Disc type filtering device for sewage

Abstract

The utility model relates to the technical field of heating and water supply systems, in particular to a disc type filtering device for sewage, which is used for effectively filtering solid particles and other impurities in the sewage and ensuring the fineness and the efficiency of filtering. Purified water enters the purified water area from the water outlet end of the central pipe on the partition plate, so that the water separation and purification process is effectively realized. The filtering area and the water purifying area are separated from each other, so that filtered solid impurities are effectively collected. And the water inlet overflow groove is beneficial for controlling the flow in the water inlet process, so that the impact on the operation of the filter caused by overhigh flow speed and the reflux phenomenon in the operation process are prevented. The structure of the annular hollow filter disc enhances the overall stability and strength and has bearing capacity and pressure resistance, the microporous fiber filter cloth has efficient filtering performance, particles and pollutants with small sizes can be effectively captured, the high quality of effluent liquid is ensured, the impurity removal assembly regularly cleans and maintains the filter device, and long-term efficient operation of the filter device is kept.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage filtration, in particular to a disc-type filtering device for sewage. Background Art

[0002] Some existing filters, such as filter presses or cartridge filters, have complex structures or operating procedures, which make maintenance and cleaning more cumbersome. The equipment requires a large installation space and is not suitable for places with limited space. Some require a large energy input to operate, with high operating costs and energy consumption. The filtration accuracy and efficiency are low, and it is impossible to filter impurities of various sizes. In some cases, it is impossible to filter tiny solid particles. Some special-purpose filters require complex operating steps and technical support, and require special customization. They cannot be used in large quantities in industrial production. Moreover, after long-term use, the filter screen cannot be replaced and reused, and can only be scrapped together with the entire equipment. Summary of the invention

[0003] The technical problem to be solved by the utility model is to provide a disk filter device for sewage which has a compact structure and adopts multiple layers of fine filter screens to effectively filter smaller particles and solid particles in view of the deficiencies of the prior art.

[0004] The technical problem to be solved by the utility model is achieved through the following technical solutions: a disc filter device for sewage, including a filter box, one end of the filter box is set as a water inlet end, the water inlet end is provided with a water inlet overflow groove, the other end of the filter box is provided with a water outlet end, the water outlet end is provided with a partition, the partition separates the filter box into a filter area and a clean water area, the filter area is provided with a disc filter device along the water inlet end to the water outlet end, the disc filter device includes a central tube with one end closed, the water outlet end of the central tube is arranged on the partition and connected with the clean water area, the central tube is evenly provided with a plurality of annular hollow filter discs along the axial direction, each annular hollow filter disc surface is covered with filter cloth, can effectively filter solid particles and other impurities in sewage, ensure the fineness and efficiency of filtration. The annular hollow filter disc is connected with the central tube to form a filtration space, the partition is provided with a filter vertical plate and a filter bottom plate near the filter area, the filter vertical plate, the filter bottom plate, the partition and the side wall of the filter box form an impurity filter cavity, and the filter bottom plate is provided with an impurity discharge component. The clean water enters the clean water area from the outlet of the central pipe on the partition, effectively realizing the water separation and purification process. The filtration area and the clean water area are separated from each other, effectively collecting the filtered solid impurities so that they no longer affect the water quality of the clean water area. The impurity removal component regularly cleans and maintains the filter device to maintain its long-term and efficient operation.

[0005] As a further solution of the utility model, the water inlet overflow trough includes a water inlet vertical baffle and a water inlet horizontal baffle arranged perpendicular to each other, the water inlet vertical baffle and the water inlet horizontal baffle and the inner wall of the filter box form a water inlet overflow space, the top surface of the water inlet vertical baffle is lower than the upper plane of the filter box, and a water inlet is provided on the filter box body wall facing the water inlet vertical baffle, and a water inlet pipe is provided at the water inlet, and a water inlet flange is provided at the end of the water inlet pipe. It helps to control the flow rate during the water inlet process and prevent excessive flow rate from causing impact on the filter operation. At the same time, it effectively manages the water inlet flow direction and ensures the stability of operation. It effectively prevents the backflow phenomenon during operation and minimizes unnecessary losses and environmental impacts caused by overflow or leakage.

