Fiber disc filter

Abstract

This utility model discloses a fiber disc filter tank, including a filter tank and a filter device installed inside the filter tank. The filter device includes a rotating shaft and several disc assemblies. Each disc assembly includes multiple sector-shaped frame plates and fiber filter cloth covering the outer surface of the sector-shaped frame plates. A cleaning device for cleaning the fiber filter cloth of each disc assembly is installed at the bottom of the filter tank. By setting up the cleaning device, when there is a large amount of waste residue on the fiber filter cloth, the cleaning device can be activated to clean the fiber filter cloth around the rotating disc assembly using scrapers and cleaning brushes. The scrapers remove dirt from the surface of the fiber filter cloth, and the cleaning brushes sweep away the scraped impurities, thus allowing the fiber filter cloth to be reused after cleaning.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, specifically to a fiber disc filter tank. Background Technology

[0002] Fiber disc filters are a new type of wastewater treatment equipment. Their core structure consists of a two-layer fiber disc: a filter cloth and a fiber mesh. Wastewater first passes through the filter cloth and then comes into contact with and is filtered again by the fiber mesh, thus achieving wastewater filtration. After a period of wastewater treatment in the fiber disc filter, a large amount of impurities accumulate on the outer surface of the filter cloth and fiber mesh, affecting the filtration effect. Therefore, backwashing of the filter disc is necessary. Typically, suction cups are installed inside the filter tank and pressed against the outer surface of the filter disc. As the filter disc and suction cup rotate relative to each other, the suction cups suck up the impurities from the outer surface of the filter disc. However, due to prolonged use and repeated backwashing, the filter cloth will experience varying degrees of wear. Since the suction cups are usually fixed to the inner wall of the filter tank, gaps will appear between the filter disc and the suction cups when the filter cloth wears down, affecting the suction effect of the suction cups and thus the cleaning rate of the outer surface of the filter disc.

[0003] In view of this, the inventors of this case conducted in-depth research on the above-mentioned problems, which led to the creation of this case. Utility Model Content

[0004] The purpose of this invention is to provide a fiber disc filter tank to solve the problems existing in the background art.

[0005] To achieve the above objectives, this utility model adopts the following technical solution:

[0006] A fiber disc filter tank, characterized in that: it includes a filter tank, and a filter device is provided inside the filter tank. The filter device includes a rotating shaft rotatably disposed on the filter tank and a plurality of disc assemblies evenly distributed on the rotating shaft. Each disc assembly includes a plurality of sector-shaped frame plates and a fiber filter cloth covering the outer surface of the sector-shaped frame plates. A cleaning device for cleaning the fiber filter cloth of each disc assembly is installed at the bottom of the filter tank.

[0007] Furthermore, the cleaning device includes a cleaning pipe fixed inside the filter tank. The cleaning pipe is arranged along the length of the rotating shaft and at the bottom of each of the rotating disk assemblies. A first connecting pipe is detachably arranged along the length of the cleaning pipe that is horizontal and perpendicular to the rotating shaft. At least one second connecting pipe and at least one third connecting pipe are arranged along the length of the first connecting pipe that is vertical and perpendicular to the rotating shaft. The rotation direction of the rotating disk assembly is defined as forward and backward. A scraper is arranged on each of the second connecting pipes facing the two rotating disk assemblies. A cleaning brush is arranged on each of the third connecting pipes facing the two rotating disk assemblies. The scraper is arranged at the rear end of the cleaning brush. The scraper and the cleaning brush abut against the fiber filter cloth for cleaning the fiber filter cloth.

[0008] Furthermore, the cleaning device also includes a cleaning pump located outside the filter tank. The cleaning pipe is provided with a first through hole at the connection point of each of the first connecting pipes, the second connecting pipe is provided with a second through hole at the connection point of the second connecting pipe and the scraper, and the third connecting pipe is provided with a third through hole at the connection point of the third connecting pipe and the cleaning brush. The cleaning pipe, the first through hole, the second through hole and the third through hole are all connected to each other, and the cleaning pipe is connected to the cleaning pump.

