External residue scraping mechanism of drum filter

Abstract

The utility model provides an external residue scraping mechanism of a rotary drum filter, which comprises a rotary drum filter body and a residue scraping mechanism arranged on the rotary drum filter body, the rotary drum filter body is internally provided with a rotary filtering drum and a washing pipe arranged above the filtering drum, and the washing pipe is connected with the rotary drum. The residue scraping mechanism is composed of a dirt collecting box, a mounting frame and a spraying pipe, the inner side face of the dirt collecting box is attached to the outer surface of a filtering rotary drum in the rotary drum filter body, the dirt collecting box is provided with an inclined scraping face, an upper opening of the scraping face abuts against the surface of the filtering rotary drum, and a lower opening of the scraping face abuts against the surface of the filtering rotary drum. The installation frame is installed in the rotary drum filter body through bolts, the dirt collecting box is connected to the installation frame through three telescopic rods, the outer surfaces of the three telescopic rods are each sleeved with a telescopic spring, and the spraying pipe is installed in the dirt collecting box and located above a scraping face. The water filtering device has the advantages of scraping residues adhered to the surface of the filtering drum, improving the water filtering effect and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of drum filters, in particular to an external residue scraping mechanism for a drum filter. Background Art

[0002] Aquaculture is a production business that uses suitable waters to breed aquatic economic animals and plants. Fisheries are an important part of it. Aquaculture can be divided into freshwater aquaculture, seawater aquaculture, and shallow sea beach aquaculture. China is one of the earliest countries in the world to develop freshwater fish farming. In long-term production practice, people have accumulated rich experience and technology in fish farming. To raise fish, you must first raise water. Water is the environment for fish to survive. Better water quality can reduce the occurrence of fish diseases and is more conducive to the growth and survival of fish. In freshwater aquaculture, the fish pond needs to be treated regularly to improve the water quality of the fish pond. For this purpose, a rotary drum filter is required.

[0003] China Patent Network discloses a fish pond drum filter (publication number: CN 214758672U), which includes a hollow drum and a rotating device. The drum is driven by the rotating device. The inner wall of the drum is provided with a plurality of ribs parallel to the axis of the drum. The ribs are provided with elastic baffles away from the inner wall of the drum. The elastic baffles extending out of the ribs are installed on the ribs so that when the drum rotates, the dirt entering the drum can be blocked by the ribs and the elastic baffles as the drum rotates, and the dirt will not fall into the bottom of the drum, so the filtering effect is better and the efficiency is higher.

[0004] It can be seen from the above technology that the rotary drum filter currently used in aquaculture uses a flushing pipe to reversely flush the drum to prevent the drum from being blocked. However, after long-term use, some impurities are easily adhered to the external surface of the drum after being immersed in water. If not treated, these adhered debris will easily fall into the filtered water with the flushing of the flushing pipe, thereby affecting the water filtering effect. Therefore, there is room for improvement. Utility Model Content

[0005] The utility model provides an external residue scraping mechanism for a rotary drum filter to solve the problems raised in the background technology.

[0006] In order to solve the above problems, the utility model provides an external scraping mechanism of a rotary drum filter, comprising a rotary drum filter body and a scraping mechanism installed on the rotary drum filter body, the rotary drum filter body is provided with a rotating filter drum and a flushing pipe arranged above the filter drum, the scraping mechanism is composed of a dirt collecting box, a mounting frame, and a spray pipe, the inner side surface of the dirt collecting box is in contact with the outer surface of the filter drum in the rotary drum filter body, the dirt collecting box is provided with an inclined scraping surface, and the upper opening of the scraping surface is in conflict with the surface of the filter drum, the mounting frame is installed in the rotary drum filter body by bolts, the dirt collecting box is connected to the mounting frame by three telescopic rods, the outer surfaces of the three telescopic rods are respectively provided with a telescopic spring, and the spray pipe is installed in the dirt collecting box and is located above the scraping surface.

[0007] Preferably, the interior of the dirt collecting box is bucket-shaped, and the bottom is connected to a slag discharge pipe.

[0008] Preferably, a plurality of nozzles for spraying water toward the scraped surface are arranged at equal intervals in the spray pipe, and the spray pipe is connected with one end of the flushing pipe through a pipeline.

[0009] Preferably, the horizontal plane of the upper opening of the scraping surface is lower than the horizontal plane of the upper opening of the other side surfaces of the dirt collecting box.

[0010] The beneficial effects of adopting the above technical solution are:

[0011] 1. The dirt collecting box is attached to the surface of the filter drum, and the scraping surface that resists the surface of the filter drum is cooperated. As the filter drum rotates, the debris adhering to the surface of the filter drum can be scraped off into the dirt collecting box, and then discharged from the residue discharge pipe to prevent it from falling into the water after being filtered by the filter drum, thereby improving the filtering effect.

[0012] 2. The dirt collecting box is stably connected to the drum filter body through three telescopic rods and the mounting frame. The three telescopic rods cooperate with the telescopic spring to make the dirt collecting box retractable, thereby preventing the inclined scraping surface in the dirt collecting box from damaging the surface of the filter drum.

[0013] 3. The spray pipe can be used to flush the debris scraped and accumulated on the scraping surface, so that the debris enters the dirt collecting box along the inclined scraping surface to prevent accumulation on the inclined scraping surface. At the same time, it is also convenient for the scraped debris to be discharged from the slag discharge pipe along with the water flow. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model.

[0015] Figure 2 It is a three-dimensional structural schematic diagram of the residue scraping mechanism of the utility model.

