Pipe flushing device capable of realizing water pressure balance of flushing pipes with different diameters

Abstract

The utility model provides a kind of pipe flushing device that can realize different pipe diameter flushing pipe water pressure balance, including device main body, water tank, water pump and water distribution valve group, water pump operation can pump from water tank, high-pressure water is delivered to flushing pipe by water distribution valve group to pipe is dredged and is washed.The water distribution valve group includes outlet water tee bend valve and reflux valve, the water inlet end of outlet water tee bend valve is connected with the water outlet end of water pump, two water outlet ends of outlet water tee bend valve are respectively connected with reflux valve and flushing pipe, reflux valve can guide part of water to flow back to water tank, and reflux valve can control the opening and closing of its own passage.When facing small pipe needs to replace thinner flushing pipe, reflux valve can be opened, part of high-pressure water produced when water pump operates is washed to pipe by flushing pipe, another part is delivered to water tank by reflux valve, can prevent water pump pressure, water pump is not easy to damage.

Description

Technical Field

[0001] This utility model belongs to the technical field of pipeline flushing equipment, specifically relating to a pipeline flushing device that can achieve water pressure balance in flushing pipes of different diameters. Background Technology

[0002] A pipe flushing device is a cleaning equipment used to flush sewer pipes. It works by using a high-pressure pump to generate a high-pressure water flow. The pump's outlet connects to a flushing pipe, which delivers the high-pressure water to the pipes that need flushing, thus clearing and cleaning them. Different models of flushing devices have preset water flow rates and pressures, as well as flushing pipe diameters that match these rates and pressures. While the water flow rate and pressure can be adjusted within a certain range, the adjustable range is not very large to ensure effective flushing.

[0003] In practical applications, due to the varying diameters of the pipes to be flushed, situations may arise where the flushing pipe cannot be inserted if the pipe diameter is too small. When faced with this situation, there are two solutions: The first solution is to replace the flushing device with a different specification. This would require users to purchase multiple models of flushing devices, significantly increasing operating costs and making it unlikely to be adopted by users. The second solution is to remove the existing flushing pipe and replace it with a smaller-diameter one. The problem with the second solution is that replacing the flushing pipe with a smaller diameter leads to a decrease in water output. This results in the high-pressure water generated by the high-pressure pump not being discharged in time, potentially causing pressure buildup and damage to the high-pressure pump, thus increasing equipment maintenance costs. Utility Model Content

[0004] This invention provides a pipe flushing device that can achieve water pressure balance in flushing pipes of different diameters, aiming to solve the pressure build-up problem caused by replacing the flushing pipes with smaller ones in existing pipe flushing equipment.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is: to provide a pipe flushing device capable of achieving water pressure balance in flushing pipes of different diameters, comprising:

[0006] Main body of the device;

[0007] A water tank is located in the main body of the device;

[0008] A water pump, located in the main body of the device, wherein the inlet of the water pump is connected to the water tank; and

[0009] The water distribution valve assembly includes an outlet three-way valve and a return valve. The outlet three-way valve has one inlet and two outlets. The inlet of the outlet three-way valve is connected to the outlet of the water pump. One outlet of the outlet three-way valve is connected to a flushing pipe. The other outlet of the outlet three-way valve is connected to the inlet of the return valve. The outlet of the return valve is connected to the water tank. The return valve has an open state and a closed state.

[0010] In one possible implementation, the reflux valve includes:

[0011] A valve body, wherein a flow channel is provided inside the valve body, one end of the flow channel penetrating the valve body to form an inlet, and the other end of the flow channel penetrating the valve body to form an outlet; and

[0012] A valve stem assembly is disposed in the valve body, and one end of the valve stem assembly is slidably disposed in the flow channel. When the return valve is in the closed state, the valve stem assembly can cut off the flow channel. When the return valve is in the open state, there is a water passage gap between the valve stem assembly and the flow channel.

[0013] In one possible implementation, the water distribution valve group further includes an inlet three-way valve, which is located upstream of the outlet three-way valve in the water flow direction. The inlet three-way valve includes one inlet end and two outlet ends. The inlet end of the inlet three-way valve is connected to the outlet end of the water pump, one of the outlet ends of the inlet three-way valve is connected to the inlet end of the outlet three-way valve, and the other outlet end of the inlet three-way valve is connected to the water tank.

[0014] In one possible implementation, a pressure regulating valve is also provided between the outlet end of the inlet three-way valve and the inlet end of the outlet three-way valve.

