CN219038520U - Tibetan arm type coal dust sampling device - Google Patents
Tibetan arm type coal dust sampling device Download PDFInfo
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- CN219038520U CN219038520U CN202320017112.2U CN202320017112U CN219038520U CN 219038520 U CN219038520 U CN 219038520U CN 202320017112 U CN202320017112 U CN 202320017112U CN 219038520 U CN219038520 U CN 219038520U
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Abstract
The utility model discloses a hidden arm type coal dust sampling device, which comprises: the device comprises a shell, a material guide pipe, a folding component and a sampling pipe, wherein the shell is connected to the outer wall of a pulverized coal conveying pipe, the starting end of the material guide pipe is sealed and connected with the output end of a first gear motor, the tail end of the material guide pipe is connected with the folding component, the port at the tail end of the material guide pipe is in a right-angle turning mode to form a turning port, and the turning port extends into the folding component; the tail end of the sampling tube is sealed, the initial end of the sampling tube is connected with the short tube in a right-angle shape, the short tube stretches into the folding assembly and is rotationally connected with the folding assembly, the upper port of the short tube is sealed, and the lower port of the short tube is communicated with the turning port of the material guiding tube. The sampling tube is used for sampling on the cross section of the pulverized coal conveying pipe, so that the parameters of the pulverized coal sample are widely represented; when the sampling tube is not sampled, the sampling tube can be gathered with the material guiding tube and hidden in the inner cavity of the shell, normal conveying of coal dust is not hindered, and meanwhile, the damage of the sampling tube caused by long-term friction of the coal dust is avoided.
Description
Technical Field
The utility model belongs to the technical field of sample extraction and detection, and particularly relates to a hidden arm type coal dust sampling device.
Background
The fineness of the pulverized coal is one of important indexes affecting the combustion economy of the boiler, so that the pulverized coal needs to be sampled and detected regularly, and when the fineness of the pulverized coal exceeds a set value, the grinding part of the coal mill needs to be adjusted and replaced or the opening degree of a baffle plate of a separator needs to be adjusted in time so as to realize that the fineness of the pulverized coal meets the set requirement.
The old-fashioned coal powder sampling is to arrange a coal powder sampling hole at the lower part of a coal powder bin, insert a hollow round tube with an upper opening into the sampling hole when sampling is needed, withdraw the hollow tube from the sampling hole after the coal powder falls into the hollow tube, and pour the coal powder into a sampling bag. The original coal dust sampling mode can only obtain coal dust at the lower part of the coal dust bin, the due wide representativeness of a sample cannot be reflected, the measured coal dust fineness cannot truly reflect the actual situation, and in the process of extracting the hollow tube from the coal dust sampling hole and pouring the coal dust into the sampling bag, the coal dust is leaked, so that serious dust pollution is caused, and the health of a sampling operator is greatly influenced.
The Chinese patent specification discloses a Tibetan arm type multi-point pulverized coal sampling device (publication number: CN 2859506), and specifically discloses the following: a sampling groove is longitudinally formed in the pipe wall of a vertical pipe section of a coal powder pipe at an outlet of a coal mill, a protection cavity of a sampling device is correspondingly welded, a sampling rod is provided with a cavity, a hollow rotating shaft is hinged in the protection cavity and is opposite to the sampling groove, a series of sampling holes are formed in the sampling rod, the cavity of the sampling rod is communicated with a cyclone separator through the hollow rotating shaft, the separator is propped against a Venturi three-way pipe, and the other two ends of the Venturi three-way pipe are respectively connected with a compressed air source and a coal powder pipe loop.
Disclosure of Invention
1. Technical problem to be solved
The utility model provides a hidden arm type coal dust sampling device, which aims to: the method solves the problem that the sample parameters of the pulverized coal sampling in the prior art are not widely represented.
