Coal sample drying device, drying method and coal sample detection system

Abstract

The application discloses a coal sample drying device, a drying method and a coal sample detection system, and relates to the technical field of coal detection. The coal sample drying device comprises a base, first and second heating plates arranged on the base, a material moving assembly and an adsorption assembly. The base is provided with a material moving channel and a discharge port in communication. The material moving assembly is matched in the material moving channel and limits a containing cavity with the material moving channel. The material moving assembly is movable along the material moving channel and has a first position for drying A coal sample on the first heating plate, a second position for drying B coal sample on the second heating plate and a third position for discharging A or B coal sample from the discharge port. The adsorption assembly is connected with the material moving assembly to adsorb the residual A or B coal sample in the material moving channel during the movement of the material moving assembly. The coal sample drying device can ensure the drying quality of the coal sample and guarantee the accuracy of the coal ash measurement data.

Description

Technical Field

[0001] This invention relates to the field of coal testing technology, specifically to a coal sample drying device, a drying method, and a coal sample testing system. Background Technology

[0002] Ash content is an important parameter of coal. It is not only one of the pricing indicators for coal, but also affects its use, transportation and storage. In coal mining enterprises, ash content is one of the most important indicators to guide the production process, and ash content data needs to be measured for every batch of coal.

[0003] The general method for measuring coal ash content is as follows: coal is sampled and dried to obtain a coal sample, which is then heated and burned until its mass no longer changes. The ratio of the mass of the residue to that of the coal sample is taken as the coal ash content. In coal ash content measurement, the effectiveness of the drying process directly affects the ash content measurement data.

[0004] In the process of drying coal samples, a tabletop-type blast drying oven is generally used to pre-dry the reduced coal samples. However, since the coal sample preparation standard requires that the sample drying temperature not exceed 40℃, using a tabletop-type blast drying oven results in uneven heating of the coal sample, high energy consumption, and low drying efficiency, which affects the quality of the dried coal sample. Furthermore, when drying multiple batches of coal samples, cross-contamination occurs between the batches, which seriously affects the drying quality of the coal sample and consequently affects the accurate measurement of coal ash content. Summary of the Invention

[0005] The present invention aims to at least partially solve one of the technical problems in the related art.

[0006] Therefore, this invention provides a coal sample drying device that can ensure the drying quality of coal samples to guarantee the accuracy of coal ash content measurement data.

[0007] This invention also proposes a method for drying coal samples.

[0008] This invention also proposes a coal sample testing system.

[0009] The coal sample drying apparatus of this invention includes:

[0010] The base is provided with a material transfer channel and a material outlet, and the material outlet is connected to the material transfer channel;

[0011] A first heating plate and a second heating plate are disposed on the base and arranged at intervals in the extending direction of the material transfer channel;

[0012] A transfer assembly, at least a portion of which is fitted within the transfer channel and defines a receiving cavity from the transfer channel, the transfer assembly being movable along the transfer channel and having a first position, a second position, and a third position;

[0013] In the first position, the transfer assembly is positioned above the first heating plate so that the first heating plate can dry the A coal sample in the accommodating cavity; in the second position, the transfer assembly is positioned above the second heating plate so that the second heating plate can dry the B coal sample in the accommodating cavity; in the third position, the transfer assembly is positioned above the discharge port so that the A coal sample or the B coal sample in the accommodating cavity can be discharged through the discharge port;

[0014] An adsorption component, at least partially connected to the transfer component, wherein the adsorption component is used to adsorb residual coal sample A or coal sample B in the transfer channel during the movement of the transfer component.

[0015] The coal sample drying device of this invention can ensure the drying quality of coal samples to guarantee the accuracy of coal ash content measurement data.

[0016] In some embodiments, the base includes a first support plate, a second support plate, and a third support plate connected in sequence. The first support plate, the second support plate, and the third support plate are in a stepped shape with a higher center and lower sides. The first heating plate and the second heating plate are respectively disposed on the first support plate and the third support plate. The discharge port is disposed on the second support plate. The top surfaces of the first heating plate and the second heating plate are flush with the top surface of the second support plate.

