Adjustable raw material sampling device

Abstract

The application discloses an adjustable raw material sampling device and relates to the technical field of sampling and detecting devices. The structure of a receiving container in the prior art is optimized and improved. A vertical hard pipe body and a hard block body capable of floating up and down in the hard pipe body are combined to realize sample acquisition and storage, and the volume of the container is dynamically adjustable. The adjustable raw material sampling device is not prone to blockage, material residues, sample pollution, and has strong applicability and strong representativeness of the obtained sample during use.

Description

Technical Field

[0001] This invention relates to the field of sampling and testing equipment technology, and in particular to an adjustable raw material sampling device. Background Technology

[0002] Raw material sampling equipment is the core equipment for sampling and testing raw and auxiliary materials (such as iron ore, coke, coal powder, limestone, etc.) in steel enterprises. It can be used to obtain representative samples from raw and auxiliary materials.

[0003] In the prior art, the raw material sampling equipment installed on the belt conveyor mainly includes two types: one is the belt mid-section sampler, and the other is the belt head sampler;

[0004] The principle of the belt sampling machine is to use the rotation of the cutter to cut the moving material flow in the transverse full section and push the moving material flow on the belt into the discharge port. However, due to its own structure, it has problems such as difficulty in obtaining materials near the top surface of the belt, easy damage to the belt surface during sampling, and the fact that the sampled materials are mostly located near the side of the belt due to the material being squeezed out when obtaining the sample. The sampling results are also prone to bias.

[0005] The belt head sampler can overcome some of the shortcomings of the belt middle sampler mentioned above. Its principle is to use the movement of the container to receive the material flow output from the belt in a timely manner. However, due to its own structural limitations, it has problems such as easy clogging, easy material residue in the container causing sample contamination, fixed container volume making it difficult to adapt well to different materials (poor applicability), and the container easily becoming full before moving out of the material flow range during sampling (unable to continue receiving the material flow), which leads to the inability to collect the full cross-section of the material flow (poor uniformity of the sample source) and thus lack of representativeness of the sample.

[0006] Therefore, there is a need for an adjustable raw material sampling device that is not easily clogged during use, does not easily leave material residue, does not easily contaminate the sample, has strong applicability, and produces highly representative samples. Summary of the Invention

[0007] This application provides an adjustable raw material sampling device, which solves the technical problems of existing raw material sampling devices that are limited by their own structure, such as easy clogging, easy material residue in the container causing sample contamination, fixed container volume making it difficult to adapt to different materials, and difficulty in obtaining the full cross-section of the material flow during sampling, resulting in a lack of representativeness of the sample. The adjustable raw material sampling device achieves the technical effects of being less prone to clogging, less prone to material residue, less prone to sample contamination, highly applicable, and producing highly representative samples.

[0008] An embodiment of the present application provides an adjustable raw material sampling device, including a horizontal guide rail, a displacement carrier arm, and a vertical sampling body;

[0009] The horizontal guide rail is fixed on the frame of the belt conveyor;

[0010] The displacement carrier arm is a horizontal rigid frame, sliding and positioning on the horizontal guide rail and controlled to slide;

[0011] The vertical sampling body is fixed on the displacement carrier arm. When sampling is not required, it is located on one side of the belt conveyor;

[0012] The vertical sampling body includes a base tube, a top tube, a floating block, and a block displacement component for driving the floating block to move up and down;

[0013] The base tube is a vertical rigid square tube;

[0014] The top tube is a rigid square tube, fixed on the top of the base tube, the inner wall is coplanar with the inner wall of the base tube, the top surface is an inclined surface, and the top opening faces the top end of the belt;

[0015] The floating block is a rigid block, its cross-section is rectangular, the longitudinal section is trapezoidal, and the top surface is an inclined surface; the floating block slides in the space enclosed by the base tube and the top tube under the drive of the block displacement component, and the side wall is close to the inner side walls of the base tube and the top tube.

[0016] Preferably, it further includes a storage container;

[0017] The storage container is a container with an open top, fixed on the belt conveyor or the ground through a rigid bracket, located on one side of the belt conveyor and directly below the vertical sampling body when the vertical sampling body is not sampling, and is used to receive the collected samples output from the vertical sampling body.

