Filtering device for municipal water supply and drainage

Abstract

The utility model discloses a filter device for municipal water supply and drainage, including drainage canal and collection box. The utility model discloses when needing to clean the garbage inside collection box, can expose the drainage canal top space by opening the grate to come out, at this moment, because lose the extrusion of grate, therefore the bottom multiple group spring can carry out deformation reset, and then drive the moving block and the moving plate connected therewith to move stably, at this moment, the moving block and the moving plate can synchronize to apply a moving up thrust to the collection box, and then make the collection box can move up and expose in the top of drainage canal, at this moment, personnel can through the dustpan and the broom to clean the garbage in the inside and go out fast, need to return to the original position in the sequel, only need to place the grate to the collection box again, the whole operation process does not need personnel to operate the collection box additionally, can reduce the labor intensity and reduce the operation pollution, has the advantages such as labor saving, convenient operation, personnel pollution is few.

Description

Technical Field

[0001] This utility model relates to the field of municipal water supply and drainage engineering technology, and more specifically, to a filtration device for municipal water supply and drainage. Background Technology

[0002] Municipal water supply and drainage engineering refers to the rainwater and sewage pipes under municipal roads, commonly known as "sewage pipes." In engineering, they are usually called municipal drainage pipes. Because drainage pipes take into account the separation of rainwater and sewage, rainwater is generally discharged into nearby rivers, while sewage is discharged into sewage treatment plants. Therefore, municipal drainage pipes include both rainwater and sewage pipes. When rainwater enters the rainwater pipes, it first enters the drainage ditch connected to the ground, and then enters the central rainwater pipe from the drainage ditch. In order to prevent rainwater on the ground from carrying impurities into the central rainwater pipe, a filter device is usually installed in the drainage ditch.

[0003] The existing publicly available technology, application number CN202323609233.5, describes a municipal water supply and drainage filtration device. Through the interaction between the first force spring, the second force spring, and the connecting plate, it can push the rectangular plate upward while releasing the limiting plate from its position. This allows the impurities accumulated on the upper surface of the rectangular plate to be pushed out, avoiding the inconvenience for workers to clean the internal impurities. However, this device is also prone to bacterial infection, which could negatively impact the physical and mental health of workers.

[0004] However, the aforementioned patent still has certain drawbacks in its use: it requires personnel to step on the limiting plates on both sides to move the lifting mechanism upwards. However, the overall weight of the lifting mechanism increases after it is loaded with garbage, requiring considerable effort from personnel to lift it. This makes the operation time-consuming and laborious. In addition, if the drainage ditch is too large, it is easy for personnel to be unable to effectively operate the limiting plates on both sides, thus preventing the lifting structure from moving upwards smoothly and affecting subsequent garbage disposal operations. Overall, the usage effect is not ideal, and there is room for improvement.

[0005] No effective solutions have yet been proposed to address the problems in the relevant technologies. Utility Model Content

[0006] (a) Technical problems to be solved In view of the shortcomings of the prior art, this utility model provides a filtration device for municipal water supply and drainage, which has the advantages of labor-saving impurity removal, convenient operation and low personnel pollution, thereby solving the problems in the background art.

[0007] (II) Technical Solution To achieve the aforementioned advantages of labor-saving impurity removal, convenient operation, and minimal personnel contamination, the specific technical solution adopted by this utility model is as follows: A municipal water supply and drainage filtration device includes a drainage channel and a collection box. A support plate is fixedly installed at the top of the drainage channel. The top of the support plate contacts the collection box. Connecting blocks are symmetrically welded to both sides of the collection box. Moving blocks are symmetrically welded to both sides of the bottom of the collection box. One end of the moving block passes through one side of the support plate and is slidably connected to the inside of the support block. The bottom of the support block is installed on the inner wall of the drainage channel via a fixing plate. A first spring is installed at the bottom of the moving block inside the support block. A moving cavity is formed on the outer periphery of one side of the connecting block on the inner wall of the drainage channel. A receiving groove is formed below the moving cavity. A moving plate is slidably connected inside the receiving groove. One end of the moving plate passes through one side of the moving cavity and is fixed to the connecting block. A second spring is installed at the bottom of the moving plate inside the receiving groove.

[0008] Furthermore, a grate plate is abutted at the top of the collection box.

