JPH0323339Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] This invention relates to a sample sieving device, and more specifically, sieving a crushed sample with a sieve;
The present invention relates to a sample sieving device that can continuously dispense samples.

[Prior art] In testing mineral resources in the earth's crust, ore, coal,
When measuring the content of iron, nonferrous metals, etc. contained in red mud, etc., or testing the pulverization state, a resource sample of a certain weight is pulverized under certain conditions, and the entire pulverized sample is divided into particles. There are ways to sieve depending on the size.

Conventionally, this type of sieving device was manufactured by Jikosho, for example.
There is one described in Publication No. 59-21899.

In this conventional technology, a box-shaped frame with an open top and front surface is placed on a roller, a left-right drive mechanism is connected, and one side of square sieves stacked inside the box-shaped frame is opened and closed. A horizontal movement sieve comprising a box-shaped frame with a slightly larger window hole corresponding to the opening, a cover plate capable of opening the window hole, and a chute located below the window hole fixed to the box-shaped frame. It is a device.

[Problem to be solved by the invention] The conventional technology described above performs sieving by horizontally vibrating the sieve, so when discharging the sample after sieving, the horizontal oscillation of the sieve is temporarily stopped. After opening the cover plate of the window hole in the sieve frame, the sieve is horizontally vibrated together with the frame again to discharge the sieved sample to the outside of the sieve, and the first problem is that it is extremely difficult to automate the sieving process. There is a point.

During sieving, the clogged sample that gets into the mesh of the sieve remains in the sieve and cannot be discharged. There is a second problem in that an error occurs in the particle size inspection result by the sum of the samples.

In addition, there is a third problem in that workability is poor because cleaning work is required to remove clogged samples from a plurality of sieves for the next particle size inspection.

Furthermore, in the cited example, the sample is sieved by horizontal vibration of the sieve together with its frame, so during sieving, the sample collides with the sieve frame due to its inertia and is broken or damaged. The fourth problem is that the grain size of the grain size is greatly impaired, making it impossible to obtain accurate grain size inspection results.

In order to eliminate each of the above-mentioned problems, this invention enables sieving and discharging to be performed continuously while vibrating the sieve up and down, thereby promoting automation of the sieving work and removing clogged samples from the sieve. The purpose is to eliminate this occurrence and to eliminate the collision of the sample against the sieve frame during sieving.

[Means for Solving the Problems] The purpose of the above-mentioned invention is to erect a plurality of columns on a first diaphragm that is installed flat on a base plate so that it can be vibrated vertically by a first vibrator. A first rail member is installed flatly on the support plate, a sieving part is formed by installing a sample holder flatly at the lower part of the support column, and a rotating shaft is installed on a support plate installed horizontally on the plurality of supports installed upright on the base plate. A rotary plate is installed horizontally through the rotary plate, and a cylinder for rotating the sieve and a bearing of a support shaft connected to the rotating shaft via a universal joint are attached to the rotary plate, and a sieve is attached to one end of the support shaft. Also, a dispensing operation unit having a sieve moving cylinder that horizontally rotates a rotary plate about the rotation axis, and a second vibrating plate disposed flatly on the base plate so as to be able to vibrate vertically with a second vibrator. A plurality of columns are erected on the top, and a second rail member is provided horizontally on each of these columns for transferring the sieve on the first rail member by movement, and it is possible to move up and down between each of the columns. This is achieved by providing a dispensing section with a hopper disposed in each of the dispensing sections.

[Function] The sieving device of this invention has a sieving section, a dispensing operation section, and a dispensing section, and each of the above sections is individually controlled by two vibrators that apply vertical vibrations to the sieving section and dispensing section. The sieve is moved from the sieving section to the dispensing section via the dispensing operation section while vertically vibrating, and the sieved large and small samples are received by the sample receiver and the sieved samples are taken out from the sieve. When a hit occurs, the sample can be discharged by inverting the sieve while vertically vibrating it.

[Example] Examples will be described with reference to the drawings.

