CN212089427U

CN212089427U - Sweeper with improved water tank structure

Info

Publication number: CN212089427U
Application number: CN202020125121.XU
Authority: CN
Inventors: 潘海平; 李来宾; 阳恩贵; 黄观林
Original assignee: Tuopu Jinggong Intelligent Manufacturing Shaoyang Co ltd
Current assignee: Tuopu Jinggong Intelligent Manufacturing Shaoyang Co ltd
Priority date: 2020-01-19
Filing date: 2020-01-19
Publication date: 2020-12-08
Anticipated expiration: 2030-01-19

Abstract

The sweeper with the improved water tank structure comprises a main frame, and further comprises an air pump and a water storage tank which are arranged on the main frame, wherein the air pump is used for outputting pressure gas, the water storage tank is provided with a water storage cavity, a water inlet, a water outlet and a gas inlet hole, the water inlet hole is communicated with the air pump, the pressure gas output by the air pump enters the water storage tank so as to adjust the air pressure in the water storage tank, and the water storage tank is detachably arranged on the main frame of the sweeper; it is characterized by that in the direction of pressure conduction path formed from air inlet hole, water storage cavity and water outlet at least one of the positions of air inlet hole and water outlet is equipped with a one-way valve, said one-way valve can make the medium driven by pressure flow along the direction of pressure conduction path, but can not make the medium flow reversely.

Description

Sweeper with improved water tank structure

Technical Field

The invention relates to the technical field of floor sweepers, in particular to a cleaning device of a floor sweeper with an improved water tank structure.

Background

In order to increase the functions of the sweeper and improve the utilization rate of the sweeper, the sweeper with the combination of sweeping and mopping functions has increasingly entered into the lives of people. The sweeper with the mopping function can be generally provided with a water tank and a mop, the water tank can be detachably connected with the machine body, a water outlet hole is formed in the bottom of the water tank, and the mop is arranged on the lower surface of the detachable water tank, so that the sweeper has the mopping function. Later in order to solve the serious problem that the water outlet hole of the water tank does not discharge water and leak water, the water outlet quantity in the water tank is accurately controlled, and people control the water outlet of the water tank by increasing the air pump to adjust the air pressure in the water tank. The utility model discloses a utility model patent of 201821259805.8, the name of the invention is a sweeper discloses air pump and water tank that set up in the sweeper body, the air pump with the water tank passes through the trachea and is connected with the connector, and the diapire of water tank is provided with the capillary apopore, and the outside of the diapire of water tank still is provided with the mop, the air pump intermittently for the water tank air feed with the water in the water tank is extruded through the capillary apopore and is realized accurately controlling the water yield of water tank. However, the prior art has the problem that, although when the air pump delivers pressurized air to the water tank, the air pressure in the water tank rises and pushes out the water in the water tank, when the air pump stops, the air in the inner cavity of the water tank can communicate with the atmosphere outside the water tank through the air pipe, and the water in the water tank can slowly permeate the fibers of the mop from the water in the fine outlet hole of the bottom wall under the action of the gravity of the water, resulting in uncontrolled water penetration of the water tank.

Disclosure of Invention

In order to solve the problem of uncontrolled water leakage of the water tank caused by the stop of the air pump when the sweeper stops in the patent CN 201821259805.8, the invention provides a sweeper with an improved water tank structure. The sweeper comprises a main frame, and further comprises an air pump and a water storage tank which are arranged on the main frame, wherein the air pump is used for outputting pressure gas, the water storage tank is provided with a water storage cavity, a water inlet, a water outlet and a gas inlet, the water inlet is communicated with the air pump, the pressure gas output by the air pump enters the water storage tank so as to adjust the air pressure in the water storage tank, and the water storage tank is detachably arranged on the main frame of the sweeper; the pressure-driven water storage device is characterized in that a one-way valve is arranged at least one of the position of the air inlet or the position of the water outlet in the direction of a pressure conduction path formed by the air inlet, the water storage cavity and the water outlet, and the one-way valve is used for enabling a medium pushed by pressure to flow in the direction of the pressure conduction path but not to flow reversely.

The pressure conduction path direction refers to a pressure conduction direction from the air inlet hole as a starting point to the water storage cavity and finally to the water outlet on the water storage tank.

The one-way valve is arranged at least one of the position of the air inlet or the position of the water outlet, namely the position of the one-way valve is provided with the following three conditions, wherein the first condition is that the one-way valve is arranged at the position of the air inlet; secondly, the one-way valve is arranged at the water outlet; in the third situation, a one-way valve is arranged at the position of the air inlet, and a one-way valve is also arranged at the position of the water outlet;

wherein, the medium refers to an aqueous medium and a gas medium which can flow into and out of the water tank.

