Sewage tank and cleaning equipment thereof

Abstract

The utility model is applicable to the technical field of surface cleaning equipment, in particular to a sewage tank, which comprises a tank body and a tank cover arranged on the tank body, a sewage cavity is arranged in the tank body, a sewage suction pipe is arranged in the sewage cavity, an air suction channel is arranged on the tank cover, the air suction channel is communicated with the sewage cavity, and the sewage suction pipe is communicated with the sewage cavity. The end, close to the tank cover, of the sewage cavity is provided with a partition part, the partition part divides the corresponding sewage cavity into a first partition cavity and a second partition cavity, the air suction channel is communicated with the first partition cavity, and the sewage suction pipe extends into the second partition cavity. The first partition cavity is provided with a first cavity body close to the air suction channel and a second cavity body away from the air suction channel, and the cross section area of the first cavity body is smaller than that of the second cavity body. Impurities of the HEPA filter of the sewage tank can be reduced, so that the service life of the HEPA filter is prolonged. The utility model further provides cleaning equipment applying the sewage tank, and the cleaning equipment has the same beneficial effects.

Description

Technical Field

[0001] The utility model belongs to the technical field of surface cleaning equipment, and in particular relates to a sewage tank and cleaning equipment thereof. Background Art

[0002] As a new type of household cleaning tool, floor scrubbers have been increasingly recognized and used in daily life. At present, most floor scrubbers on the market are equipped with a sewage tank, a sewage suction pipe, an air suction channel, and a HEPA filter. When in use, the debris (very fine dust) in the sewage suction pipe is easily sucked into the air suction channel (accompanied by air flow) and contaminated by the HEPA filter, resulting in a short service life of the HEPA filter. Utility Model Content

[0003] One of the purposes of the utility model is to provide a sewage tank, aiming to solve the technical problem that the HEPA filter of the existing sewage tank is easily contaminated with debris and has a short service life.

[0004] The technical solution of the utility model is achieved as follows: a sewage tank comprises a tank body and a tank cover arranged on the tank body, a sewage cavity is arranged in the tank body, a sewage suction pipe is arranged in the sewage cavity, an air suction channel is arranged on the tank cover, the air suction channel is connected to the sewage cavity, a partition is arranged at one end of the sewage cavity close to the tank cover, the partition divides the sewage cavity corresponding to it into a first compartment and a second compartment, the air suction channel is connected to the first compartment, the sewage suction pipe extends into the second compartment, the first compartment is provided with a first cavity close to the air suction channel and a second cavity away from the air suction channel, and the cross-sectional area of ​​the first cavity is smaller than the cross-sectional area of ​​the second cavity.

[0005] Optionally, the second compartment is provided with a third cavity located on the side where the sewage suction pipe is located and a fourth cavity located on the opposite side of the sewage suction pipe, and the cross-sectional area of ​​the third cavity is smaller than the cross-sectional area of ​​the fourth cavity.

[0006] Optionally, a cross-sectional area of ​​the third cavity is smaller than a cross-sectional area of ​​the second cavity.

[0007] Optionally, the partition and the box cover adopt an integrated structural design.

[0008] Optionally, the partition portion includes a flat plate portion located in the middle and bent portions located on both sides of the flat plate portion, and the bent portions are convex toward one side of the second compartment and concave toward one side of the first compartment.

[0009] Optionally, the position where the bending portion protrudes toward the third cavity in the second compartment is more protruding than the position where the bending portion protrudes toward the fourth cavity.

[0010] Optionally, a sewage detection column is further included, which is connected to the box cover and extends into the sewage cavity along the concave side area of ​​the zigzag portion.

[0011] Optionally, the side edge of the curved portion is tightly fitted with the inner wall of the sewage chamber.

[0012] Optionally, a handle position which is concave inwardly is provided on the box body at a position corresponding to the first cavity of the first compartment.

[0013] Another object of the utility model is to provide a cleaning device, comprising a sewage tank, wherein the sewage tank is used to receive sewage generated when the cleaning device is working, and the sewage tank is set to be any sewage tank as described above.

[0014] The sewage tank of the utility model sets the first compartment connected to the air intake channel as the first and second cavities with a small cross-sectional area at one end and a large cross-sectional area at the other end, and utilizes the principle that the air flow velocity in the area with a large cross-sectional area is smaller than that in the area with a small cross-sectional area, so that the impurity gas to be sucked into the air intake channel is sucked into the first compartment at a lower speed, thereby helping more debris to fall back into the sewage tank by their own weight, and reducing the debris that is finally sucked into the air intake channel and contaminated on the HEPA filter, thereby extending the service life of the HEPA filter.