First, the basic configuration of this invention is as shown in FIGS. 1, 2, and 3. A plurality of diaphragms are mounted on a first diaphragm 22, which is installed flatly on a base plate 13 so as to be able to vibrate vertically with a first vibrator 25. Supports 23 are erected and first rail members 24 are installed horizontally on each of these supports,
A sample receiver 8B is installed horizontally at the lower part of the support column 23 to constitute the sieving section 2.

A plurality of columns 31 are erected on the base plate 13.
As shown in FIG. 4, a rotary plate 34 is disposed flatly on a support plate 32 which is disposed flatly through a rotary shaft 33, and a cylinder 35 for rotating the sieve and its rotary shaft 3 are attached to this rotary plate 34.
3 is attached to a bearing 36 of a support shaft 76 connected via a flexible joint 39 made of a coil spring or rubber rod, and furthermore, a sieve 7 made of a brass cylinder or the like with a wire mesh stretched over it is attached to one end of the support shaft 76. The dispensing operation section 3 is constructed by providing a sieve moving cylinder 38 which is attached to rotate the rotating plate 34 in the horizontal direction about the rotating shaft 33.

Furthermore, a second vibrator 4 is mounted on the base plate 13.
A plurality of columns 43 are erected on the second diaphragm 42 which is installed horizontally so as to be able to vibrate vertically at 7, and each of these columns 43
A second rail member 44 is provided horizontally for transferring the sieve 7 on the first rail member 24, and is made of brass or plastic, and is arranged between each of the supports 43 so as to be movable up and down. A hopper 58 is provided to constitute the dispensing section 4.

It should be noted that each of the above-mentioned members is made of a strong material such as iron unless the material is specifically specified as described above.

The basic operation of the device of the present invention is that it has a sieving section 2, a dispensing operation section 3, and a dispensing section 4, and two vibrators 25 that apply vertical vibration to the sieving section 2 and dispensing section 4; At step 47, the sieve 7 is moved from the sieving section 2 to the dispensing section 4 via the dispensing operation section 3 while vibrating each section 2 and 4 up and down individually, and the sieved large and small samples are placed in the sample receiving section. When removing the sample from the sieve after being received and sieved by the sieve, the sieve can be inverted while being vibrated up and down to take out the sample.

The basic configuration and operation of the sample sieving device of this invention are as described above. Next, the details of the invention will be described below as an example of implementation in a multi-stage type device shown in FIGS. 1 to 3. Explain.

A frame part 1 for mounting the components of the apparatus, a sieving part 2 that continuously sorts the crushed sample according to the size of grains and lumps, and a sieve 7 attached to the sieving part.
A dispensing operation unit 3 that applies vibration to the sieve and rotates the sample remaining on the sieve when discharging the sample from the sieve;
a dispensing unit 4 for taking out samples with different lump sizes;
It is comprised of a hopper support part 5 attached to the dispensing part and for moving the hopper, and a station part 6 for collecting the sieved sample.

The frame part 1 includes a frame-shaped lower frame 11 to which a station part 6 is mainly attached, a sieving part 2,
It is composed of a frame-shaped upper frame 12 to which a dispensing operation section 3, a dispensing section 4, and a hopper operation section 5 are attached.

As shown in FIGS. 1 and 2, the sieving section 2 is
Three pillars 23 are erected on a rectangular first diaphragm 22 mounted with four springs 21 on a base plate 13 mounted between the upper and lower frames. A dispensing section 4 in which the sieves 7 are arranged adjacent to the sieving section 2 at a constant interval (an interval slightly higher than the height of the sieve, which will be described later) in the length direction of the pillars.
A plurality of pairs of first rail members 24 (nine in the embodiment) are attached to be used when moving to the side.

A first vibrator 25 for sieving is attached to the lower surface of the first diaphragm 22, and a second vibrator 47 is attached to the top of the three columns, and a triangular support is used to maintain the spacing between these columns. Horizontal frame member 1 of plate 26 and upper frame 12
A hopper 27 for inserting a sample is installed between the upper part of the column and the vertical frame member 1.
A steady rest guide 28 is installed between the 5 and 5.

