A sealing structure for the pipeline of a floor washer

Abstract

The present invention relates to a sealing structure for the pipeline of a floor washer. In this sealing structure for the pipeline of the floor washer, the top of the sewage tank has an air outlet, and the air guide housing is arranged downstream of the sewage tank along the fluid flow direction and has a diversion pipe for conveying the fluid. The sealing between the inlet of the air guide housing and the air outlet of the sewage tank is achieved through an annular seal. The two ends of the seal respectively adopt the sealing forms of an embedded groove and a flanging. When docking with the air guide housing, the embedded groove is used to seal the inlet of the diversion pipe, and when sealing the sewage tank, the flanging with a larger contact surface is used for surface sealing. Flexible sealing methods are adopted for different structures, achieving a good sealing effect and being very practical.

Description

Technical Field

[0001] The present invention relates to the field of household cleaning tools, in particular to a floor scrubber, and in particular to a sealing structure for a pipeline of a floor scrubber. Background Art

[0002] With the advancement of home cleaning technology, household cleaning equipment has become increasingly diverse, and more and more cleaning equipment has entered thousands of households. However, traditional vacuum cleaners have certain usage limitations. The structural design and sealing of their components can only meet the requirements of dry environments, but not wet environments. In wet environments, the wastewater carried by the suction airflow will inevitably penetrate into the motor due to the negative pressure. Once water enters the motor through the gaps in the motor casing, it can easily cause the motor to fail and be damaged.

[0003] Clearly, cleaning machines that only absorb dust but not water cannot meet consumer demand. To this end, some companies have developed floor scrubbers that can be used in both dry and wet environments. In particular, improvements have been made to the dust collection bucket of the floor scrubber to better separate wet and dry waste, thereby preventing moisture from flowing toward the negative pressure source. For example, Chinese invention patent application number CN202010568160.1 (publication number CN111820816A) discloses a "Water Machine Wet and Dry Dual-Purpose Sewage Tank Assembly." The assembly features a sewage inlet pipe at the bottom of the sewage tank, a filter assembly positioned within the tank and sleeved onto the pipe, and a tank cover assembly mounted on the tank. After the mixed fluid passes through the sewage tank, the liquid and solids remain in the tank, while the airflow continues to flow toward the negative pressure source downstream. An air outlet is provided at the end of the floor scrubber's air path, i.e., on the housing of the fan module in the floor scrubber, through which the airflow drawn in by the negative pressure is ultimately discharged.

[0004] Although the above-mentioned sewage tank can achieve fluid separation, after the airflow leaves the sewage tank, there is no specially designed sealing component, which can easily cause lighter dust particles to accumulate in the fuselage, making it difficult to clean. Summary of the Invention

[0005] The first technical problem to be solved by the present invention is to provide a sealing structure for a floor scrubber pipeline that effectively realizes fluid sealing between an air guide housing and a sewage tank in response to the current status of the existing technology.

[0006] The second technical problem to be solved by the present invention is to provide a sealing structure for a floor scrubber pipeline that prevents the seal from turning outward, in view of the current status of the existing technology.

[0007] The technical solution adopted by the present invention to solve the first technical problem is: the sealing structure for the pipeline of the floor scrubber comprises:

[0008] A sewage tank for containing the fluid inhaled by the floor scrubbing module, with an air outlet at its top;

[0009] An air guiding housing arranged downstream of the sewage tank along the flow direction of the fluid;

[0010] The air guiding housing has a guiding pipe for conveying the fluid, and the inlet of the guiding pipe is docked at the air outlet;

[0011] It further includes:

[0012] A seal, in a ring shape, sealingly connected between the air outlet and the inlet of the guiding pipe, including a groove for embedding with the lower edge of the guiding pipe and a flange for sealing the air outlet. The groove is opened on one end wall of the seal, and the flange is arranged on the other end wall of the seal.

[0013] In order to ensure that when the seal is sealed with the sewage tank, the flange can effectively fit on the upper surface of the sewage tank to achieve surface sealing and have a sufficient sealing area. Preferably, the seal includes a body, and the lower edge of the body extends laterally to form the flange, and there is a gap between the flange and the bottom surface of the body to form a buffer groove.

