A water spraying sweeper with dynamic adjustment function of water storage and sewage storage space and a control method

Abstract

This invention relates to the field of water-sprinkler sweeper technology, and discloses a water-sprinkler sweeper with dynamic adjustment function of water and sewage storage space and its control method. It aims to solve the technical problem that existing water-sprinkler sweepers typically have fixed-volume clean water tanks and sewage tanks, causing vehicles to frequently interrupt operations to return for water or sewage replenishment, severely limiting the continuous working capacity of a single trip. This invention includes a vehicle body, a walking mechanism located below the vehicle body, and a sweeping assembly, a water-sprinkling assembly, a clean water tank, and a sewage tank located above the vehicle body. A movable separator is provided between the clean water tank and the sewage tank, and the separator is connected to an adjustment drive mechanism that drives its movement to change the volume ratio of the clean water tank and the sewage tank. This invention fully utilizes the total volume of the integrated tank body, avoiding forced operation interruptions due to one side of the tank filling or emptying first, significantly extending the effective sweeping mileage and time after a single filling and emptying, and improving operational efficiency.

Description

Technical Field

[0001] This invention relates to the field of water-sprinkler sweeper technology, and in particular to a water-sprinkler sweeper with dynamic adjustment function of water and sewage storage space and control method. Background Technology

[0002] A water-spraying sweeper is a sanitation vehicle that integrates functions such as road cleaning, garbage collection, and dust suppression. It is widely used for daily cleaning and maintenance of urban roads, squares, airports, and industrial areas.

[0003] Currently, common water-sprinkler trucks are typically equipped with a clean water tank and a wastewater tank. The clean water tank stores the clean water needed for sweeping operations, while the wastewater tank collects wastewater and solid waste generated after washing the road surface. In traditional structures, the clean water tank and wastewater tank are usually two independent chambers or separated by a fixed partition within a single integrated tank. The volume ratio between the two is determined during vehicle design and manufacturing and cannot be changed during use.

[0004] Chinese patent document CN204325998U discloses a water-sprinkling sweeper, including a vehicle body, a push frame at the rear of the vehicle body, and wheels at the bottom. A water tank is located at the front of the push frame on the vehicle body. The water tank is divided into a front clean water tank and a rear mop washing water tank by a longitudinally arranged partition. A mop water control plate is horizontally arranged above the water surface in the mop washing water tank. A water outlet and a drain valve are installed at the bottom of the mop washing water tank. A mop placement rack is fixed to the vehicle body at the lower front of the vehicle body. A water spray pipe is horizontally arranged at the front of the mop placement rack. The water spray pipe is connected to the drain valve located at the bottom of the front side plate of the clean water tank through a water pipe.

[0005] However, the above solutions have at least the following technical problems during implementation: 1. The fixed volume of the clean water tank and the wastewater tank makes it impossible to adapt to the dynamic changes in volume requirements during operation. Existing water-spraying sweepers are usually equipped with clean water tanks and wastewater tanks of fixed volume. During operation, it often happens that one side of the wastewater tank is full, making it impossible to continue collecting waste, while the other side of the clean water tank still has a lot of water, or vice versa. This forces the vehicle to frequently interrupt operation to return to add water or drain wastewater, severely limiting the continuous operation capacity of a single trip. 2. The hydraulic sweeping operation parameters are set too roughly and cannot be adaptively adjusted according to the real-time dirt and dirt conditions of the road surface, resulting in water waste or incomplete cleaning. The high-pressure nozzles of existing sweepers usually operate with preset fixed flow rates and spray patterns, and cannot be adjusted according to the actual conditions such as the type of road debris, the thickness of the accumulation, and the humidity. This often leads to excessive water spraying on lightly polluted roads, resulting in waste, while the cleaning power is insufficient for heavily polluted roads. 3. There is a lack of effective early warning and protection mechanisms for the extreme conditions of the water tank level. When the clean water tank level is too low, the high-pressure pump may run dry and be damaged; when the wastewater tank level is too high, wastewater may overflow and cause secondary pollution to the road surface. Existing equipment fails to provide timely and effective alarm prompts and automatic protection for these extreme conditions. Therefore, there is an urgent need to propose a water-spraying sweeper with dynamic adjustment functions for water and wastewater storage space, and a corresponding control method. Summary of the Invention

[0006] In view of the above technical problems, this disclosure provides a water-sprinkling sweeper with dynamic adjustment function of water and sewage storage space and control method, which solves the technical problem that water-sprinkling sweepers in the prior art are usually equipped with fixed volume water tank and sewage tank, which causes the vehicle to frequently interrupt operation to return to add water or discharge sewage, which seriously limits the continuous operation capability of a single trip.

