CN218391006U - Sewage tank water level detection device and floor cleaning machine - Google Patents

Abstract

The embodiment of the utility model provides a sewage tank water level detection device and floor washing machine, which comprises a first detection piece, a second detection piece, a third detection piece, a fourth detection piece and springs, wherein the springs are arranged on a host and are connected with the first detection piece, the second detection piece, the third detection piece and the fourth detection piece in a one-to-one correspondence manner; the second detection piece comprises a first boss, a first conductive pin and a second conductive pin, the first boss is arranged on the outer side wall of the sewage tank, the first ends of the first conductive pin and the second conductive pin are both positioned on the outer side of the sewage tank, and the second ends of the first conductive pin and the second conductive pin are positioned on the inner side of the sewage tank; when the sewage tank is arranged on the host machine, the first boss abuts against the third elastic sheet to compress the spring to form conduction; the first ends of the first conductive pin and the second conductive pin are respectively abutted against the first elastic sheet and the second elastic sheet, and when water in the sewage tank is simultaneously contacted with the first conductive pin and the second conductive pin, conduction is formed. The sewage tank water level detection device can reduce the water contact with the sewage tank, the detection structure is more reliable in connection, and the problem of response failure is solved.

Description

Sewage tank water level detection device and floor cleaning machine

Technical Field

The utility model belongs to the technical field of floor cleaning machine, especially, relate to a sewage case water level detection device and floor cleaning machine.

Background

At present, the sewage tank of the floor washing machine in the market mostly uses an embedded sensing structure, for example, the Chinese patent with the authorization publication number of CN215502799U discloses a water full detection device of the sewage tank of the floor washing machine and the floor washing machine, and the sewage tank of the detection device is provided with the embedded sensing structure to sense the water full condition. However, the embedded sensing structure is not protected at all, and sensing failure can be caused by excessive touch of water in the sewage tank or by poor contact of the sensing structure. Most of the existing general embedded sensing structures are mechanical or micro-switch type, and the sensing structures can also fail due to the fact that no secondary contact protection is provided, and switch mechanical faults are generated. Meanwhile, the existing floor washing machine has no in-place detection after the sewage tank is connected with the host machine.

SUMMERY OF THE UTILITY MODEL

In view of the above problems existing in the prior art, an object of the embodiments of the present invention is to provide a sewage tank detection device and a floor cleaning machine. The problem that sewage case water level detection became invalid has been solved to the liquid level of accurate detection sewage case, and structural connection is reliable, solves the inefficacy problem that leads to because of contact failure.

The embodiment of the utility model provides a technical scheme who adopts is, a sewage case water level detection device for floor cleaning machine, floor cleaning machine include the host computer, locate the control panel in the host computer and the detachable sewage case of locating on the host computer, and sewage case water level detection device includes:

the first detection piece is arranged on the host and comprises a first elastic sheet, a second elastic sheet, a third elastic sheet, a fourth elastic sheet and springs in one-to-one correspondence connection with the elastic sheets, and each elastic sheet is electrically connected with the control panel;

the second detection piece comprises a first boss, a first conductive needle and a second conductive needle, the first boss is arranged on the outer side wall of the sewage tank, the first conductive needle and the second conductive needle penetrate through the side wall of the sewage tank respectively, the first end of the first conductive needle and the first end of the second conductive needle are both positioned on the outer side of the sewage tank, and the second end of the first conductive needle and the second end of the second conductive needle are both positioned on the inner side of the sewage tank;

when the sewage tank is arranged on the host, the first boss abuts against the third elastic sheet and compresses the spring corresponding to the third elastic sheet, so that the third elastic sheet is in contact with and conducted with the fourth elastic sheet; the first end of the first conductive pin and the first end of the second conductive pin are respectively abutted to the first elastic sheet and the second elastic sheet, and when water in the sewage tank rises to be simultaneously contacted with the first conductive pin and the second conductive pin, the first conductive pin and the second conductive pin are conducted. The sewage tank water level detection device of the embodiment can detect the in-place position of the sewage tank and the limited water level; the first detection piece can be protected, the contact with water in the sewage tank is avoided, and the problem of induction failure caused by excessive contact with water is solved; and first detection piece and second detection piece are connected closely, guarantee the connectivity, improve the problem of the response inefficacy that leads to because of contacting badly.