[0018] Preferably, the vertical sampling body further includes a scraping component;

[0019] The scraping component includes a scraping plate, a guiding block, and a driving column;

[0020] The scraping plate is an inclined rectangular rigid plate body, closely arranged on the top surface of the top tube, and is controlled to slide under the restriction of the guiding block and the drive of the driving column to timely close and open the top opening of the top tube;

[0021] The guiding block is a horizontally arranged strip-shaped block with a U-shaped longitudinal section, and the number is two. The two guiding blocks are symmetrically arranged and are both fixed on the side wall of the top tube close to the displacement carrier arm;

[0022] The driving column is a horizontal column, with a built-in motor, positioned on the side wall of the top tube close to the displacement carrier arm, and teeth matching the gear groove at the bottom of the scraping plate are provided on the side wall, and it is controlled to rotate.

[0023] Preferably, a ring of bristles is positioned on the side wall of the floating block near the top surface; the presence of the bristles fills the gap between the floating block and the base pipe and the top pipe.

[0024] Preferably, the floating block has a side annular groove on its side wall near the top surface;

[0025] The side annular groove is an annular groove body; a brush carrier body is fitted in the side annular groove; the brush carrier body is a rubber ring with bristles densely distributed on one side, fitted on the side annular groove, with the bristles facing away from the bottom of the side annular groove, thereby filling the gap between the floating block and the foundation pipe and the top pipe.

[0026] Preferably, the bottom of the base tube is provided with an air cleaning rod on the side near the displacement arm; the air cleaning rod is a horizontally placed hollow rod with a strip-shaped opening on one side, and the internal space is connected to the air pump; after unloading, the floating block is controlled to detach from the bottom of the base tube, and at the same time, the air cleaning rod is controlled to blow air toward the top surface of the floating block to clean it.

[0027] Preferably, the floating block has an internal cavity; a built-in pump is installed in the internal cavity;

[0028] The bottom of the side annular groove is provided with at least one row of air jet holes, which are connected to the built-in pump and are used for controlled air jetting.

[0029] The brush carrier is provided with multiple ventilation holes; the ventilation holes are through holes and correspond one-to-one with the air jet holes; after unloading, the floating block is controlled to move up and down to blow and clean the inner walls of the base pipe and the top pipe, while cleaning the material adhering to the brush bristles.

[0030] Preferably, it also includes a reel assembly and a connecting channel;

[0031] The brush carrier is a rubber strip with bristles on one side, and the bristle-free side is in close contact with the bottom of the side annular groove.

[0032] The connecting channel is located at the bottom of the side annular groove, connecting the side annular groove with the inner cavity;

[0033] The drum assembly consists of two controlled rotating drums positioned within the inner cavity;

[0034] The brush carrier is fitted onto the side annular groove, which passes through the connecting channel; the two ends of the brush carrier are respectively wound and positioned on two rollers; when the two rollers rotate, they drive the brush carrier to move laterally and extend and retract as a whole.

[0035] Preferably, when the brush carrier moves, the jet holes and vent holes intersect to form irregularly shaped gas channels; in use, different cleaning effects can be achieved by controlling the relative positions of the jet holes and vent holes.

[0036] Preferably, the brush carrier is composed of multiple elastic rubber flat tubes carrying bristles spliced ​​together, with the multiple elastic rubber flat tubes parallel to each other and spliced ​​together to form a strip.

[0037] The jet nozzles are arranged in multiple rows, and the number of rows is the same as the number of elastic rubber flat tubes that make up the brush carrier body.

[0038] Ventilation holes are provided on both the side of the annular groove bottom near the side and the side of the annular groove bottom away from the side of the elastic rubber flat tube that makes up the brush carrier. The ventilation hole on the side of the annular groove bottom away from the side is less than half the size of the ventilation hole on the side of the annular groove bottom near the side.

[0039] During the cleaning process, by injecting air into the carrier brush, the difference in air inlet and outlet rates of the carrier brush can be used to cause the carrier brush to expand and contract as needed to shake off the material adhering to itself.

