AU2019201710B2

AU2019201710B2 - Homogenizing and equalizing discharge hopper and fixed mass division machine

Info

Publication number: AU2019201710B2
Application number: AU2019201710A
Authority: AU
Inventors: Haijian Shao; Ru YIN; Hua Zhong; Li Zhu
Original assignee: Asm Tech Pty Ltd
Current assignee: Asm Technology Pty Ltd
Priority date: 2019-03-13
Filing date: 2019-03-13
Publication date: 2023-08-10
Anticipated expiration: 2039-03-13
Also published as: AU2019201710A1

Abstract

The present disclosure relates to a homogenizing and equalizing discharge hopper and a fixed mass division machine and belongs to the technical field of testing sample preparation equipment. A homogenizing motor is supported on the middle part of a cylindrical barrel located on the upper part of a storage hopper of the discharge hopper, and an output shaft of the homogenizing motor is in transmission connection with a homogenizer; the homogenizer is formed by a conical spiral pipe; a variable-diameter gate unit is mounted on a base of the storage hopper, the variable-diameter gate unit comprises a discharge disc, a group of variable-diameter blades and a variable-diameter driving gear; locating pins mounted on the discharge disc in an articulated manner extend out of the upper surfaces of main leaf bodies of the variable-diameter blades, and transferring pins extend out of the lower ends of the main leaf bodies; variable-diameter curved grooves and arc grooves are formed in the variable diameter driving gear, cam pairs are formed by the variable-diameter curved grooves and the transferring pins, and the arc grooves are kept concentric with the discharge tray through centering pins; external teeth of the variable-diameter driving gear are in transmission connection with a gate motor unit; and an equalizing slide cone with a tip directly facing the center of the variable-diameter gate unit is mounted in the base, so that an annular homogenizing discharge opening is formed. According to the homogenizing and equalizing discharge hopper, after samples are uniformly stirred and mixed, the situation that section flows are uniformly discharged is guaranteed. FIG.1

Description

FIG.1

HOMOGENIZING AND EQUALIZING DISCHARGE HOPPER AND FIXED MASS DIVISION MACHINE FIELD OF TECHNOLOGY

[0001] The present invention relates to a homogenizing and equalizing discharge hopper applied to material samples in metallurgy, coal, electricity generation, port commodity inspection and other industries and a division machine adopting the homogenizing and equalizing discharge hopper, belonging to the technical field of testing sampling equipment. BACKGROUND TECHNOLOGY

[00021 "Division" is a process of achieving the mass detection and inspection of needed materials by randomly reducing mass under the condition of invariable granularity, the keys of "supplying fixed mass division materials" are sufficient and uniform mixing of the materials and the section of an outlet (flows on points of the outlet are stable) with material equalization and stability.

[00031 As far as the applicant knows, the conventional "division" equipment is designed actually on the basis of the "GBT 1997-1989 adoption and preparation of coke samples", only meets the requirement for "being more than needed division quantity" and is lack of a conception of "division" accuracy of the new "GBT 1997-2008 adoption and preparation of coke samples" standard, thereby having no specific requirement on sufficient and uniform mixing of the materials and material supply of a "division" system.

[0004] Especially when the samples offering division are nonuniform in granular size, weight, water ratio and the like, the materials without being sufficiently and uniformly mixed and the materials from the discharge opening are sporadically, unequally and nonuniformly discharged in actual use of the section, and the accuracy of inspection results can be influenced. SUMMARY OF THE PRESENT DISCLOSURE

[0005] The present disclosure aims at providing the homogenizing and equalizing discharge hopper aiming at the defects of the prior art and providing the fixed mass division machine on the basis. The homogenizing and equalizing discharge hopper is controllable in mixing uniformity degree of the materials and achieves the adjustability of the section of the discharge opening, thereby ensuring that the flow of the section is equalized.

