An automatic sampling device for refined flour

Abstract

The present invention discloses an automatic sampling device for fine powder, which relates to the technical field of ore fine powder sampling. It includes a horizontal screw conveyor and a fixed pipe. The horizontal screw conveyor is located on one side of the fixed pipe. A fine powder drying and separating assembly for drying the sampled fine powder is fixedly installed on the top of the horizontal screw conveyor. A sampling assembly for automatic sampling is arranged on the top of the fixed pipe. After the sampling assembly samples the fine powder, it is processed by the fine powder drying and separating assembly to obtain dry fine powder. Through the mutual cooperation of the cyclone separator and the drying cylinder, the wet fine powder can be dried to ensure that the fine powder is in a powdery state, avoid the fine powder being interfered by moisture, ensure the accuracy of subsequent sampling detection, and also avoid the wet fine powder becoming sticky and affecting the smoothness of sampling, reducing the residue in the sampling device.

Description

Technical Field

[0001] The present invention relates to the technical field of ore concentrate sampling, and specifically to an automatic sampling device for concentrate. Background Art

[0002] A mine mainly includes one or more mining workshops (or mine shafts, pits, open-pit mines, etc.) and some auxiliary workshops. Most mines also include ore dressing plants (coal washing plants). Sampling and detection are required for mine concentrates.

[0003] In order to achieve the sampling of mine concentrates, Chinese Patent 2020101633223 provides an automatic sampling device for refined copper ore powder. During sampling, manual operation is not required, reducing the labor intensity and operation risks of workers. Multiple core samples can be taken in one sampling action, greatly improving work efficiency. However, the automatic sampling device in the above patent cannot dry the concentrates during the sampling process. Rainwater, water from mine cleaning vehicles, and other factors may enter during the transportation of the concentrates by trucks, causing sticking. This not only affects the smoothness of sampling and leaves residues of concentrates in the sampling device but also affects subsequent detection after sampling. Therefore, we provide an automatic sampling device for concentrates. Summary of the Invention

[0004] The purpose of the present invention is to provide an automatic sampling device for concentrates to solve the problems in the above background art that the automatic sampling device in the above patent cannot dry the concentrates during the sampling process, and rainwater, water from mine cleaning vehicles, and other factors may enter during the transportation of the concentrates by trucks, causing sticking, which not only affects the smoothness of sampling and leaves residues of concentrates in the sampling device but also affects subsequent detection after sampling.

[0005] The present invention can be realized through the following technical solutions: An automatic sampling device for concentrates includes a horizontal screw conveyor and a fixed pipe. The horizontal screw conveyor is located on one side of the fixed pipe. A concentrate drying and separating component for drying the sampled concentrates is fixedly installed on the top of the horizontal screw conveyor. A sampling component for automatic sampling is arranged on the top of the fixed pipe. After the sampling component samples the concentrates, it is processed by the concentrate drying and separating component to obtain dry concentrates.

[0006] A further technical improvement of the present invention lies in that: The sampling component includes a lift, which is fixedly installed on the top of the fixed pipe. The output end of the lift is fixedly connected to a vertical screw conveyor, and a second electric heating sleeve is sleeved on the outer wall of one side of the vertical screw conveyor.

[0007] A further technical improvement of the present invention lies in that: the fine powder drying and separating assembly includes a cyclone separator and a drying cylinder. The cyclone separator and the drying cylinder are both fixedly installed on the top of the horizontal screw conveyor, and the cyclone separator is located on one side of the drying cylinder. The cyclone separator is communicated with the horizontal screw conveyor.

[0008] A further technical improvement of the present invention lies in that: a receiving pipe is installed on the top of the drying cylinder. A feeding groove is formed on the outer wall of one side of the receiving pipe. There is a discharge pipe between the vertical screw conveyor and the receiving pipe and they are communicated through the discharge pipe to ensure that the vertical screw conveyor conveys the fine powder into the discharge pipe. One end of the discharge pipe extends into the feeding groove and is communicated to the inside of the receiving pipe.