As shown in FIGS. 2 and 3, the dispensing operation unit 3 has rectangular support plates 32 attached to four columns 31 erected on a base plate 30 at intervals slightly higher than the height of the sieve, as described above. As shown in FIG.
4 is installed.

A cylinder 35 for rotating the sieve is attached to one end of the rotating plate 34, and a bearing 36 is attached to the other end of the rotating plate 34. A sieve 7 is attached to one end of a shaft 37 rotated by the cylinder. A rotating plate 3 is provided between the supporting plate 32 and the rotating shaft 33.
4. A sieve moving cylinder 38 is attached to move the shaft 37 in the horizontal direction.

As shown in FIGS. 7a and 7b, the bearing 36 described above has screw holes 362 at the upper and lower ends, an elliptical shaft insertion hole 363 in the center, a fixing column 361, a cross tube-shaped bearing fitting 364, and a pair of springs 365. and flat plate 36
7 and a mounting bolt 368, and as shown in FIG.
Attach the spring 365, bearing fitting 364, and spring 365 to this fixed column in this order, attach the flat plate 367 to the fixed column 361 with bolts 368, and attach the support shaft 76 to the bearing fitting 364 as shown by the imaginary line.
By inserting the shaft 37 into the shaft insertion hole 363 of the fixed column 361, the shaft 37 can be supported even when vibration is applied.

As shown in FIGS. 1 to 3, the dispensing part 4 is mounted on a rectangular second diaphragm 42 mounted on a base plate 13 with four springs 41.
The book columns 43 are set up, and each pair of columns is set up at a distance slightly higher than the sieve height in the length direction of each column, and is used to move the sieve 7 from the adjacent sieving section 2 to the dispensing side. A plurality of second rail members 44 (nine pieces) are attached.

A hopper 45 is provided on the lower surface side of the second diaphragm 42, and a second vibrator 47 for dispensing is provided on a rectangular support plate 46 that maintains the spacing between the three pillars 43. A steady rest guide 48 for the pillar 43 containing the vibrator is attached to the horizontal frame member 14 of the upper frame 12, and a cylinder 49 for opening and closing the lid is attached to the hopper 45 between the base plate 13 and the hopper. It is installed.

As shown in FIGS. 1 to 3, the hopper operation unit 5 includes a vertical frame member 15 and a frame 51 mounted on a base plate 13, and chain wheels 52 and 53 attached to the bottom side of the base plate 13 and the upper end of the frame. A motor 57 moves a moving arm 56 attached to a guide column 55 erected between the frame 51 and the base plate 13 up and down on the chain 54 attached between both chain cars, and a hopper 58 attached to this moving arm 43
It is configured to move up and down between 1 and 2.

4 and 5, 81 is a spring, 82 is a camshaft, and 83 is a motor.

The station 6 has rails 61 installed on the lower frame 11 as shown in FIGS. 1 to 3.
And above it, an electronic balance 63 and a vertical movement cylinder 64
It is composed of a butt movement motor 66 that moves the trolley 62 to which the carriage 62 is attached via guide rollers 67 with cables 65 disposed thereon.

The sieve 7 is as shown in Fig. 6 a, b, Fig. 8 to Fig. 10 a,
As shown in b, there is a mesh of 6.73 mm in the middle of the frame 71, in which the opening diameter at one end gradually becomes smaller.
Different sieve screens 72 of 4.76, 2.83, 2, 1, 0.5, 0.25, 0, 125 are attached, and a support shaft 7 is attached to a band 74 attached to the outside of the frame 71 with a snap lock 73.
Install 5,76.

And on this shaft is the first rail member 2 mentioned above.
4 and a pulley 7 rolling on the second rail member 44
7 is attached, and the above-mentioned support shaft 76 is attached to the above-mentioned bearing 3.
A flexible joint 39 which is passed through the bearing fitting 364 of No. 6 and the oval shaft insertion hole 363 of the fixed column 361, and which has no hindrance to the transmission of rotational force between the shaft 37 and the shaft such as a spring, and which has no hindrance to vibration. It is connected with . In the figure, 78 is a ring for preventing the band from slipping off.

