Pulverized coal sampling device
By designing a disc-shaped sampling device and a closed-loop circulation system, the problem of clogging in the pulverized coal sampling device was solved, realizing an efficient and convenient pulverized coal sampling process and ensuring the accuracy of the sampling results and the unobstructed flow of the channel.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-15
- Publication Date
- 2026-03-24
AI Technical Summary
Existing coal powder sampling devices are prone to clogging of the sampling port when they are located in the coal powder channel for a long time, which affects the sampling work and is not easy to clean.
Design a device that includes a disc-shaped sampling device, which uses a servo motor to drive the disc to rotate, transferring the coal powder in the sampling tank to the discharge port. Combined with a cyclone separator and a circulating air duct, it forms a closed loop to avoid clogging of the sampling port and protect the inner wall of the sampling tank.
This reduces the frequency of cleaning blocked sampling ports, ensures the smooth flow of pulverized coal channels, improves sampling efficiency and result accuracy, and avoids the impact of pulverized coal leakage and residue.
Smart Images
Figure CN224035014U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of coal powder sampling, particularly relates to a coal powder sampling device. BACKGROUND
[0002] Coal powder sampling is an important operation in the industries of coal-fired power plants, cement manufacturing, etc., which is directly related to the combustion efficiency, pollutant emission and production cost.
[0003] During the sampling process, the sampler is fixed on the coal powder pipeline to ensure that the sampling port is aligned with the coal powder flow direction, and sampling is performed according to the specified sampling time or coal powder amount. The collected coal powder sample is collected into a container and sealed as soon as possible to prevent the sample from being damp or contaminated. It is generally recommended that the sampling amount should not be less than 500 grams each time to ensure the accuracy of the analysis results. The common coal powder sampling gun is tubular, which is easy to cause blockage of the sampling port when located in the coal powder passage for a long time, affecting the sampling work of the coal powder. Regular maintenance and cleaning or the use of gas backflushing are required to clean the coal powder blocking the sampling port, which is inconvenient to use. SUMMARY
[0004] The utility model discloses a coal powder sampling device, solve the prior art in the coal powder sampling, sampling gun long time is located in the coal powder passage content easy to cause the blockage of sampling port, affect the sampling work of the coal powder and so on problem.
[0005] In order to realize the above-mentioned purpose, the utility model adopts the technical scheme that:
[0006] A coal powder sampling device, comprising a sampling device, the sampling device is fixedly installed on the coal powder passage, the sampling device is discoid, the sampling device comprises a spherical shell, a disc, a servo motor, a rotating shaft, a sampling bottle, the spherical shell is horizontally installed on the vertical coal powder passage, and the left part of the spherical shell is located in the coal powder passage, the disc is coaxial in the spherical shell, the center bottom of the spherical shell is fixedly installed with the servo motor, the servo motor is located outside the coal powder passage, the output end of the servo motor is fixed with the rotating shaft, the disc rotates along the spherical shell through the rotating shaft, the bottom of one side of the spherical shell located outside the coal powder passage is installed with the sampling bottle, the spherical shell comprises a sampling port and a discharge port, and both are opened on the bottom of the spherical shell, the sampling port and the discharge port are located on the same meridian, and are symmetrically positioned with the center of the circle as the midpoint, the sampling port is located in the coal powder passage, and the discharge port is located outside the coal powder passage, the sampling bottle is screwedly installed with the bottom of the discharge port, the disc comprises a center hole and a sampling groove, the center hole is located at the axis of the disc and is fixed with the rotating shaft, the sampling groove penetrates the disc, and the distance from the sampling groove to the center of the disc is equal to the distance from the sampling port and the discharge port to the center of the spherical shell.
[0007] Preferably, rubber rings are fixed on the sampling groove, and the rubber rings are attached to the inner wall of the spherical shell.
[0008] Preferably, the circular shell is located in the part of the coal powder channel, and the channel cutout A is vertically and longitudinally arranged on the disc, and the section of the channel cutout A is coincided with the inner wall of the coal powder channel.
[0009] Preferably, the sampling groove is fixed with a ventilation net at the top, and the channel cutout B is vertically and longitudinally arranged on the disc on the other side of the center hole, and the section of the channel cutout B is also coincided with the inner wall of the coal powder channel.
[0010] Preferably, the top surface of the circular shell is provided with a top opening corresponding to the discharging opening.
