Automatic switching system for dry and wet operation modes of sanitation vehicle

Abstract

This invention provides an automatic switching system for dry and wet operation modes of sanitation vehicles. It includes an automatic controller installed inside the vehicle compartment, an air damper position sensor located at the passage between the sweeping disc and the air damper, an air damper position sensor located at the air damper's upward position, an air damper position sensor located at the air damper's downward position, and a sliding door position sensor located on the dry / wet sliding door. These sensors are connected to the automatic controller via signal lines. Data is monitored and fed back to the automatic controller, which then switches the sanitation vehicle's dry / wet operation mode. This invention enables intelligent switching between dry and wet operation modes, protecting the dry sweeping device from damage and preventing pollution caused by the discharge of dry dust.

Description

Technical Field

[0001] This invention relates to the field of switching between dry and wet operation modes for sanitation vehicles, and more particularly to an automatic switching system for dry and wet operation modes of sanitation vehicles. Background Technology

[0002] Existing sanitation vehicles with interference modes can normally operate in wet sweeping mode during non-cold seasons. When the water tank runs out and refilling is inconvenient, they can switch to dry sweeping mode to continue operation. Opening the suction nozzle air duct at the sweeping disc can suck up the dry dust raised by the sweeping disc, achieving a dust suppression effect. At the same time, opening the wet / dry switching flip door in the garbage bin and the wet / dry switching sliding door on the top panel changes the air duct path. The dry sweeping air duct path above the garbage bin has a filter cartridge device with a cleaning function, which can effectively filter the dust in the suction to clean the exhaust air.

[0003] Patent document CN109457647A discloses a dust collection system and a sanitation vehicle. The dust collection system includes a garbage bin, a fan, and a dust collection disc. Part of the inner cavity of the garbage bin forms a garbage receiving chamber. The garbage bin is equipped with a dust collection pipe connecting the dust collection disc and the garbage receiving chamber. The garbage bin is equipped with a multi-pass chamber and a dry filter device. The multi-pass chamber has an air outlet connected to the fan, a wet air inlet connected to the garbage receiving chamber, and a filter connection port connected to the air outlet of the dry filter device. The air inlet of the dry filter device is connected to the garbage receiving chamber. A wet air inlet door is provided at the wet air inlet to open and close the wet air inlet. The garbage bin is also equipped with a partition structure that blocks the air inlet of the dry filter device and the garbage receiving chamber. The partition structure is equipped with a dry air inlet and a dry air inlet door to open and close the dry air inlet, which avoids the possibility of wet gas wetting the dry filter device. Patent document CN107841983A discloses a sanitation vehicle and its vacuuming system and dry / wet mode switching device. The dry / wet mode switching device enables garbage cleaning in both dry and wet road conditions. When the road is dry, closing the door opens the air inlet with a filter, filtering out any incompletely settled dust and other contaminants in the air. The air then passes through the outlet, enters the fan, and is subsequently discharged. When the road is wet, the sucked-up garbage becomes sludge due to the presence of moisture. After settling in the garbage bin, the air is essentially free of dust, eliminating the need for filtration. The door can be opened, and because the air resistance at the inlet with the door is much lower than that at the inlet with the filter, the airflow automatically selects to enter the multi-pass chamber through the inlet with the door, then enters the fan and is discharged. This invention achieves dry / wet mode switching through a three-way structure in the multi-pass chamber, resulting in a simple and compact structure, low cost, ease of use, and excellent energy efficiency.

[0004] Currently, sanitation vehicles with interference modes rely primarily on the driver's subjective choice when switching between dry and wet modes during non-cold seasons. This has the following drawbacks: If the air damper at the sweeping disc suction nozzle is not successfully opened, dust stirred up by dry sweeping cannot be sucked up, causing air pollution on the road surface; if the dry / wet switching door is not fully open or the sliding door is not closed, activating the wet sweeping mode will allow moisture and dust to enter the filter cartridge, causing filter blockage or damage; if the dry / wet switching door is not fully closed or the sliding door is not open, activating the dry sweeping mode will result in the actual air duct being in wet sweeping mode, causing dry dust to be discharged directly without filtration, causing air pollution. In summary, existing sanitation vehicles with dry sweeping modes lack the autonomous judgment capability to allow switching between dry and wet modes. Summary of the Invention

[0005] To address the aforementioned problems, the present invention aims to provide an automatic switching system for dry and wet operation modes of sanitation vehicles. This system monitors data through a damper position sensor, a door up-and-down position sensor, a door down-and-down position sensor, and a sliding door position sensor, and feeds this data back to an automatic controller. The automatic controller then switches the dry and wet operation modes of the sanitation vehicle, enabling intelligent switching between dry and wet modes to protect the dry sweeping device from damage and prevent the discharge of dry dust that could cause pollution.

