Automatic water filling device for a sweeper and a sweeper

Abstract

The utility model discloses an automatic water adding device for sweeper and the sweeper with same relates to sanitation equipment technical field, automatic water adding device includes: water tank, water adding box and drive pump, water adding box is equipped with water adding mouth, water adding box communicates water tank, one end of drive pump is connected water tank, the other end is connected water adding box, and is suitable for drive water in water adding box to water tank delivery. According to the automatic water adding device for sweeper of the utility model embodiment, through setting up water adding box and drive pump, can when adding water, first send water to water adding box again through drive pump to water tank, thereby, can flexibly arrange the position and size of water tank and water adding box, facilitate whole car arrangement, and can realize automatic water adding, provide the convenience for water tank water adding.

Description

[0001] Cross-references to related applications

[0002] This application claims priority to Chinese Patent Application No. 202520579877.4, filed on March 28, 2025, entitled “Automatic water supply device for a sweeper and a sweeper”, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This utility model relates to the field of sanitation equipment technology, and in particular to an automatic water filling device for a sweeper and a sweeper having the automatic water filling device. Background Technology

[0004] In related technologies, when a water tank needs to be filled, an external water supply device needs to add water to the upper part of the water tank. Water is added to the water tank by means of a height difference. For example, an inlet is set at the top of the water tank, and water is added from top to bottom through an external water pipe. This limits the arrangement of the water tank. In addition, when the water tank has a large volume or a high height, it is not convenient to add water. Utility Model Content

[0005] This utility model aims to at least partially solve one of the technical problems in the related art. Therefore, one objective of this utility model is to provide an automatic water filling device for a sweeper. By setting up a water filling box and a drive pump, water can be first sent to the water filling box and then sent to the water tank via the drive pump. This allows for flexible arrangement of the position and size of the water tank and water filling box, facilitating the overall vehicle layout, and enables automatic water filling, providing convenience for water tank refilling.

[0006] Another objective of this invention is to provide a sweeper vehicle that includes the aforementioned automatic water filling device.

[0007] An automatic water filling device for a sweeper according to an embodiment of the present invention includes: a water tank, a water filling box, and a drive pump. The water filling box is provided with a water filling port and is connected to the water tank. One end of the drive pump is connected to the water tank and the other end is connected to the water filling box, and is adapted to drive the water in the water filling box to be delivered to the water tank.

[0008] According to the present invention, an automatic water filling device for a sweeper is provided. By setting up a water filling box and a drive pump, water can be sent to the water filling box first and then sent to the water tank through the drive pump. Thus, the position and size of the water tank and the water filling box can be flexibly arranged, which is convenient for the overall vehicle layout and can realize automatic water filling, providing convenience for water tank filling.

[0009] In addition, the automatic water filling device for a sweeper according to the above embodiments of the present invention may also have the following additional technical features: In some examples of this utility model, the water filling box is located in the water tank, and the driving pump is located in the water tank.

[0010] In some examples of this utility model, the water tank is provided with a first sensor and a second sensor. The second sensor is located at the upper part of the water tank, and the first sensor is located at the lower part of the water tank. The first sensor and the second sensor transmit signals with the drive pump to control the drive pump to drive the water in the water filling box to the water tank when the water level in the water tank is lower than the first sensor, and to stop adding water when the water level in the water tank is higher than the second sensor.

[0011] In some examples of this utility model, the water tank is provided with an overflow pipe, and in the height direction of the water tank, the overflow port of the overflow pipe is higher than the detection position of the second sensor.

[0012] In some examples of this utility model, the water filling box includes a third sensor for detecting the water level and a protective cover. The protective cover is disposed inside the water filling box, the third sensor is disposed inside the protective cover, and the protective cover extends downward toward the interior of the water filling box.

