Pipeline flow restriction and sediment scouring device, method of use, and sewer system

Abstract

The present application relates to the technical field of urban drainage sediment control, and particularly relates to a pipeline flow limiting and sediment flushing device, a use method and a sewage discharge system. The pipeline flow limiting and sediment flushing device comprises: a floating assembly, which comprises a floating ball and a connecting rope, the floating ball is suitable to be arranged at an opening of a containing space of a main well, a side wall of the containing space is suitable to be provided with a flow channel, a through part of the main well and the flow channel is provided with a water passing hole, and one end of the connecting rope is connected with the floating ball; a base is arranged at the bottom of the water passing hole, and the base is provided with a plug-in hole; a gate assembly is suitable to be arranged in the water passing hole, and the gate assembly comprises a gate and a clamping piece arranged in the gate, one end of the connecting rope away from the floating ball is connected with the clamping piece, the clamping piece is suitable to move up and down along the gate, the gate is suitable to rotate around the base, and the clamping piece is suitable to be matched with the plug-in hole. The present application solves the problem that the gate of the pipeline cannot be closed and opened according to the change of water flow, so that the problems of water storage and flushing of sediments cannot be solved.

Description

Technical Field

[0001] This invention relates to the field of urban drainage sediment control technology, specifically to a pipe flow restriction and sediment flushing device, its usage method, and a sewage system. Background Technology

[0002] Urban combined sewer systems are responsible for transporting rainwater and sewage. During the dry season, due to lower sewage flow and slower flow velocity within the combined sewer pipes, sediment deposition is likely to occur. This sediment layer can lead to anaerobic reactions within the underground drainage network, producing toxic gases such as hydrogen sulfide. It also increases the roughness coefficient, further accelerating the deposition process. Once organic and inorganic deposits have fully solidified, a permanent sediment layer can form, significantly weakening the combined sewer network's flow capacity during rainy days. Furthermore, the concentration of combined sewage treated at wastewater treatment plants is generally lower during the rainy season. Even initial rainwater runoff, due to varying hydraulic retention times within the pipe system, dilutes the overall sewage concentration, leading to unstable operating conditions at wastewater treatment plants. Therefore, the importance of preventing sediment erosion during the dry season and limiting rainwater flow during the rainy season is evident.

[0003] The devices for controlling sediment in drainage pipe networks have certain limitations during operation, and the gates in the pipes cannot be closed and opened according to changes in water flow, resulting in low gate utilization efficiency and inability to complete the tasks of water storage and sediment flushing. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defect that the gate of the pipeline in the prior art cannot be closed and opened according to the change of water flow, resulting in the inability to complete water storage and flushing of sediments, thereby providing a pipeline flow restriction and sediment flushing device, usage method and sewage system.

[0005] To address the above problems, the present invention provides a pipe flow limiting and sediment flushing device, comprising:

[0006] A floating assembly, comprising a floating ball and a connecting rope, wherein the floating ball is adapted to be located in the opening of the receiving space of the main well, the side wall of the receiving space is adapted to be provided with a flow channel, a water passage hole is provided at the connection between the main well and the flow channel, and one end of the connecting rope is connected to the floating ball.

[0007] A base is located at the bottom of the water passage hole, and the base is provided with a plug-in hole;

[0008] A gate assembly, the gate assembly being adapted to be disposed within a water passage hole, the gate assembly including a gate and a snap-fit ​​member passing through the gate, the end of the connecting rope opposite to the floating ball being connected to the snap-fit ​​member, the snap-fit ​​member being adapted to move up and down along the gate, the gate being adapted to rotate around the base, and the snap-fit ​​member being adapted to a plug hole.

[0009] Optionally, the length of the connecting rope is greater than the straight-line distance from the floating ball to the snap-fit.

[0010] Optionally, a baffle is provided on the side wall of the main well, the baffle having an opening, and an accommodating space is formed between the baffle and the bottom surface of the main well.

[0011] Optionally, the flow channel is arranged on the side wall at the bottom of the accommodating space.

[0012] Optionally, the base has a rotating hole at its center, and the gate has a rotating shaft. The rotating end of the rotating shaft is inserted into the rotating hole to make the gate rotate relative to the base.

[0013] Optionally, the rotating shaft is integrally formed with the gate.

