KR100333481B1 - Apparatus having self-cleaning vacuum roller for air subtract - Google Patents

Abstract

The present invention relates to an automatic purifying vacuum degassing apparatus for degassing the air contained in the powder to minimize the packing volume and to automatically clean the surface of the roller by compressed air every one revolution. A hopper is mounted, the lower body body is formed with an outlet for discharging the degassed powder; Is provided on one side of the body, a plurality of ventilation holes are formed at a predetermined interval on the outer peripheral surface to pass the negative pressure provided from the external vacuum pump and the positive pressure provided from the external compression pump, respectively, and the negative pressure of the vacuum pump and A vacuum roller provided with a plurality of partition walls for dividing the internal space into compartments in order to suck and discharge the positive pressure of the compression pump, respectively; Distribution means for applying a positive pressure of the compression pump to at least one compartment of the vacuum roller and a negative pressure to the other compartment; Filtering means provided on an outer circumferential surface of the vacuum roller to prevent the powder from being sucked inwardly; It is provided on one side of the vacuum roller, the pressing roller for pressing the powder to the vacuum roller side; And it provides an automatic purifying vacuum degassing apparatus comprising a power supply means for providing a rotational power to the vacuum roller and the compression roller.

Description

Automatic Purification Vacuum Degassing Equipment {APPARATUS HAVING SELF-CLEANING VACUUM ROLLER FOR AIR SUBTRACT}

The present invention relates to a vacuum degassing apparatus for physically increasing the density of powder in order to reduce the packing volume of the powder, and in particular, at least one vacuum roller having a vacuum chamber and a compressed air chamber is included. The present invention relates to an automatic purifying vacuum degassing apparatus for degassing air contained in the powder by passing the powder between the rollers, and forcibly discharging the degassed powder and the remaining powder in the positive pressure portion.

In general, the degassing apparatus forcibly compresses or vacuums a large amount of air contained in raw materials such as polyethylene and PVC, which are used for industrial production, and solids produced in the form of dust such as seasonings and pharmaceuticals. It is a device that reduces the packing and transportation costs by artificially increasing the density of the powder by removing it by degassing method.The powder is filled in a container of a certain size and then compressed or forcedly transported by a screw conveyor. A pressurized degassing apparatus employing a method of increasing the density of the liver and two vacuum rollers or a vacuum degassing apparatus of sucking the air contained in the powder by passing the powder between the vacuum roller and the pressing roller have been used.

A conventional vacuum degassing apparatus is briefly described with reference to FIGS. 1 to 2 as follows.

As shown in the drawing, a conventional vacuum degassing apparatus is provided with a hopper 101a for supplying the powder 100 to the upper surface, and an outlet 101b for discharging the degassed powder 100 to the lower surface thereof. The formed body 101, a fixed vacuum roller 102 and a movable pressing roller 103 for pressing / degassing the powder 100, which are installed inside the body, and at the center of the vacuum roller 102. A vacuum roller shaft 104 fitted, a compression roller shaft 105 fitted in the center of the pressing roller 103, and a bolt 106 are fixed to the outer surface of the body 101 via a bearing. The first housing 107 for supporting the vacuum roller shaft 104 via (not shown) and the second housing 108 for supporting the pressing roller shaft 105 via a bearing (not shown). ), A third housing 109 hinged to an outer surface of the body 101, and connecting the second housing 108 and the third housing 109 1 support arm 110, a pressing roller movable shaft 111, one side of which is hinged to the first housing 107, the other side is coupled to the support plate 112, and the support plate (11) via a bolt (114) A support 113 coupled to the 112, a second support arm 115 connecting the second housing 108 and the support 113, and one end thereof are nipples in the first housing 107. 116a and the other end is connected to a vacuum pump (not shown) to deliver a vacuum pressure to the vacuum roller 102 (Air Tube) 116 and the compression In order to prevent the powder 100 from flowing into the upper portion of the roller 103, the blocking film 117 provided under the hopper 101a and the powder 100 remaining on the outer circumferential surface of the vacuum roller 116 are scraped off. It consists of a scraper (118) provided on the lower side of the body 101 for the bet. Here, the pressing roller movable shaft 111 is hinged to the first housing 107 and a hollow portion formed therein and a cylinder 111a, one side of which is fitted into the cylinder 111a and the support plate ( It is supported through the 112, the spring 111c provided between the support shaft (111b), the handle 119 is coupled to the other end, the outer peripheral surface of the support shaft (111b) and the inner surface of the cylinder (111a) 2, the vacuum roller 102 has a cylindrical hollow body 102a having a plurality of roller through holes 102b for sucking air on an outer circumferential surface thereof, and the hollow body 102a. Of the non-woven fabric filter 102c surrounding the outer circumferential surface of the filter 102c, a steel wire 102d surrounding the filter 102c to maintain the shape of the filter 102c, and the hollow body 102a. Is inserted through the center, one side of the bearing (shown in the first housing 107) Mounted to the support No) mediated through hole is formed the roller shaft (104a) connected to the air tube 116 and the other side is composed of the roller shaft 104 is connected to the external power transmitting device (not shown). In addition, the compression roller 103 is a roller of a general form, the roller including the compression roller shaft 105 is composed of a movable roller that can rotate around the third housing (109).

