A filtering device for municipal water supply and drainage

Abstract

The present invention provides a filtering device for municipal water supply and drainage, including a drain pipe cover, a filtering assembly and an opening and closing driving mechanism, wherein the filtering assembly includes a filter plate and an abutment, and the opening and closing driving mechanism includes a movable module, a connecting member, a fixing member, an elastic member and a driving module. The present invention arranges a filter plate on the water inlet of the drain pipe cover, and the water flow can be discharged into the pipe below the drain pipe cover through the filtering holes of the filter plate, while leaves, garbage and other debris are blocked on the outside by the filter plate, and the movable module is further driven by the driving module to move with the connecting member, so that the connecting member is switched to a relaxed state, and the filter plate can be turned outward under the action of the abutment and remove the debris covering the filter plate, so as to prevent the filtering holes from being blocked and affecting the drainage. The device has high filtering efficiency, has an automatic cleaning function, and is very convenient to use.

Description

Technical Field

[0001] The invention relates to the technical field of municipal water supply and drainage, and in particular to a filtering device for municipal water supply and drainage. Background Art

[0002] Water supply and drainage generally refers to the urban water supply system and drainage system. Among them, the urban drainage system is an engineering facility system for treating and draining urban sewage and rainwater, and is a component of urban public facilities. The urban drainage system is usually composed of drainage pipes and sewage treatment plants. In the case of sewage and rainwater diversion, sewage is collected by drainage pipes, sent to sewage treatment, and then discharged into water bodies or recycled; rainwater runoff is collected by drainage pipes and discharged into nearby water bodies.

[0003] When existing municipal water supply and drainage pipes are draining water, a filter structure is often set at the water inlet area of ​​the pipe to block leaves, garbage and other debris that appear due to the water flow during drainage. However, after the filter structure blocks the leaves, garbage and other debris, the leaves, garbage and other debris are easily retained in the water inlet area of ​​the pipe, affecting the flow efficiency of the water flow, and even blocking the water inlet, requiring staff to clean it up, which is very inconvenient. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a filtering device for municipal water supply and drainage, which has an automatic cleaning function.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is:

[0006] A filtering device for municipal water supply and drainage, comprising:

[0007] A drain pipe cover, which is arranged on the water inlet end of the drain pipe and has a water inlet;

[0008] A filter assembly, the filter assembly comprising a filter plate rotatably disposed on the water inlet and an abutment member abutting between the filter plate and the drain pipe cover, the filter plate being provided with a plurality of filter holes, the filter plate having a closed state in which the filter plate is blocked on the water inlet and an open state in which the filter plate is turned outward and away from the water inlet, and the abutment member makes the filter plate have a tendency to move toward the open state;

[0009] An opening and closing drive mechanism, the opening and closing drive mechanism includes a movable module movably arranged on the drain pipe cover, a connecting piece connected between the filter plate and the movable module and having a relaxed state and a tightened state, a fixing piece connected to the drain pipe cover, an elastic piece abutting between the fixing piece and the movable module and causing the connecting piece to have a tendency to maintain a tightened state, and a driving module; when the connecting piece is in a relaxed state, the filter plate is in an open state; when the connecting piece is in a tightened state, the filter plate is in a closed state; and the driving module can drive the movable module to switch between the relaxed state and the tightened state with the connecting piece.

[0010] Preferably, the driving module includes a gear rotatably provided on the drain pipe cover and a power source connected to the gear and used to drive the gear to rotate, the movable module includes a movable part and a gear frame connected to the movable part, the inner wall of the gear frame has a plurality of tooth grooves arranged in sequence along the up and down directions, and the gear is meshed with the tooth grooves of the gear frame.

[0011] In some embodiments, the gear is a notched gear. When the gear rotates until its notch faces the tooth groove of the tooth frame, the gear is disengaged from the tooth groove of the tooth frame, and the elastic member drives the tooth frame to reset, so that the connecting member is in a taut state.