In some embodiments, the elastic sheet includes a cylinder and a first conductive sheet, the first conductive sheet extends outwards along the outer circumference of the cylinder, one end of the spring extends into the cylinder and is connected with the cylinder, and the first conductive sheet is electrically connected with the control panel. Thus, the reliability of the connection can be ensured.

In some embodiments, the third elastic piece and the fourth elastic piece further include a second conductive plate, respectively, and the second conductive plate of the third elastic piece is located above the second conductive plate of the fourth elastic piece and is configured to contact the second conductive plate of the fourth elastic piece, so that the third elastic piece and the fourth elastic piece are conducted. The third elastic sheet can be in contact with the fourth elastic sheet to form a connection loop.

In some embodiments, the first conductive pins and the second conductive pins are the same height. The liquid level at this level can be set to a limit height.

In some embodiments, the first detecting member further includes a spring clip, each spring is elastically connected to the first surface of the spring clip through a spring, and the second surface of the spring clip, which is away from the first surface, is fixedly connected to the host. The function of connecting host computer and each spring and fixed first detection piece is played.

In some embodiments, the second detecting element further includes a needle cover, a mounting opening is disposed on a side wall of the waste water tank, the needle cover covers the mounting opening, a second boss and a second groove are respectively formed on opposite surfaces of the needle cover, the second boss faces the waste water tank, the second groove faces the outside of the waste water tank, the first boss is disposed on a bottom of the second groove, and the first conductive pin and the second conductive pin are respectively disposed through the second boss and the second groove. The reliable gapless connection between the sewage tank and the host can be guaranteed, the first boss can be guaranteed to abut against the third elastic sheet, and the conductive pin can contact the elastic sheet.

In some embodiments, the wastewater tank water level detecting device further comprises a fixing cover, wherein the fixing cover is sleeved on the root part of the second boss and is fixedly connected with the periphery of the assembling opening. The function of fixing and sealing the needle cover and the side wall of the sewage tank is achieved.

In some embodiments, the edge of the fitting opening of the waste water tank is provided in a stepped structure, and the small-diameter end of the step faces the inside of the waste water tank, and the outer edge of the stationary cover and the outer edge of the needle cover respectively fall on and are fixedly connected to the step. Further improving the sealing function between the sewage tank and the side wall of the sewage tank.

In some embodiments, the device for detecting the water level in the sewage tank further comprises an isolation cover, the isolation cover is located in the sewage tank, the second boss blocks a cover opening of the isolation cover, a through hole for communicating the inside of the sewage tank with the inside of the isolation cover is formed in the isolation cover, and the second end of the first conductive pin and the second end of the second conductive pin penetrate through the second boss and extend into the isolation cover. Through setting up the cage, can play the dirty effect with the foam of keeping apart the sewage case, effectively solve because of the probe inefficacy problem that dirty, foam etc. too much arouse.

In some embodiments, an isolation structure is arranged in the isolation cover, the isolation structure divides an inner cavity of the isolation cover into two mutually independent accommodating cavities, the second end of the first conductive pin and the second end of the second conductive pin are respectively located in different accommodating cavities, and through holes are respectively arranged on the walls of the two accommodating cavities. Dirt, foam and the like can be better prevented from entering the accommodating cavity.

A floor washing machine comprises a host, a control panel arranged in the host, a sewage tank detachably arranged on the host and a sewage tank water level detection device. The floor washing machine has the function of the sewage tank water level detection device due to the fact that the floor washing machine is provided with the sewage tank water level detection device, and can achieve in-place detection, water level detection and the like of the sewage tank.

Compared with the prior art, the utility model discloses sewage case water level detection device and scrubber's beneficial effect lies in: the first detection piece is arranged on the host, the second detection piece is partially positioned on the outer side of the sewage tank, and the second detection piece is partially positioned on the inner side of the sewage tank, so that the contact part of the first detection piece and the second detection piece is positioned on the outer side of the sewage tank, the contact with water in the sewage tank is avoided, and the problem of induction failure caused by multiple contact of water is solved. The contact of first detection piece and second detection piece adopts the structural connection of shell fragment and spring, through the elastic force effect of spring, makes between the shell fragment and is connected closely between shell fragment and the first boss, connects more reliably, improves the problem of the response inefficacy that leads to because of contact failure. The in-place detection of the connection of the sewage tank to the host can be carried out through the matching of the first detection piece and the second detection piece.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention as claimed.