[0040] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0041] By optimizing and improving the structure of the receiving container in the existing technology, a combination of a vertically placed rigid tube and a rigid block that can float up and down inside the rigid tube is used to achieve sample acquisition and storage, while also realizing dynamic adjustment of the container volume. This effectively solves the technical problems of existing raw material sampling equipment, which are limited by their own structure, such as easy clogging, easy material residue in the container causing sample contamination, fixed container volume making it difficult to adapt to different materials, and difficulty in obtaining the full cross-section of the material flow during sampling, resulting in a lack of sample representativeness. Thus, the adjustable raw material sampling equipment achieves the technical effects of being less prone to clogging, less prone to material residue, less prone to sample contamination, highly applicable, and producing highly representative samples. Attached Figure Description

[0042] Figure 1 This is a schematic diagram of the overall structure of the adjustable raw material sampling device of this application;

[0043] Figure 2 This is a schematic diagram showing the positional relationship of the various components of the adjustable raw material sampling device of this application;

[0044] Figure 3 This is a schematic diagram showing the positional relationship between the adjustable raw material sampling device and the belt in this application.

[0045] Figure 4 This is a schematic diagram of the scraper assembly.

[0046] Figure 5 This is a schematic diagram showing the positional relationship between the foundation pipe and the jacking pipe;

[0047] Figure 6 This is a schematic diagram showing the positional relationship between the floating block and the block shifting component;

[0048] Figure 7 This is a schematic diagram illustrating the movement state of the floating block;

[0049] Figure 8 This is a schematic diagram showing the positional relationship between the floating block and the brush carrier.

[0050] Figure 9 This is a schematic diagram of the floating block structure;

[0051] Figure 10 Here is a simplified structural diagram of the brush carrier.

[0052] Figure 11 A schematic diagram showing the layout of the air-blowing cleaning rod;

[0053] Figure 12 This is a schematic diagram showing the layout of the vent holes on the brush carrier.

[0054] Figure 13 This is a schematic diagram showing the connection between the built-in pump and the jet nozzle;

[0055] Figure 14 This is a schematic diagram of the cross-sectional structure of the foundation pipe;

[0056] Figure 15 This is a schematic diagram of the internal structure of the floating block;

[0057] Figure 16 This is a schematic diagram showing the layout of the jet holes on the floating block;

[0058] Figure 17 A simplified diagram showing the positional relationship between the brush carrier and the roll assembly;

[0059] Figure 18 This is a schematic diagram of the structure of a brush carrier body composed of multiple flat tubes joined together.

[0060] Figure 19 This is a schematic diagram showing the layout of the vent holes on a brush carrier composed of multiple flat tubes.

[0061] Figure 20 This is a schematic diagram showing the connection between the built-in pump, heating components, and jet nozzle.

[0062] In the picture:

[0063] Horizontal guide rail 100, displacement arm 200, base pipe 310, jacking pipe 320, reinforced frame 330, floating block 340, side annular groove 341, air jet hole 342, built-in pump 343, carrier brush body 344, vent hole 345, heating component 346, inner cavity 347, connecting channel 348, drum assembly 349, vertical telescopic rod 351, carrier frame 352, scraper 361, guide block 362, drive column 363, air blowing cleaning rod 370, storage container 400. Detailed Implementation

[0064] To facilitate understanding of the present invention, a more complete description of this application will be given below with reference to the accompanying drawings, which illustrate preferred embodiments of the invention. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to enable a more thorough and complete understanding of the disclosure of the present invention.

[0065] It should be noted that the terms "vertical," "horizontal," "up," "down," "left," "right," and similar expressions used in this article are for illustrative purposes only and do not represent the only possible implementation.

[0066] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to limit the invention; the term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0067] Example 1

[0068] like Figures 1 to 7 As shown, the adjustable raw material sampling device of this application includes a horizontal guide rail 100, a shifting arm 200, a vertical sampling body, a storage container 400, a power component, and a control unit.