In the conventional vacuum degassing apparatus configured as described above, the powder supplied through the hopper 101a is transferred to pass between the blocking film 117 and the rotating vacuum roller 102 and the pressing roller 103. While the powder 100 passes between the pressing roller 103 and the vacuum roller 102, the air contained in the powder 100 is discharged to the outside through the roller through hole 102b subjected to a negative pressure, the vacuum roller Since the pressing roller 103 presses the powder 100 toward the vacuum roller 102 by the spring 111c mounted on the movable shaft 111, the volume per weight of the powder is minimized and discharged. Since a negative pressure acts on the outer circumferential surface of the vacuum roller 102, a scraper 118 is provided above the outlet 101b to allow the compressed powder to fall off the surface of the vacuum roller 102.

Since the conventional vacuum degassing apparatus as described above has an operating state in which negative pressure continues to act on the outer circumferential surface of the vacuum roller 102, even when the scraper 118 is provided, the powder 100 always has a predetermined thickness on its surface. Since the part of the degassed product is hardened in a state of being adhered to the roller surface and the vacuum suction input cannot be properly delivered to the powder side, deterioration of the degassing function occurs severely with the passage of the operating time, and the filter 102c ) Is made of non-woven fabric, so the durability of the crimp is weak, requiring frequent replacement of the filter. Accordingly, there is a problem that causes economic losses, such as work requirements, costs, production reduction due to production interruption due to filter replacement work, and due to material limitations of the filter 102c, operating conditions of high temperature and high pressure, or There is a disadvantage that cannot be used in the process using a fine powder.

Therefore, the present invention devised to solve the above-mentioned problems, the vacuum roller including a plurality of chambers (Chamber) and aeration means is mounted, at least one of the compartments while the vacuum roller is rotated positive pressure chamber ( Blowing chamber) and the remaining plurality of chambers become a vacuum chamber, so that the air contained in the powder is degassed and the surface of the roller is automatically cleaned by compressed air every one revolution. The purpose is to provide a degasser.

1 is a front view of a conventional vacuum degassing apparatus.

2 is a plan view of a vacuum roller which is a main portion of a conventional vacuum degassing apparatus.

Figure 3a is a plan view showing an embodiment of an automatic purifying vacuum degassing apparatus according to the present invention.

3B is a front view of FIG. 3A.

Figure 3c is a side view of Figure 3a.

Figure 4a is a cross-sectional view showing an embodiment of a vacuum roller which is the main part of the present invention.

4B is a side cross-sectional view of FIG. 4A.

Figure 5 is a cross-sectional view showing in detail the coupling state of the vacuum roller shaft and the distributor which is the main part of the present invention.