The summary of various implementations or examples of the technology described in this disclosure is not a comprehensive disclosure of the full scope or all of the features of the disclosed technology.

Drawings

In the drawings, which are not necessarily drawn to scale, like reference numerals may describe similar components in different views. Like reference numerals having alphabetic suffixes or different alphabetic suffixes may represent different instances of similar components. The drawings illustrate various embodiments, by way of example and not by way of limitation, and together with the description and claims, serve to explain the embodiments of the invention. The same reference numbers will be used throughout the drawings to refer to the same or like parts, where appropriate. Such embodiments are illustrative and not intended to be exhaustive or exclusive embodiments of the present apparatus or method.

Fig. 1 is a side overall structure diagram of the host and the sewage tank of the embodiment of the present invention after being disassembled.

Fig. 2 is a schematic front structural view of the host and the sewage tank in an embodiment of the present invention after being disassembled.

Fig. 3 is a schematic view of a back structure of the host and the sewage tank according to the embodiment of the present invention after being disassembled.

Fig. 4 is a schematic sectional view of a floor washing machine according to an embodiment of the present invention.

Fig. 5 is a schematic sectional view of a water level detecting device for a wastewater tank according to an embodiment of the present invention.

Fig. 6 is a schematic structural view of the first detecting member according to the embodiment of the present invention.

Fig. 7 is an exploded view of a first detecting member according to an embodiment of the present invention.

Fig. 8 is a sectional view of a view angle of a wastewater tank according to an embodiment of the present invention.

Fig. 9 is a sectional view of another perspective of the sump according to an embodiment of the present invention.

Fig. 10 is a schematic view of a view angle of the needle cover according to an embodiment of the present invention.

Fig. 11 is a schematic structural view of another view angle of the needle cover according to the embodiment of the present invention.

Fig. 12 is a schematic view of a viewing angle of the fixing cover according to the embodiment of the present invention.

Fig. 13 is a schematic structural diagram of another view angle of the fixing cover according to the embodiment of the present invention.

Fig. 14 is a schematic view of a view angle of a shielding case according to an embodiment of the present invention.

Fig. 15 is a schematic structural diagram of another view angle of the isolation cover according to the embodiment of the present invention.

Reference numerals are as follows:

1-a host; 2-a sewage tank; 3-a first elastic sheet; 4-a second elastic sheet; 5-a third elastic sheet; 6-a fourth elastic sheet; 7-a spring; 8-control panel; 9-a first boss; 10-a first conductive pin; 11-a second conductive pin; 12-a cylinder body; 13-a first conductive sheet; 14-a second conductive sheet; 15-spring plate buckle; 16-a needle cover; 17-a second boss; 18-a second groove; 19-a fixed cover; 20-a shielding case; 21-a through hole; 22-a containment chamber; 23-limiting plate.

Detailed Description

In order to make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, the accompanying drawings of the embodiment of the present invention are combined below to clearly and completely describe the technical scheme of the embodiment of the present invention. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. All other embodiments, which can be obtained by a person skilled in the art without any inventive work based on the described embodiments of the present invention, belong to the protection scope of the present invention.

Unless defined otherwise, technical or scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the description herein do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

To maintain the following description of the embodiments of the present invention clear and concise, detailed descriptions of well-known functions and components may be omitted.

