Device structure for automatic opening and closing of the sewage tank valve of a cleaning machine

Abstract

The present invention discloses a device structure for automatically opening and closing a valve in a sewage tank of a cleaning machine, comprising a cleaning machine body, a water-gas separation chamber provided on the top of the cleaning machine body, a sewage tank detachably mounted on the bottom of the cleaning machine body, one end of the water-gas separation chamber connected to a water pumping pipe, the other end of the water-gas separation chamber connected to a main motor with a suction function, a drain outlet provided at the bottom of the water-gas separation chamber, a sewage tank inlet provided at the top of the sewage tank, the drain outlet downwardly communicating with the sewage tank inlet, the sewage tank inlet cooperating with a water shut-off valve, the water shut-off valve connected to a drive device, the drive device capable of driving the water shut-off valve to open and close the sewage tank inlet, the drive device connected to a main control board via a wire, and the main motor connected to the main control board via a wire. The present invention has a reasonable structural design and can effectively prevent sewage stored in the sewage tank from flowing back out through the sewage tank inlet.

Description

Technical Field

[0001] The present invention relates to the technical field of cleaning machines, and in particular to a device structure for automatically opening and closing a valve of a sewage tank of a cleaning machine. Background Art

[0002] Products such as handheld fabric cleaning machines (or floor and carpet cleaning machines) use a high-power suction motor to suck the dirty water on the fabric (or carpet) after being washed by a roller brush into the water-gas separation chamber through a pipe. After water-gas separation, the sewage enters the sewage tank, and the separated air is discharged out of the main body of the handheld fabric cleaning machine through the main motor (i.e., the suction motor).

[0003] Currently, all handheld fabric cleaning machines (or carpet cleaning machines) on the market do not have a dedicated valve to close the sewage tank after the water and gas separation (when the main motor is not working). As a result, the space between the sewage tank and the water and gas separation chamber is connected. In this state (the main motor is not working), the following defects will occur:

[0004] 1. Due to the convenience and flexibility of handheld devices, users do not always keep the device in a horizontal position when holding it. It may tilt forward or backward, or tilt left or right.

[0005] 2. After the user has used the handheld fabric cleaning machine (or carpet cleaning machine), the machine may tip over when placed.

[0006] When the above two phenomena occur, the sewage stored in the sewage tank will flow back through the sewage tank inlet, enter the water-gas separation chamber, enter the motor or pipe, and even enter the main body of the handheld fabric cleaning machine, and finally flow out from different parts of the main body of the handheld fabric cleaning machine, thereby causing secondary pollution. Summary of the Invention

[0007] The purpose of the present invention is to provide a device structure for automatically opening and closing the valve of a sewage tank of a washing machine, so as to solve the technical problem in the background technology that when the above two phenomena occur, the sewage stored in the sewage tank will flow back through the sewage tank inlet, enter the water-gas separation chamber, enter the motor or the pipeline, and even enter the interior of the handheld fabric washing machine body, and finally flow out from different parts of the handheld fabric washing machine body, thereby causing secondary pollution.

[0008] In order to achieve the above-mentioned purpose, the technical solution of the present invention provides a device structure for automatically opening and closing the valve of a sewage tank of a cleaning machine, comprising a cleaning machine main body, a water-gas separation chamber is provided on the top of the cleaning machine main body, and a sewage tank is detachably installed on the bottom of the cleaning machine main body, one end of the water-gas separation chamber is connected to a water pumping pipe, and the other end of the water-gas separation chamber is connected to a main motor with a suction function, a drain outlet is provided at the bottom end of the water-gas separation chamber, and a sewage tank inlet is provided at the top of the sewage tank, and the drain outlet can be downwardly connected to the sewage tank inlet; the sewage tank inlet is coordinated with a water-closing valve, and the water-closing valve is connected to a driving device, and the driving device can drive the water-closing valve to open and close the sewage tank inlet, the driving device is connected to the main control board with a wire, and the main motor is connected to the main control board with a wire.

