Automatic water filling and drainage device and cleaning robot for water tank

Abstract

The present invention discloses an automatic water filling and drainage device for a water tank and a cleaning robot, which belongs to the field of automatic control technology. The water tank comprises a tank cover, a clean water tank and a sewage tank, the sewage tank is nested in the clean water tank, the tank cover is covered on the sewage tank and the clean water tank, and a small cover is also provided in the tank cover; the automatic water filling and drainage device comprises a water filling and drainage assembly and a switch assembly, the water filling and drainage assembly comprises a vertically arranged sewage extraction pipe, and a blocking member is provided at the end of the sewage extraction pipe; the switch assembly comprises a mandrel and a spring, the mandrel can move up and down along the sewage extraction pipe, and the mandrel always maintains a downward trend under the action of the spring; the cleaning robot comprises a water tank and the above-mentioned automatic water filling and drainage device for a water tank. The small cover is opened and closed by the rise and fall of the sewage extraction pipe, in cooperation with the mandrel and the spring, so as to realize the suction of sewage in the sewage tank.

Description

[0001] This application is a divisional application of the patent application with application number 202111139676.5 (the filing date of the original application is September 27, 2021, and the name of the invention is an automatic filling and drainage device and cleaning robot for water tanks). Technical Field

[0002] The present invention relates to the field of automatic control technology, and in particular to an automatic water filling and drainage device for a water tank and a cleaning robot. Background Art

[0003] Smart cleaning robots are becoming more and more popular in various indoor environments, such as shopping malls, office buildings, walkways, hotels and homes.

[0004] The current commercial cleaning robot workstation has a single function, which can only be used for charging and collecting garbage. The machine's sewage cleaning and water addition can only be done manually, and the cleaning of the sewage tank also requires manual operation, which increases the cost of using the machine. Summary of the invention

[0005] The purpose of the present invention is to provide an automatic water filling and drainage device for a water tank and a cleaning robot, so as to solve the technical problem that the existing cleaning robots have complicated cleaning.

[0006] As conceived above, the technical solution adopted by the present invention is:

[0007] In order to achieve the above object, the specific scheme provided by the present invention is as follows:

[0008] In a first aspect, an embodiment of the present invention provides an automatic water filling and drainage device for a water tank, wherein the water tank comprises a tank cover, a clean water tank and a dirty water tank, wherein the dirty water tank is nested in the clean water tank, the tank cover is fitted on the dirty water tank and the clean water tank, and a small cover is further provided in the tank cover;

[0009] The automatic water filling and drainage device comprises:

[0010] A drainage assembly includes a vertically arranged sewage extraction pipe, the end of which is provided with a blocking member;

[0011] The switch assembly comprises a push rod and a spring, wherein the push rod can move up and down along the sewage extraction pipe, and the push rod always maintains a downward trend under the action of the spring;

[0012] When drainage is required, the drainage assembly moves downward, the sewage pumping pipe moves downward, the top rod descends under the action of the spring, the small cover flips open after the top rod descends and hits, the sewage pumping pipe continues to descend, and the sewage pumping pipe extends downward into the sewage tank to suck the sewage in the sewage tank;

[0013] After the operation is completed, when the sewage extraction pipe moves upward, the blocking member is driven to move upward, and the blocking member pushes the top rod upward, and the small cover returns to the closed state.

[0014] Optionally, there is also an avoidance portion, which is used to avoid opening of the small cover; one end of the push rod is connected to the bottom end of the sewage extraction pipe, and the other end of the push rod is connected to the avoidance portion through the spring.

[0015] Optionally, two springs are provided.

[0016] Optionally, the blocking member includes a limiting ring arranged at the bottom of the sewage extraction pipe, and the bottom end of the sewage extraction pipe is connected to the limiting ring after extending out of the top rod.