[0007] According to one aspect of this disclosure, a water-spraying sweeper and its control method are provided, which have a dynamic adjustment function for water storage and sewage storage space. The sweeper includes a vehicle body, a walking mechanism is provided below the vehicle body, and a sweeping component, a water-spraying component, a clean water tank and a sewage tank are provided above the vehicle body. A movable partition is provided between the clean water tank and the sewage tank. The partition is connected to an adjustment drive mechanism that drives it to move to change the volume ratio of the clean water tank and the sewage tank. The clean water tank is equipped with a first liquid level sensor for detecting the liquid level, and the wastewater tank is equipped with a second liquid level sensor for detecting the liquid level. The first liquid level sensor, the second liquid level sensor, and the adjustment drive mechanism are electrically connected to the control unit. The control unit controls the adjustment drive mechanism to move the separating component to the side of the tank with more remaining space based on the liquid level information detected by the first liquid level sensor and the second liquid level sensor, thereby dynamically increasing the effective volume of the side with insufficient water storage and decreasing the effective volume of the side with abundant water storage.

[0008] In some embodiments of this disclosure, the cleaning assembly includes a high-pressure nozzle group and a slurry recovery port. The high-pressure nozzle group sprays water toward the ground, entraining ground debris to form a slurry mixture. The slurry recovery port draws the slurry mixture into the wastewater tank through a recovery pipeline. The intensity of the hydraulic cleaning of the ground is controlled by adjusting the flow rate of the water carried by the high-pressure nozzle group.

[0009] In some embodiments of this disclosure, an image acquisition and analysis module is also included, which is used to identify the type of garbage, the thickness of the accumulation and the moisture content of the road surface based on the acquired road surface images, and adjust the injection flow rate of the high-pressure nozzle assembly and the negative pressure intensity of the slurry recovery port accordingly.

[0010] In some embodiments of this disclosure, the clean water tank and the wastewater tank are constructed from the same integral housing, and the separating component is a sliding partition installed inside the integral housing, which divides the internal space of the integral housing into a clean water chamber and a wastewater chamber.

[0011] In some embodiments of this disclosure, the inner wall of the integral box is provided with a guide rail extending along the moving direction of the sliding partition, the edge of the sliding partition slides in cooperation with the guide rail, and a sealing element is provided between the edge of the sliding partition and the inner wall of the integral box.

[0012] In some embodiments of this disclosure, the adjustment drive mechanism is an electric push rod, with the fixed end of the electric push rod connected to the housing and the movable end connected to the sliding partition.

[0013] In some embodiments of this disclosure, an alarm is also included, and the control unit is further configured to control the alarm to issue an alarm signal when the level in the clean water tank is below the minimum limit or the level in the wastewater tank is above the maximum limit.

[0014] A method for dynamic adjustment and sweeping control of a water-sprinkling sweeper includes the following steps: S1: Dual liquid level detection, the first liquid level of the clean water tank is collected in real time by the first liquid level sensor installed in the clean water tank, and the second liquid level of the wastewater tank is collected in real time by the second liquid level sensor installed in the wastewater tank, and the first liquid level and the second liquid level are sent to the control unit; S2: Dynamic adjustment of the separating component. Based on the first liquid level and the second liquid level in S1, the separating component is controlled to move towards the side of the tank with more remaining space, so as to dynamically increase the effective volume of the side with insufficient water storage and decrease the effective volume of the side with excess water storage; and the alarm reminds the staff to add water to the clean water tank or drain the sewage tank. S3: Road surface image acquisition, which uses an image acquisition device installed on the vehicle body to acquire original images of the road surface in front of the vehicle in real time and transmits the original images to the image acquisition and analysis module; S4: Image recognition and analysis. The image acquisition and analysis module preprocesses the original image from S3, extracts image features, and inputs the extracted features into a pre-trained classification and recognition model. The classification and recognition model outputs recognition results, which include the type of garbage on the road, the estimated accumulation thickness, and the humidity level of the road surface. S5: Adaptive adjustment of cleaning parameters. The control unit receives the identification result in S4 and determines the cleaning parameters according to the preset cleaning strategy rules; it generates adjustment instructions to increase or decrease the total flow rate of the high-pressure nozzle group and / or increase the negative pressure target value of the slurry recovery port; the control unit sends the adjustment instructions to the corresponding actuator. S6: Hydraulic sweeping and slurry recovery. The high-pressure nozzle assembly adjusts the nozzle opening and closing combination according to the received adjustment command, and sprays high-pressure water onto the ground with the adjusted jet flow rate. The impact force of the water flow breaks up the ground debris and entrains it to form a slurry mixture. The slurry recovery port adjusts the speed of the recovery fan according to the received adjustment command, and sucks in the slurry mixture formed on the ground along with some air with the adjusted negative pressure intensity. The mixture is then transported to the sewage tank through the recovery pipeline to complete the sweeping operation.

