A device for pneumatically feeding fiber material to multiple textile machines, and the method by which this device is used.

Abstract

The present invention relates to a device for the pneumatic feeding of fiber material to multiple textile machines (1) configured as carding machines or rotary carding machines, via filling chutes (3) connected to a common pneumatic conveying line (4) that runs over the filling chutes (3) placed in front of the textile machines (1), where the conveying line (4) for connection to the filling chutes (3) has a ground opening (9) between the line inlet (5) and the end of the line (8) for each filling chute (3), where a fiber processing machine (6) can be connected to the line inlet (5) via a material conveying fan (7), and the end of the line (8) is permanently closed, where a closing element (10) coupled to an adjustment drive (11) is arranged between two adjacent ground openings (9) in one conveying direction (A), where the relevant closing element (10)It is adjacent to one of two adjacent ground openings (9) located on the upstream side and enables the flow of the conveyor line (4) along its length in an open position while it is blocked in a closed position, and here a control unit (13) is connected in communication with the textile machines (1) and the adjustment drives (11) and is configured to move the nearest closing element (10.c) on the upstream side from the open position to the closed position by means of the associated adjustment drive (11) when a failure occurs in at least one of the last textile machines (1.6) in the conveyor direction (A). Furthermore, the present invention relates to the method by which the device is used and to another device.

Description

[0001] The present invention relates to a device for pneumatically feeding fiber material to a plurality of textile machines, designed as carding machines or carding machines, by means of filling chutes upstream of the textile machines, which are connected to a common pneumatic conveying line. The present invention further relates to a method using the device.

[0002] EP 0 175 056 A1 discloses a pneumatic transport system for fiber flakes for feeding a plurality of cards by means of a transport medium flowing through a channel by cross-feeding, wherein the channel has a constant rectangular cross-section, in the interior of which control plates serving to control the medium are provided, which are pivotably attached to pivot axes arranged perpendicular to the longitudinal direction of the channel and located on the bottom surface of the channel.

[0003] JP S48 72420 A discloses a pneumatic conveying system for fiber flakes for feeding multiple carding machines, wherein a common conveying line runs above the filling hoppers of the carding machines. Two closing flaps are assigned to each filling hopper in the conveying line, which are apparently pivotable parallel to each other. Due to the design, only one of the filling hoppers can be fed at a time.

[0004] From DE 34 42 942 A1, a device for pneumatically feeding a number of cards is known by means of reserve chutes upstream of the individual cards, which are connected to a common pneumatic conveying line and to which feeding chutes are downstream. The conveying line is connected via a material conveying fan to an upstream fiber processing machine, e.g., a fine opener.

[0005] From EP 0 303 023 A1, a carding line with, for example, eight cards is known. A common feed channel runs over the cards. Using suitable separating agents, the carding line can be divided into two lines in order to feed the first line with flakes via a first feeder and the second line via a second feeder.

[0006] DE 20 2020 101190 U1 discloses closure devices for closing bottom openings in a conveying channel for fiber flakes. When the respective closure device is closed, the cross-section of the conveying channel should not change, so that the flow of fiber flakes can continue unimpeded through the closed closure device in the conveying channel.

[0007] The object of the present invention is to provide a device or a method to prevent the clogging of the transport line and the malfunctioning textile machine in the event of a malfunction.

[0008] The problem is solved by the invention specified in the patent claims. Advantageous embodiments are the subject of the dependent claims, and the invention also includes combinations of the individual dependent patent claims in the sense of an AND conjunction, as long as they are not mutually exclusive.

[0009] The solution to the problem is provided by a device for the pneumatic feeding of fiber material to a plurality of textile machines, which are designed as carding machines or carding machines, by means of filling chutes upstream of the textile machines, which are connected to a common pneumatic transport line running above the filling chutes, wherein the transport line has a bottom opening between its line inlet and its line end for connection to the filling chutes, wherein a fiber processing machine can be connected to the line inlet via a material transport fan and the line end is permanently closed, wherein in one transport direction a closing element coupled to an actuator is arranged between each pair of bottom openings that are adjacent to each other,wherein the respective closing element borders an upstream bottom opening of the two adjacent bottom openings and allows flow through the transport line in an open position and prevents it in a closed position, and wherein a control unit is communicatively connected and configured with the textile machines and the actuators in the event of a malfunction of at least one textile machine last in the transport direction, to move the upstream nearest closing element from the open position to the closed position by means of the associated actuator.