[0014] Optionally, the side wall of the rotating shaft is provided with a groove, and a snap-fit ​​member is provided in the groove, the snap-fit ​​member being movable along the length direction of the groove.

[0015] Optionally, the base has an external thread on its outer periphery, and the rotating shaft has an internal thread, with the external thread and the internal thread being adapted to each other.

[0016] Optionally, the height of the water passage hole is greater than the height of the gate.

[0017] Optionally, it also includes a pulley assembly comprising at least two fixed pulleys, each of which is fixed to the inner wall of the receiving space, and the connecting rope passing sequentially through the groove of each fixed pulley.

[0018] Optionally, it also includes a limiting member disposed on the inner wall at the top of the flow channel, the limiting member being used to limit the rotation angle of the gate.

[0019] A sewage system comprising at least two of the aforementioned pipe flow restriction and sediment flushing devices.

[0020] Optionally, the adjacent pipe flow restrictor and the main well of the sediment flushing device are connected by a flow channel.

[0021] A method for using a pipe flow restriction and sediment flushing device: In the flow restriction state, a floating ball is placed at the opening of the receiving space, a snap-fit ​​is inserted into the insertion hole, and a gate is fixedly connected to the base to close the water passage; in the flushing state, the floating ball floats on the water surface, the snap-fit ​​moves upward and separates from the insertion hole, and the gate rotates to allow water in the receiving space to flow into the flow channel.

[0022] Optionally, during flushing, when the floating ball floats to a preset height, the connecting rope between the floating ball and the snap-fit ​​is taut, the snap-fit ​​separates from the insertion hole, and under the action of water pressure, the gate slowly rotates upward relative to the base until it rotates 90°. Then, the limiting component restricts the rotation of the gate, and the water and sediment are discharged during the gate's rotation. After the water and sediment are discharged, the floating ball slowly descends with the water level, and the gate itself slowly falls along the original rotation path under the action of gravity until it is completely closed, and the snap-fit ​​enters the insertion hole.

[0023] The technical solution of this invention has the following advantages:

[0024] 1. The pipe flow restriction and sediment flushing device provided by the present invention includes: a floating assembly comprising a floating ball and a connecting rope, the floating assembly being adapted to be disposed at the opening of the receiving space of the main well, the side wall of the main well being adapted to be provided with a flow channel, a water passage hole being provided at the connection between the main well and the flow channel, and one end of the connecting rope being connected to the floating ball; a base being disposed at the bottom of the water passage hole, the base being provided with a plug hole; and a gate assembly being disposed within the water passage hole, comprising a gate and a snap-fit ​​component passing through the gate, the end of the connecting rope away from the floating ball being connected to the snap-fit ​​component, the snap-fit ​​component being adapted to move up and down along the gate, the gate being adapted to rotate around the base, and the snap-fit ​​component being adapted to fit the plug hole. In the flow restriction state, the floating ball is placed at the opening of the receiving space, the snap-fit ​​component is inserted into the plug hole, and the gate is fixedly connected to the base to close the connection; in the flushing state, the floating ball floats on the water surface, the snap-fit ​​component moves upward and separates from the plug hole, and the gate rotates to allow water in the receiving space to flow into the flow channel. In the flow-limited state, because the water flow cannot float the floating objects, the floating ball, under the influence of gravity, is positioned at the opening of the containment space. The connector is inserted into the connector hole, and the gate closes, preventing water from entering the flow channel. In the flushing state, due to the buoyancy of the water flow, the floating ball floats on the water surface. The connector moves upward and separates from the connector hole. The gate rotates, allowing water and sediment in the containment space to enter the flow channel. This allows the gate to close and open according to changes in water flow, offering advantages such as simple structure and automatic rotation, and solving the problem of gates not being able to close and open according to changes in water flow.

[0025] 2. The pipe flow limiting and sediment flushing device provided by the present invention has a connecting rope with a length greater than the straight-line distance from the floating ball to the snap-fit, so that the connecting rope has redundancy when the floating ball is in the opening, avoiding the problem of the snap-fit ​​separating from the insertion hole when the floating ball slightly leaves the opening.

[0026] 3. The pipe flow restriction and sediment flushing device provided by the present invention has a baffle on the side wall of the main well, the baffle has an opening, and an accommodating space is formed between the baffle and the bottom surface of the main well. Water or sediment entering from the main well enters into the accommodating space through the opening.

