A washing and sweeping vehicle waterway system, a washing and sweeping vehicle waterway system control method and a washing and sweeping vehicle

Abstract

The application discloses a kind of washing and sweeping car waterway system, washing and sweeping car waterway system control method and washing and sweeping car, it is related to environmental sanitation equipment field.The washing and sweeping car waterway system includes water tank, water pump, spray gun, water valve group, unloading valve, first pipeline, second pipeline and third pipeline, the input end of water pump is in fluid communication with water tank, the output end of water pump is connected with spray gun by first pipeline, and is connected with water valve group by second pipeline, water valve group has at least one first valve connected with continuous water pipeline;Unloading valve is arranged on first pipeline, one end of third pipeline is connected with first pipeline, and the connection position is between unloading valve and spray gun, the other end of third pipeline is connected with second pipeline, and second valve is arranged on third pipeline.The washing and sweeping car waterway system provided by the application can effectively reduce pressure loss and energy consumption, and improve system stability.

Description

Technical Field

[0001] This invention relates to the field of sanitation equipment, and more specifically, to a water system for a sweeper truck, a control method for the water system for a sweeper truck, and a sweeper truck. Background Technology

[0002] The high-pressure water system of a sweeper truck typically has an unloading valve connected in series between the water pump and the water distribution valve assembly. The high-pressure water output from the water pump flows into the unloading valve through port P, flows out through port A to the water distribution valve assembly, and then connects back to the water tank through port T. The water distribution valve assembly controls multiple water-using devices, including spray guns, through multiple output water valves, enabling selective water supply to different water-using devices.

[0003] The unloading valve has both overflow and unloading functions. When the system pressure is too high, the overflow protection is activated. When the water distribution valve group is switched to spray gun operation and the spray gun is closed, the unloading is triggered, and the high-pressure water is automatically bypassed back to the water tank to unload. When the spray gun is opened, the unloading stops, so that the high-pressure water flows from the unloading valve into the spray gun and is sprayed.

[0004] In this type of high-pressure water system, all high-pressure water must flow through the unloading valve, resulting in significant pressure loss and excessive energy consumption. Furthermore, the one-way valve built into the unloading valve is subjected to high flow impact for a long time, making it extremely prone to damage and affecting the stability of the system operation. Summary of the Invention

[0005] The purpose of this invention is to provide a water system for a sweeper truck that can effectively reduce pressure loss and energy consumption, and improve system stability.

[0006] Another objective of this invention is to provide a control method for the water system of a sweeper truck, which can effectively reduce pressure loss and energy consumption, and improve system stability. Another objective of this invention is to provide a sweeper truck that features lower energy consumption and higher operational stability.

[0007] An embodiment of the present invention provides a technical solution: A water system for a sweeper truck includes a water tank, a water pump, a spray gun, a water distribution valve group, an unloading valve, a first pipeline, a second pipeline, and a third pipeline. The input end of the water pump is in fluid communication with the water tank, and the output end of the water pump is connected to the spray gun through the first pipeline and to the water distribution valve group through the second pipeline. The water distribution valve group has at least one first valve connected to a continuous water supply pipeline. The unloading valve is installed on the first pipeline. One end of the third pipeline is connected to the first pipeline, and the connection position is between the unloading valve and the spray gun. The other end of the third pipeline is connected to the second pipeline. A second valve is installed on the third pipeline.

[0008] In an optional embodiment, a third valve is provided on the first pipeline, and the third valve is located downstream of the connection point between the third pipeline and the first pipeline.

[0009] In an optional embodiment, the water distribution valve assembly also has a fourth valve connected to the water tank via an unloading pipeline.

[0010] In an optional embodiment, the continuous water supply pipeline includes a right spray bar pipeline, a nozzle spray bar pipeline, a self-cleaning pipeline, and a left spray bar pipeline, and the four first valves are connected to the left spray bar pipeline, the nozzle spray bar pipeline, the self-cleaning pipeline, and the left spray bar pipeline one by one.

[0011] In an optional embodiment, a water filtration device is also included, which is disposed at the input end of the water pump.

[0012] In an optional embodiment, a pressure gauge is also included, which is disposed at the output end of the water pump.