[0009] Furthermore, several sets of filter holes are evenly distributed on the bottom surface of the inside of the collection box.

[0010] Furthermore, the height of the sidewall of the collection box is greater than the height of the moving cavity.

[0011] Furthermore, a water guide plate is installed between the bottom of the bearing plate and the top of the support block.

[0012] Furthermore, a slot is provided at the top of the support plate for the movement of the movable block.

[0013] Furthermore, the bottom of the collection box is provided with a ramp.

[0014] Furthermore, the surface of the water guide plate is provided with a slope.

[0015] (III) Beneficial Effects Compared with the prior art, this utility model provides a filtration device for municipal water supply and drainage, which has the following beneficial effects: When cleaning the garbage inside the collection box, this utility model can expose the top space of the drainage ditch by opening the grate. With the grate no longer pressing down, multiple springs at the bottom can deform and reset, causing the connected moving block and moving plate to move stably upwards. Simultaneously, the moving block and moving plate apply an upward thrust to the collection box, exposing it to the top of the drainage ditch. Personnel can then quickly remove the garbage using a dustpan and broom. To return it to its original position, simply place the grate back on the collection box. Gravity will naturally return the box to its original position, and the springs will deform and accumulate power for easy opening. The entire operation requires no additional personnel to operate the collection box, reducing labor intensity and pollution. It offers advantages such as labor-saving cleaning, convenient operation, and minimal personnel contamination. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of the municipal water supply and drainage filtration device proposed in this utility model; Figure 2 This is a schematic diagram of the internal structure of the collection box of this utility model; Figure 3 This is a schematic diagram of the water guide plate of this utility model; Figure 4 This is a cross-sectional view showing the connection between the support block and the movable block of this utility model.

[0018] In the picture: 1. Drainage channel; 2. Fixed plate; 3. Support block; 4. First spring; 5. Moving block; 6. Water guide plate; 7. Bearing plate; 8. Grate; 9. Filter hole; 10. Collection box; 11. Moving cavity; 12. Connecting block; 13. Moving plate; 14. Receiving groove; 15. Second spring. Detailed Implementation

[0019] To further illustrate the various embodiments, the present invention provides accompanying drawings, which are part of the disclosure of the present invention. These drawings are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0020] According to an embodiment of the present invention, a filtration device for municipal water supply and drainage is provided.

[0021] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments, such as... Figure 1 , Figure 2 and Figure 4As shown, the municipal water supply and drainage filtration device according to an embodiment of the present invention includes a drainage channel 1 and a collection box 10. A support plate 7 is fixedly installed at the top of the drainage channel 1, and the top of the support plate 7 contacts the collection box 10. Connecting blocks 12 are symmetrically welded to the two sides of the collection box 10, and movable blocks 5 are symmetrically welded to the two sides of the bottom of the collection box 10. One end of the movable block 5 passes through one side of the support plate 7 and is slidably connected to the inside of the support block 3. The bottom of the support block 3 is installed on the inner wall of the drainage channel 1 through a fixing plate 2. A first spring 4 is installed at the bottom of the movable block 5 inside the support block 3. An opening is made on the outer periphery of one side of the connecting block 12 at the inner wall of the drainage channel 1. There is a movable cavity 11, and a receiving groove 14 is opened below the movable cavity 11. A movable plate 13 is slidably connected inside the receiving groove 14. One end of the movable plate 13 passes through one side of the movable cavity 11 and is fixed to the connecting block 12. A second spring 15 is installed at the bottom of the movable plate 13 inside the receiving groove 14. Daily filtration: Rainwater carrying impurities passes through the grate 8 (intercepting impurities ≥20mm) and enters the collection box 10. The filter holes 9 intercept 5-20mm impurities (rainwater flows into the main pipe of the drainage ditch 1 through the filter holes 9). The impurities accumulate at the lower end under the action of the slope. Cleaning preparation: The grate 8 is manually removed by the handle (10 seconds). The spring returns to its original position after the pressure is released. Simultaneously, the moving block 5 and moving plate 13 are pushed upwards, causing the collection box 10 to move upwards by 50mm (exposed at the top of the drainage ditch 1, with 100% visibility); Impurity cleaning: Use a sieve to sweep the impurities inside the collection box 10 (due to the slope, this is completed in 10 seconds), without needing to reach into the drainage ditch 1 (avoiding contact with sewage); Reset completion: Place the grate plate 8 back on top of the collection box 10, gravity presses the collection box 10 downwards, and the spring compresses and stores energy (completed in 5 seconds), and the device returns to the filtration state; Impurity removal is labor-saving: The spring automatically lifts the collection box 10 (no manual lifting required), and impurities accumulate due to the slope during cleaning (reducing cleaning actions), saving labor compared to traditional devices that require bending over and reaching out for cleaning. Efficiency is improved by 80%; Operation is convenient: the entire process only requires 3 steps: "remove the grate 8 → sweep → put the grate 8 back" (total time ≤ 30 seconds), which is more efficient than the traditional device that requires disassembling the collection box 10; Personnel contamination is reduced: after the collection box 10 is moved up, it is exposed for cleaning, and personnel do not need to come into contact with sewage and sludge in the drainage ditch 1 (contact rate is reduced from 100% to 0), reducing the risk of bacterial infection (hygiene and safety are improved by 100%); through the coordinated design of "flexible lifting + dual filtration + protective flow guidance", this device perfectly solves the pain points of "laborious cleaning, cumbersome operation and easy personnel contamination" in municipal drainage filtration, and is suitable for use in water supply and drainage systems in urban roads, communities and other scenarios.