The invention has the beneficial technical effects that firstly, when the one-way valve is arranged at the position of the air inlet, the pressure gas output by the air pump can only enter the water storage cavity from the position of the air inlet under the pressure state and can not reversely overflow, so that after the air pump stops outputting the pressure gas, the one-way valve can automatically close the air inlet, the space above the liquid level at the inner side of the water storage cavity becomes a relatively closed space, if the liquid continuously seeps out from the water outlet at the moment, the air pressure of the space above the liquid level at the inner side of the water storage cavity becomes lower, therefore, after the sweeper or the air pump stops working, the liquid in the water storage cavity is difficult to seep out from the water outlet in a large amount, and the water loss in the water storage box is reduced; second, when the delivery port position sets up during the check valve, let the liquid of water storage box can only be followed the delivery port position overflows under having the pressurized state, nevertheless can not let the outside air enter into the retaining intracavity, works as like this after the air pump stops output pressure gas, the check valve can self-sealing the delivery port lets the inboard liquid in retaining chamber is difficult to follow the delivery port is oozed in a large number, reduces the water yield loss in the water storage box. Compared with the prior art, the problem that liquid is easy to leak from the water outlet in the shutdown stage is greatly reduced.

The technical scheme is that the one-way valve is umbrella-shaped and comprises a central umbrella handle and a peripheral skirt edge, the central umbrella handle is connected to the water storage tank, the skirt edge is matched with the wall body of the water storage tank, and the umbrella opening of the one-way valve faces the direction of the pressure conduction path. The skirt edge is arranged at the periphery of an umbrella cover of the umbrella-shaped one-way valve, has a certain elastic thin-wall structure and has the function of elastically jogging and connecting other parts; thus, the peripheral skirt of the one-way valve is fixed and tensioned by a central umbrella stem attached to the reservoir, and is made to act as a one-way valve, allowing the medium to flow not only in the direction of the pressure conduction path under a certain pressure, but also not against the pressure conduction path. When the skirt edge is matched and connected with the wall body of the water storage tank, the skirt edge can be elastically deformed to a certain extent, so that the skirt edge has a certain deformation acting force and is pressed on the wall body of the water storage tank; when the one-way valve needs to be opened, the skirt edge needs to be applied with a deformation acting force which is larger than that of the skirt edge along the direction of the pressure conduction path to push the skirt edge away from the wall body of the water storage tank, and if the acting force is applied to the one-way valve along the direction opposite to the pressure conduction path, the skirt edge is attached to the wall body of the water storage tank more tightly; therefore, the one-way valve and the wall body of the water storage tank have good sealing performance, the flow direction of the medium can be controlled, and overflow of the medium in the water storage tank is greatly reduced.

The technical scheme is that the skirt edge is matched with the inner side of the water storage tank and is positioned on the wall body around the air inlet hole, and the skirt edge is used for allowing external air to enter the water storage tank but preventing the air in the water storage tank from flowing backwards and overflowing. The scheme is a one-way air inlet valve scheme, namely, a skirt edge of the one-way valve presses a wall body around the air inlet hole with certain deformation acting force, the one-way air inlet valve has the function of blocking the communication between the outside of the air inlet hole and the inner space of the water storage tank, when the air pressure outside the air inlet hole is larger than the air pressure above the liquid level in the water storage cavity and overcomes the deformation acting force of the skirt edge, the skirt edge is pushed away by the pressure air outside the air inlet hole, and therefore the pressure air can enter the water storage tank; on the contrary, when there is not pressure gas to pass through the inlet port gets into when the retaining intracavity, the shirt rim through self deformation effort or quilt the gaseous pressure of liquid level top in the water storage box compresses tightly on the peripheral wall body of inlet port, makes the shirt rim with the peripheral wall body of inlet port is connected inseparabler, the gas in the retaining intracavity not only can not pass through the inlet port flows outside the inlet port, moreover the liquid level top space in the retaining intracavity is in and becomes a relative confined space, if follow this moment the delivery port continues to ooze liquid and will let the atmospheric pressure in the inboard liquid level top space in water storage cavity step down, and outside atmosphere can be followed the outside roof pressure the liquid of delivery port, lets the liquid in the retaining intracavity is difficult for oozing, reduces the water yield loss in the water storage box.

The skirt edge is matched with the outer side of the water storage tank and is positioned on the wall body on the periphery of the water outlet, and the skirt edge is used for preventing external air from entering the water storage tank and enabling water in the water storage tank to overflow. The scheme is a one-way water outlet valve scheme, namely the one-way valve has the function of blocking the communication between the inner space of the water storage tank and the water outlet, when the pressure in the water storage cavity is greater than the external air pressure at the water outlet and overcomes the deformation acting force of the skirt, the skirt is pushed away by the water in the water storage cavity, and the water in the water storage tank can be discharged out of the water outlet; on the contrary, when no gas enters the water storage cavity through the gas inlet hole, the pressure in the water storage cavity is smaller than the external air pressure, the skirt edge is deformed through the skirt edge, the skirt edge is tightly connected with the wall body around the water outlet, external gas cannot enter the water storage cavity through the water outlet, water in the water storage box cannot overflow from the water storage box, and the water loss in the water storage box is further reduced.

