Driving mechanism, rain and sewage diversion device and control method

Abstract

The application provides a driving mechanism, a rain and sewage diversion device and a control method, and comprises a support assembly, characterized in that: a limiting rod and a driving assembly matched with the limiting rod are further connected to the support assembly; a limiting part is arranged on the support assembly, the limiting part releases the limiting effect of the driving part (2) when the driving assembly (6) is actuated; and the limiting effect of the driving part (2) by the limiting part is re-implemented after the driving assembly (6) is reset; only a small amount of driving liquid entering the driving assembly is needed to realize the lifting driving of the driving part, the required driving liquid flow is small, the required occupied area is small, the installation requirement for the surrounding environment is low, and the influence on the surrounding environment is small; when the driving mechanism is applied to the rain and sewage diversion device, only a small amount of rainwater is needed to drive the driving assembly to realize effective rain and sewage diversion, the required occupied area is small, the installation requirement for the surrounding environment is low, and the influence on the surrounding environment is small.

Description

Technical Field

[0001] This invention relates to the technical field of rainwater and sewage separation devices, specifically to a drive mechanism, a rainwater and sewage separation device, and a control method. Background Technology

[0002] A rainwater and sewage separation system is a device used to separate rainwater and sewage, such as... Figure 5 The image shows a rainwater and sewage separation device 0-1 in the prior art. When there is only sewage and no large flow of rainwater, the sewage is discharged through the sewage outlet 0-2. When it rains and a large flow of rainwater passes through, the water level inside the rainwater and sewage separation device 0-1 gradually rises, causing the float 0-3 in the water to rise synchronously with the liquid level. Through the linkage mechanism 0-4, the other side cover 0-5 of the linkage mechanism 0-4 can be lowered while the float 0-3 rises, thereby blocking the sewage outlet 0-2. The large flow of rainwater is then discharged directly through the rainwater outlet 0-6, thus effectively achieving rainwater and sewage separation.

[0003] However, the rainwater and sewage separation device in this scheme still has the following defects in actual use:

[0004] 1) Because a large amount of rainwater is required to complete the separation of rainwater and sewage, the size of the rainwater collection surface needs to be large, which places high demands on the installation of the surrounding environment and has a significant impact on the surrounding environment.

[0005] 2) The closing time of the sewage outlet 0-2 cannot be flexibly adjusted according to the different cleanliness levels in the actual use environment.

[0006] In summary, there is an urgent need to provide an effective technical solution to address the defects and shortcomings of the existing technologies. Summary of the Invention

[0007] In order to overcome the defects and shortcomings of the existing technology, the present invention provides a driving mechanism, a rainwater and sewage separation device and a control method.

[0008] The specific solution provided by this invention is as follows:

[0009] Compared with existing technologies, the technical effects that this invention can achieve include:

[0010] 1) This invention provides a driving mechanism that can achieve the lifting and lowering of the driving component by only a small amount of driving fluid entering the driving component. Since the required driving fluid flow rate is small, the required area is small, the installation requirements of the surrounding environment are low, and the impact on the surrounding environment is small.

[0011] 2) This invention provides a rainwater and sewage separation device. When the driving mechanism is applied to the rainwater and sewage separation device, effective rainwater and sewage separation can be achieved by driving the driving component with only a small amount of rainwater. It requires a small area, has low installation requirements for the surrounding environment, and has little impact on the surrounding environment.

[0012] 3) This invention provides a rainwater and sewage separation device, which can flexibly change the size of the drive container in the drive assembly according to the different cleanliness levels in the actual use environment. That is, the closing time of the sewage outlet can be flexibly adjusted as needed, thereby achieving the purpose of discharging heavily polluted first rainwater into the sewage pipe network.

[0013] 4) This invention provides a rainwater and sewage separation device. A first limiting part is formed between the connecting arm mechanism and the connecting rod mechanism. When the first limiting part is in position, even if the float rises or falls with the water level, the first limiting part will not disengage. When the first limiting part disengages, the cover will fall directly due to its own weight to block the sewage outlet. The reaction is rapid and the rainwater and sewage separation efficiency is high. This avoids the situation where rainwater is still discharged with the sewage outlet during the slow rise of the float and slow fall of the cover when the first rain falls. A second limiting part is formed between the limiting rod and the connecting arm mechanism. The first limiting part is limited by the second limiting part, so that the first limiting part will not disengage when the float rises or falls with the water level.

