CN212103814U - Motor sweeper and water tank system thereof - Google Patents

Abstract

The utility model relates to a motor sweeper and water tank system thereof, this water tank system include water pump, storage water tank, lower water tank, controller and water level detection device, lower water tank sets up the bottom of storage water tank, and with the bottom intercommunication of storage water tank, lower water tank's bottom is formed with the intake, the intake with the water inlet of water pump links to each other, lower water tank's volume is far less than the volume of storage water tank, detection device is used for detecting the volume information in the storage water tank and feedback the volume information, the water pump basis the volume information opens and stops. This water tank system can improve the utilization ratio of water under the prerequisite of avoiding water pump cavitation through setting up down the water tank to practice thrift whole car energy consumption.

Description

Motor sweeper and water tank system thereof

Technical Field

The disclosure relates to the field of garbage cleaning, in particular to a sweeper and a water tank system thereof.

Background

The sweeper is one of important devices of environmental sanitation road sweeping equipment, and is efficient sweeping equipment integrating road surface washing, road surface sweeping, garbage recycling and transportation. Need use a large amount of clear water to carry out the dust fall and wash ground in the road sweeping process, in order furthest's promotion motor sweeper's activity duration, two storage tanks around generally setting up realize the maximize of adorning water.

Among the prior art, the intake when the motor sweeper operation sets up the bottom at the storage water tank usually, the clear water through high pressure water pump system extraction storage water tank in carries out the dust removal operation, at the extraction in-process, intake department can produce the swirl, when the water level is lower, the air can be followed in the swirl center gets into the water pump, cause water pump cavitation easily, usually for avoiding water pump cavitation, can set up the low water level alarm usually on the inner wall of storage water tank, after the water level reduces to a certain extent, the low water level alarm sends the warning, stop the operation of drawing water this moment. However, this solution does not make full use of the remaining water in the storage tank (generally 300L-500L of water cannot be used up), reduces the working time, and transports this remaining water back and forth increases the energy consumption of the sweeper.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a motor sweeper and water tank system thereof, this water tank system can improve the utilization ratio of water under the prerequisite of avoiding water pump cavitation to practice thrift whole car energy consumption.

In order to achieve the purpose, the present disclosure provides a water tank system of a sweeper, the water tank system includes a water pump, a water storage tank, a lower water tank and a water level detection device, the lower water tank is disposed at the bottom of the water storage tank and communicated with the bottom of the water storage tank, a water intake is formed at the bottom of the lower water tank and connected with a water inlet of the water pump, the volume of the lower water tank is far smaller than that of the water storage tank, the detection device is used for detecting water volume information in the water storage tank and feeding back the water volume information, and the water pump is started or stopped according to the water volume information.

Optionally, the ratio of the volume of the lower tank to the volume of the storage tank is less than 1: 120.

Optionally, the water tank system further comprises a controller, the detection device is a water level detection device, the water level detection device is arranged at the top of the inner cavity of the lower water tank and used for detecting water level information in the water storage tank and feeding the water level information back to the controller, and the controller is used for controlling the start and stop of the water pump according to the water level information; or, the water tank system further comprises a controller, the detection device is a flow meter, the flow meter is arranged at the water intake of the lower water tank and used for detecting water quantity information passing through the water intake, and the controller is used for controlling the water pump to start and stop according to the water quantity information.

Optionally, the water storage tank comprises a first water storage tank and a second water storage tank, bottom plates of the first water storage tank and the second water storage tank are both mounted on the frame and located on the same horizontal plane, the lower water tank is arranged at the bottom of the second water storage tank, and the lower water tank is communicated with the first water storage tank through a first communicating pipe.

Optionally, the water tank system further comprises a plurality of second communicating pipes, one end of each second communicating pipe is connected with the bottom plate of the first water storage tank, and the other end of each second communicating pipe is connected with the bottom plate of the second water storage tank so as to communicate the first water storage tank with the second water storage tank.

Optionally, the maximum height of the internal chamber of the second storage tank is less than the maximum height of the internal chamber of the first storage tank.

