CN106969944B - Spiral sampling device - Google Patents
Spiral sampling device Download PDFInfo
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- CN106969944B CN106969944B CN201710300202.1A CN201710300202A CN106969944B CN 106969944 B CN106969944 B CN 106969944B CN 201710300202 A CN201710300202 A CN 201710300202A CN 106969944 B CN106969944 B CN 106969944B
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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
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
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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
- G01N2001/1006—Dispersed solids
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
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Abstract
The invention discloses a spiral sampling device, which comprises a sampling cylinder and a spiral sampling shaft arranged in the sampling cylinder, wherein a discharge hole is formed in the side part of the upper end of the sampling cylinder and used for discharging materials collected by the spiral sampling shaft, a shrinkage and discarding mechanism is arranged outside the sampling cylinder at the discharge hole and comprises a discharge cavity which is obliquely arranged, the upper port of the discharge cavity is communicated with the discharge hole and used for enabling the collected materials to form a material flow which is obliquely downwards discharged in the discharge cavity, a material discarding cavity and a shrinkage and discarding cavity which are mutually independent are formed at the lower port of the discharge cavity, and a two-part swinging plate assembly is arranged at the branch part and used for carrying out shrinkage and discarding operation on the material flow discharged by the discharge cavity. The invention has the advantages of simple and compact structure, good sampling effect, good division effect and capability of guaranteeing the representativeness and the authenticity of the sample.
Description
Technical Field
The invention mainly relates to the field of sampling equipment for material samples, in particular to a spiral sampling device.
Background
For sampling, sample preparation and assay of samples of materials (such as ores and coal), the mandatory standards exist in all countries, and the sampling and preparation of the samples must be carried out according to the standards. The sampling, sample preparation and testing processes are that the granularity and the quality of the collected sample are gradually reduced on the premise of not damaging the representativeness of the sample, the quality of the collected sample is gradually reduced until the sample meets the granularity and quality (weight) precision requirements of laboratory tests on the sample, and then the relevant test analysis is carried out on the sample meeting the requirements.
Taking the sample collection and preparation of coal as an example, the method is a sampling analysis process in practice, and the purposes of coal sampling and sample preparation are to obtain an experimental coal sample, the experimental result of which can represent the whole batch of sampled coal. Coal is a non-uniform substance (particle size, mass characteristic distribution and the like), the mass of sampled coal is generally large (tens of tons to tens of thousands of tons are different), and a representative part of coal is sampled from the sampled coal in a process called sampling, so that various methods such as mechanical sampling, manual sampling, semi-mechanical sampling and the like exist at present. After the sample is collected according to the standard, the next process is sample preparation, and the sample preparation process generally comprises the processes of crushing, mixing, dividing, drying and the like. After the sample is prepared, the next sample 'test' is carried out, and the sample is analyzed. Whether "sampling", "sample preparation" or "assay", there is no loss of sample in the process, and some physical or chemical change of the sample cannot occur, which would otherwise have an effect on the final test result.
In the sampling work of samples of materials (such as ores and coals), the samples are required to be collected from a material pile by a spiral sampling device, subjected to division treatment, and subjected to subsequent sample preparation work. In the sampling process of the spiral full-section sampling device, after the coal sample reaches the top of the sampling cylinder, the sample reserving port and the sample discarding port which are reserved from the previous step respectively enter the corresponding pipes to achieve the function of sample reserving division, and the division ratio is determined by the preset opening width; the general methods for reserving samples and dividing the full section of the spiral in the industry are as follows: a sample shrinkage and discarding mode for carrying out perforation on the outer cylinder wall of the screw shaft near the top; and the other way is to carry out sample reserving and waste material dividing on the top of the spiral blade by a fixed proportion. The following technical problems exist:
(1) The first shrinkage structure is that the width of the sample-retaining opening can be adjusted by the adjusting plate, but the width cannot be reduced without limit (because the opening width is not smaller than the size of the maximum sampled material according to the requirement), which easily causes granularity distortion and non-representativeness of the sample-retaining. Meanwhile, the structure has certain limit on the reserving ratio, so that the reserved sample amount is large, and the requirement on sample preparation equipment at the rear end is too high.
(2) The second way of dividing the material is to fix the dividing ratio, which is easy to cause the top blocking and accumulation, especially wet materials, because the dividing ratio is determined at the time of manufacture (the minimum size after dividing must not be smaller than the maximum size of the materials to be sampled).
