CN104897440A - Sample preparation contracting dividing device - Google Patents
Sample preparation contracting dividing device Download PDFInfo
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- CN104897440A CN104897440A CN201510207889.5A CN201510207889A CN104897440A CN 104897440 A CN104897440 A CN 104897440A CN 201510207889 A CN201510207889 A CN 201510207889A CN 104897440 A CN104897440 A CN 104897440A
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- funnel
- sample
- division
- distributing device
- contracting
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- 238000002360 preparation method Methods 0.000 title claims abstract description 44
- 230000002093 peripheral effect Effects 0.000 claims abstract description 14
- 230000014759 maintenance of location Effects 0.000 claims abstract description 10
- 238000005070 sampling Methods 0.000 claims 2
- 239000000523 sample Substances 0.000 abstract description 146
- 239000000463 material Substances 0.000 abstract description 30
- 239000003245 coal Substances 0.000 abstract description 13
- 230000009467 reduction Effects 0.000 description 17
- 238000000034 method Methods 0.000 description 10
- 230000007246 mechanism Effects 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 6
- 239000000428 dust Substances 0.000 description 6
- 230000005484 gravity Effects 0.000 description 5
- 238000009826 distribution Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
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- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a sample preparation contracting dividing device, relates to the technical field of sample preparation of a coal sample, and can solve the technical problem of low running reliability of a contracting dividing device. The contracting dividing device in turn, from top to bottom, includes a distributing device, a contracting dividing funnel and a sample retention device; the distributing device includes a distributing device body with a conical surface peripheral surface, a plurality of diversion channels are arranged on the peripheral surface of the distributing device body, the diversion channels are from top to down obliquely arranged, the oblique direction is same, the distributing device body emptily sleeves a vertically-placed fixed shaft, the fixed shaft is in fixed connection with the contracting dividing funnel, the fixed shaft and the contracting dividing funnel are coaxial; the contracting dividing funnel is an inverted conical structure, and the side wall of the contracting dividing funnel is provided with a material dropping hole; and the sample preparation contracting dividing device is used for contracting dividing of a sample material.
Description
Technical Field
The invention relates to the technical field of coal sample preparation, in particular to a sample preparation divider.
Background
In the process of preparing the coal sample, the division is a key step. And the division is to reduce the coal sample amount under the condition that the granularity of the coal sample is not changed so as to reduce the subsequent workload and achieve the coal sample amount required by the inspection. In general, a sample preparation splitter is used to split a coal sample.
The sample preparation division device comprises a distributor, a division funnel, a sample reserving device, a driving motor, a transmission mechanism and the like, wherein the division funnel is provided with a blanking hole. When the sample preparation division device divides the coal sample, the driving motor drives the transmission mechanism to operate, the transmission mechanism drives the division funnel to rotate, the rotating division funnel receives the coal sample scattered from the distributing device and enables part of the coal sample to fall into the sample reserving device through the blanking hole in the division funnel, and therefore the purpose of dividing the coal sample and obtaining the needed coal sample in the sample reserving hopper is achieved.
When the sample preparation splitter is used, the distributor, the splitting funnel, the sample reserving device, the driving motor, the transmission mechanism and other parts are required to work together in a matching mode to complete splitting of the coal sample together.
Disclosure of Invention
The invention provides a sample preparation splitter, which can solve the technical problem of low operation reliability.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a sample preparation division device which sequentially comprises a distributing device, a division funnel and a sample reserving device from top to bottom; wherein,
the distributing device comprises a distributing device body, the peripheral surface of which is a conical surface, a plurality of flow guide channels are arranged on the peripheral surface of the distributing device body, and the flow guide channels are obliquely arranged from top to bottom and have the same oblique direction; the distributing device body is sleeved on a vertically arranged fixed shaft in a hollow mode, the fixed shaft is fixedly connected with the division funnel, and the fixed shaft and the division funnel are coaxial;
the division funnel is of an inverted cone structure, and blanking holes are formed in the side wall of the division funnel.