[0006] As a further solution of the utility model, the water purification area includes the side wall, bottom plate and space surrounded by the partition at the water outlet of the filter box, a vertical overflow plate is arranged between the partition and the side wall, a temporary storage cavity is formed between the partition and the overflow plate, an overflow cavity is formed between the overflow plate and the side wall, the top surface of the overflow plate is lower than the top surface of the partition and the upper plane of the filter box, a water outlet is arranged on the side wall of the filter box facing the overflow plate, a water outlet pipe is arranged at the water outlet, and a water outlet flange is arranged at the end of the water outlet pipe. The effective discharge and centralized management of the purified water is ensured, and the distribution and movement path of the water flow are effectively optimized, so as to ensure that the water quality reaches the expected purification effect after filtration and treatment.

[0007] As a further solution of the utility model, the annular hollow filter disc is a regular polygonal membrane frame, which is composed of two regular polygons parallel to each other and with corresponding vertices. A fixed-length distance rod is provided between the vertices of the two regular polygons, and the side body of each regular polygon is composed of rigid rods overlapped in sequence, which enhances the overall stability and strength, and has bearing capacity and pressure resistance. A connecting ring is provided in the center of the two regular polygons, and a support rod is provided between the connecting ring and a circle of vertices. An annular incision is provided on the body of the central tube facing the regular polygonal membrane frame, and the connecting ring is fixedly connected to the adjacent annular incisions on the central tube. The fixed installation method of the annular incision and the connecting ring ensures the stability and reliability of the filter disc during operation. The precise installation between each other ensures the coordination between the various parts of the filter disc and ensures long-term efficient operation.

[0008] As a further solution of the utility model, the filter cloth is stretched on the surface of the regular polygonal membrane frame, and the filter cloth is a microporous fiber filter cloth of 5-15μm, which ensures efficient filtering performance, can effectively capture particles and pollutants of smaller size, and ensure the high quality of the outflowing liquid. The thickness is 2-3mm, which increases its durability and structural stability. This design ensures that the filter cloth is not easily deformed or damaged during use, and prolongs the service life of the filter cloth. The filter cloth is stretched on the surface of the regular polygonal membrane frame and is closely combined with it, which helps to optimize the distribution and flow of the fluid. In this way, the skewed flow or pressure imbalance of the fluid on the filter cloth can be avoided, thereby improving the filtering efficiency and stability. The filter cloth is easier to clean and replace, reducing downtime and maintenance costs.

[0009] As a further solution of the utility model, the filter bottom plate is provided with a sewage outlet, the sewage outlet assembly is arranged at the sewage outlet, the sewage outlet assembly includes a sewage outlet pipe arranged at the sewage outlet, the sewage outlet pipe includes a vertical pipe, a curved pipe and a horizontal pipe connected in sequence, the horizontal pipe extends outward to the outside of the filter box, and a sewage outlet flange is arranged at the mouth of the horizontal pipe. Without affecting the normal operation of the filter, the dirt is effectively guided to the outside of the filter box, ensuring that the dirt is smoothly guided and discharged, and the stability and controllability of the dirt discharge.

[0010] As a further solution of the utility model, the side wall of the filter box is provided with a plurality of drainage ports, each of which is provided with a drainage branch pipe, which is connected to a drainage main pipe in parallel, a drainage valve and a drainage pump are provided on the drainage main pipe, and the drainage main pipe is connected to an external collection system.

[0011] The beneficial effects of the utility model are:

[0012] The utility model provides a disc filter device for sewage, including a filter box, one end of the filter box is set as a water inlet end, the water inlet end is provided with a water inlet overflow groove, the other end of the filter box is provided with a water outlet end, the water outlet end is provided with a partition, the partition separates the filter box into a filter area and a clean water area, and the filter area is provided with a disc filter device along the water inlet end toward the water outlet end, which can effectively filter solid particles and other impurities in the sewage, ensuring the fineness and efficiency of the filtration. Clean water enters the clean water area from the water outlet end of the central pipe on the partition, effectively realizing the water quality separation and purification process. The filter area and the clean water area are separated from each other, and the filtered solid impurities are effectively collected so that they no longer affect the water quality of the clean water area. The impurity removal component regularly cleans and maintains the filter device to keep it running efficiently for a long time.

[0013] The water inlet overflow groove helps to control the flow during the water inlet process, preventing excessive flow rate from impacting the filter operation. At the same time, it effectively manages the water inlet flow direction and ensures the stability of operation. It effectively prevents backflow during operation and minimizes unnecessary losses and environmental impacts caused by overflow or leakage.