(3) No matter the first kind or the second kind, the two kinds of structural forms of waste materials are directly discharged from the discharge opening at the upper end, so that ash and coal are easy to raise and spread, and the environment is not protected.
(4) The two structural forms can not realize the function of stepless division in the true sense, so that the problem of uneven material particle size distribution can not be adapted.
(5) The two structures do not have the functions of full-section sampling and point sampling, the abandoning and reserving ratio is inaccurate, the problem of large sampling and reserving quantity exists, and the representativeness and the authenticity of the samples in the subsequent sample preparation are affected.
Disclosure of Invention
The technical problems solved by the invention are as follows: aiming at the problems existing in the prior art, the spiral sampling device is simple and compact in structure, good in sampling effect and division effect, and can ensure the representativeness and the authenticity of samples.
In order to solve the technical problems, the invention adopts the following technical scheme:
the utility model provides a spiral sampling device, includes the sampling tube and locates the spiral sampling axle in the sampling tube, a discharge gate has been seted up to the upper end lateral part of sampling tube in order to be used for discharging the material that the spiral sampling axle was adopted, sampling tube is equipped with the shrinkage and abandons material mechanism in discharge gate department outward, the shrinkage and abandons material mechanism includes a discharge chamber that is the slant and arranges, the upper port and the discharge gate intercommunication of discharge chamber in order to be used for making the material of adopting form the oblique exhaust material flow in the discharge chamber, the inferior port punishment branch of discharge chamber forms mutually independent and abandons material chamber and shrinkage and collect the chamber, branch department is equipped with the bipartition wobble plate subassembly in order to be used for carrying out shrinkage and abandoning the material operation to the material flow that the discharge chamber was unloaded.
As a further improvement of the invention, the two-part swinging plate assembly comprises a driving piece and a swinging plate with a rotating shaft, the swinging plate is movably arranged in the discharging cavity through the rotating shaft, and one end of the rotating shaft extends out of the discharging cavity and is connected with the driving piece to drive the swinging plate to swing left and right so as to realize shrinkage and discarding operation.
As a further improvement of the present invention, one end of the rotation shaft is connected with the driving member through a crank-link assembly, the crank-link assembly includes a disc, a first link and a second link, which are sequentially hinged, the disc is connected with the driving member, and the second link is connected with the rotation shaft.
As a further improvement of the invention, the upper end of the sampling cylinder is provided with a lifting and rotating mechanism for realizing lifting and rotating sampling operation of the spiral sampling shaft, the lifting and rotating mechanism comprises a descending counter for calculating the sampling descending depth of the spiral sampling shaft, and the swinging of the swinging plate is adjusted by the bipartite swinging plate assembly according to the data of the descending counter so as to realize random sample reserving of different depths.
As a further improvement of the invention, the driving piece is a variable frequency speed regulating motor for realizing stepless reduction regulation by regulating the swing of the swing plate.
As a further improvement of the invention, the unloading chamber is provided with an access window part for opening to carry out overhaul and maintenance operations.
As a further improvement of the invention, the lower port of the waste material chamber is connected with a vertically-arranged waste material pipe, and the lower port of the waste material pipe is synchronously inserted into the material pile during downsampling so as to enable the waste material discharged from the waste material chamber to be directly discharged into the material pile through the waste material pipe.
As a further improvement of the invention, the disposal pipe is formed by sequentially sleeving a plurality of sections of pipes to form a movable telescopic pipe for self-adapting to different sampling descending heights.
Compared with the prior art, the invention has the advantages that:
(1) According to the spiral sampling device, only one discharge hole is formed, so that materials are all discharged into the discharge cavity to be subjected to dividing operation, the opening width of the discharge hole meets national standard requirements, and simultaneously, the opening width of the discharge hole can be three times of the maximum nominal granularity of the sampled materials.
(2) According to the spiral sampling device, the shrinkage ratio is not particularly limited by the shrinkage operation mode of the special inclined surface unloading and bipartite swinging plate assembly, the shrinkage is flexible and changeable, the excessive sample remaining amount is avoided, the requirement on sample preparation equipment at the rear end is not excessive, and the applicability of the equipment is improved.
(3) The spiral sampling device adopts a discharge port design and the special division operation mode, so that the division ratio is not fixed, the top blocking and accumulation condition can not be caused, the sampling and division effects are good, and the safety is high.