[0012] Furthermore, the tooth groove is provided on an inner wall of one side of the tooth frame.

[0013] In some embodiments, the power source is a driving motor, and the driving motor is fixedly connected to the drain pipe cover via a motor bracket and the gear is connected to its output shaft.

[0014] Preferably, the drain outlets are arranged in a plurality around the circumference of the drain pipe cover, and the filter assembly and the connector are respectively arranged in a plurality corresponding to the water inlets.

[0015] More preferably, there are 5 to 15 drainage outlets.

[0016] In some embodiments, the drain port is disposed on a peripheral side of the drain pipe cover.

[0017] Preferably, the drain pipe cover has a through hole penetrating the drain pipe cover in the up-down direction, the top of the through hole is provided with an elastic blocking sleeve, the movable module is arranged in the through hole and the top thereof is connected to the elastic blocking sleeve. The elastic blocking sleeve can block water from flowing into the through hole.

[0018] In some embodiments, the through hole is located in a middle area of ​​the drain pipe cover.

[0019] In some embodiments, the connecting member is a traction wire, and the drain pipe cover is provided with a wire groove for the connecting member to pass through.

[0020] In some embodiments, the abutment member is a torsion spring.

[0021] In some embodiments, the elastic member is a compression spring.

[0022] Preferably, the filtering device also includes a deodorizing mechanism, which includes a mounting frame rotatably disposed at the bottom of the drain pipe cover, a motor for driving the mounting frame to rotate, an air suction component disposed on the mounting frame, and a purifier connected to the air outlet end of the air suction component.

[0023] Further preferably, the mounting frame extends radially along the drain pipe cover and is provided with a first guide groove consistent with its extension direction, the air suction component is slidably disposed in the first guide groove, and the deodorization mechanism also includes a transmission component connected to the air suction component and configured to enable the air suction component to reciprocate in the first guide groove.

[0024] In some embodiments, the transmission assembly includes a first transmission member rotatably disposed on the outer end of the mounting frame, a second transmission member fixedly connected to the first transmission member, and a third transmission member having one end hinged to the second transmission member and the other end rotatably connected to the suction assembly. The inner wall of the pipe where the drain pipe cover is located has a gear ring, and the first transmission member is engaged with the gear ring. When the mounting frame is controlled to rotate, the gear ring drives the first transmission member to rotate synchronously with the second transmission member, so as to drive the third transmission member to reciprocate with the suction assembly in the guide groove.

[0025] In some embodiments, the air suction assembly includes an air pump, a mounting member for slidingly connecting the air pump to the mounting frame, an air intake pipe connected to the air intake end of the air pump, an annular pipe connected to the air intake pipe, and an air suction disk arranged on the annular pipe.

[0026] Further, the suction disks are multiple and are arranged circumferentially around the annular pipe.

[0027] Preferably, the municipal water supply and drainage filtering device is used to filter rainwater.

[0028] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0029] The present invention arranges a filter plate on the water inlet of the drain pipe cover, so that water can be discharged into the pipe below the drain pipe cover through the filter holes of the filter plate, while debris such as leaves and garbage are blocked on the outside by the filter plate. The driving module further drives the movable module to move with the connecting member, so that the connecting member is switched to a relaxed state, so that the filter plate can be flipped outward under the action of the abutment member and the debris accumulated on the filter plate can be removed to prevent the filter holes from being blocked. The device has high filtering efficiency and an automatic cleaning function, and is very convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A schematic diagram of the structure of a filtering device provided in Example 1;

[0031] Figure 2 A cross-sectional view of a filtering device provided in Example 1;

[0032] Figure 3 A cross-sectional view of a filtering device provided in Example 1 from another angle;

[0033] Figure 4 A schematic diagram of the structure of a filtering device provided in Example 1 (the drain pipe cover is not shown);

[0034] Figure 5 A schematic diagram of the structure of an opening and closing drive mechanism provided in Example 1 (connecting parts are not shown);