[0014] An overflow plate is provided at the water outlet of the filter box in the water purification area. A temporary storage cavity is formed between the partition and the overflow plate, and an overflow cavity is formed between the overflow plate and the side wall, which ensures the effective discharge and centralized management of the purified water, and effectively optimizes the distribution and movement path of the water flow, thereby ensuring that the water quality achieves the expected purification effect after filtration and treatment.

[0015] The structure of the annular hollow filter disc enhances the overall stability and strength, and has load-bearing capacity and pressure resistance. The fixed installation method of the annular cutout and the connecting ring ensures the stability and reliability of the filter disc during operation. The precise installation between each other ensures the coordination between the various parts of the filter disc, ensuring long-term efficient operation.

[0016] The microporous fiber filter cloth has high filtration performance and can effectively capture small particles and pollutants to ensure high quality of the outflow liquid. The thickness of the filter cloth increases its durability and structural stability. The filter cloth is not easy to deform or damage during use, which prolongs the service life of the filter cloth. The filter cloth is stretched on the surface of the regular polygonal membrane frame and is closely integrated with it, which helps to optimize the distribution and flow of the fluid. This can avoid skewed flow or pressure imbalance of the fluid on the filter cloth, thereby improving filtration efficiency and stability. The filter cloth is easier to clean and replace, reducing downtime and maintenance costs.

[0017] The impurity removal component effectively guides the dirt to the outside of the filter box without affecting the normal operation of the filter, ensuring that the dirt is smoothly guided and discharged and the stability and controllability of the dirt discharge. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The overall structure of the utility model is shown in FIG. Figure 1 ;

[0019] Figure 2 The overall structure of the utility model is shown in FIG. Figure 2 ;

[0020] Figure 3 The overall structure of the utility model is shown in FIG. Figure 3 ;

[0021] Figure 4 The overall structure of the utility model is shown in FIG. Figure 4 ;

[0022] Figure 5 This is a component diagram of the disc filter device of the utility model;

[0023] Figure 6 It is a schematic diagram of the annular hollow filter disc of the utility model.

[0024] Among them: 1-filter box, 2-clean water area, 201-overflow plate, 211-temporary storage chamber, 212-overflow chamber, 202-outlet flange, 203-outlet pipe, 3-partition, 4-filter bottom plate, 401-drain flange, 402-drain pipe, 403-filter vertical plate, 5-filter area, 6-inlet overflow trough, 601-inlet flange, 602-inlet pipe, 603-inlet horizontal baffle, 604-inlet vertical baffle, 7-drainage port, 701-drainage branch pipe, 702-drainage main pipe, 703-drainage pump, 704-drainage valve, 8-disc filter device, 801-annular hollow filter disc, 811-distance rod, 812-support rod, 813-connecting ring 802-center pipe, 803-filter cloth. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below through embodiments and in combination with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0026] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present utility model, it should be understood that the orientation or position relationship indicated by the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model.

[0027] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0028] Example 1

[0029] like Figures 1 to 6As shown, a disc filter device for sewage includes a filter box 1, one end of the filter box is set as a water inlet end, the water inlet end is provided with a water inlet overflow groove 6, the water inlet overflow groove 6 includes a water inlet vertical baffle 604 and a water inlet horizontal baffle 603 arranged perpendicular to each other, the water inlet vertical baffle and the water inlet horizontal baffle and the inner wall of the filter box body form a water inlet overflow space, the top surface of the water inlet vertical baffle is lower than the upper plane of the filter box, a water inlet is provided on the filter box body wall opposite to the water inlet vertical baffle, a water inlet is provided at the water inlet, a water inlet pipe 602 is provided at the water inlet, and a water inlet flange 601 is provided at the end of the water inlet pipe.

[0030] The sewage flows along the water inlet flange and the water inlet pipe, and enters the water inlet overflow trough through the water inlet. The sewage first falls onto the water inlet horizontal baffle of the water inlet overflow trough. The water level continues to rise, overflows along the upper edge of the water inlet vertical baffle, and falls into the filter box. The water level in the filter box continues to rise, but the sewage in the filter box will not flow back to the water inlet overflow trough. The water level in the filter box is maintained between the center pipe and the overflow water level.