Optionally, the first water storage tank comprises a first water injection connector and an overflow pipe, the first water injection connector is arranged on a top plate of the first water storage tank, the overflow pipe is arranged inside the first water storage tank, the lower end of the overflow pipe is fixed on a bottom plate of the first water storage tank and communicated with the outside, and the upper end of the overflow pipe extends upwards to be close to the top plate of the first water storage tank along the vertical direction and is formed with an opening inclined relative to the extension axis.

Optionally, a second water injection joint and a vent pipe are arranged on the second water storage tank, the second water injection joint is formed into a hook shape and comprises an inlet end, an outlet end and a middle section, the inlet end and a top plate of the second water storage tank are located on the same horizontal plane, the outlet end is connected with a side wall of the second water storage tank, the middle section is bent upwards from the inlet end and folded back to the outlet end, the lower end of the vent pipe is connected with the middle section, and the upper end of the vent pipe extends upwards to be located on the same horizontal plane with the top plate of the first water storage tank.

Another aspect of the present disclosure also provides a sweeper truck including a sweeping system and a water tank system of the sweeper truck as described above.

Optionally, the water tank system includes a plurality of storage water tanks, the cleaning system includes fan, dustbin, suction nozzle, the dustbin is installed the top of one of them storage water tank of a plurality of storage water tanks, the inlet scoop of fan links to each other with the dustbin, the suction nozzle sets up the rear of dustbin, the fan is used for making the dustbin produce and can make the suction nozzle adsorbs the negative pressure of foreign matter.

Through above-mentioned technical scheme, the motor sweeper is when washing the operation, and the water in the storage water tank is extracted by the water pump through lower water tank, detects the water yield in the storage water tank through detection device, guarantees that lower water tank is full water state at whole pumping in-process, can prevent effectively that the aquatic products in the lower water tank from producing the swirl, avoids the bubble to get into the water pump and produces the cavitation. And, the volume of lower water tank is far less than the volume of storage water tank, under the prerequisite of guaranteeing that the water pump does not receive cavitation, can use up the water in the storage water tank completely, only remain the water in the lower water tank, like this, can promote the utilization ratio of clear water, increase simultaneously and spray operation time and scope, after the washing operation is accomplished, the motor sweeper only need carry the water conversion place that remains in the lower water tank, the carrying load is little, can to a great extent practice thrift the energy consumption of motor sweeper, improve the duration of motor sweeper.

Additional features and advantages of the disclosure will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:

FIG. 1 is a schematic block diagram of a water tank system in one embodiment of the present disclosure;

FIG. 2 is an enlarged view of a portion of area A of FIG. 1, showing structural features of an opening in the upper end of the overflow tube in one embodiment;

FIG. 3 is an enlarged view of a portion of area A of FIG. 1 showing structural features of an opening in the upper end of the overflow tube in another embodiment;

FIG. 4 is an enlarged partial view of region B of FIG. 1;

fig. 5 is a schematic top view of a water tank system according to an embodiment of the present disclosure, in which a position relationship between a lower water tank and a communication pipe is shown in a perspective view;

FIG. 6 is a side view of a cistern system in one embodiment of the present disclosure.

Description of the reference numerals

1 first storage tank 11 first water injection joint 12 overflow pipe

121 opening 2 second water storage tank 21 second water injection joint

211 inlet end 212 and outlet end 213 middle section

Water intake 31 of water tank under 22 ventilating pipe 3

4 water level detecting device 51 first communicating pipe 52 second communicating pipe

6 access hole 7 dustbin 71 suction nozzle

Height difference of Δ H

Detailed Description

The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.

In the present disclosure, unless otherwise specified, the use of directional words such as "front and rear" generally means forward toward the vehicle head and rearward toward the vehicle tail; "upper, lower, top, bottom" are orientations or positional relationships that structural members are conventionally placed when in use, upper and lower being understood as upper and lower along the direction of gravity, "top" being above and "bottom" being below the respective structural member; "inner and outer" refer to the inner and outer contours of the respective structural members. In addition, it is to be understood that the terms "first," "second," and the like are used for distinguishing one element from another, and are not necessarily order nor importance. In addition, in the description with reference to the drawings, the same reference numerals in different drawings denote the same elements.