[0009] Furthermore, a clear water pool is provided outside the filter pool, and a communication port is provided between the clear water pool and the filter pool. The rotating shaft is located in the filter pool near the communication port, and the rotating shaft is connected to the clear water pool through the communication port. An inlet pipe is fixed on the side of the filter pool away from the clear water pool, and an outlet pipe is connected to the end of the clear water pool away from the filter pool.

[0010] Furthermore, the filtration tank is provided with an inlet weir near the inlet pipe, and the clear water tank is provided with an outlet weir near the outlet pipe.

[0011] Furthermore, a drive device for driving the rotating shaft is provided at the top of the filter tank. The drive device includes a motor and a driven sprocket wound around the surface of the rotating shaft. The drive end of the motor is connected to a driving sprocket, and a chain is sleeved between the driving sprocket and the driven sprocket.

[0012] Furthermore, each of the sector-shaped frame plates has a tube fixed to the side near the rotating shaft, and the side wall of the rotating shaft has a hole for inserting the tube.

[0013] Furthermore, a detachable connecting unit is provided between the insertion tube and the insertion hole. The connecting unit includes a first connecting member and a second connecting member that are screwed together and coaxial. The axis is a straight line that coincides with the extension line of the central axis of the first connecting member and the extension line of the central axis of the second connecting member. The screwing surface of the first connecting member includes a first rotating surface, which is formed by a first rotating line of a predetermined length inclined outward from the axis moving along the path of an Archimedean spiral at a predetermined distance from the axis. The screwing surface of the second connecting member includes a second rotating surface, which is formed by a second rotating line of a predetermined length inclined inward from the axis moving along the path of an Archimedean spiral at a predetermined distance from the axis. The direction of movement of the second rotating line is the same as the direction of movement of the first rotating line.

[0014] Furthermore, the first rotating line moves counterclockwise along the path of the Archimedean spiral to form the first rotating surface, and the second rotating line moves counterclockwise along the path of the Archimedean spiral to form the second rotating surface.

[0015] By adopting the aforementioned design scheme, the beneficial effects of this utility model are as follows: by setting up a cleaning device, when there is a lot of waste residue on the fiber filter cloth, the cleaning device can be operated to clean each fiber filter cloth around the rotating turntable assembly of the scraper and cleaning brush. The scraper scrapes off the dirt on the surface of the fiber filter cloth, and the cleaning brush sweeps away the scraped impurities, so that the fiber filter cloth can be reused after cleaning. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the first connecting pipe, the second connecting pipe, and the third connecting pipe in this utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the turntable assembly of this utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the fiber filter cloth in this utility model;

[0020] Figure 5 This is an exploded view of the connecting unit in this utility model;

[0021] In the diagram: Filter tank 1, Inlet pipe 11, Inlet weir 12, Clear water tank 2, Connecting port 21, Outlet pipe 22, Outlet weir 23, Rotating shaft 31, Insertion hole 311, Turntable assembly 32, Sector frame plate 321, Fiber filter cloth 322, Insertion tube 323, Motor 41, Chain 42, Cleaning device 5, Cleaning pipe 51, First connecting pipe 52, First through hole 521, Second connecting pipe 53, Second through hole 531, Third connecting pipe 54, Third through hole 541, Scraper 55, Cleaning brush 56, Cleaning pump 57, Connecting unit 6, First connector 61, First rotating surface 611, First rotating line 6111, First pressing surface 612, Second connector 62, Second rotating surface 621, Second rotating line 6211, Second pressing surface 622. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] The reference provided by this utility model Figures 1 to 5 :

[0024] For ease of description, the rotation direction of the turntable assembly 32 (which will be described in detail below) is defined as forward, and the reverse is backward.

[0025] A fiber disc filter includes a filter tank 1 and a clear water tank 2 disposed beside the filter tank 1. A communication port 21 is provided between the clear water tank 2 and the filter tank 1. An inlet pipe 11 is fixed to the side of the filter tank 1 away from the clear water tank 2, and an outlet pipe 22 is connected to the end of the clear water tank 2 away from the filter tank 1. Preferably, an inlet weir 12 is provided in the filter tank 1 near the inlet pipe 11, and an outlet weir 23 is provided in the clear water tank 2 near the outlet pipe 22.

