Coal sampling machine

Abstract

The utility model relates to a coal sampling machine. The coal sampling machine comprises a box body; the functional main body is arranged in the box body, the functional main body is used for treating incoming coal to prepare a coal sample, a sample collecting part is arranged in the box body, an observation opening is formed in the position, corresponding to the sample collecting part, of the box body, an observation door is hinged to the position, corresponding to the observation opening, of the box body, and a sealing strip is arranged on the side, facing the box body, of the observation door; the sealing strip can surround the periphery of the observation opening and is used for abutting against the box body. The observation door is hinged to the observation opening, when the sample collection position does not need to be observed, the observation opening is closed through the observation door, and the sealing strip abuts against the position between the box body and the observation door, so that a good sealing effect can be achieved. When a sample collection position needs to be observed, the observation door is controlled to rotate (be hinged) relative to the box body, the observation opening can be opened, the condition of the sample collection position can be observed and adjusted, the door closing and door opening process can be rapidly completed with one hand, and operation is convenient and rapid.

Description

Technical Field

[0001] This disclosure relates to the field of coal sample preparation technology, specifically to a coal sample preparation machine. Background Technology

[0002] Coal sample preparation machines can automate the entire process of coal preparation and management, including weighing, crushing, reducing, drying, pulverizing, collecting, cleaning, packaging, coding and identification, sample collection, information collection, and dust removal. Specifically, they can produce coal samples with full moisture content, coal samples for storage and retrieval, and coal samples for analytical testing, for component analysis.

[0003] At the sample outlet of a coal sample preparation machine, an observation port and an observation door are typically required for periodic monitoring of the operation at that location. Since a large amount of coal dust is generated during the crushing process, the observation door needs to be sealed when observation is not required to prevent dust pollution. When monitoring the sample outlet's operation is needed, the observation door can be opened for observation and adjustment. However, in related technologies, the observation door is secured to the observation port with multiple clips. Each time observation is performed, the observation door must be lifted upwards with both hands to open each clip individually to detach it from the observation port. Installation requires lifting the observation door back and reattaching it to the observation port using the multiple clips. This operation is time-consuming, labor-intensive, and inconvenient. Utility Model Content

[0004] The purpose of this disclosure is to provide a coal sample preparation machine to at least partially solve the problems existing in the related art.

[0005] To achieve the above objectives, this disclosure provides a coal sample preparation machine, comprising:

[0006] Box; and

[0007] The main functional unit, housed within the box, is used to process incoming coal to obtain coal samples.

[0008] The box contains a sample collection area, and an observation port is provided at the position corresponding to the sample collection area. An observation door is hinged to the box at the position corresponding to the observation port. A sealing strip is provided on the side of the observation door facing the box. The sealing strip can surround the outer periphery of the observation port and is used to abut against the box.

[0009] Optionally, a flange protruding towards the housing is formed on the side of the observation door corresponding to the housing near the edge. The flange extends along the outer contour of the observation door and surrounds the outer periphery of the observation opening. The sealing strip is adhered to the side of the flange facing the housing.

[0010] Optionally, one edge of the observation door is hinged to the housing via multiple sets of coaxial and spaced-apart hinge assemblies.

[0011] The hinge component includes:

[0012] The upper hinge is connected to one edge of the observation door; and

[0013] The lower hinge is connected to the side wall of the housing.

[0014] The upper hinge and the lower hinge are coaxial and can rotate relative to each other.

[0015] Optionally, the observation door is provided with a locking part that allows the observation door to be tightly fitted against the housing.

[0016] Optionally, the locking part includes two magnets disposed on the observation door away from the hinge assembly. The two magnets are located inside the stop and are spaced apart from each other in the height direction. In the direction perpendicular to the observation door, the magnets do not protrude from the stop.

[0017] Optionally, the observation door has multiple locking holes, and sealing stickers for sealing the locking holes are respectively provided at the positions corresponding to the multiple locking holes on the observation door.

[0018] Optionally, the observation door is provided with a viewing window.