[0013] In some examples of this utility model, the water filling box is provided with a baffle plate, which divides the interior of the water filling box into a water filling area and a water storage area. The water filling area is connected to the water inlet, and a water flow channel connecting the water filling area and the water storage area is provided between the baffle plate and the bottom of the water filling box.

[0014] In some examples of this utility model, the distance between the uppermost point of the water flow channel and the lowest point of the bottom of the water box is a, and the distance between the lowest point of the bottom of the water box and the lowest point of the water inlet is b, satisfying that a < b.

[0015] In some examples of this utility model, the water filling box includes a box body and a cover body, the cover body being hinged to the box body and capable of opening or closing the water inlet.

[0016] In some examples of this utility model, an elastic element is provided between the box body and the cover body, the cover body has an open position and a closed position, and the elastic element is adapted to drive the cover body to automatically move from the open position to the closed position.

[0017] In some examples of this utility model, the periphery of the water inlet is provided with an inwardly protruding limiting plate, which stops the cover in the closed position.

[0018] In some examples of this utility model, the bottom of the box is provided with a first water outlet, and the bottom of the box extends downward to the first water outlet. The upper part of the water tank is provided with a water inlet. The first water outlet is connected to one end of the drive pump, and the water inlet is connected to the other end of the drive pump.

[0019] In some examples of this utility model, the water filling box includes a top plate, a bottom plate, a first side wall, a second side wall, and a third side wall. The first side wall and the second side wall are connected to the top plate and the bottom plate and are distributed on opposite sides of the bottom plate along a first direction. The third side wall is connected to the first side wall, the second side wall, the top plate, and the bottom plate. The bottom plate includes a plate body and an extension plate. The extension plate extends upward and is opposite to the third side wall along a second direction. The first side wall, the second side wall, the top plate, and the extension plate enclose the water filling port, wherein the first direction is perpendicular to the second direction.

[0020] The sweeper according to an embodiment of the present invention includes the aforementioned automatic water filling device for the sweeper.

[0021] According to the sweeper of this utility model embodiment, by applying the aforementioned automatic water filling device, when adding water, water can first be sent to the water filling box and then sent to the water tank through the drive pump. Thus, the position and size of the water tank and water filling box can be flexibly arranged, which is convenient for the overall vehicle layout and can realize automatic water filling, providing convenience for adding water to the sweeper. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the automatic water filling device in some embodiments of this utility model; Figure 2 This is a schematic diagram of the structure of the automatic water filling device in some embodiments of this utility model; Figure 3 This is a schematic diagram of the water box structure in some embodiments of this utility model (wherein, the cover is not shown); Figure 4 This is a cross-sectional view of the water filling box in some embodiments of this utility model; Figure 5 This is a cross-sectional view of the water filling box in some embodiments of this utility model; Figure 6 This is a cross-sectional view of the water box in some embodiments of this utility model.

[0023] Figure label: 100. Automatic water filling device; 10. Water tank; 11. First sensor; 12. Second sensor; 13. Overflow pipe; 101. Water inlet; 102. Manual water filling inlet; 15. Water level indicator pipe; 16. Water filling pipe; 17. Connector; 20. Water filling box; 201. Water filling inlet; 21. Box body; 211. Base plate; 2111. Main plate body; 2112. Extension plate; 2113. Flanged edge; 212. Water baffle plate; 21 3. Top plate; 214. Limiting plate; 215. First side wall; 216. Second side wall; 22. Cover; 23. Third sensor; 24. Protective cover; 202. Water flow channel; 210. Water injection area; 25. Elastic element; 26. Fixing plate; 27. Mounting plate; 203. First water outlet; 30. Drive pump; 31. Filter; 32. Water outlet pipe; 33. Water inlet pipe; 40. Solenoid valve; 50. Pressure switch. Detailed Implementation

[0024] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0025] Combination Figures 1 to 3 An automatic water filling device 100 for a sweeper according to an embodiment of the present invention includes: a water tank 10, a water filling box 20, and a drive pump 30. The water filling box 20 is provided with a water inlet 201 and is connected to the water tank 10. One end of the drive pump 30 is connected to the water tank 10, and the other end is connected to the water filling box 20, and is adapted to drive the water in the water filling box 20 to be transported to the water tank 10. Specifically, when the sweeper is performing road sweeping operations, it can use the water in the water tank 10 to spray water or mist to achieve a dust suppression effect.