[0027] 4. The pipe flow restriction and sediment flushing device provided by the present invention has a flow channel arranged on the side wall at the bottom of the receiving space so that the sediment at the bottom of the receiving space is discharged into the flow channel.

[0028] 5. The pipeline flow restriction and sediment flushing device provided by the present invention has a rotating hole at the center of the base and a rotating shaft on the gate. The rotating end of the rotating shaft is inserted into the rotating hole to make the gate rotate relative to the base, thereby realizing the relative rotation of the gate relative to the base.

[0029] 6. The pipeline flow restriction and sediment flushing device provided by the present invention has a groove on the side wall of the rotating shaft, and a snap-fit ​​component is provided in the groove. The snap-fit ​​component can move along the length direction of the groove to realize the movement of the snap-fit ​​component relative to the gate.

[0030] 7. The pipeline flow restriction and sediment flushing device provided by the present invention has an external thread on the outer periphery of the base and an internal thread on the rotating shaft. The external thread and the internal thread are adapted to each other, which makes the rotation of the rotating shaft and the base more stable and prevents the gate from rotating rapidly when subjected to large water pressure. On the other hand, due to the threaded engagement, the rotating shaft will drive the gate to move towards or away from the base when it rotates. When the gate moves away from the base, a gap will appear at the bottom of the gate to allow sediment to flow out from the bottom of the gate.

[0031] 8. In the pipeline flow restriction and sediment flushing device provided by the present invention, the height of the connection between the main well and the flow channel is greater than the height of the gate, so as to avoid the gate colliding with the top of the connection during the rotation and rise process.

[0032] 9. The pipe flow limiting and sediment flushing device provided by the present invention further includes a pulley assembly, which includes at least two fixed pulleys. Each fixed pulley is fixed to the inner wall of the accommodating space. The connecting rope passes through the groove of each fixed pulley in sequence to avoid the floating ball and the snap-fit ​​being unsupported. The fixed pulleys provide support for the connecting rope.

[0033] 10. The pipeline flow restriction and sediment flushing device provided by the present invention further includes a limiting member, which is disposed on the inner wall at the top of the flow channel and limits the rotation angle of the gate.

[0034] 11. The sewage discharge system provided by this invention includes at least two of the aforementioned pipe flow restriction and sediment flushing devices. The inlet of the main well of adjacent pipe flow restriction and sediment flushing devices is connected to the outlet of the flow channel, forming a multi-stage interception from upstream to downstream. During dry weather, the sediment is gradually transported to the sewage treatment plant through the opening and closing of the gate, reducing the frequency of dredging, lowering the roughness coefficient caused by the sediment layer, thereby weakening the degradation of organic pollutants, reducing sediment deposition during dry weather, and helping to increase the influent concentration of the sewage treatment plant. During rainy weather, the initial rainwater is intercepted through flow restriction. After the initial rainwater sediment has fully settled, it is flushed downstream with a large amount of water, reducing the deposition process. Attached Figure Description

[0035] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0036] Figure 1 This is a schematic diagram of the pipeline flow limiting and sediment flushing device in the flow limiting state provided in an embodiment of the present invention;

[0037] Figure 2 This is a schematic diagram of the pipeline flow restriction and sediment flushing device in the flushing state provided in an embodiment of the present invention;

[0038] Figure 3 This is a schematic diagram of a gate provided in an embodiment of the present invention;

[0039] Figure 4 This is a schematic diagram illustrating the engagement of the rotating shaft and the base in an embodiment of the present invention;

[0040] Figure 5 This is a schematic diagram of the sewage system provided in an embodiment of the present invention during rain.

[0041] Figure 6 This is a schematic diagram of the sewage system provided in an embodiment of the present invention during flushing on a sunny day.

[0042] Figure 7 This is a schematic diagram of the sewage system provided in an embodiment of the present invention when storing water on a sunny day.

[0043] Explanation of reference numerals in the attached drawings: 1. Main well; 2. Baffle; 3. Floating ball; 4. Fixed pulley; 5. Connecting rope; 6. Water passage hole; 7. Limiting component; 8. Flow channel; 9. Gate assembly; 10. Base; 11. Sediment; 12. Gate; 13. Groove; 14. Snap-fit ​​component; 15. Insertion hole; 16. Rotating shaft; 17. Rotating hole; 18. External thread; 19. Accommodation space. Detailed Implementation

[0044] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. 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.