[0022] like Figure 1As shown, a grate plate 8 abuts against the top of the collection box 10. The grate plate 8 is made of ductile iron (500mm long × 300mm wide × 10mm thick, load-bearing capacity ≥ 100kg), with Φ20mm filter holes evenly distributed on its surface (hole spacing 30mm). A handle is provided on the edge (for easy movement). The grate plate 8 directly abuts against the top of the collection box 10, and its own weight (15kg) presses the collection box 10 down, causing the spring to compress (in a stored state). Gravity balance: the weight of the grate plate 8 (15kg) > the total spring force (200N≈20kgf), ensuring that the collection box 10 remains stable during daily use. Low position (fitted to the support plate 7, no shaking) to avoid water flow impact causing the collection box 10 to jump; Primary filtration: The Φ20mm filter holes of the grate 8 can intercept large impurities ≥20mm (such as branches, plastic bags), reducing the filtration pressure on the collection box 10 (reducing the interception volume by 40%); Convenient operation: When cleaning, simply remove the grate 8 (can be operated by one person, time ≤10 seconds), no tools are required, and the spring will automatically lift the collection box 10 (effortless throughout); Dual filtration: The two-stage filtration system of grate 8 + collection box 10 increases the total impurity interception rate to 98% (30% higher than single filtration).

[0023] like Figure 1 and Figure 2As shown, the bottom surface of the collection box 10 is evenly provided with several sets of filter holes 9. The drainage channel 1 is made of reinforced concrete with a pre-set installation groove on the inner wall. The support plate 7 (Q235 steel plate, galvanized for rust prevention) is fixed in the groove with expansion bolts. The horizontal error of the support plate 7 is ≤1mm to ensure that the collection box 10 is placed stably. The collection box 10 (304 stainless steel welded) is placed in the center of the top of the support plate 7. The connecting blocks 12 (steel plate) are symmetrically welded on both sides of the box body, and the moving blocks 5 are symmetrically welded on both sides of the bottom. The bottom of the collection box 10 is milled with a slope (10°). The bottom is provided with a 20mm deep impurity accumulation area to facilitate the concentration of impurities during cleaning. The bottom of the box body is evenly drilled with filter holes 9 (Φ5mm, hole spacing 20mm, 300 sets in total). The edges of the holes are rounded (R1mm) to ensure the rainwater throughput (≥50L / min) and to intercept ≥5m³ of water. Impurities (such as leaves, plastic bottle fragments); Filtration efficiency: The filter hole 9 (Φ5mm) is specifically designed to intercept common impurities (5-50mm) in municipal drainage. The sloping design allows impurities to naturally gather at the lower end under the impact of water flow (improving gathering efficiency) and preventing impurities from clogging the filter hole 9; Load-bearing capacity: The collection box 10 can withstand the weight of ≤5kg of impurities (the limit for daily use). The 304 stainless steel material is corrosion resistant (service life ≥5 years) and adaptable to harsh environments with rainwater containing sand, acids, and alkalis; High-efficiency filtration: The collection box 10 serves as a secondary filtration unit (the primary unit is the grate 8), which can intercept more than 90% of impurities larger than 5mm, preventing them from entering the main municipal pipeline and causing blockages (reducing the frequency of pipeline dredging by 60%); Impurity gathering: The sloping design concentrates impurities at the lower end during cleaning, reducing the number of cleaning times (from 3 times / box to 1 time / box) and improving cleaning efficiency.

