Sewage tank capable of stabilizing sewage flow and cleaning machine

Abstract

The utility model discloses a sewage tank capable of stabilizing sewage flow and a cleaning machine. The sewage tank comprises a sewage tank body internally provided with a sewage cavity, a sewage inlet pipe located in the sewage cavity, an air outlet pipe located in the sewage cavity and arranged in parallel with the sewage inlet pipe, air inlet and outlet assemblies arranged on the sewage inlet pipe and the air outlet pipe, and a floater assembly arranged on the air outlet pipe and capable of sealing air inlet of the air outlet pipe. The air inlet and outlet assembly comprises a diffusion cover arranged on the outer side of the sewage inlet pipe in a sleeving mode and an air outlet cover arranged on the outer side of the air outlet pipe in a sleeving mode, the diffusion cover is in clearance fit with the sewage inlet pipe, and the minimum distance between sewage coming out of the sewage inlet pipe and the outer side of the floater assembly is larger than 2 mm. The utility model has the advantages that sewage is prevented from splashing down on the floater when coming out of the sewage inlet pipe, the floater is ensured to rise in time to trigger protection, the sewage is prevented from polluting the environment again, the residual sewage and peculiar smell are reduced, and the user experience is improved.

Description

Technical Field

[0001] This utility model relates to the field of household wet cleaning, and in particular to a sewage tank and cleaning machine with stable sewage flow. Background Technology

[0002] Currently, cleaning machines use a wastewater tank to collect dirty liquid. However, when the wastewater enters the tank under the action of the vacuum motor, the water level rises rapidly and is easily splashed onto the float. This prevents the float from rising in time to trigger the protection mechanism, resulting in a high probability that the wastewater will be discharged back into the already cleaned area, requiring users to clean repeatedly. Moreover, wastewater will remain in the air outlet duct for a long time, which can easily breed bacteria and produce odors, affecting user experience. Similar technology can be found in Chinese utility model patent CN219089086U, so it is necessary to improve it. Utility Model Content

[0003] To address the aforementioned technical problems, the purpose of this utility model is to provide a sewage tank and cleaning machine that can stabilize sewage flow, preventing sewage from splashing downwards onto the float when it comes out of the sewage inlet pipe, ensuring that the float rises in time to trigger protection, avoiding sewage re-polluting the environment, reducing sewage residue and odor, and improving user experience.

[0004] To achieve the purpose of this utility model, the first technical solution provided by this utility model is: a sewage tank capable of stabilizing sewage flow, which includes a sewage tank body with a sewage chamber inside, an inlet pipe located in the sewage chamber, an outlet pipe located in the sewage chamber and arranged parallel to the inlet pipe, an air inlet / outlet assembly arranged on the inlet pipe and the outlet pipe, and a float assembly arranged on the outlet pipe and capable of sealing the air inlet of the outlet pipe. The air inlet / outlet assembly includes a diffuser sleeved on the outside of the inlet pipe and an outlet hood sleeved on the outside of the outlet pipe. The diffuser sleeve is fitted with the inlet pipe with a gap, and the minimum distance between the sewage coming out of the inlet pipe and the outside of the float assembly is greater than 2 mm.

[0005] Based on the above technical solution, the following supplementary technical solutions are further included:

[0006] The inlet pipe includes a first inlet end and a second inlet end, wherein the second inlet end has a first diameter; and the diffusion shroud includes a first diffusion end, a second diffusion end that allow the inlet pipe to be inserted, and a diffusion cavity located between the first diffusion end and the second diffusion end, wherein the distance between the second inlet end and the second diffusion end is at least 1.5 times the first diameter.

[0007] The first diameter is greater than or equal to 20 mm, and the diameter of the first diffusion end is greater than the diameter of the second diffusion end, and is at least 1.5 times the first diameter.

[0008] The length of the second inlet end extending into the diffusion cavity is at least twice the diameter of the first inlet end.

[0009] The second inlet end extends into the diffusion cavity and splits into two sides. The gap between the side of the second inlet end closer to the outlet pipe and the inner wall of the diffusion hood is smaller than the gap between the side of the second inlet end farther from the outlet pipe and the inner wall of the diffusion hood.

