Hydrodynamic backwash filter screen

Abstract

The utility model provides water power back flushes filter screen cylinder, including screen cylinder support, filter cartridge and filter screen, the filter cartridge both ends are installed with prefabricated hole baffle, the filter cartridge is connected with screen cylinder support suitably through prefabricated hole baffle and rotates, filter cartridge inside is provided with driving vane, and driving vane has a plurality of, and a plurality of driving vanes are equidistantly arranged along filter cartridge inside circumference direction, filter screen is installed on the filter cartridge, and screen cylinder support is provided with back flush outlet, back flush outlet is used for spraying back flush water flow to driving vane and drives filter cartridge and filter screen to rotate, the utility model can solve the problem that the existing laminated filter is difficult to discharge the impurity accumulated in the laminated groove when operating automatically back flushes, needs to stop and wash the laminated piece manually. This filter screen cylinder has enhanced the anti -clogging performance and the flow of filter core, and further more effectively guarantees the normal operation of farmland irrigation.

Description

Technical Field

[0001] This utility model relates to the technical field of drip irrigation systems, specifically to a hydrodynamic backwashing filter cylinder. Background Technology

[0002] Drip irrigation is a highly efficient water-saving irrigation method. Through pipes and drip irrigation systems installed in the field, water and dissolved fertilizer are delivered directly to the soil near the crop roots in a slow, even, and precise manner, enabling the crop roots to absorb water and nutrients efficiently.

[0003] In arid, semi-arid, or surface water-scarce regions, well water is an important source of water for agricultural drip irrigation. Therefore, in existing technologies, well water is often used for drip irrigation.

[0004] Well water is relatively stable in quality; however, certain impurities it contains can still pose a direct threat to the safe operation of drip irrigation systems.

[0005] In existing well water drip irrigation systems, disc filters are mostly used to filter the drip irrigation water. Disc filters use grooves on the discs to intercept and filter impurities in the drip irrigation water.

[0006] However, in actual use, some impurities become stuck in the grooves and are difficult to remove, and cannot be effectively stripped and carried away during the automatic backwashing process; after the impurities accumulated in the grooves of the discs cause blockages, the machine needs to be stopped and the discs need to be cleaned manually, which seriously affects the normal drip irrigation efficiency. Utility Model Content

[0007] The purpose of this utility model is to provide a hydrodynamic backwashing filter cylinder, which can solve the problem that when existing disc filters are automatically backwashed, the impurities accumulated in the grooves of the discs are not easy to be discharged, requiring the machine to be stopped and the discs to be manually cleaned, which seriously affects the normal drip irrigation efficiency.

[0008] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0009] A hydrodynamic backwashing filter cylinder includes a filter cylinder support, a filter cylinder and a filter screen. Pre-drilled perforated baffles are installed at both ends of the filter cylinder, and the filter cylinder is rotatably connected to the filter cylinder support through the pre-drilled perforated baffles.

[0010] The filter cartridge is equipped with several driving blades, which are evenly spaced along the circumference inside the filter cartridge.

[0011] The filter screen is installed on the filter cylinder, and the filter cylinder support is provided with a backwash water outlet. The backwash water outlet is used to spray backwash water into the drive blades to drive the filter cylinder and filter screen to rotate.

[0012] Preferably, the drive blades are tilted.

[0013] Preferably, the pre-formed perforated baffle is detachably connected to the filter cartridge.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] In this invention, when backwashing is required, the backwash outlet hole on the screen support coaxially mounted with the filter cartridge sprays backwash water at a certain angle; when the backwash water impacts the drive blades connected inside the filter cartridge, it can drive the filter cartridge and filter screen to rotate around the axis of the screen support; so that all parts of the filter screen and filter cartridge can be washed evenly.

[0016] Furthermore, the rotation of the filter cartridge by the backwash water flow and the drive blades can generate relative motion between the filter screen surface and the backwash water flow, thereby increasing the shearing force of the backwash water flow on the impurities attached to the filter screen surface and improving the cleaning effect on sticky impurities attached to the filter screen or fine particles embedded in the filter holes.

[0017] In the backwashing process, this invention can remove impurities attached to the filter screen surface simply by rinsing the filter screen with backwash water, achieving a better backwashing effect and improving backwashing efficiency. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of this utility model.

[0020] Figure 2 This is a schematic diagram of the filter cartridge in this utility model.

[0021] Figure 3 This is a schematic diagram showing the connection relationship between the filter cartridge and the pre-formed perforated baffle in this utility model.

[0022] Figure 4 This is a schematic diagram showing the connection relationship between the mesh cylinder support and the pre-fabricated hole baffle in this utility model.

[0023] Figure 5 This is a perspective view of the pre-formed hole baffle in this utility model.