[0015] In one possible implementation, the inlet three-way valve is used to connect to the outlet three-way valve, and the inlet and outlet ends of the outlet three-way valve are located on the same straight line.

[0016] In one possible implementation, the inlet three-way valve is an electrically controlled three-way valve.

[0017] In one possible implementation, the pipe flushing device capable of balancing water pressure in flushing pipes of different diameters includes two flushing pipes, defined as a first flushing pipe and a second flushing pipe, wherein the first flushing pipe is connected to one outlet end of the outlet three-way valve.

[0018] The water distribution valve assembly also includes a diversion three-way valve, which is located between the outlet three-way valve and the return valve. The diversion three-way valve has one inlet and two outlets. The inlet of the diversion three-way valve is connected to the other outlet of the outlet three-way valve, one outlet of the diversion three-way valve is connected to the inlet of the return valve, and the other outlet of the diversion three-way valve is used to connect to the second flushing pipe.

[0019] In one possible implementation, the pipe flushing device capable of balancing water pressure in flushing pipes of different diameters further includes a fuel engine, the output shaft of which is connected to the water pump.

[0020] In one possible implementation, the main body of the device is provided with a hose reel, and the flushing pipe is wound around the hose reel.

[0021] In one possible implementation, the water tank is equipped with a level gauge.

[0022] Compared with the prior art, the advantages of the pipe flushing device provided by this utility model, which can achieve water pressure balance in flushing pipes of different diameters, are:

[0023] This utility model provides a pipe flushing device capable of balancing water pressure in flushing pipes of different diameters. The device includes a main body, a water tank, a water pump, and a water distribution valve assembly. When the water pump is running, it draws water from the water tank and delivers high-pressure water to the flushing pipes via the water distribution valve assembly to unclog and flush the pipes. The water distribution valve assembly includes an outlet three-way valve and a return valve. The inlet of the outlet three-way valve is connected to the outlet of the water pump, and the two outlets of the outlet three-way valve are respectively connected to the return valve and the flushing pipes. The return valve guides a portion of the water back into the water tank and can control the opening and closing of its own channel. With this configuration, when using the provided conventional flushing pipes for flushing operations, the return valve is closed, and the high-pressure water generated by the water pump is completely delivered to the flushing pipes through the outlet three-way valve. When replacing a narrow flushing pipe with a thinner one, the return valve can be opened. The high-pressure water generated by the pump is partially transported to the pipe for flushing through the flushing pipe, while the other part is transported to the water tank through the return valve. This prevents the pump from becoming pressurized, ensures normal operation of the pump, reduces the risk of damage, and lowers maintenance costs.

[0024] This invention enables the switching of flushing pipes with different diameters and maintains water pressure balance when flushing pipes with different diameters are used to flush the pipeline, thus preventing water pump pressure buildup. Attached Figure Description

[0025] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0026] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0028] Figure 1 A perspective view of a pipe flushing device capable of achieving water pressure balance in flushing pipes of different diameters, provided in Embodiment 1 of this application;

[0029] Figure 2 The three-dimensional water distribution valve assembly in Embodiment 1 of this application Figure 1 ;

[0030] Figure 3 The three-dimensional water distribution valve assembly in Embodiment 1 of this application Figure 2 ;

[0031] Figure 4 This is a perspective view of the water distribution valve assembly in Embodiment 2 of this application;

[0032] Figure 5 This is an internal cross-sectional view of the reflux valve in Embodiment 1 of this application;

[0033] Explanation of reference numerals in the attached figures:

[0034] 10. Main body of the device; 20. Water tank; 30. Fuel engine; 40. Water distribution valve assembly; 41. Outlet three-way valve; 42. Return valve; 421. Valve body; 422. Valve stem assembly; 43. Inlet three-way valve; 44. Pressure regulating valve; 45. Diverting three-way valve; 50. First flushing pipe; 60. Second flushing pipe; 70. Hose reel. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0036] The following disclosure provides numerous different embodiments or examples for implementing various structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0037] For ease of description, spatial relative terms may be used in the text to describe the relative position or movement of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "front," "back," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure undergoes a positional flip, orientation change, or change of motion, these directional indications will change accordingly. For instance, an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.

[0038] Please refer to the following: Figures 1 to 5 The following describes a pipe flushing device that can achieve water pressure balance in flushing pipes of different diameters, provided by an embodiment of this utility model.

