Laminated variable-speed filtering device

Abstract

The invention discloses a laminated variable-speed filtering device, which solves the technical problem of poor filtering efficiency. The device comprises a filtering tank which is vertically arranged; the water inlet pipe is connected to the top of the filtering tank; the drainage pipe is connected to the bottom of the filtering tank; the filtering sieve plate is horizontally fixed in the filtering tank; the filtering tank is filled with the filtering filler, and the filtering filler is positioned above the filtering sieve plate; the plurality of blocking rings are respectively fixed on the inner wall of the filtering tank, and the plurality of blocking rings are coaxial and are arranged at equal intervals along the vertical direction. The problem that the filtering efficiency is reduced due to the side wall effect can be solved, and the filtering effect can be guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of filter devices, and in particular relates to a laminated variable speed filter device. Background Art

[0002] Mechanical filters are devices used to remove suspended particulate matter from wastewater. They physically intercept and filter out larger particles, such as silt, rust, and other impurities, to purify the water. Mechanical filters are often used as a pre-treatment step in wastewater treatment systems to protect subsequent treatment equipment from damage caused by large particles and improve wastewater treatment efficiency.

[0003] The mechanical filter in the related technology has a side wall effect, which leads to a decrease in filtration efficiency. The reason for the side wall effect is that since the porosity of the filter material at the wall is large and the wall surface is smooth, the filtration resistance is small. During the downward flow of sewage, it gradually tends to the tank wall and directly penetrates the filter bed wall along the wall. The generation of wall flow is not conducive to the full contact between the filter material and sewage, thereby reducing the filtration efficiency, which needs to be improved. Summary of the Invention

[0004] In order to solve all or part of the above problems, the purpose of the present invention is to provide a laminated variable speed filtering device, which can improve the problem of reduced filtering efficiency due to the side wall effect and ensure the filtering effect.

[0005] The present invention provides a laminated variable speed filtering device, comprising:

[0006] The filter tank is arranged vertically;

[0007] a water inlet pipe connected to the top of the filter tank;

[0008] a drain pipe connected to the bottom of the filter tank;

[0009] A filter screen plate is fixed horizontally in the filter tank;

[0010] A filter filler is filled in the filter tank and is located above the filter screen plate;

[0011] There are multiple blocking rings, which are fixed on the inner wall of the filter tank respectively. The multiple blocking rings are coaxial and arranged at equal intervals in the vertical direction.

[0012] Optionally, the upper surface of each blocking ring is respectively provided with a first guide slope, so that the sewage flowing along the tank wall of the filter tank can flow toward the center position of the filter tank under the guiding effect of the first guide slope.

[0013] Optionally, the included angle between each of the first guiding slopes and the horizontal direction is 25-45°.

[0014] Optionally, the inclination angles of the plurality of first guiding slopes are the same, not completely the same, or different.

[0015] Optionally, a second guide slope is provided on the lower surface of each blocking ring, so that the sewage flowing through the first guide slope can flow toward the tank wall of the filter tank under the guidance of the second guide slope.

[0016] Optionally, the included angle between each of the second guide slopes and the horizontal direction is 25-45°.

[0017] Optionally, the inclination angles of the plurality of second guide slopes are the same, not completely the same, or different.

[0018] Optionally, the inclination angles of the first guiding inclined surface and the second guiding inclined surface located on the same blocking ring are the same or different.

[0019] Optionally, the drain pipe can be used as a backwash pipe to enable the filter packing to be cleaned.

[0020] Optionally, a water storage cavity is formed between the lower surface of the filter screen plate and the bottom inner wall of the filter tank.

[0021] As can be seen from the above technical solution, the laminated variable speed filter device provided by the present invention has the following advantages:

[0022] The device can improve the problem of reduced filtration efficiency due to the side wall effect, and at the same time prolong the residence time of sewage in the filter tank, thereby increasing the contact opportunity between sewage and filter filler to ensure the filtration effect.

[0023] Other features and advantages of the present invention will be set forth in the description that follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings are used to provide a further understanding of the technical solution of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the technical solution of the present invention and do not constitute a limitation to the technical solution of the present invention.

[0025] Figure 1 Schematic diagram of the overall structure of an embodiment of the present invention;

[0026] Figure 2 This is a schematic structural diagram of a filter tank in an embodiment of the present invention, mainly showing the design of the blocking ring;

[0027] Figure 3 This is a schematic structural diagram of a filter tank in an embodiment of the present invention, mainly showing the design of the blocking ring;

[0028] Figure 4This is a schematic structural diagram of a filter tank in an embodiment of the present invention, mainly showing the design of the blocking ring;

[0029] Figure 5 This is a schematic structural diagram of a filter tank in an embodiment of the present invention, mainly showing the design of the blocking ring;

[0030] Figure 6 This is a schematic structural diagram of a filter tank in an embodiment of the present invention, mainly showing the design of the blocking ring;

[0031] Figure 7 This is a schematic structural diagram of a filter tank in an embodiment of the present invention, mainly showing the design of the blocking ring;

[0032] Figure 8 This is a schematic diagram of the state of backwashing in an embodiment of the present invention.