[0013] An embodiment of the present invention also provides a control method for a sweeper truck water system, applied to a sweeper truck water system. The sweeper truck water system includes a water tank, a water pump, a spray gun, a water distribution valve group, an unloading valve, a first pipeline, a second pipeline, and a third pipeline. The input end of the water pump is in fluid communication with the water tank, and the output end of the water pump is connected to the spray gun through the first pipeline and to the water distribution valve group through the second pipeline. The unloading valve is disposed on the first pipeline. One end of the third pipeline is connected to the first pipeline, and the connection position is between the unloading valve and the spray gun. The other end of the third pipeline is connected to the second pipeline. The water distribution valve assembly has at least one first valve connected to a continuous water supply pipeline, and a fourth valve connected to the water tank via an unloading pipeline; a second valve is installed on the third pipeline; a third valve is installed on the first pipeline, and the third valve is located downstream of the connection point between the third pipeline and the first pipeline; the water system control method for the sweeper truck includes: With the first valve and the third valve both closed, the second valve and the fourth valve are kept open. After the first valve is opened, the second valve is kept open, and the fourth valve is switched from the open state to the closed state. After the third valve is opened, the second and fourth valves are switched from the open state to the closed state.

[0014] Embodiments of the present invention also provide a sweeper truck, including the aforementioned sweeper truck water system; and / or, It includes a controller for executing the aforementioned water system control method for the sweeper truck.

[0015] Compared to existing technologies, the sweeper water system provided by this invention separates and separately arranges the intermittently operating spray guns and water distribution valve group. When the continuous water supply pipeline connected to the water distribution valve group is working, most of the water output from the pump can flow directly to the water distribution valve group through the second pipeline. The remaining portion flows back to the water distribution valve group through the unloading valve, the third pipeline, and the second pipeline. In this case, the flow rate through the unloading valve is significantly reduced, resulting in a substantial reduction in pressure loss, and the impact on the built-in one-way valve is also greatly reduced. Furthermore, when the continuous water supply pipeline connected to the water distribution valve group is working, the overflow function of the unloading valve can be triggered normally; when switching to the operation of the spray guns that require intermittent operation, both the unloading and overflow functions of the unloading valve can be triggered normally, meeting system requirements. Therefore, the beneficial effects of the sweeper water system provided by this invention include: effectively reducing pressure loss and energy consumption, and improving system stability. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of the present invention and should not be considered as limiting the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A schematic diagram of the water system of a sweeper truck provided as an embodiment of the present invention; Figure 2 A schematic diagram of another water system for a sweeper truck provided as an embodiment of the present invention.

[0018] Figure 3 A flowchart illustrating the water system control method for a sweeper truck provided in an embodiment of the present invention.

[0019] Icons: 100 - Water system of sweeper truck; 110 - Water tank; 120 - Water pump; 130 - Spray gun; 131 - Pipe connector; 140 - Water distribution valve group; 150 - Unloading valve; 160 - First pipeline; 170 - Second pipeline; 180 - Third pipeline; 190 - First valve; 210 - Second valve; 220 - Third valve; 230 - Fourth valve; 240 - Right spray bar pipeline; 250 - Suction nozzle spray bar pipeline; 260 - Self-cleaning pipeline; 270 - Left spray bar pipeline; 280 - Water filter device; 290 - Pressure gauge. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0022] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0023] In the description of this invention, it should be understood that the terms "upper," "lower," "inner," "outer," "left," "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used to facilitate the description of this invention and to simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0024] Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0025] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, terms such as "set" and "connection" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0026] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0027] Example Please see Figure 1 , Figure 1 The diagram shown is a structural schematic of a sweeper water system 100 provided in this embodiment.

[0028] The water system 100 for the sweeper truck provided in this embodiment is applied to the sweeper truck and can effectively reduce pressure loss and energy consumption, and improve system stability.

[0029] The sweeper truck's water system 100 includes a water tank 110, a water pump 120, a spray gun 130, a water distribution valve group 140, an unloading valve 150, a first pipeline 160, a second pipeline 170, and a third pipeline 180. The input end of the water pump 120 is in fluid communication with the water tank 110. The output end of the water pump 120 is connected to the spray gun 130 through the first pipeline 160 and to the water distribution valve group 140 through the second pipeline 170. The water distribution valve group 140 has at least one first valve 190 connected to a continuous water supply pipeline. The unloading valve 150 is disposed on the first pipeline 160. One end of the third pipeline 180 is connected to the first pipeline 160, and the connection position is between the unloading valve 150 and the spray gun 130. The other end of the third pipeline 180 is connected to the second pipeline 170. A second valve 210 is disposed on the third pipeline 180.

