A municipal engineering water supply and drainage system

Abstract

This application discloses a municipal engineering water supply and drainage system, relating to the field of municipal construction, including a water pipe 1 and a water pipe 2 connected to each other. The water pipe 1 has a groove along its length, into which an extension pipe is embedded. The water pipe 1 is equipped with a cylinder for driving the extension pipe to extend or retract into the groove. A filter screen is installed on the extension pipe. The extension pipe is inserted into the water pipe 2 to connect the water pipe 1 and the water pipe 2. A replacement ring box is installed on the extension pipe, with a cavity for collecting debris. When the extension pipe is inserted into the water pipe 2, the replacement ring box is fitted onto the outer wall of the water pipe 2. When the extension pipe is submerged in the groove, the replacement ring box connects the water pipe 1 and the water pipe 2. This application, through the installation of the replacement ring box and the extension pipe, allows debris accumulated in front of the filter screen to be discharged into the cavity, clearing the waterway and reducing the frequency of manual pipe cleaning. It also discharges debris into the water body, preventing the debris from rotting and polluting the water.

Description

Technical Field

[0001] This application relates to the field of municipal construction, and in particular to a municipal engineering water supply and drainage system. Background Technology

[0002] In the water supply and drainage systems of municipal engineering, the basic task of the water supply system is to draw water from water sources, purify it, and supply it to urban residents, public and mining enterprises, transportation, etc.; the basic task of the municipal drainage system is to systematically remove and treat various polluted wastewater and rainwater and snowmelt in the city.

[0003] In water supply and drainage systems, related equipment is connected through water pipes. Both water supply and drainage pipes require filters to prevent foreign objects from entering. However, with prolonged use, these filters accumulate a lot of foreign objects, causing blockages. This necessitates regular pipe cleaning to ensure the normal operation of the system. In some special locations, pipes tend to clog more frequently than in other areas, such as water intake pipes at river inlets. These blockages are often caused by larger foreign objects, requiring frequent cleaning.

[0004] Regarding the aforementioned technologies, frequent manual cleaning of clogged water pipe filters requires significant manpower and resources, and the long-term immersion of debris in water can affect water quality. Summary of the Invention

[0005] In order to reduce the frequency of water pipe cleaning and remove debris from the water pipes, this application provides a municipal engineering water supply and drainage system.

[0006] This application provides a municipal engineering water supply and drainage system, which adopts the following technical solution:

[0007] A municipal engineering water supply and drainage system includes a first water pipe and a second water pipe, which are connected. The first water pipe has a groove along its length, and an extension pipe is embedded in the groove. The first water pipe is equipped with a cylinder for driving the extension pipe to extend or retract into the groove. The extension pipe is equipped with a filter screen. The extension pipe is inserted into the second water pipe to connect the first water pipe and the second water pipe. The extension pipe is equipped with a replacement ring box, which has a cavity for collecting debris. When the extension pipe is inserted into the second water pipe, the replacement ring box is fitted onto the outer wall of the second water pipe. When the extension pipe is submerged in the groove, the replacement ring box connects the first water pipe and the second water pipe.

[0008] By adopting the above technical solution, when water pipe one and water pipe two are normally connected, the extension pipe is inserted into water pipe two, and the cylinder is in the extended state. When a large amount of foreign matter accumulates in front of the filter screen and needs to be cleaned, the cylinder is driven to retract, the extension pipe slides to be submerged in the mounting groove, and the filter screen also moves away from the accumulated foreign matter along with the extension pipe. The replacement ring box replaces the extension pipe to connect water pipe one and water pipe two. The accumulated foreign matter is drawn into the receiving cavity under the impact of the water flow. The cylinder is restarted again to insert the extension pipe into water pipe two to complete the reset. At this time, the foreign matter is in the receiving cavity, but the receiving cavity is not connected to the water body, and the water flow is also unblocked. Only the replacement ring box needs to be cleaned periodically by personnel. Since the replacement ring box also has a certain volume, the above operation process can be repeated many times before the replacement ring box is cleaned by personnel, thus reducing the frequency of personnel unblocking the water flow.