As shown in fig. 1 to 6, the embodiment of the utility model provides a sewage tank water level detection device for floor cleaning machine, floor cleaning machine include host computer 1, locate control panel 8 in host computer 1 and detachable sewage tank 2 of locating on host computer 1. The wastewater tank water level detection device includes a first detection member and a second detection member. The first detection piece is arranged on the host 1 and comprises a first elastic sheet 3, a second elastic sheet 4, a third elastic sheet 5, a fourth elastic sheet 6 and a plurality of springs 7 which are respectively connected with the elastic sheets in a one-to-one correspondence manner. Each spring is electrically connected with the control board 8. The second detecting member includes a first boss 9, a first conductive pin 10, and a second conductive pin 11. The first boss 9 is arranged on the outer side wall of the sewage tank 2, the first conductive pin 10 and the second conductive pin 11 are respectively arranged on the side wall of the sewage tank 2 in a penetrating manner, the first end of the first conductive pin 10 and the first end of the second conductive pin 11 are both positioned on the outer side of the sewage tank 2, and the second end of the first conductive pin 10 and the second end of the second conductive pin 11 are both positioned on the inner side of the sewage tank 2. When the sewage tank 2 is arranged on the host 1, the first boss 9 presses the third elastic sheet 5 and compresses the spring 7 corresponding to the third elastic sheet 5, so that the third elastic sheet 5 is contacted and conducted with the fourth elastic sheet 6. The first end of the first conductive pin 10 and the first end of the second conductive pin 11 are respectively abutted against the first spring plate 3 and the second spring plate 4, and when the water in the sewage tank 2 rises to be simultaneously contacted with the first conductive pin 10 and the second conductive pin 11, the first conductive pin 10 and the second conductive pin 11 are conducted.

As shown in fig. 1, the main body 1 and the sewage tank 2 are detachably connected, so that the sewage can be conveniently poured out after the water in the sewage tank 2 reaches a certain water level. As shown in fig. 2, the first detecting member is mounted on the main body 1, the second detecting member is mounted on the sewage tank 2, but the first boss 9 of the second detecting member is located outside the sewage tank 2, and the first conductive pin 10 and the second conductive pin 11 are partially located outside the sewage tank 2 and partially located inside the sewage tank 2, so that they can cooperate with the elastic piece to be conducted, and then send out a signal. Set up like this and can protect first detection piece, avoid with the water contact in the sewage case 2, improve because too much and lead to the problem of response inefficacy with water touch.

As shown in fig. 5 to 6, after the sewage tank 2 is installed in place, the first boss 9 of the second detecting member abuts against the third resilient sheet 5, the third resilient sheet 5 compresses the spring 7 correspondingly connected thereto, and the third resilient sheet 5 displaces to make the third resilient sheet 5 contact with and conduct with the fourth resilient sheet 6, so that a loop is formed between the third resilient sheet 5, the fourth resilient sheet 6 and the control board 8, and a signal that the sewage tank 2 is in place can be output. Otherwise, if no signal is received, the control panel 8 can prompt an alarm to indicate that the scrubber is inoperable.

After the sewage tank 2 is mounted on the main body 1, the first end of the first conductive pin 10 abuts against the first elastic sheet 3, and the first end of the second conductive pin 11 abuts against the second elastic sheet 4. After the water in the sewage tank 2 reaches a certain water level, when the water simultaneously contacts the second ends of the first conductive pin 10 and the second conductive pin 11, the control board 8, the first elastic sheet 3, the first conductive pin 10, the water, the second conductive pin 11 and the second elastic sheet 4 form a conductive loop, so that a signal reaching the limited water level can be output. The control panel 8 can prompt an alarm and stop the floor washing machine.

Through the tight connection structure of spring 7 and shell fragment, after shell fragment compression spring 7, spring 7 gives the shell fragment a reverse acting force, and the contact between shell fragment and first boss 9 and the conductive pin is inseparabler like this, guarantees the connectivity, improves the problem of the response inefficacy that leads to because of contacting badly.

As shown in fig. 6 and 7, the elastic sheet includes a barrel 12 and a first conductive sheet 13, the first conductive sheet 13 extends outward along the outer periphery of the barrel 12, one end of the spring 7 extends into the barrel 12 and is connected to the barrel 12, and the first conductive sheet 13 is electrically connected to the control board 8. The barrel 12 part of shell fragment has groove structure, and the one end of spring 7 can stretch into in the barrel 12 with barrel 12 fixed connection, makes barrel 12 can compress spring 7, connects more stably. The first conducting strip 13 is connected with the cylinder 12, when the cylinder 12, the first conducting strip 13 and the control panel 8 are connected, the first conducting strip 13 and the control panel 8 can be connected through wires.