[0017] Optionally, it also includes a driving assembly, which includes a rack, a gear, a transverse member, a motor and a vertically arranged guide rod. The drainage and water supply assembly, the gear and the motor are all arranged on the transverse member, the rack and the guide rod are arranged relatively parallel, the driving shaft of the motor is engaged with the gear, and the gear is engaged with the rack. Under the coordinated movement of the motor and the rack, the drainage and water supply assembly can move up and down along the guide rod.

[0018] Optionally, the automatic water filling and drainage device further comprises a spray pipe, the upper end of the spray pipe is fixed on the transverse member, and the lower end of the spray pipe faces the sewage tank;

[0019] While the sewage extraction pipe performs sewage extraction operation on the sewage tank, the spray pipe performs water spraying operation on the sewage tank.

[0020] Optionally, the spray pipe is sleeved on the sewage extraction pipe, and a hole is opened on the side of the bottom end of the spray pipe.

[0021] Optionally, an integrally formed sealing cover is fixedly disposed on the transverse member, and the sealing cover comprises:

[0022] A sewage suction interface and a clean water interface are isolated from each other, wherein the sewage suction interface is connected to the top end of the sewage extraction pipe, and the clean water interface is connected to the spray pipe.

[0023] Optionally, the water supply and drainage assembly further includes a water supply pipe arranged vertically;

[0024] When the sewage pumping pipe moves downward, the water adding pipe moves downward accordingly, and the lower end of the water adding pipe transports clean water into the clean water tank; when the sewage pumping pipe moves upward, the water adding pipe moves upward accordingly.

[0025] In a second aspect, an embodiment of the present application further provides a cleaning robot, comprising a water tank and the automatic filling and drainage device for the water tank as described above.

[0026] The automatic water supply and drainage device and cleaning robot for a water tank provided by the above-mentioned embodiment of the present invention, when water supply and drainage are needed, the water supply and drainage assembly moves downward, the sewage pumping pipe moves downward, the top rod descends under the action of the spring, the small cover flips open after the top rod descends and hits, the sewage pumping pipe continues to descend, and the sewage pumping pipe extends downward into the sewage tank to suck the sewage in the sewage tank; after the operation is completed, when the sewage pumping pipe moves upward, it drives the blocking member to move upward, the blocking member will push the top rod upward, and the small cover resumes the covering state. The small cover is opened and closed by the rise and fall of the sewage pumping pipe in cooperation with the top rod and the spring, and then the sewage in the sewage tank is sucked, the operation of manually cleaning the sewage is omitted, the manual operation of the cleaning robot is reduced, and the convenience is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative labor.

[0028] Figure 1 A schematic diagram of the overall structure of an automatic water filling and drainage device provided by an embodiment of the present invention;

[0029] Figure 2 A schematic diagram of a partial structure of an automatic water supply and drainage device provided in an embodiment of the present invention Figure 1 ;

[0030] Figure 3 A schematic diagram of the structure of a sealing cover of an automatic water supply and drainage device provided in an embodiment of the present invention;

[0031] Figure 4 A schematic diagram of a partial structure of an automatic water supply and drainage device provided in an embodiment of the present invention Figure 2 ;

[0032] Figure 5 A schematic diagram of a partial structure of an automatic water supply and drainage device provided in an embodiment of the present invention Figure 3 ;

[0033] Figure 6 A schematic diagram of the structure of a box cover of an automatic water supply and drainage device provided in an embodiment of the present invention;

[0034] Figure 7 A schematic diagram of water inlet and outlet of the automatic water filling and drainage device provided in an embodiment of the present invention.

[0035] Summary of reference numerals:

[0036] Automatic water supply and drainage device 100;

[0037] A water supply pipe 111, a sewage extraction pipe 112, a spray pipe 113, and a sealing cover 114;

[0038] Transverse member 121, motor 123, rack 122, guide rod 124, gear 125; top rod 131, spring 132, blocking member 133;

[0039] Water tank 200 , clean water tank 210 , tank cover 220 , avoidance portion 221 , small cover 222 , sewage tank 230 . DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] See also Figure 1 , is a schematic diagram of the structure of an automatic water filling and drainage device 100 for a water tank provided by an embodiment of the present invention. Figure 1 As shown, the water tank 200 includes a clean water tank 210, a tank cover 220 and a sewage tank 230. The sewage tank 230 is nested in the clean water tank 210, and the tank cover 220 covers the sewage tank 230 and the clean water tank 210.