The sieving device of this invention is constructed as described above, and hereinafter, this device will be used to sieve a sample,
The dispensing and measuring operations will be described.

First, as shown in Figure 1, the sieve mesh sizes are 6.73, 4.76, 2.83, 2, 1, 0.5, 0.25,
Hopper 2 of the sieving section 2 with eight small sieves 7 with a gradual mesh of 0.125 m/m and a sample receiver 8B attached
When a sample pulverized under specific conditions is put into 7 and the first vibrator 25 is operated, the sieve placed on the first rail member 24 is moved up and down, and the sieve mesh size is 6.73.
Grains and lumps with a size of 0.125 m/m or less are sequentially sieved downward to the sieve below the sieve mesh 72, and grains and lumps with a sieve mesh of 0.125 m/m or less are stored in the lowest sample receiver 8B with a blind plate. .

In this case, the maximum amplitude of the vertical vibration is regulated by the steady rest guide 28, and the vibrations applied to the sieve 7 cause the shaft 76 to vibrate as well, but the vibrations of this shaft 76 are inserted into the bearing 364, which rotates. A spring 365 between the movable plate 34 and the flat plate 367 provides support that follows the vibration width, and since it is connected to the shaft 37 by a flexible joint 39, the vibration is attenuated and transmitted to the shaft 37 and the sieve rotation cylinder 35, causing no hindrance. It is configured so that there is no

When the sieving operation is completed, the sieve moving cylinder 38
The shaft 37 is rotated around the rotating shaft 33 as the third
From the state shown in Fig. 6a to the broken line in Fig. 3,
As shown in the figure and FIG. 6b, the sieves 7 are first moved from the top to the first rail member 24 to the second rail member 44, and then moved to the dispensing section 4. .

Before the uppermost sieve 7 is moved, the motor 57 of the hopper operating section 5 is operated, and the hopper 58 is hoisted up by the chain 54 and rises to the uppermost sieve position as shown by the broken line in FIG. The sieve rotation cylinder 35 is then operated to rotate the shaft 7.
5 and 76 by 180 degrees, the sieve 7 is rotated as shown in FIGS. In addition to sieve 7, this sieve 7
The remaining sample with the largest grains and lumps is completely taken out into the hopper 58.

When the transfer to the hopper 58 is completed, the hopper is lowered, and the sieve 7 is moved between the rotating cylinder 35 and the moving cylinder 3.
8, it rotates 180 degrees again and rotates counterclockwise from the second rail member 44 to the first rail member 24, returning from the dispensing section 4 to the sieving section 2.

Next, the sample with the largest grains and lumps collected in the top sieve 7 collected in the hopper 58 is transferred to the hopper 45, and is moved under the hopper 45 with a cart 62 on a rail 61 by the operation of a motor 66. Then, the lid of the discharge port of the hopper 45 which is being vibrated is opened and transferred by the operation of the lid opening/closing cylinder 49 onto a vat (flat plate) 68 which is lifted up to the hopper mouth by the vertically moving cylinder 64.

When the sample is transferred to the vat 68, the vertical cylinder 64 is operated, and the vat 68 is placed on the electronic balance 63 for weighing. When the weighing is finished, the cart 62 moves on the rails 61 to the outside of the frame 1 and takes out the weighed sample.

After this, the sieving section 2 and the dispensing section 4 both operate the first vibrator 25 and the second vibrator 47, and perform the same operation on seven more sieves and one sample receiver 8B, and the sieves are separated. Samples with different grain and lump sizes are weighed, and the weighed and analyzed data are input into a computer (not shown) to obtain sample test results.

[Effects of the invention] Since this invention is configured as described above, it produces the effects described below.

