An air circuit system and a wash car

Abstract

The application provides a gas circuit system and a washing and sweeping vehicle, and relates to the technical field of cleaning. The gas circuit system comprises a gas source, a main pipeline, a valve box and a first actuating mechanism. The gas source is connected with the valve box through the main pipeline. The valve box is connected with the first actuating mechanism and controls the first actuating mechanism to execute a wet sweeping action or stop. A first branch is connected with the valve box in parallel on the main pipeline. A first valve body is arranged on the first branch. The first valve body is connected with the first actuating mechanism. The first actuating mechanism is controlled to stop through the valve box and the first valve body is opened. The gas from the gas source enters the first actuating mechanism through the first branch. The gas drives the liquid in the first actuating mechanism to be discharged from the first actuating mechanism. The liquid is prevented from being frozen in the first actuating mechanism to affect the normal use of the first actuating mechanism. The problems of water leakage, damage or failure of the first actuating mechanism are avoided. The service life of the first actuating mechanism is prolonged.

Description

Technical Field

[0001] This application relates to the field of clean technology, and more specifically, to an air circuit system and a sweeper truck. Background Technology

[0002] Sweeper trucks are specialized vehicles used for mechanized sweeping and flushing of urban roads and public places. They include a mechanical sweeping system, a high-pressure flushing system, and a garbage collection system. Their function far exceeds that of traditional sweeping, integrating flushing, sweeping, and collection. They can deeply clean the road surface and effectively suppress dust.

[0003] In winter, after the sweeper truck finishes its sweeping operation, some water stains will remain in the sweeping device. If not cleaned in time, the water stains can easily freeze inside the sweeping device, affecting its normal use and also causing problems such as leakage, damage or failure. Utility Model Content

[0004] The purpose of this application is to address the shortcomings of the prior art by providing an air circuit system and a sweeper truck, so as to solve the problem that the freezing of residual liquid in the sweeper truck affects the normal use of the sweeper truck and easily leads to water leakage, damage or failure of the sweeper truck.

[0005] To achieve the above objectives, the technical solutions adopted in the embodiments of this application are as follows: One aspect of this application provides a pneumatic system, including a gas source, a main pipeline, a valve box, and a first actuator. The gas source is connected to the valve box via the main pipeline. The valve box is connected to the first actuator and controls the first actuator to perform a wet sweeping action or to stop. A first branch is connected to the main pipeline in parallel with the valve box. A first valve body is provided on the first branch. The first valve body is connected to the first actuator. When the first actuator stops and the first valve body is open, the gas from the gas source entering the main pipeline enters the first actuator via the first branch to drive the liquid in the first actuator to be discharged.

[0006] Optionally, a check valve is also provided on the first branch, with the direction of conduction of the check valve being from the main pipeline to the first valve body.

[0007] Optionally, the first actuator includes a cylinder assembly and a wet sweeping device, the valve box is connected to the cylinder assembly, and the cylinder assembly and the wet sweeping device are driven to drive the wet sweeping device to perform a wet sweeping action or stop.

[0008] Optionally, the air circuit system also includes a dry cleaning device and a second actuator, with the valve box connected to the second actuator to control the second actuator to open and close the suction channel of the dry cleaning device. Optionally, the valve box is equipped with a reversing valve, a wet sweeping control valve, and a dry sweeping control valve. The air inlet of the reversing valve is connected to the main pipeline, the first switching port of the reversing valve is connected to the wet sweeping control valve, the second switching port of the reversing valve is connected to the dry sweeping control valve, the wet sweeping control valve is connected to the first actuator, and the dry sweeping control valve is connected to the second actuator.

[0009] Optionally, the second actuator includes a first cylinder and a gate, the valve box is connected to the first cylinder, and the first cylinder and the gate are driven to drive the gate to open and close the suction channel of the dry cleaning device. Optionally, the gas system also includes a second branch connected to the main pipeline. The second branch is connected in parallel with the valve box and the first branch. A second valve body is provided on the second branch. The second valve body is connected to the dry cleaning device. When the dry cleaning device stops and the second valve body opens, the gas source entering the main pipeline enters the dry cleaning device through the second branch to drive the adsorbent in the dry cleaning device out. Optionally, an air storage tank is also installed on the second branch, and the air storage tank is connected to the dry cleaning device via a second valve body.

[0010] Optionally, the gas circuit system also includes a pressure relief valve, a switch, and a pressure regulating filter valve arranged sequentially on the main pipeline; the pressure relief valve, the switch, and the pressure regulating filter valve are connected in series with the first branch, the valve box, and the second branch, respectively. In another aspect of this application, a sweeper truck is provided, including a vehicle body and the aforementioned air circuit system, wherein the air circuit system is disposed on the vehicle body.

