Municipal pipe network water supply device

By designing the cleaning barrel and the elastic ring in the water supply device, the cleaning barrel is driven to move up and down in the water supply tank, the problem of difficulty in cleaning scale at high places is solved, and efficient scale cleaning and water quality protection is achieved.

CN120291591APending Publication Date: 2025-07-11青海省工达建筑工程总承包有限公司
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Patent Information

Application Number
CN202510726738.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-06-03
Publication Date
2025-07-11

AI Technical Summary

Technical Problem

In existing water supply devices, scale on the high inner wall is difficult to clean, and manual cleaning has risks and may lead to problems such as degradation of water quality.

Method used

A municipal pipeline water supply device is designed, using a cleaning cylinder, an elastic ring and a diversion pipe to cooperate, and the cleaning cylinder is driven to move up and down in the water supply tank by using the water flow, scraping scale through the elastic ring, and cleaning it in a closed environment to prevent scale from entering the water source.

Benefits of technology

It realizes efficient cleaning of scale on the inner wall of the water supply tank, ensures the normal operation of the water supply function, and avoids water quality pollution.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention belongs to the technical field of water supply devices, and discloses a municipal pipe network water supply device which comprises a water supply tank, a cleaning cylinder is movably arranged in the water supply tank, the upper end and the lower end of the cleaning cylinder form ring body parts, a deformation part is formed in the middle of the cleaning cylinder, and the two ring body parts and the deformation part define a cleaning chamber; the structures on the two ring body parts are the same; two annular grooves are formed in the outer side of the ring body part, elastic rings are fixed in the annular grooves, a flow dividing pipe is fixedly communicated between the two elastic rings in the ring body part in a penetrating mode, an inner electromagnetic valve is fixed to the part, located in the cleaning chamber, of the flow dividing pipe, and a middle electromagnetic valve is fixed to the part, located between the two elastic rings, of the flow dividing pipe; outer electromagnetic valves are fixed to the portions, located in the ring body parts, of the flow dividing pipes, and one ends of the flow dividing pipes on the two ring body parts communicate with the head pipe body; according to the water supply tank, scale on the inner side wall of the water supply tank can be cleaned through up-down movement of the cleaning cylinder in the water supply tank.
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Description

Technical Field

[0001] The invention belongs to the technical field of water supply devices, and specifically relates to a water supply device for municipal pipe networks. Background Art

[0002] During the process of supplying water to the municipal pipe network through a water supply device, since a large amount of water is stored in the water supply device for a long time, scale will be generated on the inner wall of the water supply device during the storage process, and it needs to be cleaned regularly. For the scale on the inner wall part at the bottom of the water supply device, due to its limited height, it can be cleaned manually or by other means. However, for the scale on the inner wall at a higher position, due to its high height, cleaning it manually or by other means not only poses risks, but also may cause the scale to spread into the water source after cleaning, reducing the quality of the water. Summary of the Invention

[0003] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a water supply device for municipal pipe networks, effectively solving the problem that it is not convenient to clean the scale on the inner side wall of the water supply device.

[0004] To achieve the above object, the present invention provides the following technical solution: A water supply device for municipal pipe networks, including a water supply tank, a cleaning cylinder is movably arranged in the water supply tank. Both the upper and lower ends of the cleaning cylinder form annular parts, and the middle part of the cleaning cylinder forms a deformation part. The two annular parts and the deformation part enclose to form a cleaning chamber, and a telescopic member is fixed in the cleaning chamber; the structures on the two annular parts are the same;

[0005] Two annular grooves are opened on the outer side of the annular part, an elastic ring is fixed in the annular groove, a shunt pipe is fixedly connected through between the two elastic rings in the annular part, an inner solenoid valve is fixed on the part of the shunt pipe located in the cleaning chamber, a middle solenoid valve is fixed on the part of the shunt pipe located between the two elastic rings, an outer solenoid valve is fixed on the part of the shunt pipe located in the annular part. One end of the shunt pipe on each of the two annular parts is communicated with the first pipe body, the other ends of the shunt pipes on the two annular parts are respectively communicated with the two ends of the telescopic member, and a tail pipe body with a tail solenoid valve is also communicated at the connection between the shunt pipe located below and the telescopic member. An inlet pipe and an outlet pipe are respectively fixedly connected to the cleaning chamber.

