EP3282044B1 - Cleaning device for a spinning preparation machine - Google Patents

Description

The invention relates to a cleaning device for a spinning preparation machine according to the preamble of claim 1.

In the textile industry, the cleaning effort for the machines has permanently decreased due to the changed process stages. 50 years ago the machines were cleaned every hour, today you can get by with a rough cleaning once a week. Intensive cleaning is carried out no more than twice a year. The cleaning process, which used to be purely mechanical (hand brush and cleaning cloth) is now mostly pneumatic, i.e. the machines are blown out or vacuumed out.

The air is blown out through hoses with nozzle openings, which are connected to the compressed air network of the spinning mill. It is cleaned almost unthrottled with the pipeline system pressure of 6 bar. The purpose of blowing is to whirl up the fiber deposits and then suck them off from the many suction points inside the machine or the spinning mill building. With this process, 100% of the fiber waste can never be removed. Another disadvantage is that the fiber waste is blown into nips and other openings not intended for this purpose. This means that critical points are unnecessarily burdened with dirt deposits.

Vacuuming the machine is much more effective in terms of cleaning technology. The fiber deposits are disposed of directly. According to the usual procedure today, a longer hose is connected to the mandatory machine suction or hall suction, or an existing suction hose from the respective spinning preparation machine is used, clamped on one connection side from the associated suction point and this hose is handled like a vacuum cleaner. The fiber accumulations are placed directly on the spinning mill's waste filter and disposed of accordingly. The disadvantage of this process is the low vacuum available in the machine suction. This negative pressure has been reduced significantly over the past 30 years due to various energetic developments. In the past up to 2000 Pa (0.02 bar) negative pressure was available, today 300 to 500 Pa (0.003 - 0.005 bar) negative pressure are more common. With this negative pressure it is hardly possible to clean thoroughly.

Alternatively, the spinning mill operator can also purchase industrial vacuum cleaners for cleaning. These vacuum cleaners are self-sufficient and only require a power connection. Due to the amount of dirt, you have large filter bags and a correspondingly high negative pressure (approx. 3000 Pa) available. The disadvantage of this cleaning technology is the temporary storage of waste in the filter bag and the handling of the relatively large and heavy vacuum cleaner itself.

The FR 643.991 shows several cards arranged in a row, each with a suction area for dirt and separated fibers. The suction areas are connected to a manifold line under negative pressure via hose lines.

In the DE 3717569 C1 a device for evacuating contaminants is disclosed, using either compressed air or a Fan is operated. The device can be connected to a delivery line under negative pressure.

The DE 3514710 A1 shows a movable carriage coupled to a suction channel, on which different hoses for cleaning textile machines can be arranged.

The EP 0753612 A1 discloses a fixed suction device on a route in which a flexible suction hose can be acted upon by a fan with suction air.

In the DE 102009028 359 A1 a route is disclosed which has a permanently installed suction device for all work sites.

It is the object of the invention to create a cleaning device for a textile machine which enables efficient cleaning of the textile machine with simple handling.

The invention solves the problem posed by the teaching of claim 1; further advantageous design features of the invention are characterized by the subclaims.

According to the technical teaching of claim 1, the cleaning device comprises a suction tube with which dust, fibers or dirt is sucked in via a pressure booster.

The invention is characterized in that the dust, fibers or dirt can be transported away directly or indirectly via a suction channel of the spinning preparation machine.

With the features of the invention, it is possible to remove the dust and dirt when cleaning the spinning preparation machine via the suction channel already integrated in the spinning mill. It doesn't have to expensive filters can be changed and the cleaning device can be used for any spinning preparation machine.

The dust, fibers or dirt is fed into the suction channel by means of a suction hose.

The cleaning device according to the invention in the mobile embodiment has the advantage that it can be connected to different spinning preparation machines, so that only a few cleaning devices are necessary for each spinning operation. The mobile embodiment can comprise a housing for the cleaning device which is provided with wheels, rollers or sliding elements.

A pressure chamber is arranged between the pressure booster and the suction hose, which is at least partially separated from the pressure booster by a partition. Heavy foreign parts, for example pieces of metal, which are sucked in through the suction pipe, can be deposited in the pressure chamber. The pressure chamber of the cleaning device can be made relatively small, so that the cleaning device can be built compactly and the handling is simplified for the employees of the spinning mill.

In an advantageous embodiment, the pressure booster is designed as a radial compressor. A centrifugal compressor has the advantage of being inexpensive to manufacture.

