Drain valve for sanitary installations

Abstract

The present application provides a kind of bathroom drain valve, including valve shell and valve core, the valve core includes valve inner core and valve outer core;Through the combination design of valve inner core and valve outer core, the valve core can be stably fixed inside the valve shell during use, and displacement will not occur due to water pressure, ensuring that the water outlet is connected to the water pipe, and solving the problem of difficult connection of the water outlet pipe.During the drainage and closing process, the valve outer core and the valve inner core are rotated by the handle nut and the rotating member, and the precise control of the valve core position is realized.During drainage, the first through hole and the second through hole are aligned, and then the water is discharged through the valve core outlet to the water outlet pipe, and the drainage is smooth.During closing, the valve core is completely pushed into the interior, the internal moisture is squeezed out, the possibility of residual moisture is reduced, the drain valve is effectively prevented from being frozen, and the normal use of the drain valve in cold climates such as Europe and America is ensured.Therefore, the bathroom drain valve is convenient to use, easy to operate, smooth to drain, and has the advantages of anti-freezing, etc.

Description

Technical Field

[0001] This invention relates to the field of swimming pool or bathtub accessories, and more particularly to a drain valve for bathroom use. Background Technology

[0002] In bathroom settings such as bathtubs or swimming pools, traditional drain valves have some design flaws. During drainage, when the valve core's outlet is connected to the water pipe, the water pressure can cause displacement of the valve core, making connection difficult. Furthermore, during use, valve core movement can lead to instability, resulting in poor drainage or inability to completely close the drain, causing inconvenience and user frustration.

[0003] Furthermore, in Europe and America, bathtubs are often installed outdoors. In cold climates, the outdoor drain valve may suffer another problem: the water trapped inside the drain valve may freeze. Frozen water can cause the drain valve to freeze shut, preventing the valve core and other components from operating smoothly, thus affecting its normal use.

[0004] Therefore, it is necessary to provide a new type of bathroom drain valve to solve the problems of inconvenient water pipe connection and valve core shaking of traditional drain valves, and to enable normal use in cold climates and prevent the drain valve from freezing. Summary of the Invention

[0005] The purpose of this invention is to provide a bathroom drain valve that solves the problems of inconvenient water pipe connection and valve core shaking in traditional drain valves. At the same time, this drain valve can be used normally in cold climates, effectively draining water and preventing the drain valve from freezing.

[0006] A bathroom drain valve for draining water from a swimming pool or bathtub includes: a valve housing having a first open end and a second open end communicating with the first open end; an annular protrusion protruding from the middle of the inner side of the valve housing towards the axis of the valve housing along its length, the annular protrusion having at least two grooves; a valve core including an inner valve core and an outer valve core; the inner valve core including a cylindrical inner valve core body and at least one first slide rail disposed on the outer wall of the cylindrical inner valve core body; one end of the cylindrical inner valve core body is closed and has a spherical seal at the end of the closed end, and a first through hole communicating with the interior of the cylindrical inner valve core body is opened on the side of the closed end; the other end of the cylindrical inner valve core body is configured as a water outlet and has an external thread on the side, a nut with a handle being threadedly connected to the external thread; and the first slide rail having a notch recessed towards the axis of the cylindrical inner valve core body on the side near the water outlet. The valve outer core is rotatably sleeved on the outside of the valve inner core. The valve outer core includes a cylindrical valve outer core body and at least one arc-shaped plate-like portion disposed at the end of the cylindrical valve outer core body. The cylindrical valve outer core body is sleeved on one end of the valve inner core, and a portion of it near the arc-shaped plate-like portion of the valve outer core is protruding. The protruding portion forms a rotational fit with the inner wall of the valve housing. The cylindrical valve outer core body is provided with a second through hole opposite to the first through hole. A second slide rail is provided on the outer side of the arc-shaped plate-like portion of the valve outer core. The side of the second slide rail away from the outlet is provided with a notch recessed towards the axis of the cylindrical valve inner core body. A rotating member is provided on the side of the arc-shaped plate-like portion of the valve outer core away from the cylindrical valve outer core body to control the rotation of the valve outer core relative to the valve inner core. The lengths of the first slide rail and the second slide rail are equal to the distance between the end of the receiving portion on the inner side of the valve housing and the annular protrusion.

