A disc filter with back-flushing water flow distribution channels and a wiper cleaning mechanism

Abstract

The utility model belongs to filter technical field, concretely relates to a disc filter with backflushing water flow distribution channel and scraper type cleaning mechanism, including the casing, the upper end opening in -side of casing is equipped with the shell cover through bolt mounting, the inside fixed connection of shell cover has the liquid inlet pipe, and the liquid inlet pipe is set, the inside middle part fixed connection of casing has the support ring, the upper end of support ring places the filter disc, and the filter disc is slidably connected in the inside of casing, be provided with scraper type cleaning mechanism on the shell cover. Through setting scraper type cleaning mechanism, utilize motor drive pivot to drive scraper to continuously rotate and scrape the filter residue on the filter disc surface, effectively prevent the static accumulation of bulky sundries and block the filter disc, simultaneously, the slide seat design of spring support makes scraper can self -adaptation adhere to the filter disc surface, guarantee the cleaning effect while avoiding the hard abrasion, has improved the filtration efficiency and filter disc service life remarkably.

Description

Technical Field

[0001] This solution belongs to the field of filters, specifically involving a disc filter with a backwash water flow distribution channel and a scraper cleaning mechanism. Background Technology

[0002] Disc filters, as a type of high-efficiency precision filtration equipment, are widely used in solid-liquid separation processes in industrial circulating water, deep wastewater treatment, food, and chemical industries.

[0003] A search revealed that in patent application CN105682765A, a disc filter is disclosed, comprising: stacked perforated filter discs arranged about an axis, the stack having an outer surface and an inner surface, and mounted such that individual discs are rotatable about the axis relative to adjacent discs during backwashing; and a disc cleaning assembly operable to rotate at least some discs about the axis relative to other discs, the disc cleaning assembly including...

[0004] However, existing disc filters have certain drawbacks in use: First, when processing liquids containing a large amount of viscous or fibrous impurities, these impurities easily and quickly cover and clog the pores on the filter disc surface. Furthermore, the static accumulation of these impurities leads to a sharp increase in filtration resistance and a decrease in filtration efficiency. Therefore, improvements are needed. Utility Model Content

[0005] The purpose of this solution is to provide a disc filter with a backwash water distribution channel and a scraper cleaning mechanism to solve the problem of existing disc filters being easily clogged.

[0006] To achieve the above objectives, this solution provides a disc filter with a backwash water flow distribution channel and a scraper-type cleaning mechanism, comprising a housing, a cover bolted to the inner side of the upper opening of the housing, an inlet pipe fixedly connected inside the cover and penetrating the cover, a support ring fixedly connected to the middle of the inner side of the housing, a filter disc placed at the upper end of the support ring and slidably connected to the inside of the housing, a scraper-type cleaning mechanism on the cover, a backwashing mechanism on the inner side of the housing, and a drain pipe connected to the bottom of the housing.

[0007] The principle of this solution is as follows: In use, firstly, the cover is bolted to the upper opening of the housing. At this time, the pressure ring at the bottom of the cover presses against the filter disc, and a sealing ring seals it against the inner wall of the housing, forming a closed filtration chamber. The liquid to be filtered enters through the inlet pipe. The liquid first impacts the guide shroud, and under its and the swirling strips' action, the liquid flow is rectified and evenly dispersed, then passes downwards through the filter disc for filtration. Simultaneously, the motor is started, driving the rotating shaft to rotate. The rotating shaft, through the fixed rod, drives the guide shroud to rotate, simultaneously rotating the lower support, fixed housing, and scraper. Under the continuous pressure of the spring, the scraper tightly adheres to the filter disc. The combined scraping of the upper surface of the filter disc effectively prevents large-volume debris from accumulating and clogging the filter disc. When deep cleaning is required, the liquid inlet can be stopped, and the connecting pipe is connected to an external flushing water pump. The external flushing water pump pumps the flushing liquid into the ring pipe through the connecting pipe. The flushing liquid is then sprayed out at high speed from multiple nozzles arranged at an angle inside the ring pipe. Because the nozzles are angled, the sprayed water can impact the bottom of the filter disc, thoroughly and completely flushing the pores of the filter disc and removing fine particles embedded deep in the pores. The waste liquid generated by backwashing, along with the scraped-off impurities, is suspended at the bottom of the chamber and finally discharged through the drain pipe, completing the cleaning process.

