Anti-blocking and anti-overflow filter screen box device in wet dust collector

Abstract

The utility model belongs to the technical field of tobacco production, and particularly relates to an anti-blocking and anti-overflow filter screen box device in a wet dust collector. Comprising a first filtering area, a second filtering area and a third filtering area; two sides of the second filtering area are respectively connected with the first filtering area and the third filtering area to form an integral structure; the diameters of the filter holes in the first filter area are gradually increased from top to bottom; the second filtering area is of a groove-shaped structure composed of a bottom area, a left side area, a right side area, a front area and a rear area. According to the technical scheme, irrationality of a filter screen box structure in the wet dust collector can be greatly improved, normal production time of the dust collector can be greatly prolonged under the condition that the filter screen box is not cleaned manually by adopting the anti-blocking and anti-overflow filter screen box device, effectiveness of continuous operation of the dust collector is guaranteed, timeliness is improved, and production efficiency is improved. And adverse effects on normal production of the tobacco cutter caused by weakening of the dust removal capability of the dust remover and even blockage and shutdown are reduced as much as possible.

Description

Technical Field

[0001] The utility model belongs to the technical field of tobacco production, and in particular relates to an anti-clogging and anti-overflow filter box device in a wet dust collector. Background Art

[0002] In tobacco industry enterprises, the throttling gas-liquid exchanger, also known as the wet dust collector, is a wet dust removal equipment, which is often used in the process and environmental dust removal of silk workshops, exhaust gas treatment and other links. It can treat high-temperature and high-dust exhaust gas, fibrous and easily adherent dust exhaust gas, has a certain odor treatment effect, and meets the needs of local emission. It is also used to extinguish the grinding wheel sparks generated by the working of the shredder and remove tobacco dust. It has the advantages of stable operation and elimination of fire hazards. There are many application examples in the field of air quality in the tobacco industry. However, in actual use, it was found that the structural design of the tobacco dust, fiber, and grinding wheel ash collection filter box in the wet dust collector of the shredder was unreasonable, the filter holes were of uniform size, and there was no graded filtration in the structure. Tobacco debris and other dirt often adhered to the surface of the filter holes on site, causing the filter box to be blocked. The filtered water could not be discharged through the filter holes in the filter box, and water accumulated in the filter box. Tobacco, tobacco dust hydrates and grinding wheel ash floated on the surface of the accumulated water and overflowed from the filter box, finally blocking the drain port of the drainage box, causing too much water to accumulate in the drainage box, which greatly weakened the dust removal effect. In severe cases, the wet dust collector will be blocked and shut down. The inability to remove dust in time has a great impact on the equipment and the surrounding environment, and even the dust collector cannot capture sparks during the production of the shredder, resulting in a fire accident. Utility Model Content

[0003] The utility model aims to provide an anti-clogging and anti-overflow filter box device in a wet dust collector to solve the problems existing in the above-mentioned background technology.

[0004] To achieve the above objectives, this application is implemented through the following technical solutions:

[0005] An anti-clogging and anti-overflow filter box device in a wet dust collector comprises a first filter area, a second filter area and a third filter area;

[0006] The two sides of the second filter area are respectively connected to the first filter area and the third filter area to form an integrated structure;

[0007] The diameters of the filter holes on the first filter area gradually increase from top to bottom;

[0008] The second filter area is a groove-shaped structure consisting of a bottom area, a left area, a right area, a front area and a rear area, the bottom of the first filter area is connected to the top of the left area, and the bottom of the third filter area is connected to the top of the right area;

[0009] The filter holes arranged on the second filter area are all the same and have the same pore size as the middle filter holes of the first filter area;

[0010] The pore size of the filter holes in the third filter area is the same as the pore size of the smallest filter hole in the first filter area.

[0011] Furthermore, the angle between the plane where the first filtering area is located and the horizontal plane is greater than the angle between the left area and the horizontal plane.

[0012] Furthermore, the angle between the plane where the first filtering area is located and the horizontal plane is 75 degrees, and the angle between the left area and the horizontal plane is 60 degrees.

[0013] Furthermore, the angle between the third filter area and the horizontal plane is greater than the angle between the first filter area and the horizontal plane.

[0014] Furthermore, the angle between the left area and the horizontal plane is greater than the angle between the right area and the horizontal plane.

[0015] Furthermore, the upper surface of the first filter area is a concave arc shape.

[0016] Furthermore, the second filter area is in the shape of a right-angled trapezoid as a whole.

[0017] Furthermore, the intersections between the filter holes in the first filter area, the left area and the right area and the upper surface are all configured with rounded corners.

[0018] The beneficial effects of the utility model are:

[0019] This technical solution can greatly improve the irrationality of the filter box structure inside the wet dust collector. The use of a new anti-blocking and anti-overflow filter box device can greatly extend the normal production time of the dust collector without manual cleaning of the filter box, ensure the effectiveness of the continuous operation of the dust collector, increase timeliness, and minimize the adverse effects on quality, process, 6S, etc. on the normal production of the shredder caused by the weakening of the dust removal capacity of the dust collector itself or even blockage and shutdown. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The overall structure of the anti-blocking and anti-overflow filter box device and the distribution diagram of small, medium and large filter holes.