[0015] The utility model also provides a cleaning device using the sewage tank, which has the same beneficial effects.

[0016] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A cross-sectional view of a sewage tank provided by an embodiment of the utility model;

[0018] Figure 2 A top view of section AA of a sewage tank provided by an embodiment of the utility model;

[0019] Figure 3 A three-dimensional view of section AA of a sewage tank provided by an embodiment of the utility model;

[0020] Figure 4 A top view of section BB of a sewage tank provided by an embodiment of the utility model;

[0021] Figure 5 A three-dimensional view of section BB of a sewage tank provided by an embodiment of the utility model;

[0022] Figure 6 A three-dimensional diagram of a sewage tank cover and a partition provided in an embodiment of the utility model.

[0023] The names and numbers of the components in the figure are:

[0024] 10. Box body; 20. Box cover; 30. Sewage suction pipe; 40. Partition; 50. Sewage detection column; 11. First compartment; 12. Second compartment; 13. Handle position; 21. Air suction channel; 41. Flat plate; 42. Bent portion; 111. First cavity; 112. Second cavity; 121. Third cavity; 122. Fourth cavity. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0026] Please refer to the attached Figure 1-6 As shown, a sewage tank provided by an embodiment of the utility model includes a tank body 10 and a tank cover 20 arranged on the tank body 10, a sewage cavity is provided in the tank body 10, a sewage suction pipe 30 is provided in the sewage cavity, an air suction channel 21 is provided on the tank cover 20, the air suction channel 21 is connected to the sewage cavity, and a partition 40 is provided at one end of the sewage cavity close to the tank cover 20, the partition 40 divides the sewage cavity corresponding to it into a first compartment 11 and a second compartment 12, the air suction channel 21 is connected to the first compartment 11, the sewage suction pipe 30 extends into the second compartment 12, the first compartment 11 is provided with a first cavity 111 close to the air suction channel 21 and a second cavity 112 away from the air suction channel 21, and the cross-sectional area of ​​the first cavity 111 is smaller than the cross-sectional area of ​​the second cavity 112. Preferably, the second compartment 12 is provided with a third cavity 121 located on the side where the sewage suction pipe 30 is located and a fourth cavity 122 located on the opposite side of the sewage suction pipe 30 , and the cross-sectional area of ​​the third cavity 121 is smaller than that of the fourth cavity 122 .

[0027] During operation, sewage is sucked out from the sewage suction pipe 30, and most of the sewage and debris will naturally fall to the bottom of the sewage tank due to their weight. However, due to the drive of the air flow, some sewage and debris will be mixed in the air flow. At this time, due to the structural design of the first compartment 11 and the second compartment 12, and according to the general principle that the same air flow has a slow flow velocity in an area with a large cross-sectional area and a fast flow velocity in an area with a small cross-sectional area, it can be known that in the second compartment 12, the air flow velocity in the fourth cavity 122 will be smaller than the air flow velocity in the third cavity 121, and in the first compartment 11, the air flow velocity in the second cavity 112 will be smaller than the air flow velocity in the first cavity 111. Therefore, when the mixed airflow comes out of the sewage suction pipe 30, it first enters the fourth cavity 122 and flows upward at a relatively small flow rate (smaller than that in the third cavity 121), thereby avoiding excessive sewage and impurities from impacting and adhering to the top of the second compartment 12 (too many impurities adhering to the top of the second compartment 12 will also bring a bad experience to the user); then, the mixed airflow turns to enter the third cavity 121, and flows downward at a relatively large flow rate (larger than that in the fourth cavity 122), until it rushes out of the third cavity 121 and turns to flow into the second cavity 112 in a certain area. The mixed airflow in the third cavity 121 will make the debris inside have a downward speed, and this downward speed will help these debris and sewage fall quickly to the bottom of the sewage tank. Therefore, it can be understood that, theoretically, if the airflow speed in the third cavity 121 is larger (the larger the cross-sectional area of ​​the third cavity 121 is required), the mixed airflow will flow downward to the bottom of the sewage tank. The smaller the cross-sectional area of ​​the third cavity 121 is, the more it helps sewage and debris to fall into the sewage tank, and the less debris is mixed in the airflow. Therefore, in actual application, technicians can make the cross-sectional area of ​​the third cavity 121 as small as possible under the premise of being achievable; then the mixed airflow turns to enter the second cavity 112. At this time, due to the effect of the third cavity 121, the debris in the mixed airflow in the second cavity 112 is much less than the debris in the mixed airflow in the third cavity 121. Similarly, in the second cavity 112, the mixed airflow flows upward at a relatively small flow rate (smaller than that in the first cavity 111), so that a part of the debris in the mixed airflow has the opportunity to fall back to the bottom of the sewage tank; finally, the mixed airflow flows from the second cavity 112 into the first cavity 111, and finally flows into the air intake channel 21. At this time, the mixed airflow passes through the HEPA filter arranged in the air intake channel 21, so that the debris in the mixed airflow is filtered and attached to the HEPA filter. By setting the fast downward airflow (faster than that in the fourth cavity 122 ) in the third cavity 121 and the slow upward airflow (slower than that in the first cavity 111 ) in the second cavity 112 , impurities mixed in the airflow are reduced to a minimum.