[0026] In related technologies, when a water tank needs to be filled, an external water supply device needs to add water to the upper part of the water tank. Water is added to the water tank by means of a height difference. For example, an inlet is set at the top of the water tank, and water is added from top to bottom through an external water pipe. This limits the arrangement of the water tank. In addition, when the water tank has a large volume or a high height, it is not convenient to add water.

[0027] In this application, an external water supply device can be connected to the water filling box 20, injecting water into the water filling box 20 through the water inlet 201. The water in the water filling box 20 is then sent to the water tank 10 via a drive pump 30. Since the water filling box 20 and the water tank 10 are connected by the drive pump 30, the position of the water filling box 20 can be flexibly arranged, facilitating its coordination with the external water supply device and making it easy to add water to the water tank 10. Furthermore, since the water tank 10 is no longer limited by height differences when adding water, the size and arrangement of the water tank 10 can be more flexible, which is beneficial for the overall layout of the sweeper.

[0028] According to the present invention, the automatic water filling device 100 for a sweeper is provided with a water filling box 20 and a drive pump 30. When adding water, water is first sent to the water filling box 20 and then sent to the water tank 10 through the drive pump 30. Thus, the position and size of the water tank 10 and the water filling box 20 can be flexibly arranged, which is convenient for the overall vehicle layout and can realize automatic water filling, providing convenience for adding water to the water tank 10.

[0029] In some embodiments of this utility model, the water filling box 20 and the drive pump 30 are located within the water tank 10. This shortens the distance between the water filling box 20 and the water tank 10, as well as the distance between the drive pump 30 and both the water tank 10 and the water filling box 20, facilitating water filling and improving the structural compactness of the automatic water filling device 100. Specifically, in its arrangement, the water filling box 20 can be positioned to facilitate cooperation with an external water supply device, thus providing convenience for water filling operations.

[0030] Specifically, the water filling box 20 and the drive pump 30 can be screwed onto the water tank 10 or hung on the water tank 10, etc., and this utility model is not limited to this.

[0031] Alternatively, the water filling box 20 and / or the drive pump 30 may also be detachably connected to the water tank 10, and can be installed or removed depending on the actual application.

[0032] Combination Figure 1 In some embodiments of this utility model, a first sensor 11 and a second sensor 12 are provided in the water tank 10. The second sensor 12 is located at the upper part of the water tank 10, and the first sensor 11 is located at the lower part of the water tank 10. The first sensor 11 and the second sensor 12 transmit signals with the drive pump 30 to control the drive pump 30 to drive the water in the water filling box 20 to deliver water to the water tank 10 when the water level in the water tank 10 is lower than the first sensor 11, and to stop adding water when the water level in the water tank 10 is higher than the second sensor 12.

[0033] Specifically, the automatic water filling device 100 can be equipped with a first preset water level and a second preset water level. The first preset water level can be the minimum water level, and the second preset water level can be the maximum water level. The first sensor 11 is located at the lower part of the water tank 10 and can be used to detect the minimum water level in the water tank 10. The second sensor 12 is located at the upper part of the water tank 10 and can be used to detect the maximum water level in the water tank 10. More specifically, when the first sensor 11 does not detect water, the first sensor 11 can transmit a signal to the drive pump 30, so that the drive pump 30 can start to send water from the water filling box 20 to the water tank 10. During the water filling process, when the water level exceeds the second sensor 12, the second sensor 12 transmits a signal to the drive pump 30. At this time, the water level in the water tank 10 is high or it is full of water, and the drive pump 30 can stop working to stop the water filling operation to the water tank 10. Thus, by setting the first sensor 11 and the second sensor 12 to transmit signals with the drive pump 30, automatic water filling can be realized, providing convenience for operators to add water.