The pressure booster preferably generates a negative pressure of greater than 0.03 bar up to 0.25 bar, preferably from 0.1 bar to 0.25 bar, on the suction side in the suction pipe. Since this negative pressure is many times higher than the negative pressure of the suction system of the spinning mill, the spinning preparation machine can be cleaned very efficiently even in inaccessible places.

Because the pressure booster generates an overpressure of up to 0.2 bar on the pressure side in the pressure chamber or in the suction hose, the suctioned dirt is reliably conveyed into the suction system of the spinning mill.

In an advantageous embodiment, the device is mobile or can be integrated into a spinning preparation machine. The mobile version can be used for the entire spinning mill, so that the operator only has to purchase a few cleaning devices. The integrated cleaning device can be designed as a component of any spinning preparation machine, in which, for example, the suction pipe can be removed and hung on the inner surface of a housing door.

The spinning preparation machine is advantageously designed as a card, draw frame, winding machine, combing machine or blowroom machine.

Figur 1:

eine Darstellung einer Karde;

Figur 2:

das Saug- und Belüftungssystem einer Karde;

Figur 3:

die Absaugstellen einer Karde;

Figur 4:

eine erfindungsgemäße separate Vorrichtung zur Reinigung einer Spinnereivorbereitungsmaschine;

Figur 5:

eine erfindungsgemäße integrierte Vorrichtung zur Reinigung einer Spinnereivorbereitungsmaschine;

Figur 6:

eine nicht beanspruchte integrierte Vorrichtung zur Reinigung einer Spinnereivorbereitungsmaschine;

Figur 7:

eine erfindungsgemäße separate Vorrichtung zur Reinigung einer Strecke;

Figur 8:

eine Putzereimaschine.

The invention is explained in more detail below with reference to a possible schematically illustrated embodiment. It shows:

Figure 1:

a representation of a card;

Figure 2:

the suction and ventilation system of a card;

Figure 3:

the suction points of a card;

Figure 4:

a separate device according to the invention for cleaning a spinning preparation machine;

Figure 5:

an integrated device according to the invention for cleaning a spinning preparation machine;

Figure 6:

an integrated apparatus not claimed for cleaning a spinning preparation machine;

Figure 7:

a separate device according to the invention for cleaning a route;

Figure 8:

a blowroom machine.

Figure 1 shows a card 10, the housing 20 of which is mainly made of sheet metal and is essentially closed on all sides. Air inlet openings 22 to 26 (suction openings), of which the air inlet openings 22, 24 and 25 are shown, are present in the wall surfaces of the housing 20 at several points, here for example five points. The air inlet openings 23 and 26 are present in the rear wall of the housing 20 and are not shown here. All of the air inlet openings 22 to 26 have grid bars, which are not designated in more detail, between which air intake slots are present. Through the air inlet openings 22 to 26, air is drawn from the atmosphere into the interior space within the housing 20 from the outside sucked in. A central suction channel is designated by 27, which is connected to a suction source (not shown) of the spinning mill.

To Figure 2 For example, there may be six suction hoods 19a to 19f, each of which has an open face forming an air inlet opening and the other face of which is connected to a common collecting line 28 which leads to the central suction channel 27. The direction of the air currents is indicated by arrows E, F, G. The supply air flows E, E ₁ , E ₂ enter the open air inlet openings of the suction hoods 19a to 19f by suction, flow through the suction hoods 19a to 19f as air flows F and emerge from the end openings of the suction hoods 19a to 19f and at the same time as exhaust air flows G. the collecting line 28 into the suction channel 27 and are sucked off from there.

At the card 10 is after Figure 3 a plurality of cleaning points for dust, trash o. The like. Available, the z. B. are designed as suction hoods 19a, 19b and which are vacuumed. Among other things, the drum 11, shown here in broken lines, licker-in 12 and pick-up 13 are placed under a suction air stream. A common suction box 29 can be assigned to several suction points. The suction boxes can each be connected to the input of a collecting device 30 via a collecting line 28. At the output of the collecting device 30, for. B. a collecting box o. The like., The central suction channel 27 is connected, which is in connection with a (not shown) suction air source of the spinning mill, via which the extracted fibers and dust are centrally sucked off.

