JPS5898120A - Dust collecting apparatus - Google Patents

Abstract

PURPOSE:To enhance the reliability of the titled apparatus, in an apparatus for collecting dust such as cotton dust of automatic loom, by providing plural rectification plates around a cylindrical dust collecting filter to swirl light dust to prevent the clogging of a filter. CONSTITUTION:Plural rectification plates 20 are provided around the dust collecting filter 7 of a dust collecting apparatus so as to be inclined along a sucked air stream direction flowed into a dust collecting tank 8. By this structure, a component of a force is acted on the air stream sucked into the dust collecting tank 8 from a suction pipe 9 by the rectification plates 20 to push said air stream to an outside direction and the air stream is swirled along the inner surface of the dust collecting tank 8. Therefore, light dust or spark dust contained in cotton dust is impinged on the surfaces 20a of the rectification plates 20 and swirled along the inner surface of the dust collecting tank 8 while withdrawn from the dust collecting filter 7 to be fallen to the bottom part thereof. As the result, the clogging of the dust collecting filter 7 due to light dust is prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a dust collector suitable for collecting fluff generated during weaving in an automatic loom such as a span IIh machine.

This type of automatic loom is a loom that inserts weft threads using an air jet, shuttlecock, gripper, etc., but during weaving, countless pieces of fluff, that is, dust-like lint floating in the air, are generated. If this fluff adheres to the product during V-weaving and is woven into it, it will cause uneven coloring and weaving defects, reducing the quality of the product, and will also damage all parts of the machine, especially oil supply parts such as bearings and cams. The treatment of fluff in this type of automatic loom is extremely important because it can adhere and interfere with normal operation, and further endanger the health of workers working in the weaving room.

As a conventional method for treating fluff, there is a method in which a whirlwind machine or the like is rotated on two sides of the loom to blow the fluff off the top of the loom. However, with this method, the fluff is only temporarily moved away from the loom and is still floating in the weaving chamber, so it cannot be a complete fluff treatment. Therefore, it is desirable to have a dust collector that suctions and captures fluff, but since fluff is highly spread and highly adhesive,
If conventional general dust collectors were used as they were, the dust filters would become clogged in a very short period of time, and the filters would have to be replaced frequently, making handling difficult. Not suitable for practical use. In addition, with conventional dust collectors, the condition of the filter's mesh δ^ cannot be confirmed from the outside, so
It is easy to forget when it is time to replace the filter, making it less effective.

In order to eliminate the disadvantages of the conventional contact system described above, a dust collection tank with a suction pipe tangential to the cylinder part is installed coaxially around a dust collection filter with a cylindrical outer diameter of 100 mm, which is attached to the suction side of the exhaust fan. A dust collector equipped with a dust collector has been proposed. FIGS. 1 and 2 are diagrams showing an example thereof. In the figure, 1 is an exhaust fan. The exhaust fan 1 includes an exhaust fan 2 and an electric motor 3 that rotates the exhaust fan 2. The exhaust fan 2 has a structure in which an intake port 6 is provided at the shaft core of the side end surface opposite to the side end surface on which the electric motor 3 is placed.

7 is a dust collection filter. The dust filter 7 is formed into a cylindrical shape, and one end in the axial direction is connected to the intake port 6.
It is connected to the side end surface of the exhaust fan 2 so as to surround it. Therefore, the air sucked into the exhaust fan 2 is always subjected to the filtering action of the dust collecting filter 7.

8 is a dust collection tank. The dust collecting tank 8 is formed into a cylindrical shape with a larger diameter than the outer shape of the dust collecting filter 7, and is coaxially encased with the dust collecting filter 7, with the opening end in the axial direction facing the exhaust fan 2. It is removably attached to the side end. Further, one or more suction pipes 9 are connected to the outer peripheral part of the cylindrical part 8a of the dust collection tank 8 along the tangential direction thereof. The suction pipe 9 is connected, for example, by a flexible pipe to a place where fluff occurs in a span loom or the like.

