the inner wall of the conical bucket work together to guide the material at the lower end outlet, so that the material forms a material column after being discharged from the lower end outlet. The formation of a material column at the lower end outlet is a prerequisite for fully utilizing the principle of the Bernoulli equation during the falling process of the material flow to form a negative pressure inside the material column.

[0022] 4. An anti-overflow guard plate is installed on the cover plate. When the actual output fluctuates upward relative to the designed output, it can effectively prevent the raw materials from overflowing the hopper. The anti-overflow guard plate also has the function of preventing the dust generated after the material flow enters the hopper from overflowing. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0024] In the attached picture:

[0025] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0026] Figure 2 It is a cross-sectional structural schematic diagram of the utility model;

[0027] Figure 3 This is a schematic diagram of the horizontal plane angle α and the feeding direction structure of the utility model;

[0028] Figure 4 It is a schematic diagram of the test simulation structure of the utility model;

[0029] Figure 5 This is a schematic diagram of the feeding direction structure of the side-feeding type unloading hopper in the main existing technologies on the market;

[0030] Figure 6 This is a schematic diagram of the feeding direction of the discharge hopper of the upper feeding type in the main existing technologies on the market;

[0031] Numbers in the figure: 1. Cover plate; 2. Protection chain screw; 3. Spring screw; 4. Anti-overflow guard plate; 5. Protection chain; 6. Tension spring; 7. Fixed lifting ear; 8. Bucket core pull rod; 9. Conical bucket body; 10. Bucket core. DETAILED DESCRIPTION

[0032] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0033] Example: Figure 1-4 As shown, the utility model provides a technical solution, a non-powered dust suppression environmental protection hopper, including a cover plate 1, a circle of anti-overflow guard plate 4 is welded at the bottom end of the cover plate 1, and a plurality of bolt holes are opened along the circumferential direction of the cover plate 1, and the protection chain screw 2 and the spring screw 3 are fixed on the cover plate through the bolt holes;

[0034] The bottom end of the protection chain screw 2 is connected with a protection chain 5;

[0035] The bottom end of the spring screw 3 is connected with a tension spring 6;

[0036] A conical bucket body 9 is arranged below the anti-overflow guard plate 4. The anti-overflow guard plate 4 is circular and can be inserted into the conical bucket body to a certain depth. The outer shape and inner cavity of the conical bucket body 9 are both conical, with a large upper part and a small lower part, which is convenient for normal discharge. In order to facilitate normal operation, the top of the cover plate 1 is connected to the upstream equipment, and the bottom of the conical bucket body 9 is a discharge port. A plurality of fixed lifting ears 7 are welded on the middle part of the outer side of the conical bucket body 9, and the fixed lifting ears 7 are respectively connected to the protection chain 5 and the tension spring 6;

[0037] A plurality of bucket core pull rods 8 are installed in the middle of the bottom end of the cover plate 1, and a bucket core 10 is connected to the bottom ends of the plurality of bucket core pull rods 8, and the top and bottom ends of the bucket core 10 are both conical;

[0038] A feed port is provided in the middle of the cover plate 1, and an angle α between a generatrix of the conical bucket body 9 and a horizontal plane is between 45° and 75°.

[0039] The working principle and use process of the utility model are as follows: dry bulk materials enter from the feed port of the cover plate 1 at the upper end of the hopper, and the material flow impacts the bucket core 10 or the subsequent material accumulation surface in the conical bucket body 9, and the speed decreases sharply, the material accumulation in the conical bucket body 9 gradually increases, the tension spring 6 is stretched, the conical bucket body 9 falls, the annular gap between the inner wall slope of the conical bucket body 9 and the bucket core 10 increases, the output of the material flow at the lower end outlet increases, and the discharge output of the conical bucket body 9 at the lower end is equal to the feed output of the cover plate 1 at the upper end. When dynamic balance is reached, and there is a certain amount of accumulated material in the conical bucket 9, the material flow is discharged steadily and smoothly, and the air pressure P in the hopper is initially approximately equal to the atmospheric pressure P. The material flow at the lower end outlet is guided by the cone at the lower end of the bucket core 10 and the inner wall of the conical bucket 9 to form a dense material column. Under the action of gravity acceleration, the falling speed of the material column gradually increases. According to the Bernoulli equation (P+1 / 2ρv^2+ρgh=constant), when the speed of the fluid increases, the pressure in the fluid will decrease, so P 降落过程 <P 初 ≈P 大气压 Since the pressure in the falling material column is less than the atmospheric pressure, no overflow airflow carrying dust will be generated in the material column, so that the material unloading and transfer area maintains a clean atmospheric environment. The above process is the principle of dust suppression of the non-powered dust suppression environmental protection hopper.

[0040] Finally, it should be noted that the above description is only a preferred example of the present utility model and is not intended to limit the present utility model. Although the present utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A non-powered dust suppression environmental protection hopper, comprising a cover plate (1), characterized in that: A circle of anti-overflow guard plate (4) is welded at the bottom end of the cover plate (1), and a plurality of bolt holes are opened along the circumferential direction of the cover plate (1), and the protective chain lead screw (2) and the spring lead screw (3) are fixed to the cover plate (1) through the bolt holes; The bottom end of the protection chain lead screw (2) is connected to a protection chain (5); The bottom end of the spring screw (3) is connected to a tension spring (6); A conical bucket (9) is provided below the anti-overflow guard plate (4), and a plurality of fixed lifting ears (7) are welded at the middle of the outer side of the conical bucket (9), and the fixed lifting ears (7) are respectively connected to the protection chain (5) and the tension spring (6); A plurality of bucket core pull rods (8) are installed in the middle of the bottom end of the cover plate (1), and a bucket core (10) is connected to the bottom ends of the plurality of bucket core pull rods (8).

2. The unpowered dust suppression environmental protection hopper according to claim 1 is characterized in that: The top end of the cover plate (1) is connected to an upstream device; The bottom end of the conical bucket (9) is a discharge port.

3. The unpowered dust suppression environmental protection hopper according to claim 1 is characterized in that: The top and bottom ends of the bucket core (10) are both conical.

4. The unpowered dust suppression environmental protection hopper according to claim 1 is characterized in that: The anti-overflow guard plate (4) is circular and can be inserted into the conical bucket to a certain depth. The conical bucket (9) has a conical shape in both its outer shape and inner cavity, with a larger upper portion and a smaller lower portion.

5. The unpowered dust suppression environmental protection hopper according to claim 1 is characterized in that: A feed port is provided in the middle of the cover plate (1), and an angle α between the generatrix of the conical bucket body (9) and the horizontal plane is between 45° and 75°.

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