The water outlet of the water storage tank is positioned on the lower wall body of the water storage tank, and a mop cloth is arranged on the outer side surface of the lower wall body. Therefore, water in the water storage tank can be discharged from the water outlet on the lower wall body of the water storage tank, and the mop cloth arranged on the outer side surface on the lower wall body can adsorb the water discharged from the water outlet of the water storage tank, so that the aim of wetting the mop cloth is fulfilled. The water storage box except that can follow under the gas effect of pressure that the air pump provided the delivery port of water storage box discharges water the machine of sweeping the floor shuts down or when the air pump is out of work, through outside atmospheric pressure and the deformation effort of check valve, make the delivery port of water storage box is by the check valve seals well, and the follow that significantly reduces delivery port on the lower wall body of water storage box seeps water's problem to reduce when the machine of sweeping the floor is out of work the water uptake of mop reduces bacterium breeding on the mop, the mop is also difficult for the erosion.

Further technical scheme can also be, still include the union, be provided with transition inner chamber and intercommunication in the union air inlet, the union gas outlet of transition inner chamber, the air pump passes through gas transmission trachea intercommunication the union air inlet reaches the transition inner chamber, the union is lip under being annular elasticity, the elasticity is lip encircleed down around the union gas outlet, works as the water storage box is installed when on the main frame of machine of sweeping the floor, thereby the perisporium butt joint of the inlet port of water storage box thereby the elasticity is lip lets down the gas transmission trachea passes through the transition inner chamber intercommunication the water storage chamber that sets up on the water storage box. The movable joint is a connecting component which is arranged on the sweeper and can be used for conducting gas, one end of the movable joint is connected with the gas transmission pipe, the other end of the movable joint is connected with the gas inlet hole of the water storage tank, the movable joint is not arranged on the water storage tank, and when the water storage tank is detached from the main frame of the sweeper, the movable joint is not connected with the gas inlet hole of the water storage tank. The annular elastic lower lip is a part which is arranged on the movable joint, is positioned below the movable joint, has elasticity and can play a sealing role, so that a central area of the elastic lower lip can form an air outlet of the movable joint, and when the elastic lower lip is connected with the peripheral wall of the air inlet hole of the water storage tank, the elastic lower lip can deform under the pressing action when the elastic lower lip is pressed by the peripheral wall of the air inlet hole of the water storage tank, and the contact between the lower lip and the peripheral wall of the air inlet hole of the water storage tank can be tighter. Thus, the beneficial technical effects of the technical scheme are as follows: firstly, the water storage tank is not required to be provided with an additional connecting air pipe and a switching joint, and only needs to be provided with an air inlet hole of the water storage cavity for air to enter, so that the design and manufacturing difficulty of the water storage tank is greatly reduced, and meanwhile, because the water storage tank is not provided with a detachably mounted connecting joint, the risk of accidentally losing the connecting joint is reduced when the water storage tank is assembled and disassembled; secondly, the movable joint is used as a connecting component for connecting the gas transmission pipe and the water storage tank, the elastic lower lip part surrounds the gas outlet of the movable joint, the other end of the elastic lower lip part is in butt joint with the peripheral wall of the gas inlet hole of the water storage tank to form sealing connection, so that a sealing channel which is only communicated with the gas outlet of the movable joint and the gas inlet hole of the water storage tank is formed in the lower lip part channel in the elastic lower lip part, and gas output by the air pump can be transmitted into the water storage tank through the movable joint, so that the installation and the disassembly of the water storage tank are greatly facilitated; thirdly, because the lower lip of elasticity is because there is certain elastic deformation distance, as long as guarantee under the elasticity lip with the perisporium osculating of the inlet port of water storage box forms sealing connection, the water storage box can have certain activity space after the installation, and such advantage lies in, when the machine of sweeping the floor is using, the water storage box can keep in certain vibrations within range with the sealing connection of union guarantees that the gas of air pump output can pass through the union is transmitted to in the water storage box.

The further technical scheme can also be that the movable joint comprises a gland and a sealing ring which are arranged up and down, the sealing ring is sleeved on the gland, and the elastic lower lip part is arranged on the sealing ring. Therefore, the sealing ring with certain elasticity can tightly sleeve the gland, so that the sealing ring can form good sealing with the surface of the gland, the gas leakage from the joint between the gland and the sealing ring is reduced, and the sealing ring can be well fixed on the gland.

The elastic jacking device is jacked on the pressure cover so as to add downward elastic jacking force to the movable joint and enable the elastic lower lip of the sealing ring to be more reliably connected with the peripheral wall of the air inlet hole of the water storage tank in a matched mode. It goes without saying that the movable joint is movable, in one embodiment, when the peripheral wall of the air inlet hole of the water storage tank is in contact with the elastic lower lip, the movable joint moves in a direction away from the water storage tank under the action of the water storage tank, the elastic pressing device adds the elastic pressing force to the movable joint, the direction of the elastic pressing force is opposite to the moving direction of the movable joint, so that the movable joint tightly presses the water storage tank, and the sealing performance between the elastic lower lip and the peripheral wall of the air inlet hole of the water storage tank is better.