[0042] The automatic water supply and drainage device 100 mainly comprises:

[0043] The drainage assembly includes a vertically arranged sewage suction pipe 112 and a water supply pipe 111, and a blocking member 133 is provided at the end of the sewage suction pipe 112;

[0044] The driving assembly includes a transverse member 121, a rack 122, a motor 123 and a vertically arranged guide rod 124. The water supply assembly is arranged on the transverse member 121 and moves up and down along the guide rod 124 under the coordinated movement of the motor 123 and the rack 122;

[0045] The switch assembly includes a push rod 131 and a spring 132. The push rod 131 moves up and down along the sewage extraction pipe 112 and maintains balance under the joint action of the blocking member 133 and the spring 132.

[0046] When drainage is required, the drainage assembly moves downward, the top rod 131 descends and opens the tank cover 220 , and the sewage extraction pipe 112 and the water filling pipe 111 perform sewage extraction and / or water filling operations on the water tank 200 .

[0047] The automatic water filling and drainage device 100 provided in this embodiment is applied to the water tank 200 of the sweeping robot, and the water tank 200 includes a clean water tank 210 for holding clean water and a sewage tank 230 for holding sewage, and the clean water tank 210 and the sewage tank 230 are arranged in a nested manner. The sweeping robot is used to transport the clean water in the clean water tank 210 to the ground to clean the stains on the ground, and then suck the washed sewage into the sewage tank 230. After returning to the workstation, the automatic water filling and drainage device 100 at the workstation transports clean water to the clean water tank 210 and pumps out the sewage in the sewage tank 230.

[0048] The main functional components of the automatic water supply and drainage device 100 include a water supply and drainage assembly, which includes a vertically arranged water supply pipe 111 and a sewage suction pipe 112. The water supply pipe 111 is arranged toward the clean water tank 210 and is used to inject clean water into the clean water tank 210. The sewage suction pipe 112 is arranged toward the sewage tank 230 and is used to suck the sewage in the sewage tank 230. In addition, the automatic water supply and drainage device 100 also includes a driving assembly and a switch assembly, which cooperate with the auxiliary water supply and drainage assembly to perform water supply and drainage operations. In addition, support mechanisms such as guide rods 124 and transverse members 121 are also provided.

[0049] During specific operation, the transverse member 121 moves downward along the guide rod 124, the top rod 131 moves up and down along the sewage suction pipe 112 and maintains balance under the joint action of the blocking member 133 and the spring 132, the top rod 131 descends and opens the box cover 220, the sewage suction pipe 112 extends downward into the sewage tank 230, sucks the sewage in the sewage tank 230, and the lower end of the water filling pipe 111 transports clean water into the clean water tank 210.

[0050] According to a specific embodiment of the present application, the automatic water filling and drainage device 100 further includes a gear 125 , and the gear 125 and the motor 123 are disposed on the transverse member 121 ;

[0051] The rack 122 and the guide rod 124 are arranged relatively parallel to each other, the driving shaft of the motor 123 is meshed with the gear 125 , and the gear 125 is meshed with the rack 122 .

[0052] like Figure 1 As shown, in this embodiment, the horizontal member 121 is a support structure that moves up and down along the guide rod 124, the rack 122 is fixed relative to the guide rod 124, and the motor 123 drives the gear 125 to engage with the rack 122, so that the horizontal member 121 moves up and down along the rack 122. When automatic water filling and drainage is required, the motor 123 controls the gear 125 to drive the horizontal member 121 to move downward along the rack 122. When the automatic water filling and drainage is completed, the motor 123 controls the gear 125 to drive the horizontal member 121 to move upward along the rack 122. The forward and reverse rotation of the motor 123 can be manually controlled, and of course, a processor can be added to automatically control the forward and reverse rotation of the motor 123, so as to further improve the convenience of automatic water filling and drainage.

