Multifunctional filter brick and filter tank for gas-water distribution

Abstract

The present invention discloses a multifunctional filter brick and filter tank for gas-water distribution, belonging to the field of water treatment technology. The multifunctional filter brick of the present invention comprises a brick body, wherein a first side plate, a second side plate and a partition plate are arranged inside the brick body, and the first side plate, the second side plate and the partition plate divide the inner cavity of the brick body into a primary water distribution cavity, a primary air distribution cavity and two secondary air-water distribution cavities; wherein the primary air distribution cavity is located above the primary water distribution cavity, the primary water distribution cavity and the primary air distribution cavity constitute a primary air-water distribution cavity, and the two secondary air-water distribution cavities are respectively located on both sides of the primary air-water distribution cavity. The present invention can well solve the problems existing in the existing S-type filter bricks, such as uneven water and air distribution, easy residual gas in the cavity, dead zones in water and air distribution and filtration and water collection, and inconvenience in installation and maintenance. Compared with traditional filter bricks, the present invention does not add too many complex structures, is relatively easy to implement, and has low production costs, and has certain practicality.

Description

Technical Field

[0001] The invention relates to the technical field of water treatment, in particular to a multifunctional filter brick and a filter tank for gas-water distribution. Background Art

[0002] In water treatment projects, filter tanks are a very common treatment process, and there are many types. Different types of filters are used for different treatment needs, such as aerated biological filters, V-type filters, and denitrification deep bed filters. In addition to normal filtration of water, the most critical process is the flushing process, which is related to the normal treatment effect and backwashing cycle of the filter tank. There are many ways of backwashing. The most common one is the combined air-water backwashing. One of the main components of the filter tank using this method is the water and air distribution system. The water distribution system can evenly collect the filtered water, and the water and air distribution systems can evenly distribute the backwashing water and air. It is also required to be easy to install and maintain, not easy to clog, and durable.

[0003] Commonly used water and gas distribution systems include filter heads and filter bricks. Common filter bricks include T-type and S-type filter bricks. Compared to filter heads, filter bricks can reduce filter tank depth and construction costs. They are also easier to install and require less time to install. The key feature of S-type filter bricks is their ability to achieve two-step water and gas distribution. However, existing S-type filter bricks still have some issues during use, such as uneven water and gas distribution, residual gas in the cavity, dead zones in water and gas distribution and filtration, and inconvenient installation and maintenance.

[0004] After searching, patent application number 202211684478.1, application date December 27, 2022, discloses a fixed air cavity S-type filter brick with multiple gas-water distribution; the application includes a filter brick shell, an internal partition is installed in the filter brick shell, the internal partition divides the filter brick shell into a primary water distribution chamber and a primary solid air cavity, the primary solid air cavity is located directly above the primary water distribution chamber, the primary water distribution chamber is an isosceles trapezoidal structure, the primary solid air cavity is a rectangular structure, and secondary steam-water distribution chambers are symmetrically arranged on both sides of the primary solid air cavity and the primary water distribution chamber, and a through hole is opened between the secondary steam-water distribution chamber and the primary water distribution chamber. The application changes the air cavity from the original variable volume form to a physical entity structure, fixes the air cavity volume, so that even if the backwash air increases under the premise of the filter bed resistance, it can still force each air hole to ensure uniform exhaust performance, avoiding the possibility that the area of ​​the filter bed with high resistance cannot be effectively backwashed after the gas is discharged from the area with less resistance. However, the application has the following problems: firstly, the structural design is relatively complex and the implementation cost is high; secondly, it is relatively inconvenient to install and maintain, and there are still problems with dead zones in water distribution, air distribution, and filtration and water collection. Summary of the Invention

[0005] 1. Technical problem to be solved by the invention

[0006] In response to the problems of existing S-type filter bricks, such as uneven water and gas distribution, residual gas in the cavity, dead zones in water and gas distribution and filtration and water collection, and inconvenience in installation and maintenance, the present invention provides a multifunctional filter brick and filter tank for gas-water distribution. The present invention can well solve the above problems and achieve good results in application.