As shown in fig. 6 and 7, the third elastic sheet 5 and the fourth elastic sheet 6 further include a second conductive plate 14, and the second conductive plate 14 of the third elastic sheet 5 is located above the second conductive plate 14 of the fourth elastic sheet 6 and is configured to contact with the second conductive plate 14 of the fourth elastic sheet 6, so that the third elastic sheet 5 is connected to the fourth elastic sheet 6. The second conductive sheets 14 of the third elastic sheet 5 and the fourth elastic sheet 6 are vertically arranged, and when the third elastic sheet 5 compresses the spring 7 correspondingly connected with the third elastic sheet, the second conductive sheet 14 of the third elastic sheet 5 moves downwards and can contact the second conductive sheet 14 of the fourth elastic sheet 6 to form a connection loop.

In some embodiments, the first and second conductor pins 10 and 11 have the same height. The first conductive pin 10 and the second conductive pin 11 can be simultaneously brought into contact with water at the same height to conduct. This height can be set as a limit height for the liquid level. If the heights of the first conductor pin 10 and the second conductor pin 11 are different, the water level in contact with the conductor pin at a higher position may be set to a limit height.

As shown in fig. 6 and 7, the first detection member further comprises an elastic sheet buckle 15, each elastic sheet is elastically connected to the first surface of the elastic sheet buckle 15 through a spring 7, and the second surface of the elastic sheet buckle 15 deviating from the first surface is fixedly connected with the host 1. The elastic sheet buckle 15 is used for connecting the host 1 with the springs 7 and fixing the first detection piece.

As shown in fig. 5, a limiting plate 23 is disposed on the host 1, and the first elastic sheet 3, the second elastic sheet 4, and the third elastic sheet 5 respectively penetrate through the limiting plate 23. The limiting plate 23 plays a role in limiting the first elastic sheet 3, the second elastic sheet 4 and the third elastic sheet 5.

As shown in fig. 8, 9, 10 and 11, the second detecting member further includes a needle cover 16, a mounting opening is formed on a side wall of the waste water tank 2, the needle cover 16 covers the mounting opening, and a second boss 17 and a second groove 18 are formed on opposite plate surfaces of the needle cover 16. The second boss 17 faces the inside of the foul water tank 2 and the second groove 18 faces the outside of the foul water tank 2. The first boss 9 is disposed on the bottom of the second groove 18, and the first conductive pin 10 and the second conductive pin 11 are respectively disposed through the second boss 17 and the second groove 18.

The needle cover 16 itself forms a second boss 17 and a second groove 18, the second groove 18 faces the outside of the waste water tank 2, and the needle cover 16 is covered on the mounting opening so that the second groove 18 is spaced from the outer contour line of the side wall of the waste water tank. The first boss 9 is arranged at the bottom of the second groove 18, the first ends of the first conductive pins 10 and the second conductive pins 11 are arranged outside the sewage tank 2, so that a space is reserved for the arrangement of the first boss 9, the first conductive pins 10 and the second conductive pins 11, when the sewage tank 2 is arranged on the host 1, reliable gapless connection between the sewage tank 2 and the host 1 can be guaranteed, the first boss 9 can be guaranteed to abut against the third elastic sheet 5, and the conductive pins can contact the elastic sheets.

As shown in fig. 8, 12 and 13, the wastewater tank water level sensing apparatus further includes a fixing cover 19, and the fixing cover 19 is fitted over the root of the second boss 17 and is fixedly connected to the periphery of the fitting opening. The fixed cover 19 is sleeved at the root part of the second boss 17, the fixed cover 19 is also contacted with the part of the needle cover 16 except the second boss 17, the fixed cover 19 is fixedly connected with the needle cover 16 and the periphery of the assembly opening, and the fixed cover 19 plays a role in fixing and sealing the needle cover 16 and the side wall of the sewage tank 2.

As shown in fig. 8, the edge of the fitting opening of the foul water tank 2 is provided in a stepped structure with the small diameter end of the step facing the inside of the foul water tank 2, and the outer edge of the fixed cover 19 and the outer edge of the needle cover 16 respectively fall on and are fixedly coupled with the step. The second boss 17 of the needle cover 16 can extend into the inner side of the step, and the needle cover 16 and the fixed cover 19 are fixedly connected with the step, so that the sealing effect between the needle cover and the side wall of the sewage tank 2 is further improved.

