Sealed water tank structure meeting positive and negative air pressure

Abstract

The utility model discloses a sealed water tank structure meeting positive and negative air pressure. The sealed water tank structure comprises a water tank body, a water tank upper cover and a sealing piece, a fixing groove is formed in the water tank upper cover, the sealing piece is arranged in the fixing groove, and the water tank upper cover covers the water tank body; the sealing piece comprises a fixed end and a free end, the fixed end is in interference fit with the fixed groove, the free end extends out of the fixed groove, and when the water tank upper cover covers the water tank body, the free end is in interference fit with the upper end face of the water tank body. The water tank has the advantage that the sealing performance between the water tank upper cover and the water tank body is good.

Description

Technical Field

[0001] The utility model relates to the technical field of floor sweepers, in particular to a sealed water tank structure that meets positive and negative air pressures. Background Art

[0002] With the development of household cleaning technology, household cleaning equipment has gradually become diversified, and it has become a trend to use cleaning robots instead of manual cleaning. Cleaning robots are usually equipped with cleaning bases to enable functions such as autonomous charging, autonomous dust collection, autonomous sweeping and mopping cloth, autonomous sewage collection, and even automatic fresh water addition and automatic sewage discharge. In existing cleaning base products, the usage mode of the base is relatively single, and only a water tank can be used alone or a water supply and drainage module can be used. The existing water tank is not compatible with the water supply and drainage module, that is, the sealing performance of the water tank without the water supply and drainage function cannot meet the sealing requirements during water supply and drainage.

[0003] In view of this, the purpose of the utility model is to provide a new technical solution to solve the existing technical problems. Content of the Utility Model

[0004] In order to overcome the deficiencies of the prior art, the utility model provides a sealed water tank structure that meets positive and negative air pressures, and solves the problem of insufficient sealing performance of the existing water tank structure.

[0005] The technical solution adopted by the utility model to solve its technical problems is as follows:

[0006] A sealed water tank structure that meets positive and negative air pressures, including a water tank body, a water tank upper cover, and a seal;

[0007] The water tank upper cover is provided with a fixing groove, the seal is arranged in the fixing groove, and the water tank upper cover covers the water tank body;

[0008] The seal includes a fixed end and a free end, the fixed end is in interference fit with the fixing groove, the free end extends out of the fixing groove, and when the water tank upper cover is closed on the water tank body, the free end is in interference fit with the upper end face of the water tank body.

[0009] In the above structure, one side of the water tank upper cover is rotatably connected to the water tank body, and the water tank upper cover is provided with a buckle, and the water tank body is provided with a buckling portion adapted to the buckle.

[0010] In the above structure, the free end of the seal includes an inner layer structure and an outer layer structure, and the cross-section of the free end is in a "human" shape structure.

[0011] In the above structure, a ring-shaped protrusion is arranged on the periphery of the fixed end, and the ring-shaped protrusion is in interference fit with the groove wall of the fixing groove.

[0012] In the above structure, the seal is made of soft rubber material.

[0013] In the above structure, a ring of convex ribs is fixedly arranged on the upper end face of the water tank body towards the side of the water tank upper cover, and the free end of the seal is in interference fit with the convex ribs.

[0014] In the above structure, a plurality of reinforcing ribs are fixedly connected to the upper end face of the water tank body on the side facing away from the water tank upper cover.

[0015] In the above structure, an air inlet / outlet column, a dirt suction column, and a sewage discharge column are arranged in the water tank body on the side far from the bottom of the water tank body. The air inlet / outlet column, the dirt suction column, and the sewage discharge column communicate to the outside of the water tank body. A sewage discharge hose is connected to the sewage discharge column, and one end of the sewage discharge hose far from the sewage discharge column hangs down to the bottom of the water tank body.

[0016] In the above structure, one end of the sewage discharge hose far from the sewage discharge column is provided with an anti-blocking head. The anti-blocking head is in the shape of a hollow cylinder, and a plurality of convex blocks are arranged at the bottom of the anti-blocking head.

[0017] In the above structure, a hose limiting block for limiting one end of the sewage discharge hose far from the sewage discharge column is arranged at the bottom of the water tank body.

[0018] The beneficial effects of the present utility model are as follows: A seal is arranged between the water tank upper cover and the water tank body, so that the sealed water tank structure can have good sealing performance in both positive pressure state and negative pressure state in the air; and the sealed water tank structure integrates the functions of air inlet / outlet, dirt suction, and sewage discharge, and has good sealing performance, and can be applied to the sweeping robot base stations with and without water supply and drainage functions at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present utility model will be further described below with reference to the drawings and embodiments.

