CN111638097A

CN111638097A - Dry-type material mixing division sampling equipment

Info

Publication number: CN111638097A
Application number: CN202010500028.7A
Authority: CN
Inventors: 王亚运; 宋磊; 王传龙; 郭素红; 于传兵; 康金星; 王鑫; 刘志国
Original assignee: China ENFI Engineering Corp
Current assignee: China Metallurgical Industry Co., Ltd; China ENFI Engineering Corp
Priority date: 2020-06-04
Filing date: 2020-06-04
Publication date: 2020-09-08

Abstract

The invention discloses dry material mixing and sampling equipment which comprises a support, a storage device, a stirring device, a sample mixing device, a distribution device and a material containing device, wherein the storage device is arranged on the support and is provided with an openable and closable discharge hole, the stirring device is rotatably arranged on the storage device and is used for stirring dry materials in the storage device, the sample mixing device is arranged in the storage device and is used for uniformly mixing the dry materials in the storage device, the distribution device is arranged on the support and is used for receiving the dry materials discharged from the discharge hole of the storage device, the distribution device is provided with a plurality of distribution holes, the material containing device is arranged on the support and is provided with a plurality of material containing cavities, and the plurality of material containing cavities are suitable for respectively receiving the dry materials discharged from the plurality of distribution holes. The dry-type material mixing division sampling equipment provided by the embodiment of the invention can realize at least two operations of mixing, division and sampling, and is accurate, reliable, rapid and convenient.

Description

Dry-type material mixing division sampling equipment

Technical Field

The invention relates to the technical field of dry material production monitoring and quality control, in particular to dry material mixing, dividing and sampling equipment.

Background

In the related technology, the mixing, division and sampling of the dry fine-grained materials are carried out step by step, and all the operations are manually completed, so that the operation is more complicated, and the operation process is easy to generate larger errors.

Disclosure of Invention

The present invention is directed to solving, at least to some extent, one of the technical problems in the related art.

Therefore, the invention provides the dry-type material mixing and division sampling equipment which can realize at least two operations of mixing, division and sampling, and is accurate, reliable, rapid and convenient.

The dry-type material mixing, dividing and sampling device comprises a support; the hopper is arranged on the support and provided with an openable and closable discharge hole, and the hopper is suitable for containing dry materials; a stirring device rotatably mounted on the hopper for stirring dry materials in the hopper; the sample mixing device is arranged in the stocker and is used for uniformly mixing the dry materials in the stocker; a distribution device provided on the support for receiving dry material discharged from the hopper outlet, the distribution device having a plurality of distribution ports; the material containing device is arranged on the support and is provided with a plurality of material containing cavities, and the material containing cavities are suitable for respectively receiving the dry materials discharged from the distribution ports.

According to the dry-type material mixing, dividing and sampling equipment provided by the embodiment of the invention, the dry-type material is uniformly mixed and stirred by the stirring device and the sample mixing device, and the equipment can realize at least two operations of mixing, dividing and sampling, and is accurate, reliable, rapid and convenient.

In some embodiments, the sample mixing device comprises a first sample mixing part and a second sample mixing part, the first sample mixing part and the second sample mixing part are rotatably arranged in the container and are arranged at intervals in the up-down direction, the first sample mixing part is suitable for rotating in a first direction, and the second sample mixing part is suitable for rotating in a direction opposite to the first direction.

In some embodiments, the first sample mixing member is positioned above the second sample mixing member, the second sample mixing member having a maximum cross-sectional area greater than a maximum cross-sectional area of the first sample mixing member.

In some embodiments, the first sample mixing member is a right circular cone member and the second sample mixing member is an inverted circular truncated cone member.

In some embodiments, the outer circumferential surface of the first sample mixing member is provided with a plurality of first baffle plates arranged at intervals in the circumferential direction of the first sample mixing member, and the outer circumferential surface of the second sample mixing member is provided with a plurality of second baffle plates arranged at intervals in the circumferential direction of the second sample mixing member.

In some embodiments, each of the first sample mixing member and the second sample mixing member is a plurality of sample mixing members, and the plurality of first sample mixing members and the plurality of second sample mixing members are alternately arranged in an up-down direction.