A first embodiment of the cleaning device 40 according to the invention is shown in FIG Figure 4 shown. This embodiment shows a separate mobile cleaning device 40. In a housing 41, a pressure booster 42 is arranged, which via a suction pipe 43 the Can suck in fibers and dust from a spinning preparation machine. The pressure booster 42 is designed as a centrifugal compressor in this exemplary embodiment. The sucked in dust is passed into a pressure chamber 45, which in turn is connected directly or indirectly to the suction channel 27 by a suction hose 46. The pressure chamber 45 can be at least partially separated from the pressure booster 42 by a partition 44. The sucked-in fibers are conveyed into the pressure chamber 45 by the pressure booster 42 on the outer circumference of the partition wall.

The pressure chamber 45 is used to accommodate heavy foreign parts, for example sucked-in pieces of metal such as loose fastening elements.

A closable connection 58 or opening for the suction hose 46 is preferably provided in the area of the collecting device 30, since the greatest negative pressure of the suction channel 27 is applied here. Alternatively, the suction hose 46 can also be connected to the suction channel 27, which is also provided with a closable connection 58 for this purpose. It is also possible to arrange the connection 58 for the suction hose 46 on a collecting line 28, but here the vacuum applied is significantly lower than in the area of the collecting device 30. A power connection 47 is provided to be connected to the energy network of the spinning preparation machine. The housing 41 can be provided with wheels, rollers or sliding elements in a mobile manner.

The pressure booster 42 can also be designed as a separator or cyclone for generating the negative pressure, in which case the Air duct in the cleaning device 40 must be designed differently.

The pressure booster 42 preferably generates a pressure difference or a negative pressure of up to 25 KPa (0.25 bar) on the suction side, which corresponds to a multiple pressure difference of the suction channel 27. This creates an overpressure of approx. 10 to 20 KPa on the pressure side, which ensures that the fibers and dust are conveyed through the suction hose 46 into the suction channel 27.

The cleaning device according to the invention in this embodiment has the advantage that it can be connected to any spinning preparation machine in a mobile manner. There is no need to change expensive filters, since the fibers and dust can be removed via the suction channel 27 which is already integrated in the spinning mill.

A second embodiment of the cleaning device 40 according to the invention is shown in FIG Figure 5 shown. This embodiment shows a cleaning device 40 integrated in a textile preparation machine, here carding machine. This can also have a housing 41 in which, for example, a pressure booster 42 is arranged. One end of a suction tube 43 is fastened to the housing 41, the free end of the suction tube 43, with which the fibers and dust are sucked in, can be fastened in a holder inside the spinning preparation machine. The holder, not shown, can be arranged, for example, on the inside of a door of the cladding.

The fibers and dust sucked in by the pressure booster 42 are guided past a partition 44 into a pressure chamber 45, which in turn is connected directly or indirectly to the suction channel 27 by a suction hose 46. It is also possible to arrange the connection 58 for the suction hose 46 on a collecting line 28, but here the applied negative pressure is significantly lower than in the area of the collecting device 30. As in the first exemplary embodiment, a radial compressor can be used as pressure booster 42 to generate the negative pressure. The power supply of the cleaning device 40 can be ensured by the integrated connection to the power supply of the card 10. A pressure difference or a negative pressure of up to 25 KPa (0.25 bar) is preferably generated on the suction side of the pressure booster, which corresponds to a multiple pressure difference of the suction channel 27. An overpressure of approx. 10 to 20 KPa is generated on the pressure side, as a result of which the fibers and dust are conveyed into the suction channel 27 via the pressure chamber 45 or directly by means of the suction hose 46.

A not claimed integration of the cleaning device 40 in a spinning preparation machine shows Figure 6 , in which the pressure booster 42 can be integrated into the suction channel 27 or into the collecting device 30. For this purpose, the suction channel or the collecting device has a receiving device into which the pressure booster 42 can be inserted in a fixed (integrated solution) or variable (mobile solution). The connection 58 for the suction hose 46 is arranged below the pressure booster 42 in the area of the collecting device 30. In this exemplary embodiment, the suction hose 46 hangs on or in the housing 20 of the card 10, preferably in the area of the inside of a housing door, and can be plugged into the connection 58 with an adapter when the card 10 is cleaned. In the mobile solution, the pressure booster 42 on or in the housing 20 of Card 10 can be deposited after cleaning. Here, too, the pressure booster 42 is supplied with energy directly via the card 10.

The pressure booster 42 can either only be actuated during cleaning when the card 10 is turned off. Then the pressure booster 42 builds up a pressure of up to 0.25 bar on the suction side and conveys the fibers and dust on the pressure side with up to 0.2 bar into the suction channel 27, which continues to operate under a negative pressure of up to 0, 02 bar. During production, the pressure booster 42 is put out of operation. Alternatively, the pressure booster 42 can be regulated down to the negative pressure of the suction channel 27 during production operation and run with it.