[0033] Description of reference numerals:

[0034] 1. Filter tank; 2. Water inlet pipe; 3. Drain pipe; 4. Filter screen plate; 5. Water storage chamber; 6. Filter filler; 7. Blocking ring; 8. First guide slope; 9. Second guide slope. DETAILED DESCRIPTION

[0035] To make the purpose, technical solutions and advantages of the present invention more clearly understood, the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that, in the absence of conflict, the embodiments of the present invention and the features therein can be combined with each other in any manner.

[0036] like Figures 1-8 The figure shows an embodiment of the present invention, which discloses a laminated variable-speed filter device comprising a vertically arranged filter tank 1, with a water inlet pipe 2 fixedly connected to the top and a drain pipe 3 fixedly connected to the bottom. A filter screen plate 4 is horizontally arranged within the filter tank 1, with its edges fixedly connected to the inner wall of the filter tank 1. A gap exists between the lower surface of the filter screen plate 4 and the bottom inner wall of the filter tank 1, forming a water storage chamber 5. After filtration, sewage enters the water storage chamber 5 and is then discharged smoothly through the drain pipe 3.

[0037] In one embodiment, Figure 1 As shown, the filter tank 1 is filled with filter filler 6, which is filled above the filter screen plate 4, and there is a certain distance between the filter filler 6 and the top inner wall of the filter tank 1. At the same time, multiple blocking rings 7 are coaxially arranged in the filter tank 1. The edges of the multiple blocking rings 7 are respectively fixedly connected to the inner wall of the filter tank 1, and the multiple blocking rings 7 are arranged at equal intervals in the vertical direction.

[0038] In one embodiment, Figure 2-Figure 7As shown, the upper surface of each blocking ring 7 is integrally formed with a first guide slope 8, so that the sewage flowing along the tank wall of the filter tank 1 can flow toward the center of the filter tank 1 under the guidance of the first guide slope 8. At the same time, the lower surface of each blocking ring 7 is integrally formed with a second guide slope 9, so that the sewage flowing through the first guide slope 8 can flow toward the tank wall of the filter tank 1 under the guidance of the second guide slope 9.

[0039] In this embodiment, the laminated variable-speed filter device, comprising filter packing 6 and multiple barrier rings 7, forms a laminated dumbbell-shaped filter bed structure. This structure continuously alters the direction and velocity of the wall flow between the filter bed structure and the tank wall of the filter tank 1, extending the migration path and duration of contaminants in the wall flow within the filter bed structure. This increases the chances of contact and adhesion between the contaminants and the filter packing 6, ensuring effective filtration. Furthermore, the filter bed structure generates turbulent flow during wastewater filtration, further enhancing contact and adhesion between the contaminants and the filter packing 6, further ensuring effective filtration.

[0040] In one embodiment, Figure 2-Figure 7 As shown, the angles between each first guide bevel 8 and the second guide bevel 9 and the horizontal direction are 25-45° respectively, the inclination angles of multiple first guide bevels 8 are the same, not completely the same or different, and the inclination angles of multiple second guide bevels 9 are the same, not completely the same or different. At the same time, the inclination angles of the first guide bevel 8 and the second guide bevel 9 located on the same blocking ring 7 are the same or different.

[0041] This embodiment shows the states of four blocking rings 7. The specific configuration types of the four blocking rings 7 are as follows:

[0042] (1) Figure 2 As shown, the inclination angles of the four first guide slopes 8 are the same, the inclination angles of the four second guide slopes 9 are the same, and the inclination angles of the first guide slopes 8 and the second guide slopes 9 on the same blocking ring 7 are the same;

[0043] (2) Figure 3 As shown, the inclination angles of the four first guide slopes 8 are the same, the inclination angles of the four second guide slopes 9 are the same, and the inclination angles of the first guide slopes 8 and the second guide slopes 9 on the same blocking ring 7 are different;

[0044] (3) Figure 4 As shown, the inclination angles of the four first guide slopes 8 are different, and the inclination angles of the four second guide slopes 9 are the same;

[0045] (4) Figure 5 As shown, the inclination angles of the four first guide slopes 8 are the same, and the inclination angles of the four second guide slopes 9 are different;

[0046] (5) Figure 6 As shown, the inclination angles of the four first guide slopes 8 are different, the inclination angles of the four second guide slopes 9 are different, and the inclination angles of the first guide slopes 8 and the second guide slopes 9 on the same blocking ring 7 are the same or different. Figure 6 Only the same status is shown in

[0047] (6) Figure 7 As shown, among the four blocking rings, the first guiding slope and the second guiding slope on some blocking rings have the same inclination angle, and the first guiding slope and the second guiding slope on the remaining blocking rings may have the same or different inclination angles.

[0048] The filter packing 6 and multiple barrier rings 7 form a laminated dumbbell-shaped filter bed structure. This causes the wall flow between the filter bed structure and the tank wall to continuously shift in direction and velocity, creating a variable-speed filtration effect. This promotes the migration of pollutants deeper into the filter bed structure, increases contact between pollutants and the filter packing 6, and creates conditions for adhesion between pollutants and the filter media. Furthermore, the bottom portion of the filter packing 6 is fully utilized to increase the pollutant-holding capacity of the filter bed structure and the efficiency of pollutant retention by the filter media, effectively resolving the problem of reduced filtration efficiency in traditional filters due to the sidewall effect.

