Sewage filtering device for environmental engineering

Abstract

The utility model discloses a sewage filtering device for environmental engineering, which comprises a filtering tank and a filtering structure, the filtering tank comprises a tank body, an input end cover, an output end cover and the like, and the filtering structure comprises a sealed filtering pipe box and related components. Sewage enters from the input interface, flows into the sealed filtering pipe box through the diversion valve rod, is filtered by the internal fiber layer and the active carbon layer and then flows out from the output interface, and in the filtering process, when the filtering efficiency is reduced due to impurity accumulation of the filtering layer, the water pressure of the input side of the tank body is increased to push the sealed filtering pipe box to move; and meanwhile, the auxiliary flushing interface is communicated with the interior of the tank body through the communicating valve rod, so that double-water-source back flushing is realized. Muddy water generated by backflushing flows into the blow-off pipeline through the diversion valve rod, and is conveyed to the blow-off port by the output screw rod to be discharged. Through the arrangement of the filtering tank and the filtering structure, the backwashing efficiency is remarkably improved, and the time and water resource consumption required by backwashing are reduced.

Description

Technical Field

[0001] This utility model relates to the field of environmental engineering technology, specifically a wastewater filtration device for environmental engineering. Background Technology

[0002] In the current field of environmental engineering, wastewater filtration devices, as a crucial link in the wastewater treatment process, undertake vital purification tasks. However, with their continuous operation over extended periods, a thorny problem gradually emerges: during the continuous filtration process, a large amount of filtered contaminants accumulate inside the device. These contaminants come from a wide range of sources, including suspended particles, colloidal substances, organic impurities, and microbial aggregates from the wastewater. Their continuous accumulation narrows or even completely blocks the originally smooth water flow channels. This blockage directly leads to a sharp decline in filtration efficiency; the flow rate of wastewater passing through the filter layer slows significantly, drastically reducing the amount processed per unit time. At this point, shutdown and cleaning measures are necessary. Currently, the common cleaning method is backwashing, but existing backwashing technology has many limitations and is extremely inefficient. During backwashing, the water or airflow, hindered by the activated carbon and other filter layers, lacks sufficient scouring force, resulting in limited coverage. A thorough backwash requires a significant amount of time and water resources.

[0003] Therefore, this utility model provides a wastewater filtration device for environmental engineering to solve the above problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a wastewater filtration device for environmental engineering, which solves the aforementioned problems.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a wastewater filtration device for environmental engineering, comprising a filter tank, wherein the filter tank is provided with a filtration structure in a sliding seal.

[0006] The filter tank includes a tank body. A main flushing port is integrally provided on the upper side of the tank body. The front and rear ends of the tank body are respectively connected to an input end cover and an output end cover by bolts. The input end cover has a lifting pipe groove inside the cover body. A diversion valve stem is slidably sealed inside the lifting pipe groove. The diversion valve stem has a through valve hole facing the input port and near the lower end. A sewage discharge pipe is provided at the lower part of the tank body shell. An output screw is rotatably provided inside the sewage discharge pipe. An auxiliary flushing port is provided at the upper part of the inside of the output end cover. A hydraulic groove is provided at the lower part of the inside of the output end cover.

[0007] The filtration structure includes a sealed filter tube box. The two ends of the sealed filter tube box are connected to perforated plates by bolts. The side of the sealed filter tube box has an annular backwash channel on the side near the sewage input. The perforated plate at the rear end of the sealed filter tube box is symmetrically fixed with connecting valve stems and hydraulic push rods on its surface, and a flow-stopping plug rod is fixedly installed at the center of the perforated plate surface.

[0008] Preferably, an input interface is integrally provided at the center of the front end face of the input end cover, the path of the lifting pipe groove passes through the input interface, the radius of the lifting pipe groove is larger than the conveying pipe diameter of the input interface, and the upper end of the lifting pipe groove is provided with an interface for inputting and outputting safe liquid.

