A coal dust sampler
By designing a sealing structure for the pulverized coal sampler, the problem of pulverized coal being blown away or spilled during sampling was solved, achieving both sealing effect and ease of operation, and ensuring the accuracy of sampling results.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 呼伦贝尔金新化工有限公司
- Filing Date
- 2025-06-24
- Publication Date
- 2026-07-14
AI Technical Summary
Coal dust is easily blown away or spilled during the sampling process, leading to deviations in the analysis results. Existing samplers lack effective sealing devices.
A pulverized coal sampler was designed, comprising a sampling tube, a sealing tube, an inner tube, a drive assembly, and a locking assembly. The drive assembly controls the rotation of the sealing tube to open or close the feed inlet, and the locking assembly ensures a sealing effect.
It effectively prevents coal dust from being blown away or spilled during the sampling process, ensuring the accuracy and stability of the sampling results and simplifying the operation process.
Smart Images
Figure CN224500025U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of coal powder sampling technology, specifically a coal powder sampler. Background Technology
[0002] In the production process, pulverized coal is mainly produced by grinding raw coal into pulverized coal through a coal milling system and then drying it. The qualified pulverized coal is then fed into a gasifier for gasification. To monitor the grinding quality of the pulverized coal in a timely manner, it is necessary to periodically sample the pulverized coal at the outlet of the coal milling system.
[0003] The current problem is that, since the particle size of coal powder is between 10 and 250 micrometers and it is in powder form, when the coal powder falls into the sampler during the sampling process, if there is no sealing device in the sampler's trough, the coal powder in the trough will be blown away, causing the analysis results to deviate significantly from the true values; at the same time, after sampling, it is necessary to support the sample horizontally to prevent the coal powder from spilling.
[0004] Therefore, this application proposes a new design scheme for the sampler. Utility Model Content
[0005] The purpose of this invention is to provide a coal powder sampler to solve the problems mentioned in the background art.
[0006] This utility model is implemented by the following technical solution:
[0007] A pulverized coal sampler includes a sampling tube, a sealing tube, an inner tube, a driving assembly, and a locking assembly. The sealing tube is rotatably fitted inside the sampling tube. A first inlet is provided on one side of the sampling tube, and a square hole is provided at the end of the sampling tube away from the first sampling inlet. A second inlet is provided on one side of the sealing tube. An inner tube is fixed to the end of the sealing tube away from the second inlet. The inner tube is rotatably fitted inside the sampling tube and located near the square hole. The driving assembly is slidably installed inside the inner tube. The driving assembly controls the rotation of the sealing tube relative to the sampling tube through sliding, thereby opening or closing the first inlet of the sampling tube. A locking assembly is provided at the end of the sampling tube near the square hole for locking the driving assembly.
[0008] Preferably, the inner surface of the inner tube is provided with a spiral guide groove, and the driving assembly includes a circular slider, a square rod, a round rod, and a hemisphere; the middle part of the circular slider and one end of the square rod are fixed, the other end of the square rod slides through a square hole, the other end of the square rod is fixed to the middle part of the round rod, the circular slider slides inside the inner tube, and a hemisphere is fixed on the peripheral surface of the circular slider, and the hemisphere is movably placed in the spiral guide groove.
[0009] Preferably, the square rod has a through hole, and the locking assembly includes two symmetrically arranged spring plates. One end of the spring plate is fixed to one end of the sampling tube and located outside the square hole. The middle part of the spring plate has a hemispherical protrusion, which can be engaged in the through hole of the square rod.
[0010] Preferably, the lengths of the first feed inlet and the second feed inlet are equal.
[0011] The advantages of this utility model are: simple structure, by pulling the square rod, the inner tube and the closed tube are driven to rotate by the hemisphere on the circular slider, so as to close or open the first feed port on the sampling tube. After closing, it can effectively prevent the coal powder from being blown away and spilled. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the structure of this utility model;
[0013] Figure 2 for Figure 1 Enlarged view of point A in the middle;
[0014] Figure 3 for Figure 1 Structural changes are shown in the reference diagram;
[0015] Figure 4 for Figure 3 Enlarged view of point B in the middle;
[0016] Figure 5 for Figure 1 Structural sectional view;
[0017] Figure 6 This is a schematic diagram of the sampling tube.
[0018] Figure 7 This is a structural diagram of the sealing tube and the inner tube;
[0019] Figure 8 This is a schematic diagram of the drive component.
[0020] Figure 9 This is a schematic diagram of the locking assembly.
[0021] Figure 10 for Figure 9 The structural changes are shown in the reference diagram.
[0022] In the diagram: 1. Sampling tube, 1.1. First feed inlet, 1.2. Square hole, 2. Sealing tube, 2.1. Second feed inlet, 3. Inner tube, 3.1. Spiral guide groove, 4. Drive assembly, 4.1. Circular slider, 4.2. Square rod, 4.21. Through hole, 4.3. Round rod, 4.4. Hemisphere, 5. Locking assembly, 5.1. Spring pressure plate, 5.2. Protrusion. Detailed Implementation
[0023] 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.
[0024] Please see Figures 1-10 This utility model provides a technical solution for a coal powder sampler:
[0025] A coal powder sampler includes a sampling tube 1, a sealing tube 2, an inner tube 3, a driving assembly 4, and a locking assembly 5; the sealing tube 2 is rotatably sleeved inside the sampling tube 1, a first feed port 1.1 is opened on one side of the sampling tube 1, and a square hole 1.2 is opened at the end of the sampling tube 1 away from the first sampling port 1.1, and the lengths of the first feed port 1.1 and the second feed port 2.1 are equal.