[0035] Figure 6 A schematic diagram of the structure of a deodorizing mechanism provided in Example 1;

[0036] Figure 7 A schematic structural diagram of a deodorizing mechanism provided in Example 1 from another angle;

[0037] Figure 8 A schematic diagram of the structure of a transmission assembly and an air intake assembly provided in Example 1;

[0038] Among them, 1. drainage pipe; 11. gear ring;

[0039] 2. Drain pipe cover; 21. Water inlet; 22. Through hole; 23. Wire guide groove;

[0040] 3. Filter assembly; 31. Filter plate; 311. Filter hole; 32. Abutment member; 33. Rotating shaft;

[0041] 4. Opening and closing driving mechanism; 41. movable module; 411. connecting part; 412. movable main body; 413. blocking part; 414. tooth frame; 42. connecting member; 43. fixing member; 44. elastic member; 45. gear; 451. notch; 46. driving motor; 47. motor bracket;

[0042] 5. Elastic blocking sleeve;

[0043] 6. Deodorizing mechanism; 61. Mounting frame; 611. First guide groove; 612. Second guide groove; 62. Air suction assembly; 621. Air pump; 622. Mounting seat; 623. Air outlet pipe; 624. Air inlet pipe; 625. Annular pipe; 626. Air suction disc; 627. Guide block; 63. Purifier; 64. First transmission member; 65. Second transmission member; 66. Third transmission member; 67. Stepper motor; 68. Ring. DETAILED DESCRIPTION

[0044] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the embodiments of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0045] In the description of the embodiments of the present invention, it should be understood that the terms "upper" and "lower" indicate directions or positional relationships. Figure 1 It is only for the convenience of describing the embodiments of the present invention and simplifying the description, and does not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present invention.

[0046] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0047] In the embodiments of the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0048] The disclosure below provides many different embodiments or examples to implement different structures of the embodiments of the present invention. In order to simplify the disclosure of the embodiments of the present invention, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the embodiments of the present invention. In addition, the embodiments of the present invention can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed.

[0049] The embodiments of the present invention are described in detail below with reference to the accompanying drawings. Example 1

[0050] A filter device for municipal water supply and drainage is used to filter water entering a drainage pipe 1. The drainage pipe 1 includes a main body and a water inlet pipe connected to the main body and extending in an up-down direction, such as Figure 1 and Figure 2 As shown, the filter device is installed on the water inlet pipe, and the water flows through the main body to the downstream after being filtered by the filter device.

[0051] See also Figures 1 to 5 The filtering device includes a drain pipe cover 2, a filtering assembly 3 and an opening and closing driving mechanism 4 arranged on the drain pipe cover 2.

[0052] The drain pipe cover 2 is installed on the water inlet end above the water inlet pipe of the drainage pipe 1. Specifically, it can be fixedly connected to the water inlet end by threads, or detachably connected to the water inlet end by bolts, flanges and other components. It can also be connected to the water inlet end by a socket method, or it can be directly covered on the water inlet end to block the water inlet end. In this embodiment, the drain pipe cover 2 is detachably connected to the water inlet end by bolts. The drain pipe cover 2 is provided with a water inlet 21. One or more water inlets 21 can be provided according to needs, preferably multiple water inlets are provided to accelerate drainage efficiency. In this embodiment, see Figures 1 to 3 The water inlet 21 has multiple, specifically 9, water inlet ports 21 arranged at intervals on the circumference of the drain pipe cover 2. The drain pipe cover 2 is also provided with a through hole 22 and a wire groove 23 for installing the opening and closing drive mechanism 4. The through hole 22 is preferably located in the middle area, and the wire groove 23 is located between the through hole 22 and the water inlet 21 and has one or more corresponding to the water inlet 21.