The embodiment of the present disclosure provides a water tank system of a sweeper, as shown in fig. 1 to 6, the water tank system includes a water pump (not shown in the figure), a water storage tank, a lower water tank 3, and a detection device 4, the lower water tank 3 is disposed at the bottom of the water storage tank and is communicated with the bottom of the water storage tank, a water intake 31 is formed at the bottom of the lower water tank 3, the water intake 31 is connected with a water inlet of the water pump, the volume of the lower water tank 3 is far smaller than that of the water storage tank, the water pump is mounted on a vehicle frame, and the mounting height of the water pump is lower than that of the water intake 31, the detection device 4 is used for detecting water volume information in the water storage tank and feeding back. Wherein, the volume of the lower water tank 3 is far smaller than that of the water storage tank, which means that the volume of the lower water tank 3 is smaller than one percent of that of the water storage tank.

When the sweeper disclosed by the invention is used for washing a road surface, the water pump takes clean water in the water storage tank from the water intake 31 of the lower water tank 3 and pumps the clean water to the spraying opening of the sweeper through the pipeline so as to spray water flow to the road surface. In the operation process, the water quantity in the water storage tank can be continuously reduced, and when the detection device 4 detects that the water quantity in the water storage tank is remained, the water pump continues to operate to take water; in order to avoid cavitation of the water pump, when the detection device 4 detects that the water quantity in the water storage tank is just used up and the water quantity in the lower water tank 3 is still left, the water pump stops running to take water.

Here, the present disclosure may use any type of water level detection device 4, such as an electro-optical level meter, an ultrasonic level meter, and the like, and the present disclosure is not limited thereto.

Through above-mentioned technical scheme, the motor sweeper is when washing the operation, and the water in the storage water tank is extracted by the water pump through lower water tank 3, detects the water yield in the storage water tank through detection device 4, guarantees that lower water tank 3 is full water state at whole pumping process, can prevent effectively that the aquatic products in lower water tank 3 from producing the swirl, avoids the bubble to get into the water pump and produces the cavitation. And, the volume of lower header 3 is far less than the volume of storage water tank, under the prerequisite of guaranteeing that the water pump does not receive cavitation erosion, can use up the water in the storage water tank completely, only remain the water in lower header 3, like this, can promote the utilization ratio of clear water, increase simultaneously and spray operation time and scope, after the washing operation is accomplished, the motor sweeper only need carry the water conversion place that remains in lower header 3, the carrying load is little, can to a great extent save the energy consumption of motor sweeper, improve the duration of motor sweeper.

The specific structure of the water tank system in the embodiment of the present disclosure will be described in detail below with reference to fig. 1 to 6, and the features mentioned below can be arbitrarily combined without conflict, and the present disclosure is not limited thereto.

In order to improve the utilization rate of the clean water and reduce the energy consumption of the sweeper, the volume of the lower water tank 3 is far smaller than that of the water storage tank, for example, the ratio of the volume of the lower water tank 3 to the volume of the water storage tank is smaller than 1:120, and the water tank system in the ratio range can obviously improve the utilization rate of the clean water and the spraying operation time and range, and simultaneously save the energy consumption of the whole sweeper. Preferably, the ratio of the volume of the lower water tank 3 to the volume of the water storage tank can be less than 1:320, the water tank system in the ratio range can improve the high water utilization rate and the spraying operation time and range to a great extent, and meanwhile, the cruising ability of the whole vehicle is obviously improved.

Further, in the present disclosure, the volume of the lower water tank 3 may range from 20 liters to 50 liters, for example, the volume of the lower water tank 3 may be set to 25 liters, 35 liters, etc., and the volume of the water storage tank may be different for different models of sweeper trucks, but the volume range of the lower water tank 3 may be maintained in the above range for different volumes of water storage tanks, for example, the lower water tank 3 with the volume of 25 liters may be set for different volumes of water storage tanks, which is not limited by the present disclosure.

In the present disclosure, the detection device 4 may be various types of detection devices as long as the amount of water in the water storage tank can be known, and the present disclosure does not limit this. Here, as an example of the present disclosure, as shown in fig. 1, the sensing device 4 may be a water level sensing device disposed at the top of the inner cavity of the lower water tank 3 for sensing water level information in the water storage tank.

After the water level detection device detects the water level information in the water storage tank, the water pump can be started and stopped according to the water level information. For example, the water tank system of the present disclosure may further include a controller (not shown) that is in signal connection with both the water level detection device and the water pump.

