CN209945790U - Cement powder sampling device - Google Patents
Cement powder sampling device Download PDFInfo
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- CN209945790U CN209945790U CN201920406972.9U CN201920406972U CN209945790U CN 209945790 U CN209945790 U CN 209945790U CN 201920406972 U CN201920406972 U CN 201920406972U CN 209945790 U CN209945790 U CN 209945790U
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Abstract
The utility model discloses a cement powder sampling device, wherein a first sampling pipe in a spiral sampler is positioned in a conveying chute, the first sampling pipe is provided with a plurality of first sampling holes, a first end of the first sampling pipe is provided with a discharge hole, a spiral blade shaft is rotatably arranged in the first sampling pipe, the spiral blade shaft is connected with a motor output shaft, two ends of the conveying pipe are respectively communicated with the discharge hole and the inner part of the conveying chute, a second sampling pipe in the first small-hole sampler is positioned in the conveying pipe, the second sampling pipe is provided with a second sampling hole, a first high-pressure air supply mechanism is communicated with the first end of the second sampling pipe, the middle part of a first Venturi tube is communicated with the second end of the second sampling pipe, the sampling device in the utility model is provided with two samplers, cement powder is mixed under the stirring of the spiral blade shaft after entering the first sampling pipe, the uniform particle size distribution of the powder coming out from the discharge hole is ensured, good conditions are provided for sampling of the small-hole sampler, and finally the representativeness of the small-hole sampling is greatly improved.
Description
Technical Field
The utility model relates to a cement manufacture equipment technical field especially relates to a cement powder sampling device.
Background
The fineness control of a cement grinding system mainly comprises indexes such as specific surface area, screen residue and particle size distribution, wherein laser particle size distribution is one of detection methods generally adopted at home and abroad at present, the laser particle size detection is divided into off-line detection and on-line detection, the on-line detection is that in the grinding operation process, a cement sample is collected into an on-line particle size detector through a sampling device, the existing sampling device comprises a small hole sampler, the small hole sampler extends into a chute for transmitting cement, and the small hole of the small hole sampler is opposite to the cement material flow direction, so that the cement enters the small hole sampler through the small hole, but because the flow of the cement material flow in the chute has no any rule, the cement material flow is influenced by factors such as the change of system yield, periodic ash discharge of a dust collector and the like, the particle size change of powder in the small hole sampler is uneven.
SUMMERY OF THE UTILITY MODEL
For the technical problem who exists among the solution background art, the utility model provides a cement powder sampling device.
The utility model provides a cement powder sampling device, which comprises a conveying chute, a spiral sampler, a conveying pipe and a first small-hole sampler;
the spiral sampler comprises a first sampling pipe, a spiral blade shaft and a motor, wherein the first sampling pipe is positioned in the conveying chute, the first sampling pipe is provided with a plurality of first sampling holes along the length direction, the first end of the first sampling pipe extends to the outside of the conveying chute, the first end of the first sampling pipe is provided with a discharge hole, the spiral blade shaft is rotatably arranged in the first sampling pipe, and the spiral blade shaft is connected with an output shaft of the motor;
the first end of the material conveying pipe is communicated with the discharge hole, and the second end of the material conveying pipe is communicated with the interior of the material conveying chute;
the first small hole sampler comprises a second sampling tube, a first high-pressure gas supply mechanism and a first Venturi tube, the second sampling tube is located in the conveying pipeline, the second sampling tube is provided with a second sampling hole, a first end and a second end of the second sampling tube extend to the outside of the conveying pipeline respectively, the first high-pressure gas supply mechanism is communicated with the first end of the second sampling tube, and the middle part of the first Venturi tube is communicated with the second end of the second sampling tube.
Preferably, still include second aperture sampler, second aperture sampler includes third sampling tube, second high-pressure gas supply mechanism and second venturi, and the third sampling tube is arranged in the conveying pipeline, and the third sampling tube is equipped with the third sampling hole, and the first end of third sampling tube and second end extend to the conveying pipeline outside respectively, and second high-pressure gas supply mechanism and the first end intercommunication of third sampling tube, second venturi middle part and third sampling tube second end intercommunication.