[0006] This invention provides an automatic switching system for dry and wet operation modes of sanitation vehicles, including an automatic controller installed inside the vehicle compartment, an air damper position sensor installed at the passage from the sweeping disc to the air damper, an air damper position sensor installed at the air damper's upward position, an air damper position sensor installed at the air damper's downward position, and a sliding door position sensor installed on the dry / wet sliding door. The air damper position sensor, air damper position sensor, air damper position sensor, and sliding door position sensor are respectively connected to the automatic controller via signal lines. Data is monitored by the air damper position sensor, air damper position sensor, air damper position sensor, and sliding door position sensor and fed back to the automatic controller, which then switches the dry / wet operation mode of the sanitation vehicle.

[0007] A further improvement is that the sliding door position sensor is divided into a sliding door open position sensor and a sliding door closed position sensor, and the position of the sliding door is determined by the sliding door open position sensor and the sliding door closed position sensor.

[0008] A further improvement is that the system also includes a filter cartridge differential pressure sensor, which is used to determine the clogging status of the filter cartridge.

[0009] A further improvement is that when the sliding door closed position sensor (5) detects that the sliding door is closed, it transmits a condition signal allowing the wet sweeping mode to be opened to the automatic controller; when the sliding door open position sensor (4) detects that the sliding door is open, it transmits a condition signal allowing the dry sweeping mode to be opened to the automatic controller.

[0010] A further improvement is that when the door flip-up position sensor (2) detects that the cylinder pushes the door up to the flip-up position, the system determines that the wet sweeping channel is open and transmits a signal to the automatic controller to allow the wet sweeping mode to be turned on; when the door flip-down position sensor (3) detects that the cylinder pushes the door down to the flip-down position, the system determines that the dry sweeping channel is open and transmits a signal to the automatic controller to allow the dry sweeping mode to be turned on.

[0011] A further improvement is that when the sanitation vehicle starts the dry sweeping mode, if the damper position sensor (1) detects that the damper is in the open state, it transmits a signal to the automatic controller that allows the dry sweeping mode to be started; otherwise, it transmits a signal that prohibits the start of the dry sweeping mode. Whether the damper is open or not does not affect the normal operation of the wet sweeping mode.

[0012] A further improvement is that the filter cartridge differential pressure sensor (6) determines whether the filter cartridge is blocked by setting the air pressure difference value. The system controls the filter cartridge pulse blowing and filter cartridge vibration. When the pressure difference drops to a certain value, it is determined that the filter cartridge ventilation port has been opened. At this time, a signal allowing the dry cleaning mode to be turned on is transmitted to the automatic controller.

[0013] A further improvement is that the set pressure difference is 5 kPa.

[0014] A further improvement is that when the conditions for activating the dry sweeping mode or the conditions for activating the wet sweeping mode collected by the automatic controller coexist, it serves as a sufficient condition for the system to allow mode switching, so as to ensure that both dry and wet modes work normally and effectively.

[0015] The beneficial effects of this invention are as follows: Data is monitored by the damper position sensor, the door up-flipping position sensor, the door down-flipping position sensor, and the sliding door position sensor, and fed back to the automatic controller. The automatic controller switches the dry and wet operation modes of the sanitation vehicle, so that the sanitation vehicle can intelligently switch between dry and wet modes to protect the dry sweeping device from damage and avoid pollution caused by the discharge of dry dust, ensuring that both dry and wet modes can operate effectively. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the automatic switching system for dry and wet operation modes of sanitation vehicles according to the present invention;

[0017] Figure 2 This is a flowchart of the automatic switching system for dry and wet operation modes of sanitation vehicles according to the present invention.

