Floor drain core

Abstract

The utility model provides a floor drain core, and belongs to the field of drainage. The floor drain core comprises a shell and a one-way valve, the one-way valve is hinged to the bottom of the shell, the one-way valve can seal an opening in the bottom of the shell, the floor drain core is characterized by comprising a first magnetic block, a second magnetic block and a limiting structure, the first magnetic block is fixed to the shell, and the second magnetic block is located at the hinged end of the one-way valve; the first magnetic block and the second magnetic block interact to enable the one-way valve to have a reset trend. And the floor drain core realizes a side-opening magnetic attraction structure.

Description

Technical Field

[0001] The utility model belongs to the field of drainage and relates to a floor drain core. Background Art

[0002] The floor drain core is an important component in the sewage discharge system, mainly including a shell and a one-way flap. The one-way flap can block the opening at the lower end of the shell. From the current situation, there are three reset methods for the one-way flap: counterweight, torsion spring and magnetic attraction. They are explained one by one below. The first counterweight positioning, such as the application number 2021308594494 applied by the applicant on April 1, 2022, is named the appearance design patent of the drain core. From its three-dimensional diagram, it can be observed that the blue counterweight blocks are located on both sides of the bottom. The counterweight blocks are connected to the one-way flap, and the one-way flap is hinged on the shell. The principle is that when discharging sewage, the one-way flap is opened downward by gravity to realize sewage discharge. After the sewage discharge is completed, the counterweight block is lowered to realize the reset of the one-way flap. There are many problems with this method. First of all, the weight requirements of the counterweight block are relatively strict. Too light will result in poor sealing, and too heavy will result in insufficient opening of the one-way flap. Secondly, the counterweight block is easy to limit the maximum opening range of the one-way flap due to volume problems. In addition, there is also the problem of insufficient reset speed. The second type is torsion spring reset, that is, the one-way flap and the shell are hinged through a torsion spring. This method is relatively simple in structure, but there is a problem of gradually increasing difficulty in opening the one-way flap, and there is a limit to the opening range. Secondly, since the floor drain core has been working in a humid environment for a long time, the torsion spring is prone to rust and fail; the third type is a magnetic suction structure. At present, the magnetic suction structure is often used in upper and lower closed structures, such as the utility model patent with application number 2019218419889 and application date October 30, 2019, named as the automatic opening and closing structure assembly of the umbrella cover in the floor drain core. Combined with its specification and it can be seen that although its scheme uses a bipolar dual-zone drive design, it subverts the traditional working principle that only relies on the repulsion of like poles, greatly enhancing the reset speed and sealing effect of the umbrella cover, but in principle, the umbrella cover is the one-way flap mentioned above, and the umbrella cover is opened and closed by the up and down movement of the magnetic suction structure. This structure is the application of the magnetic upper and lower closed structure, and its application in the side opening field has not yet been explored.

[0003] In order to solve the above problems, this application is proposed. Utility Model Content

[0004] The utility model aims to solve the above problems existing in the prior art and provides a floor drain core, which realizes a side-opening magnetic attraction structure and solves the problems that the existing floor drain core magnetic attraction structure is an up-and-down structure and lacks a side-opening structure.

[0005] The object of the present utility model can be achieved by the following technical solutions: a floor drain core, including a housing and a one-way flap, the one-way flap is hinged to the bottom of the housing, the one-way flap can seal the opening at the bottom of the housing, and is characterized in that it includes a first magnet and a second magnet, the first magnet is fixed on the housing, the second magnet is located at the hinged end of the one-way flap, and further includes a limiting structure that can limit the maximum opening angle of the one-way flap, and the first magnet and the second magnet interact to make the one-way flap have a reset tendency.

[0006] This floor drain core adopts a side-opening magnetic attraction structure to realize the reset of the one-way flap. The side-suction structure has the advantages of small resistance and good reset tightness. In this solution, the first magnet and the second magnet cooperate with each other to make the one-way flap have a reset tendency. Here, the reset tendency has two meanings. One is when the one-way flap is closed, at this time, the first magnet and the second magnet interact to keep the one-way flap always closed. The other is when discharging sewage, after the one-way flap is opened, the first magnet and the second magnet interact to make the one-way flap have a reset tendency. After the sewage discharge is over, the one-way flap quickly resets by this tendency.

