Water fullness feedback structure of scrubber

Abstract

The water fullness feedback structure comprises a limiting barrel arranged in a sewage tank, a buoy is arranged in the limiting barrel, the top end of the limiting barrel is open and is connected with a movable column in a sliding mode, the movable column is connected with the buoy, a metal contact block is arranged at the top end of the movable column, and the metal contact block is connected with the limiting barrel in a sliding mode. Two conduction plates are arranged at the top of the sewage tank, a gap is reserved between the two conduction plates, a PCB used for controlling the scrubber is arranged in the scrubber, a sound production module is arranged on the PCB, when the metal contact block abuts against the two conduction plates, the conduction plates are electrically connected with the metal contact block, and the sound production module is electrically connected with the metal contact block. And the sounding module is started to give out a warning tone. The floor scrubber has the advantage that when sewage in the sewage tank reaches a certain water level height, the floor scrubber gives out a warning tone so as to remind a user to pour the sewage in time.

Description

Technical Field

[0001] The utility model relates to the field of floor scrubbers, in particular to a water fullness feedback structure of a floor scrubber. Background Art

[0002] A floor scrubber is a cleaning machine that is suitable for cleaning hard floors and sucking out wastewater at the same time, and taking the wastewater away from the site. It has the advantages of environmental protection, energy saving, and high efficiency. Floor scrubbers are divided into semi-automatic floor scrubbers, fully automatic floor scrubbers, hand-push floor scrubbers, and ride-on floor scrubbers.

[0003] The floor scrubber includes a clean water tank, a sewage tank and a machine head. The front end of the machine head is rotatably connected to a mopping strip. The clean water tank is connected to a water supply pipe with a smaller diameter. The water supply pipe is connected to the mopping strip facing the machine head. During the operation of the floor scrubber, the water supply pipe continuously sprays water to the mopping strip, so that the surface of the mopping strip close to the water supply pipe is moistened. The moistened surface of the mopping strip then rotates to contact the ground to achieve mopping. The sewage tank is connected to an air suction pipe, the end of which points to the mopping strip. When the mopping strip rotates, the part in contact with the ground first rotates to face the air suction pipe. The air suction pipe absorbs the garbage on the mopping strip and some of the sewage at that place. Then the place rotates to face the water supply pipe, so that the place is moistened again.

[0004] During the floor cleaning process, sewage sucked in by the suction pipe is collected in the sewage tank. When the sewage tank collects too much sewage, the sewage will overflow and pollute the floor. Therefore, the applicant believes that there is an urgent need for a water fullness feedback structure of the floor scrubber to feedback the water fullness of the sewage tank. Utility Model Content

[0005] The utility model provides a water full feedback structure of a floor scrubber, which can timely feedback the water full structure of a sewage tank, thereby reducing the situation where sewage in the sewage tank overflows and causes the ground to be polluted again.

[0006] The utility model provides a water full feedback structure for a floor scrubber that adopts the following technical solution:

[0007] A water full feedback structure for a floor scrubber comprises a limiting cylinder arranged in a sewage tank, a buoy is arranged in the limiting cylinder, the top end of the limiting cylinder is open and is slidably connected with a movable column, the movable column is connected to the buoy, a metal contact is arranged on the top end of the movable column, two conducting plates are arranged on the top of the sewage tank, a space is left between the two conducting plates, a PCB board for controlling the floor scrubber is arranged in the floor scrubber, a pronunciation module is arranged on the PCB board, when the metal contact is in contact with both conducting plates, the conducting plates are electrically connected to the metal contact, the pronunciation module is started to emit a prompt sound.

[0008] Preferably, a guide cylinder is integrally connected to the top end of the limiting cylinder, the movable column is slidably connected to the guide cylinder, and the inner diameter of the guide cylinder is equal to the outer diameter of the movable column.

[0009] Preferably, the limiting cylinder is vertically arranged, and a water inlet hole is penetrated through the side wall of the bottom end of the limiting cylinder, and the length direction of the water inlet hole is consistent with the height direction of the limiting cylinder.

[0010] Preferably, a plurality of ventilation holes are formed on the top wall of the limiting cylinder.

[0011] Preferably, the buoy is spherical, and the diameter of the buoy is equal to the diameter of the limiting cylinder.