[0010] To achieve the purpose of this utility model, the second technical solution provided by this utility model is: a cleaning machine, which includes a cleaning machine body, a clean water tank disposed on the cleaning machine body, a wastewater tank body disposed on the cleaning machine body, and a water spray component connected to the clean water tank. The wastewater tank body includes a wastewater tank body with a wastewater chamber inside, a wastewater inlet pipe located in the wastewater chamber, an air outlet pipe located in the wastewater chamber and arranged parallel to the wastewater inlet pipe, an air inlet / outlet assembly disposed on the wastewater inlet pipe and the air outlet pipe, and a float assembly disposed on the air outlet pipe and capable of sealing the air inlet of the air outlet pipe. The air inlet / outlet assembly includes a diffuser sleeved on the outside of the wastewater inlet pipe and an air outlet hood sleeved on the outside of the air outlet pipe.

[0011] The float assembly includes a float cavity through which an air outlet pipe passes, a first float guide frame located on one side of the float cavity, and a second float guide frame located on the other side of the float cavity, wherein the second float guide frame has a float cover plate, and the air outlet hood has an air inlet that can be covered by the float cover plate.

[0012] The diffuser has a trapezoidal cross-section that is smaller at the top and larger at the bottom, and the exhaust pipe includes a first exhaust end that is covered by the exhaust hood and a second exhaust end located below the first exhaust end.

[0013] The diffuser and the exhaust hood are integrally injection molded.

[0014] The air vent includes a guide post located below the air inlet, and the first float guide frame is provided with a first float guide groove, while the second float guide frame is provided with a second float guide groove. The guide post can pass through either the first float guide groove or the second float guide groove. The extension direction of the first float guide groove is parallel to the center direction of the air vent pipe, while the extension direction of the guide post is perpendicular to the extension direction of the first float guide groove.

[0015] Compared with the prior art, the present invention has the following positive effects: it prevents sewage from splashing downwards onto the float when it comes out of the sewage inlet pipe, ensures that the float rises in time to trigger protection, avoids sewage from re-polluting the environment, reduces sewage residue and odor, and improves user experience. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is an exploded perspective view of the first embodiment of the present invention;

[0018] Figure 2 This is a cross-sectional view of the first embodiment of the present invention;

[0019] Figure 3 for Figure 1 3D view of the central air intake and exhaust assembly;

[0020] Figure 4 for Figure 3 3D view of the mid-float assembly;

[0021] Figure 5 This is a perspective view of the second embodiment of the present invention, in which the sewage tank and the cleaning machine body are separated from each other. Detailed Implementation

[0022] In the description of this utility model, it should be noted that, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and for simplification, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0024] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0025] Example: Figure 1-4 As shown, this utility model discloses a first embodiment of a sewage tank capable of stabilizing sewage flow, which includes a sewage tank body 100 with a sewage chamber 120 inside, an inlet pipe 140 located in the sewage chamber 120, an outlet pipe 160 located in the sewage chamber 120 and arranged parallel to the inlet pipe 140, an air inlet / outlet assembly arranged on the inlet pipe 140 and the outlet pipe 160, and a float assembly 500 arranged on the outlet pipe 160 and capable of sealing the air inlet of the outlet pipe 160. The air inlet / outlet assembly includes a diffuser 300 sleeved on the outside of the inlet pipe 140 and an outlet hood 400 sleeved on the outside of the outlet pipe 160. The diffuser hood 300 is clearance-fitted with the inlet pipe 140 and the minimum distance WE between the sewage coming out of the inlet pipe 140 and the outside of the float assembly 500 is greater than 2 mm.

[0026] The sewage tank body 100 has a roughly D-shaped cross-section and is made of injection-molded material. Both the sewage inlet pipe 140 and the vent pipe 160 are integrally formed with the sewage tank body 100. The sewage inlet pipe 140 includes a first sewage inlet end 142 and a second sewage inlet end 144, wherein the second sewage inlet end 144 has a first diameter WA, and the first diameter WA is greater than or equal to 20 mm. The vent pipe 160 includes a first vent outlet end 162 and a second vent outlet end 164, both shielded by a vent hood 400. The first vent outlet end 162 is located above the second vent outlet end 164. The central axes of the sewage inlet pipe 140 and the vent pipe 160 are parallel to each other.

