Sewage backflow prevention structure applied to sewage tank

Abstract

A sewage backflow prevention structure applied to a sewage tank comprises a tank body and a tank cover, an air outlet is formed in the tank cover, a water inlet is formed in the bottom of the tank body and extends inwards to form a water inlet pipe, a filter plate is arranged in the tank body, filter holes are formed in the filter plate, and the water outlet end of the water inlet pipe is arranged on the upper side of the filter plate through the filter plate. The side, close to the user use side, of the filter plate inclines upwards, an elastic plate is fixedly arranged on the bottom side of the filter plate, the elastic plate is horizontally arranged, and the side, away from the user use side, of the elastic plate is fixedly connected with the filter plate. According to the scheme, the filter plate is obliquely arranged, and the horizontally arranged elastic plate is arranged on the bottom side of the filter plate, so that the sewage discharge space for filtering sewage is reserved between the elastic plate and the filter plate; when sewage flows backwards, the elastic plate is tightly attached to the bottom side of the filter plate under the action of surge, so that the filter holes are blocked, and the sewage is prevented from flowing back to the upper side of the filter plate through the filter holes; the structure is simple and ingenious, and the problem of sewage backflow is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of cleaning equipment, and particularly relates to a sewage anti-backflow structure applied to a sewage tank. Background Art

[0002] At present, the structure of a portable floor washer on the market is as follows: it includes a cleaning main body and a handle rod, and the cleaning main body and the handle rod are connected through a universal joint. A water tank, a sewage tank, a vacuum pump and other devices are installed on the handle rod. The structure of its sewage tank is mostly like this: it includes a box body, a box opening is formed on the box body, a water inlet pipe part and an air extraction pipe part are formed on the box body, and the air extraction pipe part extends into the box body, and the air extraction pipe part is between the water inlet pipe part and the box opening; when in use, the sewage tank is installed on the handle rod of the floor washer, a vacuum pump is installed below the sewage tank, the water inlet pipe part of the sewage tank is communicated with a sewage suction hole arranged on the cleaning main body through a water pipe, and the air extraction pipe part of the sewage tank is communicated with an air extraction port of the vacuum pump through an air passage, and the air passage is a cavity formed in the handle rod. The function of the sewage tank is to collect the sewage generated by the cleaning main body during the cleaning process. The sewage in the sewage tank is sucked away from the air extraction pipe part of the box body by the vacuum pump, so that a negative pressure is formed in the sewage tank to suck away the sewage generated by the cleaning main body during the cleaning process.

[0003] During actual use, it is often necessary to operate the cleaning equipment to lie flat when cleaning dead corners such as under the bed. In this use state, the sewage in the sewage tank is very likely to flow back into the vacuum motor, which will affect the service life of the vacuum motor.

[0004] Therefore, in view of the deficiencies of the prior art, it is necessary to design a sewage anti-backflow structure applied to the sewage tank to solve the above problems. Summary of the Utility Model

[0005] In order to overcome the above deficiencies in the prior art, the purpose of the present utility model is to provide a sewage anti-backflow structure applied to a sewage tank.

[0006] To achieve the above and other related objectives, the technical solution provided by the present utility model is: a sewage anti-backflow structure applied to a sewage tank, including a box body and a box cover hermetically covering the opening at the top of the box body. An air outlet communicating with the inside of the box body is provided on the box cover. An inlet is provided at the bottom of the box body, and the inlet extends into the box body to form a water inlet pipe. A filter plate is provided in the box body, and filter holes are provided on the filter plate. The water outlet end of the water inlet pipe passes through the filter plate and is arranged on the upper side of the filter plate. The side of the filter plate close to the user side is inclined upward. An elastic plate is fixedly provided on the bottom side of the filter plate. The elastic plate is horizontally arranged and the side far from the user side is fixedly connected to the filter plate. In the upright use state, there is a sewage discharge space for water flow to pass through between the elastic plate and the filter plate, and under the impact of water flow, the sewage discharge space will increase. In the lying use state, the elastic plate is pressed against the bottom side of the filter plate under the impact of sewage backflow and blocks the filter holes to prevent sewage backflow.

[0007] The preferred technical solution is: The elastic plate and the filter plate are fixed by snap connection. Snap columns are provided on the elastic plate, and snap holes are provided on the filter plate. The snap columns and the snap holes are correspondingly and matchingly arranged.

[0008] The preferred technical solution is: A water baffle is connected to the bottom side of the box cover, and the water baffle is located between the air outlet and the water outlet of the water inlet pipe.

[0009] The preferred technical solution is: A cover-shaped structure corresponding to the air outlet is provided on the bottom side of the box cover, and the opening of the cover-shaped structure is arranged in the opposite direction to the user side.

[0010] Due to the application of the above technical solution, the beneficial effects of the present utility model are:

[0011] The sewage anti-backflow structure applied to the sewage tank proposed by the present utility model, by arranging the filter plate obliquely and providing a horizontally arranged elastic plate on the bottom side of the filter plate, leaves a sewage discharge space for sewage filtration between the elastic plate and the filter plate. And when sewage backflow occurs, under the action of surging, the elastic plate will be closely attached to the bottom side of the filter plate, thereby blocking the filter holes and preventing sewage from flowing back to the upper side of the filter plate through the filter holes. This structure is simple and ingenious, and solves the problem of sewage backflow. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a cross-sectional view of the sewage tank related to the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0013] The following specific embodiments illustrate the implementation manners of the present utility model. Those skilled in the art can easily understand other advantages and effects of the present utility model from the content disclosed in this specification.

