CN220104245U - Liquid level detection device, sewage tank with same and cleaning equipment - Google Patents

Abstract

The utility model discloses a liquid level detection device, which comprises a floater and a floater accommodating part, wherein the floater can move in the vertical direction in the floater accommodating part; the float includes an upper portion movable within the float receiving portion and a lower portion extending to one side such that an included angle is formed between the upper portion and the lower portion. When the liquid level detection device inclines towards the extending direction of the lower part, the lower part is vertical to the horizontal plane, the acting force of liquid on the floater is vertical, and other component forces cannot be generated. The utility model also discloses a sewage tank comprising the liquid level detection device and cleaning equipment comprising the sewage tank.

Description

Liquid level detection device, sewage tank with same and cleaning equipment

Technical Field

The utility model relates to the technical field of cleaning equipment, in particular to a liquid level detection device, a sewage tank with the liquid level detection device and cleaning equipment.

Background

With the rise of living standard, auxiliary cleaning devices for household sanitary cleaning have been developed, and these cleaning devices can reduce the amount of labor paid by users in household cleaning, and thus are widely favored by the current society.

The float of the sewage tank of the existing cleaning equipment is of a straight plate type structure, when the sewage tank is inclined, the acting force of sewage in the tank body on the float can generate inclined component force due to the inclination of the float, so that the requirement of a liquid level detection device can be met only by the float with a larger size.

Disclosure of Invention

In view of the shortcomings of the prior art, one of the purposes of the present utility model is to provide a liquid level detection device, wherein a float of the liquid level detection device comprises an upper portion and a lower portion, the lower portion extends towards one side so that an included angle is formed between the upper portion and the lower portion, when the liquid level detection device is inclined towards the extending direction of the lower portion, the lower portion is perpendicular to a horizontal plane, the acting force of liquid on the float is in a vertical state, other component forces can not be generated, and compared with a straight-plate type float in the prior art, the bent-type float can achieve the same buoyancy effect as the straight-plate type float through a smaller size.

In order to achieve the above purpose, the technical means adopted by the utility model are as follows: a liquid level detection device includes a float and a float accommodating portion in which the float is movable in a vertical direction; the float includes an upper portion movable within the float receiving portion and a lower portion extending to one side such that an included angle is formed between the upper portion and the lower portion.

Wherein when the liquid level detecting device is inclined toward the extending direction of the lower portion, the lower portion is perpendicular to the horizontal plane. When the user does not use the cleaning device, the sewage tank is in an upright state, the upper part is in an upright state vertical to the horizontal plane, and the lower part inclines towards the user; when the user uses the cleaning device, the sewage tank is in an inclined state, the upper part is in an inclined state, the lower part is in an upright state perpendicular to the horizontal plane, the acting force of water in the sewage tank on the floater is in an upright state, and other component force cannot be generated. Compared with the straight plate type floats, the bent type floats can achieve the same buoyancy effect as the straight plate type floats through smaller size, so that the actual capacity of the sewage tank is increased.

The float comprises a float body, wherein an upper clamping part and a lower clamping part are arranged on the float body along the vertical direction, a moving groove is arranged on the float accommodating part, the moving groove extends along the vertical direction, and the upper clamping part and the lower clamping part can move in the moving groove along the vertical direction; the movable groove is provided with a clamping groove extending along the horizontal direction, and when the sewage tank is inclined, the upper clamping part is deviated into the clamping groove.

The upper clamping part is cylindrical, and the clamping groove is an arc-shaped groove, so that the upper clamping part can be easily released from the clamping groove when the floater floats upwards under the action of buoyancy.

Wherein the width of the float receiving chamber is greater than the width of the float such that the float can deflect within the float receiving chamber. If the width of the inner cavity of the float accommodating part is the same as the width of the float, the upper clamping part cannot deviate into the clamping groove when the liquid level detection device is inclined.

