WO2017157266A1 - Automatic dust shaking method for bag-type dust removal device, and novel bag-type dust removal device - Google Patents

Abstract

An automatic dust shaking method for a bag-type dust removal device, and the bag-type dust removal device. In the automatic dust shaking method, dust filtering cloth is disposed above a dust collection region (11) and an air inlet (12), and the dust filtering cloth is a filtering cloth made from a flexible plastic material. By adding the flexible plastic dust filtering cloth (2) to a body (1) of a dust collection bag, the dust shaking function is automatically implemented by means of vertical movement of the flexible plastic dust filtering cloth (2) and the natural caving effect of the flexible plastic dust filtering cloth (2), in combination of release and break of the dust-containing air flow; and accordingly breathing and filtering functions of a dust filtering portion are be recovered.

Description

Automatic yarn ashing method for bag type dust removing device and new bag type dust removing device Technical field

The invention relates to the technical field of dust dust removal filtering equipment, in particular to an automatic yarn ashing method of a bag type dust removing device and a novel bag type dust removing device.

Background technique

It is well known that in the bag dust removal process, the dust will gradually adhere and pile up on the surface of the filter bag. If it is not removed, the filter bag will completely lose its function. In order to solve the above problems, people usually take the initiative to apply an external force to the filter bag. Under the action of external force, the dust accumulated on the surface of the filter bag separates from the filter material.

At present, in the field of bag dust removal, a common method of cleaning dust (or ash ashing) is to coat a steel cage in a filter bag. When dust is removed, the air flow is from the outside of the filter bag to the inside of the filter bag, and the dust is filtered. Isolation, adhered to the outer surface of the filter bag under the action of air pressure. When the dust is collected and the filter bag is not working properly, the dusty airflow to the filter bag is closed, and the injection system in the filter bag is activated. The compressed air from the blowpipe is instantaneously reversed to the filter bag, and the dust on the outer surface of the filter bag is shaken off.

Although the above-mentioned cleaning method can also achieve the purpose of cleaning, the cleaning mechanism is complicated and large, and the purchase and maintenance costs are high. In other extensive processing, the conditions of the above-mentioned cleaning mechanism are not provided, and the simple filter bag is used for dust removal and filtration. The filter bag is not bulky filter in the absence of a professional cleaning mechanism. The bag, or the filter bag is frequently replaced, so that the use efficiency and service life of the filter bag are extremely low, which inevitably increases the production cost and reduces the production efficiency.

Summary of the invention

The object of the present invention is to overcome the above-mentioned deficiencies of the conventional dust filter bag, and to provide an automatic yarn ashing method for a bag type dust removing device and a novel bag type dust removing device.

In order to achieve the above object, the technical solution of the present invention is: an automatic ashing method of a bag type dust removing device, the bottom of the bag type dust removing device is a dust collecting area, and the bag type dust removing device is provided with an air inlet at the middle, wherein: the automatic ashing The method is to set a dust filter cloth around the dust collecting area and the air inlet, the dust filter cloth is a filter cloth of flexible plastic material, and when the dust inlet airflow is introduced into the bag type dust removing device from the air inlet, the flexible plastic dust filter cloth is The bulging state is upwardly expanded, and part of the dust gradually accumulates on the inner surface of the flexible plastic dust filter cloth. When the ash on the flexible plastic dust filter cloth reaches a certain thickness, the air flow into the bag type dust removing device is stopped, and the flexible plastic dust filter cloth is placed thereon. The ash and its own gravity naturally collapse downward. During the process of collapse, most of the ash on the ash falls naturally into the dust collecting area below with the change of the shape of the flexible plastic dust filter; when the flexible plastic dust filter After the cloth stops falling, the airflow is restored to the bag dust removal device, and the flexible plastic dust filter cloth is again bulged upwards, along with the flexible plastic dust filter cloth. Liter form produced changes in the movement, but also part of the fouling fall again, shaking so complete a gray circle.

The invention also provides a novel bag type dust removing device, which comprises a dust collecting bag main body, the side of the dust collecting bag main body is provided with an air inlet, and the bottom of the dust collecting bag main body is provided with a bundleable ash discharging The mouth; wherein, at a position above the air inlet of the dust bag main body, a flexible plastic dust filter cloth is sewn along the peripheral bag wall of the dust bag main body.