[0011] The beneficial effects of this application include: This application provides a pneumatic system, including a gas source, a main pipeline, a valve box, and a first actuator. The gas source is connected to the valve box via the main pipeline. The valve box is connected to the first actuator and controls the first actuator to perform wet sweeping or stop. A first branch line connected in parallel with the valve box is connected to the main pipeline. A first valve body is installed on the first branch line and is connected to the first actuator. By controlling the first actuator to stop and opening the first valve body through the valve box, the gas from the gas source entering the main pipeline enters the first actuator via the first branch line. The gas drives the liquid inside the first actuator out of the first actuator, preventing the liquid from freezing inside the first actuator and affecting its normal operation. It also prevents the first actuator from leaking, breaking, or malfunctioning, thus improving the service life of the first actuator. Attached Figure Description

[0012] 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, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0013] Figure 1 This is one of the schematic diagrams of a gas path system provided in the embodiments of this application; Figure 2 This is a second schematic diagram of a gas path system structure provided in an embodiment of this application; Figure 3 This is the third schematic diagram of a gas path system structure provided in the embodiments of this application.

[0014] Icons: 100-Pneumatic system; 110-Pneumatic source; 120-Main pipeline; 130-Valve box; 140-First actuator; 141-Cylinder assembly; 142-Wet cleaning device; 150-First branch; 151-First valve body; 152-Check valve; 160-Dry cleaning device; 170-Second actuator; 171-First cylinder; 172-Gate; 180-Second branch; 181-Second valve body; 182-Air tank; 190-Pressure relief valve; 191-Switch; 192-Pressure regulating filter valve. Detailed Implementation

[0015] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. It should be noted that, unless otherwise specified, the various features in the embodiments of this application can be combined with each other, and the combined embodiments are still within the protection scope of this application.

[0016] 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.

[0017] In the description of this application, it should be noted that the terms "upper," "lower," "left," "right," "inner," and "outer," 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 is in use. 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, and therefore should not be construed as a limitation on this application. In addition, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0018] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" 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 can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0019] One aspect of the embodiments of this application, such as Figure 1 As shown, a pneumatic system 100 is provided, including a gas source 110, a main pipeline 120, a valve box 130, and a first actuator 140. The gas source 110 is connected to the valve box 130 via the main pipeline 120. The valve box 130 is connected to the first actuator 140 and controls the first actuator 140 to perform a wet sweeping action or stop. A first branch 150 is connected to the main pipeline 120 in parallel with the valve box 130. A first valve body 151 is provided on the first branch 150 and is connected to the first actuator 140. When the first actuator 140 stops and the first valve body 151 is open, the gas from the gas source 110 enters the main pipeline 120 via the first branch 150 and enters the first actuator 140 to drive the liquid in the first actuator 140 to be discharged.

[0020] Specifically, the pneumatic system 100 includes a gas source 110, a main pipeline 120, a valve box 130, and a first actuator 140. The gas source 110 and the valve box 130 are connected via the main pipeline 120; for example, the gas source 110 is connected to the inlet of the main pipeline 120, and the valve box 130 is connected to the outlet of the main pipeline 120. The valve box 130 is connected to the first actuator 140. By opening the valves within the valve box 130, the gas from the gas source 110 controls the first actuator 140 to perform a wet sweeping action or to stop the machine. It should be noted that the valve box 130 contains three or more valves, and different valves control the first actuator 140 to perform different wet sweeping actions. The pneumatic system 100 also includes a first branch 150, which is connected to the main pipeline 120 and is arranged in parallel with the valve box 130. A first valve body 151 is provided on the first branch 150, and the first valve body 151 is connected to the first actuator 140.

[0021] like Figure 1As shown, when the first actuator 140 needs to perform a wet sweeping action, the air source 110 is turned on, allowing the gas in the air source 110 to flow through the main pipeline 120 to the valve box 130. The valve in the valve box 130 that controls the first actuator 140 is opened, allowing the gas to pass through the valve and control the first actuator 140 to perform the wet sweeping action. After the wet sweeping action is completed, the valve in the valve box 130 that controls the first actuator 140 is closed, causing the first actuator 140 to stop. After the wet sweeping action is completed, some liquid will remain inside the first actuator 140, which needs to be discharged. When the first actuator 140 is stopped, the gas in the air source 110 flows through the main pipeline 120 to the first branch pipeline 150. The first valve body 151 is opened, allowing the gas to enter the first actuator 140 through the first valve body 151 and blowing the liquid out of the first actuator 140. By connecting the first branch line 150, which is in parallel with the valve box 130, to the existing main pipeline 120, the gas drives the liquid in the first actuator 140 to be discharged from the first actuator 140 through the first branch line 150. This avoids the liquid freezing in the first actuator 140 and affecting the normal use of the first actuator 140, and also avoids the problems of water leakage, damage or failure of the first actuator 140, thus improving the service life of the first actuator 140.