[0009] A further technical improvement of the present invention lies in that: a motor is fixedly connected to the central position at the top of the drying cylinder by bolts. The output end of the motor is fixedly connected with a stirring rod. A first electric heating sleeve is sleeved on the outer wall of the drying cylinder. A first inner cavity and a second inner cavity are formed at a position below the stirring rod inside the drying cylinder. An electric heating plate is fixed in the first inner cavity. A second air extraction pump is installed inside the second inner cavity. The second air extraction pump communicates the first inner cavity and the internal space of the drying cylinder. The heated air is pumped into the internal space of the drying cylinder through the second air extraction pump, so as to heat and dry the fine powder containing moisture.

[0010] A further technical improvement of the present invention lies in that: a fixed ring is arranged at the bottom of the horizontal screw conveyor. A plurality of cylinders are arranged at equal angles on the outer wall of one side of the fixed ring. The output end of each cylinder is fixedly connected with a blanking hose. A sample box is arranged below the plurality of blanking hoses. A sample cylinder matching the number of the blanking hoses is arranged inside the sample box. The plurality of sample cylinders are symmetrically arranged inside the sample box.

[0011] A further technical improvement of the present invention lies in that: a blanking pipe is fixedly connected to the bottom of the horizontal screw conveyor at a position above the blanking hose by bolts. The horizontal screw conveyor is communicated with the blanking pipe. The dried fine powder is discharged through the blanking pipe by the horizontal screw conveyor.

[0012] A further technical improvement of the present invention lies in that: a camera and an infrared distance measuring sensor are fixedly connected to the outer wall of one side of the vertical screw conveyor. The camera is located on one side of the infrared distance measuring sensor. Photos are taken during sampling by the camera, and the distance between the bottom end of the vertical screw conveyor and the fine powder is measured by the infrared distance measuring sensor.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] The automatic sampling device for fine powder can extract fine powder at different depths in the carriage for sampling through the mutual cooperation of a horizontal screw conveyor, a vertical screw conveyor, and a lift, achieving rapid and efficient sampling of mine fine powder. The device has a high degree of automation, and the vehicle can achieve all-round sampling without discharging materials. Through the mutual cooperation of a cyclone separator and a drying cylinder, the wet fine powder can be dried to ensure that the fine powder is in a powdery state, avoiding interference of the fine powder by moisture, ensuring the accuracy of subsequent sampling and testing, and also preventing the fine powder from becoming sticky due to moisture, affecting the smoothness of sampling and reducing the residue in the sampling device. The distance between the bottom end of the vertical screw conveyor and the fine powder is measured by an infrared ranging sensor, so as to control the descending stroke of the vertical screw conveyor according to the height of the fine powder in the carriage. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] For the convenience of those skilled in the art to understand, the present invention will be further described below with reference to the accompanying drawings.

[0016] Figure 1 Schematic diagram of the overall structure of the present invention;

[0017] Figure 2 Schematic diagram of the internal structure of the drying cylinder of the present invention;

[0018] Figure 3 Schematic diagram of the internal structure of the horizontal screw conveyor of the present invention;

[0019] Figure 4 Side view of the material receiving pipe of the present invention;

[0020] Figure 5 Top view of the sample box of the present invention;

[0021] Figure 6 Bottom view of the vertical screw conveyor of the present invention.

[0022] In the figure: 1, horizontal screw conveyor; 2, fixed pipe; 3, cyclone separator; 4, drying cylinder; 5, lift; 6, vertical screw conveyor; 7, solenoid valve; 8, material receiving pipe; 9, discharge pipe; 10, feed trough; 11, protective cover; 12, connecting pipe; 13, first air extraction pump; 14, motor; 15, stirring rod; 16, first electric heating sleeve; 17, first inner cavity; 18, second inner cavity; 19, electric heating plate; 20, second air extraction pump; 21, first support beam; 22, second support beam; 23, weighbridge; 24, carriage; 25, fixed ring; 26, cylinder; 27, feeding hose; 28, sample box; 29, sample cylinder; 30, second electric heating sleeve; 31, feeding pipe; 32, camera; 33, infrared ranging sensor. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] To further elaborate on the technical means and effects adopted by the present invention to achieve the intended invention purpose, the following will describe in detail the specific implementation manners, structures, features, and their effects of the present invention in combination with the accompanying drawings and preferred embodiments.

