JPH08325923A - Method and apparatus for processing belt-like material by vacuum - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the energy balance and the effect for the treatment of an endless web. SOLUTION: The steam is withdrawn by a vacuum generator, led via a separator, the gas is returned from the steam via the vacuum generator. Subsequently, in the travelling area for the endless web, rollers 16, 17 are provided between the turning rollers 10-14 for returning the endless web with the last roller to the treatment zone so that the rollers may be in the front and the rear each other to the travelling direction of the endless web. The sucking conduit 32 for sucking the generated steam is connected to the separator 33, the head 35 of this separator is connected to the gas-sucking conduit 38, the bottom 34 is connected to the liquid conduit 36, the gas-sucking conduit 38 is connected to the vacuum generator 39, and the liquid conduit 36 equipped with a pump 37 is connected to the separator 33. A conduit 41 for returning the gas is provided between the vacuum generator 39 and the treatment housing 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to guiding a strip-shaped material in a processing housing through a diverting roller, sucking generated vapor (hereinafter, Brueden) by vacuum, separating it into a gas and a liquid, and transferring the liquid to the processing housing. The present invention relates to a method and a device for processing rewound strip material.

[0002]

2. Description of the Prior Art A method and a device for treating a strip-shaped material by directing it through a heated washing liquid in a washing machine have already been described in the applicant's Japanese patent application No. 7-259007. The gas-water-mixture produced in the washing machine is discharged to the outside and then separated into a gas phase and a liquid phase. The liquid is returned to the washing machine. The warm gas is discharged without being used. The thermal energy that is entrained and discharged along with this gas is dissipated in the cleaning liquid in the cleaning machine.
This means a significant cooling of the cleaning liquid with a high energy loss. The gas released into the atmosphere pollutes the environment. When sucking the liquid by vacuum, a part of the liquid
Due to the pressure drop in the vacuum and the accompanying drop in boiling point, the gas is transferred to the gas phase, and the energy present therein is released to the atmosphere without being used together with the remaining gas.
Heretofore, it has not been possible to make the energy present in the gas available by very simple means.

Steam is generated when the band-shaped material is dried, and the steam is discharged through a permeator and the like. As a result of the vapor being sucked in, foreign air, in particular cold air, is sucked in, which impairs the drying effect. Such treatments are disadvantageous, especially when using drying cylinders. This is because it significantly cools the drying cylinder.

[0004]

The problem underlying the present invention is that the energy consumed is completely recovered, the treatment action is improved and the drying action is eliminated, without the disadvantages of the known methods and devices. To provide a method and a device of the type described at the outset.

[0005]

SUMMARY OF THE INVENTION According to the present invention, the above-mentioned problems are solved by one or a plurality of rotations of the strip-shaped material, which are provided one behind the other in the running direction of the strip-shaped material, for drying the fiber strip-shaped material. Guiding through the rollers, the vapor is sucked by the vacuum generator, guided through the separator, the vapor is led out the gas through the vacuum generator, and then from the last roller to the process housing in the strip zone. It will be solved by putting it back.

With the method according to the invention, the gas separated from the vapor is guided through a vacuum generator. For this vacuum generator, additional energy is applied, for example the built-in drive mechanism output, which is a motor with an output of 10 to 100 kw. This additional energy causes the gas in the vacuum generator to be further heated by friction losses. This return guide of the additionally heated gas not only improves the energy balance, but also leads to an improved processing action.

The gas, which is returned to the process housing and heated in the vacuum generator, is sprayed onto the strip material directly in the discharge zone of the strip material, for example via a nozzle. This allows the vapors generated during drying to escape from the surface of the strip material, improving the drying action. The returned gas,
Alternatively, a part of this gas surrounds the roller in the direction opposite to the running direction of the strip-shaped material from the running area to the running direction, and the flow path is sealed to the outside and is heated. When guided through, the steam is blown out of the strip of material over the entire length of this flow line, then exits this flow line and is again sucked by the vacuum generator together with the gas. The flow line also improves the drying action.

The drying medium required for drying the strip material is applied to the strip material via rollers and / or heated flow lines. When a heated roller is used, a temperature equilibrium occurs inside the flow line, which temperature equilibrium is almost equal to the temperature of the gas to be returned. The gas forms superheated steam (Dampf) with the steam, and this steam
eden) is partially exhausted and saturated. This structure also significantly improves the drying effect.

