A water circulation system for a wet dust collector

Abstract

This utility model provides a water circulation system for a wet dust removal device, belonging to the field of wastewater purification technology. It includes a sand removal mechanism for removing large particulate dust impurities from wastewater; and a water circulation mechanism located below the sand removal mechanism for filtering circulating water. The water circulation mechanism includes a water storage tank with a transition chamber at the top inside the tank. The transition chamber receives wastewater discharged from the sand removal mechanism, and a skimming roller for skimming scum is located on the drainage side of the transition chamber. Based on the characteristics of dust generated during tobacco production, this utility model redesigns the water circulation mechanism, significantly reducing maintenance frequency and downtime compared to existing filtration systems, thereby ensuring production efficiency. The staged continuous treatment method not only solves the problems of easy clogging and frequent cleaning of existing filtration mechanisms but also ensures wastewater treatment efficiency and stable operation of the water circulation mechanism.

Description

Technical Field

[0001] This utility model relates to the field of wastewater purification technology, specifically to a water circulation system for a wet dust removal device. Background Technology

[0002] During tobacco production, a large amount of dust is generated at every stage, from tobacco leaf storage and pretreatment to tobacco processing and packaging. This dust mainly includes tobacco leaf dust, tobacco stem dust, and tobacco dust.

[0003] In the tobacco pretreatment stage, tobacco leaves undergo unpacking, loosening, and screening. Friction and collision between the leaves, as well as the mechanical action of the equipment, generate a large amount of dust. The shredding stage is one of the stages in tobacco production with the highest dust generation. During the shredding process, the high-speed rotating shredder comes into contact with the tobacco leaves, producing a large amount of tobacco dust, tobacco stem fragments, and sand or soil debris.

[0004] These dust particles need to be treated effectively and promptly to prevent the production workshop from becoming dirty and messy, and to avoid harming the health of the workers.

[0005] Wet scrubbing is a common dust removal method in tobacco factories. Its principle is to capture dust particles by bringing them into contact with water or other liquids, thus achieving dust removal. Compared to dry scrubbing, wet scrubbing has advantages such as higher dust removal efficiency, effective removal of fine dust, and greater adaptability to different dust types. Furthermore, it can also cool and humidify the environment during the dust removal process, improving the working environment of the workshop. Therefore, wet scrubbing has been widely used in dust removal projects in tobacco factories.

[0006] Considering cost and environmental concerns, current wet scrubbing systems generally use circulating water, which is filtered and reused to reduce water consumption. However, current water circulation systems struggle to maintain a balance. Existing systems filter water before discharging it into the dust collection system, but tobacco processing generates a large amount of impurities such as tobacco debris, stems, and sand. If the filter used for circulating water has too large a mesh size and too small a pore size, the filtration speed will be slow and the filter will clog frequently. Conversely, if the mesh size is too small and the pore size is too large, impurities will pass through, clogging the atomization structure. Utility Model Content

[0007] This invention provides a water circulation system for a wet dust removal device to solve the technical problems of easy clogging of filters and the need for frequent cleaning in the prior art.

[0008] To solve the above problems, the water circulation system of the wet dust removal device provided by this utility model adopts the following technical solution: it includes a sand removal mechanism, which is used to remove large particulate dust impurities from wastewater;

[0009] A water circulation mechanism is installed below the sand removal mechanism for filtering circulating water. The water circulation mechanism includes a water storage tank, and a transition chamber is provided above the inside of the water storage tank. The transition chamber is used to receive wastewater discharged by the sand removal mechanism. A skimming roller for skimming scum is provided on the drainage side of the transition chamber. The skimming roller is rotatably connected to the water storage tank. A gap is provided between the transition chamber and the skimming roller to allow water to flow through. A scraper for scraping off scum is provided on the side of the skimming roller away from the transition chamber.

[0010] As a further improvement, the sand removal mechanism includes a sand removal box with a water inlet at the top, a drain outlet at the bottom of the sand removal box, and a water inlet at the top of the water storage tank corresponding to the drain outlet.

[0011] The sand box contains a sand storage box with a drainage plate. The drainage plate is lower than the other three side walls, allowing sewage to flow from the drainage plate to the transition chamber. The drainage plate is located on the side closest to the drain outlet.

[0012] As a further improvement, the sand removal box is hinged with a door on the side away from the drain outlet to allow for the removal of the sand storage box for cleaning.

[0013] As a further improvement, the bottom of the water storage tank is arc-shaped or conical to facilitate cleaning of the inside of the water storage tank.

[0014] As a further improvement, the skimming roller is connected to a geared motor mounted on the outer wall of the water storage tank.