When the sample preparation splitter is used for splitting sample materials, firstly, the sample materials enter the flow guide channel on the outer peripheral surface of the distributing device body, and vertical downward pressure is applied to the flow guide channel under the action of self gravity; then, partial sample materials in the hopper cavity of the division funnel fall into the sample reserving device through the blanking holes in the side wall of the division funnel, and therefore division of the sample materials is achieved. When the sample preparation division device finishes the division of the sample materials, because no sample materials exist in the flow guide channel of the distributor body, the tangential component force in the horizontal direction for pushing the distributor to rotate can not be continuously generated, and the distributor can automatically stop rotating. In the sample preparation division device, the pressure of the sample material on the distributing device can automatically push the distributing device to rotate only by the self gravity of the sample material in the sample material division process, so that the sample material is automatically divided, and therefore, compared with the existing sample preparation division device, the sample preparation division device does not need a driving motor, a transmission mechanism and the like to drive the distributing device, and the operation reliability of the sample preparation division device is improved.
Drawings
FIG. 1 is a perspective view, partially in section, of a specimen preparation reducer according to an embodiment of the present invention;
FIG. 2 is another perspective view, partially in section, of a specimen preparation reducer according to an embodiment of the present invention;
FIG. 3 is a longitudinal sectional view of a sample preparation splitter according to an embodiment of the present invention;
fig. 4 is a sectional view of a distributor in the sample preparation splitter according to the embodiment of the present invention.
Description of reference numerals:
1-a distributor, 2-a division funnel, 3-a sample retention device, 4-a fixed shaft, 5-a feeding bin and 6-a bracket;
101-a distributor body, 102-blades and 103-a flow guide channel;
201-blanking hole, 202-opening regulating part, 203-sample discarding port;
301-sample port;
501-feed inlet.
Detailed Description
For the convenience of understanding, the sample splitter according to the embodiment of the present invention will be described in detail below with reference to the accompanying drawings.
The embodiment provides a sample preparation splitter, as shown in fig. 1-3, the sample preparation splitter sequentially comprises a distributing device 1, a splitting funnel 2 and a sample retaining device 3 from top to bottom;
the distributing device 1 comprises a distributing device body 101 with a conical outer peripheral surface, a plurality of flow guide channels 103 are arranged on the outer peripheral surface of the distributing device body 101, and the flow guide channels 103 are obliquely arranged from top to bottom and have the same oblique direction; the distributing device body 101 is sleeved on a vertically arranged fixed shaft 4 in an empty mode, the fixed shaft 4 is fixedly connected with the dividing funnel 2, and the fixed shaft 4 and the dividing funnel 2 are coaxial;
the division funnel 2 is of an inverted cone structure, and a blanking hole 201 is formed in the side wall of the division funnel 2.
In the process of reducing and dividing the sample by the sample reducing and dividing device, firstly, the sample enters the flow guide channel 103 on the outer peripheral surface of the distributing device body 101, and vertical downward pressure is applied to the flow guide channel 103 under the action of self gravity, because the flow guide channel 103 is obliquely arranged from top to bottom and has the same oblique direction, the acting force applied to the flow guide channel 103 by the sample generates a tangential component force in the horizontal direction for pushing the distributing device 1 to rotate, and the tangential component force in the horizontal direction further pushes the distributing device 1 to rotate around the fixed shaft 4, and in the rotating process of the distributing device 1, the sample in the flow guide channel 103 is uniformly scattered downward into a hopper cavity of the reducing and dividing funnel 2; subsequently, part of the sample in the cavity of the dividing funnel 2 falls into the sample reserving device 3 through the blanking holes 201 on the side wall of the dividing funnel 2, so that the division of the sample is realized. When the sample preparation division device finishes dividing the sample materials, because no sample materials exist in the flow guide channel 103 of the material distribution body 1, the tangential component force in the horizontal direction for pushing the material distribution device 1 to rotate can not be generated continuously, and the material distribution device 1 automatically stops rotating.
This system appearance division ware just can promote the rotation of distributing device 1 automatically only depending on the pressure of sample material self gravity to distributing device 1 at the sample material division in-process, realizes the automatic division of sample material, consequently, compares with current system appearance division ware, need not driving motor, drive mechanism etc. and drive distributing device 1, has reduced the factor that influences system appearance division ware normal work to the operational reliability of system appearance division ware has been improved.