[0006] In order the achieve the aim, the basic technical scheme of the homogenizing and equalizing discharge hopper is as follows: The homogenizing and equalizing discharge hopper includes a storage hopper, wherein the storage hopper is formed by an upper cylindrical barrel and a lower conical barrel; a homogenizing motor is supported on the intermediate part of the upper cylindrical barrel through motor racks; a protective cap with a conical tip is arranged above the homogenizing motor; an output shaft of the homogenizing motor is in transmission connection with a homogenizer inserted into the bottom of the conical barrel; the homogenizer is formed by a conical spiral pipe which radially extends out of the upper part of a central shaft and is wound to the lower part of the central shaft along a conical spiral line; fins are arranged on the lower end of the central shaft; a variable-diameter gate unit located on the bottom outlet of the conical barrel is mounted on a base of the storage hopper. The variable-diameter gate unit includes a discharge disc, a group of variable-diameter blades and a variable-diameter driving gear, wherein a central discharge hole is formed in the discharge disc, the variable-diameter blades are arranged in a recess of the bottom surface of the discharge disc, and the variable-diameter driving gear is mounted below the discharge disc; main leaf bodies with inner edges enclosing a circular hole are located on the variable diameter blades; locating pins mounted on the discharge disc in an articulated manner extend out of the upper surfaces of main leaf bodies, and transferring pins extend out of the lower ends of the main leaf bodies; variable-diameter curved grooves and arc grooves are formed in the variable-diameter driving gear, cam pairs are formed by the variable-diameter curved grooves and the transferring pins, and the arc grooves are kept concentric with the discharge tray through centering pins; external teeth of the variable-diameter driving gear are in transmission connection with a gate motor unit; and an equalizing slide cone with a tip directly facing the center of the variable-diameter gate unit is mounted in the base, so that an annular homogenizing discharge opening is formed.

[0007] During work, after charging above the storage hopper is finished, the homogenizing motor is started to drive the homogenizer for stirring; after required set time is reached, the homogenizer is kept in a stirring state, and a discharge gate unit just as a camera shutter is gradually opened for uniform discharge. Because a specific uniform hopper-shaped discharge opening structure is arranged on the homogenizing and equalizing discharge hopper disclosed by the present disclosure, the homogenizer achieves ideal overturning and stirring effect during the rotation of the conical spiral pipe, and the blocking is prevented by dint of that granules are agitated by the fins in a blanking process. Thus, regardless of the granular size, weight and water ratio of divided incoming samples, the divided incoming samples can be uniformly stirred and mixed; a variable-diameter gate is gradually opened during discharge, the discharge radii of the uniformly mixed incoming samples are gradually enlarged, the discharge quantity is increased with the gradual enlargement of the discharge radii, the materials are kept being discharged from the section flows of a discharge gate all the time and fall on the tip of the equalizing slide cone which is axial with the discharge opening, and the materials slide in a uniform distribution manner to fall into a receiving container located at the lower side.

[0008] Further improvement of the homogenizing and equalizing discharge hopper is also as follows: A pair of the spiral fins are arranged on the lower end part of the homogenizer.

[0009] A recess in the shape of a regular polygon is formed in the bottom surface of the discharge disc, and the variable-diameter blades matched with edges in number are arranged in the recess.

[0010] The fixed mass division machine which adopts the homogenizing and equalizing discharge hopper also includes a petal-type fixed mass division device, wherein the petal-type fixed mass division device is arranged below the homogenizing and equalizing discharge hopper in a connecting manner through a vertical rack. The petal-type fixed mass division device includes an installation disc, mass fixing chutes and material rejecting chutes, wherein the installation disc is divided into a plurality of equant sectors by radial spokes according to division quantity ratio; the mass fixing chutes of which the lower ends communicate with mass fixing slide pipes are fixed at one sides of the circumferential directions of the sectors; the material rejecting chutes of which the lower ends communicate with material rejecting slide pipes are fixed at the other sides of the circumferential directions of the sectors; a rotatable necking disc driven by a built-in power source is supported in the center of the installation disc; a plurality of blades which respectively and partially shield the corresponding sectors are arranged on the necking disc; and the bottom surfaces of the blades are in the shape of partial sectors, the sections of the blades are in the shape of right triangles, and the right-angle sides of the right triangles are adjacent to the mass fixing chutes.

[0011] Further improvement of the fixed mass machine is also as follows: The radial spokes axially extend out of material blocking surfaces located at one sides of the material rejecting chutes.

[0012] The installation disc is divided into the plurality of equant sectors by the spokes which radially extend from a central tray to an outer ring disc.

[0013] A barrel-shaped circled ring matched with the outer ring disc in inner diameter is arranged on the necking disc.

