CN220089386U - Liquid level detection device and sewage tank of floor washing machine - Google Patents

Abstract

The utility model belongs to the field of floor washers, and discloses a liquid level detection device and a sewage tank of the floor washer, wherein the liquid level detection device comprises a cavity and a float, the float is movably arranged in the cavity and is provided with an outwards protruding arc surface, and the float is in point contact with the cavity wall of the cavity through the arc surface. The cavity can restrict the moving range of the buoy, prevent the buoy from moving at will, thereby avoiding the influence on the accuracy of the detection of the induction control switch, when the sewage flows into the cavity, the buoy floats up and down along with the height of the water level in the cavity, and because the contact area between the buoy and the cavity wall is very small, the impurity in the sewage can be adhered or attached to the surface of the buoy or the cavity wall even if the liquid level rises or falls, the probability of the buoy being blocked in the cavity can be greatly reduced, thereby reducing the influence of the impurity in the sewage on the floating up and down in the cavity, and improving the accuracy of the liquid level detection.

Description

Liquid level detection device and sewage tank of floor washing machine

Technical Field

The utility model relates to the field of floor washers, in particular to a liquid level detection device and a sewage tank of the floor washer.

Background

The existing liquid level detection device is provided with a floating ball with a shape matching with the shape of a containing cavity, so that the floating ball can freely move in the cavity, but for matching with the shape of the cavity, the floating ball is often arranged into a short cylinder and is installed in the floating cavity, so that two end faces of the floating ball are in surface contact with the inner wall of the cavity, for example, chinese patent with an authorized bulletin number of CN217659678U discloses a sewage tank of a floor scrubber with a water level detection function.

In the sewage tank with the water level detection function disclosed in the chinese patent publication No. CN217659678U, the floating ball component is mounted on the short cylinder in the floating ball chamber, two axial end surfaces of the short cylinder are in surface contact with the wall of the floating ball chamber, and the sewage is communicated from the sewage storage chamber to the floating ball chamber to necessarily pass through the floating ball component, at this moment, sundries in the sewage are in large-area contact with the floating ball component, so that sundries are easy to adhere or adhere to the surface of the floating ball component, and the floating ball is blocked in the floating ball chamber, so that the liquid level is unchanged no matter what the position of the floating ball component is, and the result of the liquid level detection is inaccurate.

Disclosure of Invention

The utility model mainly aims to provide a liquid level detection device, and aims to solve the problem that in the prior art, a floating ball is stuck in a floating ball cavity by sundries in sewage, and cannot float, so that a liquid level detection result is inaccurate.

In order to achieve the above object, a first aspect of the present utility model provides a liquid level detection device, which includes a cavity and a float, wherein the float is movably installed in the cavity, the float is provided with an arc surface protruding outwards, and the float is in point contact with a wall of the cavity through the arc surface.

Further, the float includes a float housing and a signal transmitter mounted on a central axis of the float housing.

Further, the cavity is arranged in the water tank, the cavity is a cylinder formed by enclosing one side wall of the water tank and three side plates, and water inlet holes are formed in the bottom and/or the side surfaces of the cavity.

Further, the buoy is a sphere, and the signal transmitter is arranged at the center of the sphere.

Further, the signal transmitter is metal or magnet.

Further, the liquid level detection device further comprises an induction control switch for inducing the signal transmitter, and the induction control switch is arranged on the outer side of the water tank.

Further, the buoy is in a cake shape, and the signal transmitter is positioned at the center of the short shaft of the buoy or near one side of the induction control switch.

Further, the inductive control switch is a hall switch or an inductive proximity switch.

Further, the density of the float material is less than the density of water.

Another aspect of the utility model provides a floor scrubber sewage tank comprising a liquid level detection device as described in any one of the preceding claims.

The beneficial effects are that:

the liquid level detection device comprises a cavity and a buoy, wherein the buoy is movably arranged in the cavity, the buoy is provided with an outwards protruding arc-shaped surface, and the buoy is in point contact with the cavity wall of the cavity through the arc-shaped surface. The cavity can restrict the moving range of the buoy, prevent the buoy from moving at will, thereby avoiding the influence on the accuracy of the detection of the induction control switch, when the sewage flows into the cavity, the buoy is free to float up and down along with the height of the water level in the cavity, and because the buoy is in point contact with the cavity wall, the contact area of the buoy and the cavity wall is very small, even if sundries in the sewage are adhered or attached to the surface of the buoy or the cavity wall when the liquid level rises or falls, the probability of the buoy being blocked in the cavity can be greatly reduced, thereby reducing the influence of the sundries in the sewage on the floating up and down in the cavity, and improving the accuracy of the liquid level detection.