[0009] Optionally, the extension tube is rotatable, and the first water pipe is provided with a power assembly for driving the extension tube to rotate. The power assembly includes a turntable and a motor. The turntable is concentrically rotatably connected to the first water pipe, and the cylinder is fixedly connected to the turntable. The telescopic end of the cylinder is connected to the replacement ring box. The motor is used to drive the turntable to rotate.

[0010] By adopting the above technical solution, the entire extension pipe and the replacement ring box rotate under the action of the power component, which can disturb the water flow and allow substances that could have passed through the filter screen but could not pass through the filter screen due to the accumulation of debris to flow smoothly through the filter screen, so that the containment cavity only contains part of the debris; at the same time, the rotation can also prevent the debris from piling up in the containment cavity and improve the utilization rate of the containment cavity volume.

[0011] Optionally, a compression ring plate is slidably connected in the receiving cavity along the length of the water pipe, one end of the cylinder passes through the receiving cavity and is fixedly connected to the compression ring plate, and a displacement sensor for detecting the moving distance of the cylinder's telescopic end is provided on the fixed end of the cylinder.

[0012] By adopting the above technical solution, when the cylinder extends and retracts, the squeezing ring plate abuts against the inner wall of the receiving cavity, causing the replacement ring box to slide. After the extension pipe is inserted into the second water pipe, the cylinder can continue to extend, thereby driving the squeezing ring plate to continue to move, squeezing the debris in the receiving cavity to reduce its volume, thereby increasing the amount of debris that the receiving cavity can hold. During the next retraction of the cylinder, the cylinder can control the retraction distance according to the data on the displacement sensor, so that the debris will not leave the receiving cavity and return to the water.

[0013] Optionally, the extrusion ring plate is connected to an isolation plate via a connecting assembly. The connecting assembly includes an installation rod and a limiting rod. A sliding groove is formed on the side wall of the extrusion ring plate away from the cylinder along the length of the water pipe. The installation rod is slidably connected in the sliding groove. A spring is also provided in the sliding groove to drive the installation rod to slide and disengage from the sliding groove. One end of the installation rod extending out of the sliding groove is fixedly connected to the isolation plate. A disengagement groove is formed on the installation rod in its radial direction. The limiting rod is slidably connected in the disengagement groove. A spring is provided in the disengagement groove to drive the limiting rod out of the disengagement groove. The inner wall of the sliding groove has a limiting groove for the insertion of the limiting rod and a disengagement groove for the insertion of the limiting rod into the inner wall of the sliding groove. As the installation rod penetrates deeper into the sliding groove, the limiting rod is inserted into the disengagement groove.

[0014] By adopting the above technical solution, after the cylinder completes the retraction and the debris enters the receiving cavity, during the cylinder's extension process, the isolation plate will abut against the debris. When the debris can no longer be squeezed into the receiving cavity to the limit of the pressure that the cylinder can provide, the spring initially contracts, thereby causing the limiting rod one to move from the limiting groove to the position aligned with the release groove two. At this time, the limiting rod one is disengaged from the release groove one and enters the release groove two under the action of the spring two. At this time, the mounting rod is ejected from the sliding groove under the action of the spring one. At this time, the isolation plate is fixed in the receiving cavity relative to the replacement ring box under the action of friction with the side wall of the receiving cavity. Thus, the receiving cavity is divided into a compartment filled with debris. The debris in this compartment will not return to the water body again during the next cylinder retraction process.