[0021] Figure 2 This is a schematic diagram of the accumulation of dust hydrates in the filter box device and the flow direction of sewage.

[0022] Description of reference numerals:

[0023] 1. First filter area; 2. Second filter area; 3. Third filter area; 21. Left area; 22. Right area; 23. Bottom area; 24. Front area, 25. Back area; 101. First filter hole; 102. Second filter hole; 103. Third filter hole. DETAILED DESCRIPTION

[0024] The technical solution of the present invention is described in detail below in conjunction with the accompanying drawings. The following embodiments are merely exemplary and can only be used to explain and illustrate the technical solution of the present invention, but cannot be construed as limiting the technical solution of the present invention.

[0025] See also Figure 1 and Figure 2 The present application provides a new type of anti-blocking and anti-overflow filter box device in a wet dust collector. The filter box device is placed in a throttling gas-liquid exchanger, that is, a wet dust collector. The special structure and partitioned filter hole size of the device can not only meet the requirements of dust removal water flowing out from different areas of the filter box and falling into the drainage box under the filter box, but also make smoke, dust, grinding wheel hydrated dirt fall into the predetermined device area. Combined with a long period of simple manual cleaning, the dirt will not block the filter box, thereby ensuring the stability of the water inlet and outlet of the drainage box, thereby ensuring the effectiveness and sustainability of the continuous operation of the wet dust collector, making the equipment production run more smoothly and the process quality better guaranteed.

[0026] The anti-blocking and anti-overflow filter box device of the present application is formed in one piece from stainless steel. The entire device is similar to a U-shape, meeting the requirements of graded filtration and anti-blocking. The length and width are sufficient to be placed in the drainage and sewage box of the wet dust removal equipment, and can be placed on the baffle between the two horizontal box facades in the sewage box. The depth of the filter box is less than the distance between the baffle and the upper cover of the drainage box. In this way, the new anti-blocking and anti-overflow filter box device can be placed above the inlet and outlet water balance water level surface of the drainage box, and the filtration performance of the filter screen is not affected by the water level during use. The filter box is divided into three areas. One area is an inclined slope with an angle of 75 degrees with the horizontal plane. It is the first to contact the dust removal sewage mixture. There are many filter holes of inconsistent sizes distributed on the slope. The filter holes are distributed from small to large on the slope from top to bottom. The second zone is the filter buffer zone, which is a right-angle trapezoidal structure. It can collect the smoke hydrates washed down from the first zone. The bottom is also distributed with medium filter holes, which can prevent the dust hydrates from falling into the drainage box from the filter holes and allow the filtered water to flow into the drainage box from the medium filter holes. The third zone is the anti-overflow zone of the filter box, with fine filter holes distributed on the surface, so that the smoke and dust mixture floating on the surface of the second zone will not overflow to the bottom of the drainage box to block the drainage port. When the sewage in the second zone increases and the water filtering capacity becomes weak, the sewage is discharged through the filter holes in the third zone.

[0027] Specifically, an anti-clogging and anti-overflow filter box device in a wet dust collector includes a first filter area 1, a second filter area 2 and a third filter area 3.

[0028] Both sides of the second filter area are respectively connected to the first filter area and the third filter area to form an integrated structure, and the upper end surface of the first filter area is higher than the upper end surface of the third filter area.

[0029] The diameter of the filter holes on the first filter area gradually increases from top to bottom; in this embodiment, the first filter area is divided into three areas from top to bottom, namely the first area, the second area and the third area; the filter holes in each area have the same aperture, wherein the first filter hole 101 in the first area has the smallest aperture, the second filter hole 102 in the second area has a medium aperture, and the third filter hole 103 in the third area has a large aperture. In the technical solution of this application, it is not necessary to specify the specific value of the aperture, but it can be determined accordingly according to the actual situation.

[0030] The second filter area 2 is a trough-shaped structure consisting of a bottom area 23, a left area 21, a right area 22, a front area 24 and a rear area 25. The lower side of the first filter area is connected to the upper side of the left area, and the lower side of the third filter area is connected to the upper side of the right area; the filter holes arranged on the second filter area are all the same and have the same aperture as the second filter holes of the first filter area; the aperture of the filter holes of the third filter area is the same as the aperture of the first filter holes of the first filter area.

[0031] The angle between the plane where the first filter area is located and the horizontal plane is greater than the angle between the left area and the horizontal plane. The angle between the plane where the first filter area is located and the horizontal plane is 75 degrees, and the angle between the left area and the horizontal plane is 60 degrees. The angle between the third filter area and the horizontal plane is greater than the angle between the first filter area and the horizontal plane. The angle between the left area and the horizontal plane is greater than the angle between the right area and the horizontal plane.

[0032] The upper surface of the first filter area is a concave arc, and the concave arc here is slightly concave. Such a structure can prevent the dust hydrate from flowing to the second filter area too quickly after falling into the first filter area, resulting in poor water removal effect in the first filter area. It plays a partial buffering role here.