[0011] Preferably, the bottom of the discharging opening is connected with a connecting pipe with the inlet of the cyclone separator, the air outlet at the top of the cyclone separator is connected with a circulating air pipe, the other end of the circulating air pipe is connected with the air inlet of the fan, the air outlet of the fan is connected with the top opening, and the sampling bottle is arranged at the bottom of the cyclone separator.
[0012] The utility model discloses a sampling device for coal powder, which comprises a sampling device body, a sampling groove, a servo motor, a disc, a circular shell, a sampling bottle, a cyclone separator, a circulating air pipe and a fan.
[0013] 1) the disc rotates to transfer the coal powder sampled by the sampling groove from the coal powder channel to the discharging opening, and the sampling bottle is used for collecting the coal powder, when sampling is not performed, the sampling opening is sealed by the disc, the sampling groove is protected in the circular shell, the sampling groove is not blocked by the flowing coal powder in the coal powder channel, the cleaning frequency is reduced, and the sampling device is more convenient to use.
[0014] 2) when sampling is not performed, the sections of the channel cutout A and the channel cutout B of the circular shell and the disc are coincided with the inner wall of the coal powder channel, the coal powder passing through the coal powder channel is not blocked, the sampling device is prevented from being damaged, and the smoothness of the coal powder in the coal powder channel is ensured.
[0015] 3) the sampling device is matched with the cyclone separator to better screen the coal powder, and the sampling device is matched with the circulating air pipe and the fan to form a closed circulation, the coal powder is prevented from leaking, the coal powder adhered to the inner wall of the sampling groove and the connecting pipe is cleaned by blowing, and the residual coal powder is prevented from affecting the detection result. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 is the appearance structure schematic diagram of the utility model embodiment 1;
[0017] Figure 2 is the longitudinal section view of the utility model embodiment 1;
[0018] Figure 3 is the longitudinal section view of the sampling device in the utility model embodiment 1;
[0019] Figure 4 is the structure schematic diagram of the circular shell in the utility model embodiment 1;
[0020] Figure 5 is the structure schematic view of the disc in the embodiment 1 of the utility model;
[0021] Figure 6 is the structure schematic view of the passage cutout A on the round shell in the embodiment 2 of the utility model;
[0022] Figure 7 is the structure schematic view of the passage cutout B on the disc in the embodiment 2 of the utility model;
[0023] Figure 8 is the longitudinal schematic view of the embodiment 3 of the utility model;
[0024] Figure 9 is the position schematic view of the top opening on the round shell in the embodiment 3 of the utility model;
[0025] Icon: 1, pulverized coal passage;2, sampling device;21, round shell;211, sampling port;212, blanking port;213, passage cutout A;214, top opening;22, disc;221, center hole;222, sampling groove;223, rubber ring;224, air vent net;225, passage cutout B;23, servo motor;231, rotating shaft;24, sampling bottle;25, connecting pipe;26, cyclone separator;27, circulating air pipe;28, fan. DETAILED DESCRIPTION
[0026] In order to make the purpose, method scheme and advantages of the embodiment of the utility model more clear, the method scheme in the embodiment of the utility model is clearly and completely described, obviously, the described embodiment is a part of the embodiment of the utility model, rather than all the embodiments. The components of the embodiment of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.
[0027] Embodiment 1
[0028] As Figures 1-5As shown, a kind of pulverized coal sampling device, including sampling device 2, the sampling device 2 is fixedly installed on pulverized coal channel 1, the coal flow direction in the pulverized coal channel 1 is set from below to above, the sampling device 2 is disc-shaped, and the sampling device 2 includes round shell 21, disc 22, servo motor 23, rotating shaft 231, sampling bottle 24, the round shell 21 is horizontally installed on vertical pulverized coal channel 1, and the left part of round shell 21 is located in the pulverized coal channel 1, the disc 22 is coaxially located in the inside of round shell 21, the servo motor 23 is fixedly installed at the center bottom of round shell 21, the servo motor 23 is located outside the pulverized coal channel 1, the rotating shaft 231 is fixed on the output end of servo motor 23, the disc 22 rotates along the inside of round shell 21 by rotating shaft 231, the sampling bottle 24 is installed at the bottom of the side of round shell 21 located outside the pulverized coal channel 1, for collecting and storing the coal after sampling, and the sampling amount is not less than 500 grams, the round shell 21 includes sampling port 211 and discharge port 212, and both are opened at the bottom of round shell 21, the position of sampling port 211 corresponds to the coal flow direction, the sampling port 211 and the discharge port 212 are located on the same meridian, and are symmetrically located with the center as the midpoint, the sampling port 211 is located in the pulverized coal channel 1, and the discharge port 212 is located outside the pulverized coal channel 1, the sampling bottle 24 is threadedly installed at the bottom of discharge port 212, the disc 22 includes center hole 221 and sampling groove 222, the center hole 221 is located at the axis of disc 22, and is fixed with rotating shaft 231, so that the disc 22 is driven by servo motor 23, the sampling groove 222 penetrates the disc 22, for retaining the sampled coal in the sampling groove 222 by the coal flow direction, and the distance from sampling groove 222 to the center of disc 22 is equal to the distance from sampling port 211 and discharge port 212 to the center of round shell 21, so that sampling groove 222 can coincide with sampling port 211 or discharge port 212 every 180 ° rotation driven by disc 22, to facilitate the coal collected by sampling port 211 to be transferred to discharge port 212.