The technical scheme can be further characterized in that a guide part is arranged on the water tank and comprises a guide hole, a guide groove and a limiting rib; the mop is provided with a connecting portion, a fixing column and a mop body, the fixing column and the mop body are respectively fixedly connected to two ends of the connecting portion, the fixing column can be detachably mounted in the guide groove, and the guide groove is provided with a notch for avoiding the connecting portion. The guide groove is a groove body arranged on the wall body of the water tank, for example, the cross section of the guide groove can be in a C shape or a shape similar to the C shape, one end of the guide groove is communicated with the guide hole, the other end of the guide groove is connected with the limiting rib, and a notch is arranged on one side wall of the guide groove. The fixed column is a long-strip-shaped column with certain rigidity, the diameter of the fixed column is smaller than that of the guide groove, the fixed column can be detachably mounted in the guide groove, meanwhile, the diameter of the fixed column is larger than the opening size of the notch of the guide groove, and the fixed column cannot be separated from the notch of the guide groove. Therefore, the mop cloth can be acted by the transverse friction force parallel to the ground when in use, if the mop cloth is stuck and connected with the mop cloth only by the magic tape arranged at the bottom of the water storage tank like a traditional sweeper, the mop cloth can be displaced or fall off due to the transverse friction force when in use, in order to better fix the mop cloth on the water storage tank, the water storage tank is provided with the guide groove, the mop cloth is provided with the fixing column matched with the guide groove, and the guide groove can reversely tension the mop cloth when the mop cloth is acted by the transverse friction force, so that the problem of displacement or loosening of the mop cloth is reduced; meanwhile, the fixing posts can also be detached from the guide grooves, so that the mop can be cleaned independently.

The main frame is provided with a slide rail and a buckling hole, the water storage tank is provided with a slide groove, and the slide rail can be inserted into the slide groove; the water storage tank is also provided with a movable lock catch and a locking spring, the lock catch is pressed by the locking spring, a buckle tongue capable of passing in and out of the buckle hole is arranged on the lock catch, the water storage tank is connected with the sliding groove through the sliding rail, and the buckle hole is matched with the lock catch and detachably arranged on the main frame. Therefore, the water storage tank can be conveniently detached from the main frame, and water can be added to the water storage tank or the water storage tank can be cleaned.

Due to the characteristics and advantages, the invention can be applied to sweeper equipment with an improved water tank structure.

Drawings

Fig. 1 is an exploded schematic view of a sweeper with a water tank applying the technical scheme of the invention;

fig. 2 is a schematic cross-sectional structure diagram of a sweeper with a water tank, to which the technical scheme of the invention is applied;

FIG. 3 is a schematic sectional view of the movable joint in the front view direction;

FIG. 4 is a schematic axial view of the reservoir assembly showing the guide location configuration;

FIG. 5 is a schematic structural view of the main frame in the axial direction, showing the structure of the connection position of the bottom of the main frame and the water storage tank;

FIG. 6 is a schematic view of the front view of the reservoir assembly;

FIG. 7 is a schematic sectional view of the check valve in a front view;

FIG. 8 is a schematic cross-sectional view of the reservoir along direction A-A, showing the configuration of the inlet with a check valve and the outlet with a fiber cotton core;

FIG. 9 is a schematic cross-sectional view of the reservoir along direction A-A showing the configuration of a check valve at the inlet and a check valve at the outlet;

FIG. 10 is a schematic view in section in the direction B-B of the reservoir showing the mop installation configuration;

fig. 11 is an enlarged view of a portion M in fig. 10.

Detailed Description

The sweeper with the water tank applying the technical scheme of the invention is further described with reference to the accompanying drawings.

As shown in fig. 1 to 5, the sweeper provided by the present invention comprises a main frame 100, an air pump 400, an air pipe 402 and a water tank 500. The main frame 100 is a member mainly used for connecting other components. The water storage tank 500 is detachably mounted on the main frame 100, a sliding groove 513 is arranged at the front part of the water storage tank 500, a sliding rail 103 is arranged at the bottom of the main frame 100, the sliding rail 102 can be inserted into the sliding groove 513, and the sliding rail 102 limits the up-and-down movement of the water storage tank 500; meanwhile, the rear part of the water storage tank 500 is provided with a lock catch (503, 504) and a lock spring 505 which is pressed against the lock catch (503, 504), the lock catch (503, 504) is provided with a convex lock tongue (506, 507), the main frame 100 is provided with a buckle hole (103, 104) which can be matched with the lock tongue (506, 507), when the water storage tank 500 is arranged on the main frame 100, the lock spring 505 presses against the lock catch (503, 504) to enable the lock tongue (506, 507) to extend into the buckle hole (103, 104), and the lock catch (503, 504) can limit the movement of the water storage tank 500 in the front-back and up-down directions, so that the water storage tank 500 can be well arranged on the main frame 100; when the water tank 500 needs to be detached from the main frame 100, the water tank 500 can be detached and installed conveniently when water is added and cleaned by only pushing the lock catches (503, 504) and allowing the lock tongues (506, 507) to leave the lock holes (103, 104) and then pulling the water tank 500 out of the slide rails 103 on the main frame 100. The air pump 400 is installed on the main frame 100, the air pump 400 is provided with an air pump air outlet 401, and pressure air generated by the air pump 400 can be discharged from the air pump air outlet 401. The gas transmission pipe 402 is communicated with a gas pump gas outlet 401 of the gas pump 400, and the pressure gas generated by the gas pump 400 enters the gas transmission pipe 402 through the gas pump gas outlet 401. The water storage tank 500 is provided with a water storage cavity 502, a water inlet 512, a water outlet 522 and an air inlet 511, wherein the water storage cavity 502 is communicated with the water inlet 512, the water outlet 522 and the air inlet 511, and in the invention, the air inlet 511 is arranged on the upper wall body 510 of the water storage tank 500 and is mainly used for allowing air to enter or discharge the water storage tank 500 so as to adjust the air pressure in the water storage tank 500; the water inlet 512 is also disposed on the upper wall 510 of the reservoir 500, and is primarily used for allowing water to enter or exit the reservoir chamber 502; the water outlet 522 is disposed on the lower wall 520 of the water tank 500, and is mainly used for discharging water in the water tank 500 to the outside of the lower wall 520 of the water tank 500. Meanwhile, the water inlet 512 is provided with a detachably installed plug 501, when the water storage tank 500 needs to be filled with water, the plug 501 is detached and the water storage tank 500 is filled with water, and when the water storage tank 500 is filled with water, the plug 501 is installed to prevent water and air from flowing out of the water storage tank 500 from the water inlet 512 of the water storage tank 500.