The distance between the clamping groove and the lower end of the moving groove is identical with the distance between the upper clamping part and the lower clamping part. At this time, when the lower clamping part is located at the lowest part of the moving groove of the float accommodating part, the upper clamping part and the clamping groove are located at the same horizontal plane, and the liquid level detection device is inclined, the upper clamping part is deviated into the clamping groove under the action of gravity of the float, and if the distance between the clamping groove and the lower end of the moving groove is smaller than the distance between the upper clamping part and the lower clamping part, the inclination of the liquid level detection device cannot be realized, and then the upper clamping part is deviated into the clamping groove under the action of gravity of the float.

Another object of the present utility model is to provide a sewage tank, comprising a tank body, a tank cover and the liquid level detecting device. The box body is used for storing dirt sucked by the cleaning equipment; the box cover is detachably connected to the box body, and a suction port is arranged on the box cover; the liquid level detection device is positioned in the sewage tank and used for detecting the liquid level in the tank body, wherein the liquid level detection device is any one of the liquid level detection devices.

The box body comprises a box body with a containing cavity and a liquid inlet pipe extending into the containing cavity from the bottom end of the box body, and a groove is arranged at the lower part for the liquid inlet pipe to pass through.

The sewage tank further comprises a solid-liquid separation device, one end of the solid-liquid separation device is hinged with the float accommodating part, so that the solid-liquid separation device can rotate relative to the float accommodating part, and solid dirt in the solid-liquid separation device can be conveniently dumped.

It is a further object of the present utility model to provide a cleaning apparatus comprising the above-described sump, and the sump is detachably mounted to the cleaning apparatus.

The beneficial effects of the utility model are as follows: the float of the liquid level detection device comprises an upper part and a lower part, wherein the lower part extends towards one side to form an included angle between the upper part and the lower part, when the liquid level detection device inclines towards the extending direction of the lower part, the lower part is vertical to the horizontal plane, the acting force of liquid on the float is in a vertical state at the moment, other component forces are not generated, and compared with the straight-plate type float in the prior art, the bent type float can achieve the effect of buoyancy identical to that of the straight-plate type float through a smaller size.

Drawings

FIG. 1 is a schematic diagram of a cleaning apparatus 1000 according to an embodiment of the present utility model;

fig. 2 is a schematic structural view of a sewage tank 100 according to an embodiment of the present utility model;

fig. 3 is a cross-sectional view of a sewage tank 100 according to an embodiment of the present utility model;

fig. 4 is a sectional view of the liquid level detecting means 130 and the solid-liquid separating means 140 when the float 131 is at the bottommost end and the sewage tank 100 is in an upright state according to an embodiment of the present utility model;

fig. 5 is a schematic structural view of the liquid level detecting means 130 and the solid-liquid separating means 140 when the float 131 is at the bottommost end and the sewage tank 100 is in an upright state according to an embodiment of the present utility model;

fig. 6 is a sectional view of the liquid level detecting means 130 and the solid-liquid separating means 140 when the float 131 is at the bottommost end and the sewage tank 100 is in an inclined state according to an embodiment of the present utility model;

fig. 7 is a schematic structural view of the liquid level detecting means 130 and the solid-liquid separating means 140 when the float 131 is at the bottommost end and the sewage tank 100 is in an inclined state according to an embodiment of the present utility model;

FIG. 8 is a cross-sectional view showing a connection structure between the liquid level detecting apparatus 130 and the solid-liquid separating apparatus 140 according to an embodiment of the present utility model;

fig. 9 is a schematic diagram showing a connection structure between the liquid level detecting device 130 and the solid-liquid separating device 140 according to an embodiment of the present utility model.

Detailed Description

As required, specific embodiments of the present utility model will be disclosed herein. However, it is to be understood that the embodiments disclosed herein are merely exemplary of the utility model, which may be embodied in various forms. Therefore, specific details disclosed herein are not to be interpreted as limiting, but merely as a basis for the claims and as a representative basis for teaching one skilled in the art to variously employ the present utility model in virtually any appropriately manner, including employing the various features disclosed herein in connection with features that may not be explicitly disclosed.