[0015] Optionally, there are multiple isolation plates, which are arranged along the length of the water pipe, and adjacent isolation plates are connected by a connecting component; a release groove three is formed on the isolation plate along the length of the water pipe, and an abutment rod is slidably connected in the release groove three; a limit groove two is formed in the isolation plate, and the limit groove two connects the release groove three and the sliding groove; a limit rod two is slidably connected in the limit groove two; when the mounting rod is located in the sliding groove, one end of the limit rod two abuts against the mounting rod, and the other end of the limit rod two abuts against the abutment rod; a guide surface is provided at one end of the limit rod two near the abutment rod two, and the guide surface pushes the limit rod two into the inner wall of the release groove three when the abutment rod slides into the release groove three.

[0016] By adopting the above technical solution, when the first isolation plate is squeezed, the subsequent isolation plates cannot be squeezed due to the action of the abutment rod and the second limiting rod, thus achieving the effect of only one isolation plate being detached with each squeeze; if the cylinder completes another contraction and extension, there is no mounting rod in the sliding groove at this time; after the next isolation plate abuts against the debris, the abutment rod receives the squeeze and obtains a force to be inserted into the third detachment groove. This force is transmitted to the guide surface, thereby driving the second limiting rod to be inserted into the side wall of the third detachment groove, so that the abutment rod can be inserted into the third detachment groove; at this time, the isolation plate can be detached; the above solution can seal the receiving cavity into more compartments for stacking debris.

[0017] Optionally, the embedding groove is provided with a spring three for driving the extension tube out of the embedding groove.

[0018] By adopting the above technical solution, the spring-driven extension tube automatically inserts into the second water pipe, thereby avoiding the situation where there are no foreign objects in the receiving cavity, but the isolation plate abuts against the inner wall of the receiving cavity and pushes the substitute ring box to slide, causing the isolation plate to detach.

[0019] Optionally, the replacement ring box includes a sealing plate and a bending plate; one end of the cylinder passes through the bending plate, the bending plate is fixedly connected to the extension tube, and the sealing plate is detachably connected to the end of the bending plate away from the cylinder.

[0020] By adopting the above technical solution, the replacement ring box can be disassembled, thereby cleaning the debris in the receiving cavity.

[0021] Optionally, the filter screen is provided with baffles.

[0022] By adopting the above technical solution, the turbulence effect during the rotation of the extension tube is increased.

[0023] In summary, this application includes the following beneficial technical effects:

[0024] 1. By setting up a replacement ring box and an extension pipe, this application allows the debris piled up in front of the filter screen to be discharged into the receiving cavity under the action of water flow, thus clearing the water passage and reducing the frequency of manual cleaning of the water pipes; at the same time, it also discharges the debris into the water body, preventing the debris from rotting and emitting odors that pollute the water body.

[0025] 2. By using an isolation plate, a displacement sensor, and a connecting assembly, this application enables the receiving cavity to hold more miscellaneous items, thus making full use of its space;

[0026] 3. By setting the limiting rod 2 and the abutment rod, this application can divide the container into multiple compartments, which can further make full use of the volume of the container cavity and accommodate more debris while ensuring that the debris does not return to the water. Attached Figure Description

[0027] Figure 1 This is an overall structural diagram of a municipal engineering water supply and drainage system according to this application;

[0028] Figure 2 yes Figure 1 The structural sectional view in the middle;

[0029] Figure 3 This is to highlight Figure 2 Enlarged view of part of the structure of the middle isolation plate.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1. Water pipe one; 11. Embedded groove; 111. Spring three; 12. Turntable; 13. Motor; 14. Transmission gear; 15. Cylinder; 2. Water pipe two; 31. Extension pipe; 32. Replacement ring box; 321. Receiving cavity; 322. Sealing plate; 323. Bending plate; 33. Filter screen; 331. Baffle plate; 41. Extrusion ring plate; 411. Sliding groove; 412. Limiting groove one; 413. Disengagement groove two; 414. Spring one; 42. Displacement sensor; 43. Isolation plate; 51. Mounting rod; 511. Disengagement groove one; 512. Spring two; 52. Limiting rod one; 61. Disengagement groove three; 62. Abutment rod; 63. Limiting groove two; 64. Limiting rod two; 65. Guide surface. Detailed Implementation