[0006] Preferably, the longitudinal dimension of the cross-section of the annular part is greater than the transverse dimension of the cross-section of the deformation part, the annular part is made of a hard material, and the deformation part is made of a flexible material.

[0007] Preferably, one end of the elastic ring close to the axis direction of the cleaning cylinder is fixed to the annular groove, an inner cavity is formed in the elastic ring, an upper connection hole and a lower connection hole are opened on the shunt pipe, the inner cavity of one elastic ring in the annular part is communicated with the shunt pipe through the upper connection hole, and the inner cavity of the other elastic ring in the annular part is communicated with the shunt pipe through the lower connection hole.

[0008] Preferably, one end of the elastic ring away from the cleaning cylinder forms a solid part, and the longitudinal section of the solid part is strip-shaped.

[0009] Preferably, a plurality of telescopic members are provided, and the plurality of telescopic members are uniformly arranged along the circumferential direction of the cleaning cylinder. The bottoms of the plurality of telescopic members are all communicated with the shunt pipe located below, and the tops of the plurality of telescopic members are all communicated with the shunt pipe located above.

[0010] Preferably, the telescopic member includes a lower pipe body, an upper pipe body and a pressure valve. The lower pipe body is communicated with the shunt pipe located below. The shape of the upper pipe body is an inverted T shape, and the upper pipe body is slidably and sealingly arranged in the lower pipe body. The upper pipe body is communicated with the shunt pipe located above, and the pressure valve is fixed in the upper pipe body.

[0011] Preferably, the pressure valve includes an elastic column, the elastic column is fixed in the upper pipe body, and a cross-shaped tear opening is formed at the center of the elastic column.

[0012] Preferably, a water inlet pipe and a water outlet pipe are respectively fixed on both sides of the water supply tank, and the water outlet pipe is communicated with the municipal pipe network.

[0013] Preferably, a sewage discharge pipe is fixed on the water supply tank. A partition is provided inside the water supply tank. The top of the partition is conical, and the bottom of the partition is cylindrical. The bottom of the partition is fixed to the water supply tank through a plurality of connecting frames; and the outer diameter of the cylindrical part at the bottom of the partition is equal to the inner diameter of the cleaning cylinder.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0015] 1. During operation, through the cooperation of the cleaning cylinder, the elastic ring and the shunt pipe provided, the up and down movement of the cleaning cylinder in the water supply tank can be realized by means of water flow driving, and the scale on the inner side wall of the water supply tank can be cleaned by the elastic ring during the movement.

[0016] 2. During operation, through the cooperation of the ring part and the deformation part provided, the cleaning of the scale on the inner side wall of the water supply tank can be carried out in a closed environment, so as not to affect the normal water supply function in the water supply tank.

[0017] 3. During operation, through the cooperation of the elastic ring and the annular groove provided, when the elastic ring is received into the inside of the annular groove, the scale accumulated on the elastic ring can be removed, so as to ensure the scraping effect of the elastic ring on the scale and avoid the accumulation of scale.

[0018] 4. During work, through the cooperation of the cleaning cylinder and the partition plate, impurities and scale in the water supply tank can accumulate at the bottom of the water supply tank. When it is necessary to clean the accumulated scale and impurities at the bottom of the water supply tank, the cleaning cylinder can keep the space at the bottom of the water supply tank closed, so as not to affect the water supply function of the water supply tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention.

[0020] In the drawings:

[0021] Figure 1 is a schematic structural diagram of a municipal pipe network water supply device of the present invention;

[0022] Figure 2 is a schematic internal structure diagram of the blowing water tank of the present invention;

[0023] Figure 3 is a schematic sectional structure diagram of the water supply tank of the present invention;

[0024] Figure 4 is a schematic structure diagram of the cleaning cylinder of the present invention;

[0025] Figure 5 is a schematic sectional structure diagram of the cleaning cylinder of the present invention;

[0026] Figure 6 is of the present invention Figure 3 magnified schematic structure diagram at A;

[0027] Figure 7 is of the present invention Figure 6 magnified schematic structure diagram at B;

[0028] Figure 8 is a schematic structure diagram of the telescopic member of the present invention.