[0053] Of course, the transmission connection structure may also have other implementation schemes, such as replacing the meshing structure of the gear rack with a replacement structure of a screw rod and a nut seat, or other transmission connection structure replacement, without limitation.

[0054] According to another specific embodiment of the present application, the automatic water filling and drainage device 100 further includes a spray pipe 113, the upper end of the spray pipe 113 is fixed to the transverse member 121, and the lower end of the spray pipe 113 faces the sewage tank 230;

[0055] While the sewage extraction pipe 112 performs sewage extraction operation on the sewage tank 230 , the spray pipe 113 performs water spraying operation on the sewage tank 230 .

[0056] The present embodiment adds a spray pipe 113 , which is mainly used to spray clean water to clean the residual sewage in the sewage tank 230 after the sewage in the sewage tank 230 is sucked out by the sewage suction pipe 112 , and then the sewage is sucked out by the sewage suction pipe 112 to improve the cleaning effect of the sewage tank 230 .

[0057] Furthermore, the spray pipe 113 is sleeved on the sewage extraction pipe 112 .

[0058] like Figure 1 and Figure 2 As shown, the spray pipe 113 is sleeved on the sewage extraction pipe 112, and can directly spray toward the working area of ​​the sewage extraction pipe 112. The specific structure of the spray pipe 113 can be various, such as an opening at the bottom end, or a hole at the side of the bottom end, etc., which is not limited.

[0059] Optional, such as Figure 3 As shown, an integrally formed sealing cover 114 is fixedly disposed on the transverse member 121, and the sealing cover 114 includes:

[0060] The sewage suction interface and the clean water interface are isolated from each other, the sewage suction interface is connected to the top of the sewage extraction pipe 112, and the clean water interface is connected to the spray pipe 113.

[0061] In this embodiment, a sealing cover 114 is fixedly arranged on the transverse member 121, connecting the sleeved spray pipe 113 and the sewage suction pipe 112. The clean water interface is connected to the spray pipe 113 to spray clean water. The sewage suction pipe 112 is connected to the sewage suction interface to suck sewage. The one-piece sealing cover 114 reduces the cost and overall volume, and increases the isolation and sealing performance.

[0062] According to another embodiment of the present application, Figure 2 , Figure 4 , Figure 5 and Figure 6As shown, there is also an escape portion 221, which is generally arc-shaped to facilitate the opening of the box cover 220; one end of the top rod 131 is connected to the bottom end of the sewage extraction pipe 112, and the other end of the top rod 131 is connected to the escape portion 221 through a spring 132. Optionally, as Figure 6 As shown, a small cover 222 is provided in the box cover 220 on the clean water tank 210 . The small cover 222 flips over after the top rod 131 falls and hits. The avoidance portion 221 is used to avoid the opening of the small cover 222 .

[0063] This embodiment further defines the opening structure of the small cover of the clean water tank 210. Specifically, Figure 5 As shown, the push rod 131 and the spring 132 are arranged at the bottom of the sewage extraction pipe 112. The push rod 131 always maintains a downward trend under the action of the two springs 132. When there is no drainage, the motor is at the top, and the push rod 131 is balanced with the tension of the spring 132 under the action of the lower end of the sewage extraction pipe 112, and the push rod 131 does not extend below. When performing the drainage operation, the motor 123 rotates, the drainage assembly descends, and the push rod 131 descends under the action of the spring 132, so that the small cover 222 is turned over and opened, and the sewage extraction pipe 112 and the water supply pipe 111 continue to descend. After the operation is completed, the motor 123 drives to rise, and the push rod 131 is driven to overcome the tension of the spring 132 and rise under the action of the blocking member 133, and the small cover 222 is turned over and closed, and the drainage is completed. Further, the blocking member 133 includes a limit ring arranged at the bottom of the sewage extraction pipe 112, and the bottom end of the sewage extraction pipe 112 extends out of the push rod 131 and is connected to the limit ring.