[0014] 5) This invention provides a rainwater and sewage separation device, thereby avoiding the situation where rainwater is still discharged with the sewage outlet during the process of the float slowly rising and the cover slowly falling during the initial rain. It effectively achieves rainwater and sewage separation while also discharging the heavily polluted initial rain into the sewage pipe network.

[0015] 6) This invention provides a rainwater and sewage separation device. A driving component is provided. Rainwater entering the device through the rainwater inlet flows into the driving container of the driving component via the rainwater pipe, causing the driving component to rotate around the hinge point of the support component. The other end of the driving component rises and triggers a limiting rod, causing the connecting arm mechanism to disengage from the linkage mechanism. The cover at the bottom of the linkage mechanism falls directly due to its own weight, blocking the sewage outlet. Rainwater entering the rainwater and sewage separation device can only be discharged from the rainwater outlet. Since the driving component only needs a small amount of rainwater to achieve rotation, and the cover can quickly fall to block the sewage outlet once the limiting rod is released, this effectively avoids the situation where some rainwater is still discharged with the sewage outlet during the slow rise of the float and slow fall of the cover during the initial rain, thus achieving effective rainwater and sewage separation. Attached Figure Description

[0016] Figure 1 This is a front sectional view of the drive mechanism provided by the present invention.

[0017] Figure 2 This is a front sectional view of the rainwater and sewage separation device provided by the present invention.

[0018] Figure 3 This is a top view of the structure of the rainwater and sewage separation device provided by the present invention.

[0019] Figure 4 An enlarged view of the structure of the first limiting part and the second limiting part provided by the present invention.

[0020] Figure 5 This is a top view of the structure of a rainwater and sewage separation device mentioned in the prior art. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0024] [First Embodiment]

[0025] like Figure 1The diagram shows a driving mechanism provided in the first embodiment of the present invention, including a support assembly 1. One side of the support assembly 1 is connected to a driving member 2 via a linkage mechanism 4, and the other side is connected to a reset member 3 via a connecting arm mechanism 5. The support assembly 1 is also connected to a limit rod 7 and a driving assembly 6 that cooperates with the limit rod 7. The driving assembly 6 can drive the driving member 2 to fall freely through the limit rod 7. The reset member 3 rises under the action of external force, which will realize the rise and reset of the driving member 2. Thus, the opening and closing of the corresponding discharge port can be realized through the driving mechanism, thereby realizing the discharge delay control function, such as rainwater and sewage diversion.

[0026] The drive assembly 6 can be driven by means of hydraulic, pneumatic, electric or other methods to drive the drive component 2 to fall freely through the limit rod 7. Similarly, the reset component 3 can also rise under the action of external forces such as hydraulic, pneumatic or electric to achieve the rising and reset of the drive component 2.

[0027] In this embodiment, the support assembly 1 is hinged to the linkage mechanism 4, the connecting arm mechanism 5, the limiting rod 7, and the drive assembly 6, respectively. Specifically, as follows... Figure 1 As shown, in this embodiment, the support assembly 1 has a connecting rod hinge portion 11 that is hinged to the connecting rod mechanism 4 and a connecting arm hinge portion 12 that is hinged to the connecting arm mechanism 5 on both sides. A connecting rod hinge hole for accommodating the connecting rod hinge shaft S1 is provided inside the connecting rod hinge portion 11. One side of the support assembly 1 is hinged to the connecting rod mechanism 4 through the connecting rod hinge shaft S1. A connecting arm hinge hole for accommodating the connecting arm hinge shaft S2 is provided inside the connecting arm hinge portion 12. The other side of the support assembly 1 is hinged to the connecting arm mechanism 5 through the connecting rod hinge shaft S2. A limiting hinge portion 13 that is hinged to the limiting rod 7 is provided at the top of the support assembly 1. A limiting hinge hole for accommodating the limiting hinge shaft S3 is provided inside the limiting hinge portion 13. The limiting rod 7 is hinged to the top of the support assembly 1 through the limiting hinge shaft S3.

[0028] like Figure 1 As shown, in this embodiment, the linkage mechanism 4 includes a flexible transmission member 41 that is hinged to the drive member 2. The top end of the flexible transmission member 41 is hinged to the bottom of the connecting rod 42, and the middle part of the connecting rod 42 is hinged to the connecting rod hinge part 11 through the connecting rod hinge shaft S1. A limiting mechanism 43 that is fixedly connected to the support assembly 1 or the external environment is sleeved on the outer periphery of the flexible transmission member 41. The limiting mechanism 43 enables the flexible transmission member 41 located inside it to perform vertical lifting and lowering movements within the limited track, thereby ensuring that vertical lifting and lowering movements are realized within the vertical track limited by the drive member 2.