[0010] If at least one of the last textile machines fails due to a malfunction, the consumer for the pneumatically fed fiber material in the strand end of the transport line, formed by the permanently sealed end of the line, is missing. An advantage is that by sealing the sealing device nearest upstream of the malfunctioning textile machine, blockage of the strand end of the transport line and the filling chute of the malfunctioning textile machine is prevented, without impairing the operation of the upstream or upstream-located textile machines. A further advantage is that after the malfunction, which may have been caused, for example, by a defect in the textile machine, a belt break, or even scheduled maintenance requiring the textile machine to be stopped, has been rectified, the textile machine can restart more quickly.If, in addition to the last textile machine, adjacent textile machines further upstream also fail due to a malfunction, the nearest shut-off device upstream of the row of malfunctioning last textile machines can be closed to prevent blockage in the strand end. However, if the operation of the last textile machine is unaffected and only a front or middle textile machine is malfunctioning, none of the shut-off devices are moved to the closed position so as not to disrupt the operation of the last textile machine.

[0011] To adapt the air conditions in the transport line to the number of operating textile machines, the upstream closing devices, as proposed in DE 34 42 942 A1, can be set in positions between the open and closed positions. Preferably, up to eight cards are connected to the end-closed transport channel.

[0012] Using the device, a method according to the invention can comprise the following steps: Pneumatic feeding of fiber material to the textile machines by means of the material transport fan, wherein the fiber material is pneumatically transported in a transport direction directed towards the end of the line; processing of signals to activity states of the textile machines by the control unit, wherein, during operation of the textile machines in which the textile machines process the fiber material, the control unit holds the closing elements in their open position or moves them into their open position by means of the actuators, and, in the event of a malfunction of at least one textile machine last in the transport direction, the control unit moves the closing element nearest upstream of the malfunctioning textile machine from the open position to the closed position by means of the associated actuator.

[0013] The solution to the problem is also provided by a device for the pneumatic feeding of fiber material to a plurality of textile machines, which are designed as carding machines or carding machines, by means of filling chutes upstream of the textile machines, which are connected to a common pneumatic transport line running above the filling chutes, wherein the transport line has a bottom opening for connection to the filling chutes, wherein the bottom openings are formed between a first line inlet, which is connected to a first fiber processing machine via a first material transport fan defining a first transport direction, and a second line inlet, which is connected to a second fiber processing machine via a second material transport fan defining a second transport direction.wherein, in both transport directions, downstream of each bottom opening, a closing element coupled to an actuator is located, which independently of each other allows flow through the transport line in an open position and prevents it in a closed position, and wherein a control unit is communicatively connected to and configured with the textile machines and the actuators to hold at least one of the two closing elements arranged between two adjacent bottom openings in its closed position by means of the associated actuator for dividing the transport line into two line sections, and in the event of a malfunction of at least one textile machine last in the respective transport direction, to move the nearest closing element upstream in the respective transport direction from the open position to the closed position by means of the associated actuator.

[0014] The device according to the invention with the two material transport fans offers the same advantages as those described in connection with the device according to the invention with the one material transport fan, so that reference is made here, for the sake of brevity, to the above description.

[0015] The transport line is divided into two sections by at least one closing element, which is held in the closed position. This allows the textile machines from two different lines within the spinning mill to be supplied with fiber material. A first group of textile machines can be connected to the first section of the line, and a second group of textile machines can be connected to the second section. Preferably, the two closing elements, which are arranged between the two adjacent bottom openings, are held in the closed position to divide the transport line into the two sections. This reduces the dead-end section at the end of the line, thus minimizing the accumulation of fiber material. The division by means of the at least one closing element allows for adjustment of the number of textile machines per group.Another advantage is that the cable sections can be fed with different fiber materials.

[0016] The division into two pipe sections results in two strand ends. To prevent blockage of the respective strand end in the event of a malfunction of at least one of the last textile machines in the respective transport direction, it is advantageous for the control unit to close the shut-off device located upstream of the malfunctioning textile machine, so that the operation of the upstream textile machines is not affected.

[0017] Preferably, up to eight cards are connected to the transport channel per section of the line.