[0019] Optionally, the sample collection area includes a total moisture coal sample collection area, a backup sample collection area, and an analytical sample collection area, each of which is equipped with a corresponding observation gate.

[0020] Optionally, the functional unit includes a hopper and a sample receiving box for collecting coal samples, located at the sample collection point, and a conveyor belt for transferring the coal samples into the hopper.

[0021] Optionally, the main functional unit may further include a crushing component, a drying component, and a grinding component disposed upstream of the hopper.

[0022] The above technical solution hinges the observation door to the observation port. When observation of the sample collection area is not required, the observation port can be closed via the observation door, and the sealing strip between the box body and the observation door provides a good seal, preventing coal dust from escaping into the environment. When observation of the sample collection area is needed, simply controlling the rotation (hinged connection) of the observation door relative to the box body opens the observation port, allowing for observation and adjustment of the sample collection area. The opening and closing process can be quickly completed with one hand, making the operation convenient and fast.

[0023] Other features and advantages of the present disclosure will be described in detail in the following detailed description. Attached Figure Description

[0024] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following detailed description, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0025] Figure 1 This is a schematic diagram of a coal sample preparation machine exemplarily shown according to this disclosure;

[0026] Figure 2 This is an example of an inner front view of an observation door shown according to this disclosure;

[0027] Figure 3 yes Figure 1 A magnified view of part A in the middle.

[0028] Explanation of reference numerals in the attached figures

[0029] 1-Box body; 2-Observation port; 3-Observation door; 31-Card hole; 32-Sealing sticker; 4-Sealing strip; 5-Hinge assembly; 51-Upper hinge; 52-Lower hinge; 6-Side edge; 7-Magnet; 81-Total moisture coal sample collection area; 82-Sample collection area for inspection; 83-Analytical sample collection area. Detailed Implementation

[0030] The following describes the specific embodiments of the present disclosure in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present disclosure and are not intended to limit the present disclosure.

[0031] In this disclosure, unless otherwise stated, the directional terms "inner" and "outer" may refer to the orientation of the relevant components when they are used together, or they may refer to the structure of the relevant components themselves. For example, the "outer periphery" of the baffle extending along the outer contour of the observation door and surrounding the observation opening refers to the baffle surrounding the observation opening, with the observation opening falling inside the closed area formed by the baffle; the two magnets are located "inner" on the baffle and spaced apart from each other in the height direction. Here, "inner" refers to the inner side of the closed area formed by the baffle, and "height direction" refers to the direction perpendicular to the ground.

[0032] In this disclosure, the terms "first," "second," etc., are used to distinguish one element from another and do not indicate any order or importance. When the following description relates to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0033] Reference Figure 1-Figure 3This disclosure exemplarily illustrates a coal sample preparation machine, including a housing 1 and a functional main body disposed within the housing 1. The functional main body is used to process incoming coal to obtain coal samples. "Incoming coal" refers to coal manually fed into the sample preparation machine. The functional main body processes the incoming coal to obtain coal samples. The functional main body may have crushing components, drying components, grinding components, etc., as mentioned below, which will be described in detail below. This disclosure does not limit the specific composition of the functional main body, and it can be adaptively designed according to actual production needs. The housing 1 may have a sample collection point, i.e., this location is used to collect the coal samples prepared by the functional main body. An observation port 2 is provided at the location of the housing 1 corresponding to the sample collection point. An observation door 3 is hinged at the location of the housing 1 corresponding to the observation port 2, so that the observation door 3 can be opened or closed by rotation. A sealing strip 4 is provided on the side of the observation door 3 facing the housing 1. The sealing strip 4 can surround the outer periphery of the observation port 2 and is used to abut against the housing 1, i.e., the outer contour of the observation door 3 is larger than the outer contour of the observation port 2.