[0034] Furthermore, in some embodiments of this utility model, the water tank 10 is provided with an overflow pipe 13. In the height direction of the water tank 10, the overflow port of the overflow pipe 13 is higher than the detection position of the second sensor 12. Thus, when the water level reaches the second sensor 12, excess water can flow out from the overflow port. When the water tank 10 is nearly full, excess water can flow out from the overflow pipe 13. Specifically, the overflow port of the overflow pipe 13 is higher than the second sensor 12, allowing the overflow pipe 13 to act as a physical safeguard, ensuring that the water level does not easily exceed the height of the overflow port. Alternatively, even if the second sensor 12 fails, overflow can still be achieved.

[0035] Specifically, the second sensor 12 can be disposed on the upper part of the housing 10 so that the second sensor 12 can be connected to the housing 10, and the second sensor 12 can extend downward a certain distance so that the detection position of the second sensor 12 reaches a predetermined position.

[0036] Combination Figure 2 In some embodiments of this utility model, the water filling box 20 includes a third sensor 23 for detecting the water level and a protective cover 24. The protective cover 24 is disposed inside the water filling box 20, and the third sensor 23 is disposed inside the protective cover 24. The protective cover 24 extends downwardly toward the interior of the water filling box 20. Specifically, the water filling box 20 may have a preset water level, such as the maximum water level of the water filling box 20. By setting the third sensor 23, when the external water supply device adds water to the water filling box 20 to the preset maximum water level, the third sensor 23 can issue a prompt, thereby controlling the water supply device to stop adding water and preventing water from overflowing from the water filling box 20.

[0037] Specifically, the sweeper has a first controller, and a third sensor 23 transmits signals with the first controller. The external water supply device has a second controller, and the first controller transmits signals with the second controller. In practical applications, when the third sensor 23 detects that the water in the water tank 20 has reached a preset water level, it can send a signal to the first controller. The first controller transmits signals with the second controller to stop the external water supply device from supplying water.

[0038] Combination Figure 3 and Figure 6 In some embodiments of this utility model, a baffle plate 212 is provided inside the water filling box 20. The baffle plate 212 divides the interior of the water filling box 20 into a water filling area 210 and a water storage area. A water flow channel 202 connecting the water filling area 210 and the water storage area is provided between the baffle plate 212 and the bottom of the water filling box 20. Specifically, the water filling area 210 is connected to the water inlet 201. Water enters the water filling area 210 from the water inlet 201 and then flows into the water storage area through the water flow channel 202. The baffle plate 212 can act as a buffer when the water flow rate is large, preventing water from splashing. In addition, when the sweeper is running, the water filling box 20 may shake. The baffle plate 212 can block the water in the water storage area so that the water will not splash out due to shaking or bumping. Furthermore, by reasonably setting the height of the water filling channel 202, it is also convenient for the operator to judge the water volume in the water filling box 20.

[0039] More specifically, in some embodiments of this utility model, the distance between the uppermost point of the water flow channel 202 and the lowest point of the bottom of the water box 20 is 'a', and the distance between the lowest point of the bottom of the water box 20 and the lowest point of the water inlet 201 is 'b', satisfying that a < b. That is, the height of the water inlet 201 is higher than the highest point of the water flow channel 202. In this way, when water flows through the water flow channel 202, it is not easy for water to splash out of the water box 20 from the water inlet 201. When the water in the water storage area sloshes a lot, at the height of the water inlet 201, the water in the water storage area will be blocked by the baffle plate 212, thus preventing it from splashing out of the water inlet 201. And the water flowing through the water flow channel 202, because its height is lower than the water inlet 201, is also not easy to splash out of the water inlet 201.

