CN115516145A

CN115516145A - Protective device for textile equipment

Info

Publication number: CN115516145A
Application number: CN202180033604.4A
Authority: CN
Inventors: 安德烈亚斯·泽博德卡; 马丁·多弗恩; 托马斯·巴尔文; 迈克尔·布罗德斯基; 克里斯蒂安·弗莱塔克
Original assignee: Trutschler Group Europe
Current assignee: Trutschler Group Europe
Priority date: 2020-05-12
Filing date: 2021-04-27
Publication date: 2022-12-23
Anticipated expiration: 2041-04-27
Also published as: EP4150140B1; DE102020112784A1; EP4150140A1; CN115516145B; WO2021228544A1

Abstract

An apparatus has a sensor (8) responsive to at least a predetermined fire gas. The sensor (8) is used on or in a section (2, 6, 17) of a textile machine such that a detection section of the sensor (8) faces a cavity (2 a, 6a, 16) of the section (2, 6, 17) to be detected. The textile device section (2, 6, 17) has the sensor (8) and a cavity (2 a, 6a, 16). The weaving device comprises such weaving device sections (2, 6, 17).

Description

Protective device for textile equipment

Technical Field

The invention relates to a protective device for textile equipment, in particular against possible fires and/or explosions.

Background

Textiles are processed to produce combustible or combustible materials such as cotton. In this case, friction occurs at different points, in particular between the material to be processed or the material to be transported and the processing elements (e.g. clothing rolls) of the textile machine and/or between the transport elements (e.g. tubes). The friction can cause the respective material to be heated to a temperature high enough to at least micro-ignite the combustible material, e.g., fibers. It is also possible for sparks to splash, for example, due to metallic foreign bodies or lumps, which can cause the combustible material to ignite slightly or to ignite crudely, and which is located behind the location where sparks are actually generated in the transport direction. If these materials are concerned with good fibres, they can deteriorate in colour due to the resulting sooting, resulting in undesirable rejects. If the material is a waste material in transit (for example fibre knots), i.e. in certain cases foreign bodies with contained fibre material, this can lead, in particular in the presence of waste bags, to explosions like flour dust explosions, which represent a great risk of harm to persons in the vicinity.

It is known from the prior art to use temperature-sensitive sensors. A disadvantage of these sensors is that they can only detect temperature or temperature changes and are slow. If the fibre material starts to micro-burn, this progresses very slowly, for example in the chamber of the mixer, until the air above the fibre material column is sufficiently hot. The material is particularly capable of very strongly suppressing temperature diffusion in the space. Whereby a whole batch of rejects can be produced from the initially good fibre material. It is also possible that a fire with a shoot can be detected very late in each machine. The consequence of this is that when a fire is detected, the machine itself has been so severely damaged that it must be repaired or completely replaced, which results in considerable costs and high costs. Furthermore, the aforementioned explosion risk problem persists and is associated at least with temporary stoppage of the associated machine.

Disclosure of Invention

The object of the invention is therefore to remedy the disadvantages mentioned.

This object is achieved by the subject matter of the independent claims. Advantageous variants are given in the dependent claims.

The present invention provides an apparatus having at least one sensor responsive to at least one predetermined fire gas. In the context of the present invention, fire gas refers to gas that is indicative of a micro-burning material or a fully combusted material. The sensor is used on or in a section of the textile machine such that the detection section of the sensor faces the cavity of the section to be detected. The detection of the presence of fire gases has the decisive advantage that the time delay for detection is usually significantly smaller than the time delay of the temperature sensor. I.e., the sensor of the present invention responds much earlier. This makes it possible, for example, to avoid the aforementioned explosion or to alert personnel, for example by means of an alarm device. The risk of damage to the machine of the textile apparatus is likewise reduced. In particular, even with a slightly burnt good fiber material, significantly fewer rejects are produced.

