Sweeping vehicle air blowing drainage system and control method thereof, and sweeping vehicle

Abstract

The application discloses a kind of sweeper air blowing drainage systems and control method thereof, sweeper, belong to road cleaning equipment technical field, a kind of sweeper air blowing drainage systems, by setting drain pipe, intermediate pipeline, outlet pipe and air inlet pipe, directly connect gas circuit system into vehicle-mounted high-pressure water system, simultaneously by controller, first control valve, second control valve and main control valve control air blowing drainage pipeline's on-off, before cleaning task starts, close first control valve and second control valve, open main control valve, so that water in vehicle-mounted high-pressure water system cannot enter into gas circuit system, after cleaning task, close main control valve, open first control valve, second control valve and gas circuit system, so that air blown by gas circuit system enters intermediate pipeline from air inlet pipe, then enters drain pipe from intermediate pipeline, electric control is used to connect gas circuit system into vehicle-mounted high-pressure water system, avoid the case of frequent disassembly and assembly interface, improve drainage efficiency.

Description

Technical Field

[0001] This invention relates to a sweeper vehicle air-blowing drainage system and its control method, as well as the sweeper vehicle itself, belonging to the technical field of road sweeping equipment. Background Technology

[0002] As a type of road sweeper, the sweeper truck is equipped with a high-pressure water system for high-pressure washing of roads. After operation ceases, the water in the pipes and pump of the high-pressure water system cannot be completely drained. In winter, when temperatures drop below 0°C, the water inside the pipes and pump freezes, potentially damaging them. To prevent this damage, a blower system is typically installed in the high-pressure water system of the sweeper truck. This system blows air into the pump and pipes to expel the remaining water, thus preventing damage from freezing.

[0003] The existing air-blowing drainage system is mainly connected to the high-pressure water system externally. It is mainly done manually by connecting the air pipe of the air system to the air-blowing connector on the high-pressure water system to connect the air system and the high-pressure water system. After the drainage is completed, the air pipe is pulled out. Since manual operation is required every time drainage is performed, on the one hand, human error may easily lead to forgetting to disconnect the air pipe from the air-blowing connector or forgetting to close the valve. On the other hand, repeated use may cause valve wear and sealing failure. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a sweeper air-blowing drainage system and its control method. The sweeper uses an electronic control method to connect the air circuit system to the vehicle-mounted high-pressure water circuit system, avoiding frequent disassembly and assembly of the interface, improving drainage efficiency, and solving the problems of frequent disassembly and assembly of the connection structure, low drainage efficiency, and easy failure of the joints in the current air-blowing drainage system that is connected to the high-pressure water circuit system by an external connection.

[0005] To solve the above-mentioned technical problems, the present invention is implemented using the following technical solution: This invention provides a sweeper vehicle air-blowing drainage system, comprising: The drain pipe is equipped with a first control valve, and the outlet end of the drain pipe is connected to the vehicle-mounted high-pressure water system. The intermediate pipeline is connected at one end to the inlet of the drain pipe and at the other end to a main control valve. The outlet pipe is connected at one end to the main control valve and at the other end to the atmosphere; The gas supply system is used to provide the exhaust gas source; An air intake pipe is provided with a second control valve. The air intake end of the air intake pipe is connected to the air circuit system, and the air outlet end of the air intake pipe is connected to the intermediate pipeline. The controller is electrically connected to the main control valve, the first control valve, and the second control valve, respectively. Before the cleaning task begins and during the cleaning task, the controller controls the first control valve and the second control valve to close, and controls the main control valve to open. When the cleaning task ends, the controller controls the first control valve and the second control valve to open, and controls the main control valve to close.

[0006] Optionally, the diameter of the outlet pipe is not less than the diameter of the drain pipe.

[0007] Optionally, a protection mechanism is also provided on the intermediate pipeline; The protective mechanism includes a container with a cavity; The container has a first port and a second port below the first port; the first port is connected to the intermediate pipeline, and the second port is connected to the main control valve. The air outlet of the air inlet pipe is connected to the container, and the connection between the air inlet pipe and the container is higher than the second port.