In the description of the present utility model, it should be understood that the terms "length," "upper," "lower," "front," "rear," "left," "right," "horizontal," "top," "bottom," "inner," "outer," "circumferential," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present utility model and simplify description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In an embodiment of the present utility model, the cleaning apparatus 1000 includes, but is not limited to, a washer, a floor scrubbing robot, and the like. Taking the cleaning apparatus 1000 as an example of a cleaning machine as in fig. 1, a sump 100 is included. The suction motor operates to generate negative pressure, and the function of collecting dirt is achieved by the floor brush, and the dirt is collected into the sewage tank 100, so that the surface to be cleaned can be kept dry. The surface to be cleaned includes a floor, a carpet surface, a sofa surface, etc., and for simplicity of description, the floor will be described as an example.

As shown in connection with fig. 2 and 3, the sump 100 includes a housing 110 for storing the dirt sucked by the cleaning apparatus 1000; the tank cover 120 is detachably connected to the tank body 110, a suction port 121 is formed in the tank cover 120, air in the sewage tank 100 is sucked out through the suction port 121, so that a pressure difference exists between the sewage tank 100 and the external atmospheric pressure, and sewage can be sucked into the sewage tank 100 in a negative pressure state; a liquid level detecting device 130, located in the sewage tank 100, for detecting the liquid level in the tank 110; the liquid level detection device 130 includes a float 131 and a float accommodating portion 132, the float 131 being movable in a vertical direction within the float accommodating portion 132. In this embodiment, the liquid level detecting device 130 is detachably connected to the case cover 120 and extends into the case body 110, so that the liquid level detecting device 130 can be replaced and installed conveniently.

As shown in fig. 3, in one embodiment, the tank 110 includes a tank body having a receiving cavity and a liquid inlet pipe 111 extending from a bottom end of the tank body into the receiving cavity. Dirt such as sewage enters the sewage tank 100 through the inlet pipe 111.

In the present embodiment, the float 131 is located below the suction port 121, and the float 131 may block the suction port 121. The float 121 floats up with the rise of the water level in the sewage tank 100, and finally blocks the suction port 121, so that the suction motor is blocked, heats up until the current suddenly changes, and the system can detect the current suddenly changes to prompt the user that the sewage tank 100 is full of water. In other embodiments, a sensor may be added to the liquid level detection device, and a float may be disposed below the sensor, so that the liquid level detection may be performed by using the movement of the sensor and the float. For example, the sensor is a magnetic sensor, and is installed in the case lid, and at this time, a magnetic part is provided above the float, and the magnetic part may be a permanent magnet or a magnet, and the float may be made of a low-density material, such as foamed plastic, etc., and the density of the float is smaller than that of water, and when the water level in the case is low, the float is located at the bottom of the float accommodating part, and the float may move upward along the float accommodating part as the liquid level rises. When the magnetic part approaches the magnetic signal sensor, the magnetic signal sensor can be triggered by the magnetic part and send out a signal indicating the position of the magnetic part at the moment, namely the liquid level at the moment. In particular, the magnetic signal sensor may be a hall sensor or a reed switch device. Or the sensor is a photoelectric sensor and emits a light beam towards the floater, the floater blocks the light beam and reflects part of the light back, the receiving end of the photoelectric sensor can receive the light reflected by the floater, when the water level in the box body is low, the floater is positioned at the bottom of the floater accommodating part, the receiving end of the photoelectric sensor needs a long time to receive the light reflected by the floater, the floater can move upwards along the floater accommodating part along with the rising of the liquid level, the time of the receiving end of the photoelectric sensor receiving the light reflected by the floater is reduced, and when the time reaches a set threshold value, the cleaning equipment can be controlled to stop running.