2. Technical proposal
In order to achieve the above object, the present utility model adopts the following technical scheme, including:
the device comprises a shell connected to the outer wall of a pulverized coal conveying pipe, wherein the inner cavity of the shell is communicated with the pipe cavity of the pulverized coal conveying pipe through a strip-shaped window, the upper part of the inner cavity of the shell is connected with a first speed reducing motor, the device further comprises a material guiding pipe, a folding assembly and a sampling pipe, the starting end of the material guiding pipe is sealed and is in threaded connection with the output end of the first speed reducing motor, the tail end of the material guiding pipe is connected with the folding assembly, the port of the tail end of the material guiding pipe is in a right-angle turning mode to form a turning port, and the turning port extends into the folding assembly; the tail end of the sampling tube is sealed, the initial end of the sampling tube is connected with the short tube in a right-angle shape, the short tube stretches into the folding assembly and is rotationally connected with the folding assembly, the upper port of the short tube is sealed, and the lower port of the short tube is communicated with the turning port of the material guiding tube; the pipe wall of the sampling pipe is provided with a plurality of sampling holes which are uniformly distributed along the length direction, and the sampling Kong Ying is used for conveying the pulverized coal.
Further, the folding assembly comprises a box body and a second gear motor, a through hole is formed in the left side of the box body, and the inner circle of the through hole is in threaded connection with the outer circle of the material guide pipe; the upper wall of the box body is connected with a sleeve, the lower end of the short pipe penetrates through the sleeve and then is inserted into a port of the turning end of the material guiding pipe and is rotationally connected with the port, and the short pipe is sleeved with a conical driven gear; the second gear motor is connected with the inner side wall of the box body, the output shaft of the second gear motor is connected with a conical driving gear, and the driving gear is meshed with a driven gear.
Further, the excircle of guide pipe is connected with the support block, the magnetic control switch is connected to the upper portion of support block, the magnet is connected to the bottom of sampling tube excircle, the magnet cooperatees with magnetic control switch.
Further, a first sealing ring is arranged between the inner circle of the sleeve and the outer circle of the short tube.
Further, a second sealing ring is arranged between the outer circle of the lower port of the short pipe and the inner circle of the port of the turning end of the material guiding pipe.
Further, the first gear motor, the second gear motor and the magnetic control switch are all electrically connected with the PLC.
Further, a material guide opening is formed in the pipe wall at the initial end of the material guide pipe, a material outlet is formed in one side wall of the shell, and the material guide opening is communicated with the material outlet through a corrugated pipe.
Further, the outer end of the discharge port is connected with a suction pipe.
3. Advantageous effects
According to the hidden arm type coal dust sampling device, as the sampling tube is used for sampling on the cross section of the tube cavity of the coal dust conveying tube, the parameters of a coal dust sample are widely represented, and the accuracy of coal dust sampling is greatly improved; and the sampling tube can be gathered together with the material guiding tube when not sampling and is hidden in the inner cavity of the shell, so that normal conveying of coal dust is not hindered, and meanwhile, the damage of the sampling tube caused by long-term friction of the coal dust is avoided.
Drawings
FIG. 1 is a schematic diagram of a front view cross-section structure of the utility model (the material guiding pipe and the sampling pipe are hidden in the shell after being gathered).
Fig. 2 is a schematic diagram of a front view and cross section of the present utility model (the feed pipe swings out of the housing).
FIG. 3 is a schematic diagram of a front view cross-sectional structure of the present utility model (the sampling tube and the material guiding tube are in line).
Fig. 4 is a schematic top view of fig. 3.
Fig. 5 is a schematic view of the cross-sectional A-A structure of fig. 3.
Fig. 6 is a schematic view of the sectional B-B structure of fig. 3.
Detailed Description
The present utility model will be described in further detail below with reference to the accompanying drawings so as to facilitate a more clear understanding to those skilled in the art.
As shown in fig. 1, 2 and 3, the present utility model includes:
the device comprises a shell 2 connected to the outer wall of a pulverized coal conveying pipe 1, wherein the inner cavity of the shell is communicated with the pipe cavity of the pulverized coal conveying pipe through a strip-shaped window 3, the upper part of the inner cavity of the shell is connected with a first speed reduction motor 4, the device further comprises a guide pipe 5, a folding assembly 6 and a sampling pipe 7, the starting end of the guide pipe is sealed and is in threaded connection with the output end of the first speed reduction motor, the tail end of the guide pipe is connected with the folding assembly, a port at the tail end of the guide pipe is in a right-angle turning mode to form a turning port, and the turning port extends into the folding assembly; the tail end of the sampling tube is closed, the initial end of the sampling tube is connected with the short tube 9 in a right angle shape, the short tube stretches into the folding assembly and is rotationally connected with the folding assembly, the upper port of the short tube is closed, and the lower port of the short tube is communicated with the turning port of the material guiding tube; the pipe wall of the sampling pipe is provided with a plurality of sampling holes 8 which are uniformly distributed along the length direction, and the sampling Kong Ying is used for conveniently enabling the coal dust to enter the sampling pipe well in the conveying direction of the coal dust.