[0007] 2. Technical solution

[0008] In order to achieve the above object, the technical solution provided by the present invention is:

[0009] The present invention provides a multifunctional filter brick for air-water distribution, comprising a brick body, wherein a first side plate, a second side plate and a partition plate are arranged inside the brick body, and the first side plate, the second side plate and the partition plate divide the inner cavity of the brick body into a primary water distribution cavity, a primary air distribution cavity and two secondary air-water distribution cavities; wherein the primary air distribution cavity is located above the primary water distribution cavity, the primary water distribution cavity and the primary air distribution cavity constitute a primary air-water distribution cavity, and the two secondary air-water distribution cavities are respectively located on both sides of the primary air-water distribution cavity.

[0010] Furthermore, the first side plate and the second side plate that cooperate with the partition plate to form a primary air distribution cavity are provided with a first air distribution channel and a second air distribution channel. The first air distribution channel is located above the second air distribution channel, and multiple first air distribution channels and second air distribution channels are arranged at intervals along the length direction of the brick body.

[0011] Furthermore, the first air distribution channel is a circular through hole, and the second air distribution channel is a strip-shaped slit.

[0012] Furthermore, the first side plate and the second side plate that cooperate with the partition plate to form a primary water distribution chamber are provided with a first water distribution channel and a second water distribution channel. The first water distribution channel is located above the second water distribution channel, and multiple first water distribution channels and second water distribution channels are arranged at intervals along the length direction of the brick body.

[0013] Furthermore, the first water distribution channel and the second water distribution channel are both circular through holes, and the aperture of the first water distribution channel is smaller than that of the second water distribution channel.

[0014] Furthermore, the first side plate, the second side plate and the partition plate form an A-type partition assembly that is wide at the bottom and narrow at the top; an end plug is provided at one end of the A-type partition assembly and an end socket is provided at the other end, and the end plug is inserted into the end socket to realize the assembly of the A-type partition assembly of adjacent filter bricks.

[0015] Furthermore, a fixing frame and a filter cap are provided on the top of the brick body, and a plurality of fixing frames are provided at intervals along the length direction of the brick body; the filter caps are provided in rows, and a plurality of rows are provided at intervals along the length direction of the brick body.

[0016] Furthermore, the side walls of the brick body are provided with side flow holes, and a plurality of side flow holes are arranged at intervals along the length direction of the brick body; 2-4 fixing seats are provided below the side flow holes, and the fixing seats cooperate with the anchoring pieces to fix the filter brick.

[0017] The filter tank of the present invention comprises a tank body and the filter bricks. The filter bricks are laid on the bottom of the tank body, and a filling medium is filled between adjacent filter bricks.

[0018] 3. Beneficial effects

[0019] Compared with the existing known technologies, the technical solution provided by the present invention has the following significant effects:

[0020] (1) The multifunctional filter brick for gas-water distribution of the present invention uses a partition plate to divide the primary gas-water distribution chamber into two small chambers, the upper layer is the primary gas distribution chamber, and the lower layer is the primary water distribution chamber. When the gas and water in the filter tank are backwashed together, the fluctuation and unevenness of the gas-water interface, which cause uneven gas and water distribution, can be avoided. After adding the partition plate, the primary gas-water distribution chamber is adjusted from the conventional figure eight shape to the A shape, thereby strengthening the internal structure, enhancing the strength of the chamber, and improving the stability of the filter brick.

[0021] (2) Conventional filter bricks use circular holes for air outlet. The present invention changes the circular holes into narrow and long slits to enhance the gas-water mixing and stirring effect in the secondary water and gas distribution cavity. At the same time, the present invention reserves a row of circular holes on the top of the primary gas distribution cavity to facilitate the discharge of residual gas in the cavity.