[0034] The sealing strip 4 can be constructed as a ring shape that matches the outer contour of the observation door 3. Specifically, it can be a rubber strip, cotton strip, etc. When the observation door 3 is closed, the sealing strip 4 is squeezed between the observation door 3 and the housing 1 to seal the gap between the observation door 3 and the housing 1 and prevent internal dust from escaping. The sealing strip 4 can be installed on the observation door 3 by adhesive bonding.

[0035] The aforementioned "hing" refers to the hinge of one edge of the observation door 3 to the housing 1, so that the observation door 3 can rotate relative to the housing 1 around the hinge axis to open and close. Specifically, this can be achieved through hinges, etc.

[0036] By using the above technical solution, the observation door 3 is hinged to the observation port 2. When observation of the sample collection area is not required, the observation port 2 can be closed by the observation door 3, and the sealing strip 4 abutting against the box body 1 and the observation door 3 can achieve a good sealing effect, preventing coal dust from escaping into the environment. When observation of the sample collection area is required, simply control the observation door 3 to rotate relative to the box body 1 (hinged) to open the observation port 2, allowing observation and adjustment of the sample collection area. The opening and closing process can be quickly completed with one hand, making the operation convenient and fast.

[0037] Reference Figure 2In the embodiments of this disclosure, a flange 6 protruding towards the housing 1 can be formed on the side of the observation door 3 near its edge. The flange 6 extends along the outer contour of the observation door 3 and surrounds the outer periphery of the observation opening 2. The sealing strip 4 can be adhered to the side of the flange 6 facing the housing 1. By providing the flange 6, it is easier to hinge the observation door 3 to the housing 1, and when the observation door 3 is closed, the protruding flange 6 is more conducive to pressing the sealing strip 4 against the housing 1, forming a better sealing effect. In the embodiments of this disclosure, the main body of the observation door 3 can be made of steel plate, and its flange 6 can be formed by bending and rolling the edge of the steel plate. Alternatively, in some other embodiments, the flange 6 can also be installed near the edge of the observation door 3 by welding.

[0038] This disclosure does not impose restrictions on how the observation door 3 is hinged to the housing 1, for example in Figure 3 In the illustrated embodiment, one edge of the observation door 3 can be hinged to the housing 1 via multiple sets of coaxial and spaced-apart hinge assemblies 5, specifically two sets, three sets, etc. The hinge assembly 5 may include: an upper hinge 51 connected to one edge of the observation door 3; and a lower hinge 52 connected to the side wall of the housing 1. The upper hinge 51 and the lower hinge 52 are coaxial and rotatable relative to each other. Specifically, the upper hinge 51 and the lower hinge 52 can be fixed to their respective positions with bolts. By setting the hinge assembly 5, the observation door 3 can rotate relative to the housing 1, facilitating the opening and closing of the observation port 2, making operation convenient and effortless. Furthermore, in some other embodiments, the observation door 3 can also be hinged to the housing 1. Alternatively, the hinge assembly 5 may also include a left hinge and a right hinge, one connected to the housing 1 and the other connected to the observation door 3.

[0039] In the embodiments of this disclosure, the observation door 3 may be provided with a locking part that allows the observation door 3 to be tightly fitted against the housing 1. By providing the locking part, the observation door 3 can be tightly fitted against the housing 1 when closed, preventing accidental opening or insufficient sealing. When it is necessary to open the observation door 3, only a certain amount of external force needs to be applied manually.

[0040] This disclosure does not limit the specific structure of the locking part, for example, in Figure 2 In the illustrated embodiment, the locking part may include two magnets 7 disposed on the observation door 3 away from the hinge assembly 5. The two magnets 7 are located inside the retaining edge 6 and spaced apart from each other in the height direction. In the direction perpendicular to the observation door 3, the magnets 7 do not protrude from the retaining edge 6 to avoid interference between the magnets 7 and the observation door 3 when closed, which would prevent the observation door 3 from being tightly fitted to the housing 1. By providing the magnets 7, when the observation door 3 is closed, the magnets 7 can generate a magnetic attraction with the housing 1, thereby ensuring the reliability and sealing of the observation door 3 when closed and preventing accidental opening. In addition, in some other embodiments, the locking part may also include a latch disposed on the observation door 3 and the housing 1.

