Water-based adhesive filtering equipment

Abstract

The utility model relates to water-based adhesive filtering equipment which comprises a main body, the interior of the main body is sequentially divided into a first filtering area, a second filtering area and a third filtering area from top to bottom, the first filtering area, the second filtering area and the third filtering area are sequentially connected through a conveying pipeline, and scraper devices are uniformly arranged in the conveying pipeline. The scraper device comprises a middle shaft, the middle shaft is sleeved with two trapezoidal scrapers, the two ends of the middle shaft are fixedly connected with the inner walls of the two sides of the conveying pipeline through bearings, through three different filtering areas including a folding type filtering plate, a spiral type filtering plate and filtering element vibration, adsorption and accumulation can be prevented while filtering is conducted in sequence, the blocking and cleaning difficulty is reduced, and the filtering efficiency is improved. The trapezoidal scraper of the scraper device in the conveying pipeline can scrape materials in the pipeline while conveying and guiding the materials, high-viscosity ink filtering is stabilized, and backflow and blockage are prevented while cleaning is assisted.

Description

TECHNICAL FIELD

[0001] The utility model relates to water -based adhesive production equipment field especially relates to a water -based adhesive filtering equipment. BACKGROUND

[0002] Water -based adhesive can be together with pigment, filler etc. Solid particle is bonded, and makes ink to be attached on the printing material surface, is the indispensable part in water -based ink system, in the production or storage process, it is extremely possible to mix various impurities, these impurities can influence the delicacy of ink, can increase the viscosity of adhesive, reduces its flowability, causes the granular feeling to appear on the printing surface, influences the integrity and the definition of printing pattern. Therefore, need to use the filtering equipment to remove these impurities effectively, guarantee the flowability and dispersibility of water -based adhesive, make the ink texture more uniform and delicate. However, the use of the existing water -based adhesive filtering equipment still has many problems, for example, the filtering device of starch-based water -based adhesive is disclosed in the publication no. CN217490021U, in the process of filtering water -based adhesive in ink, some pigments in ink are easy to be adsorbed on the surface of filter net barrel, and the mesh is blocked, and since the component has stronger adhesion, the adsorbed and blocked impurities are more difficult to clean. In addition, the viscosity of ink is very high, so in the pursuit of high-precision filtration, the filtration speed will inevitably be reduced, thereby causing the flowability of ink in the feed pipe to be poor or unable to pass through the filter net barrel smoothly, staying in the filter net and the feed pipe, causing blockage and affecting the filtration efficiency. SUMMARY

[0003] (I) technical problems solved

[0004] In view of the limitations of the existing water -based adhesive filtering device, the utility model aims at providing a water -based adhesive filtering equipment, which is provided with three different filtering zones, and prevents adsorption and accumulation by filtering in turn through the folding filter plate, the spiral filter plate and the filter core vibration, reduces the difficulty of blockage and cleaning, and the trapezoidal scraper of the scraper device in the conveying pipeline can scrape off the material in the pipeline while conveying and guiding the material, stabilize the high-viscosity ink filtration, prevent backflow and blockage while assisting cleaning.

[0005] (II) technical scheme

[0006] To achieve the above object, the utility model provides the following technical scheme: a kind of water-based adhesive filtering equipment, including main body, the inside of main body is sequentially divided into first filter area, second filter area and third filter area from top to bottom, first filter area, second filter area and third filter area are sequentially connected by conveying pipeline between them, conveying pipeline is uniformly provided with scraper device inside, scraper device includes intermediate shaft, two trapezoidal scrapers are sleeved on intermediate shaft, the both ends of intermediate shaft are fixedly connected with the inner wall of both sides of conveying pipeline, the diameter of filter screen inside first filter area, second filter area and third filter area gradually decreases, and each conveying pipeline is obliquely arranged downward. The inside of filtering equipment main body is divided into three parts, the upper part is first filter area, the middle is second filter area, and the lower part is third filter area, first filter area is connected with second filter area by conveying pipeline, second filter area is connected with third filter area by conveying pipeline, and conveying pipeline is gradually inclined, that is, the bottom of first filter area is fixedly connected with conveying pipeline, conveying pipeline is gradually inclined downward and fixedly connected with the top end of second filter area, and the conveying pipeline between second filter area and third filter area is the same. Conveying pipeline is uniformly provided with a plurality of scraper devices inside, scraper device is transversely arranged in conveying pipeline, the both ends of intermediate shaft are fixedly connected with the inner wall of both sides of conveying pipeline, two trapezoidal scrapers rotate around intermediate shaft, trapezoidal scrapers are interlaced and sleeved on intermediate shaft, the power of scraper device rotation comes from the thrust of water-based adhesive entering conveying pipeline on trapezoidal scrapers, trapezoidal scrapers contact the inner wall of conveying pipeline, so as to prevent water-based adhesive from adhering to the inner wall of conveying pipeline, and the rotation of trapezoidal scrapers can drive water-based adhesive to be fully mixed, which is equivalent to stirring water-based adhesive.