[0029] In the figure: 1. Water supply tank; 2. Cleaning cylinder; 3. Ring body part; 4. Deformation part; 5. Cleaning chamber; 6. Annular groove; 7. Elastic ring; 8. Shunt pipe; 9. Inner solenoid valve; 10. First pipe body; 11. Tail pipe body; 12. Inlet pipe; 13. Outlet pipe; 14. Inner cavity body; 15. Upper connection hole; 16. Lower connection hole; 17. Solid part; 18. Lower pipe body; 19. Upper pipe body; 20. Pressure valve; 21. Elastic column; 22. Tear opening; 23. Water inlet pipe; 24. Water outlet pipe; 25. Sewage pipe; 26. Partition plate; 27. Connecting frame; 28. Middle solenoid valve; 29. Outer solenoid valve; 30. Tail solenoid valve. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0031] During the process of supplying water to the municipal pipe network through the water supply device, since a large amount of water is stored in the water supply device for a long time, the inner wall of the water supply device will produce scale during the storage process, and it needs to be cleaned regularly. For the scale on the inner wall part at the bottom of the water supply device, due to its limited height, it can be cleaned by manual means or the like. However, for the scale on the inner wall at a higher position, due to its high height, cleaning it by manual means or the like not only poses risks, but also if a cleaning device is directly installed at a higher position, the scale may spread into the water source after cleaning, reducing the quality of the water. Therefore, this technical problem needs to be solved.

[0032] As Figures 1 - 8 given, the present invention relates to a water supply device for a municipal pipe network, including a water supply tank 1. A cleaning cylinder 2 is movably arranged in the water supply tank 1. Ring parts 3 are formed at both the upper and lower ends of the cleaning cylinder 2, and a deformation part 4 is formed in the middle of the cleaning cylinder 2. The two ring parts 3 and the deformation part 4 enclose to form a cleaning chamber 5. A telescopic member is fixed in the cleaning chamber 5, and the structures on the two ring parts 3 are the same;

[0033] Two annular grooves 6 are opened on the outer side of the ring part 3. Elastic rings 7 are fixed in the annular grooves 6. A shunt pipe 8 is fixedly connected through between the two elastic rings 7 in the ring part 3. An inner electromagnetic valve 9 is fixed on the part of the shunt pipe 8 located in the cleaning chamber 5. A middle electromagnetic valve 28 is fixed on the part of the shunt pipe 8 located between the two elastic rings 7. An outer electromagnetic valve 29 is fixed on the part of the shunt pipe 8 located in the ring part 3. One ends of the shunt pipes 8 on the two ring parts 3 are both connected to a first pipe body 10, and the other ends of the shunt pipes 8 on the two ring parts 3 are respectively connected to both ends of the telescopic member. And a tail pipe body 11 with a tail electromagnetic valve 30 is also connected to the connection part of the shunt pipe 8 located below and the telescopic member. An inlet pipe 12 and an outlet pipe 13 are respectively fixedly connected to the cleaning chamber 5.

[0034] With such a design, when in use and when it is necessary to clean the scale on the inner wall at a relatively high position of the water supply tank 1, only the inner solenoid valve 9 on the upper shunt pipe 8 and the outer solenoid valve 30 on the lower tail pipe body 11 need to be closed, and the rest of the solenoid valves are opened. Water flow is delivered to the head pipe body 10 through an external two-way pump. The water flow enters the interiors of the two elastic rings 7 within the lower annular portion 3 through the lower shunt pipe 8. Under the pressure of the water flow, the volumes of the two elastic rings 7 within the lower annular portion 3 become larger and tightly fit against the inner wall of the water supply tank 1, thereby fixing the position of the lower annular portion 3.

[0035] Then the water flow enters the interior of the telescopic member, causing the telescopic member to extend and become longer. The telescopic member drives the upper annular portion 3 to move upward. Then the water flow is delivered from the interior of the telescopic member through the upper shunt pipe 8 to the interiors of the two elastic rings 7 within the upper annular portion 3. Under the action of the water pressure, the volumes of the two elastic rings 7 within the upper annular portion 3 become larger and tightly fit against the inner wall of the water supply tank 1, thereby fixing the position of the upper annular portion 3 to facilitate fixing the cleaning cylinder 2 inside the water supply tank 1.