[0041] Reference Figure 1 and Figure 2 In the embodiments of this disclosure, the observation door 3 may have multiple locking holes 31. Sealing stickers 32, such as adhesive tape, or sealing plugs, may be provided at positions corresponding to the multiple locking holes 31 on the observation door 3 for sealing the locking holes 31. Sealing the locking holes 31 with the sealing stickers 32 prevents coal dust inside the housing 1 from escaping through the locking holes 31. It should be noted that in the original technology (before improvement), the locking holes 31 were used to fasten the observation door 3 to the observation port 2. This application directly improves upon the original observation door 3, thus eliminating the need to replace it with a new observation door 3 and reducing improvement and production costs.

[0042] In the embodiments of this disclosure, the observation door 3 may be equipped with a viewing window. The viewing window may be a glass window, a visible plastic window, or the like, installed on the observation door 3. With this design, when it is necessary to observe the sample collection area, observation can be performed directly through the viewing window without opening the observation door 3. When it is observed that adjustment of the components at the sample collection area is required, the observation door 3 is then opened. This design avoids repeatedly opening the observation door 3, reducing the workload of inspection and the amount of coal dust escaping.

[0043] In embodiments of this disclosure, reference is made to Figure 1 The sample collection area can include a total moisture coal sample collection area 81, a reference sample collection area 82, and an analytical sample collection area 83. Each of these areas can be equipped with a corresponding observation door 3. Since the coal sample preparation machine has multiple sample collection areas, the workload of opening the doors for observation is significant. Improving the observation door 3 to the aforementioned hinged design can greatly reduce this workload. The total moisture coal sample collection area 81 and the reference sample collection area 82 can be configured to output one or two samples according to customer needs. The analytical sample collection area 83 is generally configured to output two samples. Since these three collection areas are well-known to those skilled in the art, they will not be described further here.

[0044] In embodiments of this disclosure, the functional components may include a hopper (not shown in the figure) and a sample receiving box (not shown in the figure) for collecting coal samples, both located at the sample collection point, as well as a conveyor belt (not shown in the figure) for transferring the coal samples into the hopper. During observation, it is necessary to monitor the coal condition on the conveyor belt, the placement and angle of the hopper and sample receiving box, and make timely adjustments if any abnormalities occur.

[0045] Furthermore, in embodiments of this disclosure, the functional unit may also include a crushing assembly (not shown in the figure), a drying assembly (not shown in the figure), and a grinding assembly (not shown in the figure) disposed upstream of the hopper to crush, dry, and grind the coal. This process generates a large amount of coal dust, and the aforementioned sealing strip 4 is designed to effectively prevent coal dust from escaping. Additionally, the functional unit may also include a feeding and weighing assembly, a transition conveyor assembly, a slitting assembly, a double-roller slitting assembly, a waste conveyor assembly, etc.

[0046] To facilitate understanding of the technical solution, the specific details of the door-opening observation work will be described here, taking into account the three collection points and different time periods mentioned above. Specifically:

[0047] Before sample preparation, the sample preparation machine is inspected. Through the first observation gate (corresponding to the total moisture coal sample collection point 81), it is checked whether there is any residue on the total moisture conveyor belt and the total moisture servo belt, whether the belts are operating normally, whether there is any powder accumulation on the total moisture sample receiving group (feed hopper, sample box, sample receiving platform and surrounding area), and whether the total moisture sample receiving box is placed correctly. Through the second observation gate (corresponding to the standby sample collection point 82), the operation of the standby sample conveyor and the receiving conveyor can be observed, whether there is any residue on the standby sample conveyor belt, whether there is any powder or coal accumulation on the standby sample receiving group, and whether the standby sample coal is placed correctly. Through the third observation gate (corresponding to the analytical sample collection point 83), it is observed whether there is any powder accumulation on the analytical sample conveyor belt, and whether there is any coal accumulation on the reducing device, the feeding hopper, the sample receiving platform, and the sample receiving box. Simultaneously, during the belt idling stage before sample preparation, residual coal powder on the belt and the two-stage plate can be carefully cleaned with a brush through observation gate 3 to ensure thorough cleaning and eliminate any residue.