[0027] The diffuser shroud 300 has a trapezoidal cross-section, smaller at the top and larger at the bottom. The diffuser shroud 300 includes a first diffuser end 320 for inserting a sludge inlet pipe 140, a second diffuser end 340, and a diffuser cavity 304 located between the first diffuser end 320 and the second diffuser end 340. The distance WC between the second diffuser end 144 and the second diffuser end 340 is at least 1.5 times the first diameter WA. The diameter WB of the first diffuser end 320 is larger than the diameter of the second diffuser end 340 and is at least 1.5 times the first diameter WA. The length WD of the second diffuser end 144 extending into the diffuser cavity 304 is at least twice the first diameter WA. The second diffuser end 144 extends into the diffuser cavity 304 and is divided into two sides. The gap between the side of the second diffuser end 144 closer to the vent pipe 160 and the inner wall of the diffuser shroud 300 is smaller than the gap between the side of the second diffuser end 144 farther from the vent pipe 160 and the inner wall of the diffuser shroud 300. The diffuser shroud 300 and the exhaust shroud 400 are integrally injection molded. The diffuser chamber 304 diffuses, slows down, and guides the incoming water flow into the wastewater chamber 120. The wastewater inlet pipe 140 is inserted into the diffuser chamber 304, with a circumferential gap between it and the inner wall of the diffuser shroud 300. The diffuser shroud 300 surrounds the wastewater inlet pipe 140 and covers the second wastewater inlet end 144. The inner wall of the diffuser shroud 300 forms an acute angle with the direction of wastewater inflow. The second diffuser end 340 has a smooth, continuous, and tangential streamline shape, which slows down, diffuses, and drips the wastewater along the inner wall of the diffuser shroud 300. This effectively separates the wastewater from the air during the process from the second wastewater inlet end 144 to the outlet of the diffuser chamber 304 (i.e., within the length WD). Furthermore, due to the minimum spacing WE, the wastewater flowing into the outside of the wastewater inlet pipe 140 is prevented from splashing onto the float assembly 500.

[0028] The exhaust hood 400 includes a guide post 408 located below the air inlet 404. A first float guide frame 520 is provided with a first float guide groove 524, and a second float guide frame is provided with a second float guide groove 544. The guide post 408 can pass through either the first float guide groove 524 or the second float guide groove 544. The extending direction of the first float guide groove 524 is parallel to the center direction of the exhaust pipe 160, while the extending direction of the guide post 408 is perpendicular to the extending direction of the first float guide groove 524. The downstream end of the air inlet 404 is connected to the interior of the first exhaust end 162, and the interior of the second exhaust end 164 is connected to the downstream end of the first exhaust end 162. The bottoms of the first exhaust end 142 and the second exhaust end 164 are on the same plane.

[0029] Based on the first embodiment, combined with Figure 5As shown, this utility model discloses a second embodiment of a cleaning machine, which includes a cleaning machine body 10 with a vacuum source, a clean water tank 20 disposed on the cleaning machine body 10, a wastewater tank body 100 disposed on the cleaning machine body 10, and a water spraying component 30 connected to the clean water tank 20, wherein the wastewater tank body 100 is the wastewater tank in the first embodiment. The vacuum source is a motor.

[0030] The float assembly 500 includes a float cavity 504 through which the vent pipe 160 passes, a first float guide 520 located on one side of the float cavity 504, and a second float guide 540 located on the other side of the float cavity 504, wherein the second float guide 540 has a float cover 548, and the vent hood 400 has an air inlet 404 that can be shielded by the float cover 548.

[0031] During operation, the user sprays the cleaning solution from the clean water tank 20 onto the dirty floor using the spray nozzle. The dirty liquid is then collected by the suction attachment and returned to the inlet pipe 140. Due to the smooth, continuous, and tangential streamlined shape of the diffuser end 340, the wastewater slows down, diffuses, and drips along the inner wall of the diffuser shroud 300. This effectively separates the wastewater from the air as it flows from the inlet end 144 to the outlet of the diffuser chamber 304 (within the length WD). Furthermore, the first diameter WA, the diameter WB of the first diffuser end 320, and the distance between the inlet end 144 and the diffuser end 340 contribute to the effective separation of the wastewater from the air. The presence of parameters such as WC, the length WD of the second end 144 of the sewage inlet extending into the diffusion cavity 304, and the minimum spacing WE ensures that when sewage flows into the outside of the sewage inlet pipe 140, it avoids splashing onto the float assembly 500, allowing the float assembly 500 to react more reliably and quickly, preventing excessive sewage from flowing into the sewage chamber 120 and the cleaning machine body 10; during the process, the float assembly 500 in the sewage chamber 120 rises synchronously with the water surface, providing timely protection; at the same time, it solves the problems of residual sewage on the ground after each use of the machine, and the long-term residual sewage in the machine's air outlet duct, which breeds bacteria and produces odors.

[0032] The advantages of this invention are: it prevents sewage from splashing downwards onto the float when it comes out of the sewage inlet pipe, ensures that the float rises in time to trigger protection, avoids sewage from re-polluting the environment, reduces sewage residue and odor, and improves user experience.

[0033] The above are merely preferred embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any modifications and improvements made by those skilled in the art without departing from the inventive concept of the present utility model should be covered within the protection scope of the present utility model.