[0007] In the above floor drain core, the first magnet has a first S surface and a first N surface, the first S surface is the bottom surface, and the two sides of the second magnet are respectively a second N surface and a second S surface. The first S surface and the second N surface can attract each other, and when attracting each other, the one-way flap has a reset tendency.

[0008] The S / N surface is only a relative expression. In practice, the S surface can be set as the N surface, and vice versa. The first magnet is fixed. Whether the one-way flap is opened or closed, the first S surface and the second N surface can always attract each other, and the mutual attraction makes the one-way flap have a tendency to fit the bottom of the housing.

[0009] In the above floor drain core, the first magnet is inclined relative to the second magnet. When the one-way flap is closed, the lower end of the second magnet is away from the first magnet, and the second magnet is located below the first magnet and is vertically arranged.

[0010] The position settings of the first magnet and the second magnet can better realize magnetic surface adsorption. From the perspective of the movement trajectory, when the one-way flap is opened, the second magnet rotates towards the lower end of the first magnet, and the second N surface always faces the lower end of the first magnet. During the process, the first S surface and the second N surface always maintain an attracting state, and the attracting force gives the second magnet a counterclockwise force, thereby driving the one-way flap to reset.

[0011] In the above floor drain core, it further includes a cover, the cover is arranged on the housing, and the cover shields the first magnet, the second magnet and the hinged end.

[0012] The cover has a shielding effect and can largely protect the components.

[0013] In the above-mentioned floor drain core, the limiting structure is a first limiting portion protruding from the hinged end of the one-way flap, and the first limiting portion can abut against the housing or the first magnet.

[0014] The function of the limiting structure is to limit the maximum effective opening angle of the one-way flap. Without the limiting structure, the one-way flap will continue to open outward. Continuing to open will cause a repulsive force between the first S surface and the second S surface, causing the one-way flap to open outward automatically and unable to reset. The specific action mode of the first limiting portion is that when the one-way flap is opened to the limit position, the first limiting portion has a blocking effect, thereby preventing the second magnet from exceeding the limit position.

[0015] In the above-mentioned floor drain core, a third magnet is further included. The two sides of the third magnet are a third S surface and a third N surface respectively. The third N surface and the second S surface attract each other. When attracting each other, the one-way flap has a reset tendency. When the one-way flap is opened, it has a first state position and a second state position. The first state position is that the first S surface and the second N surface form an attractive force to make the one-way flap have a reset tendency, and the second state position is that the first S surface and the second S surface form a repulsive force to make the one-way flap have an opening tendency.

[0016] Specifically: After the one-way flap is opened, it is divided into two stages. In the first stage, the first magnet and the second magnet are always in the first state position, that is, the reset tendency of the one-way flap is realized through the mutual attraction mechanism of the first S surface and the second N surface; in the second stage, the first magnet and the second magnet are always in the second state position, that is, when the one-way flap continues to open beyond the limit position mentioned above, a repulsive force is generated by the interaction between the first S surface and the tilted second S surface (at this time, the second N surface turns to the lower side), but the existence of the third magnet forms an attractive force between the third N surface and the second S surface, and the attractive force is greater than the repulsive force. Therefore, even if the second magnet generates a repulsive force after the limit position, the second magnet can still be pulled back through the attractive force, thereby resetting the one-way flap. When the second magnet is pulled back until the second N surface and the first S surface re-form an attraction, the one-way flap can be quickly reset under the action of the two attractive forces. While the reset is accelerated, the sealing performance of the one-way flap is stronger when it is closed. Most importantly, by continuing to open the one-way flap outward, the sewage discharge diameter is increased and the sewage discharge efficiency is enhanced.

[0017] In the above-mentioned floor drain core, the third magnet is vertically arranged on one side of the second magnet.

[0018] That is, the third N surface and the second S surface are corresponding surfaces.