[0029] Rubber ring 223 is fixed on the upper and lower sampling groove 222, and the rubber ring 223 is attached to the inner wall of round shell 21, so that the top and bottom of sampling groove 222 are sealed with round shell 21 by rubber ring 223, to avoid the coal collected by sampling groove 222 from leaking in round shell 21 when rotating in round shell 21.
[0030] In the implementation process, when sampling the coal powder, the sampling groove 222 coincides with the sampling port 211, at this time, the top of the sampling groove 222 is sealed by the top surface of the round shell 21, and the bottom enters the coal powder through the sampling port 211. After a certain period of time, the coal powder in the sampling groove 222 is collected, the rotation shaft 231 is driven to rotate by the servo motor 23, so that the coal powder in the sampling groove 222 is rotated by 180° by the disc 22. During the rotation process, the top and bottom of the sampling groove 222 are sealed by the rubber ring 223 and the round shell 21, the coal powder in the sampling groove 222 is rotated to the discharge port 212, and falls into the sampling bottle 24 by gravity, completing the collection. At this time, the sampling port 211 is sealed by the bottom surface of the disc, and the sampling groove 222 is protected in the round shell 21 and will not be blocked by the flowing coal powder in the coal powder channel 1, reducing the cleaning frequency.
[0031] Example 2
[0032] In order to prevent the round shell 21 and the disc 22 from blocking the flowing coal powder in the coal powder channel 1, and to protect the surface of the round shell 21 from being damaged by the flowing coal powder for a long time, the embodiment is improved on the basis of the embodiment 1, as shown in the figure. Figures 6-7 In this embodiment, the part of the round shell 21 located in the coal powder channel 1 is penetrated by a channel cutout A213 from top to bottom, and the cutting surface of the channel cutout A213 coincides with the inner wall of the coal powder channel 1, so that the round shell 21 will not block the upward flowing coal powder in the coal powder channel 1.
[0033] The top of the sampling groove 222 is fixed with a ventilation net 224, the ventilation holes in the ventilation net 224 are smaller than the diameter of the coal powder, only allowing air to pass through, so that the coal powder is accumulated in the sampling groove 222. The disc 22 on the other side of the center hole 221 is penetrated by a channel cutout B225 from top to bottom, and the cutting surface of the channel cutout B225 also coincides with the inner wall of the coal powder channel 1, so that the channel cutout B225 of the disc 22 will not block the upward flowing coal powder in the coal powder channel 1 after being rotated to coincide with the inner wall of the coal powder channel 1.
[0034] In the implementation process, when sampling the coal powder, the sampling groove 222 is located in the coal powder channel 1, the upward flowing coal powder is blocked by the ventilation net 224 and accumulated in the sampling groove 222. The coal powder in the sampling groove 222 is rotated to the discharge port 212 and falls into the sampling bottle 24 for collection by gravity. At this time, the channel cutout B225 coincides with the inner wall of the coal powder channel 1, and the channel cutout A213 of the round shell 21 also always coincides with the inner wall of the coal powder channel 1, which will not block the upward flowing coal powder, protecting the outer surface of the round shell 21 and the disc 22 from being damaged by the flowing coal powder.