[0040] Combination Figure 2 In some embodiments of this utility model, the water filling box 20 includes a box body 21 and a cover 22. The cover 22 is hinged to the box body 21 and can be opened to close the water inlet 201. In this way, the water inlet 201 can be closed when no water is added, preventing external dust from entering the box body 21 through the water inlet 201. In addition, the cover 22 can also cover the water inlet 201 when no water is added and the water filling box 20 contains water, preventing water in the water filling box 20 from splashing outwards.

[0041] Furthermore, in some embodiments of this utility model, an elastic element 25 is provided between the box body 21 and the cover body 22. The cover body 22 has an open position and a closed position. The elastic element 25 is adapted to drive the cover body 22 to automatically move from the open position to the closed position, so that the cover body 22 can automatically remain in the closed position, improving the sealing effect and eliminating the need for manual operation, thus improving the degree of automation. Specifically, when the water filling device fills water into the water filling box 20, it can extend into the water filling port 201. When the water filling device extends into the water filling port 201, it can drive the cover body 22 to move from the closed position to the open position. When water is added, since the cover body 22 has a force to move towards the closed position, the cover body 22 can also cover the space without the water filling device, which can play a certain role in preventing splashing.

[0042] After the water filling is completed, the water filling device leaves the water filling box 20, the driving force applied by the water filling device to the cover 22 disappears, and the cover 22 can automatically move to the closed position.

[0043] Furthermore, combining Figure 2 In some embodiments of this utility model, the periphery of the water inlet 201 is provided with an inwardly protruding limiting plate 214. The limiting plate 214 can stop the cover 22 from continuing to swing outward when it moves towards the closed position, so that the cover 22 can move stably to the closed position. Alternatively, when the driving force of the elastic member 25 is large, the cover 22 can abut against the limiting plate 214, thereby improving the sealing effect.

[0044] Combination Figure 4 and Figure 5 In some embodiments of this utility model, the bottom of the box body 21 is provided with a first water outlet 203, and the bottom of the box body 21 extends downward to the first water outlet 203. The upper part of the water tank 10 is provided with a water inlet 101. The first water outlet 203 is connected to one end of the drive pump 30, and the water inlet 101 is connected to the other end of the drive pump 30. Specifically, the first water outlet 203 at the bottom of the box body 21 is beneficial to improving the water output effect of the water filling box 20. In addition, the bottom of the box body 21 is constructed to extend downward to the first water outlet 203, which allows the water to flow towards the outlet by gravity, thus improving the water output efficiency of the water filling box 20. The water inlet 101 of the water tank 10 is located at the upper part of the water tank 10, which can improve the water intake effect, prevent water backflow when the drive pump 30 stops supplying water, and help avoid air entry, thereby improving the water intake volume and water intake effect. It also facilitates maintenance and repair.

[0045] Specifically, in combination Figure 1 The first outlet 203 is connected to the drive pump 30 via an outlet pipe 32, and the drive pump 30 is connected to the inlet 101 via an inlet pipe 33. The outlet pipe 32 and the inlet pipe 33 can be flexible hoses for easy and flexible arrangement.

[0046] Combination Figure 3 In some embodiments of this utility model, the water filling box 20 includes a top plate 213, a bottom plate 211, a first side wall 215, a second side wall 216, and a third side wall. The first side wall 215 and the second side wall 216 are connected to the top plate 213 and the bottom plate 211 and are distributed on opposite sides of the bottom plate 211 along a first direction. The third side wall is connected to the first side wall 215, the second side wall 216, the top plate 213, and the bottom plate 211. The bottom plate 211 includes a plate body 2111 and an extension plate 2112. The extension plate 2112 extends upward and is opposite to the third side wall along a second direction. The first side wall 215, the second side wall 216, the top plate 213, and the extension plate 2112 enclose a water filling port 201, wherein the first direction is perpendicular to the second direction. Specifically, the top plate 213, bottom plate 211, first side wall 215, second side wall 216, and third side wall together form a square box 21, with the water inlet 201 located on one side of the box 21. This allows for an enlarged size of the water inlet 201, facilitating its integration with a water supply device. Figure 1 and Figure 3 The first direction can be left-right, and the second direction can be front-back. According to the automatic water filling device 100 of this utility model embodiment, the water inlet 201 of the water filling box 20 is located on the front side, which facilitates water filling.