* Explanation of symbols for the main parts of the drawings

301: body 302: drive motor

303: first chain plaque 304: second chain plaque

305: first universal joint 306: first bearing

307: second bearing 308: fixing table

309: first driven shaft 310: vacuum roller shaft

311: third bearing 312: fourth bearing

313: first housing 314: second housing

315: vacuum roller 316: third chain plaque

317: 2nd Universal Joint 318: 5th Bearing

319: 6th bearing 320: 2nd driven shaft

321: pressing roller shaft 322: pressing roller

323: fixed distribution block 324: rotation distribution block

325: support bolt 326: seventh bearing

327: 8th Bearing 328: 3rd Housing

329: fourth housing 330: fixing member

331: the first operation panel 332: the second operation panel

333: first support 334: second support

335: the first connecting rod 336: the first hydraulic cylinder

337: 2nd connecting rod 338: 2nd hydraulic cylinder

339 porous metal filter 340 distributor

In order to achieve the above object, the present invention is equipped with a hopper for supplying the powder on the upper portion, the lower body is formed with an outlet for discharging the degassed powder; Is provided on one side of the body, a plurality of ventilation holes are formed at a predetermined interval on the outer peripheral surface to pass the negative pressure provided from the external vacuum pump and the positive pressure provided from the external compression pump, respectively, and the negative pressure of the vacuum pump and A vacuum roller provided with a plurality of partition walls for dividing the internal space into compartments in order to suck and discharge the positive pressure of the compression pump, respectively; Distribution means for applying a positive pressure of the compression pump to at least one compartment of the vacuum roller and a negative pressure to the other compartment; Filtering means provided on an outer circumferential surface of the vacuum roller to prevent the powder from being sucked inwardly; It is provided on one side of the vacuum roller, the pressing roller for pressing the powder to the vacuum roller side; And it provides an automatic purifying vacuum degassing apparatus comprising a power supply means for providing a rotational power to the vacuum roller and the compression roller.

Hereinafter, an automatic purifying vacuum degassing apparatus according to the present invention will be described in detail with reference to the accompanying drawings of FIG. 3.

3a to 3c, the present invention provides a body 301 including a hopper 301a, an outlet 301b, a blocking film 301c, and first and second scrapers 301d and 301e. A drive motor 302 installed outside the body 301, a first chain plaque 303 coupled to a rotation shaft of the drive motor 302, and a chain (not shown) with the first chain plaque 303. The second chain plaque 304 is connected to the transmission power to the rotation, and the second chain bracket 304 is coupled to one end and the first universal joint (305) is coupled to the other side and the first and The first driven shaft 309 mounted to the fixing table 308 via the second bearings 306 and 307, and one end thereof is connected to the first driven shaft 309 by the first universal joint 305. The vacuum coupled to the body 301 through the first and second housings (313, 314) having a plurality of through holes (310a) are formed on the other side and the third and fourth bearings (311, 312) are mounted A cylindrical vacuum roller 315, which is fitted to the rudder shaft 310, the vacuum roller shaft 310, and is rotated by the power of the driving motor 302, is mounted on one end of the first driven shaft 309. At least one through hole 310a is connected to an external compression pump (not shown) while the first driven shaft 309 rotates, and the other through hole 310a is connected to an external vacuum pump (not shown). A distributor 340 which is connected to provide compressed air and a vacuum, a third chain plaque 316 connected to the first chain plaque 303 and a chain (not shown) to receive rotational power, and one end thereof The second driven shaft coupled to the third chain plaque 316, the second universal joint 317 is coupled to the other side and mounted to the fixing table 308 via the fifth and sixth bearings (318, 319) ( 320, and one end thereof is coupled to the second driven shaft 320 by the second universal joint 317, and It is fitted to the pressing roller shaft 321 supported by the body 301 through the third and fourth housings 328 and 329 on which the eighth bearings 326 and 327 are mounted, and to the pressing roller shaft 321. It consists of a pressing roller 322 for pressing the powder to the vacuum roller 315 side while being rotated by the power of the drive motor 302.