[0017] In some embodiments, the base includes two baffles, which are arranged parallel to each other on the second support plate and extend horizontally towards the first support plate and the third support plate at both ends, respectively. The baffles, together with the second support plate, the first heating plate and the second heating plate, form the material transfer channel.

[0018] In some embodiments, the material transfer assembly includes a carriage and a scraper. The carriage is positioned adjustablely on the base along the extension direction of the material transfer channel. Two scrapers are provided, which are disposed on the carriage and perpendicular to the baffle. The bottom surface of the scraper is in close contact with the first heating plate to form the receiving cavity together with the material transfer channel.

[0019] In some embodiments, the base has guide rods extending along the material transfer channel on both sides, and the slide has sliders at both ends corresponding to the guide rods. The sliders are slidably sleeved on the guide rods. The coal sample drying device includes a driving assembly for driving the sliders to move along the guide rods to move the slide.

[0020] In some embodiments, the drive assembly includes a drive motor, a drive rod, and a drive block. The drive motor is fixedly mounted on one side of the base. The drive rod is coaxially connected to the output shaft of the drive motor. The drive block is threadedly connected to the drive rod and fixedly connected to the slider. The drive motor is used to drive the slide to reciprocate through the drive block.

[0021] In some embodiments, the adsorption assembly includes a feeder, a manifold, a blower, a filter, and a collection tank. Two feeders are provided, located on both sides of the transfer assembly and within the transfer channel. Each feeder has a suction port at its end facing the base. The manifold connects the two feeders and is connected to the blower via an air inlet pipe. The blower is used to create a negative pressure environment at the suction port. The filter is connected to the blower via an exhaust pipe. The collection tank is connected to the filter to collect residual A coal sample or B coal sample within the transfer channel.

[0022] In some embodiments, the base bottom is provided with a vibration source corresponding to both the first heating plate and the second heating plate. The vibration source is used to generate vibration when the material transfer assembly is in the first position or the second position to flatten the A coal sample or B coal sample in the accommodating cavity.

[0023] The coal sample drying method of this invention includes the coal sample drying apparatus of any of the above embodiments, and the drying method includes the following steps:

[0024] S1. Move the material transfer component to the first position, place coal sample A into the receiving cavity and flatten the coal sample A in the receiving cavity, and turn on the first heating plate to dry the coal sample A;

[0025] S2. After coal sample A is dried, move the transfer component to the third position. During the movement, the transfer component pushes coal sample A to the discharge port, so that the dried coal sample A is discharged through the discharge port.

[0026] S3. Turn on the adsorption component and move the transfer component to the second position. The adsorption component adsorbs the coal sample remaining in the transfer channel.

[0027] S4. Place coal sample B into the receiving cavity and spread it out in the receiving cavity. Turn on the second heating plate to dry coal sample B.

[0028] S5. After the B coal sample is dried, move the transfer component to the third position. During the movement, the transfer component pushes the B coal sample to the discharge port, so that the dried B coal sample is discharged through the discharge port.

[0029] S6. Turn on the adsorption component and move the transfer component to the first position. The adsorption component adsorbs the residual coal sample A in the transfer channel.

[0030] S7. Repeat steps S1-S6 to achieve alternating drying operations for multiple batches of coal samples at the first and second positions.

[0031] The coal sample testing system of this invention includes the coal sample drying device of any of the above embodiments. Attached Figure Description

[0032] Figure 1 This is a top view of the coal sample drying apparatus according to an embodiment of the present invention.

[0033] Figure 2 This is a left view of the coal sample drying apparatus according to an embodiment of the present invention.

[0034] Figure 3 This is a schematic diagram of the base structure in the coal sample drying device according to an embodiment of the present invention.

[0035] Figure 4 This is a schematic diagram of the material transfer component in the coal sample drying device according to an embodiment of the present invention.

