Rotary disc filter for sewage treatment

Abstract

The utility model discloses a rotary disc filter for sewage treatment, which comprises a filter case, a fiber filter rotary disc and a movable scraping component, a shaft barrel is arranged on the surface of the filter case, the fiber filter rotary disc is fixedly sleeved on the surface of the shaft barrel, and the movable scraping component is fixedly mounted on the inner side of the filter case. The movable cleaning and scraping assembly comprises a mud settling box, a scraping hopper and a mud scraping shaft, the scraping hopper is fixedly installed on one side of the mud settling box, a scraping groove is formed in the surface of the scraping hopper, the fiber filtering rotary disc is located on the inner side of the scraping groove, and a driving motor used for driving the mud scraping shaft to rotate is fixedly installed on the inner side of the mud settling box. According to the utility model, by arranging the novel movable decontamination structure, the rotating mud scraping shaft is used for scraping impurities such as sludge on the surface of the fiber filtering turntable, and dynamic cleaning is carried out during rotation of the fiber filtering turntable and the mud scraping shaft, so that damage caused by overlarge local acting force on the surface of the fiber filtering turntable can be effectively avoided; the sludge impurity stripping effect is obviously improved through curve fitting.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment equipment, in particular to a rotary disc filter for sewage treatment. Background Art

[0002] The rotary filter is a common solid-liquid separation equipment, which is often used in sewage treatment systems. The rotary filter achieves solid-liquid separation by rotating the disc surface. Wastewater enters through the rotary disc, and the surface of the rotary disc is provided with a filter medium, usually some fine mesh or filter cloth. When the water passes through the filter medium, the solid particles in it are intercepted on the filter medium, and the clean water enters the drainage system through the filter medium. In order to maintain the filtering effect, the rotary filter is usually equipped with an automatic cleaning system. When enough solid particles accumulate on the filter medium, the cleaning system will start, and the solid particles will be removed by backwashing or scraper decontamination, so that the filter medium can restore the filtering performance.

[0003] The existing rotary disc filter is mainly used for cleaning and maintenance by rotating the disc and contacting the scraper in a stationary state to remove the surface dirt. The cleaning effect is not good, and the scraped dirt needs to be left to settle and then discharged through the sewage system. The maintenance work takes a long time and is inefficient. In view of this, the existing problems are studied and improved, and a rotary disc filter for sewage treatment is provided to solve the current problems. The purpose is to achieve the purpose of solving the problems and improving the practical value through this technology. Utility Model Content

[0004] The utility model aims to solve one of the technical problems existing in the prior art or related technology.

[0005] To this end, the technical solution adopted by the utility model is: a rotary filter for sewage treatment, comprising: a filter case, a fiber filter turntable and a motion scraper assembly, the filter case surface is provided with a shaft cylinder, the fiber filter turntable is fixedly sleeved on the shaft cylinder surface, the motion scraper assembly is fixedly installed on the inner side of the filter case, the motion scraper assembly comprises a sludge box, a scraper hopper and a scraper shaft, the scraper hopper is fixedly installed on one side of the sludge box, and a scraper groove is provided on the surface of the scraper hopper, the fiber filter turntable is located on the inner side of the scraper groove, and a driving motor for driving the scraper shaft to rotate is fixedly installed on the inner side of the sludge box, the number of the scraper shafts is several and two are in a group and evenly divided into several groups, each group of scraper shafts is symmetrically arranged on both sides of the fiber filter turntable and slidingly fits with the surface of the fiber filter turntable.

[0006] In a preferred example, the utility model can be further configured as follows: the two sides of the fiber filter turntable are slidably fitted with the side surfaces of the scraper groove, and the two ends of the scraper hopper are fixedly connected with the inner side of the filter box.

[0007] In a preferred example, the utility model can be further configured as follows: the number of groups of the scraper shafts is the same as the number of the fiber filter discs, the scraper shafts are arranged parallel to the surface of the fiber filter discs and are located below the shaft cylinder and arranged in a horizontal direction.

[0008] In a preferred example, the utility model can be further configured as follows: the surfaces of the two scraper shafts in each group are provided with transmission teeth, and the two transmission teeth are synchronously meshed for transmission, and the ends of the scraper shafts are provided with pulleys and are transmission-connected to the output end of the drive motor via the pulleys.

[0009] In a preferred example, the utility model can be further configured as follows: the scraper shaft includes a shaft and a scraper blade, the scraper blade is spirally arranged on the outer periphery of the shaft, a scraper blade is provided on the outer periphery of the scraper blade, and scrapers are provided on both sides of the scraper blade.