Preferably, the pressure in the second sampling tube at the second sampling hole is P1, the pressure outside the second sampling tube at the second sampling hole is P2, P1> P2, the pressure in the third sampling tube at the third sampling hole is P3, the pressure outside the third sampling tube at the third sampling hole is P2, P3< P2.
Preferably, the first venturi tube and the second venturi tube are at different heights, and projections of the first venturi tube and the second venturi tube on a horizontal plane are spaced by a preset distance.
Preferably, a partition plate is arranged in the material conveying pipe and is positioned between the second sampling pipe and the third sampling pipe.
Preferably, the device further comprises a motor and a disc, wherein the motor is arranged on the top of the partition plate, and the disc is coaxially fixed on an output shaft of the motor.
Preferably, the top surface of the disk is recessed from the rim toward the center.
The utility model discloses in, the cement powder sampling device who proposes, including spiral sampler and aperture sampler, the cement powder in the defeated material chute of direct acquisition is stretched into to spiral sampler in the defeated material chute, and the cement powder that the collection obtained drives through helical blade and send to the discharge opening and fall down, gets into in the conveying pipeline, and the aperture sampler is located the conveying pipeline for collect the cement powder that the discharge opening falls down, convey to laser particle size detector by the aperture sampler again, it is visible the utility model provides a sampling device has set up two samplers, realizes mixing under the stirring of helical blade axle behind the cement powder entering first sampling tube, ensures that the powder size distribution who comes out through the discharge opening is even, provides good condition for the aperture sampler, finally makes the representativeness of aperture sample improve greatly.
Drawings
Fig. 1 is a schematic structural view of a cement powder sampling device provided by the present invention;
FIG. 2 is a schematic structural view of a feed delivery pipe and a small hole sampler in the cement powder sampling device according to the present invention;
fig. 3 is the schematic structural diagram of the conveying pipeline and the small hole sampler in the cement powder sampling device provided by the utility model.
Detailed Description
As shown in fig. 1-3, fig. 1 is the structure schematic diagram of a cement powder sampling device provided by the present invention, fig. 2 is the structure schematic diagram of a conveying pipe and a small hole sampler in a cement powder sampling device provided by the present invention, fig. 3 is the structure schematic diagram of a conveying pipe and a small hole sampler in a cement powder sampling device provided by the present invention.
Referring to fig. 1-3, the utility model provides a cement powder sampling device, which comprises a conveying chute 1, a spiral sampler, a conveying pipe 3 and a first small hole sampler;
the conveying chute 1 is used for conveying cement powder downwards;
the spiral sampler comprises a first sampling pipe 21, a spiral vane shaft 22 and a motor 23, wherein the first sampling pipe 21 is positioned in the conveying chute 1 and horizontally arranged, the first end of the first sampling pipe 21 extends to the outside of the conveying chute 1, namely the first sampling pipe 21 is also provided with a section positioned outside the conveying chute 1, the first sampling pipe 21 is positioned inside the conveying chute 1 and is respectively provided with four first sampling holes, the openings of the four first sampling holes are upward, cement powder in the conveying chute 1 can enter the first sampling pipe 21 through the four first sampling holes, the four first sampling holes are arranged to improve the sampling efficiency, the first end of the first sampling pipe 21 is provided with a discharge hole, the opening of the discharge hole is downward, the spiral vane shaft 22 is rotatably arranged in the first sampling pipe 21, the spiral vane shaft 22 can drive cement powder in the first sampling pipe 21 to be driven to the discharge hole when rotating, the spiral vane shaft 22 is connected with an output shaft of the motor 23, the motor 23 is used for driving the spiral blade shaft 22 to rotate;
a first end of a material conveying pipe 3 is communicated with the discharge hole, a second end of the material conveying pipe 3 is communicated with the interior of the material conveying chute 1, a channel in the material conveying pipe 3 is vertically arranged, and cement powder discharged from the discharge hole enters the material conveying pipe 3;