[0014] Preferably, the projection of the groove on the plane where the buffer groove is located at least partially overlaps with the buffer groove. With such an overlapping design of the groove and the buffer groove, the vertical force during the installation of the groove can be applied to the buffer groove from the upper side, combined with the force exerted by the flange itself on the buffer groove, which can play a superimposed role in the two seals of the seal; at the same time, due to the different opening directions of the buffer groove and the groove, for the seal itself, the combined external forces at the two places will further cause the seal to have a tendency to shrink inward, that is, after installation, with the help of the installation force, the seal can be tightened at the bottom of the guiding pipe to avoid falling off or fluid leakage caused by loose fitting.

[0015] Preferably, along the axial direction of the seal, the flange is arranged to incline outward from top to bottom. With such an inclined design of the flange, under the negative pressure inside the floor scrubbing machine body, due to the pressure difference inside and outside, the flange will be pulled inward and move towards the body direction, thus making the seal more tight.

[0016] Specifically, the groove is opened on the upper end wall of the seal, and the lower end wall of the guiding pipe is correspondingly provided with an annular flange adapted to the groove.

[0017] In order to further solve the above second technical problem, the technical solution adopted by the present invention is: a connecting wall is formed by locally fixedly connecting between the flange and the body.

[0018] Specifically, the outer wall surface of the connecting wall is arranged to incline inward from top to bottom.

[0019] To avoid carrying lighter particles in the fluid, preferably, the sewage tank includes a cover body and a box body with an open top. The cover body is covered at the open part, and the air outlet is opened at the top of the cover body. Moreover, a filter grille is provided at the air outlet, and the sealant is hermetically surrounded around the periphery of the filter grille.

[0020] The installation of the cover body can have various forms. Preferably, the cover body includes a top plate and side edges extending downward from the circumference of the top plate. In the state where the cover body is covered at the open part, the side edges are embedded in the inner edge of the open part, and a slag basket capable of supporting the bottom of the side edges is further provided in the box body.

[0021] To ensure that droplets do not stay on the inner side of the top plate, preferably, the top plate is arranged to slope downward from one side to the other side, and the lower end wall corresponding to the diversion pipe has an inclined structure matching the top plate.

[0022] Compared with the prior art, the advantages of the present invention are as follows: In the sealing structure for the pipeline of the floor washer, the seal between the inlet of the air guide housing and the air outlet of the sewage tank is achieved through an annular sealant. The two ends of the sealant respectively adopt the sealing forms of an embedded groove and a flanging. When docking with the air guide housing, the embedded groove is used to seal the inlet of the diversion pipe, and when sealing the sewage tank, the flanging with a larger contact surface is used for surface sealing. Flexible sealing methods are adopted for different structures, achieving a good sealing effect and being very practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic diagram of the overall structure of the floor washer in the embodiment of the present invention;

[0024] Figure 2 is a schematic diagram of the overall body in the embodiment of the present invention;

[0025] Figure 3 is a schematic diagram of the overall air guide housing in the embodiment of the present invention;

[0026] Figure 4 is Figure 2 a cross-sectional view from another angle;

[0027] Figure 5 is a schematic diagram of the first angle of the sealant;

[0028] Figure 6 is a schematic diagram of the second angle of the sealant;

[0029] Figure 7 is a schematic diagram of the third angle of the sealant;

[0030] Figure 8 is a disassembled schematic diagram of the sewage tank in the embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] The present invention will be further described in detail below in conjunction with the embodiments with reference to the accompanying drawings.

[0032] As Figures 1 to 8 shown, it is a preferred embodiment of the present invention. In this embodiment, the sealing structure for the pipeline of the floor washer includes a sewage tank 25, a wind guide housing 3, and a seal 4. The floor washer mentioned here generally includes a floor brush module 01 and a body 11. Among them, the body 11 has two vertically arranged mounting openings 111 at the rear side in the advancing direction of the floor brush module. The clean water tank 14 is installed in the upper mounting opening 111, and the sewage tank 25 is installed in the lower mounting opening 111.

