Coal sample mixing device
By designing a coal sample mixing device and adopting a motor-driven crushing component and sample separation structure, the problems of stratification and insufficient representativeness in traditional coal sample mixing methods are solved, achieving uniform mixing and separation of coal samples, and improving detection accuracy and equipment integration.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WANNENG MAANSHAN POWER GENERATION CO LTD
- Filing Date
- 2025-07-14
- Publication Date
- 2026-06-12
AI Technical Summary
Traditional coal sample mixing methods are prone to stratification and insufficient representativeness. Single-stage crushing structures cannot take into account both coarse and fine crushing, requiring multiple processing steps. The equipment integration is low, the operation is cumbersome, and it is easy to introduce human error.
Design a coal sample mixing device that uses a motor-driven crushing component and a sample separating structure. Through the cooperation of the second crushing component and the first crushing component, the coal sample is uniformly fed, crushed and separated in stages. The uniform distribution of the coal sample is achieved by using a conical structure and a partition plate.
It achieves uniform mixing and separation of coal samples, improves the representativeness of testing, simplifies the operation process, reduces human error, and enhances the integration of equipment.
Smart Images
Figure CN224345791U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of coal testing, and in particular to a coal sample mixing device. Background Technology
[0002] In the fields of coal production, testing and research, preparing uniform coal samples with particle size conforming to standards is a key step to ensure the accuracy of analytical results. Traditional coal sample mixing is usually done manually or by simple mechanical mixing, which can easily lead to coal sample stratification and insufficient representativeness. Single-stage crushing structures cannot take into account both coarse and fine crushing, requiring multiple processing. The collected coal samples need to be repackaged, which can easily introduce human error. Crushing, mixing and sample separation operations are carried out in stages, with low equipment integration and cumbersome operation.
[0003] Therefore, those skilled in the art have provided a coal sample mixing device to solve the problems mentioned in the background art. Utility Model Content
[0004] To address the problems mentioned in the background art, this application provides a coal sample mixing device.
[0005] The coal sample mixing device provided in this application adopts the following technical solution:
[0006] A coal sample mixing device includes a shell, a second crushing component fixedly connected to the upper inner side of the shell, a motor fixedly connected to the center of the upper end of the shell, a drive rod fixedly connected to the output end of the motor extending into the shell, a first crushing component in the shape of a frustum fixedly connected to the bottom end of the drive rod, a collection hopper fixedly connected to the inner side of the shell and below the first crushing component, an internally threaded pipe centrally connected to the bottom end of the shell, a sampling disc threadedly connected to the inner side of the internally threaded pipe, a feeding pipe fixedly connected to the side of the upper end of the shell, a second feeding hopper centrally connected to the upper end of the feeding pipe, and a mounting frame installed near the edge of the bottom end of the shell.
[0007] Preferably, a cavity is provided through the upper and lower ends of the second crusher. The upper part of the cavity is cylindrical and the lower part is tapered from bottom to top. Several annularly arranged second crushing strips and first crushing strips are fixed to the near ends of the second crusher and the first crusher, respectively. A first feeding hopper is fixed to the lower outer side of the drive rod. The bottom end of the first feeding hopper is inclined and has a feeding hole. The first feeding hopper is located on the upper inner side of the second crusher, and the bottom end of the feeding pipe extends into the first feeding hopper.
[0008] Preferably, a column is fixedly connected to the center of the inner side of the sampling disk, and several annularly arranged partition plates are fixedly connected between the outer side of the column and the inner sidewall of the sampling disk.
[0009] Preferably, the upper end of the column is tapered, and a sampling container is provided inside the sampling tray and located between the two partition plates.
[0010] Preferably, the distance between the cavity at the lower part of the second crushing bar and the first crushing element gradually decreases from top to bottom.