[0015] As a further improvement, a debris box for receiving scum is provided below the scraper.

[0016] The beneficial effects of the above-mentioned technical solution of this utility model are as follows:

[0017] Based on the characteristics of the dust generated during tobacco production, this utility model redesigns the water circulation mechanism, which significantly reduces the maintenance frequency and downtime for maintenance compared with existing filtration systems, thereby ensuring production efficiency.

[0018] Impurities generated during tobacco production mainly consist of dust particles and tobacco debris. This invention incorporates a sand removal mechanism. After wastewater enters the sand storage box, particulate impurities settle at the bottom, while powdery impurities and tobacco debris flow into the water circulation mechanism. The wastewater then flows into the transition chamber and towards the skimming roller. Since tobacco debris floats on the surface of the wastewater, the rotating skimming roller allows the tobacco debris to adhere to it. As the roller rotates, the tobacco debris adhering to it is scraped off by a scraper.

[0019] This invention adopts a graded continuous treatment method, which not only solves the problems of easy clogging and frequent cleaning of existing filter mechanisms, but also ensures sewage treatment efficiency and stable operation of the water circulation mechanism. Attached Figure Description

[0020] The above and other objects, features, and advantages of the present invention will become readily understood by reading the following detailed description of exemplary embodiments with reference to the accompanying drawings. In the drawings, several embodiments of the present invention are shown by way of example and not limitation, and like or corresponding reference numerals denote like or corresponding parts, wherein:

[0021] Figure 1 This is a schematic diagram of the water circulation system of the wet dust removal device of this utility model;

[0022] Figure 2 This is a schematic diagram of the sand removal mechanism of the water circulation system in the wet dust removal device of this utility model.

[0023] Figure 3 This is a schematic diagram of the water circulation mechanism of the water circulation system in the wet dust removal device of this utility model.

[0024] Figure 4 This is a reference diagram showing the usage status of the water circulation system of the wet dust removal device of this utility model.

[0025] Explanation of reference numerals in the attached figures:

[0026] 100. Sand removal mechanism; 110. Water inlet; 120. Sand removal box; 130. Sand storage box; 140. Drainage plate; 150. Drain outlet; 160. Box door; 200. Water circulation mechanism; 210. Water storage tank; 220. Transition chamber; 230. Water inlet; 240. Skimming roller; 250. Scraper; 300. Debris box. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Those skilled in the art should understand that the embodiments described below are only some, not all, of the embodiments disclosed. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0028] In existing technologies, tobacco production generates a large amount of dust, which is generally treated with wet dust removal. Wet dust removal uses circulating water, but existing filtration mechanisms struggle to maintain a balance. If the mesh size of the filter used to filter the circulating water is too large and the pore size is too small, the filtration speed is slow and the filter is frequently clogged. Conversely, if the mesh size is too small and the pore size is too large, impurities can easily pass through and clog the atomization structure.

[0029] To address the aforementioned issues, this invention redesigns the water circulation mechanism based on the characteristics of the dust generated during tobacco production. The impurities generated during tobacco production mainly consist of dust particles and tobacco debris. This invention removes both types of impurities in two separate steps.

[0030] After the wastewater enters the sand storage box, particulate impurities settle at the bottom, eliminating large dust particles. Powdered impurities and tobacco debris flow into the water circulation mechanism. The wastewater then enters the transition chamber and flows to the skimming roller. Since tobacco debris floats on the surface of the wastewater, the rotating roller allows the tobacco debris to adhere to it. As the roller rotates, the tobacco debris is scraped off by a scraper. This staged continuous treatment ensures both wastewater treatment efficiency and stable operation of the water circulation mechanism.

[0031] After introducing the basic principles of this utility model, various non-limiting embodiments of this utility model are described in detail below. Any quantity of elements in the accompanying drawings is for illustrative purposes only and not for limitation, and any naming is for distinction only and has no limiting meaning.

[0032] The principles and spirit of this utility model will be explained in detail below with reference to several representative embodiments.

[0033] Example 1 of the water circulation system of the wet dust removal device provided by this utility model:

[0034] like Figures 1-4 As shown, the water circulation system of the wet dust collector includes a sand removal mechanism 100 and a water circulation mechanism 200.

[0035] The sand removal mechanism 100 is used to remove large particulate dust impurities from sewage. The sand removal mechanism 100 includes a sand removal box 120 with a water inlet 110 at the top. Sewage discharged from the external dust removal mechanism is discharged into the sand storage box 130 through the water inlet 110. The sand removal box 120 has a drain outlet 150 at the bottom, and the water storage tank 210 has a water inlet 230 at the top corresponding to the drain outlet 150.

