JPH0318485B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a dust remover that is incorporated into, for example, a spinning plant.

(Prior art) In the cotton opening machines of spinning plants, raw cotton contains a large amount of impurities such as short fibers, leaf residue, seed residue, mud powder, etc. Foreign matter is removed mechanically, and relatively fine cotton dust such as short fibers and small leaf residue is removed using a cage roller or the like.

The cage roller is formed of a perforated plate or a wire mesh into a cylindrical shape, and is configured to rotate while sucking exhaust air from outside to inside, and also serves to convey air between machines. Cage rollers can be used continuously for long periods of time by removing dust that adheres to their surfaces.

As such conventional technology, Japanese Patent Application Laid-Open No. 48-5070
There is something disclosed in the publication No. This conventional technology removes dust by circulating exhaust air from the outside to the inside of the cage roller, and blows the air radially outward from a duct installed inside the cage roller to remove dust from the outside of the cage roller. This removes the dust that has been removed, and sucks up the removed dust with a suction hood on the outside of the diameter.

(Problems to be Solved by the Invention) In the above-mentioned prior art, the suction hood is fixed, so it can only be used in a rotating type, and the semicircular filter is fixed to efficiently collect dust. It is difficult to use it for things like this.

One possible method for removing dust attached to this fixed semicircular filter is to place a suction hood at the center of curvature of the filter and remove the dust attached to the inner circumferential surface of the filter while rotating the suction filter. In this case, the suction hood does not face the filter for half of one rotation, resulting in a problem that the dust removal efficiency decreases.

In addition, recently, cotton harvesting has become mechanized, and leaf cake and seed cake have become smaller, and they are often entangled in cotton dust, making it difficult to remove them mechanically. Therefore, from fiber to leaf cake,
It is necessary to separate seed cake short fibers, etc., but the conventional cage rollers described above not only have a dust removal effect but also transport between machines, and therefore the cage rollers rotate quickly and prevent air from being discharged from the mesh. The cage roller enters the cage at an angle, making it difficult to remove dust sufficiently.
Even if the tables are arranged in series, it is difficult to improve the dust removal efficiency, and it is also difficult to take out the collected dust.

(Means for Solving the Problems) The present invention uses a suction hood 28 that rotates inside to suction and remove dust separated by a fixed arc-shaped filter 20 with an inner circumferential surface 20a facing upwind. In this way, the first problem can be solved, and a screen 6 for preliminary dust removal is provided on the windward side of the circular arc filter 20, and a wire mesh screen vertical wall portion 6a of this screen 6 prevents a relatively large amount of cotton from being blown. The long fibers, leaf residue, etc. are separated, and these are further separated into usable long fibers and impurity leaf residue, etc. at the inclined bottom wall portion 6b of the perforet screen, and the impurity leaf residue, etc. is removed by the suction hood 28. By making it possible to collect and take out the dust, the second problem mentioned above can also be solved.

That is, in the first specific configuration of the problem solving means of the present invention, the support shaft 21 is arranged and fixed at the center of curvature of the arc-shaped filter 20 with the inner circumferential surface 20a facing upwind. A cylindrical shaft 25 is fitted to the cylindrical shaft 25 so that the filter 20 can be freely rotated.
A plurality of suction hoods 28 are provided at equal intervals in the circumferential direction and adjacent to each other in the axial direction for suctioning and removing adhering dust from the inner circumferential surface 20 a of the support shaft 21 . 22, and an opening 30 that communicates with the through hole 22 and communicates with each suction hood 28 only while the suction hood 28 faces the filter 20.

Furthermore, the second specific configuration of the problem solving means is as follows:
A damper 7 communicating with the cotton feeding fan device 17 is arranged on one side of the dust removal chamber 5, and this damper 7 is connected to the swinging means 1.
An arc-shaped wire mesh screen standing wall 6a having a center of curvature about the vertical axis 10 is disposed in front of the damper 7 in the spraying direction, and the lower part of this standing wall 6a A perforated screen inclined bottom wall part 6a which is coarser than the standing wall part 6a is arranged in a downwardly inclined shape toward the damper 7, and a dust removal chamber 19 is formed outside this inclined bottom wall part 6b, and inside this dust removal chamber 19. A concave circular arc filter 20 is arranged on the windward side, and a support shaft 21 is arranged at the center of curvature.A cylinder shaft 25 is fitted onto this support shaft 21 so that the filter 20 can be freely rotated. Suction hood 2 that sucks and removes adhering dust from the inner peripheral surface 20a
8 are provided at equal intervals in the circumferential direction and adjacent to each other in the axial direction, and a suction path 29 is formed in the support shaft 21 and the cylindrical shaft 25 for communicating the suction hood 28 facing the filter 20 with the suction means 24. This is what is happening.