the first small hole sampler comprises a second sampling pipe 31, a first high-pressure gas supply mechanism 32 and a first Venturi tube 43, the second sampling pipe 31 is positioned in the conveying pipe 3 and is horizontally arranged, a first end and a second end of the second sampling pipe 31 are respectively positioned outside the conveying pipe 3, a second sampling hole is arranged at the part of the second sampling pipe 31 positioned in the conveying pipe 3, the opening of the second sampling hole is upward, cement powder flowing downwards in the conveying pipe 3 can enter the second sampling pipe 31 through the second sampling hole, the cement powder which does not enter the second sampling pipe 31 returns to the conveying chute 1 along the conveying pipe 3, the first high-pressure gas supply mechanism 32 is communicated with the first end of the second sampling pipe 31, the middle part of the first Venturi tube 43 is communicated with the second end of the second sampling pipe 31, the first high-pressure gas supply mechanism 32 supplies high-pressure gas to the second Venturi tube 31 to enable the cement powder in the second sampling pipe 31 to move to one side of a first venturi tube 33, the gas also flows in the first venturi tube 33, so that the cement powder in the second sampling tube 31 is adsorbed to the first venturi tube 33, and the cement powder enters the first venturi tube 33 and is blown to the laser particle size detector by the gas in the first venturi tube 33.
The cement powder sampling device that this embodiment provided, the cement powder in the defeated material chute 1 of direct acquisition is stretched into to spiral sampler, and the cement powder that the collection obtained drives through helical blade and delivers to the discharge opening and falls down, gets into in the conveying pipeline 3, and the aperture sampler is located conveying pipeline 3 for collect the cement powder that the discharge opening falls down, convey to laser particle size detector by the aperture sampler again, it is visible the utility model provides a sampling device has set up two samplers, and the cement powder gets into behind the first sampling tube 21 and realizes mixing under the stirring of helical blade axle 22, ensures that the powder particle size distribution who comes out through the discharge opening is even, provides good condition for the sampling of aperture sampler, finally makes the representativeness of aperture sample improve greatly.
The first small hole sampler and the second small hole sampler sample simultaneously, the flow rate of the feeding chute 1 in this embodiment is 200t/h, if the sampling quantity is small, the sampling quantity is not representative, and only the larger sampling quantity can reflect the real condition of the particle size of the cement powder, therefore, in this embodiment, in order to improve the sampling efficiency, the device further comprises the second small hole sampler, the second small hole sampler comprises a third sampling pipe 41, a second high-pressure gas supply mechanism 42 and a second venturi tube 43, the third sampling pipe 41 is located in the feeding pipe 3 and horizontally arranged, the first end and the second end of the third sampling pipe 41 are respectively located outside the feeding pipe 3, the part of the third sampling pipe 41 located in the feeding pipe 3 is provided with a third sampling hole, the opening of the third sampling hole is upward, the cement powder flowing downward in the feeding pipe 3 can enter the third sampling pipe 41 through the third sampling hole, the cement powder not entering the third sampling pipe 41 returns to the feeding chute 1 along the feeding pipe 3, the second high-pressure gas supply mechanism 42 is communicated with the first end of the third sampling tube 41, the middle part of the second venturi tube 43 is communicated with the second end of the third sampling tube 41, the second high-pressure gas supply mechanism 42 sends high-pressure gas to the third sampling tube 41 so that cement powder in the third sampling tube 41 moves to one side of the second venturi tube 43, gas flows in the second venturi tube 43 to adsorb the cement powder in the third sampling tube 41 to one side of the second venturi tube 43, and the cement powder is blown to the laser particle size detector by the gas in the second venturi tube 43 after entering the second venturi tube 43; the first small hole sampler and the second small hole sampler sample simultaneously, so that the amount of the collected cement powder in unit time is increased, and the sampling representativeness is improved.