[0008] Optionally, the container includes a top plate, a bottom plate, and side plates; The top plate and the bottom plate are respectively located at the top and bottom of the side plate and form a first cavity inside the side plate. The first port is opened on the top plate and the second port is opened on the bottom plate.

[0009] Optionally, the protective mechanism further includes an inner layer plate disposed inside the container; One end of the inner layer plate is connected to the top plate and communicates with the first port, while the other end extends away from the top plate and maintains a gap with the second port, forming a second cavity that communicates with the first cavity.

[0010] Optionally, the air intake pipe is further provided with a one-way valve; the one-way valve opens when gas enters the air intake pipe from the intake end, and the gas enters the container through the one-way valve from the air intake pipe.

[0011] Optionally, the container is further provided with a water level monitoring mechanism for obtaining the real-time water level in the container, and the water level monitoring mechanism is electrically connected to the controller.

[0012] A second aspect of the present invention also provides a sweeper vehicle, including the aforementioned sweeper vehicle air-blowing drainage system.

[0013] In another aspect, the present invention provides a control method for a sweeper vehicle's air-blowing drainage system, the method being used to control the aforementioned sweeper vehicle's air-blowing drainage system, comprising: Before the cleaning task begins, close the first and second control valves and open the main control valve; After the cleaning task is completed, close the main control valve and open the first control valve, the second control valve, and the air circuit system.

[0014] Furthermore, the method also includes: Get the real-time water level in the container; If the water level in the container is higher than the preset value, the first and second control valves will be closed, and the main control valve will be opened.

[0015] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: 1. This invention directly connects the air system to the vehicle-mounted high-pressure water system by setting up a drain pipe, intermediate pipe, water outlet pipe, and air inlet pipe. Simultaneously, the on / off state of the air-blowing drainage pipe is controlled by a controller, a first control valve, a second control valve, and a main control valve. Before the cleaning task begins, the first and second control valves are closed, and the main control valve is opened, preventing water from the vehicle-mounted high-pressure water system from entering the air system. After the cleaning task is completed, the main control valve is closed, and the first and second control valves and the air system are opened, allowing air blown from the air system to enter the intermediate pipe through the air inlet pipe, then the drain pipe, and finally the vehicle-mounted high-pressure water system, discharging the water pump and water stored in the pipes. Using an electronically controlled connection, the air system is integrated into the vehicle-mounted high-pressure water system, avoiding frequent disassembly and reassembly of the interface, improving drainage efficiency, and solving the problems of frequent disassembly and reassembly of the connection structure, low drainage efficiency, and easy joint failure in current air-blowing drainage systems that use external connections to the high-pressure water system.

[0016] 2. The present invention also includes a protection mechanism. In the event of failure of the first control valve, the water flow is buffered and stored in the container, and discharged to the atmosphere through the outlet pipe and the main control valve, thus preventing the water flow from directly entering the air circuit system through the air inlet pipe. In addition, by setting a second cavity inside the container that is connected to the first cavity, the water flow is further restricted from directly entering the air inlet pipe through the middle pipe by blocking the water flow entering the container through the inner layer plate, without interfering with the drainage effect of the container.

[0017] 3. The present invention also includes a water level monitoring mechanism in the container. In the event that the first control valve fails and the main control valve is not opened, the main control valve is forcibly opened to drain the water when the real-time water level in the container is higher than the preset value, in conjunction with the preset value. This prevents the water in the container from overflowing into the air inlet pipe from the connection between the air inlet pipe and the container, thus improving redundancy.