In addition, compared with the sample preparation splitter in the prior art, in the sample preparation splitter, adverse disturbance factors generated in the operation process of a driving motor and a transmission mechanism are not generated in the sample preparation splitter, so that the influence of the adverse disturbance factors on the sample preparation splitter precision is avoided, and the splitting precision is improved; the sample material is driven by the distributing device 1 to rotate, so that the sample material is uniformly scattered along the circumferential direction of the distributing device 1, the sample material is prevented from being accumulated in a certain direction, the directional tendency of scattering of the sample material is eliminated, and the division precision is further improved; when no sample material exists in the distributing device 1, the distributing device 1 automatically stops rotating, so that the idling phenomenon of the distributing device 1 is reduced or even avoided, the service life of the sample preparation divider is prolonged, and energy is saved.
In the above embodiments, the flow guide channel 103 may be formed in various ways, for example, a groove is formed on the outer circumferential surface of the distributor body 101 from top to bottom; for another example, as shown in fig. 4, the outer circumferential surface of the distributor body 101 is provided with a plurality of vanes 102, and the area between two adjacent vanes 102 and the outer circumferential surface of the distributor body 101 forms a flow guide channel 103. When the sample distributor is used, after a sample enters the flow guide channel 103, the sample gravity exerts pressure on the blades 102 and generates a horizontal tangential component force, so that the distributor 1 is pushed to rotate around the fixed shaft 4, and the distributor 1 realizes the uniform scattering function of the sample. When the structural size of the distributor body 101 and the inclination direction of the flow guide channel 103 are determined, the larger the sample flow in the flow guide channel 103 is, the larger the pressure of the sample on the flow guide channel 103 is, the larger the generated tangential component force in the horizontal direction is, and the larger the rotation speed of the distributor 1 is, so that the sample blanking is faster and the division efficiency is higher.
In addition, the blades 102 may be made of common materials, such as stainless steel, which can reduce the material cost of the distributor 1. In addition, the connection between the blade 102 and the distributor body 101 may be various, for example, the blade 102 and the distributor body 101 may be in an integral structure, or the blade 102 is welded to the outer circumferential surface of the distributor body 101, or the blade 102 is fixed to the distributor body 101 by a detachable fixed connection. Further, the shape of the blade 102 may be various, for example, a flat blade, a circular narrow blade, a circular blade, a wing blade, a flat curved backward blade, or the like.
In the above embodiment, in order to improve the scattering uniformity of the sample materials, as shown in fig. 4, the plurality of blades 102 are uniformly arranged along the circumferential direction of the distributor body 101, and the guide channels 103 are also uniformly distributed in the circumferential direction, so that an equal amount of sample materials flow through each guide channel 103 during feeding, thereby ensuring the distribution uniformity of the sample materials in the entire circumferential direction of the distributor body 101 and improving the scattering uniformity of the sample materials.
In order to reduce the dust generated during the feeding of the sample material when the sample material is reduced, in the above embodiment, as shown in fig. 1 to 3, the sample preparation reduction splitter further includes a feeding bin 5, the distributing device 1 is located in the feeding bin 5, the feeding bin 5 is provided with a feeding hole 501, and the feeding hole 501 is located above the distributing device 1. At the initial stage of sample material division, the sample material falls into blade 102 by feed inlet 501, and the raise dust that produces at the scattering in-process of sample material is blockked by feeding storehouse 5 to avoid the raise dust to reveal in the outside air, avoid environmental pollution, do benefit to the environmental protection.
In the above embodiment, in order to further ensure the reduction precision of the sample, as shown in fig. 1 to fig. 3, the feeding bin 5 is designed to be a conical shell structure, and the large end opening of the feeding bin 5 is connected with the large end opening of the reduction funnel 2, where the connection mode may be a direct contact connection or an indirect connection. The feeding bin 5 with the conical shell structure can enable the inner wall of the feeding bin 5 to be adaptive to the appearance of the distributor 1, a certain gap is kept between the inner wall of the feeding bin 5 and the blades 102 of the distributor 1, sample materials can be quickly blocked after flying to the inner wall of the feeding bin 5 under the action of centrifugal force and fall into the flow guide channel 103 again, the final flow direction of the sample materials is ensured, the sample materials in the flow guide channel 103 on the outer peripheral surface of the distributor 1 fall into a preset area in the hopper cavity of the division hopper 2, and accurate division of the sample materials is further ensured. In addition, the conical shell structure can be formed by directly rolling the metal plate, so that the structure of the sample preparation splitter is simplified, and the material and manufacturing cost is reduced.