[0029] like Figure 1As shown, in this embodiment, the connecting arm mechanism 5 includes a connecting arm 51 and a driving arm 52. One end of the connecting arm 51 is connected to the reset member 3. One end or the middle of the connecting arm 51 is hinged to the connecting arm hinge part 12 through the connecting arm hinge shaft S2. The other end of the connecting arm 51 is also hinged to one end of the driving arm 52 through the driving hinge shaft S5. This allows the rotational action of the driving arm 52 to be transmitted to the reset member 3 so that the reset member 3 can move up and down synchronously. Conversely, the synchronous up and down action of the reset member 3 can also be transmitted to the driving arm 52 so that it can rotate synchronously. The other end of the driving arm 52 is limited and engaged with the linkage mechanism 4.

[0030] like Figure 1 As shown, the drive assembly 6 includes a drive container 61 and a drive rod 62 fixedly connected to the drive container 61 at one end. In this embodiment, the drive container 61 is configured as a funnel, cup, or other arbitrary shape with one side inclined. The inclined edge facilitates the automatic outflow of the drive fluid when the drive container 61 is filled with drive fluid and descends. One end or the middle of the drive rod 62 is provided with a drive hinge portion that is hinged to the support assembly 1. The drive hinge shaft S4 passes through the drive hinge portion and the support hinge portion 14 to realize the hinge between the drive assembly 6 and the support assembly 1. The mass of the drive rod 62 is greater than the mass of the drive container 61, so in the natural state, one end of the drive rod 62 will be set lower than one end of the drive container 61. In one preferred embodiment of the example, when the drive assembly is hydraulically driven, for example, when a small amount of drive fluid enters the drive container 61 and the total mass of the drive container 61 and the internal drive fluid is higher than the mass of the drive rod 62, the drive container 61 can rotate counterclockwise around the drive hinge axis with the internal drive fluid, thereby achieving the rotational lifting of one end of the drive rod 62. When the drive container 61 descends to a preset position, the internal drive fluid can be discharged through one inclined surface. Conversely, when there is no drive fluid in the drive container 61 or the drive fluid has been discharged, because its own mass is lower than the mass of the drive rod 62, the drive container 61, which has no drive fluid or the drive fluid has been discharged, can rotate clockwise around the drive hinge axis, thereby achieving the rotational lowering of one end of the drive rod 62.

[0031] Please see Figure 1In this embodiment, one end of the limiting rod 7 is provided with a limiting rod hinge part 71 that is hinged to the limiting hinge part 13. The limiting hinge shaft S3 passes through the limiting hinge hole and the limiting rod hinge part 71 to realize the hinge between the limiting rod 7 and the bracket assembly 1. The other end of the limiting rod 7 is provided with a second limiting end 72 that cooperates with the limiting arm mechanism 5. The second limiting end 72 is provided with a stop bar 73 that cooperates with the driving assembly 6. When the driving rod rotates and rises, it can drive the stop bar 73 to drive the limiting rod to rotate counterclockwise around the limiting hinge shaft S71 so that the second limiting part B is disengaged and the limiting is released. When the driving rod rotates and lowers, the driving effect on the stop bar 73 disappears, and the limiting rod 7 rotates clockwise around the limiting hinge shaft S3 due to its own gravity to reset.

[0032] In this embodiment, as Figure 4 As shown, the first limiting part A includes a connecting rod protrusion 421 at the top of the connecting rod 42, and a first limiting groove 422 is formed between the connecting rod protrusion 421 and the outer wall of the connecting rod 42. The end of the drive arm 52 protrudes and is provided with a first limiting protrusion 521 that cooperates with the first limiting groove 422. The first limiting protrusion 521 is located inside the first limiting groove 422, thereby limiting the bottom connecting rod mechanism 4 and the drive member 2, so that the drive member 2 is in a high position in the air. When the limiting effect of the first limiting part A is released, the first limiting protrusion 521 disengages from the inside of the first limiting groove 422, and the drive member 2 and the top connecting rod mechanism 4 fall due to their own gravity. Preferably, the first limiting protrusion 521 can be configured as a beak-shaped protrusion that bends towards the first limiting groove 422, and the first limiting groove 422 can be configured as an inwardly concave arc shape that cooperates with the beak shape. While achieving better limiting cooperation, the smooth arc-shaped limiting structure can also reduce the wear generated during limiting cooperation and extend the service life.