[0020] Figure 1 is the overall structure schematic diagram of the present utility model;

[0021] Figure 2 is the structural split schematic diagram of the present utility model;

[0022] Figure 3 is the cross-sectional schematic diagram of the water tank upper cover of the present utility model;

[0023] Figure 4 is Figure 3 the enlarged schematic diagram of part A in

[0024] Figure 5 is the external structure schematic diagram of the water tank body of the present utility model;

[0025] Figure 6 is the internal structure schematic diagram of the water tank body of the present utility model;

[0026] Figure 7 It is a schematic diagram of the anti-blocking head structure in the present utility model.

[0027] Reference numerals:

[0028] 1. Upper cover of water tank; 11. Fixed groove; 12. Snap; 13. Handle;

[0029] 2. Water tank body; 21. Buckling part; 22. Convex rib; 23. Reinforcing rib; 24. Air inlet and outlet column; 25. Sewage suction column; 26. Sewage discharge column; 261. Sewage discharge hose; 262. Anti-blocking head; 27. Limit block;

[0030] 3. Sealing member; 31. Fixed end; 311. Ring-shaped protrusion; 32. Free end; 321. Inner layer structure; 322. Outer layer structure. Specific embodiments

[0031] The following will further illustrate the present utility model in conjunction with the attached Figure 1-7 drawings.

[0032] The following will clearly and completely describe the concept, specific structure and technical effects generated by the present utility model in conjunction with the embodiments and drawings, so as to fully understand the purpose, features and effects of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, other embodiments obtained by those skilled in the art without creative efforts shall fall within the scope of protection of the present utility model. In addition, all the connection / connection relationships involved in the patent do not simply refer to the direct connection of components, but refer to the more optimal connection structure that can be formed by adding or reducing connection accessories according to the specific implementation situation. Each technical feature in the present utility model can be combined interactively without conflict.

[0033] Refer to Figures 1 to 7 , this technical solution provides a sealed water tank structure that meets positive and negative air pressures and is applied to a sweeping robot base station, including an upper cover 1 of the water tank, a water tank body 2 and a sealing member 3. Among them, the water tank body 2 is connected to the sewage suction pump and sewage discharge pump in the sweeping robot base station to perform the work of automatically collecting and discharging sewage; the upper cover 1 of the water tank covers the water tank body 2 to form a closed box structure; the sealing member 3 is arranged on the upper cover 1 of the water tank and cooperates with the upper cover 1 of the water tank and the water tank body 2, so that the inside of the entire water tank structure is a sealed cavity to meet the requirement of forming positive and negative air pressures in the water tank structure.

[0034] Refer to Figures 2 to 4, a fixing groove 11 is formed on the end face of the upper cover 1 of the water tank. The fixing groove 11 is annular and matches the opening of the water tank body 2. The seal 3 is arranged in the fixing groove 11. Specifically, the seal 3 is made of soft rubber, and the seal 3 includes a fixed end 31 and a free end 32. The fixed end 31 is annular and adapted to the fixing groove 11. The fixed end 31 is installed in the fixing groove 11, and the fixed end 31 is in interference fit with the bottom groove wall and the two side groove walls of the fixing groove 11; the free end 32 extends out of the fixing groove 11. When the upper cover 1 of the water tank is buckled on the water tank body 2, the free end 32 of the seal 3 is in interference fit with the upper end face of the water tank body 2.

[0035] In one embodiment, a ring-shaped protrusion 311 is arranged on the circumferential side of the fixed end 31 of the seal 3. The ring-shaped protrusion 311 is fixedly arranged around the outer peripheral side. The ring-shaped protrusion 311 can be arranged in one circle or multiple circles. When the fixing part is installed in the fixing groove 11, the ring-shaped protrusion 311 is in interference fit with the circumferential side groove wall of the fixing groove 11. The arrangement of the ring-shaped protrusion 311 further ensures the sealing performance between the seal 3 and the upper cover 1 of the water tank, and can increase the friction force between the seal 3 and the circumferential side groove wall of the fixing groove 11, making the installation connection between the seal 3 and the fixing groove 11 tighter and not easy to fall off.

[0036] Furthermore, the free end 32 of the seal 3 includes an inner layer structure 321 and an outer layer structure 322, and the inner layer structure 321 and the outer layer structure 322 are arranged back to back, that is, the cross section of the free end 32 is in a "person" - shaped structure. When the sewage is pumped out from the sealed water tank structure, the sealed water tank structure is in a negative pressure suction state. At this time, the outer layer structure 322 of the free end 32 is squeezed by the external air and tightly adsorbed on the upper end face of the water tank body 2. And as the negative pressure increases, it is adsorbed tighter and tighter, effectively ensuring the airtightness of the sealed water tank structure in the negative pressure state; when the sealed water tank structure discharges sewage, the sealed water tank structure is in a positive pressure blowing state. At this time, the inner layer structure 321 of the free end 32 of the seal 3 is adsorbed on the upper end face of the water tank body 2 and is in interference fit with it, and forms a reverse included angle with the direction of the air pressure acting force, effectively ensuring the airtightness of the sealed water tank structure in the positive pressure state.