As an embodiment of the present invention, a relatively rigid settable filter cloth is stitched on the flexible plastic dust filter cloth along the sewing edge of the dust bag main body and the flexible plastic dust filter cloth; the configurable filter cloth When the dust-containing airflow stops flowing into the bag type dust removing device, the shape can be substantially unchanged.

As another embodiment of the present invention, the dust collecting bag body is an inverted bag body which is made of a filter material and which is open downward, and an air inlet is provided in a middle side wall of the inverted bag body, and is inside the inverted bag body. At a position above the air inlet, a flexible plastic dust filter cloth is sewn along the inner wall of the inner side of the inverted bag body, and the developed area of the flexible plastic dust filter cloth is larger than the cross-sectional area of the inverted bag body.

As still another embodiment of the present invention, the bag type dust removing device comprises at least two dust collecting bag bodies, each side of the dust collecting bag body is provided with an air inlet port and the air inlet port is connected with the switching valve and the total air inlet pipe; A flexible plastic dust filter cloth is sewn along the peripheral bag wall of the dust bag main body at a position above the air inlet of each dust bag main body.

In the above bag type dust removing device, a flexible intake pipe extending inwardly is also engaged at an inner end of the air inlet.

In the above bag type dust removing device, a weight is provided in a middle portion of the flexible plastic dust filter.

Through the above technical solution, the invention adds a flexible plastic inner filter cloth to the dust collecting bag main body, utilizes the natural slumping effect of the flexible plastic dust filter cloth, and the power of the dust-containing air flow and the on-off combination of the dust-containing air flow. The up and down movement of the flexible plastic filter cloth automatically completes the graying function, so that the dust filter part can be restored to the ventilation and filtering function, without the need for extra large equipment and additional electric drive, so the equipment is more compact, simple, and the cost is greatly reduced. In addition, in the air inlet of the bag type dust removing device of the present invention, a flexible air inlet pipe for preventing dust backflow is further provided, which can completely avoid dust backflow leakage.

DRAWINGS

1 and 2 are front elevational views showing two working states of the bag type dust removing device according to the first embodiment of the present invention;

3 and 4 are schematic views showing a top view of two working states of the first embodiment;

5 and FIG. 6 are schematic front views showing two working states of the bag type dust removing device according to the second embodiment of the present invention;

Fig. 7 is a front elevational view showing the two working states of the bag type dust removing device of the third embodiment of the present invention.

detailed description

The invention will now be further described with reference to the accompanying drawings and embodiments.

1 to 4, the present invention first discloses a self-bag dust removal device. The method of moving the ash, the bottom of the bag type dust removing device is the dust collecting area 11, and the middle part of the bag type dust removing device is provided with the air inlet 12, wherein: the automatic ashing method is to set a dust filter cloth above the dust collecting area 11 and the air inlet 12 The dust filter cloth is a filter cloth of flexible plastic material, and the periphery of the flexible plastic dust filter cloth 2 is sutured with the upper open periphery of the dust collecting area 11 of the bag type dust collecting device, and the developed area of the flexible plastic dust filter cloth 2 is larger than the upper part of the dust collecting area 11 When the air is opened into the bag dust removal device by the air inlet 12, the flexible plastic dust filter 2 is in an upwardly bulging state, and part of the dust is gradually accumulated on the inner surface of the flexible plastic dust filter 2, when When the accumulated dust on the flexible plastic dust filter 2 reaches a certain thickness, the air flow into the bag type dust removing device is stopped, and the flexible plastic dust filter 2 naturally collapses downward under the ash accumulated thereon and its own gravity, and collapses. During the process, most of the ash accumulated on the dust gradually falls into the dust collecting area below with the change of the shape of the flexible plastic dust filter 2; when the flexible plastic dust filter 2 stops falling, the bag is restored. When the airflow is introduced into the dust removing device, the flexible plastic dust filter cloth 2 is again bulged upward, and as the shape of the flexible plastic dust filter 2 rises, some of the ash is again dropped, thus completing a ashing cycle. According to the type and size of the dust, several times of ashing cycle can be performed.