[0014] The mass fixing chutes incline outwards and downwards.

[0015] During work, the power source can be regulated and controlled by the device according to the weighing conditions of the incoming samples to drive the necking disc to rotate at a certain angle, and the blades are located on proper shielding positions, so that the mass fixing chutes located on the equant sectors open at an opening degree which meet the requirement for division mass; then the incoming samples which are uniformly stirred and mixed in the homogenizing and equalizing discharge hopper uniformly fall into the equant sectors, the samples with needed mass are discharged through the corresponding mass fixing slide pipes from the mass fixing chutes, and other samples are discharged through the material rejecting slide pipes from the material rejecting chutes and become rejected samples. Thus, even if the samples are different in weight, the samples can be conveniently and correspondingly adjusted, so that the situation that needed fixed mass division samples can be acquired is guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present disclosure is further explained in combination with the accompanying drawings as follows:

[0017] Figure 1 is a solid structure diagram of the fixed mass division machine adopting the homogenizing and equalizing discharge hopper.

[00181 Figure 2 is a section structure diagram of Figure 1.

[00191 Figure 3 is a structure diagram of one embodiment of the present disclosure.

[0020] Figure 4 is a vertical view of Figure 3.

[0021] Figure 5 is a solid structure diagram of the variable-diameter gate unit as shown in Figure 3.

[0022] Figure 6 is a solid breakdown structure diagram of Figure 5.

[0023] Figure 7 is the petal-type fixed mass division device as shown in Figure 1. Figure 8 is an overlooking structure diagram of Figure 7.

[00241 Figure 9 is a solid structure diagram of the installation disc as shown in Figure 7.

[00251 Figure 10 is a solid structure diagram of the necking disc as shown in Figure 7.

[00261 Figure 11 is a partially enlarged solid structure diagram of Figure 7. DESCRIPTION OF THE EMBODIMENTS

[0027] Embodiment 1 The fixed mass division machine of the embodiment for a laboratory adopts the homogenizing and equalizing discharge hopper. As shown in Figure 1 and Figure 2, the basic structure of the fixed mass division machine includes the homogenizing and equalizing discharge hopper U and the petal-type fixed mass division device D, wherein the homogenizing and equalizing discharge hopper U is mounted on the vertical rack, and the petal-type fixed mass division device D is connected below the homogenizing and equalizing discharge hopper U.

[00281 Referring to Figure 3 and Figure 4, the structure of the homogenizing and equalizing discharge hopper is as follows: the storage hopper 3 is formed by the upper cylindrical barrel and the lower conical barrel, mounted on the vertical rack and used for storing granules with diameters less than CD 20, and the granules are stirred in the storage hopper 3; the homogenizing motor 2 is supported on the intermediate part of the upper cylindrical barrel through two beam-type motor racks 5; the protective cap 1 with a conical tip is arranged above the homogenizing motor 2, and the protective cap 1 is capable of obstructing small granule materials, so that a protective role is played on the homogenizing motor 2; the output shaft of the homogenizing motor 2 is in transmission connection with the homogenizer 6 through a coupler, and homogenizer 6 is inserted into the bottom of the conical barrel; the homogenizer 6 is formed by the conical spiral pipe 6-2 which radially extends out of the upper part of the central shaft 6-1 and is wound to the lower part of the central shaft 6-1 along the conical spiral line; regardless of the change of granule diameters and the gradation of successive charging, the small granule materials inside the storage hopper 3 can be sufficiently stirred and mixed through the conical spiral structure of the homogenizer 6; and a pair of the spiral fins are arranged on the lower end of the central shaft 6-1 of the homogenizer 6, and the spiral fins can prevent the blocking by stirring the granules in a blanking process.

[0029] The variable-diameter gate unit 9 located on the bottom outlet of the conical barrel is mounted on the dome-shaped base 10 of the storage hopper; the variable-diameter gate unit 9 is as shown in Figure 5, the central discharge hole of the discharge disc 9-1 located on the upper part of the variable-diameter gate unit 9 directly faces the outlet of the storage hopper, the hexagonal recess is formed in the bottom surface of the discharge disc 9-1, a group of six variable-diameter blades 9-2 are arranged in the hexagon recess, and the variable-diameter driving gear 9-3 is mounted below the discharge disc 9-1.

