Discharging device capable of preventing dust raising

Abstract

The utility model relates to a discharging device capable of preventing dust raising, which comprises a discharging hopper, a conical plug is mounted in the discharging hopper in a matched manner, a blanking passage is formed between the outer side wall of the conical plug and the inner layer wall of the discharging hopper, a first discharging pipe is concentrically mounted at the bottom end outside the discharging hopper, and a second discharging pipe is concentrically mounted outside the first discharging pipe. A dust removal gap is formed between the inner side wall of the second discharging pipe and the outer side wall of the first discharging pipe; materials falling into the discharging hopper enter the first discharging pipe through the discharging channel, and therefore discharging is completed through the first discharging pipe. A first dust removal opening is formed in the side wall face of the second discharging pipe, and dust generated when materials are discharged through the first discharging pipe is sucked out of the second discharging pipe through the first dust removal opening. By arranging the discharging device, the amount of dust generated during material discharging can be reduced, meanwhile, dust can be sucked away, and therefore dust pollution on a loading site can be greatly avoided, the requirement for installation conditions is low, and the manufacturing cost is low.

Description

Technical Field

[0001] The utility model relates to the technical field of automatic quantitative scales, in particular to a discharging device capable of preventing dust. Background Art

[0002] Bulk material weighing scale is an automated device used to weigh bulk materials, and can automatically control the loading process according to the preset weight parameters to ensure the weight of the loaded materials is accurate. In the process of large-scale centralized transportation of agricultural products mainly based on grain (such as soybeans, corn, rice, wheat, barley, millet, grains, etc.), feed raw materials (such as soybean meal, rapeseed meal, corn distiller's grains, peanut meal, rapeseed meal, etc.), feed products and feed additives, the materials are transferred to the transport vehicle through the bulk material weighing scale, so as to obtain the weight of the materials loaded on the transport vehicle.

[0003] In the prior art, since the materials handled by the bulk material weighing scale always inevitably contain dust, during the process of using the bulk material weighing scale for loading, a large amount of dust will escape and float along with the materials, resulting in very serious dust pollution at the loading site. Utility Model Content

[0004] In view of the shortcomings of the above-mentioned existing production technology, the applicant provides a discharge device that can prevent dust. By setting up the discharge device, the amount of dust generated when the material is discharged can be reduced, and the dust can be sucked away at the same time, thereby greatly avoiding dust pollution at the loading site. It has low requirements on installation conditions and low production cost.

[0005] The technical solution adopted by the utility model is as follows:

[0006] A discharge device capable of preventing dust, comprising a discharge hopper with a hollow interior, a conical plug being installed in the discharge hopper, a discharge passage with a radial width decreasing from top to bottom being formed between the outer wall of the conical plug and the inner wall of the discharge hopper, a first discharge pipe being installed concentrically at the bottom end of the outer side of the discharge hopper, a second discharge pipe being installed concentrically outside the first discharge pipe, and a cylindrical ring-shaped dust removal gap being formed between the inner side wall of the second discharge pipe and the outer side wall of the first discharge pipe;

[0007] The material falling into the discharge hopper enters the first discharge pipe through the material dropping passage, thereby completing the discharge through the first discharge pipe;

[0008] A first dust removal port is provided on the side wall surface of the second discharge pipe, and dust generated when the material is discharged through the first discharge pipe is sucked out to the outside of the second discharge pipe through the first dust removal port.

[0009] As a further improvement of the above technical solution:

[0010] The first discharge pipe and the second discharge pipe are both hollow cylindrical.

[0011] The axial length of the second discharge pipe is 350 mm-450 mm longer than the axial length of the first discharge pipe.

[0012] The radial width of the dust removal gap is 50 mm to 80 mm.

[0013] The discharge hopper is arranged concentrically with the conical plug.

[0014] The structure of the discharge hopper is as follows: it includes a connecting hopper which is cylindrical and hollow inside, a connecting flange is circumferentially arranged at the top end of the outer wall of the connecting hopper, a guide hopper is connected to the bottom end of the connecting hopper, and the guide hopper is in the shape of an inverted frustum, so that the side wall surface of the guide hopper is inclined.