[0033] The second limiting part B includes a drive arm protrusion 522 provided on the top of the drive arm 52, and a second limiting groove 523 is formed between the drive arm protrusion 522 and the outer wall of the drive arm 52; the second limiting end 72 is limited and engaged with the second limiting groove 523. When the second limiting part B is in the limiting state, the second limiting end 72 is located inside the second limiting groove 523. The first limiting part A is limited by the second limiting part B, so that the first limiting part A will not be disengaged when the reset member 3 rises or falls.

[0034] The driving mechanism provided in this embodiment can achieve the lifting and lowering of the driving component by only introducing a small amount of driving fluid into the driving component. Since the required driving fluid flow rate is small, the required area is small, the installation requirements for the surrounding environment are low, and the impact on the surrounding environment is small.

[0035] [Second Embodiment]

[0036] like Figure 2 and Figure 3The second embodiment of the present invention is shown. This embodiment provides a rainwater and sewage separation device. The driving component is driven by hydraulic force, and the driving fluid is directly rainwater, thereby effectively achieving the effect of rainwater and sewage separation through the driving mechanism.

[0037] The rainwater and sewage separation device provided in this embodiment includes a housing H. The interior of the housing H is divided into a mixing chamber Q1 and a rainwater chamber Q2 by a partition G. The mixing chamber Q1 and the rainwater chamber Q2 can be connected by opening through holes in the partition G. A mixing inlet M and a sewage outlet W are respectively opened on the side of the housing H near the mixing chamber Q1 and the bottom. A rainwater outlet Y is opened on the side of the housing H near the rainwater chamber Q2. A rainwater inlet P is opened on the side wall of the housing H. A rainwater pipe P1 passes through the rainwater inlet P and enters the interior of the housing H. Located at the top of the drive assembly 6; the drive mechanism mentioned in the first embodiment is installed inside the rainwater and sewage diversion device, and the drive component 2 is set as a cover located on top of the sewage outlet W. The drive component 2 can open the sewage outlet W by rising and close the sewage outlet W by falling. The reset component 3 is set as a float that can rise and fall synchronously with the liquid level inside the tank. When the reset component 3 rises and falls synchronously with the liquid level inside the tank, it can assist in the entry limit or release limit of the drive component 2, thereby realizing the corresponding lifting and lowering action of the drive component 2. Preferably, a flexible sealing structure 21 is provided at the top of the sewage outlet W. When the cover with a certain weight falls, it will contact the flexible sealing structure 21 to form a compression seal, further improving the sealing effect during drainage.

[0038] In this embodiment, when one end of the drive assembly 6 collects a small amount of rainwater, it can rotate counterclockwise around the hinge point with the support assembly 1. Simultaneously, the other end rises and drives the limiting rod 7 to rotate counterclockwise, thereby disengaging the second limiting part B. The float (i.e., the reset part 3, hereinafter the same) falls due to its own weight, and the first limiting part A also disengages. The cover (i.e., the drive part 2, hereinafter the same) falls due to its own weight, thus blocking the sewage outlet W. Conversely, when one end of the drive assembly 6 does not collect rainwater, the other end rotates clockwise around the hinge point with the support assembly 1 due to its own weight. As the water level drops, the driving force on the limit rod 7 disappears. The limit rod 7 rotates clockwise around the hinge position with the bracket assembly 1 and eventually enters the limit state of the second limit part B. As rainwater enters, the liquid level rises and drives the float to rise synchronously, thereby driving the first limit part A to also enter the limit position, but it is not yet limited at this time. When the rain stops, as the rainwater is gradually discharged, the float 3 descends synchronously with the liquid level and drives the connecting arm mechanism 5 to rotate counterclockwise. At this time, the first limit part A enters the limit state and returns to the initial position. At this time, the second limit part B limits the first limit part A to maintain the stability of the current working state.

[0039] Because the drive component 6 is used to distinguish between rainwater and sewage entering the rainwater and sewage diversion device, replacing the discrimination method in the prior art, it requires less space, has low installation requirements for the surrounding environment, and has little impact on the surrounding environment. Moreover, by flexibly changing the size of the drive container 61 in the drive component 6, the closing time of the sewage outlet can be flexibly adjusted as needed, thereby achieving the purpose of discharging heavily polluted first rainwater into the sewage pipe network.