[0010] In a preferred example, the utility model can be further configured as follows: the scraping blade is a rubber material component, and the scraping shaft is spirally arranged on the periphery of the scraping blade of the scraping blade.

[0011] The beneficial effects achieved by the utility model are:

[0012] 1. In the utility model, a new type of motion-type decontamination structure is provided, and the sludge and other impurities on the surface of the fiber filter turntable are scraped off by the rotating scraper shaft. Dynamic cleaning is performed during the rotation of the fiber filter turntable and the scraper shaft, which can effectively avoid damage to the surface of the fiber filter turntable caused by excessive local force, and the curve fitting can significantly improve the sludge impurity peeling effect.

[0013] 2. In the utility model, a plurality of scraper shafts are driven by a driving motor to rotate synchronously to remove impurities from the surface of the fiber filter turntable and rotate inside the scraper hopper to transport sewage and the removed impurities horizontally, to transport and recover impurities such as sludge, and to simultaneously clean the surface of the fiber filter turntable and discharge sewage, thereby improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the utility model;

[0015] Figure 2 This is a schematic diagram of the structure of a moving scraping assembly according to an embodiment of the utility model;

[0016] Figure 3 This is a schematic diagram of the structure of a fiber filter turntable and a scraper shaft according to an embodiment of the utility model;

[0017] Figure 4 This is a schematic diagram of the installation structure of the scraper shaft according to one embodiment of the utility model;

[0018] Figure 5 The utility model is a partial structural schematic diagram of a scraper shaft according to an embodiment of the utility model.

[0019] Reference numerals:

[0020] 100, filter housing; 110, shaft barrel;

[0021] 200, fiber filter turntable;

[0022] 300, moving scraping assembly; 310, mud box; 320, scraping hopper; 330, scraping shaft; 340, driving motor; 321, scraping groove; 331, shaft; 332, scraping rotor; 333, scraping blade; 341, pulley. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be noted that the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

[0024] A rotary disc filter for sewage treatment provided by some embodiments of the utility model is described below in conjunction with the accompanying drawings.

[0025] Combination Figure 1-5 As shown, the utility model provides a rotary filter for sewage treatment, comprising: a filter case 100, a fiber filter rotary disc 200 and a moving scraper assembly 300, the filter case 100 is provided with a shaft cylinder 110 on the surface, the fiber filter rotary disc 200 is fixedly sleeved on the surface of the shaft cylinder 110, the moving scraper assembly 300 is fixedly installed on the inner side of the filter case 100, the moving scraper assembly 300 comprises a mud settling box 310, a scraper hopper 320 and a mud scraper shaft 330, the scraper hopper 320 0 is fixedly installed on one side of the silt box 310, and a scraping groove 321 is provided on the surface of the scraping hopper 320, the fiber filter turntable 200 is located on the inner side of the scraping groove 321, and a driving motor 340 for driving the scraping shaft 330 to rotate is fixedly installed on the inner side of the silt box 310. The number of the scraping shafts 330 is several and two are grouped together and evenly divided into several groups. Each group of scraping shafts 330 is symmetrically arranged on both sides of the fiber filter turntable 200 and slides with the surface of the fiber filter turntable 200.

[0026] In this embodiment, two sides of the fiber filter turntable 200 are slidably fitted with the side surfaces of the scraping groove 321 , and two ends of the scraping hopper 320 are fixedly connected to the inner side of the filter box 100 .

[0027] In this embodiment, the number of groups of the scraper shafts 330 is the same as the number of the fiber filter discs 200 . The scraper shafts 330 are arranged parallel to the surface of the fiber filter discs 200 and are located below the shaft cylinder 110 and arranged in a horizontal direction.

[0028] Specifically, the scraper shafts 330 located on both sides of the fiber filter turntable 200 are used to synchronously remove the surface sludge impurities.

[0029] In this embodiment, the surfaces of the two scraper shafts 330 of each group are provided with transmission teeth, and the two transmission teeth are synchronously meshed for transmission. A pulley 341 is provided at the end of the scraper shaft 330 and is transmission-connected to the output end of the drive motor 340 through the pulley 341.

[0030] Specifically, the driving motor 340 is used to drive the scraper shafts 330 , and under the meshing transmission between the scraper shafts 330 , the two scraper shafts 330 rotate in opposite directions and transport the sludge and impurities inside the scraper hopper 320 in the same direction.