[0018] Using the device, a method according to the invention can comprise the following steps: Dividing the transport line into the two line sections, each of which is connected to one of the material transport fans and each includes at least one of the bottom openings, wherein the control unit holds or moves at least one of the closing devices in its closed position by means of the associated actuator; pneumatically feeding fiber material to the textile machines by means of the two material transport fans, wherein the fiber material is pneumatically transported through the two line sections in the two opposite transport directions; processing signals to activity states of the textile machines by the control unit, wherein, when the textile machines are operating and processing the fiber material, the control unit holds the other closing devices in their open position by means of the actuators, irrespective of the at least one closing device closed for dividing the transport line.in their open position, and in the event of a malfunction of at least one of the last textile machines in the respective transport direction, the control unit moves the nearest closing element upstream of the malfunctioning textile machine in the transport direction of the respective line section from the open position to the closed position by means of the associated actuator.

[0019] For all the aforementioned solutions, the same principle applies: the closure devices can be designed as flaps, slides, or similar components. The transition from the open to the closed position, and vice versa, can be achieved by a pivoting movement around the horizontal or vertical axis. An axial displacement is also possible instead of a pivoting movement. In particular, the respective closure device is designed as a plate-shaped butterfly valve, which can be pivoted in the transport line around a pivot axis, especially a vertical one, from the open to the closed position and vice versa by means of the actuator. Such a valve adjustment can be easily implemented in the transport channel.

[0020] Preferably, the distance between the respective bottom opening and the adjacent closing element in the closed state is a maximum of 500 millimeters. In particular, the distance is at least 20 millimeters. This provides sufficient installation space in the transport channel to accommodate the respective adjustable closing element and ensures that the strand end and at least one malfunctioning textile machine do not become blocked.

[0021] The actuators can include pneumatically operated pressure cylinders.

[0022] The control unit can be a higher-level control unit, a so-called line controller, to which, among other things, the textile machines are connected. The line controller can monitor and control the operation of the system. For this purpose, the control unit can receive signals regarding the activity status of the individual textile machines. To detect a fault at an early stage on the respective textile machine, or at least on the last one in the line, the line controller can be connected to subordinate control units of the textile machines. These can transmit the fault, for example, "in service," "belt break," or similar, to the line controller. Depending on the specific model, the line controller can instruct the closing of the nearest closing device upstream of the faulty textile machine immediately upon receiving the fault message or after a defined grace period. The latter can be advantageous, for example, in the case of a reported belt break.

[0023] Further features and advantages of the invention will become apparent from the following description of preferred embodiments. These show: Figure 1 is a schematic representation of a device according to a first embodiment of the present invention, showing a scenario in which the last textile machine has failed due to a malfunction and the remaining textile machines upstream are in operation; Figure 2 is a schematic representation of the device made of Figure 1, wherein a scenario is shown in which the last two textile machines have failed due to a malfunction and the remaining textile machines upstream are in operation; and Figure 3 a schematic representation of a device according to a second embodiment of the present invention, wherein a scenario is shown in which in the first line section the last textile machine and in the second line section a group of last textile machines have failed due to a malfunction and the remaining textile machines upstream are in operation.

[0024] The Figure 1 Figure 1 shows a device for pneumatically feeding fiber material to a plurality of textile machines 1 according to a first embodiment of the present invention. The textile machines 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, shown here by way of example, are designed as carding machines and are arranged side by side on a hall floor 2.

[0025] Textile machines 1.1, 1.2, 1.3, 1.4, 1.5, and 1.6 have upstream filling chutes 3, which are connected to a common pneumatic conveying line 4 running above the filling chutes 3. The conveying line 4 has a line inlet 5 to which a fiber processing machine 6 is connected via a material conveying fan 7. The conveying line 4 is permanently sealed at a line end 8 furthest from the line inlet 5. The material conveying fan 7 pneumatically conveys the opened fiber material through the conveying line 4 in a conveying direction towards the line end 8. The conveying direction is defined in the Figure 1 This is illustrated by arrow A. The bottom openings 9 formed in the transport line serve as line outlets, to which the filling chutes 3 of the textile machines 1.1, 1.2, 1.3, 1.4, 1.5, 1.6 are connected. The fiber material flows through the bottom openings 9 are shown in the Figure 1The fiber material flows are indicated by arrows, with the first of, here, five fiber material flows in transport direction A being designated with the reference symbol F for the sake of clarity. The bottom openings 9 are recesses in the bottom of the transport line 4 and can, for example, have a rectangular cross-section. For the sole purpose of clearer graphical differentiation from the bottom of the transport line 4, the bottom openings 9 are shown with dashed lines in Figure 1.

