Drainage device

Abstract

This invention provides a drainage device comprising a housing assembly, a valve plate, and a magnetic attraction assembly. The housing assembly has a flow channel, and the valve plate is elastic. When the valve plate is in a closed state, it separates the inlet and outlet of the flow channel; when the valve plate is in an open state, the inlet and outlet are interconnected. The magnetic attraction assembly includes a first connecting block and a second connecting block, at least one of which is magnetic. The first connecting block is connected to the valve plate, and the second connecting block is connected to the housing assembly. The drainage device of this invention may further include a counterweight and a connecting rod assembly. The weight of the counterweight is transmitted to the valve plate through the connecting rod assembly, and the weight of the counterweight also helps to keep the valve plate in a closed state. Because the valve plate is kept in a closed state by its own elasticity and the magnetic force of the magnetic attraction assembly, this drainage device has a good backflow prevention effect.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of drainage, in particular to a drainage device. BACKGROUND

[0002] There is a floor drain in the prior art, which can allow indoor water to flow into a drainage pipe through the floor drain and prevent odor in the drainage pipe from flowing back to the indoor. However, in the prior art, such a floor drain only relies on the elasticity of the valve piece itself to achieve sealing, and the backflow prevention effect of such a floor drain is not good. SUMMARY

[0003] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application provides a drainage device, the valve piece of which is kept in a closed state under the action of its own elasticity and the magnetic force of a magnetic assembly, and the backflow prevention effect of the drainage device is better.

[0004] According to the drainage device of the present application, the drainage device comprises a housing assembly provided with a flow channel, the two ends of the flow channel being an inlet and an outlet respectively; a valve piece having elasticity, the valve piece being connected with the housing assembly, the valve piece having an open state and a closed state, the valve piece separating the inlet and the outlet when the valve piece is in the closed state, the inlet and the outlet being in communication with each other when the valve piece is in the open state, a fluid entering the flow channel from the inlet being able to switch the valve piece from the closed state to the open state; and a magnetic assembly comprising a first connecting block and a second connecting block, at least one of the first connecting block and the second connecting block having magnetism, the first connecting block being connected with the valve piece, the second connecting block being connected with the housing assembly, the magnetic force of the second connecting block applied to the first connecting block and the elasticity of the valve piece both being used to keep the valve piece in the closed state.

[0005] According to the drainage device of the present application, at least the following beneficial effects are achieved: the drainage device of the present application keeps the valve piece in the closed state through the elasticity of the valve piece itself and the magnetic force provided by the magnetic assembly, the elasticity of the valve piece and the magnetic force provided by the magnetic assembly together achieve the sealing of the drainage device, and compared with the prior art, the sealing effect and the backflow prevention effect of the drainage device of the present application are better.

[0006] According to some embodiments of the present application, the valve piece comprises a tapered portion located in the flow channel, one end of the tapered portion is connected with the housing assembly, and the other end of the tapered portion is used to abut against the wall of the flow channel to separate the inlet and the outlet; the tapered portion comprises an outer tapered surface, and the inner side of the tapered portion is provided with a cavity, the outer tapered surface is used to contact the fluid entering the flow channel from the inlet, and the cavity wall and the outer tapered surface are arranged opposite to each other, and both the outer tapered surface and the cavity wall gradually converge towards the central axis of the flow channel from the outlet to the inlet.

[0007] According to some embodiments of the present application, the first connecting block is located outside the second connecting block, and the second connecting block and the first connecting block repel each other; or the second connecting block is located outside the first connecting block, and the second connecting block and the first connecting block attract each other.

[0008] According to some embodiments of the present application, the housing assembly comprises a body provided with the flow channel, the flow channel is vertically arranged, the top end of the flow channel is the inlet, and the bottom end of the flow channel is the outlet; a grate is installed at the inlet, and the grate is provided with a plurality of first through holes; a filter screen is located below the grate and arranged in the flow channel, the filter screen is provided with a plurality of second through holes, the top end of the valve piece is connected with the filter screen, and the second connecting block is connected with the filter screen or the body.

[0009] According to some embodiments of the present application, the drainage device further comprises a connecting rod assembly, the housing assembly comprises a connecting cylinder having a central passage penetrating through both ends, the central passage is at least a part of the flow channel, and at least a part of the valve piece is located in the central passage; a counterweight is connected with the second connecting block or the connecting cylinder, the counterweight and the valve piece are connected with the connecting rod assembly, and the gravity of the counterweight is used to keep the valve piece in the closed state.