[0007] Preferably, the top end of the main body is provided with a feed inlet, and the bottom end is provided with a discharge outlet. The water-based adhesive in the ink enters the first filter area directly from the feed inlet, and after preliminary filtration in the first filter area, it passes through the conveying pipeline-second filter area-conveying pipeline-third filter area in turn, and finally flows out through the discharge outlet.

[0008] Preferably, the included angle between the two trapezoidal scrapers is 180°, and the surface of the trapezoidal scraper is provided with fish scale pattern. That is to say, on the cross section of the pipeline, the two scrapers can just contact the opposite two inner walls respectively, so that no matter which side of the inner wall of the pipeline the adhesive adheres to, the scraper can scrape it off. The angle formed between the two trapezoidal scrapers is 180°, that is, the two trapezoidal scrapers are arranged in a straight line horizontally in the conveying pipeline, which is equivalent to dividing the vertical pipeline into several areas. The pushing force of the material entering the conveying pipeline drives the trapezoidal scraper to rotate, which can help to mix the material while scraping the inner wall of the pipeline, which is equivalent to a stirring effect. Since the scraping device is provided with a plurality of scraping devices, that is, the material flows downward and contacts each scraping device in turn, and is stirred once, and the scraper scrapes the inner wall to prevent the material from adhering and causing blockage, and the fish scale pattern on the trapezoidal scraper can well prevent the material from stagnating and adhering on the trapezoidal scraper, further preventing blockage.

[0009] Preferably, a plurality of folded filter plates are arranged inside the first filter area, and the folded filter plates are arranged in a "Z" shape and are fixedly connected to the inner wall of the main body. That is to say, the filter plates distributed in the first filter area are arranged in a "Z" shape, and the "Z" shape is relatively inclined, not completely parallel to the first filter plate, but arranged in sequence. The material entering the first filter area will gradually pass through these filter plates layer by layer, improving the filtering efficiency.

[0010] It should be noted that the filter plate is detachable, and stainless steel bolts and nuts are used. Stainless steel has good corrosion resistance. Specifically, holes are drilled in the corresponding positions of the edge of the filter plate and the inner wall of the main body. The bolt passes through the hole on the filter plate and the hole on the inner wall of the main body, and then the nut is tightened to fix the filter plate. This way of connection is firm and can withstand a large impact force of the material.

[0011] Preferably, the middle of the inner wall of the top end of the second filtering area is fixed with a motor, the output end of the motor is fixedly connected with a rotating shaft, and the outer fixed connection of the rotating shaft is provided with a spiral filter plate. That is to say, the rotating shaft is arranged in the middle of the second filtering area, the rotating shaft is vertically arranged, the top end of the rotating shaft is connected with the output end of the motor, the motor is fixed on the top end of the second filtering area, and the outer fixed connection of the rotating shaft is provided with a spiral filter plate. These spiral filter plates are spirally arranged in the vertical direction of the rotating shaft. It is equivalent to spirally winding outside the rotating shaft. When the motor rotates, the motor can drive the rotating shaft to rotate, thereby driving the spiral filter plate wound outside the rotating shaft to rotate. When the adhesive flows through the spiral filter plate, it will advance along the spiral path, thereby having a longer residence time and a more complex flow path during the filtering process, so that the impurities can be more fully contacted with the filter plate and intercepted, and deep filtration is realized. And in the rotating process, the impurities on the surface of the filter plate will be thrown off the filter plate due to centrifugal force or relative motion with the adhesive, thereby ensuring that the filter channel of the filter plate is unobstructed and effectively preventing blockage.

