JPS6021793B2 - Stirring type cylindrical screen classifier - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention comprises a horizontally supported cylindrical screen, a screw attached to one end of a rotating shaft rotating on its center line, for feeding powder raw material to be divided into the cylindrical screen, and a rotating It is attached to the center of the shaft and rotates in the inner space of the cylindrical screen, and while the material fed into this space by the screw is illuminated, materials finer than the mesh of the cylindrical screen pass through it, and materials larger than this and coarser. relates to a cylindrical screen classifier of the cylindrical screen classifier consisting of several cylindrical screen blades which are fed out from one end of the screw and the other end thereof.

The purpose of the present invention is to make it possible to classify a large amount of powder paint, etc. using a screen with a very small mesh size, and to replace the cylindrical screen and replace the rotating part with a screw IJ and a hawk blade attached to the rotating shaft. It is an object of the present invention to provide a large-sized device that is easy to install and remove, and has a good dividing effect.

Powder paints are made of synthetic resins such as epoxy or acrylic, pigments,
Add a hardening agent, stabilizer, etc., mix, melt and mix in an extruder, cool and crush in a pulverizer, cut into knots with a mesh of 80 to 50 microns depending on the purpose of use, and decorate with a classifier with a mesh. , manufactured to remove coarse particles. The classifier used for powder coating production needs to be large enough to match the capacity of the extruder and pulverizer, with a capacity of several hundred k9 per hour, and must be disassembled and cleaned every time the type and color of the raw materials change , assembly must be performed.

A screen with a very small mesh like the one above has 40 to 5
It is composed of extremely thin Tetron or nylon warp and weft threads of 0 micron, and is easily torn if scratched with a hard metal. In addition, fine particles that should pass through the mesh are prevented from being discharged to the mallet powder, which is larger than the mesh, to ensure good knotting.
In order to obtain separation efficiency, it is necessary that the cylindrical screen be elongated and long in relation to its diameter. The quasi-Western style cylindrical screen classifier does not generate vibration or noise like a vibrator, and has the advantage of using a large amount of air like a wind classifier and does not require a large bag filter to process this waste air. However, in the case of powder coatings, the processing capacity described above and an elongated cylindrical screen with a fine mesh are required, and the length of the rotating shaft to which the screw and floating blade are attached is 1.5 meters or more. Conventionally, both ends of the rotating shaft were supported by self-aligning medullary bearings attached to both end faces of the casing, or by iron fitting in the center hole of a short hollow shaft supported by these bearings. Therefore, it was difficult for one worker to handle it, so it was not used for powder coatings.

In the present invention, the rotary shaft is hollow with both ends open, and the tip of the rotary shaft on the side where the screw is attached is located inside a bearing box attached to the end face of the raw material inlet side of the casing, with a sufficient interval. deep into the center hole of the hollow drive shaft supported by two bearings arranged so that it is supported on the center line of the cylindrical screen, and the end of the rotating shaft on the phase powder outlet side is attached to the rotating shaft inside, and rotates 3
A bearing box is installed that houses the bearing that determines the position of the shaft and has a flange on the outer periphery that is perpendicular to the rotating shaft. The 3 sides of the flange are connected to the inner plane of the door which can be rotated to open, and both ends of the cylindrical screen are connected to the inside of the casing. Item 4 is characterized in that two guide rails are provided below the cylindrical screen and parallel to the rotation axis supporting the outer periphery of the screen.

According to the present invention, a bearing box on the coarse grain outlet side of the rotating shaft;
By removing the bolts that connect the casing to the door and the bolts that connect the door and the casing, the door can be easily pivoted around the hinge bin, and the heavy door with the bearing box can be carefully aligned parallel to the axis of rotation like in the past. There is no need to move it, remove the axial connection with the rotating shaft, and then place it on the floor. If you remove the bolt that connects the ring at the coarse powder outlet end of the cylindrical screen to the casing, the rotating part is held by a hollow drive rod in the bearing box on the raw material inlet side.
While sliding the ring on the screw side of the cylindrical screen on the two guide rails, the cylindrical screen can be easily pulled out of the machine without being damaged by the screw or the wing. Next, add 2 of the length of the rotating shaft to the inner diameter of the rotating shaft.
Insert a tube or a bee that is more than double the length, hold the end outside the machine with a stand placed on the floor or with a brocade suspended from the ceiling, and hold the rotating part of the machine with this tube or a bee. It can be easily taken out of the machine by one worker by sliding the top. In this way, according to the present invention, disassembly, cleaning and assembly are easy;
It is possible to provide a large fly frame type cylindrical screen classifier that can be operated by one worker in a short period of time. Next, embodiments of the present invention will be described with reference to the accompanying drawings. A raw material inlet 3 is attached to the upper surface of the tubular portion 2 at one end of the casing 1, and a bearing box 4 is attached to the side surface.

Two sealed ball bearings 5 and 6 inside the bearing box 4 support a hollow drive shaft 9 having a keyway 7 inland and a V-groove wheel 8 at the end.

The other end of the casing 1 is sealed by a door 12 supported by an arm 10 and pivotable about a vertical pin 11 attached to the casing 1.