The detected fire gases preferably include carbon monoxide. Sensors responsive to carbon monoxide have the advantage that the fire gas is generated before the fire (or explosion). The fire gases are already generated when the combustible material begins to micro-ignite. The fire gases additionally or alternatively include carbon dioxide as a second important gas, which is produced when micro-ignition or combustion occurs. This improves the flexibility of use.

According toThe device of the invention may also comprise a plurality of the aforementioned sensors, thus creating a detection module. In this case, for example, one sensor can respond to carbon monoxide, while the other sensor responds to carbon dioxide. This increases the flexibility with respect to the fire gases to be detected. Thereby also standardized sensors can be used, which helps to keep costs at a low level. In this case, the device preferably comprises an evaluation device, for example a logical or circuit, which belongs to the output signal terminals of all sensors. This causes the device as a whole to sound at only one of these sensors

A detection signal is sent out. Reliability is improved if multiple sensors are provided that can detect the same fire gas or multiple same fire gases. In this case, the redundant sensors can therefore be visualized when they are standing still, for example by means of an alarm and/or an external display.

The device according to the invention furthermore preferably comprises a holding section. A sensor is mounted on the holding section. The holding section is for its part intended to be mounted on the aforementioned section of the textile apparatus. The holding section thus forms an adapter which can accommodate different types of sensors and which is structurally matched to the individual sections of the textile apparatus.

The detection section of the sensor is preferably covered by the holding section. The holding section has at least one through opening for itself, which extends from the outer side of the holding section facing away from the detection section to the detection section. The detection section or the sensor itself is thereby mechanically protected and the presence of fire gases can be detected continuously and safely by means of the through opening.

The holding section preferably comprises an edge section which delimits an associated one of the at least one through opening and is designed to reduce friction in the outer direction. This makes possible the use in a transport section, in which material (i.e. fibres and/or foreign bodies) is transported, for example, from one machine (e.g. a bale opener) to another machine (e.g. a cleaner) of the textile apparatus. Such a transport section is for example a transport pipe. This also reduces the risk of ignition of the material that rubs on the holding section, the device according to the invention itself being able to constitute a source of fire.

The friction-reducing portion is preferably constructed by means of a friction-reducing material and/or a friction-reducing profile. These are simple and low cost options for manufacturing the friction reducing portion.

According to the invention, a textile device section is also provided. This section has the aforementioned cavity and a device of the aforementioned device according to the invention, the sensor of which faces the cavity with its detection section. In the textile machine, a section is thus produced in which the detection of fire gases is effected. This section is advantageously an area which is particularly threatened by a fire or explosion, like the aforementioned collecting container.

The section according to the invention comprises a transport section for transporting material within the category of textile processing. These transport sections may be transport pipes, hybrid belts or similar components. The section may alternatively or additionally comprise a collecting section for collecting material within the textile processing category. These collection sections may be a waste container and a mixing chamber. The section may alternatively or additionally comprise a processing section for processing the fibrous material. These sections can be, for example, carding sections, drafting mechanism sections, cleaner sections, winding sections, combing sections, creels, sliver storage devices, flyer roving frames, spinning machines, material guides, waste guides and waste air guides. As a result, each zone of the spinning apparatus can be equipped with a device according to the invention; it can be universally applicable.

When a transport section is present, the detection section of the sensor is preferably directed opposite to the direction of movement of the transported material. This improves the detection of fire gases as the material moves.

In each of the aforementioned device sections, the detection section of the sensor preferably protrudes into the cavity, which improves the detection safety. The detection section optionally ends with an inner wall, which is advantageous with regard to friction for the material moving past. The detection section is in turn optionally arranged concavely with respect to the cavity. This facilitates the solution with the aid of the holding section.

In each of the preceding sections with a holding section, the holding section is fixed to the textile apparatus section such that it protrudes into the cavity. This improves detection and is particularly suitable for use when a collection container is present. The section according to the invention optionally ends flush with the inner wall bounding the cavity and thus forms a part of the inner wall. This solution is particularly suitable when there is material moving past. The section according to the invention is optionally again arranged concavely with respect to the cavity.