[0053] The filter assembly 3 has one or more correspondingly arranged with the water inlet 21. Taking one of them as an example, it includes a filter plate 31 rotatably arranged at the water inlet 21 and an abutment 32 abutting between the filter plate 31 and the drain pipe cover 2. The filter plate 31 is provided with a plurality of filter holes 311 for draining water and blocking the passage of leaves and other debris. The filter plate 31 has a closed state and an open state. When it is in the closed state, the filter plate 31 is blocked on the water inlet 21, and the water flows through the filter holes 311 into the drainage pipe 1 below; when it is switched from the closed state to the open state, the filter plate 31 flips outward and away from the water inlet 21, switching to the open state. During the flipping process of the filter plate 31, the leaves and other debris accumulated on the filter plate 31 are thrown out, thereby effectively preventing the debris from being retained in the water inlet 21 area and blocking the water inlet 21, thereby ensuring the efficient flow of water. Preferably, the rotating shaft 33 of the filter plate 31 is located at the end thereof close to the through hole 22 of the drain pipe cover 2, so that the filter plate 31 is turned in the direction close to the through hole 22, so as to throw the debris to the middle area of ​​the drain pipe cover 2, and it is not easy to be washed onto the filter plate 31 by the water flow again, so that the accumulated debris such as leaves can be cleaned manually regularly. Specifically, the filter plate 31 has a filter plate body and a mounting protrusion connected to the filter plate body, and the mounting protrusion is located at the end of the filter plate body close to the through hole 22 of the drain pipe cover 2 (i.e., the inner side of the filter plate body), and its upper end is rotatably connected to the drain pipe cover 2 through the rotating shaft 33.

[0054] The abutment 32 makes the filter plate 31 have a tendency to move toward the open state. Specifically, the abutment 32 is a torsion spring, which has two ends connected to both sides of the rotating shaft 33 of the filter plate 31. Under the torsion force of the torsion spring, the filter plate 31 has a tendency to move toward the open state.

[0055] See also Figure 4 The opening and closing driving mechanism 4 includes a fixing member 43, a movable module 41, a connecting member 42, an elastic member 44 and a driving module.

[0056] The fixing member 43 is fixedly arranged on the drain pipe cover 2, and specifically the cover is arranged below the through hole 22 of the drain pipe cover 2. The fixing member 43 has a cavity, and a sliding groove for the movable module 41 to slide is provided on the wall of the cavity. The movable module 41 is slidably arranged in the through hole 22 of the drain pipe cover 2 along the up-down direction, and includes a movable member and a tooth frame 414. The inner wall of one side of the tooth frame 414 has a plurality of tooth grooves arranged in sequence along the up-down direction, and the connecting arms on both sides of the tooth frame 414 are connected to the movable member through the sliding groove. The movable member includes a connecting portion 411, a movable main body portion 412 and a blocking portion 413 arranged in sequence from top to bottom, the movable main body portion 412 is a rod, and the connecting portion 411 and the blocking portion 413 are plates. The connector 42 may be a traction line, which has one or more correspondingly arranged with the filter assembly 3. For example, one end of the connector 42 is connected to the connecting portion 411, and the other end passes through the wire groove 23 and is connected to the corresponding filter plate 31, preferably connected to the middle area of ​​the inner end of the filter plate body. The connector 42 has a relaxed state and a tightened state. When the connector 42 is in a relaxed state, the filter plate 31 is in an open state due to the force of the abutment 32. When the connector 42 is in a tightened state, the connector 42 pulls the filter plate 31 to overcome the force of the abutment 32 and is in a closed state. The elastic member 44 is arranged in the cavity and abuts between the bottom of the cavity and the blocking portion 413, so that the active module 41 has a tendency to move upward, so that the connector 42 has a tendency to remain in a tightened state. The elastic member 44 is preferably a torsion spring. The driving module can drive the active module 41 to switch between the relaxed state and the tightened state with the connector 42.

