JPS6126381Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a pneumatic cotton collection device.
More specifically, the present invention relates to a device installed in a spinning factory for suctioning and recovering the Newmacz cotton collected in the Newmachus box of the Newmachu clearer.

(Prior Art) As shown in Fig. 1, in a spinning factory, a pneumatic clearing machine 2 or A traveling cleaner 3 is provided for each spinning machine 1.

For example, the spinning machine New Machikkuriyara 2,
It mainly consists of a pneumatic box 4, a pneumatic tact 5, a pneumatic file 6, and the like.

The pneumatic box 4 is provided at the end of the spinning machine 1 and has a suction fan 7. Newmabox 4
A pneumatic duct 5 extends from the spinning machine 1. A pneumatic filter 6 is connected to the pneumatic duct 5.

A pneumatic filter 6 is provided for each weight 8, and is a suction port that sucks up waste cotton that is generated, and also suctions the end of the thread when it breaks to prevent the thread from getting entangled with the adjacent weight 8. It is.

The waste cotton sucked from the pneumatic film 6 passes through the pneumatic duct 5 and is collected in the pneumatic box 4 as pneumatic waste cotton.

The waste cotton in the pneumatic box 4 is collected by the pneumatic box cotton collection device 9. That is,
The pneuma waste in the pneuma box 4 is suctioned and collected by the cotton collector 11 through the main duct 10.

〓〓〓〓〓
However, tens or even hundreds of spinning machines 1 are installed in parallel, and it is difficult to suction and collect waste cotton from the pneumatic boxes 4 provided for each spinning machine 1 at the same time using one cotton collector 11. be. Therefore, a damper 12 that can be opened and closed is provided between the main duct 10 and the pneumatic box 4, and the damper 12 is sequentially opened and closed at predetermined time intervals to collect the pneumatic boxes individually.

The opening/closing operation of the damper 12 was performed using external power such as an air cylinder (for example,
As a device using an electromagnetic valve, the Special Publication Publication No. 43-902
(The one described in the publication is well known).

The traveling cleaner 3 is a device that moves around the spinning machine 1 and suctions and cleans the fluff accumulated on the machine stand. The cotton is collected via a duct 13 to another cotton collector 14 .
That is, the discharge port 15 of the traveling cleaner 3
By docking the and the suction port 16 of the cotton collection duct 13 for the traveling cleaner, both ports 15 and 16 are opened in communication, and waste cotton from the cleaner 3 is sucked into the duct 13 and collected by the cotton collection machine 14. .

In the conventional pneumatic cotton collecting apparatus described above, the dampers are opened and closed using external power such as an air cylinder, and therefore air cylinders must be provided for each of the dozens or hundreds of dampers.
Along with this, installation of air piping and solenoid valves,
In addition, a plurality of electrical wirings and a control device are required, resulting in extremely high costs.
Furthermore, maintenance is difficult and a large amount of power is consumed, which is not desirable in terms of energy saving.

Therefore, as a method for solving the above-mentioned problems, for example, the method described in Japanese Patent Application Laid-Open No. 48-9036 is well known. This conventional type includes a main damper that is rotatably supported in the middle of the duct and equipped with an energizing means that always keeps the duct closed, and one side that is connected to the bottom pressure side of the duct via an opening/closing switching means. It was characterized by consisting of an auxiliary damper chamber that communicated with the other side and opened to the atmosphere, and an auxiliary damper installed at the opening of the damper chamber so as to rotate simultaneously with the main damper shaft.

(Problems to be solved by the invention) Although the device described in the above-mentioned Japanese Patent Application Laid-open No. 48-9036 opens and closes the damper blades using a small amount of driving force, it is still necessary to switch the opening and closing of the solenoid, etc. The structure is complicated because it requires means and also requires the provision of a supporting damper and the like.

Therefore, an object of the present invention is to provide a device that does not require any external power, has a simple structure, and can perform opening and closing operations reliably.