[0031] In this embodiment, the scraper shaft 330 includes a shaft 331 and scraper blades. The scraper blades are spirally arranged on the outer periphery of the shaft 331 . A scraper blade 333 is provided on the outer periphery of the scraper blade. Scraper blades 333 are provided on both sides of the scraper blade 333 .

[0032] Specifically, the scraper 320 rotates inside to transport sewage and stripped impurities horizontally, and to transport and recover impurities such as sludge, while simultaneously cleaning the surface of the fiber filter turntable 200 and discharging sewage.

[0033] Furthermore, the scraping blade 333 is a rubber component, and the scraping shaft 330 is spirally arranged on the outer periphery of the scraping blade.

[0034] Specifically, the flexible scraping blade 333 is in contact with the surface of the fiber filter disc 200 to scrape off the sludge and impurities on the surface, thereby avoiding damage to the surface of the fiber filter disc 200.

[0035] The working principle and use process of this utility model:

[0036] During the cleaning of the rotary filter, the fiber filter disc 200 is controlled to rotate at a uniform speed, and the driving motor 340 is turned on to rotate multiple scraper shafts 330 synchronously. The sludge impurities on both sides of the fiber filter disc 200 are cleaned synchronously in the counter-rotation of the relative motion of the scraper shafts 330. The scraper blades rotate horizontally and the scraper blades 333 peel off the sludge impurities on the surface of the fiber filter disc 200. The peeled impurities are transported horizontally along the inner side of the scraper hopper 320 during the rotation of the scraper blades and enter the sludge box 310. They are left to settle in the sludge box 310 to isolate the rotation of the fiber filter disc 200 and avoid the secondary adhesion of the peeled impurities to the surface of the fiber filter disc 200 caused by the rotation disturbance of the fiber filter disc 200.

[0037] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A rotary disc filter for sewage treatment, characterized in that: include: A filter case (100), a fiber filter rotary disc (200) and a moving scraper assembly (300), wherein a shaft cylinder (110) is provided on the surface of the filter case (100), the fiber filter rotary disc (200) is fixedly sleeved on the surface of the shaft cylinder (110), the moving scraper assembly (300) is fixedly installed on the inner side of the filter case (100), and the moving scraper assembly (300) comprises a sludge box (310), a scraper hopper (320) and a scraper shaft (330), and the scraper hopper (320) is fixedly installed on the sludge box. The fiber filter turntable (200) is located on one side of the fiber filter turntable (310), and a scraping groove (321) is provided on the surface of the scraping hopper (320). The fiber filter turntable (200) is located on the inner side of the scraping groove (321). A driving motor (340) for driving a scraping shaft (330) to rotate is fixedly installed on the inner side of the sludge box (310). The scraping shafts (330) are in a plurality of groups and are arranged in pairs and are evenly divided into a plurality of groups. Each group of scraping shafts (330) is symmetrically arranged on both sides of the fiber filter turntable (200) and is slidably fitted with the surface of the fiber filter turntable (200).

2. A rotary disc filter for sewage treatment according to claim 1, characterized in that: The two sides of the fiber filter turntable (200) are slidably fitted with the side surfaces of the scraping groove (321), and the two ends of the scraping hopper (320) are fixedly connected to the inner side of the filter box (100).

3. A rotary disc filter for sewage treatment according to claim 1, characterized in that: The number of groups of the scraper shafts (330) is the same as the number of the fiber filter discs (200); the scraper shafts (330) are arranged parallel to the surface of the fiber filter disc (200) and are located below the shaft cylinder (110) and arranged in a horizontal direction.

4. A rotary disc filter for sewage treatment according to claim 1, characterized in that: The surfaces of the two scraper shafts (330) of each group are provided with transmission teeth, and the two transmission teeth are synchronously meshed for transmission. The ends of the scraper shafts (330) are provided with pulleys (341) and are transmission-connected to the output end of the drive motor (340) via the pulleys (341).

5. A rotary disc filter for sewage treatment according to claim 1, characterized in that: The mud scraping shaft (330) comprises a shaft (331) and a mud scraping rotary blade scraping edge (332), wherein the mud scraping rotary blade scraping edge (332) is arranged in a spiral shape on the outer periphery of the shaft (331), a scraping blade (333) is provided on the outer periphery of the mud scraping rotary blade scraping edge (332), and scraping blades are provided on both sides of the scraping blade (333).

6. A rotary disc filter for sewage treatment according to claim 5, characterized in that: The scraping blade (333) is a rubber material component, and the scraping shaft (330) is arranged in a spiral shape on the outer periphery of the scraping blade (332).

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