[0040] As a further preferred embodiment of this example, since the drive container 61 only requires a small amount of water to move downwards, it can be effectively applied to the initial rainfall process (the thickness of the initial rainfall on the roof is 2-4 mm, and the thickness of the initial rainfall on the road is 6-8 mm). It can collect a small amount of initial rainwater as a power source, and the mass ratio of the drive container 61 and the drive rod 62 is set so that the drive container 61 can only move downwards when the amount of initial rainwater collected in the drive container 61 reaches a set value. After the drive container 61 moves downwards, it can be discharged into the sewage pipe network together with the initial rainwater flowing during the initial rainfall. This not only realizes the separation of rainwater and sewage in the mixed flow pipe, but also realizes that the initial rainwater is also treated as sewage during rainfall to achieve accurate separation.

[0041] [Third Embodiment]

[0042] The present invention also provides a control method for the rainwater and sewage separation device provided in the second embodiment, which specifically includes the following steps:

[0043] On sunny days, sewage enters the mixing chamber Q1 through the mixing inlet M. At this time, no rainwater enters the drive assembly 6 through the rainwater pipe P1, and no rainwater enters the rainwater chamber Q2. The rainwater chamber Q2 is in a hollow state. The float is kept in a low position due to the limiting action of the limiting rod 7, and the drive mechanism pulls up the cover to make it suspended in the air, thereby fully opening the sewage outlet W. The sewage then enters the sewage pipe through the sewage outlet W for collection and is sent to the sewage treatment plant for treatment.

[0044] During the initial rainfall, rainwater enters the mixing chamber Q1 through the mixing inlet M. Simultaneously, some rainwater enters the receiving drive container 61 through the rainwater pipe P1, causing the drive assembly 6 to rotate counterclockwise around the drive hinge axis. The drive rod 62 rises and triggers the push limit rod 7 to rotate counterclockwise, causing the drive arm 52 of the connecting arm mechanism 5 to disengage from the first limit part A between it and the connecting rod mechanism 4. The cover at the bottom of the connecting rod mechanism 4 falls directly due to its own weight, blocking the sewage outlet W. At this time, the liquid level of rainwater inside the mixing chamber Q1 gradually rises. When the rainwater height is high enough, it can pass through the mixing chamber Q1 and enter the rainwater chamber Q2, and be discharged through the rainwater outlet Y, and finally flow into the rainwater drain pipe and be discharged.

[0045] During rain, as rainwater continuously enters the mixing chamber Q1, the liquid level inside the mixing chamber Q1 rises continuously. The float 3 also rises synchronously due to buoyancy, driving the drive arm 52 to extend forward, causing the first limiting protrusion 521 to re-enter the first limiting groove 442, but it does not play a limiting role. At this time, the cover still falls due to its own gravity, blocking the sewage outlet W. After the rainwater passes through the mixing chamber Q1, it enters the rainwater chamber Q2 and is discharged through the rainwater outlet Y. The rainwater discharged through the rainwater outlet Y flows into the rainwater drain pipe and is discharged.

[0046] After the rain stops, the rainwater inside the mixing tank Q1 will flow from the through hole on the partition G to the rainwater tank Q2 and be discharged through the rainwater outlet Y. When the liquid level in the mixing tank Q1 drops to a certain level, the float moves downward under the influence of gravity and pulls the drive arm 52 to the left, so that the first limiting protrusion 521 enters the first limiting groove 422, thereby realizing that the first limiting part A re-enters the limiting position. While the first limiting part A is limited by the second limiting part B, as the float falls, the cover is vertically pulled up by the flexible transmission component, thereby opening the sewage outlet W. The remaining water in the mixing tank Q1 is discharged through the sewage outlet W.