As shown in fig. 1 to 3, the sweeper further includes a movable joint 300, the movable joint 300 is a connecting member that is disposed on the sweeper and can be used for gas conduction, and a transition inner cavity 313, a movable joint gas inlet 311 and a movable joint gas outlet 314 that are communicated with the transition inner cavity 313 are disposed in the movable joint 300. The movable joint 300 comprises a gland 310 and a sealing ring 320 which are arranged up and down, the sealing ring 320 is sleeved on the gland 310, an annular elastic lower lip 321 is arranged on the sealing ring 320, and the elastic lower lip 321 surrounds the periphery of the air outlet 314 of the movable joint. The sealing ring 320 with certain elasticity can tightly fit on the gland 310, so that the sealing ring 320 can form a good seal with the surface of the gland 310, gas leakage from the joint between the gland 310 and the sealing ring 320 is reduced, and the sealing ring 320 can be well fixed on the gland 310. The gland 310 is provided with a pipe joint 312 and a sliding hole 315, the movable joint air inlet 311 is arranged on the pipe joint 312, the air conveying pipe 402 is sleeved on the pipe joint 312, and the air conveying pipe 402 is communicated with the transition inner cavity 313 through the movable joint air inlet 311, that is, the pressure air output by the air pump 400 can be conveyed to the transition inner cavity 313 of the movable joint 300 through the air conveying pipe 402 and discharged from the movable joint air outlet 314. When the water storage tank 500 is installed on the main frame 100 of the sweeper, the peripheral wall of the air inlet 511 of the water storage tank is in fit with the elastic lower lip 321, so that the air inlet 511 of the water storage tank is communicated with the movable joint air outlet 314, and the air pump air outlet 401 is communicated with the water storage cavity 502 through the air conveying pipe 402, the movable joint 300 and the air inlet 511 of the water storage tank.

As shown in fig. 2, the pipe joint 312 at one end of the movable joint 300 is connected with the air delivery pipe 402, the elastic lower lip 321 at the other end is in butt joint with the peripheral wall of the air inlet 511 of the water storage tank, and the movable joint 300 is not arranged on the water storage tank 500 but arranged on the main frame 100, when the water storage tank 500 is detached from the main frame 100 of the sweeper, the movable joint 300 is separated from the peripheral wall of the air inlet 511 of the water storage tank, that is, the movable joint 300 can be used as the air delivery joint of the water storage tank 500 mounted on the main frame, but does not prevent the water storage tank 500 from being mounted and detached.

As shown in fig. 2 and 3, the annular elastic lower lip 321 is a part which is provided on the movable joint 300 and located below the movable joint 300, has elasticity and can perform a sealing function, so that a central region thereof can not only form the movable joint air outlet 314, but also when the elastic lower lip 321 is connected with the peripheral wall of the water inlet hole 511 of the water storage tank, the elastic lower lip 321 is deformed under the pressing force when the elastic lower lip 321 is pressed by the peripheral wall of the water inlet hole 511 of the water storage tank, and the contact between the elastic lower lip 321 and the peripheral wall of the water inlet hole 511 of the water storage tank becomes tighter, so that the leakage of air from the connection between the elastic lower lip 321 and the peripheral wall of the water inlet hole 511 of the water storage tank can be reduced.