[0036] Figure 5 This is a schematic diagram of the material transfer component located in the first position in the coal sample drying device according to an embodiment of the present invention.

[0037] Figure 6 This is a schematic diagram of the material transfer component located in the third position in the coal sample drying device of this embodiment of the invention.

[0038] Figure label:

[0039] Base 1; Material transfer channel 11; Discharge port 12; First support plate 13; Second support plate 14; Third support plate 15; Baffle 16; Guide rod 17;

[0040] First heating plate 2;

[0041] Second heating plate 3;

[0042] Material transfer assembly 4; carriage 41; scraper 42; slider 43

[0043] Adsorption assembly 5; feeder 51; manifold 52; blower 53; filter 54; collection tank 55;

[0044] 6-cell cavity;

[0045] A chute 7;

[0046] B-tube 8;

[0047] Drive assembly 9; drive motor 91; drive rod 92; drive block 93;

[0048] Vibration source 10. Detailed Implementation

[0049] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0050] like Figures 1 to 6 As shown, the coal sample drying device of this embodiment includes a base 1, a first heating plate 2, a second heating plate 3, a material transfer assembly 4, and an adsorption assembly 5. The base 1 is provided with a material transfer channel 11 and a discharge port 12, the discharge port 12 being connected to the material transfer channel 11. The first heating plate 2 and the second heating plate 3 are disposed on the base 1 and spaced apart in the extending direction of the material transfer channel 11. At least a portion of the material transfer assembly 4 is fitted within the material transfer channel 11 and constrains the receiving cavity 6 within the material transfer channel 11. The material transfer assembly 4 is movable along the material transfer channel 11 and has a first position, a second position, and a third position. In the first position, the transfer assembly 4 is positioned above the first heating plate 2 so that the first heating plate 2 can dry the A coal sample in the accommodating cavity 6. In the second position, the transfer assembly 4 is positioned above the second heating plate 3 so that the second heating plate 3 can dry the B coal sample in the accommodating cavity 6. In the third position, the transfer assembly 4 is positioned above the discharge port 12 so that the A coal sample or B coal sample in the accommodating cavity 6 can be discharged through the discharge port 12. At least part of the adsorption assembly 5 is connected to the transfer assembly 4. The adsorption assembly 5 is used to adsorb the A coal sample or B coal sample remaining in the transfer channel 11 during the movement of the transfer assembly 4.

[0051] In use, the coal sample drying device of this embodiment of the invention involves moving the transfer assembly 4 to the first position, placing coal sample A into the receiving cavity 6, leveling the coal sample A, and turning on the first heating plate 2 to dry the coal sample A. After the coal sample A is dried, the transfer assembly 4 is moved to the third position. During the movement, the transfer assembly 4 pushes the coal sample A to the discharge port 12, allowing the dried coal sample A to be discharged through the discharge port 12. The adsorption assembly 5 is then turned on, and the transfer assembly 4 is moved to the second position. The adsorption assembly 5 adsorbs the coal sample remaining in the transfer channel 11. Coal sample B is placed in the receiving cavity 6 and spread out. The second heating plate 3 is turned on to dry the coal sample B. After the coal sample B is dried, the transfer component 4 is moved to the third position. During the movement, the transfer component 4 pushes the coal sample B to the discharge port 12, so that the dried coal sample B is discharged through the discharge port 12. The adsorption component 5 is turned on, and the transfer component 4 is moved to the first position. The adsorption component 5 adsorbs the coal sample A remaining in the transfer channel 11. The above operation is repeated to achieve the alternating drying operation of multiple batches of coal samples in the first and second positions.

[0052] The coal sample drying device of this invention, by setting a first heating plate 2 and a second heating plate 3, allows multiple batches of coal samples to be dried alternately on the first heating plate 2 and the second heating plate 3, achieving a rapid drying effect. At the same time, the dried coal samples can be discharged sequentially to achieve the purpose of feeding, which facilitates subsequent coal sample testing operations. During the process of the transfer component 4 moving from the third position to the second position and from the third position to the first position, the adsorption component 5 can adsorb the residual A coal sample or B coal sample in the transfer channel 11 to avoid cross-contamination of multiple coal samples, so as to ensure the drying quality of each batch of coal samples and ensure the accuracy of coal ash content measurement data.