[0032] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0033] This application discloses a municipal engineering water supply and drainage system. (Refer to...) Figure 1 and Figure 2 The system includes a water pipe 1 and a water pipe 2. The water pipe 1 has a groove 11 along its length. An extension pipe 31 is slidably connected in the groove 11. A filter screen 33 is provided at the end of the extension pipe 31 away from the water pipe 1. The extension pipe 31 is inserted into the water pipe 2 to connect the water pipe 1 and the water pipe 2. A replacement ring box 32 is also provided at the end of the extension pipe 31 away from the water pipe 1. The replacement ring box 32 has a receiving cavity 321 for storing debris.

[0034] A turntable 12 is rotatably connected to the outer wall of water pipe 1. A cylinder 15 is provided on the turntable 12. The telescopic end of the cylinder 15 is connected to the replacement ring box 32. A motor 13 is also fixedly connected to the outer wall of water pipe 1. The motor 13 drives the turntable 12 to rotate through the transmission gear 14. The rotation of the turntable 12 drives the extension pipe 31 and the replacement ring box 32 to rotate.

[0035] When debris needs to be cleared, cylinder 15 retracts, extension pipe 31 is inserted into the recessed groove 11, and replacement ring box 32 replaces the original position of extension pipe 31, connecting water pipe 1 and water pipe 2. During this process, no water will leak out; after cylinder 15 has finished retracting, the debris originally piled up in water pipe 2 is removed by the water flow ( Figure 2 The water (in the direction of the middle arrow K, which indicates the direction of water flow) is impacted into the receiving cavity 321.

[0036] Meanwhile, in order to allow substances that can pass through the filter screen 33 but are buried in debris to flow with the water through the filter screen 33, the motor 13 is started, and the replacement ring box 32 rotates, thereby disturbing the water flow and turning up the substances buried in the debris, so that they can pass through the filter screen 33 smoothly. This rotation can also prevent the debris from piling up in the receiving cavity 321, and at the same time, it can also make the debris stuck on the filter screen 33 be thrown into the receiving cavity 321 under the action of centrifugal force. After a period of time, the cylinder 15 is extended to make the replacement ring box 32 take the debris out of the water.

[0037] To enhance the effect of disturbing the water flow, a baffle plate 331 is also provided on the filter screen 33.

[0038] To facilitate cleaning of the receiving cavity 321, the replacement ring box 32 is divided into a sealing plate 322 and a curved plate 323. The cylinder 15 is installed on the curved plate 323. The curved plate 323 is fixedly connected to the extension tube 31. The sealing plate 322 is connected to the curved plate 323 by bolts. The debris in the receiving cavity can be cleaned by removing the bolts on the sealing plate 322.

[0039] To further utilize the volume of the receiving cavity 321 and allow more debris to be accommodated, the telescopic end of the cylinder 15 is inserted into the receiving cavity 321 and connected to a compression ring plate 41. When the cylinder 15 extends or retracts, the compression ring plate 41 abuts against the inner wall of the receiving cavity 321, causing the replacement ring box 32 and the extension tube 31 to slide. After the debris enters the receiving cavity 321, the compression ring plate 41, under the action of the cylinder 15, will first compress the debris and then push the replacement ring box 32 to slide. At this time, the debris is squeezed to one side of the receiving cavity 321, so that the receiving cavity 321 can accommodate more debris in the next cleaning.

[0040] To prevent debris in the receiving cavity 321 from re-entering the water due to excessive contraction of the cylinder 15, a displacement sensor 42 is provided on the cylinder 15. The displacement sensor 42 records the extension and retraction distance each time, thereby determining the position of the debris in the receiving cavity 321 after compression. At this time, when the cylinder 15 contracts, it will not cause the debris to detach from the side wall of the water pipe 2, thus preventing it from returning to the water.