[0057] Specifically, the driving module includes a driving motor 46 fixed to the drain pipe cover 2 by a driving bracket and a gear 45 connected to the output shaft of the driving motor 46, and the gear 45 is meshed with the tooth groove of the tooth frame 414. When the driving motor 46 is started, the gear 45 can rotate synchronously with the rotation of the output shaft, thereby driving the tooth frame 414 to move downward with the movable part, so that the connecting member 42 is switched to a relaxed state, thereby opening the filter plate 31. The start of the driving motor 46 refers to the common control methods in the art, for example, it can be controlled by remote wireless, and no specific restrictions are made. Further, the gear 45 is a notched gear. When the gear 45 rotates to the point where its notch 451 is directly opposite to the tooth groove of the tooth frame 414, the gear 45 is disengaged from the tooth groove of the tooth frame 414, and the elastic member 44 drives the tooth frame 414 to move upward and reset, so that the connecting member 42 is in a taut state, thereby closing the filter plate 31.

[0058] Furthermore, an elastic blocking sleeve 5 is provided at the top of the through hole 22 of the drain pipe cover 2, and the top of the movable module 41 is connected to the elastic blocking sleeve 5, specifically, the connecting part 411 is connected to the elastic blocking sleeve 5, and the elastic blocking sleeve 5 can block water from flowing into the through hole 22.

[0059] Since there will be odor in the drainage pipe 1, the spread of odor will affect the living environment of the surrounding residents. The filtering device of this embodiment is also provided with an odor removal mechanism 6, which can absorb and purify the odor generated in the drainage pipe 1, thereby reducing the dissipation of odor and avoiding affecting the living environment of the surrounding residents.

[0060] Specifically, Figures 6 to 8 As shown, the deodorizing mechanism 6 includes a motor, a mounting bracket 61, an air suction component 62 and a purifier 63. The motor is fixedly connected to the bottom of the fixing member 43 through a collar 68, and the motor is preferably a stepping motor 67. The mounting bracket 61 is connected to the output shaft of the motor, and it can rotate synchronously with the rotation of the motor output shaft. The middle area of ​​the mounting bracket 61 is provided with a first guide groove 611 consistent with its extension direction, and the inner walls on both sides of the first guide groove 611 are provided with second guide grooves 612 consistent with its extension direction. The air suction component 62 is slidably arranged in the first guide groove 611. The purifier 63 is connected to the air outlet end of the air suction component 62, and is used to purify the gas discharged from the air suction component 62.

[0061] The deodorizing mechanism 6 also includes a transmission assembly connected to the air suction assembly 62 and configured to make the air suction assembly 62 reciprocate in the first guide groove 611, the transmission assembly includes a first transmission member 64 rotatably arranged on the outer end of the mounting frame 61, a second transmission member 65 fixedly connected to the first transmission member 64, and a third transmission member 66 hinged at one end to the second transmission member 65 and rotatably connected to the air suction assembly 62 at the other end. The inner wall of the water inlet pipe where the drain pipe cover 2 is located has a gear ring 11, and the first transmission member 64 is engaged with the gear ring 11. When the mounting frame 61 is controlled to rotate, the gear ring 11 drives the first transmission member 64 to rotate synchronously with the second transmission member 65, and drives the third transmission member 66 to reciprocate with the air suction assembly 62 in the guide groove.

[0062] The air suction assembly 62 includes an air pump 621, a mounting member, an annular pipe 625, an air inlet pipe 624, an air outlet pipe 623 and an air suction disc 626. The mounting member is arranged between the air pump 621 and the mounting frame 61, and is configured to make the air pump 621 slidably connected to the mounting frame 61. The mounting member includes a mounting seat 622 sleeved on the outside of the air pump 621 and a guide block 627 connected to both sides of the mounting seat 622 and matching the second guide groove 612, wherein the guide block 627 is partially located in the second guide groove 612, so that the air pump 621 can slide along the extension direction of the second guide groove 612. One end of the air inlet pipe 624 is connected to the air inlet end of the air pump 621, and the other end is connected to the annular pipe 625. One end of the air outlet pipe 623 is connected to the air outlet end of the air pump 621, and the other end is connected to the purifier 63. The air suction disc 626 is arranged on the annular pipe 625 and has a plurality of arranged around the annular pipe 625.