[0047] More specifically, the extension plate 2112 is provided with a flange 2113 extending along the second square, which can improve the structural strength at the water inlet 201. In addition, when the external water supply device extends into the box 21 to fill water, the water filling device can overlap on the flange 2113 of the extension plate 2112 to provide support and improve the stability during water filling.

[0048] Referring to the figures, in some embodiments of this utility model, the water tank 10 is provided with a manual water inlet 102 at its upper part, and a water level indicator pipe 15 extending along the height direction of the water tank 10 is provided on the side wall of the water tank 10. The automatic water filling device 100 can also be filled manually, which improves the flexibility of use. Specifically, the operator can add water through the manual water inlet 102 at the upper part of the water tank 10 and observe the water level through the water level indicator pipe 15. The manual water inlet 102 can be connected to a water filling pipe 16, one end of which is connected to the manual water inlet 102, and the other end is connected to a connector 17. The water filling pipe 16 extends a certain distance, which increases the operating space during water filling. When adding water, the connector 17 can be connected to the water filling device, and the water from the water filling device can be introduced into the water filling pipe 16 and then into the water tank 10 through the manual water inlet 102.

[0049] Combination Figure 1In some embodiments of this utility model, the water tank 10 is provided with a pressure switch 50, which is screwed onto the lower end face of the water tank 10. Since the pressure and water weight are linearly related, the real-time water volume of the water tank 10 can be calculated by the current value output by the pressure switch 50.

[0050] In some embodiments of this utility model, a filter 31 is provided between the drive pump 30 and the water filling box 20. The filter 31 can be a Y-type water filter, which can filter the water outlet of the water filling box 20, thereby protecting the drive pump 30 and improving the water quality in the water tank 10.

[0051] Alternatively, the drive pump 30 may be a diaphragm pump.

[0052] According to the sweeper of this utility model embodiment, by applying the aforementioned automatic water filling device 100, when adding water, water can first be sent to the water filling box 20 and then sent to the water tank 10 through the drive pump 30. Thus, the position and size of the water tank 10 and the water filling box 20 can be flexibly arranged, which is convenient for the overall vehicle layout and can realize automatic water filling, providing convenience for adding water to the sweeper.

[0053] A specific embodiment of the present invention will now be described with reference to the accompanying drawings. Combination Figures 1 to 6 The automatic water filling device 100 includes a water tank 10, a water filling box 20, and a drive pump 30. Specifically, the drive pump 30 is fixedly installed at the front end of the water tank 10. One end of the drive pump 30 is connected to a filter 31. The filter 31 is connected to the first outlet 203 of the water filling box 20 through a hose. The other end of the drive pump 30 is connected to the inlet 101. There are no positional or height requirements between the water tank 10 and the water filling box 20. The highest liquid level of the water tank 10 is higher than the bottom plate 211 of the water filling box 20.

[0054] The water tank 10 is equipped with a first sensor 11, which is located at the bottom of the water tank 10 and is used to detect the minimum water level. When the minimum water level in the water tank 10 is lower than the first sensor 11, a signal is output to indicate that the water tank 10 needs to be filled with water. Below the first sensor 11 is a pressure switch 50, screwed onto the lower end face of the water tank 10. Based on the linear relationship between pressure and water weight, the real-time water volume in the water tank 10 can be calculated from the current value output by the pressure switch 50. A water level indicator tube 15 is fixed at one end to the upper part of the water tank 10 and at the lower part of the water tank 10, used to observe the liquid level height in the water tank 10.