[0009] Preferably, initially, the valve hole on the upper side is directly connected to the input interface. When the diversion valve rod moves along the riser pipe groove to the lowest point, the valve hole on the lower side connects the inside of the tank with the sewage pipe.

[0010] Preferably, the rear end of the output screw extends through the tank and the output end cover along the pipe diameter and is connected to the drive motor via a coupling. A sewage discharge port connected to the sewage discharge pipeline is provided on the lower side of the tank.

[0011] Preferably, an output interface is integrally provided at the center of the rear end face of the output end cover, and the auxiliary flushing interface is connected to an external clean water supply pipeline.

[0012] Preferably, the rear end of the hydraulic tank is provided with an interface for outputting and inputting safe liquid, and the interface is connected to the interface at the upper end of the lifting pipe tank via a pipeline.

[0013] Preferably, the sealed filter tube box is internally filled with a filter layer, which consists of an activated carbon layer in the middle and fiber layers on the front and back sides.

[0014] Preferably, the annular backwash channel has several L-shaped branches arranged in an array along the axis and extending into the sealed filter box, with the lower end of the branch located close to the filter end face of the activated carbon layer of the filter layer.

[0015] Preferably, the connecting valve stem is slidably and sealed inside the insertion hole that communicates with the lower end of the auxiliary punch interface inside the output end cover, and the connecting valve stem has an S-shaped delivery valve channel inside. Beneficial effects

[0016] This invention provides a wastewater filtration device for environmental engineering. Compared with the prior art, it has the following advantages:

[0017] This wastewater filtration device for environmental engineering utilizes a synergistic design between the filter tank and the filter structure. When impurities accumulate in the filter layer, causing a decrease in filtration efficiency, the increased water pressure on the tank's input side drives the sealed filter tube box to move, connecting the annular backwash channel to the main flushing interface. Simultaneously, the valve stem connects the auxiliary flushing interface to the tank's interior, achieving dual-source backwashing. Furthermore, the L-shaped branch channel, located close to the activated carbon layer's filter end face, enhances the backwashing force and coverage. Compared to traditional backwashing technologies, this significantly improves backwashing efficiency and reduces the time and water consumption required for backwashing. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural perspective view of this utility model;

[0019] Figure 2 This is a cross-sectional view of the structure of this utility model;

[0020] Figure 3 This is a structural disassembly diagram of this utility model;

[0021] Figure 4 This is a cross-sectional view of the filter structure of this utility model.

[0022] In the diagram: 1. Filter tank; 11. Tank body; 111. Main flushing port; 112. Drainage pipe; 113. Output screw; 12. Input end cover; 121. Input port; 122. Lifting pipe groove; 123. Diversion valve stem; 1231. Valve hole; 13. Output end cover; 131. Output port; 132. Auxiliary flushing port; 133. Hydraulic tank; 2. Filter structure; 21. Sealed filter tube box; 211. Filter layer; 2111. Circular backflushing channel; 212. Orifice plate; 2121. Connecting valve stem; 2122. Hydraulic push rod; 2123. Flow cut-off plug rod. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1-4 A wastewater filtration device for environmental engineering, comprising:

[0025] Filter tank 1, the filter tank 1 has a filter structure 2 with an internal sliding seal;