[0049] At the same time, the laminated dumbbell-shaped filter bed structure has the characteristics of gradual contraction and expansion of the laminate. When the filtered sewage passes through the gradually contracting and expanding space of the laminate, the flow rate will inevitably change alternately, increasing the turbulence of the filtered sewage, thereby constructing a variable speed filtration effect, further promoting the migration and adhesion of pollutants to the deep part of the filter bed structure.

[0050] In one embodiment, Figure 1 、 Figure 8 As shown, the drain pipe 3 can be used as a backwash pipe to clean the filter packing 6. The filter packing 6 and the plurality of baffle rings 7 form a laminated dumbbell-shaped filter bed structure, which can form a multi-stage laminated tapered expansion structure. When the filter packing 6 is backwashed, this multi-stage laminated tapered expansion structure design can produce a pulse effect in the backwash inefficient area near the wall surface, which has the effect of strengthening the turbulence near the wall surface, thereby effectively improving the backwash efficiency.

[0051] During the sewage filtration process of the laminated variable speed filter device in this embodiment, the sewage enters the filter bed structure, and the wall flow formed by the sewage flowing down from the filter bed structure and the tank wall enters the deep part of the filter bed structure along the first guide slope 8. The pollutants in the wall flow migrate to the deep part of the filter bed structure and contact and adhere to the filter filler 6 in the deep part of the filter bed structure. The other sewage enters the filter bed structure normally along the filter tank 1 for filtration.

[0052] Subsequently, the sewage flowing down the first guide slope 8 is mixed with the adjacent sewage, which is then guided by the second guide slope 9. The inclined path of the second guide slope 9 prolongs the migration path of the pollutants in the filter bed, increasing the chances of the pollutants being trapped by the filter media. This process is repeated to complete the entire sewage treatment process.

[0053] Compared with existing filters, since the flow direction and flow rate of the filtered sewage are constantly changing, the migration path and migration time of the pollutants in the filtered sewage in the filter bed can be fully extended. The extended migration path and migration time provide opportunities for the pollutants in the filtered sewage to fully contact the filter filler 6 in the filter bed, creating conditions for the adhesion of pollutants to the filter material, thereby effectively solving the problem of reduced filtration efficiency of traditional filters due to the existence of side wall effect.

[0054] It should be noted that, unless otherwise specified, the technical or scientific terms used in the present invention should have the common meanings understood by those skilled in the art to which the present invention belongs.

[0055] In addition, the terms "first," "second," etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. In the description of the present invention, "plurality" means more than two, unless otherwise specifically defined.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and description of the present invention. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A laminated variable speed filter device, characterized in that: include: The filter tank (1) is arranged vertically; A water inlet pipe (2) is connected to the top of the filter tank (1); A drainage pipe (3) connected to the bottom of the filter tank (1); A filter screen plate (4) is fixed horizontally in the filter tank (1); A filter filler (6) is filled in the filter tank (1) and is located above the filter screen plate (4); There are multiple blocking rings (7) which are respectively fixed on the inner wall of the filter tank (1). The multiple blocking rings (7) are coaxial and arranged at equal intervals in the vertical direction.

2. The laminated variable speed filter device according to claim 1, characterized in that: The upper surface of each blocking ring (7) is respectively provided with a first guiding inclined surface (8), so that sewage flowing along the tank wall of the filter tank (1) can flow toward the center position of the filter tank (1) under the guiding effect of the first guiding inclined surface (8).

3. The laminated variable speed filter device according to claim 2, characterized in that: The included angle between each of the first guiding slopes (8) and the horizontal direction is 25-45 degrees.

4. The laminated variable speed filter device according to claim 2, characterized in that: The inclination angles of the plurality of first guide inclined surfaces (8) are the same, not completely the same or different.

5. The laminated variable speed filter device according to claim 2, characterized in that: The lower surface of each blocking ring (7) is respectively provided with a second guide slope (9), so that sewage flowing through the first guide slope (8) can flow toward the tank wall of the filter tank (1) under the guidance of the second guide slope (9).

6. The laminated variable speed filter device according to claim 5, characterized in that: The included angle between each of the second guiding slopes (9) and the horizontal direction is 25-45 degrees.

7. The laminated variable speed filter device according to claim 5, characterized in that: The inclination angles of the plurality of second guide inclined surfaces (9) are the same, not completely the same or different.

8. The laminated variable speed filter device according to claim 5, characterized in that: The inclination angles of the first guiding inclined surface (8) and the second guiding inclined surface (9) located on the same blocking ring (7) are the same or different.

9. The laminated variable speed filter device according to claim 1, characterized in that: The drainage pipe (3) can be used as a backwash pipe to enable the filter filler (6) to be cleaned.

10. The laminated variable speed filter device according to claim 1, characterized in that: A water storage cavity (5) is formed between the lower surface of the filter screen plate (4) and the bottom inner wall of the filter tank (1).

Images