CN107991143B - Pulverized coal particle detection sampling device and method - Google Patents
Pulverized coal particle detection sampling device and method Download PDFInfo
- Publication number
- CN107991143B CN107991143B CN201711313528.4A CN201711313528A CN107991143B CN 107991143 B CN107991143 B CN 107991143B CN 201711313528 A CN201711313528 A CN 201711313528A CN 107991143 B CN107991143 B CN 107991143B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/20—Devices for withdrawing samples in the liquid or fluent state for flowing or falling materials
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N2001/1031—Sampling from special places
Abstract
The invention discloses a pulverized coal particle detection sampling device, and discloses a device for adjusting the flow of a plastic hose and detecting and sampling pulverized coal particles by adjusting the contraction of an elastic rod and driving a plurality of extrusion rods to contract in a matched manner in the pulverized coal conveying process. The dust sampling device can avoid uneven sampling dust and can avoid the influence on the air pressure in the conveying pipe during sampling. Its characterized in that solid fixed ring is connected through a plurality of elastic stems and support ring, gu fixed ring is coaxial with the support ring, distance between two adjacent elastic stems equals, the elastic stem is quarter circle helix type, the elastic stem is the pipe spring, gu the distance between fixed ring and the support ring equals the quarter pitch of elastic stem, on the support ring was arranged respectively to a plurality of extrusion stem one end, and along support ring circumference distribution, the extrusion stem has elasticity, the extrusion stem slant is placed, form the passageway between a plurality of extrusion stems, plastic hose arranges in the passageway between a plurality of extrusion stems.
Description
Technical Field
The invention discloses a pulverized coal particle detection and sampling device, relates to a device for detecting and sampling particles obtained by crushing coal blocks when coal is used, and belongs to the field of coal mine equipment. In particular to a device for adjusting the flow and detecting and sampling pulverized coal particles of a plastic hose by adjusting the contraction of an elastic rod and simultaneously driving a plurality of extrusion rods to contract in a matching way in the pulverized coal conveying process.
Background
At present, for the application of coal, the route of clean energy is more and more taken, thermal power plants and a plurality of plants using coal are needed, when coal is used, in order to better utilize the efficiency of coal, coal blocks are needed to be ground and pulverized into powder, then the powder is transmitted through a pipeline, the fine processing or the heat supply of a direct transmission power plant is carried out, and the like, after the coal is pulverized, the granularity of the coal powder needs to be detected, the pulverized particle size directly influences the utilization rate of the pulverized coal in the subsequent operation, so that the pulverized coal needs to be sampled before the subsequent operation, the granularity of the pulverized coal is detected, when the coal is transported, the pulverized coal with enlarged particles is concentrated on the bottom layer, so that the uniform sampling is difficult to be carried out during the sampling, templates collected from the surface layer or the bottom layer are not representative, the existing sampling is carried out at the two ends of a transmission pipe or a cloth bag, and, the flowing and chaotic states of the pulverized coal in the pipeline are lowest at two ends, the pulverized coal at the inlet end is not completely mixed, the uniformity of the collected sample is poor, the air pressure flow rate at the outlet end is high, the collection efficiency is low, the time is long, in the transportation process, the pipeline is high in sealing, the internal ventilation is influenced when the sampling is carried out again, the sampling can not be carried out along the middle position of the pulverized coal transmission direction, and the sampling port can not be adjusted, so that the pulverized coal is leaked and overflowed;
the publication number CN106442008A discloses a push-pull portable coal powder constant-speed sampling device, wherein a sampling gun is internally provided with an electric heat tracing heating wire and a thermocouple sensor A, a push-pull portable instrument box is internally provided with a differential pressure gauge, a vacuum pump, a cloth bag, an aluminum alloy heating plate, a thermocouple sensor B and a circuit control system, the sampling gun is connected with the two parallel cloth bags through a pipeline, the cloth bag is connected with the aluminum alloy heating plate, the aluminum alloy heating plate is provided with the thermocouple sensor B, and the circuit control system is respectively connected with the electric heat tracing heating wire, the thermocouple sensor A, the aluminum alloy heating plate and the thermocouple sensor B and is used for realizing constant-speed sampling of coal powder and obtaining test data of coal powder; the circuit control system is provided with a timer and a temperature controller and is used for regulating and controlling the temperature in the sampling gun and the portable instrument box and calculating the sampling time.