[0026] In the transport direction A, between each pair of adjacent bottom openings 9, a closure element coupled to an actuator, here merely an example, a flap 10, is arranged. Specifically, each flap 10 adjoins the bottom opening 9 upstream of the two bottom openings 9 and can be pivoted between an open and a closed position about a vertical pivot axis 12 by means of a coupled actuator 11. In the open position, the fiber material can pass through the respective flap 10, thus allowing flow through the transport line 4. In the closed position, the transport line 4 is blocked downstream of the closed flap 10. The flaps 10 are designed as plate-shaped shut-off valves and are spaced less than 500 millimeters from the nearest upstream bottom opening 9.

[0027] The actuator 11 of each flap 10 comprises a pneumatically operated pressure cylinder, which is controlled by a connected control unit 13. The control unit 13 can be a line controller that monitors and controls the operation of the device. During operation, the control unit 13 receives signals regarding the activity states of the individual textile machines. For this purpose, the control unit 13 can be connected to the controllers (not shown) of textile machines 1.1, 1.2, 1.3, 1.4, 1.5, and 1.6. When all six textile machines 1.1, 1.2, 1.3, 1.4, 1.5, and 1.6 are processing the fiber material and are in regular operation, all flaps 10 are in the open position.

[0028] The closed position of at least one of the flaps 10 only needs to be approached if at least the last textile machine 1.6 in the transport direction A is malfunctioning and therefore fails as a recipient of the fiber material, as described in detail below.

[0029] In the Figure 1 The first scenario depicted involves a disruption in the operation of the last textile machine 1.6 in transport direction A. This disruption could be caused, for example, by a break in the fiber spool produced from the fiber material or by maintenance work. Consequently, the last textile machine 1.6 is no longer available to receive the pneumatically fed fiber material at strand end 14 of transport line 4. This can quickly lead to a blockage of strand end 14 and the filling chute 3 of the last textile machine 1.6.

[0030] Especially in the event of an unplanned malfunction on the last textile machine 1.6, an operator often does not have enough time to close the nearest upstream flap 10 before the strand end 14 becomes blocked. To reliably prevent blockage, the control unit 13 actuates the actuator 11 of the flap 10, which is located upstream of the last textile machine, to move it into the closed position. The closed flap is marked with the reference numeral 10.c. To detect malfunctions in the operation of the last textile machine 1.6 at an early stage, the control unit 13 can be connected to the control system of the last textile machine 1.6. The textile machine 1.6 can have at least one sensor, for example, a belt sensor, a speed sensor, or the like, to detect a belt break, a standstill, etc. The other textile machines 1.1, 1.2, 1.3, 1.4, 1.6, etc., can also be connected to the control system.5 can include such a control unit coupled with the control unit 13 and sensors. Additionally or alternatively, the actuators 11 can be controlled manually by the operator, for example via an operating unit connected to the control unit 13.

[0031] In the Figure 2 is a second scenario of the device from the Figure 1 The diagram shows situations where the operation of the two textile machines 1.5 and 1.6, the last in the transport direction A, is disrupted. It is evident that the flap 10.c, located upstream of the two textile machines 1.5 and 1.6, which are arranged directly one after the other in the transport direction A (i.e., a group of textile machines experiencing a malfunction), is closed. The flap 10, the last in the transport direction A, which is located in the isolated strand end 14 upstream of textile machine 1.6, can, however, be in the open position, as shown here, or closed.

[0032] The Figure 3Figure 1 shows a device for pneumatically feeding fibrous material to a plurality of textile machines 1.1, 1.2, 1.3, 1.4, 1.5, 1.6 according to a second embodiment of the present invention, which is similar to that described in Figure 1. Figure 1 and 2 largely corresponds, so reference is made to the above description regarding the similarities. Identical or modified details are marked with the same reference symbols as in the Figure 1 and 2 The difference lies in the feeding of transport line 4, which can occur from two opposite directions. The first direction of transport is indicated by arrow A and the second direction by arrow B.