[0033] The second filter area is in the shape of a right-angle trapezoid as a whole. The intersections of the filter holes and the upper surface of the first filter area, the left area and the right area are all rounded, which can prevent the solid matter from having a large resistance with the filter hole and partially entering the filter hole to block the filter hole.

[0034] like Figure 2As shown in the figure, the accumulation of dust hydrates in the filter box device and the schematic diagram of the flow direction of sewage, the green arrows represent the accumulation and flow direction of smoke hydrates in sequence, and the blue arrows represent the sewage flowing from the filter holes into the drainage box. Dust hydrates include smoke, grinding wheel ash, tobacco, tobacco leaves, etc. They are sucked into the wet dust collector by the dust removal fan of the wet dust collector, and combined with the water mist and water vapor in the dust collector to become wet and agglomerated dust hydrates. The dust hydrates are discharged from the overflow port to the new anti-blocking and anti-overflow filter box device. The dust hydrates will first fall into the first filter area of ​​the device on a slope of 75 degrees with the horizontal plane. Since the first filter area is distributed from small to medium to large filter holes from top to bottom, the dust hydrates first fall into the smaller filter holes, and the dust hydrates are intercepted by the smaller filter holes. The sewage and filtered water flow directly into the drainage box through the upper smaller filter holes to complete the first-level filtration. When the dust hydrate gradually accumulates, the dust hydrate rolls from the first filter area into the second filter area. The second filter area is distributed with medium-sized filter holes, which can not only ensure that the smoke and tobacco hydrate can be blocked on the filter net of the second filter area, but also ensure that the grinding wheel ash and sewage can pass through the filter holes and fall into the drainage box, which can make the drainage smooth, collect a large amount of dust hydrate, and prevent the hydrate from overflowing the device and blocking the drainage box drainage port, completing the secondary cache filtration. When the smoke hydrate in the second filter area accumulates too much, the medium filter holes in the second filter area will reduce the sewage filtration performance, so the sewage in the second filter area will gradually accumulate, the water level will gradually rise, and the dust hydrate is floating on the water surface. The height of the third filter area is higher than that of the second filter area. When the water level reaches the height of the third filter area, the surface of the third filter area is distributed with smaller filter holes to block the dust mixture. The rising water level can be filtered out from the small filter holes in the third filter area and fall into the drainage box, completing the third cache filtration. When the equipment is operated for a long time, too much smoke hydrate accumulates. During a long operation cycle, when the water level is about to exceed the third filtration height, it is necessary to manually clean the device simply to clean the smoke hydrate and tobacco mixture that is about to accumulate, so as to prevent the dust hydrate from accumulating in the device and overflowing in the third filtration area, and finally blocking the drainage box outlet to prevent equipment failure, affecting the normal operation of the shredder and causing adverse effects on the production process.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An anti-clogging and anti-overflow filter box device in a wet dust collector, characterized in that: It includes a first filter area, a second filter area and a third filter area; The two sides of the second filter area are respectively connected to the first filter area and the third filter area to form an integrated structure; The diameters of the filter holes on the first filter area gradually increase from top to bottom; The second filter area is a groove-shaped structure consisting of a bottom area, a left area, a right area, a front area and a rear area, the bottom of the first filter area is connected to the top of the left area, and the bottom of the third filter area is connected to the top of the right area; The filter holes arranged on the second filter area are all the same and have the same pore size as the middle filter holes of the first filter area; The pore size of the filter holes in the third filter area is the same as the pore size of the smallest filter hole in the first filter area.

2. The anti-clogging and anti-overflow filter box device in a wet dust collector according to claim 1, characterized in that: The angle between the plane where the first filtering area is located and the horizontal plane is greater than the angle between the left area and the horizontal plane.

3. The anti-clogging and anti-overflow filter box device in a wet dust collector according to claim 2, characterized in that: The angle between the plane where the first filtering area is located and the horizontal plane is 75 degrees, and the angle between the left area and the horizontal plane is 60 degrees.

4. The anti-clogging and anti-overflow filter box device in a wet dust collector according to claim 3, characterized in that: The angle between the third filter area and the horizontal plane is greater than the angle between the first filter area and the horizontal plane.

5. The anti-clogging and anti-overflow filter box device in a wet dust collector according to claim 1, characterized in that: The angle between the left area and the horizontal plane is greater than the angle between the right area and the horizontal plane.

6. The anti-clogging and anti-overflow filter box device in a wet dust collector according to claim 1, characterized in that: The upper surface of the first filter area is in a concave arc shape.

7. The anti-clogging and anti-overflow filter box device in a wet dust collector according to claim 1, characterized in that: The second filter area is in a right-angle trapezoid shape as a whole.

8. The anti-clogging and anti-overflow filter box device in a wet dust collector according to claim 1, characterized in that: The intersections of the filter holes in the first filter area, the left area and the right area with the upper surface are all provided with rounded corners.

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