[0012] Further explanation, the motor is connected to the control terminal, that is, the operation and rotation speed of the motor can be controlled through the control terminal, so as to control the rotation speed of the spiral filter plate. The specific setting and connection mode is adopted by conventional technology, therefore, no detailed description is made.

[0013] Preferably, the third filtering area is internally provided with a filter core, the filter core is fixedly connected with a micro motor on both sides, and the micro motors are symmetrically arranged. This means that in the third filtering area, the material is filtered by the filter core, the filter core is arranged in the middle of the third filtering area, and is also designed to be detachable, stainless steel bolts and nuts are adopted, the specific setting and connection mode adopts conventional technology, the outer wall of the filter core is fixedly connected with a vibration motor on both sides, vibration is generated through the vibration motor, thereby driving the filter core to vibrate. The vibration makes the impurities attached to the surface of the filter core fall off, and at the same time, the vibration is generated in the filtering process of the material, which improves the impurity interception effect and further helps the filtration.

[0014] Preferably, the bottom of the first filtering area, the second filtering area and the third filtering area is provided with an inclined plate, one end of the inclined plate is fixedly connected with the inner wall of the body, the other end is obliquely arranged downward, and a plurality of flow limiting holes are uniformly arranged on the inclined plate. That is to say, after the material passes through the filter plate or the filter core, it will reach the inclined plate, and flow obliquely downward under the guidance of the inclined plate, and at the same time, it will enter the inside of the conveying pipe through the flow limiting hole. That is to say, the inclined plate is arranged at the upper end of the conveying pipe, so that the material can enter the conveying pipe downward through the flow limiting hole. Specifically, when the adhesive passes through the filter screen of the first filtering area, it will drop on the inclined plate, and then converge to the lower end of the inclined plate along the inclined direction of the inclined plate. At the same time, part of the adhesive penetrates downward through the flow limiting hole. These adhesives will smoothly pass through the conveying pipe and enter the next filtering area.

[0015] Preferably, the first filtering area, the second filtering area and the third filtering area are slidably connected with the centralized collecting box through the slide rail near the side of the inclined plate inclined downward, the top end of the centralized collecting box is open, and the end of the inclined plate inclined downward is tightly attached to the side close to the inside of the body of the top end of the centralized collecting box. This means that the water-based adhesive is guided downward by the inclined plate, and part of the adhesive flows into the centralized collecting box, and the centralized collecting box is connected with the filtering area through the slide rail, which is similar to the design of a drawer, and the centralized collecting box can be taken out and put in through the sliding of the slide rail.

[0016] Further, the water-based adhesive in the centralized collecting box of the first filtering area and the second filtering area can be re-entered from the feeding port for re-filtering, so that the water-based adhesive can be fully filtered, and the quality and performance of the water-based adhesive are improved.

[0017] Beneficial effects

[0018] (1) The device is provided with three filtering areas, and the diameters of the filter screens gradually decrease from the first filtering area to the third filtering area, so that the graded filtering mode can effectively remove impurities of different sizes, the folded filter plate of the first filtering area increases the filtering area by using the "Z" shape structure, and large-particle impurities can be intercepted; the spiral filter plate of the second filtering area is driven to rotate by the motor, the spiral structure of the spiral filter plate prolongs the filtering path of the adhesive, and medium-sized impurities can be intercepted; and the filter core of the third filtering area vibrates under the driving of the micro motor, and can finely filter small impurities, so that high-purity water-based adhesive is finally obtained.

[0019] (2) The scraper device in the conveying pipeline can effectively prevent the adhesive from adhering and accumulating on the inner wall of the pipeline. The two trapezoidal scrapers with an included angle of 180° can comprehensively cover the inner wall of the pipeline, the fish scale-shaped lines on the surfaces of the two trapezoidal scrapers enhance the scraping effect, in the rotating process of the spiral filter plate, impurities can be prevented from blocking the filter plate, the filter core vibrates under the driving of the micro motor, impurity particles adhering to the surface of the filter core can be loosened and fallen off, and the filter core is prevented from being blocked. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a whole schematic view of the utility model;

[0021] Figure 2 It is a first filtering area internal structure schematic view in the utility model;

[0022] Figure 3 It is a second filtering area internal structure schematic view in the utility model;

[0023] Figure 4 It is a third filtering area internal structure schematic view in the utility model;

[0024] Figure 5 It is a conveying pipeline internal structure schematic view in the utility model;

[0025] Figure 6 This is a schematic diagram of the scraper device structure in this utility model;

[0026] Figure 7 This is a schematic diagram of the inclined plate structure in this utility model.