[0012] Preferably, the metal contact is hemispherical, the conduction plate is an arc plate, the center and diameter of the two conduction plates are the same, the bottom walls of the two conduction plates are inclined surfaces close to each other, the distance from the side where the two conduction plates are close to each other to the top of the limiting tube is greater than the distance from the side where the conduction plates are far away from each other to the top of the limiting tube, and when the metal contact abuts against the conduction plate, the spherical surface of the metal contact abuts against the inclined surface of the conduction plate.

[0013] Preferably, a spacer column is integrally connected to the side of the metal contact away from the spherical surface, a limiting ring is provided at one end of the spacer column away from the metal contact, the movable column is hollow and a limiting groove is provided on the inner wall, and the limiting ring is clamped in the limiting ring.

[0014] Preferably, a receiving seat is provided on the bottom wall of the limiting cylinder, and when the bottom of the buoy abuts against the receiving seat, the metal contact block is still located outside the guide cylinder.

[0015] Preferably, the side of the receiving seat close to the buoy is a concave spherical surface, and when the buoy abuts against the receiving seat, the spherical surface of the receiving seat fits with the spherical surface of the buoy.

[0016] To sum up, the utility model includes at least one of the following beneficial technical effects: when the sewage level in the limiting cylinder in the sewage tank begins to rise, the sewage drives the buoy to float up until the metal contact block at the top of the buoy rises and abuts against the two conductive plates, forming a disconnected circuit between the two conductive plates. The presence of the metal contact block forms a medium connecting the two conductive plates, making the circuit connected, thereby triggering the pronunciation module on the PCB board, causing the floor scrubber to emit a warning sound that the sewage tank is full of water. After the user knows that the sewage in the sewage tank is full, the sewage in the sewage tank can be poured out in time, which is conducive to reducing the situation where the sewage in the sewage tank is too full and causes overflow. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of a floor scrubber of the present application.

[0018] Figure 2 It is a cross-sectional view of a water full feedback structure of a floor scrubber of the present application.

[0019] Explanation of the reference numerals: 1. Sewage tank; 2. Limiting cylinder; 3. Float; 4. Movable column; 5. Metal contact block; 6. Conducting plate; 7. Guide cylinder; 8. Water inlet hole; 9. Air vent; 10. Spacer column; 11. Limiting ring; 12. Limiting groove; 13. Socket. DETAILED DESCRIPTION

[0020] The following is combined with Figure 1-2 The utility model is described in further detail.

[0021] The utility model embodiment discloses a water full feedback structure of a floor scrubber.

[0022] Reference Figure 1 as well as Figure 2 A water full feedback structure of a floor scrubber comprises a limiting cylinder 2 arranged in a sewage tank 1, a buoy 3 is arranged in the limiting cylinder 2, the top of the limiting cylinder 2 is open and slidably connected with a movable column 4, the movable column 4 is connected to the buoy 3, a metal contact block 5 is arranged on the top of the movable column 4, two conducting plates 6 are arranged on the top of the sewage tank 1, a space is left between the two conducting plates 6, a PCB board for controlling the floor scrubber is arranged in the floor scrubber, a pronunciation module is arranged on the PCB board, when the metal contact block 5 abuts against the two conducting plates 6, the conducting plates 6 are electrically connected to the metal contact block 5, the pronunciation module is started to emit a prompt sound.

[0023] When the sewage level in the limiting cylinder 2 in the sewage tank 1 begins to rise, the sewage drives the buoy 3 to float up until the metal contact 5 at the top of the buoy 3 rises and abuts against the two conducting plates 6, forming a disconnected circuit between the two conducting plates 6. The presence of the metal contact 5 forms a medium connecting the two conducting plates 6, making the circuit connected, thereby triggering the pronunciation module on the PCB board, causing the floor scrubber to emit a warning sound that the sewage tank 1 is full of water. After the user learns that the sewage in the sewage tank 1 is full, the sewage in the sewage tank 1 can be poured out in time, which is conducive to reducing the situation where the sewage in the sewage tank 1 is too full and causes overflow.

[0024] Reference Figure 1 as well as Figure 2 In this embodiment, the top end of the limiting cylinder 2 is integrally connected with a guide cylinder 7, the movable column 4 is slidably connected to the guide cylinder 7, and the inner diameter of the guide cylinder 7 is equal to the outer diameter of the movable column 4.

[0025] When the movable column 4 slides up and down, the side wall of the movable column 4 fits against the inner wall of the guide cylinder 7, and the guide cylinder 7 limits the movable column 4 to slide only along the height direction of the guide cylinder 7. At the same time, the movable column 4 can stably drive the metal contact block 5 to slide up and down, which is beneficial to improving the abutment stability between the metal contact block 5 and the conduction plate 6, and is beneficial to reducing the uneven force on the buoy 3 caused by the shaking of sewage, which in turn causes the movable column 4 to shake left and right, thereby causing poor contact.