[0069] The transverse guide rail 100 is a rigid guide rail arranged laterally. Its length direction is the same as the width direction of the belt conveyor, and its length is greater than 1.3 times the width of the belt conveyor. It is fixed on the frame of the belt conveyor and located at the bottom of the belt (the belt of the belt conveyor) near the top of the belt. The transverse guide rail 100 is used to guide the movement of the shifting arm 200.

[0070] The displacement arm 200 is a horizontal rigid frame that supports the vertical sampling body and drives the vertical sampling body to move horizontally. It is slidably positioned on the horizontal guide rail 100 and slides under the coordinated control of the control unit and the power component. The length direction of the displacement arm 200 is perpendicular to the length direction of the horizontal guide rail 100.

[0071] The main body of the vertical sampling body is a tubular container that is vertically positioned and contains a rigid block that can move up and down. It is fixed on the shifting arm 200 and moves horizontally under the drive of the shifting arm 200. When sampling is not required, the vertical sampling body is located on one side of the belt conveyor.

[0072] The vertical sampling body includes a base pipe 310, a top pipe 320, a floating block 340, and a block shifting component for driving the floating block 340 to move up and down;

[0073] The base tube 310 is a vertically arranged rigid square tube with a smooth inner wall and a rectangular cross-section. Its length direction is perpendicular to the length direction of the displacement arm 200, and its height (axial length) is greater than 40 cm. One side is fixed to the displacement arm 200.

[0074] The jacking pipe 320 is a rigid square tube with its inner wall coplanar with the inner wall of the base pipe 310 and a thickness greater than 5 mm, which provides a certain impact resistance. The bottom surface of the jacking pipe 320 is flat, the top surface is sloping, and the top opening faces the top of the belt. The bottom end of the jacking pipe 320 is fixed to the top end of the base pipe 310. The jacking pipe 320 is directly or indirectly fixed to the displacement arm 200.

[0075] The floating block 340 is a rigid block with a rectangular cross-section, a trapezoidal longitudinal section, a flat bottom surface, and an inclined top surface with the same inclination angle as the top surface of the jacking pipe 320. The floating block 340 slides in the space enclosed by the base pipe 310 and the jacking pipe 320 under the action of the block displacement component. The sidewall of the floating block 340 is close to the inner sidewall of the base pipe 310 and the jacking pipe 320.

[0076] The block displacement assembly includes a vertical telescopic rod 351 and a carrier frame 352; the vertical telescopic rod 351 is a vertically arranged rigid telescopic rod that extends and retracts under the coordinated control of the control unit and the power assembly, and its top is fixed to the bottom of the floating block 340; the carrier frame 352 is a rigid frame fixed to the side wall of the base pipe 310 or the side wall of the top pipe 320; the vertical telescopic rod 351 is fixed on the carrier frame 352, and when it extends and retracts, it drives the floating block 340 to move up and down.

[0077] The storage container 400 is an open-top container that is fixed to the belt conveyor or the ground by a rigid bracket. It is located on one side of the belt conveyor and directly below the vertical sampling body when the vertical sampling body is not taking samples. It is used to receive the collected samples output from the vertical sampling body.

[0078] The power assembly is used to provide power for the operation of each component of the adjustable raw material sampling device of this application, and the control unit plays the role of controlling the coordinated operation of each component of the adjustable raw material sampling device. Both are existing technologies and will not be described in detail here.

[0079] Preferably, the control unit is a combination of a programmable logic controller and control buttons.

[0080] When using the adjustable raw material sampling equipment of this application:

[0081] First, the moving speed of the shifting arm 200 during sampling and the downward moving speed of the floating block 340 during sampling need to be set according to the type of material to be sampled and the operating speed of the belt conveyor (the two speeds are determined according to the actual site conditions). It is also necessary to set the maximum volume of the combination of the base pipe 310 and the top pipe 320 when sampling different materials (that is, set the single sampling amount of different materials by setting the position of the floating block 340).