[0053] Optionally, a funnel-shaped receiving pipe is connected below the discharge port 12.

[0054] Optionally, an A-chute 7 is provided above the first heating plate 2 at the first position, and the A-chute 7 is used to transport coal samples at the first heating plate 2 position.

[0055] Optionally, a B-chute 8 is provided above the second heating plate 3 at the second position, and the B-chute 8 is used to transport coal samples at the position of the second heating plate 3.

[0056] In some embodiments, such as Figure 1 , Figure 2 and Figure 3 As shown, the material transfer channel 11 extends in a straight line.

[0057] The material transfer channel 11 extends in a straight line, and the first heating plate 2 and the second heating plate 3 are arranged on both sides of the discharge port 12 to realize the continuous movement of the material transfer assembly 4.

[0058] In some embodiments, the transfer channel 11 extends along an arc.

[0059] The material transfer channel 11 extends along an arc, and the first heating plate 2 and the second heating plate 3 are arranged on both sides of the discharge port 12. With a fixed length of the material transfer channel 11, the overall size of the material transfer channel 11 is reduced.

[0060] In some embodiments, such as Figure 1 , Figure 2 and Figure 3 As shown, the base 1 includes a first support plate 13, a second support plate 14, and a third support plate 15 connected in sequence. The first support plate 13, the second support plate 14, and the third support plate 15 are in a stepped shape with a high center and low sides. The first heating plate 2 and the second heating plate 3 are respectively disposed on the first support plate 13 and the third support plate 15. The discharge port 12 is disposed on the second support plate 14. The top surfaces of the first heating plate 2 and the second heating plate 3 are flush with the top surface of the second support plate 14.

[0061] The first heating plate 2 and the second heating plate 3 are respectively disposed on the first support plate 13 and the third support plate 15, and the discharge port 12 is disposed on the second support plate 14. The top surfaces of the first heating plate 2 and the second heating plate 3 are flush with the top surface of the second support plate 14. When the material transfer assembly 4 moves the A coal sample on the first heating plate 2 or the B coal sample on the second heating plate 3, the receiving cavity 6 restricted by the material transfer assembly 4 and the material transfer channel 11 can ensure that the coal sample is moved to the discharge port 12, reduce the residue of the coal sample in the material transfer channel 11, and thus reduce the occurrence of cross-contamination of coal samples between multiple batches.

[0062] In some embodiments, such as Figure 1 , Figure 2 and Figure 3 As shown, the base 1 includes two baffles 16, which are arranged parallel to the second support plate 14 and extend horizontally towards the first support plate 13 and the third support plate 15 at both ends, respectively. The baffles 16, the second support plate 14, the first heating plate 2 and the second heating plate 3 together form a material transfer channel 11.

[0063] By setting baffles 16 on the base 1, the two baffles 16, the second support plate 14, the first heating plate 2, and the second heating plate 3 together form a material transfer channel 11. The structure is simple and facilitates the setting and processing of the material transfer channel 11.

[0064] In some embodiments, such as Figure 1 , Figure 2 and Figure 4 As shown, the material transfer assembly 4 includes a slide 41 and a scraper 42. The slide 41 is positioned adjustablely on the base 1 along the extension direction of the material transfer channel 11. There are two scrapers 42, which are mounted on the slide 41 and perpendicular to the baffle 16. The bottom surface of the scraper 42 is in close contact with the first heating plate 2 to form a receiving cavity 6 together with the material transfer channel 11.

[0065] By setting the slide 41, it is easy to move the transfer component 4. The bottom surface of the scraper 42 is in close contact with the first heating plate 2, which ensures the storage effect of the accommodating cavity 6 on the coal sample side and ensures that the transfer component 4 pushes the coal sample during the movement, avoiding the residual coal sample in the transfer channel 11, so as to prevent cross-contamination between multiple batches of coal samples.

