Filtering device

Abstract

The embodiment of the utility model provides a filtering device which is arranged in a filtering tank, the water inlet end of the filtering tank is communicated with a pretreatment tank, and the water outlet end of the filtering tank is communicated with a post-filtering tank; the pretreatment tank is used for storing sewage; the filtering device comprises a plurality of filtering units, and the filtering units are arranged along the direction from the pretreatment tank to the post-filtering tank; the filter unit comprises a first filter screen and a second filter screen, the first filter screen is detachably arranged in the filter tank, and sewage in the pretreatment tank can flow into the after-filtration tank after being filtered by the first filter screen; the second filter screens are flatly laid at the bottom of the filter tank and are arranged between the two adjacent first filter screens. Through the arrangement of the embodiment of the invention, the filtering efficiency is high, the filtering effect is good, and the filtering cost is low.

Description

Technical Field

[0001] The present application relates to the technical field of sewage treatment, and in particular to a filtering device. Background Art

[0002] Water treatment is a process that uses physical, biological and chemical methods to reduce pollutants in sewage and purify it to meet the water quality requirements for discharge into a water body or reuse.

[0003] In the related art, when water treatment is performed, pretreatment is usually performed first to remove solid pollutants in the sewage. During the pretreatment stage, a screen machine or filter screen is generally used to clean and block larger pollutants.

[0004] However, the filter mesh often gets clogged, and replacement and cleaning affect the filtration efficiency, and the cost of using a screen machine is high. Utility Model Content

[0005] The embodiment of the present application provides a filtering device to solve the technical problems in related technologies, that is, when sewage is treated, the filter screen is often clogged and needs to be replaced and cleaned, which affects the filtering efficiency, and the cost of using a screen machine is high.

[0006] The embodiment of the present application provides a filtering device, which is arranged in a filtering pool, wherein the water inlet of the filtering pool is connected to a pre-treatment pool, and the water outlet of the filtering pool is connected to a post-filtration pool; the pre-treatment pool is used to store sewage;

[0007] The filtration device includes a filtration unit, and a plurality of filtration units are arranged along the direction from the pretreatment tank to the post-filtration tank;

[0008] The filter unit includes a first filter screen and a second filter screen. The surfaces of the first filter screen and the second filter screen are both provided with a plurality of filter holes. The first filter screen is detachably arranged in the filter tank, and the sewage in the pretreatment tank can be filtered through the first filter screen and then flow into the post-filtration tank.

[0009] The second filter screen is laid flat on the bottom of the filter pool and is arranged between two adjacent first filter screens.

[0010] In a feasible implementation, the filter unit further includes a grab hook, which is arranged obliquely from the water inlet side surface of the first filter screen toward the first filter screen, and is arranged in an arc shape. Multiple grab hooks are evenly arranged on the surface of the first filter screen.

[0011] In a feasible implementation, the angle between the grab hook and the surface of the first filter screen ranges from 25° to 45°.

[0012] In a feasible implementation, the length of the grappling hook is set in the range of 5 cm to 20 cm.

[0013] In a feasible implementation, the filter tank is provided with a mounting groove that is mutually compatible with the first filter screen, and the first filter screen can be detachably installed in the mounting groove.

[0014] In a feasible implementation, the filter holes of the plurality of first filter screens gradually decrease from the direction of the pre-treatment tank to the direction of the post-filtration tank.

[0015] In a feasible implementation, the length of the second filter screen is greater than 1 / 2 of the vertical distance between two adjacent first filter screens, and the length of the second filter screen is less than 2 / 3 of the vertical distance between two adjacent first filter screens.

[0016] The embodiment of the present application provides a filtering device. In the present application, by arranging multiple filtering units along the direction from the pretreatment tank to the post-filtration tank, it is possible to achieve multiple filtration of sewage and improve the filtering efficiency. Furthermore, the embodiment of the present application detachably arranges the first filter screen in the filter tank. When one of the first filter screens is blocked, it can be salvaged for cleaning. In the process of cleaning one of the first filter screens, the work of the other first filter screens is not affected, thereby improving the sewage filtration efficiency and reducing the filtration cost. Furthermore, the embodiment of the present application lays the second filter screen flat on the bottom of the filter tank. When the blocked first filter screen is salvaged, the second filter screen can be salvaged at the same time. In the process of the second filter screen moving from the bottom of the filter tank to the top of the filter tank, impurities in the filter tank can be filtered out, further improving the filtering effect. Through the arrangement of the embodiment of the present application, a filtering efficiency with high filtration efficiency, good filtration effect and low filtration cost is provided. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0018] Figure 1 This is a structural diagram of a filtering device provided in one embodiment of the present application;

[0019] Figure 2 yes Figure 1 Schematic diagram of the structure of the filter unit.