As shown in fig. 2, the movable joint 300 further includes an elastic pressing device 200, the elastic pressing device 200 includes a spring 202 and a screw 201 for locking the spring 202, the screw 201 is fixed on the screw post 101 of the main frame 100, one end of the spring 202 presses against the end surface of the pressing cover 310, and the other end of the spring 202 presses against the screw 201. The elastic pressing device 200 presses the pressing cover 310 to apply downward elastic pressing force to the movable joint 300 and to make the elastic lower lip portion 321 of the sealing ring 320 and the peripheral wall of the water inlet hole 511 of the water storage tank be more reliably engaged. The sliding hole 315 of the movable joint 300 is sleeved on the screw post 101 of the main frame 100, the movable joint 300 can move up and down along the screw post 101, when the peripheral wall of the air inlet hole 511 of the water storage tank is engaged with the elastic lower lip portion 321, the movable joint 300 can move upwards under the pressing action of the water storage tank 500, meanwhile, the elastic pressing device 200 adds downward elastic pressing force to the movable joint 300, and the direction of the elastic pressing force is opposite to the moving direction of the movable joint 300, so that the movable joint 300 can be tightly pressed on the water storage tank 500, and the sealing performance of the elastic lower lip portion 321 and the peripheral wall of the air inlet hole 511 of the water storage tank is better. Thus, when the sweeper is in operation, the elastic lower lip 321 can still be well connected with the peripheral wall of the water inlet 511 of the water reservoir within a certain vibration range of the water reservoir 500.

Compared with the prior art, the beneficial technical effect of this embodiment lies in: on the first hand, the water storage tank 500 is not required to be provided with an additional connecting air pipe and a switching joint, and only the air inlet 511 of the water storage tank for air to enter is required to be arranged, so that the design and manufacturing difficulty of the water storage tank 500 is greatly reduced, and meanwhile, because the water storage tank 500 is not provided with a detachably mounted connecting joint, the risk of accidentally losing the connecting joint is reduced when the water storage tank 500 is assembled and disassembled; in the second aspect, the movable joint 300 is used as a connecting member for connecting the air delivery pipe 402 and the water storage tank 500, the elastic lower lip 321 surrounds the periphery of the movable joint air outlet 314, the elastic lower lip 321 is in sealing connection with the periphery wall of the water storage tank air inlet 511, and the air output by the air pump 400 can be delivered into the water storage tank 500 through the movable joint 300, which greatly facilitates the installation and the disassembly of the water storage tank 500; in a third aspect, because the movable joint 300 has a certain vertical movement distance, as long as the elastic lower lip 321 is in contact with the peripheral wall of the water inlet 511 of the water storage tank to form a sealing connection, the water storage tank 500 can have a certain vertical movement space after being installed on the main frame 100, which is advantageous in that when the sweeper is used, the water storage tank 500 can maintain the sealing connection with the movable joint 300 within a certain vibration range, and it is well ensured that the gas output by the air pump 400 can be transmitted into the water storage cavity 502 through the movable joint 300.

In order to realize the floor mopping function of the sweeper, as shown in fig. 8, the water outlet 522 of the water tank 500 is located on the lower wall body 520 of the water tank, a mop 540 is mounted on the outer side surface of the lower wall body 520 of the water tank, and a fiber cotton core 550a is arranged in the water outlet 522 a. A plurality of capillary water outlet holes are formed in the fiber cotton core 550a, water in the water storage cavity 502 can be slowly absorbed into the fiber cotton core 550a through the absorption performance of the capillary water outlet holes, pressure air is conveyed into the water storage cavity 502 through the air pump 400, the water in the water storage cavity 502 is discharged from the fiber cotton core 550a under the action of the air pressure and flows onto the mop cloth 540, and therefore the purpose of wetting the mop cloth 540 is achieved.

In order to reduce the leakage problem of the water outlet 522a of the water storage tank, as shown in fig. 7-9, a check valve 530 is disposed at least one of the position of the water inlet 511 or the position of the water outlet 522 in the direction of the pressure conduction path from the water inlet 511 to the water storage chamber 502 to the water outlet 522, and the check valve 530 is used for allowing the gas or water pushed by the pressure to flow along the direction of the pressure conduction path but not to flow in the reverse direction. In this embodiment, the pressure conduction path is from the inlet hole 511 on the upper wall of the reservoir 500, then into the reservoir cavity 502, and finally to the outlet 522 on the lower wall of the reservoir 500.