As shown in fig. 4 and 5, the upper and lower clamping parts 1311 and 1312 are provided on the float 131 in the vertical direction, the moving groove 1321 is provided on the float accommodating part 132, the moving groove 1321 extends in the vertical direction, and the upper and lower clamping parts 1311 and 1312 are movable in the vertical direction in the moving groove 1321; as shown in fig. 6 and 7, the moving slot 1321 is extended along the horizontal direction to form a clamping slot 1322, when the user uses the cleaning apparatus 1000, the sewage tank 100 is inclined, the liquid level detecting device 130 in the sewage tank 100 is inclined accordingly, and the float 131 is inclined upwards under the influence of gravity, so that the upper clamping portion 1311 is deviated into the clamping slot 1322, and a limiting effect is achieved, so that the float 131 is not easy to be sucked by suction to block the suction port 121, and an alarm phenomenon caused by that actual water is not full is avoided.

Specifically, the upper clamping portion 1311 is cylindrical, and the clamping groove 1322 is an arc groove, so that the upper clamping portion 1311 can be easily released from the clamping groove 1322 when the float 131 floats upwards under the buoyancy force.

The inner wall of the float accommodating portion 132 encloses an inner cavity of the float accommodating portion 132, and the float 131 is located in the inner cavity of the float accommodating portion 132. The width of the inner cavity of the float receiving portion 132 is greater than the width of the float 131 so that the float 131 may be biased within the float receiving portion 132. If the width of the inner cavity of the float accommodating portion 132 is the same as the width of the float 131, the upper engagement portion 1311 cannot be shifted into the engagement groove 1322 when the liquid level detecting device 130 is tilted.

The distance between the locking groove 1322 and the lower end of the moving groove 1321 is identical to the distance between the upper locking portion 1311 and the lower locking portion 1312. At this time, when the lower clamping portion 1312 is located at the lowest position of the moving groove 1321 of the float accommodating portion 132, the upper clamping portion 1311 and the clamping groove 1322 are located at the same horizontal plane, and the liquid level detecting device 130 is tilted, the upper clamping portion 1311 is biased into the clamping groove 1322 under the gravity action of the float 131, and if the distance between the clamping groove 1322 and the lower end of the moving groove 1321 is smaller than the distance between the upper clamping portion 1311 and the lower clamping portion 1312, the tilting of the liquid level detecting device 130 cannot be realized, and then the upper clamping portion 1311 is biased into the clamping groove 1322 under the gravity action of the float 131.

In an embodiment, the float 131 is detachably connected to the float accommodating portion 132, specifically, as shown in fig. 4, the upper clamping portion 1311 and the lower clamping portion 1312 are both cylindrical, the bottom of the float accommodating portion 132 has an opening with a comparable width to allow the upper clamping portion 1311 and the lower clamping portion 1312 to pass through, the cylindrical upper clamping portion 1311 and the lower clamping portion 1312 are convenient for passing through the opening at the bottom of the float accommodating portion 132, and the bottom of the moving slot 1321 has a limiting portion, so that the lower clamping portion 1312 can be clamped in the moving slot 1321 and the upper clamping portion 1311 and the lower clamping portion 1312 can be prevented from falling off from the moving slot 1321 under the condition of receiving a small external force, and the upper clamping portion 1311 and the lower clamping portion 1312 pass through the limiting portion in an interference fit manner. In other embodiments, other clamping structures may be used, and only one possible solution is given here, without specific limitation. Each angle of the limiting part of the movable slot 1321 is made into an R angle, so that interference fit is facilitated.

As shown in fig. 6 and 7, in one embodiment, the float 131 includes an upper portion 1313 and a lower portion 1314, the upper portion 1313 being movable within the float receiving portion 132, the upper and lower snap-in portions 1311, 1312 each being located on the upper portion 1313, the lower portion 1314 extending to one side such that an included angle is formed between the upper portion 1313 and the lower portion 1314. As shown in fig. 4 and 5, when the user does not use the cleaning apparatus 1000, the sewage tank 100 is in an upright state in which the upper portion 1313 is in an upright state perpendicular to the horizontal plane, and the lower portion 1314 is inclined toward the user's use side; as shown in fig. 6 and 7, when the user uses the cleaning apparatus 1000, the sewage tank 100 is in an inclined state, and at this time, the upper portion 1313 is in an inclined state, the lower portion 1314 is in an upright state perpendicular to the horizontal plane, and the force of the water in the sewage tank 100 to the float 131 is in an upright state, and other force components are not generated. The bent type float can achieve the same buoyancy effect as the straight type float by a smaller size compared to the straight type float, thereby increasing the actual capacity of the sewage tank 100. In one embodiment, the included angle is obtuse, which matches the height and usage habits of most users to ensure that the lower portion 1314 is in an upright position during use by the users. As shown in connection with fig. 3 and 5, a recess 1315 is provided in the lower portion 1314 for passage of the inlet tube 111.