The weaving device section is preferably constructed by means of a weaving machine, a transport pipe and/or a waste container, or comprises these individually or in any combination between them. Each section of the weaving device can therefore be provided with a device according to the invention.

The weaving device section furthermore preferably has a release device. According to the invention, the release device is configured for performing a fire-retardant operation and/or an alarm operation upon activation. The device is also connected to a sensor so that the sensor activates the release device when it detects fire gases. When the release device comprises or is a fire extinguishing device, the fire retarding operation may comprise releasing a fire extinguishing substance, for example in the form of water. The alarm operation may take place with the activation of a signal light, as is known in textile machines. The alarm operation may also consist in informing a central controller or a control unit.

The invention further relates to a textile machine having one of the aforementioned textile machine sections.

Drawings

Additional features and advantages of the present invention are set forth in the description of the preferred embodiments that follows.

In the figure:

figure 1 shows a cleaner having a device according to an embodiment of the invention,

figure 2 shows in three views a transport pipe with a device according to a second embodiment of the invention,

figure 3 shows a bale opener having an apparatus according to an embodiment of the invention, and

fig. 4 shows two mixers each with a device according to an embodiment of the invention.

Detailed Description

Fig. 1 shows a textile machine 1 in the form of a cleaner of conventional construction. The flow of fibrous material from the left is led into the cleaner 1 from above through the tube 2 arranged on the left. The material passes through the detection section 3 for identifying foreign bodies in the material flow. Downstream is a separating device 4, for example in the form of a spray bar or a nozzle. The separated material is sent to a right-hand separation device arranged near the pipe 2, where the separated material is guided upwards through a channel 6 towards a collection container 7. The remaining material, i.e. the cleaned material flow, is guided further to the right and upwards out of the cleaning device 1 via a pipe 2 arranged to the right here below the cleaning device.

Here, preferably on a vertical section of the duct 6, a sensor 8 for detecting fire gases in the cavity of the duct 6 is arranged on the left. In the example shown, a carbon monoxide sensor is present.

In the upper region of the channel 6, which constitutes a connection to the upper end of the collecting container 7, a fire extinguishing device 9 is arranged. The extinguishing device opens with its end directed downward into the channel 6. When the sensor 8 detects fire gases, it triggers the fire-extinguishing device 9, for example by means of a higher-level controller, which is for example in the form of a threshold circuit, so that it can, for example, introduce a water jet into the connecting section between the channel 6 and the collecting container 7. In the example shown, the fire extinguishing device 9 can be an automatic fire extinguishing apparatus.

Fig. 2 shows a transport pipe which is equipped with a sensor 8 according to the invention. Fig. 2a shows the structure thus constructed in an exploded view. Fig. 2b shows the structure at the normal observer viewing angle. Figure 2c shows the structure in vertical section through the centre of the tube of figure 2a.

The tube 2 is circular in the example shown and has an annular inner wall 2a on the inside.

Here, the openings 2b are located in the upper region of the tubes 2, into which openings the screen elements 13 are inserted. The screen element 13 preferably ends flush with the inner wall 2a. The screen elements 13 have openings 13a which extend substantially transversely to the longitudinal extent of the tube 2.

The sensor 8 is arranged on the side of the screen element 13 facing away from the inner wall 2a. The sensor 8 has an adjusting section 8a. The adjusting section comprises, for example, latching projections which project toward the housing shell 10 and are arranged in a circular manner. The two

elements

8, 13 are placed in the housing 10, which is placed on the tube 2 in the region of the through opening 2 b. The housing shell 10 has on its inside an adjusting section 10a, which, according to fig. 2b, rests on the adjusting section 8a. By twisting the sensor 8, the rotational position of the sensor 8 relative to the housing shell 10 can be adjusted. The housing shell 10 also has a passage 10b on the underside, into which a screen element 13 is inserted. In order to be able to turn the sensor 8 about the housing shell 10, an adjusting element 12 is provided, which has a bolt head for actuation.