[0064] The blocking member 133 is added, and when the sewage pumping pipe 112 moves downward, the sewage pumping pipe 112 is separated from the top rod 131. When the sewage pumping pipe 112 moves upward, the blocking member 133 is driven to move upward, and the blocking member 133 pushes the top rod 131 upward, and the spring 132 moves upward accordingly, and the small cover 222 of the clean water tank 210 resumes the closed state.

[0065] On the basis of the above-mentioned embodiments, the automatic filling and drainage device 100 also includes a three-way valve, a ball valve, a first water pump and a second water pump; wherein the external water inlet is respectively connected to the water inlets of the first water pump and the ball valve, the water outlet of the ball valve is connected to the water filling pipe 111, the water outlet of the first water pump is connected to the three-way valve, the three-way valve is respectively connected to the water inlet of the spray pipe 113 and the water outlet of the sewage pipe 112, and the water outlet of the three-way valve is connected via the external drainage port of the second water pump.

[0066] This embodiment specifically defines the connection scheme between the automatic water inlet and the external water outlet. Figure 6As shown, the clean water from the external water inlet enters the first water pump and the ball valve respectively, enters the water supply pipe 111 through the water outlet of the ball valve, and enters the three-way valve through the water outlet of the first water pump. The three-way valve is connected to the water inlet of the spray pipe 113 and the water outlet of the sewage pumping pipe 112 respectively. The clean water entering the three-way valve is sprayed into the sewage tank 230, and the sewage in the sewage pumping pipe 112 is discharged to the external drain outlet through the water outlet of the three-way valve and the second water pump, and is generally discharged into the sewer. In this way, the automatic water supply and drainage of the entire process is completed.

[0067] In summary, the automatic water filling and drainage device provided in the embodiment of the present application realizes the situation where adding clean water, sucking sewage, and cleaning the sewage tank can work simultaneously, fully realizing the unmanned cleaning of commercial cleaning robots, greatly improving the cleaning efficiency, and also reducing labor costs.

[0068] The embodiment of the present application also provides a cleaning robot, including a water tank and an automatic water filling and drainage device. The automatic water filling and drainage device for the water tank can be the automatic water filling and drainage device provided in the above embodiment.

[0069] The water tank comprises a tank cover, a clean water tank and a sewage tank. The sewage tank is nested in the clean water tank, and the tank cover is fitted in the sewage tank and the clean water tank.

[0070] In addition, the cleaning robot may also include inherent structures such as a base plate, driving wheels, and a power supply unit, which will not be described in detail.

[0071] In the cleaning robot provided by the above embodiment of the present invention, in the automatic water filling and drainage device included therein, the transverse member moves downward along the guide rod, the sewage suction pipe extends downward into the sewage tank, sucks the sewage in the sewage tank, and the lower end of the water filling pipe delivers clean water to the clean water tank. The sewage in the sewage tank is sucked by the sewage suction pipe, and clean water is delivered to the clean water tank simultaneously, and water is automatically filled and drained, eliminating the manual operations of washing sewage and adding water, reducing the manual operation of the cleaning robot, and improving convenience. The specific implementation process of the provided cleaning robot can refer to the specific implementation process of the automatic water filling and drainage device provided in the above embodiment, which will not be repeated here.

[0072] The embodiments of the present invention are described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementation modes, which are merely illustrative rather than restrictive. Under the guidance of the present invention, ordinary technicians in this field can also make many forms without departing from the scope of protection of the present invention and the claims, all of which are within the protection of the present invention.