[0033] The transport line has two inlets 5.1 and 5.2. The first inlet 5.1 is connected to a first fiber processing machine 6.1 via a first material transport fan 7.1, which defines the first transport direction A. The second inlet 5.2 is connected to a second material transport fan 7.2, which defines the second transport direction B, via a second fiber processing machine 6.1. Thus, the device can be connected to two different opening or cleaning lines of the cleaning department. The outlets are the bottom openings 9 of the transport line 4, located between the inlets 5.1 and 5.2, to which the filling chutes 3 of the textile machines 1.1, 1.2, 1.3, 1.4, 1.5, and 1.6 are connected.

[0034] To divide the transport line 4 into two line sections 15.1, 15.2, each with one of the line inlets 5.1, 5.2, the two flaps 10.1d, 10.2d, located between two adjacent bottom openings 9, are in their closed position. The flaps closed for division are marked with the reference numbers 10.1d, 10.2d. Thus, the flaps 10.1d, 10.2d represent the temporary line ends 8.1, 8.2 of the respective line section 15.1, 15.2. It can be seen that, for example, the middle flaps 10.1d, 10.2d are closed, so that three of the textile machines 1.1, 1.2, 1.3 or 1.4, 1.5, 1.6 are connected to each line section 15.1, 15.2. To divide the transport line 4, another pair of adjacent flaps 10 could also be closed to provide a different distribution than the equal distribution of the textile machines across line sections 15.1 and 15.2 shown. During further operation, the control unit 13 holds the flaps 10.1d and 10.1d closed.2d is closed to divide the transport line 4 and, in case of malfunctions on at least one last textile machine 1.3, 1.4, only controls the remaining flaps 10.

[0035] In the Figure 3A scenario is shown in which, in the first group of textile machines 1.1, 1.2, and 1.3, the last textile machine 1.3 in the first transport direction (A) is malfunctioning. Consequently, the flap 10.1c, located upstream of the last textile machine 1.3, is in its closed position. In the second group of textile machines 1.3, 1.4, and 1.5, the last two textile machines 1.4 and 1.5 in the second transport direction (B) are malfunctioning. Consequently, the flap 10.2c, located upstream of the last two textile machines 1.4 and 1.5, is in its closed position. In this way, blockage of the strand ends 14.1 and 14.2 is prevented in both groups, and the textile machines 1.1, 1.2, and 1.6, located upstream of the closed flaps 10.1c and 10.2c, can continue to operate without interruption.

[0036] For both devices and all scenarios, the closed flaps 10.c, 10.1c, and 10.2c can be reopened once the fault has been rectified. For example, the operator can restart the malfunctioning textile machine after the fault has been resolved. Preferably, the control unit 13 only reopens the respective flap after stable production has been achieved. Reference sign

[0037] 1 Textile machine 2 Hall floor 3 Filling chute 4 Conveyor line 5 Line inlet 6 Fiber processing machine 7 Material transport fan 8 Line end 9 Floor opening 10 Flap 11 Actuator 12 Swivel axis 13 Control unit 14 Strand end 15 Line section A. Transport direction B. Transport direction F. Fiber material flow

Claims

1. Device for pneumatic feeding of fibre material to a plurality of textile machines (1) configured as carding machines or roller cards by means of filling chutes (3) upstream of the textile machines (1), said filling chutes being connected to a shared pneumatic conveying line (4) running above the filling chutes (3), wherein the conveying line (4) for connection to the filling chutes (3) between the line inlet (5) and conduit end (8) of said conveying line comprises a bottom opening (9) for each filling chute (3), wherein a fibre processing machine (6) can be connected to the line inlet (5) via a material conveying fan (7), characterised in that the conduit end (8) is permanently closed, wherein a shutoff device (10) connected to an actuator (11) is arranged in a direction of conveying (A) between, in each case, two of the bottom openings (9) which are arranged adjacent to each other, wherein the respective shutoff device (10) borders a bottom opening (9), lying upstream in each case, for the two bottom openings (9) arranged adjacent to each other and allows flow through the conveying line (4) when the shutoff device is open and prevents flow when it is closed; and a control unit (13) is connected communicatively to the textile machines (1) and the actuators (11) and configured so that, in the event of a fault in at least one of the last textile machines (1.6) in the direction of conveying (A), the next upstream shutoff device (10.c) is moved from the open position to the closed position by means of the corresponding actuator (11).

