Filtering equipment

Abstract

The utility model relates to the technical field of water treatment equipment, in particular to filtering equipment. The filtering equipment comprises a box body and a filtering module arranged in the box body, wherein the filtering module comprises a liquid pumping assembly, a plate group frame and a plurality of filtering plates positioned in the plate group frame, and a filtering cavity is defined by the plate group frame and the plurality of filtering plates; the plate set frame is provided with a central symmetry face extending in the vertical direction, two filter plates are symmetrically arranged on the two sides of the central symmetry face, and set inclination angles are formed between the two filter plates and the central symmetry face. According to the filtering equipment, the obliquely arranged filtering plate structure enables impurity particles to be automatically separated from the surface of the filtering plate under the action of gravity, automatic falling of impurities can be achieved, maintenance of the filtering module can be achieved without shutdown backwashing, damage to the filtering module in a traditional backwashing mode is avoided, and therefore the filtering efficiency is improved, and the service life of the filtering equipment is prolonged. The maintenance frequency is reduced, and the service life of the filtering module is prolonged.

Description

A filtration device Technical Field

[0001] This utility model relates to the technical field of water treatment equipment, and in particular to a filtration device. Background Technology

[0002] Wastewater treatment equipment is mainly used to treat and filter wastewater to ensure that the discharged wastewater meets the required standards. The core component of wastewater treatment equipment is the filter module, which has filter plates for filtering wastewater. Through the filtering action of the filter plates, solid impurities in the wastewater are removed.

[0003] In existing wastewater treatment equipment, after a period of use, a significant amount of impurities accumulate on the filter modules, affecting filtration efficiency. To avoid impacting operation, cleaning is typically required, usually using backflushing. However, this not only reduces filtration efficiency but also shortens the lifespan of the filter modules. Summary of the Invention

[0004] The purpose of this invention is to provide a filtration device that improves filtration efficiency while extending the service life of the filtration module.

[0005] The filtration device of this utility model includes a housing and a filtration module disposed in the housing:

[0006] The box is equipped with a liquid inlet;

[0007] The filtration module includes a liquid extraction component, a plate frame, and multiple filter plates located in the plate frame. The plate frame and the multiple filter plates form a filtration chamber. The filtration chamber has an upper opening, and a chamber cover is provided at the upper opening. The chamber cover has a liquid outlet. The liquid extraction component is used to extract the purified water in the filtration chamber from the liquid outlet.

[0008] The plate frame has a central symmetry plane extending in the vertical direction, and two filter plates are symmetrically arranged on both sides of the central symmetry plane. The two filter plates have a set inclination angle with the central symmetry plane so that impurity particles are detached from the filter plates due to their own weight.

[0009] Furthermore, the set tilt angle is greater than or equal to 5° and less than or equal to 45°.

[0010] Furthermore, the axis of the inlet is parallel to the plane of the filter plate so that the wastewater disturbs the impurity particles on the surface of the filter plate.

[0011] Furthermore, the filter module has a plurality of filter chambers arranged at intervals, and a plurality of liquid inlets are arranged at intervals along the horizontal direction, with at least one liquid inlet facing the gap between two adjacent filter chambers.

[0012] Furthermore, the liquid extraction assembly includes an outlet pipe and a liquid extraction branch pipe, the liquid extraction branch pipe being located in the filter chamber, the liquid extraction branch pipe being provided with a water passage, and the outlet pipe being connected to the liquid extraction branch pipe and extending out from the outlet.

[0013] Furthermore, the liquid extraction branch pipe extends along the depth direction of the filter chamber, and there are multiple water passage holes arranged at intervals along the axial direction of the liquid extraction branch pipe.

[0014] Furthermore, the distribution density of the water passage holes gradually increases in the direction away from the liquid outlet.

[0015] Furthermore, there are multiple liquid extraction branch pipes, which are spaced apart along the width direction of the filter chamber.

[0016] Furthermore, the housing has a main outlet pipe, and multiple filter modules are arranged in parallel inside the housing. Each of the multiple filter modules has a control valve at the end of its pumping assembly and is connected to the main outlet pipe through the control valve. The control valve has an open state and a closed state. When it is in the open state, the filter module filters the wastewater. When it is in the closed state, the filter module is in a self-cleaning state.