[0031] The other end of the filter box is provided with a water outlet, and a partition 3 is provided at the water outlet. The partition divides the filter box into a filter area 5 and a clean water area 2. A disc filter device 8 is provided in the filter area along the water inlet to the water outlet. The disc filter device includes a central tube 802 with one end closed, and a plurality of annular hollow filter discs 801 are evenly distributed along the axial direction of the central tube. The surface of each annular hollow filter disc is covered with a filter cloth 803. The annular hollow filter disc 801 is a regular polygonal membrane frame, which is composed of two regular polygons parallel to each other and correspondingly arranged at the vertices. A fixed-length fixed-distance rod 811 is provided between the vertices of the two regular polygons. The side body of each regular polygon is composed of rigid rods overlapped in sequence, and has bearing capacity and pressure resistance. The filter cloth is stretched on the surface of the regular polygonal membrane frame. The filter cloth is a 10μm microporous fiber filter cloth with a thickness of 2.5mm. The sewage in the filter box passes through the filter cloth, and the filter cloth filters particles and pollutants. The clean water after filtration enters the annular hollow filter disc.

[0032] A connecting ring 813 is provided at the center of the two regular polygons, and a support rod 812 is provided between the connecting ring and the vertices of one circle. An annular cutout is provided on the central tube body opposite to the regular polygon membrane frame, and the connecting ring is fixedly connected to the adjacent annular cutouts on the central tube. The annular hollow filter disc is connected to the central tube to form a filtering space. The clean water entering the annular hollow filter disc flows into the central tube, and the outlet end of the central tube 802 is provided on the partition and connected to the clean water area, and the clean water enters the clean water area along the central tube.

[0033] The clean water area 2 includes the side wall, bottom plate and space surrounded by the partition at the water outlet of the filter box. A vertical overflow plate 201 is provided between the partition and the side wall. A temporary storage chamber 211 is formed between the partition and the overflow plate. An overflow chamber 212 is formed between the overflow plate and the side wall. The top surface of the overflow plate is lower than the top surface of the partition and the upper plane of the filter box. A water outlet is provided on the side wall of the filter box opposite to the overflow plate. A water outlet pipe 203 is provided at the water outlet, and a water outlet flange 202 is provided at the end of the water outlet pipe. Clean water first enters the temporary storage chamber, and continuously accumulates in the temporary storage chamber to form a buffer and sedimentation space until the water level exceeds the overflow plate, falls into the overflow chamber along the overflow plate, and continuously accumulates in the overflow chamber. When the water level rises to the height of the water outlet, it is output along the water outlet pipe.

[0034] Example 2

[0035] Part of the impurities in the filter box 1 are deposited at the bottom of the filter box, part is suspended in the sewage, and part of the light impurities float on the surface of the sewage.

[0036] The partition 3 is provided with a vertical filter plate 403 and a filter bottom plate 4 on one side close to the filter area. The vertical filter plate, the filter bottom plate, the partition and the side wall of the filter box form an impurity filter chamber. The filter bottom plate is provided with a sewage outlet, and the filter bottom plate is provided with an impurity discharge assembly. The impurity discharge assembly is arranged at the sewage outlet, and the impurity discharge assembly includes a sewage discharge pipe 402 arranged at the sewage outlet. The sewage discharge pipe includes a vertical pipe, a curved pipe and a horizontal pipe connected in sequence. The horizontal pipe extends to the outside of the filter box, and a sewage discharge flange 401 is provided at the mouth of the horizontal pipe. As the sewage in the filter area is continuously filtered, the impurity concentration becomes higher and higher, and some lighter impurities are suspended on the surface of the sewage. When the sewage water level exceeds the top surface of the vertical filter plate, the impurities floating on the sewage surface flow into the impurity filter chamber and are then discharged through the sewage discharge pipe.

[0037] Example 3

[0038] The sewage in the filter box is continuously injected and filtered, the liquid level of the sewage rises, and the impurity content of the sewage becomes higher and higher. The sewage needs to be discharged, re-injected and filtered again.

[0039] The filter box side wall is provided with three drainage ports 7, each of which is provided with a drainage branch pipe 701, which is connected in parallel with a drainage main pipe 702, on which a drainage valve 704 and a drainage pump 703 are provided, and the drainage main pipe is connected to an external collection system.