[0045] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," 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 the 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 the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0046] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0047] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0048] like Figure 1 A specific embodiment of the pipeline flow restriction and sediment flushing device shown in Figure 7 includes: a floating ball assembly 3 and a gate assembly 9, wherein the gate assembly 9 is adapted to be located at the water passage 6 through which the main well 1 and the flow channel 8 are connected.

[0049] like Figure 1 , Figure 2As shown, a baffle 2 with an opening is provided on the side wall of the main well 1, and the baffle 2 is inclined, that is, it slopes downward from the side wall of the main well 1 towards the center of the main well 1. Figure 1 As shown, a receiving space 19 is formed between the baffle 2 and the bottom surface of the main well 1. The receiving space 19 is suitable for accommodating sediment 11 and water flow. A horizontally arranged flow channel 8 is provided at the bottom of the side wall of the main well 1. It should be noted that the central axis of the main well 1 is perpendicular to the central axis of the flow channel 8.

[0050] like Figure 1 , Figure 2 As shown, the floating assembly includes a floating ball 3 and a connecting rope 5. The floating ball 3 is adapted to be placed at the opening of the receiving space 19 of the main well 1, and one end of the connecting rope 5 is fixedly connected to the floating ball 3.

[0051] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the gate assembly 9 includes a gate 12 and a snap-fit ​​member 14 inserted inside the gate 12, wherein the end of the connecting rope 5 facing away from the floating ball 3 is fixedly connected to the snap-fit ​​member 14. Figure 4 As shown, the gate 12 is provided with a rotating shaft 16, that is, the gate 12 is provided with an integrally formed rotating shaft 16 in the middle position. The side wall of the rotating shaft 16 is provided with a groove 13, and a snap-fit ​​part 14 is provided in the groove 13 so that the snap-fit ​​part 14 can move up and down along the length direction of the groove 13. The rotating shaft 16 is provided with an internal thread and a rotating end is provided at the center of the rotating shaft 16.

[0052] like Figure 1 , Figure 2 and Figure 4 As shown, a base 10 is provided at the bottom of the water passage 6, and a insertion hole 15 is provided on the side wall of the base 10, and the insertion hole 15 is correspondingly provided with the snap-fit ​​component 14. Figure 4 As shown, the outer peripheral wall of the base 10 is provided with an external thread 18, which is adapted to the internal thread. Figure 4 As shown, a rotating hole 17 is provided at the center of the base 10, and the rotating end of the rotating shaft 16 extends into the rotating hole 17 to allow the gate 12 to rotate relative to the base 10. To facilitate rotation, the height of the water passage hole 6 is greater than the height of the gate 12. To restrict the rotation of the gate 12, a limiting member 7 is provided at the top of the inner wall of the flow channel 8. Specifically, the limiting member 7 is a magnet.

[0053] To provide support for the connecting rope 5, a pulley assembly is also included. The pulley assembly includes two fixed pulleys 4 fixed to the inner wall of the connecting well, and the connecting rope 5 passes through the grooves 13 of each fixed pulley 4 in sequence. It should be noted that when the floating ball 3 is at the opening of the receiving space 19, the connecting rope 5 is in a slack state, that is, the connecting rope 5 has a redundancy.

[0054] A sewage system, such as Figure 5 , Figure 6 , Figure 7 As shown, it includes three of the above-mentioned pipe flow restriction and sediment flushing devices, and the main wells 1 of adjacent pipe flow restriction and sediment flushing devices are connected through flow channels 8.