In some embodiments, the stirring device comprises a spiral rod, and the spiral rod penetrates through the sample mixing device in the up-down direction and is connected with the sample mixing device.

In some embodiments, the dry material blending, dividing and sampling device further comprises a driving device, the driving device is arranged outside the material storage device, and one end of the screw rod extends out of the material storage device and is connected with the driving device.

In some embodiments, the dispensing apparatus comprises a multi-stage dispenser comprising a level 1 dispenser, a level 2 dispenser, … … level n-1 dispenser, a level n dispenser, n being a natural number equal to or greater than 2, the level n-1 dispenser for dispensing dry material into a plurality of the level n dispensers, each of the level n dispensers for dispensing dry material into at least two of the holding chambers of the holding apparatus.

In some embodiments, the multi-stage dispenser comprises a 1 st dispenser, a 2 nd dispenser, a 3 rd dispenser and a 4 th dispenser, the 1 st dispenser corresponding to two of the 2 nd dispensers, each of the 2 nd dispensers corresponding to two of the 3 rd dispensers, each of the 3 rd dispensers corresponding to two of the 4 th dispensers, each of the 4 th dispensers corresponding to two of the holding chambers.

In some embodiments, the dry feed has a size fraction of less than 3 mm.

In some embodiments, the dry material mixing and dividing sampling device further comprises a feeding device for supplying dry materials into the storage container.

Drawings

Fig. 1 is a schematic structural diagram of a dry material mixing division sampling device according to an embodiment of the present invention.

Fig. 2 is a top view of the first sample mixing member of fig. 1.

Fig. 3 is a top view of the second sample mixing member of fig. 1.

Fig. 4 is a top view of the dispensing device of fig. 1.

Reference numerals:

the device comprises a support 1, a hopper 2, a discharge port 21, an inner shell 22, an outer shell 23, a stirring device 3, a screw rod 31, a sample mixing device 4, a first sample mixing part 41, a second sample mixing part 42, a first baffle 411, a second baffle 421, a distribution device 5 and a distribution port 55; a first distribution area 51, a second distribution area 52, a third distribution area 53, a fourth distribution area 54, a 1 st distributor 501, a 2 nd distributor 502, a 3 rd distributor 503, a 4 th distributor 504, a material containing device 6, a material containing cavity 61, a driving device 7, a feeding device 8 and a control device 9.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

As shown in fig. 1 to 4, the dry material mixing, shrinkage and sampling device according to the embodiment of the invention comprises a support 1, a material storage 2, a stirring device 3, a sample mixing device 4, a distribution device 5 and a material containing device 6.

The hopper 2 is provided on the support 1 and has an openable and closable outlet 21, the hopper 2 being adapted to contain dry material therein. As shown in fig. 1, the hopper 2 is mounted on the support 1, the bottom of the hopper 2 is a cone protruding downwards, and a discharge hole 21 is arranged at the conical point of the cone.

The stirring device 3 is rotatably installed on the hopper 2 for stirring the dry materials in the hopper 2. As shown in fig. 1, a through hole is provided in the top of the stocker 2, the stirring device 3 is inserted into the stocker 2 through the through hole, and the stirring device 3 is connected to the stocker 2.

The sample mixing device 4 is arranged in the storage device 2 and is used for uniformly mixing the dry materials in the storage device 2.

A distribution device 5 is provided on the support 1 for receiving the dry material discharged from the discharge port 21 of the hopper 2, the distribution device 5 having a plurality of distribution ports 55, the distribution ports 55 being adapted to discharge the dry material within the distribution device 5.

The material containing device 6 is arranged on the support 1 and has a plurality of material containing cavities 61, and the material containing cavities 61 are suitable for respectively receiving the dry materials discharged from the distribution ports 55.

In some embodiments, the sample mixing device 4 includes a first sample mixing member 41 and a second sample mixing member 42, the first sample mixing member 41 and the second sample mixing member 42 are rotatably provided in the stocker 2 and are arranged at intervals in the up-down direction, the first sample mixing member 41 is adapted to rotate in a first direction, and the second sample mixing member 42 is adapted to rotate in a direction opposite to the first direction.