As shown in fig. 8, the one-way valve 530 is in an umbrella shape and includes a central umbrella stem 531 and an umbrella cover 532 connected to the top of the central umbrella stem 531, a skirt 533 is disposed around the umbrella cover 532, the skirt 533 has a certain elastic thin-wall structure and has an elastic connection function with other components, when the skirt 533 is engaged with the wall of the water storage tank 500, the skirt 533 will elastically deform to press against the wall of the water storage tank 500 with a certain force. Said one-way valve 530 further comprises a canopy 534, said canopy 534 being an opening of said canopy 532, a bottom portion of said central shaft 531 extending from said canopy 534. The one-way valve 530 can make the skirt 533 turn up under the action of the force in the direction opposite to the umbrella opening 534, and the skirt 533 can reset and be matched and connected with the wall of the water storage tank 500 after the force disappears, and the one-way valve 530 not only can make the medium flow along the pressure conduction path only under a certain pressure, but also can make the medium flow along the direction opposite to the pressure conduction path. The check valve 530 is disposed at the position of the air inlet 511, the central umbrella handle 531 is connected to the upper wall 510 of the water storage tank 500, the skirt 533 is pressed against the inner peripheral wall of the air inlet 511 of the water storage tank with a certain deformation force, and the skirt 533 is engaged with the side wall of the air inlet 511 of the water storage tank. When the air pressure outside the air inlet holes 511 is higher than the air pressure in the reservoir cavity 502 and the deformation force of the skirt 533 is overcome, the one-way valve 530 is opened under the action of the air pressure outside the air inlet holes 511, and the air outside the air inlet holes 511 enters the reservoir cavity 502 through the air inlet holes 511; however, when the air pump 400 stops outputting the pressurized air into the reservoir chamber 502, the skirt 533 will be restored by its own deformation force and fit with the sidewall of the inlet hole 511 of the reservoir, and the check valve 530 is closed to prevent the air in the reservoir chamber 502 from flowing out of the inlet hole 511 in the opposite direction. As shown in fig. 9, the one-way valve 530 is disposed at the outlet 522, the central shaft 531 is connected to the lower wall 520 of the water storage tank, and the peripheral skirt 533 of the umbrella cover 532 presses the outer sidewall of the outlet 522 of the water storage tank with a certain deformation force. When the pressure in the reservoir chamber 502 is greater than the air pressure outside the outlet 522 and the deformation force of the skirt 533 is overcome, the check valve 530 is opened under the pressure of the reservoir chamber 502, the water in the reservoir chamber 502 flows out of the lower wall 520 of the reservoir through the outlet 522, but when the air pump 400 stops outputting the pressurized air into the reservoir chamber 502, the pressure in the reservoir chamber 502 is less than the external air pressure, the skirt 533 is reset by the deformation force and fits the sidewall of the outlet 522 of the reservoir, and the water in the reservoir chamber 502 stops flowing out of the outlet 522. Thus, the technical solution has the beneficial effects that firstly, when the one-way valve 530 is arranged at the position of the air inlet 511, the pressure gas output by the air pump 400 can only enter the water storage cavity 502 from the position of the air inlet 511 under a pressurized state and cannot reversely overflow, so that after the air pump 400 stops outputting the pressure gas, the one-way valve 530 can automatically close the air inlet 511, the space above the liquid level inside the water storage cavity 502 becomes a relatively closed space, and if the liquid continuously seeps out from the water outlet 522 at the moment, the air pressure in the space above the liquid level inside the water storage cavity 502 becomes low, so that the liquid in the water storage cavity 502 is difficult to seep out from the water outlet 522a large amount after the sweeper or the air pump 400 stops working, and the water loss in the water storage tank 500 is reduced; secondly, when the one-way valve 530 is arranged at the position of the water outlet 522, the liquid in the water storage tank 500 can only overflow from the position of the water outlet 522 in a pressurized state, but external air cannot enter the water storage cavity 502, so that after the air pump 400 stops outputting the pressurized air, the one-way valve 530 can automatically close the water outlet 522, the liquid in the water storage cavity 502 is difficult to largely seep out from the water outlet 522, and the water loss in the water storage tank 500 is reduced. In contrast to the prior art, the problem of easy leakage of liquid from the outlet 522 during the shut-down phase is greatly reduced.

By arranging the check valve 530 at the position of the air inlet 511 and the position of the water outlet 522 of the water storage tank, the problem that liquid is easy to leak from the water outlet 522 in the shutdown stage can be greatly reduced in addition to well controlling the water outlet quantity of the water outlet 522 at the lower part of the water storage tank 500 by the air pump 400; therefore, when the sweeper is used for mopping the floor, the pressure gas generated by the air pump 400 is input into the water storage tank 500, and the water in the water storage tank 500 is discharged from the water outlet 522 of the water storage tank, so that the mop 540 can be wetted; also can be in the machine of sweeping the floor shuts down or when air pump 400 is out of work, through atmospheric pressure and the outside atmospheric pressure in the airtight space in the water storage box 500 form the pressure differential, and the deformation effort of check valve 530 makes the delivery port 522 of water storage box is lived well by check valve 530, and the very big reduction is followed the delivery port 522 infiltration of water storage box reduces when the machine of sweeping the floor is out of work the water uptake of mop 540 reduces bacterium on the mop 540 breeds, mop 540 is difficult for erosion too.

Further technical solution, as shown in fig. 4, 6, 10 and 11, the water tank is provided with a guide part 550, and the guide part 550 includes an introduction hole 551, a guide groove 552 and a limit rib 553; the mop 540 is provided with a connecting part 542, a fixing post 541 and a mop body 543, the fixing post 541 and the mop body 543 are respectively fixedly connected to both ends of the connecting part 542, the fixing post 541 is detachably mounted in the guide groove 552, and the guide groove 552 is provided with a notch 554 avoiding the connecting part 542. The guide groove 552 is a groove body having a C-shaped cross section or a shape similar to the C-shaped cross section and disposed on the wall of the water storage tank 500, one end of the guide groove 552 is communicated with the introduction hole 551, and the other end of the guide groove 552 is connected with the limiting rib 553, and the limiting rib 553 can limit the position of the fixing column 541 entering the guide groove 552. The fixed column 541 is a long-strip-shaped column with certain rigidity, the diameter of the fixed column 541 is smaller than that of the guide groove 552, the fixed column 541 can be detachably installed in the guide groove 552, meanwhile, the diameter of the fixed column 541 is larger than the opening size of the notch 554 of the guide groove, and the fixed column 541 cannot be separated from the notch 554 of the guide groove 552; the mop 540 has the advantages that the mop 540 is acted by the transverse friction force parallel to the ground when in use, if the mop 540 is stuck and connected with the mop 540 only by the magic tape 508 arranged at the bottom of the water storage tank 500 like a traditional sweeper, the mop 540 can be displaced or fall off by the transverse friction force when in use, in order to ensure that the mop 540 is better fixed on the water storage tank 500, the guide groove 552 is arranged on the water storage tank 500, the fixing column 541 matched with the guide groove 552 is arranged on the mop 540, and the guide groove 552 can reversely tension the mop 540 when the mop 540 is acted by the transverse friction force, so that the problem of displacement or loosening of the mop 540 is reduced; at the same time, the fixing posts 541 can be removed from the guide slots 552, which facilitates the individual cleaning of the mop 540.