(4) According to the spiral sampling device, the swing of the two swinging plate assemblies is flexible and adjustable, so that the function of stepless division in the true sense can be realized, the device can be well adapted to the problem of uneven material granularity distribution, good sampling and division effects are further ensured, and the representativeness and the authenticity of samples in the follow-up sample preparation are effectively ensured.
(5) According to the spiral sampling device, the stronger driving torque of the driving piece is ensured, and meanwhile, the crank connecting rod assembly can effectively buffer the influence of the rotating speed of the driving piece on the swinging plate, so that the swinging stability and reliability of the swinging plate are effectively ensured, and the dividing effect is further effectively ensured.
(6) The spiral sampling device has high intelligent degree, well realizes random sample reservation in any position and any depth, accurately samples and reserves, solves the problem of large sample reservation, realizes the function of point sampling, and effectively ensures the representativeness and the authenticity of samples for subsequent sample preparation.
(7) According to the spiral sampling device, the swinging plate can realize the function of stepless division in the true sense, so that the problem of uneven material particle size distribution is well adapted, the sampling division effect is excellent, and the representativeness and the authenticity of samples in the subsequent sample preparation are further effectively ensured. Meanwhile, the speed of the swinging plate is reduced through variable frequency speed regulation, the shrinkage ratio is increased, and the problem of large sampling and sample reserving quantity can be effectively solved
(8) According to the spiral sampling device, the material discarding pipe is specially and scientifically designed, so that the conditions of ash lifting and coal scattering cannot be caused in the material discarding process, and the environment-friendly effect is excellent.
Drawings
Fig. 1 is a schematic diagram of the principle of the three-dimensional structure of the spiral sampling apparatus of the present invention.
Fig. 2 is a schematic diagram of the principle of the front perspective structure of the spiral sampling apparatus of the present invention.
Fig. 3 is a schematic diagram of the front perspective structure of the shrinkage and separation material discarding mechanism of the present invention.
Fig. 4 is a schematic perspective view of the principle of the structure of the bipartite wobble plate assembly of the present invention.
Legend description:
1. a sampling cylinder; 11. a discharge port; 2. a spiral sampling shaft; 3. a shrinkage dividing and discarding mechanism; 31. a discharge chamber; 311. an access window portion; 32. a discard chamber; 33. a dividing and collecting chamber; 34. a bipartite swing plate assembly; 341. a driving member; 342. a swinging plate; 343. a crank-connecting rod assembly; 35. and (5) discarding the material pipe.
Detailed Description
The invention is described in further detail below with reference to specific embodiments and figures.
As shown in fig. 1 to 4, the invention provides a spiral sampling device, which comprises a sampling cylinder 1 and a spiral sampling shaft 2 arranged in the sampling cylinder 1, wherein a discharge hole 11 is formed in the lateral part of the upper end of the sampling cylinder 1 and is used for discharging all materials picked up by the spiral sampling shaft 2 through the discharge hole 11, a shrinkage and separation waste mechanism 3 is arranged outside the sampling cylinder 1 at the discharge hole 11, the shrinkage and separation waste mechanism 3 comprises a discharge chamber 31 which is obliquely arranged, the upper port of the discharge chamber 31 is communicated with the discharge hole 11 and is used for enabling the picked materials to form a material flow which is obliquely downwards discharged in the discharge chamber 31, a waste chamber 32 and a shrinkage and separation collection chamber 33 which are mutually independent are respectively formed at the lower port of the discharge chamber 31, and a two-division swing plate assembly 34 is arranged at the branch position and is used for carrying out shrinkage and separation waste operation on the material flow discharged by the discharge chamber 31. The specific implementation principle is as follows:
the sampling cylinder 1 and the spiral sampling shaft 2 of the spiral sampling device extend into a material pile firstly, all the sampled materials are discharged into the discharging cavity 31 through the discharging hole 11, and the discharging cavity 31 is obliquely arranged, so that the materials form an obliquely downward discharged material flow on the inclined surface of the discharging cavity 31; at this time, the bisection swing plate assembly 34 provided at the lower end swings to perform the dividing operation (and similar to the intercepting sampling operation on the belt) in a intercepting manner, so that part of the divided material flows into the dividing and collecting chamber 33 to be stored, and the other waste material flows into the waste material chamber 32. Through the special scientific design, the method has the following advantages:
firstly, the spiral sampling device only needs to be provided with one discharge hole 11, and materials are discharged into the discharge cavity 31 through the discharge hole 11 for division operation, so that the opening width of the discharge hole 11 meets the national standard requirements, and simultaneously, the opening width of the discharge hole can be opened to three times of the maximum nominal granularity of the sampled materials.