[0011] In summary, this application includes the following beneficial technical effects:
[0012] 1. The motor drives the first feeding hopper to rotate via a drive rod. Coal samples are evenly fed into the first feeding hopper through the second feeding hopper and feeding pipe. The fed coal samples are then evenly fed into the second crushing component through the feeding hole. The second and first crushing components, in conjunction with the first and second crushing bars, mix and crush the coal samples. The crushed coal samples are collected in the collecting hopper and flow into the sampling tray. The conical structure at the top of the column guides the coal samples evenly into the sampling tray. A separator plate equally divides the coal samples into the sampling containers, eliminating human sampling bias and improving the representativeness of the test. The sampling tray and the internally threaded pipe are detachably connected for easy and quick replacement, cleaning, and sampling. This system effectively mixes, crushes, and separates coal samples. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the overall structure of this application;
[0014] Figure 2 This is a schematic diagram of the internal structure of this application;
[0015] Figure 3 This is a schematic diagram of the upper part of this application;
[0016] Figure 4 This is a schematic diagram of the feeding hopper of this application;
[0017] Figure 5 This is a structural schematic diagram of the first and second fragments of this application;
[0018] Figure 6 This is a schematic diagram of the sampling disk of this application.
[0019] Explanation of reference numerals in the attached drawings: 1. Shell; 2. Mounting bracket; 3. Motor; 4. Drive rod; 5. First crushing component; 6. First crushing bar; 7. Second crushing component; 8. Second crushing bar; 9. First feeding hopper; 10. Feeding hole; 11. Collection hopper; 12. Internally threaded pipe; 13. Sampling plate; 14. Column; 15. Divider plate; 16. Sampling container; 17. Feeding pipe; 18. Second feeding hopper. Detailed Implementation
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0021] Example 1
[0022] like Figure 1 , 2 As shown in Figures 3 and 5, this application discloses a coal sample mixing device, including a shell 1. A second crushing component 7 is installed on the upper inner side of the shell 1. A motor 3 is installed in the center of the upper end of the shell 1. A drive rod 4 is installed inside the shell 1 with the output end of the motor 3. A frustum-shaped first crushing component 5 is installed at the bottom end of the drive rod 4. A collection hopper 11 is installed on the inner side of the shell 1 and below the first crushing component 5. An internally threaded pipe 12 is installed in the center of the bottom end of the shell 1. A sampling plate 13 is installed on the inner side of the internally threaded pipe 12. A feeding pipe 17 is installed through the upper end of the shell 1 near the side. A second feeding hopper 18 is installed at the upper end of the feeding pipe 17. An installation frame 2 is installed at the bottom end of the shell 1 near the edge.
[0023] The coal sample is fed into the first feeding hopper 9 through the second feeding hopper 18 and the feeding pipe 17. The motor 3 drives the drive rod 4 to rotate, and the coal sample leaking from the feeding hole 10 is evenly fed between the second crusher 7 and the first crusher 5. The drive rod 4 drives the first crusher 5 to rotate synchronously. The second crushing bar 8 and the first crushing bar 6 cooperate to crush and mix the coal sample. The crushed coal sample falls into the collection hopper 11 for collection, and then falls into the sampling plate 13 through the collection hopper 11.
[0024] like Figure 2 , 3 As shown in Figures 4 and 5, cavities are provided at both ends of the second crusher 7. The upper part of the cavity is cylindrical, and the lower part of the cavity tapers from bottom to top. Several annularly arranged second crushing strips 8 and first crushing strips 6 are installed near the ends of the second crusher 7 and the first crusher 5, respectively. A first feeding hopper 9 is installed on the lower outer side of the drive rod 4. The bottom end of the first feeding hopper 9 is inclined and has a feeding hole 10. The first feeding hopper 9 is located on the upper inner side of the second crusher 7. The bottom end of the feeding pipe 17 extends into the first feeding hopper 9. The drive rod 4 drives the first feeding hopper 9 to rotate. The coal sample in the first feeding hopper 9 is evenly fed between the second crusher 7 and the first crusher 5 through the feeding hole 10. The drive rod 4 drives the first crusher 5 to rotate, and the coal sample is crushed by the second crushing strips 8 and the first crushing strips 6 between the second crusher 7 and the first crusher 5.
[0025] like Figure 5 As shown, the distance between the cavity at the bottom of the second crushing bar 8 and the first crushing component 5 gradually decreases from top to bottom. By gradually reducing the distance between the cavity at the bottom of the second crushing bar 8 and the first crushing component 5, the crushing precision of the coal sample can be improved.