(Means for solving the problems) In order to achieve the above object, the present invention takes the following measures. That is, the feature of the present invention is that the main duct 10 of the cotton collecting machine and the pneumatic box 4 provided in each spinning machine are connected via a damper 12, and the damper 12 is connected to the suction fan 7 of the pneumatic box 4. An automatic opening/closing valve body 21 is provided which rotates depending on a predetermined pressure difference between the pneumatic box side and the main duct 10 side that occurs when turning on and off, and the opening/closing valve body 21 is configured so that it does not open when the pressure difference is less than a predetermined value. The damper 12 is provided with a biasing means 24 for biasing the damper 12 in the closing direction, and the damper 12 is arranged so that its passage faces in the vertical direction, and a horizontal support shaft 20 is rotatably provided on one side of the passage. The opening/closing valve body 21 is attached to the support shaft 20, and the valve body 21 closes the passage while tilting upward at a predetermined angle with respect to a horizontal plane including the support shaft 20. The biasing means 24 is provided so as to open the passage by upward rotation from the state.
The arm 22 is fixed to the support shaft 20 so as to be substantially horizontal in the closed state of the valve body, and the arm 22
It consists of a weight 23 attached to the body so that its position can be freely changed.

(Function) According to the present invention, the inside of the main duct is always maintained at a predetermined negative pressure by the suction force of the cotton collector. When the suction fan of the pneumatic box is stopped, the difference in pressure between the pneumatic box and the main duct increases. This large pressure difference causes the damper's opening/closing valve body to automatically open. When the valve body opens, the waste cotton in the pneumatic box is suctioned and collected by the cotton collector through the damper and the main duct.

When the suction fan of the pneumatic box is started, negative pressure is created inside the pneumatic box, and the pressure difference between the pneumatic box side and the main duct side becomes small. Pressure〓〓〓〓〓
When the difference becomes smaller, the opening/closing valve body is closed by the biasing force resulting from the pressure difference plus the pressing force of the biasing means. This closed state is reliably maintained by the biasing means.

That is, in the present invention, the damper is opened and closed only by turning on and off the suction fan of each pneumatic box.

Further, according to the present invention, when the damper is opened and closed, the opening/closing valve body is provided at an angle, so that it can be fully opened and closed within a small rotation range compared to a valve that opens and closes on a horizontal plane. Moreover, since the arm of the biasing means is horizontal when the valve body is closed and tilted when it is open, the arm length of the moment from the spindle to the weight is the maximum when the valve body is closed. Long, shortest when open.

That is, the biasing means exerts a sufficient biasing force when the valve body is closed, and reduces the biasing force when the valve body is opened, thereby completely opening the valve body. Furthermore, since the weight can be freely changed in position, the biasing force can be adjusted.

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

Note that the schematic configuration diagram of the first embodiment of the present invention is the same as that shown in FIG. 1 used to explain the conventional example, so for convenience, FIG. The figures are shared, and the detailed explanations of the other parts except for the damper 12 are the same as the previous ones and will be used in place of the explanation of this embodiment.

In the first embodiment of the present invention shown in FIGS. 1 to 4, the damper 12 is interposed in the middle of the connecting duct 17 that connects the main duct 10 and the pneumatic box 4.

The damper 12 consists of a cubic box 18, and a connection duct 17 on the main duct side is provided on the top side of the box 18.
a is connected, and a connection duct 17b on the pneumatic box side is connected to the lower surface side of the box body 18.

The distal end of the connecting duct 17b on the pneumatic box side projects into the box body 18, and its end surface is formed into an inclined surface 19 cut off diagonally. This inclination angle θ is set at approximately 30° with respect to the horizontal.

A support shaft 20 is rotatably supported in the lower part of the box body 18 at a position corresponding to the lower end of the inclined surface 19. A blade-shaped opening/closing valve body 21 is attached to this support shaft 20.
One side of the is fixed.

The opening/closing valve body 21 contacts the inclined surface 19 to close the opening at the end of the connecting duct 17b on the pneumatic box side, and rotates upward about the support shaft 20 to open the opening.

One end of the support shaft 20 protrudes from the box body 18, and an arm 22 is fixed to the protrusion. The arm 22
is fixed to the support shaft 20 so as to be substantially horizontal when the on-off valve body 21 is in contact with the inclined surface 19.

A counterweight 23 is attached to the tip of the arm 22 so that its attachment position can be adjusted.

That is, the arm 22 and the weight 23 constitute a biasing means 24 that biases the on-off valve body 21 in the closing direction.

According to the first embodiment of the present invention, the suction fan 7 of the pneumatic box 4 is operated to suck waste cotton from the pneumatic film 6, and the waste cotton is collected in the pneumatic box 4 through the pneumatic duct 5.

The collected pneumatic cotton is sucked and collected by the cotton collector 11 through the damper 12 and the main duct 10, but while the suction fan 7 of the pneumatic box 4 is in operation, The connecting ducts 17a of both are under negative pressure, and the pressure difference between the two is small, so the on-off valve body 21 of the damper 12 is connected to the weight 2.
3, the waste cotton in the pneumatic box 4 is not sucked into the cotton collector 11.