(Function) When the cotton blowing air ejected from the damper 7 is blown at high speed and at a substantially right angle to the arcuate wire mesh screen vertical wall portion 6a, the vertical wall 6a allows fine short fibers to pass through and is relatively large. Prevents the passage of fine cotton and cotton dust. In addition, in the vertical wall section 6a, the fibers and leaf residue, etc. are untangled by the impact of the spraying and fall naturally, and the leaf residue, etc. passes through the rough holes of the perforated screen inclined bottom wall section 6b. The long fiber quality cotton is separated from leaf residue and the like and taken out. Since the damper 7 is swung from side to side by the swiveling means 13, the position where the exhaust air hits also moves sequentially from one end of the vertical wall portion 6a to the other end, allowing the fibers, leaf residue, etc. to fall easily.
Since the curvature of the arc-shaped vertical wall portion 6a is centered on the vertical axis 10 of the damper 7, the speed at which the cotton blowing air hits is approximately the same at all positions, and the dust removal action is performed under approximately the same conditions.

After primary dust removal by this perhole screen 6 and separation of good cotton, the passing air containing dust such as leaf lees and seed lees enters a dust removal chamber 19 and is sent to an arc-shaped filter 20. This is where the second dust occurs. In the arc-shaped filter 20, fine dust adheres and accumulates on the inner circumferential surface 20a facing upwind, and is removed by suction by the rotating suction hood 28.
The plurality of suction hoods 28 provided on the cylindrical shaft 25 rotate, but each suction hood 28 is connected to the suction path 29 and communicated with the suction means 24 only while facing the filter 20. It does not have a suction effect while it is not facing. A plurality of suction hoods 28 are provided at equal intervals in the circumferential direction and adjacent to each other in the axial direction, and at least one suction hood 28 is always connected to the filter 2.
Suction hood 2 facing 0 and not facing
No suction force is applied to the suction hood 8, and that suction force is transferred to the opposing suction hood 28 to enhance dust suction.

(Example) Hereinafter, an example of the present invention will be described based on the drawings.

The dust removing device 1 shown in FIGS. 1 to 3 is a device in which a first dust removing device 2 for performing primary processing and a second dust removing device 3 for performing secondary processing are arranged in series. is used, for example, to remove cotton dust from the cotton blowing air after defibration treatment.

The first dust remover 2 is arranged at the top of the device frame 4, and a screen 6 is provided on one side and the bottom of the dust removal chamber 5.
is stretched, and a damper 7 is arranged on the side facing the vertical wall portion 6a.

The vertical wall portion 6a of the screen 6 is a wire mesh screen formed in an arc shape, and the bottom dust portion 6b is made of perforated screen and slopes downward from the lower part of the vertical wall portion 6a toward the damper 7. A cotton outlet 8 is provided on the side. The mesh of the inclined bottom wall 6b is opened more coarsely than that of the vertical wall portion 6a.

The damper 7 is a guide tube with a rectangular or circular cross section, and has a vertical shaft 10 pivoted on a mounting portion 9 protruding from the device frame 4.
Fixed. The vertical axis 10 is located at the center of curvature of the wire mesh screen vertical wall portion 6a, and an arm 11 is fixed to the upper part of the vertical axis 10.

Reference numeral 13 denotes a swinging means fixed to the outer surface of the mounting part 9, and the arm 1 is mounted at an eccentric position of a disc 15 fixed to the motor 14.
A rod 16 connected to the arm 11 is pivotally supported, and the rotation of the motor 14 moves the rod 16 and the arm 11.
and the damper 7 can be swung via the vertical shaft 10. The swing range of the damper 7 is such that the damper 7 is
This is the range A that extends from one end of a to the other end.

Reference numeral 17 denotes a fan device, which feeds the cotton dust-containing air sucked from a cotton opener or the like into the cotton dust chamber 5 from the mounting part 9, and is in communication with the damper 7, which directs the cotton air into the cotton dust chamber 5. The liquid is sprayed onto the surface of the vertical wall portion 6a through the guide 7.