Disclosure of Invention
In order to improve the situation, the invention provides a pulverized coal particle detection and sampling device which is used for adjusting the flow of a plastic hose and detecting and sampling pulverized coal particles by adjusting the contraction of an elastic rod and driving a plurality of extrusion rods to contract in a matched manner in the pulverized coal conveying process. The dust sampling device can avoid uneven sampling dust and can avoid the influence on the air pressure in the conveying pipe during sampling.
The invention relates to a coal dust particle detection sampling device, which is realized as follows: the invention relates to a pulverized coal particle detection and sampling device which comprises a main pipe body, an arc-shaped groove, an arc-shaped boss, a conical connecting pipe, a plastic hose, a limiting ring, a supporting rod, a fixing ring, extrusion rods, a supporting ring, supporting lugs, elastic rods, a screw rod, a clamping ring and a connecting hole, wherein the fixing ring is connected with the supporting ring through a plurality of elastic rods, the fixing ring and the supporting ring are coaxial, the distance between two adjacent elastic rods is equal, the elastic rods are in a quarter-turn spiral line type, the elastic rods are tube springs, the distance between the fixing ring and the supporting ring is equal to a quarter-pitch of the elastic rods, one ends of a plurality of extrusion rods are respectively arranged on the supporting ring and are distributed along the circumferential direction of the supporting ring, the extrusion rods have elasticity and are obliquely arranged, a channel is formed among the extrusion rods, the plastic hose is arranged in, conical connection pipe one end is arranged in on the plastic hose one end, and is linked together with the plastic hose, is responsible for body one end and arranges conical connection pipe other end in on, and is linked together with conical connection pipe, and the snap ring cover is arranged in and is responsible for the body, equidistant opening has a plurality of connecting holes on the snap ring, and solid fixed ring is arranged respectively in to a plurality of bracing piece one end, and other end one-to-ones passes a plurality of connecting holes on the snap ring, and the bracing piece other end is arranged in to the spacing ring on, on two arc boss symmetries were arranged in the snap ring, it has the arc wall to open on the arc boss, and two support ear symmetries are arranged in on the support ring, and with two arc boss one-to-ones, screw rod one end is arranged.
The invention also relates to a pulverized coal sampling method using the pulverized coal particle detection sampling device, which is characterized in that when in use, the main body pipe is connected into the pulverized coal conveying pipe through an inclined tee joint, so that the main body pipe is positioned at a conveying downstream position, the main body pipe and the conveying pipe are positioned on the same horizontal plane, then nuts on two screw rods are screwed, so that the elastic rods are pressed, the elastic rods deflect while being pressed, a plurality of elastic rods deflect simultaneously, so that the support ring deflects to drive the screw rods to slide to one end of an arc-shaped groove, the deflection of the support ring causes the inner ring and the fixing ring to deflect relatively, the deflection angle of the extrusion rods is increased, the radial distance between the two ends of the extrusion rods is gradually increased and is more and more close to the radius of the fixing ring, meanwhile, the axial distance is shortened, the plurality of extrusion rods deflect simultaneously to cause the channel between the extrusion rods, when coal dust collection is needed, nuts on the screw rods are loosened, elasticity on the elastic rods is released, the support rings are pushed to be far away from the fixing rings, the support rings are driven to rotate reversely, the support rings drive the screw rods to rotate to the other end of the arc-shaped groove, rotation of the support rings drives the extrusion rods to deflect, radial distances of two ends of the extrusion rods are reduced, the extrusion rods deflect outwards at the same time, a middle channel is expanded, clamping of the plastic hoses is gradually loosened, the plastic hoses are communicated to discharge the coal dust into the sample cylinder, the main body pipe and the conveying pipe are located on the same plane, air flow in the conveying pipe forms branches along the inclined tee, the coal dust with each layer height is divided into the main body pipe, the coal dust is discharged from the conical connecting pipe and the plastic hoses;
the fixing ring and the support ring are coaxial, so that a channel formed by matching the extrusion rods is positioned on the axial lines of the fixing ring and the support ring, and when the extrusion rods are matched and clamped, the middle part of the plastic hose is extruded, so that extrusion deviation is avoided, and the influence on pulverized coal conveying caused by airflow overflow is avoided;
the distance between two adjacent elastic rods is equal, so that a plurality of elastic rods can form stable support and force transmission between the fixing ring and the support ring, and the fixing ring is deflected in a balanced manner by matching with compression and torsion of the elastic rods, so that the extrusion rods of the inner ring can be synchronously furled;
the elastic rod is of a quarter-turn spiral line type, and can deflect in the process of extruding the elastic rod when the nut rotates along the screw rod, so that the support ring deflects;
the extrusion rod has elasticity, and can be prevented from being broken from a connecting position due to direct deflection through deflection reservation when the support ring and the fixing ring deflect relatively;
the extrusion rods are obliquely arranged, so that a plurality of extrusion rods can be matched to form a channel, the middle of the channel is narrow, two ends of the channel are large, and the channel can be contracted and gathered at the middle position to close the plastic hose;
a plurality of connecting holes are formed in the clamping ring at equal intervals, a stable supporting structure can be formed correspondingly to the supporting rod, the fixing ring is fixed, and the phenomenon that the closing of the extrusion rod is influenced due to the fact that the fixing ring rotates along with the rotation of the fixing ring when the fixing ring deflects is avoided;
the arc-shaped boss is provided with an arc-shaped groove, so that the deflection of the support ring can be guided and limited, and the damage caused by the large extrusion of the plastic hose by the extrusion rod is avoided;
the aim of detecting and sampling the pulverized coal particles when the pulverized coal is conveyed is fulfilled.