[0007] Preferably, the annular protrusion has four grooves, which are symmetrically arranged in pairs, with an angle of 70 to 120 degrees between adjacent grooves. More preferably, the annular protrusion has four grooves evenly distributed, with an angle of 90 degrees between adjacent grooves.

[0008] Preferably, a pair of opposing first slide rails are provided on the outer wall of the cylindrical valve inner core body, and two opposing valve outer core arc-shaped plate portions are provided at the end of the cylindrical valve outer core body, with the valve outer core arc-shaped plate portions respectively disposed between the two first slide rails.

[0009] Furthermore, the two outer core arc-shaped plate-like portions of the valves are arranged opposite each other.

[0010] Preferably, the cylindrical valve outer core body protrusion is provided with two first annular grooves, and a first rubber ring is provided on the first annular groove.

[0011] Preferably, the connection between the valve inner core and the cylindrical valve outer core body is provided with two second annular grooves, and a second rubber ring is provided on the second annular groove.

[0012] Preferably, a third rubber ring is provided between the spherical seal and the cylindrical valve core body.

[0013] Preferably, the inner diameter of the first opening end is the same as the diameter of the spherical seal.

[0014] Preferably, a face cover is provided at the second opening end.

[0015] Furthermore, the outer side of the valve housing is provided with external threads and fasteners containing internal threads, and a heat insulation material layer is provided between the fasteners and the face cover.

[0016] Compared with existing technologies, the present invention has the following beneficial effects: The present invention provides a bathroom drain valve, comprising a valve shell and a valve core, wherein the valve core comprises an inner valve core and an outer valve core; through the combined design of the inner and outer valve cores, the valve core can be stably fixed inside the valve shell during use, and will not be displaced due to water pressure, ensuring a stable and reliable connection of the outlet to the water pipe, thus solving the problem of difficulty in connecting the outlet water pipe. During drainage and closing, the drain valve drives the rotation of the outer and inner valve cores through a nut with a handle and a rotating component, achieving precise control of the valve core position. During drainage, the first and second through holes are aligned, and the water is discharged through the outlet of the valve core to the outlet pipe, ensuring smooth drainage; when closed, the valve core is fully pushed inside, squeezing out internal water, reducing the possibility of residual water, effectively preventing the drain valve from freezing, and ensuring normal use of the drain valve in cold climates such as Europe and the United States. Therefore, this bathroom drain valve has the advantages of convenient use, simple operation, smooth drainage, and antifreeze properties. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the installation of the bathroom drain valve according to the present invention; Figure 2 This is a three-dimensional structural diagram of the bathroom drain valve described in this invention; Figure 3 This is a schematic cross-sectional view of the bathroom drain valve described in this invention. Figure 4 This is a three-dimensional structural diagram of the valve core described in this invention. Figure 5 This is a three-dimensional structural diagram of the valve core described in this invention. Figure 6This is a three-dimensional structural diagram of the valve outer core described in this invention. Figure 7 This is a three-dimensional structural diagram of the valve housing described in this invention. Figure 8 This is a top view of the valve housing of the present invention.

[0018] in: 100-Valve housing, 200-Valve core, 110-Cylindrical valve housing body, 120-Connector, 130-Annular protrusion, 140-Groove, 210-Valve inner core, 220-Valve outer core, 211-Cylindrical valve inner core body, 212-First slide rail, 213-Spherical seal, 214-First through hole, 215-Outlet, 217-Handled nut, 218-Notch, 219-Sealing gasket, 21-Cylindrical valve outer core body, 222-Arc-shaped plate-like part of valve outer core, 223-Second through hole, 224-Second slide rail, 225-Rotating component, 226-First annular groove, 227-First rubber ring, 228-Second annular groove, 229-Second rubber ring, 230-Third rubber ring, 231-Face cover, 232-Fastener, 233-Insulation material layer. Detailed Implementation

[0019] The embodiments described below are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention. Example 1

[0020] See Figures 1-8 This embodiment 1 provides a bathroom drain valve for draining water from a swimming pool or bathtub, which includes a valve housing 100 and a valve core 200.