When the suction fan 7 is stopped, the gauge pressure on the pneumatic box side becomes 0, and the pressure difference with the main duct 10 side increases. This large pressure difference causes
The opening/closing valve body 21 is opened by the weight 23 against the biasing force.

Due to this opening operation of the on-off valve body 21, waste cotton in the pneumatic box 4 passes through the damper 12, passes through the main duct 10, and is collected in the cotton collector 11.

Since the on/off operation of the suction fan 7 is performed intermittently and sequentially by the central control panel, a large number of dampers 12
They do not open at the same time, but open and close in sequence.

Traditionally, waste cotton from Numabox was collected manually.
This was done about once a day. Therefore, the waste cotton collected in the pneumatic box increases over time, thereby reducing the efficiency of the suction fan. For this reason, conventional suction fans have been provided with large-sized fans capable of sufficiently suctioning waste cotton from the pneumatic film even in the maximum cotton collection state.

However, in this embodiment, the damper 12 is opened and closed about once every hour, so that the waste cotton in the pneumatic box 4 is collected within a short period of time.
Therefore, the amount of waste cotton accumulated in the pneumatic box 4 is reduced compared to the conventional method collected manually, so that the suction fan 7 can also have a small capacity.

Since the opening/closing operation of the opening/closing valve body 21 of the damper 12 is performed with respect to the inclined surface 19 of approximately 30 degrees, the rotation range of the valve body 21 is sufficient to be approximately 60 degrees. In comparison, the damper 12 can be fully opened and closed within a small rotation range.

Further, the arm 22 of the biasing means 24 is connected to the opening/closing valve body 2
1, when it is closed, it is horizontal, and when it is open, it is tilted at an angle of about 60 degrees. Therefore, the length of the moment arm from the support shaft 20 to the weight 23 is the longest in the closed state and the shortest in the open state.

Therefore, when the on-off valve body 21 is in the closed state, the biasing means 24 sufficiently exhibits its ability to completely maintain the closed state. However, once the on-off valve body 21 begins to open due to the pressure difference, the biasing force is reduced to assist the opening operation, allowing the on-off valve body 21 to fully open.

What is shown in FIG. 5 is a second embodiment of the present invention, in which a damper 12 is integrally assembled to a pneumatic box 4. Further, this cotton collector 11 also serves as a cotton collector for the traveling cleaner 3, and therefore the main duct 10 is provided with a suction port 16 for the traveling cleaner.

(Effects of the invention) According to the invention, there is no need to use external power such as an air cylinder to open and close the damper as in the past, and the damper can be opened and closed only by turning on and off the suction fan of the pneumatic box.

Therefore, since parts such as an air cylinder are not required, costs can be reduced and construction work can be simplified. Furthermore, it has excellent effects such as easier maintenance and energy savings.

[Brief explanation of the drawing]

FIG. 1 is a schematic configuration diagram of a device that is used both to explain the conventional example and to explain the first embodiment of the present invention. FIG. 2 is a front view of a damper showing the first embodiment of the present invention.
The figure is an enlarged view of the same essential parts, FIG. 4 is a sectional view taken along the line -- in FIG. 3, and FIG. 5 is a schematic diagram showing a second embodiment of the present invention. 4...Numabox, 7...Suction fan,
10...Main duct, 12...Damper, 20...
Support shaft, 21...Opening/closing valve body, 22...Arm, 23
...Weight, 24...Biasing means. 〓〓〓〓〓

Claims (1)

[Claims for Utility Model Registration] The main duct 10 of the cotton collecting machine and the pneumatic box 4 provided in each spinning machine are connected via a damper 12.
An automatic opening/closing valve body 21 is provided which rotates depending on a predetermined pressure difference between the pneumatic box side and the main duct 10 side that occurs when the suction fan 7 is turned on and off. body 2
The damper 12 is provided with a biasing means 24 for biasing the damper 12 in the closing direction, and the damper 12 is arranged so that its passage faces in the vertical direction, and a horizontal support shaft 20 is rotatably provided on one side of the passage. The on-off valve body 21 is attached to the support shaft 20, and the valve body 21 closes the passage while tilting upward at a predetermined angle with respect to the horizontal plane including the support shaft 20. The biasing means 24 is provided to open the passage by upward rotation from the closed state.
The arm 22 is fixed to the support shaft 20 so as to be substantially horizontal in the closed state of the valve body, and the arm 22
A pneumatic box cotton collection device comprising a weight 23 attached to the body so as to be freely repositionable.