[0009] Furthermore, a rotating shaft extending front to back is provided inside the sewage tank, and the rotating shaft is provided at the lower right side of the sewage tank inlet. The rotating shaft is movably connected to one end of the valve bracket, and the other end of the valve bracket is connected to the water shut-off valve; the driving device is connected to the valve bracket and can drive the end of the valve bracket connected to the water shut-off valve to swing up and down around the rotating shaft, so that the water shut-off valve can block upward or disengage downward from the sewage tank inlet.

[0010] Furthermore, the driving device includes a driving device body and a torsion spring. The torsion spring is arranged on the rotating shaft. The torsion spring can drive the end of the valve bracket connected to the water-closing valve to automatically swing upward around the rotating shaft, so that the water-closing valve can block the sewage tank inlet upward; the driving device body is connected to the main control board with a wire, and the driving device body can drive the end of the valve bracket connected to the water-closing valve to swing downward, so that the water-closing valve can be downwardly separated from the sewage tank inlet.

[0011] Furthermore, a through hole is provided at the top of the sewage tank, which is located to the right of the sewage tank inlet and above the valve bracket. A thimble that can move up and down is provided in the through hole; the bottom end of the thimble is pressed downward against the valve bracket, and the thimble is provided between the water shut-off valve and the rotating shaft. The driving device body is provided above the through hole, and the driving device body can drive the thimble to move downward.

[0012] Furthermore, a curved portion is provided at the bottom end of the ejector pin, and a curved surface facing upward is provided in the middle of the valve bracket, and the curved surface and the curved portion are in sliding cooperation.

[0013] Furthermore, the width of the arc-shaped portion is greater than the inner diameter of the through hole.

[0014] Furthermore, the driving device body includes a micro motor and a transmission connecting rod. The transmission connecting rod is arranged above the ejector pin. The micro motor is connected to the main control board with a wire. The micro motor can drive the transmission connecting rod to move up and down, and the transmission connecting rod can drive the ejector pin to move downward.

[0015] Furthermore, a side wall of the top end of the transmission connecting rod is provided with a gear row arranged vertically, the output shaft of the micro motor extends horizontally and is connected to the gear, and the gear is meshed with the gear row.

[0016] Furthermore, the micro motor and the transmission connecting rod are arranged inside the cleaning machine body.

[0017] Furthermore, the main motor and the main control board are arranged inside the cleaning machine body.

[0018] In summary, the technical solution of the present invention has the following beneficial effects: the structural design of the present invention is reasonable, and the sewage tank inlet is coordinated with the water-shutoff valve, the water-shutoff valve is connected to the driving device, and the driving device can drive the water-shutoff valve to open and close the sewage tank inlet. The driving device is connected to the main control board with a wire, and the main motor is connected to the main control board with a wire, so that the main motor and the driving device can work in conjunction, that is, when the main motor is working, the driving device can drive the water-shutoff valve to open the sewage tank inlet, so that the sewage in the water-gas separation chamber can enter the sewage tank, and when the main motor stops working, the driving device can drive the water-shutoff valve to close the sewage tank inlet to achieve the purpose of shutting off water, so that when the above two phenomena in the background technology occur, the water-shutoff valve can effectively prevent the sewage stored in the sewage tank from flowing back through the sewage tank inlet. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic cross-sectional view of the present invention when the water shut-off valve is closed;

[0020] Figure 2 It is a schematic cross-sectional view of the present invention when the water shut-off valve is open;

[0021] Figure 3 It is a schematic diagram of the three-dimensional structure of the sewage tank of the present invention;

[0022] Figure 4 It is along Figure 3 Schematic diagram of the cross-sectional structure obtained by cutting along the AA cutting line in FIG.

[0023] Explanation of the reference numerals: 1-cleaning machine body; 2-water-gas separation chamber, 201-drain outlet; 3-sewage tank, 301-sewage tank inlet, 302-through hole; 4-main motor, 5-water shut-off valve, 6-main control board, 7-rotating shaft; 8-valve bracket, 801-arc surface; 9-torsion spring; 10-thimble, 1001-arc portion; 11-micro motor; 12-transmission connecting rod, 1201-gear row; 13-gear. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention, but this does not constitute a limitation on the protection scope of the present invention.