[0037] Refer to Figure 4 and Figure 6 , even further, a ring of convex ribs 22 is fixedly connected to the side of the upper end face of the water tank body 2 facing the upper cover 1 of the water tank. The convex ribs 22 are arranged around the opening of the water tank body 2. In the positive pressure state, the inner layer structure 321 of the free end 32 of the seal 3 is tightly adsorbed on the convex ribs 22 and is in interference fit with it. The arrangement of the convex ribs 22 at the opening of the water tank body 2 enables the upper end face of the water tank body 2 and the seal 3 to cooperate better, further ensuring the sealing effect. In other embodiments, grooves can also be formed on the upper end face of the water tank body 2, so that the free end 32 of the seal 3 is in interference fit with the grooves in the sealed water tank structure in the positive pressure state or the negative pressure state, so as to further ensure the sealing purpose.

[0038] Referring to Figure 5 , in this embodiment, a plurality of reinforcing ribs 23 are fixedly connected to the side of the upper end surface of the water tank body 2 opposite to the water tank upper cover 1. The reinforcing ribs 23 are provided to enhance the structural strength of the upper end surface of the water tank body 2, thereby reducing the possibility that the opening deforms under the action of positive and negative air pressures and affecting the sealing performance.

[0039] Referring to Figure 2 and Figure 3 , in one embodiment, one side of the water tank upper cover 1 is rotatably connected to the water tank body 2. Specifically, a rotating shaft is rotatably connected to one side of the upper end surface of the water tank body 2, and the water tank upper cover 1 is rotatably connected to the rotating shaft. And a buckle 12 is provided on one side of the water tank upper cover 1, and a fastening portion 21 is provided at the corresponding position of the vertical body. Rotating the water tank upper cover 1 causes the water tank upper cover 1 to be fastened to the water tank body 2, so that the buckle 12 is clamped to the fastening portion 21 to realize the connection and fixation of the water tank upper cover 1 and the water tank body 2. Among them, the buckle 12 can be integrally formed with the upper cover, so that the buckle 12 is directly fastened to the fastening portion 21 when pressing down the water tank upper cover 1; the buckle 12 can also be separately provided from the upper cover. For example, the buckle 12 is rotatably connected to the water tank upper cover 1. When it is necessary to fix the water tank upper cover 1 and the water tank body 2, manually press the buckle 12 so that the buckle 12 is fastened to the fastening portion 21 on the water tank body 2.

[0040] Referring to Figure 6 and Figure 7, an air inlet / outlet column 24, a sewage suction column 25, and a sewage discharge column 26 are arranged inside the water tank body 2. The air inlet / outlet column 24, the sewage suction column 25, and the sewage discharge column 26 are located on the side away from the bottom inside the water tank body 2. When the sealed water tank structure is applied to a floor sweeper base station, the air inlet / outlet column 24 can be connected to the positive / negative air pressure conversion system of the floor sweeper base station through a silica gel hose. Through holes are provided on the air inlet / outlet column 24, and the positive / negative pressure conversion system is communicated with the inside of the water tank body 2 through the through holes on the air inlet / outlet column 24 to realize the formation of a positive pressure / negative pressure environment inside the sealed water tank structure; the sewage suction column 25 is connected to the sewage suction system of the floor sweeper base station. Sewage suction holes are provided on the sewage suction column 25, and the sewage extracted from the sewage suction system is discharged into the water tank body 2 through the sewage suction holes. In actual setting, a one-way valve can be connected between the sewage suction column 25 and the sewage suction system, and a tower-shaped sealing ring is arranged on the sewage suction hole and connected to the one-way valve. The one-way valve is set so that the sewage can only enter the water tank body 2 unidirectionally to ensure the sealing of the overall structure during sewage suction; the sewage discharge column 26 is connected to the sewage discharge system of the floor sweeper base station. A sewage discharge hose 261 is fixedly connected to the sewage discharge column 26. One end of the sewage discharge hose 261 away from the sewage discharge column 26 naturally hangs down to the bottom of the water tank body 2. The sewage discharge system is communicated with the inside of the water tank body 2 through the sewage discharge hose 261. In actual setting, a one-way valve is connected between the sewage discharge column 26 and the sewage discharge system, and a tower-shaped sealing ring is arranged on the sewage discharge column 26 and connected to the one-way valve. The one-way valve is set so that the sewage can only be discharged from the water tank body 2 unidirectionally to ensure the sealing of the overall structure during sewage discharge.