[0022] (3) The multifunctional filter brick for gas-water distribution of the present invention has a fixing seat provided on the side wall of the brick body. The filter brick is anchored to the pool bottom by the cooperation of the anchor piece and the fixing seat. There is no need to fill the space between the filter bricks with concrete, but gravel can be used for filling, thereby shortening the construction period. In addition, since concrete is not filled, it is easier to remove the filter bricks during the later maintenance or transformation of the filter tank. Moreover, since concrete is not needed, the present invention provides flow holes (i.e., side flow holes) on both side walls of the brick body. During backwashing, the side flow holes can balance the air pressure inside the secondary water and air distribution cavity to ensure uniform air distribution. During filtration, water in the gap between the two filter bricks can also be collected, and there is no dead zone for water collection.

[0023] (4) The present invention changes the location of the water and air distribution holes on the top of the filter brick to the installation of a tower-type grating filter cap, which is conducive to radiating water and air distribution to the surrounding areas, so as to cover the gap areas between the filter bricks; at the same time, the present invention arranges a plurality of fixing frames at intervals along the length direction of the brick body, and the fixing frames can cooperate with the tower-type grating filter cap to support the support plate, so that the support plate is no longer limited by the limited installation space on the top of the traditional filter brick, and is connected with other support plates. There is no gap area, and there is no dead zone in water distribution, air distribution, and filtration and water collection; the tower-type grating filter cap on the top plate of the filter brick is screwed to the filter brick body by threads, and different grating gap sizes can be used according to the size of the filter medium required by different filter tanks, and it is suitable for various types of filter tanks.

[0024] (5) The multifunctional filter brick for air-water distribution of the present invention not only has socket plugs and sockets at both ends of the brick body to realize the socket-type rapid assembly of two adjacent brick bodies, but also has end plugs and end sockets at both ends of the A-type partition assembly in the inner cavity of the brick body to ensure that the filter brick can be reliably assembled from the inside to the outside, and the flatness of the brick body and the overall continuity of the primary air-water distribution cavity and the secondary air-water distribution cavity inside the brick body are reliably guaranteed.

[0025] (6) The multifunctional filter brick for gas-water distribution of the present invention does not add a significantly complex structure compared to traditional filter bricks, is relatively easy to implement, has a low production cost, and has certain practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 Schematic diagram of the three-dimensional structure of the multifunctional filter brick of the present invention;

[0027] Figure 2 It is a side view of the multifunctional filter brick of the present invention;

[0028] Figure 3 A top view of the multifunctional filter brick of the present invention;

[0029] Figure 4 Schematic diagram of the three-dimensional structure of the A-type partition plate in the present invention;

[0030] Figure 5 This is a schematic diagram of the structure of the partition plate end plug in the present invention;

[0031] Figure 6 This is a schematic diagram of the structure of the socket at the end of the partition plate in the present invention;

[0032] Figure 7 This is a schematic diagram of the structure of the socket assembly between the filter bricks in the present invention;

[0033] Figure 8 This is an end view of the filter brick pool bottom paving in the present invention.

[0034] Explanation of the numbers in the schematic diagram:

[0035] Ⅰ. Filter brick; Ⅱ. Filling medium; Ⅲ. Support plate; Ⅳ. Pool body;

[0036] 11. Brick body; 12. Socket plug; 13. Socket; 14. Reinforcement rib; 15. Side flow hole; 16. Fixing bracket; 17. Fixing seat; 171. Anchor; 18. Fixing hole; 19. Filter cap;

[0037] 21. First side panel; 22. Second side panel; 23. Partition panel; 24. First air distribution channel; 25. Second air distribution channel; 26. First water distribution channel; 27. Second water distribution channel; 28. Terminal plug; 29. ​​Terminal socket;

[0038] 31. Primary water distribution chamber; 32. Primary air distribution chamber; 33. Secondary air-water distribution chamber. DETAILED DESCRIPTION

[0039] In order to further understand the content of the present invention, the present invention is described in detail with reference to the accompanying drawings and embodiments.

[0040] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0041] The present invention will be further described below with reference to the embodiments.