[0017] Furthermore, the lower part of the box has a conical section, and a drain outlet is provided at the bottom of the conical section.

[0018] To solve the above-mentioned technical problems, this utility model provides a filter plate and a filter plate assembly.

[0019] Compared with the prior art, the present invention has at least the following beneficial effects:

[0020] The filtration device of this application features an inclined filter plate structure that utilizes gravity to automatically detach impurity particles from the filter plate surface. The modular filter chamber design forms a complete filtration-liquid extraction channel, and the integration of the housing and filter module provides structural support and a liquid inlet channel. The physical tilt design enables automatic impurity detachment, allowing for filter module maintenance without shutdown and backwashing. This avoids damage to the filter module caused by traditional backwashing methods, thereby improving filtration efficiency, reducing maintenance frequency, and extending the filter module's lifespan. Attached Figure Description

[0021] Figure 1 is a schematic diagram of the structure of an embodiment of the filtration device of this utility model;

[0022] Figure 2 is a schematic diagram of the filter module of the filter device in Figure 1;

[0023] Figure 3 is a top view of the cavity cover and the liquid extraction branch pipeline of the filter module in Figure 2.

[0024] Figure 4 is a front view of the cavity cover and the liquid extraction branch pipeline of the filter module in Figure 2;

[0025] Figure 5 is a left view of the cavity cover and the liquid extraction branch pipeline of the filter module in Figure 2.

[0026] Figure label:

[0027] 100. Tank body; 110. Liquid inlet; 120. Main liquid outlet; 130. Control valve; 140. Drain outlet;

[0028] 200. Filtering module;

[0029] 210. Liquid extraction assembly; 211. Liquid outlet pipe; 212. Liquid extraction branch pipe;

[0030] 220. Panel frame;

[0031] 230. Filter plate;

[0032] 240. Cavity cover. Detailed Implementation

[0033] The following description, in conjunction with schematic diagrams, illustrates a preferred embodiment of the present invention. It should be understood that those skilled in the art can modify the present invention described herein while still achieving its advantageous effects. Therefore, the following description should be understood as being of general knowledge to those skilled in the art and not as a limitation thereof. Based on the teachings of this specification, those skilled in the art can form new technical solutions through cross-combinations of different implementation methods without creating technical contradictions; such modifications should all be considered to fall within the protection scope of this patent.

[0034] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages). In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for 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 this utility model.

[0035] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0036] In this application, unless otherwise expressly specified and limited, the term "connection" shall be interpreted broadly.

[0037] For example, a "connection" can be a fixed connection, a detachable connection, or an integral part; it can be a direct connection or an indirect connection through an intermediate medium. Furthermore, the term "electrical connection" can refer to a direct electrical connection or an indirect electrical connection through an intermediate medium.

[0038] The present invention will be described more specifically by way of example in the following paragraphs with reference to the accompanying drawings. The advantages and features of the present invention will become clearer from the following description and claims. It should be noted that the drawings are in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the present invention.

[0039] The filtration device of this utility model will be described below with reference to Figures 1 to 5 in the specification.

[0040] In some embodiments, as shown in Figures 1 and 2, the filtration device includes a housing 100 and a filtration module 200 disposed in the housing 100.

[0041] The housing 100 is provided with a liquid inlet 110.

[0042] The filtration module 200 includes a liquid extraction component 210, a plate frame 220, and a plurality of filter plates 230 located in the plate frame 220. The plate frame 220 and the plurality of filter plates 230 form a filtration chamber. The filtration chamber has an upper opening, and a chamber cover 240 is provided at the upper opening. The chamber cover 240 has a liquid outlet. The liquid extraction component 210 is used to extract the purified water in the filtration chamber from the liquid outlet.

[0043] The plate frame 220 has a central symmetry plane extending in the vertical direction. Two filter plates 230 are symmetrically arranged on both sides of the central symmetry plane. The two filter plates 230 have a set inclination angle with the central symmetry plane so that impurity particles are removed from the filter plates 230 due to their own weight.