In one embodiment, the sewage tank 100 further includes a solid-liquid separation device 140, and one end of the solid-liquid separation device 140 is hinged to the float accommodating portion 132, so that the solid-liquid separation device 140 can rotate relative to the float accommodating portion 132, so as to facilitate dumping of the solid dirt in the solid-liquid separation device 140.

Specifically, as shown in fig. 8 and 9, an open receiving groove 1323 is provided at the outer side of the float receiving portion 132, and a protrusion 141 is provided at one end of the solid-liquid separation device 140, and the protrusion 141 is placed in the open receiving groove 1323 such that the solid-liquid separation device 140 can rotate with respect to the float receiving portion 132. In the present embodiment, the open receiving groove 1323 is a U-shaped groove, and the protrusion 141 can be easily engaged into the open receiving groove 1323 from above the U-shaped groove or taken out of the open receiving groove 1323, so that the solid-liquid separation device 140 can be easily detached from and attached to the float receiving portion 132. The protrusion 141 may rotate in the open receiving groove 1323 with the protrusion 141 as an axis, thereby driving the solid-liquid separation device 140 to rotate with the protrusion 141 as an axis. In other embodiments, the float receiving portion and the solid-liquid separation device may be connected in a closed hinge manner, and the connection is more stable.

The other end of the solid-liquid separation device 140 is engaged with the float accommodating portion 132, specifically, a locking groove 1324 is provided on the float accommodating portion 132, a locking block 142 is provided at a relative position of the solid-liquid separation device 140, and the locking block 142 can be inserted into the locking groove 1324 so that the solid-liquid separation device 140 and the float accommodating portion 132 remain relatively fixed. In other embodiments, the other end of the solid-liquid separator may be engaged with the case cover, and the engagement method is not limited.

As shown in fig. 5, the outer wall of the solid-liquid separation device 140 is provided with a handle 143, so as to improve the operation experience of the user for disassembling the solid-liquid separation device 140, the user pulls the solid-liquid separation device 140 towards one side after holding the handle 143, the clamping block 142 on the solid-liquid separation device 140 is separated from the clamping groove 1324 on the float accommodating portion 132 under the action of external force, at this time, the solid-liquid separation device 140 is partially separated from the float accommodating portion 132 and partially hinged with the float accommodating portion 132, and further, when the hinged portion adopts the open accommodating groove 1323, the solid-liquid separation device 140 can be completely separated from the float accommodating portion 132, so that the solid-liquid separation device 140 can be cleaned independently, and the dirt in the solid-liquid separation device 140 can be conveniently dumped.

In the present embodiment, the liquid level detection device 130 is provided on the case cover 120, and the liquid level detection device 130 can be taken out when the case cover 120 is taken out, so that the solid-liquid separation device 140 connected to the liquid level detection device 130 can be taken out, and the solid-liquid separation device 140 can be flushed without dirtying hands. In addition, since the handle 143 is arranged on the outer wall of the solid-liquid separation device 140, the solid-liquid separation device 140 can be taken out by taking the box cover 120, and then the outer surface of the solid-liquid separation device 140 is washed, especially the handle 143, when the handle 143 is held at this time, the handle 143 is in a clean state, and compared with the prior art, the solid-liquid separation device is directly taken out from the sewage box, and the experience of a user is better when the structural scheme of the utility model is adopted.

