Material shaping and sample pressing device

Abstract

The utility model discloses a material shaping and sample pressing device, and relates to the technical field of material sample pressing. The device comprises a belt type conveying device, a rectifying device and a sample pressing device. One end of the belt type conveying device is provided with a feeding port, the other end of the belt type conveying device is provided with a discharging port, and materials are conveyed to the discharging port from the feeding port. The rectifying device is arranged between the material inlet and the material outlet and is used for rectifying materials; and the sample pressing device is arranged between the rectifying device and the discharge hole and is used for compacting the rectified materials. By integrating the belt type conveying device, the rectifying device and the sample pressing device, automatic continuous sample pressing of materials is achieved, high-quality and high-efficiency sample supply can be provided for follow-up coal quality online detection, and therefore the overall detection efficiency is improved. According to the device, the workload of operators is effectively relieved, the working efficiency is improved, the consistency in the sample preparation process can be ensured, manual operation errors are avoided, and the accuracy and reliability of detection results are further improved.

Description

Technical Field

[0001] This utility model relates to the field of material pressing technology, and in particular to a material shaping and pressing device. Background Technology

[0002] Coal, as a widely used energy source, plays a crucial role, especially in the power industry, where fuel costs typically account for over 70% of power plant operating costs. Key coal quality indicators include ash content, calorific value, volatile matter, moisture, and the content of elements such as C, H, and S. These indicators not only form the basis for coal quality acceptance and settlement but are also key parameters guiding efficient boiler combustion. Traditional coal quality analysis methods primarily rely on offline manual sampling, sample preparation, and laboratory analysis. This method suffers from drawbacks such as cumbersome procedures, long processing times, and poor real-time performance, failing to meet the demands of modern power plants for real-time coal quality monitoring. Therefore, developing efficient and accurate online real-time coal quality monitoring technology has become an urgent need for the industry.

[0003] Currently, online coal quality detection technology has developed to a certain extent, with common methods including rapid gamma-neutron activation analysis, dual-energy gamma-ray diffraction, X-ray absorption spectrometry, infrared spectroscopy, and fluorescence spectroscopy. Among these, infrared spectroscopy has attracted widespread attention due to its rapid and non-destructive characteristics. However, this method requires the sample to be compressed into a pellet to ensure the accuracy and consistency of the detection.

[0004] Existing tableting equipment typically consists of three parts: a lower pressing block, a tablet, and an upper pressing block. The specific operation process is as follows: First, the tablet is placed on the lower pressing block. Then, the sample is poured into the tablet. Finally, the upper pressing block is placed on the tablet and rotated to evenly distribute the sample across the tablet surface. This process requires manual placement of the sample into the tablet, followed by compaction and even distribution by the upper pressing block. This manual operation is not only labor-intensive but also difficult to maintain consistent quality in harsh working environments. More importantly, this manual operation method is difficult to automate, severely hindering the improvement of coal quality testing efficiency. Utility Model Content

[0005] To solve the above-mentioned technical problems, the purpose of this utility model is to provide a material shaping and pressing device, which aims to realize the automated and continuous pressing of materials.

[0006] The technical solution provided by this utility model is as follows:

[0007] A material shaping and pressing device, comprising:

[0008] A belt conveyor has an inlet at one end and an outlet at the other end, used to convey materials from the inlet to the outlet.

[0009] A rectifier is disposed between the inlet and the outlet for rectifying the material.

[0010] A compaction device is installed between the rectifier and the discharge port to compact the rectified material.

[0011] Furthermore, the pressing device includes two pressing rollers arranged sequentially along the material conveying direction, namely a first pressing roller and a second pressing roller;

[0012] The diameter of the first pressure roller is the same as the diameter of the second pressure roller, and the installation height of the first pressure roller is higher than the installation height of the second pressure roller;

[0013] Alternatively, the diameter of the first pressure roller is smaller than the diameter of the second pressure roller, and the installation height of the first pressure roller is the same as the installation height of the second pressure roller.