Said exhaust fan 1. The dust collection filter 7 and the dust collection tank 8 are positioned vertically. Several 3 to 4 casters 11 are placed on the bottom of the dust collection tank 8, and 3 to 4 casters 11 are placed on the outer circumferential surface of the exhaust fan l.
~4 wooden support legs 12 are connected. The support leg 12 has a length such that when the lower end thereof is positioned on the installation surface E, the caster 11 floats by a height H above the installation surface E under a force L.

Therefore, under normal conditions, the entire structure consisting of the exhaust fan 1, dust filter 7, and dust tank 8 is vertically supported by the support legs 12. Further, removable connectors 13 such as hooks are attached to two to four locations on the outer circumference of the exhaust fan 1, and the dust collection tank 8 is suspended from the exhaust fan 1 by the connectors 13.

As described above, when the exhaust fan 1, the dust collection filter 7, and the dust collection tank 8 are arranged vertically, the space occupied in the lateral direction becomes the cross-sectional area. This plane area is much smaller than the plane area when the exhaust fan 1, the dust collection filter 7, and the dust collection tank 8 are arranged laterally. Therefore, the installation space is significantly reduced compared to the conventional one, and it becomes possible to realize a highly practical dust collector in a place where the spatial space is small, such as a weaving room. Furthermore, as shown in the figure, the dust collection tank 8 is removably suspended from the exhaust fan l by a connector 13, and several casters 11 are placed on the bottom of the dust collection tank 8 at a height H from the installation surface E. Support leg 1 so that it floats
2, so when removing the fluff filled in the dust collection tank 8, release the connector 13, remove the dust collection tank 8 from the exhaust fan l, and remove the exhaust fan 1 and the dust collection filter 7. While supported by the support legs 12, only the dust collection tank 8 can be transported while rolling on casters 11, and fluff can be removed at a predetermined location. Therefore, the work of disposing of the fluff and the subsequent reinstallation of the dust collector 8 becomes extremely easy.

Furthermore, in this embodiment, the electric motor 3 constituting the exhaust fan 1 is disposed approximately at the center of the partition plate 14 of the exhaust fan 2, and the air flow from the exhaust fan 2 is arranged around the periphery of the partition plate 14. A suitable number of through holes 15 are provided at appropriate intervals for the flow of water, and a rectifying plate 16 is provided along the through holes 15 of the partition plate 14J.
It is guided to the through hole 15 and the rectifier plate 16 through the right angle current transformation plate 14a, and further to the partition plate 14. Above the rectifying plate 16 and the electric motor 3
The electric motor 3 is surrounded by an outer plate 17.
It has a structure in which an air exhaust passage 18 is formed with an annular space around it as an outlet. With such an exhaust mechanism, the exhaust air from the exhaust fan 2 passes through the ventilation hole 15 and passes through the rectifier plate 16.
The motor 3 is rectified so as to rotate in the same direction by
It is discharged from the convoluted space around in the direction of arrow (C), that is, as if rotating around the electric motor 3. Therefore, it is possible to avoid problems such as, for example, fly fluff adhering to the ceiling of the weaving room being stimulated by the exhaust air and falling down.

In the dust collector having the above structure, the exhaust fan l is rotationally driven,
When dust collection is performed, since the suction pipe 9 is provided in the tangential direction of the outer circumference of the dust collection tank 8, the dust sucked in from the suction pipe 9 as shown by the arrow (A) is transferred to the dust collection filter 7. In the annular space 19 formed between the dust collecting tank 8 and the dust collecting tank 8, a turning motion as shown by the arrow (b) is applied, and the dust collecting filter 7 rotates around the surface without adhering to the surface. This swirling effect is more pronounced in lighter objects such as fluff. As a result, clogging of the dust collection filter by fluff becomes extremely difficult, and a high dust collection ability is exhibited over a long period of time. Moreover, the suction force becomes stronger as it gets closer to the suction port 6, that is, the closer it gets to the exhaust fan 2, so the fluff can perform the above-mentioned swirling motion while being given the suction force in the direction of the exhaust fan 2. Become. Therefore, when the amount of fluff collected increases, the fluff accumulates sequentially along the direction P from the side end surface of the exhaust fan 2 toward the end surface 8b of the dust collection tank 8, and during that time, the fluff accumulates. The part of the dust collecting filter 7 on which no deposits are deposited performs a normal dust collecting and suction function. It is only after the inside of the annular space 19 is completely filled with fluff that a monkey effect can no longer be expected. For this reason, the use efficiency of the annular space 19, which serves as the dust collection space, is extremely high, and the amount of fluff collected and captured is dramatically improved. A dust device can be realized.