[0022] In some embodiments, the first valve body 151 can be a solenoid valve or a manual valve, and there is no specific limitation. When the first valve body 151 is a solenoid valve, it can be a two-position two-way solenoid directional valve.

[0023] Optionally, such as Figure 1 As shown, a one-way valve 152 is also provided on the first branch 150. The conduction direction of the one-way valve 152 is from the main branch 120 to the first valve body 151.

[0024] Specifically, a one-way valve 152 is disposed on the first branch 150 and located between the first valve body 151 and the first actuator 140. The conduction direction of the one-way valve 152 is from the main pipeline 120 to the first valve body 151, that is, the direction from the first valve body 151 towards the first actuator 140. When gas passes through the first branch 150 and drives the liquid in the first actuator 140 to be discharged from the first actuator 140, some liquid may flow towards the direction between the first valve body 151 and the main pipeline 120. The one-way valve 152 can prevent liquid from entering the main pipeline 120 and also prevent liquid from damaging other parts connected to the main pipeline 120.

[0025] Optionally, such as Figure 1As shown, the first actuator 140 includes a cylinder assembly 141 and a wet sweeping device 142. The valve box 130 is connected to the cylinder assembly 141. The cylinder assembly 141 and the wet sweeping device 142 are driven to drive the wet sweeping device 142 to perform wet sweeping action or stop.

[0026] Specifically, the first actuator 140 includes a cylinder assembly 141 and a wet sweeping device 142. It should be noted that the cylinder assembly 141 refers to a minimum of two cylinders, for example, three, four, or five or more. A valve box 130 is connected to the cylinder assembly 141, and the valve box 130 is equipped with valves corresponding to those in the cylinder assembly 141. These valves control the extension and retraction of their corresponding cylinders, allowing multiple cylinders to drive multiple components in the wet sweeping device 142 to jointly perform the wet sweeping action. Simultaneously, the cylinder assembly 141 can also stop the wet sweeping device 142.

[0027] When the wet sweeping device 142 needs to perform a wet sweeping action, the air source 110 is turned on, allowing the gas in the air source 110 to flow through the main pipeline 120 to the valve box 130. The valves in the valve box 130 corresponding to the cylinder assembly 141 are opened, allowing the gas to control the extension and retraction of multiple cylinders in the cylinder assembly 141. This causes the cylinder assembly 141 to drive the wet sweeping device 142 to perform the wet sweeping action. For example, the cylinders control the opening or closing of the water tank cover, or the extension or retraction of the cleaning spray bar. After the wet sweeping action is completed, the cylinder assembly 141 controls the wet sweeping device 142 to stop.

[0028] Optionally, such as Figure 2 As shown, the air circuit system 100 also includes a dry cleaning device 160 and a second actuator 170, which are configured to cooperate with each other. The valve box 130 is connected to the second actuator 170 to control the second actuator 170 to open and close the suction channel of the dry cleaning device 160.

[0029] Specifically, the pneumatic system 100 also includes a dry cleaning device 160 and a second actuator 170, which are drivenly connected. A valve corresponding to the second actuator 170 is provided in the valve box 130. Opening the valve in the valve box 130 allows gas to pass through, controlling the action of the second actuator 170, which in turn opens or closes the suction channel of the dry cleaning device 160.

[0030] In some embodiments, the air circuit system 100 further includes a negative pressure adsorption device connected to the dry cleaning device 160. When the second actuator 170 opens the air intake channel of the dry cleaning device 160, the negative pressure adsorption device is activated, allowing the adsorbent to enter the interior of the dry cleaning device 160 through the air intake channel. The negative pressure adsorption device is then closed, and the second actuator 170 closes the air intake channel of the dry cleaning device 160, thus completing the dry cleaning action of the dry cleaning device 160. Optionally, the valve box 130 is provided with a reversing valve, a wet sweeping control valve and a dry sweeping control valve. The air inlet of the reversing valve is connected to the main pipeline 120, the first switching port of the reversing valve is connected to the wet sweeping control valve, the second switching port of the reversing valve is connected to the dry sweeping control valve, the wet sweeping control valve is connected to the first actuator 140, and the dry sweeping control valve is connected to the second actuator 170.