[0055] A second water outlet is located at the bottom of the water tank 10, and a solenoid valve 40 is installed at the second water outlet. When the solenoid valve 40 is opened, water from the water tank 10 is supplied for front-end spray dust suppression. An overflow pipe 13 is located on the right side of the water level indicator pipe 15, and a second sensor 12 is located on the top of the water tank 10. When the water tank 10 automatically adds water, the liquid level reaches the detection position of the second sensor 12, at which point the water tank 10 stops automatically adding water. The overflow port of the overflow pipe 13 is slightly higher than the detection position of the second sensor 12. When the water tank 10 is nearly full, excess water flows out from the overflow pipe 13. On one side of the overflow pipe 13, there is a manual water inlet 102 on the top of the water tank 10. The manual water inlet 102 is connected to the connector 17 via a manual water inlet pipe 16. The connector 17 can be connected to a faucet or water filling device to achieve manual water filling. Similarly, when the tank is full, excess water flows out from the overflow pipe 13.

[0056] A high water level sensor, namely the third sensor 23, is installed on one side of the water filling box 20. If the water inlet flow rate is greater than the water inlet 201 of the water tank 10 during automatic water filling, the water filling box 20 will store water. When the water level reaches the detection height of the third sensor 23, automatic water filling will stop to prevent water from overflowing from the water filling box 20.

[0057] The water inlet 201 of the water filling box 20 is equipped with a cover 22. Two fixing plates 26 are fixed to the top of the water filling box 20. One end of the elastic element 25 is fixed to the fixing plate 26, and the other end is fixed to the cover 22. A limiting plate 214 is fixed below the front end of the water inlet 201 of the water filling box 20. The cover 22 can be manually opened and automatically reset under the left and right sides of the elastic element 25. When reset, the limiting plate 214 acts as a limit. When water is automatically added, the pipe of the external water filling device will push the cover 22 inward and extend into the water filling box 20 to add water. After adding water, it will leave the water filling box 20, and the cover 22 will automatically reset and close the water inlet 201.

[0058] The water filling box 20 includes a box body 21, a baffle plate 212 inside the box body 21, and a mounting plate 27 outside the box body 21. The mounting plate 27 can be connected to the sweeper to improve the stability of the connection of the water filling box 20. For example, the mounting plate 27 is L-shaped, with one part of the mounting plate 27 connected to the water filling box 20 and the other part connected to the frame of the sweeper.

[0059] A protective cover 24 is welded to one side of the water filling box 20. The third sensor 23 is located inside the protective cover 24. The protective cover 24 is angled downwards to allow water flowing into the protective cover 24 to flow back into the water filling box 20 after water filling stops. The protective cover 24 is tubular to facilitate water flow. A water outlet pipe 32 is welded to the bottom of the water filling box 20, forming a first water outlet 203, which is connected to the water inlet 101 of the water tank 10.

[0060] The box body 21 includes a base plate 211, which is at a certain angle and tilts downward along the direction of the water inlet 201. The purpose is to concentrate the water near the first water outlet 203 and allow the water in the water box 20 to flow completely into the first water outlet 203 under its own weight, so as to prevent water from accumulating in the inner cavity of the water box 20 after water filling.

[0061] The distance a between the baffle plate 212 and the bottom plate 211 of the water filling box 20 and the water filling limit height b of the water filling box 20 satisfy the relationship a < b. Its function is that when the sweeper shakes, the water filling box 20 will also shake. If there is water in the water filling box 20, it can be blocked by the baffle plate 212 to prevent water from splashing out of the water filling box 20. In addition, the baffle plate 212 of the water filling box 20 also plays the role of preventing water splashing when automatically adding water.