[0010] According to some embodiments of the present application, the second connecting block is connected with the counterweight, the first connecting block is arranged outside the second connecting block, and the second connecting block and the first connecting block repel each other; or the second connecting block is connected with the connecting cylinder, the second connecting block is arranged outside the first connecting block, and the second connecting block and the first connecting block attract each other.

[0011] According to some embodiments of the present application, the first connecting block is embedded in the interior of the valve piece, and the second connecting block is embedded in the interior of the counterweight.

[0012] According to some embodiments of the present application, the counterweight is capable of being lifted relative to the connecting cylinder, the valve sheet surrounds the counterweight, and the linkage assembly comprises: linkages, a plurality of which are arranged in a circumferential direction of the counterweight, one end of each of the linkages close to a central axis of the flow passage is an inner end of the linkage, one end of each of the linkages away from the central axis is an outer end of the linkage, the inner end of the linkage is rotatably connected to the counterweight, and the inner end of the linkage is higher than the outer end of the linkage; skeletons, a plurality of which are arranged in the circumferential direction of the counterweight, each of the linkages is connected to one of the skeletons, the valve sheet is connected to the skeletons, and the outer end of the linkage is rotatably connected to the skeleton.

[0013] According to some embodiments of the present application, the shell assembly further comprises a central column, the central column is fixedly connected to the connecting cylinder, the central column is located in the central passage, and the connecting cylinder and the central column are both vertically arranged; the counterweight is slidably sleeved outside the central column, a top end of the valve sheet is connected to the central column, and a bottom end of the valve sheet is used for abutting against the connecting cylinder to separate the inlet and the outlet.

[0014] According to some embodiments of the present application, the shell assembly further comprises: a body, the connecting cylinder is connected to a bottom end of the body, the connecting cylinder and the body jointly define the flow passage, the inlet is located at a top end of the body, and the outlet is located at a bottom end of the connecting cylinder; a grate is installed at the inlet, the grate is provided with a plurality of first through holes; and a filter screen is arranged in the flow passage, the filter screen is located below the grate and above the valve sheet, and the filter screen is provided with a plurality of second through holes.

[0015] Additional aspects and advantages of the present application will be given in part in the following description, become apparent from the following description, or be understood through practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a schematic view of the drainage device of the first embodiment of the present application;

[0017] Figure 2 It is an exploded view of the drainage device of the first embodiment of the present application;

[0018] Figure 3 It is a sectional view of the drainage device of the first embodiment of the present application when the valve sheet is in a closed state;

[0019] Figure 4 It is a sectional view of the drainage device of the first embodiment of the present application when the valve sheet is in an open state;

[0020] Figure 5 It is a schematic view of the drainage device of the second embodiment of the present application;

[0021] Figure 6 An exploded view of the drain device of the second embodiment of the present application;

[0022] Figure 7 A schematic view of the valve piece of the second embodiment of the present application;

[0023] Figure 8 A sectional view of the drain device of the second embodiment of the present application when the valve piece is in the closed state;

[0024] Figure 9 A sectional view of the drain device of the second embodiment of the present application when the valve piece is in the open state;

[0025] Figure 10 An enlarged schematic view of the A area in the middle; Figure 8

[0026] Figure 11 A schematic view of the connecting relationship between the link assembly and the counterweight of the second embodiment of the present application;

[0027] Figure 12 A schematic view of the counterweight of the second embodiment of the present application.

[0028] Reference signs:

[0029] 100 - drain device, 101 - body, 102 - grate, 103 - first through hole, 104 - filter screen, 105 - second through hole, 106 - flow channel, 107 - inlet, 108 - shell assembly, 109 - connecting part, 110 - tapered part, 111 - valve piece, 112 - outlet, 113 - magnetic attraction assembly, 114 - second connecting block, 115 - first connecting block, 116 - middle axis, 117 - cavity, 118 - cavity wall, 119 - outer tapered surface;

[0030] 201 - connecting cylinder, 202 - center column, 203 - peripheral part, 204 - transverse strip part, 205 - threaded part, 206 - flange part, 207 - counterweight, 208 - link assembly, 209 - link, 210 - framework, 211 - mounting groove, 212 - connecting ring, 213 - annular groove, 214 - longitudinal groove, 215 - inner end of the link, 216 - outer end of the link, 217 - inner end of the framework, 218 - outer end of the framework, 219 - main cavity, 220 - center passage. DETAILED DESCRIPTION

[0031] Embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application. ​

[0032] In the description of the present application, it needs to be understood that the orientation description, such as the orientation or position relationship indicated by up, down and the like, is based on the orientation or position relationship shown in the drawings, only for the purpose of facilitating the description of the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0033] In the description of the present application, plural means more than two. If there is a description of first, second, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the sequence of technical features indicated.