Has the beneficial effects.
The structure is simple, and the device is convenient and practical.
Secondly, the coal powder in the conveying pipe can be sampled.
Thirdly, the non-uniformity of the sampled dust can be avoided.
And fourthly, the influence on the air pressure in the conveying pipe during sampling can be avoided.
Drawings
Fig. 1 is a three-dimensional exploded view of a pulverized coal particle detection sampling device according to the present invention.
In the attached drawings
Wherein the parts are: the main pipe body (1), the arc wall (2), arc boss (3), cone-shaped connecting pipe (4), plastic hose (5), spacing ring (6), bracing piece (7), solid fixed ring (8), extrusion stem (9), support ring (10), support ear (11), elastic rod (12), screw rod (13), snap ring (14), connecting hole (15).
The specific implementation mode is as follows:
the invention relates to a pulverized coal particle detection sampling device which is realized by a main pipe body (1), an arc-shaped groove (2), an arc-shaped boss (3), a conical connecting pipe (4), a plastic hose (5), a limiting ring (6), a supporting rod (7), a fixing ring (8), an extrusion rod (9), a supporting ring (10), a supporting lug (11), an elastic rod (12), a screw rod (13), a clamping ring (14) and a connecting hole (15), wherein the fixing ring (8) is connected with the supporting ring (10) through a plurality of elastic rods (12), the fixing ring (8) and the supporting ring (10) are coaxial, the distance between two adjacent elastic rods (12) is equal, the elastic rods (12) are in a quarter-circle spiral line shape, the elastic rods (12) are pipe springs, the distance between the fixing ring (8) and the supporting ring (10) is equal to the quarter-pitch of the elastic rods (12), one ends of a plurality of extrusion rods (9) are respectively arranged on a support ring (10) and are distributed along the circumferential direction of the support ring (10), the extrusion rods (9) have elasticity, the extrusion rods (9) are obliquely arranged, a channel is formed among the extrusion rods (9), a plastic hose (5) is arranged in the channel among the extrusion rods (9), one end of a conical connecting pipe (4) is arranged on one end of the plastic hose (5) and is communicated with the plastic hose (5), one end of a main pipe body (1) is arranged on the other end of the conical connecting pipe (4) and is communicated with the conical connecting pipe (4), a clamping ring (14) is sleeved on the main pipe body (1), a plurality of connecting holes (15) are equidistantly formed in the clamping ring (14), one ends of a plurality of support rods (7) are respectively arranged on a fixing ring (8), the other ends of the support rods correspondingly penetrate through the connecting holes (15) in the clamping ring (14), on bracing piece (7) other end was arranged in to spacing ring (6), snap ring (14) were arranged in to two arc boss (3) symmetries, it has arc wall (2) to open on arc boss (3), and support ring (10) is arranged in to two support ear (11) symmetries, and with two arc boss (3) one-to-one, on support ear (11) was arranged in to screw rod (13) one end, the other end passed arc wall (2) on corresponding arc boss (3), the nut has been put on screw rod (13) other end.