[0018] Among them: 1-Air damper position sensor, 2-Flip door up position sensor, 3-Flip door down position sensor, 4-Sliding door open position sensor, 5-Sliding door closed position sensor, 6-Filter cartridge differential pressure sensor. Implementation

[0019] To enhance understanding of the present invention, the present invention will be further described in detail below with reference to embodiments. These embodiments are only used to explain the present invention and do not constitute a limitation on the scope of protection of the present invention. Example

[0020] like Figure 1 and Figure 2 As shown, this embodiment provides an automatic switching system for dry and wet operation modes of a sanitation vehicle. It includes an automatic controller installed inside the vehicle compartment, a door position sensor 1 located at the passage from the sweeping disc to the door, a door up-turning position sensor 2 located at the door up-turning position, a door down-turning position sensor 3 located at the door down-turning position, and a sliding door position sensor located on the dry / wet sliding door. The door position sensor 1, door up-turning position sensor 2, door down-turning position sensor 3, and sliding door position sensor are connected to the automatic controller via signal lines. Data is monitored by these sensors and fed back to the automatic controller, which then switches the sanitation vehicle's dry / wet operation mode. The sliding door position sensor is divided into a sliding door open position sensor 4 and a sliding door closed position sensor 5, which determine the sliding door position. The system also includes a filter cartridge differential pressure sensor 6, which determines the clogging status of the filter cartridge.

[0021] When the sliding door closed position sensor 5 detects that the sliding door is closed, it transmits a signal to the automatic controller that the wet sweeping mode is allowed to be turned on; when the sliding door open position sensor 4 detects that the sliding door is open, it transmits a signal to the automatic controller that the dry sweeping mode is allowed to be turned on.

[0022] When the door-upward position sensor 2 detects that the cylinder pushes the door up to the correct position, the system determines that the wet sweeping channel is open and transmits a signal to the automatic controller to allow the wet sweeping mode to be activated. When the door-downward position sensor 3 detects that the cylinder pushes the door down to the correct position, the system determines that the dry sweeping channel is open and transmits a signal to the automatic controller to allow the dry sweeping mode to be activated.

[0023] When the sanitation vehicle starts the dry sweeping mode, if the damper position sensor 1 detects that the damper is open, it transmits a signal to the automatic controller to allow the dry sweeping mode to be started; otherwise, it transmits a signal to prohibit the start of the dry sweeping mode. Whether the damper is open or not does not affect the normal operation of the wet sweeping mode.

[0024] The filter cartridge differential pressure sensor 6 determines whether the filter cartridge is blocked by setting a pressure difference value. The system controls the filter cartridge pulse blowing and filter cartridge vibration. When the pressure difference drops to a set value, it is determined that the filter cartridge ventilation port has been opened. At this time, a condition signal allowing the dry cleaning mode to be turned on is transmitted to the automatic controller.

[0025] The set pressure difference is 5 kPa.

[0026] When the automatic controller collects both the condition signal for activating the dry sweeping mode and the condition signal for activating the wet sweeping mode, they must coexist. This serves as a sufficient condition for the system to allow mode switching, ensuring that both dry and wet modes work normally and effectively. Example

[0027] like Figure 1 and Figure 2 As shown, this embodiment provides an automatic switching system for dry and wet operation modes of sanitation vehicles. After the driver selects the operation mode, the automatic switching system adds a self-check function to determine whether the dry and wet modes can be switched, so as to ensure the normal use of the dry and wet modes.

[0028] (1) Install a damper position sensor 1 at the passage from the sweeping disc to the damper to determine the damper posture: When the dry sweeping mode is turned on, if the system detects that the damper is in the open state, this condition is used as one of the conditions for allowing the dry sweeping mode to be turned on; otherwise, the dry sweeping mode is prohibited from starting. Whether the damper is open or not does not affect the normal operation of the wet sweeping mode.

[0029] (2) A door-upward position sensor 2 and a door-downward position sensor 3 are installed at both ends of the cylinder that controls the up and down of the wet and dry door: when the cylinder is pushed up, the door is pushed up to the position, and the system determines that the wet sweeping channel is open. This condition is one of the conditions for allowing the wet sweeping mode to be turned on. When the cylinder is pushed up, the door is pushed down to the position, and the system determines that the dry sweeping channel is open. This condition is one of the conditions for allowing the dry sweeping mode to be turned on.