The embodiment of Figure 7 shows a partial section through a line 50, which can also be part of a double-head line, for example. A plurality of slivers are drawn off from cans via a feeder 51 via a gate and fed into a drafting arrangement 53, which can be arranged under a pivotable housing cover 52. The drafting arrangement 53, not shown, comprises several pairs of rollers with which the slivers can be drawn and / or doubled. Via an air guide tube 54, which is usually arranged under a cladding (not shown), air is sucked in directly or indirectly in the area of the drafting arrangement 53 in order to suck off dust and foreign parts (cleaning point). This air guide tube 54 opens into a further air guide tube 55, which is guided, for example, along an end face of the section 50 and is connected to the suction channel 57 of the spinning mill preparation via an air guide tube 56.

The track can be cleaned with the mobile cleaning device 40 according to the first embodiment or with an integrated cleaning device 40 according to the second embodiment. The route 50 sees a lockable one for this purpose Connection 58 on one of the air guide tubes 54, 55, 56, which is accessible after opening the housing cover. The suction hose 46 is connected to this connection 58, so that the suctioned off dust and the fibers are carried away via the central suction source. The energy supply can also be ensured here via a connection (not shown) on the line 50 or via an external power supply, for example via the power network of the spinning mill preparation. In the Figure 8 shows a device for breaking up fibers and detecting foreign parts, as it is used in the blowroom of a spinning mill. A representation of the cleaning device 40 as in FIGS Figures 4 to 5 is waived here. A fiber-air stream 61 conveys fibers into a feed chute 62 of this foreign part detection 60, at the lower end of which several rollers 65 are arranged. These include several slow-running rollers which, on the one hand, pull the fibers out of the hopper and, on the other hand, convey the fibers to a high-speed opening roller. At least one sensor 63, 64 for detecting foreign substances is arranged inside the device. Excess air with the separated foreign parts is drawn off via this cleaning point by means of a suction channel 66. The good fibers are transported to the next machine via a separate channel. A closable connection 58 for the suction hose 46 (not shown) of the cleaning device 40 (not shown) is also arranged on the suction channel 66. Here, too, there is the possibility of integrating the cleaning device 40 into the foreign part detection 60 according to the second exemplary embodiment.

Reference number

10

Card

11

drum

12th

Outlier

13

customer

19a - 19f

Suction hood

20th

casing

22nd

Air inlet opening

23

Air inlet opening

24

Air inlet opening

25th

Air inlet opening

26th

Air inlet opening

27

Suction duct

28

Manifold

29

Suction box

30th

Collection facility

40

Cleaning device

41

casing

42

Pressure intensifier

43

Suction pipe

44

partition wall

45

Printing room

46

Suction hose

47

Power connection

50

route

51

Indent

52

Housing cover

53

Drafting arrangement

54

Air duct

55

Air duct

56

Air duct

57

Suction duct

58

connection

60

Foreign part detection

61

Fiber air stream

62

Hopper

63

sensor

64

sensor

65

Rollers

66

Suction duct

E, E ₁ , E ₂

Supply air flow

F.

Airflow

G

Exhaust air flow

Claims (6)

1. A cleaning device for cleaning a spinning preparation machine, comprising a suction pipe, by which dust, fibres or dirt are sucked via a pressure booster, and by means of a suction hose the dust, the fibres or the dirt are directly or indirectly transportable into a suction channel (27, 57, 66) of the spinning preparation machine, characterized in that a pressure chamber (45) is disposed between the pressure booster (42) and the suction hose (46), wherein the pressure booster (42) is separated at least partially from the pressure chamber (45) by a separation wall (44).
2. The cleaning device according to claim 1, characterized in that the pressure booster (42) is formed as a radial compressor.
3. The cleaning device according to claim 1 or 2, characterized in that on the suction side thereof, in the pressure pipe (43), the pressure booster (42) generates a negative pressure of at least 0.03 bar up to 0.25 bar, preferably of 0.1 up to 0.25 bar.
4. The cleaning device according to claim 1 to 3, characterized in that on the pressure side thereof the pressure booster (42) generates an excess pressure of at least 0.1 up to 0.2 bar.
5. The cleaning device according to any of the preceding claims, characterized by a power connection, which is connectable to the energy supply of the spinning preparation machine.
6. The cleaning device according to any of the preceding claims, characterized in that the device is mobile or can be incorporated into a spinning preparation machine.

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