[0025] In the present invention, for a clearer description, the following explanation is made: the observer faces the Figure 1 For observation, the left side of the observer is set as left, the right side of the observer is set as right, the front of the observer is set as front, the back of the observer is set as back, the top of the observer is set as top, and the bottom of the observer is set as bottom. It should be noted that the terms "front end", "rear end", "left side", "right side", "middle", "top", "bottom" and the like in the text indicate directions or positional relationships based on the directions or positional relationships set in the accompanying drawings. They are only for the convenience of clearly describing the present invention, and do not indicate or imply that the structures or components referred to must have a specific direction or be constructed in a specific direction. Therefore, they cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", and "fourth" are only used for the purpose of clarifying or simplifying the description, and cannot be understood as indicating or implying relative importance or quantity.

[0026] See also Figures 1 to 4The present embodiment provides a device structure for automatically opening and closing the valve of a sewage tank of a cleaning machine, comprising a cleaning machine body 1, a water-gas separation chamber 2 being provided on the top of the cleaning machine body 1, a sewage tank 3 being detachably mounted on the bottom of the cleaning machine body 1, one end of the water-gas separation chamber 2 being connected to a water pumping pipe (not shown in the figure), and the other end of the water-gas separation chamber 2 being connected to a main motor 4 with a suction function, a drain port 201 being provided at the bottom end of the water-gas separation chamber 2, a sewage tank inlet 301 being provided at the top end of the sewage tank 3, the drain port 201 being downwardly connected to the sewage tank inlet 301; the sewage tank inlet 301 being coordinated with a water shut-off valve 5, the water shut-off valve 5 being connected to a driving device, the driving device being able to drive the water shut-off valve 5 to open and close the sewage tank inlet 301, the driving device being connected to a main control board 6 by a wire, and the main motor 4 being connected to the main control board 6 by a wire. Function: The sewage tank inlet is connected to a shut-off valve, which is connected to a drive device. The drive device drives the shut-off valve to open and close the sewage tank inlet. The drive device is connected to the main control board via wires, and the main motor is also connected to the main control board via wires, enabling the main motor and drive device to operate in tandem. When the main motor is operating, the drive device drives the shut-off valve to open the sewage tank inlet, allowing sewage from the water-gas separation chamber to enter the tank. When the main motor is stopped, the drive device drives the shut-off valve to close the sewage tank inlet, effectively shutting off the water. This effectively prevents sewage from flowing back out of the sewage tank inlet when the two aforementioned issues occur. Explanation: Main motor operation refers to the user turning on the suction function of the main motor when using a handheld fabric cleaning machine (or carpet cleaning machine). This function draws sewage into the water-gas separation chamber through a pumping pipe, then separates the water and gas in the water-gas separation chamber before pumping the gas out of the cleaning machine. Cleaning machine refers to a handheld fabric cleaning machine or carpet cleaning machine. Sewage tank: The sewage tank on the main body of this cleaning machine is a detachable sewage tank. The user can easily remove it for cleaning.

[0027] Specifically, a rotating shaft 7 extending forward and backward is provided within the sewage tank 3. This shaft 7 is located to the lower right of the sewage tank inlet 301. The rotating shaft 7 is movably connected to one end of a valve bracket 8, the other end of which is connected to the water shutoff valve 5. A driving device is connected to the valve bracket 8 and can drive the end of the valve bracket 8, to which the water shutoff valve 5 is connected, to swing up and down around the rotating shaft 7, allowing the water shutoff valve 5 to block upward or disengage downward from the sewage tank inlet 301. This movement around the rotating shaft ensures that the valve bracket, driving the water shutoff valve, follows an accurate and stable trajectory.

[0028] Specifically, the drive device includes a drive body and a torsion spring 9. The torsion spring 9 is mounted on a rotating shaft 7. The torsion spring 9 drives the end of the valve bracket 8 connected to the water shutoff valve 5 to automatically swing upward around the rotating shaft 7, allowing the water shutoff valve 5 to block the sewage tank inlet 301. The drive body is connected to the main control board 6 by a wire. The drive body drives the end of the valve bracket 8 connected to the water shutoff valve 5 to swing downward, allowing the water shutoff valve 5 to move downward away from the sewage tank inlet 301. Function: By providing a water shutoff valve controlled by a torsion spring within the sewage tank, the torsion spring maintains a normally closed state. Whether the sewage tank is removed or installed on the main body of the cleaning machine, the water shutoff valve remains closed. The free spring arms at the ends of the torsion spring can respectively connect to the valve bracket and the inner wall of the sewage tank. Of course, other structural arrangements are also possible, as long as the torsion spring drives the end of the valve bracket connected to the water shutoff valve to automatically swing upward around the rotating shaft.

