JPS6143582Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field The present invention consists of a cylindrical sorting tube and a spiral shaft for lifting grains housed in the sorting tube, both of which are installed upright inside the outer shell, and the grains are separated by the spiral shaft. Regarding the vertical grain sorter, which separates fine grains by leaking them through a sorting hole drilled in the peripheral wall of the sorting tube while being raised, the sorting tube is supported within the outer shell with a simple structure, and the sorting tube can be replaced quickly. It was designed so that it could be done.

Prior Art A conventional vertical grain sorter is disclosed in Japanese Patent Application No. 125720/1982 (Japanese Patent Application Laid-open No. 27676/1983) filed by the applicant.
As described in the application, it has a structure as shown in FIG. That is, a fixed particle receiving tube 1, a rotatable cylindrical sorting tube 2 located above the particle receiving tube 1, and a spiral shaft 3 for lifting grains that penetrates through these and rotates in the opposite direction to the rotation direction of the sorting tube 2. is built into the outer shell body 4. The particle receiving tube 1 is a cylindrical tube fixedly provided on a substrate 5 provided at the bottom of the outer shell 4, and has an opening 6 in the peripheral wall.
A supply chute 7 for supplying grains is connected to the supply chute 7. The sorting tube 2 is a covered cylindrical body having an inner diameter that is approximately the same as the inner diameter of the grain receiving tube 1, and has upper and lower circumferential eaves 8 and 9 attached near the upper and lower ends of the outer circumferential wall, and a circumferential wall between the upper and lower circumferential eaves 8 and 9. A large number of screening holes 10 are bored in the hole. Upper and lower eaves 8,
A blade 11 is attached to each of the upper eaves 9, and a large discharge window 12 is provided in the upper peripheral wall of the upper eave 9. The spiral shaft 3 has a fried grain spiral 13 fixed to a relatively large diameter cylinder. Inside the outer shell 4, there is an upper receiving gutter 15 having a rising wall 14 that enters inside the upper circumferential eave 9 and approaches the circumferential wall of the sorting tube 2, and an upper receiving gutter 15 that enters inside the lower circumferential eave 8 and has a rising wall 14 close to the circumferential wall of the sorting tube 2. A lower gutter 17 having a rising wall 16 close to the base 5 is provided, and the inner vagina on the base 5 is divided into three parts.

A gearbox 18 is attached to the lower part of the base 5, and a rotary disk 19 and a drive shaft 20 are made to protrude from the gearbox 18 onto the base 15. The rotary disk 19 and the drive shaft 20 are configured to rotate in opposite directions, and the spiral shaft 3 is placed and locked on the rotary shaft 19, and the extension shaft 21 that passes through the inside of the spiral shaft 3 is connected to the drive shaft 20. Connect with 22. The upper part of the extension shaft 21 rotatably passes through the bearing 23 of the spiral shaft 3, passes through the fitting part 24 of the sorting tube 2 so as to transmit rotational force, and has a canopy 25 provided on the outer shell 4 so as to be openable and closable. Piercing and supporting. The sorting cylinder 2 has a fitting part 2
4 is mounted and supported on a bearing 23 of a spiral shaft 3, and a roller 26, which is pivotally supported on the grain receiving cylinder 1, is brought into contact with the lower end side of the outer peripheral wall so as not to oscillate laterally. 27
A belt 30 is stretched between a pulley 28 fixed to the output shaft of the motor 27 and a pulley 29 fixed to the input shaft of the gearbox 18 to transmit power. A rotating disk 19 provided on the output side of the gearbox 18 rotates the spiral shaft 3 at high speed, and a drive shaft 20 also provided on the output side of the gearbox 18 moves the sorting tube 2 through an extension shaft 21 through the rotation of the spiral shaft 3. Rotate at low speed in the opposite direction.

31 is a fine grain outlet for taking out fine grains leaking from the sorting hole 10 of the sorting tube 2, accumulating on the lower gutter 17, and being scraped away by the scraper blades 11 to the outside of the outer shell body 4;
2 is a tank for storing large diameter particles that do not leak out from the sorting hole 10 of the sorting tube 2; the particles are discharged from the discharge window 12, and the particles accumulated in the upper receiving gutter 15 are sent to the tank by a scraper 11. It will be sent to 32.

Grain sorting is carried out by introducing the grains to be sorted from the supply chute 7 into the grain receiving tube 1, and by the rotation of the spiral shaft 3 centrifugal force is applied to the grains to be sorted, and the grains are gradually lifted upward. When reaching the part where the sorting hole 10 is drilled, the fine particles leak out from the sorting hole 10, and the large diameter particles are lifted up inside the sorting tube 2 and passed through the discharge window 1.
2 into the outer shell body 4.