[0027] In the diagram: 1-Main body, 1a-Inlet, 1b-Outlet, 11-First filtration zone, 12-Second filtration zone, 120-Motor, 13-Third filtration zone, 2-Conveying pipe, 3-Scraper device, 31-Intermediate shaft, 32-Trapezoidal scraper, 4-Folded filter plate, 5-Spiral filter plate, 50-Rotating shaft, 6-Filter element, 7-Micro motor, 8-Inclined plate, 80-Flow limiting hole, 9-Central collection box. Detailed Implementation

[0028] The following will refer to the appendix in the embodiments of this utility model. Figure 1 - Appendix Figure 7 The technical solutions in the embodiments of this utility model are clearly and completely described. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0029] Example 1: As Figure 1The utility model discloses first specific embodiment provides a kind of water-based adhesive filtering equipment, including main body 1, main body 1 is sequentially divided into first filter area 11, second filter area 12 and third filter area 13 from top to bottom inside, first filter area 11, second filter area 12 and third filter area 13 are sequentially connected by conveying pipeline 2 between, conveying pipeline, 2 inside is uniformly provided with scraper device 3, scraper device 3 includes middle shaft 31, two trapezoidal scrapers 32 are sleeved on middle shaft 31, the both ends of middle shaft 31 are fixedly connected with the inner wall of both sides of conveying pipeline 2 by bearing, the filter screen diameter inside first filter area 11, second filter area 12 and third filter area 13 gradually decreases, and each conveying pipeline 2 is obliquely downwardly arranged.The filter screen of first filter area 11 can first intercept some large solid particles possibly existing in water-based adhesive, with adhesive entering second filter area 12, its filter screen diameter decreases, and some fine insoluble particles or condensed small glue groups etc.

[0030] Secondly, the obliquely downwardly arranged conveying pipeline 2 enables the water-based adhesive to flow downward in the conveying pipeline 2 naturally by means of its own gravity, and meanwhile, the natural flow of the adhesive under the action of gravity is more stable, and is less likely to fluctuate in flow rate due to unstable operation of a power device, thereby improving the filtering efficiency of the entire filtering equipment and production efficiency.

[0031] The angle between the two trapezoidal scrapers 32 is 180°, and the surface of the trapezoidal scraper 32 is provided with fish scale pattern. When the middle shaft 31 rotates, the two trapezoidal scrapers 32 with an angle of 180° can effectively cover the inner wall of the conveying pipeline 2, which can ensure uniform treatment of the adhesive in the circumferential direction of the pipeline, prevent the adhesive from accumulating in a certain part, ensure the cleaning of the entire pipeline inner wall, and maintain the smoothness of the pipeline. The design of the two trapezoidal scrapers 32 with an angle of 180° can balance the resistance on both sides of the scraper, so that the middle shaft 31 can rotate more stably in the bearing, reducing the wear and failure probability of the equipment. The fish scale pattern on the surface of the trapezoidal scraper 32 increases the contact area between the scraper and the adhesive, which can effectively destroy the thick scale layer formed on the inner wall of the pipeline due to the large viscosity, and improve the efficiency of scraping.

[0032] The first filtering area 11 is internally provided with a plurality of folded filter plates 4, which are arranged in a "Z" shape and fixedly connected with the inner wall of the main body 1. The "Z" shaped folded filter plate 4 has multiple folding surfaces for filtering, greatly increasing the filtering area. The larger filtering area can make the adhesive fully contact with the folded filter plate 4, so as to intercept more impurities and filter more quickly and effectively. The "Z" shaped folded filter plate 4 has multiple support points connected with the inner wall of the main body 1, which can better withstand these forces and is not easy to deform or damage, thereby ensuring the reliability of the filtering equipment during long-term operation.