[0024] Please refer to Figure 1-6 As shown, an automatic sampling device for fine powder includes a horizontal screw conveyor 1 and a fixed pipe 2. The top of the horizontal screw conveyor 1 is fixedly connected with a cyclone separator 3 and a drying cylinder 4 through bolts. The horizontal screw conveyor 1 is communicated with the cyclone separator 3 to ensure that the cyclone separator 3 conveys the dried fine powder into the horizontal screw conveyor 1. The cyclone separator 3 is located on one side of the drying cylinder 4;

[0025] The top of the fixed pipe 2 is fixedly connected with a lift 5 through bolts. The lift 5 is fixedly connected with a vertical screw conveyor 6 through the output end on its one side. A second electric heating sleeve 30 is sleeved on the outer wall of one side of the vertical screw conveyor 6. The top of the drying cylinder 4 is fixedly connected with a solenoid valve 7 through bolts. The top of the solenoid valve 7 is fixedly connected with a receiving pipe 8 through bolts. A feed slot 10 is opened on the outer wall of one side of the receiving pipe 8. An outlet pipe 9 is arranged between the vertical screw conveyor 6 and the receiving pipe 8 and the two are communicated through the outlet pipe 9 to ensure that the vertical screw conveyor 6 conveys the fine powder into the outlet pipe 9. One end of the outlet pipe 9 extends into the feed slot 10 and is communicated to the inside of the receiving pipe 8, facilitating the fine powder to directly fall into the receiving pipe 8;

[0026] Both the drying cylinder 4 and the receiving pipe 8 are communicated with the solenoid valve 7. The feeding of the drying cylinder 4 and the receiving pipe 8 is controlled through the solenoid valve 7. A protective cover 11 is fixedly connected with the top of the drying cylinder 4 at a position far from the solenoid valve 7 through bolts. A first air extraction pump 13 is fixedly connected with the inner wall of one side of the protective cover 11 through bolts. The drying cylinder 4 is communicated with the intake end of the first air extraction pump 13. The first air extraction pump 13 can extract the gas and fine powder in the drying cylinder 4. A connecting pipe 12 is fixedly connected between the first air extraction pump 13 and the cyclone separator 3 and the two are communicated through the connecting pipe 12. Under the action of the first air extraction pump 13, the gas containing fine powder is introduced into the cyclone separator 3;

[0027] At the central position at the top of the drying cylinder 4, a motor 14 is fixedly connected by bolts. The output end of the motor 14 is fixedly connected with a stirring rod 15. A first electric heating sleeve 16 is sleeved on the outer wall of the drying cylinder 4. A first inner cavity 17 and a second inner cavity 18 are formed at a position below the stirring rod 15 inside the drying cylinder 4. Among them, an electric heating plate 19 is fixedly connected by bolts on one inner wall of the first inner cavity 17. A second air extraction pump 20 is fixedly connected by bolts at the bottom inside the second inner cavity 18. The second air extraction pump 20 communicates the first inner cavity 17 and the inner space of the drying cylinder 4. The heated air is pumped into the inner space of the drying cylinder 4 through the second air extraction pump 20, so as to heat and dry the fine powder containing moisture.

[0028] At the bottom of the horizontal screw conveyor 1, a first support beam 21 is fixedly connected by bolts. At the bottom of the fixed pipe 2, a second support beam 22 is fixedly connected by bolts. There are two first support beams 21 and two second support beams 22. The two first support beams 21 and the two second support beams 22 are symmetrically arranged at the bottom of the horizontal screw conveyor 1 and the fixed pipe 2 respectively, ensuring the stable and firm support of the horizontal screw conveyor 1 and the fixed pipe 2.