[0026] The filter tank 1 includes a tank body 11. A main flushing port 111 is integrally formed on the upper side of the tank body 11, communicating inwards. The main flushing port 111 is connected to an external clean water source. An input end cover 12 and an output end cover 13 are respectively bolted to the front and rear ends of the tank body 11. An input interface 121 is integrally formed at the center of the front face of the input end cover 12. A riser pipe groove 122 is formed inside the cover, passing through the input interface 121. The radius of the riser pipe groove 122 is larger than the conveying pipe diameter of the input interface 121. An interface for inputting and outputting safe liquid is provided at the upper end of the riser pipe groove 122. A diversion valve stem 123 is slidably sealed inside the riser pipe groove 122. The diversion valve stem 123 faces the input interface 121 and has a through valve hole 1231 near its lower end. Initially, the upper valve hole 1231 is directly opposite and connected to the input interface 121. As the diversion valve stem 123 moves along... When the lifting pipe trough 122 moves to its lowest position, the valve hole 1231 on the lower side indirectly connects the channel opening into the tank body 11 on the lower side of the rear surface of the input end cover 12 with the sewage pipe 112. The sewage pipe 112 is located inside the lower part of the tank shell of the tank body 11, and an output screw 113 is rotatably installed inside the sewage pipe 112. The rear end of the output screw 113 extends along the pipe diameter, passes through the tank body 11 and the output end cover 13, and is connected to the drive motor through a coupling. The tank body 11 A sewage outlet is provided on the lower side of the side, which is connected to the sewage pipe 112. An output interface 131 is integrally provided at the center of the rear end face of the output end cover 13. An auxiliary flushing interface 132 is vertically provided on the upper inside of the output end cover 13, and the auxiliary flushing interface 132 is connected to the external clean water supply pipe. A hydraulic groove 133 is horizontally provided on the lower inside of the output end cover 13, which opens into the tank 11. An interface for outputting and inputting safe liquid is provided at the rear end of the hydraulic groove 133.

[0027] The filter structure 2 includes a sealed filter tube box 21. Sealing strips are fitted onto the outer surface of the sealed filter tube box 21 near both ends, and perforated plates 212 are bolted to both ends. A filter layer 211 is filled and positioned inside the sealed filter tube box 21, and the filter layer 211 consists of an activated carbon layer in the middle and fiber layers on the front and rear sides. An annular backwash channel 2111 is formed on the side of the sealed filter tube box 21 near the sewage inlet. The annular backwash channel 2111 has several L-shaped supports arranged in an axial array and penetrating into the sealed filter tube box 21. The lower end of the branch channel is located near the filter end face of the activated carbon layer of the filter layer 211. The surface of the perforated plate 212 at the rear end of the sealed filter tube box 21 is symmetrically fixed with a connecting valve stem 2121 and a hydraulic push rod 2122 along the axis. A flow-stopping plug rod 2123 is fixedly installed at the center of the surface of the perforated plate 212, and the flow-stopping plug rod 2123 is directly opposite the output interface 131. The connecting valve stem 2121 is slidably and sealed in the insertion hole opened inside the output end cover 13, which communicates with the lower end of the auxiliary flushing interface 132. An S-shaped conveying valve channel is opened inside the connecting valve stem 2121.

[0028] During operation, wastewater enters through the input port 121. The valve hole 1231 on the upper side of the diversion valve stem 123 connects to the input port 121, and the wastewater flows into the sealed filter tube box 21. After being filtered by the filter layer 211, the purified water flows out from the output port 131. As filtration proceeds, impurities increase in the filter layer 211, and the filtration efficiency decreases. The water pressure on the input side of the tank 11 increases, pushing the sealed filter tube box 21 to move towards the output side. At this time, the annular backwash channel 2111 moves to the position of the main flush port 111, and clean water rushes in, backwashing the activated carbon layer filter end face through the L-shaped branch channel. Simultaneously, the movement of the sealed filter tube box 21 drives the connecting valve stem 2121, the hydraulic push rod 2122, and the flow-stopping plug 2122. 123, the connecting valve stem 2121 connects the auxiliary flushing port 132 with the inside of the tank 11. Clean water from the external water source flushes the filter layer 211 from the output side to the input side. The hydraulic push rod 2122 pushes the safety liquid in the hydraulic tank 133, causing it to enter the riser pipe 122, pushing the diversion valve stem 123 down to block the input port 121, connecting the tank 11 with the sewage pipe 112. The backflushing mud water flows into the sewage pipe 112 and is transported to the sewage outlet by the output screw 113. The flow-stopping plug rod 2123 blocks the output port 131 to prevent clean water from flowing out. Once the water discharged from the sewage outlet becomes clean, the rear end of the orifice plate 212 is pushed to reset the filter structure 2, and the filtration of sewage can continue.