In this embodiment, the pressure at the second sampling hole in the second sampling tube 31 is set to be P1 through the setting of the output air pressure of the first high-pressure air supply mechanism 32, the pressure at the second sampling hole outside the second sampling tube 31 is set to be P2, and P1 is greater than P2, so that the air in the second sampling tube 31 is discharged outwards through the second sampling hole, and the fine cement powder near the second sampling hole is blown away, and the coarse cement powder can still enter the second sampling tube 31 through the second sampling hole, so that the cement powder falling into the second sampling tube 31 is coarse as a whole;
through the setting of the output air pressure of the second high-pressure air supply mechanism 42, the pressure at the third sampling hole in the third sampling pipe 41 is P3, the pressure at the third sampling hole outside the third sampling pipe 41 is P2, and P3 is less than P2, so that the air outside the third sampling pipe 41 is input inwards through the third sampling hole, and the fine cement powder near the third sampling hole is sucked, so that the cement powder falling into the second sampling pipe 31 is fine as a whole.
Therefore, the cement powder collected by the first small-hole sampler is thick, and the cement powder collected by the second small-hole sampler is thin, so that thick and thin particles in the cement powder can enter the laser particle size analyzer, and the detection result is more real.
In this embodiment, the first venturi tube 33 and the second venturi tube 43 are at different heights, and the projections of the first venturi tube 33 and the second venturi tube 43 on the horizontal plane are spaced by a predetermined distance.
A partition plate 5 is arranged in the feeding pipe 3, and the partition plate 5 is positioned between the second sampling pipe 31 and the third sampling pipe 41, so that the second sampling pipe 31 and the third sampling pipe 41 have no influence on each other.
In order to ensure that the cement powder can uniformly enter two areas separated by the partition plate 5, the cement powder separation device further comprises a motor 61 and a disc 62, wherein the motor 61 is installed at the top of the partition plate 5, the disc 62 is coaxially fixed on an output shaft of the motor 61, in a working state, the motor 61 drives the disc 62 to rotate, and the cement powder falls onto the disc 62 and then is dispersed under the driving of the disc 62, so that the cement powder uniformly enters the two areas separated by the partition plate 5.
Further, the disc 62 top surface is sunken from the edge to the middle part, and the cement powder falls into sunken back in, upwards and to disc 62 periphery removal under disc 62's drive, finally arrives disc 62 top and falls down, and is so repeated, can realize mixing, stirring to the cement powder, improves the representativeness of sample.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (7)
1. A cement powder sampling device is characterized by comprising a conveying chute (1), a spiral sampler, a conveying pipe (3) and a first small hole sampler;
the spiral sampler comprises a first sampling pipe (21), a spiral blade shaft (22) and a motor (23), wherein the first sampling pipe (21) is positioned in the conveying chute (1), the first sampling pipe (21) is provided with a plurality of first sampling holes along the length direction, the first end of the first sampling pipe (21) extends to the outside of the conveying chute (1), the first end of the first sampling pipe (21) is provided with a discharge hole, the spiral blade shaft (22) is rotatably arranged in the first sampling pipe (21), and the spiral blade shaft (22) is connected with an output shaft of the motor (23);
the first end of the material conveying pipe (3) is communicated with the discharge hole, and the second end of the material conveying pipe (3) is communicated with the interior of the material conveying chute (1);
first aperture sampler includes second sampling tube (31), first high pressure gas supply mechanism (32) and first venturi (33), second sampling tube (31) are located conveying pipeline (3), second sampling tube (31) are equipped with the second thief hole, second sampling tube (31) first end and second end extend to conveying pipeline (3) outside respectively, first high pressure gas supply mechanism (32) and second sampling tube (31) first end intercommunication, first venturi (33) middle part and second sampling tube (31) second end intercommunication.