[0044] The inclined filter plate 230 structure in this application utilizes gravity to automatically detach impurity particles from the surface of the filter plate 230. The modular filter chamber design forms a complete filtration-liquid extraction channel. The integration of the housing 100 and the filter module 200 provides structural support and a liquid inlet channel. The physical tilt design enables automatic impurity detachment, allowing maintenance of the filter module 200 without shutdown and backwashing. This avoids damage to the filter module 200 caused by traditional backwashing methods, thereby improving filtration efficiency, reducing maintenance frequency, and extending the service life of the filter module 200.

[0045] In some embodiments, preferably, the set tilt angle is greater than or equal to 5° and less than or equal to 45°. This tilt angle range ensures that impurities are removed in a timely manner while avoiding structural instability caused by excessive angle.

[0046] Specifically, the plate frame 220 has multiple mounting positions that are adapted to and correspond one-to-one with the filter plate 230. The filter plate 230 is fixed in the mounting positions. By setting a set tilt angle for the mounting positions, the tilt angle of the filter plate 230 can be set. The set tilt angle is further preferably 10°-30°, which ensures the effect of impurity sliding off while facilitating the compact arrangement of the filter module 200. For example, it can be 10°, 20°, or 30°. In other embodiments, it can also be 5°, 40°, or 45°.

[0047] In some embodiments, the axis of the inlet 110 is parallel to the plane of the filter plate 230 so that the wastewater disturbs the impurity particles on the surface of the filter plate 230.

[0048] Specifically, the design of the inlet 110's axis being parallel to the plane of the filter plate 230 can be achieved in the following ways: the inlet 110 adopts a horizontal straight pipe structure, with its central axis parallel to the extended plane of the filter plate 230; or it adopts an inclined pipe structure, with the outlet direction parallel to the plane of the filter plate 230 by adjusting the angle. As a preferred embodiment, the inlet 110 can be equipped with a guide plate for precise control of the water flow direction. In addition, the inlet 110 can be designed as a rotatable structure to facilitate adjustment of the inlet angle according to actual needs.

[0049] The directional water inlet design allows the wastewater flow to directly impact the surface of the filter plate 230, using hydrodynamic disturbance to dislodge attached impurities. Specifically, firstly, continuous water flow prevents impurity accumulation and reduces the frequency of downtime for cleaning; secondly, the parallel water inlet method enhances the shearing effect of the fluid on the surface of the filter plate 230, improving impurity removal efficiency; and finally, the structure is simple and reliable, achieving self-cleaning without the need for an additional power unit.

[0050] In one embodiment, the filter module 200 has a plurality of filter chambers arranged at intervals, and a plurality of liquid inlets 110 are arranged at intervals in the horizontal direction, with at least one liquid inlet 110 facing the gap between two adjacent filter chambers.

[0051] For example, the plate assembly frame 220 has four mounting positions. Two mounting positions and their corresponding filter plates 230 form a group. The bottoms of the two mounting positions in the same group are connected by a bottom wall to form a filter cavity, so that the plate assembly module in this embodiment has two filter cavities, and the two filter cavities are connected by a connecting plate. In other embodiments, two or six mounting positions can be provided to form one or three filter cavities respectively.

[0052] Specifically, the horizontally spaced arrangement of the inlets 110 can employ a branched inlet pipe system, with the spacing between each branch matching the spacing of the filter chambers. Aligning the inlets 110 with the gaps in the filter chambers allows one inlet to simultaneously clean two adjacent filter plates 230. As a preferred embodiment, the inlets 110 can be equipped with guide plates, which have an arc-shaped structure to concentrate and guide the water flow towards the gap area of ​​the filter chambers.

[0053] The parallel arrangement of multiple filtration chambers maintains the overall filtration flux, while the design of the inlet 110 aligned with the gaps allows the water flow to directly impact areas prone to buildup. Through hydraulic flushing, impurities are carried away from the gaps, effectively preventing their accumulation. Furthermore, the distributed arrangement of the multiple inlets 110 ensures a uniform distribution of the water flow impact force.

[0054] In one embodiment, as shown in FIG2, the liquid extraction assembly 210 includes an outlet pipe 211 and a liquid extraction branch pipe 212. The liquid extraction branch pipe 212 is located in the filter chamber and is provided with a water passage. The outlet pipe 211 is connected to the liquid extraction branch pipe 212 and extends out from the outlet.