[0019] In the above-mentioned floor drain core, the limiting structure is a second limiting portion, and the second limiting portion is located at the bottom of the cover.

[0020] In this solution, in addition to the conventional shielding function, the limiting part two on the cover provides a limit for the one-way flap after it is opened, preventing the second S surface from continuing to flip and losing the attractive force with the third N surface, forming a repulsive force, and ultimately causing the one-way flap to fail to reset. The limiting structure of this solution is transferred from the hinge end to the outer end, changing the original limit position setting, and improving the maximum effective opening stroke of the one-way flap with the cooperation of the third magnet.

[0021] In the above-mentioned floor drain core, the third magnet is fixed inside the cover.

[0022] The cover also has the function of installing the third magnet.

[0023] Compared with the prior art, the floor drain core has the following advantages:

[0024] 1. The floor drain core of this solution uses a side-opening magnetic attraction structure to realize the reset of the one-way flap. The side-suction structure has the advantages of small resistance and good reset tightness.

[0025] 2. The floor drain core of this solution has a three-magnet solution. The one-way flap of this solution can be quickly reset. While accelerating the reset, the one-way flap has stronger tightness when closed, and by continuing to open the one-way flap outward, the sewage discharge diameter is increased and the sewage discharge efficiency is enhanced.

[0026] 3. The floor drain core of this solution cleverly utilizes the principle of attraction and repulsion between magnets, especially some ingenious designs at the limit positions, making full use of the magnetic attraction structure and having a delicate design. Description of the Drawings

[0027] Figure 1 It is a structural sectional view of the second embodiment.

[0028] Figure 2 It is an exploded view of the structure of the second embodiment.

[0029] Figure 3 It is a schematic structural diagram of the cover in the second embodiment.

[0030] Figure 4 is Figure 1 The enlarged structural view of area A in.

[0031] Figure 5 It is a partial structural schematic diagram after the one-way flap in the second embodiment is fully opened.

[0032] Figure 6 It is a structural sectional view of the first embodiment.

[0033] Figure 7 is Figure 6 The enlarged structural view of area B in.

[0034] List of Reference Numerals

[0035] In the figure, 1. Housing;

[0036] 2. One-way valve;

[0037] 2a. Hinged end;

[0038] 2a1. First limiting part;

[0039] 3. First magnetic block;

[0040] 3a. First S surface;

[0041] 3b. First N surface;

[0042] 4. Second magnetic block;

[0043] 4a. Second N surface;

[0044] 4b. Second S surface;

[0045] 5. Cover;

[0046] 5a. Second limiting part;

[0047] 6. Third magnetic block;

[0048] 6a. Third S surface;

[0049] 6b. Third N surface. Detailed implementation manners

[0050] Embodiment 1

[0051] As Figure 6 and Figure 7 shown, the local leakage core includes a housing 1 and a one-way valve 2. The one-way valve 2 is hinged to the bottom of the housing 1. The one-way valve 2 can seal the bottom opening of the housing 1. It includes a first magnetic block 3 and a second magnetic block 4. The first magnetic block 3 is fixed on the housing 1. The second magnetic block 4 is located at the hinged end 2a of the one-way valve 2. It also includes a limiting structure that can limit the maximum opening angle of the one-way valve 2. The first magnetic block 3 and the second magnetic block 4 interact to make the one-way valve 2 have a reset tendency. The local leakage core adopts a side-opening magnetic attraction structure to realize the reset of the one-way valve 2. The side-suction structure has the advantages of small resistance and good reset tightness. In this solution, the first magnetic block 3 and the second magnetic block 4 cooperate with each other to make the one-way valve 2 have a reset tendency. Here, the reset tendency has two meanings. One is when the one-way valve 2 is closed, at this time, the first magnetic block 3 and the second magnetic block 4 interact to make the one-way valve 2 always closed. The other is when the one-way valve 2 is opened during sewage discharge, the first magnetic block 3 and the second magnetic block 4 interact to make the one-way valve 2 have a reset tendency. After the sewage discharge is completed, the one-way valve 2 quickly resets by virtue of this tendency.