The cotton blowing air is blown substantially uniformly from one end to the other end of the vertical wall portion 6a of the screen 6 by swinging the damper 7 from side to side. Short fibers, long fibers, leaf residue, etc. contained in the cotton blowing air are blown at high speed and approximately at right angles to the vertical wall portion 6a, and the fine short fibers pass through the mesh together with the high-speed wind to form long fibers, leaf residue, etc. The long fibers, leaf residue, etc. collide with the wire mesh, and the impact loosens the entanglement and causes the damper 7
When the subsequent cotton blowing air is no longer fed due to the change in direction, the cotton falls naturally from the vertical wall portion 6a due to gravity.
The long fiber quality cotton passes through the inclined bottom wall 6b and enters the cotton outlet 8.
fall to

Relatively large leaf lees, seed lees, dust, etc. pass through the rough slanted bottom wall portion 6b and fall into the dust removal chamber 19 where the second dust remover 3 is disposed. The short fiber-containing high-speed wind flowing into the upper part of the dust removal chamber 19 is taken out to the outside through an unillustrated exhaust fan.

The second dust remover 3 has an arc-shaped filter 20 fixed to the device frame 4 at the lower part of the dust removal chamber 19, and this filter 20 is made of non-woven fabric or the inclined bottom wall 6a.
It is made of a perforated plate with finer mesh.

The substantially semicircular filter 20 is fixed in a concave shape on the windward side, that is, the inner circumferential surface 20a is oriented toward the windward side, and a support shaft 21 is disposed at the center of curvature thereof. This support shaft 21 has a through hole 22, one end is fixed to the device frame 4, the one end projects outside from the device frame 4, the through hole 22 is connected to a duct 23, and the suction It communicates with a fan (suction means) 24.

A cylindrical shaft 25 is rotatably fitted onto the support shaft 21, and the cylindrical shaft 25 is rotationally driven by a motor 27 via a chain transmission means 26 at an end opposite to the duct 23.

A plurality of suction hoods 28 are provided on the cylinder shaft 25. Each of the suction hoods 28 is formed into a fan shape with a widening tip, and has a thin slit-shaped suction port 28a opened at the tip, which faces the inner circumferential surface 20a of the filter 20 with a slight gap therebetween.

The plurality of suction hoods 28 are arranged at equal intervals in the circumferential direction of the cylindrical shaft 25 and adjacent to each other in the axial direction, and since there are two suction hoods in the embodiment, the phase is shifted by 180° in the circumferential direction, and one suction hood 28 is facing the filter 20 while the other is not.

A suction hood 2 is attached to the support shaft 21 and the cylindrical shaft 25.
8 and the suction fan 24
9 is formed. This suction path 29 is connected to the support shaft 21
The suction hood 28 is made up of a through hole 22 having an axial center, and an opening 30 that communicates the through hole 22 with each suction hood 28 . still,
The interior of the suction hood 28 communicates with the interior of the cylindrical shaft 25 through an opening thereof, and the opening of the cylindrical shaft 25 also forms a part of the suction path 29 . As shown in FIG. 1, the opening 30 of the support shaft 21 opens at an angle smaller than half the circumference of the support shaft 21, and from the time when the tip of the suction hood 28 faces the filter 20, the opening 30 opens at an angle smaller than half the circumference of the support shaft 21. It is configured so that it communicates with the inside of the suction hood 28 only until the end of the suction operation, and can perform suction action only when facing the filter 20.

The openings 30 corresponding to the plurality of suction hoods 28 are formed in the same phase in the circumferential direction of the support shaft 21, and although the suction hoods 28 have different phases from each other, the phases when performing a suction action are the same. If there are two suction hoods, when one suction hood is performing a suction action, the other suction hood is not facing the opening 30 and the suction action is at rest. Therefore, the suction force by the suction fan 24 is always applied to only one suction hood.

Although three or more suction hoods 28 may be provided, it is preferable that the suction hoods 28 be an even number, with the same number on the suction action side and the rest side.

By facing the filter 20, the suction hood 28 suctions relatively large dust adhering to the inner peripheral surface of the fixed filter 20, collects the dust through the suction fan 24, and stores it in the plastic bag 31. The collected air is discharged after passing through the filter 20 through the exhaust fan 32.
to the atmosphere from the inter-wall space 33, or
or even sent to a finer dust remover.