[0041] Furthermore, a clogging prevention head 262 is fixedly connected to one end of the sewage discharge hose 261 away from the sewage discharge column 26. The clogging prevention head 262 is in the shape of a hollow cylinder, and several convex blocks are fixedly connected to the bottom of the clogging prevention head 262. The clogging prevention head 262 is a rigid structure. The clogging prevention head 262 is provided to prevent the sewage discharge hose 261 from being sucked and pressed against the bottom of the water tank during sewage discharge, resulting in difficulty in sucking sewage, and effectively ensuring smooth sewage discharge. In other embodiments, the clogging prevention head 262 can have other structural forms, such as a hollow spherical structure, etc. In this application, the specific structural form of the clogging prevention head 262 is not uniquely limited as long as the above functions can be achieved.

[0042] Furthermore, a hose limiting block 27 is fixedly arranged at the bottom of the water tank body 2. The hose limiting block 27 limits the sewage discharge hose 261 to ensure that the hose can contact the bottom of the water tank body 2, which is beneficial to draining the sewage in the water tank body 2 completely. In one embodiment, the limiting block 27 is in the shape of an open enclosure, and one end of the sewage discharge hose 261 away from the sewage discharge column 26 is enclosed within the limiting block 27 to limit it.

[0043] In one embodiment, a handle 13 is fixedly connected to the side of the water tank upper cover 1 facing away from the water tank body 2. The handle 13 is provided to reduce the difficulty of carrying the sealed water tank.

[0044] The above is a specific description of the preferred embodiment of the present utility model. However, the present utility model is not limited to the described embodiment. Those skilled in the art can make various equivalent deformations or substitutions without departing from the spirit of the present utility model, and these equivalent deformations or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A sealed water tank structure that meets positive and negative air pressure, characterized in that: It includes a water tank body, a water tank upper cover and a sealing member; The water tank upper cover is provided with a fixing groove, the sealing member is arranged in the fixing groove, and the water tank upper cover is arranged on the water tank body; The sealing member comprises a fixed end and a free end, wherein the fixed end is interference-fitted with the fixed groove, and the free end extends out of the fixed groove, and when the water tank upper cover is covered on the water tank body, the free end is interference-fitted with the upper end surface of the water tank body; The water tank upper cover is provided with a buckle, and the water tank body is provided with a buckle portion adapted to the buckle; The water tank body is provided with air inlet and outlet columns, a sewage suction column and a sewage discharge column located on the side away from the bottom of the water tank body. The air inlet and outlet columns, the sewage suction column and the sewage discharge column are connected to the outside of the water tank body. The sewage discharge column is connected to a sewage discharge hose, and one end of the sewage discharge hose away from the sewage discharge column hangs down to the bottom of the water tank body.

2. A sealed water tank structure that meets positive and negative air pressures according to claim 1, characterized in that: One side of the water tank upper cover is rotatably connected to the water tank body.

3. A sealed water tank structure that meets positive and negative air pressures according to claim 1, characterized in that: The free end of the seal comprises an inner layer structure and an outer layer structure, and the cross section of the free end is a herringbone structure.

4. A sealed water tank structure that satisfies positive and negative air pressures according to claim 1, characterized in that: An annular protrusion is arranged on the peripheral side of the fixed end, and the annular protrusion is interference-fitted with the wall of the fixed groove.

5. A sealed water tank structure that meets positive and negative air pressures according to claim 1, characterized in that: The sealing member is made of soft rubber material.

6. A sealed water tank structure that meets positive and negative air pressures according to claim 1, characterized in that: A circle of ridges is fixedly provided on the upper end surface of the water tank body facing the water tank upper cover, and the free end of the sealing member is interference fit with the ridges.

7. A sealed water tank structure that meets positive and negative air pressures according to claim 1, characterized in that: A plurality of reinforcing ribs are fixedly connected to the side of the upper end surface of the water tank body facing away from the water tank upper cover.

8. A sealed water tank structure that meets positive and negative air pressures according to claim 1, characterized in that: An anti-blocking head is arranged at one end of the sewage discharge hose away from the sewage discharge column. The anti-blocking head is in the shape of a hollow cylinder, and a plurality of protrusions are arranged at the bottom of the anti-blocking head.

9. A sealed water tank structure that meets positive and negative air pressures according to claim 1, characterized in that: A hose limiting block for limiting the position of the sewage hose away from one end of the sewage column is arranged at the bottom of the water tank body.

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