[0014] Furthermore, the pressing device includes a plurality of pressing rollers arranged sequentially along the material conveying direction;

[0015] The multiple pressure rollers have the same diameter, and their corresponding installation heights decrease sequentially from high to low along the material conveying direction;

[0016] Alternatively, the diameters of the multiple pressure rollers may increase sequentially from small to large along the material conveying direction, with corresponding installation heights being consistent.

[0017] Furthermore, the pressing device also includes a driving device and a transmission device, wherein the shaft of one of the pressing rollers is directly connected to the output end of the driving device, and the other pressing rollers are linked with the directly connected pressing rollers through the transmission device.

[0018] Furthermore, the belt conveyor is a belt conveyor, which includes a conveyor belt and a power unit for driving the conveyor belt;

[0019] The ratio of the linear speed of the conveyor belt to the linear speed of the pressure roller is adjustable.

[0020] Furthermore, the outer surface of the pressure roller is coated with an anti-stick coating, or the outer surface of the pressure roller is provided with a rubber coating layer.

[0021] Furthermore, the material shaping and pressing device also includes a height limiting device, which is disposed between the feed inlet and the rectifier, for limiting the height of the material before it enters the rectifier.

[0022] Furthermore, the height limiting device includes a height limiting plate, and the height limiting plate forms an adjustable gap with the bearing surface of the belt conveyor.

[0023] Furthermore, the material shaping and pressing device also includes a detection device, which is disposed between the pressing device and the discharge port, for detecting the compacted material, and the detected material flows out from the discharge port.

[0024] Furthermore, the rectifier includes a rectifier plate, a rectifier frame, and a motor. The rectifier plate and the bearing surface of the belt conveyor form a material channel. The rectifier frame moves along the side of the rectifier plate under the drive of the motor.

[0025] Compared with the prior art, the material shaping and pressing device provided in this embodiment of the utility model has at least the following technical effects:

[0026] By integrating a belt conveyor, a rectifier, and a sample pressing device, automated and continuous sample pressing of materials is achieved, providing a high-quality and efficient sample supply for subsequent online coal quality testing, thereby improving overall testing efficiency. This device not only effectively reduces the workload of operators and improves work efficiency, but also ensures consistency in the sample preparation process, avoiding human error and thus improving the accuracy and reliability of test results. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the material shaping and pressing device of this utility model;

[0029] Figure 2 This is a schematic diagram of the sample pressing device of this utility model;

[0030] Figure 3 This is a side view of the double pressure roller structure in one embodiment of the present invention.

[0031] Figure 4 This is a side view of the multi-stage pressure roller structure in one embodiment of the present invention.

[0032] Figure 5 This is a side view of the multi-stage pressure roller structure in another embodiment of the present invention.

[0033] Figure label:

[0034] 10. Belt conveyor; 11. Inlet; 12. Outlet; 20. Rectifier; 21. Rectifier plate; 22. Rectifier frame; 23. Motor; 30. Pressing device; 31. Press roller; 311. First press roller; 312. Second press roller; 32. Drive device; 33. Transmission device; 34. Base; 40. Height limiting device. Detailed Implementation

[0035] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0036] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly set on the other component; when a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to the other component.

[0037] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not 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 utility model.

[0038] 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" or "several" means two or more, unless otherwise explicitly specified.

[0039] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this utility model can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0040] Please see the appendix Figure 1 As shown, one embodiment of this utility model provides a material shaping and pressing device. This device is not only suitable for coal sample preparation in online coal quality testing, but can also be widely used in other occasions requiring material pressing and shaping. It can meet the requirements of various industries for material sample uniformity, flatness, and compaction, providing stable and efficient sample preparation. The material shaping and pressing device includes a belt conveyor 10, a rectifier 20, and a pressing device 30. One end of the belt conveyor 10 is provided with an inlet 11, and the other end with an outlet 12. The belt conveyor 10 is used to transport material from the inlet 11 to the outlet 12. The rectifier 20 is located between the inlet 11 and the outlet 12 and is used to rectify the material. The pressing device 30 is located between the rectifier 20 and the outlet 12 and is used to compact the rectified material.