[0042] Example 1

[0043] Combine Figure 1 and Figure 4 This embodiment of a multifunctional filter brick for gas-water distribution includes a brick body 11 with a socket 12 at one end and a socket 13 at the other. The socket 12 and socket 13 cooperate to enable rapid splicing of two adjacent brick bodies 11. Multiple reinforcing ribs 14 are provided on both side walls of the brick body 11 to enhance the strength of the entire brick body 11. Furthermore, when the filter brick I is laid on the pool bottom, this enhances the interlocking force between the filter brick I and the filler medium II, ensuring stability across the entire pool bottom.

[0044] A first side panel 21, a second side panel 22, and a partition panel 23 are provided within the brick body 11. These panels form an A-shaped partition assembly that is wider at the bottom and narrower at the top. These panels divide the interior of the brick body 11 into a primary water distribution chamber 31, a primary air distribution chamber 32, and two secondary air-water distribution chambers 33. The primary air distribution chamber 32 is located above the primary water distribution chamber 31, and the two secondary air-water distribution chambers 33 are located on either side of the primary air-water distribution chamber.

[0045] The present embodiment is a multifunctional filter brick for gas-water distribution. Although some existing filter bricks have two water and gas distributions, the first water and gas distribution is particularly critical. If the first water and gas distribution is uneven, it is difficult to readjust the second water and gas distribution to make it uniform. In order to strengthen the first water and gas distribution, the present embodiment divides the primary gas-water distribution chamber into two small chambers, the upper layer is the primary gas distribution chamber 32, and the lower layer is the primary water distribution chamber 31. In this way, when the filter tank is backwashed and the air is taken in, it is conducive to forming a stable air cushion layer, which can avoid the difference in flatness of the entire filter brick caused by installation, resulting in the problem of unstable air cushion layer and inconsistent thickness. At the same time, when the filter tank is backwashed with air, the fluctuation and unevenness of the gas-water interface are avoided, which causes uneven water and gas distribution. After adding the partition plate 23, the primary gas-water distribution chamber is adjusted from the conventional figure eight shape to the A shape, which strengthens the internal structure, enhances the strength of the cavity, and improves the stability of the filter brick.

[0046] Example 2

[0047] Combine Figure 4 This embodiment is a multifunctional filter brick for air-water distribution, which is substantially the same as that of the first embodiment, except that: this embodiment further defines a first air distribution channel 24 and a second air distribution channel 25 on the first side plate 21 and the second side plate 22, which cooperate with the partition plate 23 to enclose the primary air distribution chamber 32. The first air distribution channel 24 is located above the second air distribution channel 25. Multiple first air distribution channels 24 and second air distribution channels 25 are provided at intervals along the length of the brick body 11. The first air distribution channel 24 is a circular through hole, and the second air distribution channel 25 is a vertical strip-shaped slit.

[0048] A first water distribution channel 26 and a second water distribution channel 27 are formed on the first side plate 21 and the second side plate 22, which cooperate with the partition plate 23 to enclose the primary water distribution chamber 31. The first water distribution channel 26 is located above the second water distribution channel 27. Multiple first water distribution channels 26 and second water distribution channels 27 are provided at intervals along the length of the brick body 11. Both the first water distribution channels 26 and the second water distribution channels 27 are circular through holes, and the aperture of the first water distribution channel 26 is smaller than that of the second water distribution channel 27.

[0049] In the primary air distribution chamber, conventional filter bricks use circular holes for air outlet. In this embodiment, the circular holes are replaced with narrow vertical slits, which can enhance the gas-water mixing and stirring effect in the secondary gas-water distribution chamber 33. At the same time, this embodiment reserves a row of circular holes at the top of the primary air distribution chamber 32 to facilitate the discharge of residual gas in the chamber.