[0028] Optionally, the cross-sectional area of ​​the third cavity 121 is smaller than the cross-sectional area of ​​the second cavity 112. At this time, it can be seen from the above that the above design makes the flow rate of the airflow (downward) in the third cavity 121 faster than the flow rate of the airflow (upward) in the second cavity 112, that is, the effect of driving the debris downward in the second compartment 12 is greater than the effect of driving the debris upward in the first compartment 11, which will further increase the ability of separating the debris from the airflow. It can be understood that in actual design, the difference between the cross-sectional area of ​​the third cavity 121 and the cross-sectional area of ​​the second cavity 112 can be increased as much as possible to achieve the best effect.

[0029] The partition 40 and the box cover 20 adopt an integrated structural design, so that the partition 40 can be installed and removed along with the box cover 20, which is easy to operate.

[0030] The partition 40 includes a flat plate 41 in the middle and zigzag portions 42 on both sides of the flat plate 41. The zigzag portions 42 are convex toward the second compartment 12 and concave toward the first compartment 11. By setting the flat plate 41, the width of the second compartment 12 on one side of the flat plate 41 is sufficient to accommodate the sewage suction pipe 30 and have a certain gap for the passage of air, sewage and larger debris. The flat plate 41 is arranged in a relatively parallel position corresponding to the vertically arranged sewage suction pipe 30 without interference. The zigzag portions 42 are arranged in accordance with the principle that the first compartment 11 is set as large as possible and the second compartment 12 is set as small as possible. Therefore, the zigzag portions 42 are used on both sides of the flat plate 41 to divide the areas on both sides into the areas of the first compartment 11 as much as possible.

[0031] Further, the position where the zigzag portion 42 bulges toward the third cavity 121 in the second compartment 12 is more convex than the position where the zigzag portion 42 bulges toward the fourth cavity 122, that is, the zigzag portion 42 bulges more at the position where it bulges toward the third cavity 121, so that the cross-sectional area of ​​the zigzag portion 42 bulges more at the position where it bulges toward the fourth cavity 122, so that the cross-sectional area of ​​the zigzag portion 42 bulges smaller. Since the cross-sectional area of ​​the zigzag portion 42 bulges toward the third cavity 121 is large and the cross-sectional area of ​​the zigzag portion 42 bulges toward the fourth cavity 122 is small, the cross-sectional area of ​​the third cavity 121 is smaller than the cross-sectional area of ​​the fourth cavity 122. Therefore, this configuration is one of the implementations of realizing that the cross-sectional area of ​​the third cavity 121 is smaller than the cross-sectional area of ​​the fourth cavity 122.

[0032] Furthermore, it also includes a sewage detection column 50 , which is connected to the box cover 20 and extends into the sewage cavity along the concave side area of ​​the bending portion 42 . It should be noted that the partition 40 is provided as a flat plate 41 and a zigzag portion 42 is provided on both sides of the flat plate 41, and the zigzag portion 42 is more convex in the second compartment 12 toward the third cavity 121 than in the fourth cavity 122, thereby achieving the purpose of making the cross-sectional area of ​​the third cavity 121 smaller than the cross-sectional area of ​​the fourth cavity 122, while satisfying the design principle of setting the first compartment 11 as large as possible and the second compartment 12 as small as possible as much as possible. At this time, the sewage detection column 50 is arranged in the concave side area along the zigzag portion 42, so that the distance between the falling sewage and the sewage detection column 50 is further away by utilizing the more convex structure of the zigzag portion 42 at the lower end (i.e., the position where the zigzag portion 42 convex toward the third cavity 121 in the second compartment 12), thereby being more helpful in preventing the sewage detection column 50 from false alarms (why the farther the sewage detection column 50 is separated from the sewage, the smaller the probability of false alarms is, which is disclosed in other patent applications of the applicant and will not be repeated here). Therefore, the structural arrangement of the zigzag portion 42 has the above-mentioned triple beneficial effects.