[0039] Please see Figure 1 and Figure 2 This utility model provides a pipeline flushing device that can achieve water pressure balance in flushing pipes of different diameters. It can switch between flushing pipes of different diameters and maintain water pressure balance when flushing the pipeline with flushing pipes of different diameters, thus preventing water pump pressure buildup.

[0040] Specifically, the pipe flushing device capable of achieving water pressure balance in flushing pipes of different diameters includes a main body 10, a water tank 20, a water pump, and a water distribution valve group 40. The water tank 20 is located in the main body 10; the water pump is located in the main body 10, and the inlet end of the water pump is connected to the water tank 20; the water distribution valve group 40 includes an outlet three-way valve 41 and a return valve 42. The outlet three-way valve 41 has one inlet end and two outlet ends. The inlet end of the outlet three-way valve 41 is connected to the outlet end of the water pump. One outlet end of the outlet three-way valve 41 is used to connect to the flushing pipe, and the other outlet end of the outlet three-way valve 41 is connected to the inlet end of the return valve 42. The outlet end of the return valve 42 is connected to the water tank 20, and the return valve 42 has an open state and a closed state.

[0041] Compared with the prior art, the beneficial effects of the pipe flushing device provided by this utility model embodiment, which can achieve water pressure balance in flushing pipes of different diameters, are:

[0042] This utility model provides a pipe flushing device capable of balancing water pressure in flushing pipes of different diameters. The device includes a main body 10, a water tank 20, a water pump, and a water distribution valve assembly 40. When the water pump is running, it draws water from the water tank 20 and delivers high-pressure water to the flushing pipes via the water distribution valve assembly 40 to unclog and flush the pipes. The water distribution valve assembly 40 includes an outlet three-way valve 41 and a return valve 42. The inlet of the outlet three-way valve 41 is connected to the outlet of the water pump, and the two outlets of the outlet three-way valve 41 are respectively connected to the return valve 42 and the flushing pipes. The return valve 42 can guide a portion of the water back into the water tank 20, and the return valve 42 can control the opening and closing of its own channel.

[0043] With this setup, when using the provided standard flushing pipe for flushing operations, the return valve 42 is in the closed state, and the high-pressure water generated by the water pump is completely delivered to the flushing pipe through the outlet three-way valve 41. When a smaller flushing pipe needs to be replaced due to narrow pipes, the return valve 42 can be opened. Part of the high-pressure water generated by the water pump during operation is delivered to the pipeline for flushing through the flushing pipe, while the other part is delivered to the water tank 20 through the return valve 42. This prevents the water pump from becoming pressurized, ensures normal operation of the water pump and reduces the risk of damage, thus lowering maintenance costs.

[0044] The main body 10 of the device serves as the main structure for mounting components such as the water tank 20, water pump, and water distribution valve assembly 40. It can be a metal frame, vehicle body, etc., primarily serving a supporting function; its specific shape and structure are not limited. The water tank 20 is mounted on the main body 10 and stores a certain amount of water for pipe flushing. The water tank 20 can be made by welding metal sheets or using a plastic box or other water-storage container. Depending on the needs, the water tank 20 can be equipped with a water inlet, overflow outlet, drain outlet, level gauge, etc.

[0045] The water pump is a high-pressure water pump capable of generating high-pressure water flow. It can be electrically driven (operating simply by connecting a power source) or driven by a fuel engine 30, a hydraulic rotary motor, or other similar drive devices. The output shaft of the fuel engine 30 or the hydraulic rotary motor is connected to the water pump via a transmission connection.

[0046] The water distribution valve assembly 40 includes at least one outlet three-way valve 41 and one return valve 42. The inlet of the outlet three-way valve 41 is connected to the outlet of the water pump, the return valve 42 is connected to one outlet of the outlet three-way valve 41, and the flushing pipe is connected to the other outlet of the outlet three-way valve 41. It should be noted that "connection" in this context can mean direct connection via a connector or threaded interface, or connection via other pipes or valve bodies 421. That is, the outlet of the water pump and the inlet of the outlet three-way valve 41 can be directly connected, or they can be connected via other pipes or valve bodies 421, as long as the high-pressure water generated by the water pump can enter the outlet three-way valve through the inlet. The direction of water flow when the water distribution valve assembly 40 is working is as follows: Figures 2 to 4 As indicated by the middle arrow.

[0047] The water pump, the outlet three-way valve 41, and the return valve 42 can all be existing products on the market, and there are no restrictions on their specific specifications and models.