According to the spiral sampling device, the shrinkage and rejection ratio is not particularly limited through the shrinkage operation mode of the special inclined plane unloading and bipartite swinging plate assembly 34, the shrinkage is flexible and changeable, the excessive sample reserving quantity is avoided, the requirement on sample preparation equipment at the rear end is not excessively high, and the applicability of the equipment is improved.
Thirdly, the spiral sampling device adopts the design of the discharge hole 11 and the special division operation mode, so that the division ratio is not fixed, the condition of top blocking and accumulation is not caused, the sampling and division effects are good, and the safety is high.
Fourthly, the spiral sampling device of the invention can realize the function of stepless division in the true sense because the swing of the two-division swing plate assembly 34 is flexible and adjustable, so that the device can well adapt to the problem of uneven material granularity distribution, thereby further ensuring good sampling and division effects and effectively ensuring the representativeness and the authenticity of samples for subsequent sample preparation.
As shown in fig. 2 to 4, further, in the preferred embodiment, the bipartite swing plate assembly 34 includes a driving member 341 and a swing plate 342 with a rotation shaft, the swing plate 342 is movably mounted in the discharging chamber 31 through the rotation shaft (the rotation shaft is fixed through bearings at two ends), and one end of the rotation shaft extends out of the discharging chamber 31 and is connected to the driving member 341 for driving the swing plate 342 to swing left and right to implement the shrinkage and disposal operation. In this embodiment, one end of the rotation shaft is connected to the driving member 341 through a crank-link assembly 343, and the crank-link assembly 343 includes a disc, a first link and a second link, which are sequentially hinged, the disc is connected to the driving member 341, and the second link is connected to the rotation shaft. Through above special scientific design for in the time of guaranteeing the stronger drive torsion of driving piece 341 (in order to realize good swing division effect), crank link assembly 343 can also effectually cushion the influence of the rotational speed of driving piece 341 to wobble plate 342, this effectual wobbling stability and the reliability of wobble plate 342 of having guaranteed, and then effectively guaranteed the division effect.
Further, in the preferred embodiment, the upper end of the sampling cylinder 1 is provided with a lifting and rotating mechanism (not shown in the figure) for enabling the spiral sampling shaft 2 to perform lifting and rotating sampling operation, the lifting and rotating mechanism comprises a descent counter (not shown in the figure) for calculating the sampling descent depth of the spiral sampling shaft 2, and the swinging of the swinging plate 342 is adjusted by the bipartite swinging plate assembly 34 according to the data of the descent counter for realizing random sampling with different depths. The specific implementation principle is as follows:
the down counter is a rotary encoder with the accuracy of 0.1mm. During sampling, the starting and stopping of the bipartite swing plate assembly 34 are controlled by judging the descending depth of the spiral sampling shaft 2 provided by the descending counter, so that the sample reserving of a material with a certain depth at a designated position is realized; for example, to collect samples at point a and point B sequentially, when the spiral sampling shaft 2 descends from the top of the material pile to point a, the swinging plate assembly 34 faces the side of the shrinkage collecting chamber 33 all the time so as to keep the shrinkage collecting chamber 33 closed, so that all the materials collected in the process are discharged through the discard chamber 32, and when the materials reach point a, the swinging plate assembly 34 adjusts and swings according to the data of the descent counter so as to carry out the sampling shrinkage operation at point a. When the point A continues to descend to the point B, the bipartite swinging plate assembly 34 faces one side of the shrinkage cavity 33 again to enable the shrinkage cavity 33 to be kept closed, and after the point B is reached, the bipartite swinging plate assembly 34 adjusts swinging according to the data of the descent counter, and then sampling shrinkage operation of the point B is carried out. Through above special scientific design for this device intelligent degree is high, fine realization optional position, random sample in the random degree of depth are reserved, and the sample volume is reserved in the sample is accurate, solves the problem that the sample volume is reserved in the sample is bigger, has realized the function of some sampling, has effectively guaranteed the sample representativeness and the authenticity of follow-up system appearance.