[0062] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0063] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0064] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0065] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0066] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0067] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An automatic water filling device (100) for a sweeper, characterized in that, include: Water tank (10), A water filling box (20) is provided with a water inlet (201), and the water filling box (20) is connected to the water tank (10). A drive pump (30) is provided, one end of which is connected to the water tank (10) and the other end of which is connected to the water filling box (20), and is adapted to drive the water in the water filling box (20) to be transported to the water tank (10).

2. The automatic water supply device (100) according to claim 1, characterized in that, The water tank (10) is equipped with a first sensor (11) and a second sensor (12). The second sensor (12) is located on the upper part of the water tank (10), and the first sensor (11) is located on the lower part of the water tank (10). The first sensor (11) and the second sensor (12) transmit signals to the drive pump (30) to control the drive pump (30) to drive the water in the water filling box (20) to deliver water to the water tank (10) when the water level in the water tank (10) is lower than the first sensor (11), and to stop adding water when the water level in the water tank (10) is higher than the second sensor (12).

3. The automatic water supply device (100) according to claim 2, characterized in that, The water tank (10) is provided with an overflow pipe (13), and in the height direction of the water tank (10), the overflow port of the overflow pipe (13) is higher than the detection position of the second sensor (12).

4. The automatic water supply device (100) according to claim 1, characterized in that, The water filling box (20) includes a third sensor (23) for detecting water level and a protective cover (24). The protective cover (24) is located inside the water filling box (20), and the third sensor (23) is located inside the protective cover (24). The protective cover (24) extends downward toward the interior of the water filling box (20).

5. The automatic water supply device (100) according to claim 1, characterized in that, The water filling box (20) is provided with a baffle plate (212), which divides the interior of the water filling box (20) into a water filling area (210) and a water storage area. The water filling area (210) is connected to the water inlet (201). A water flow channel (202) connecting the water filling area (210) and the water storage area is provided between the baffle plate (212) and the bottom of the water filling box (20).

6. The automatic water supply device (100) according to claim 5, characterized in that, The distance between the uppermost point of the water flow channel (202) and the lowest point of the bottom of the water filling box (20) is a, and the distance between the lowest point of the bottom of the water filling box (20) and the lowest point of the water inlet (201) is b, satisfying that a < b.

7. The automatic water supply device (100) according to claim 1, characterized in that, The water filling box (20) includes a box body (21) and a cover (22), the cover (22) being hinged to the box body (21) and capable of opening or closing the water inlet (201).

8. The automatic water supply device (100) according to claim 7, characterized in that, An elastic element (25) is provided between the box body (21) and the cover body (22). The cover body (22) has an open position and a closed position. The elastic element (25) is adapted to drive the cover body (22) to automatically move from the open position to the closed position; and / or The periphery of the water inlet (201) is provided with an inwardly protruding limiting plate (214), which stops the cover (22) in the closed position; and / or The bottom of the box (21) is provided with a first water outlet (203), and the bottom of the box (21) extends downward to the first water outlet (203). The upper part of the water tank (10) is provided with a water inlet (101). The first water outlet (203) is connected to one end of the drive pump (30), and the water inlet (101) is connected to the other end of the drive pump (30).

9. The automatic water supply device (100) according to claim 1, characterized in that, The water filling box (20) includes a top plate (213), a bottom plate (211), a first side wall (215), a second side wall (216), and a third side wall. The first side wall (215) and the second side wall (216) are connected to the top plate (213) and the bottom plate (211) and are distributed along a first direction on opposite sides of the bottom plate (211). The third side wall is connected to the first side wall (215), the second side wall (216), the top plate (213), and the bottom plate (211). The base plate (211) includes a plate body (2111) and an extension plate (2112). The extension plate (2112) extends upward and is opposite to the third side wall in a second direction. The first side wall (215), the second side wall (216), the top plate (213), and the extension plate (2112) enclose the water inlet (201). The first direction is perpendicular to the second direction.

10. A sweeper vehicle, characterized in that, Includes an automatic water filling device (100) for a sweeper according to any one of claims 1-9.

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