[0034] In the description of the present application, unless otherwise explicitly limited, the words such as arrangement, installation, connection and the like should be broadly understood, and the person skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical solution.

[0035] Figures 1 to 4 A drain device 100 of a first embodiment of the present application is shown, which includes a housing assembly 108, a valve piece 111 and a magnetic attraction assembly 113. The drain device 100 of the first embodiment can be installed on the floor in a room and used as a floor drain.

[0036] As shown in Figure 2 , the housing assembly 108 includes a body 101, a grate 102 and a filter screen 104. The body 101 is hollow, and the chamber inside the body 101 is a flow passage 106 which can allow fluid to pass through. In this embodiment, the flow passage 106 is mainly used to allow water that needs to be drained from the room to the drain pipe to pass through. As shown in Figure 2 , the inlet 107 is the top end of the flow passage 106, and as shown in Figure 3 , the outlet 112 is the bottom end of the flow passage 106. Please refer to Figure 2 and Figure 3 , the grate 102 is connected to the top end of the body 101, and the grate 102 is installed at the inlet 107. As shown in Figure 3 , the filter screen 104 is located below the grate 102 and in the flow passage 106, and the top end of the valve piece 111 is connected to the filter screen 104. As shown in Figure 2As shown, the grate 102 has a plurality of first through holes 103, and the filter screen 104 has a plurality of second through holes 105, both of which allow water to pass through. The bottom end of the body 101 can be connected to a drain pipe (not shown), and the top end of the body 101 can be exposed at the floor of the indoor space, so that water in the indoor space can flow into the drain pipe through the drain device 100. The grate 102 and the filter screen 104 can block sundries mixed in the water, and the drain device 100 provided with the grate 102 and the filter screen 104 can filter the water twice to prevent larger sundries from entering the drain pipe and causing the drain pipe to be blocked.

[0037] It should be noted that, in order to achieve the function of allowing the fluid to flow in one direction, the housing assembly 108 can also not need the grate 102 and the filter screen 104. Accordingly, the shape of the body 101 can be adaptively adjusted to provide a position to which the top end of the valve piece 111 can be connected. In addition, in other embodiments, one of the grate 102 and the filter screen 104 can also be omitted from the housing assembly 108.

[0038] The valve piece 111 has elasticity, and can be made of rubber, a thin film having elasticity, or other materials having elasticity. The valve piece 111 has a closed state and an open state. Figure 3 In the closed state, the bottom end edge of the valve piece 111 abuts against the inner wall surface of the flow passage 106, thereby separating the inlet 107 and the outlet 112. In the present application, "separating the inlet 107 and the outlet 112" means that the fluid cannot flow from the inlet 107 to the outlet 112, and the fluid cannot flow from the outlet 112 to the inlet 107. Figure 3 As shown, the drain device 100 is in a state in which drainage is not performed or in a state after the drainage is completed, and no water enters the drain device 100 from the grate 102. Since the inlet 107 and the outlet 112 are separated by the valve piece 111 at this time, sewage and odor in the drain pipe connected to the bottom end of the drain device 100 cannot pass through the valve piece 111 from bottom to top, and the sewage and odor in the drain pipe cannot flow back to the indoor space.

[0039] Figure 4 In the open state, the bottom end edge of the valve piece 111 has a gap with the inner wall surface of the flow passage 106, and the inlet 107 and the outlet 112 are in communication with each other. In the present application, "the inlet 107 and the outlet 112 are in communication with each other" means that the fluid can flow from the inlet 107 to the outlet 112. The drain device 100 in the process of performing drainage is as shown in Figure 4 Figure 4 The dashed line with an arrow indicates the flow path of water. Please refer to Figure 3 and Figure 4 ​Water enters the drainage device 100 from the grate 102. After the water comes into contact with the valve plate 111, the weight and pressure of the water deform the valve plate 111, thereby causing the valve plate 111 to... Figure 3 The closed state shown is switched to as follows Figure 4 The indicated on state. (As shown) Figure 4 As shown, after the valve plate 111 deforms, water can pass through the gap between the valve plate 111 and the wall of the flow channel 106 and flow out from the outlet 112. In this way, indoor water can be discharged into the drain pipe. After drainage is completed, the force exerted by the water on the valve plate 111 disappears, and the valve plate 111 returns to its original position under its own elasticity. Figure 3 The valve plate 111 remains in the closed state due to its own elasticity. In this way, the drainage device 100 can automatically open when drainage is needed and automatically close after drainage to prevent backflow of fluid.