[0033] The sewage tank 25 in this embodiment is used to hold the fluid inhaled by the floor brush module 01, and its top has an air outlet 2a. The design of the sewage tank 25 here is for separating dust and liquid in different forms inhaled by the floor brush module 01. It specifically includes a cover body 21 and a box body 250 with an open top 200. The cover body 21 is covered at the open top 200, and the air outlet 2a is opened at the top of the cover body 21. And in order to facilitate the entry of the fluid, an inlet pipe 22 is also provided in the box body 250, and a slag basket 23 that can support the bottom of the side 212 is also provided in the box body 250. After the fluid enters the box body 22 from the inlet pipe 22, the solids are intercepted by the slag basket 23, the liquid is temporarily stored at the bottom of the inner cavity of the box body 250, and the gas continues to be discharged downstream from the air outlet 2a of the sewage tank 25. In this embodiment, the above-mentioned cover body 21 includes a top plate 211 and a side 212 extending downward from the circumference of the top plate 211. In the state where the cover body 21 is covered at the open top 200, the side 212 is embedded in the inner edge of the open top 200 and supported on the top of the above-mentioned slag basket 23.

[0034] In this embodiment, in order to further ensure the smooth export of the air flow, the above-mentioned wind guide housing 3 is arranged downstream of the sewage tank 25 along the flow direction of the fluid. The wind guide housing 3 includes a housing 31 and a diversion pipe 30 for transporting the fluid. The inlet 301 of the diversion pipe 30 is docked at the air outlet 2a. In order to prevent particles from being carried in the air flow, a filter grille 214 is provided at the air outlet 2a. And in this embodiment, the top plate 211 of the cover body 21 is arranged to slope downward from one side to the other side. In this way, even if some liquid droplets are carried by the wind force to the cover body 21, they will flow back into the box body 250 along the top plate 211. The lower end wall of the corresponding diversion pipe 30 is in an inclined structure matching the top plate 211. The negative pressure source of the fluid is a blower 12 (only the housing is shown) provided in the wind guide housing 3.

[0035] To ensure that the air flow in the sewage tank 25 can be conveyed to the air guide housing 3 via the diversion pipe 30 and prevent leakage, the above-mentioned seal 4 is sealed between the air outlet 2a and the inlet 301 of the diversion pipe 30. The seal 4 is annular, specifically sealed around the periphery of the filter grille 214, including a groove 4a for embedding with the lower edge of the diversion pipe 30 and a flange 42 for sealing the air outlet 2a. The groove 4a is formed on one end wall of the seal 4, and the flange 42 is provided on the other end wall of the seal 4. In this embodiment, the groove 4a is formed on the upper end wall of the seal 4, and the lower end wall of the diversion pipe 30 is correspondingly provided with an annular flange 302 adapted to the groove 4a.

[0036] The seal 4 in this embodiment specifically includes a body 41, a flange 42 laterally extending from the lower edge of the body 41, and a buffer groove 4b is formed by leaving a gap between the flange 42 and the bottom surface of the body 41. The projection of the groove 4a on the plane where the buffer groove 4b is located at least partially overlaps with the buffer groove 4b. With such an overlapping design of the groove and the buffer groove, the vertical force during the installation of the groove can be applied to the buffer groove from the upper side, combined with the acting force applied by the flange itself to the buffer groove, which can play a superimposed role in the two seals of the seal; at the same time, since the opening directions of the buffer groove and the groove are different, for the seal itself, the combined external forces at the two places will further cause the seal to have a tendency to shrink inward, that is, after installation, with the help of the installation acting force, the seal can be tightened at the bottom of the diversion pipe to avoid falling off or fluid leakage caused by loose fitting.

[0037] In this embodiment, along the axial direction of the seal 4, the flange 42 is arranged to incline outward from top to bottom. With such an inclined design of the flange, under the negative pressure in the body of the floor washer, due to the pressure difference inside and outside, the flange will be pulled inward and move towards the body direction, thereby making the seal more tight.