[0021] See Figure 2 , Figure 3 , Figure 7 as well as Figure 8The valve housing 100 includes a first open end and a second open end that is connected through the first open end. An annular protrusion 130 protrudes from the center of the inner side of the valve housing 100 towards the axis of the valve housing 100's length direction. At least two grooves 140 are provided on the annular protrusion 130. Specifically, the valve housing 100 includes a hollow cylindrical valve housing body 110 and a T-shaped connector 120. One end of the hollow cylindrical valve housing body 110 is fitted onto the outside of the T-shaped end of the connector 120. The vertical end of the connector 120 is the first open end, and the end of the cylindrical valve housing body 110 away from the connector 120 is the second open end. The annular protrusion 130 is located on the inner center of the cylindrical valve housing body 110.

[0022] See Figure 4 as well as Figure 5 The valve core 200 includes an inner valve core 210 and an outer valve core 220. The inner valve core 210 includes a cylindrical inner valve core body 211 and at least one first slide rail 212 disposed on the outer wall of the cylindrical inner valve core body 211. One end of the cylindrical inner valve core body 211 is closed and a spherical seal 213 is provided at the end of the end. A first through hole 214 communicating with the interior of the cylindrical inner valve core body 211 is opened on the side of the end. The other end of the cylindrical inner valve core body 211 is configured as an outlet 215 and has an external thread on the side. A nut with a handle 217 is threadedly connected to the external thread. The first slide rail 212 has a notch 218 recessed towards the axis of the cylindrical inner valve core body 211 on the side near the outlet 215. A sealing gasket 219 is also provided in the nut with handle 217 at the contact point with the outlet 215.

[0023] See Figure 4 as well as Figure 6The valve outer core 220 is rotatably sleeved on the outside of the valve inner core 210. The valve outer core 220 includes a cylindrical valve outer core body 221 and at least one arc-shaped plate-like portion 222 disposed at the end of the cylindrical valve outer core body 221. The cylindrical valve outer core body 221 is sleeved on one end of the valve inner core 210, and a portion of it near the arc-shaped plate-like portion 222 protrudes. The outer diameter of the protruding portion is the same as the inner diameter of the valve housing 100. The cylindrical valve outer core body 221 is provided with a second through hole 223 corresponding to the first through hole 214. The arc-shaped plate-like portion 222... A second slide rail 224 is provided on the outer side of 2. The second slide rail 224 is provided with a notch 218 recessed towards the axis of the cylindrical valve inner core body 211 on the side away from the outlet 215. The arc-shaped plate-like part 222 of the valve outer core is provided with a rotating member 225 on the side away from the cylindrical valve outer core body 221, which controls the rotation of the valve outer core 220 relative to the valve inner core 210. The lengths of the first slide rail 212 and the second slide rail 224 are equal to the distance between the end of the receiving part inside the valve housing 100 and the annular protrusion 130, so that the notch 218 can abut against the annular protrusion 130.