[0066] In some embodiments, such as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the base 1 has guide rods 17 extending along the material transfer channel 11 on both sides. The slide 41 has sliders 43 at both ends corresponding to the guide rods 17. The sliders 43 are slidably sleeved on the guide rods 17. The coal sample drying device includes a drive assembly 9. The drive assembly 9 is used to drive the sliders 43 to move along the guide rods 17 to drive the slide 41 to move.

[0067] The guide rod 17 is set to restrict the movement direction of the slide 41 by the slider 43 on the slide 41, and to restrict the slide 41 in the vertical direction, so that the bottom surface of the scraper 42 remains in close contact with the first heating plate 2 or the second heating plate 3 or the second support plate 14 during the movement, ensuring that there is no coal sample residue or very little coal sample residue in the transfer channel 11 after the coal sample is transferred.

[0068] In some embodiments, such as Figure 1 and Figure 2 As shown, the drive assembly 9 includes a drive motor 91, a drive rod 92, and a drive block 93. The drive motor 91 is fixedly mounted on one side of the base 1. The drive rod 92 is coaxially connected to the output shaft of the drive motor 91. The drive block 93 is threadedly connected to the drive rod 92 and fixedly connected to the slider 43. The drive motor 91 is used to drive the slide 41 to reciprocate through the drive block 93.

[0069] The drive motor 91 drives the drive rod 92 to rotate. Under the constraint of the slide 41, the drive block 93 moves axially along the drive rod 92 to drive the entire slide 41 to move. By controlling the rotation direction of the drive motor 91, the slide 41 can be made to reciprocate along the material transfer channel 11. The structure is simple and easy to operate.

[0070] In some embodiments, such as Figure 1 , Figure 2 and Figure 4 As shown, the adsorption assembly 5 includes a feeder 51, a manifold 52, a blower 53, a filter 54, and a collection tank 55. There are two feeders 51, which are located on both sides of the transfer assembly 4 and in the transfer channel 11. The feeder 51 has a suction port at one end facing the base 1. The manifold 52 connects the two feeders 51 and is connected to the blower 53 through an air inlet pipe. The blower 53 is used to create a negative pressure environment at the suction port. The filter 54 is connected to the blower 53 through an exhaust pipe. The collection tank 55 is connected to the filter 54 to collect the residual A coal sample or B coal sample in the transfer channel 11.

[0071] The blower 53 operates by creating negative pressure in the inner cavity of the suction device 51 through the air inlet pipe and the manifold 52. It collects the residual A or B coal sample in the transfer channel 11 through the suction port to ensure the cleanliness of the transfer channel 11 and avoid cross-contamination between multiple batches of coal samples. The blower 53 delivers the air containing the coal sample residue to the filter 54 through the exhaust pipe, and collects the residual coal sample through the collection tank 55 to ensure the cleanliness of the exhaust air and reduce air pollution. There are two suction devices 51. During a single movement of the transfer component 4, the transfer channel 11 can be adsorbed twice to ensure the cleanliness of the transfer channel 11.

[0072] In some embodiments, such as Figure 2As shown, the base 1 is provided with vibration sources 10 at the bottom corresponding to the first heating plate 2 and the second heating plate 3. The vibration sources 10 are used to generate vibration when the material transfer assembly 4 is in the first position or the second position to flatten the A coal sample or B coal sample in the accommodating cavity 6.

[0073] Vibration is generated by vibration source 10. The A coal sample or B coal sample in the accommodating cavity 6 is spread evenly under the action of vibration. When the first heating plate 2 or the second heating plate 3 is heated, the heating uniformity of the A coal sample or B coal sample can be guaranteed, and the drying efficiency of the coal sample can be accelerated.

[0074] Optionally, the vibration source 10 is a vibration motor.

[0075] The following describes a coal sample drying method according to an embodiment of the present invention.

