Anti-backflow closestool cover
By designing a toilet sleeve with threaded discharge holes and slots, combined with a threaded plunger, the problem of the existing toilet anti-counterflow device failing under high water pressure is solved, and effective countercurrent protection and convenient installation and use are achieved.
Patent Information
- Application Number
- CN202510161390.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-13
- Publication Date
- 2025-05-06
AI Technical Summary
The existing toilet anti-counterflow device is easily pressed out when the water pressure is too high, resulting in failure to prevent anti-counterflow.
A toilet sleeve with threaded discharge holes and slits is designed. The threaded discharge holes are close to the toilet discharge port, and the slits and the edges of the toilet are stuck to each other. Combined with the threaded cylindrical plugs, it can firmly block the threaded discharge holes and prevent countercurrent water from entering.
It effectively prevents water countercurrent caused by blockage of drainage main pipes, and has a simple structure, is easy to install and disassemble, and is quick to use.
Smart Images

Figure CN119933237A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to a toilet cover, in particular to an anti-backflow toilet cover. Background Art
[0002] Existing toilet backflow prevention mostly uses a soft product to be inserted into the toilet discharge port. However, this backflow prevention method will be pressed out when the water pressure is too high because the inner wall of the toilet is smooth, resulting in the failure of the backflow prevention. Summary of the invention
[0003] The technical problem to be solved by the present invention is to provide a toilet cover with a simple structure and capable of preventing water from flowing back out of a toilet drain outlet due to blockage of a main drainage pipe.
[0004] In order to solve the above technical problems, the present invention includes a main body, which will be close to the inner wall of the toilet after being inserted into the toilet. A threaded discharge hole is fixedly connected to the bottom of the main body, and the threaded discharge hole is close to the top of the toilet discharge port. In order to be able to firmly block the threaded discharge hole, a thread is provided on the inner side of the threaded discharge hole. In order to prevent the anti-backflow toilet sleeve from being pressed out of the toilet by the backflow water, a groove is fixedly connected to the top of the main body and is mutually locked with the inner side of the toilet edge. In order to facilitate the removal of the anti-backflow toilet sleeve, a toilet sleeve edge is fixedly connected above the groove. In order to be able to block the threaded discharge hole, a thread suitable for the threaded discharge hole is fixedly connected below the cylindrical plug. This kind of cylindrical plug with a threaded discharge hole and a cylindrical plug adapted thereto can screw the threaded end of the cylindrical plug into the threaded discharge hole, so as to prevent the water in the toilet discharge port from backflowing to the inside of the basin of the anti-backflow toilet sleeve.
[0005] It was found during the experiment that after the main body was inserted into the toilet, it was close to the inner wall of the toilet, which could prevent excessive backflow water from being trapped between the inner wall of the toilet and the main body of the anti-backflow toilet cover, while ensuring that there was enough space when the toilet was used normally.
[0006] Furthermore, a threaded discharge hole is fixedly connected to the bottom of the main body, which not only realizes the discharge function, but also makes up for the shortcoming that the toilet discharge port cannot prevent backflow due to its smoothness.
[0007] Furthermore, the main body is in a basin shape, and when in use, water will flow smoothly to the threaded discharge hole and then enter the toilet discharge port, thereby achieving the effects of convenience and hygiene in use and achieving a linear support effect.
[0008] Furthermore, a slot is fixedly connected to the upper part of the main body and is locked with the inner side of the toilet edge, which not only achieves the sealing effect of the slot edge when the main body is squeezed by water pressure, but also prevents the anti-backflow toilet cover from being pressed out of the toilet by the backflow water.
[0009] Furthermore, after a cylindrical plug with threads matching the threaded discharge hole is inserted into the threaded discharge hole, water in the toilet discharge port can be prevented from flowing back into the basin body of the anti-backflow toilet cover.
[0010] The present invention adopts this structure. When installing the anti-backflow toilet cover with the toilet, you only need to hold a handle with both hands and press them into the toilet at the same time. When the bottom of the handle is close to the edge above the toilet, it means that the slot has been locked with the inside of the toilet. When the anti-backflow toilet cover is separated from the toilet, because the inner edge of the toilet is an arc-shaped smooth surface and the anti-backflow toilet cover has a certain elasticity, you need to pull out the slot on one side with one hand, and then pull out the remaining slots to complete the disassembly. The present invention adopts this structure. When using the toilet, you can take out the cylindrical plug and use the toilet normally. When the toilet is not in use, you only need to reinsert the cylindrical plug into the threaded discharge hole to achieve the anti-backflow effect. The steps are simple during installation and disassembly, and the use process is simple and quick. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 It is a three-dimensional diagram of the cylindrical stopper of the present invention.