[0030] It is understood that in this embodiment, the spray gun 130 is arranged separately from the water distribution valve group 140, and the water pump 120 supplies water to the spray gun 130 separately through the first pipeline 160. When the water pump 120 supplies water to the water distribution valve group 140, most of the high-pressure water output by the water pump 120 flows directly into the water distribution valve group 140 through the second pipeline 170, and the remaining part flows through the unloading valve 150 on the first pipeline 160, and merges into the second pipeline 170 through the third pipeline 180, and finally flows into the water distribution valve group 140.

[0031] Under these circumstances, the water flow through the unloading valve 150 is significantly reduced, which greatly reduces the pressure loss caused by it, and the impact on the one-way valve built into the unloading valve 150 is also greatly reduced, ensuring that the unloading valve 150 can operate stably for a long time, thereby improving the stability of the system.

[0032] A third valve 220 is installed on the first pipeline 160, and the third valve 220 is located downstream of the connection point between the third pipeline 180 and the first pipeline 160. It is understood that when a continuous water supply pipeline connected to a certain first valve 190 on the water distribution valve group 140 is in operation, the third valve 220 remains closed, allowing all the high-pressure water output by the water pump 120 to flow to the target continuous water supply pipeline. When the system switches to the operating state of the spray gun 130, the first valve 190 on the water distribution valve group 140 closes, and the third valve 220 on the first pipeline 160 opens.

[0033] Preferably, in this embodiment, the continuous water supply pipeline includes a right spray bar pipeline 240, a nozzle spray bar pipeline 250, a self-cleaning pipeline 260, and a left spray bar pipeline 270, with four first valves 190 connected to the left spray bar pipeline 270, the nozzle spray bar pipeline 250, the self-cleaning pipeline 260, and the left spray bar pipeline 270.

[0034] The water distribution valve assembly 140 also has a fourth valve 230 connected to the water tank 110 via an unloading pipeline. In fact, the second valve 210 and the fourth valve 230 are normally open to facilitate the no-load start-up of the water pump 120. When a continuous water supply pipeline connected to a first valve 190 on the water distribution valve assembly 140 starts working, the corresponding first valve 190 opens, the second valve 210 remains open, and the fourth valve 230 closes, so that all the high-pressure water output by the water pump 120 can flow into the continuous water supply pipeline.

[0035] For example, if the right spray bar pipe 240 starts working, the first valve 190 connected to the right spray bar pipe 240 opens, the second valve 210 remains open, and the fourth valve 230 closes. At this time, all the water input by the water pump 120 flows into the right spray bar pipe 240.

[0036] Understandably, the P port and A port of the unloading valve 150 are connected to the first pipeline 160. The P port corresponds to the output end of the water pump 120, and the A port corresponds to the spray gun 130. The T port of the unloading valve 150 is in fluid communication with the water tank 110. Under any continuous water supply pipeline operation, since the pipeline downstream of the unloading valve 150 is unobstructed, the unloading function of the unloading valve 150 is not triggered, but the overflow function can be triggered normally. That is, when the system pressure reaches its set pressure, the unloading valve 150 unloads part of the flow through the T port.

[0037] In practical applications, the water flow rate in the first pipe 160 and the second pipe 170 can be adjusted by changing the inner diameter of the pipes and the inner diameter of the second valve 210. Alternatively, a damping orifice can be added to the first pipe 160 or the second pipe 170 to control the flow rate.

[0038] When spray gun 130 is needed, third valve 220 opens, and second valve 210 and fourth valve 230 close. All high-pressure water output from water pump 120 flows into first pipeline 160, and then through unloading valve 150 to spray gun 130. If spray gun 130 is not open, the valve core of unloading valve 150 is completely opened by the high-pressure water downstream of its one-way valve and between it and spray gun 130. The unloading function of unloading valve 150 is triggered, and the high-pressure water generated by water pump 120 flows back to water tank 110 through T-port in a low-pressure return manner.

[0039] When the spray gun 130 is opened, the water pressure between the one-way valve of the unloading valve 150 and the spray gun 130 decreases, the valve core returns to its original position, and the high-pressure water generated by the water pump 120 is sprayed out from the spray gun 130 at the set pressure. At this time, the unloading valve 150 performs the overflow function. When the pressure in the system is too high, the valve core will be partially pushed open, and the excess flow overflows through the T port, maintaining the system pressure at the set pressure.