[0040] Figure 2 The magnetic component 113 is not specifically shown in the image; its location can be found by referring to... Figure 3 and Figure 4 . Figure 3 There are two magnetic suction components 113. In some other embodiments, there may be only one magnetic suction component 113, or the number of magnetic suction components 113 may be greater than two. When there are multiple magnetic suction components 113, the multiple magnetic suction components 113 may be arranged at intervals around the central axis 116 of the flow channel 106 (i.e., distributed at intervals along the circumferential direction of the flow channel 106).

[0041] like Figure 3 As shown, the magnetic attraction assembly 113 includes a first connecting block 115 and a second connecting block 114. The first connecting block 115 is connected to the valve plate 111, and the second connecting block 114 is connected to the housing assembly 108. At least one of the first connecting block 115 and the second connecting block 114 is magnetic. For example, both the first connecting block 115 and the second connecting block 114 are magnets; or, one of the first connecting block 115 and the second connecting block 114 is a magnet, and the other is made of iron or other ferromagnetic material. The magnetic force applied by the second connecting block 114 to the first connecting block 115 is used to keep the valve plate 111 in a closed state. Figure 3 In the middle, the second connecting block 114, which belongs to the same magnetic attraction component 113, is located outside the first connecting block 115. The second connecting block 114 and the first connecting block 115 attract each other. The magnetic force applied by the second connecting block 114 to the first connecting block 115 is used to bring the first connecting block 115 and the second connecting block 114 closer to each other, thereby switching the valve plate 111 from the open position to the closed position and keeping the valve plate 111 in the closed position.

[0042] It should be noted that, as Figure 3As shown, in this invention, "the second connecting block 114 is located outside the first connecting block 115" means that the distance between the second connecting block 114 and the central axis 116 is greater than the distance between the first connecting block 115 and the central axis 116. Similarly, as will be mentioned below, "the first connecting block 115 is located outside the second connecting block 114" means that the distance between the first connecting block 115 and the central axis 116 is greater than the distance between the second connecting block 114 and the central axis 116.

[0043] Existing floor drains typically rely solely on the elasticity of the valve plate to maintain a seal. However, the drainage device 100 of the first embodiment of this invention achieves a seal through the combined elasticity of the valve plate 111 and the magnetic force provided by the magnetic suction component 113. Compared to existing technologies, the drainage device 100 of the first embodiment of this invention offers better sealing and backflow prevention. Furthermore, both the elasticity of the valve plate 111 and the magnetic force provided by the magnetic suction component 113 enable the valve plate 111 to switch from an open to a closed state. Compared to existing technologies, the valve plate 111 of the drainage device 100 of the first embodiment returns to the closed state more quickly, which helps reduce the time during which fluid may flow back and improves the backflow prevention effect of the drainage device 100.

[0044] The valve plate 111 in the first embodiment will now be described. Figure 2 As shown, the valve plate 111 includes a cone portion 110 and a connecting portion 109. The connecting portion 109 is columnar and is connected to the top end of the cone portion 110. Figure 3 As shown, the cone 110 is disposed in the flow channel 106, and the connecting portion 109 is engaged with the filter screen 104. As mentioned above, the filter screen 104 is part of the housing assembly 108; correspondingly, the cone 110 is indirectly connected to the housing assembly 108 via the connecting portion 109. Figure 3 As shown, when the valve plate 111 is in the closed state, the bottom end of the cone 110 is used to abut against the inner wall surface of the flow channel 106 to separate the inlet 107 and the outlet 112. Figure 4 As shown, the cone 110 includes an outer conical surface 119, and a cavity 117 is provided on the inner side of the cone 110. The cavity wall 118 of the cavity 117 is also set as a conical surface. From the outlet 112 to the inlet 107, the outer conical surface 119 and the cavity wall 118 gradually converge toward the central axis 116 of the flow channel 106; more intuitively, as Figure 4 As shown, in the upward direction, both the outer conical surface 119 and the cavity wall 118 gradually converge towards the central axis 116 of the flow channel 106. The outer conical surface 119 and the cavity wall 118 are arranged back-to-back with each other. The conical surface is used to contact the fluid (e.g., water) entering the flow channel 106 from the inlet 107. The cavity wall 118 can contact and block the fluid (odor, sewage, etc.) entering the flow channel 106 from the outlet 112, thereby playing a role in preventing backflow.