[0029] In summary, through the coordinated design of the filter tank 1 and the filter structure 2, when the filtration efficiency decreases due to the accumulation of impurities in the filter layer 211, the increased water pressure on the input side of the tank 11 pushes the sealed filter tube box 21 to move, connecting the annular backwash channel 2111 with the main flushing interface 111. At the same time, the valve stem 2121 connects the auxiliary flushing interface 132 with the inside of the tank 11, realizing dual-source backwashing. Furthermore, the L-shaped branch channel is close to the filter end face of the activated carbon layer, enhancing the backwashing force and coverage. Compared with traditional backwashing technology, this significantly improves backwashing efficiency and reduces the time and water consumption required for backwashing.

[0030] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0031] Working Principle: During operation, wastewater first enters through the input port 121. Initially, the valve hole 1231 on the upper side of the diversion valve stem 123 is directly connected to the input port 121. The wastewater flows through the valve hole 1231 into the sealed filter tube box 21 inside the tank 11. After being filtered by the filter layer 211, large particulate impurities, organic compounds, heavy metal ions, and other pollutants in the wastewater are adsorbed and removed. The purified water flows out from the output port 131. As filtration continues, a large amount of impurities gradually accumulate on the filter layer 211, causing a decrease in filtration efficiency. Then, due to the blockage effect of impurities, the water pressure on the input side inside the tank 11 increases. The wastewater then pushes the sealed filter tube box 21 towards the output side of the tank 11. As the box 21 moves, the annular backwash channel 2111 on the outer side of the sealed filter tube box 21 gradually moves to the position of the main flushing port 111, realizing the connection between the main flushing port 111 and the inside of the tank 11. Then, clean water will flow into the annular backwash channel 2111 and spray out from the lower port through the L-shaped branch, backwashing the activated carbon layer filter end face of the filter layer 211. Since the lower port of the L-shaped branch is close to the activated carbon layer filter end face, it can effectively improve the backwashing force and effect. At the same time, the movement of the sealed filter tube box 21 will synchronously drive the connecting valve stem 2121, the hydraulic push rod 2122, and the flow-stopping plug rod 2123. Among them, the connecting valve stem 2121 will move along the insertion hole opened in the output end cover 13, and the internal S-shaped plug will move. The conveying valve channel is directly connected to the auxiliary flushing port 132. With the assistance of the connecting valve stem 2121, the auxiliary flushing port 132 can indirectly connect to the inside of the tank 11. Then, the external water source connected to the auxiliary flushing port 132 will input clean water into the inside of the tank 11 and backwash the filter layer 211 from the output side to the input side. Meanwhile, the hydraulic push rod 2122 will move along the hydraulic groove 133 and push the safety liquid stored in the hydraulic groove 133, so that the safety liquid enters the inside of the riser pipe groove 122 along the pipeline and pushes the diversion valve stem 123 to move downward along the riser pipe groove 122. As the diversion valve stem 123 moves downward, it will gradually block the input channel of the input port 121. The valve hole 1231 on the lower side connects the lower part of the tank 11 to the front end of the sewage pipe 112. The muddy water generated by backflushing flows into the sewage pipe 112 through the valve hole 1231. The sewage entering the sewage pipe 112 is spirally conveyed by the output screw 113 driven by the motor, and then transported to the designated treatment location through the sewage outlet located on the lower side of the tank 11. The flow-stopping rod 2123 is inserted into the output interface 131 to seal the output interface 131 and prevent the clean water from backflushing from flowing out of the output interface 131 until the water discharged through the sewage outlet is clean. Then, by increasing the water pressure input through the auxiliary flushing interface 132, the large water flow pushes the filter structure 2 to move back to its original position.Simultaneously, the rear end of the connecting valve stem 2121 can be pushed for auxiliary (an electric actuator connected to the connecting valve stem 2121 can be installed on the back of the output end cover 13) to reset the filter structure 2 inside the tank 11, and then the filtration of sewage can continue.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sewage filtering device for environmental engineering, characterized in that, include: The filter tank (1) has a filter structure (2) with an internal sliding seal. The filter tank (1) includes a tank body (11). A main flushing port (111) is integrally provided on the upper side of the tank body (11). The front and rear ends of the tank body (11) are respectively connected by bolts to an input end cover (12) and an output end cover (13). The input end cover (12) has a lifting pipe groove (122) inside the cover body. A diversion valve stem (123) is provided inside the lifting pipe groove (122) with a sliding seal. The diversion valve stem (123) is directly opposite the input port (121) and has a through valve hole (1231) near the lower end. A sewage pipe (112) is provided at the lower part of the tank shell of the tank body (11). An output screw (113) is rotatably provided inside the sewage pipe (112). An auxiliary flushing port (132) is provided at the upper part of the inside of the output end cover (13). A hydraulic groove (133) is provided at the lower part of the inside of the output end cover (13). The filter structure (2) includes a sealed filter tube box (21). The two ends of the sealed filter tube box (21) are connected by bolts to perforated plates (212). The side of the sealed filter tube box (21) has an annular backwash channel (2111) on the side near the sewage input. The surface of the perforated plate (212) located at the rear end of the sealed filter tube box (21) is symmetrically fixed with a connecting valve stem (2121) and a hydraulic push rod (2122) along the axis. A flow-cutting plug rod (2123) is fixedly installed at the center of the surface of the perforated plate (212).