[0029] A weighing scale 23 is jointly arranged at the position below the horizontal screw conveyor 1 and the fixed pipe 2. A carriage 24 is arranged above the weighing scale 23. Ore fine powder is contained inside the carriage 24.

[0030] A fixing ring 25 is arranged at the bottom of the horizontal screw conveyor 1. A plurality of air cylinders 26 are fixedly connected by bolts on one outer wall of the fixing ring 25. The output end of each air cylinder 26 is fixedly connected with a blanking hose 27. A sample box 28 is jointly arranged below the plurality of blanking hoses 27. A sample cylinder 29 matching the number of the blanking hoses 27 is arranged inside the sample box 28. Generally, four blanking hoses 27 are arranged. The plurality of sample cylinders 29 are symmetrically arranged inside the sample box 28, facilitating the separate sampling of a plurality of fine powders.

[0031] A blanking pipe 31 is fixedly connected by bolts at the position above the blanking hose 27 and close to the bottom of the horizontal screw conveyor 1. The horizontal screw conveyor 1 and the blanking pipe 31 are connected in communication. The horizontal screw conveyor 1 can discharge the dried fine powder through the blanking pipe 31.

[0032] A camera 32 and an infrared distance measuring sensor 33 are fixedly connected by bolts on one outer wall of the vertical screw conveyor 6. The camera 32 is located on one side of the infrared distance measuring sensor 33. Photos during sampling are taken through the camera 32. The distance between the bottom end of the vertical screw conveyor 6 and the fine powder is measured through the infrared distance measuring sensor 33, so as to control the descending stroke of the vertical screw conveyor 6 according to the height of the fine powder in the carriage 24.

[0033] When the present invention is in use, it is supported by the first support beam 21 and the second support beam 22, and the horizontal screw conveyor 1, the cyclone separator 3, the drying cylinder 4 and the elevator 5 are supported at a high place. When sampling, after the truck for transporting fine powder stops stably on the weighing scale 23, the output end of the elevator 5 drives the vertical screw conveyor 6 to move downward and insert into the fine powder in the carriage 24. The vertical screw conveyor 6 starts to work to transport the fine powder in the carriage 24 to the discharge pipe 9. The discharge pipe 9 transports the fine powder to the receiving pipe 8. The electromagnetic valve 7 is opened, and the fine powder enters the drying cylinder 4. During the transportation process of the fine powder inside the vertical screw conveyor 6, the second electric heating sleeve 30 on the outer wall of the vertical screw conveyor 6 works to generate heat to heat the fine powder;

[0034] The preheated fine powder enters the drying cylinder 4. The motor 14 drives the stirring rod 15 to rotate through the output end on one side thereof. The stirring rod 15 stirs the fine powder in the drying cylinder 4. The second air extraction pump 20 works to pump the air in the first inner cavity 17 into the internal space of the drying cylinder 4. The air is heated under the heating of the electric heating plate 19. The hot air dries the fine powder. Under the pumping action of the first air extraction pump 13, the moisture in the fine powder is carried by the hot air through the connecting pipe 12 into the cyclone separator 3, and the cyclone separator 3 separates the fine powder and the gas;

[0035] The separated fine powder is transported into the horizontal screw conveyor 1. The horizontal screw conveyor 1 works to discharge the dried fine powder through the blanking pipe 31. The output end of the cylinder 26 drives the blanking hose 27 to move below the blanking pipe 31. The blanking pipe 31 guides the fine powder into the blanking hose 27. Through the transportation of the blanking hose 27, the fine powder enters the sample cylinder 29 to realize the sampling of the fine powder.

[0036] It should be noted that the electrical components appearing in the embodiments are all electrically connected to the external main controller and the 220V mains electricity, and the main controller can be a conventional known device such as a computer that plays a control role.