[0016] Among them: 1-drum filter body; 11-filter drum; 12-flushing pipe; 2-residue scraping mechanism; 21-dirt collecting box; 211-scraping surface; 22-mounting frame; 23-spray pipe; 231-spray head; 232-water pipe; 24-telescopic rod; 241-telescopic spring; 25-slag discharge pipe. DETAILED DESCRIPTION

[0017] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0018] In the description of the present invention, unless otherwise specified, "multiple" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0019] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, a movable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0020] like Figure 1-2 In the present embodiment, a scraping residue mechanism for an external drum filter comprises a drum filter body 1 and a scraping residue mechanism 2 mounted on the drum filter body 1, wherein the drum filter body 1 is provided with a rotating filter drum 11 and a flushing pipe 12 arranged above the filter drum 11, wherein the scraping residue mechanism 2 is composed of a dirt collecting box 21, a mounting frame 22, and a spray pipe 23, wherein the inner side surface of the dirt collecting box 21 is in contact with the outer surface of the filter drum 12 in the drum filter body 1, wherein the dirt collecting box 21 is provided with an inclined scraping surface 211, and the upper scraping opening of the scraping surface 211 is in conflict with the surface of the filter drum 11, wherein the mounting frame 22 is mounted in the drum filter body 1 by bolts, wherein the dirt collecting box 21 is connected to the mounting frame 22 by three telescopic rods 24, wherein the outer surfaces of the three telescopic rods 24 are respectively provided with a telescopic spring 241, and wherein the spray pipe 23 is mounted in the dirt collecting box 21 and is located above the scraping surface 211.

[0021] Furthermore, the interior of the dirt collecting box 21 is bucket-shaped, and the bottom is connected to a slag discharge pipe 25 , and the slag discharge pipe 25 is convenient for discharging the debris collected in the dirt collecting box 21 .

[0022] Furthermore, the spray pipe 23 is evenly spaced with a plurality of nozzles 231 for spraying water toward the scraping surface 211. The nozzles 231 are convenient for spraying the water in the spray pipe 23 toward the scraping surface 211, so as to prevent the debris scraped off from the surface of the filter drum 12 by the scraping surface 211 from accumulating in the scraping surface 211, so that the debris falls into the dirt collecting box 21 along the inclined scraping surface 211 along with the flushing of the water flow. The spray pipe 23 is connected to one end of the flushing pipe 12 through the pipe 232, and water is supplied to the spray pipe 23 through the flushing pipe 12, so that the spray pipe 23 can work stably.

[0023] Furthermore, the horizontal plane of the upper end of the scraping surface is lower than the horizontal plane of the upper end of the other side surfaces of the dirt collecting box, and the upper end of the scraping surface is lower than the other side surfaces of the dirt collecting box, thereby preventing the accumulated debris from being washed out of the dirt collecting box when the spray pipe flushes the scraping surface.

[0024] Working process: the filter drum 11 in the rotary filter body 1 rotates. During the rotation, the surface of the filter drum 11 is in contact with the inner side of the dirt collecting box 21, so that the upper opening of the scraping surface 211 can scrape off the debris adhered to the surface of the filter drum 11 from bottom to top, clean the surface of the filter drum 11, and thus improve the filtering effect of water quality. The scraped debris is located in the inclined scraping surface 211. At this time, the spray pipe 23 rinses the scraping surface 211 through the nozzle 231, and then the debris in the scraping surface 211 flows into the dirt collecting box 21 along the inclined scraping surface 211 along the water flow, and then is discharged through the residue discharge pipe 25 connected to the bottom of the dirt collecting box 21. The dirt collecting box 21 is made retractable through the three telescopic rods 24, the mounting frame 22 and the springs 241 sleeved on the surfaces of the three telescopic rods 24, so that the dirt collecting box 21 has retractability, thereby preventing the scraping surface 211 of the dirt collecting box 21 from damaging the surface of the filter drum 12 when scraping off the residue on the surface of the filter drum 11.

[0025] Finally, it should be noted that the above implementation cases are only used to illustrate the present invention, rather than to limit the technical solutions described in the present invention; therefore, although this specification has described the present invention in detail with reference to the above-mentioned embodiments, ordinary technicians in this field should understand that the present invention can still be modified or replaced by equivalents, and all technical solutions and improvements that do not depart from the spirit and scope of the present invention should be included in the scope of the claims of the present invention; technologies not described in detail in the present invention are implemented with existing technologies.

Claims

1. A scraping mechanism for scraping the residue outside a drum filter, comprising a drum filter body and a scraping mechanism mounted on the drum filter body, wherein the drum filter body is provided with a rotating filter drum and a flushing pipe arranged above the filter drum, characterized in that: The scraping residue mechanism is composed of a dirt collecting box, a mounting frame, and a spray pipe. The inner side surface of the dirt collecting box is in contact with the outer surface of the filter drum in the drum filter body. The dirt collecting box is provided with an inclined scraping surface, and the upper opening of the scraping surface is in contact with the surface of the filter drum. The mounting frame is installed in the drum filter body by bolts. The dirt collecting box is connected to the mounting frame by three telescopic rods. The outer surfaces of the three telescopic rods are respectively provided with a telescopic spring. The spray pipe is installed in the dirt collecting box and is located above the scraping surface.

2. The external scraping mechanism of a rotary drum filter according to claim 1, characterized in that: The interior of the dirt collecting box is bucket-shaped, and the bottom is connected to a slag discharge pipe.

3. The external scraping mechanism of a rotary drum filter according to claim 1, characterized in that: The spray pipe is provided with a plurality of spray heads for spraying water toward the scraped surface at equal intervals, and the spray pipe is connected with one end of the flushing pipe through a pipeline.

4. The external scraping mechanism of a rotary drum filter according to claim 1, characterized in that: The horizontal plane of the upper opening of the scraping surface is lower than the horizontal plane of the upper opening of the other side surfaces of the dirt collecting box.

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