[0041] Reference Figure 2 and Figure 3To more effectively prevent debris from re-entering the water, an isolation plate 43 is connected to the end of the squeezing ring plate 41 away from the cylinder 15 via a connecting assembly. The connecting assembly includes a mounting rod 51 and a limiting rod 52. A sliding groove 411 is formed along the length of the water pipe 1 on the side wall of the squeezing ring plate that cannot be far from the cylinder 15. The mounting rod 51 is slidably connected in the sliding groove 411, and a spring is also provided in the sliding groove 411 to drive the mounting rod 51 to slide and disengage from the sliding groove 411. The mounting rod 51 extends out of the sliding groove 411. One end of the rod 1 is fixedly connected to the isolation plate 43; the mounting rod 51 has a release groove 511 along its own direction, the limiting rod 52 is slidably connected in the release groove 511, the release groove 511 has a spring 512, one end of the spring 512 is fixedly connected to the side wall of the release groove 511, and the other end of the spring 512 is fixedly connected to the limiting rod 52; the sliding groove 411 has a limiting groove 412 for the insertion of the limiting rod, and a release groove 413 for the limiting rod 52 to be submerged.

[0042] When the debris is collected and cylinder 15 extends, the isolation plate 43 pushes the debris towards one end of the receiving cavity 321. After the debris reaches the bottom, the replacement ring box 32 is activated, thereby resetting the extension plate. When the replacement ring box 32 can no longer move, the debris is compressed. When the debris can no longer be compressed, spring 414 contracts, and the limiting rod 52 gradually moves from the limiting groove 412 to the disengagement groove 413 until it aligns with the disengagement groove 413. After the limiting rod 52 aligns with the disengagement groove 413... Under the action of spring 512, the limiting rod 52 is inserted into the release groove 413. At this time, the mounting rod 51 and the isolation plate 43 are pushed out by spring 414. The isolation plate 43 is left in a fixed position in the receiving cavity 321 by friction with the inner wall of the receiving cavity 321. The isolation plate 43 also divides the receiving cavity 321 into a compartment. When the cylinder 15 is retracted again, as long as the isolation plate 43 does not slide excessively and detach from the outer wall of the water pipe 2, the debris will not leave the compartment and return to the water.

[0043] Considering that even if there are no impurities in the receiving cavity 321, the isolation plate 43 will abut against the side wall of the receiving cavity 321 and push the replacement ring box 32 to slide. After the replacement ring box 32 slides to the end, the isolation plate 43 will be squeezed and will detach from the squeezing ring plate 41, which would result in the waste of the isolation plate 43; therefore, a spring 3111 is provided in the embedding groove 11 to drive the extension tube 31 to extend out of the embedding groove 11. With this spring 3111, the extension tube 31 can drive the replacement ring box 32 to complete the reset, so that it does not need to rely on the cylinder 15; so that the isolation plate 43 will only detach when there are impurities in the receiving cavity 321.

[0044] In order to divide the receiving cavity 321 into more compartments, multiple partition plates 43 are provided, which are arranged along the length of the water pipe. Each partition plate 43 is also provided with a sliding groove 411, a limiting groove 412, and a release groove 413. Adjacent partition plates 43 are connected by a connecting component. However, if the rightmost partition plate 43 is squeezed, the springs 414 in the other partition plates 43 will also be squeezed, causing multiple partition plates 43 to detach together. Therefore, a limiting rod 64 and an abutment rod 62 are also provided in the partition plate 43 to prevent this phenomenon from occurring.