[0018] 4. The present invention also includes a one-way valve in the air intake pipe. The one-way valve opens when gas enters the air intake pipe from the intake end, and the gas enters the container through the one-way valve from the air intake pipe. Even if the water in the container cannot be discharged in time due to a failure of the main control valve, the one-way valve can limit the further penetration of the water overflowing into the air intake pipe, thereby improving the protection of the gas circuit system. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of a sweeper air-blowing drainage system provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the overall structure of a sweeper air-blowing drainage system provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of the container structure provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of the air path of an air-blowing drainage system for a sweeper provided in an embodiment of the present invention; (the arrows in the diagram indicate the air blowing direction). Figure 5 This is a schematic diagram of a sweeper's air-blowing drainage system draining water from its container, according to an embodiment of the present invention. (The arrows in the diagram indicate the direction of water drainage.) In the diagram: 1. Drainage pipe; 101. First control valve; 2. Intermediate pipeline; 201. Main control valve; 3. Water outlet pipe; 4. Gas system; 5. Air inlet pipe; 501. Second control valve; 502. Check valve; 6. Container; 601. Top plate; 6011. First port; 602. Bottom plate; 6021. Second port; 603. Side plate; 604. Inner plate; 605. First cavity; 606. Second cavity; 7. Water level monitoring mechanism; 8. Vehicle-mounted high-pressure water system. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention.

[0022] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0023] like Figure 1As shown, at least one embodiment provides a sweeper air-blowing drainage system, including a drain pipe 1, an intermediate pipe 2, a water outlet pipe 3, an air circuit system 4, an air inlet pipe 5, and a controller (not shown). The outlet end of the drain pipe 1 is connected to the vehicle-mounted high-pressure water system 8, and the inlet end is equipped with a first control valve 101, which is connected to one end of the intermediate pipe 2. The other end of the intermediate pipe 2 is equipped with a main control valve 201, which is connected to one end of the outlet pipe 3. The other end of the outlet pipe 3 is connected to the atmosphere. The diameter of the outlet pipe 3 is not less than the diameter of the drain pipe 1.

[0024] The intake end of the intake pipe 5 is equipped with a second control valve 501, the outlet end is connected to the intermediate pipe 2, the second control valve 501 is connected to the air circuit system 4, and the controller is electrically connected to the main control valve 201, the first control valve 101 and the second control valve 501 respectively.

[0025] In some embodiments, the air circuit system 4 can be directly connected to the vehicle-mounted high-pressure water circuit system 8 through the drain pipe 1, intermediate pipe 2, water outlet pipe 3, and air inlet pipe 5. The air-blowing drain pipe 1 is controlled by a controller, a first control valve 101, a second control valve 501, and a main control valve 201. Before the cleaning task begins, the first control valve 101 and the second control valve 501 are closed, and the main control valve 201 is opened, so that water in the vehicle-mounted high-pressure water circuit system 8 cannot enter the air circuit system 4. After the cleaning task is completed, the main control valve 201 is closed, and the first control valve 101, the second control valve 501, and the air circuit system 4 are opened, so that the air blown out by the air circuit system 4 enters the intermediate pipe 2 through the air inlet pipe 5, then enters the drain pipe 1 through the intermediate pipe 2, and finally enters the vehicle-mounted high-pressure water circuit system 8 to discharge the water pump and the water stored in the pipes.

[0026] like Figure 2 As shown, some embodiments also provide a sweeper air-blowing drainage system, including a drain pipe 1, an intermediate pipe 2, a water outlet pipe 3, an air circuit system 4, an air inlet pipe 5, and a controller (not shown); the water outlet of the drain pipe 1 is connected to the vehicle-mounted high-pressure water circuit system 8, and the water inlet is equipped with a first control valve 101, which is connected to one end of the intermediate pipe 2; the other end of the intermediate pipe 2 is provided with a protection mechanism, which includes a container 6 with a cavity.