Drawings

FIG. 1 is a front view of an embodiment of the present utility model;

FIG. 2 is a block diagram of a float of the present utility model;

FIG. 3 is a front view of an embodiment of the present utility model;

FIG. 4 is a block diagram of a chamber of the present utility model;

wherein: 1-a cavity; 2-floating; 3-a float shell; 4-a signal transmitter; 5-a water tank; 6-a water inlet hole.

The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element 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. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present utility model, the meaning of "a plurality" is two or more, unless specifically defined otherwise.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; the connection may be mechanical connection, direct connection or indirect connection through an intermediate medium, and may be internal connection of two elements or interaction relationship of two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

Referring to fig. 1, an embodiment of the present utility model provides a liquid level detection apparatus, where the liquid level detection apparatus includes a cavity 1 and a float 2, where the float 2 is movably installed in the cavity 1, the float 2 is provided with an arc surface protruding outwards, and the float 2 is in point contact with a cavity wall of the cavity 1 through the arc surface.

In the above embodiment, the cavity 1 can limit the movement range of the float 2, and prevent the float 2 from moving at will, so that the accuracy of the detection of the induction control switch can be prevented from being affected. When sewage flows into the cavity 1, the float 2 floats up and down along with the height of the water level in the cavity 1, and as the contact area between the float 2 and the cavity wall is very small, impurities in the sewage can be greatly reduced even if the impurities are adhered or attached to the surface of the float 2 or the cavity wall when the liquid level rises or falls, the probability of the float being blocked in the cavity 1 is also greatly reduced, thereby reducing the influence of the impurities in the sewage on the floating of the float 2 up and down in the cavity, and also improving the accuracy of liquid level detection.

Optionally, the float 2 comprises a float housing 3 and a signal transmitter 4, the signal transmitter 4 being mounted on the central axis of the float housing 3. The float casing 3 may be sealed, and the signal transmitter 4 is fixed at a central position inside the float casing 3; the float shell 3 can also be open, and the signal transmitter 4 is installed in the outside axis department of float shell 3, and the purpose is the weight balance that makes cursory 2, reduces the possibility that rolls in water, avoids influencing signal transmission's stability.

Optionally, the cavity 1 is disposed in the water tank 5, the cavity 1 is a column surrounded by a side wall and three side panels of the water tank 5, and a water inlet 6 is disposed at the bottom and/or the side of the cavity 1. The cavity 1 can be a cylinder or a polygon prism such as a cuboid, a cube and the like, and the bottom and/or the side surface of the cavity is provided with a water inlet 6, so that the water level can flow into the cavity when the water level is low, the buoy 2 floats, and the range of the liquid level to be detected is enlarged.

Optionally, the float 2 is a sphere, and the signal transmitter 4 is disposed at a center of the sphere. The buoy 2 is arranged into a sphere shape, so that the buoy 2 can be conveniently taken out from and put into the cavity, the signal transmitter 4 is arranged at the center of the sphere, so that the center of gravity of the buoy 2 can be stabilized, and the stability of signals is not easy to be influenced by overturning.

Optionally, the signal transmitter 4 is a metal or a magnet. The signal transmitter 4 is a metal, a magnet or other component capable of stably emitting a signal.

Optionally, the liquid level detection device further comprises an induction control switch for inducing the signal transmitter 4, and the induction control switch is arranged outside the water tank 5. In practical application, the induction control switch is electrically connected with a main circuit board of the floor washing machine. Therefore, the induction control switch can send out corresponding instructions to the main circuit board to control the starting or stopping of the floor washing machine. When the liquid level rises or falls, the buoy 2 floats upwards or falls, the distance between the signal transmitter 4 in the buoy 2 and the induction control switch changes, and the induction control switch senses the strength of the signal so as to control the water level. Specifically: when the liquid level rises, the float 2 floats upwards, the induction control switch inducts and receives a signal sent by the signal sender 4 in the float, and sends an instruction to the floor washer, and the floor washer gives an alarm or stops working and controls the water tank 5 not to add water any more; when the sewage pouring liquid level falls, the buoy 2 falls, the induction control switch inducts and receives signals sent by the signal transmitter 4 in the buoy, and after the floor washing machine receives instructions, the floor washing machine can continue to start working according to requirements, and the like, and sewage can be continuously sucked into the sewage tank of the floor washing machine at the moment.