Further, in the preferred embodiment, the driver 341 is a variable frequency motor for stepless speed reduction adjustment by adjusting the swing of the swing plate 342. In specific implementation, the speed of the swing plate 342 is reduced or increased through variable frequency speed regulation of the motor, so that the material flow is intercepted in a proportion and section mode, the sampling and sample reserving quantity is accurate, and the stepless division is realized. Through above special scientific design for this device intelligent degree is high, and the function of stepless division in the true sense can be realized to the swing board 342, fine adaptation material particle size distribution uneven problem for sampling division effect is splendid, has further effectively guaranteed the sample representativeness and the authenticity of follow-up system appearance. Meanwhile, the speed of the swing plate 342 is reduced through variable frequency speed regulation, the shrinkage ratio is increased, and the problem that the sampling and sample reserving quantity is large can be effectively solved.
Further, as shown in fig. 1, in the preferred embodiment, the discharge chamber 31 is provided with an access window 311 for opening for performing an inspection and maintenance operation. Because the special shrinkage operation mode of slope discharging and the double-swing-plate assembly 34 is adopted, the special shrinkage operation can be timely maintained by arranging the access window 311, and the implementation of the special shrinkage operation is effectively ensured.
Further, in the preferred embodiment, as shown in fig. 1, a vertically-arranged reject pipe 35 is connected to the lower port of the reject chamber 32, and the lower port of the reject pipe 35 is synchronously inserted into the stack during downsampling, so that the reject discharged from the reject chamber 32 is directly discharged into the stack through the reject pipe 35. Through above special scientific design for in abandoning the material in-process, can not cause the condition of ash lifting, spilling the coal, the environmental protection effect is splendid. Of course, in other embodiments, the disposal pipe 35 may be a long cloth bag, and the lower ends of the long cloth bags are in consistent contact with the material pile, so that the waste material is directly discharged into the material pile through the long cloth bag, and the situations of ash lifting and coal scattering are avoided.
Further, in another preferred embodiment, as shown in fig. 2, the reject tube 35 is formed by sequentially sleeving a plurality of sections of tubes to form movable telescopic tubes for adapting to different sampling descent heights (three sections of tubes are shown). That is, when the device is down-sampled, the pipes at the lowest end are not inserted into the stack after contacting the stack, but the pipes are gradually compressed and shortened as the device is down, but the lowest end of the reject pipe 35 is always kept on the stack. This allows the waste discharged through the reject duct 35 to be discharged directly into the pile all the way down no matter where the apparatus is lowered, without causing the dust and coal to be raised, with excellent environmental protection, but without creating frictional resistance between the reject duct 35 and the pile when the sample is withdrawn.
The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above examples, and all technical solutions belonging to the concept of the present invention belong to the protection scope of the present invention. It should be noted that modifications and adaptations to the invention without departing from the principles thereof are intended to be within the scope of the invention as set forth in the following claims.
Claims (8)
1. The spiral sampling device comprises a sampling cylinder (1) and a spiral sampling shaft (2) arranged in the sampling cylinder (1), and is characterized in that a discharge hole (11) is formed in the side part of the upper end of the sampling cylinder (1) and used for discharging materials picked up by the spiral sampling shaft (2), a shrinkage and separation waste mechanism (3) is arranged outside the discharge hole (11) of the sampling cylinder (1), the shrinkage and separation waste mechanism (3) comprises a discharge cavity (31) which is obliquely arranged, the upper port of the discharge cavity (31) is communicated with the discharge hole (11) and used for enabling the picked materials to form an obliquely discharged material flow in the discharge cavity (31), a waste cavity (32) and a shrinkage and separation collection cavity (33) which are mutually independent are respectively formed at the lower port of the discharge cavity (31), and a double-swing plate assembly (34) is arranged at the branch position and used for carrying out shrinkage and separation operation on the material flow discharged by the discharge cavity (31); the top of the upper end of the sampling tube (1) is provided with a flange plate assembly for hoisting the sampling tube (1).
2. The spiral sampling device according to claim 1, wherein the bipartite swinging plate assembly (34) comprises a driving piece (341) and a swinging plate (342) with a rotating shaft, the swinging plate (342) is movably arranged in the discharging cavity (31) through the rotating shaft, and one end of the rotating shaft extends out of the discharging cavity (31) and is connected with the driving piece (341) and is used for driving the swinging plate (342) to swing left and right so as to realize the shrinkage and dumping operation.
3. The spiral sampling apparatus of claim 2, wherein one end of the rotation shaft is connected to the driving member (341) through a crank-link assembly (343), the crank-link assembly (343) comprising a disc, a first link and a second link hinged in sequence, the disc being connected to the driving member (341), the second link being connected to the rotation shaft.