[0036] Next, first close all the solenoid valves, then open the outer solenoid valve 29 on the lower shunt pipe 8 and the tail solenoid valve 30 on the tail pipe body 11. Then the external two-way pump extracts through the tail pipe body 11. Under the action of negative pressure, the lower elastic ring 7 within the lower annular portion 3 contracts into the corresponding annular groove 6, and at the same time, the telescopic member contracts due to the negative pressure. At this time, since only one elastic ring 7 within the lower annular portion 3 contacts the inner wall of the water supply tank 1, while the two elastic rings 7 within the upper annular portion 3 both contact the inner wall of the water supply tank 1, when the telescopic member contracts, it will cause the lower annular portion 3 to move upward. At the same time, the elastic ring 7 within the lower annular portion 3 that abuts against the water supply tank 1 scrapes the scale on the inner side wall of the water supply tank 1.

[0037] After the movement is completed, water flow is delivered into the interior of the cleaning chamber 5 through the inlet pipe 12. The scale within the cleaning chamber 5 is flushed by the water flow and then discharged through the discharge pipe 13 to complete one cleaning process.

[0038] Then open the middle solenoid valve 28 and the outer solenoid valve 29 on the upper shunt pipe 8, while the inner solenoid valve 9 on the upper shunt pipe 8 is in the closed state. At this time, the inner solenoid valve 9 and the middle solenoid valve 28 on the lower shunt pipe 8 are in the closed state, the outer solenoid valve 29 on the lower shunt pipe 8 is in the open state, and the tail solenoid valve 30 on the tail pipe body 11 is in the open state.

[0039] Next, a tail pipe body 11 is extracted by an externally connected two-way pump, so that the two elastic rings 7 in the upper annular part 3 contract and respectively enter into the corresponding two annular grooves 6. Then, water flow is conveyed through the tail pipe body 11 by the externally connected two-way pump. Under the action of the water flow, the contracted elastic rings 7 on the lower annular part 3 increase in volume and then contact the inner wall of the water supply tank 1 again for position fixation. And the contraction member is elongated again by the water pressure, and the upper annular part 3 located above is driven to move upward by the contraction member. At the same time, the two contracted elastic rings 7 in the upper annular part 3 increase in volume again and contact the inner wall of the water supply tank 1 for position fixation, so as to facilitate the cyclic displacement process and realize the comprehensive cleaning of the water scale on the inner side wall of the water supply tank 1.

[0040] It should be noted that the cleaning cylinder 2 can not only move upward inside the water supply tank 1, but also move downward inside the water supply tank 1, so that the cleaning is more comprehensive. Its working principle is similar to the above content, so it will not be elaborated too much here; the externally connected two-way pump can not only convey water flow, but also extract water flow.

[0041] Specifically, the longitudinal dimension of the cross section of the annular part 3 is larger than the transverse dimension of the cross section of the deformation part 4. The annular part 3 is made of a hard material, such as plastic, resin, etc.; the deformation part 4 is made of a flexible material, such as silica gel, rubber, etc. With such a design, when relative movement occurs between the two annular parts 3 on the cleaning cylinder 2, the deformation part 4 can ensure the movement while keeping the cleaning chamber 5 in a sealed environment, avoiding the water scale generated by cleaning from entering the inside of the water supply tank 1.

[0042] Specifically, one end of the elastic ring 7 close to the axis direction of the cleaning cylinder 2 is fixed to the annular groove 6. An inner cavity 14 is formed inside the elastic ring 7. An upper connection hole 15 and a lower connection hole 16 are opened on the shunt pipe 8. The inner cavity 14 of one elastic ring 7 in the annular part 3 is communicated with the shunt pipe 8 through the upper connection hole 15, and the inner cavity 14 of the other elastic ring 7 in the annular part 3 is communicated with the shunt pipe 8 through the lower connection hole 16.

[0043] With such a design, the outer edge of the elastic ring 7 can extend out of the annular groove 6 after its volume increases, and the outer edge contracts into the annular groove 6 after its volume decreases; the upper connection hole 15 and the lower connection hole 16 facilitate injecting or extracting liquid into the corresponding elastic ring 7.