[0033] The side of the curved portion 42 fits tightly with the inner wall of the sewage chamber, so that there is no gap at the junction of the side of the curved portion 42 and the inner wall of the sewage chamber, and air cannot pass through; the air can only flow out from the lower end of the second compartment 12, and then flow into the first compartment 11 from the lower end of the first compartment 11; and the fitting arrangement does not produce a connection between each other, and under the premise of maintaining the above-mentioned sealing requirements, the curved portion 42 and the inner wall of the sewage chamber can slide relative to each other, so that when the box cover 20 is disassembled and assembled, it can be achieved (the box cover 20 and the dividing portion (curved portion 42) are integrated).

[0034] An inwardly concave handle position 13 is provided on the box body 10 at a position corresponding to the first cavity 111 of the first compartment 11. The inwardly concave design can be used to reduce the area of ​​the first cavity 111 of the first compartment 11, thereby achieving the design requirement that the cross-sectional area of ​​the first cavity 111 is smaller than the cross-sectional area of ​​the second cavity 112; while being inwardly concave, a recessed position is formed on the outside, which is used as the handle position 13 of the box body 10, and is used as a gripping structure for people to hold the box body 10, which is an ingenious design that kills two birds with one stone.

[0035] On the other hand, this embodiment further discloses a cleaning device, including a sewage tank, wherein the sewage tank is used to receive sewage generated when the cleaning device is working, and the sewage tank is configured as the sewage tank described above.

[0036] In summary, the sewage tank of the utility model sets the first compartment 11 connected to the air intake channel 21 as the first and second cavities 112 with a small cross-sectional area at one end and a large cross-sectional area at the other end, and utilizes the principle that the airflow velocity in the area with a large cross-sectional area is smaller than that in the area with a small cross-sectional area, so that the impurity gas to be sucked into the air intake channel 21 is sucked into the first compartment 11 at a lower speed, thereby helping more debris to fall back into the sewage tank by its own weight, and reducing the debris that is finally sucked into the air intake channel 21 and contaminated on the HEPA filter, thereby extending the service life of the HEPA filter. A cleaning device using the above-mentioned sewage tank provided in this embodiment has the same beneficial effect.

[0037] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0038] The above-mentioned embodiments only express several implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A sewage tank, comprising a tank body and a tank cover arranged on the tank body, wherein the tank body is provided with a sewage cavity, the sewage cavity is provided with a sewage suction pipe, the tank cover is provided with an air suction channel, the air suction channel is connected to the sewage cavity, and is characterized in that: A partition is provided at one end of the sewage chamber close to the box cover, and the partition divides the corresponding sewage chamber into a first compartment and a second compartment. The air suction channel is connected to the first compartment, and the sewage suction pipe extends into the second compartment. The first compartment is provided with a first cavity close to the air suction channel and a second cavity away from the air suction channel, and the cross-sectional area of ​​the first cavity is smaller than the cross-sectional area of ​​the second cavity.

2. The sewage tank according to claim 1, characterized in that: The second compartment is provided with a third cavity located at the side where the sewage suction pipe is located and a fourth cavity located at the opposite side of the sewage suction pipe, and the cross-sectional area of ​​the third cavity is smaller than the cross-sectional area of ​​the fourth cavity.

3. The sewage tank according to claim 2, characterized in that: The cross-sectional area of ​​the third cavity is smaller than the cross-sectional area of ​​the second cavity.

4. The sewage tank according to claim 1, characterized in that: The partition and the box cover adopt an integrated structural design.

5. The sewage tank according to claim 1, characterized in that: The partition part includes a flat plate part located in the middle and a zigzag part located at both sides of the flat plate part, and the zigzag part is convex toward one side of the second compartment and concave toward one side of the first compartment.

6. The sewage tank according to claim 5, characterized in that: The position where the bending portion protrudes toward the third cavity in the second compartment is more protruding than the position where the bending portion protrudes toward the fourth cavity.

7. The sewage tank according to claim 6, characterized in that: It also includes a sewage detection column, which is connected to the box cover and extends into the sewage cavity along the concave side area of ​​the zigzag portion.

8. The sewage tank according to claim 5, characterized in that: The side edge of the bent portion is tightly fitted to the inner wall of the sewage chamber.

9. The sewage tank according to claim 1, characterized in that: A handle position which is concave inwards is provided on the box body at a position corresponding to the first cavity of the first compartment.

10. A cleaning device, comprising a sewage tank, the sewage tank being used to receive sewage generated when the cleaning device is working, characterized in that: The sewage tank is configured as a sewage tank as described in any one of claims 1-9.

Images