[0026] The filter tank 1 is equipped with a filtration device, which includes a rotating shaft 31 rotatably installed inside the filter tank 1 and several rotating disk assemblies 32 evenly distributed on the rotating shaft 31. The rotating shaft 31 is located near the connecting port 21 in the filter tank 1. The rotating shaft 31 is connected to the clear water tank 2 through the connecting port 21. Wastewater enters the filter tank 1 through the inlet pipe 11, is filtered by several fiber filter cloths 322 (described in detail below) on the rotating disk assembly 32, enters the rotating shaft 31, flows to the connecting port 21, and then flows out through the outlet pipe 22 in the clear water tank 2.

[0027] Specifically, each turntable assembly 32 includes multiple sector-shaped frame plates 321 and a fiber filter cloth 322 covering the outer surface of the sector-shaped frame plates 321. Each sector-shaped frame plate 321 has an insertion tube 323 fixed on the side near the rotating shaft 31. The side wall of the rotating shaft 31 has an insertion hole 311 for inserting the insertion tube 323. The sector-shaped frame plate 321 is detachably connected to the insertion hole 311 of the rotating shaft 31 through the insertion tube 323. When installing the sector-shaped frame plate 321, the insertion tube 323 is first inserted into the insertion hole 311, so that the inside of the sector-shaped frame plate 321 is connected to the inside of the rotating shaft 31 through the insertion tube 323. Water filtered by the fiber filter cloth 322 can then enter the inside of the rotating shaft 322 along the insertion tube 323.

[0028] Furthermore, a drive device for rotating the shaft 31 is provided at the top of the filter tank 1. The drive device includes a motor 41 and a driven sprocket 42 wound around the surface of the shaft 31. The drive end of the motor 41 is connected to a driving sprocket 43, and a chain 42 is sleeved between the driving sprocket 43 and the driven sprocket 42. Under the transmission action of the chain 42, the motor 41 can drive the shaft 31 to rotate in the filter tank 1, thereby driving the turntable assembly 32 to rotate.

[0029] A cleaning device 5 for cleaning the fiber filter cloth 322 of each rotating disc assembly 32 is installed at the bottom of the filter tank 1. The cleaning device 5 includes a cleaning pipe 51 fixed inside the filter tank 1. The cleaning pipe 51 is arranged at the bottom of each rotating disc assembly 32 along the length direction of the rotating shaft 31. A first connecting pipe 52 is detachably arranged on the cleaning pipe 51 in a horizontal direction perpendicular to the axis of the rotating shaft 31. At least one second connecting pipe 53 and at least one third connecting pipe 54 are arranged vertically on the first connecting pipe 52. A scraper 55 is arranged on each of the second connecting pipes 53 facing the two rotating disc assemblies 32. A cleaning brush 56 is arranged on each of the third connecting pipes 54 facing the two rotating disc assemblies 32. The scraper 55 is arranged at the rear end of the cleaning brush 56. The scraper 55 and the cleaning brush 56 abut against the fiber filter cloth 322 for cleaning the fiber filter cloth 322.

[0030] Furthermore, the cleaning device 5 also includes a cleaning pump 57 located outside the filter tank 1. The cleaning pipe 51 is provided with a first through hole 521 at the connection point of each first connecting pipe 52, the second connecting pipe 53 is provided with a second through hole 531 at the connection point of the scraper 55, and the third connecting pipe 54 is provided with a third through hole 541 at the connection point of the cleaning brush 56. The cleaning pipe 51, the first through hole 521, the second through hole 531 and the third through hole 541 are all connected, and the cleaning pipe 51 is connected to the cleaning pump 57. When it is necessary to rinse the sludge on the surface of the fiber filter cloth 322, the cleaning pump 57 is started, and water is pumped into the cleaning pump 57 through the cleaning pipe 51. The water then flows into the first connecting pipe 52 and then flows to the second connecting pipe 53 and the third connecting pipe 54 respectively. With the rotation of the turntable assembly 32, the scraper 55 on the second connecting pipe 53 first scrapes off the dirt on the surface of the fiber filter cloth 322, and then the cleaning brush 56 on the third connecting pipe 54 sweeps away the scraped impurities, ensuring the cleanliness of the surface of the fiber filter cloth 322. The fiber filter cloth 322 is cleaned twice, which can thoroughly clean it and improve work efficiency.