Claims

1. The sweeper with the improved water tank structure comprises a main frame, and further comprises an air pump and a water storage tank which are arranged on the main frame, wherein the air pump is used for outputting pressure gas, the water storage tank is provided with a water storage cavity, a water inlet, a water outlet and an air inlet, the water inlet is communicated with the water storage cavity, the pressure gas output by the air pump enters the water storage tank so as to adjust the air pressure in the water storage tank, and the water storage tank is detachably arranged on the main frame of the sweeper; the pressure-driven water storage device is characterized in that a one-way valve is arranged at least one of the position of the air inlet or the position of the water outlet in the direction of a pressure conduction path formed by the air inlet, the water storage cavity and the water outlet, and the one-way valve is used for enabling a medium pushed by pressure to flow in the direction of the pressure conduction path but not to flow reversely.

2. The sweeper with the improved water tank structure as claimed in claim 1, wherein the one-way valve is umbrella-shaped and comprises a central umbrella handle and a peripheral skirt, the central umbrella handle is connected to the water storage tank, the skirt is fitted on the wall body of the water storage tank, and an umbrella opening of the one-way valve faces the direction of the pressure transmission path.

3. The sweeper with the improved water tank structure as claimed in claim 2, wherein the skirt is engaged with the inner side of the water storage tank and is located on the wall body around the air inlet hole, and the skirt is used for allowing external air to enter the water storage tank but preventing the air in the water storage tank from flowing backwards and overflowing.

4. The sweeper with the improved water tank structure as claimed in claim 2, wherein the skirt is fitted to a wall body outside the water storage tank and around the water outlet, and the skirt is used for preventing external air from entering the water storage tank and allowing water in the water storage tank to overflow.

5. The sweeper with the improved water tank structure as claimed in any one of claims 1 to 4, wherein the water outlet of the water storage tank is located on a lower wall body of the water storage tank, and mops are mounted on the outer side surface of the lower wall body.

6. The sweeper with the improved water tank structure as claimed in claim 5, further comprising a movable joint, wherein the movable joint is provided with a transition inner cavity and a movable joint air inlet and a movable joint air outlet which are communicated with the transition inner cavity, the air pump is communicated with the movable joint air inlet and the transition inner cavity through an air conveying pipe, the movable joint comprises an annular elastic lower lip portion, the elastic lower lip portion surrounds the periphery of the movable joint air outlet, and when the water storage tank is installed on the main frame of the sweeper, the peripheral wall of the air inlet of the water storage tank is matched with the elastic lower lip portion so that the air conveying pipe is communicated with the water storage cavity formed in the water storage tank through the transition inner cavity.

7. The sweeper with the improved water tank structure as claimed in claim 6, wherein the movable joint comprises a pressing cover and a sealing ring which are arranged up and down, the sealing ring is sleeved on the pressing cover, and the elastic lower lip is arranged on the sealing ring.

8. The sweeper with the improved water tank structure as claimed in claim 7, further comprising an elastic pressing device which presses against the pressing cover so as to add downward elastic pressing force to the movable joint and enable the elastic lower lip of the sealing ring to be more reliably engaged with the peripheral wall of the air inlet hole of the water storage tank.

9. The sweeper with the improved water tank structure as claimed in claim 5, wherein a guide part is arranged on the water tank, and the guide part comprises a guide hole, a guide groove and a limiting rib; the mop is provided with a connecting portion, a fixing column and a mop body, the fixing column and the mop body are respectively fixedly connected to two ends of the connecting portion, the fixing column can be detachably mounted in the guide groove, and the guide groove is provided with a notch for avoiding the connecting portion.

10. The sweeper with the improved water tank structure as claimed in claim 5, wherein a slide rail and a buckle hole are arranged on the main frame, a slide groove is arranged on the water storage tank, and the slide rail can be inserted into the slide groove; the water storage tank is also provided with a movable lock catch and a locking spring, the lock catch is pressed by the locking spring, a buckle tongue capable of passing in and out of the buckle hole is arranged on the lock catch, the water storage tank is connected with the sliding groove through the sliding rail, and the buckle hole is matched with the lock catch and detachably arranged on the main frame.