[0029] Specifically, the top of the sewage tank 3 is provided with a through-hole 302, located to the right of the sewage tank inlet 301 and above the valve support 8. A vertically movable ejector pin 10 is positioned within this through-hole 302. The bottom end of ejector pin 10 presses downward against the valve support 8. The ejector pin 10 is positioned between the water shutoff valve 5 and the rotating shaft 7. The main body of the drive device is positioned above this through-hole 302 and drives the ejector pin 10 downward. Function: By placing an ejector pin with one end resting on the valve support, the ejector pin, when subjected to force, pushes the valve support downward, thereby opening the water shutoff valve. When the ejector pin is unloaded, the torsion spring acts on the valve support, closing the water shutoff valve.

[0030] Specifically, the bottom end of the ejector pin 10 is provided with an arcuate portion 1001, and the middle of the valve support 8 is provided with an upwardly directed arcuate surface 801, which slides with the arcuate portion 1001. Function: The sliding cooperation between the arcuate portion and the arcuate surface facilitates the ejector pin to push the valve support downward.

[0031] Specifically, the width of the arc portion 1001 is greater than the inner diameter of the through hole 302. Function: This design can prevent the ejector pin from escaping from the through hole upward.

[0032] Specifically, the drive mechanism comprises a micromotor 11 and a transmission connecting rod 12. The transmission connecting rod 12 is located above the ejector pin 10 and is connected to the main control board 6 by wires. The micromotor 11 drives the transmission connecting rod 12 up and down, which in turn drives the ejector pin 10 downward. Function: When the sewage tank is removable, the micromotor drives the transmission connecting rod. When the transmission connecting rod is applied with force to the ejector pin, the ejector pin is applied with force to the valve bracket, opening the water shut-off valve. When the force applied to the ejector pin by the transmission connecting rod is removed, the torsion spring closes the water shut-off valve. The micromotor is linked to the main motor: when the main motor is operating, the micromotor applies force to the transmission connecting rod, opening the valve. When the main motor stops, the micromotor reverses its operation, removing the force on the transmission connecting rod and closing the valve by the torsion spring.

[0033] Specifically, a side wall at the top of the transmission connecting rod 12 is provided with a vertically arranged tooth row 1201. The output shaft of the micro motor 11 extends horizontally and is connected to the gear 13, which meshes with the tooth row 1201. Function: The meshing action of the gear and the tooth row drives the transmission connecting rod up and down.

[0034] Specifically, the micro motor 11 and the transmission connecting rod 12 are arranged inside the cleaning machine body 1. Function: They are arranged inside to better cooperate with the ejector pin.

[0035] Specifically, the main motor 4 and the main control board 6 are arranged inside the cleaning machine body 1. Function: being arranged inside can protect the main motor and the main control board.

[0036] In actual operation: Under the control of the main control board, the main motor and micro motor work synchronously. The micro motor uses gears to drive the transmission connecting rod downward. The transmission connecting rod drives the ejector pin in the sewage tank, transmitting power to the valve bracket of the sewage tank. The sewage tank valve opens and sewage enters the sewage tank. Under the control of the main control board, the main motor stops working. At the same time, the micro motor uses gears to drive the transmission connecting rod upward. The force on the valve bracket of the sewage tank is relieved. Under the action of the torsion spring, the water shut-off valve closes, achieving the purpose of sealing the sewage tank.

[0037] In summary, the present invention has the following beneficial effects: the sewage in the sewage tank is controllable and always retained inside the tank. Regardless of the state of the cleaning machine, the sewage in the sewage tank will not flow out, preventing secondary pollution. Because the micromotor and the main motor are linked, the water shut-off valve of the sewage tank is only opened when the main motor is operating. When the main motor stops working, the water shut-off valve of the sewage tank is closed, ensuring that the sewage does not flow out in any state.