[0050] Example 3

[0051] Combine Figure 5 and Figure 6 The multifunctional filter brick for gas-water distribution of this embodiment is basically the same as that of embodiment 2, except that: this embodiment not only has socket plugs and socket openings at both ends of the brick body to realize the socket-and-spigot type rapid assembly of two adjacent brick bodies, but also has an end plug 28 at one end of the A-type partition assembly and an end socket 29 at the other end. The end plug 28 is inserted into the end socket 29 to realize the assembly of the A-type partition assemblies of adjacent filter bricks, ensuring that the filter bricks are reliably assembled from the inside to the outside, and the flatness of the brick body and the overall continuity of the primary gas-water distribution cavity and the secondary gas-water distribution cavity inside the brick body are reliably guaranteed.

[0052] Example 4

[0053] Combine Figure 1 and Figure 2 The multifunctional filter brick for gas-water distribution of this embodiment is basically the same as that of embodiment 3, except that: the side wall of the brick body 11 is provided with side flow holes 15, and a plurality of side flow holes 15 are arranged at intervals along the length direction of the brick body 11; two fixing seats 17 are provided below the side flow holes 15, and the fixing seats 17 cooperate with anchors 171 to fix the filter brick, and the anchors 171 can be screws.

[0054] After the current filter bricks are fixed, there are still gaps between the filter bricks. The gaps need to be filled with concrete, which increases the construction difficulty and prolongs the installation period. In this embodiment, a fixing seat 17 is added to the side of the filter brick, which is integrally formed with the brick body 11 and anchored to the pool bottom through a screw. There is no need to fill the space between the filter bricks with concrete, and gravel can be used for filling, which shortens the construction period. In addition, since concrete is not filled, it is easier to remove the filter bricks during later inspection or modification of the filter tank.

[0055] Some existing filter bricks incorporate a return water trough above the figure-eight baffle in the primary air-water distribution chamber. This trough's perforations stabilize the airflow in the secondary air-water distribution chamber, resolving the problem of drag water backflow. This, however, increases the complexity of the internal cavity. Furthermore, the top panels of current filter bricks feature water and air distribution holes for backwashing and filtered water collection, but this still leaves gaps between the filter bricks. Sometimes, to reduce the height of the tank, a media support plate is added to the top panel of the filter bricks, replacing the gravel support layer. This creates problems with water and air distribution in the gaps between the filter bricks.

[0056] Since there are gaps between the filter bricks integrally formed with the fixing seat 17 in this embodiment, flow holes (i.e., side flow holes 15) are opened on both side walls of the brick body in this embodiment. During backwashing, they are used to balance the air pressure balance inside the secondary air-water distribution chamber 33 to ensure uniform air distribution; during filtering, water in the gap between the two filter bricks can also be collected, and there is no dead zone for water collection; the internal structure of the filter brick cavity is simpler than that of the return water trough type filter brick, which is convenient for production.

[0057] Example 5

[0058] Combine Figure 1 and Figure 3 The multifunctional filter brick for gas-water distribution of this embodiment is basically the same as that of embodiment 4, except that a fixing frame 16 and a filter cap 19 are provided on the top of the brick body 11, and a plurality of fixing frames 16 are arranged at intervals along the length direction of the brick body 11; the filter caps 19 are arranged in rows, and a plurality of rows are arranged at intervals along the length direction of the brick body 11.

[0059] In this embodiment, the water and air distribution holes on the top of the filter brick are replaced with a tower-type grid filter cap 19, which is conducive to radiating water and air distribution to the surrounding areas to cover the gap areas between the filter bricks. At the same time, in order to be able to install the medium support plate III in the future, in addition to the support plate III fixing frame 16 provided on the top of the filter brick, the tower-type grid filter cap can also support the support plate III. At the same time, the support plate III is no longer limited to the top of the filter brick and can be connected with other support plates. There is no gap area, and there is no dead zone in water and air distribution and filtration and water collection.

[0060] In order to adapt to various filtration processes, the tower-type grid filter cap on the top plate of the filter brick is screwed to the fixing hole 18 on the top of the brick body 11 with threads. Different grid gap sizes can be used according to the size of the filter medium required by different filter tanks, and it is suitable for various types of filter tanks.