[0024] The annular protrusion has four grooves, which are symmetrically arranged in pairs, with an angle of 70-120 degrees between adjacent grooves. Figure 7 as well as Figure 8Specifically, in this embodiment, four grooves 140 are evenly distributed on the annular protrusion 130, and the angle between two adjacent grooves 140 is 90 degrees. Preferably, a pair of opposing first slide rails 212 are provided on the outer wall of the cylindrical valve inner core body 211, and two opposing valve outer core arc-shaped sheet portions 222 are provided at the ends of the cylindrical valve outer core body 221, with the valve outer core arc-shaped sheet portions 222 respectively disposed between the two first slide rails 212. Further, the two valve outer core arc-shaped sheet portions 222 are disposed opposite to each other. It should be noted that the four grooves 140 include two sets of grooves 140 arranged in pairs opposite each other. One set of opposite grooves 140 is used to fit the first slide rail 212, and the other set of opposite grooves 140 is used to fit the second slide rail 224. The second slide rail 224 is located on the side of the arc-shaped plate. When the arc-shaped plate rotates, one end of the arc-shaped plate abuts against the side of the first slide rail 212. At this time, the angle between the second slide rail 224 and the first slide rail 212 is 90 degrees. That is to say, the line connecting the two second slide rails 224 is perpendicular to the line connecting the two first slide rails 212. In this state, the valve core 200 can extend or retract relative to the valve housing 100. When the side of the arc-shaped plate does not abut against the side of the first slide rail 212, it means that the notch 218 of the first slide rail 212 or the second slide rail 224 abuts against the annular protrusion 130. At this time, the valve core 200 will not move relative to the valve housing 100. It should also be noted that in this embodiment, the number of the first through hole 214 and the second through hole 223 are both 2 and they are arranged opposite to each other. When the second slide rail 224 contacts the first slide rail 212, the first through hole 214 arranged opposite to each other on the valve inner core 210 and the second through hole 223 arranged opposite to each other on the valve outer core 220 are completely aligned, and the drainage effect is optimal at this time.

[0025] Combination Figure 4 , Figure 6 Preferably, the cylindrical valve outer core body 221 has two first annular grooves 226 on its protruding portion, and a first rubber ring 227 is provided on the first annular groove 226. The first rubber ring 227 makes the valve shell 100 and the valve core 200 relatively tight, preventing water from flowing into the gap between the valve core 200 and the inner side of the valve shell 100, thus avoiding excessive water accumulation and freezing of the drain valve in cold regions. It should be noted that the front part of the cylindrical valve outer core body 221 is designed with an outer diameter smaller than the gap between the valve shell 100, so that water can reach the first through hole 214 and the second through hole 223 from the gap between the cylindrical valve outer core body 221 and the valve shell 100 and then flow out.

[0026] See Figure 5Preferably, the connection between the valve inner core 210 and the cylindrical valve outer core body 221 is provided with two second annular grooves 228, and a second rubber ring 229 is provided on the second annular grooves 228. This ensures that water will only flow out from the first through hole 214 and the second through hole 223 through the valve inner core 210, and will not flow through the gap between the cylindrical valve outer core body 221 and the valve inner core 210, thereby reducing internal water accumulation and preventing the drain valve from freezing in cold regions.

[0027] See Figure 5 Preferably, a third rubber ring 230 is provided between the spherical seal 213 and the cylindrical valve inner core body 211. When the drain valve is not discharging water, the spherical seal 213 abuts against the first open end of the connector 120, thereby achieving a seal and preventing water from the bathtub from entering the valve housing 100, thus avoiding the drain valve freezing in cold regions where there is a lot of water inside. Preferably, the inner diameter of the first open end is the same as the diameter of the spherical seal 213, allowing for a better seal at the first open end.

[0028] See Figure 1 Preferably, a cover 231 is provided at the second opening end. Further, the outer side of the valve housing 100 is provided with external threads and a fastener 232 containing internal threads, and a thermal insulation material layer 233 is provided between the fastener 232 and the cover. During installation, the cover abuts against the bathtub wall, and the thermal insulation material layer 233 is provided on the outer side of the valve housing 100 inside the bathtub wall, thereby achieving thermal insulation of the inside of the valve housing 100 to prevent it from freezing. Then, the drain valve can be installed by tightening the fastener 232.