[0040] As can be seen, in this embodiment, the overflow function of the unloading valve 150 can be triggered normally when the water pipeline is continuously operating. When the spray gun 130 is operating intermittently, both the overflow and unloading functions of the unloading valve 150 can be triggered normally, meeting the different operating conditions of the system. Compared with traditional water systems, this method saves costs, reduces pressure loss, lessens wear on the unloading valve 150, and improves the stability of system operation.

[0041] In addition, the sweeper water system 100 provided in this embodiment also includes an inlet ball valve, a water filter device 280 and a pressure gauge 290. The inlet ball valve and the water filter device 280 are sequentially arranged on the pipeline between the input end of the water pump 120 and the water tank 110. The inlet ball valve can control the input flow of the water pump 120, and the water filter device 280 can filter the water flowing to the water pump 120. The pressure gauge 290 is arranged at the output end of the water pump 120 and is used to monitor the system pressure.

[0042] In summary, the sweeper water system 100 provided in this embodiment can effectively reduce pressure loss and energy consumption, and improve system stability.

[0043] Please see Figure 2 , Figure 2 The diagram shown is a structural schematic of another sweeper water system 100 provided in this embodiment.

[0044] Compared to Figure 1 The structure shown. Figure 2 The difference in the provided sweeper water system 100 is that the spray gun 130 is connected to the first pipe 160 through the pipe connector 131, and the third valve 220 is not required on the first pipe 160. The spray gun 130 has its own switch, which has the same function as the third valve 220.

[0045] In other words, Figure 2 The water system 100 shown for the sweeper truck is equivalent to... Figure 1 The third valve 220 in the structure shown is integrated with the spray gun 130 into a single unit.

[0046] Furthermore, this embodiment also provides a control method for the water system of a sweeper truck, applicable to any of the aforementioned sweeper truck water system 100. Please refer to the following references. Figure 3 , Figure 3The diagram shown is a flowchart of the water system control method for the sweeper truck. Specifically, the water system control method for the sweeper truck includes: In step S101, with the first valve 190 and the third valve 220 both closed, the second valve 210 and the fourth valve 230 are kept open.

[0047] That is, the second valve 210 and the fourth valve 230 are normally open, so that the water pump 120 can start without load.

[0048] In step S102, after controlling the first valve 190 to open, the second valve 210 is kept open, and the fourth valve 230 is switched from the open state to the closed state.

[0049] When the continuous water supply pipeline connected to a certain first valve 190 on the water distribution valve group 140 starts working, the first valve 190 corresponding to the continuous water supply pipeline opens, controls the second valve 210 to remain open, and controls the fourth valve 230 to close, so that all the high-pressure water output by the water pump 120 can flow into the continuous water supply pipeline.

[0050] In this working state, since the downstream pipeline of the unloading valve 150 is unobstructed, the unloading function of the unloading valve 150 is not triggered, but the overflow function can be triggered normally. That is, when the system pressure reaches its set pressure, the unloading valve 150 unloads part of the flow through the T port.

[0051] In step S103, after the third valve 220 is opened, the second valve 210 and the fourth valve 230 are switched from the open state to the closed state.

[0052] When the spray gun 130 is needed, the third valve 220 is opened, and then the second valve 210 and the fourth valve 230 are closed, so that all the high-pressure water output by the water pump 120 flows into the first pipeline 160 and then flows to the spray gun 130 through the unloading valve 150.

[0053] In this state, if the spray gun 130 is not opened, the valve core of the unloading valve 150 is completely opened by the high-pressure water between its one-way valve downstream and the spray gun 130, the unloading function of the unloading valve 150 is triggered, and the high-pressure water generated by the water pump 120 flows back to the water tank 110 through the T port in a low-pressure return manner.

[0054] When the spray gun 130 is opened, the water pressure between the one-way valve of the unloading valve 150 and the spray gun 130 decreases, the valve core returns to its original position, and the high-pressure water generated by the water pump 120 is sprayed out from the spray gun 130 at the set pressure. At this time, the unloading valve 150 performs the overflow function. When the pressure in the system is too high, the valve core will be partially pushed open, and the excess flow overflows through the T port, maintaining the system pressure at the set pressure.

[0055] As can be seen, the water system control method for the sweeper truck provided in this embodiment can effectively reduce pressure loss and energy consumption, and improve system stability.

[0056] In addition, this embodiment also provides a sweeper truck equipped with the aforementioned sweeper truck water system 100. Furthermore, the sweeper truck also has a controller for executing the aforementioned sweeper truck water system control method.