[0012] Figure 2 It is a front plan view of the present invention.
[0013] Figure 3 It is a side plan view of the present invention.
[0014] Figure 4 It is a schematic diagram of the installation of the present invention with a toilet when the cylindrical plug is plugged in.
[0015] Figure 5 It is a schematic diagram of the installation of the present invention with a toilet when the cylindrical plug is not plugged in. DETAILED DESCRIPTION
[0016] like Figure 1 , 2, 3, 4, 5 show an anti-backflow toilet cover, comprising a body 1, which will cling to the inner wall of the toilet 9 after being inserted into the toilet 9. A threaded discharge hole 2 is fixedly connected to the bottom of the body 1, and the threaded discharge hole 2 is close to the top of the toilet discharge port 11. In order to firmly block the threaded discharge hole 2, a thread is provided on the inner side of the threaded discharge hole 2. In order to prevent the anti-backflow toilet cover from being pressed out of the toilet 9 by the backflow water, a card slot 8 is fixedly connected to the top of the body 1 and is mutually locked with the inner side of the edge of the toilet 9. In order to facilitate the removal of the anti-backflow toilet cover, a toilet cover edge 5 is fixedly connected to the top of the card slot 8. In order to block the threaded discharge hole 2, a thread suitable for the threaded discharge hole 2 is fixedly connected to the bottom of the cylindrical plug 6. The threaded discharge hole 2 and the cylindrical plug 6 matched therewith can be screwed into the threaded discharge hole 2 at one threaded end of the cylindrical plug 6, thereby preventing the water in the toilet discharge port 11 from flowing back into the basin body 1 of the anti-backflow toilet set.
[0017] It was found in the experiment that after the main body 1 is inserted into the toilet 9, it is close to the inner wall of the toilet 9, which can prevent excessive backflow water from being sandwiched between the inner wall of the toilet 9 and the main body 1 of the anti-backflow toilet cover, and can also ensure that there is enough space when the toilet 9 is used normally.
[0018] Furthermore, a threaded discharge hole 2 is fixedly connected to the bottom of the main body 1, which not only realizes the discharge function, but also makes up for the shortcoming that the toilet discharge port 11 cannot prevent backflow due to its smoothness.
[0019] Furthermore, the main body 1 is in a basin shape, and when in use, water will flow smoothly to the threaded discharge hole 2 and then enter the toilet discharge port 11. It not only achieves the effect of convenient and hygienic use, but also achieves the linear support effect.
[0020] Furthermore, a slot 8 is fixedly connected above the main body 1 and is locked with the inner side of the edge of the toilet 9, which not only achieves a sealing effect on the edge of the slot 8 when the main body 1 is squeezed by water pressure, but also prevents the anti-backflow toilet cover from being pressed out of the toilet 9 by the backflow water.
[0021] Furthermore, after the cylindrical plug 6 with threads matching the threaded discharge hole 2 is inserted into the threaded discharge hole 2, the water in the toilet discharge port 11 can be prevented from flowing back into the basin body 1 of the anti-backflow toilet set.
[0022] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments and various changes can be made thereto within the knowledge scope of ordinary technicians in this field.
Claims
1. An anti-backflow toilet cover, comprising a body (1), characterized in that: A threaded discharge hole (2) is fixedly connected to the bottom of the body (1), a slot (8) is fixedly connected to the top of the body (1), and a toilet rim (5) is fixedly connected to the top of the slot (8). A thread (7) suitable for the threaded discharge hole (2) is fixedly connected to the bottom of the cylindrical plug (6).
2. The anti-backflow toilet cover according to claim 1, characterized in that: The body (1) is in the shape of a basin.
3. The anti-backflow toilet cover according to claim 1, characterized in that: A threaded discharge hole (2) is fixedly connected to the bottom of the body (1).
4. The anti-backflow toilet cover according to claim 1, characterized in that: The threaded discharge hole (2) is threaded.
5. The anti-backflow toilet cover according to claim 1, characterized in that: A slot (8) is fixedly connected to the upper portion of the main body (1).
6. The anti-backflow toilet cover according to claim 1, characterized in that: The thread (7) fixedly connected to the bottom of the cylindrical plug (6) is compatible with the thread of the threaded discharge hole (2) on the body (1).