In addition, as long as there is dust collection ability, the sucked fly fluff continues to make the above-mentioned swirling movement, so by checking the presence or absence of swirling movement, the degree of dust collection ability can be determined.

It is possible to reliably determine when to remove the fluff stuck in the annular space 19. By constructing part or all of the dust collection tank 8 from a transparent material such as acrylic, the swirling motion of the fluff can be visually and reliably distinguished from the outside.

” - As mentioned above, this dust collector is extremely effective in treating fluff. However, when light dust with a significantly smaller negative part than fluff is inhaled, this light dust goes straight from the suction pipe 9 to the dust filter 7 without undergoing the above-mentioned swirling motion. Therefore, there was a problem in that the dust collecting filter 7 quickly became clogged. In addition, when used as a device to collect spark pollen dust generated during polishing with a grinder, etc., the inhaled spark pollen dust may stick to town combustible dust such as fluff that has already been inhaled and stuck. There was a risk of ignition and combustion.

The present invention solves this problem and prevents the dust collection filter from clogging even when collecting not only fluff but also light dust with a significantly smaller mass, and also prevents ignition and combustion even if spark pollen dust is inhaled. The purpose of the present invention is to provide a high-output and highly reliable dust collector that does not cause any problems.

In order to achieve the above object, the dust collector according to the present invention includes a dust collection tank having a receiving pipe in the tangential direction of the cylinder part, around the dust collection filter having a cylindrical outer shape, which is disposed on the suction side of the exhaust fan. The present invention is characterized in that a plurality of rectifying blades are provided coaxially and inclined in the direction of the intake air flow around the dust collecting filter.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The content of the present invention will be specifically described below with reference to the accompanying drawings, which are examples. FIG. 3 is a partially cutaway front view of the dust collector according to the present invention, and FIG. 4 is a plan sectional view taken along the line B--B in FIG. 3. In the figures, the same reference numerals as in FIGS. 1 and 2 indicate the same components. As shown in the figure, in the present invention, a plurality of rectifying blades 2 are arranged around the dust collecting filter 7 at appropriate intervals along its axial direction.
0 is placed. This straightening blade 20 is provided so that the intake air flowing into the dust collection tank 8 from the intake pipe 9 is inclined along the direction C (b). In other words, the surface 20a where the intake air is in front in the direction (b). =1 If the angle between the surface of the dust filter 7 is α and the angle between the back surface 20b and the surface of the dust collecting filter 7 is β, then α>β
It is installed at an angle so that

When such a rectifier blade 20 is provided, a component force is applied to the airflow sucked into the dust collection tank 8 from the suction pipe 9 by the rectifier blade 20 to push it outward, and the airflow is directed toward the dust collection tank 8. It begins to rotate along the inner surface of the

Therefore, not only does the fluff have a dust-collecting effect, but even if the intake air contains light moving dust or spark dust, which has a significantly smaller mass than the fluff, these particles will not collide with the surface 20a of the rectifying blade 20. , while being kept away from the dust collection filter 7, it turns along the inner surface of the dust collection tank 8 and falls to the bottom thereof. As a result, clogging of the dust collection filter 7 due to light moving dust is prevented.

Further, the spark dust collides with the rectifying blade 20 and is moved away from the dust collection filter 7 while swirling along the inner surface of the dust collection tank 8, falls to the bottom and cools down, so that ignition and combustion due to the spark dust is prevented. This will significantly improve reliability.

Moreover, with the rectifying blade 20, even if fluff or dust adheres to other parts, hardly any fluff or dust will adhere to the base (d) of the rectifying blade 20 for a long period of time. Therefore, the dust collection operation can be continued for a long period of time through this base (d).