[0008] The technical advantages of this solution are as follows: by setting up a scraper-type cleaning mechanism, the electric motor drives the rotating shaft to continuously rotate the scraper to remove filter residue from the surface of the filter disc, effectively preventing large-volume debris from accumulating statically and clogging the filter disc. At the same time, the spring-supported sliding seat design allows the scraper to adaptively conform to the surface of the filter disc, ensuring the cleaning effect while avoiding hard wear, significantly improving filtration efficiency and filter disc lifespan.

[0009] By installing a backwashing mechanism below the filter disc, the backwashing mechanism generates a high-pressure water flow through inclined nozzles arranged in a ring pipe to efficiently backwash and clean the filter disc. Combined with scraper cleaning, this forms a dual maintenance system, ensuring the long-term stable operation of the filter.

[0010] Furthermore, the bottom of the filter disc is fixedly connected with multiple positioning pins, which pass through the support ring and are inserted into it. The positioning pins prevent the filter disc from rotating on its own.

[0011] Furthermore, a pressure ring is fixedly connected to the bottom of the shell cover. The pressure ring is slidably connected inside the shell, and the bottom of the pressure ring abuts against the filter disc. The pressure ring serves to vertically limit the position of the filter disc.

[0012] Furthermore, multiple sealing rings are embedded in the outer wall of the pressure ring, and these sealing rings abut against the inner wall of the housing. The sealing rings enhance the sealing performance between the pressure ring and the housing.

[0013] Furthermore, a support base is fixedly connected to the lower outer side of the housing, and multiple support legs are fixedly connected to the bottom of the support base. The support base and support legs provide support for the housing.

[0014] Furthermore, the scraper-type cleaning mechanism includes a motor fixedly installed in the middle of the upper part of the housing cover. The output shaft of the motor passes through the housing cover and is connected to the housing cover via a bearing. A rotating shaft is fixedly connected to the end of the output shaft. Two fixed rods are fixedly connected to the middle section of the rotating shaft. A guide shroud is fixedly connected to the ends of the two fixed rods. The narrow opening of the guide shroud faces downward. Multiple swirling strips are fixedly connected to the inner wall of the guide shroud. The position of the guide shroud corresponds to the position of the liquid inlet pipe. A bracket is fixedly connected to the lower section of the rotating shaft. A fixed shell is fixedly connected to the end of the bracket. A slide block is slidably connected inside the fixed shell. The slide block penetrates the fixed shell. A scraper is fixedly connected to the bottom of the slide block and contacts the filter disc. A spring is installed inside the fixed shell. One end of the spring is fixedly connected to the slide block, and the other end of the spring is fixedly connected to the inner surface of the fixed shell. The scraper-type cleaning mechanism effectively pushes and cleans large-volume debris filtered by the filter disc, preventing static accumulation that could clog the filter disc.

[0015] Furthermore, the backwashing mechanism includes a ring pipe located below the filter disc. Multiple nozzles are arranged on the inner wall of the ring pipe at an angle. A connecting pipe is connected to the outer wall of the ring pipe, penetrating the housing and extending to the outside of the housing. This backwashing mechanism effectively backwashes the filter disc. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model; Figure 2 This is an embodiment of the present utility model. Figure 1 A schematic diagram of a partial structure; Figure 3 This is an embodiment of the present utility model. Figure 1 A front sectional view; Figure 4 This is an embodiment of the present utility model. Figure 3 Enlarged view of point A.

[0017] The following detailed explanation illustrates the specific implementation methods: The reference numerals in the accompanying drawings include: housing 1, housing cover 2, pressure ring 21, sealing ring 22, liquid inlet pipe 3, support ring 4, filter plate 5, positioning pin 6, scraper-type cleaning mechanism 7, motor 71, rotating shaft 72, fixing rod 73, flow guide 74, swirl strip 75, bracket 76, fixed shell 77, slide 78, scraper 79, spring 710, backwashing mechanism 8, ring pipe 81, nozzle 82, connecting pipe 83, drain pipe 9, support base 10, support leg 11. Detailed Implementation