[0063] Working principle:

[0064] During drainage, rainwater drives debris such as leaves and garbage to flow onto the filter plate 31 , and the filter holes 311 of the filter plate 31 allow rainwater to pass through, and the filter plate 31 blocks debris such as leaves and garbage.

[0065] As leaves, garbage and other debris accumulate in the water inlet 21 area, the speed of rainwater passing through the filter plate 31 decreases, the drive motor 46 is started, the drive motor 46 drives the gear 45 to rotate, the gear 45 drives the tooth frame 414 to move downward with the movable part to overcome the elastic force of the elastic part 44, the elastic part 44 is compressed, and as the connecting part 411 descends, the connecting part 42 gradually switches to a relaxed state, the filter plate 31 flips outward under the force of the abutment 32 and throws the leaves, garbage and other debris on it onto the drain pipe cover 2, completing the cleaning. As the gear 45 continues to rotate, when the gear 45 rotates to its notch 451 facing the tooth groove of the tooth frame 414, the gear 45 is disengaged from the tooth groove of the tooth frame 414, the elastic part 44 drives the blocking part 413 to move upward with other parts of the movable module 41, the movable module 41 is reset, the movable module 41 pulls the connecting part 42 to tighten the connecting part 42, and the connecting part 42 pulls the filter plate 31 to overcome the force of the abutment 32 and close.

[0066] After drainage, odor will appear inside the drainage pipe 1. At this time, the stepper motor 67 and the air pump 621 are started, and the mounting frame 61 is driven to rotate by the stepper motor 67. Under the force of the gear ring 11, the first transmission member 64 at the end of the mounting frame 61 rotates synchronously with the second transmission member 65, and drives the third transmission member 66 to reciprocate with the air suction component 62 in the guide groove. During the movement of the air suction component 62, the air pump 621 can suck out the gas inside the annular pipe 625 through the air inlet pipe 624, so that the inside is in a negative pressure state, thereby absorbing the odor in the exhaust pipe through the air suction disc 626, and then the odor is transported to the inside of the air outlet pipe 623 through the air pump 621, and further transported to the inside of the purifier 63, so as to achieve odor removal.

[0067] The above detailed description of the present invention is intended to enable persons familiar with the art to understand the contents of the present invention and implement them. It does not limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A filtering device for municipal water supply and drainage, characterized in that: include: A drain pipe cover (2), the drain pipe cover (2) being arranged on the water inlet end of the drain pipe (1), and having a water inlet (21), wherein the water inlet (21) has a plurality of water inlets (21) arranged around the circumference of the drain pipe cover (2); A filter assembly (3), the filter assembly (3) having a plurality of filter plates (31) arranged corresponding to the water inlet (21), the filter assembly (3) comprising a filter plate (31) rotatably arranged on the water inlet (21) and an abutment member (32) abutting between the filter plate (31) and the drain pipe cover (2), the filter plate (31) having a plurality of filter holes (311), the filter plate (31) having a closed state in which it is blocked on the water inlet (21) and an open state in which it is turned outward and away from the water inlet (21), and the abutment member (32) causes the filter plate (31) to have a tendency to move toward the open state; An opening and closing drive mechanism (4), the opening and closing drive mechanism (4) comprising an active module (41) movably arranged on the drain pipe cover (2), a connecting member (42) connected between the filter plate (31) and the active module (41) and having a relaxed state and a tightened state, a fixing member (43) connected to the drain pipe cover (2), an elastic member (44) abutting between the fixing member (43) and the active module (41) and causing the connecting member (42) to have a tendency to maintain a tightened state, and a driving module, the connecting member (42) having a plurality of connecting members corresponding to the filter assembly (3), the connecting member (42) being a traction line, when the connecting member (42) is in a relaxed state, the filter plate (31) is in an open state, when the connecting member (42) is in a tightened state, the filter plate (31) is in a closed state, and the driving module is capable of driving the active module (41) to switch between the relaxed state and the tightened state with the connecting member (42).