[0044] Specifically, one end of the elastic ring 7 far from the cleaning cylinder 2 forms a solid part 17, and the longitudinal section of the solid part 17 is strip-shaped. With such a design, the strength of the elastic ring 7 can be ensured through the solid part 17, so as to facilitate scraping the water scale. At the same time, when the elastic ring 7 contracts into the inside of the corresponding annular groove 6, the water scale remaining after scraping on the solid part 17 can be cleaned by the edge of the annular groove 6, avoiding the accumulation of water scale on the solid part 17.

[0045] In order to further improve the relative motion stability between the two ring bodies 3, multiple telescopic members are provided, and the multiple telescopic members are evenly arranged along the circumference of the cleaning tube 2. The bottoms of the multiple telescopic members are all connected to the shunt pipe 8 located below, and the tops of the multiple telescopic members are all connected to the shunt pipe 8 located above. In this design, the relative motion stability between the two ring bodies 3 can be improved by multiple telescopic members.

[0046] Specifically, the telescopic member includes a lower tube body 18, an upper tube body 19 and a pressure valve 20. The lower tube body 18 is connected to the shunt pipe 8 located below. The upper tube body 19 is in the shape of an inverted T. The upper tube body 19 is slidingly sealed in the lower tube body 18. The upper tube body 19 is connected to the shunt pipe 8 located above, and the pressure valve 20 is fixed in the upper tube body 19.

[0047] With this design, when water flows into the lower tube body 18, the water flows firstly push the upper tube body 19 to move to the maximum range of motion, and then, as the water pressure of the water flows increases, it eventually breaks through the obstruction of the pressure valve 20 and enters the upper tube body 19; and when the water flows are extracted, the water flows in the lower tube body 18 are extracted first, and then the extracted pressure increases continuously, and eventually breaks through the obstruction of the pressure valve 20 to extract the water flows in the upper tube body 19.

[0048] Specifically, the pressure valve 20 includes an elastic column 21, which is fixed in the upper tube 19, and a cross-shaped tear 22 is formed at the center of the elastic column 21. In this design, under normal conditions, the tear 22 is in a closed state, and only when the pressure reaches a certain value can the tear 22 be broken through.

[0049] Specifically, an inlet pipe 23 and an outlet pipe 24 are fixed on both sides of the water supply box 1, and the outlet pipe 24 is connected to the municipal pipe network. This design facilitates the water supply box 1 to be transported through the inlet pipe 23 and the municipal pipe network to be supplied with water through the outlet pipe 24.

[0050] Furthermore, in order to prevent the deposited scale from moving upward, a sewage pipe 25 is fixed on the water supply tank 1, and a partition 26 is provided inside the water supply tank 1. The top of the partition 26 is conical, and the bottom of the partition 26 is cylindrical. The bottom of the partition 26 is fixed to the water supply tank 1 by a plurality of connecting frames 27; and the outer diameter of the bottom column of the partition 26 is equal to the inner diameter of the cleaning cylinder 2.

[0051] With such a design, under normal conditions, the cleaning cylinder 2 does not close the gap between the partition 26 and the water supply tank 1, and the scale and impurities in the water supply tank 1 enter the interior of the water supply tank 1 below the partition 26 through the gap between the partition 26 and the water supply tank 1 under the guidance of the tapered part of the partition 26, thereby collecting the scale and impurities; and when there are many impurities and cleaning is required, the gap between the partition 26 and the water supply tank 1 is closed by the cleaning cylinder 2, so that the internal space of the water supply tank 1 below the partition 26 is in a closed state, and the drain pipe 25 can be opened to discharge the scale and impurities, and at the same time, the scale on the inner wall of the tapered part of the water supply tank 1 can also be cleaned by tools without affecting the normal use of the water supply tank 1.