[0020] Description of reference numerals:

[0021] 100-pretreatment pool; 200-filtration pool; 300-post-filtration pool;

[0022] 210 - filter unit; 211 - first filter; 211a - grab hook; 212 - second filter. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0024] It should be noted that many specific details are set forth in the following description to facilitate a full understanding of the present application. However, the present application can also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present application is not limited to the specific implementation methods disclosed below.

[0025] In the description of this application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as a limitation on this application. In this application, unless otherwise expressly specified and limited, a first feature being "up" or "down" a second feature may be when the first and second features are in direct contact, or when the first and second features are in indirect contact through an intermediate medium.

[0026] In this application, unless otherwise expressly specified or limited, terms such as "installed," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to internal communication between two components or an interaction between two components. However, the phrase "direct connection" indicates that the two connected entities are not connected through an intermediate structure, but are connected to form a whole through a connecting structure. Those skilled in the art can understand the specific meanings of the above terms in this application based on the specific circumstances.

[0027] In this application, references to "first," "second," and the like are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include at least one of these features.

[0028] Water treatment is a process that uses physical, biological and chemical methods to reduce pollutants in sewage and purify it to meet the water quality requirements for discharge into a water body or reuse.

[0029] In the related art, when water treatment is performed, pretreatment is usually performed first to remove solid pollutants in the sewage. During the pretreatment stage, a screen machine or filter screen is generally used to clean and block larger pollutants.

[0030] However, the filter screen often gets clogged and needs to be replaced and cleaned, which affects the filtration efficiency, and the cost of using a screen machine is relatively high.

[0031] Therefore, an embodiment of the present application provides a filtering device to solve the technical problems in related technologies, that is, when sewage is treated, the filter net is often clogged and needs to be replaced and cleaned, affecting the filtering efficiency, and the cost of using a screen machine is high.

[0032] Figure 1 It is a structural schematic diagram of a filtering device provided in one embodiment of the present application.

[0033] The present application provides a filtering device, referring to Figure 1 The filtering device is arranged in the filter pool 200, the water inlet end of the filter pool 200 is connected to the pre-treatment pool 100, and the water outlet end of the filter pool 200 is connected to the post-filtration pool 300; the pre-treatment pool 100 is used to store sewage;

[0034] The filtering device includes a filtering unit 210, and a plurality of filtering units 210 are provided along the direction from the pre-treatment tank 100 to the post-filtration tank 300;

[0035] The filter unit 210 includes a first filter screen 211 and a second filter screen 212. The surfaces of the first filter screen 211 and the second filter screen 212 are both provided with a plurality of filter holes. The first filter screen 211 is detachably disposed in the filter tank 200, and the sewage in the pre-treatment tank 100 can be filtered through the first filter screen 211 and then flow into the post-filtration tank 300.

[0036] The second filter screen 212 is laid flat on the bottom of the filter tank 200 , and the second filter screen 212 is disposed between two adjacent first filter screens 211 .

[0037] For example, the first filter screen 211 and the second filter screen 212 can be made of metal materials, such as iron, stainless steel, etc.

[0038] In actual use, the sewage is filtered in the pre-treatment tank 100 through a plurality of filter units 210, and the filtered water enters the post-filtration tank 300 (refer to Figure 1 , Figure 1The arrow in the middle indicates the direction of water flow. When one of the first filter screens 211 is clogged, the staff can salvage the first filter screen 211 and the second filter screen 212 for cleaning. During the salvaging process, the second filter screen 212 moves from the bottom of the filter pool 200 to the top of the filter pool 200, thereby further filtering out impurities in the filter pool 200.