Problems that the invention aims to solve By the way, the grains sorted by this vertical grain sorter have different sizes depending on the type, so the number of grains sorted by the sorting hole 1
It must be possible to exchange it for another sorting tube 2 with a different 0 mesh. In that case, remove the canopy 25 of the outer shell 4, remove the lower circumferential eave 8 attached to the peripheral wall of the sorting tube 2, pull out the sorting tube 2 upwards, and insert the sorting tubes 2 with different size of sorting holes 10 into the outer shell. It is inserted into the fixed position in the body 4 and the lower eave 8 is attached again.
However, since the outer shell body 4 is tall and the sorting tube 2 is also long, apart from the work of extracting the sorting tube 2, when inserting the sorting tube 2 into the fixed position,
It is difficult to fit between the upper and lower receiving troughs 15, 17 and the roller 26, and the work is time-consuming.

Means to solve problems Therefore, the present invention is constructed as follows.

That is, the cylindrical sorting tube 2 and the lifting spiral shaft 3 fitted in the sorting tube 2 are both placed in the outer shell 4.
A sorting hole 10 is provided vertically in the lower end side circumferential wall of the sorting tube 2.
A circumferential eave 8 is provided to guide the fine particles leaking from the outer shell 8 to the outside, and a receiving gutter 17 is provided which enters into the inner side of the eave 8 from the outer shell 4 side to receive the fine particles. In a vertical grain sorting machine in which the sorting tube 2 is replaceable by inserting and removing the sorting tube 2, the outer peripheral surface of the sorting tube 2 below the circumferential eaves 17 is sequentially bulged from the top to the middle. A guide ring 33 is provided, and a plurality of rollers 34 are provided which slide on the lower surface of the guide ring 33 and guide the rotation of the sorting cylinder 2.

Function When pulling out the sorting tube 2 upward for replacement, the upper side surface of the guide ring 33, which has a small diameter in the upward direction, serves as a guide surface to smoothly pass through the circumferential eaves 17, and the sorting tube 2 is removed from the outer shell. When the guide ring 33 is inserted into the body 4, the downwardly tapering lower surface of the guide ring 33 serves as a guide surface to smoothly pass through the circumferential eaves 17 and be stored in a predetermined position.

In addition, since the rotation of the lower part of the sorting tube 2 is guided by the roller 34 that is in sliding contact with the guide ring 33, smooth rotation can be ensured with little rotational shake.

Effects of the invention As mentioned above, the replacement work of the sorting cylinder 2 is done by the guide ring 3.
This can be done smoothly by the guiding action of the upper and lower side surfaces of 3, and the rotation of the sorting tube 2 can also be done smoothly.

Embodiments Below, embodiments of the vertical grain sorter according to the present invention will be described based on the drawings. In FIG. 2, a guide ring 33 is fixed to the lower end outer circumferential wall of the sorting tube 2 below the attachment position of the lower circumferential eave 8, and is bulged out sequentially from the top and bottom toward the middle portion. The bulging diameter of this guide ring 33 is made slightly smaller than the inner diameter of the rising walls 14, 16 of the upper and lower receiving troughs 15, 17. A vertical shaft 35 on which a frusto-conical roller 34 is attached is installed in the grain receiving cylinder 1, and the lower edge of the guide ring 33 is connected to the roller 34.
I support it. Although not shown, the upper end shaft bearing portion of the sorting tube 2 is movable in the axial direction with respect to the extension shaft 21. Therefore, since the sorting cylinder 2 is supported by the roller 34 which is close to the grain receiving cylinder 1,
The opposing gap between the upper end of the grain receiving tube 1 and the lower end of the sorting tube 2 can be set to a predetermined small gap, and when the grains to be sorted rise, leakage from this opposing gap and damage to the grains can be prevented. can.

When removing this sorting tube 2, the guide ring 3
The slanted upper edge of No. 3 passes through the rising walls 14 and 16 of the upper and lower receiving troughs 15 and 17 while guiding them smoothly.
When the sorting cylinder 2 is inserted into the fixed position, the lower end edge of the guide ring 33 smoothly guides the inside of the rising walls 14, 16 of the upper and lower receiving troughs 15, 17, and the roller 3
4 is placed on top.

The configuration of the parts other than those explained in the example is as follows.
It is the same as a conventional vertical grain sorter.

[Brief explanation of the drawing]

FIG. 1 is an overall sectional view of a conventional vertical grain sorter, and FIG. 2 is a partial sectional view showing an embodiment of the present invention. 2... Sorting tube, 3... Spiral shaft, 4... Outer shell, 8... Surrounding eave, 17... Receiving gutter, 33... Guide ring, 34... Roller.

Claims (1)

[Scope of utility model registration request] The cylindrical sorting tube 2 and the spiral shaft 3 for lifting grains housed in the sorting tube 2 are both installed upright in the outer shell 4, and the fine particles leaking from the sorting hole 10 are removed from the lower peripheral wall of the sorting tube 2. By providing a circumferential eave 8 that guides outward, and by providing a receiving gutter 17 that enters into the inner side of the eave 8 from the outer shell 4 side to receive fine particles, and inserting and removing the sorting tube 2 through the receiving gutter 17. In a vertical grain sorter in which the sorting tube 2 is replaceable, a guide ring 3 is formed on the outer circumferential surface of the sorting tube 2 below the eaves 17 and bulges out sequentially from the top and bottom toward the middle.
3 and a plurality of rollers 34 that guide the rotation of the sorting cylinder 2 by slidingly contacting the lower surface of the guide ring 33.