If the inner wall of the double-walled jacket forming the flow line is provided with baffles, a turbulent flow occurs inside the flow line, which further improves the drying effect. To do. A double-walled, heated jacket that can be used is described in German Patent Application No. 4416 645.1. When using such a heated, double-walled jacket, the rotating rollers are not heated.

When processing a strip of material made of fabric, gas and steam (hereinafter Brueden) are sucked together from the entry zone of the strip through a suction tube through which the strip is guided.
When processing strips of elastic knit, the rollers are designed as rotating suction rollers and / or sieve rollers. From the first suction roller, steam and gas are drawn into the inside of the roller through the band-shaped material, through the sieve jacket of the roller, and then discharged axially to the outside. In the latter roller, all or part of the returned gas is introduced axially into the roller and from the inside through the sieve jacket through the strip material into the flow line. . This configuration also has an advantageous effect on the drying of the strip material. An advantageous design of the suction roller is described in German patent application 44 36 745.7.

In order to further improve the energy balance, according to the invention, all or part of the gas sucked by the vacuum generator is introduced in a finely distributed manner in a heat exchanger provided with a water supply. All or part of the warm liquid produced in this case is supplied to the consumer, or all or part of it is introduced into the process housing and all or part of the exhaust produced is led to the atmosphere.

During the processing of the strip material, part of the processing medium is lost. This loss must be compensated for by adding fresh medium, for example fresh wash water. The branched warm gas is introduced in finely divided form into the liquid bath of the heat exchanger or directly into the treatment medium. The heat contained in the gas is released into the almost completely liquid medium and either introduced into the process housing or supplied to another consumer. The remaining, sufficiently cold air can be released into the atmosphere without any fear. All or part of this air is guided into the process housing.

The device for carrying out the method described above is based on a processing machine for processing a strip of material which is guided in the processing housing by way of turning rollers and which is arranged in the processing housing in order to discharge the vapors which form. A suction device is connected, in which case the gas-liquid mixture formed is sucked and separated. The device for drying fibrous strip material according to the invention features one or several rotating rollers for drying the fibrous strip material between turning rollers for guiding and treating the strip material. Are arranged one behind the other when viewed in the direction of travel of the strip of material, and a suction conduit is connected to the separator for sucking the vapor produced, which separator is connected to the gas suction conduit at the head. At its bottom it is connected to a liquid conduit,
At this time, the gas suction conduit is connected to a vacuum generator, and the liquid conduit equipped with a pump is connected to the consumer.
And a gas return conduit between the vacuum generator and the process housing.

According to another configuration according to the invention, a branch pipe emerges from the gas return conduit emerging from the vacuum generator, the branch pipe having a distribution plate with a very fine opening. Is introduced into the bottom region of the heat exchanger, which is provided with a suction conduit for the warm liquid in the region of the distributor plate, and above the distributor plate an exhaust conduit which is guided to the atmosphere. ing.

The method according to the invention can easily be implemented with the device according to the invention. Hereinafter, the present invention will be described in detail with reference to the embodiments of the invention illustrated in the accompanying drawings.

[0016]

DETAILED DESCRIPTION OF THE INVENTION In the case of the treatment of textile strips, in particular the drying, the strip 3 according to FIG.
14 through a further two unheated rollers 16 and 17, and the wall 2 is guided through the insulating process housing 1. The run-in end 4 of the band-shaped material 3 is introduced into the processing housing 1 via the water tank 6. This water tank comprises a heatable double-walled housing 7 with a liquid filling part 8 and an overflow part 9. In the liquid filling part 8 there is a first turning roller 10 for the strip material 3.
Further, turning rollers 11 to 13 are provided. These turning rollers are provided with two unheated, rotating rollers 16 for guiding and treating the strip material 3.
8 and the roller 17 is connected by a roller shaft 19. It is also possible to use heated rollers. The running-out end portion 5 of the strip-shaped material 3 passes through another turning roller 14 and is led out from the processing housing 1 to another via the air-tight opening 15 on the running-out side. The rollers 16 and 17 are surrounded by heatable, double-walled jackets 20 and 21 (see German patent application 44 16 645.1), which together with the tongue packings 22-24. A closed flow line 25 is formed. A baffle is provided inside the jackets 20 and 21. The tongue packings 22 and 23 are provided in the region where the strip material 3 moves from the roller 16 to the roller 17, and the tongue packing 24 is provided in the region where the strip material 3 runs from the roller 17. The end where the strip material 3 runs into the flow line 25 is open. Turning roller 12
Between 1 and 13, a suction pipe 26 with a suction opening 31 is provided on the left side of the strip 3 and a suction pipe 27 with a suction opening 30 is provided on the right side of the strip material 3.
Branch pipes 28 and 29 connected to a suction conduit 32 are connected to these suction pipes 26 and 27.