[0026] Reference Figure 1 as well as Figure 2 In the present embodiment, the limiting cylinder 2 is vertically arranged, and a water inlet hole 8 is penetrated through the side wall of the bottom end of the limiting cylinder 2 , and the length direction of the water inlet hole 8 is consistent with the height direction of the limiting cylinder 2 .

[0027] When there is sewage in the sewage tank 1, the sewage flows into the limiting cylinder 2 from the water inlet 8, so that the water level in the limiting cylinder 2 is kept at the same height as the sewage tank 1 in real time, so that the buoy 3 can float up in time.

[0028] Reference Figure 1 as well as Figure 2 In this embodiment, a plurality of ventilation holes 9 are opened on the top wall of the limiting cylinder 2.

[0029] When the sewage completely submerges the water inlet 8, the sewage continues to flow into the limiting cylinder 2, causing the air in the limiting cylinder 2 to be squeezed. The squeezed air may not be able to flow out from the periphery of the movable column 4 in time. The setting of the vent hole 9 allows the compressed air to be discharged from the vent hole 9 in time, which is beneficial to maintaining the air pressure in the limiting cylinder 2.

[0030] Reference Figure 1 as well as Figure 2 In this embodiment, the buoy 3 is spherical, and the diameter of the buoy 3 is equal to the diameter of the limiting cylinder 2.

[0031] The buoy 3 is restricted to a spherical shape, and the inner wall of the restriction cylinder 2 restricts the left and right swing of the buoy 3, so that the buoy 3 can only slide along the height direction of the restriction cylinder 2, and at the same time reduce the contact area between the buoy 3 and the inner wall of the restriction cylinder 2, thereby reducing the restriction of the buoy 3 on the sewage entering the bottom of the restriction cylinder 2, making it easier for the sewage to flow into the bottom of the restriction cylinder 2, so that the sewage water level in the restriction cylinder 2 can be fed back more timely.

[0032] Reference Figure 1 as well as Figure 2 In the present embodiment, the metal contact block 5 is hemispherical, the conducting plate 6 is an arc plate, the center and diameter of the two conducting plates 6 are the same, the bottom walls of the two conducting plates 6 are inclined surfaces approaching each other, the distance from the side where the two conducting plates 6 are approaching each other to the top of the limiting cylinder 2 is greater than the distance from the side where the conducting plates 6 are away from each other to the top of the limiting cylinder 2, and when the metal contact block 5 abuts against the conducting plate 6, the spherical surface of the metal contact block 5 abuts against the inclined surface of the conducting plate 6.

[0033] After sewage flows into the limiting cylinder 2, it drives the metal contact block 5 to rise. The spherical surface of the metal contact block 5 can serve as a guide surface and a transition surface for the metal contact block 5 to slide between the two conducting plates 6, thereby reducing the situation where the metal contact block 5 and the conducting plates 6 collide with each other and cause damage or deformation to one of them. When there is a misalignment between the metal contact block 5 and the interval space between the two conducting plates 6, the arc surface of the metal contact block 5 serves as a guide surface to enable the metal contact block 5 to slide to face the gap between the conducting plates 6, so that the metal contact block 5 can connect the two conducting plates 6 more promptly, so that the feedback of the water being full in the sewage tank 1 is more timely.

[0034] Reference Figure 1 as well as Figure 2 In this embodiment, a spacer column 10 is integrally connected to the side of the metal contact block 5 away from the spherical surface, and a limiting ring 11 is provided at one end of the spacer column 10 away from the metal contact block 5. The movable column 4 is hollow and a limiting groove 12 is provided on the inner wall. The limiting ring 11 is clamped in the limiting ring 11.

[0035] When processing the movable column 4, the movable column 4 is initially injection molded into two half cylinders, and after the limiting ring 11 of the metal contact block 5 is clamped into the semi-circular limiting groove 12 of one of the cylinders, the other half cylinder is combined and glued to the other half cylinder to complete the assembly. When the movable column 4 is corroded or damaged, the movable column 4 and the metal contact can be repaired or replaced separately, thereby reducing the maintenance cost of the floor scrubber.

[0036] Reference Figure 1 as well as Figure 2 In this embodiment, a receiving seat 13 is provided on the bottom wall of the limiting cylinder 2 . When the bottom of the buoy 3 abuts against the receiving seat 13 , the metal contact block 5 is still located outside the guide cylinder 7 .