[0015] A material level sensor is installed above the side wall surface of the guide hopper.

[0016] The structure of the tapered plug is as follows: it comprises a conical portion in a cone shape, and a truncated cone portion in an inverted truncated cone shape is coaxially arranged at the bottom of the conical portion.

[0017] The discharging device is installed at the bottom of the bulk material weighing scale.

[0018] The structure of the bulk material weighing scale is as follows: it includes a cylindrical shell with a hollow interior, a second dust removal port is provided on the side wall surface of the shell, a feed pipe and a metering cylinder are cooperatively installed inside the shell, one end of the feed pipe extends to the outside of the shell, and at the same time, the other end of the feed pipe is connected to the feed end of the metering cylinder, and the discharge end of the metering cylinder corresponds to the discharge hopper.

[0019] The beneficial effects of the utility model are as follows:

[0020] The utility model has a compact and reasonable structure and is easy to operate. By arranging the first discharge pipe, the second discharge pipe, the discharge hopper and the conical plug, the overflow and escape of dust can be suppressed during the material discharging process, and a small amount of scattered dust can be completely sucked out, thereby reducing dust pollution at the loading site and ensuring a clean and orderly loading environment.

[0021] The utility model also has the following advantages:

[0022] (1) The utility model can remove the dust generated by the material in the discharge hopper and the dust in the second discharge pipe by arranging the first dust removal port and the second dust removal port, and can remove most of the dust in the material, thereby ensuring that no matter how high the material falls from when entering the warehouse, it will not cause pollution to the loading site.

[0023] (2) The utility model provides a conical plug, the first inclined surface of which can guide the material to fall in an orderly manner, which can effectively prevent the dust from being stirred up due to the stirring of the material; a discharge gap is formed between the second inclined surface and the discharge hopper, which can squeeze the material and further prevent the dust from escaping into the external environment when the material is discharged.

[0024] (3) The utility model provides a dust removal gap to ensure that when the first dust removal port sucks air, it only sucks away the escaping dust, and does not suck away the material, thereby protecting the material.

[0025] (4) The utility model is provided with a material level sensor, which can automatically control the amount of air suction according to the material level in the discharge hopper, thereby dynamically controlling the dust removal effect and optimally matching the amount of material in the discharge hopper.

[0026] (5) The utility model does not limit the height of the bulk material weighing scale from the discharge end to the transport vehicle used for loading, thereby not limiting the height and size of the transport vehicle, and has high flexibility in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of the utility model.

[0028] Figure 2 It is a structural schematic diagram of the discharge hopper in the utility model.

[0029] Figure 3 It is a structural schematic diagram of the conical plug in the utility model.

[0030] Figure 4 It is a schematic diagram of the installation structure of the first discharge pipe and the second discharge pipe in the utility model.

[0031] Figure 5 It is a schematic diagram of the utility model when working.

[0032] Among them: 1. First discharge pipe; 2. Second discharge pipe; 3. Discharge hopper; 4. First dust removal port; 5. Conical plug; 6. Level sensor; 7. Feed pipe; 8. Second dust removal port; 9. Shell; 10. Measuring cylinder; 11. Dropping passage; 12. Dust removal gap;

[0033] 301, connecting hopper; 302, guiding hopper; 303, connecting flange;

[0034] 501, cone portion; 502, truncated cone portion. DETAILED DESCRIPTION

[0035] The specific implementation of the present utility model is described below in conjunction with the accompanying drawings.