In the above embodiment, in order to make all the sample materials in the flow guide channel 103 on the outer peripheral surface of the distributing device 1 smoothly fall into the predetermined area in the cavity of the reduction funnel 2, as shown in fig. 3, the diameter of the large-end opening of the feeding bin 5 is smaller than or equal to the diameter of the large-end opening of the reduction funnel 2. Therefore, the sample materials in the diversion channel 103 are not blocked in the process of falling into the hopper cavity of the reduction funnel 2, and all the sample materials in the diversion channel 103 are directly scattered to a preset area in the hopper cavity of the reduction funnel 2, so that all the sample materials are ensured to be smoothly discharged.
In order to precisely adjust the reduction ratio of the sample preparation splitter, an opening adjusting member 202 for adjusting the opening degree of the blanking hole is provided on the side wall of the reduction funnel 2, as shown in fig. 1 to 3. Wherein, the division ratio refers to the ratio of the sample amount of the sample falling into the sample retention device 3 to the sample discarding amount of the sample remaining in the division funnel 2. When more sample retention is needed, the opening degree of the blanking hole 201 is adjusted to be larger through the opening adjusting piece 202, and when less sample retention is needed, the opening degree of the blanking hole 201 is adjusted to be smaller through the opening adjusting piece 202, namely, the opening degree of the blanking hole 201 is adjusted to be proper in size through the opening adjusting piece 202, so that the sample preparation splitter obtains an accurate splitting proportion. In addition, the division proportion of the sample preparation division device can be adjusted by adjusting the number of the blanking holes 201, when more samples are needed, a plurality of blanking holes 201 are opened, and otherwise, a few blanking holes 201 are opened.
Specifically, the structural shape of the opening adjusting member 202 may be various, for example, the opening adjusting member 202 is designed to be a flat plate structure, as shown in fig. 1 and 2, a long hole is provided on the opening adjusting member 202, an adjusting bolt or screw is fittingly installed in the long hole, and the opening adjusting member 202 is adjustably fixed above the blanking hole 201 on the side wall of the division funnel 2 by the adjusting bolt or screw.
In order to discharge the sample materials left in the cavity of the reduction funnel 2, the bottom of the reduction funnel 2 is provided with a sample discarding port 203, and the sample discarding port 203 extends out of the sample reserving device 3, so that the sample materials left after the reduction in the cavity of the reduction funnel 2 can be automatically gathered at the bottom of the reduction funnel 2, and the unnecessary sample materials can be smoothly discharged through the sample discarding port 203.
In addition, there are various ways for fixedly connecting the dividing funnel 2 and the fixed shaft 4, for example, a bracket 6 may be disposed between the dividing funnel 2 and the fixed shaft 4, as shown in fig. 1 to 3, the bracket 6 is fixedly disposed at the inner side of the dividing funnel 2, and the fixed shaft 4 is fixed on the bracket 6, so as to fixedly connect the fixed shaft 4 and the dividing funnel 2; for another example, the fixed shaft 4 may be a special shaft that can be directly and fixedly connected to the inside of the reduction funnel 2.
In order to collect the sample material in staying the kind ware 3 smoothly, design into the inverted cone shape funnel structure with staying kind ware 3, install division funnel 2 in the fill intracavity of staying kind ware 3, the main aspects opening of staying kind ware 3 is connected with the main aspects opening of division funnel 2, this department's connected mode can be connected or indirect connection for direct contact, so set up, can make sample material directly fall into the fill intracavity of staying kind ware 3 through the blanking hole 201 of division funnel 2, and the interior inverted cone shape face downstream of following staying kind ware 3, the automatic gathering is in the bottom of staying kind ware 3, so that take out required sample material. In addition, the large end opening of the sample retention device 3 can be connected with the large end opening of the feeding bin 5, and the connection mode can be direct contact connection or indirect connection.
In order to more conveniently take out the sample collected at the bottom of the sample retaining unit 3, a sample retaining port 301 is provided at the bottom of the sample retaining unit 3, so that the sample in the sample retaining unit 3 is automatically taken out from the sample retaining port 301.
Further, a spiral sample reserving channel leading to the sample reserving port 301 may be provided inside the sample reserving unit 3.