[0030] The variable-diameter blades 9-2 are as shown in Figure 6, inner edges mutually enclosing a circular hole are formed on the polygonal main leaf bodies 9-b, the locating pins 9-a mounted on the discharge disc 9-1 in an articulated manner extend out of the upper surfaces of the main leaf bodies 9-b, and the transferring pins 9-c extend out of the lower ends of the main leaf bodies 9-b; the variable-diameter curved grooves 9-e forming the cam pairs with the transferring pins 9-c are formed in the variable-diameter driving gear 9-3, thus when the variable-diameter driving gear 9-3 rotates, the variable-diameter movement of the discharge "circular hole" can be realized under the constraint of the variable-diameter curved grooves 9-e through the main leaf bodies 9-b. Besides, the arc grooves 9-d kept concentric with the discharge disc 9-1 through the centering pins 9-4 located on the discharge disc 9-1 is also formed in the variable-diameter driving gear 9-3, when the variable-diameter driving gear 9-3 rotates, the variable-diameter driving gear 9-3 and the discharge disc 9-1 are kept concentric all the time through the constraint relation of the centering pins 9-4 and the arc grooves 9-d; the external teeth of the variable-diameter driving gear 9-3 are in transmission connection with the gate motor unit 7 through a spiral gear pair; thus the size of a discharge section can be regulated and controlled through transferring as required under the driving of the gate motor unit 7; and the caliber of the discharge "circular hole" is "0" when the discharge "circular hole" is closed, the caliber is gradually enlarged from "0" to large in the opening process of the discharge "circular hole" till being slightly larger than the diameter of a pipe-like discharge opening formed in the lower end of the storage hopper, so that the situation that materials are centrally discharged all the time in a discharging process and fall in the uniform distribution manner along the tip of the equalizing slide cone is guaranteed.

[0031] The equalizing slide cone 8 with the tip directly facing the center of the variable diameter gate unit, namely the center of the discharge "circular hole", is mounted in the base 10, so that the annular homogenizing discharge opening is formed. After the variable-diameter gate unit is started through the gate motor unit, the sufficiently and uniformly mixed small granule materials fall on the conical surface of the equalizing slide cone 8 located just below the discharge "circular hole" from the hole section of the discharge "circular hole", slide along the conical surface in a uniform distribution manner and fall into the petal-type fixed mass division device D located at the lower side.

[0032] The concrete structure of the petal-type fixed mass division device is as shown in Figure 7 and Figure 8. Referring to Figure 9, the installation disc ' in the shape of a wheel disc is divided into seven equant sectors by the spokes 1-l' radially extending from the central tray 1-2' to the outer ring disc 1-3' according to the requirement for division quantity ratio of 1:2:4 (the embodiment takes aqueous samples of 1 kilogram, retained samples of 2 kilograms and real-time samples of 4 kilograms which are needed as examples), the outwards and downwards inclined mass fixing chutes 4' (similarly, cones inclined downwards towards the other positions of the bottoms of the mass fixing chutes as required) of which the lower ends communicate with the mass fixing slide pipes 6' are fixed below one sides of the circumferential directions of the sectors, the grouping connection relation of the mass fixing slide pipes 6' is set according to the division quantity ratio of 1:2:4, namely, the seven mass fixing chutes 4' located on the seven equant sectors are divided into three groups which are respectively set as corresponding one mass fixing slide pipe, two mass fixing slide pipes and four mass fixing slide pipes, one mass fixing chute communicates with the one mass fixing slide pipe, two mass fixing chutes communicate with the two mass fixing slide pipes after being connected in parallel, and other four mass fixing chutes communicate with the four mass fixing slide pipes after being connected in parallel; the radial spokes 1-1' axially extend out of the material blocking surfaces 1-4' located at one sides of the material rejecting chutes 2' (referring to Figure 11); and the rejected samples or samples which are subjected to mass fixation are transmitted to respective collection positions through the material rejecting slide pipes 5' and the mass fixing slide pipes 6' respectively.

[00331 The material rejecting chutes 2' of which the lower ends communicate with the material rejecting slide pipes 5' are fixed at the other sides of the circumferential directions of the sectors; the rotatable necking disc 3' driven by a built-in motor 7' as the built-in power source is supported on the central tray 1-2' of the installation disc '; and the built-in motor 7' is controlled by a program-controlled circuit for weighing judgement.