[0036] The structure and functions of the utility model are as follows:

[0037] like Figure 1-Figure 5 As shown, a discharge device capable of preventing dust emission comprises a discharge hopper 3 with a hollow interior, a conical plug 5 is installed inside the discharge hopper 3, a discharge passage 11 with a radial width decreasing from top to bottom is formed between the outer wall of the conical plug 5 and the inner wall of the discharge hopper 3, a first discharge pipe 1 is concentrically installed at the bottom end of the outside of the discharge hopper 3, a second discharge pipe 2 is concentrically installed outside the first discharge pipe 1, and a cylindrical ring-shaped dust removal gap 12 is formed between the inner wall of the second discharge pipe 2 and the outer wall of the first discharge pipe 1; the material falling into the discharge hopper 3 enters the first discharge pipe 1 through the discharge passage 11, and the discharge is completed through the first discharge pipe 1; a first dust removal port 4 is provided on the side wall surface of the second discharge pipe 2, and the dust generated when the material is discharged through the first discharge pipe 1 is sucked out to the outside of the second discharge pipe 2 through the first dust removal port 4. The utility model can suppress the shaking of materials when the materials are discharged, thereby reducing the dust suppression amount; at the same time, it can absorb the dust escaping from the materials, thereby avoiding pollution of the loading site.

[0038] like Figure 5 As shown, the discharging device of the utility model is used on a bulk material weighing scale. Specifically, the discharging device of the utility model is installed at the bottom of the bulk material weighing scale;

[0039] The structure of the bulk material weighing scale is as follows: it includes a cylindrical and hollow shell 9, a second dust removal port 8 is provided on the side wall of the shell 9, a feed pipe 7 and a metering cylinder 10 are installed in the shell 9, one end of the feed pipe 7 extends out of the shell 9, and the other end of the feed pipe 7 is connected to the feed end of the metering cylinder 10, and the discharge end of the metering cylinder 10 corresponds to the discharge hopper 3;

[0040] The second dust removal port 8 is used to suck out the dust inside the hopper 3 and the bulk material weighing scale;

[0041] The discharge hopper 3 of the discharge device is fixed to the bottom of the shell 9, and the discharge hopper 3 is fixed to the bottom of the shell 9 through the connecting flange 303. At the same time, the discharge hopper 3 is made concentric with the shell 9, thereby completing the connection between the discharge device and the bulk material weighing scale.

[0042] like Figure 1 As shown, the discharging device of the utility model comprises a first discharging pipe 1, a second discharging pipe 2, a discharging hopper 3, a conical plug 5, and a material level sensor 6;

[0043] like Figure 1 , Figure 4 As shown, the first discharge pipe 1 and the second discharge pipe 2 are both hollow cylindrical;

[0044] The inner diameter of the first discharge pipe 1 is equal to the inner diameter of the small opening of the discharge hopper 3, so that all the materials in the material drop passage 11 can fall into the first discharge pipe 1, and the materials are discharged downward in the form of a regular cylindrical material column inside the first discharge pipe 1, ensuring that the materials do not disperse before entering the warehouse below the bulk material weighing scale;

[0045] A first dust removal port 4 is provided on the wall surface of the second discharge pipe 2, which can absorb the dust generated by the material falling in the first discharge pipe 1, further reducing or suppressing the dust escape amount of the discharged material column;

[0046] The axial length of the second discharge pipe 2 is 350mm-450mm longer than that of the first discharge pipe 1; since the amount of fugitive dust generated at the pipe opening at the bottom of the first discharge pipe 1 is the largest, by increasing the height of the second discharge pipe 2, the fugitive dust generated when the material column just leaves the first discharge pipe 1 can be first dispersed in the second discharge pipe 2, so that the dust can be sucked away through the first dust removal port 4;

[0047] The first discharge pipe 1 and the second discharge pipe 2 are arranged concentrically to form a dust removal gap 12. The single-side radial width of the dust removal gap 12 is 50mm-80mm. When the first dust removal port 4 sucks air, a negative pressure is formed in the dust removal gap 12, which can suck away the dust in the second discharge pipe 2. In addition, the dust removal gap 12 can ensure that when the first dust removal port 4 sucks air, only the escaping dust is sucked away, and the material will not be sucked away, thereby protecting the material.