Optionally, the float 2 is in a shape of a cake, and the signal transmitter 4 is located at the center of the short axis of the float 2 or near one side of the induction control switch. The signal transmitter 4 is arranged at the center of the short axis of the cake and can be more stable but sense relatively weaker, and the signal sensing can be stronger when being arranged near one side of the sensing control switch.

Optionally, the inductive control switch is a hall switch or an inductive proximity switch. When the magnet is adopted as the signal transmitter 4, the induction control switch adopts the Hall switch to be matched with the magnet, and when the magnet moves close to the Hall switch, the existence of the magnet nearby is identified, and then the on or off of the Hall switch is controlled; when the metal is used as the signal transmitter 4, the inductive control switch is matched with the metal by adopting the inductive proximity switch, and when the metal moves close to the inductive proximity switch, the existence of the metal nearby is identified, and then the on or off of the inductive proximity switch is controlled.

Optionally, the density of the material of the float 2 is less than the density of water. The material density of the float 2 is smaller than that of water, and the float 2 can slightly float on the surface of sewage and freely float up and down along with the change of the liquid level.

Another aspect of the utility model provides a floor scrubber sewage tank comprising the liquid level detection device of any one of the embodiments. The sewage flows into the cavity 1 from the sewage box of the floor washing machine, and the float 2 freely floats up and down along with the height of the water level in the cavity 1, and because the contact area between the float 2 and the cavity wall is very small, impurities in the sewage are adhered or attached to the surface of the float 2 or the cavity wall when the liquid level rises or falls, the probability of the float being blocked in the cavity 1 is greatly reduced, and thus the influence of the impurities in the sewage on the floating up and down of the float 2 in the cavity 1 is reduced, and the accuracy of liquid level detection is improved. When the liquid level rises to a certain degree, the induction control switch sends out an instruction, the floor washing machine sends out an alarm or stops working after receiving the instruction, and the floor washing machine does not add water into the sewage tank any more so as to avoid water overflow in the sewage tank; when the sewage pouring liquid level is lowered and the buoy 2 falls to a certain extent, the induction control switch sends out an instruction, and after receiving the instruction, the floor washing machine can continuously start working according to the requirement, and the like, and at the moment, sewage can be continuously sucked into the sewage tank of the floor washing machine.

The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes using the descriptions and drawings of the present utility model or directly or indirectly applied to other related technical fields are included in the scope of the utility model.

Claims (10)

1. The utility model provides a liquid level detection device, its characterized in that, liquid level detection device includes cavity, cursory movable mounting is in the cavity, cursory is equipped with outwards convex arcwall face, cursory passes through arcwall face and the chamber wall point contact of cavity.

2. The liquid level detection device of claim 1, wherein the float comprises a float housing and a signal transmitter mounted on a central axis of the float housing.

3. The liquid level detection device according to claim 1, wherein the cavity is arranged in the water tank, the cavity is a column body formed by enclosing one side wall of the water tank and three side plates, and water inlet holes are formed in the bottom and/or the side surfaces of the cavity.

4. The liquid level detection apparatus according to claim 2, wherein the float is a sphere, and the signal transmitter is disposed at a center of the sphere.

5. The fluid level detection apparatus of claim 2, wherein the signal transmitter is a metal or a magnet.

6. A liquid level detection apparatus as claimed in claim 3, further comprising an inductive control switch for the inductive signal transmitter, the inductive control switch being disposed outside the tank.

7. The liquid level detecting device according to claim 6, wherein the float is in a shape of a cake, and the signal transmitter is located at a center of the short shaft of the float or at one end of both ends of the short shaft near the induction control switch.

8. The liquid level detection device of claim 6, wherein the inductive control switch is a hall switch or an inductive proximity switch.

9. The fluid level detection apparatus of claim 2, wherein the density of the float material is less than the density of water.

10. A waste bin for a floor scrubber, comprising a liquid level detection device as claimed in any one of claims 1 to 9.