[0047] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0048] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0049] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A driving mechanism, comprising a support assembly (1), wherein a driving member (2) is connected to one side of the support assembly (1) via a linkage mechanism (4), and a reset member (3) is connected to the other side of the support assembly (1) via a connecting arm mechanism (5); characterized in that: The bracket assembly (1) is also connected to a limiting rod (7) and a drive assembly (6) that cooperates with the limiting rod (7); the bracket assembly (1) is provided with a limiting part, and when the drive assembly (6) is activated, the limiting part releases the limiting effect on the drive member (2); after the drive assembly (6) is reset, the limiting effect of the limiting part on the drive member (2) is restored; The bracket assembly (1) is hinged to the linkage mechanism (4), the connecting arm mechanism (5), the limiting rod (7), and the drive assembly (6) respectively; The connecting arm mechanism (5) includes a connecting arm (51) and a driving arm (52). The connecting arm (51) is connected to the reset member (3) and is also hinged to the bracket assembly (1). The other end of the connecting arm (51) is also hinged to one end of the driving arm (52). The other end of the driving arm (52) is limited to the linkage mechanism (4). The drive assembly (6) includes a drive container (61) and a drive rod (62) that are fixedly connected, and one end of the drive rod (62) is hinged to the bracket assembly (1); One end of the limiting rod (7) is hinged to the bracket assembly (1), and the other end is limited to the connecting arm mechanism (5); A first limiting part (A) is formed between the connecting arm mechanism (5) and the linkage mechanism (4), and a second limiting part (B) is formed between the limiting rod (7) and the connecting arm mechanism (5). The first limiting part (A) includes a connecting rod protrusion (421) provided on the top of the connecting rod (42), and a first limiting groove (422) is formed between the connecting rod protrusion (421) and the outer wall of the connecting rod (42); the end of the driving arm (52) is provided with a first limiting protrusion (521) that limits and cooperates with the first limiting groove (422). The second limiting part (B) includes a driving arm protrusion (522) provided on the top of the driving arm (52), and a second limiting groove (523) is formed between the driving arm protrusion (522) and the outer wall of the driving arm (52); the end of the limiting rod (7) is limited and engaged with the second limiting groove (523).

2. The driving mechanism according to claim 1, characterized in that: The linkage mechanism (4) includes a flexible transmission member (41) connected to the drive member (2), and the top end of the flexible transmission member (41) is hinged to the support assembly (1) via a connecting rod (42).

3. The driving mechanism according to claim 2, characterized in that: A limit mechanism (43) is also provided on the outer periphery of the flexible transmission member (41).

4. A rainwater and sewage separation device, comprising a housing (H), wherein a mixed water inlet (M), a rainwater inlet (P), a rainwater outlet (Y), and a sewage outlet (W) are respectively provided on the housing (H), characterized in that: The drive mechanism as described in any one of claims 1-3 is installed inside the housing (H), and the drive component (2) is configured as a cover located on top of the sewage outlet (W), the reset component (3) is configured as a float that can rise and fall synchronously with the liquid level inside the housing, and the rainwater pipe (P1) passes through the rainwater inlet (P) into the housing (H) and is located on top of the drive assembly (6).

5. The control method for a rainwater and sewage separation device as described in claim 4, characterized in that: Includes the following steps: On sunny days, sewage enters the mixing chamber (Q1) through the mixing inlet (M), and no rainwater enters the drive assembly (6) and rainwater chamber (Q2). The reset component (3) is in a low position, the drive component (2) is suspended, and the sewage outlet (W) is fully open. During the initial rainfall, rainwater enters the mixing chamber (Q1) through the mixing inlet (M). At the same time, some rainwater enters the drive assembly (6), causing the drive assembly (6) to rotate counterclockwise around the drive hinge axis and triggering the push limit rod (7) to rotate counterclockwise. This causes the connecting arm mechanism (5) to disengage from the first limit part (A), and the drive component (2) falls to block the sewage outlet (W). The rainwater level in the mixing chamber (Q1) gradually rises and passes through the mixing chamber (Q1) into the rainwater chamber (Q2), and is discharged through the rainwater outlet (Y). During rain, as rainwater continuously enters, the liquid level inside the mixing chamber (Q1) causes the reset component (3) to rise continuously, and drives the connecting arm mechanism (5) to re-enter the first limit part (A) position but does not play a limiting role. The drive component (2) continues to fall and block the sewage outlet (W). After the rainwater passes through the mixing chamber (Q1), it enters the rainwater chamber (Q2) and is discharged through the rainwater outlet (Y). After the rain stops, the rainwater inside the mixing tank (Q1) flows through the through hole on the partition (G) to the rainwater tank (Q2) and is discharged through the rainwater outlet (Y). When the liquid level in the mixing tank (Q1) drops to the preset position, the reset member (3) moves down and drives the connecting arm mechanism (5) to the first limit part (A) and plays a limiting role. The first limit part (A) is limited by the second limit part (B). The reset member (3) falls down and pulls up the drive member (2) to open the sewage outlet (W). The remaining water in the mixing tank (Q1) is discharged through the sewage outlet (W).

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