[0033] The second filtering area 12 is internally fixed with a motor 120 at the top end of the inner wall, and the output end of the motor 120 is fixedly connected with a rotating shaft 50, and the outer surface of the rotating shaft 50 is fixedly connected with a spiral filter plate 5. When the adhesive flows through the spiral filter plate 5, it needs to move along the spiral path, which makes the adhesive have a longer residence time and a more complex flow path during the filtering process, so that the impurities can be more fully contacted with the filter plate and intercepted, realizing deep filtration. During the rotation of the spiral filter plate 5, the impurities on the surface of the filter plate will be thrown off the filter plate due to centrifugal force or relative motion with the adhesive, thereby ensuring the smoothness of the filter channel of the filter plate, which can effectively prevent the impurities in the adhesive from blocking the filter plate.

[0034] The third filtering area 13 is internally provided with a filter core 6, and the filter core 6 is fixedly connected with a micro motor 7 on both sides, and the micro motors 7 are symmetrically arranged. The micro motor 7 can drive the filter core 6 to vibrate. In the filtering process, the tiny impurities in the water-based adhesive are easy to accumulate on the surface of the filter core, causing the filter core to be blocked. When the micro motor 7 works, the filter core 6 vibrates, which can loosen and fall off the impurity particles attached to the surface of the filter core, thereby ensuring that the filtering channel of the filter core is unobstructed and maintaining good filtering performance. When the adhesive passes through the filter core 6, it is not simply and smoothly flowed, but constantly changes the flow direction and speed under the action of vibration, which makes the impurities in the adhesive more likely to contact the filter core, increasing the probability of impurities being intercepted.

[0035] The bottom of the first filtering area 11, the second filtering area 12 and the third filtering area 13 is provided with an inclined plate 8, one end of the inclined plate 8 is fixedly connected with the inner wall of the body 1, the other end is obliquely downward, and a plurality of flow limiting holes 80 are uniformly arranged on the inclined plate 8. The setting of the inclined plate 8 can guide the filtered adhesive to flow to the lower end of the inclined plate 8 under the action of gravity, so as to facilitate the adhesive to smoothly enter the next link. In addition, the design of the inclined plate 8 can make the adhesive flow to one direction as much as possible, reduce the residue of the adhesive in the filtering area, and improve the collection efficiency of the adhesive. The flow limiting holes 80 uniformly arranged on the inclined plate 8 can control the flow of the adhesive, so as to adjust the flow rate of the adhesive.

[0036] The first filtering area 11, the second filtering area 12 and the third filtering area 13 are slidably connected with a centralized collection box 9 through a slide rail near the side of the inclined plate 8 which is obliquely downward, the top end of the centralized collection box 9 is open, and the obliquely downward end of the inclined plate 8 is closely attached to the side of the top end of the centralized collection box 9 which is close to the inside of the body 1. The centralized collection box 9 is slidably connected through the slide rail while being closely attached to the obliquely downward side of the inclined plate 8, which makes the adhesive gathered through the inclined plate 8 flow directly into the centralized collection box 9, facilitating the centralized collection of the filtered adhesive. The centralized collection box 9 is installed along the slide rail, which is convenient and fast, and when it is necessary to clean the centralized collection box 9 or check and maintain it, it can be easily slid out of the slide rail.