[0038] To further prevent the seal from being unsealed due to outward turning during sealing, the above-mentioned flange 42 and the body 41 are locally fixedly connected to form a connecting wall 43. And the outer wall surface of the connecting wall 43 in this embodiment is arranged to incline inward from top to bottom.

[0039] As used in the present invention, "connected" refers to the spatial position relationship between two components or parts (hereinafter uniformly referred to as the first part and the second part respectively), that is, a fluid (gas, liquid or a mixture of both) can flow along a flow path or / and be transported from the first part to the second part. It can be that the first part and the second part are directly connected, or the first part and the second part are indirectly connected through at least one third party. The third party can be a fluid passage such as a pipe, a channel, a conduit, a diversion member, a hole, a groove, etc., or a chamber allowing the fluid to flow through or a combination of the above.

[0040] In addition, terms indicating directions, such as "front", "rear", "upper", "lower", "left", "right", "side", "top", "bottom", etc., are used in the description and claims of the present invention to describe various exemplary structural parts and elements of the present invention. However, these terms are used here only for the purpose of convenience of description and are determined based on the exemplary orientations shown in the drawings. Since the embodiments disclosed in the present invention can be arranged in different directions, these terms indicating directions are only for illustration and should not be regarded as limitations. For example, "upper" and "lower" are not necessarily limited to the directions opposite to or consistent with the direction of gravity.

Claims

1. A sealing structure for the pipeline of a floor washer, comprising: A sewage tank (25) for containing the fluid inhaled by the floor brush module (01), having an air outlet (2a) at its top; An air guide housing (3) arranged downstream of the sewage tank (25) along the flow direction of the fluid; Characterized in that the air guide housing (3) has a diversion pipe (30) for conveying the fluid, and the inlet (301) of the diversion pipe (30) is docked at the air outlet (2a); It further includes: A seal (4), in a ring shape, sealingly connected between the air outlet (2a) and the inlet (301) of the diversion pipe (30), including a groove (4a) for embedding with the lower edge of the diversion pipe (30) and a flange (42) for sealing the air outlet (2a). The groove (4a) is opened on one end wall of the seal (4), and the flange (42) is arranged on the other end wall of the seal (4); A connecting wall (43) is formed by a partial fixed connection between the flange (42) and the body (41); The seal (4) includes a body (41), the lower edge of the body (41) extends laterally to form the flange (42), and a buffer groove (4b) is formed by leaving a gap between the flange (42) and the bottom surface of the body (41); the projection of the groove (4a) on the plane where the buffer groove (4b) is located at least partially overlaps with the buffer groove (4b); along the axial direction of the seal (4), the flange (42) is arranged to incline outward from top to bottom; the groove (4a) is opened on the upper end wall of the seal (4), and the lower end wall of the diversion pipe (30) is correspondingly provided with an annular flange (302) adapted to the groove (4a); the outer wall surface of the connecting wall (43) is arranged to incline inward from top to bottom; a fan (12) is arranged in the air guide housing (3).

2. The sealing structure according to claim 1, wherein: The sewage tank (25) includes a cover body (21) and a box body (250) having an open top (200). The cover body (21) is covered at the open top (200), the air outlet (2a) is opened at the top of the cover body (21), and a filter grille (214) is further arranged at the air outlet (2a). The seal (4) is sealingly wound around the periphery of the filter grille (214).

3. The sealing structure according to claim 2, characterized in that: The cover body (21) includes a top plate (211) and a side edge (212) extending downward from the circumference of the top plate (211). In the state where the cover body (21) is covered at the open top (200), the side edge (212) is embedded in the inner edge of the open top (200), and a slag basket (23) capable of supporting the bottom of the side edge (212) is further arranged in the box body (250).

4. The sealing structure according to claim 3, characterized in that: The top plate (211) is arranged to incline downward from one side to the other side, and the lower end wall corresponding to the diversion pipe (30) has an inclined structure matching the top plate (211).

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