[0015] The beneficial effects of this invention are as follows: This design enhances the continuous operation capability of a single cleaning vehicle and significantly reduces the number of refill and drainage trips. By installing a movable partition between the clean water tank and the wastewater tank, and using dual level sensors for real-time monitoring, the control unit can dynamically determine the excess or insufficient water on both sides. It then drives the partition to move towards the side with more space, thereby increasing the effective volume of the side with insufficient water. This fully utilizes the total volume of the integrated tank, avoiding forced interruptions due to one side of the tank filling or emptying first. It significantly extends the effective cleaning mileage and time after each filling and emptying, improving operational efficiency.

[0016] This system enables precise, on-demand cleaning, conserving water resources and improving cleaning quality. Utilizing an image acquisition and analysis module, it identifies the road surface ahead, proactively determining the type of debris, its thickness, and road surface moisture. This allows for adaptive adjustments to the spray flow rate of the high-pressure nozzles and the negative pressure intensity at the slurry recovery port. For stubborn, heavy debris, the water flow is increased and suction is enhanced; for lighter, dry debris, the water pressure and suction are reduced accordingly. This differentiated approach avoids the waste of excessive water usage, conserving water while ensuring thorough cleaning for various road conditions.

[0017] The sweeping structure is well-designed, providing excellent cleaning results and preventing secondary dust generation. High-pressure nozzles spray water to engulf ground debris, creating a slurry mixture, which is then directly sucked into a wastewater tank through a slurry recovery port. This wet hydraulic sweeping method, combined with negative pressure recovery, effectively suppresses the dust problems easily generated by traditional brush sweeping, while also ensuring more thorough slurry recovery and superior road surface cleaning.

[0018] With a high degree of intelligence, it reduces reliance on human experience. The entire space allocation and cleaning parameter adjustment are completed automatically. The control unit receives sensor and image analysis results and issues instructions in real time, eliminating the need for drivers to frequently operate manually based on visual road conditions. This reduces labor intensity and ensures the consistency and stability of cleaning results.

[0019] It features extreme condition warning and protection to enhance equipment safety. By installing an alarm, a timely alarm signal is issued when the clean water tank level is below the minimum limit or the wastewater tank level is above the maximum limit, effectively preventing water pump damage from dry running or wastewater overflow and pollution of the road surface, thus ensuring equipment and operational safety. Attached Figure Description

[0020] Figure 1 A schematic diagram of a water-sprinkler sweeper with dynamic adjustment function for water and waste storage space; Figure 2 Another structural diagram of a water-sprinkler sweeper with dynamic adjustment function for water and waste storage space; Figure 3 A bottom view of a water-sprinkler sweeper with dynamic adjustment of water and waste storage space; The components shown in the diagram are as follows: 1. Vehicle body; 2. Walking mechanism; 3. Sweeping assembly; 4. Clean water tank; 5. Waste water tank; 6. Separator; 7. Image acquisition and analysis module; 8. High-pressure nozzle assembly. Detailed Implementation

[0021] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention. Example 1

[0022] This example discloses a water-sprinkling sweeper with dynamic adjustment function of water and sewage storage space and its control method. See [link to relevant documentation]. Figures 1 to 3 The vehicle includes a vehicle body 1, a walking mechanism 2 is provided below the vehicle body 1, and a sweeping component 3, a water spraying component, a clean water tank 4 and a wastewater tank 5 are provided above the vehicle body. A movable partition 6 is provided between the clean water tank 4 and the wastewater tank 5. The partition is connected to an adjustment drive mechanism that drives it to move to change the volume ratio of the clean water tank and the wastewater tank. A first liquid level sensor for detecting the liquid level is installed in the clean water tank 4, and a second liquid level sensor for detecting the liquid level is installed in the sewage tank 5. The first liquid level sensor, the second liquid level sensor and the adjustment drive mechanism are electrically connected to the control unit. The control unit controls the adjustment drive mechanism to move the partition component to the side of the tank with more remaining space based on the liquid level information detected by the first liquid level sensor and the second liquid level sensor, thereby dynamically increasing the effective volume of the side with insufficient water storage and decreasing the effective volume of the side with abundant water storage.