[0045] like Figure 4 As shown, based on the shape of the outer conical surface 119, during drainage, the force exerted by water on the outer conical surface 119 has a component that causes the cone 110 to converge towards the central axis 116 of the flow channel 106. This force causes the bottom end of the cone 110 to separate from the inner wall of the flow channel 106, thereby switching the valve plate 111 to the open state. Furthermore, based on the shape of the outer conical surface 119, during the flow of water from the inlet 107 to the outlet 112, the resistance experienced by the water from the valve plate 111 is relatively small, resulting in better drainage performance of the drainage device 100. Similarly, as... Figure 3 As shown, based on the shape of the cavity wall 118, during the non-drainage process, if the odor and sewage entering the flow channel 106 from the outlet 112 come into contact with the cavity wall 118, the force exerted by the odor and sewage on the cavity wall 118 will cause the cone 110 to open. The bottom end of the cone 110 will still be pressed against the inner wall surface of the flow channel 106, thereby preventing the odor and sewage from flowing back.

[0046] like Figure 3 As shown, the first connecting block 115 is embedded inside the valve plate 111, and the second connecting block 114 is embedded inside the filter screen 104. Since the first connecting block 115 and the second connecting block 114 are not exposed, they do not directly contact the fluid flowing through the drainage device 100. The magnetic force of the magnetic suction assembly 113 is not easily affected, and the first connecting block 115 and the second connecting block 114 are less likely to fall off and enter the drainage pipe. The service life of the first connecting block 115 and the second connecting block 114 is also longer.

[0047] Based on the housing assembly 108 and valve plate 111 shown in the first embodiment, the positions of the first connecting block 115 and the second connecting block 114 are not limited to those of the housing assembly 108 and valve plate 111 shown in the first embodiment. Figure 3 As shown. For example, in another embodiment, the second connecting block 114 can be changed to be connected to the body 101, while the second connecting block 114 is still located outside the first connecting block and is connected to the body 101.

[0048] Furthermore, in some other embodiments, the second connecting block 114 may be disposed inside the first connecting block 115, with the second connecting block 114 located within the cavity 117 (the first connecting block 115 can still remain within the cavity 117). Figure 3 (as shown in the image), and the second connecting block 114 and the first connecting block 115 are configured to repel each other. Accordingly, the shape of the housing assembly 108 needs to be adaptively adjusted, and the housing assembly 108 needs to have a portion extending into the cavity 117 of the cone 110, this portion of the housing assembly 108 being similar to the central column 202 in the second embodiment described below.

[0049] It should be noted that when the second connecting block 114 and the first connecting block 115 are set to repel each other, both the first connecting block 115 and the second connecting block 114 are magnetic (both are magnets), and the N pole of the first connecting block 115 and the N pole of the second connecting block 114 are set to face each other, or the S pole of the first connecting block 115 and the S pole of the second connecting block 114 are set to face each other.

[0050] The drainage device 100 of the second embodiment of the present invention will now be described. Figures 5 to 11 A drainage device 100 according to a second embodiment of the present invention is shown. The drainage device 100 of the second embodiment can also be used as a floor drain. The main difference between the drainage device 100 of the second embodiment and the first embodiment is that the second embodiment also utilizes the gravity of the counterweight 207 to improve the sealing effect of the valve plate 111. Figure 6 As shown, the drainage device 100 includes a housing assembly 108, a valve plate 111, a counterweight 207, a connecting rod assembly 208, and a magnetic suction assembly 113.

[0051] like Figure 6 As shown, in the second embodiment, in addition to the body 101, the grate 102, and the filter screen 104, the housing assembly 108 also includes a connecting cylinder 201 and a central column 202. Please refer to... Figure 6 and Figure 8 The main body 101 has a main chamber 219 extending through both ends, and the connecting cylinder 201 has a central channel 220 extending through both ends. The connecting cylinder 201 is connected to the bottom end of the main body 101. The main chamber 219 and the central channel 220 are interconnected to form the flow channel 106 of the shell assembly 108. The top end of the main chamber 219 serves as the inlet 107 of the flow channel 106, which is located at the top end of the main body 101. The bottom end of the central channel 220 serves as the outlet 112 of the flow channel 106. Furthermore, the bottom end of the outer cylinder can be connected to a drainage pipe. Figure 6 As shown, the grate 102 has multiple first through holes 103 and is installed at the inlet 107; the filter screen 104 has multiple second through holes 105 and is located below the grate 102 and above the valve plate 111. The functions of the grate 102 and the filter screen 104 can be referred to the relevant content of the first embodiment, and will not be repeated here.