(Effects of the Invention) According to the present invention described in detail above, in the second dust remover 3, since the arc-shaped filter 20 has the inner circumferential surface 20a facing upwind, it can be used almost uniformly over the entire length in the axial direction. The filter 20 has a circular arc shape, and a cylinder shaft 25 is rotatably arranged at the center of its curvature via a fixed support shaft 21. Since the suction hood 28 is provided on the shaft 25, the filter 20
It is easier to manufacture and install than the cylindrical shape, and the rotation support of the suction hood 28 can be ensured, and furthermore,
A plurality of suction hoods 28 are provided around the cylindrical shaft 25 at equal intervals in the circumferential direction and adjacent to each other in the axial direction, and each suction hood 28 is attached to the suction means 24 only while each suction hood 28 faces the filter 20 on the support shaft 21. Since the opening 30 is formed so that the suction hood 28 communicates with the filter 20, the suction action can be performed only while the suction hood 28 is facing the filter 20, and it can be stopped when the suction hood 28 is not facing the filter 20. It is now possible to remove dust adhering to the surface of the filter, without wasting suction power, and with the filter 20.
The suction force of the suction hood 28 facing the can be increased, and the dust removal efficiency can be increased.

In addition, the second dust remover 3 and the first dust remover 2 in front of it
This first dust remover 2 uses a damper 7 to blow the cotton air containing cotton dust etc. at high speed and at right angles to the arc-shaped wire mesh screen vertical wall 6a, so that fine particles such as short fibers can be removed. Dust can be passed through the vertical wall portion 6a along with high-speed wind, and relatively large long fibers, leaf residue, etc. can be blocked from passing through to effectively perform a separation action, and furthermore, leaf residue, seed residue, etc. can be entangled with the fibers. Even if the cotton dust is blown, it can be loosened by the impact of the spray, and since the damper 7 swings left and right around the vertical axis 10, the cotton dust loosened by the vertical wall part 6a will fall naturally due to the absence of a trailing wind. A sloped bottom wall part 6a is provided which slopes downward from the lower part of the vertical wall part 6a toward the damper 7, and this sloped bottom wall part 6b
Since the vertical wall portion 6a is coarser than the vertical wall portion 6a, leaf residue etc. loosened from the fibers can pass through the inclined bottom wall portion 6a, and can be reliably separated from long fiber fine cotton. Therefore,
The leaf lees, seed lees, etc. separated from the cotton blowing air are
The suction hood 28 of the dust remover 3 collects dust and allows it to be taken out of the device, and the combination of the first and second dust removers 2 and 3 improves the efficiency of processing the cotton blowing air and removes leaf residue, etc. It is possible to facilitate the post-processing of dust.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is a sectional front view, FIG. 2 is a sectional view taken along the line - in FIG. 1, and FIG.
FIG. 3 is a sectional view taken along the line -- in FIG. 1. DESCRIPTION OF SYMBOLS 1...Dust remover, 3...Second dust remover, 6...Screen, 6a...Vertical wall section, 6b...Slanted bottom wall section, 7...Damper, 19...Dust removal chamber, 20...Filter, 21 ... Support shaft, 24 ... Suction fan (suction means), 25 ... Suction cylinder, 28 ... Suction hood,
29...Suction path.

Claims (1)

[Claims] 1. A support shaft 21 is arranged and fixed at the center of curvature of an arcuate filter 20 with an inner circumferential surface 20a facing upwind, and a cylindrical shaft 25 is fitted onto this support shaft 21 to drive rotation. A suction hood 2 is provided on the cylindrical shaft 25 to suction and remove adhering dust from the inner circumferential surface 20a of the filter 20.
8 are provided at equal intervals in the circumferential direction and adjacent to each other in the axial direction. A dust remover characterized in that an opening 30 is formed that communicates with the suction hood 28 only while the hood 28 faces the filter 20. 2. A damper 7 communicating with a cotton feeding fan device 17 is disposed on one side of the dust removal chamber 5, and the damper 7 is swingable from side to side around the vertical axis 10 via a swinging means 13, so that the blowing of the damper 7 is An arc-shaped wire mesh screen vertical wall portion 6 having the vertical axis 10 as the center of curvature is located forward in the mounting direction.
a, and a damper 7 is placed from the lower part of this vertical wall portion 6a.
A perforet screen inclined bottom wall portion 6b which is coarser than the standing wall portion 6a is arranged in a downwardly inclined shape to the side, and a dust removal chamber 19 is formed on the outside of this inclined bottom wall portion 6b.
In this dust removal chamber 19, a concave circular arc filter 20 is arranged on the windward side, and a support shaft 21 is arranged at the center of curvature of the filter. A plurality of suction hoods 28 for sucking and removing adhering dust from the inner circumferential surface 20a of the filter 20 are provided at 25 at equal intervals in the circumferential direction and adjacent to each other in the axial direction.
The suction hood 28 facing the suction means 24
A dust remover characterized by forming a suction path communicating with the dust remover.