[0048] Please see Figure 5 In some possible embodiments, the reflux valve 42 includes a valve body 421 and a valve stem assembly 422. The valve body 421 has a flow channel inside, one end of which passes through the valve body 421 to form an inlet, and the other end of which passes through the valve body 421 to form an outlet. The valve stem assembly 422 is disposed on the valve body 421, and one end of the valve stem assembly 422 is slidably disposed in the flow channel. When the reflux valve 42 is in the closed state, the valve stem assembly 422 can cut off the flow channel. When the reflux valve 42 is in the open state, there is a water passage gap between the valve stem assembly 422 and the flow channel.

[0049] In this embodiment, the return valve 42 has an adjustable valve stem assembly 422. As a flow regulating valve, the movable valve stem assembly 422 controls the opening of the internal flow channel of the valve body 421, thereby controlling the return water volume. The valve stem assembly 422 can be a knob type or other common forms. The structure of the return valve 42 is prior art, and users can directly purchase suitable models from the market. Its specific composition and usage will not be described in detail.

[0050] Please see Figures 3 to 4In some possible embodiments, the water distribution valve group 40 also includes an inlet three-way valve 43, which is located upstream of the outlet three-way valve 41 in the water flow direction. The inlet three-way valve 43 includes an inlet end and two outlet ends. The inlet end of the inlet three-way valve 43 is connected to the outlet end of the water pump, one of the outlet ends of the inlet three-way valve 43 is connected to the inlet end of the outlet three-way valve 41, and the other outlet end of the inlet three-way valve 43 is connected to the water tank 20.

[0051] In this embodiment, the inlet three-way valve 43 is located upstream of the outlet three-way valve 41. Water generated by the pump first passes through the inlet three-way valve 43 and then enters the outlet three-way valve 41. The inlet three-way valve 43 has a switchable valve core inside, which can switch the connection path between the inlet end and the two outlet ends by rotating the valve core. Specifically, when the flushing equipment is working, the inlet end of the inlet three-way valve 43 is connected to the outlet end connected to the outlet three-way valve 41, allowing water to flow out smoothly and flush the pipeline. When it is necessary to stop flushing, the valve core of the inlet three-way valve 43 is switched so that the inlet end is connected to the outlet end connected to the water tank 20, allowing the water to flow back into the water tank 20 to reduce waste.

[0052] It is understandable that the inlet three-way valve 43 and the outlet three-way valve 41 can be electric valves or manual valves. They can connect the inlet end to both outlet ends at the same time as needed, or connect the inlet end to one of the outlet ends.

[0053] Please see Figures 3 to 4 In some possible embodiments, a pressure regulating valve 44 is also provided between the outlet end of the inlet three-way valve 43 and the inlet end of the outlet three-way valve 41 to regulate the pressure so that the water pressure sprayed from the flushing pipe remains within a constant range.

[0054] Please see Figures 3 to 4 In some possible embodiments, the inlet three-way valve 43 is used to communicate with the outlet three-way valve 41. The inlet end of the outlet three-way valve 41 and the outlet end of the outlet three-way valve 41 are on the same straight line, with low resistance, which helps the flushing water to flow out smoothly.

[0055] Please see Figure 1In some possible embodiments, a pipe flushing device capable of balancing water pressure in flushing pipes of different diameters includes two flushing pipes, defined as a first flushing pipe 50 and a second flushing pipe 60. The first flushing pipe 50 is connected to one outlet end of an outlet three-way valve 41. The water distribution valve group 40 also includes a diversion three-way valve 45, which is located between the outlet three-way valve 41 and the return valve 42. The diversion three-way valve 45 has one inlet end and two outlet ends. The inlet end of the diversion three-way valve 45 is connected to the other outlet end of the outlet three-way valve 41, one outlet end of the diversion three-way valve 45 is connected to the inlet end of the return valve 42, and the other outlet end of the diversion three-way valve 45 is used to connect to the second flushing pipe 60. This structure is suitable for flushing devices with two flushing pipes. By switching the operating mode of the diversion three-way valve 45, the two flushing pipes can discharge water simultaneously, or the discharge of one flushing pipe can be controlled individually.

[0056] In some possible embodiments, the main body 10 of the device is provided with a hose reel 70, and the rinsing hose is a rubber hose. The rinsing hose is wound around the hose reel 70 for rewinding the rinsing hose when not in use.

[0057] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0058] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0059] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0060] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0061] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0062] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. The illustrative expressions of the above terms in this specification should not be construed as necessarily referring to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0063] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Since these modifications and variations fall within the scope of the claims and their equivalents, this application also intends to include these modifications and variations.