[0055] Specifically, the outlet pipe 211 is connected to the branch pipe using a flange connection or an integral molding process, with a sealing ring installed at the connection to prevent leakage. The water passage hole can be designed as a conical structure, with the inlet diameter larger than the outlet diameter.

[0056] Furthermore, in some embodiments, the liquid extraction branch pipe 212 extends along the depth direction of the filter chamber, and the water passage holes are multiple and arranged at intervals along the axial direction of the liquid extraction branch pipe 212.

[0057] Specifically, the liquid extraction branch pipe 212 extends along the depth of the filter chamber in the following ways: a straight or curved pipe structure is used to penetrate from the top to the bottom of the filter chamber, and the pipe diameter can be selected according to the liquid flow requirements. The water passage holes can be arranged in an equidistant manner; or they can be arranged in a gradually changing pattern, with larger spacing near the outlet and smaller spacing further away. The hole shape can be circular, elliptical, or elongated. The pipe material can be corrosion-resistant PVC, stainless steel, or polypropylene.

[0058] The deeply extended pipeline covers the entire working area of ​​the filter chamber, and multiple water passages form distributed suction points, which effectively avoids the local liquid retention phenomenon caused by traditional single-point suction, significantly improves the uniformity of liquid flow, improves filtration efficiency, and reduces the risk of filter plate 230 clogging due to uneven liquid extraction.

[0059] Preferably, the distribution density of the water passage holes gradually increases in the direction away from the liquid outlet.

[0060] Since frictional resistance along the pipeline can cause a decrease in suction force at the end, increasing the density of water passages at the far end can balance the flow distribution in each section, thereby achieving a balanced improvement in filtration efficiency.

[0061] For example, the liquid extraction branch pipe 212 can be evenly divided into three sections. In the first section near the liquid outlet, 5-8 water passages are arranged; in the second section, 9-12 water passages are arranged; and in the third section at the end, 13-16 water passages are arranged. Alternatively, the spacing between the water passages can decrease in an arithmetic progression.

[0062] Furthermore, in some embodiments, as shown in Figures 3, 4 and 5, there are multiple liquid extraction branch lines 212 arranged at intervals along the width direction of the filter chamber.

[0063] Specifically, the liquid extraction branch pipes 212 are tubular structures installed inside the filter chamber. Their number can be adjusted according to the width of the filter chamber, and are usually set to 2-6, such as 3, 4 or 5. The spacing between each branch pipe can be kept uniform.

[0064] By increasing the number of drainage branch lines 212 and optimizing their spatial distribution, the uniformity of liquid flow within the filtration chamber is effectively improved. Multiple branch lines can cover a wider filtration area, avoiding localized over- or under-suction caused by the limited suction range of a single line. The spacing along the width ensures uniform distribution of suction force, preventing the formation of stagnant water zones within the filtration chamber. The coordinated operation of multiple lines improves overall drainage efficiency, maintains a stable pressure distribution within the filtration chamber, and significantly enhances the stability and efficiency of the filtration process.

[0065] Furthermore, in some embodiments, the housing 100 has a main outlet pipe 120, and multiple filter modules 200 are arranged in parallel inside the housing 100. The end of the liquid extraction component 210 of each filter module 200 is provided with a control valve 130 and connected to the main outlet pipe 120 through the control valve 130. The control valve 130 has an open state and a closed state. When it is in the open state, the filter module 200 filters the sewage. When it is in the closed state, the filter module 200 is in a self-cleaning state.

[0066] Specifically, the control valve 130 can be controlled by an electric ball valve, butterfly valve, or solenoid valve, wherein the electric actuator can receive PLC signals to achieve automatic switching. The diameter design of the main outlet pipe 120 needs to meet the flow requirements when multiple filter modules 200 drain simultaneously. The parallel arrangement of the filter modules 200 includes, but is not limited to: horizontal side-by-side arrangement, ring array arrangement, or layered three-dimensional arrangement. The self-cleaning state can be achieved by combining the principle of gravity sedimentation. When the valve is closed, the liquid in the filter chamber stops flowing, and the impurities attached to the surface of the filter plate 230 naturally fall off under the action of gravity.