[0041] The material shaping and pressing device in this embodiment integrates a belt conveyor 10, a rectifier 20, and a pressing device 30, achieving automated and continuous material pressing. This provides high-quality and efficient sample supply for subsequent online coal quality testing, thereby improving overall testing efficiency. This device not only effectively reduces the workload of operators and improves work efficiency, but also ensures consistency in the sample preparation process, avoiding human error and thus improving the accuracy and reliability of test results.

[0042] Please see the appendix Figure 2 As shown, in some optional embodiments, the pressing device 30 includes a pressing roller 31, a driving device 32, and a transmission device 33. The shaft of one pressing roller is directly connected to the output end of the driving device 32, and the remaining pressing rollers are linked to this directly connected roller via the transmission device 33. During operation of the pressing device 30, the driving device 32 drives the directly connected pressing roller to rotate, which in turn drives the remaining pressing rollers to rotate synchronously via the transmission device 33. Furthermore, the pressing device 30 also includes two opposing bases 34. The pressing roller 31 is mounted between these two bases 34, the driving device 32 is mounted on the outside of one base, and the transmission device 33 is mounted on the outside of the other base. The transmission device 33 can be a synchronous belt drive, or other types of transmission methods such as gears or chains can be selected.

[0043] In some optional embodiments, the pressing device 30 adopts a double-roller structure, specifically including two rollers 31 arranged sequentially along the material conveying direction, namely a first roller 311 and a second roller 312. It should be further explained that a first gap is formed between the first roller 311 and the bearing surface of the belt conveyor 10, and a second gap is formed between the second roller 312 and the bearing surface of the belt conveyor 10. The rectified material passes through the first gap and the second gap sequentially. Here, the first gap is larger than the second gap, designed to allow materials of greater height to pass through, thereby achieving a pre-compression effect on the material. After being pre-compressed by the first roller 311, the material passes through the second gap and is further pressed by the second roller 312, thereby making the material surface smoother and denser.

[0044] Please see the appendix Figure 3 As shown, in one specific embodiment, the diameter of the first pressure roller 311 is the same as the diameter of the second pressure roller 312, and the installation height of the first pressure roller 311 is higher than the installation height of the second pressure roller 312, thereby achieving a structural design where the first gap is greater than the second gap. In another specific embodiment, the diameter of the first pressure roller is smaller than the diameter of the second pressure roller, and the installation height of the first pressure roller is the same as the installation height of the second pressure roller, similarly achieving a structural design where the first gap is greater than the second gap.

[0045] In some optional embodiments, the pressing device 30 employs a multi-stage pressing roller structure, specifically including multiple pressing rollers 31 arranged sequentially along the material conveying direction. It should be further noted that these pressing rollers 31 form multiple gaps with the bearing surface of the belt conveyor 10, and these gaps are arranged in a certain drop sequence. Specifically, the multiple gaps decrease sequentially along the material conveying direction, forming a stepped structure, thereby gradually compressing and compacting the rectified material. Through this multi-stage pressing design, the density of the material can be gradually increased under the action of multiple pressing rollers 31, making its surface smoother.

[0046] Please see the appendix Figure 4 As shown, in a specific embodiment, multiple pressure rollers 31 have the same diameter, and their corresponding installation heights decrease sequentially from high to low along the material conveying direction, thereby achieving a structural design where multiple gaps decrease sequentially along the material conveying direction. Specifically, the installation height difference between adjacent pressure rollers 31 can be the same or different, but regardless of the height difference, the gap between the pressure roller 31 and the bearing surface of the belt conveyor 10 should be progressively reduced in order to compact the rectified material. Through this design, the material will gradually be subjected to greater pressure as it passes through each stage of pressure rollers 31, resulting in a smoother and denser surface. This progressively compacting structure is not only suitable for multi-stage pressure roller structures but can also be used in double-pressure roller structures.