[0040] Open the drain valve 704 and the drain pump 703 to discharge the sewage with high impurity concentration in the filter box along the drain branch pipe, then merge into the drain main pipe, and finally be collected by the external collection system.

[0041] The technical features of the above embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0042] The above-mentioned embodiments only express several implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A disc filter device for sewage, characterized in that: The invention comprises a filter box (1), wherein one end of the filter box is set as a water inlet end, the water inlet end is provided with a water inlet overflow groove (6), the other end of the filter box is provided with a water outlet end, the water outlet end is provided with a partition (3), the partition divides the filter box into a filter area (5) and a clean water area (2), the filter area is provided with a disc filter device (8) along the direction from the water inlet end to the water outlet end, the disc filter device comprises a central tube (802) with one end closed, the water outlet end of the central tube is arranged on the partition and is connected with the clean water area, a plurality of annular hollow filter discs (801) are evenly distributed along the axial direction of the central tube, the surface of each annular hollow filter disc is covered with a filter cloth (803), the annular hollow filter disc and the central tube are connected to form a filter space, a side of the partition close to the filter area is provided with a debris filter vertical plate (403) and a debris filter bottom plate (4), the debris filter vertical plate, the debris filter bottom plate, the partition and the side wall of the filter box form an impurity filter cavity, and the debris filter bottom plate (4) is provided with an impurity discharge component.

2. The disc filter device for sewage according to claim 1, characterized in that: The water inlet overflow trough (6) comprises a water inlet vertical baffle (604) and a water inlet horizontal baffle (603) which are arranged perpendicular to each other. The water inlet vertical baffle, the water inlet horizontal baffle and the inner wall of the filter box form a water inlet overflow space. The top surface of the water inlet vertical baffle is lower than the upper plane of the filter box. A water inlet is provided on the filter box wall opposite to the water inlet vertical baffle. A water inlet pipe (602) is provided at the water inlet. A water inlet flange (601) is provided at the end of the water inlet pipe.

3. The disc filter device for sewage according to claim 2, characterized in that: The water purification area includes a space surrounded by the side wall, the bottom plate and the partition (3) at the water outlet end of the filter box, a vertically arranged overflow plate (201) is provided between the partition and the side wall, a temporary storage cavity (211) is formed between the partition and the overflow plate, and an overflow cavity (212) is formed between the overflow plate and the side wall. The top surface of the overflow plate is lower than the top surface of the partition and the upper plane of the filter box. A water outlet is provided on the side wall of the filter box directly facing the overflow plate, a water outlet pipe (203) is provided at the water outlet, and a water outlet flange (202) is provided at the end of the water outlet pipe.

4. The disc filter device for sewage according to claim 2, characterized in that: The annular hollow filter disc (801) is a regular polygonal membrane frame, which is composed of two regular polygons parallel to each other and with corresponding vertices. A fixed-length distance rod (811) is provided between the vertices of the two regular polygons. The side body of each regular polygon is composed of rigid rods overlapped in sequence. A connecting ring (813) is provided in the center of the two regular polygons. A supporting rod (812) is provided between the connecting ring and a circle of vertices. An annular incision is provided on the central tube body facing the regular polygonal membrane frame, and the connecting ring is fixedly connected to the adjacent annular incisions on the central tube.

5. The disc filter device for sewage according to claim 4, characterized in that: The filter cloth (803) is stretched on the surface of the regular polygonal membrane frame. The filter cloth is a microporous fiber filter cloth with a thickness of 5-15 μm and a thickness of 2-3 mm.

6. The disc filter device for sewage according to claim 3, characterized in that: The filter bottom plate (4) is provided with a sewage outlet, and a sewage discharge component is arranged at the sewage outlet. The sewage discharge component includes a sewage discharge pipe (402) arranged at the sewage discharge outlet. The sewage discharge pipe includes a vertical pipe, a curved pipe and a horizontal pipe connected in sequence. The horizontal pipe extends outside the filter box, and a sewage discharge flange (401) is provided at the pipe mouth of the horizontal pipe.

7. The disc filter device for sewage according to claim 1, characterized in that: The filter box side wall is provided with a plurality of drainage ports (7), each drainage port is provided with a drainage branch pipe (701), the drainage branch pipes are connected in parallel to a drainage main pipe (702), the drainage main pipe is provided with a drainage valve (704) and a drainage pump (703), and the drainage main pipe is connected to an external collection system.

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