[00341 The necking disc 3' is as shown in Figure 10. Seven blades 3-1' which respectively and partially shield the corresponding sectors are arranged between the barrel-shaped circled ring 3-2' of the necking disc 3' and the built-in motor 7' located in the center, the inner diameter of the barrel-shaped circled ring 3-2' is matched with the inner diameter of the outer ring disc 1-3' of the installation disc ', the bottom surfaces of the blades 3-1' are in the shape of partial sectors obtained by removing the positions adjacent to the circle centers of the sectors, the sections of the blades 3-l' are in the shape of right triangles, the vertical surfaces 3-4' formed by the right-angle sides of the right triangles are adjacent to the mass fixing chutes 4', and inclined surfaces 3-3' formed by the sloping sides of the right triangles are adjacent to the material rejecting chutes 2'. The situation that the incoming samples vertically fall without being disturbed is guaranteed through the vertical surfaces, and the rejected samples are transmitted into the material rejecting chutes 2' by passing through the inclined surfaces 3-3'.

[0035] When the complete machine works, firstly corresponding mixing and homogenizing time is set according to the situations of needed homogenized and mixed materials, then the materials are fed into the usable space of the storage hopper for one time or multiple times, the homogenizer is started to stir, and homogenization is realized through the rotation and overturning of the conical spiral pipe; after the stirring and the homogenization are finished, the discharge "circular hole" of the variable-diameter gate unit is gradually opened to maximum by operating and controlling the gate motor unit, and in the gradually increasing process of discharge quantity, the materials are uniformly discharged all the time from the section of the discharge opening, fall on the tip of the homogenizing slide cone and slide in the uniform distribution manner to fall into the division device located at the lower side; when the materials are fed, after the materials are weighed, the rotation direction and rotation angle of the necking disc are controlled according to the weighing conditions of the incoming samples by the program-controlled circuit; the initial position (such as a middle position) corresponding to the set weight (such as 10 kilograms) of a basic sample, of the necking disc, is taken as a standard reference value, when the weights of the incoming samples are more than (or less than) the standard reference value, the necking disc anticlockwise ( or clockwise) rotates at an angle, and the angle can be converted according to the proportion of the weight (such as 1 kilogram) of each sample divided under the condition of the standard reference value through corresponding sample supply or be determined according to experiments; and the seven blades located on the necking disc anticlockwise (or clockwise) rotate at the same time with the necking disc, openings of the mass fixing chutes are respectively reduced (or enlarged) through the blades, and meanwhile, the openings of the material rejecting chutes are equally enlarged (or reduced). Finally, the uniformly supplied incoming samples randomly and uniformly fall into the mass fixing chutes and the material rejecting chutes, and after the division is finished, needed aqueous samples of 1 kilogram, retained samples of 2 kilograms and analytical samples of 4 kilograms are obtained from the outlets of three groups of the mass fixing slide pipes.

[0036] According to tests, by adopting the fixed mass division machine of the embodiment, regardless of the granular size, weight and water ratio of the divided incoming samples, the divided incoming samples can be uniformly stirred and mixed; good adaptive capacity is achieved on the uncertainty of the weights of the divided incoming samples, regardless of the change of the weights in a specific range, one or multiple results of fixed mass division can be obtained through adjustment, and total division accuracy of the fixed mass division machine can completely meet the requirements of new national standard. Of course, if necessary, the results of constant proportion division are quite easy to obtain by adopting the fixed mass division machine.

[0037] It will be understood that the term "comprise" and any of its derivatives (eg comprises, comprising) as used in this specification is to be taken to be inclusive of features to which it refers, and is not meant to exclude the presence of any additional features unless otherwise stated or implied.

[00381 The reference to any prior art in this specification is not, and should not be taken as, an acknowledgement or any form of suggestion that such prior art forms part of the common general knowledge.

[0039] It will be appreciated by those skilled in the art that the invention is not restricted in its use to the particular application described. Neither is the present invention restricted in its preferred embodiment with regard to the particular elements and/or features described or depicted herein. It will be appreciated that various modifications can be made without departing from the principles of the invention. Therefore, the invention should be understood to include all such modifications in its scope.