[0037] When there is less sewage in the limiting cylinder 2, the buoy 3 slides down to abut against the receiving seat 13, reducing the metal contact block 5 on the top of the buoy 3 from sliding down into the limiting cylinder 2 along with the buoy 3, causing the metal contact block 5 to be misaligned with the inner circumference of the guide cylinder 7, thereby making it difficult for the metal contact block 5 to extend from the guide cylinder 7.

[0038] Reference Figure 1 as well as Figure 2 In this embodiment, the side of the receiving seat 13 close to the buoy 3 is a concave spherical surface. When the buoy 3 abuts against the receiving seat 13, the spherical surface of the receiving seat 13 fits with the spherical surface of the buoy 3.

[0039] The setting of the spherical surface is beneficial to increasing the supporting area of ​​the receiving seat 13 and the buoy 3, and reducing the wear of the receiving seat 13 caused by long-term single-point force.

[0040] The above are all preferred embodiments of the present utility model, and are not intended to limit the protection scope of the present utility model. Therefore, any equivalent changes made based on the structure, shape, and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A water full feedback structure for a floor scrubber, characterized in that: The invention comprises a limiting cylinder (2) arranged in a sewage tank (1), a buoy (3) being arranged in the limiting cylinder (2), the top end of the limiting cylinder (2) being open and slidably connected with a movable column (4), the movable column (4) being connected with the buoy (3), the top end of the movable column (4) being provided with a metal contact (5), the top of the sewage tank (1) being provided with two conducting plates (6), a spacing being left between the two conducting plates (6), a PCB board for controlling the floor scrubber being arranged in the floor scrubber, a sounding module being arranged on the PCB board, when the metal contact (5) is in contact with both the conducting plates (6), the conducting plates (6) are electrically connected with the metal contact (5), the sounding module is started and a prompt sound is emitted.

2. The water full feedback structure of the floor scrubber according to claim 1, characterized in that: The top end of the limiting cylinder (2) is integrally connected with a guide cylinder (7), the movable column (4) is slidably connected to the guide cylinder (7), and the inner diameter of the guide cylinder (7) is equal to the outer diameter of the movable column (4).

3. The water full feedback structure of the floor scrubber according to claim 2, characterized in that: The limiting cylinder (2) is arranged vertically, and a water inlet hole (8) is penetrated through the side wall of the bottom end of the limiting cylinder (2), and the length direction of the water inlet hole (8) is consistent with the height direction of the limiting cylinder (2).

4. The water full feedback structure of the floor scrubber according to claim 3, characterized in that: The top wall of the limiting cylinder (2) is provided with a plurality of ventilation holes (9).

5. The water full feedback structure of the floor scrubber according to claim 2, characterized in that: The buoy (3) is spherical, and the diameter of the buoy (3) is equal to the diameter of the limiting cylinder (2).

6. The water full feedback structure of the floor scrubber according to claim 5, characterized in that: The metal contact (5) is hemispherical, the conduction plate (6) is an arc plate, the two conduction plates (6) have the same center and diameter, the bottom walls of the two conduction plates (6) are inclined surfaces approaching each other, the distance from the side of the two conduction plates (6) approaching each other to the top of the limiting cylinder (2) is greater than the distance from the side of the two conduction plates (6) away from each other to the top of the limiting cylinder (2), and when the metal contact (5) abuts against the conduction plate (6), the spherical surface of the metal contact (5) abuts against the inclined surface of the conduction plate (6).

7. The water full feedback structure of the floor scrubber according to claim 6, characterized in that: A spacer column (10) is integrally connected to the side of the metal contact (5) away from the spherical surface, and a limiting ring (11) is provided at one end of the spacer column (10) away from the metal contact (5). The movable column (4) is hollow and has a limiting groove (12) on its inner wall. The limiting ring (11) is clamped in the limiting ring (11).

8. The water full feedback structure of the floor scrubber according to claim 5, characterized in that: The bottom wall of the limiting cylinder (2) is provided with a receiving seat (13). When the bottom of the buoy (3) abuts against the receiving seat (13), the metal contact block (5) is still located outside the guide cylinder (7).

9. The water full feedback structure of the floor scrubber according to claim 8, characterized in that: The side of the receiving seat (13) close to the buoy (3) is a concave spherical surface, and when the buoy (3) abuts against the receiving seat (13), the spherical surface of the receiving seat (13) fits with the spherical surface of the buoy (3).

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