As shown in fig. 1, the first mixing piece 41 and the second mixing piece 42 are both located inside the stocker 2, and both the first mixing piece 41 and the second mixing piece 42 are rotatable about their central axes, and the rotation directions of the second mixing piece 42 and the first mixing piece 41 are opposite to each other, so as to enhance the mixing effect.

In some embodiments, as shown in fig. 1, the first sample mixing part 41 is positioned above the second sample mixing part 42, and the maximum cross-sectional area of the second sample mixing part 42 is larger than that of the first sample mixing part 41, so as to mix uniformly

In some embodiments, as shown in fig. 1, the first sample mixing member 41 is a right circular cone member and the second sample mixing member 42 is a rounded frustum member.

In some embodiments, the outer circumferential surface of the first sample mixing member 41 is provided with a plurality of first baffle plates 411 arranged at intervals in the circumferential direction of the first sample mixing member 41, and the outer circumferential surface of the second sample mixing member 42 is provided with a plurality of second baffle plates 421 arranged at intervals in the circumferential direction of the second sample mixing member.

As shown in fig. 2, the outer peripheral profile of the cross section of the first sample mixing member 41 is circular, one end of the plurality of first baffle plates 41 converges at a conical point of the first sample mixing member 41, the other end of the plurality of first baffle plates 411 extends to the bottom of the first sample mixing member 41, and the plurality of first baffle plates 411 are arranged at intervals along the circumferential direction of the first sample mixing member 41 and equally divide the area of the outer peripheral surface of the first sample mixing member 41.

As shown in fig. 3, the outer peripheral profile of the cross section of the second sample mixing member 42 is a circular ring, the second sample mixing member 42 includes a first surface and a second surface arranged at intervals in the up-down direction and an outer peripheral surface connecting the first surface and the second surface, a plurality of second baffle plates 421 are provided on the outer peripheral surface of the second sample mixing member 42, one end surface of each second baffle plate 421 is flush with the first surface of the second sample mixing member 42, and the other end surface of each second baffle plate 421 is flush with the second surface of the second sample mixing member 42.

The plurality of second baffle plates 421 are arranged at intervals in the circumferential direction of the second sample mixing member 42, and equally divide the area of the outer circumferential surface of the second sample mixing member 42. Thus, the present application can further improve the mixing uniformity by providing the first baffle 411 and the second baffle 421.

In some embodiments, each of the first sample mixing member 41 and the second sample mixing member 42 is provided in plurality, and the plurality of first sample mixing members 41 and the plurality of second sample mixing members 42 are alternately arranged in the up-down direction. As shown in fig. 1, the first sample mixing members 41 and the second sample mixing members 42 are alternately arranged one by one. It is to be understood that the present application is not limited thereto, for example, at least two first sample mixing members 41 are grouped, at least two second sample mixing members 42 are grouped, and a group of first sample mixing members 41 and a group of second sample mixing members 42 are alternately arranged one by one.

In some embodiments, the stirring device 3 includes a screw rod 31, and the screw rod 31 extends through the sample mixing device 4 in the up-down direction and is connected to the sample mixing device 4.

As shown in fig. 1, the screw 31 penetrates the first sample mixing member 41 in the vertical direction and is connected thereto, so that the stirring device 3 rotates and drives the first sample mixing member 41 to rotate.

In some embodiments, the dry material mixing, dividing and sampling device further comprises a driving device 7, the driving device 7 is arranged outside the material storage device 2, and one end of the screw rod 31 extends out of the material storage device 2 and is connected with the driving device 7.

As shown in fig. 1, a screw 31 extends into the hopper 2 from the top of the hopper 2. In particular, the depth of the screw 31 projecting into the hopper 2 is adjustable.