[0035] Example 3
[0036] In order to make the sampled coal powder better be screened, also in order to be able to carry out the air blowing cleaning of the coal powder adhered to the inner wall of the sampling groove 222 to form a closed cycle, avoid the coal powder from leaking, also ensure that the coal powder in the sampling groove 222 has no residue, avoid affecting the next test result, on the basis of embodiment 2, like Figures 8-9 As shown in the figure, in the embodiment, the top surface of the round shell 21 is provided with a top opening 214 corresponding to the lower discharge port 212. The bottom of the lower discharge port 212 is connected with a connecting pipe 25 connected with the inlet of the cyclone separator 26, and the screening quality of the coal powder is ensured through the cyclone separator 26. The air outlet at the top of the cyclone separator 26 is connected with a circulating air pipe 27, one end of the circulating air pipe 27 is connected with the air inlet of the fan 28, the air outlet of the fan 28 is connected with the top opening 214, and the sampling bottle 24 is installed at the bottom of the cyclone separator 26. The air entering and exiting the cyclone separator 26 can form a cycle, and the air generated by the fan 28 can be used to blow and clean the inner wall of the sampling groove 222 at a close distance.
[0037] In the specific implementation process, when the sampled coal powder in the sampling groove 222 is located at the lower discharge port 212, the fan 28 is started, the coal powder in the sampling groove 222 is blown into the cyclone separator 26 through the connecting pipe 25, the coal powder forms vortex motion in the cyclone separator 26, the coal powder particles fall to the sampling bottle 24 at the bottom of the cyclone separator 26 through gravity and centrifugal force, and the air passes through the circulating air pipe 27 from the center of the cyclone separator 26 to form a closed cycle.
[0038] The above is only the preferred embodiment of the present application, and is not used to limit the present application. For those skilled in the art, the present application can have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A pulverized coal sampling device, comprising a sampling device (2), wherein the sampling device (2) is fixedly installed on a pulverized coal channel (1), characterized in that, The sampling device (2) is disc-shaped and includes a shell (21), a disc (22), a servo motor (23), a rotating shaft (231), and a sampling bottle (24). The shell (21) is horizontally mounted on a vertical coal powder channel (1), with the left side of the shell (21) located inside the coal powder channel (1). The disc (22) is coaxially located inside the shell (21). The servo motor (23) is fixedly mounted at the bottom center of the shell (21). The servo motor (23) is located outside the coal powder channel (1). The output end of the servo motor (23) is fixedly mounted on the rotating shaft (231). The disc (22) rotates along the inside of the shell (21) via the rotating shaft (231). The sampling bottle (24) is mounted on the bottom side of the shell (21) outside the coal powder channel (1). The circular shell (21) includes a sampling port (211) and a discharge port (212), both located at the bottom of the shell (21). The sampling port (211) and the discharge port (212) are located on the same meridian and are symmetrical about the center of the circle. The sampling port (211) is located inside the coal powder channel (1), and the discharge port (212) is located outside the coal powder channel (1). The sampling bottle (24) is threaded onto the bottom of the discharge port (212). The disk (22) includes a central hole (221) and a sampling groove (222). The central hole (221) is located at the center of the disk (22) and is fixed to the rotating shaft (231). The sampling groove (222) passes through the disk (22) and the distance to the center of the disk (22) is equal to the distance from the sampling port (211) and the discharge port (212) to the center of the shell (21).
2. The coal powder sampling device according to claim 1, characterized in that, The sampling groove (222) is fixed with rubber rings (223) at the top and bottom, and the rubber rings (223) are in contact with the inner wall of the round shell (21).
3. The coal powder sampling device according to claim 2, characterized in that, The portion of the circular shell (21) located inside the pulverized coal channel (1) has a channel cutout A (213) running through it from top to bottom. The cut surface of the channel cutout A (213) coincides with the inner wall of the pulverized coal channel (1).
4. A pulverized coal sampling device according to claim 3, characterized in that, The top of the sampling slot (222) is fixed with a ventilation net (224), and the disc (22) on the other side of the central hole (221) has a channel cutout B (225) running through it from top to bottom. The cut surface of the channel cutout B (225) also coincides with the inner wall of the coal powder channel (1).
5. A coal powder sampling device according to claim 4, characterized in that, The top surface of the cylindrical shell (21) has a top opening (214) that corresponds to the top opening (212) above and below.
6. A coal powder sampling device according to claim 5, characterized in that, The bottom of the discharge port (212) is connected to the inlet of the cyclone separator (26) via a connecting pipe (25). The air outlet at the top of the cyclone separator (26) is connected to a circulating air pipe (27). The other end of the circulating air pipe (27) is connected to the air inlet of the blower (28). The air outlet of the blower (28) is connected to the top port (214). The sampling bottle (24) is installed at the bottom of the cyclone separator (26).