[0064] The above description describes specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A pipe flushing device capable of achieving water pressure balance in flushing pipes of different diameters, characterized in that, include: Main body of the device (10); A water tank (20) is located on the main body (10) of the device. A water pump is located in the main body (10) of the device, and the inlet of the water pump is connected to the water tank (20); and The water distribution valve assembly (40) includes an outlet three-way valve (41) and a return valve (42). The outlet three-way valve (41) has one inlet and two outlets. The inlet of the outlet three-way valve (41) is connected to the outlet of the water pump. One outlet of the outlet three-way valve (41) is connected to the flushing pipe. The other outlet of the outlet three-way valve (41) is connected to the inlet of the return valve (42). The outlet of the return valve (42) is connected to the water tank (20). The return valve (42) has an open state and a closed state.

2. The pipe flushing device according to claim 1, capable of achieving water pressure balance in flushing pipes of different diameters, is characterized in that, The reflux valve (42) includes: A valve body (421) has a flow channel inside, one end of which passes through the valve body (421) to form an inlet, and the other end of which passes through the valve body (421) to form an outlet; and A valve stem assembly (422) is disposed on the valve body (421). One end of the valve stem assembly (422) is slidably disposed in the flow channel. When the return valve (42) is in the closed state, the valve stem assembly (422) can cut off the flow channel. When the return valve (42) is in the open state, there is a water passage gap between the valve stem assembly (422) and the flow channel.

3. A pipe flushing device capable of achieving water pressure balance in flushing pipes of different diameters according to claim 1, characterized in that, The water distribution valve group (40) also includes an inlet three-way valve (43). The inlet three-way valve (43) is located upstream of the outlet three-way valve (41) in the water flow direction. The inlet three-way valve (43) includes one inlet end and two outlet ends. The inlet end of the inlet three-way valve (43) is connected to the outlet end of the water pump. One of the outlet ends of the inlet three-way valve (43) is connected to the inlet end of the outlet three-way valve (41). The other outlet end of the inlet three-way valve (43) is connected to the water tank (20).

4. A pipe flushing device according to claim 3, capable of achieving water pressure balance in flushing pipes of different diameters, characterized in that, A pressure regulating valve (44) is also provided between the outlet end of the inlet three-way valve (43) and the inlet end of the outlet three-way valve (41).

5. A pipe flushing device according to claim 3, capable of achieving water pressure balance in flushing pipes of different diameters, characterized in that, The inlet three-way valve (43) is used to connect with the outlet three-way valve (41). The inlet end of the outlet three-way valve (41) and the outlet end of the outlet three-way valve (41) are located on the same straight line.

6. A pipe flushing device according to claim 3, capable of achieving water pressure balance in flushing pipes of different diameters, characterized in that, The inlet three-way valve (43) is an electrically controlled three-way valve.

7. A pipe flushing device according to claim 1, capable of achieving water pressure balance in flushing pipes of different diameters, characterized in that, The pipeline flushing device capable of achieving water pressure balance in flushing pipes of different diameters includes two flushing pipes, defined as a first flushing pipe (50) and a second flushing pipe (60), wherein the first flushing pipe (50) is connected to one outlet end of the outlet three-way valve (41); The water distribution valve group (40) also includes a diversion three-way valve (45), which is located between the outlet three-way valve (41) and the return valve (42). The diversion three-way valve (45) has one inlet end and two outlet ends. The inlet end of the diversion three-way valve (45) is connected to the other outlet end of the outlet three-way valve (41). One outlet end of the diversion three-way valve (45) is connected to the inlet end of the return valve (42). The other outlet end of the diversion three-way valve (45) is used to connect to the second flushing pipe (60).

8. A pipe flushing device according to claim 1, capable of achieving water pressure balance in flushing pipes of different diameters, characterized in that, The pipeline flushing device capable of achieving water pressure balance in flushing pipes of different diameters also includes a fuel engine (30), the output shaft of which is connected to the water pump.

9. A pipe flushing device according to claim 1, capable of achieving water pressure balance in flushing pipes of different diameters, characterized in that, The device body (10) is provided with a hose reel (70), and the flushing pipe is wound around the hose reel (70).

10. A pipe flushing device according to claim 1, capable of achieving water pressure balance in flushing pipes of different diameters, characterized in that, The water tank (20) is equipped with a level gauge.

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