In some embodiments, dispensing apparatus 5 comprises a multi-stage dispenser comprising a level 1 dispenser 501, a level 2 dispenser 502, … …, a level n-1 dispenser, a level n dispenser, n being a natural number greater than or equal to 2, the level n-1 dispenser for dispensing dry material into a plurality of level n dispensers, each level n dispenser for dispensing dry material into at least two of the material holding chambers 61 of the material holding apparatus. Therefore, the division effect is further improved through a multi-stage distribution mode.

In some embodiments, the multi-stage dispenser comprises a 1 st dispenser 501, a 2 nd dispenser 502, a 3 rd dispenser 503 and a 4 th dispenser 504, the 1 st dispenser 501 corresponding to two 2 nd dispensers 502, each 2 nd dispenser 502 corresponding to two 3 rd dispensers 503, each 3 rd dispenser 503 corresponding to two 4 th dispensers 504, and each 4 th dispenser 504 corresponding to two holding chambers 61.

As shown in fig. 1, the multi-stage distributors are arranged in a layered manner inside the support 1, and include 1

st stage distributor

501, 2

nd stage distributors

502, 4

rd stage distributors

503 and 8 th stage distributors 504 from top to bottom. Each distributor is provided with 2 distribution openings 55 and the inlet end of each lower distributor is located below one distribution opening 55 of the upper distributor.

The number of the material containing cavities 61 is 16, 16 material containing cavities 61 are arranged below 8 level 4 distributors 504, and specifically, each material containing cavity 61 is correspondingly arranged below a distribution opening 55 of one level 4 distributor 504.

In some embodiments, the dry feed has a size fraction of less than 3 mm. Therefore, the method is suitable for uniformly mixing, dividing and sampling dry fine-fraction materials.

In some embodiments, the dry material mixing and sampling device further comprises a supply device 8, and the supply device 8 is used for supplying dry materials into the material storage device 2.

As shown in fig. 1, the supply means 8 is provided on the top of the hopper 2, an upper mouth of the supply means 8 is positioned outside the hopper 2, a lower mouth of the supply means 8 is positioned inside the hopper 2, and the diameter of the upper mouth is larger than that of the lower mouth. The dry material passes through the supply device 8 and falls onto the first sample mixing member 41.

A dry material mixing and division sampling apparatus according to some embodiments of the present invention will be described with reference to fig. 1 to 4. The equipment comprises a support 1, a stocker 2, a stirring device 3, a sample mixing device 4, a distribution device 5, a material containing device 6, a driving device 7, a feeding device 8 and a control device 9.

The support 1 comprises an upper support plate 11 and a lower support 12, wherein the upper end of the lower support 12 is connected with the lower surface of the upper support plate 11, and the lower end of the lower support 12 is arranged on the ground or a platform. The top of the upper support plate 11 is provided with a through hole.

The hopper 2 includes an inner casing 22 and an outer casing 23, the inner casing 22 and the outer casing 23 being spaced apart in a radial direction within the hopper 2, and the inner casing 22 being located within the outer casing 23, the inner casing 22 being rotatable along a central axis of the inner casing 22. The bottom of the material storage device 2 is a cone which protrudes downwards, and a discharge hole 21 is arranged at the conical point of the cone. The bottom of the hopper 2 is extended into the lower frame 12 through a through hole at the top of the upper support plate 11, and the outer casing 23 of the hopper 2 is connected to the upper support plate 11.

The feeder device 8 is provided at the top of the hopper 2, the inlet of the feeder device 8 is located outside the hopper 2, the outlet of the feeder device 8 is located inside the hopper 2, and the diameter of the upper mouth is larger than the diameter of the lower mouth.

The stirring device 3 includes a screw 31, and a through hole is provided in the top surface of the hopper 2, and the screw 31 is inserted into the hopper 2 through the through hole. The screw 31 is rotatable with respect to the hopper 2

The sample mixing device 4 includes a plurality of first sample mixing members 41 and a plurality of second sample mixing members 42, the maximum cross-sectional area of the second sample mixing members 42 is larger than the maximum cross-sectional area of the first sample mixing members 41, and the plurality of first sample mixing members 41 and the plurality of second sample mixing members 42 are arranged alternately and at intervals in the up-down direction. The first sample mixing part 41 is a right conical part, the second sample mixing part 42 is an inverted circular truncated cone part, the screw rod 31 penetrates through the first sample mixing part 41 and the second sample mixing part 42, and the screw rod 31 is connected with the first sample mixing part 41 to drive the first sample mixing part 41 to rotate together. The second mixing member 42 is coupled to an inner circumferential surface of the inner casing 22 of the hopper 2 to rotate together with the inner casing 22 of the hopper 2, and a rotation direction of the second mixing member 42 is opposite to a rotation direction of the first mixing member 41.