[0027] As a preferred embodiment, such as Figure 2 and Figure 3As shown, container 6 includes a top plate 601, a bottom plate 602, and a side plate 603; the top plate 601 and the bottom plate 602 are respectively fixed to the top and bottom of the side plate 603 and form a first cavity 605 inside the side plate 603; a first port 6011 is opened on the top plate 601, and a second port 6021 is opened on the bottom plate 602, wherein the first port 6011 is connected to the other end of the intermediate pipe 2, and a main control valve 201 is installed on the second port 6021. The main control valve 201 is connected to one end of the water outlet pipe 3, and the other end of the water outlet pipe 3 is connected to the atmosphere.

[0028] In some embodiments, a second control valve 501 is installed at the air inlet end of the air inlet pipe 5, and the second control valve 501 is connected to the air circuit system 4. A one-way valve 502 is also installed at the air outlet end of the air inlet pipe 5. The one-way valve 502 is connected to the side plate 603, and the connection between the one-way valve 502 and the side plate 603 is higher than the second port 6021. The opening direction of the one-way valve 502 is that after the air inlet pipe 5 enters the gas from the air inlet end, the one-way valve 502 opens, and the gas enters the container 6 from the air inlet pipe 5 through the one-way valve 502. The controller is electrically connected to the main control valve 201, the first control valve 101 and the second control valve 501 respectively.

[0029] The protection mechanism allows the water flow to be buffered and stored in the container 6 in the event of failure of the first control valve 101, preventing the water flow from directly entering the air circuit system 4 through the air inlet pipe 5.

[0030] like Figure 2 and Figure 3 As shown, in order to enhance the protection of the gas system 4, the protection mechanism also includes an inner plate 604 located inside the container 6; the top of the inner plate 604 is connected to the top plate 601 and communicates with the first port 6011, and the bottom of the inner plate 604 extends downward and maintains a gap with the second port 6021 to form a second cavity 606 that communicates with the first cavity 605; under the premise of avoiding interference with the drainage effect of the container 6, the inner plate 604 further restricts the path of water flow directly from the intermediate pipe 2 to the air inlet pipe 5 by blocking the water flow entering the container 6.

[0031] To improve protection redundancy, such as Figure 5As shown, the container 6 is equipped with a water level monitoring mechanism 7 for obtaining the real-time water level in the container 6. In this embodiment, the water level monitoring mechanism 7 adopts a water level sensor, which is electrically connected to the controller. When the first control valve 101 fails and the main control valve 201 is not opened, the main control valve 201 is forcibly opened to drain the water when the real-time water level in the container 6 is higher than the preset value, in accordance with the preset value. This prevents the water in the container 6 from overflowing into the air inlet pipe 5 from the connection between the air inlet pipe 5 and the container 6. In addition, when the main control valve 201 fails to drain the water in the container 6 in time, the one-way valve 502 can also limit the further penetration of the water overflowing into the air inlet pipe 5, thereby improving the protection of the air circuit system 4.

[0032] At least one embodiment also provides a control method for a sweeper's air-blowing drainage system, used to control the sweeper's air-blowing drainage system in Embodiment 2, including: before the sweeping task begins, closing the first control valve 101 and the second control valve 501, and opening the main control valve 201; after the sweeping task is completed, as follows: Figure 4 As shown, the main control valve 201 is closed, and the first control valve 101, the second control valve 501, and the air system 4 are opened. The air system 4 blows air into the air intake pipe 5 through the second control valve. The air enters the container 6 through the one-way valve 502 and enters the second cavity 606 from the bottom of the inner layer plate 604 through the bottom of the first cavity 605. The air then leaves the container 6 through the first port 6011 from the top of the inner layer plate 604 and enters the intermediate pipe 2. The air entering the intermediate pipe 2 then enters the drain pipe 1 through the first control valve. Finally, the air enters the vehicle-mounted high-pressure water system 8 from the outlet of the drain pipe 1, which discharges the water pump and the water stored in the pipe.

[0033] In some embodiments, the control method further includes: acquiring the real-time water level in container 6; and if the water level in container 6 is higher than a preset value, closing the first control valve 101 and the second control valve 501 and opening the main control valve 201.