[0023] The cleaning assembly includes a high-pressure nozzle group 8 and a slurry recovery port. The high-pressure nozzle group 8 sprays water towards the ground, entraining the ground debris to form a slurry mixture. The slurry recovery port sucks the slurry mixture into the sewage tank through a recovery pipeline. The water flow rate of the high-pressure nozzle group is adjusted to control the intensity of the water cleaning on the ground.

[0024] It also includes an image acquisition and analysis module 7, which is used to identify the type of garbage, the thickness of the accumulation and the moisture of the road surface based on the acquired road surface images, and adjust the spray flow rate of the high-pressure nozzle group and the negative pressure intensity of the slurry recovery port accordingly.

[0025] The clean water tank 4 and the wastewater tank 5 are composed of the same integral tank. The dividing component is a sliding partition installed inside the integral tank, which divides the internal space of the integral tank into a clean water chamber and a wastewater chamber.

[0026] The inner wall of the integral box is provided with a guide rail extending along the moving direction of the sliding partition. The edge of the sliding partition slides in cooperation with the guide rail, and a seal is provided between the edge of the sliding partition and the inner wall of the integral box.

[0027] The adjustment drive mechanism is an electric push rod, with the fixed end of the electric push rod connected to the housing and the movable end connected to the sliding partition.

[0028] It also includes an alarm, and the control unit is also used to control the alarm to issue an alarm signal when the liquid level in the clean water tank is lower than the minimum limit or the liquid level in the wastewater tank is higher than the maximum limit.

[0029] A method for dynamic adjustment and sweeping control of a water-sprinkling sweeper includes the following steps: S1: Dual liquid level detection, the first liquid level of the clean water tank is collected in real time by the first liquid level sensor installed in the clean water tank, and the second liquid level of the wastewater tank is collected in real time by the second liquid level sensor installed in the wastewater tank, and the first liquid level and the second liquid level are sent to the control unit; S2: Dynamic adjustment of the partition component. Based on the first and second liquid levels in S1, the partition component is controlled to move towards the side of the tank with more remaining space, so as to dynamically increase the effective volume of the side with insufficient water storage and decrease the effective volume of the side with excessive water storage; and the alarm will remind the staff to add water to the clean water tank or drain the sewage tank. S3: Road surface image acquisition, which uses an image acquisition device installed on the vehicle to acquire raw images of the road surface in front of the vehicle in real time and transmits the raw images to the image acquisition and analysis module; S4: Image recognition and analysis. The image acquisition and analysis module preprocesses the original image in S3, extracts image features, and inputs the extracted features into a pre-trained classification and recognition model. The classification and recognition model outputs recognition results, including the type of garbage on the road, the estimated accumulation thickness, and the moisture level of the road surface. S5: Adaptive adjustment of cleaning parameters. The control unit receives the identification results in S4 and determines the cleaning parameters according to the preset cleaning strategy rules; it generates adjustment instructions to increase or decrease the total flow rate of the high-pressure nozzle group and / or increase the negative pressure target value of the slurry recovery port; the control unit sends the adjustment instructions to the corresponding actuator. S6: Hydraulic sweeping and slurry recovery. The high-pressure nozzle assembly adjusts the nozzle opening and closing combination according to the received adjustment command, and sprays high-pressure water jets onto the ground with the adjusted jet flow rate. The impact force of the water jet breaks up the ground debris and carries it into a slurry mixture. The slurry recovery port adjusts the speed of the recovery fan according to the received adjustment command, and draws in the slurry mixture formed on the ground along with some air with the adjusted negative pressure intensity. The mixture is then transported to the sewage tank through the recovery pipeline to complete the sweeping operation.

[0030] Although some preferred embodiments of the invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the invention.

[0031] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this application and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A water-sprinkling sweeper with dynamic adjustment function of water and sewage storage space, characterized in that: The vehicle includes a vehicle body, a walking mechanism is provided under the vehicle body, and a sweeping component, a water spraying component, a clean water tank and a wastewater tank are provided on the top of the vehicle body. A movable partition is provided between the clean water tank and the wastewater tank. The partition is connected to an adjustment drive mechanism that drives its movement to change the volume ratio of the clean water tank and the wastewater tank. The clean water tank is equipped with a first liquid level sensor for detecting the liquid level, and the wastewater tank is equipped with a second liquid level sensor for detecting the liquid level. The first liquid level sensor, the second liquid level sensor, and the adjustment drive mechanism are electrically connected to the control unit. The control unit controls the adjustment drive mechanism to move the separating component to the side of the tank with more remaining space based on the liquid level information detected by the first liquid level sensor and the second liquid level sensor, thereby dynamically increasing the effective volume of the side with insufficient water storage and decreasing the effective volume of the side with abundant water storage.