[0030] (3) Install a sliding door opening position sensor 4 and a sliding door closing position sensor 5 in the area where the sliding door is open and closed: when the sliding door is closed, this condition is used as one of the conditions for allowing the wet sweeping mode to be turned on; when the sliding door is opened, this condition is used as one of the conditions for allowing the dry sweeping mode to be turned on.

[0031] (4) Set a filter cartridge differential pressure sensor 6 in the inner and outer areas of the filter cartridge. The filter cartridge is blocked by setting the air pressure difference value. At this time, the system controls the filter cartridge pulse blowing and the filter cartridge vibration. When the pressure difference drops to 5Kpa, it is determined that the filter cartridge ventilation port has been opened. This condition is one of the conditions for allowing the dry cleaning mode to be turned on.

[0032] In summary, all the above-mentioned conditions for switching between dry and wet modes must be met before switching modes can be allowed, so as to ensure that both dry and wet modes can work normally and effectively.

Claims

1. An automatic switching system for dry and wet operation modes of sanitation vehicles, characterized in that, The system includes an automatic controller installed inside the vehicle compartment, a door position sensor (1) installed at the passage from the sweeping disc to the door, a door up-turn position sensor (2) installed at the door up-turn position, a door down-turn position sensor (3) installed at the door down-turn position, and a sliding door position sensor installed on the wet and dry sliding door. The door position sensor (1), door up-turn position sensor (2), door down-turn position sensor (3), and sliding door position sensor are connected to the automatic controller via signal lines. Data is monitored by the door position sensor (1), door up-turn position sensor (2), door down-turn position sensor (3), and sliding door position sensor, and fed back to the automatic controller. The automatic controller switches the wet and dry operation modes of the sanitation vehicle. The sliding door position sensor is divided into a sliding door open position sensor (4) and a sliding door closed position sensor (5). The sliding door position is determined by the sliding door open position sensor (4) and the sliding door closed position sensor (5). When the sliding door closed position sensor (5) detects that the sliding door is closed, it transmits the signal to the automatic controller. The system provides a signal to enable the wet sweeping mode. When the sliding door opening position sensor (4) detects that the sliding door is fully open, it transmits a signal to enable the dry sweeping mode to the automatic controller. When the flip door upward position sensor (2) detects that the cylinder pushes the flip door upward, the system determines that the wet sweeping channel is open and transmits a signal to enable the wet sweeping mode to the automatic controller. When the flip door downward position sensor (3) detects that the cylinder pushes the flip door downward, the system determines that the dry sweeping channel is open and transmits a signal to enable the dry sweeping mode to the automatic controller. When the sanitation vehicle starts the dry sweeping mode, if the damper position sensor (1) detects that the damper is open, it transmits a signal to enable the dry sweeping mode to the automatic controller. Otherwise, it transmits a signal to prohibit the start of the dry sweeping mode. Whether the damper is open or not does not affect the normal operation of the wet sweeping mode. When all the signals to enable the dry sweeping mode or the signals to enable the wet sweeping mode collected by the automatic controller coexist, it serves as a sufficient condition for the system to allow mode switching, so as to ensure that both the wet and dry modes work normally and effectively.

2. The automatic switching system for dry and wet operation modes of sanitation vehicles according to claim 1, characterized in that, The system also includes a filter cartridge differential pressure sensor (6), which is used to determine the clogging status of the filter cartridge.

3. The automatic switching system for dry and wet operation modes of sanitation vehicles according to claim 2, characterized in that, The filter cartridge differential pressure sensor (6) determines whether the filter cartridge is blocked by setting the air pressure difference value. The system controls the filter cartridge pulse blowing and filter cartridge vibration. When the pressure difference drops to a set value, it is determined that the filter cartridge ventilation port has been opened. At this time, a condition signal for allowing the dry cleaning mode to be opened is transmitted to the automatic controller.

4. The automatic switching system for dry and wet operation modes of sanitation vehicles according to claim 3, characterized in that, The set pressure difference is 5 kPa.

Images