The invention also relates to a pulverized coal sampling method by utilizing the pulverized coal particle detection sampling device, which is characterized in that when in use, a main pipe is connected into a pulverized coal conveying pipe through an inclined tee joint, so that the main pipe is positioned at a conveying downstream position and is positioned on the same horizontal plane with the conveying pipe, then nuts on two screw rods (13) are screwed, so that an elastic rod (12) is pressed, the elastic rod (12) deflects while being pressed, a plurality of elastic rods (12) deflect simultaneously, a support ring (10) deflects to drive the screw rods (13) to slide to one end of an arc-shaped groove (2), the deflection of the support ring (10) causes relative deflection of an inner ring and a fixing ring (8), so that the deflection angle of an extrusion rod (9) is increased, the radial distance between two ends of the extrusion rod (9) is gradually increased and is closer to the radius of the fixing ring (8), meanwhile, the axial distance is shortened, and the plurality of extrusion rods (9) deflect simultaneously to narrow a channel between the extrusion rods, and extrude the plastic hose (5), make the plastic hose (5) closed, when needing to carry on the coal dust and gather, loosen the nut on the screw bolt (13), make the elasticity on the elastic rod (12) release, promote the support ring (10) to keep away from the solid fixed ring (8), drive the support ring (10) to carry on the reverse rotation at the same time, the support ring (10) drives the screw bolt (13) to rotate to the other end of the arc chute (2), the rotation of the support ring (10) drives the extrusion pole (9) to deflect, make the radial distance of the both ends of the extrusion pole (9) reduce, a plurality of extrusion poles (9) deflect outwards at the same time, the middle channel expands, the centre gripping to the plastic hose (5) is loosened gradually, the plastic hose (5) communicates and discharges the coal dust to the sample cylinder, the main body pipe and conveyer pipe are located the coplanar, the air current in the conveyer pipe forms the branch along the oblique tee bend, the coal dust of each layer height, discharging from the conical connecting pipe (4) and the plastic hose (5), and finishing sampling;
the fixing ring (8) and the supporting ring (10) are coaxial, a channel formed by matching the extrusion rods (9) is positioned on the axis of the fixing ring (8) and the axis of the supporting ring (10), and when the extrusion rods (9) are matched and clamped, the middle part of the plastic hose (5) is extruded, so that extrusion offset is avoided, airflow overflow is generated, and pulverized coal conveying is influenced;
the distance between two adjacent elastic rods (12) is equal, so that a plurality of elastic rods (12) can form stable support and force transmission between the fixing ring (8) and the support ring (10), and the fixing ring (8) is deflected in a balanced manner by matching with compression and torsion of the elastic rods (12), so that the extrusion rods (9) of the inner ring can be synchronously folded;
the elastic rod (12) is of a quarter-turn spiral line type, the elastic rod (12) can deflect to enable the supporting ring (10) to deflect in the process of extruding the elastic rod (12) when the nut rotates along the screw (13), the quarter-turn design can be matched with the distance between the fixing ring (8) and the supporting ring (10), and the relative deflection of the supporting ring (10) and the fixing ring (8) is enough to enable the extrusion rod (9) to form a closed state after the elastic rod (12) deflects and compresses;
the extrusion rod (9) has elasticity, and can be prevented from being directly deflected to fracture the extrusion rod (9) from a connection position through deflection reservation when the support ring (10) and the fixing ring (8) are relatively deflected;
the extrusion rods (9) are obliquely arranged, so that a plurality of extrusion rods (9) are matched to form a channel, the middle of the channel is narrow, the two ends of the channel are large, and the channel can be contracted and gathered at the middle position to close the plastic hose (5);
a plurality of connecting holes (15) are formed in the clamping ring (14) at equal intervals, a stable supporting structure can be formed correspondingly to the supporting rod (7), the fixing ring (8) is fixed, and the phenomenon that the closing of the extrusion rod (9) is influenced by the fact that the fixing ring (8) rotates along with the rotation of the extrusion rod when the extrusion rod deflects is avoided;
the arc-shaped boss (3) is provided with an arc-shaped groove (2) which can guide and limit deflection of the support ring (10) and avoid overlarge deflection, so that the extrusion of the extrusion rod (9) on the plastic hose (5) is enlarged to cause damage;
the aim of detecting and sampling the pulverized coal particles when the pulverized coal is conveyed is fulfilled.