The suction conduit 32 is tangentially connected to the separator 33. A liquid conduit 26 with a pump 37 emerges from the bottom connecting pipe 34 of this separator 33. Separator 3
A gas suction conduit 38 branches from the head connecting pipe 35 of No. 3, and this gas suction conduit is introduced into a vacuum generator 39 having a drive mechanism 40. The additionally heated gas here passes via the gas return conduit 41 to the distribution box 4
2, the distribution box 42 comprises a spray nozzle 43 which is oriented in the direction of the strip material 3.

The present invention is not limited to the illustrated embodiment of the invention. That is, it is possible to carry out this method using only one roller. When processing, in particular drying, the strip 3 of elastic knitting, two rollers 48 and 52 with sieve jackets 49 and 53 are provided between the turning rollers 13 and 14 as shown in FIG. , And a diverting roller 44 between them. Another turning roller 45 is provided between the turning roller 41 and the opening 15 on the running side. The roller 48 together with a sieve jacket 49 is formed as a suction roller according to German Patent Application No. 44 36 745.7 and the roller 52 is provided with a sieve jacket 53 as a sieve roller.
Roller 52 is heatable and / or non-heatable. Above the rollers 48 and 52, heating is possible,
Double-walled jacket 46 (German patent application No. 4)
4 16 645.1), which jacket is fitted to the rollers and therefore the flow line 7
5 is formed. Even in the embodiment of the present invention,
The inside of the jacket 46 is provided with a baffle. A tongue-shaped packing 47 is provided in the running region of the band-shaped material 3.
The roller 48 is the roller shaft 50, and the roller 52 is the roller shaft 7.
It is equipped with 4. An axial suction portion 51 is provided in the area of the roller shaft 50, and an axial supply portion 54 is provided in the area of the roller shaft 74, and this supply portion branches from the gas return conduit 41. The branch conduit 55 is connected.
Valves 56 and 57 provide a regular distribution of returned gas.
Below the rollers 48 and 52 is a bottom basin 58.

The present invention is not restricted to the illustrated embodiment of the invention. This is because the method can easily be carried out using only one roller. All rollers 16, 17 and 48, 52 have sealed end walls which are not shown. It is also possible to use suction and / or sieving rollers in the embodiment of the invention illustrated in FIG.

The flow lines 25 and 75 are for the gas inflow region 7
6; 77 to the gas and vapor outflow regions 78 and 79 are completely sealed, and thus the gas and vapor flow line 2
A uniform flow in 5 and 75 is guaranteed. In the embodiment of the invention illustrated in FIG. 1, the gas and vapor together leave the flow line 25 and reach the region of the suction pipes 26, 27 via the region 78. Gases and vapors are drawn from there by vacuum through the suction openings 30, 31 into the suction conduit 32 and from there to the separator 33. Here, the gas and the liquid are separated. The separated water passes through the bottom connecting pipe 34 and the pump 37.
Into a liquid conduit 36, which is supplied to another consumer. The separated gas is sucked into the vacuum generator 39 from the separator 33 via the head connecting pipe 35 and the gas suction conduit 38, heated there, and introduced into the distribution box 42 via the gas return conduit 41. . The nozzle openings 43 are directed over the width of the strip 3, so that the returned gas is evenly distributed over the width of the strip 3 and is sprayed onto it. From here, the gas in uniform turbulence flows with the vapor through the flow line 25 into the outflow region 78.

In the embodiment of the invention shown in FIG. 2, the returned gas is introduced into the processing housing 1 via the gas return conduit 41 and the branch conduit 55. Valves 56, 57
Allows the partial amount of gas to be arbitrarily distributed to the conduits 41, 55. In the embodiment of the invention shown in FIG. 2, a part of the gas is introduced via the distribution box 42 and the outflow nozzle 43 onto the strip material 3 and into the flow line 57.
The remaining part of the gas is supplied to the axial supply part 54 via the branch conduit 55 and from there through the sieve jacket 53 into the flow conduit 57. This flow line is completely sealed from the inflow region 77 to the outflow region 79. Along with the generated vapor, gas is sucked into the roller via the sieve jacket 49 of the roller 48 and into the branch conduit 32 via the axial suction section 51. Already, the following processing is performed as described above.