[0031] A detachable connecting unit 6 is provided between the insertion cannula 323 and the insertion hole 311. The connecting unit 6 includes a first connecting member 61 and a second connecting member 62 that are screwed together and coaxial. The axis of the first connecting member 61 and the axis of the second connecting member 62 coincide. The screwing surface of the first connecting member 61 includes a first rotating surface 611. The first rotating surface 611 is formed by a first rotating line 6111, which is inclined outward from the axis of the first connecting member 61 by a predetermined length, moving along the path of an Archimedean spiral at a predetermined distance from the axis. During rotation, the first rotating line 6111 gradually moves away from the axis of the first connecting member 61. It is worth noting that the outward inclination here means that the end of the first rotating line 6111 pointing towards the second connecting member 62 is inclined outward and away from the axis of the first connecting member 61, while the other end of the first rotating line 6111 is inclined inward and close to the axis of the first connecting member 61.

[0032] The engagement surface of the second connector 62 includes a second rotation surface 621. The second rotation surface 621 is formed by a second rotation line 6211, which is inclined inward to a predetermined length relative to the axis of the second connector 62, moving along an Archimedean spiral path at a predetermined distance from the axis of the second connector 62. During rotation, the second rotation line 6211 gradually moves away from the axis of the second connector 62. It is worth noting that the incline here refers to the end of the second rotation line 6211 pointing towards the first connector 61 tilting inward and approaching the axis of the second connector 62, while the other end of the second rotation line 6211 moves outward away from the axis of the second connector 62.

[0033] The direction of motion of the second rotation line 6211 is the same as that of the first rotation line 6111, so that the second rotation surface 621 and the first rotation surface 611 can fit together and rotate together.

[0034] In this embodiment, the detachable connecting unit 6 is provided with a first rotating surface 611 on the first connecting member 61 and a second rotating surface 621 on the second connecting member 62. The first connecting member 61 and the second connecting member 62 are connected by rotating the first rotating surface 611 and the second rotating surface 621, so that the first connecting member 61 and the second connecting member 62 rotate synchronously. When the first connecting member 61 and the second connecting member 62 are in contact and the first rotating surface 611 and the second rotating surface 621 are facing each other, the first rotating surface 611 is rotated relative to the second rotating surface 621 in the opposite direction to the direction of rotation of the first rotating line 6111 around the central axis of the first connecting member 61. The distance between the first rotating surface 611 and the second rotating surface 621 gradually decreases until they are in contact. The first connecting member 61 and the second connecting member 62 are then connected. After they are in contact, the first connecting member 61 continues to rotate in the same direction, so that the first connecting member 61 and the second connecting member 62 are fastened more tightly.

[0035] After the first connector 61 and the second connector 62 are connected, the first rotating surface 611 is rotated relative to the second rotating surface 621. The direction of rotation is the same as the direction of rotation of the first rotating line 6111 around the central axis of the first connector 61. The distance between the first rotating surface 611 and the second rotating surface 621 gradually increases until the first connector 61 and the second connector 62 can be separated from each other in the axial direction. The connection between the second connector and the first connector is released. After the first connector 61 and the second connector 62 are separated, the disassembly of the first connector 61 and the second connector 62 is completed.

[0036] Furthermore, the engagement surface of the first connector 61 also includes a first pressing surface 612 that intersects with the first rotating surface 611, and the engagement surface of the second connector 62 includes a second pressing surface 622 that intersects with the second rotating surface 621. The first pressing surface 612 can fit against the end face of the second connector 62 facing the first connector 61, and the second pressing surface 622 can fit against the end face of the first connector 61 facing the second connector 62. During the engagement process of the first connector 61 and the second connector 62, the distance between the first pressing surface 612 and the end face of the second connector 62 facing the first connector 61 gradually decreases until the two surfaces fit together. At this time, the second pressing surface 622 also fits against the end face of the first connector 61 facing the second connector 62.