[0076] The coal sample drying method of this invention includes the coal sample drying apparatus of any of the above embodiments, and the drying method includes the following steps:

[0077] S1. Move the material transfer component 4 to the first position, place the coal sample A into the accommodating cavity 6 and flatten the coal sample A in the accommodating cavity 6, and turn on the first heating plate 2 to dry the coal sample A.

[0078] S2. After the A coal sample is dried, move the transfer component 4 to the third position. During the movement, the transfer component 4 pushes the A coal sample to the discharge port 12, so that the dried A coal sample is discharged through the discharge port 12.

[0079] S3. Turn on the adsorption component 5 and move the transfer component 4 to the second position. The adsorption component 5 adsorbs the coal sample remaining in the transfer channel 11.

[0080] S4. Place coal sample B into cavity 6 and spread it out in cavity 6. Turn on the second heating plate 3 to dry coal sample B.

[0081] S5. After the B coal sample is dried, move the transfer component 4 to the third position. During the movement, the transfer component 4 pushes the B coal sample to the discharge port 12, so that the dried B coal sample is discharged through the discharge port 12.

[0082] S6. Turn on the adsorption component 5 and move the transfer component 4 to the first position. The adsorption component 5 adsorbs the residual coal sample A in the transfer channel 11.

[0083] S7. Repeat steps S1-S6 to achieve alternating drying operations for multiple batches of coal samples at the first and second positions.

[0084] In some embodiments, during S2, while moving the material transfer component 4 to the third position, the adsorption component 5 is activated, and the adsorption component 5 adsorbs the coal sample remaining in the material transfer channel 11.

[0085] During the process of the transfer component 4 moving from the first position to the third position, the adsorption component 5 is activated, so that the transfer component 4 can adsorb the coal sample remaining in the entire transfer channel 11 during the process of moving from the first position to the second position, thus ensuring the adsorption effect of the residual coal sample.

[0086] In some embodiments, during the process of moving the material transfer component 4 to the third position in S5, the adsorption component 5 is activated, and the adsorption component 5 adsorbs the residual A coal sample in the material transfer channel 11.

[0087] During the process of the transfer component 4 moving from the second position to the third position, the adsorption component 5 is activated, so that the transfer component 4 can adsorb the coal sample remaining in the entire transfer channel 11 during the process of moving from the second position to the first position, thus ensuring the adsorption effect on the residual coal sample A.

[0088] The coal sample drying method of this invention is easy to operate. The first heating plate 2 and the second heating plate 3 ensure the drying of the coal sample, and the suction component adsorbs the residual coal sample in the transfer channel 11 to avoid cross-contamination between multiple batches of coal samples, thus ensuring the drying quality of the coal sample and the accuracy of the data when measuring the ash content of the coal sample.

[0089] The coal sample testing system according to an embodiment of the present invention is described below.

[0090] The coal sample testing system of this invention includes the coal sample drying device of any of the above embodiments.

[0091] The coal sample testing system of this invention can ensure the drying quality of coal samples to guarantee the accuracy of coal ash content measurement data.

[0092] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0093] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0094] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0095] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0096] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0097] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A coal sample drying apparatus, characterized by, include: The base is provided with a material transfer channel and a material outlet, the material outlet being connected to the material transfer channel, and the base includes two baffles and a first support plate, a second support plate and a third support plate connected in sequence. A first heating plate and a second heating plate are disposed on the base and spaced apart in the extending direction of the material transfer channel. The first heating plate and the second heating plate are respectively disposed on the first support plate and the third support plate, and the discharge port is disposed on the second support plate. A material transfer assembly, at least a portion of which is fitted within the material transfer channel and defines a receiving cavity therefrom, is movable along the material transfer channel and has a first position, a second position, and a third position. The material transfer assembly includes a carriage and scrapers. The carriage is positionally adjustable on the base along the extension direction of the material transfer channel. Two scrapers are provided, which are mounted on the carriage and perpendicular to the baffle. The bottom surface of the scrapers is in close contact with the first heating plate to form the receiving cavity together with the material transfer channel. In the first position, the transfer assembly is positioned above the first heating plate so that the first heating plate can dry the A coal sample in the accommodating cavity; in the second position, the transfer assembly is positioned above the second heating plate so that the second heating plate can dry the B coal sample in the accommodating cavity; in the third position, the transfer assembly is positioned above the discharge port so that the A coal sample or the B coal sample in the accommodating cavity can be discharged through the discharge port; An adsorption component, at least partially connected to the transfer component, wherein the adsorption component is used to adsorb residual coal sample A or coal sample B in the transfer channel during the movement of the transfer component.