Claims

CLAIMS 1. A homogenizing and equalizing discharge hopper comprises a storage hopper (3), wherein the storage hopper (3) is formed by an upper cylindrical barrel and a lower conical barrel; a homogenizing motor (2) is supported on the intermediate part of the upper cylindrical barrel through a motor rack (5); a protective cap (1) with a conic tip is arranged above the homogenizing motor (2); and an output shaft of the homogenizing motor (2) is in transmission connection with a homogenizer (6) inserted into the bottom of the conical barrel; the homogenizer (6) is formed by a conical spiral pipe (6-2) which radially extends out of the upper part of a central shaft (6-1) and is wound to the lower part of the central shaft (6-1) along a conical spiral line; fins are arranged on the lower end of the central shaft (6-1); a variable-diameter gate unit (9) located on the bottom outlet of the conical barrel is mounted on a base (10) of the storage hopper (3); the variable-diameter gate unit (9) comprises a discharge disc (9-1), a group of variable-diameter blades (9-2) and a variable-diameter driving gear (9-3), wherein a central discharge hole is formed in the discharge disc (9-1), the variable diameter blades (9-2) are arranged in a recess of the bottom surface of the discharge disc (9-1), and the variable-diameter driving gear (9-3) is mounted below the discharge disc (9-1); main leaf bodies (9-b) with inner edges enclosing a circular hole are located on the variable diameter blades (9-2); locating pins (9-a) mounted on the discharge disc (9-1) in an articulated manner extend out of the upper surfaces of main leaf bodies (9-b), and transferring pins (9-c) extend out of the lower ends of the main leaf bodies (9-b); variable-diameter curved grooves (9-e) and arc grooves (9-d) are formed in the variable-diameter driving gear (9-3), cam pairs are formed by the variable-diameter curved grooves (9-e) and the transferring pins (9-c), the arc grooves (9-d) are kept concentric with the discharge tray (9-1) through centering pins (9 4); external teeth of the variable-diameter driving gear (9-3) are in transmission connection with a gate motor unit (7); and an equalizing slide cone (8) with a tip directly facing the center of the variable-diameter gate unit (9) is mounted in the base (10), so that an annular homogenizing discharge opening is formed.
2. The homogenizing and equalizing discharge hopper according to claim 1, wherein a pair of helical fins are arranged on the lower end part of the homogenizer.
3. The homogenizing and equalizing discharge hopper according to claim 2, wherein a recess in the shape of a regular polygon is formed in the bottom surface of the discharge disc, and the variable-diameter blades matched with edges in number is arranged in the recess.
4. A fixed mass division machine adopting the homogenizing and equalizing discharge hopper according to any of claims 1 to 3, also comprising a petal-type fixed mass division device, wherein the petal-type fixed mass division device is arranged below the homogenizing and equalizing discharge hopper in a joining manner through a vertical rack; the petal-type fixed mass division device comprises an installation disc, mass fixing chutes and material rejecting chutes, wherein the installation disc is divided into a plurality of equant sectors by radial spokes according to division quantity ratio; the mass fixing chutes of which the lower ends communicate with mass fixing slide pipes are fixed at one sides of the circumferential directions of the sectors; the material rejecting chutes of which the lower ends communicate with material rejecting slide pipes are fixed at the other sides of the circumferential directions of the sectors; a rotatable necking disc driven by a built-in power source is supported in the center of the installation disc; a plurality of blades which respectively and partially shield the corresponding sectors are arranged on the necking disc; and the bottom surfaces of the blades are in the shape of partial sectors, the sections of the blades are in the shape of right triangles, and the right-angle sides of the right triangles are adjacent to the mass fixing chutes.
5. The fixed mass division machine according to claim 4, wherein the radial spokes axially extend out of material blocking surfaces located at one sides of the material rejecting chutes.
6. The fixed mass division machine according to claim 5, wherein the installation disc is divided into the plurality of equant sectors by the spokes which radially extend from a central tray to an outer ring disc.
7. The fixed mass division machine according to claim 6, wherein a barrel-shaped circled ring matched with the outer ring disc in inner diameter is arranged on the necking disc.
8. The petal-type fixed mass division device according to claim 7, wherein the mass fixing chutes incline outwards and downwards.