[0048] The discharge hopper 3 is a hollow silo, which is used to completely receive a portion of the material weighed by the metering cylinder 10, so that the material in the metering cylinder 10 can be completely discharged;

[0049] like Figure 1-Figure 2 As shown, the structure of the discharge hopper 3 is as follows: it includes a cylindrical connecting hopper 301 with a hollow interior, a connecting flange 303 is provided at the top of the outer wall of the connecting hopper 301 along the circumference, and a guide hopper 302 is connected to the bottom end of the connecting hopper 301, and the guide hopper 302 is in the shape of an inverted truncated cone, so that the side wall surface of the guide hopper 302 is inclined;

[0050] The large opening of the guide hopper 302 is connected to the connecting hopper 301 , and the small opening is connected and fixed to the top pipe opening of the first discharge pipe 1 .

[0051] like Figure 1 , Figure 5 As shown, the conical plug 5 is fixed inside the discharge hopper 3, and the discharge hopper 3 and the conical plug 5 are arranged concentrically; specifically, they can be fixed by a support frame; in addition, the conical plug 5 is also arranged concentrically with the discharge port of the bulk material weighing scale;

[0052] like Figure 3As shown, the structure of the tapered plug 5 is as follows: it includes a conical portion 501 in the shape of a cone, and a truncated cone portion 502 in the shape of an inverted truncated cone is concentrically arranged at the bottom of the conical portion 501; wherein,

[0053] The side wall surface of the conical portion 501 forms a first inclined surface, and the side wall surface of the truncated cone portion 502 forms a second inclined surface;

[0054] The first slope guides the materials to fall in an orderly manner;

[0055] A material drop passage 11 is formed between the second inclined surface and the discharge hopper 3. The inclination angle of the second inclined surface is not equal to the inclination angle of the side wall of the discharge hopper 3, so that the radial width of the material drop passage 11 decreases along the falling direction of the material; that is, the material drop passage 11 is in a truncated cone ring shape, and its thickness decreases along the falling direction of the material.

[0056] When the metering cylinder 10 discharges the material, the material slides down through the first inclined surface of the conical plug 5. The first inclined surface can guide the material to fall in an orderly manner, and can avoid the disorderly falling of the material to generate a large amount of dust, thereby reducing the amount of dust generated during the falling process of the material;

[0057] The falling passage 11 with decreasing radial width along the falling direction of the material can squeeze the material, so that the dust wrapped on the outer surface of the material is not easily agitated, further reducing the amount of dust generated by the falling material;

[0058] The dust generated inside the first discharge pipe 1 and at the bottom of the first discharge pipe 1 can be sucked away through the first dust removal port 4;

[0059] In addition, the second dust removal port 8 provided on the wall of the housing 9 can absorb a small amount of dust generated by the material falling along the material dropping passage 11, thereby preventing the loading site from being polluted by dust;

[0060] In the present invention, the inclination angle of the second inclined surface, the inclination angle of the side wall of the discharge hopper 3, and the radial width of the material discharge passage 11 are all set accordingly according to different types of materials, thereby achieving maximum dust escape control.

[0061] like Figure 1 , Figure 5 As shown, a material level sensor 6 is installed on the side wall of the guide hopper 302, and the material level sensor 6 detects the material level in the hopper 3;

[0062] A weighing control box is provided in the bulk material weighing scale, and the weighing control box is electrically connected to the material level sensor 6;

[0063] The weighing control box can control the dust removal air volume (i.e., the amount of air suction at the first dust removal port 4 and the second dust removal port 8) according to the signal of the material level sensor 6, thereby dynamically controlling the dust removal effect and optimally matching the amount of material in the discharge hopper.

[0064] The working process of the utility model is as follows:

[0065] When the material is loaded onto a transport vehicle through a bulk material weighing scale, a discharging device is installed at the bottom of the bulk material weighing scale, and then the bulk material weighing scale is arranged above the cargo hold on the transport vehicle;

[0066] The material enters the metering cylinder 10 through the feed pipe 7, and the metering cylinder 10 is weighed and measured until the material in the metering cylinder 10 reaches a preset weight, and then the feeding is stopped;

[0067] Subsequently, the material in the metering cylinder 10 is discharged;

[0068] The material in the metering cylinder 10 first falls into the discharge hopper 3, and under the guidance of the first inclined surface of the conical plug 5, falls into the material drop passage 11 in an orderly manner. The dust generated by the material in the discharge hopper 3 is sucked away through the second dust removal port 8;

[0069] After the material is squeezed by the material dropping passage 11, the material falls into the first discharge pipe 1 to form a material column, thereby dropping the material in the form of a material column, and the dust generated by the material inside the first discharge pipe 1 and at the bottom of the first discharge pipe 1 is sucked away through the first dust removal port 4;

[0070] Finally, a certain amount of material falls into the cargo hold on the transport vehicle, completing a quantitative loading, and the remaining material is loaded multiple times according to the above process until all the materials are loaded.