[0082] In the initial state, the top surface of the floating block 340 is coplanar with the top surface of the floating block 340. When the belt conveyor is in operation to transport materials, the vertical sampling body is periodically controlled to move laterally to pick up materials. During the lateral movement, the floating block 340 is controlled to move down gradually, thereby gradually changing the volume of the vertical sampling body to ensure that the materials are picked up from the entire cross-section of the falling material flow as evenly as possible. After sampling is completed, the vertical sampling body is controlled to move to the top of the storage container 400, and the floating block 340 is controlled to move down and protrude from the bottom of the top pipe 320, so that the collected materials are poured into the storage container 400 to wait for further processing.

[0083] Preferably, during unloading, the floating block is controlled to move up and down more than 340 times to avoid material blockage.

[0084] Preferably, after unloading is completed, the floating block 340 is controlled to move up and down multiple times to clear the combination of the base pipe 310 and the top pipe 320, thereby achieving self-cleaning and reducing the probability of sample residue contamination in the next sampling.

[0085] Preferably, the storage container 400 is connected to a pipe located at its bottom, so that the obtained sample can directly enter the next processing step.

[0086] Preferably, the storage container 400 is used with a bag inside, using a disposable bag as a container for the sample, which avoids contamination and makes the sample easier to preserve.

[0087] Furthermore, the samples in the storage container 400 are subsequently subjected to crushing and reduction processing.

[0088] Preferred, such as Figures 2 to 4 As shown, in order to further ensure the representativeness of the sample taken, the vertical sampling body also includes a scraping assembly; the scraping assembly includes a scraper 361, a guide block 362 and a drive column 363;

[0089] The scraper 361 is a rectangular rigid plate with an oblique orientation, which is set close to the top surface of the top tube 320. Under the restriction of the guide block 362 and the drive of the drive column 363, it slides in a controlled manner to close and open the top opening of the top tube 320 in a timely manner.

[0090] The guide block 362 is a horizontally placed strip-shaped block with a cross-section of U-shape. There are two guide blocks 362, which are symmetrically arranged and fixed to the side wall of the top pipe 320 near the displacement arm 200. The scraper 361 passes through the guide blocks 362 and slides under the restriction of the guide blocks 362.

[0091] The scraper plate 361 has a long, narrow gear groove on its bottom surface; the drive column 363 is a horizontal column with a built-in motor, positioned on the side wall of the top tube 320 near the shifting arm 200, and the side wall is densely covered with teeth that match the gear groove on the scraper plate 361, rotating under the coordinated control of the power assembly and the control unit; when the drive column 363 rotates, it drives the scraper plate 361 to move, thereby closing and opening the top opening of the top tube 320 in a timely manner; before the vertical sampling body is controlled to reset and move to the top of the storage container 400, the scraper plate 361 is used to close the top opening of the top tube 320, and at the same time, the material exposed in the top tube 320 is removed, ensuring that the sampling amount is similar each time.

[0092] Furthermore, such as Figure 5 As shown, the vertical sampling body also includes a reinforcing frame 330; the reinforcing frame 330 is a metal frame structure, which is fixed to the top pipe 320 and also fixed to the outer wall of the base pipe 310, in order to reinforce the base pipe 310, reduce its deformation and extend its service life.

[0093] Furthermore, such as Figure 6 As shown, the vertical telescopic rod 351 is fitted with a protective sleeve for dust prevention, and the protective sleeve is a corrugated pipe structure.

[0094] In order to prevent the collected samples from leaking out and to avoid the floating block 340 from getting stuck, and to extend the service life of the floating block 340 and the base tube 310, preferably, a ring of bristles is positioned on the side wall of the floating block 340 near the top surface; the presence of the bristles fills the gap between the floating block 340 and the base tube 310 and the top tube 320.

[0095] Preferred, such as Figures 8 to 10 As shown, a side annular groove 341 is provided on the side wall near the top surface of the floating block 340; the side annular groove 341 is an annular groove body; a brush carrier 344 is fitted in the side annular groove 341; the brush carrier 344 is a rubber ring with bristles densely distributed on one side, fitted on the side annular groove 341, with the bristles facing away from the bottom of the side annular groove 341, thereby filling the gap between the floating block 340 and the base pipe 310 and the top pipe 320; the entire brush carrier 344 is replaced when the bristles are severely worn.