Further, as shown in fig. 5, the folding assembly 6 includes a box 61 and a second gear motor 62, where a through hole is formed on the left side of the box, and an inner circle of the through hole is in threaded connection with an outer circle of the material guiding pipe; the upper wall of the box body is connected with a sleeve 63, the lower end of the short pipe penetrates through the sleeve and then is inserted into a port of the turning end of the material guiding pipe and is rotationally connected with the port, and the short pipe is sleeved with a conical driven gear 64; the second gear motor is connected with the inner side wall of the box body, the output shaft of the second gear motor is connected with a conical driving gear 65, and the driving gear is meshed with the driven gear.
Further, as shown in fig. 3, 4 and 6, the outer circle of the material guiding pipe is connected with a supporting block 10, the upper part of the supporting block is connected with a magnetic control switch 11, the bottom of the outer circle of the sampling pipe is connected with a magnet 12, and the magnet is matched with the magnetic control switch. After the sampling tube swings for a circle under the drive of the second gear motor for sampling, at the moment, the magnet 12 at the bottom of the sampling tube is positioned at the upper part of the magnetic control switch 11, the magnetic control switch is triggered, the second gear motor stops rotating, and the sampling tube is automatically overlapped with the material guiding tube.
Further, as shown in fig. 5, a first sealing ring 66 is disposed between the inner circle of the sleeve and the outer circle of the short tube. So as to prevent coal dust from entering the box body of the folding component.
Further, as shown in fig. 5, a second sealing ring 67 is disposed between the outer circle of the lower end opening of the short tube and the inner circle of the turning end opening of the material guiding tube. So as to prevent the coal dust from leaking into the box body.
Further, the first gear motor, the second gear motor and the magnetic control switch are all electrically connected with the PLC, and the PLC can be used for realizing automatic control of coal dust sampling.
Further, as shown in fig. 1 and 2, a material guiding opening 13 is provided on the wall at the initial end of the material guiding pipe, a material outlet 14 is provided on one side wall of the casing, and the material guiding opening is communicated with the material outlet through a corrugated pipe 15.
Further, the outer end of the discharge port is connected with a suction pipe, and the pulverized coal sample is sucked out through the suction pipe.
The working process of the utility model comprises the following steps:
when sampling is performed, the first gear motor is started, and the material guide pipe is swung out of the shell (shown in figure 2); the second speed reducing motor is started to enable the sampling tube to slowly rotate on the section of the tube cavity of the pulverized coal conveying tube along the clockwise direction by taking the initial end as the center of a circle, pulverized coal enters the sampling tube through the sampling hole (shown in fig. 3 and 4), after the sampling tube rotates for a circle, when a magnet at the bottom of the sampling tube is positioned at the upper part of the magnetic control switch, the magnetic control switch is triggered, the second speed reducing motor stops rotating, and the sampling tube is automatically overlapped with the material guiding tube (shown in fig. 2); starting a first gear motor, and recycling the material guide pipe into the shell (shown in figure 1); the suction tube aspirates the pulverized coal sample.
In the utility model, the sampling tube rotates clockwise by taking the initial end as the center of a circle and samples on the section of the tube cavity of the pulverized coal conveying tube, and the sampling range covers the whole section of pulverized coal conveying, so that the sampled pulverized coal sample parameters have wide representativeness.
The hidden arm type coal dust sampling device effectively solves the problem that the sample parameters of coal dust sampling in the prior art are not wide in representativeness, and greatly improves the accuracy of coal dust sampling; and the sampling tube can be gathered together with the material guiding tube when not sampling and is hidden in the inner cavity of the shell, so that normal conveying of coal dust is not hindered, and meanwhile, the damage of the sampling tube caused by long-term friction of the coal dust is avoided.