[0039] From the above description, it can be seen that this solution achieves the following technical effects:

[0040] The embodiment of the present application provides a filtering device. In this application, by arranging multiple filtering units 210 along the direction from the pretreatment tank 100 to the post-filtration tank 300, it is possible to achieve multiple filtration of sewage and improve the filtration efficiency. Furthermore, the embodiment of the present application detachably arranges the first filter 211 in the filter tank 200. When one of the first filter screens 211 is blocked, it can be salvaged and cleaned. During the cleaning process of one of the first filter screens 211, the operation of the other first filter screens 211 is not affected, thereby improving the sewage filtration efficiency and reducing the filtration cost. Furthermore, the embodiment of the present application lays the second filter screen 212 flat on the bottom of the filter tank. When the blocked first filter screen 211 is salvaged, the second filter screen 212 can be salvaged at the same time. During the movement of the second filter screen 212 from the bottom of the filter tank 200 to the top of the filter tank 200, it can filter out impurities in the filter tank 200, further improving the filtration effect. Through the arrangement of the embodiment of the present application, a filtration efficiency with high filtration efficiency, good filtration effect and low filtration cost is provided.

[0041] Figure 2 yes Figure 1 Schematic diagram of the structure of the filter unit.

[0042] In some examples, reference Figure 2 ( Figure 2 The direction of the arrow in the middle indicates the direction of water flow), the filter unit 210 also includes a grab hook 211a, which is inclined from the water inlet side surface of the first filter mesh 211 to the back of the first filter mesh 211, and the grab hook 211a is set in an arc shape, and multiple grab hooks 211a are evenly arranged on the surface of the first filter mesh 211.

[0043] It should be noted that the grab hook 211 a can be integrally formed with the first filter screen 211 , or the grab hook 211 a can be separately formed from the first filter screen 211 .

[0044] For example, the first filter screen 211 is made of metal, and the hook 211 a can also be made of metal.

[0045] In the embodiment of the present application, the grab hook 211a is tilted from the surface of the water inlet side of the first filter screen 211 to the back of the first filter screen 211, so that the solid waste in the sewage can be hooked by the grab hook 211a. In the embodiment of the present application, the grab hook 211a is set to an arc shape, so that more solid pollutants can be accumulated on the surface of the grab hook 211a, thereby improving the filtering efficiency of the sewage.

[0046] Exemplarily, the angle between the hook 211 a and the surface of the first filter screen 211 ranges from 25° to 45°.

[0047] For example, the angle between the grab hook 211a and the surface of the first filter screen 211 can be a value such as 25°, 30°, 35° or 40°. In specific implementation, the angle range between the grab hook 211a and the surface of the first filter screen 211 is usually set to 30°. In specific applications, when the angle between the grab hook 211a and the surface of the first filter screen 211 is 30°, the filtration efficiency of the first filter screen 211 and the grab hook 211a is the best.

[0048] In the embodiment of the present application, when the angle between the grab hook 211a and the surface of the first filter screen 211 is less than 25° or greater than 45°, the grab hook 211a can hook fewer solid pollutants. When the angle between the grab hook 211a and the surface of the first filter screen 211 is greater than 25° and less than 45°, the grab hook 211a can hook more solid pollutants, and the filtration efficiency of the first filter screen 211 and the grab hook 211a is better.

[0049] Exemplarily, the length of the grappling hook 211 a is set in the range of 5 cm to 20 cm.

[0050] For example, the length of the hook 211 a can be 5 cm, 10 cm, 15 cm, or 20 cm.

[0051] In specific applications, when the length of the hook 211a is less than 5 cm, the hook 211a can hook less solid pollutants. When the length of the hook 211a is greater than 20 cm, due to the large number of hooks 211a, the weight of the hook 211a is large, it is more difficult to salvage the first filter net 211, and the cost of the hook 211a is high.

[0052] In the embodiment of the present application, the length of the grappling hook 211 a is set in the range of 5 cm to 20 cm, which can not only catch more solid pollutants but also reduce costs.

[0053] Illustratively, the filter pool 200 is provided with a mounting groove that is mutually compatible with the first filter screen 211 , and the first filter screen 211 can be detachably mounted in the mounting groove.

[0054] The embodiment of the present application facilitates the installation and removal of the first filter 211 by providing an installation groove that is compatible with the first filter 211 in the filter pool 200. When the first filter 211 is blocked, the first filter 211 can be directly fished out and cleaned.