[0096] To further reduce the risk of sample contamination and improve the self-cleaning effect of the adjustable raw material sampling device of this application, preferably, such as Figure 11As shown, the bottom of the base pipe 310 is provided with an air cleaning rod 370 near the displacement arm 200; the air cleaning rod 370 is a horizontally placed hollow rod with a strip-shaped opening on one side, and the internal space is connected to the air pump; after unloading, the floating block 340 is controlled to detach from the bottom of the base pipe 310, and at the same time, the air cleaning rod 370 is controlled to blow air toward the top surface of the floating block 340 to clean it.

[0097] To further reduce the risk of sample contamination and improve the self-cleaning effect of the adjustable raw material sampling device of this application, preferably, such as Figure 12 and Figure 13 As shown, the floating block 340 is hollow inside, with an inner cavity 347. An internal pump 343 connected to the outside is located in the inner cavity 347. The bottom of the side annular groove 341 has at least one row of air jet holes 342, which are connected to the internal pump 343 and are controlled to spray air. The brush carrier 344 has multiple ventilation holes 345. The ventilation holes 345 are through holes and correspond one-to-one with the air jet holes 342. After unloading, the floating block 340 is controlled to move up and down to blow and clean the inner walls of the base pipe 310 and the top pipe 320, while cleaning the material adhering to the brush bristles, thereby reducing the probability of the sampled material being mixed with the sampled material in the next sampling.

[0098] Preferred, such as Figure 14 As shown, in order to reduce cleaning dead corners, the inner wall corners of the base pipe 310 and the top pipe 320 are rounded.

[0099] Preferably, during the cleaning process by controlling the jet nozzle 342 to spray air, the scraper 361 is frequently moved to change the gas flow direction and pressure in the combination of the base pipe 310 and the top pipe 320, thereby frequently changing the flow direction of the airflow from the jet nozzle 342 to a certain extent.

[0100] Preferably, a heating component 346 is positioned on the built-in pump 343; the heating component 346 is used to heat the gas transported by the built-in pump 343, which is the prior art; during jet cleaning, hot air can be used for cleaning, further reducing the probability of material clumping and residue in the gaps of the vertical sampling body.

[0101] The technical solutions described in the embodiments of this application have at least the following technical effects or advantages:

[0102] This invention solves the technical problems of existing raw material sampling equipment, which are limited by their own structure, resulting in easy clogging, easy material residue in the container causing sample contamination, fixed container volume making it difficult to adapt to different materials, and difficulty in obtaining the full cross-section of the material flow during sampling, leading to a lack of sample representativeness. The invention achieves the technical effects of adjustable raw material sampling equipment that is less prone to clogging, less prone to material residue, less prone to sample contamination, has strong applicability, and produces highly representative samples.

[0103] Example 2

[0104] To reduce maintenance frequency and achieve automatic replacement and cleaning of the damaged brush carrier 344, this application embodiment optimizes and improves the structure of the brush carrier 344 based on the above embodiment, adding a roller assembly 349 and a connecting channel 348 that connects the side annular groove 341 to the inner cavity 347; specifically:

[0105] like Figures 15 to 17 As shown, the brush carrier 344 is a rubber strip with bristles on one side, and the bristle-free side is in close contact with the bottom of the side annular groove 341.

[0106] The connecting channel 348 is located at the bottom of the side annular groove 341, connecting the side annular groove 341 with the inner cavity 347;

[0107] The roller assembly 349 consists of two controlled rotating rollers positioned within the inner cavity 347, serving to wind up and release the brush carrier 344.

[0108] The brush carrier 344 is fitted onto the side annular groove 341 and passes through the connecting channel 348; the brush carriers 344 in the connecting channel 348 abut against each other; the two ends of the brush carrier 344 are respectively wound and positioned on two rollers; when the two rollers rotate, they can drive the brush carrier 344 to move laterally and extend and retract as a whole.

[0109] After the brush carrier 344 wears out, the exposed brush carrier 344 can be directly replaced by controlling the operation of the drum assembly 349.

[0110] When cleaning the vertical sampling body, the inner walls of the base pipe 310 and the top pipe 320 can be brushed by moving the carrier brush 344.