At its end facing the housing shell 10, the adjusting element 12 has a non-circular cross section, by means of which the adjusting element 12 is preferably inserted in a force-fitting and/or form-fitting manner into the adjusting section 8a of the sensor 8. Whereby the sensor 8 can be turned. By means of a corresponding latching by the actuating section 10a, the sensor 8 is latched in the corresponding actuating position.

As shown in fig. 2c, the opening 13a is rounded outwards towards the interior of the tube 2. This makes it impossible, or at least difficult, for the fibre material moving past to adhere to the through opening 13 a. The screen element 13 extends with its inner wall 13b pointing downwards in the example shown, ending with the inner wall 2a of the tube 2 (absclie β t).

Fig. 3 shows a textile machine 1 in the form of a bale opener. The principle structure of the bale opener 1 is known and will therefore not be described further. Gripper head 14 has an impact roller 15 on its underside in a known manner. Located above the impingement roller 15 are two opposing and upwardly extending, not shown, inner walls which guide the separated fiber material in the direction of a spiral hose 21 which opens at its upper end into the transport pipe 2. The transport pipe 2 is provided with a suction section by which the fibrous material separated by the impact roller 15 is conveyed away in the direction of the vertically extending pipe 2 arranged to the right. The sensors 8 facing the impingement roller 15 are illustratively located on two obliquely extending inner walls. This makes it possible to detect when the fibers are being removed from the fiber bale 22, for example, if the impact roller 15 runs too fast and thereby causes an excessive heating of the removed material or if it is brittle and thus a spark occurs.

A fire extinguishing device 9 is located at the upper end of the tube 2, which is triggered when the sensor 8 detects fire gases and releases a water beam, for example through a spout, to the impact roller 15.

In the region of the bend of the pipe 2 shown on the right, the sensor 8 is located in the lower diagonal section and the fire extinguishing device 9 is located in the upper diagonal section. Such an arrangement makes it possible to check whether the separated fibre material generates fire gases as a result of friction, which fire gases may be generated, for example, by rising temperatures and/or spark spitting. The extinguishing device 9 is here exemplified as an element which releases extinguishing gas, such as nitrogen, and which is released obliquely downwards.

Fig. 4a shows a textile preparation machine 1 in the form of a mixer. The mixer 1 is provided in the example shown with a conveyor belt arrangement which in the example shown has two

conveyor belts

18a, 18b. The fibre material is fed in a known manner through the left-hand tube 2 to 6 mixing chambers 16. The conveyed fibre material is conveyed in real time to the mixing chambers 16 by means of a deflecting section 17 which is rotatably mounted in the example shown. In the example shown, the left-hand deflecting portion 17 is open, so that the left-hand mixing chamber 16 is filled. The other five mixing chambers 16 are not filled in real time. An air duct 19 is arranged near the left side of the left-hand mixing chamber 16, through which air excess can be conducted away from the material entering the left-hand mixing chamber 16. A set of rollers is located below each mixing chamber 16, the rollers collectively constituting a roller mechanism 20. The conveyor belt 18a is located below the roller mechanism and the fibrous material from the mixing chamber 16 is preferably placed on the conveyor belt in a stack. The layered fibre material is guided out of the mixer 1 by a conveyor belt 18b arranged adjacent to the right. A sensor 8 is preferably arranged in each diverting section 17 and is directed in the open state (left mixing chamber 16) towards the flow of fibrous material. In the closed state (further mixing chamber 16), the sensors 8 point beyond the mixing chamber 16 in the direction of the transport path. It is thereby possible to detect whether the material located in the upper region of the mixer 1 contains possible fire gases. The sensor 8 is also preferably located in the steering area above the left side of the tube 2.

The extinguishing devices 9 are located at the upper inlet of each mixing chamber 16, respectively, and are activated when fire gases are detected in each mixing chamber 16. A further air duct 19 is located near the right side of the right-hand mixing chamber 16, through which duct excess air can be conducted away from the fibre material. The assembly consisting of the sensor 8 and the fire extinguishing device 9 is also located at the outlet at the lower right of the mixer 1. This makes it possible to detect the presence of fire gases at the outlet of the mixer 1 as well.

Fig. 4b shows a variant of the mixer 1 of fig. 4 a. There is a lack of conveyor belt below the roller mechanism 20. Instead, the mixing chamber 16 opens at the lower end into a transport pipe 2 for leading away the mixed fibre material. The narrow mixing chamber 16 is located very to the left. The right tube 2 has two sets of sensors 8 and extinguishing means 9. This improves the operational safety.

The present invention is not limited to the foregoing embodiments.

In certain cases, the assembly with the sensors 8 arranged locally, preferably downstream of the fire extinguishing device 9, can be provided on or in parts or elements of the textile apparatus. For example, the sensor 8 can be arranged on the inner side of the cover of the drawing frame, so that the sensor 8 can be used in any drawing frame, combing machine, textile machine and any lap winder.

Proceeding from the embodiment shown in fig. 2, the sensor 8 can also be arranged in a non-adjustable manner and in such a way that it can end flush with the surface of the transport element, for example the pipe 2 shown, surrounding the sensor by means of the outside. The sensor 8 may in turn protrude somewhat and be, for example, part of the diverted portion of the fibre material flow.

The screen element 13 may be configured to facilitate sliding.

The invention finally provides a very simple and universally applicable solution to enable very fast and effective detection and, in certain cases, elimination of fire development. This also reduces the risk of explosion mentioned at the outset.

List of reference numerals

1. Machine with a rotatable shaft

2. Transport pipe

2a inner wall

2b through opening

3. Probe segment

4. Isolation device

5. Separating device

6. Channel

6a cavity

7. Collecting container

8. Sensor with a sensor element

9. Fire extinguishing device

10. Shell cover

10a adjustment section

10b through opening

12. Adjusting element

13. Screen element

13a through opening

13b inner wall

14. Grabbing head

15. Impact roller

16. Mixing chamber

17. Steering segment

1Sa, b conveyor belt

19. Air tube

20. Roller mechanism

21. Spiral hose

22. Fiber bag

The claims (modification according to treaty clause 19)

1. A textile machine has a textile machine section (2, 6, 17) which has a cavity (2 a, 6a, 16) and a device which has at least one sensor (8) which is responsive to carbon monoxide and/or carbon dioxide and which is used on the textile machine section (2, 6, 17) or in the textile machine section (2, 6, 17) in such a way that a detection section of the sensor (8) faces the cavity (2 a, 6a, 16) of the textile machine section (2, 6, 17) which is to be detected.

2. Weaving device according to claim 1, comprising a transport section (2, 6) for transporting material within the textile processing category, a collection section (7) for collecting material within the textile processing category, and/or a processing section (20) for processing fibre material.

3. Weaving device according to claim 1 or 2, wherein the detection section, in the case of a transport section (2, 6), points counter to the direction of movement of the transported material.

4. Weaving device according to any one of claims 1 to 3, wherein the detection section projects into the cavity, ends flush with an inner wall bounding the cavity, or is arranged recessed with respect to an inner wall (2 b) of the cavity (2 a).

5. Weaving device according to any one of the preceding claims, having a plurality of sensors (8) capable of detecting carbon monoxide and/or carbon dioxide, respectively.

6. Weaving device according to one of the preceding claims, having a holding section (10, 13, 17) on which the sensor (8) is mounted in a stationary manner and which is configured for mounting on the section (2, 6).

7. Weaving device according to claim 6, wherein the detection section is covered by the holding section (13) and the holding section (13) has at least one through opening (13 a) extending from an outer side of the holding section (13) facing away from the detection section to the detection section.

8. Weaving device according to claim 6, wherein the holding section (10, 13, 17) comprises an edge section (13) which delimits the passage to which one of the at least one passage (13 a) belongs and which is configured in a friction-reducing manner in the direction of the outer side.

9. Weaving device according to claim 8, wherein the friction-reducing section is constructed by means of a friction-reducing material and/or a friction-reducing profile (13 a).

10. Weaving device according to claim 6, wherein the holding section (10, 13, 17) is fixed on the section (2, 6, 17) such that the holding section (10, 13, 17) protrudes into the cavity, ends flush with an inner wall (2 b) bounding the cavity (2 a), or is arranged recessed with respect to the cavity.

11. Weaving device according to any one of the preceding claims, configured to, or comprising, a transport tube (2) and/or a waste container (7).

12. Textile apparatus according to one of the preceding claims, further having a release device (9) which is configured for a flame-retardant operation and/or an alarm operation upon activation and is connected to the sensor (8) such that detection of fire gases activates the release device (9).

Claims

1. A device for the treatment of a human body by a human body,

it has at least one sensor (8) which is responsive to at least one predetermined fire gas, and

the sensor is used on or in a textile machine section (2, 6, 17) in such a way that a detection section of the sensor (8) faces a cavity (2 a, 6a, 16) of the textile machine section (2, 6, 17) to be detected.

2. The apparatus of claim 1, wherein the at least one fire gas comprises carbon monoxide and/or carbon dioxide.

3. The device according to one of the preceding claims, having a plurality of sensors (8) each configured according to claim 1.

4. The device according to one of the preceding claims, further having a holding section (10, 13, 17),

the sensor (8) is mounted in a stationary manner on the holding section and

the holding section is designed to be mounted on the section (2, 6).

5. The device of any one of the preceding claims, wherein

The detection section is covered by the holding section (13), and

the holding section (13) has at least one passage opening (13 a) which extends from the outside of the holding section (13) facing away from the detection section to the detection section.

6. The device according to claim 5, wherein the holding section (10, 13, 17) comprises an edge section (13) which delimits the associated one of the at least one through opening (13 a) and is designed in a manner that reduces friction in the direction of the outer side.

7. The device according to claim 6, wherein the friction-reducing portion is constructed by means of

Materials acting to reduce friction and/or

A profile (13 a) acting to reduce friction.

8. A textile apparatus section (2, 6, 17) has

Cavities (2 a, 6a, 16) and

the device according to any of the preceding claims, the sensor (8) of which faces the cavity (2 a, 6a, 16) with its detection section.

9. Weaving device section (2, 6) according to claim 8, comprising

A transport section (2, 6) for transporting material in the textile processing category,

a collecting section (7) for collecting material in the textile processing category, and/or

A processing section (20) for processing the fibrous material.

10. Weaving device section (2, 6, 17) according to claim 8 or 9, wherein the detection section, in the case of a transport section (2, 6), points opposite to the direction of movement of the transported material.

11. Weaving device section (2, 6, 17) according to one of claims 8 to 10, wherein the detection section

-projecting into said cavity, and projecting into said cavity,

ending flush with the inner wall bounding the cavity, or

Is arranged recessed with respect to the inner wall (2 b) of the cavity (2 a).

12. Weaving device section (2, 6, 17) according to one of claims 8 to 11, wherein

The device is constructed according to claim 6 or claim 7, and

the holding section (10, 13, 17) is fixed to the section (2, 6, 17) in such a way that the holding section (10, 13, 17)

-projecting into said cavity,

-ends flush with an inner wall (2 b) bounding said cavity (2 a), or

-is concavely arranged with respect to the cavity.

13. Textile apparatus section (2, 6, 17) according to one of claims 8 to 12, which is constructed by means of or comprises the following objects

-a textile machine (1),

transport pipe (2) and/or

A waste container (7).

14. Weaving device section (2, 6, 17) according to one of claims 8 to 13, furthermore having a release device (9),

configured to operate as follows upon activation

Flame-retardant operation and/or

An alarm operation, and

-connected to the sensor (8) so that the detection of fire gases activates the release device (9).

15. Weaving device with a weaving device section (2, 6, 17) according to one of claims 8 to 14.