Claims (8)
1. The utility model provides a hide arm-type buggy sampling device, its includes casing (2) of connecting on buggy conveyer pipe (1) outer wall, be linked together through bar window (3) between the lumen of casing's inner chamber and buggy conveyer pipe, first gear motor (4) are connected on the upper portion of casing inner chamber, its characterized in that: the automatic feeding device is characterized by further comprising a guide pipe (5), a folding assembly (6) and a sampling pipe (7), wherein the starting end of the guide pipe is closed and is in threaded connection with the output end of the first gear motor, the tail end of the guide pipe is connected with the folding assembly, the port at the tail end of the guide pipe is in a right-angle turning mode to form a turning port, and the turning port extends into the folding assembly; the tail end of the sampling tube is closed, the initial end of the sampling tube is connected with the short tube (9) in a right angle shape, the short tube stretches into the folding assembly and is rotationally connected with the folding assembly, the upper port of the short tube is closed, and the lower port of the short tube is communicated with the turning port of the material guiding tube; the tube wall of the sampling tube is provided with a plurality of sampling holes (8) which are uniformly distributed along the length direction, and the sampling Kong Ying is used for conveying the pulverized coal.
2. The Tibetan arm type coal powder sampling device according to claim 1, wherein: the folding assembly (6) comprises a box body (61) and a second gear motor (62), a through hole is formed in the left side of the box body, and the inner circle of the through hole is in threaded connection with the outer circle of the material guide pipe; the upper wall of the box body is connected with a sleeve (63), the lower end of the short pipe penetrates through the sleeve and then is inserted into a port of the turning end of the material guiding pipe and is rotationally connected with the port, and the short pipe is sleeved with a conical driven gear (64); the second gear motor is connected with the inner side wall of the box body, an output shaft of the second gear motor is connected with a conical driving gear (65), and the driving gear is meshed with the driven gear.
3. The Tibetan arm type coal powder sampling device according to claim 2, wherein: the excircle of the material guide pipe is connected with a support block (10), the upper part of the support block is connected with a magnetic control switch (11), the bottom of the excircle of the sampling pipe is connected with a magnet (12), and the magnet is matched with the magnetic control switch.
4. A Tibetan arm type coal dust sampling device according to claim 3, wherein: a first sealing ring (66) is arranged between the inner circle of the sleeve and the outer circle of the short pipe.
5. The Tibetan arm type coal dust sampling device according to claim 4, wherein: a second sealing ring (67) is arranged between the outer circle of the lower port of the short pipe and the inner circle of the port of the turning end of the material guiding pipe.
6. The Tibetan arm type coal powder sampling device according to claim 5, wherein: the first gear motor, the second gear motor and the magnetic control switch are all electrically connected with the PLC.
7. The Tibetan arm type coal powder sampling device according to claim 6, wherein: a material guide opening (13) is arranged on the pipe wall at the initial end of the material guide pipe, a material outlet (14) is arranged on one side wall of the shell, and the material guide opening is communicated with the material outlet through a corrugated pipe (15).
8. The Tibetan arm type coal dust sampling device of claim 7, wherein: the outer end of the discharge port is connected with a suction pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320017112.2U CN219038520U (en) | 2023-01-04 | 2023-01-04 | Tibetan arm type coal dust sampling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320017112.2U CN219038520U (en) | 2023-01-04 | 2023-01-04 | Tibetan arm type coal dust sampling device |
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| Publication Number | Publication Date |
|---|---|
| CN219038520U true CN219038520U (en) | 2023-05-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320017112.2U Active CN219038520U (en) | 2023-01-04 | 2023-01-04 | Tibetan arm type coal dust sampling device |
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| CN (1) | CN219038520U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116659953A (en) * | 2023-08-02 | 2023-08-29 | 连云港市泰格电力设备有限公司 | Closed pulverized coal sampling equipment |
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2023
- 2023-01-04 CN CN202320017112.2U patent/CN219038520U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116659953A (en) * | 2023-08-02 | 2023-08-29 | 连云港市泰格电力设备有限公司 | Closed pulverized coal sampling equipment |
| CN116659953B (en) * | 2023-08-02 | 2023-09-22 | 连云港市泰格电力设备有限公司 | Closed pulverized coal sampling equipment |
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