[0052] The valve plate 111 of the second embodiment is also elastic and also has an open state and a closed state. The shape of the valve plate 111 of the second embodiment is as follows: Figure 7 As shown, the valve plate 111 includes a tapered portion 110 and a flanged portion 206. The shape of the tapered portion 110 can be referred to the description in the first embodiment, and will not be repeated here. The flanged portion 206 is annular and is connected to the bottom end of the tapered portion 110. Figure 8 and Figure 9Different states of the drainage device 100 are shown respectively. For example... Figure 8 As shown, valve plate 111 is in a closed state, with the flanged portion 206 tightly attached to the bottom surface of the outer cylinder. Valve plate 111 separates the inlet 107 and outlet 112 of the flow channel 106, preventing odors and sewage from the drainage pipe from flowing back into the room. Figure 9 As shown, the valve plate 111 is in the open state, the flange 206 is spaced apart from the bottom surface of the outer cylinder, and the cone 110 is also spaced apart from the inner circumferential surface of the outer cylinder. At this time, the inlet 107 and outlet 112 of the flow channel 106 are connected to each other. Figure 9 The dashed line with arrows in the diagram represents the water flow path. After the water enters the flow channel 106 from the inlet 107, the force exerted by the water on the valve plate 111 causes the cone 110 to contract, thereby causing the valve plate 111 to... Figure 8 The closed state shown is switched to as follows Figure 9 The second embodiment shows the open state. Similar to the first embodiment, the valve plate 111 in the second embodiment remains in the closed state under its own elasticity, and the elasticity of the valve plate 111 can drive the valve plate 111 to switch from the open state to the closed state.

[0053] like Figure 10 As shown, the magnetic attraction assembly 113 includes a first connecting block 115 and a second connecting block 114. The first connecting block 115 is connected to the valve plate 111, and the second connecting block 114 is connected to the counterweight 207. At least one of the first connecting block 115 and the second connecting block 114 is magnetic. The magnetic force applied by the second connecting block 114 to the first connecting block 115 is used to keep the valve plate 111 in a closed state and to switch the valve plate 111 from an open state to a closed state. In the second embodiment, the second connecting block 114 is disposed on the inner side of the cone portion 110, and the first connecting block 115 is disposed on the outer side of the second connecting block 114. The second connecting block 114 and the first connecting block 115 are configured to repel each other.

[0054] like Figure 8 As shown, the counterweight 207 is sleeved on the outside of the central column 202, and the counterweight 207 can slide up and down along the central column 202. Correspondingly, the counterweight 207 can rise and fall relative to the connecting cylinder 201. The central column 202 and the connecting cylinder 201 are fixed to each other. Specifically, as... Figure 6 As shown, the connecting cylinder 201 includes an outer periphery 203, a crossbar portion 204, and a threaded portion 205. The outer periphery 203 is cylindrical. The crossbar portion 204 is connected to the outer periphery 203 and is also connected to the threaded portion 205. The threaded portion 205 is threadedly connected to the central column 202. The top end of the valve plate 111 is engaged with the central column 202.

[0055] like Figure 8 and Figure 9As shown, as the valve plate 111 opens and closes, the counterweight 207 slides up and down along the central column 202. When the force of water applied to the valve plate 111 causes the cone 110 to close, the counterweight 207 slides upward when the valve plate 111 switches from the closed state to the open state. After the drainage is completed, the counterweight 207 slides downward under its own weight. The weight of the counterweight 207 causes the connecting rod assembly 208 to open the valve plate 111. When the valve plate 111 switches from the open state to the closed state, the weight of the counterweight 207 keeps the valve plate 111 in the closed state.

[0056] The drainage device 100 of the second embodiment maintains the valve plate 111 in a closed state through the combined force of the counterweight 207, the magnetic force of the magnetic component 113, and the elasticity of the valve plate 111 itself. Compared with the prior art, the valve plate 111 has a better sealing effect and the drainage device 100 has a better anti-backflow effect.

[0057] like Figure 8 As shown, valve plate 111 surrounds counterweight 207. Link assembly 208 includes link 209 and frame 210. Link 209 is connected to counterweight 207, and frame 210 is connected to valve plate 111. The end of link 209 near the central axis 116 of flow channel 106 is the inner end 215, and the end away from the central axis 116 of flow channel 106 is the outer end 216. The inner end 215 is rotatably connected to counterweight 207, and the outer end 216 is rotatably connected to frame 210. Link 209 is inclined relative to the vertical direction, with the inner end 215 higher than the outer end 216. Figure 11 As shown, multiple connecting rods 209 and multiple frames 210 are provided. Multiple connecting rods 209 are distributed at intervals along the circumference of the counterweight 207, and multiple frames 210 are distributed at intervals along the circumference of the counterweight 207.