[0026] like Figure 6 As shown, a column 14 is installed in the center of the inner side of the sampling plate 13. Several ring-shaped partition plates 15 are installed between the outer side of the column 14 and the inner wall of the sampling plate 13. The coal sample falling along the inner wall of the collection hopper 11 falls into the sampling plate 13 and is divided and evenly distributed by the partition plates 15.
[0027] like Figure 6 As shown, the upper end of the column 14 is designed in a conical shape. A sampling container 16 is set inside the sampling plate 13 and located between the two partition plates 15. By setting the conical column 14, the falling coal sample can fall evenly into the sampling plate 13 along the side wall of the upper end of the column 14. By using the sampling container 16, it is easy to take out the evenly divided coal sample.
[0028] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.
[0029] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.
[0030] The implementation principle of a coal sample mixing device in this application embodiment is as follows:
[0031] In use, the coal sample enters the first feeding hopper 9 through the second feeding hopper 18 and the feeding pipe 17. The motor 3 drives the drive rod 4 and the fixed first feeding hopper 9 to rotate. The coal sample is evenly sprinkled into the gap between the second crusher 7 and the first crusher 5 through the feeding hole 10. The drive rod 4 drives the first crusher 5, which is shaped like a frustum, to rotate. The second crushing strip 8 on its surface and the first crushing strip 6 on the second crusher 7 form a crushing structure. The coal sample is squeezed and sheared in the gradually narrowing crushing chamber, and the particle size is reduced step by step, achieving efficient crushing and forced mixing. The crushed coal sample falls into the collecting hopper 11 and enters the sampling plate 13 connected to the internal threaded pipe 12 through the bottom end. The coal sample is divided along the upper conical surface of the column 14 and separated by the partition plate 15. It is collected by the sampling container 16, which facilitates the removal of the coal sample and completes the automatic sampling. When it is necessary to remove the coal sample, the sampling plate 13 is rotated to separate the sampling plate 13 from the internal threaded pipe 12, and the sampling container 16 can be taken out.
[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A coal sample mixing device, characterized in that, The device includes a housing (1), a second crushing component (7) is fixedly connected to the upper inner side of the housing (1), a motor (3) is fixedly connected to the upper center of the housing (1), a drive rod (4) is fixedly connected to the output end of the motor (3) inside the housing (1), a frustum-shaped first crushing component (5) is fixedly connected to the bottom end of the drive rod (4), a collection hopper (11) is fixedly connected to the inner side of the housing (1) and below the first crushing component (5), an internal threaded pipe (12) is centrally connected to the bottom of the housing (1), a sampling plate (13) is threadedly connected to the inner side of the internal threaded pipe (12), a feeding pipe (17) is fixedly connected to the upper side of the housing (1), a second feeding hopper (18) is centrally connected to the upper end of the feeding pipe (17), and an installation frame (2) is installed at the bottom edge of the housing (1).
2. The coal sample mixing device according to claim 1, characterized in that: A cavity is provided at both the upper and lower ends of the second crushing component (7). The upper part of the cavity is cylindrical and the lower part of the cavity is tapered from bottom to top. Several ring-shaped second crushing strips (8) and first crushing strips (6) are fixed to the near ends of the second crushing component (7) and the first crushing component (5), respectively. A first feeding hopper (9) is fixed to the lower outer side of the drive rod (4). The bottom end of the first feeding hopper (9) is inclined. A feeding hole (10) is provided at the bottom end of the first feeding hopper (9). The first feeding hopper (9) is located on the upper inner side of the second crushing component (7). The bottom end of the feeding pipe (17) extends into the first feeding hopper (9).
3. The coal sample mixing device according to claim 1, characterized in that: A column (14) is fixedly connected to the center of the inner side of the sampling disk (13), and several ring-shaped partition plates (15) are fixedly connected between the outer side of the column (14) and the inner sidewall of the sampling disk (13).
4. The coal sample mixing device according to claim 3, characterized in that: The upper end of the column (14) is tapered, and a sampling container (16) is provided inside the sampling plate (13) and located between the two partition plates (15).
5. A coal sample mixing device according to claim 2, characterized in that: The distance between the cavity at the bottom of the second crushing bar (8) and the first crushing piece (5) gradually decreases from top to bottom.