[0037] Working principle: in use, first, water-based adhesive from the body 1 top inlet into the first filter area 11, the first filter area 11 in the folding filter plate 4 will be larger particles of impurities intercepted in the filter plate surface, after the folding filter plate 4 filter adhesive drop on the first filter area 11 bottom inclined plate 8. Inclined plate 8 one end high one end low inclined design, the adhesive flows under the action of gravity to the low end. The flow limiting hole 80 on the inclined plate 8 can control the flow rate of the adhesive, let the adhesive through at the appropriate speed. After the first filter area 11 completes the preliminary filtration of the adhesive through the flow limiting plate 80 into the conveying pipe 2, inside the conveying pipe 2, the adhesive contact scraper device 3, under the thrust of the adhesive to push trapezoidal scraper 32 along the middle shaft 31 rotation, trapezoidal scraper 32 in the rotation to the inner wall of the conveying pipe 2 is scraped, prevent the adhesive in the sticky ingredients attached to the inner wall of the pipe and block the conveying pipe 2, trapezoidal scraper 32 surface fish scale shaped lines not only can enhance the scraping effect, but also in the rotating process of the adhesive produced stirring effect, make the adhesive mixing more uniform. Adhesive in the inclined downward setting of the conveying pipe 2 inner wall, under the action of gravity into the second filter area 12, control terminal control motor 120 rotation, motor 120 drive rotating shaft 50 rotation, further drive spiral filter plate 5 rotation, further filtration, the rotation of the spiral filter plate 5 can also prevent the adhesive in the impurities block the filter plate, after the second filter area 12 filter adhesive drop on the bottom of the inclined plate 8, similarly, the adhesive through the flow limiting hole 80 down into the conveying pipe 2 and push the scraper device 3 in the conveying pipe 2 rotation, scraper device 3 to the inner wall of the conveying pipe 2 is scraped, while fully mixing water-based adhesive, then enter the third filter area 13, in the third filter area 13, the adhesive contact to the filter core 6 for the last fine filtration, at this time, by controlling the terminal control filter core 6 both sides of the symmetrical arrangement of the micro motor 7 work, drive filter core 6 vibration, make the impurity particles attached to the filter core surface loose and fall off, prevent the filter core 6 is blocked by the small impurities in the adhesive, make the impurity particles attached to the filter core surface loose and fall off, after the third filter area 13 filter adhesive drop on the bottom of the inclined plate 8, under the guidance of the adhesive flow through the slide rail connected to the centralized collection tank 9, will be centralized collection tank 9 through the slide rail slide out, complete the adhesive filtration collection process.

Claims

1. An aqueous adhesive filtering device, comprising a main body (1), the inside of the main body (1) is sequentially divided into a first filtering area (11), a second filtering area (12) and a third filtering area (13) from top to bottom, characterized in that, The first filtering area (11), the second filtering area (12) and the third filtering area (13) are sequentially connected by conveying pipes (2), the conveying pipes (2) are uniformly provided with scraper devices (3) inside, the scraper devices (3) comprise middle shafts (31), the middle shafts (31) are sleeved with two trapezoidal scrapers (32), the two ends of the middle shafts (31) are fixedly connected with the inner walls of the two sides of the conveying pipes (2) through bearings, the diameters of filter screens inside the first filtering area (11), the second filtering area (12) and the third filtering area (13) gradually decrease, and each conveying pipe (2) is arranged obliquely downward.

2. The water-based adhesive filtering apparatus according to claim 1, wherein, The top end of the main body (1) is provided with an inlet (1a), and the bottom end is provided with an outlet (1b).

3. The water-based adhesive filtering apparatus according to claim 1, wherein, The included angle between the two trapezoidal scrapers (32) is 180°, and the surface of the trapezoidal scraper (32) is provided with fish scale patterns.

4. The water-based adhesive filtering apparatus according to claim 1, wherein, The first filtering area (11) is provided with a plurality of folded filter plates (4), the folded filter plates (4) are arranged in a "Z" shape, and the periphery is fixedly connected with the inner wall of the main body (1).

5. The aqueous adhesive filtration apparatus of claim 1, wherein, The top end inner wall of the second filtering area (12) is fixedly provided with a motor (120), the output end of the motor (120) is fixedly connected with a rotating shaft (50), and the outer end of the rotating shaft (50) is fixedly connected with a spiral filter plate (5).

6. The water-based adhesive filtering apparatus according to claim 1, wherein, The third filtering area (13) is provided with a filter core (6), the two sides of the filter core (6) are fixedly connected with micro motors (7), and the micro motors (7) are symmetrically arranged.

7. The water-based adhesive filtering apparatus according to claim 1, wherein, The bottom of the first filtering area (11), the second filtering area (12) and the third filtering area (13) are provided with inclined plates (8), one end of the inclined plate (8) is fixedly connected with the inner wall of the main body (1), the other end is arranged obliquely downward, and a plurality of flow limiting holes (80) are uniformly arranged on the inclined plate (8).

8. The water-based adhesive filtering apparatus according to claim 1, wherein, The first filtering area (11), the second filtering area (12) and the third filtering area (13) are provided with a centralized collection box (9) which is slidably connected through a slide rail on the side close to the obliquely downward side of the inclined plate (8), the top end of the centralized collection box (9) is open, and the obliquely downward end of the inclined plate (8) is closely attached to the side close to the inner side of the main body (1) of the top end of the centralized collection box (9).

Images