[0055] Exemplarily, the filter holes of the plurality of first filter screens 211 gradually decrease in size from the pre-treatment tank 100 to the post-filtration tank 300 .

[0056] In the embodiment of the present application, by gradually reducing the filter holes of the multiple first filter nets 211 from the pretreatment tank 100 to the post-filtration tank 300, the multiple first filter nets 211 can achieve multi-stage filtration of sewage from the pretreatment tank 100 to the post-filtration tank 300, thereby improving the filtration efficiency of sewage.

[0057] In some other examples, the length of the second filter screen 212 is greater than 1 / 2 of the vertical distance between two adjacent first filter screens 211 , and the length of the second filter screen 212 is less than 2 / 3 of the vertical distance between two adjacent first filter screens 211 .

[0058] Exemplarily, the length of the second filter screen 212 can be set to 7 / 12 of the vertical distance between two adjacent first filter screens 211 .

[0059] In the embodiment of the present application, when the length of the second filter is less than 1 / 2 of the vertical distance between two adjacent first filter screens 211, the second filter screen 212 has a poor filtering effect on the sewage. When the length of the second filter screen 212 is greater than 2 / 3 of the vertical distance between two adjacent first filter screens 211, the second filter screen 212 is larger, making it more difficult and costly to salvage the sewage. Therefore, setting the length of the second filter screen 212 to be greater than 1 / 2 of the vertical distance between two adjacent first filter screens 211 and less than 2 / 3 of the vertical distance between two adjacent first filter screens 211 not only ensures filtering effectiveness but also reduces the difficulty and cost of salvaging.

[0060] It is easy to understand that those skilled in the art can combine, split, reorganize, etc. the embodiments of the present application based on the several embodiments provided in the present application to obtain other embodiments, and these embodiments do not exceed the scope of protection of the present application.

[0061] The above specific implementation methods further explain in detail the purpose, technical solutions and beneficial effects of the embodiments of the present application. It should be understood that the above are only specific implementation methods of the embodiments of the present application and are not intended to limit the scope of protection of the embodiments of the present application. Any modifications, equivalent replacements, improvements, etc. made on the basis of the technical solutions of the embodiments of the present application should be included in the scope of protection of the embodiments of the present application.

Claims

1. A filter device, the filter device being arranged in a filter tank, wherein the water inlet of the filter tank is connected to a pre-treatment tank, and the water outlet of the filter tank is connected to a post-filtration tank; the pre-treatment tank is used to store sewage; It is characterized by: The filtering device includes a filtering unit, and a plurality of the filtering units are arranged along the direction from the pretreatment tank to the post-filtration tank; The filter unit includes a first filter screen and a second filter screen, wherein the surfaces of the first filter screen and the second filter screen are both provided with a plurality of filter holes, the first filter screen is detachably arranged in the filter tank, and the sewage in the pre-treatment tank can be filtered through the first filter screen and then flow into the post-filtration tank; The second filter screen is laid flat on the bottom of the filter pool, and the second filter screen is arranged between two adjacent first filter screens.

2. A filtering device according to claim 1, characterized in that: The filter unit further includes a grab hook, which is arranged obliquely from the water inlet side surface of the first filter screen to face away from the first filter screen, and the grab hook is arranged in an arc shape. A plurality of the grab hooks are evenly arranged on the surface of the first filter screen.

3. A filtering device according to claim 2, characterized in that: The included angle between the grab hook and the surface of the first filter screen is in the range of 25° to 45°.

4. A filtering device according to claim 2, characterized in that: The length of the grab hook is set in the range of 5cm to 20cm.

5. A filtering device according to any one of claims 1 to 4, characterized in that: The filter pool is provided with an installation groove which is mutually adapted with the first filter screen, and the first filter screen can be detachably installed in the installation groove.

6. A filtering device according to any one of claims 1 to 4, characterized in that: The filter holes of the first filter screens gradually decrease from the direction of the pre-treatment tank to the direction of the post-filtration tank.

7. A filtering device according to any one of claims 1 to 4, characterized in that: The length of the second filter screen is greater than 1 / 2 of the vertical distance between two adjacent first filter screens, and the length of the second filter screen is less than 2 / 3 of the vertical distance between two adjacent first filter screens.

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