[0031] Specifically, a reversing valve, a wet sweeping control valve, and a dry sweeping control valve are installed in the valve box 130. The reversing valve controls the air circuit system 100 to perform wet sweeping or dry sweeping actions. Specifically, the air inlet of the reversing valve is connected to the main pipeline 120. When a wet sweeping action is required, the first switching port of the reversing valve is connected to the wet sweeping control valve. The wet sweeping control valve is connected to the first actuator 140. The gas in the air source 110 flows through the main pipeline 120 to the air inlet of the reversing valve, and the gas flows through the first switching port to the wet sweeping control valve. The gas controls the first actuator 140 to perform the wet sweeping action. When dry cleaning is required, the second switching port of the drive reversing valve is connected to the dry cleaning control valve, which is connected to the second actuator 170. The gas in the air source 110 flows through the main pipeline 120 to the air inlet of the reversing valve, and then flows through the second switching port to the dry cleaning control valve. The gas controls the second actuator 170 to open the suction channel of the dry cleaning device 160, and then opens the negative pressure adsorption device, so that the dry cleaning device 160 performs the dry cleaning action.

[0032] In some embodiments, the reversing valve is also provided with a third switching port, through which the first actuator 140 and the second actuator 170 are stopped.

[0033] Optionally, such as Figure 2 As shown, the second actuator 170 includes a first cylinder 171 and a gate 172. The valve box 130 is connected to the first cylinder 171. The first cylinder 171 and the gate 172 are driven to drive the gate 172 to open and close the suction channel of the dry cleaning device 160.

[0034] Specifically, the second actuator 170 includes a first cylinder 171 and a gate 172, with the first cylinder 171 and gate 172 being drivenly connected. The dry cleaning control valve in the valve box 130 is connected to the first cylinder 171. When a dry cleaning action is required, gas controls the first cylinder 171 via the dry cleaning control valve, which in turn drives the gate 172 to open the suction channel of the dry cleaning device 160. When the dry cleaning action needs to be stopped, gas controls the first cylinder 171 via the dry cleaning control valve, which in turn drives the gate 172 to close the suction channel of the dry cleaning device 160. It should be noted that the first cylinder 171 can open the gate 172 either by extending or retracting; there is no specific limitation. Optionally, such as Figure 3 As shown, the gas system 100 also includes a second branch 180 connected to the main pipeline 120. The second branch 180 is arranged in parallel with the valve box 130 and the first branch 150. A second valve body 181 is provided on the second branch 180. The second valve body 181 is connected to the dry cleaning device 160. When the dry cleaning device 160 is stopped and the second valve body 181 is opened, the gas from the gas source 110 enters the main pipeline 120 through the second branch 180 and enters the dry cleaning device 160 to drive the adsorbent in the dry cleaning device 160 out.

[0035] Specifically, the gas path system 100 also includes a second branch 180, which is connected to the main pipeline 120 and is arranged in parallel with the valve box 130 and the first branch 150. A second valve body 181 is provided on the second branch 180, and the second valve body 181 is connected to the dry cleaning device 160. When the dry cleaning operation is completed and the adsorbent needs to be discharged, the dry cleaning device 160 is stopped. It should be noted that the first valve body 151 and the valve bodies in the valve box 130 are in the closed state. The gas in the gas source 110 flows to the second branch 180 through the main pipeline 120. The second valve body 181 is opened, allowing the gas to enter the dry cleaning device 160 through the second valve body 181, and the adsorbent in the dry cleaning device 160 is discharged from the outlet of the dry cleaning device 160.

[0036] In some embodiments, the second valve body 181 can be a solenoid valve or a manual valve, and there is no specific limitation. When the second valve body 181 is a solenoid valve, it can be a two-position two-way solenoid directional valve. Optionally, such as Figure 3 As shown, a gas storage tank 182 is also installed on the second branch 180, and the gas storage tank 182 is connected to the dry cleaning device 160 via the second valve body 181.

[0037] Specifically, a gas storage tank 182 connected to the dry cleaning device 160 is installed on the second branch 180. When it is necessary to discharge the adsorbent in the dry cleaning device 160, in addition to the gas provided by the gas source 110, the gas storage tank 182 also provides additional gas. The gas is released instantly after passing through the second valve body 181, quickly discharging the adsorbent in the dry cleaning device 160.

[0038] Optionally, such as Figure 3 As shown, the gas circuit system 100 also includes a pressure relief valve 190, a switch 191 and a pressure regulating filter valve 192 sequentially arranged on the main pipeline 120; the pressure relief valve 190, the switch 191 and the pressure regulating filter valve 192 are connected in series with the first branch 150, the valve box 130 and the second branch 180 respectively.