[0047] Please see the appendix Figure 5As shown, in another specific embodiment, the diameters of the multiple pressure rollers 31 increase sequentially from small to large along the material conveying direction, with corresponding consistent installation heights. This also achieves the effect of gradually decreasing gaps along the material conveying direction. Specifically, the diameters of the multiple pressure rollers 31 can vary according to certain values, such as Ø50, Ø60, Ø70, and Ø80, or can be randomly varied according to actual needs. However, regardless of the diameter of the pressure rollers 31, their arrangement should be in ascending order to form a progressive height difference, so as to achieve gradual compaction of the rectified sample. This arrangement structure is not only suitable for multi-stage pressure roller structures but can also be used in dual-pressure roller structures.

[0048] It should be further explained that in online coal quality testing, the installation height of the pressure roller 31 can be adjusted or a pressure roller 31 of different diameters can be replaced to adapt to coal samples of different particle sizes.

[0049] In some optional embodiments, the belt conveyor 10 is a belt conveyor, which includes a conveyor belt and a power unit for driving the conveyor belt; the ratio of the linear speed of the conveyor belt to the linear speed of the pressure roller 31 is adjustable. Both the power unit and the drive unit 32 can be electric motors, and the motors can be adjusted using frequency conversion technology, thereby precisely controlling the ratio of the linear speed of the conveyor belt and the pressure roller 31 according to the actual working conditions to optimize the pressing effect. It should be further noted that the belt conveyor 10 is not limited to a belt conveyor, and the conveyor belt used is not limited to a leather belt; stainless steel belts or conveyor belts of other materials can be used according to actual needs.

[0050] In some optional embodiments, the outer surface of the pressure roller 31 is coated with an anti-stick coating, or the outer surface of the pressure roller 31 is provided with a rubber coating layer. Coating the outer surface of the pressure roller 31 with an anti-stick coating or providing a rubber coating layer ensures that the pressure roller 31 has good anti-adhesion properties, preventing material from adhering to the surface of the pressure roller 31. This design effectively avoids material residue on the pressure roller 31, thereby maintaining the flatness of the sample surface. In one specific embodiment, the outer surface of the pressure roller 31 is coated with a Teflon coating.

[0051] In some optional embodiments, the material shaping and pressing device further includes a height limiting device 40, disposed between the feed inlet 11 and the rectifying device 20, for limiting the height of the material before it enters the rectifying device 20. Specifically, the height limiting device 40 includes a height limiting plate, which forms an adjustable gap with the bearing surface of the belt conveyor 10. In online coal quality testing, the gap between the height limiting plate and the bearing surface can be adjusted according to the particle size of different coal samples, thereby ensuring that the material is at a suitable height before entering the rectifying device 20 and avoiding excessive height leading to material accumulation.

[0052] In some optional embodiments, the material shaping and compaction device further includes a detection device disposed between the compaction device 30 and the discharge port 12, for detecting the compacted material, which then flows out from the discharge port 12. Specifically, in online coal quality detection, the detection device can be an infrared spectroscopy analysis device.

[0053] In some optional embodiments, the rectifier 20 includes a rectifier plate 21, a rectifier frame 22, and a motor 23. The rectifier plate 21 forms a material channel with the bearing surface of the belt conveyor 10, which guides and restricts the flow of material. The rectifier frame 22 moves along the side of the rectifier plate 21 under the drive of the motor 23. With this design, the rectifier plate 21 effectively guides the flow of material, while the rectifier frame 22, under the action of the motor 23, can not only break up agglomerated materials (such as agglomerated coal samples or flaked coal samples) to prevent the materials from agglomerating, but also prevent the materials from adhering to the surface of the rectifier plate 21. Specifically, the rectifier frame 22 can adopt a comb-like structure, which can more effectively disperse the materials, ensure the uniform flow of the materials, thereby improving the rectification effect and optimizing the subsequent sample pressing process.