[0055] A method of using a pipeline flow restriction and sediment flushing device includes the following steps:

[0056] Under the flow-limited state, water or sediment 11 entering from the main well 1 enters the receiving space 19 through the opening between the floating ball 3 and the baffle 2. Because the total water flow in the receiving space 19 is small, it cannot cause the floating ball 3 to float. The snap-fit ​​part 14 is inserted into the insertion hole 15, and the gate 12 is fixedly connected to the base 10. The gate 12 cannot rotate and remains closed. Under the flushing state, the receiving space 19 cannot hold the water or sediment 11, causing the floating ball 3 to float under the buoyancy of the water flow. When the floating ball 3 floats to the preset height, the connecting rope 5 between the floating ball 3 and the locking piece 14 is taut. After the floating ball 3 rises further, the locking piece 14 separates from the insertion hole 15. Under the pressure of the water flow, the gate 12 rotates relative to the base 10. Since the base 10 and the rotating shaft 16 of the gate 12 are threadedly connected, the gate 12 will slowly rise during rotation. After rotating 90°, the limiting piece 7 restricts the rotation of the gate 12, and the water flow and sediment 11 are discharged during the rotation of the gate 12. After the water flow and sediment 11 are discharged, the floating ball 3 slowly descends with the water level. The gate 12 itself falls slowly along the original rotation path under the action of gravity until it is completely closed, and the locking piece 14 enters the insertion hole 15. Since the height of the water passage hole 6 is higher than the height of the gate 12, some water will flow into the flow channel 8 through the gap between the water passage hole 6 and the gate 12.

[0057] The sewage system provided in this application includes the following three stages:

[0058] (1) During the dry season water storage stage, such as Figure 7 As shown, during dry weather, the gate 12 is closed, and the sewage entering from the upper channel 8 accumulates inside the main well 1. The water level rises continuously, and the sediment 11 gradually settles in front of the weir. Since the water level is lower than the opening, the connecting rope 5 connected to the floating ball 3 is in a slack state, and the floating ball 3 is placed on the baffle 2. Multiple devices can be in the water storage stage at the same time.

[0059] (2) Dry weather erosion stage, such as Figure 6As shown, as the water level inside the main well 1 rises continuously, the floating ball 3 begins to rise under the action of buoyancy, the connecting rope 5 changes from a slack state to a taut state, the water level continues to rise, and due to the water pressure, the gate 12 begins to rotate rapidly around the rotating shaft 16. During the rotation, the gate 12 also moves upward. When the gate 12 rotates to 90 degrees, the limiting member 7 magnetically holds the gate 12. During this process, a large amount of water is released into the lower flow channel 8, and the bottom sediment 11 is carried to the next main well 1 with the water flow. When the water level continues to drop, the suction provided by the limiting member 7 is not enough to support the weight of the entire gate 12. The gate 12 rotates along the external thread 18 under the action of gravity and finally returns to the closed state. The snap-fit ​​member 14 moves downward along the groove 13 until it enters the insertion hole 15, and enters the water storage stage again. With a series of devices connected in series, the sediment 11 is gradually flushed downstream and finally enters the sewage treatment plant.

[0060] (3) Rain scouring stage, such as Figure 5 As shown, rainwater enters the main well 1 through the rainwater collection pipe. A floating ball 3 is placed statically on the baffle 2, allowing the rainwater to accumulate inside the main well 1, thus limiting the flow and ensuring water transport. The initial rainwater sediment 11 settles around the floating ball 3. As the rainfall continues, the water level in the main well 1 gradually rises, and the floating ball 3 floats to a preset height under buoyancy. The connecting rope 5 moves upward, pulling the locking rod out of the insertion hole 15. Simultaneously, a large amount of rainwater falls vertically and freely, violently impacting the sediment 11 inside the inspection well. Under water pressure, the gate 12 begins to rotate upward, and the initial rainwater sediment 11 and the sediment 11 in the main well 1 move downstream with the large volume of water. When the rainwater volume is large enough, the gate 12 remains open for extended periods, without affecting the flood discharge capacity of the sewage system. When the rainfall intensity weakens until the rain stops, the floating ball 3 falls back onto the baffle 2, the connecting rope 5 is in a slack state, the gate 12 is reset to the closed state, and the snap-fit ​​14 is reinserted into the insertion hole 15 of the base 10, entering the dry weather water storage stage.

[0061] As an alternative implementation, the number of pipe flow restriction and sediment flushing devices in the sewage system can be two, four, five or even more.