[0037] The above is only a preferred embodiment of the present invention, and it is not intended to limit the present invention in any form. Although the present invention has been disclosed as above with a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to equivalent embodiments by using the disclosed technical content within the scope of the technical solution of the present invention. However, as long as it does not depart from the content of the technical solution of the present invention, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. An automatic sampling device for refined powder, comprising a horizontal screw conveyor (1) and a fixed pipe (2). The horizontal screw conveyor (1) is located on one side of the fixed pipe (2), and is characterized in that, A fine powder drying and separating assembly for drying the sampled fine powder is fixedly installed at the top of the horizontal screw conveyor (1). A sampling assembly for automatic sampling is provided at the top of the fixed pipe (2). After the sampling assembly samples the fine powder, the dried fine powder is obtained through the treatment of the fine powder drying and separating assembly. The sampling assembly includes a lift (5) fixedly installed at the top of the fixed pipe (2). The output end of the lift (5) is fixedly connected to a vertical screw conveyor (6). A second electric heating sleeve (30) is sleeved on the outer wall of one side of the vertical screw conveyor (6). The fine powder drying and separating assembly includes a cyclone separator (3) and a drying cylinder (4). Both the cyclone separator (3) and the drying cylinder (4) are fixedly installed at the top of the horizontal screw conveyor (1), and the cyclone separator (3) is located on one side of the drying cylinder (4). The cyclone separator (3) is communicated with the horizontal screw conveyor (1). A receiving pipe (8) is installed at the top of the drying cylinder (4). A feeding groove (10) is formed on the outer wall of one side of the receiving pipe (8). An outlet pipe (9) is provided between the vertical screw conveyor (6) and the receiving pipe (8), and the two are communicated through the outlet pipe (9) to ensure that the vertical screw conveyor (6) conveys the fine powder into the outlet pipe (9). One end of the outlet pipe (9) extends into the feeding groove (10) and is communicated to the inside of the receiving pipe (8). A camera (32) and an infrared ranging sensor (33) are fixedly connected to the outer wall of one side of the vertical screw conveyor (6) by bolts. The camera (32) is located on one side of the infrared ranging sensor (33). Photos are taken during sampling by the camera (32), and the distance between the bottom end of the vertical screw conveyor (6) and the fine powder is measured by the infrared ranging sensor (33).

2. The automatic sampling device for fine powder according to claim 1, wherein, A motor (14) is fixedly connected to the central position at the top of the drying cylinder (4) by bolts. The output end of the motor (14) is fixedly connected to a stirring rod (15). A first electric heating sleeve (16) is sleeved on the outer wall of the drying cylinder (4). A first inner cavity (17) and a second inner cavity (18) are formed at the position below the stirring rod (15) inside the drying cylinder (4). An electric heating plate (19) is fixed in the first inner cavity (17), and a second air extraction pump (20) is installed inside the second inner cavity (18). The second air extraction pump (20) communicates the first inner cavity (17) with the internal space of the drying cylinder (4). The heated air is pumped into the internal space of the drying cylinder (4) by the second air extraction pump (20) to heat and dry the fine powder containing moisture.

3. The automatic sampling device for refined powder according to claim 1, characterized in that A fixed ring (25) is provided at the bottom of the horizontal screw conveyor (1). A plurality of cylinders (26) are equiangularly arranged on the outer wall of one side of the fixed ring (25). The output end of each cylinder (26) is fixedly connected to a blanking hose (27). A sample box (28) is provided below the plurality of blanking hoses (27). A sample cylinder (29) matching the number of the blanking hoses (27) is arranged inside the sample box (28). The plurality of sample cylinders (29) are symmetrically arranged inside the sample box (28).

4. The automatic sampling device for fine powder according to claim 3, wherein At the position above the bottom of the horizontal screw conveyor (1) near the blanking hose (27), a blanking pipe (31) is fixedly connected by bolts. The horizontal screw conveyor (1) is communicated with the blanking pipe (31), and the dried fine powder is discharged through the blanking pipe (31) by the horizontal screw conveyor (1).

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