[0018] The basic implementation examples are as follows: Figures 1-4 The diagram shows a disc filter with a backwash water distribution channel and a scraper-type cleaning mechanism. It includes a housing 1. A cover 2 is bolted to the inner side of the upper opening of the housing 1. A pressure ring 21 is fixedly connected to the bottom of the cover 2, and the pressure ring 21 is slidably connected to the inside of the housing 1. The bottom of the pressure ring 21 abuts against the filter disc 5. The pressure ring 21 provides vertical positioning for the filter disc 5. Multiple sealing rings 22 are embedded in the outer wall of the pressure ring 21, and these sealing rings 22 abut against the inner wall of the housing 1. The sealing rings 22 increase the sealing between the pressure ring 21 and the housing 1. A liquid inlet pipe 3 is fixedly connected to the inside of the cover 2, and the liquid inlet pipe 3 penetrates the cover 2. A support ring 4 is fixedly connected to the middle of the inner side of the housing 1. The filter disc 5 is placed on the upper end of the support ring 4 and is slidably connected to the inside of the housing 1. Multiple positioning pins 6 are fixedly connected to the bottom of the filter disc 5, and the positioning pins 6 penetrate the support ring 4 and are inserted into it. The positioning pin 6 prevents the filter disc 5 from rotating. A drain pipe 9 is connected to the bottom of the housing 1. A support base 10 is fixedly connected to the lower outer side of the housing 1, and multiple support legs 11 are fixedly connected to the bottom of the support base 10. The support base 10 and the support legs 11 provide support for the housing 1.

[0019] like Figure 2 , 3 , Figure 4As shown, a scraper-type cleaning mechanism 7 is provided on the cover 2. This mechanism pushes and cleans large debris filtered by the filter disc 5, preventing static accumulation and clogging. The scraper-type cleaning mechanism 7 includes a motor 71 fixedly installed in the middle of the upper part of the cover 2. The output shaft of the motor 71 passes through the cover 2 and is connected to it via a bearing. A rotating shaft 72 is fixedly connected to the end of the output shaft. Two fixing rods 73 are fixedly connected to the middle section of the rotating shaft 72. A guide shroud 74 is fixedly connected to the ends of the two fixing rods 73. The narrow opening of the guide shroud 74 faces downwards. Multiple swirl bars 75 are fixedly connected to the inner ring wall of the flow guide 74. The position of the flow guide 74 corresponds to the position of the liquid inlet pipe 3. A bracket 76 is fixedly connected to the lower section of the shaft of the rotating shaft 72. A fixed shell 77 is fixedly connected to the end of the bracket 76. A slide seat 78 is slidably connected inside the fixed shell 77. The slide seat 78 is set through the fixed shell 77. A scraper 79 is fixedly connected to the bottom of the slide seat 78. The scraper 79 contacts the filter disc 5. A spring 710 is set inside the fixed shell 77. One end of the spring 710 is fixedly connected to the slide seat 78, and the other end of the spring 710 is fixedly connected to the inner surface of the fixed shell 77.

[0020] like Figure 2 , 3 As shown, a backwashing mechanism 8 is provided on the inner side of the housing 1. The backwashing mechanism 8 has a backwashing effect on the filter disc 5. The backwashing mechanism 8 includes a ring pipe 81, which is located below the filter disc 5. Multiple nozzles 82 are provided on the inner wall of the ring pipe 81. The nozzles 82 are inclined. A connecting pipe 83 is provided on the outer wall of the ring pipe 81. The connecting pipe 83 passes through the housing 1 and extends to the outside of the housing 1.

[0021] The specific implementation process of this utility model is as follows: In use, firstly, the cover 2 is fastened to the upper opening of the housing 1 with bolts. At this time, the pressure ring 21 at the bottom of the cover 2 presses the filter plate 5, and the sealing ring 22 achieves a seal with the inner wall of the housing 1, forming a closed filtration chamber. The liquid to be filtered enters from the liquid inlet pipe 3. The liquid first impacts the guide shroud 74. Under the action of the guide shroud 74 and the swirl bar 75, the liquid flow is rectified and evenly dispersed, and then passes downward through the filter plate 5 for filtration. At the same time, the motor 71 is started. The motor 71 drives the rotating shaft 72 to rotate. The rotating shaft 72 drives the guide shroud 74 to rotate through the fixing rod 73. At the same time, it drives the lower bracket 76, the fixed housing 77 and the scraper 79 to rotate together. The scraper 79 is spring-loaded. Under the continuous pressure of 710, the filter disc 5 is closely adhered to and scraped, effectively preventing large-volume debris from accumulating and clogging the filter disc 5. When deep cleaning is required, the liquid inlet can be stopped, and the connecting pipe 83 is connected to an external flushing water pump. The external flushing water pump pumps the flushing liquid into the ring pipe 81 through the connecting pipe 83. The flushing liquid is then sprayed out at high speed from multiple nozzles 82 arranged at an angle inside the ring pipe 81. Since the nozzles 82 are angled, the sprayed water can impact the bottom of the filter disc 5, thoroughly and without dead angles flushing the pores of the filter disc 5, removing fine particles embedded deep in the pores. The waste liquid generated by backwashing and the scraped impurities are suspended at the bottom of the chamber and finally discharged through the drain pipe 9, completing the cleaning.