Specifically, when the sweeper disclosed by the invention is used for washing a road surface, the water pump takes clean water in the water storage tank from the water intake 31 of the lower water tank 3 and pumps the clean water to the spraying opening of the sweeper through the pipeline so as to spray water flow to the road surface. In the operation process, the water quantity in the water storage tank can be continuously reduced, and the controller can control the water pump to start to continuously take water before the water level is reduced to the position of the water level detection device; in order to avoid cavitation of the water pump, when the water level drops to the position of the water level detection device, the water level detection device feeds back the water level information to the controller, and the controller controls the water pump to stop automatically.

Alternatively, the detecting device 4 is a flow meter, which is disposed at a water intake (not shown) of the lower water tank 3 and is used for detecting water amount information passing through the water intake, and the water pump is started or stopped according to the water amount information. Specifically, if the water storage tank is filled up every time when the water storage tank is filled, the total water amount in the water storage tank can be known according to the volume of the water storage tank, in the process of executing the flushing operation, the flow meter can count the water amount flowing through the water intake of the lower water tank 3, when the water amount flowing through the water intake of the lower water tank 3 is equal to the total water amount, it indicates that the water in the water storage tank is used up, only the water in the lower water tank 3 remains, and at this time, the water pump can be turned off to avoid cavitation.

Similar to the example of the water level detection device described above, the water tank system of the present disclosure may further include a controller (not shown in the figures) that is in signal connection with both the flow meter and the water pump.

In addition, in other embodiments of the present disclosure, when the detecting device is a flow meter, other flow meters may be further disposed on the first water filling joint 11 and the second water filling joint 21, respectively, for detecting the filling water amount in the water storage tank, and when the water output of the flow meter at the lower water tank is equal to the filling water amount, the water pump may be controlled to stop.

It should be noted here that the water pump of the present disclosure may be controlled to start or stop by the controller, and may also be manually controlled to start or stop by an operator, for example, in a cab of the sweeper of the present disclosure, an instrument indicating water amount information may be disposed on an instrument desk, the detection device 4 (e.g., a water level detection device, a flow meter) may directly feed back the detected water amount information to the instrument, the operator may determine whether the water pump needs to be started or stopped according to the water amount information, and if the water pump needs to be stopped, the water pump switch may be directly turned off or the power of the water pump may be cut off.

The lower water tank 3 in the embodiment of the present disclosure may be configured in any shape, for example, the lower water tank 3 may be configured in any one of a hexahedron, a cylinder, a circular truncated cone, a cone, etc., or, since the lower water tank 3 needs to be installed at the bottom of the water storage tank and installed on the vehicle frame together with the water storage tank, in some cases, the shape of the lower water tank 3 may also be designed in a more specific shape according to the structural characteristics of the vehicle frame, which is not limited by the present disclosure.

In one example of the present disclosure, as shown in fig. 1, 5, and 6, the lower water tank 3 may be configured as a hexahedron to simplify a manufacturing process and control costs. In addition, the height of the lower water tank 3 can be set between 50mm and 100mm to avoid occupying an excessive space in the vehicle frame. For the installation mode, the lower water tank 3 and the water storage tank may be integrally formed, and may also be connected by welding or the like, which is not limited by the present disclosure.

In order to improve the water storage capacity of the sweeper truck, a plurality of water storage tanks may be installed at a plurality of positions of the sweeper truck. In one example of the present disclosure, as shown in fig. 1, the water storage tanks include a first water storage tank 1 and a second water storage tank 2, bottom plates of the first water storage tank 1 and the second water storage tank 2 are both mounted on the vehicle frame and located at the same horizontal plane, a lower water tank 3 is disposed at the bottom of the second water storage tank 2, and the lower water tank 3 is communicated with the first water storage tank 1 through a first communication pipe 51. Wherein it is understood that the first water storage tank 1 and the second water storage tank 2 may be arranged in different orientations, for example, the first water storage tank 1 may be arranged in front of the sweeper frame, i.e. closer to the vehicle head, and the second water storage tank 2 may be arranged in the rear of the sweeper frame, i.e. closer to the vehicle tail, or vice versa; for another example, the first water storage tank 1 and the second water storage tank 2 may be arranged side by side in the left-right direction of the vehicle frame, which is not limited by the present disclosure.