[0061] Example 6

[0062] Combine Figure 7 and Figure 8 A filter tank according to this embodiment includes a tank body IV and filter bricks I described in any one of Examples 1-4. The filter bricks I are laid on the bottom of the tank body IV. Adjacent filter bricks I are assembled by coupling a socket 12 with a socket 13 to achieve quick spigot-type assembly. They are anchored to the tank bottom by coupling a fixing seat 17 with an anchor 171. Filling medium II is filled between adjacent filter bricks I. Gravel can be used instead of concrete. The tops of the filter bricks I are supported by a fixing frame 16 and mounted with a support plate III.

[0063] The above is a schematic description of the present invention and its embodiments, which is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by this and, without departing from the purpose of the present invention, designs a structure and embodiment similar to this technical solution without inventiveness, they shall fall within the scope of protection of the present invention.

Claims

1. A multifunctional filter brick for gas-water distribution, comprising a brick body (11), characterized in that: A first side plate (21), a second side plate (22) and a partition plate (23) are provided inside the brick body (11). The first side plate (21), the second side plate (22) and the partition plate (23) divide the inner cavity of the brick body (11) into a primary water distribution cavity (31), a primary air distribution cavity (32) and two secondary air-water distribution cavities (33); wherein the primary air distribution cavity (32) is located above the primary water distribution cavity (31), the primary water distribution cavity (31) and the primary air distribution cavity (32) constitute a primary air-water distribution cavity, and the two secondary air-water distribution cavities (33) are respectively located on both sides of the primary air-water distribution cavity; A first air distribution channel (24) and a second air distribution channel (25) are provided on the first side plate (21) and the second side plate (22) that cooperate with the partition plate (23) to enclose a primary air distribution cavity (32). The first air distribution channel (24) is located above the second air distribution channel (25). A plurality of the first air distribution channels (24) and the second air distribution channels (25) are spaced apart along the length direction of the brick body (11). The first air distribution channel (24) is a circular through hole, and the second air distribution channel (25) is a strip-shaped slit; A first water distribution channel (26) and a second water distribution channel (27) are provided on the first side plate (21) and the second side plate (22) that cooperate with the partition plate (23) to enclose the primary water distribution chamber (31). The first water distribution channel (26) is located above the second water distribution channel (27). A plurality of the first water distribution channels (26) and the second water distribution channels (27) are spaced apart along the length direction of the brick body (11); The first water distribution channel (26) and the second water distribution channel (27) are both circular through holes, and the aperture of the first water distribution channel (26) is smaller than that of the second water distribution channel (27); The side wall of the brick body (11) is provided with side flow holes (15), and a plurality of side flow holes (15) are arranged at intervals along the length direction of the brick body (11).

2. The multifunctional filter brick for gas-water distribution according to claim 1, characterized in that: The first side plate (21), the second side plate (22) and the partition plate (23) form an A-type partition assembly that is wider at the bottom and narrower at the top. An end plug (28) is provided at one end of the A-type partition assembly, and an end socket (29) is provided at the other end. The end plug (28) is inserted into the end socket (29) to realize the assembly of the A-type partition assemblies of adjacent filter bricks.

3. The multifunctional filter brick for gas-water distribution according to claim 2, characterized in that: A fixing frame (16) and a filter cap (19) are arranged on the top of the brick body (11). A plurality of fixing frames (16) are arranged at intervals along the length direction of the brick body (11); and the filter caps (19) are arranged in rows, and a plurality of rows are arranged at intervals along the length direction of the brick body (11).

4. The multifunctional filter brick for gas-water distribution according to claim 3, characterized in that: The side wall of the brick body (11) is provided with 2-4 fixing seats (17), the fixing seats (17) are located below the side flow holes (15), and the fixing seats (17) cooperate with the anchoring pieces (171) to achieve the fixing of the filter brick.

5. A filter tank comprising a tank body (IV), characterized in that: It also includes the filter brick (I) as described in any one of claims 1 to 4, wherein the filter brick (I) is laid on the bottom of the pool body (IV), and the filling medium (II) is filled between adjacent filter bricks (I).

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