[0062] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A pipe flow restriction and sediment flushing device, characterized in that, include: A floating assembly, comprising a floating ball (3) and a connecting rope (5), wherein the floating ball (3) is adapted to be located in the opening of the receiving space (19) of the main well (1), the side wall of the receiving space (19) is adapted to be provided with a flow channel (8), and a water passage hole (6) is provided at the connection between the main well (1) and the flow channel (8), and one end of the connecting rope (5) is connected to the floating ball (3); The base (10) is located at the bottom of the water passage hole (6), and the base (10) is provided with a plug hole (15). Gate assembly (9), the gate assembly (9) is adapted to be disposed in the water passage hole (6), the gate assembly (9) includes a gate (12) and a snap-fit ​​member (14) passing through the gate (12), the end of the connecting rope (5) away from the floating ball (3) is connected to the snap-fit ​​member (14), the snap-fit ​​member (14) is adapted to move up and down along the gate (12), the gate (12) is adapted to rotate around the base (10), and the snap-fit ​​member (14) is adapted to fit the insertion hole (15); The base (10) has a rotating hole (17) at its center, and the gate (12) has a rotating shaft (16). The rotating end of the rotating shaft (16) is inserted into the rotating hole (17) to make the gate (12) rotate relative to the base (10). The base (10) has an external thread (18) on its outer periphery, and the rotating shaft (16) has an internal thread. The external thread (18) is adapted to the internal thread. The height of the water passage (6) is greater than the height of the gate (12).

2. The pipeline flow restriction and sediment flushing device according to claim 1, characterized in that, The length of the connecting rope (5) is greater than the straight-line distance from the floating ball (3) to the snap fastener (14).

3. The pipeline flow restriction and sediment flushing device according to claim 1, characterized in that, The main well (1) has a baffle (2) on its side wall. The baffle (2) has an opening and a receiving space (19) is formed between the baffle (2) and the bottom surface of the main well (1).

4. The pipeline flow restriction and sediment flushing device according to claim 1, characterized in that, The flow channel (8) is arranged on the side wall at the bottom of the accommodating space (19).

5. The pipeline flow restriction and sediment flushing device according to claim 1, characterized in that, The rotating shaft (16) and the gate (12) are integrally formed.

6. The pipeline flow restriction and sediment flushing device according to claim 5, characterized in that, The rotating shaft (16) has a groove (13) on its side wall, and a snap-fit ​​member (14) is provided in the groove (13). The snap-fit ​​member (14) can move along the length direction of the groove (13).

7. The pipeline flow restriction and sediment flushing device according to any one of claims 1-6, characterized in that, It also includes a pulley assembly comprising at least two fixed pulleys (4), each of which is fixed to the inner wall of the receiving space (19), and the connecting rope (5) passes through the groove (13) of each fixed pulley (4) in sequence.

8. The pipeline flow restriction and sediment flushing device according to claim 7, characterized in that, It also includes a limiting member (7), which is located on the inner wall at the top of the flow channel (8) to limit the rotation angle of the gate (12).

9. A sewage discharge system, characterized in that, Includes at least two pipe flow restriction and sediment flushing devices as described in any one of claims 1-8.

10. The sewage system according to claim 9, characterized in that, The adjacent pipe flow restriction and sediment flushing device main well (1) are connected by a flow channel (8).

11. A method of using a pipeline flow restriction and sediment flushing device, for using the pipeline flow restriction and sediment flushing device according to claim 1, characterized in that, In the flow-limited state, the floating ball (3) is placed at the opening of the receiving space (19), the snap-fit ​​piece (14) is inserted into the insertion hole (15), and the gate (12) is fixedly connected to the base (10) to close the water passage hole (6); in the flushing state, the floating ball (3) floats on the water surface, the snap-fit ​​piece (14) moves upward and separates from the insertion hole (15), and the gate (12) rotates to allow the water in the receiving space (19) to flow into the flow channel (8).

12. The method of using the pipeline flow restriction and sediment flushing device according to claim 11, characterized in that, When the floating ball (3) floats to the preset height during the flushing process, the connecting rope (5) between the floating ball (3) and the snap-fit ​​part (14) is taut. The snap-fit ​​part (14) separates from the insertion hole (15). Under the action of water pressure, the gate (12) slowly rotates upward relative to the base (10). After rotating 90°, the limiting part (7) restricts the rotation of the gate (12). Water and sediment (11) are discharged during the rotation of the gate (12). After the water and sediment (11) are discharged, the floating ball (3) slowly descends as the water level drops. The gate (12) itself is subjected to gravity and slowly falls along the original rotation path until it is completely closed. The snap-fit ​​part (14) enters the insertion hole (15).

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