Claims (7)
1. The utility model provides a buggy granule detects sampling device which characterized by: the fixing ring is connected with the support ring through a plurality of elastic rods, the fixing ring is coaxial with the support ring, the distance between the fixing ring and the support ring is equal to the quarter pitch of the elastic rods, one ends of a plurality of extrusion rods are respectively arranged on the support ring and are distributed along the circumferential direction of the support ring, channels are formed among the extrusion rods, the extrusion rods are obliquely arranged, the fixing ring and the support ring are coaxial, the channels formed by matching the extrusion rods are positioned on the axes of the fixing ring and the support ring, when the extrusion rods are matched and clamped, the middle part of the plastic hose is extruded, the plastic hose is arranged in the channels among the extrusion rods, one end of the conical connecting pipe is arranged on one end of the plastic hose and is communicated with the plastic hose, one end of the main pipe is arranged on the other end of the conical connecting pipe and is communicated with the conical connecting pipe, the clamping ring is sleeved on, on solid fixed ring was arranged respectively in to a plurality of bracing piece one end, a plurality of connecting holes on the snap ring were passed to the other end one-to-one, the bracing piece other end was arranged in to the spacing ring, on the snap ring was arranged in to two arc boss symmetries, two support ear symmetries were arranged in on the support ring, and with two arc boss one-to-one, on the support ear was arranged in to screw rod one end, the other end passed the arc wall on the corresponding arc boss, the nut had been put on the screw rod other.
2. The pulverized coal particle detecting and sampling device as claimed in claim 1, wherein the distance between two adjacent elastic rods is equal.
3. The pulverized coal particle detecting and sampling device as claimed in claim 1, wherein said elastic rod is a quarter-turn spiral.
4. The pulverized coal particle detecting and sampling device as claimed in claim 3, wherein said elastic rod is a tube spring.
5. The pulverized coal particle detecting and sampling device as claimed in claim 1, wherein said extrusion rod has elasticity.
6. The pulverized coal particle detecting and sampling device as claimed in claim 1, wherein the arc-shaped boss is provided with an arc-shaped slot.
7. A coal powder sampling method using coal powder particle detection sampling device is characterized in that when in use, a main pipe is connected into a coal powder conveying pipe through an inclined tee joint, the main pipe is located at a conveying downstream position, the main pipe and the conveying pipe are located on the same horizontal plane, nuts on two screw rods are screwed, elastic rods are pressed, the elastic rods deflect while being pressed, a plurality of elastic rods deflect simultaneously, a support ring deflects to drive the screw rods to slide to one end of an arc-shaped groove, the deflection of the support ring enables an inner ring and a fixing ring to deflect relatively, so that the deflection angle of an extrusion rod is increased, the radial distance between two ends of the extrusion rod is gradually increased and is closer to the radius of the fixing ring, meanwhile, the axial distance is shortened, the extrusion rods deflect simultaneously to narrow a channel between the extrusion rods, and extrude a plastic hose, so that the plastic hose is closed, when coal powder collection is needed, loosen the nut on the screw rod, make the elasticity release on the elastic rod, promote the support ring and keep away from solid fixed ring, it carries out the antiport to drive the support ring simultaneously, the support ring drives the screw rod and rotates to the arc wall other end, the rotation of support ring drives the squeeze bar deflection, make the radial distance at squeeze bar both ends reduce, a plurality of squeeze bars outwards deflect simultaneously, middle passageway expansion, progressively loosen the centre gripping of plastic hose, the plastic hose intercommunication discharges the buggy to the sample section of thick bamboo in, main part pipe and conveyer pipe are located the coplanar, the air current in the conveyer pipe forms the branch along oblique tee bend, all shunt the buggy with each layer height and get into the main part pipe, discharge from taper joint pipe and plastic hose, the sample is accomplished.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711313528.4A CN107991143B (en) | 2017-12-09 | 2017-12-09 | Pulverized coal particle detection sampling device and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711313528.4A CN107991143B (en) | 2017-12-09 | 2017-12-09 | Pulverized coal particle detection sampling device and method |
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| CN107991143A CN107991143A (en) | 2018-05-04 |
| CN107991143B true CN107991143B (en) | 2020-08-04 |
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| CN201711313528.4A Active CN107991143B (en) | 2017-12-09 | 2017-12-09 | Pulverized coal particle detection sampling device and method |
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| CN112394011A (en) * | 2020-10-26 | 2021-02-23 | 广西投资集团北海发电有限公司 | Coal mill coal powder fineness monitoring device and automatic adjusting method |
| CN113217042B (en) * | 2021-05-25 | 2023-12-26 | 洛阳腾飞建设工程集团有限公司 | Middle-buried steel edge rubber water stop belt mounting device |
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