[0045] A release groove 61 is provided on the isolation plate 43 along the length of the water pipe 1, and the abutment rod 62 is slidably connected in the release groove 61. A limit groove 63 is provided in the isolation plate 43, which connects the release groove 61 and the sliding groove 411. A limit rod 64 is slidably connected in the limit groove 63. When the mounting rod 51 is located in the sliding groove 411, one end of the limit rod 64 abuts against the mounting rod 51, and the other end of the limit rod 64 abuts against the abutment rod 62, thereby preventing the abutment rod 62 from sinking into the release groove 61. The end of the abutment rod 62 extending out of the release groove 61 abuts against the lower... On a partition plate 43, the springs 414 in adjacent partition plates 43 are compressed in a linked manner, thereby preventing multiple partition plates 43 from detaching at the same time; a guide surface 65 is provided at one end of the limiting rod 64 near the abutting rod 62; when a force along the extension direction of the cylinder 15 acts on the guide surface 65, the limiting rod 64 will have a tendency to be submerged in the side wall of the release groove 61. After the limiting rod 64 is submerged in the side wall of the release groove 61, the abutting rod 62 can be submerged in the release groove, thereby allowing the partition plates 43 to detach one by one, thereby dividing the receiving cavity 321 into more compartments.

[0046] The implementation principle of a municipal engineering water supply and drainage system according to an embodiment of this application is as follows: When the water flows normally, the extension pipe 31 connects water pipe 1 and water pipe 2, and debris is gradually accumulated in front of the filter screen 33; when cleaning is required, the drive cylinder 15 contracts, squeezing the ring plate 41 against the inner wall of the receiving cavity 321 and driving the replacement ring box 32 to slide until the replacement ring box 32 replaces the extension pipe 31 to connect water pipe 1 and water pipe 2; the accumulated debris hits the filter screen 33 under the impact of the water flow and falls into the receiving cavity 321; at this time, the motor 13 can be started to make the replacement ring box 32 and the filter screen 33 rotate, and the baffle plate 331 disturbs the water flow, thereby turning out the material buried in the debris but that can pass through the filter screen 33 and allowing it to pass through the filter screen 33; after a certain period of time, the start cylinder 15 extends, and the extension pipe 31 is under the action of the spring 3111. The debris extends together, and the motor 13 remains on during this process, allowing the debris to be thrown into the receiving cavity 321 under the action of centrifugal force. After the replacement ring plate reaches its limit position, the isolation plate 43 begins to squeeze and compress the debris under the action of the cylinder 15. After the debris can no longer be squeezed and compressed, the spring 414 contracts, and the limit rod 52 aligns with the release groove 413. The limit rod 52 then leaves the release groove 511. At this time, the spring 414 of the adjacent, inner isolation plate 43 will not be compressed under the action of the abutment rod 62. This allows the mounting rod 51 of the outermost isolation plate 43 to leave the sliding groove 411 independently, thereby detaching the isolation plate 43 and leaving it in a fixed position in the receiving cavity 321. This divides the receiving cavity 321 into a space filled with debris, preventing the debris from re-entering the water.

[0047] When cylinder 15 retracts for the next time, it retracts according to the data of displacement sensor 42. After the retraction is completed, the isolation plate 43 is still against the outer wall of water pipe 2. The compartment where the debris is located is connected to the water body, so it cannot enter the water body.

[0048] When cylinder 15 extends again, the outermost isolation plate 43 is compressed, and the abutment rod 62 abuts against the adjacent isolation plate 43 and receives the compressive force, thereby driving the limit rod 64 to enter the side wall of the release groove 61. Then the abutment rod 62 enters the release groove 61, thereby allowing the spring 414 to be compressed, thus completing the release of the outermost isolation plate 43.

[0049] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A municipal engineering water supply and drainage system, comprising a first water pipe (1) and a second water pipe (2), characterized in that: The water pipe (1) has a groove (11) along its length, and an extension pipe (31) is embedded in the groove (11). The water pipe (1) is equipped with a cylinder (15) for driving the extension pipe (31) to extend or retract into the groove (11). The extension pipe (31) is equipped with a filter screen (33). The extension pipe (31) is equipped with a replacement ring box (32), and the replacement ring box (32) has a cavity (321) for storing miscellaneous items. The replacement ring box (32) includes a sealing plate (322) and a bending plate (323). The telescopic end of the cylinder (15) passes through the groove. On the bending plate (323), the bending plate (323) is fixedly connected to the extension pipe (31), and the sealing plate (322) is detachably connected to the end of the bending plate (323) away from the cylinder (15); when the extension pipe (31) is inserted into the second water pipe (2), the second water pipe (2), the extension pipe (31) and the first water pipe (1) are connected in sequence, and the substitute ring box (32) is sleeved on the outer wall of the second water pipe (2); when the extension pipe (31) is retracted into the embedded groove (11), the second water pipe (2), the substitute ring box (32) and the first water pipe (1) are connected in sequence.