[0022] This solution uses a scraper-type cleaning mechanism 7, which uses a motor 71 to drive a rotating shaft 72 to rotate a scraper 79 to continuously scrape off filter residue from the surface of the filter disc 5. This effectively prevents large-volume debris from accumulating statically and clogging the filter disc 5. At the same time, the design of the slide seat 78 supported by the spring 710 allows the scraper 79 to adaptively conform to the surface of the filter disc 5, ensuring cleaning effect while avoiding hard wear, and significantly improving filtration efficiency and the service life of the filter disc 5.

[0023] By setting a backwashing mechanism 8 below the filter disc 5, the backwashing mechanism 8 forms a high-pressure water flow through the inclined nozzles 82 arranged in the ring pipe 81 to efficiently backwash and clean the filter disc 5. Combined with scraper cleaning, it forms a dual maintenance to ensure the long-term stable operation of the filter.

[0024] The above descriptions are merely embodiments of this utility model, and common knowledge regarding specific structures and characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A disc filter with a backwash water flow distribution channel and a scraper-type cleaning mechanism, comprising a housing, characterized in that: A cover is bolted to the inside of the upper opening of the housing. An inlet pipe is fixedly connected inside the cover and penetrates the cover. A support ring is fixedly connected to the middle of the inner side of the housing. A filter disc is placed on the upper end of the support ring and is slidably connected to the inside of the housing. A scraper-type cleaning mechanism is provided on the cover. A backwashing mechanism is provided inside the housing. A drain pipe is connected to the bottom of the housing.

2. A disc filter with a backwash water flow distribution channel and a scraper-type cleaning mechanism according to claim 1, characterized in that: The bottom of the filter disc is fixedly connected with multiple positioning pins, which pass through the support ring and are inserted into the support ring.

3. A disc filter with a backwash water flow distribution channel and a scraper-type cleaning mechanism according to claim 1, characterized in that: A pressure ring is fixedly connected to the bottom of the shell cover. The pressure ring is slidably connected to the inside of the shell, and the bottom of the pressure ring abuts against the filter disc.

4. A disc filter with a backwash water flow distribution channel and a scraper-type cleaning mechanism according to claim 3, characterized in that: Multiple sealing rings are embedded in the outer ring wall of the pressure ring, and the sealing rings abut against the inner wall of the housing.

5. A disc filter with a backwash water flow distribution channel and a scraper-type cleaning mechanism according to claim 1, characterized in that: A support base is fixedly connected to the lower outer side of the housing, and multiple support legs are fixedly connected to the bottom of the support base.

6. A disc filter with a backwash water flow distribution channel and a scraper-type cleaning mechanism according to claim 1, characterized in that: The scraper-type cleaning mechanism includes a motor fixedly installed in the middle of the upper part of the shell cover. The output shaft of the motor passes through the shell cover and is connected to the shell cover via a bearing. A rotating shaft is fixedly connected to the end of the output shaft. Two fixed rods are fixedly connected to the middle section of the rotating shaft. A flow guide is fixedly connected to the end of the two fixed rods. The narrow opening of the flow guide faces downward. Multiple swirl strips are fixedly connected to the inner wall of the flow guide. The position of the flow guide corresponds to the position of the liquid inlet pipe. A bracket is fixedly connected to the lower section of the rotating shaft. A fixed shell is fixedly connected to the end of the bracket. A slide is slidably connected inside the fixed shell. The slide penetrates the fixed shell. A scraper is fixedly connected to the bottom of the slide. The scraper contacts the filter disc. A spring is installed inside the fixed shell. One end of the spring is fixedly connected to the slide, and the other end of the spring is fixedly connected to the inner surface of the fixed shell.

7. A disc filter with a backwash water flow distribution channel and a scraper-type cleaning mechanism according to claim 1, characterized in that: The backwashing mechanism includes a ring pipe located below the filter disc. The inner wall of the ring pipe is provided with multiple nozzles, which are inclined. The outer wall of the ring pipe is connected to a connecting pipe that penetrates the housing and extends to the outside of the housing.

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