The outer peripheral surface of the first sample mixing member 41 is provided with a plurality of first baffle plates 41 arranged at intervals in the circumferential direction thereof to equally divide the area of the outer peripheral surface of the first sample mixing member 41.

The outer peripheral surface of the second sample mixing member 42 is provided with a plurality of second baffles 421 arranged at intervals along the circumferential direction thereof and equally divides the area of the outer peripheral surface of the first sample mixing member 41.

The drive means 7 are located outside the hopper 2, the drive means 7 being connected to control means 9, the control means 9 being adapted to open or close the drive means 7. The upper end of the screw 31 protrudes out of the hopper 2 and is connected to the driving means 7 to drive the screw 31 to rotate by the driving means 7.

The distribution device 5 comprises a multi-stage distributor which is arranged in a layered manner inside the support 1 and comprises 1 grade-1

distributor

501, 2 grade-2

distributors

502, 4 grade-3

distributors

503 and 8 grade-4 distributors 504 from top to bottom. Each distributor is provided with 2 distribution openings 55 and the inlet end of each lower distributor is located below one distribution opening 55 of the upper distributor.

The material containing device 6 comprises a plurality of material containing cavities 61, specifically, the number of the material containing cavities 61 is 16, 16 material containing cavities 61 are arranged below 8 level 4 distributors 504, and each material containing cavity 61 is correspondingly arranged below a distribution opening 55 of one level 4 distributor 504.

Referring to fig. 1, the specific implementation process of the dry material mixing, dividing and sampling device according to the embodiment of the invention is as follows:

(1) feeding dry fine fraction materials smaller than 2-3mm into the stocker 2 from the feeding device 8, starting the driving device 7, driving the screw rod 31 to rotate by the driving device 7, so as to rotate the first sample mixing member 41, simultaneously driving the inner shell 22 to rotate by the driving device 7, so as to rotate the second sample mixing member 42, wherein the rotation directions of the first sample mixing member 41 and the second sample mixing member 42 are opposite, and the rotation speed is adjusted to be proper.

(2) After the materials are overturned and mixed evenly in a reciprocating manner by the first sample mixing part 41 and the second sample mixing part 42, the materials are scattered to the discharge port 21, and the materials flow out of the discharge port 21 and enter the distribution device 5.

(3) The uniformly mixed materials enter the distribution devices 5, each distribution device 5 uniformly divides the materials into two parts, and the materials are continuously fed into the next distribution device 5 to be continuously and uniformly divided until the division operation is finished.

(4) After the division operation is completed, the material is divided into 16 parts on average and distributed in the material containing device 6, and one part is randomly selected as a sampling sample which is representative.

(5) Referring to fig. 4, the schematic diagram of the distribution device 5 is shown, and the division operation is based on the principle of the quartering method, for example, the distribution device 5 is equally divided into four areas, such as a first distribution area 51, a second distribution area 52, a third distribution area 53 and a fourth distribution area 54 in fig. 4, the materials of the first distribution area 51 and the third distribution area 53 are mixed and then the subsequent division operation is performed, and the materials of the second distribution area 52 and the fourth distribution area 54 are mixed and then the subsequent division operation is performed until the division operation is completed.

(6) The material containing device 6 comprises 16 material containing cavities 61, can averagely divide dry fine-grained materials into 2 parts, 4 parts, 8 parts and 16 parts, and can adjust the division parts of the materials according to actual requirements.

(7) One of the 16 storage devices was randomly selected as a sample, and the sample was representative.