[0034] At least one embodiment also provides a sweeper vehicle including the above-described sweeper vehicle air-blowing drainage system.

[0035] In the description of this invention, it should be understood that the terms "upper," "lower," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention 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, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature.

[0036] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0037] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A sweeper vehicle air-blowing drainage system, characterized in that, include: The drain pipe (1) is equipped with a first control valve (101), and the outlet end of the drain pipe (1) is connected to the vehicle-mounted high-pressure water system (8); The intermediate pipeline (2) is connected at one end to the inlet end of the drain pipe (1) and at the other end is a main control valve (201). The outlet pipe (3) is connected at one end to the main control valve (201) and at the other end to the atmosphere; Gas system (4) is used to provide a source of exhaust gas; The air intake pipe (5) is equipped with a second control valve (501). The air intake end of the air intake pipe (5) is connected to the air circuit system (4), and the air outlet end of the air intake pipe (5) is connected to the intermediate pipeline (2). The controller is electrically connected to the main control valve (201), the first control valve (101), and the second control valve (501), respectively. Before the cleaning task begins and during the cleaning task, the controller controls the first control valve (101) and the second control valve (501) to close and controls the main control valve (201) to open. When the cleaning task ends, the controller controls the first control valve (101) and the second control valve (501) to open and controls the main control valve (201) to close. The intermediate pipeline (2) is also equipped with a protection mechanism; The protective mechanism includes a container (6) with a cavity; The container (6) has a first port (6011) and a second port (6021) below the first port (6011); the first port (6011) is connected to the intermediate pipeline (2), and the second port (6021) is connected to the main control valve (201); The air outlet of the air inlet pipe (5) is connected to the container (6), and the connection between the air inlet pipe (5) and the container (6) is higher than the second port (6021). The container (6) includes a top plate (601), a bottom plate (602), and a side plate (603). The top plate (601) and the bottom plate (602) are respectively disposed on the top and bottom of the side plate (603) and form a first cavity (605) inside the side plate (603). The first port (6011) is opened on the top plate (601) and the second port (6021) is opened on the bottom plate (602). The protective mechanism also includes an inner layer plate (604) disposed inside the container (6). One end of the inner layer plate (604) is connected to the top plate (601) and communicates with the first port (6011), while the other end extends away from the top plate (601) and maintains a gap with the second port (6021), forming a second cavity (606) that communicates with the first cavity (605).

2. The sweeper vehicle air-blowing drainage system according to claim 1, characterized in that, The diameter of the outlet pipe (3) is not less than the diameter of the drain pipe (1).

3. The sweeper vehicle air-blowing drainage system according to claim 1, characterized in that, The air inlet pipe (5) is also provided with a one-way valve (502); the opening direction of the one-way valve (502) is that after the air inlet pipe (5) enters the gas from the air inlet end, the one-way valve (502) opens, and the gas enters the container (6) from the air inlet pipe (5) through the one-way valve (502).

4. The sweeper vehicle air-blowing drainage system according to claim 1, characterized in that, The container (6) is also provided with a water level monitoring mechanism (7) for obtaining the real-time water level in the container (6), and the water level monitoring mechanism (7) is electrically connected to the controller.

5. A sweeper vehicle, characterized in that, Includes the sweeper air-blowing drainage system as described in any one of claims 1-4.

6. A control method for a sweeper's air-blowing drainage system, characterized in that, The method is used to control the air-blowing drainage system of the sweeper according to any one of claims 1 to 4, comprising: Before the cleaning task begins, close the first control valve (101) and the second control valve (501), and open the main control valve (201). After the cleaning task is completed, close the main control valve (201) and open the first control valve (101), the second control valve (501) and the air circuit system (4).

7. The control method for the air-blowing drainage system of the sweeper according to claim 6, characterized in that, The method further includes: Obtain the real-time water level in container (6); If the water level in container (6) is higher than the preset value, the first control valve (101) and the second control valve (501) are closed, and the main control valve (201) is opened.

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