As shown in fig. 8, 9, 14 and 15, the device for detecting the water level in the wastewater tank further includes a shielding case 20, the shielding case 20 is located in the wastewater tank 2, the second boss 17 blocks a cover opening of the shielding case 20, a through hole 21 for communicating the inside of the wastewater tank 2 with the inside of the shielding case 20 is formed in the shielding case 20, and the second end of the first conductive pin 10 and the second end of the second conductive pin 11 penetrate through the second boss 17 and extend into the shielding case 20.

The cage 20 is located the sewage case 2, the cover mouth of the cage 20 is blocked by the second boss 17, an isolated space independent to the sewage case 2 is formed between the second boss 17 and the cage 20, a through hole 21 is arranged on the cage 20, so that water in the sewage case 2 can enter the isolated space, the water level communication principle is that the water level in the isolated space is the same as the water level of the sewage case 2, and the second end of the conductive needle is located in the isolated space, so that the detection of the water level can be realized. In addition, the isolation cover 20 can greatly improve the problem of induction failure caused by excessive induction touch or poor contact of the sewage tank 2; the device has the function of isolating the dirt and the foam of the sewage tank 2, and effectively solves the problem of probe failure caused by too much dirt and foam.

As shown in fig. 9, 12 and 13, a separation structure is disposed in the isolation cover 20, and the separation structure divides the inner cavity of the isolation cover 20 into two independent accommodating cavities 22. The second end of the first conductive pin 10 and the second end of the second conductive pin 11 are respectively located in different accommodating cavities 22, and through holes 21 communicated with the sewage tank 2 are respectively arranged on the cavity walls of the two accommodating cavities 22.

The isolation structure in the isolation cover 20 makes the first conductive pin 10 and the second conductive pin 11 contact with water in different accommodating cavities 22, and the first conductive pin 10, the dielectric water and the second conductive pin 11 form a U-shaped conduction. The water in the sewage tank 2 respectively enters the two accommodating cavities 22, and under the effect of the blocking space, the dirt and the foam can be better blocked from entering the accommodating cavities 22.

The embodiment of the utility model provides a still provide a floor cleaning machine, this floor cleaning machine includes host computer 1, locates control panel 8 in the host computer 1 and detachable sewage case 2 of locating on the host computer 1, and its floor cleaning machine still includes sewage case water level detection device. This floor scrubber is owing to have foretell sewage case water level detection device, so has sewage case water level detection device's function, can be accurate carry out sewage case water level detection, avoid water level detection inefficacy and the detection etc. that targets in place of sewage case.

The above description is intended to be illustrative, and not restrictive, and variations, modifications, substitutions, and alterations may be made to the above-described embodiments by those of ordinary skill in the art within the scope of the present disclosure. Also, the above-described examples (or one or more versions thereof) may be used in combination with each other, and it is contemplated that the embodiments may be combined with each other in various combinations or permutations.

Claims (11)

1. The utility model provides a sewage case water level detection device for floor cleaning machine, floor cleaning machine include host computer (1), locate control panel (8) in host computer (1) and detachable locating sewage case (2) on host computer (1), its characterized in that, sewage case water level detection device includes:

the first detection piece is arranged on the host (1) and comprises a first elastic piece (3), a second elastic piece (4), a third elastic piece (5), a fourth elastic piece (6) and springs (7) which are connected with the elastic pieces in a one-to-one correspondence mode, and each elastic piece is electrically connected with the control panel (8) respectively;

the second detection piece comprises a first boss (9), a first conductive pin (10) and a second conductive pin (11), the first boss (9) is arranged on the outer side wall of the sewage tank (2), the first conductive pin (10) and the second conductive pin (11) are respectively arranged on the side wall of the sewage tank (2) in a penetrating mode, the first end of the first conductive pin (10) and the first end of the second conductive pin (11) are both located on the outer side of the sewage tank (2), and the second end of the first conductive pin (10) and the second end of the second conductive pin (11) are both located on the inner side of the sewage tank (2);