As shown in FIG. 1 and FIG. 2, the present invention also provides a novel bag type dust removing device. The bag type dust removing device includes a dust collecting bag main body 1. In the embodiment, the dust collecting bag main body 1 is thick or The filter material or the non-filter material having a plurality of layers is made of a bag body that is open at the upper and lower sides. The upper side wall of the dust bag body 1 is provided with an air inlet 12, and the bottom of the dust bag body 1 also forms a dust collecting area 11 The bottom of the dust bag main body 1 is provided with a ash discharge port 13 which can be bundled and loosened, and the ash discharge port 13 is bundled when the dust collecting operation is performed, and the ash discharge is unwound when the ash discharge is required; wherein, in the dust collecting bag main body A flexible plastic dust filter 2 is sewn along the peripheral wall of the dust bag main body 1 at a position above the air inlet 12, and the expanded plastic filter cloth 2 has a larger expansion area than the cross-sectional area of the dust bag main body 1 or Several times the cross-sectional area.

As shown in FIG. 5 and FIG. 6 , in another embodiment of the present invention, a layer of the flexible plastic dust filter 2 is stitched along the seam side of the dust bag main body 1 and the flexible plastic dust filter 2 . The hard configurable filter cloth 16; the configurable filter cloth 16 can be substantially unchanged when the dust-containing airflow is stopped and passed into the bag type dust removing device. When the dust-containing airflow stops flowing into the dust removing device, the shape of the configurable dust filter cloth 16 is substantially unchanged, and the dust removing cloth 2 naturally collapses. The function of the configurable filter cloth 16 is to further filter the airflow passing through the dust removing cloth 2, and collect a small amount of fine dust appearing on the outer surface of the dust filter cloth 2. The function is also that since the material of the configurable filter dust cloth 16 is hard and thick, the ashing action is not automatically generated, and no dust leakage is ensured.

Alternatively, similar to the embodiment of FIG. 5 and FIG. 6 , the dust collecting bag main body 1 is an inverted bag body which is made of a filter material and is opened downward, and the central side wall of the inverted bag body is provided with an air inlet 12, which is inverted. Inside the bag body, above the air inlet 12, a flexible plastic dust filter 2 is sewn along the inner wall of the inverted bag body, and the expanded plastic filter cloth 2 has a developed area larger than the cross-sectional area of the inverted bag body. In the embodiment, the dust collecting bag main body 1 is made of a filter material, which can further increase the filtering performance of the entire bag type dust removing device, and ensure no dust leakage. In the present embodiment, the filter cloth 16 and the dust bag main body 1 are made of the same material and are made of a whole piece of filter material, which can further simplify the manufacturing process of the dust removing device and increase the gas permeable area and the dust removing effect.

As shown in FIG. 7, in another embodiment of the present invention, the bag type dust removing device includes at least two dust collecting bag main bodies 1, and each side of the dust collecting bag main body 1 is provided with an air inlet 12 and an air intake. The port 12 is connected to the switching valve 14 and the total intake pipe 15; a flexible plastic dust filter 2 is sewn along the peripheral bag wall of the dust bag main body 1 at a position above the air inlet 12 of each dust bag main body 1. In this embodiment, two dust collecting bag bodies 1 are connected in parallel, and the two dust collecting bag main bodies 1 are switched by the switching valve 14 to perform alternate operations, so that the dust can be accumulated in the working state of the uninterrupted main intake pipe. The dust collecting bag main body 1 performs an ash discharging operation to improve production efficiency.

In the above bag type dust removing device, an inwardly extending flexible intake pipe 3 is also joined to the inner end of the intake port 12. The flexible intake pipe 3 can be made of a flexible leather or cloth, and its function is to prevent dust from flowing back. In the working state, due to the airflow, the flexible air intake pipe 3 is stretched to open the dust airflow; when the external dust suction device stops working, the airflow gas pressure disappears, and the upper flexible plastic dust filter cloth 2 will collapse downward, resulting in The lower air pressure increases the air flow. If there is no cover at the air inlet 12 at this time, the air flow will be mixed with the dust from the air inlet 12 to the external dust suction pipe, causing the dust to leak; and by increasing the flexibility The air pipe 3, when the intake air flow disappears, the flexible intake pipe 3 is naturally collapsed due to its own weight, and the air inlet 12 is sealed to prevent the airflow from flowing back along the air inlet 12. The length of the flexible intake pipe 3 is suitable to cover the air inlet 12, and should not be too long, and keep a certain distance from the integrated area of the bottom to avoid being buried by dust.