[0024] The attached diagram lists the components represented by each number as follows:

[0025] 101-Mesh cylinder support, 102-Filter cylinder, 103-Filter screen, 104-Drive blade, 105-Backwash outlet, 106-Pre-made hole baffle, 107-First connecting hole, 108-Flush column, 109-Flush drain, 110-Second connecting hole, 111-Slot, 112-Threaded plug, 113-Insert, 114-Sealing ring. Detailed Implementation

[0026] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0027] In the description of the embodiments of this utility model, it should be understood that the terms "length", "vertical", "horizontal", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0029] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0030] In this embodiment of the invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0031] The following disclosure provides many different implementations or examples for different structures of the embodiments of the present invention. To simplify the disclosure of the embodiments of the present invention, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the embodiments of the present invention. Furthermore, reference numerals and / or reference letters may be repeated in different examples of the embodiments of the present invention; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various implementations and / or arrangements discussed.

[0032] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0033] See Figure 1 - Figure 5 This embodiment discloses a backwashing mechanism for cleaning the filtration mechanism. Specifically, it is a hydrodynamic backwashing filter cylinder, including a cylinder support 101, a filter cylinder 102 and a filter screen 103. The filter cylinder 102 is equipped with pre-drilled hole baffles 106 at both ends. The filter cylinder 102 is rotatably connected to the cylinder support 101 through the pre-drilled hole baffles 106.

[0034] The filter cartridge 102 is provided with a number of driving blades 104, which are arranged at equal intervals along the circumferential direction inside the filter cartridge 102.

[0035] The filter screen 103 is installed on the filter cylinder 102. The filter cylinder support 101 is provided with a backwash water outlet 105. The backwash water outlet 105 is used to spray backwash water into the drive blades 104 to drive the filter cylinder 102 and the filter screen 103 to rotate.

[0036] In this embodiment, the hydrodynamic backwash filter cylinder adopts a modular design, which is assembled from multiple backwash filter cylinders. Several backwash filter cylinders are detachably connected and interconnected (by means of threads or buckles, etc.), which facilitates maintenance and replacement. The filter screen 103 and the filter cylinder 102 are made of polyethylene material or stainless steel mesh, and the filter screen 103 and the filter cylinder 102 are integrally molded by injection molding, which makes the structure of the filter screen 103 and the filter cylinder 102 stable, the manufacturing process simple, and the manufacturing cost low.

[0037] A filter pipe communicating with the bottom of the mesh cylinder support 101 is installed, and the backwash outlet 105 is disposed on the mesh cylinder support 101. Under normal working conditions, the water to be filtered first comes into contact with the filter screen 103 located outside the filter cylinder 102, and the fine impurities (such as fine sand, suspended particles, etc.) in the water are intercepted and filtered through the densely distributed filter pores on the surface of the filter screen 103. The filtered clean water flows into the filter pipe to provide a clean water source for subsequent drip irrigation systems or other water-using equipment.

[0038] When backwashing is required, backwash water at a certain angle will spray from the backwash outlet 105 on the screen support 101, which is coaxially arranged with the filter cartridge 102. When the backwash water impacts the drive blades 104 connected inside the filter cartridge 102, it drives the filter cartridge 102 and the filter screen 103 to rotate around the axis of the screen support 101. This ensures that all parts of the filter screen 103 and the filter cartridge 102 are evenly rinsed, guaranteeing thorough removal of impurities. Furthermore, the rotation of the filter cartridge 102 through the cooperation of the backwash water and the drive blades 104 enables… The relative motion between the surface of the filter screen 103 and the backwash water flow increases the shearing force of the backwash water flow on the impurities attached to the surface of the filter screen 103, thereby improving the cleaning effect on sticky impurities attached to the filter screen 103 or fine particles embedded in the filter holes. In this embodiment, the filter cartridge 102 is driven to rotate by the backwash water flow driving the blades 104 to drive the filter, eliminating the need for an external motor and reducing the overall failure rate. Moreover, during the backwashing process, this application can remove the impurities attached to the surface of the filter screen simply by rinsing the filter screen with the backwash water flow, achieving a better backwashing effect and improving backwashing efficiency.

[0039] In some embodiments, pre-drilled perforated baffles 106 are installed on both sides of the filter cartridge 102. In this embodiment, conventional bearings are installed on the mesh cylinder support 101, and the mesh cylinder support 101 is rotatably connected to the pre-drilled perforated baffles 106 via the bearings.

[0040] In some embodiments, the drive blades 104 are inclined. In this embodiment, when the backwash water flows over the drive blades 104, the inclination angle of the drive blades 104 enables the backwash water flow to drive the filter cartridge 102 to rotate more efficiently.