A cover 13 is provided on the upper surface of the casing 1, and a coarse powder outlet 14 and a coarse powder outlet 15 are provided on the lower surface. Cylindrical screen 16
Bando 9 is attached to the short cylindrical parts of rings 17 and 18 at both ends.
, 20, and the ring 17 has one end connected to the ring 18.
Nuts 22a, 22b, 22c (not shown) are removably attached to one ends of three rods 21a, 21b, 21c that are fixed to the housing. The inner diameter of the ring 17 covers the end of the tubular part 2 of the casing 1, and the outer diameter covers the two guide rails 2 provided inside the casing 1.
It is on top of 3a and 23b. The ring 18 is attached to the intermediate wall 25 of the casing 1 with textbook bolts 24. A screw 27 and several fly floating wings 28a, 28b, 28c, 2 are attached to a tubular rotating shaft 26 that is open at both ends.
8d is attached, and the tip with the screw 27 is deeply inserted into the inner diameter of the hollow shaft 9, and the key 29 attached to this is fitted in the keyway 7 of the hollow shaft 9. It has become. Coarse powder outlet 15 of rotating shaft 26
A bearing box 32 containing two sealed ball bearings 30 and 31 is attached to the end on this side. This bearing box 32 is attached to the center of the door 12 with a textbook bolt 33.
The Z door 12 can be easily opened by removing the textbook bolt 34 that fastens it to the casing 1 and the bolt 33 that connects the bearing box 32, pulling the handle 35, and rotating it around the pin 11. Settle. Even in this case, the rotating shaft 26 has a deep tip and is deeply inserted into the inner diameter of the hollow shaft 9 supported by the two bearings 5 and 6, so it is held in a cantilevered state with the bearing box 32 attached. Therefore, when the bolt 24 is removed and the ring 18 is pulled out horizontally, the outer diameter of the ring 17 will be the same as the guide rail 23a.
, 23b, and can be moved parallel to the center line of the rotating shaft 26 and taken out of the casing 1. Next, a round bar 37 with a steel pipe guide 36, which is more than twice as long as the rotating shaft 26 and whose outer diameter is slightly smaller than the inner diameter of the rotating shaft 26, is attached to the tip of the hole in the rotating shaft 26. 8 until they are revived, and then place the pond end on the top of a stand placed on the floor, or hook it to an anchor suspended from the ceiling, and the screw 27, sailing feathers 28a, 28b, 28c, 2
It can be easily taken out of the casing 1 by pulling the rotating shaft 26 attached with 8d and sliding it on the guide rod 36 by J workers for cleaning.

The inside of the casing 1 can be inspected and cleaned from Oribe with the door 12 open, the closed door with the casing cover 13 removed, and the raw material inlet 3. When the drive shaft 9 and the rotating shaft 26 are rotated in the direction of the arrow in the figure by the V-belt hooked on the V-groove wheel 8, the screw 27 feeds the raw material supplied from the raw material inlet 3 into the inside of the cylindrical screen 16.

Inside the cylindrical screen 16, oak floating feathers 28a, 28b,
28c and 28d feed the raw material and move it to the side where the coarse powder outlet 15 is located. During this time, fine powder smaller than the mesh of the cylindrical screen 1616 passes through this and is discharged from the machine through the fine powder outlet 14, while coarse powder larger than the mesh moves on the inner surface of the cylindrical screen 16 and is discharged outside the machine from the phase powder outlet 16. be done. Vibration is generated in the cylindrical screen 16 by the rope action of the catalpas blades 28a, 28b, 28c, and 28d, and the particles clogged in the mesh are thereby removed, and the classification action in the upper part continues.

In carrying out the present invention, the cylindrical screen 16 is divided into several pieces, and several rings are provided between the rings 17 and 18, and the outer diameter is equal to that of the ring 17 and supported by rods 21a, 21b, and 21c. You can also do it.

[Brief explanation of drawings]

1 is a vertical cross-sectional view of an embodiment of the present invention, FIG. 2 is a cross-sectional view taken along the line A-A in FIG. 1, FIG. 3 is a partial plan view, and FIG. 4 is a rotation axis 26 of FIG. FIG. 3 is a partially cutaway plan view of the guide rod for pulling out the guide rod. 1...Casing, 3...Raw material inlet, 5,
6...Bearing, 10...Arm, 11...
...Pin, 12. ．．・．． ．．・Door, 14...Found powder exit, 15...Found powder exit, 16...
Cylindrical screen, 17, 18... Circular ring, 19, 20
... Band, 21a, 21b, 21C ... Rod, 23
a, 23b...Guide rail, 26....・．． Rotating shaft, 27...Screw, 28a, 28b, 2
8c, 28d... Foundation Azusa feather, 30, 31...
... Bearing, 36 ... Guide rod. Figure 4 Figure 1 Figure 2 Figure 3

Claims (1)

[Claims] 1. A cylindrical screen 16 supported horizontally, a screw 27 attached to one end of a rotating shaft 26 rotating on its center line, and several stirring plates attached to the center of the rotating shaft 26 and rotating inside the cylindrical screen 16. Feather 28a
, 28b, 28c, and 28d, the tips of the screws 27 are located inside the bearing box 4 attached to the end face of the casing 1, and are arranged at sufficient intervals. The rotary shaft 26 is deeply fitted into the center hole of the hollow drive shaft 9 supported by two bearings 5 and 6, and the rotary shaft 26 is open at both ends.
A bearing box 32 is attached to the other end of the casing 1 and houses bearings 30 and 31 that are attached to the rotating shaft 26 and determine the position of the rotating shaft 26, and has a flange 32a perpendicular to the rotating shaft 26 on the outer periphery. The casing 1 is supported by an arm 10 that can pivot around an attached vertical pin 11, and removably holds a bearing box 32 attached to the rotating shaft 26 at the center of the inner surface. The door 12 seals the end face with the coarse powder outlet 15, and the rotating shaft 2
The outer periphery of the ring 17 on the side where the screw 27 is located among the two rings 17 and 18 that hold both ends of the cylindrical screen 16 and are connected by several rods 21a, 21b, 21c parallel to the cylindrical screen 16. An agitation type cylindrical screen classifier characterized by having two guide rails 23a and 23b attached inside a casing 1 in parallel to a rotating shaft 26 so as to support the cylindrical screen classifier.