In this disclosure, the first water storage tank 1 and the second water storage tank 2 are communicated through the first communication pipe 51, and only one filling port and one extraction port need to be provided, in the embodiment of the present disclosure, the filling port may be provided on the first water storage tank 1, and the extraction port may be provided on the lower water tank 3, so that the operations of filling water and extracting water are more convenient, and meanwhile, the cavitation of the water pump can be avoided.

Further, when water is filled into the water storage tank, because the inner diameter of the first communication pipe 51 is limited by the arrangement environment, the control needs to be within a certain range, and in unit time, the flow rate of the first communication pipe 51 is often smaller than that of the filling opening, so that the water level of the first water storage tank 1 is higher than that of the second water storage tank 2, at this time, the filling needs to be stopped, and the filling operation is performed after standing for a period of time, which results in low filling efficiency. In order to solve the above technical problem, as shown in fig. 5, the water tank system of the present disclosure further includes a plurality of second communication pipes 52, one end of each second communication pipe 52 is connected to the bottom plate of the first water storage tank 1, and the other end is connected to the bottom plate of the second water storage tank 2 to communicate the first water storage tank 1 and the second water storage tank 2. By arranging the first communicating pipe 51 and the plurality of second communicating pipes 52, the over-flow rate of the first water storage tank 1 and the second water storage tank 2 in unit time can be greatly improved, so that the filling time is reduced, and the filling work efficiency is improved; on the other hand, when filling and extraction are carried out simultaneously, the water tank 3 can be ensured to be filled with water in time and be higher than the position of the water level detection device 4, and cavitation of the water pump is avoided.

Here, the first communication pipe 51 and the second communication pipe 52 may be made of a flexible pipe made of resin, soft plastic, rubber, or the like to improve adaptability of the first communication pipe 51 to an installation environment, or may be made of a hard pipe made of metal, hard plastic, or the like to improve a service life thereof, which is not limited by the present disclosure.

In addition, both ends of the first communication pipe 51 and the second communication pipe 52 are detachably connected to the storage tank and the lower tank 3 to facilitate replacement and maintenance, for example, communication pipe joints are respectively provided at the bottom of the storage tank and the side wall of the lower tank 3, and both ends of the communication pipes are respectively connected to the communication pipe joints in various manners such as a socket joint, a screw joint, and a flange joint, which is not limited by the present disclosure.

The present disclosure also ensures that both tanks are filled at the same time by adjusting the height of one of the tanks, illustratively, as shown in fig. 1, the maximum height of the inner chamber of the second tank 2 is less than the maximum height of the inner chamber of the first tank 1. When the height difference delta H reaches a certain range, the second water storage tank 2 is always filled in the one-time filling process firstly, stopping and repeatedly performing the filling operation are not needed, and the filling process is simplified.

By way of example, the ratio of the maximum height of the interior of the second water reservoir 2 to the maximum height of the interior of the first water reservoir 1 can be 1:2, so that it can be ensured that the second water reservoir 2 is always filled first during a single filling operation.

In order to facilitate the connection of an external filler pipe (e.g., a fire hose of a city fire protection system, etc.) to a filler port and to ensure sealability during filling, as shown in fig. 1 and 5, the first storage tank 1 includes a first filling joint 11, and the first filling joint 11 is disposed on a top plate of the first storage tank 1 so as to be connected to the external filler pipe.

Further, as shown in fig. 1 to 3, the first storage tank 1 may further include an overflow pipe 12, the overflow pipe 12 being disposed inside the first storage tank 1, a lower end of the overflow pipe 12 being fixed to a bottom plate of the first storage tank 1 and communicating with the outside, and an upper end of the overflow pipe 12 extending upward in a vertical direction to be close to a top plate of the first storage tank 1 and being formed with an opening 121 inclined with respect to an extending axis. When the water level in the first water storage tank 1 reaches the inclined opening 121 of the overflow pipe 12, water flows out from the opening 121 and flows out of the first water storage tank 1 from the other end, and when a worker observes that water flows out from the lower end of the overflow pipe 12, the worker can judge that the water level in the first water storage tank 1 is close to the top plate position of the first water storage tank, and at the moment, the filling can be stopped.