[0048] During the sample preparation process, regular inspections should be conducted to observe the operation of the sample preparation machine. Through three observation doors 3, the operation of the sample delivery belt can be observed, including whether it is running off-center, worn, or spilling samples. The coal flow on the belt (whether the coal layer thickness, flow rate, and flow velocity are normal) can also be monitored. The material discharge can be checked for spillage or overflow. If the sample receiving box, discharge hopper, etc., are tilted, they can be quickly corrected. At the same time, observation doors 3 can be used to observe whether the reducing device is operating normally, and whether the dividing disc and dividing brush of the reducing device are operating normally, to ensure the uniformity and accuracy of the two coal samples for analysis.

[0049] When the sample preparation is about to end, observe whether the coal flow on the conveyor belt has completely passed and the condition of the remaining coal sample to ensure the representativeness of the coal sample.

[0050] The preferred embodiments of this disclosure have been described in detail above with reference to the accompanying drawings. However, this disclosure is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this disclosure, various simple modifications can be made to the technical solutions of this disclosure, and these simple modifications all fall within the protection scope of this disclosure.

[0051] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this disclosure will not describe the various possible combinations separately.

[0052] In addition, the various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A coal sample preparation machine, characterized in that, include: Box; as well as The main functional unit, housed within the box, is used to process incoming coal to obtain coal samples. The box contains a sample collection area, and an observation port is provided at the position corresponding to the sample collection area. An observation door is hinged to the box at the position corresponding to the observation port. A sealing strip is provided on the side of the observation door facing the box. The sealing strip can surround the outer periphery of the observation port and is used to abut against the box.

2. The coal sample preparation machine according to claim 1, characterized in that, Near the edge of the side of the observation door corresponding to the housing, a flange protruding towards the housing is formed. The flange extends along the outer contour of the observation door and surrounds the outer periphery of the observation opening. The sealing strip is adhered to the side of the flange facing the housing.

3. The coal sample preparation machine according to claim 2, characterized in that, One edge of the observation door is hinged to the housing via multiple sets of coaxial and spaced-apart hinge assemblies. The hinge component includes: The upper hinge is connected to one edge of the observation door; and The lower hinge is connected to the side wall of the housing. The upper hinge and the lower hinge are coaxial and can rotate relative to each other.

4. The coal sample preparation machine according to claim 3, characterized in that, The observation door is equipped with a locking part that allows the observation door to be tightly fitted against the box body.

5. The coal sample preparation machine according to claim 4, characterized in that, The locking part includes two magnets disposed on the observation door away from the hinge assembly. The two magnets are located inside the stop and are spaced apart from each other in the height direction. In the direction perpendicular to the observation door, the magnets do not protrude from the stop.

6. The coal sample preparation machine according to claim 1, characterized in that, The observation door has multiple locking holes, and sealing stickers for sealing the locking holes are respectively provided at the positions corresponding to the multiple locking holes of the observation door.

7. The coal sample preparation machine according to claim 1, characterized in that, The observation door is equipped with a viewing window.

8. The coal sample preparation machine according to any one of claims 1-7, characterized in that, The sample collection area includes a total moisture coal sample collection area, a backup sample collection area, and an analytical sample collection area. Each of the total moisture coal sample collection area, the backup sample collection area, and the analytical sample collection area is equipped with a corresponding observation gate.

9. The coal sample preparation machine according to any one of claims 1-7, characterized in that, The main functional components include a hopper and a sample receiving box for collecting coal samples, located at the sample collection point, and a conveyor belt for transferring the coal samples into the hopper.

10. The coal sample preparation machine according to claim 9, characterized in that, The main functional components also include a crushing component, a drying component, and a grinding component located upstream of the hopper.

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