2. Device for pneumatic feeding of fibre material to a plurality of textile machines (1) configured as carding machines or roller cards by means of filling chutes (3) upstream of the textile machines (1), said filling chutes being connected to a shared pneumatic conveying line (4) running above the filling chutes (3), wherein the conveying line (4) for connection to the filling chutes (3) comprises a bottom opening (9) for each chute, wherein the bottom openings (9) between a first line inlet (5.1), to which a first fibre processing machine (6.1) is connected via a first material conveying fan (7.1) dictating a first direction of conveying (A), and a second line inlet (5.2), to which a second fibre processing machine (6.2) is connected via a second material conveying fan (7.2) dictating a second direction (B) of conveying, characterised in that in at least one of the two opposite directions of conveying (A, B), an individual shutoff device (10) connected to an actuator (11) is arranged adjacently downstream to each bottom opening (9), said shutoff devices, independently of each other, allowing flow through the conveying line when open and preventing it when closed; and a control unit (13) is connected communicatively to the textile machines (1) and the actuators (11) and is configured to keep at least one shutoff device (10.1d; 10.2d), arranged between two adjacent bottom openings (9), for dividing the conveying line (4) into two conduit sections (15.1; 15.2) by means of the corresponding actuator (11) closed, and, in the event of a fault in at least one of the last textile machines (1.3; 1.4, 1.5) in the respective direction of conveying (A; B), the next upstream shutoff device (10) in the direction of conveying (A; B) is moved from the open position to the closed position by means of the corresponding actuator (11).

3. Device according to claim 2, characterised in that, in the two conveying directions (A, B), one of the shutoff devices (10) connected to an actuator (11) is arranged adjacently downstream to each bottom opening (9).

4. Device according to claim 1 or 2, characterised in that the shutoff devices (10) are designed as valves, in particular plate-shaped butterfly valves, which are pivotable around vertical pivot axes (12) in the conveying line (4) from the open position to the closed position, and vice versa, by means of the actuator (11).

5. Device according to one of the claims 1 to 4, characterised in that a distance between the respective bottom opening (9) and the respective adjacent shutoff device (10) when closed is no more than 500 millimetres.

6. Method using a device according to claim 1, wherein the method includes the following: - pneumatic feeding of fibre material to the textile machines (1) by means of the material conveying fan (7), wherein fibre material is pneumatically conveyed through the conveying line (4) in a direction of conveying (A) directed towards the conduit end (8); - Processing by the control unit (13) of signals relating to activity statuses of the textile machines, wherein - during operation of the textile machines (1), during which the textile machines (1) process the fibre material, the control unit (13) holds the shutoff devices (10) in their open position or moves them to the open position by means of the actuators, and - in the event of a fault in at least one of the last textile machines (1.6) in the direction of conveying (A), the control unit (13) moves the next shutoff device (10.c) upstream of the faulty textile machine (1.6) in the direction of conveying (A) from the open position to the closed position by means of the corresponding actuator (11).

7. Method using a device according to claim 2, wherein the method includes the following: - Division of the conveying line (4) into the two conduit sections (15.1, 15.2), to each of which one of the material conveying fans (7.1; 7.2) is connected and each of which includes one of the bottom openings (9), wherein the control unit (13) keeps at least one of the shutoff devices (10.1d; 10.2d) closed, or moves it to the closed position, by means of the corresponding actuator (11); - pneumatic feeding of fibre material to the textile machines (1) by means of the two material conveying fans (7.1; 7.2), wherein fibre material is pneumatically conveyed through the two conduit sections (15.1; 15.2) in the two opposite directions of conveying (A; B); - processing by the control unit (13) of signals relating to activity statuses (1) of the textile machines, wherein - during operation of the textile machines (1), during which the textile machines (1) process the fibre material, regardless of the at least one shutoff device (10.1d; 10.2d), kept closed, for dividing the conveying line (4), the control units (13) holds the further shutoff devices (10) in their open position, or moves them to the open position, by means of the actuators, and - in the event of a fault in at least one of the last textile machines (1.3; 1.4, 1.5) in the respective direction of conveying (4), the control unit (13) moves the next shutoff device (10.1c; 10.2c) upstream of the faulty textile machine (1.3; 1.4, 1.5) in the direction of conveying (A, B) of the respective conduit section (15.1; 15.2) from the open position to the closed position by means of the corresponding actuator (11).