Claims

1. An automatic water filling and drainage device for a water tank, characterized in that: The water tank (200) comprises a tank cover (220), a clean water tank (210) and a sewage tank (230); the sewage tank (230) is nested in the clean water tank (210); the tank cover (220) covers the sewage tank (230) and the clean water tank (210); a small cover (222) is further provided in the tank cover (220); The automatic water supply and drainage device comprises: A drainage assembly comprises a vertically arranged sewage extraction pipe (112), wherein a blocking member (133) is provided at the end of the sewage extraction pipe (112); A switch assembly comprises a push rod (131) and a spring (132); the push rod (131) can move up and down along the sewage extraction pipe (112); and the push rod (131) always maintains a downward trend under the action of the spring (132); When drainage is required, the drainage assembly moves downward, the sewage extraction pipe (112) moves downward, the top rod (131) descends under the action of the spring (132), the small cover (222) flips open after the top rod (131) descends and hits, the sewage extraction pipe (112) continues to descend, and the sewage extraction pipe (112) extends downward into the sewage tank (230) to suck the sewage in the sewage tank (230); After the operation is completed, when the sewage extraction pipe (112) moves upward, it drives the blocking member (133) to move upward, and the blocking member (133) pushes the top rod (131) upward, and the small cover (222) returns to the closed state; The water supply and drainage assembly further comprises a water supply pipe (111) arranged vertically; when the sewage suction pipe (112) moves downward, the water supply pipe (111) moves downward accordingly, and the lower end of the water supply pipe (111) transports clean water into the clean water tank (210); when the sewage suction pipe (112) moves upward, the water supply pipe (111) moves upward accordingly; The automatic drainage device further comprises a driving assembly, the driving assembly comprising a rack (122), a gear (125), a transverse member (121), a motor (123) and a vertically arranged guide rod (124); the drainage assembly, the gear (125) and the motor (123) are all arranged on the transverse member (121); the rack (122) and the guide rod (124) are arranged relatively parallel; the driving shaft of the motor (123) is meshed with the gear (125); the gear (125) is meshed with the rack (122); and under the coordinated movement of the motor (123) and the rack (122), the drainage assembly can move up and down along the guide rod (124); The automatic drainage device further comprises an avoidance portion (221), and the avoidance portion (221) is used to avoid the opening of the small cover (222); one end of the push rod (131) is connected to the bottom end of the sewage extraction pipe (112), and the other end of the push rod (131) is connected to the avoidance portion (221) via the spring (132).

2. The automatic water filling and drainage device according to claim 1, characterized in that: Two springs (132) are provided.

3. The automatic water filling and drainage device according to claim 1, characterized in that: The blocking member (133) comprises a limiting ring arranged at the bottom of the sewage extraction pipe (112); the bottom end of the sewage extraction pipe (112) extends out of the top rod (131) and is connected to the limiting ring.

4. The automatic water filling and drainage device according to claim 1, characterized in that: The automatic water filling and drainage device further comprises a spray pipe (113), the upper end of the spray pipe (113) is fixed on the transverse member (121), and the lower end of the spray pipe (113) faces the sewage tank (230); While the sewage extraction pipe (112) is performing a sewage extraction operation on the sewage tank (230), the spray pipe (113) is performing a water spraying operation on the sewage tank (230).

5. The automatic water filling and drainage device according to claim 4, characterized in that: The spray pipe (113) is sleeved on the sewage extraction pipe (112), and a hole is opened on the side of the bottom end of the spray pipe (113).

6. The automatic water filling and drainage device according to claim 4, characterized in that: An integrally formed sealing cover (114) is fixedly disposed on the transverse member (121), and the sealing cover (114) comprises: A sewage suction interface and a clean water interface are isolated from each other, wherein the sewage suction interface is connected to the top end of the sewage extraction pipe (112), and the clean water interface is connected to the spray pipe (113).

7. A cleaning robot, characterized in that: The invention comprises a water tank (200) and an automatic filling and draining device for the water tank as claimed in any one of claims 1 to 6.

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