In order to avoid the problem that the overflow pipe 12 is formed in a generally elongated structure and if the upper end thereof is formed as an opening 121 perpendicular to the extending axis, water may not smoothly flow into the opening 121 due to the surface tension of the water, in one example of the present disclosure, as shown in fig. 3, the upper end of the overflow pipe 12 is formed with an inclined opening 121 so that water can smoothly flow into the overflow pipe 12 from the opening 121. In another example of the present disclosure, as shown in fig. 2, the upper end periphery of the overflow pipe 12 may also be formed in a zigzag shape, also against the surface tension of water.

In one example of the present disclosure, as shown in fig. 1 and 4, a second water filling joint 21 is provided on the second water storage tank 2, the second water filling joint 21 is formed in a hook shape and includes an inlet end 211, an outlet end 212, and an intermediate section 213, the inlet end 211 is located at the same level as a ceiling of the second water storage tank 2, the outlet end 212 is connected to a sidewall of the second water storage tank 2, and the intermediate section 213 is bent upward from the inlet end 211 and folded back to the outlet end 212, and the second water filling joint 21 having such a shape enables the second water storage tank 2 to be filled with water while preventing backflow of water. Through setting up second water injection joint 21, can connect 21 water injection to first storage water tank 1 and second storage water tank 2 simultaneously through first water injection to connect 11 and the second water injection to improve water injection efficiency. After the second water filling joint 21 is provided, the first water filling joint 11 and the second water filling joint 21 can be selected arbitrarily to fill water, and the water filling method is more diversified.

Moreover, in the example that the maximum height of the inner cavity of the second water storage tank 2 is smaller than the maximum height of the inner cavity of the first water storage tank 1, correspondingly, the position of the second water injection joint 21 is also lower than the position of the first water injection joint 11, when the first water injection joint 11 is needed to be used for filling, a worker needs to perform filling work on a frame through a ladder stand or stand, and when the second water injection joint 21 is used for filling, the worker can operate only by standing on the ground, and the water injection device is very convenient.

In addition, as shown in fig. 1, the second water storage tank 2 further comprises a vent pipe 22, the lower end of the vent pipe 22 is connected with the top of the second water storage tank 2, and the upper end of the vent pipe extends upwards to be located at the same horizontal plane with the top plate of the first water storage tank 1, so that air in the second water storage tank 2 can be discharged during filling, and smooth filling is ensured.

The shape and arrangement mode of the pipe section between the upper end and the lower end of the vent pipe 22 can be designed according to other structural adaptability of the sweeper truck, in one example, when other components (such as the garbage can 7, a power system and the like) are arranged above the second water storage tank 2, the lower end of the vent pipe 22 can be connected with the middle section 213 of the second water injection joint 21, and the upper end extends upwards to be positioned on the same horizontal plane with the top plate of the first water storage tank 1 in a mode of avoiding the upper components; in another example, the lower end of the air permeable pipe 22 may be connected to the top plate of the second storage tank 2, and the upper end of the air permeable pipe 22 passes through the inside of other components and extends vertically upward to be located at the same level with the top plate of the first storage tank 1, for example, when the dustbin 7 is disposed above the second storage tank 2, the air permeable pipe 22 may also extend upward through the inside of the dustbin 7. The present disclosure is not limited to the extended orientation of the gas permeable tubing 22.

Because the water storage tank is frequently used and water scale or other sediments are easily accumulated in the water storage tank, as shown in fig. 1 and 5, an access hole 6 can be arranged on the top plate or the side wall of the water storage tank, so that a worker can conveniently overhaul and maintain the water storage tank.

Another embodiment of the present disclosure also provides a sweeper truck including a sweeping system and a water tank system according to the sweeper truck described above.

In the embodiment of the present disclosure, as shown in fig. 1, 5 and 6, the cleaning system includes a water tank system including a plurality of water storage tanks, the cleaning system includes a fan (not shown in the figure), a garbage can 7 and a suction nozzle 71, the garbage can 7 is installed on the top of one of the water storage tanks, an air suction port of the fan is connected to the garbage can 7, the suction nozzle 71 is disposed behind the garbage can 7, and the fan is used for enabling the garbage can 7 to generate a negative pressure capable of enabling the suction nozzle 71 to adsorb foreign matters, so as to clean the road garbage.

The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, various possible combinations will not be separately described in this disclosure.