[0041] In some embodiments, the pre-formed hole baffle 106 is detachably connected to the filter cartridge 102. In this embodiment, the bottom end of the pre-formed hole baffle 106 is provided with a plurality of slots 111, and the plurality of slots 111 are respectively provided with the drive blades 104; after the slots 111 cooperate with the corresponding drive blades 104, the drive blades 104 can support and limit the pre-formed hole baffle 106. The pre-formed hole baffle 106 is provided with a plurality of first connecting holes 107, which are equally spaced along the circumference of the pre-formed hole baffle 106. The filter cartridge 102 is provided with a plurality of second connecting holes 110 corresponding to the first connecting holes 107. In this embodiment, the first connecting holes 107 and the second connecting holes 110 are both semi-circular stepped hole structures with internal threaded grooves. After the slot 111 cooperates with the drive blade 104, the first connecting holes 107 and the second connecting holes 110 are aligned to form a complete bolt hole. A conventional connecting bolt is installed in the bolt hole. The connecting bolt is used to fix the pre-formed hole baffle 106 on the filter cartridge 102. By providing the slot 111 for cooperating with the drive blade 104, the first connecting holes 107 and the second connecting holes 110 can be quickly aligned, further improving installation efficiency and allowing users to install and replace the pre-formed hole baffle 106 according to actual needs.

[0042] In some embodiments, the screen cylinder support 101 is a flushing mechanism provided in a disc filter. In this embodiment, the screen cylinder support 101 includes a threaded plug 112, a flushing column 108, and a plurality of flushing channels 109. The bottom end of the threaded plug 112 is fixedly connected to a threaded column, and the flushing column 108 is provided with a threaded groove for cooperating with the threaded column. The threaded plug 112 is detachably connected to the flushing column 108 through the threaded column. The threaded plug 112 is used to close the port of the screen cylinder support 101 to ensure the filtration effect. At the same time, by setting the threaded plug 112, it can also prevent the influent water to be filtered from entering the interior of the screen cylinder support 101, thereby affecting the stability of the water flow and the filtration efficiency.

[0043] The flushing rows 109 are evenly spaced along the circumference of the flushing column 108 and are fixedly connected to the flushing column 108. Several backwash outlet holes 105 are provided on the side of the flushing rows 109 and communicate with the interior of the flushing column 108. One end of the flushing column 108 away from the threaded plug 112 is connected to the filter pipe. In this embodiment, the flushing column 108 serves as a container and conveyor for the backwash water flow, capable of storing a certain amount of high-pressure water to provide a continuous and stable water source for the backwashing process. During backwashing, the water flow within the flushing column 108 can quickly flow to each flushing row 109 fixedly connected to the flushing column 108 under pressure, ensuring that the backwashing process is not interrupted due to insufficient water supply, thus guaranteeing the continuity and effectiveness of backwashing. The evenly spaced flushing rows 109 along the circumference of the flushing column 108 can evenly distribute the water flow within the flushing column 108 to each flushing row 109. This ensures that all parts of the filter screen 103 and filter cartridge 102 in the circumferential direction can obtain a relatively uniform backwash water flow, avoiding situations where there is too much or too little water flow in certain areas. When the filter cartridge 102 rotates during backwashing, the relative motion trajectory formed between the backwash water flow and the surfaces of the filter screen 103 and filter cartridge 102 is more complex, which can generate stronger shearing force and help to peel off those tightly attached impurities.

[0044] In some embodiments, the flushing column 108 is provided with a slide rail, and the flushing drain 109 is slidably connected to the slide rail. The backwash outlet 105 provided on the flushing drain 109 communicates with the interior of the flushing column 108. A locking member is threadedly connected to the slide rail, and the flushing drain 109 is provided with a threaded hole that mates with the locking member. In this embodiment, the flushing drain 109 is slidably and sealingly connected to the flushing column 108 via the slide rail, which facilitates the user to replace the flushing drain 109 with backwash outlets 105 of different angles, numbers, and diameters according to actual needs. In this embodiment, the locking member is a fixing bolt. After the flushing drain 109 is installed on the slide rail, the flushing drain 109 can be disassembled and fixed by rotating the fixing bolt so that the fixing bolt mates with the threaded hole.

[0045] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0046] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. It should be noted that any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A hydrodynamic backwashing filter cylinder, including a cylinder support (101), characterized in that: It also includes a filter cylinder (102) and a filter screen (103). The filter cylinder (102) is equipped with pre-drilled hole baffles (106) at both ends. The filter cylinder (102) is rotatably connected to the screen support (101) through the pre-drilled hole baffles (106). The filter cartridge (102) is provided with drive blades (104), and there are several drive blades (104). The drive blades (104) are arranged at equal intervals along the circumferential direction inside the filter cartridge (102). The filter screen (103) is installed on the filter cylinder (102), and the screen cylinder support (101) is provided with a backwash water outlet (105). The backwash water outlet (105) is used to spray backwash water onto the drive blades (104) to drive the filter cylinder (102) and the filter screen (103) to rotate.

2. The hydrodynamic backwashing filter cylinder according to claim 1, characterized in that: The drive blade (104) is tilted.

3. The hydrodynamic backwashing filter cylinder according to claim 1, characterized in that: The pre-formed perforated baffle (106) is detachably connected to the filter cartridge (102).

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