[0029] It should be noted that when the drain valve is not draining, the notch 218 of the first slide rail 212 abuts against the annular protrusion 130 of the valve housing 100. At this time, the spherical seal 213 tightly seals the connector 120. Although the water in the bathtub will exert water pressure on the valve core 200, the valve core 200 will not be pushed out as a whole because the notch 218 abuts against the annular protrusion 130 of the valve housing 100, and the installation is stable. When the drain valve drains water, the nut 217 with a handle drives the inner valve core 210 to rotate relative to the outer valve core 220. At this time, the second slide rail 224 included in the outer valve core 220 is located at the groove 140 provided on the annular protrusion 130, so the outer valve core 220 will not rotate, only the inner valve core 210 will rotate, aligning the first slide rail 212 included in the inner valve core 210 with the corresponding groove 140. After alignment, the water pressure will squeeze the valve core 200, and both the second slide rail 224 and the first slide rail 212 will slide along the groove 140, thus squeezing out the valve core 200. When squeezed to the outermost side, the first slide rail 212 is located in the groove 140, so the inner valve core 210 will not rotate. At this time, the rotating part 214 included in the outer valve core 220 will rotate. 25 drives the valve outer core 220 to rotate a certain angle, thereby causing the notch 218 included in the second slide rail 224 to abut against the annular protrusion 130. At this time, even if a force is applied to the valve core 200 towards the first opening end, the valve core 200 will not be squeezed into the interior because the notch 218 included in the second slide rail 224 abuts against the annular protrusion 130. At this time, the water outlet pipe can be connected at the water outlet 215 included in the valve inner core 210. Then, the rotating part 225 included in the valve outer core 220 drives the valve outer core 220 to rotate a certain angle again, so that the first through hole 214 is aligned with the second through hole 223. Water can then enter through the first through hole 214 and the second through hole 223, and then reach the water outlet pipe through the valve inner core 210 for discharge. When drainage is complete, remove the outlet pipe. Simultaneously, rotate the rotating component 225 in the opposite direction to align the second slide rail 224 with the groove 140. Then, apply force to the first opening end to push the valve core 200 into the valve housing 100. Next, the valve inner core 210 is rotated relative to the valve outer core 220 by a certain angle through the nut 217 with a handle, thus locking the valve core 200. It should be noted that the outer side of the rotating component 225 is provided with anti-slip teeth for easy rotation, and the connection between the rotating component 225 and the arc-shaped plate is a snap-fit ​​fixed connection.

[0030] This invention provides a bathroom drain valve, comprising a valve housing 100 and a valve core 200. The valve core 200 includes an inner valve core 210 and an outer valve core 220. Through the combined design of the inner valve core 210 and the outer valve core 220, the valve core 200 can be stably fixed inside the valve housing 100 during use, preventing displacement due to water pressure. This ensures a stable and reliable connection of the outlet 215 to the water pipe, solving the problem of difficulty in connecting the water outlet pipe. During drainage and closing, the drain valve uses a nut with a handle 217 and a rotating component 225 to drive the rotation of the outer valve core 220 and the inner valve core 210, achieving precise control of the valve core 200's position. During drainage, the first through hole 214 and the second through hole 223 are aligned, and the water is discharged through the outlet 215 of the valve core 200 to the outlet pipe, ensuring smooth drainage. When closed, the valve core 200 is fully pushed inside, squeezing out internal water and reducing the possibility of residual water, effectively preventing the drain valve from freezing and ensuring normal operation of the drain valve in cold climates such as Europe and the United States. Therefore, this bathroom drain valve has the advantages of being convenient to use, easy to operate, ensuring smooth drainage, and being freeze-proof.

[0031] Example 2: This embodiment 2 is largely the same as embodiment 1, except that the annular protrusion has two grooves with an arc of 90 degrees between them. Correspondingly, there is one first slide rail. The cylindrical valve core body has an arc-shaped plate at its end, with an arc of 90 degrees. When the side of the arc-shaped plate abuts against the side of the first slide rail, the arc of the cross section between the second slide rail and the first slide rail is 90 degrees. At this time, the second slide rail and the first slide rail are aligned with the corresponding grooves, and the valve core can extend or retract relative to the valve shell. When the side of the arc-shaped plate does not abut against the side of the first slide rail, it means that the notch of the first or second slide rail is abutting against the annular protrusion, and the valve core will not move relative to the valve shell.