2. A municipal engineering water supply and drainage system according to claim 1, characterized in that: The water pipe (1) is equipped with a power assembly for driving the extension pipe (31) to rotate. The power assembly includes a turntable (12) and a motor (13). The turntable (12) is concentrically connected to the water pipe (1). The fixed end of the cylinder (15) is fixedly connected to the turntable (12). The telescopic end of the cylinder (15) is connected to the replacement ring box (32). The motor (13) is used to drive the turntable (12) to rotate.

3. A municipal engineering water supply and drainage system according to claim 1, characterized in that: A compression ring plate (41) is slidably connected in the receiving cavity (321) along the length direction of the water pipe (1). The telescopic end of the cylinder (15) passes through the receiving cavity (321) and is fixedly connected to the compression ring plate (41). A displacement sensor (42) for detecting the moving distance of the telescopic end of the cylinder (15) is provided on the fixed end of the cylinder (15).

4. A municipal engineering water supply and drainage system according to claim 3, characterized in that: An isolation plate (43) is connected to the extrusion ring plate (41) via a connecting assembly. The connecting assembly includes an installation rod (51) and a limiting rod (52). A sliding groove (411) is provided on the side wall of the extrusion ring plate (41) away from the cylinder (15) along the length of the water pipe (1). The installation rod (51) is slidably connected in the sliding groove (411). A spring (414) is also provided in the sliding groove (411) to drive the installation rod (51) to slide away from the sliding groove (411). One end of the installation rod (51) extending out of the sliding groove (411) is fixedly connected to the isolation plate (43). The installation rod (51) extends along its own radial direction. A release groove (511) is provided, and a limiting rod (52) is slidably connected in the release groove (511). A spring (512) is provided in the release groove (511) to drive the limiting rod (52) out of the release groove (511). The inner wall of the sliding groove (411) is provided with a limiting groove (412) for the insertion of the limiting rod (52) and a release groove (413) for the insertion of the limiting rod (52). The limiting groove (412) and the release groove (413) are connected. During the process of the mounting rod (51) pressing the spring, the limiting rod (52) slides along the limiting groove and is inserted into the release groove (413).

5. A municipal engineering water supply and drainage system according to claim 4, characterized in that: There are multiple isolation plates (43), which are arranged along the length of the first water pipe (1). Adjacent isolation plates (43) are connected by a connecting component. Each isolation plate has a sliding groove (411), a limiting groove (412), and a release groove (413). A release groove (61) is provided on the isolation plate (43) along the length of the first water pipe (1), and an abutment rod (62) is slidably connected in the release groove (61). A limiting groove (63) is provided in the isolation plate (43), and the limiting groove (63) communicates with the release groove (61). A limiting rod two (64) is slidably connected in the sliding groove (411) and the limiting groove two (63); when the mounting rod (51) is located in the sliding groove (411), one end of the limiting rod two (64) abuts against the mounting rod (51), and the other end of the limiting rod two (64) abuts against the abutting rod (62); the limiting rod two (64) has a guide surface (65) at one end near the abutting rod (62), and the guide surface (65) allows the limiting rod two (64) to be pushed into the inner wall of the release groove three (61) when the abutting rod (62) slides into the release groove three (61).

6. A municipal engineering water supply and drainage system according to claim 1, characterized in that: The recessed groove (11) is provided with a spring three (111) for driving the extension tube (31) to extend out of the recessed groove (11).

7. A municipal engineering water supply and drainage system according to claim 1, characterized in that: The filter screen (33) is provided with baffles (331).

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