In the above embodiment, in the falling process of the sample in the falling hole 201 of the reduction funnel 2, in order to avoid the generation of the dust, the diameter size of the large end opening of the sample retention device 3 is greater than or equal to the diameter size of the large end opening of the reduction funnel 2. So set up, can arrange shrinkage funnel 2 in the cavity of staying the appearance ware 3 completely, the produced raise dust of sample material at the whereabouts in-process of blanking hole 201 is blockked by the inner wall of staying appearance ware 3 to prevent during the raise dust reveals the outside air, avoid environmental pollution, do benefit to the environmental protection.
In addition, in the above embodiment, the large end opening of the sample retention device 3 is in contact connection with the large end opening of the feeding bin 5, that is, the sample retention device 3 and the feeding bin 5 wrap other parts of the sample splitter therein, so as to enhance the overall structure of the whole sample splitter.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A sample preparation division device is characterized by comprising a distributing device, a division funnel and a sample reserving device from top to bottom in sequence;
the distributing device comprises a distributing device body, the peripheral surface of which is a conical surface, a plurality of flow guide channels are arranged on the peripheral surface of the distributing device body, and the flow guide channels are obliquely arranged from top to bottom and have the same oblique direction; the distributing device body is sleeved on a vertically arranged fixed shaft in a hollow mode, the fixed shaft is fixedly connected with the division funnel, and the fixed shaft and the division funnel are coaxial;
the division funnel is of an inverted cone structure, and blanking holes are formed in the side wall of the division funnel.
2. The sampling splitter according to claim 1, wherein a plurality of vanes are provided on the outer peripheral surface of the distributor body, and the flow guide channel is formed by the area between two adjacent vanes and the outer peripheral surface of the distributor body.
3. The sample preparation splitter as claimed in claim 2, further comprising a feeding bin, wherein the distributor is located in the feeding bin, the feeding bin is provided with a feeding port, and the feeding port is located above the distributor.
4. A sample preparation riffler according to claim 3 wherein the feed bin is of a conical shell configuration, the large end opening of the feed bin being connected to the large end opening of the riffler funnel.
5. The specimen preparation splitter of claim 4 wherein the feed bin has a large end opening diameter equal to or less than the large end opening diameter of the splitter funnel.
6. A sample preparation riffler according to any one of claims 1 to 5, wherein an opening adjusting member for adjusting the opening degree of the blanking hole is provided on the side wall of the riffler.
7. The specimen preparation splitter of claim 1, wherein a specimen discarding port is provided at a bottom of the splitting funnel, and the specimen discarding port protrudes out of the specimen reserving device.
8. A sample preparation splitter according to claim 7, wherein a support is fixed to the inside of the splitting funnel, and the fixing shaft is fixed to the support.
9. The sampling splitter according to claim 8, wherein the sample holder is an inverted cone-shaped funnel structure, the splitting funnel is located in the cavity of the sample holder, and the large end opening of the splitting funnel is connected with the large end opening of the sample holder.
10. The specimen preparation splitter according to claim 9, wherein the diameter of the large end opening of the specimen retention device is greater than or equal to the diameter of the large end opening of the splitting funnel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510207889.5A CN104897440B (en) | 2015-04-28 | 2015-04-28 | Sample preparation reduction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510207889.5A CN104897440B (en) | 2015-04-28 | 2015-04-28 | Sample preparation reduction device |
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| Publication Number | Publication Date |
|---|---|
| CN104897440A true CN104897440A (en) | 2015-09-09 |
| CN104897440B CN104897440B (en) | 2017-09-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510207889.5A Active CN104897440B (en) | 2015-04-28 | 2015-04-28 | Sample preparation reduction device |
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| CN (1) | CN104897440B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106525480A (en) * | 2016-11-10 | 2017-03-22 | 长沙开元仪器股份有限公司 | Splitting machine |
| CN111693340A (en) * | 2020-07-24 | 2020-09-22 | 昆明理工大学 | Rotary conical sampling device and method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106525480A (en) * | 2016-11-10 | 2017-03-22 | 长沙开元仪器股份有限公司 | Splitting machine |
| CN106525480B (en) * | 2016-11-10 | 2023-10-20 | 长沙开元仪器有限公司 | Dividing machine |
| CN111693340A (en) * | 2020-07-24 | 2020-09-22 | 昆明理工大学 | Rotary conical sampling device and method |
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| Publication number | Publication date |
|---|---|
| CN104897440B (en) | 2017-09-22 |
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