[0052] The first magnetic block 3 has a first S surface 3a and a first N surface 3b. The first S surface 3a is the bottom surface. On both sides of the second magnetic block 4 are a second N surface 4a and a second S surface 4b respectively. The first S surface 3a and the second N surface 4a can attract each other. When they attract each other, the one-way flap 2 has a resetting tendency. The S / N surface is only a relative expression. In practice, the S surface can be set as the N surface and vice versa. The first magnetic block 3 is fixed. Whether the one-way flap 2 is open or closed, the first S surface 3a and the second N surface 4a can always attract each other, and the mutual attraction makes the one-way flap 2 tend to fit the bottom of the housing 1. Relative to the second magnetic block 4, the first magnetic block 3 is inclined. When the one-way flap 2 is closed, the low end of the second magnetic block 4 is far from the first magnetic block 3, and the second magnetic block 4 is located below the first magnetic block 3 and is vertically arranged. The position settings of the first magnetic block 3 and the second magnetic block 4 can better realize magnetic surface adsorption. In terms of the movement trajectory, when the one-way flap 2 is opened, the second magnetic block 4 rotates towards the low end of the first magnetic block 3, and the second N surface 4a always faces the low end of the first magnetic block. During the process, the first S surface 3a and the second N surface 4a always maintain an attracting state, and the attracting force gives the second magnetic block a counterclockwise force, thereby driving the one-way flap 2 to reset. It further includes a cover 5. The cover 5 is covered on the housing 1, and the cover 5 shields the first magnetic block 3, the second magnetic block 4, and the hinged end 2a. The cover 5 has a shielding effect and can largely protect the components.

[0053] The limiting structure is a first limiting portion 2a1 protruding from the hinged end 2a of the one-way flap 2. The first limiting portion 2a1 can abut against the housing 1 or the first magnetic block 3. The function of the limiting structure is to limit the maximum effective opening angle of the one-way flap 2. Without the limiting structure, the one-way flap 2 will continue to open outwards, and if it continues to open, the first S surface 3a and the second S surface 4b will generate a repulsive force, causing the one-way flap 2 to automatically open outwards and unable to reset. The specific action mode of the first limiting portion 2a1 is that when the one-way flap 2 is opened to the limit position, the first limiting portion 2a1 has a blocking effect, thereby preventing the second magnetic block 4 from exceeding the limit position.

[0054] Embodiment 2

[0055] As Figures 1 to 5As shown in the figure, the third magnetic block 6 is further included in this embodiment. On both sides of the third magnetic block 6 are the third S surface 6a and the third N surface 6b respectively. The third N surface 6b and the second S surface 4b attract each other. When they attract each other, the one-way valve 2 has a resetting tendency. When the one-way valve 2 is opened, it has a first state position and a second state position. The first state position is that the first S surface 3a and the second N surface 4a form an attractive force to make the one-way valve 2 have a resetting tendency, and the second state position is that the first S surface 3a and the second S surface 4b form a repulsive force to make the one-way valve 2 have an opening tendency. Specifically: after the one-way valve 2 is opened, it is divided into two stages. In the first stage, the first magnetic block 3 and the second magnetic block 4 are always in the first state position, that is, the resetting tendency of the one-way valve 2 is realized through the mutual attraction mechanism of the first S surface 3a and the second N surface 4a; in the second stage, the first magnetic block 3 and the second magnetic block 4 are always in the second state position, that is, when the one-way valve 2 continues to open beyond the previously mentioned limit position, the first S surface 3a interacts with the tilted second S surface 4b to generate a repulsive force (at this time, the second N surface 4a turns to the lower side), but the presence of the third magnetic block 6 forms an attractive force between the third N surface 6b and the second S surface 4b, and the attractive force is greater than the repulsive force. Therefore, even if the second magnetic block 4 generates a repulsive force after the limit position, the second magnetic block 4 can still be pulled back through the attractive force, thereby resetting the one-way valve 2. When the second magnetic block 4 is pulled back until the second N surface 4a and the first S surface 3a re-form an attraction, the one-way valve 2 can be quickly reset under the action of the two attractive forces. While accelerating the reset, the one-way valve 2 has stronger sealing performance when closed. Most importantly, by continuously opening the one-way valve 2 outward, the sewage discharge diameter is increased and the sewage discharge efficiency is enhanced.