In the bag type dust removing device, a weighting block 21 is disposed in the middle of the flexible plastic dust filter cloth 2, and the weighting block 21 can accelerate the collapse process of the flexible plastic dust filter cloth 2, thereby enhancing the yarnshaking effect and making the flexible plastic dust filter. The dust on the lower surface of the cloth 2 is more likely to fall off; the weight of the weight 21 is suitable for supporting the flexible plastic dust filter 2 without affecting the intake air flow. The weights 21 may also be provided in multiple places and in multiple places, thereby increasing the deformation effect of the flexible plastic dust filter 2 and enhancing the graying effect.

Through the above technical solution, the present invention utilizes a flexible plastic dust filter 2 in the dust bag main body 1 to utilize the natural collapse effect of the flexible plastic dust filter 2, and the power of the dust-containing airflow, and the on-off of the dust-containing airflow. In combination, the graying function is automatically completed by the up and down movement of the flexible plastic dust filter cloth 2, so that the dust filter portion can be restored to the ventilation and filtering function, and no additional large equipment and additional electric drive are required, so the device is more compact, simple, and the cost is greatly reduced. The vibrating method and the dust removing device mechanism are extremely simple, convenient to implement, and have good dust removing effect, and are suitable for purifying and treating particulate inorganic matter dust. Further, in the air inlet 12 of the bag type dust removing device of the present invention, a flexible intake pipe 3 for preventing dust backflow is provided inside, and the dust back leakage can be completely avoided.

The above application examples are only for describing the present invention, but the present invention is not limited to the embodiments disclosed above, but should cover various modifications and equivalent combinations according to the essence of the present embodiment.

Claims (7)

The utility model relates to an automatic ashing method of a bag type dust removing device, wherein a bottom of the bag type dust removing device is a dust collecting area, and a bag type dust removing device is provided with an air inlet port in the middle, wherein the automatic ashing method is in a dust collecting area and an air inlet A filter cloth is arranged on the top, and the filter cloth is a filter cloth of flexible plastic material. When the dust-containing airflow is introduced into the bag type dust removing device from the air inlet, the flexible plastic dust filter cloth is upwardly bulged, and some dust gradually accumulates. On the inner surface of the flexible plastic dust filter cloth, when the dust accumulated on the flexible plastic dust filter cloth reaches a certain thickness, the air flow into the bag type dust removing device is stopped, and the flexible plastic dust filter cloth naturally flows toward the ash and its own gravity. When it collapses, during the process of collapse, most of the accumulated ash on the concrete falls into the dust collecting area below with the change of the shape of the flexible plastic dust filter; when the flexible plastic dust filter stops falling, the bag is removed. The airflow is introduced into the device, and the flexible plastic dust filter cloth is again bulged upwards, and the shape changes with the movement of the flexible plastic dust filter cloth. Fouling falling again, and so complete a shake ash cycle. A novel bag type dust removing device is characterized in that: the bag type dust removing device comprises a dust collecting bag main body, the side of the dust collecting bag main body is provided with an air inlet, and the bottom of the dust collecting bag main body is provided with a bundleable ash discharging The mouth; wherein, at a position above the air inlet of the dust bag main body, a flexible plastic dust filter cloth is sewn along the peripheral bag wall of the dust bag main body. The novel bag type dust removing device according to claim 2, wherein a relatively rigid shape is sewn along the seam of the dust bag main body and the flexible plastic dust filter cloth above the flexible plastic dust filter cloth. Filter cloth. The bag dust removing device according to claim 2, wherein the dust collecting bag body is a downwardly opening inverted bag body made of a filter material, and the central wall of the inverted bag body is provided with an air inlet. A flexible plastic dust filter cloth is sewn along the inner wall of the inverted bag body inside the inverted bag body and above the air inlet port, and the expanded plastic filter cloth has a developed area larger than the cross-sectional area of the inverted bag body. A novel bag type dust removing device according to claim 2 or 3 or 4, characterized in that The bag dust removing device comprises at least two dust collecting bag bodies, each side of the dust collecting bag body is provided with an air inlet port, and the air inlet port is connected with the switching valve and the total air inlet pipe; in each dust collecting bag main body At a position above the air inlet, a flexible plastic dust filter cloth is sewn along the peripheral wall of the dust bag main body. A novel bag type dust removing device according to claim 2 or 3 or 4, wherein a flexible intake pipe extending inwardly is also engaged at an inner end of said intake port. The novel bag type dust removing device according to claim 2 or 3 or 4, wherein a weight is provided in a middle portion of the flexible plastic dust filter.

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