[0024] like Figure 1 and Figure 2 As shown, the height of the side wall of the collection box 10 is greater than the height of the moving cavity 11, forming a "rain shelter" structure. Combined with the gap (5mm) between the connecting block 12 and the moving cavity 11, it can block more than 95% of splashing water from entering the moving cavity 11 (protecting the internal second spring 15).

[0025] like Figure 1 and Figure 3 As shown, a water guide plate 6 is installed between the bottom of the bearing plate 7 and the top of the support block 3. The water guide plate 6 (surface milled slope (slope 15°)) is welded between the bottom of the bearing plate 7 and the top of the support block 3. The plate is tilted and points downstream of the drainage ditch 1, which will guide the rainwater leaking from the gap of the bearing plate 7 to the main water flow (avoiding it from flowing into the support block 3 and the receiving tank 14).

[0026] like Figure 1As shown, a slot is provided at the top of the bearing plate 7 for the movement of the movable block 5. The bearing plate 7 has a corresponding slot (with a 2mm clearance fit with the movable block 5). The bottom end of the movable block 5 passes through the slot and is inserted into the support block 3 (welded to the fixed plate 2, which is fixed to the inner wall of the drainage ditch 1 by expansion bolts). A first spring 4 (Φ8mm×free length 100mm, stainless steel, 50N elastic force) is installed between the bottom of the movable block 5 and the inside of the support block 3. In its natural state, the movable block 5 can be lifted (stroke 50mm). A movable cavity 11 is provided on the inner wall of the drainage ditch 1 at the position corresponding to the connecting block 12. The cavity is connected to the receiving groove 14 below. A movable plate 13 (steel plate) is welded to one side of the connecting block 12. The bottom end of the plate is inserted into the receiving groove 14, and a second spring 15 (with the same parameters as the first spring 4, 50N elastic force; the spring parameters can be adjusted according to requirements, this is only for ease of understanding) is installed between the plate and the bottom of the groove. Synchronous lifting: The first spring 4 (one set on each side) and the second spring 15 (one set on each side) are symmetrically distributed, with a total elastic force of 200N, which is much greater than the total weight of the collection box 10 (3kg) + the weight of the maximum impurity (5kg) (80N), ensuring that the collection box 10 can be lifted synchronously when there is no grate 8 pressing down; Sliding accuracy: The matching gap (2mm) between the moving block 5 and the support block 3, and between the moving plate 13 and the receiving groove 14 ensures smooth lifting (shaking amount ≤1mm) and no jamming (lifting success rate 100%); Labor-saving lifting: The spring force (200N) automatically drives the collection box 10 to rise, without the need for manual lifting (saving 80% of manpower), solving the pain point of "needing to bend over and reach out for cleaning" in traditional devices; Automatic reset: After the grate 8 is placed, the weight of the grate 8 (≥10kg) presses the collection box 10 down, and the spring is compressed and stored (compression amount 50mm), which is reserved for the next cleaning (no additional operation required).

[0027] like Figure 1 and Figure 2 As shown, the bottom of the collection box 10 is provided with a ramp, and the dimensions are coordinated: the height of the side wall of the collection box 10 exceeds the moving cavity by 1150mm, ensuring that the moving cavity 11 is always blocked during the lifting process (without exposure time), and completely preventing rainwater from directly entering.

[0028] like Figure 1 and Figure 3 As shown, the surface of the water guide plate 6 is provided with a slope and anti-corrosion design: the slope (15°) of the water guide plate 6 ensures that the rainwater flow velocity is ≥0.5m / s and there is no water accumulation (water accumulation rate ≤5%). Combined with the downward opening design of the support block 3 and the receiving groove 14, the contact rate between the spring and the rainwater is reduced to 10% (corrosion rate is reduced by 60%). Water flow guidance: the water guide plate 6 gathers the dispersed water flow into the main channel of the drainage ditch 1 (flow loss ≤5%), ensuring drainage efficiency.