[0014] Please refer to Figure 1 . It should be noted that in the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance. The terms "horizontal", "vertical", "hanging", etc. do not mean that the components are required to be absolutely horizontal or hanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0015] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediate medium. It can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0016] Embodiment:

[0017] Such as Figure 1As shown, according to a general technical concept of the present utility model, there is provided an anti-backflow structure for sewage in a sewage tank, which includes a box body 1 and a box cover 2 hermetically disposed on the top opening of the box body 1. An air outlet 21 communicating with the inside of the box body is provided on the box cover 2. An inlet 11 is provided at the bottom of the box body 1, and the inlet 11 extends into the box body to form a water inlet pipe 12. A filter plate 3 is provided in the box body 1, and filter holes are provided on the filter plate 3. The water outlet end of the water inlet pipe 12 passes through the filter plate 3 and is disposed on the upper side of the filter plate 3. One side of the filter plate 3 close to the user side is inclined upward. An elastic plate 4 is fixedly provided on the bottom side of the filter plate 3. The elastic plate 4 is horizontally arranged and is fixedly connected to the filter plate 3 on the side far from the user side. In the upright use state, there is a sewage discharge space for water flow between the elastic plate 4 and the filter plate 3, and under the impact of water flow, one side of the elastic plate 4 close to the user side is inclined downward, so that the sewage discharge space will increase. In the lying use state, the elastic plate 4 is pressed against the bottom side of the filter plate 3 under the impact of sewage backflow, and the sewage discharge space is closed to prevent sewage backflow.

[0018] As Figure 1 shown, in an exemplary embodiment of the present utility model, the elastic plate 4 and the filter plate 3 are fixedly connected by buckling. Buckling columns are provided on the elastic plate 4, and buckling holes are provided on the filter plate 3. The buckling columns and the buckling holes are correspondingly and matchingly arranged.

[0019] As Figure 1 shown, in an exemplary embodiment of the present utility model, a water baffle 5 is connected to the bottom side of the box cover 2, and the water baffle 5 is located between the air outlet 21 and the water outlet of the water inlet pipe 12.

[0020] As Figure 1 shown, in an exemplary embodiment of the present utility model, a hood-like structure 22 corresponding to the air outlet 21 is provided on the bottom side of the box cover 2, and the opening of the hood-like structure 22 is arranged in the opposite direction to the user side.

[0021] Therefore, the present utility model has the following advantages:

[0022] The anti-backflow structure for sewage in a sewage tank proposed by the present utility model, by arranging the filter plate obliquely and providing a horizontally arranged elastic plate on the bottom side of the filter plate, leaves a sewage discharge space for sewage filtration between the elastic plate and the filter plate. And when sewage backflow occurs, under the action of surging, the elastic plate will be closely attached to the bottom side of the filter plate, thereby blocking the filter holes and preventing sewage from flowing back to the upper side of the filter plate through the filter holes. This structure is simple and ingenious, and solves the problem of sewage backflow.

[0023] The above embodiments are only illustrative of the principles and effects of the present utility model, and are not intended to limit the present utility model. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present utility model. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical idea disclosed by the present utility model should still be covered by the claims of the present utility model.

Claims

1. A sewage anti-backflow structure applied to a sewage tank, comprising a tank body and a tank cover hermetically covering the top opening of the tank body. An air outlet communicating with the inside of the tank body is provided on the tank cover. An inlet is provided at the bottom of the tank body, and the inlet extends into the tank body to form a water inlet pipe. A filter plate is provided in the tank body, and filter holes are provided on the filter plate. The water outlet end of the water inlet pipe passes through the filter plate and is arranged on the upper side of the filter plate, characterized in that: One side of the filter plate close to the user side is inclined upward. An elastic plate is fixedly provided at the bottom side of the filter plate. The elastic plate is horizontally arranged and the side far from the user side is fixedly connected to the filter plate. In the upright use state, there is a sewage discharge space allowing water flow between the elastic plate and the filter plate, and under the impact of water flow, the sewage discharge space will increase. In the lying use state, the elastic plate is pressed against the bottom side of the filter plate under the impact of sewage backflow, and the filter holes are blocked to prevent sewage backflow.

2. The sewage anti-backflow structure applied to the sewage tank according to claim 1, characterized in that: The elastic plate and the filter plate are fixed by buckling. The elastic plate is provided with buckle posts, and the filter plate is provided with buckle holes. The buckle posts and the buckle holes are correspondingly and matchingly arranged.

3. The sewage anti-backflow structure applied to the sewage tank according to claim 1, characterized in that: A water baffle is connected to the bottom side of the box cover. The water baffle is located between the air outlet and the water outlet of the water inlet pipe.

4. The sewage anti-backflow structure applied to the sewage tank according to claim 1, characterized in that: A cover-like structure corresponding to the air outlet is provided on the bottom side of the box cover. The opening of the cover-like structure is arranged in the opposite direction to the user side.

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