The sieving device of this invention has a sieving section 2, a dispensing operation section 3, and a dispensing section 4, and two vibrators 25 and 47 that apply vertical vibration to the sieving section 2 and dispensing section 4. The dispensing unit 4 is moved from the sieving unit 2 to the dispensing unit 4 via the dispensing operation unit 3 while individually vibrating each unit 2 and 4 up and down.
In addition to moving the sieve 7 to the sieve, the sieved large and small samples are received in the sample receiver, and the sieved sample is taken out from the sieve by inverting the sieve while vibrating it up and down, thereby discharging the sample. can be executed.

Therefore, according to this invention, the first effect is that the sieving work and the dispensing work can be carried out continuously and automatically.

In particular, in this invention, the sieve 7 is replaced by the vibrator 2.
Since sieving and discharging can be performed continuously while vertically vibrating the sieve at 5 and 47, the second effect is that accurate particle size inspection can be performed because the sieve mesh, so-called mesh, is less likely to be clogged with the sample. have

In addition, even if a clogged sample occurs, the sieve 7 can be vibrated up and down while automatically reversing and discharging, so the clogged sample can be reliably discharged, and the sieve 7 can be used for the next use. A third effect is that cleaning work is not required.

Furthermore, since the sieve 7 is vibrated up and down to perform sieving, the sample is also vibrated up and down, so the sample does not collide with the sieve frame and be crushed, and the original particle size of the sample is maintained. Since sieving can be performed, there is a fourth effect of reducing errors in particle size inspection results.

[Brief explanation of drawings]

The figures all show one embodiment of this invention; Fig. 1 is a front view of the device with a part of the frame removed, Fig. 2 is a side view, Fig. 3 is a plan view, and Fig. 4 is a plan view. and Fig. 5 are side views showing the relationship between the dispensing unit and dispensing operation unit, Figs. 6 a and b are top views for explaining the operation of the dispensing operation unit, and Fig. 7 a is a perspective view of the bearing. , FIG. 7b is an exploded perspective view, FIG. 8 is an exploded perspective view showing the relationship between the sieve and the band, FIG. 9 is a cross-sectional view of the sieve, and FIGS. 10a and 10b show the band attached to the sieve. FIG. 2... Screening section, 13... Base plate, 3... Dispensing operation section, 22... Vibration plate, 4... Dispensing section, 23, 31, 43... Support column, 7... Sieve, 24
...First rail member, 8B... Sample receiver, 25...
...First vibrator, 32... Support plate, 42...
...Second diaphragm, 33...Rotating shaft, 44...Second
rail member, 34... rotating plate, 47... second vibrator, 35... sieve rotation cylinder, 3
6... Bearing, 58... Hopper, 38... Sieve moving cylinder, 76... Support shaft, 39... Flexible joint.

Claims (1)

[Scope of utility model registration request] A plurality of columns 23 are erected on the first diaphragm 22 which is laid flat on the base plate 13 so as to be able to vibrate vertically by a first vibrator 25, and a first rail member 24 is laid flat on each of these columns. , a sieving section 2 consisting of a sample receiver 8B installed horizontally at the lower part of the support 23, and a support plate 32 installed horizontally on a plurality of supports 31 installed upright on the base plate 13, are rotated via a rotating shaft 33. A moving plate 34 is installed horizontally, and a cylinder 35 for rotating the sieve is attached to this rotating plate 34.
and a bearing 36 of a support shaft 76 connected to the rotation shaft 33 via a universal joint 39, and a sieve 7 is attached to one end of the support shaft 76. A dispensing operation unit 3 having a sieve moving cylinder 38 that rotates in the horizontal direction, and a second vibrator 4 on the base plate 13.
A plurality of columns 43 are erected on the second diaphragm 42 which is installed horizontally so as to be able to vibrate vertically at 7, and each of these columns 43
A second rail member 44 for transferring the sieve 7 on the first rail member 24 by its movement is provided horizontally, and a hopper 58 is provided between each of the pillars 43 so as to be movable up and down. 4. A sample sieving device comprising: