JPH04245928A - Device for separating from cotton fiber mass in spinning preparatory device foreign matter particularly heavy material such as metal piece, wood piece, corrugated cardboard piece and stone - Google Patents

Abstract

PURPOSE: To provide an apparatus for separating foreign bodies from a fiber flock stream that can be used inside the spinning preparation, particularly in the places where the air flow ratio fluctuates in the conduit for transferring the materials. CONSTITUTION: The apparatus for separating foreign bodies from cotton fiber flocks in spinning preparation comprises a pneumatic conduit (9) which leads through an inlet conduit (10) to a separating zone providing a deflection of the air stream (9a, 9b), an outlet conduit (11) removing the cleaned fiber material where at least one opening is formed in the separation zone. The air flow in the inlet conduit (10) and separating zone is regulated, for example, using an air branch line (14), the quantity of air in the line (14) being adjusted as by an adjustable throttle (15) in dependence upon the quantity of air flowing through the inlet conduit (10).

Description

[Detailed description of the invention]

0001

[Industrial Field of Application] The present invention provides a means for communicating with a separation zone,
It comprises an inflow channel for supplying the fiber material to be purified by means of air, a diversion section for changing the direction of the transport flow, and an outflow channel for discharging the purified light fiber material, which removes foreign matter, in particular from the cotton fiber mass during the spinning preparation process. The present invention relates to a device for separating heavy parts such as metal pieces, wood pieces, cardboard pieces, stones, etc., in which the separation zone is provided with at least one opening.

0002

BACKGROUND OF THE INVENTION Known devices (heavy part separation devices) remove foreign objects that are heavier than the fiber mass, regardless of their material. The textile material that is not purified in that case also falls off. The main air flow with the fiber mass is directed upwards at right angles. Heavy parts cannot be carried. The heavy parts fall into the collection bin. This device is integrated into the material transfer pipe, in which the air ratio is constant.

0003

OBJECTS OF THE INVENTION The object of the present invention is to eliminate the above-mentioned drawbacks and to be able to use the material transfer pipe even in places where the air ratio fluctuates, especially inside the spinning preparation device. The object of the invention is to provide a device of the kind mentioned at the outset.

0004

This object is achieved by the features of claim 1.

[0005]

Owing to the ability to adjust the amount of air, the device of the present invention can be used in locations where the air ratio of the clearer varies. This device is used according to regulations, especially upstream of the forward point of the clearer line, to allow early removal of heavy sections. That is, it is preferably arranged behind the bale opener and in front of the mixer. Each bale opening machine varies the air flow rate according to the quantity of product and, by virtue of the different suction lengths, also according to the location of the working tower with the cutter device. In air-fed mixers, the throughput varies due to the necessarily occurring differences in filling pressure. Despite this variation in air ratio, the device according to the invention can preferably be used immediately after the bale opener and before the mixer. In this way, even if the amount of air in the transfer pipe is different behind the bale opener and in front of the mixer, a constant amount of air flows through the heavy partial separator and
This amount of air also supports the entire fiber material to be transported at the same time.

[0006] Preferably, at the point where the air branch pipe connects to the inlet channel, a fiber mass/air separation surface is provided which has an opening having a width smaller than the size of the fiber mass. Preferably, the other end of the air branch pipe is connected to the outflow passage. Preferably, a measuring sensor is provided in the inlet channel for measuring the amount of air passing through. Preferably, a device for regulating the amount of air, such as a throttle valve, is incorporated in the air branch pipe. Preferably, the measuring sensor is connected via a control device to a setpoint value regulator having a drive for the throttle valve. Preferably, the other end of the air branch pipe is connected to a suction point, such as a suction filter, an air conditioner, etc. Preferably the device is placed between the bale opener and the mixer. Preferably the outflow passage is connected to a suction source. Preferably, a device for separating metal impurities is connected upstream of the device for separating heavy parts, in which a metal detector is arranged outside the diverting means for diverting the impurities, and the fibrous mass is disposed between the metal detector and the diverting means. It is transportable by gravity between the deflecting means. An air riser pipe having at least one diversion is preferably provided between the device for separating metal impurities and the device for separating heavy parts. Preferably the riser pipe is arranged vertically and has a turning section. Preferably, the riser pipe is connected to an opening through which fresh air can enter from the outside air.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be explained in detail below using examples shown in the drawings. FIG. 1 shows a spinning preparation device having a bale opening machine 1, such as the Blendmart BDT manufactured by Zürtzler, which has a multi-mixer 4, a fine opener 5, a card feeder 6, and a card 7. code 1
Denoted by a is a row of fiber bales. Between the bale opening machine 1 and the multi-mixer 4, a heavy part separation device 3 of the present invention is arranged. A metal separator 2 is provided between the heavy part separator 3 and the bale opener 1. The machines of the clearer device are connected to each other by pneumatic mass transfer pipes 8.

[0008] The heavy partial separation device 3 is provided with a pneumatic supply pipe 9, which is formed as a vertically rising pipe, with turning portions 9a and 9b provided at each end thereof. ing. The supply pipe 9 communicates with a horizontal inflow passage 10.
is continuous with the vertical outflow passage 11 via the turning section 10a. The inlet passage 10 has a separation zone 10 open at the bottom.
b is formed, and a foreign matter collection container 13 is installed below it via a chute 13a.

In the region of the turning section 9b, a filter surface 12 is provided as a fiber mass/air separation surface, via which the end of an air branch pipe 14 (bypass) is connected to the inflow channel 10. has been done. The other end of the air branch pipe 14 communicates with the outflow passage 11 of the air transfer pipe 16 . A rotatable throttle valve 15 is incorporated in the air branch pipe 14, which adjusts the amount of air B in the air branch pipe 14 in accordance with the amount of air passing through the inflow passage 10 and/or the supply pipe 9. Can be done.

The metal separating device 2 is arranged below the capacitor 24 and has an inductive detection coil 25 which is connected to a swingable flap 28 via a controller 26.
It is electrically connected to the actuator 27 of. The flap 28 and the chute 29 are arranged vertically below the detection coil 25 and the capacitor 24, so that the fiber material (arrow G) falls freely into the chute 29 and from there reaches the suction pipe 9d. If the fiber material G contains metallic foreign matter, the flap 28 swings and the fiber flow is diverted to a waste container 30 arranged on the side of the chute 29. The flap 28 then returns to its original position.

According to FIG. 2, a measurement sensor 17 (air amount measuring device) having a measurement mask 17a for measuring the amount of air passing therethrough is arranged in the inflow passage 10. The measuring sensor 17 is connected via a controller 18 to an actuator 19 that acts on the rotary link 15a of the throttle valve 15. During operation, the fiber mass-air mixture (arrow A) passes through the pipe 9. Part of the air volume (arrow B) is on the filter surface 1
2 into the air branch pipe 14. Remaining fiber mass -
The air flow (arrow C) passes through the inflow channel 10 and the outflow channel 11 and joins the air flow B in the transfer pipe 16 to form a fiber mass-air flow (arrow D).

As shown in FIG. 1, the turning portion 9a is an opening 9
It communicates with the outside air via c, and fresh air (arrow E) is supplied via the opening. If the suction air flow by the mixer 4 oscillates, this oscillation is detected by the measuring sensor 17 so that the throttle valve 15 (controlled via the controller 18 and the actuator 19) adjusts the cross-sectional area of the air branch 14. Expand or reduce. At the same time, a large amount or a small amount of air E is sucked through the opening 9a accordingly.

According to FIG. 3, the air branch pipe 14 communicates with the suction side of a ventilator 20, and the exhaust side of the ventilator is connected with a pipe 21 that connects to a filter (not shown) or an air conditioner (not shown). The pipe 16 is connected to a ventilator 22, and the mixer 4 is connected downstream of the ventilator. The pipe 9 is connected to the suction side of the bale opening machine 1. The amount of material passing through the inflow passage 10 (material passage) is maintained constant. In the air branch pipe 14 (exhaust), the throttle valve 1
5 is regulated via a controller 18 and an actuator 19. The air branch 14 separates the large amount of exhaust air from the upstream bale opener 1 into two air streams, in particular an exhaust stream F and a blowing air stream D for the mixer 4 . This basic quantity distributor is
This is necessary when the mixer ventilator 22 also exhausts the bale opening machine 1 at the same time. This is because the amount of material air is 1 for the open bale machine.
This is because the amount of air is much smaller than that of

The second ventilator 20, which sends the exhaust gas F to the air conditioner, is necessary to ensure more reliable suction by the bale opening machine 1. Here, in conjunction with the heavy part separation device 3, the first
For this reason, the necessary air distributors are used at the same time, thereby ensuring the same air flow rate as the inlet channel (material channel) 10 required to reliably separate the heavy parts in the heavy part separation device 3. be done. In this way, the fluctuating back pressure of the mixer 4 is compensated, which furthermore ensures that the fiber material, which would otherwise tend to clog in front of the mixer 4, passes through the heavy partial separation device 3. In addition to the above-mentioned advantages regarding reliable movement of the fiber material and ensuring a constant air ratio, the device according to the invention also has the advantage of saving space due to the erected pipes.

According to FIG. 4, an air supply pipe 9d is connected to the riser pipe 9, in which a further controllable throttle valve 23 is arranged.

According to FIG. 5, one end of an air branch pipe 31 is connected to the outflow passage 11. At the connection point 32 where the air branch pipe 31 is connected to the outflow channel 11, a fiber mass/air separation surface 12 is provided, for example a sieve, a slit surface with openings smaller in width than the fiber mass. The other end of the air branch pipe 31 is connected to a ventilator 33. In the region of the separation surface 12, the outflow channel 11 and the air branch pipe 31 are arranged inclined to each other at a slight angle in the flow direction. This results in a favorable flow profile. Furthermore, the separation surface 12 is cleaned. The length of the separation surface 12 in the flow direction is about 100 to 200 cm,
Therefore, it is large enough to separate a large amount of air.

It is also possible to arrange an axial clearer (not shown) downstream of the outflow channel 11, for example AXI-FLO from Zürzler. Air amount distribution means 11, 12, 3
1 is a pneumatic fiber mass transfer pipe 8 (see FIG. 1),
For example, it can be installed in front of the fiber mass feeder 5a for the clearer 5, or in front of the card feeder 6 in front of the card 7.

[0018]

As is clear from the above description, since the apparatus according to the present invention is constructed as described above, it can be used even in locations where the air ratio of the material transfer pipe fluctuates.

[Brief explanation of the drawing]

1 is a schematic side view of the device according to the invention in a spinning preparation machine (clearer and card); FIG.

FIG. 2 is an explanatory diagram of a device with an air measuring element in the inflow channel, a controller and an actuator (throttle valve) in the air branch pipe;

FIG. 3 is an explanatory diagram showing another ventilator connected to the air branch pipe.

[Figure 4] Other actuators (throttle valves) before the inflow passage
FIG.

FIG. 5 is a side view of the device with the fiber mass guide channel, the drum and the detection plate.

[Explanation of symbols]

1...Open bale machine 2...Equipment to separate metal impurities 3... Device to separate foreign matter 4...Multi mixer 9...Rising pipe 9a, 9b...conversion section 9c...opening 10...Inflow passage 11...Outflow passage 12...Fiber mass/air separation surface 14...Air branch pipe 15, 23... Throttle valve 17...Measurement sensor 18...Control device 19...Drive device 20, 22...Suction source 25...Metal detector 28...Means of conversion

Claims (19)

[Claims] 1. An inflow channel communicating with a separation zone and supplying the fiber material to be purified by means of air, a diversion section for changing the direction of the transport flow, and an outlet channel for discharging the purified light fiber material, In a device for separating foreign matter, in particular heavy parts such as metal pieces, wood pieces, cardboard pieces, stones, etc. from the cotton fiber mass in a spinning preparation device, the inflow channel (10) is provided with at least one opening in the separation zone. A spinning preparation step characterized in that one end of the air branch pipe (14) is connected and the amount of air (B) in the air branch pipe (14) is adjustable according to the air flow passing through the inflow passage (10). A device that separates foreign objects, especially heavy parts such as metal pieces, wood pieces, cardboard pieces, and stones, from cotton fiber lumps. Claim 2: The air branch pipe (14) is connected to the inflow passage (10).
2. Device according to claim 1, characterized in that, at the point (9b) connected to the fiber mass, a fiber mass/air separation surface (12) is provided with an opening having a width smaller than the size of the fiber mass. 3. Claim 1, characterized in that the other end of the air branch pipe (14) is connected to the outflow passage (11).
Or the device described in 2. 4. Device according to claim 1, characterized in that a measuring sensor (17) is provided for measuring the amount of air passing into the inlet channel (10). 5. A throttle valve (1) is provided in the air branch pipe (14).
5. The device according to claim 1, characterized in that it incorporates a device for adjusting the amount of air as in item 5). 6. The measurement sensor (17) is connected to the control device (1).
6. The device according to claim 1, wherein the device is electrically connected via a setpoint adjuster with a drive (19) of the throttle valve (15). 7. The other end of the air branch pipe (14) is
7. Device according to any one of claims 1 to 6, characterized in that it is connected to a suction source (20), for example a filter to be suctioned, an air conditioner or the like. 8. Any one of claims 1 to 7, characterized in that it is disposed between the bale opening machine (1) and the mixer (4).
Equipment described in Section. 9. Device according to claim 1, characterized in that the outflow channel (11) is connected to a suction source (22). 10. A device (2) for separating metal impurities is connected upstream of the device (3) for separating heavy parts, and a metal detector (25) is connected to a turning means (28) for changing the direction of the impurities. placed on the outside, the fiber mass is detected by a metal detector (25
) and the deflection means (28) by gravity. [Claim 11] Device for separating metal impurities (2)
and the device (3) for separating heavy parts, a pneumatic riser pipe (9) having at least one deflection part (9a, 9b) is provided.
10. The device according to any one of 10 to 10. 12. A riser pipe (9) connected to a machine (1; 2) provided upstream is arranged vertically,
12. Device according to claim 1, characterized in that the device also has two turning parts (9a, 9b). 13. A throttle valve (2) is provided in front of the inflow passage (10).
13. Device according to any one of claims 1 to 12, characterized in that further devices for adjusting the air volume, such as 3), are arranged. [Claim 14] The rising pipe (9) has an opening (
14. Device according to any one of the preceding claims, characterized in that it is connected to 9c), through which fresh air flows in from the outside air. 15. The device according to claim 1, wherein a pneumatic fiber/air transfer pipe is provided, in which the outlet passageway (11) is provided with an air branch pipe (31).
A device characterized in that one end of the is connected to the 16. The air branch pipe (31) is connected to the outflow passage (1).
16. Any one of claims 1 to 15, characterized in that the point (32) connected to 1) is provided with a fiber mass/air separation surface (12) having an opening with a width smaller than the size of the fiber mass. The device according to item 1. 17. Device according to claim 1, characterized in that the other end of the air branch pipe (31) is connected to a suction source (33), such as a ventilator. 18. Claim 1, characterized in that in the region of the separating surface (12) the outflow channel (11) and the air branch pipe (31) are arranged inclined to one another at a slight angle in the flow direction. 18. The device according to any one of 17 to 17. 19. Device according to claim 1, characterized in that the length of the separating surface (12) in the machine direction is approximately 100 to 200 cm.