2. The water-sprinkler sweeper with dynamic adjustment function of water and sewage storage space as described in claim 1, characterized in that: The cleaning assembly includes a high-pressure nozzle group and a slurry recovery port. The high-pressure nozzle group sprays water towards the ground, entraining the ground debris to form a slurry mixture. The slurry recovery port draws the slurry mixture into the wastewater tank through a recovery pipeline. The intensity of the hydraulic cleaning of the ground is controlled by adjusting the flow rate of the water carried by the high-pressure nozzle group.

3. The water-sprinkler sweeper with dynamic adjustment function of water and sewage storage space as described in claim 2, characterized in that: It also includes an image acquisition and analysis module, which is used to identify the type of garbage, the thickness of the accumulation, and the moisture content of the road surface based on the acquired road surface images, and adjust the spray flow rate of the high-pressure nozzle group and the negative pressure intensity of the slurry recovery port accordingly.

4. The water-sprinkler sweeper with dynamic adjustment function of water and sewage storage space as described in claim 1, characterized in that: The clean water tank and the wastewater tank are constructed from the same integral housing. The dividing component is a sliding partition installed inside the integral housing, which divides the internal space of the integral housing into a clean water chamber and a wastewater chamber.

5. The water-sprinkler sweeper with dynamic adjustment function of water and sewage storage space as described in claim 4, characterized in that: The inner wall of the integral box is provided with a guide rail extending along the moving direction of the sliding partition. The edge of the sliding partition slides in cooperation with the guide rail, and a sealing element is provided between the edge of the sliding partition and the inner wall of the integral box.

6. The water-sprinkler sweeper with dynamic adjustment function of water storage and sewage storage space as described in claim 5, characterized in that: The adjustment drive mechanism is an electric push rod, with its fixed end connected to the housing and its movable end connected to the sliding partition.

7. The water-sprinkler sweeper with dynamic adjustment function of water storage and sewage storage space as described in claim 1, characterized in that: It also includes an alarm, and the control unit is also used to control the alarm to issue an alarm signal when the liquid level in the clean water tank is lower than the minimum limit or the liquid level in the wastewater tank is higher than the maximum limit.

8. A dynamic adjustment and cleaning control method for a water-sprinkling sweeper, applicable to any one of claims 1 to 7, wherein the water-sprinkling sweeper has a dynamic adjustment function for water storage and waste storage space, characterized in that... Includes the following steps: S1: Dual liquid level detection, the first liquid level of the clean water tank is collected in real time by the first liquid level sensor installed in the clean water tank, and the second liquid level of the wastewater tank is collected in real time by the second liquid level sensor installed in the wastewater tank, and the first liquid level and the second liquid level are sent to the control unit; S2: Dynamic adjustment of the separating component. Based on the first liquid level and the second liquid level in S1, the separating component is controlled to move towards the side of the tank with more remaining space, so as to dynamically increase the effective volume of the side with insufficient water storage and decrease the effective volume of the side with excess water storage; and the alarm reminds the staff to add water to the clean water tank or drain the sewage tank. S3: Road surface image acquisition, which uses an image acquisition device installed on the vehicle body to acquire original images of the road surface in front of the vehicle in real time and transmits the original images to the image acquisition and analysis module; S4: Image recognition and analysis. The image acquisition and analysis module preprocesses the original image from S3, extracts image features, and inputs the extracted features into a pre-trained classification and recognition model. The classification and recognition model outputs recognition results, which include the type of garbage on the road, the estimated accumulation thickness, and the humidity level of the road surface. S5: Adaptive adjustment of cleaning parameters. The control unit receives the identification result in S4 and determines the cleaning parameters according to the preset cleaning strategy rules; it generates adjustment instructions to increase or decrease the total flow rate of the high-pressure nozzle group and / or increase the negative pressure target value of the slurry recovery port; the control unit sends the adjustment instructions to the corresponding actuator. S6: Hydraulic sweeping and slurry recovery. The high-pressure nozzle assembly adjusts the nozzle opening and closing combination according to the received adjustment command, and sprays high-pressure water onto the ground with the adjusted jet flow rate. The impact force of the water flow breaks up the ground debris and entrains it to form a slurry mixture. The slurry recovery port adjusts the speed of the recovery fan according to the received adjustment command, and sucks in the slurry mixture formed on the ground along with some air with the adjusted negative pressure intensity. The mixture is then transported to the sewage tank through the recovery pipeline to complete the sweeping operation.

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