[0026] A second inlet 2.1 is provided on one side of the sealing tube 2. An inner tube 3 is fixed to the end of the sealing tube 2 away from the second inlet 2.1. The inner tube 3 is rotatably sleeved inside the sampling tube 1 and located near the square hole 1.2. A spiral guide groove 3.1 is provided on the inner surface of the inner tube 3. A driving assembly 4 is slidably provided inside the inner tube 3. The driving assembly 4 includes a circular slider 4.1, a square rod 4.2, a round rod 4.3, and a hemisphere 4.4. The middle part of the circular slider 4.1 and one end of the square rod 4.2 are fixed. The other end of the square rod 4.2 slides through the square hole 1.2. The other end is fixed to the middle of the round rod 4.3. The circular slider 4.1 slides inside the inner tube 3. A hemisphere 4.4 is fixed to the peripheral surface of the circular slider 4.1 and is movably placed inside the spiral guide groove 3.1. The circular slider 4.1 slides in the inner tube 3, causing the sealing tube 2 to rotate. The rotation of the sealing tube 2 changes the opening direction of the second feed port 2.1. When the second feed port 2.1 is open downwards, it covers the first feed port 1.1 to form a seal; when the second feed port 2.1 is open upwards, it opens the first feed port 1.1. That is, the drive assembly 4 controls the rotation of the sealing tube 2 relative to the sampling tube 1 by sliding, thereby opening or closing the first feed port 1.1 of the sampling tube 1.
[0027] To prevent accidental opening of the first feed inlet 1.1 after sampling, a through hole 4.21 is provided on the square rod 4.2. A locking assembly 5 for locking the drive assembly 4 is provided at one end of the sampling tube 1 near the square hole 1.2. The locking assembly 5 includes two symmetrically arranged spring pressure plates 5.1. One end of the spring pressure plate 5.1 is fixed to one end of the sampling tube 1 and located outside the square hole 1.2. The middle part of the spring pressure plate 5.1 has a hemispherical protrusion 5.2, which can be engaged in the through hole 4.21 of the square rod 4.2.
[0028] The working principle is as follows: push the square rod 4.2 into the inner tube 3. At this time, the inner tube 3 will start to rotate clockwise as the circular slider 4.1 slides in continuously until the circular slider 4.1 is pushed into the innermost part of the inner tube 3, so that the second feed port 2.1 faces upward and the first feed port 1.1 of the sampling tube 1 is fully opened, and sampling begins.
[0029] After sampling, pull the square rod 4.2 into the inner tube 3. The inner tube 3 will then rotate counter-clockwise as the circular slider 4.1 slides out until the through hole 4.21 protrudes from the outside of the sampling tube 1. Simultaneously, the spring pressure plate 5.1, due to its elasticity, will quickly cause the protrusion 5.2 to engage with the through hole 4.21 of the square rod 4.2, making the second feed inlet 2.1 face downwards and completely sealing the first feed inlet 1.1 of the sampling tube 1. This effectively prevents the coal powder sample from being blown away or spilled. After sealing, the operator can simply lift the circular rod 4.3 or the square rod 4.2 without needing to support the sampling tube horizontally.
[0030] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A coal powder sampler, characterized in that: The device includes a sampling tube (1), a sealing tube (2), an inner tube (3), a driving assembly (4), and a locking assembly (5). The sealing tube (2) is rotatably sleeved inside the sampling tube (1). A first feed inlet (1.1) is provided on one side of the sampling tube (1). A square hole (1.2) is provided at the end of the sampling tube (1) away from the first feed inlet (1.1). A second feed inlet (2.1) is provided on one side of the sealing tube (2). The end of the sealing tube (2) away from the second feed inlet (2.1) is fixed. There is an inner tube (3), which is rotatably sleeved inside the sampling tube (1) and located on the side near the square hole (1.2). A driving component (4) is slidably provided inside the inner tube (3). The driving component (4) controls the sealing tube (2) to rotate relative to the sampling tube (1) by sliding, so as to open or close the first feed port (1.1) of the sampling tube (1). A locking component (5) for locking the driving component (4) is provided at one end of the sampling tube (1) near the square hole (1.2).
2. The pulverized coal sampler according to claim 1, characterized in that: The inner surface of the inner tube (3) is provided with a spiral guide groove (3.1). The driving assembly (4) includes a circular slider (4.1), a square rod (4.2), a round rod (4.3), and a hemisphere (4.4). The middle part of the circular slider (4.1) and one end of the square rod (4.2) are fixed. The other end of the square rod (4.2) slides through a square hole (1.2). The other end of the square rod (4.2) is fixed to the middle part of the round rod (4.3). The circular slider (4.1) slides inside the inner tube (3). The hemisphere (4.4) is fixed on the peripheral surface of the circular slider (4.1). The hemisphere (4.4) is movably placed in the spiral guide groove (3.1).
3. A pulverized coal sampler according to claim 2, characterized in that: The square rod (4.2) has a through hole (4.21). The locking assembly (5) includes two symmetrically arranged spring plates (5.1). One end of the spring plate (5.1) is fixed to one end of the sampling tube (1) and located outside the square hole (1.2). The middle part of the spring plate (5.1) has a hemispherical protrusion (5.2). The protrusion (5.2) can be engaged in the through hole (4.21) of the square rod (4.2).
4. A pulverized coal sampler according to claim 1, characterized in that: The lengths of the first feed port (1.1) and the second feed port (2.1) are equal.