[0057] For example, when any continuous water supply pipeline needs to be started, the controller first controls the corresponding first valve 190 to open, then controls the fourth valve 230 to close from the open state, and controls the second valve 210 to remain open, so that all the high-pressure water output by the water pump 120 can flow into the continuous water supply pipeline; when the spray gun 130 needs to be started, the controller first controls the third valve 220 to open, then controls the second valve 210 and the fourth valve 230 to close from the open state, so that all the high-pressure water output by the water pump 120 flows to the spray gun 130.

[0058] Benefiting from the beneficial effects of the sweeper water system 100, the sweeper provided in this embodiment also has the characteristics of lower energy consumption and higher operational stability.

[0059] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A water system for a sweeper truck, characterized in that, The system includes a water tank (110), a water pump (120), a spray gun (130), a water distribution valve assembly (140), an unloading valve (150), a first pipeline (160), a second pipeline (170), and a third pipeline (180). The input end of the water pump (120) is in fluid communication with the water tank (110), and the output end of the water pump (120) is connected to the spray gun (130) through the first pipeline (160) and to the water distribution valve assembly (140) through the second pipeline (170). The water distribution valve assembly (140) has at least one first valve (190) connected to a continuous water supply pipeline. The unloading valve (150) is installed on the first pipeline (160). One end of the third pipeline (180) is connected to the first pipeline (160), and the connection position is between the unloading valve (150) and the spray gun (130). The other end of the third pipeline (180) is connected to the second pipeline (170). A second valve (210) is installed on the third pipeline (180).

2. The water system for the sweeper truck according to claim 1, characterized in that, A third valve (220) is provided on the first pipeline (160), and the third valve (220) is located downstream of the connection position between the third pipeline (180) and the first pipeline (160).

3. The water system for the sweeper truck according to claim 1, characterized in that, The water distribution valve assembly (140) also has a fourth valve (230) connected to the water tank (110) via an unloading pipeline.

4. The water system for the sweeper truck according to claim 1, characterized in that, The continuous water supply pipeline includes a right spray bar pipeline (240), a nozzle spray bar pipeline (250), a self-cleaning pipeline (260), and a left spray bar pipeline (270). The four first valves (190) are connected to the left spray bar pipeline (270), the nozzle spray bar pipeline (250), the self-cleaning pipeline (260), and the left spray bar pipeline (270) one by one.

5. The water system for the sweeper truck according to claim 1, characterized in that, It also includes a water filter device (280), which is located at the input end of the water pump (120).

6. The water system for the sweeper truck according to claim 1, characterized in that, It also includes a pressure gauge (290), which is located at the output end of the water pump (120).

7. A control method for the water system of a sweeper truck, applied to the water system of a sweeper truck, characterized in that, The sweeper's water system includes a water tank (110), a water pump (120), a spray gun (130), a water distribution valve group (140), an unloading valve (150), a first pipeline (160), a second pipeline (170), and a third pipeline (180). The input end of the water pump (120) is in fluid communication with the water tank (110), and the output end of the water pump (120) is connected to the spray gun (130) through the first pipeline (160) and to the water distribution valve group (140) through the second pipeline (170). The unloading valve (150) is installed on the first pipeline (160). One end of the third pipeline (180) is connected to the first pipeline (160), and the connection position is between the unloading valve (150) and the spray gun (130). The other end of the third pipeline (180) is connected to the second pipeline (170). The water distribution valve group (140) has at least one first valve (190) connected to a continuous water supply pipeline, and a fourth valve (230) connected to the water tank (110) via an unloading pipeline; a second valve (210) is provided on the third pipeline (180); a third valve (220) is provided on the first pipeline (160), and the third valve (220) is located downstream of the connection position between the third pipeline (180) and the first pipeline (160); the water system control method for the sweeper includes: With the first valve (190) and the third valve (220) both closed, the second valve (210) and the fourth valve (230) are kept open. After the first valve (190) is opened, the second valve (210) is kept open, and the fourth valve (230) is switched from the open state to the closed state. After the third valve (220) is opened, the second valve (210) and the fourth valve (230) are switched from the open state to the closed state.

8. A sweeper truck, characterized in that, Includes the water system (100) for the sweeper truck as described in any one of claims 1-6; and / or, Includes a controller, which is used to perform the water system control method for a sweeper truck as described in claim 7.

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