In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.

Claims (10)

1. The utility model provides a water tank system of motor sweeper, its characterized in that, water tank system includes water pump, storage water tank, lower water tank (3) and detection device (4), lower water tank (3) set up the bottom of storage water tank, and with the bottom intercommunication of storage water tank, the bottom of lower water tank (3) is formed with intake (31), intake (31) with the water inlet of water pump links to each other, the volume of lower water tank (3) is far less than the volume of storage water tank, detection device (4) are used for detecting water yield information in the storage water tank and feed back water yield information, the water pump basis water yield information opens and stops.

2. The water tank system of sweeper truck according to claim 1, characterized in that the ratio of the volume of the lower water tank (3) to the volume of the water storage tank is less than 1: 120.

3. The water tank system of the sweeper truck as recited in claim 1, further comprising a controller, wherein the detection device (4) is a water level detection device which is arranged at the top of the inner cavity of the lower water tank (3) and is used for detecting water level information in the water storage tank and feeding the water level information back to the controller, and the controller is used for controlling the water pump to be started or stopped according to the water level information; alternatively, the first and second electrodes may be,

the water tank system further comprises a controller, the detection device (4) is a flow meter, the flow meter is arranged at a water taking port of the lower water tank (3) and used for detecting water quantity information passing through the water taking port, and the controller is used for controlling the water pump to start and stop according to the water quantity information.

4. The water tank system of the sweeper truck according to claim 1, wherein the water storage tanks comprise a first water storage tank (1) and a second water storage tank (2), the bottom plates of the first water storage tank (1) and the second water storage tank (2) are both mounted on a truck frame and located at the same horizontal plane, the lower water tank (3) is arranged at the bottom of the second water storage tank (2), and the lower water tank (3) is communicated with the first water storage tank (1) through a first communication pipe (51).

5. The water tank system of a sweeper truck according to claim 4, characterized in that the water tank system further comprises a plurality of second communication pipes (52), one end of the second communication pipe (52) is connected with the bottom plate of the first water storage tank (1), and the other end is connected with the bottom plate of the second water storage tank (2) to communicate the first water storage tank (1) and the second water storage tank (2).

6. The water tank system of a sweeper truck as set forth in claim 4, characterized in that the maximum height of the inner cavity of the second water storage tank (2) is less than the maximum height of the inner cavity of the first water storage tank (1).

7. The water tank system of a sweeper truck according to claim 4, characterized in that the first water storage tank (1) comprises a first water injection joint (11) and an overflow pipe (12), the first water injection joint (11) is provided on a top plate of the first water storage tank (1), the overflow pipe (12) is provided inside the first water storage tank (1), a lower end of the overflow pipe (12) is fixed to a bottom plate of the first water storage tank (1) and communicates with the outside, an upper end of the overflow pipe (12) extends upward in a vertical direction to be close to the top plate of the first water storage tank (1) and is formed with an opening (121) inclined with respect to an extending axis.

8. The water tank system of a sweeper truck according to claim 4, characterized in that a second water injection joint (21) and a vent pipe (22) are provided on the second water storage tank (2), the second water injection joint (21) is formed in a hook shape and includes an inlet end (211), an outlet end (212) and an intermediate section (213), the inlet end (211) is located at the same level as the ceiling of the second water storage tank (2), the outlet end (212) is connected to the sidewall of the second water storage tank (2), the intermediate section (213) is bent upward from the inlet end (211) and folded back to the outlet end (212), the vent pipe (22) has a lower end connected to the intermediate section (213) and an upper end extending upward to be located at the same level as the ceiling of the first water storage tank (1).

9. A sweeper truck characterized in that the sweeper truck comprises a sweeping system and a water tank system of the sweeper truck according to any one of claims 1-8.

10. The sweeper truck according to claim 9, characterized in that the water tank system comprises a plurality of water storage tanks, the sweeping system comprises a fan, a dustbin (7) and a suction nozzle (71), the dustbin (7) is mounted on the top of one of the water storage tanks, an air suction opening of the fan is connected with the dustbin (7), the suction nozzle (71) is arranged behind the dustbin (7), and the fan is used for enabling the dustbin (7) to generate negative pressure which enables the suction nozzle (71) to adsorb foreign matters.

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