[0071] The above description is an explanation of the utility model, not a limitation of the utility model. The scope of the utility model is defined by the claims. Any form of modification can be made within the protection scope of the utility model.

Claims

1. A discharging device capable of preventing dust, characterized in that: The invention comprises a discharge hopper (3) with a hollow interior, wherein a conical plug (5) is installed in the interior of the discharge hopper (3), and a material discharge passage (11) with a radial width decreasing from top to bottom is formed between the outer wall of the conical plug (5) and the inner wall of the discharge hopper (3); a first discharge pipe (1) is concentrically installed at the bottom end of the outside of the discharge hopper (3), and a second discharge pipe (2) is concentrically installed outside the first discharge pipe (1); and a cylindrical ring-shaped dust removal gap (12) is formed between the inner wall of the second discharge pipe (2) and the outer wall of the first discharge pipe (1); The material falling into the discharge hopper (3) enters the first discharge pipe (1) through the discharge passage (11), thereby completing the discharge through the first discharge pipe (1); A first dust removal port (4) is provided on the side wall surface of the second discharge pipe (2), and dust generated when the material is discharged through the first discharge pipe (1) is sucked out to the outside of the second discharge pipe (2) through the first dust removal port (4).

2. A discharge device capable of preventing dust as claimed in claim 1, characterized in that: The first discharge pipe (1) and the second discharge pipe (2) are both in the shape of hollow cylinders.

3. A discharge device capable of preventing dust as claimed in claim 1, characterized in that: The axial length of the second discharge pipe (2) is 350 mm to 450 mm longer than the axial length of the first discharge pipe (1).

4. A discharge device capable of preventing dust as claimed in claim 1, characterized in that: The single-side radial width of the dust removal gap (12) is 50 mm to 80 mm.

5. A discharge device capable of preventing dust as claimed in claim 1, characterized in that: The discharge hopper (3) and the conical plug (5) are arranged concentrically.

6. A discharge device capable of preventing dust as claimed in claim 1, characterized in that: The structure of the discharge hopper (3) is as follows: it comprises a connecting hopper (301) which is cylindrical and hollow inside, a connecting flange (303) is provided at the top end of the outer wall of the connecting hopper (301) along the circumference, and a guide hopper (302) is connected to the bottom end of the connecting hopper (301), and the guide hopper (302) is in the shape of an inverted truncated cone, so that the side wall surface of the guide hopper (302) is inclined.

7. A discharge device capable of preventing dust as claimed in claim 6, characterized in that: A material level sensor (6) is installed above the side wall of the guide hopper (302).

8. A discharge device capable of preventing dust as claimed in claim 1, characterized in that: The structure of the tapered plug (5) is as follows: it comprises a conical portion (501) in the shape of a cone, and a truncated cone portion (502) in the shape of an inverted truncated cone is coaxially arranged at the bottom of the conical portion (501).

9. A discharge device capable of preventing dust as claimed in claim 1, characterized in that: The discharging device is installed at the bottom of the bulk material weighing scale.

10. A discharge device capable of preventing dust as claimed in claim 9, characterized in that: The structure of the bulk material weighing scale is as follows: it comprises a cylindrical shell (9) with a hollow interior, a second dust removal port (8) is provided on the side wall surface of the shell (9), a feed pipe (7) and a metering cylinder (10) are installed in the shell (9), one end of the feed pipe (7) extends to the outside of the shell (9), and the other end of the feed pipe (7) is connected to the feed end of the metering cylinder (10), and the discharge end of the metering cylinder (10) corresponds to the discharge hopper (3).

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