4. The spiral sampling device according to claim 2, wherein the upper end of the sampling cylinder (1) is provided with a lifting and rotating mechanism for enabling the spiral sampling shaft (2) to realize lifting and rotating sampling operation, the lifting and rotating mechanism comprises a descending counter for calculating the descending depth of the spiral sampling shaft (2), and the swinging of the swinging plate (342) is adjusted by the aid of the data of the descending counter so as to realize random sample retention with different depths by the aid of the swinging plate assembly (34).
5. The spiral sampling apparatus of claim 4, wherein the driving member (341) is a variable frequency speed motor for stepless division adjustment by adjusting the swing of the swing plate (342).
6. Screw sampling device according to claim 1, characterized in that the discharge chamber (31) is provided with an access window (311) for opening for service maintenance operations.
7. Spiral sampling apparatus according to any one of claims 1 to 6, characterized in that the lower port of the reject chamber (32) is connected to a vertically arranged reject duct (35), the lower port of the reject duct (35) being synchronously inserted into the stack during downsampling for discharging reject discharged from the reject chamber (32) directly into the stack via the reject duct (35).
8. Spiral sampling device according to claim 7, characterized in that the reject (35) is formed by a multi-section tube in turn sleeved to form a movable telescopic tube for adapting to different sampling descent heights.
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| CN201710300202.1A CN106969944B (en) | 2017-04-28 | 2017-04-28 | Spiral sampling device |
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| CN201710300202.1A CN106969944B (en) | 2017-04-28 | 2017-04-28 | Spiral sampling device |
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| CN109425516B (en) * | 2017-08-21 | 2024-07-05 | 湖南三德科技股份有限公司 | Automatic division device |
| CN109085047A (en) * | 2018-11-02 | 2018-12-25 | 长沙开元仪器有限公司 | A kind of full-automatic sample making apparatus and its binary channels material sample switching device |
| CN111189671A (en) * | 2020-03-31 | 2020-05-22 | 中国二十二冶集团有限公司 | Automatic sampling device and sampling method for entering crushed stone of mixing station |
| CN118684013B (en) * | 2024-08-26 | 2024-11-05 | 江西铜业技术研究院有限公司 | A reduction device |
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| CN2738233Y (en) * | 2004-09-18 | 2005-11-02 | 徐州市三原技术产业有限公司 | Low breakage rate coke screw sampler |
| CN201060125Y (en) * | 2007-06-22 | 2008-05-14 | 方彰林 | Bucket full section cutting sorter |
| CN201497650U (en) * | 2009-08-26 | 2010-06-02 | 长沙开元仪器有限公司 | Electric sampling device |
| CN102092578A (en) * | 2011-03-15 | 2011-06-15 | 长沙开元仪器股份有限公司 | Flow guiding riffle |
| CN202305271U (en) * | 2011-07-09 | 2012-07-04 | 彭忠林 | Bulk-material sampling head |
| CN202204696U (en) * | 2011-08-23 | 2012-04-25 | 徐州市申克测控机电设备有限公司 | Embarcadero sampling and sample preparing device on ship |
| CN103926107A (en) * | 2014-04-29 | 2014-07-16 | 湖南万通科技有限公司 | Sampling mechanism of sampling machine |
| CN203929486U (en) * | 2014-06-30 | 2014-11-05 | 南京国电环保科技有限公司 | Automatic cell reduction device |
| CN104181021A (en) * | 2014-08-26 | 2014-12-03 | 长沙开元仪器股份有限公司 | Diversion-type splitter and splitting method |
| CN204495589U (en) * | 2015-03-23 | 2015-07-22 | 浙江华电电站设备有限公司 | A kind of spiral full-section sampling head |
| CN104748998A (en) * | 2015-04-16 | 2015-07-01 | 长沙开元仪器股份有限公司 | Spiral sampling device |
| CN204731061U (en) * | 2015-06-23 | 2015-10-28 | 湖南三德科技股份有限公司 | A kind of spiral sampling device |
| CN105223056A (en) * | 2015-10-23 | 2016-01-06 | 长沙开元仪器股份有限公司 | A kind of swing type contracting device |
| CN205785868U (en) * | 2016-05-27 | 2016-12-07 | 国电靖远发电有限公司 | Sampling apparatus for gathering and processing of sample |
| CN206725267U (en) * | 2017-04-28 | 2017-12-08 | 湖南三德科技股份有限公司 | A kind of spiral sampling device |
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| CN106969944A (en) | 2017-07-21 |
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