4A and 4B, fastening holes 315a and 315b through which the vacuum roller shaft 310 is mounted are formed on both sides of the vacuum roller 315, and the outer circumferential surface thereof. A plurality of vent holes 315b are formed in the chamber, and a plurality of partition walls 315c radially formed therein are provided therein. In addition, the porous metal filter 339 is attached to surround the outer circumferential surface of the vacuum roller 315, and the micropores having a size smaller than the particle size of the powder to be processed are continuously formed.

As shown in FIG. 5, the distributor 340 is fixed to the vacuum roller shaft 310 via a fixing bolt 325, and the plurality of through holes 310a and the same number of distribution holes 323a are formed. A front distribution stage 323 and a plurality of distribution holes 324a communicating with the distribution holes 323a are formed, wherein at least one distribution hole 324a is connected to an external compression pump and is provided with a plurality of distribution holes ( 324a is composed of a rear distribution stage 324 connected to an external vacuum pump.

3A and 3C, the third and fourth housings 328 and 329 are fixed to the outer surface of the pressing roller, and the first and the first members having the coupling member 330 formed at predetermined portions. Two movable panels 331 and 332, and a guide surface for allowing the first and second movable panels 331, 332 to be moved to the vacuum roller 315 side is formed and fixed to the outer surface of the body 301 First and second hydraulic cylinders 336 having a support 334 and first and second connecting rods 335 and 337 hinged to the coupling member 330 and hinged to the support 334, respectively. , 338 is provided to be movable to the vacuum roller 315 side.

On the other hand, as shown in FIG. 4, in this embodiment, a vacuum roller divided into six compartments is presented, but the number of compartments is typically calculated by dividing the circumferential length (in mm) formed by the outer circumferential surface of the roller by 200. desirable. In addition, a compressed air storage tank (usually having a capacity of 1.5 times or more of the consumption per minute of the equipment) and the vacuum to store the compressed air supplied from the compression pump to the utility equipment not shown in the figure to maintain a constant pressure A vacuum storage tank provided with means for maintaining negative pressure by the pump and filtering out fine powder particles contained in the sucked air, and a hydraulic pump for supplying hydraulic pressure to the hydraulic cylinder are added.

Referring to the operation of the automatic purifying vacuum degassing apparatus according to the present invention configured as described above are as follows.

When power is applied to the driving motor 302 to drive the first chain plaque 303, the first and second driven shafts 309 and 320 connected through a chain (not shown) rotate to rotate the vacuum roller 315. And the compression roller 322 is rotated. At this time, an external vacuum pump and a compression pump are also operated at the same time so that at least one of the plurality of distribution ports 324a formed in the distributor 340 is connected to the compression pump while the vacuum roller 315 is rotated. The other distribution port is connected to the vacuum pump, and the compartment where the upper partition 315c is located below the horizontal (typically about 5 °) is provided with compressed air (usually 1500 mmHg or more) to adhere to the degassed powder and the surface of the roller. The blown powder is blown and a negative pressure (usually -400 mmHg or less) is applied to the other compartment to suck air contained in the powder through the porous metal filter 339 mounted on the outer circumferential surface of the vacuum roller 315. In addition, as the first and second connecting rods 335 and 337 push the first and second movable plates 331 and 332 to the vacuum roller 315 side, the third and fourth housings 328 and 329. The predetermined pressure (approximately 75 By applying the above-mentioned line pressure), the vacuum roller 315 performs a depressing action simultaneously with the suction action of the vacuum roller 315 to degas the powder. On the other hand, the blocking film (301c) is the powder is discharged to the discharge port (301b) only between the vacuum roller 315 and the compression roller 322, the first and second scrapers (301e, 301d) are vacuum Extra powder that may remain on the surface of the roller 315 and the compaction roller 322 is scraped off.

The powder degassed by the automatic purifying vacuum degassing apparatus of the present invention operated as described above is fed to a separate press mold and subjected to a post-treatment process which is processed to have a packaging form of a predetermined form, followed by a packaging process which is the final step. Through commercialization.

As another embodiment of the present invention may be configured to be equipped with a vacuum roller having the same configuration as the vacuum roller 315 instead of the pressing roller 322 to pass through the powder between the two vacuum rollers to degas. In this case, since the degassing is performed by two vacuum rollers at the same time, the degassing efficiency can be further increased as compared with the above-described embodiment.