[0067] This embodiment achieves parallel operation of filtration and cleaning through modular parallel design and independent valve control. Specifically, when some filter modules 200 require cleaning due to impurity accumulation, only the corresponding valve needs to be closed to put them into self-cleaning mode, while the remaining modules can continue filtration, thus avoiding the drawback of traditional equipment requiring complete shutdown for cleaning. The switching of the working state of the filter modules 200 only requires valve control, without disassembly or manual intervention, significantly improving the continuity of equipment operation. Furthermore, the centralized drainage design of the main outlet pipe 120 simplifies the pipeline layout and facilitates maintenance and management. This embodiment minimizes the impact of cleaning operations on production efficiency while ensuring filtration effectiveness, and eliminates the need for cleaning methods such as backflushing that may damage the filter media.

[0068] Furthermore, in some embodiments, the lower part of the housing 100 has a tapered portion, and a drain outlet 140 is provided at the bottom of the tapered portion.

[0069] The conical section refers to the tapered structure design at the bottom of the housing 100, with its cross-section gradually narrowing along the vertical direction. In specific implementations, the inclination angle of the conical section can be set to 30° to 60°. This angle range ensures that impurities slide off smoothly without excessively increasing the equipment height. The conical section can be integrally cast or assembled by welding multiple steel plates. The drain outlet 140 is located at the lowest point of the conical section, and its diameter can be specifically designed according to the discharge volume. It is equipped with a flange or threaded interface for connecting to the drain pipe. As a preferred embodiment, the inner wall of the conical section can be lined with wear-resistant plates, such as high-chromium cast iron, to extend its service life.

[0070] During equipment operation, the conical structure enables deposited impurity particles to automatically collect along the inclined surface under the action of gravity and be discharged from the drain outlet 140.

[0071] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A filtration device, characterized in that, The device includes a housing and a filter module disposed within the housing. The housing has a liquid inlet. The filter module includes a liquid extraction assembly, a plate frame, and multiple filter plates located within the plate frame. The plate frame and the multiple filter plates form a filter chamber. The filter chamber has an upper opening, and a chamber cover is disposed at the upper opening. The chamber cover has a liquid outlet. The liquid extraction assembly is used to extract purified water from the filter chamber through the liquid outlet. The plate frame has a central symmetry plane extending vertically. Two filter plates are symmetrically arranged on both sides of the central symmetry plane. The two filter plates have a set angle with the central symmetry plane so that impurity particles detach from the filter plates due to their own weight.

2. The filtration device according to claim 1, characterized in that, The set tilt angle is greater than or equal to 5° and less than or equal to 45°.

3. The filtration device according to claim 1, characterized in that, The axis of the inlet is parallel to the plane of the filter plate so that the wastewater disturbs the impurity particles on the surface of the filter plate.

4. The filtration device according to claim 2, characterized in that, The filtration module has multiple filtration chambers arranged at intervals, and multiple liquid inlets are arranged at intervals along the horizontal direction, with at least one liquid inlet facing the gap between two adjacent filtration chambers.

5. The filtration device according to claim 1, characterized in that, The liquid extraction assembly includes an outlet pipe and a liquid extraction branch pipe. The liquid extraction branch pipe is located in the filter chamber and is provided with a water passage. The outlet pipe is connected to the liquid extraction branch pipe and extends out from the outlet.

6. The filtration device according to claim 5, characterized in that, The liquid extraction branch pipe extends along the depth direction of the filter chamber, and there are multiple water passage holes arranged at intervals along the axial direction of the liquid extraction branch pipe.

7. The filtration device according to claim 6, characterized in that, The distribution density of the water passages gradually increases in the direction away from the liquid outlet.

8. The filtration device according to claim 5, characterized in that, The liquid extraction branch pipelines are multiple and are arranged at intervals along the width direction of the filter chamber.

9. The filtration device according to claim 1, characterized in that, The housing has a main outlet pipe, and multiple filtration modules are arranged in parallel inside the housing. Each of the multiple filtration modules has a control valve at the end of its pumping assembly and is connected to the main outlet pipe through the control valve. The control valve has an open state and a closed state. When it is in the open state, the filtration module filters the wastewater. When it is in the closed state, the filtration module is in a self-cleaning state.

10. The filtration device according to claim 1, characterized in that, The lower part of the box has a conical section, and a drain outlet is provided at the bottom of the conical section.

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