2. The municipal water supply and drainage filtering device according to claim 1, characterized in that: The driving module comprises a gear (45) rotatably arranged on the drain pipe cover (2) and a power source connected to the gear (45) and used to drive the gear (45) to rotate, the movable module (41) comprises a movable part and a tooth frame (414) connected to the movable part, the inner wall of the tooth frame (414) has a plurality of tooth grooves arranged in sequence along the up-down direction, and the gear (45) is meshed with the tooth grooves of the tooth frame (414).

3. The municipal water supply and drainage filtering device according to claim 2, characterized in that: The gear (45) is a notched gear, and when the gear (45) rotates until its notch (451) faces the tooth groove of the tooth frame (414), the gear (45) is disengaged from the tooth groove of the tooth frame (414), and the elastic member (44) drives the tooth frame (414) to reset, so that the connecting member (42) is in a taut state; and / or, The power source is a driving motor (46), which is fixedly connected to the drain pipe cover (2) via a motor bracket (47) and has an output shaft connected to the gear (45).

4. The municipal water supply and drainage filtering device according to claim 1, characterized in that: The drain pipe cover (2) has a through hole (22) penetrating the drain pipe cover (2) in the up-down direction, an elastic blocking sleeve (5) is provided at the top of the through hole (22), and the movable module (41) is arranged in the through hole (22) and its top is connected to the elastic blocking sleeve (5).

5. The municipal water supply and drainage filtering device according to claim 1, characterized in that: The drain pipe cover (2) is provided with a wire groove (23) for the connecting piece (42) to pass through; and / or, The abutment member (32) is a torsion spring; and / or, The elastic member (44) is a compression spring.

6. The municipal water supply and drainage filtering device according to any one of claims 1 to 5, characterized in that: The filtering device further comprises an odor removal mechanism (6), the odor removal mechanism (6) comprising a mounting frame (61) rotatably disposed at the bottom of the drain pipe cover (2), a motor for driving the mounting frame (61) to rotate, an air suction component (62) disposed on the mounting frame (61), and a purifier (63) connected to an air outlet end of the air suction component (62).

7. The municipal water supply and drainage filtering device according to claim 6, characterized in that: The mounting frame (61) extends radially along the drain pipe cover (2) and is provided with a first guide groove (611) which is consistent with the extension direction thereof; the air suction component (62) is slidably arranged in the first guide groove (611); and the deodorizing mechanism (6) further comprises a transmission component connected to the air suction component (62) and configured to enable the air suction component (62) to perform reciprocating motion in the first guide groove (611).

8. The municipal water supply and drainage filtering device according to claim 7, characterized in that: The transmission assembly comprises a first transmission member (64) rotatably arranged at the outer end of the mounting frame (61), a second transmission member (65) fixedly connected to the first transmission member (64), and a third transmission member (66) having one end hinged to the second transmission member (65) and the other end rotatably connected to the suction assembly (62). The inner wall of the pipe where the drain pipe cover (2) is located has a toothed ring (11), and the first transmission member (64) is meshed with the toothed ring (11). When the mounting frame (61) is controlled to rotate, the toothed ring (11) drives the first transmission member (64) to rotate synchronously with the second transmission member (65), so as to drive the third transmission member (66) to reciprocate with the suction assembly (62) in the first guide groove (611).

9. The municipal water supply and drainage filtering device according to claim 6, characterized in that: The air suction assembly (62) comprises an air pump (621), a mounting member for slidably connecting the air pump (621) to the mounting frame (61), an air intake pipe (624) connected to the air intake end of the air pump (621), an annular pipe (625) connected to the air intake pipe (624), and a plurality of air suction discs (626) arranged on the annular pipe (625).

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