In the embodiment of the invention according to FIG. 3,
Part or all of the gas heated in the vacuum generator 33 is introduced via the conduit 36 into the area of the bottom of the heat exchanger 66 which is filled with water. The pipe 64 running above the bottom of the heat exchanger is equipped with an outflow nozzle 65. Regulated distribution is provided by valves 56 and 60. Water, for example fresh water, is introduced into the heat exchanger 66 via a conduit 67 equipped with a valve 68. The distribution plate 69 having an extremely fine opening finely distributes the gas and the fresh water, and enables an optimum heat transition from the gas to the fresh water. The heated water is supplied to another consumer through the conduit 73. Exhaust present is conduit 7
It is released to the atmosphere by zero. It is also possible to introduce the exhaust into the gas return conduit 41 via conduit 71. Valves 61 and 62 provide the appropriate distribution.

When the valves 61 and 62 are closed and the valve 59 is open, the gas leaving the vacuum generator 39 is completely returned into the process housing 1. When the valve 59 is closed and the valve 60 is open, the gas is completely introduced into the heat exchanger 66. Valves 59 and 60 are adjustable so that a portion of the gas is introduced into the process housing or heat exchanger 66. Valve 62 is open and valve 61
If is closed, the exhaust is exhausted completely to the atmosphere. When the valve 61 is open and the valve 62 is closed, all exhaust gas is introduced into the gas return conduit 41. Exhaust gas can also be partially led out via conduits 70, 71 by appropriate adjustment of valves 61, 62.

[0024]

By means of the method and the device according to the invention described above, the best use of thermal energy and the environment of the belt material made of woven material and the material made of elastic knitted material, without being polluted to the environment, and in the equipment. It is possible to perform optimum drying without complicating the structure of.

[Brief description of drawings]

1 is a diagram of an installation for treating a strip of fabric.

FIG. 2 is a diagram of an installation for treating a strip of knit material.

FIG. 3 is a diagram showing another configuration of equipment.

[Explanation of symbols]

1 Processing Housing 2 Wall Part 3 Band-shaped Material 4 Band-shaped Material Run-in End 5 Band-shaped Material Run-out End 6 Water Tank 7 Housing 8 Liquid Filling Section 9 Overflow Section 10, 11, 12, 13, 14, 14, 44, 45 Rolling Roller 15 openings 16 and 17 rollers 18 and 19 roller shafts 20 and 21 jackets 22 and 23 and 24 tongue packing 25 flow conduits 26 and 27 suction pipes 28 and 29 and 32 suction conduits 30 and 31 suction openings 33 separators 34 bottom connection Tube 35 Head connection tube 36 Liquid conduit 37 Pump 38 Gas suction conduit 39 Vacuum generator 40 Drive mechanism 41 Gas return conduit 42 Distribution box 43 Outflow nozzle 46 Jacket 47 47, 48, Roller 56, 57 Valve 76, 77 Inflow area 78, 79 Outflow area

Claims (22)