[0038] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A device structure for automatically opening and closing a valve of a sewage tank of a cleaning machine, comprising a cleaning machine body (1), characterized in that: The top of the cleaning machine body (1) is provided with a water-gas separation chamber (2), and the bottom of the cleaning machine body (1) is detachably provided with a sewage tank (3). One end of the water-gas separation chamber (2) is connected to a water pumping pipe, and the other end of the water-gas separation chamber (2) is connected to a main motor (4) with a suction function. The bottom end of the water-gas separation chamber (2) is provided with a drain port (201), and the top of the sewage tank (3) is provided with a sewage tank inlet (301). The drain port (201) can be downwardly communicated with the sewage tank inlet (301); the sewage tank inlet (301) cooperates with a water shut-off valve (5), and the water shut-off valve (5) is connected to a driving device. The driving device can drive the water shut-off valve (5) to open and close the sewage tank inlet (301). The driving device is connected to the main control board (6) by a wire, and the main motor (4) is connected to the main control board (6) by a wire. A rotating shaft (7) extending forward and backward is provided inside the sewage tank (3). The rotating shaft (7) is provided at the lower right side of the sewage tank inlet (301). The rotating shaft (7) is movably connected to one end of a valve bracket (8), and the other end of the valve bracket (8) is connected to the water shut-off valve (5). The driving device is connected to the valve bracket (8) and can drive the end of the valve bracket (8) connected to the water shut-off valve (5) to swing up and down around the rotating shaft (7), so that the water shut-off valve (5) can be blocked upward or separated downward from the sewage tank inlet (301). The driving device comprises a driving device body and a torsion spring (9), wherein the torsion spring (9) is arranged on the rotating shaft (7), and the torsion spring (9) can drive the end of the valve bracket (8) connected to the water shutoff valve (5) to automatically swing upward around the rotating shaft (7), so that the water shutoff valve (5) can block the sewage tank inlet (301) upward; the driving device body is connected to the main control board (6) by a wire, and the driving device body can drive the end of the valve bracket (8) connected to the water shutoff valve (5) to swing downward, so that the water shutoff valve (5) can be separated from the sewage tank inlet (301) downward; The top of the sewage tank (3) is further provided with a through hole (302), the through hole (302) being located to the right of the sewage tank inlet (301) and above the valve bracket (8), and a thimble (10) movable up and down is provided in the through hole (302); the bottom end of the thimble (10) is pressed downward against the valve bracket (8), the thimble (10) is provided between the water shut-off valve (5) and the rotating shaft (7), the driving device body is provided above the through hole (302), and the driving device body can drive the thimble (10) to move downward; The bottom end of the ejector pin (10) is provided with an arcuate portion (1001), and the middle of the valve support (8) is provided with an upwardly directed arcuate surface (801), and the arcuate surface (801) is in sliding engagement with the arcuate portion (1001).

2. The automatic opening and closing device structure of the sewage tank valve of a cleaning machine according to claim 1, characterized in that: The width of the arc-shaped portion (1001) is greater than the inner diameter of the through hole (302).

3. The automatic opening and closing device structure of the sewage tank valve of a cleaning machine according to any one of claims 1 to 2, characterized in that: The driving device body comprises a micro motor (11) and a transmission connecting rod (12). The transmission connecting rod (12) is arranged above the ejector pin (10). The micro motor (11) is connected to the main control board (6) by a wire. The micro motor (11) can drive the transmission connecting rod (12) to move up and down, and the transmission connecting rod (12) can drive the ejector pin (10) to move downward.

4. The automatic opening and closing device structure of the sewage tank valve of a cleaning machine according to claim 3, characterized in that: A side wall at the top end of the transmission connecting rod (12) is provided with a tooth row (1201) arranged vertically, and the output shaft of the micro motor (11) extends horizontally and is connected to the gear (13), and the gear (13) is meshed with the tooth row (1201).

5. The automatic opening and closing device structure of the sewage tank valve of a cleaning machine according to claim 4, characterized in that: The micro motor (11) and the transmission connecting rod (12) are arranged inside the cleaning machine body (1).

6. The automatic opening and closing device structure of the sewage tank valve of a cleaning machine according to any one of claims 1 to 2, 4 to 5, characterized in that: The main motor (4) and the main control board (6) are arranged inside the cleaning machine body (1).

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