(8) The control device 9 is connected with the driving device 7, the driving device 7 is connected with the stirring device 3 and the material storage device 2, and the control device 9 can adjust the rotating speed and the rotating direction of the inner shell 22 of the stirring device 3 and the material storage device 2 through the driving device 7.

(9) The method can complete mixing-division operation, mixing-sampling operation and mixing-division-sampling operation.

In the description of the present invention, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims

1. The utility model provides a sampling equipment is divided to dry-type material mixing shrinkage, its characterized in that includes:

a support;

the hopper is arranged on the support and provided with an openable and closable discharge hole, and the hopper is suitable for containing dry materials;

a stirring device rotatably mounted on the hopper for stirring dry materials in the hopper;

the sample mixing device is arranged in the stocker and is used for uniformly mixing the dry materials in the stocker;

a distribution device provided on the support for receiving dry material discharged from the hopper outlet, the distribution device having a plurality of distribution ports;

the material containing device is arranged on the support and is provided with a plurality of material containing cavities, and the material containing cavities are suitable for respectively receiving the dry materials discharged from the distribution ports.

2. The dry material mixing, dividing and sampling device according to claim 1, wherein the sample mixing device comprises a first sample mixing part and a second sample mixing part, the first sample mixing part and the second sample mixing part are rotatably arranged in the material storage device and are arranged at intervals in the vertical direction, the first sample mixing part is suitable for rotating in a first direction, and the second sample mixing part is suitable for rotating in a direction opposite to the first direction.

3. The dry material mixing, dividing and sampling device according to claim 2, wherein the first sample mixing part is located above the second sample mixing part, and the maximum cross-sectional area of the second sample mixing part is larger than that of the first sample mixing part.

4. The dry material mixing, dividing and sampling device as claimed in claim 2, wherein the first sample mixing part is a right circular cone and the second sample mixing part is an inverted circular truncated cone.

5. The dry-type material mixing, dividing and sampling device as claimed in claim 4, wherein the first sample mixing part is provided with a plurality of first baffles arranged at intervals along the circumferential direction of the first sample mixing part on the outer circumferential surface, and the second sample mixing part is provided with a plurality of second baffles arranged at intervals along the circumferential direction of the second sample mixing part on the outer circumferential surface.

6. The dry material mixing, dividing and sampling device according to claim 2, wherein the first sample mixing part and the second sample mixing part are both multiple, and the multiple first sample mixing parts and the multiple second sample mixing parts are alternately arranged in the vertical direction.

7. The dry material mixing, shrinkage and sampling equipment as claimed in any one of claims 1 to 6, wherein the stirring device comprises a screw rod, and the screw rod penetrates through the sample mixing device in the up-down direction and is connected with the sample mixing device.

8. The dry material mixing, dividing and sampling device as claimed in claim 7, further comprising a driving device, wherein the driving device is arranged outside the material storage device, and one end of the screw rod extends out of the material storage device and is connected with the driving device.

9. The dry material mixing and dividing sampling device as claimed in claim 1, wherein the distribution device comprises a multi-stage distributor, the multi-stage distributor comprises a 1 st stage distributor, a 2 nd stage distributor, … … n-1 st stage distributor and an nth stage distributor, n is a natural number greater than or equal to 2, the n-1 st stage distributor is used for distributing dry materials into a plurality of the nth stage distributors, and each nth stage distributor is used for distributing dry materials into at least two material containing cavities of the material containing device.

10. The dry matter mixing and dividing sampling device as claimed in claim 9, wherein the multi-stage distributor comprises a 1 st distributor, a 2 nd distributor, a 3 rd distributor and a 4 th distributor, the 1 st distributor corresponds to two of the 2 nd distributors, each of the 2 nd distributors corresponds to two of the 3 rd distributors, each of the 3 rd distributors corresponds to two of the 4 th distributors, and each of the 4 th distributors corresponds to two of the material containing chambers.

11. The dry material mixing, shrinkage and sampling device as claimed in any one of claims 1 to 6, wherein the dry material has a size fraction of less than 3 mm.

12. A dry material mixing, shrinkage and sampling apparatus as claimed in any one of claims 1 to 6, further comprising a supply means for supplying dry material into the hopper.