[Claims] A method for treating a strip-shaped material, which comprises guiding the strip-shaped material through a turning roller in a processing housing, sucking generated vapor by a vacuum, separating it into a gas and a liquid, and returning the liquid to the processing housing. ,, for drying the fiber strip material, the strip material is guided through one or a plurality of rotating rollers provided one behind the other in the running direction of the strip material, and the vapor is sucked by a vacuum generator. , A method for treating a strip of material by vacuum, characterized in that it leads through a separator and out of the vapor through a vacuum generator, and then returns from the last roller to the treatment housing in the stripping zone of the strip of material. . 02. The returned gas surrounds the roller in the direction opposite to the running direction of the band-shaped material from the running region to the running-in region of the band-shaped material and seals the roller from the outside. 2. A method according to claim 1, characterized in that it is guided through a heated flow line and sucked with the vapor formed after it leaves this area. A method according to claim 1 or 2, characterized in that the gas to be returned is sprayed onto the strip material via a nozzle. 4. The method according to claim 1, wherein all or part of the gas sucked from the vacuum generator is returned into the processing housing. 05. All or part of the gas sucked from the vacuum generating device is introduced into a heat exchanger provided with a water supply part, and all or part of the warm liquid generated at this time is supplied to the consuming part to generate. 5. The method according to claim 1, wherein all or part of the exhaust gas is discharged into the atmosphere. 6. A method according to claim 1, wherein the roll is operated without heating it independently. 7. The method according to claim 1, wherein the roll is independently heated and operated as a drying cylinder. 8. A method according to claim 1, wherein at least one roll is operated without heating it independently and at least one roll is operated as a drying cylinder which is heated independently. The method described. 09. A woven fabric, characterized in that steam is sucked by one or a plurality of suction pipes in the region of the strip-shaped material running on the front roller, the strip-shaped material being guided through this suction pipe. 9. A method as claimed in any one of claims 1 to 8 for treating a strip of material. 10. When the roll is formed as a suction roll or a sieve roll, vapor is sucked axially from the first roller and all or part of the gas returned is introduced into the shaft of the last roll. Claim 1 for treating a strip of elastic knitted material, characterized in that
The method according to any one of 1 to 9. 11. A strip, which comprises a processing machine for guiding and processing strip material in the processing housing via turning rollers and in which the outlet for discharging the steam produced is connected to the processing housing. In a device for processing material by vacuum, one or several rotations are made to dry the fiber material between deflection rollers (10-14, 44, 45) for guiding and processing the material. The rollers (16, 17, 48, 52) are arranged one behind the other as viewed in the running direction of the strip material,
A suction conduit (32) is associated with the separator (33) for sucking the vapor produced, which separator (3).
At 5) the gas inlet conduit (38) and its bottom (3)
4) is connected with the liquid conduit (36), the gas suction conduit (38) being connected to the vacuum generator (39),
And a liquid conduit (36) comprising a pump (37) is connected to the consumer (1), and a gas return conduit (41) is provided between the vacuum generator (39) and the process housing (1). An apparatus for treating a band-shaped material by a vacuum, which is provided. 12. The housing end of the gas return conduit (41) is provided with a distribution box (42) having an outflow nozzle (43), the outflow opening of this distribution box being a strip (3). The device of claim 11, wherein the device is oriented in a direction. 13. A jacket (20, 2) with rollers (16, 17), each of which is heatable, double-walled, with an internal baffle, so that a flow line (25) is formed.
1) are respectively surrounded by a distance, the jacket (20) of the first roller (16) being in the region of the running end of the strip material (3), the rear roller (17).
A strip of fabric, characterized in that the jacket (21) is provided with tongue-like packings (22-24) both at the run-in end and at the run-out end of the strip (3). Apparatus according to claim 11 or 12 for processing material. 14. A belt-shaped material (3) with a first roller (1).
In the area before 6), one or many suction pipes (2
6, 27) to which the suction pipes are connected via a branch line (28, 29) with a suction conduit (32). The device according to one. 15. Heatable, double-walled rollers (48, 52) adapted to the flow sections (75) formed in the upper part of the rollers (48, 52). , Inner jacket with baffle (46)
Be surrounded by a roller (4
8, 52) is covered by a bottom tank (58) and between the rollers (48, 52) another deflecting roller (449) is provided in the lower part. 13. An apparatus according to claim 11 or 12 for treating a strip of elastic knitted material. 16. The rollers (48, 52) are designed as suction rollers or sieve rollers, the front roller (48) being the axial suction part (51) and the rear roller (52) being the axial direction. 16. Device according to claim 15, characterized in that it comprises a supply (54) of 17. A branch conduit (55) branches from the gas return conduit (41), which branch conduit (5).
16. An open channel (2) leading to the axial feed (54) and a gas return conduit (41) and a branch conduit (55) each equipped with a valve (56, 57). Alternatively, the apparatus according to 16. 18. A device according to claim 11, wherein the distribution box (42) is provided in the jacket (21; 46). 19. A branch conduit (63) branches off from the gas return conduit (41), the branch conduit (64) being provided with a number of holes, the fresh water supply (67).
And a heat exchanger (6) having a distribution plate (69) having openings.
20. A suction conduit (73) for the heated liquid is provided in the bottom of 6) and in the area of the distributor plate (69). The device according to any one of the above. 20. Device according to claim 19, characterized in that an exhaust conduit (70) is provided above the distributor plate (69) which is guided to the atmosphere. 21. Device according to claim 19, characterized in that the distributor plate (69) is provided with very fine holes. 22. A branch conduit (7) from the exhaust conduit (70).
1) is branched, and this branch conduit is a gas return conduit (4
Device according to any one of claims 11 to 21, characterized in that it is associated with 1).