[0111] When the brush carrier 344 moves, the jet nozzle 342 and the vent 345 can be staggered to form irregularly shaped gas channels; during use, different cleaning effects can be achieved by controlling the relative positions of the jet nozzle 342 and the vent 345.

[0112] When the brush carrier 344 completely covers the air jet hole 342, the ejected airflow will be directed to the top and bottom of the brush carrier 344 to clean the annular groove 341 on the opposite side, thereby reducing the wear of the brush carrier 344 during use and extending its service life.

[0113] Preferably, the brush carrier 344 is made of elastic rubber; when the two rollers rotate, the brush carrier 344 can be tightened and loosened, thereby changing the direction of air output, and can also clean off the material adhering to the brush carrier 344 itself (including the bristles).

[0114] Preferred, such as Figures 18 to 20 As shown, the brush carrier 344 is composed of multiple elastic rubber flat tubes carrying bristles, which are then spliced ​​together in parallel to each other to form a strip. Multiple rows of air jet holes 342 are provided, the number of rows being the same as the number of elastic rubber flat tubes constituting the brush carrier 344. Ventilation holes 345 are provided on both the bottom surface of the annular groove 341 near the side and the bottom surface of the annular groove 341 away from the side of the brush carrier 344. The ventilation holes 345 on the bottom surface of the annular groove 341 away from the side are smaller than half the size of those on the bottom surface of the annular groove 341 near the side. During the cleaning process, by injecting air into the brush carrier 344, the difference in air inlet and outlet rates allows the brush carrier 344 to expand and contract as needed to shake off its own adhering materials, while simultaneously extending its service life, as well as that of the base pipe 310 and the top pipe 320.

[0115] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. For those skilled in the art, the present invention can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An adjustable raw material sampling device, characterized in that: It includes a horizontal guide rail (100), a shifting carrier arm (200), and a vertical sampling body; The horizontal guide rail (100) is fixed on the frame of the belt conveyor; The shifting carrier arm (200) is a horizontal rigid frame body, slidably positioned on the horizontal guide rail (100) and controlled to slide; The vertical sampling body is fixed on the shifting carrier arm (200) and is located on one side of the belt conveyor when no sampling is required; The vertical sampling body includes a base pipe (310), a top pipe (320), a floating block (340), and a block shifting component for driving the floating block (340) to move up and down; The base pipe (310) is a vertically arranged rigid square pipe; The top pipe (320) is a rigid square pipe, fixed on the top of the base pipe (310), the inner wall is coplanar with the inner wall of the base pipe (310), the top surface is an inclined surface, and the top opening faces the top end of the belt; The floating block (340) is a rigid block body, its cross-section is rectangular, the longitudinal section is trapezoidal, and the top surface is an inclined surface; the floating block (340) slides in the space enclosed by the base pipe (310) and the top pipe (320) under the drive of the block shifting component, and the side wall is close to the inner side walls of the base pipe (310) and the top pipe (320).

2. The adjustable raw material sampling device as described in claim 1, characterized in that: It also includes a storage container (400); The storage container (400) is a container with an open top, fixed on the belt conveyor or on the ground through a rigid support, located on one side of the belt conveyor and directly below the vertical sampling body when the vertical sampling body does not perform sampling, and is used to receive the collected samples output from the vertical sampling body.

3. The adjustable raw material sampling device as described in claim 1, characterized in that: The vertical sampling body also includes a scraping component; The scraping component includes a scraping plate (361), a guiding block (362), and a driving column (363); The scraping plate (361) is an obliquely arranged rectangular rigid plate body, closely arranged on the top surface of the top pipe (320), and is controlled to slide under the restriction of the guiding block (362) and the drive of the driving column (363) to timely close and open the top opening of the top pipe (320); The guiding block (362) is a horizontally arranged strip-shaped block body with a U-shaped longitudinal section, the number is two, the two guiding blocks (362) are symmetrically arranged, and are both fixed on the side wall of the top pipe (320) close to the shifting carrier arm (200); The driving column (363) is a horizontally arranged column body, with a built-in motor, positioned on the side wall of the top pipe (320) close to the shifting carrier arm (200), and teeth matching the gear groove at the bottom of the scraping plate (361) are provided on the side wall, and is controlled to rotate.