[0039] Specifically, the gas system 100 is also equipped with a pressure relief valve 190, a switch 191, and a pressure regulating filter valve 192, which are connected in series with the first branch 150, the valve box 130, and the second branch 180, respectively. When the gas pressure in the main pipeline 120 abnormally rises to a dangerous level, the pressure relief valve 190 can release excess gas into the atmosphere. The switch 191 is a manual valve that can be manually shut off or connected to the gas line, cutting off the gas source 110 during equipment maintenance, component replacement, or emergencies. The pressure regulating filter valve 192 can regulate the pressure in the pipeline and purify the gas.

[0040] In another aspect of this application, a sweeper truck is provided, including a vehicle body and the aforementioned air circuit system 100, wherein the air circuit system 100 is disposed on the vehicle body.

[0041] The sweeper truck includes an air system 100 and a vehicle body, with the air system 100 mounted on the vehicle body. A first branch line 150 is connected to the main pipeline 120, and the first branch line 150 is connected in parallel with a valve box 130. A first valve body 151 is installed on the first branch line 150, and the first valve body 151 is connected to a first actuator 140. By opening the first valve body 151, gas enters the first actuator 140 through the first valve body 151, blowing out the liquid inside the first actuator 140. By connecting the first branch line 150, which is connected in parallel with the valve box 130, to the existing main pipeline 120, the gas passes through the first branch line 150, driving the liquid inside the first actuator 140 out of the first actuator 140. This prevents the liquid from freezing inside the first actuator 140, affecting its normal operation, and also avoids problems such as water leakage, damage, or malfunction of the vehicle body, thus improving the service life of the vehicle body.

[0042] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A gas path system, characterized in that, The device includes a gas source, a main pipeline, a valve box, and a first actuator. The gas source is connected to the valve box via the main pipeline. The valve box is connected to the first actuator and controls the first actuator to perform a wet sweeping action or to stop. A first branch is connected to the valve box via the main pipeline. A first valve body is provided on the first branch. The first valve body is connected to the first actuator. When the first actuator stops and the first valve body is open, the gas from the gas source entering the main pipeline enters the first actuator via the first branch to drive the liquid in the first actuator to be discharged.

2. The gas path system as described in claim 1, characterized in that, A one-way valve is also provided on the first branch, and the one-way valve is directed from the main pipeline to the first valve body.

3. The gas path system as described in claim 1, characterized in that, The first actuator includes a cylinder assembly and a wet sweeping device. The valve box is connected to the cylinder assembly, and the cylinder assembly and the wet sweeping device are driven to drive the wet sweeping device to perform a wet sweeping action or stop.

4. The gas path system according to any one of claims 1 to 3, characterized in that, The air circuit system also includes a dry cleaning device and a second actuator, which are configured to work together. The valve box is connected to the second actuator to control the second actuator to open and close the air intake channel of the dry cleaning device.

5. The gas path system as described in claim 4, characterized in that, The valve box is equipped with a reversing valve, a wet sweeping control valve, and a dry sweeping control valve. The air inlet of the reversing valve is connected to the main pipeline. The first switching port of the reversing valve is connected to the wet sweeping control valve. The second switching port of the reversing valve is connected to the dry sweeping control valve. The wet sweeping control valve is connected to the first actuator, and the dry sweeping control valve is connected to the second actuator.

6. The gas path system as described in claim 4, characterized in that, The second actuator includes a first cylinder and a gate. The valve box is connected to the first cylinder, and the first cylinder and the gate are driven to drive the gate to open and close the suction channel of the dry sweeping device.

7. The gas path system as described in claim 4, characterized in that, The gas path system also includes a second branch connected to the main pipeline. The second branch is arranged in parallel with the valve box and the first branch. A second valve body is provided on the second branch. The second valve body is connected to the dry cleaning device. When the dry cleaning device stops and the second valve body is opened, the gas from the gas source entering the main pipeline enters the dry cleaning device through the second branch to drive the adsorbent in the dry cleaning device to be discharged.

8. The gas path system as described in claim 7, characterized in that, An air storage tank is also provided on the second branch, and the air storage tank is connected to the dry sweeping device via the second valve body.

9. The gas path system as described in claim 7, characterized in that, The gas circuit system also includes a pressure relief valve, a switch, and a pressure regulating filter valve arranged sequentially on the main pipeline; the pressure relief valve, the switch, and the pressure regulating filter valve are connected in series with the first branch, the valve box, and the second branch, respectively.

10. A sweeper truck, characterized in that, It includes a vehicle body and an air passage system as described in any one of claims 1 to 9, wherein the air passage system is disposed on the vehicle body.

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