[0052] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0053] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A municipal pipe network water supply device, including a water supply tank (1), in which a cleaning cylinder (2) is movably arranged. Ring-shaped parts (3) are formed at both the upper and lower ends of the cleaning cylinder (2). It is characterized in that, A deformation part (4) is formed in the middle of the cleaning cylinder (2). Two annular body parts (3) and the deformation part (4) enclose to form a cleaning chamber (5). A telescopic member is fixed in the cleaning chamber (5). The structures on the two annular body parts (3) are the same; On the outer side of the annular body part (3), two annular grooves (6) are provided. Elastic rings (7) are fixed in the annular grooves (6). A shunt pipe (8) is fixedly connected through between the two elastic rings (7) in the annular body part (3). An inner solenoid valve (9) is fixed on the part of the shunt pipe (8) located in the cleaning chamber (5). A middle solenoid valve (28) is fixed on the part of the shunt pipe (8) located between the two elastic rings (7). An outer solenoid valve (29) is fixed on the part of the shunt pipe (8) located in the annular body part (3). One ends of the shunt pipes (8) on the two annular body parts (3) are both communicated with the head pipe body (10). The other ends of the shunt pipes (8) on the two annular body parts (3) are respectively communicated with the two ends of the telescopic member. And the connection part of the shunt pipe (8) located below and the telescopic member is also communicated with a tail pipe body (11) having a tail solenoid valve (30). An inlet pipe (12) and an outlet pipe (13) are respectively fixedly connected to the cleaning chamber (5).

2. The water supply device for municipal pipe network according to claim 1, characterized in that, The longitudinal dimension of the cross-section of the annular body part (3) is larger than the transverse dimension of the cross-section of the deformation part (4). The annular body part (3) is made of a hard material, and the deformation part (4) is made of a flexible material.

3. A municipal pipe network water supply device according to claim 1, characterized in that, One end of the elastic ring (7) close to the axis direction of the cleaning cylinder (2) is fixed to the annular groove (6). An inner cavity body (14) is formed in the elastic ring (7). An upper connection hole (15) and a lower connection hole (16) are provided on the shunt pipe (8). The inner cavity body (14) of one elastic ring (7) in the annular body part (3) is communicated with the shunt pipe (8) through the upper connection hole (15). The inner cavity body (14) of the other elastic ring (7) in the annular body part (3) is communicated with the shunt pipe (8) through the lower connection hole (16).

4. A municipal pipe network water supply device according to claim 3, characterized in that, One end of the elastic ring (7) far from the cleaning cylinder (2) forms a solid part (17). The longitudinal section of the solid part (17) is strip-shaped.

5. A municipal pipe network water supply device according to claim 1, characterized in that, A plurality of telescopic members are provided. The plurality of telescopic members are uniformly arranged along the circumferential direction of the cleaning cylinder (2). The bottoms of the plurality of telescopic members are all communicated with the shunt pipe (8) located below, and the tops of the plurality of telescopic members are all communicated with the shunt pipe (8) located above.

6. The municipal pipe network water supply device according to claim 5, characterized in that, The telescopic member includes a lower pipe body (18), an upper pipe body (19) and a pressure valve (20). The lower pipe body (18) is communicated with the shunt pipe (8) located below. The shape of the upper pipe body (19) is an inverted T shape. The upper pipe body (19) is slidably sealed in the lower pipe body (18). The upper pipe body (19) is communicated with the shunt pipe (8) located above. The pressure valve (20) is fixed in the upper pipe body (19).

7. A municipal pipe network water supply device according to claim 6, characterized in that, The pressure valve (20) includes an elastic column (21). The elastic column (21) is fixed in the upper pipe body (19). A cross-shaped tear opening (22) is formed at the center of the elastic column (21).

8. A municipal pipe network water supply device according to claim 1, characterized in that, On both sides of the water supply tank (1), a water inlet pipe (23) and a water outlet pipe (24) are respectively fixed. The water outlet pipe (24) is communicated with the municipal pipe network.

9. The water supply device for municipal pipe network according to claim 1, characterized in that, A sewage discharge pipe (25) is fixed on the water supply tank (1). A partition plate (26) is arranged inside the water supply tank (1). The top of the partition plate (26) is conical, and the bottom of the partition plate (26) is cylindrical. The bottom of the partition plate (26) is fixed to the water supply tank (1) through a plurality of connecting frames (27); and the outer diameter of the bottom cylindrical part of the partition plate (26) is equal to the inner diameter of the cleaning cylinder (2).