[0032] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention and do not limit the invention to the specific implementations described. Obviously, modifications and variations can be made based on the content of this specification. The embodiments selected and specifically described in this specification are intended to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. They are not intended to limit the invention, and any simple modifications to the invention fall within the scope of protection of this invention.

Claims

1. A drain valve for swimming pools or bathrooms, used for draining water from swimming pools or bathtubs, characterized in that: It includes: A valve housing includes a first open end and a second open end that is connected through the first open end. An annular protrusion is provided on the inner middle part of the valve housing towards the axis of the valve housing in the length direction. At least two grooves are provided on the annular protrusion. A valve core, comprising an inner valve core and an outer valve core, the inner valve core comprising a cylindrical inner valve core body and at least one first slide rail disposed on the outer side wall of the cylindrical inner valve core body, one end of the cylindrical inner valve core body being closed and having a spherical seal at the end of the end, and a first through hole communicating with the interior of the cylindrical inner valve core body being opened on the side of the end, the other end of the cylindrical inner valve core body being configured as a water outlet and having an external thread on the side, a nut with a handle being threadedly connected to the external thread, and a notch recessed toward the axis of the cylindrical inner valve core body being provided on the side of the first slide rail near the water outlet; The valve outer core is rotatably sleeved on the outside of the valve inner core. The valve outer core includes a cylindrical valve outer core body and at least one arc-shaped plate-like portion disposed at the end of the cylindrical valve outer core body. The cylindrical valve outer core body is sleeved on one end of the valve inner core, and a portion of it near the arc-shaped plate-like portion of the valve outer core is protruding. The protruding portion forms a rotational fit with the inner wall of the valve housing. The cylindrical valve outer core body is provided with a second through hole opposite to the first through hole. A second slide rail is provided on the outer side of the arc-shaped plate-like portion of the valve outer core. The side of the second slide rail away from the outlet is provided with a notch recessed towards the axis of the cylindrical valve inner core body. A rotating member is provided on the side of the arc-shaped plate-like portion of the valve outer core away from the cylindrical valve outer core body to control the rotation of the valve outer core relative to the valve inner core. The lengths of the first slide rail and the second slide rail are equal to the distance between the end of the receiving portion on the inner side of the valve housing and the annular protrusion.

2. The drain valve for swimming pools or bathrooms as described in claim 1, characterized in that, The annular protrusion has four grooves, which are arranged symmetrically in pairs, with an angle of 70 to 120 degrees between adjacent grooves.

3. The drain valve for swimming pools or bathrooms as described in claim 2, characterized in that, A pair of opposing first slide rails are provided on the outer wall of the cylindrical valve inner core body, and two opposing valve outer core arc-shaped plate portions are provided at the end of the cylindrical valve outer core body, with the valve outer core arc-shaped plate portions respectively disposed between the two first slide rails.

4. The drain valve for swimming pools or bathrooms as described in claim 3, characterized in that, The two valve outer core arc-shaped plate-like portions are arranged opposite each other.

5. The drain valve for swimming pools or bathrooms as described in claim 1, characterized in that, The cylindrical valve outer core body protrusion is provided with two first annular grooves, and a first rubber ring is provided on the first annular groove.

6. The drain valve for swimming pools or bathrooms as described in claim 1, characterized in that, The connection between the inner valve core and the outer cylindrical valve core is provided with two second annular grooves, and a second rubber ring is provided on the second annular groove.

7. The drain valve for swimming pools or bathrooms as described in claim 1, characterized in that, A third rubber ring is provided between the spherical seal and the cylindrical valve core body.

8. The drain valve for swimming pools or bathrooms as described in claim 1, characterized in that, The inner diameter of the first opening end is the same as the diameter of the spherical seal.

9. The drain valve for swimming pools or bathrooms as described in claim 1, characterized in that, A cover is provided at the second opening end.

10. The drain valve for swimming pools or bathrooms as described in claim 9, characterized in that, The outer side of the valve housing is provided with external threads and fasteners containing internal threads, and a heat insulation material layer is provided between the fasteners and the face cover.

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