2. The coal sample drying apparatus according to claim 1, characterized by The first support plate, the second support plate, and the third support plate are in a stepped shape with a higher middle and lower sides. The top surfaces of the first heating plate and the second heating plate are flush with the top surface of the second support plate.

3. The coal sample drying apparatus according to claim 2, characterized by The two baffles are arranged parallel to each other on the second support plate and extend horizontally towards the first support plate and the third support plate at both ends, respectively. The baffles, the second support plate, the first heating plate and the second heating plate together form the material transfer channel.

4. The coal sample drying apparatus according to claim 1, characterized by The base has guide rods extending along the material transfer channel on both sides, and sliders are provided at both ends of the slide corresponding to the guide rods. The sliders are slidably sleeved on the guide rods. The coal sample drying device includes a driving assembly, which is used to drive the sliders to move along the guide rods to move the slide.

5. The coal sample drying apparatus according to claim 4, wherein The drive assembly includes a drive motor, a drive rod, and a drive block. The drive motor is fixedly mounted on one side of the base. The drive rod is coaxially connected to the output shaft of the drive motor. The drive block is threadedly connected to the drive rod and fixedly connected to the slider. The drive motor is used to drive the slide to reciprocate through the drive block.

6. The coal sample drying apparatus according to any one of claims 1 to 5, characterized in that, The adsorption assembly includes a feeder, a manifold, a blower, a filter, and a collection tank. There are two feeders, which are located on both sides of the transfer assembly and within the transfer channel. Each feeder has a suction port at its end facing the base. The manifold connects the two feeders and is connected to the blower through an air inlet pipe. The blower is used to create a negative pressure environment at the suction port. The filter is connected to the blower through an exhaust pipe. The collection tank is connected to the filter to collect residual A coal sample or B coal sample in the transfer channel.

7. The coal sample drying apparatus according to any one of claims 1 to 5, characterized in that, The base bottom is provided with a vibration source corresponding to both the first heating plate and the second heating plate. The vibration source is used to generate vibration when the material transfer assembly is in the first position or the second position to flatten the A coal sample or B coal sample in the accommodating cavity.

8. A method of drying a coal sample, characterized by, Includes the coal sample drying apparatus according to any one of claims 1-7; The drying method includes the following steps: S1. Move the material transfer component to the first position, place coal sample A into the receiving cavity and flatten the coal sample A in the receiving cavity, and turn on the first heating plate to dry the coal sample A; S2. After coal sample A is dried, move the transfer component to the third position. During the movement, the transfer component pushes coal sample A to the discharge port, so that the dried coal sample A is discharged through the discharge port. S3. Turn on the adsorption component and move the transfer component to the second position. The adsorption component adsorbs the coal sample remaining in the transfer channel. S4. Place coal sample B into the receiving cavity and spread it out in the receiving cavity. Turn on the second heating plate to dry coal sample B. S5. After the B coal sample is dried, move the transfer component to the third position. During the movement, the transfer component pushes the B coal sample to the discharge port, so that the dried B coal sample is discharged through the discharge port. S6. Turn on the adsorption component and move the transfer component to the first position. The adsorption component adsorbs the residual coal sample A in the transfer channel. S7. Repeat steps S1-S6 to achieve alternating drying operations for multiple batches of coal samples at the first and second positions.

9. A coal sample detection system, characterized by, Includes the coal sample drying apparatus according to any one of claims 1-7.

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