Furthermore, the straightening blade 20 promotes the swirling movement of the intake air flow, increasing the dust collection ability. FIG. 5 is a diagram showing the measured data. In the figure, the horizontal axis shows the air volume (m3
/m1n) and the static pressure (mmAq) is plotted on the vertical axis. In the figure, a curve Ll shows the characteristics of the dust collector shown in FIGS. 1 and 2, and a curve L2 shows the characteristics of the dust collector according to the present invention. As is clear from FIG. 5, the dust collector according to the present invention exhibits superior dust collection ability as the air volume increases. In addition, in the case of a dust collector with the structure shown in Figures 1 and 2, the static pressure is 170 mmAq, and the air volume is 10 m/
In the dust collector according to the present invention, the air volume is 1.
The speed was increased by about 30% to 3.5 m/min, and it was confirmed that the dust collection capacity was significantly improved.

On the other hand, the flow rate in the dust collection tank 8 was measured by rotating a styrofoam ball with a diameter of 20 mm and a weight of 1.5 g, which was 280 times/min in the conventional device, but
In the device of the present invention, the flow rate increased to 340 times/m 1n, and it was confirmed that the swirling flow rate increased. Since this increase in flow velocity is the same as the increase in wind speed of the exhaust fan, it is natural that it is proportional to the increase in air volume.

In this embodiment, the rectifying blade 20 is a frame separate from the dust filter 7, and has a structure in which the dust filter 7 is removably fitted, but it has a structure in which it is directly attached to the dust filter 7. You can also use it as

As described above, the dust collector according to the present invention has a cylindrical dust filter installed on the suction side of the exhaust fan.
A dust collection tank having a suction pipe in the tangential direction of the cylindrical part is provided coaxially, and a plurality of rectifying blades are provided around the dust collection filter tilting in the direction of the intake air flow. The dust collection filter is difficult to clog even when it collects not only cotton but also light moving dust with a significantly smaller mass, and even if it inhales sparkling dust, it does not cause ignition and combustion. A dust collector with high output and high reliability can be provided.

[Brief explanation of the drawing]

FIG. 1 is a front view of a conventional dust collector with a partial defect, FIG. 2 is a side view of the same with a partial defect, FIG. 3 is a front view of a dust collector according to the present invention with a partial defect, and FIG. It is a plane sectional view on the BB line. 1.--Exhaust fan 7.Dust collection filter 8.--Dust collection tank 20.--Rectifier blade 2.Figure 3.Procedure amendment document 1. Display of the case 1982 Patent Application No. 195032 2 Name of the invention Dust collector 3 Person making the amendment Relationship to the case Patent applicant address 2-19-18 Dai, Kamakura City, Kanagawa Prefecture Name
Nishimura Electric Co., Ltd. Representative Tatsuo Nishimura 4, Agent 125 T1103 (600) 5
090 Address 1-37-2-5 Togane-cho, Katsushika-ku, Tokyo Date of amendment order March 5, 1980 6 Number of inventions increased by amendment 07, Amendment of
Target Shelf side of brief explanation of drawings in specification
In the 14th page, line 11 of the description of contents of the paper correction, "This is a plan sectional view taken along the line B-B in Figure 3." is replaced with "A plan sectional view taken along the line B-B in Figure 3," and in Figure 5. is a diagram showing actually measured data of air volume-static pressure characteristics. ” he corrected.

Claims (4)

[Claims] (1) A dust collection tank with a suction pipe is provided coaxially around a cylindrical dust collection filter attached to the suction side of the exhaust fan, and a dust collection tank with a suction pipe is provided in the tangential direction of the cylinder. A dust collector characterized by being provided with a plurality of rectifying blades that are inclined in the direction of airflow. (2) The dust collecting device according to claim 1, wherein the exhaust fan, the dust collecting filter, and the dust collecting tank are arranged in a vertical direction. (3) The dust collecting device according to claim 1 or 2, wherein at least a portion of the cylindrical portion of the dust collecting tank is transparent. (4) The dust collector according to claim 1, 2, or 3, wherein the exhaust fan has an exhaust mechanism that rotates around an axis to exhaust air.