2. A sewage filtering device for environmental engineering according to claim 1, characterized in that: An input interface (121) is integrally provided at the center of the front end face of the input end cap (12). The path of the lifting pipe groove (122) passes through the input interface (121), and the radius of the lifting pipe groove (122) is greater than the conveying pipe diameter of the input interface (121). An interface for inputting and outputting safe liquid is provided at the upper end of the lifting pipe groove (122).

3. A sewage filtering device for environmental engineering according to claim 1, characterized in that: Initially, the valve hole (1231) on the upper side is directly connected to the input interface (121). When the diversion valve rod (123) moves to the bottom along the riser pipe groove (122), the valve hole (1231) on the lower side connects the inside of the tank (11) with the sewage pipe (112).

4. The sewage filtering device for environmental engineering according to claim 1, characterized in that: The rear end of the output screw (113) extends through the pipe diameter, passes through the tank (11) and the output end cover (13), and is connected to the drive motor through a coupling. A sewage outlet is provided on the lower side of the tank (11) to communicate with the sewage pipe (112).

5. A sewage filtering device for environmental engineering according to claim 1, characterized in that: The output end cap (13) has an integrated output interface (131) at the center of its rear end face, and the auxiliary flushing interface (132) is connected to an external clean water supply pipeline.

6. A sewage filtering device for environmental engineering according to claim 1, characterized in that: The hydraulic tank (133) is provided with an interface for outputting and inputting safe liquid at its rear end, and the interface is connected to the interface at the upper end of the lifting pipe tank (122) via a pipeline.

7. A sewage filtering device for environmental engineering according to claim 1, characterized in that: The sealed filter tube box (21) is internally filled with a filter layer (211), which consists of an activated carbon layer in the middle and fiber layers on the front and back sides.

8. A sewage filtering device for environmental engineering according to claim 1, characterized in that: The annular backwash channel (2111) has several L-shaped branches arranged along the axis and extending into the sealed filter box (21), with the lower end of the branch located close to the filter end face of the activated carbon layer of the filter layer (211).

9. A sewage filtering device for environmental engineering according to claim 1, characterized in that: The connecting valve stem (2121) is slidably and sealed inside the output end cover (13) and connected to the lower end of the auxiliary punch interface (132). The connecting valve stem (2121) has an S-shaped delivery valve channel inside.

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