[0056] The third magnetic block 6 is vertically arranged on one side of the second magnetic block 4. That is, the third N and the second S surface 4b are corresponding surfaces. The limiting structure is the second limiting part 5a, and the second limiting part 5a is located at the bottom of the cover 5. In this solution, in addition to the conventional shielding function, the second limiting part 5a on the cover 5 provides a limit for the one-way valve 2 after it is opened, preventing the second S surface 4b from continuing to flip and losing the attractive force with the third N surface 6b, forming a repulsive force, and finally resulting in the inability of the one-way valve 2 to reset. The limiting structure of this solution is transferred from the hinge end 2a to the outer end, changing the original limit position setting, and improving the maximum effective opening stroke of the one-way valve 2 with the cooperation of the third magnetic block 6. The third magnetic block 6 is fixed in the cover 5. The cover 5 also has the function of installing the third magnetic block 6.

[0057] In the first embodiment and the second embodiment, a groove is provided on the housing 1 for fixing the first magnetic block 3, and a groove is provided on the hinge end 2a for fixing the second magnetic block 4.

[0058] The detailed structures, specific component dimensions and principles not mentioned in this application document are all well-known common knowledge in the art or can be obtained by those skilled in the art through simple selection, and will not be elaborated.

[0059] The specific embodiments described herein are merely illustrative of the spirit of the present utility model. Those skilled in the art to which the present utility model pertains may make various modifications or supplements to the described specific embodiments or use similar means for substitution, but they will not deviate from the spirit of the present utility model or exceed the scope defined by the appended claims.

Claims

1. A floor drain core, comprising a shell and a one-way flap, wherein the one-way flap is hinged to the bottom of the shell, and the one-way flap can seal the bottom opening of the shell, characterized in that: It includes a first magnetic block and a second magnetic block, the first magnetic block is fixed on the shell, the second magnetic block is located at the hinged end of the one-way flap, and also includes a limiting structure that can limit the maximum opening angle of the one-way flap. The first magnetic block and the second magnetic block interact with each other to make the one-way flap have a reset tendency.

2. The floor drain core according to claim 1, characterized in that The first magnetic block has a first S surface and a first N surface, the first S surface is the bottom surface, and the second magnetic block has a second N surface and a second S surface on both sides respectively. The first S surface and the second N surface can attract each other, and the one-way flap has a tendency to reset when attracted to each other.

3. The floor drain core according to claim 2, characterized in that: The first magnetic block is tilted relative to the second magnetic block. When the one-way flap is closed, the second magnetic block is away from the lower end of the first magnetic block. The second magnetic block is located below the first magnetic block and is vertically arranged.

4. The floor drain core according to claim 2, characterized in that: It also includes a cover, which is arranged on the shell and covers the first magnetic block, the second magnetic block and the hinged end.

5. The floor drain core according to claim 3, characterized in that: The limiting structure is a limiting portion 1 protruding from the hinged end of the one-way flap, and the limiting portion 1 can be abutted against the shell or the first magnetic block.

6. The floor drain core according to claim 4, characterized in that: It also includes a third magnetic block, with a third S surface and a third N surface on both sides of the third magnetic block, respectively. The third N surface and the second S surface attract each other, and the one-way flap has a reset tendency when attracted to each other. When the one-way flap is opened, it has a first state position and a second state position. The first state position is that the first S surface and the second N surface form a mutual attraction force so that the one-way flap has a reset tendency, and the second state position is that the first S surface and the second S surface form a mutual repulsion force so that the one-way flap has an opening tendency.

7. The floor drain core according to claim 6, characterized in that: The third magnetic block is vertically arranged on one side of the second magnetic block.

8. The floor drain core according to claim 7, characterized in that: The limiting structure is a second limiting portion, and the second limiting portion is located at the bottom of the cover.

9. The floor drain core according to claim 6, characterized in that: The third magnetic block is fixed in the cover.

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