4. The adjustable raw material sampling device as described in claim 1, characterized in that: A circle of bristles is positioned on the side wall of the floating block (340) close to the top surface; the presence of the bristles fills the gap between the floating block (340) and the base pipe (310) and the top pipe (320).

5. The adjustable raw material sampling device as described in claim 1 or 3, characterized in that: A side annular groove (341) is provided on the side wall of the floating block (340) close to the top surface; The side annular groove (341) is an annular groove body; a brush carrier (344) is sleeved in the side annular groove (341); the brush carrier (344) is a rubber ring with bristles densely distributed on one side, which is sleeved on the side annular groove (341) with the bristles facing away from the bottom of the side annular groove (341) to fill the gap between the floating block (340) and the base pipe (310) and the top pipe (320).

6. The adjustable raw material sampling device as described in claim 5, characterized in that: The bottom of the base pipe (310) is provided with an air cleaning rod (370) on the side near the displacement arm (200); the air cleaning rod (370) is a horizontally placed hollow rod with a strip-shaped opening on one side, and the internal space is connected to the air pump; after unloading, the floating block (340) is controlled to detach from the bottom of the base pipe (310), and at the same time, the air cleaning rod (370) is controlled to blow air toward the top surface of the floating block (340) to clean it.

7. The adjustable raw material sampling device as described in claim 6, characterized in that: The floating block (340) has an inner cavity (347) inside; the inner cavity (347) is equipped with a built-in pump (343); The bottom of the side annular groove (341) is provided with at least one row of jet holes (342), which are connected to the built-in pump (343) and are used to spray air in a controlled manner. The brush carrier (344) is provided with multiple ventilation holes (345); the ventilation holes (345) are through holes and correspond one-to-one with the air jet holes (342); after unloading, the floating block (340) is controlled to move up and down to blow and clean the inner walls of the base pipe (310) and the top pipe (320) while cleaning the material adhering to the brush bristles.

8. The adjustable raw material sampling device as described in claim 7, characterized in that: It also includes a reel assembly (349) and a connecting channel (348); The brush carrier (344) is a rubber strip with bristles on one side, and the bristle-free side is in close contact with the bottom of the side annular groove (341). The connecting channel (348) is located at the bottom of the side annular groove (341), connecting the side annular groove (341) with the inner cavity (347); The drum assembly (349) consists of two controlled rotating drums positioned within the inner cavity (347); The brush carrier (344) is fitted onto the side annular groove (341) and passes through the connecting channel (348); the two ends of the brush carrier (344) are respectively wound and positioned on two rollers; when the two rollers rotate, they drive the brush carrier (344) to move laterally and extend and retract as a whole.

9. The adjustable raw material sampling device as described in claim 8, characterized in that: When the brush carrier (344) moves, the jet holes (342) and vent holes (345) intersect to form irregularly shaped gas channels; in use, different cleaning effects can be achieved by controlling the relative positions of the jet holes (342) and vent holes (345).

10. The adjustable raw material sampling device as described in claim 8, characterized in that: The brush carrier (344) is composed of multiple elastic rubber flat tubes carrying bristles spliced ​​together, and the multiple elastic rubber flat tubes are parallel to each other and spliced ​​together to form a strip. The jet nozzles (342) are arranged in multiple rows, and the number of rows is the same as the number of elastic rubber flat tubes that make up the brush carrier (344); Ventilation holes (345) are provided on both the bottom surface of the annular groove (341) near the side and the bottom surface of the annular groove (341) away from the side of the brush carrier (344). The ventilation hole (345) away from the bottom of the annular groove (341) is smaller than half the ventilation hole (345) near the bottom of the annular groove (341). During the cleaning process, by injecting air into the carrier brush (344), the difference in air inlet and outlet rates of the carrier brush (344) can be used to cause the carrier brush (344) to expand and contract as needed to shake off the material adhering to itself.

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