[0054] The working process of this material shaping and pressing device is as follows: During material conveying, the material is first transported by the belt conveyor 10. When passing through the height limiting device 40, the height of the material is adjusted to a suitable range so that the height of the material maintains a certain proportional relationship with the height of the material at the subsequent pressing roller 31. Next, the material enters the rectifier 20. Under the action of the rectifier plate 21 and the rectifier frame 22, the material is flattened, spread evenly, and mixed, thereby reducing material accumulation and effectively breaking up clumps or flaked coal samples, ensuring uniform material distribution for subsequent pressing processing. Finally, the material passes through the pressing device 30 to form a sample that meets the requirements for subsequent rapid testing. The tested sample flows out through the discharge port 12 and is sent to the waste collection point for unified processing.

[0055] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A material shaping and pressing device, characterized in that, include: A belt conveyor has an inlet at one end and an outlet at the other end, used to convey materials from the inlet to the outlet. A rectifier is disposed between the inlet and the outlet for rectifying the material. A compaction device is installed between the rectifier and the discharge port to compact the rectified material.

2. The material shaping and pressing device according to claim 1, characterized in that, The pressing device includes two pressing rollers arranged sequentially along the material conveying direction, namely the first pressing roller and the second pressing roller; The diameter of the first pressure roller is the same as the diameter of the second pressure roller, and the installation height of the first pressure roller is higher than the installation height of the second pressure roller; Alternatively, the diameter of the first pressure roller is smaller than the diameter of the second pressure roller, and the installation height of the first pressure roller is the same as the installation height of the second pressure roller.

3. The material shaping and pressing device according to claim 1, characterized in that, The pressing device includes multiple pressing rollers arranged sequentially along the material conveying direction; The multiple pressure rollers have the same diameter, and their corresponding installation heights decrease sequentially from high to low along the material conveying direction; Alternatively, the diameters of the multiple pressure rollers may increase sequentially from small to large along the material conveying direction, with corresponding installation heights being consistent.

4. The material shaping and pressing device according to claim 2 or 3, characterized in that, The pressing device also includes a driving device and a transmission device. The shaft of one of the pressing rollers is directly connected to the output end of the driving device, and the other pressing rollers are linked to the directly connected pressing rollers through the transmission device.

5. The material shaping and pressing device according to claim 4, characterized in that, The belt conveyor is a belt conveyor, which includes a conveyor belt and a power unit for driving the conveyor belt; The ratio of the linear speed of the conveyor belt to the linear speed of the pressure roller is adjustable.

6. The material shaping and pressing device according to claim 4, characterized in that, The outer surface of the pressure roller is coated with an anti-stick coating, or the outer surface of the pressure roller is provided with a rubber coating layer.

7. The material shaping and pressing device according to claim 1, characterized in that, It also includes a height limiting device, which is set between the feed inlet and the rectifier to limit the height of the material before it enters the rectifier.

8. The material shaping and pressing device according to claim 7, characterized in that, The height limiting device includes a height limiting plate, and the height limiting plate forms an adjustable gap with the bearing surface of the belt conveyor.

9. The material shaping and pressing device according to claim 1, characterized in that, It also includes a detection device, which is set between the compaction device and the discharge port, for detecting the compacted material, and the detected material flows out from the discharge port.

10. The material shaping and pressing device according to claim 1, characterized in that, The rectifier includes a rectifier plate, a rectifier frame, and a motor. The rectifier plate and the bearing surface of the belt conveyor form a material channel. The rectifier frame moves along the side of the rectifier plate under the drive of the motor.

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