[0036] The sand removal box 120 has a sand storage box 130 inside, which has a drainage plate 140. The drainage plate 140 is lower than the other three side walls, allowing wastewater to flow from the drainage plate 140 to the transition chamber 220. The drainage plate 140 is located on the side near the drain outlet 150. The overflow method is chosen for drainage because the larger particles in the dust impurities have a relatively higher density and will settle at the bottom of the sand storage box 130. The overflowing wastewater mainly contains tobacco debris and powdery impurities, thus achieving the purpose of removing sand (i.e., removing large particles from the dust impurities) from the wastewater.

[0037] A door 160 is hinged to the side of the sand box 120 away from the drain outlet 150 to allow the sand storage box 130 to be removed for cleaning.

[0038] The water circulation mechanism 200 is located below the sand removal mechanism 100 and is used to filter circulating water. The water circulation mechanism 200 includes a water storage tank 210. A transition chamber 220 is provided above the interior of the water storage tank 210. The transition chamber 220 is used to receive wastewater discharged from the sand removal mechanism 100. A skimming roller 240 for skimming scum is provided on the drainage side of the transition chamber 220. The skimming roller 240 is rotatably connected to the water storage tank 210. A gap is provided between the transition chamber 220 and the skimming roller 240 to allow water to flow through. A scraper 250 for scraping off scum is provided on the side of the skimming roller 240 away from the transition chamber 220.

[0039] The bottom of the water storage tank 210 is arc-shaped or conical. When the water storage tank 210 is cleaned regularly, the wastewater and impurities from cleaning will collect at the bottom of the water storage tank 210 for easy direct discharge. The bottom of the water storage tank 210 is equipped with a drain port, which is controlled by a manual valve.

[0040] The skimming roller 240 is connected to the geared motor installed on the outer wall of the water storage tank 210.

[0041] Below the scraper 250 is a debris box 300 for receiving scum.

[0042] While this specification has shown and described numerous embodiments of the present invention, it will be apparent to those skilled in the art that such embodiments are provided by way of example only. Many modifications, alterations, and alternatives will occur to those skilled in the art without departing from the spirit and intent of the present invention. It should be understood that various alternatives to the embodiments of the present invention described herein may be employed in the practice of the present invention. The appended claims are intended to define the scope of protection of the present invention and therefore cover the modular compositions, equivalents, or alternatives within the scope of these claims.

Claims

1. A water circulation system for a wet dust collector, characterized in that, include: A sand removal unit (100) is used to remove large particulate dust impurities from wastewater; A water circulation mechanism (200) is installed below the sand removal mechanism (100) for filtering circulating water. The water circulation mechanism (200) includes a water storage tank (210). A transition chamber (220) is provided above the interior of the water storage tank (210). The transition chamber (220) is used to receive wastewater discharged by the sand removal mechanism (100). A skimming roller (240) for skimming scum is provided on the drainage side of the transition chamber (220). The skimming roller (240) is rotatably connected to the water storage tank (210). A gap is provided between the transition chamber (220) and the skimming roller (240) to allow water to flow through. A scraper (250) for scraping off scum is provided on the side of the skimming roller (240) away from the transition chamber (220).

2. The water circulation system of the wet dust collector according to claim 1, characterized in that: The sand removal mechanism (100) includes a sand removal box (120), a water inlet (110) at the top, a drain outlet (150) at the bottom of the sand removal box (120), and a water inlet (230) at the top of the water storage tank (210) corresponding to the drain outlet (150). The sand removal box (120) is equipped with a sand storage box (130) inside. The sand storage box (130) has a drainage plate (140). The drainage plate (140) is lower than the other three side walls, so that sewage flows from the drainage plate (140) to the transition chamber (220). The drainage plate (140) is located on the side near the drain outlet (150).

3. The water circulation system of the wet dust removal device according to claim 2, characterized in that: The sand removal box (120) has a hinged door (160) on the side away from the drain outlet (150) to allow the sand storage box (130) to be removed for cleaning.

4. The water circulation system of the wet dust collector according to claim 1, characterized in that: The bottom of the water storage tank (210) is arc-shaped or conical to facilitate cleaning of the inside of the water storage tank (210).

5. The water circulation system of the wet dust collector according to claim 1, characterized in that: The skimming roller (240) is connected to a geared motor installed on the outer wall of the water storage tank (210).

6. The water circulation system of the wet dust collector according to claim 1, characterized in that: Below the scraper (250) is a debris box (300) for receiving scum.

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