The present invention described above is not limited to the following claims and the accompanying drawings, various substitutions, modifications and changes that can be made within the scope without departing from the spirit of the present invention is also within the scope of the present invention. Will be apparent to those of ordinary skill in the art.

According to the present invention configured and operated as described above, the degassing means and the discharging means are simultaneously provided to the vacuum roller of the vacuum degassing apparatus for pressing / degassing the powder, thereby adhering the powder to the surface of the vacuum roller during operation. The degassing efficiency is improved, and the porous metal filter with high durability is provided to prevent the increase of maintenance cost and the decrease of productivity due to the replacement of the filter, and it can be used universally regardless of the particle size, pressure and temperature during the process. have.

Claims (7)

A hopper for supplying powder to an upper portion thereof, and a body having a discharge hole for discharging the degassed powder at a lower portion thereof; Is provided on one side of the body, a plurality of ventilation holes are formed at a predetermined interval on the outer peripheral surface to pass the negative pressure provided from the external vacuum pump and the positive pressure provided from the external compression pump, respectively, and the negative pressure of the vacuum pump and A vacuum roller provided with a plurality of partition walls for dividing the internal space into compartments in order to suck and discharge the positive pressure of the compression pump, respectively; Distribution means for applying a positive pressure of the compression pump to at least one compartment of the vacuum roller and a negative pressure to the other compartment; Filtering means provided on an outer circumferential surface of the vacuum roller to prevent the powder from being sucked inwardly; It is provided on one side of the vacuum roller, the pressing roller for pressing the powder to the vacuum roller side; And Power supply means for providing rotational power to the vacuum roller and the compaction roller Automatic purifying vacuum degassing apparatus comprising a. The method of claim 1, The pressing roller is In order to pass the negative pressure provided by the external vacuum pump and the positive pressure provided by the external compression pump, a plurality of vent holes are formed at predetermined intervals, and the negative pressure of the vacuum pump and the positive pressure of the compression pump are respectively sucked in and discharged. Including a plurality of partitions for dividing the internal space into a predetermined place compartment for Automatic purifying vacuum degassing device. The method according to claim 1 or 2, The power providing means A drive motor that provides rotational power, First and second roller shafts fitted to the vacuum roller and the pressing roller, respectively, and having a plurality of through holes communicating with the compartment on one side thereof; First and second power transmission shafts, one side of which is connected to first and second power transmission means for transmitting power of the drive motor, and the other side, respectively, connected to the first and second roller shafts. Automatic purifying vacuum degassing apparatus comprising a. The method according to claim 1 or 2, The distribution means A front distribution end fixed to the vacuum roller shaft and having a plurality of through holes and the same number of distribution holes; A plurality of distribution ports are formed in communication with the distribution holes, at least one distribution port is connected to an external compression pump and the other plurality of distribution ports is connected to an external vacuum pump. Self-cleaning vacuum degassing apparatus consisting of. The method according to claim 1 or 2, The filtering means is an automatic purifying vacuum degassing apparatus which is a porous metal filter in which micropores of a size smaller than a particle size are continuously formed. The method according to claim 1 or 2, First and second housings in which both sides of the compression roller shaft are mounted via bearings; The first and second housings are fixed to the outer surface thereof, and the first and second movable panels having a coupling member formed at predetermined portions thereof, and guide surfaces for operating the first and second movable plates, are formed. First and second hydraulic cylinders having a support fixed to the outer side, and the first and second connecting rods hinged to the coupling member, respectively hinged to the support Automatic purifying vacuum degassing apparatus further comprising a. The method according to claim 1 or 2, Blocking film is provided on the inner upper portion of the body to allow the powder to escape to the outlet only through the vacuum roller and the pressing roller, Scraper is provided on the inner lower portion of the body to scrape off the excess powder remaining on the surface of the vacuum roller and the compaction roller Automatic purifying vacuum degassing apparatus further comprising a.