[0058] Please combine Figure 8 and Figure 9 Because the connecting rod 209 and the frame 210 are inclined, when the drainage device 100 drains water, the fluid entering the flow channel 106 from the inlet 107 comes into contact with the valve plate 111, causing the force exerted by the connecting rod 209 on the counterweight 207 to have an upward vertical component. This component can drive the counterweight 207 to move upward. Therefore, during the process of the valve plate 111 switching to the open state, the counterweight 207 will slide upward. After the drainage is completed, the force exerted by the water on the outer conical surface 119 of the cone 110 of the valve plate 111 disappears, and the counterweight 207 slides downward under its own weight. Correspondingly, at this time, the force exerted by the connecting rod 209 on the frame 210 has a horizontal component. This component can cause the valve plate 111 to expand outward, thereby returning to the closed state and keeping the valve plate 111 in the closed state.

[0059] The frame 210 can also be inclined so that its shape matches that of the valve plate 111. If the end of the frame 210 closest to the central axis 116 is called the inner end 217, and the end of the frame 210 furthest from the central axis 116 is called the outer end 218, then the inner end 217 is higher than the outer end 218, and also higher than the inner end 215 of the connecting rod. The outer end 216 of the connecting rod is located between the inner end 217 and the outer end 218. Figure 7 As shown, the inner side of the valve plate 111 is also provided with a plurality of mounting grooves 211. Part of the mounting grooves 211 is provided in the cone portion 110, and another part is provided in the flange portion 206. The frame 210 can be installed in the mounting grooves 211. The mounting grooves 211 help to improve the ease of assembly between the frame 210 and the valve plate 111.

[0060] The rotational connection between connecting rod 209 and counterweight 207 can be referred to Figure 11 and Figure 12 .like Figure 11 and Figure 12 As shown, the counterweight 207 includes an annular groove 213, and the drainage device 100 also includes a connecting ring 212. The connecting ring 212 is disposed in the annular groove 213 and can pass through all the connecting rods 209, and the connecting rods 209 can rotate relative to the connecting ring 212. The counterweight 207 also includes multiple longitudinal grooves 214, which are distributed circumferentially around the counterweight 207. The longitudinal grooves 214 and the annular groove 213 are intersected and interconnected. The longitudinal grooves 214 are vertically continuous, and the inner end 215 of the connecting rod can slide up and down in the longitudinal groove 214 so that the inner end 215 of the connecting rod can move to a position suitable for connection with the connecting ring 212. Achieving a rotational connection between the connecting rods 209 and the counterweight 207 through a connecting ring 212 helps to reduce the total number of parts in the drainage device 100 and improves the ease of assembly of the drainage device 100.

[0061] like Figure 10 As shown, the first connecting block 115 is embedded inside the valve plate 111, and the second connecting block 114 is embedded inside the counterweight 207. Since the first connecting block 115 and the second connecting block 114 are not exposed, they do not directly contact the fluid flowing through the drainage device 100. The magnetic force of the magnetic suction assembly 113 is not easily affected, and the first connecting block 115 and the second connecting block 114 are less likely to fall off and enter the drainage pipe. The service life of the first connecting block 115 and the second connecting block 114 is also longer.

[0062] As described above, the housing assembly 108 of the drainage device 100 in the second embodiment includes a body 101, a grate 102, a filter screen 104, a connecting cylinder 201, and a central column 202. However, in some other embodiments, the housing assembly 108 may only include the connecting cylinder 201 and the central column 202. When the housing assembly 108 only includes the connecting cylinder 201 and the central column 202, the central channel 220 of the connecting cylinder 201 is the flow channel 106 of the housing assembly 108.

[0063] In addition, such as Figure 10 As shown, in the second embodiment, the second connecting block 114 is connected to the counterweight block 207; however, in some other embodiments, the second connecting block 114 may also be connected to the connecting cylinder 201. The second connecting block 114 is disposed outside the first connecting block 115. For example, the second connecting block 114 is embedded in the outer periphery 203 of the connecting cylinder 201.