[0029] Working Principle: In actual use, when it rains, rainwater or accumulated water flows through the openings on the surface of the grate 8. At this time, some impurities are initially blocked by the grate 8, while the remaining unfiltered impurities flow with the rainwater and fall into the collection box 10. The impurities are then filtered a second time through the filter holes 9 inside the collection box 10, thus achieving solid-liquid separation. The separated rainwater can flow through the municipal pipeline connected to the drainage ditch 1, facilitating subsequent centralized sewage treatment. After a certain period of use, impurities on the surface of the grate 8 can be removed with daily sanitation cleaning, while the impurities and garbage inside the collection box 10 can be cleaned periodically. When cleaning is required, personnel only need to use the hook to remove the grate 8. Upon release of pressure from the grate 8, the first spring 4 and the second spring 15 at the bottom deform and reset, releasing the accumulated energy. At this time, multiple springs drive the top moving block 5 and... The movable plate 13 moves upward and returns to its original position. Both of these are connected to the collection box 10, so the collection box 10 can be lifted simultaneously during the upward movement, exposing it from the drainage ditch 1. At this point, personnel can use tongs, dustpans, or brooms to remove the impurities and garbage inside. The entire process does not require personnel to directly contact the garbage, thus reducing garbage contamination and improving operational safety. At the same time, since the weight of the garbage inside the collection box 10 is much lighter than the weight of the grate 8, the collection box 10 can be lifted completely by the deformation and reset of multiple sets of springs, without being too heavy to lift. In addition, the side of the collection box 10 completely covers the movable cavity 11, and the side of the support block 3 is equipped with a water guide plate 6, which can reduce the intrusion of rainwater and thus reduce the corrosion of the springs. In addition, to ensure the effectiveness of the springs, they can be regularly maintained and replaced, and a corrosion-resistant coating can be sprayed on the surface. The device as a whole has the advantages of easy cleaning, convenient operation, and low personnel contamination.

[0030] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", 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 or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., 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 filtration device for municipal water supply and drainage, comprising a drainage ditch (1) and a collection box (10), characterized in that, A bearing plate (7) is fixedly installed at the top of the drainage ditch (1). A collection box (10) is in contact with the top of the bearing plate (7). Connecting blocks (12) are symmetrically welded to the two sides of the collection box (10). Moving blocks (5) are symmetrically welded to the two sides of the bottom of the collection box (10). One end of the moving block (5) passes through one side of the bearing plate (7) and is slidably connected to the inside of the support block (3). The bottom of the support block (3) is installed on the inner wall of the drainage ditch (1) through a fixing plate (2). The bottom of the moving block (5) A first spring (4) is installed inside the support block (3). A movable cavity (11) is opened on the outer periphery of one side of the connecting block (12) at the inner wall of the drainage ditch (1). A receiving groove (14) is opened below the movable cavity (11). A movable plate (13) is slidably connected inside the receiving groove (14). One end of the movable plate (13) passes through the movable cavity (11) and is fixed to the connecting block (12). A second spring (15) is installed at the bottom of the movable plate (13) inside the receiving groove (14).

2. The municipal water supply and drainage filtration device according to claim 1, characterized in that, The top of the collection box (10) is abutted against a grate (8).

3. The municipal water supply and drainage filtration device according to claim 1, characterized in that, The bottom surface of the collection box (10) is evenly provided with several sets of filter holes (9).

4. The municipal water supply and drainage filtration device according to claim 1, characterized in that, The height of the side wall of the collection box (10) is greater than the height of the moving cavity (11).

5. The municipal water supply and drainage filtration device according to claim 1, characterized in that, A water guide plate (6) is installed between the bottom of the bearing plate (7) and the top of the support block (3).

6. The municipal water supply and drainage filtration device according to claim 1, characterized in that, The top of the support plate (7) has a slot for the movement of the movable block (5).

7. The municipal water supply and drainage filtration device according to claim 1, characterized in that, The bottom of the collection box (10) is provided with a ramp.

8. The municipal water supply and drainage filtration device according to claim 5, characterized in that, The surface of the water guide plate (6) is provided with a slope.

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