when the sewage tank (2) is arranged on the host (1), the first boss (9) presses the third elastic sheet (5) and compresses the spring (7) corresponding to the third elastic sheet (5), so that the third elastic sheet (5) is in contact with and conducted with the fourth elastic sheet (6); the first end of the first conductive pin (10) and the first end of the second conductive pin (11) are respectively abutted against the first elastic sheet (3) and the second elastic sheet (4), and when the water in the sewage tank (2) rises to be simultaneously contacted with the first conductive pin (10) and the second conductive pin (11), the first conductive pin (10) is conducted with the second conductive pin (11).

2. The wastewater tank water level detection device according to claim 1, wherein the elastic sheet comprises a cylinder (12) and a first conductive sheet (13), the first conductive sheet (13) extends outwards along the outer periphery of the cylinder (12), one end of the spring (7) extends into the cylinder (12) and is connected with the cylinder (12), and the first conductive sheet (13) is electrically connected with the control board (8).

3. The wastewater tank water level detection device according to claim 2, wherein the third resilient piece (5) and the fourth resilient piece (6) further comprise a second conductive piece (14), and the second conductive piece (14) of the third resilient piece (5) is located above the second conductive piece (14) of the fourth resilient piece (6) and is used for contacting with the second conductive piece (14) of the fourth resilient piece (6) so as to conduct the third resilient piece (5) and the fourth resilient piece (6).

4. The wastewater tank water level detecting apparatus according to claim 1, wherein the first conductor pin (10) and the second conductor pin (11) have the same height.

5. The wastewater tank water level detection device according to claim 1, wherein the first detection member further comprises a spring plate fastener (15), each spring plate is elastically connected to a first surface of the spring plate fastener (15) through the spring (7), and a second surface of the spring plate fastener (15) deviating from the first surface is fixedly connected with the main unit (1).

6. The wastewater tank water level detection device according to claim 1, wherein the second detection member further comprises a needle cover (16), a mounting opening is formed on a side wall of the wastewater tank (2), the needle cover (16) covers the mounting opening, a corresponding second boss (17) and a corresponding second groove (18) are formed on opposite plate surfaces of the needle cover (16), the second boss (17) faces the inside of the wastewater tank (2), the second groove (18) faces the outside of the wastewater tank (2), the first boss (9) is arranged on a groove bottom of the second groove (18), and the first conductive pin (10) and the second conductive pin (11) are respectively inserted into the second boss (17) and the second groove (18).

7. The water level detection device according to claim 6, further comprising a fixing cover (19), wherein the fixing cover (19) is sleeved on the root of the second boss (17) and is fixedly connected with the periphery of the mounting opening.

8. The wastewater tank water level detecting apparatus according to claim 7, wherein the edge of the fitting opening of the wastewater tank (2) is provided in a stepped structure with the small diameter end of the step facing the inside of the wastewater tank (2), and the outer edge of the stationary cover (19) and the outer edge of the needle cover (16) respectively fall on and are fixedly coupled to the step.

9. The wastewater tank water level detection apparatus according to claim 6, further comprising a shield (20), wherein the shield (20) is located in the wastewater tank (2), the second boss (17) blocks a cover opening of the shield (20), a through hole (21) for communicating the inside of the wastewater tank (2) with the inside of the shield (20) is formed in the shield (20), and the second end of the first conductive pin (10) and the second end of the second conductive pin (11) penetrate through the second boss (17) and extend into the shield (20).

10. The wastewater tank water level detection device according to claim 9, wherein an isolation structure is arranged in the isolation cover (20), the isolation structure divides the inner cavity of the isolation cover (20) into two independent accommodating cavities (22), the second ends of the first conductive pins (10) and the second ends of the second conductive pins (11) are respectively arranged in different accommodating cavities (22), and the through holes (21) are respectively arranged on the cavity walls of the two accommodating cavities (22).

11. A floor washing machine comprising a main machine (1), a control panel (8) arranged in the main machine (1) and a sewage tank (2) detachably arranged on the main machine (1), characterized in that the floor washing machine further comprises the sewage tank water level detection device of any one of claims 1-10.

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