As shown in fig. 3 and 5, the solid-liquid separation device 140 includes a mounting hole 144, a bottom plate 145, and a side plate 146, the mounting hole 144 is disposed on the bottom plate 145, the lower end of the side plate 146 is connected to the outer edge of the bottom plate 145, and a plurality of water leakage holes 147 are disposed on the bottom plate 145, and the mounting hole 144 is provided for the liquid inlet pipe 111 to pass through. A portion of the side plate 146 abuts the float receiving portion 132 to facilitate connection of the boss 141 with the open receiving slot 1323. The side plate 146 can be provided with a plurality of water leakage holes 147 to improve the efficiency of solid-liquid separation. The sewage and other dirt flows through the liquid inlet pipe 111 first through the solid-liquid separation device 140, and after the solid dirt is filtered out by the solid-liquid separation device 140, the liquid dirt flows into the bottom of the sewage tank 100.

The float 131 of the liquid level detecting device 130 of the present utility model includes an upper portion 1313 and a lower portion 1314, the lower portion 1314 extends toward one side such that an included angle is formed between the upper portion 1313 and the lower portion 1314, when the liquid level detecting device 130 is inclined toward the extending direction of the lower portion 1314, the lower portion 1314 is perpendicular to the horizontal plane, and at this time, the force of the liquid on the float 131 is in a vertical state, no other component force is generated, and compared with the straight-plate type float in the prior art, the bent-type float can achieve the same buoyancy effect as the straight-plate type float by a smaller size.

While the present disclosure and features have been described above with respect to specific embodiments, it will be appreciated that those skilled in the art, upon attaining the teachings of the present disclosure, may readily devise numerous variations and modifications of the above-described structures and materials, including combinations of features that are individually disclosed or claimed herein, and obviously other combinations of such features. Such variations and/or combinations fall within the technical field to which the utility model relates and fall within the scope of the claims of the utility model.

Claims (10)

1. A liquid level detection device, characterized in that: comprises a float and a float accommodating portion, wherein the float can move in the vertical direction in the float accommodating portion;

the float includes an upper portion movable within the float receiving portion and a lower portion extending to one side such that an included angle is formed between the upper portion and the lower portion.

2. The fluid level detection apparatus of claim 1, wherein: when the liquid level detection device is inclined toward the extending direction of the lower portion, the lower portion is perpendicular to the horizontal plane.

3. The fluid level detection apparatus of claim 1, wherein: an upper clamping part and a lower clamping part are arranged on the floater along the vertical direction, a moving groove is arranged on the floater accommodating part, the moving groove extends along the vertical direction, and the upper clamping part and the lower clamping part can move in the moving groove along the vertical direction; the movable groove is provided with a clamping groove extending along the horizontal direction, and when the liquid level detection device is inclined, the upper clamping part is deviated into the clamping groove.

4. A liquid level detection apparatus as claimed in claim 3, wherein: the upper clamping part is cylindrical, and the clamping groove is an arc-shaped groove.

5. The fluid level detection apparatus of claim 1, wherein: the float receiving portion has a width greater than a width of the float such that the float may deflect within the float receiving portion.

6. A liquid level detection apparatus as claimed in claim 3, wherein: the distance between the clamping groove and the lower end of the moving groove is consistent with the distance between the upper clamping part and the lower clamping part.

7. A sewage tank, its characterized in that: comprising the following steps:

the box body is used for storing dirt sucked by the cleaning equipment;

a case cover detachably connected to the case body;

a liquid level detection device, located in the sewage tank, for detecting the liquid level in the tank, wherein the liquid level detection device is as claimed in any one of claims 1-6.

8. The sewer tank of claim 7, wherein: the box comprises a box body with a containing cavity and a liquid inlet pipe extending from the bottom end of the box body into the containing cavity, and a groove is formed in the lower portion for the liquid inlet pipe to pass through.

9. The sewer tank of claim 7, wherein: the sewage tank further comprises a solid-liquid separation device, and one end of the solid-liquid separation device is hinged with the float accommodating part, so that the solid-liquid separation device can rotate relative to the float accommodating part.

10. A cleaning apparatus, characterized in that: a tank comprising a tank according to any of the preceding claims 7-9, said tank being detachably mounted on said cleaning apparatus.