[0064] It should be noted that the drainage device 100 in the first and second embodiments described above is installed on the ground and used as a floor drain. However, the use of the drainage device 100 of the present invention is not limited to a floor drain. For example, in some other embodiments, the drainage device 100 can be installed in a pipe and used as a valve in the pipe. When the drainage device 100 is installed in a pipe, the drainage device 100 can be arranged vertically, horizontally, or inclined relative to the vertical direction. The arrangement direction of the drainage device 100 is based on the direction of the central axis 116 of the flow channel 106. For example, if the drainage device 100 is arranged horizontally, it means that the central axis 116 of the flow channel 106 is horizontal; if the drainage device 100 is arranged vertically, it means that the central axis 116 of the flow channel 106 is vertical.

[0065] 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. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A drainage device, characterised in that, The application relates to a valve, comprising: a housing assembly provided with a flow channel, two ends of the flow channel being an inlet and an outlet respectively; the housing assembly comprises a connecting cylinder and a counterweight, the connecting cylinder is provided with a center channel penetrating through two ends of the connecting cylinder, the center channel is at least a part of the flow channel, at least a part of a valve plate is located in the center channel, the counterweight can be lifted relative to the connecting cylinder; the valve plate is provided with elasticity, the valve plate is connected with the housing assembly, the valve plate has an open state and a closed state, when the valve plate is in the closed state, the valve plate separates the inlet and the outlet; when the valve plate is in the open state, the inlet and the outlet are communicated with each other; fluid entering the flow channel from the inlet can switch the valve plate from the closed state to the open state, and the valve plate surrounds the counterweight; a connecting rod assembly, the connecting rod assembly comprises a plurality of connecting rods and a plurality of skeletons, the plurality of connecting rods are distributed along the circumference of the counterweight, one end of the connecting rod close to the central axis of the flow channel is a connecting rod inner end, one end of the connecting rod away from the central axis is a connecting rod outer end, the connecting rod inner end is rotationally connected with the counterweight, and the connecting rod inner end is higher than the connecting rod outer end; the plurality of skeletons are distributed along the circumference of the counterweight, each connecting rod is connected with a skeleton, the valve plate is connected with the skeleton, and the connecting rod outer end is rotationally connected with the skeleton; a magnetic attraction assembly, comprising a first connecting block and a second connecting block, the first connecting block and the second connecting block are both provided with magnetism, the first connecting block is connected with the valve plate, the second connecting block is connected with the counterweight, the first connecting block is arranged on the outer side of the second connecting block, the second connecting block and the first connecting block repel each other; the magnetic force applied by the second connecting block to the first connecting block, the elasticity of the valve plate and the gravity of the counterweight are all used to keep the valve plate in the closed state.

2. The water drainage device according to claim 1, characterized in that The valve plate comprises a tapered portion located in the flow channel, one end of the tapered portion is connected with the housing assembly, and the other end of the tapered portion is used for abutting against the wall surface of the flow channel to separate the inlet and the outlet; the tapered portion comprises an outer tapered surface, the inner side of the tapered portion is provided with a cavity, the outer tapered surface is used for being in contact with the fluid entering the flow channel from the inlet, the cavity wall and the outer tapered surface are arranged opposite to each other, and from the outlet to the inlet, the outer tapered surface and the cavity wall are gradually converged to the central axis of the flow channel.

3. The water drainage device of claim 1, wherein, The housing assembly comprises: a body provided with the flow channel, the flow channel is vertically arranged, the top end of the flow channel is the inlet, and the bottom end of the flow channel is the outlet; a grate installed at the inlet, the grate is provided with a plurality of first through holes; a filter screen located below the grate and arranged in the flow channel, the filter screen is provided with a plurality of second through holes, and the top end of the valve plate is connected with the filter screen.

4. The water drainage device of claim 1, wherein The first connecting block is embedded in the inner part of the valve plate, and the second connecting block is embedded in the inner part of the counterweight.

5. The water drainage device of claim 1, wherein, The shell assembly further comprises a center column fixedly connected with the connecting cylinder, the center column being located in the center passage, the connecting cylinder and the center column being vertically arranged; The counterweight is slidably sleeved outside the center column, the top end of the valve piece being connected with the center column, and the bottom end of the valve piece being used for abutting against the connecting cylinder to separate the inlet and the outlet.

6. The water drainage device of claim 5, wherein, The shell assembly further comprises: A body, the connecting cylinder being connected to the bottom end of the body, the connecting cylinder and the body jointly defining the flow channel, the inlet being located at the top end of the body, and the outlet being located at the bottom end of the connecting cylinder; A grating installed at the inlet, the grating being provided with a plurality of first through holes; A filter screen arranged in the flow channel, the filter screen being located below the grating and above the valve piece, the filter screen being provided with a plurality of second through holes.

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