2. The cement powder sampling device according to claim 1, further comprising a second small hole sampler, wherein the second small hole sampler comprises a third sampling pipe (41), a second high-pressure gas supply mechanism (42) and a second venturi tube (43), the third sampling pipe (41) is located in the conveying pipe (3), the third sampling pipe (41) is provided with a third sampling hole, a first end and a second end of the third sampling pipe (41) respectively extend to the outside of the conveying pipe (3), the second high-pressure gas supply mechanism (42) is communicated with the first end of the third sampling pipe (41), and the middle of the second venturi tube (43) is communicated with the second end of the third sampling pipe (41).
3. The cement powder sampling device according to claim 2, wherein the pressure inside the second sampling tube (31) at the second sampling hole is P1, the pressure outside the second sampling tube (31) at the second sampling hole is P2, P1> P2, the pressure inside the third sampling tube (41) at the third sampling hole is P3, the pressure outside the third sampling tube (41) at the third sampling hole is P2, and P3< P2.
4. The cement powder sampling device according to claim 2, wherein the first venturi tube (33) and the second venturi tube (43) are at different heights, and projections of the first venturi tube (33) and the second venturi tube (43) on a horizontal plane are spaced by a preset distance.
5. The cement powder sampling device according to any one of claims 2 to 4, wherein a partition (5) is provided in the feed pipe (3), and the partition (5) is located between the second sampling pipe (31) and the third sampling pipe (41).
6. The cement powder sampling device according to claim 5, further comprising a motor (61) and a disc (62), wherein the motor (61) is mounted on the top of the partition plate (5), and the disc (62) is coaxially fixed on an output shaft of the motor (61).
7. The cement powder sampling device according to claim 6, wherein the top surface of the disc (62) is recessed from the edge to the middle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920406972.9U CN209945790U (en) | 2019-03-28 | 2019-03-28 | Cement powder sampling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920406972.9U CN209945790U (en) | 2019-03-28 | 2019-03-28 | Cement powder sampling device |
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| Publication Number | Publication Date |
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| CN209945790U true CN209945790U (en) | 2020-01-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920406972.9U Expired - Fee Related CN209945790U (en) | 2019-03-28 | 2019-03-28 | Cement powder sampling device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111220351A (en) * | 2020-01-15 | 2020-06-02 | 河北工业大学 | Sampling device for researching movement locus of particles |
| CN111795843A (en) * | 2020-06-19 | 2020-10-20 | 浙江全世科技有限公司 | Powdery sample online sampling device based on gas scattering |
| CN113049292A (en) * | 2021-03-01 | 2021-06-29 | 华电电力科学研究院有限公司 | Automatic spiral slag sampling device and method for power station boiler performance test |
| CN117030372A (en) * | 2023-10-09 | 2023-11-10 | 山东崇正特种水泥有限公司 | Detection sampling device of magnetic cement material |
-
2019
- 2019-03-28 CN CN201920406972.9U patent/CN209945790U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111220351A (en) * | 2020-01-15 | 2020-06-02 | 河北工业大学 | Sampling device for researching movement locus of particles |
| CN111795843A (en) * | 2020-06-19 | 2020-10-20 | 浙江全世科技有限公司 | Powdery sample online sampling device based on gas scattering |
| CN111795843B (en) * | 2020-06-19 | 2023-09-26 | 浙江全世科技有限公司 | Online sampling device of powdered sample based on gas breaks up |
| CN113049292A (en) * | 2021-03-01 | 2021-06-29 | 华电电力科学研究院有限公司 | Automatic spiral slag sampling device and method for power station boiler performance test |
| CN117030372A (en) * | 2023-10-09 | 2023-11-10 | 山东崇正特种水泥有限公司 | Detection sampling device of magnetic cement material |
| CN117030372B (en) * | 2023-10-09 | 2023-12-12 | 山东崇正特种水泥有限公司 | Detection sampling device of magnetic cement material |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200114 Termination date: 20210328 |