Claims

1. A sewage tank which is stable against sewage, characterized in that It includes: The sewage tank body (100) has a sewage cavity (120) inside, the sewage inlet pipe (140) is located in the sewage cavity (120), the air outlet pipe (160) is located in the sewage cavity (120) and arranged parallel to the sewage inlet pipe (140), the air inlet and outlet assembly is arranged on the sewage inlet pipe (140) and the air outlet pipe (160), and the float assembly (500) is arranged on the air outlet pipe (160) and can close the air inlet of the air outlet pipe (160), wherein the air inlet and outlet assembly includes a diffusion cover (300) sleeved outside the sewage inlet pipe (140) and an air outlet cover (400) sleeved outside the air outlet pipe (160), and the diffusion cover (300) is in gap cooperation with the sewage inlet pipe (140) and the minimum distance between the sewage outlet of the sewage inlet pipe (140) and the outside of the float assembly is greater than 2mm.

2. The foul water stable flow foul water tank of claim 1, wherein: The sewage inlet pipe (140) includes a sewage inlet first end (142) and a sewage inlet second end (144), wherein the sewage inlet second end (144) has a first diameter; and the diffusion cover (300) includes a diffusion first end (320) allowing the sewage inlet pipe (140) to be inserted, a diffusion second end (340), and a diffusion cavity (304) between the diffusion first end (320) and the diffusion second end (340), wherein the distance between the sewage inlet second end (144) and the diffusion second end (340) is at least 1.5 times the first diameter.

3. A foul water tank according to claim 2, wherein: The first diameter is greater than or equal to 20mm, and the diameter of the diffusion first end (320) is greater than the diameter of the diffusion second end (340) and at least 1.5 times the first diameter.

4. A foul water tank according to claim 3, wherein: The length of the sewage inlet second end (144) extending into the diffusion cavity (304) is at least 2 times the first diameter.

5. The foul water stable flow foul water tank of claim 3, wherein: The sewage inlet second end (144) extends into the diffusion cavity (304) and is divided into two sides, and the gap between the side of the sewage inlet second end (144) close to the air outlet pipe (160) and the inner wall of the diffusion cover (300) is smaller than the gap between the side of the sewage inlet second end (144) away from the air outlet pipe (160) and the inner wall of the diffusion cover (300).

6. A cleaning machine characterized by It includes a cleaning machine body (10), a clean water tank (20) arranged on the cleaning machine body (10), a sewage tank body (100) arranged on the cleaning machine body (10), and a water spraying element (30) in communication with the clean water tank (20), wherein the sewage tank body (100) includes: a sewage tank body (100) having a sewage cavity (120) inside, a sewage inlet pipe (140) located in the sewage cavity (120), an air outlet pipe (160) located in the sewage cavity (120) and arranged parallel to the sewage inlet pipe (140), an air inlet and outlet assembly arranged on the sewage inlet pipe (140) and the air outlet pipe (160), and a float assembly (500) arranged on the air outlet pipe (160) and capable of closing the air inlet of the air outlet pipe (160), wherein the air inlet and outlet assembly includes a diffusion cover (300) sleeved outside the sewage inlet pipe (140) and an air outlet cover (400) sleeved outside the air outlet pipe (160).

7. The cleaning machine of claim 6, wherein: The float assembly (500) comprises a float cavity (504) allowing the air outlet pipe (160) to pass through, a first float guide frame (520) on one side of the float cavity (504), and a second float guide frame (540) on the other side of the float cavity (504), wherein the second float guide frame (540) has a float cover plate (548), and the air outlet cover (400) has an air inlet (404) which can be shielded by the float cover plate (548).

8. The cleaning machine of claim 6, wherein: The cross section of the diffusion cover (300) is trapezoidal with a small upper end and a large lower end, wherein the air outlet pipe (160) comprises an air outlet first end (162) shielded by the air outlet cover (400), and an air outlet second end (164) below the air outlet first end (162).

9. The cleaning machine of claim 6, wherein: The diffusion cover (300) and the air outlet cover (400) are integrally injection molded.

10. The cleaning machine of claim 7, wherein: The air outlet cover (400) comprises a guide column (408) below the air inlet (404), and the first float guide frame (520) is provided with a first float guide slot (524), and the second float guide frame is provided with a second float guide slot (544), wherein the guide column (408) can pass through the first float guide slot (524) or the second float guide slot (544), wherein the extension direction of the first float guide slot (524) is parallel to the center direction of the air outlet pipe (160), and the extension direction of the guide column (408) is perpendicular to the extension direction of the first float guide slot (524).

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