[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fiber disc filter tank, characterized in that: The filter includes a filter tank, inside which a filter device is provided. The filter device includes a rotating shaft rotatably mounted on the filter tank and a plurality of rotating disk assemblies evenly distributed on the rotating shaft. Each rotating disk assembly includes a plurality of sector-shaped frame plates and a fiber filter cloth covering the outer surface of the sector-shaped frame plates. A cleaning device for cleaning the fiber filter cloth of each rotating disk assembly is installed at the bottom of the filter tank.

2. The fiber disc filter tank according to claim 1, characterized in that... The cleaning device includes a cleaning pipe fixed inside the filter tank. The cleaning pipe is arranged along the length of the rotating shaft and at the bottom of each of the rotating disk assemblies. A first connecting pipe is detachably arranged along the length of the cleaning pipe that is horizontal and perpendicular to the rotating shaft. At least one second connecting pipe and at least one third connecting pipe are arranged along the length of the first connecting pipe that is vertical and perpendicular to the rotating shaft. The rotation direction of the rotating disk assembly is defined as forward and backward. A scraper is arranged on each of the second connecting pipes facing the two rotating disk assemblies. A cleaning brush is arranged on each of the third connecting pipes facing the two rotating disk assemblies. The scraper is located at the rear end of the cleaning brush. The scraper and the cleaning brush abut against the fiber filter cloth for cleaning the fiber filter cloth.

3. A fiber disc filter tank according to claim 2, characterized in that... The cleaning device further includes a cleaning pump located outside the filter tank. The cleaning pipe is provided with a first through hole at the connection of each of the first connecting pipes, the second connecting pipe is provided with a second through hole at the connection of the second connecting pipe and the scraper, and the third connecting pipe is provided with a third through hole at the connection of the third connecting pipe and the cleaning brush. The cleaning pipe, the first through hole, the second through hole and the third through hole are all connected to each other, and the cleaning pipe is connected to the cleaning pump.

4. A fiber disc filter tank according to claim 1, characterized in that... A clear water tank is provided outside the filter tank, and a communication port is provided between the clear water tank and the filter tank. The rotating shaft is located in the filter tank near the communication port and is connected to the clear water tank through the communication port. An inlet pipe is fixed on the side of the filter tank away from the clear water tank, and an outlet pipe is connected to the end of the clear water tank away from the filter tank.

5. A fiber disc filter tank according to claim 4, characterized in that... The filter tank is provided with an inlet weir near the inlet pipe, and the clear water tank is provided with an outlet weir near the outlet pipe.

6. A fiber disc filter tank according to claim 1, characterized in that... The top of the filter tank is provided with a drive device for driving the rotating shaft to rotate. The drive device includes a motor and a driven sprocket wound around the surface of the rotating shaft. The drive end of the motor is connected to a driving sprocket, and a chain is sleeved between the driving sprocket and the driven sprocket.

7. A fiber disc filter tank according to claim 1, characterized in that... Each of the fan-shaped frame plates has a tube fixed to the side near the rotating shaft, and the side wall of the rotating shaft has a hole for inserting the tube.

8. A fiber disc filter tank according to claim 7, characterized in that... A detachable connecting unit is provided between the cannula and the insertion hole. The connecting unit includes a first connecting member and a second connecting member that are screwed together and coaxial. The axis is a straight line that coincides with the extension line of the central axis of the first connecting member and the extension line of the central axis of the second connecting member. The screwing surface of the first connecting member includes a first rotating surface, which is formed by a first rotating line that is outwardly inclined to the axis and moves along the path of an Archimedean spiral at a set distance from the axis. The screwing surface of the second connecting member includes a second rotating surface, which is formed by a second rotating line that is inwardly inclined to the axis and moves along the path of an Archimedean spiral at a set distance from the axis. The direction of movement of the second rotating line is the same as the direction of movement of the first rotating line.

9. A fiber disc filter tank according to claim 8, characterized in that... The first rotating line moves counterclockwise along the path of the Archimedean spiral to form the first rotating surface, and the second rotating line moves counterclockwise along the path of the Archimedean spiral to form the second rotating surface.

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