A control device for a drain valve

Abstract

The present invention provides a control device for a drain valve, which relates to the field of bathroom technology. Among them, this control device is used to control the opening and closing of the drain valve, and it includes an automatic drain mechanism that is transmission-connected to the drain valve, a pressurizing mechanism that can pressurize the automatic drain mechanism, and a pressure relief mechanism with a buoyancy member, and the buoyancy member can move according to the water level, so that the automatic drain mechanism can increase the pressure and drive the drain valve to open, or release the pressure and drive the drain valve to close. The control device of the present invention can ensure that as long as the water level in the water tank drops to a certain height, the automatic drain mechanism will automatically reset and close the drain valve. Even if the power is cut off during the flushing process, it can automatically reset, and there will be no problem of getting stuck and causing the water to flow all the way.

Description

Technical Field

[0001] The invention relates to the field of sanitary ware, and in particular to a control device for a drain valve. Background Art

[0002] The toilet drain valve is a device used to control the flushing of the toilet. With the improvement of living standards, people have higher and higher requirements for the quality of life, and automatic drain valves have become very popular. At present, automatic drain valves generally use motors as driving force, and do not have the function of automatic reset when the power is off. If the automatic drain valve is powered off during the automatic flushing process, the automatic drain valve will be stuck, causing water to flow to the sewer all the time, causing great waste. Therefore, it is particularly important to ensure that the automatic drain valve can automatically reset after the water level drops. In view of this, the inventors specially proposed this application after studying the existing technology. Summary of the invention

[0003] In order to solve the above technical problems, the present invention provides a control device for a drain valve, which is used to control the opening and closing of the drain valve, and comprises: an automatic drainage mechanism, which is transmission-connected to the drain valve, a pressurizing mechanism, which can pressurize the automatic drainage mechanism; a pressure relief mechanism, which includes a buoyancy member, and the buoyancy member can move according to the water level, so that the automatic drainage mechanism can increase the pressure and drive the drain valve to open, or relieve the pressure and drive the drain valve to close.

[0004] As a further optimization, the drain valve has a valve core mechanism, which includes a plug capable of sealing the water outlet of the water tank; an automatic drainage mechanism, which is provided with a cavity and a first channel connecting the cavity and the outside; the automatic drainage mechanism includes a movable part movably configured in the cavity and transmission-connected to the plug; a pressurizing mechanism, which is connected to the cavity; the buoyancy part is located in the water tank and can block the first channel by buoyancy.

[0005] As a further optimization, the valve core mechanism also includes a transmission assembly, which respectively transmits and connects the plug and the movable part, and the pressurizing mechanism is connected to the pressurizing hole of the cavity and is located above the movable part; the pressurizing mechanism can pressurize the cavity to drive the movable part to move downward, and through the transmission assembly, drive the plug to detach from the water outlet.

[0006] As a further optimization, the valve core mechanism also includes a manual button that is transmission-connected to the transmission assembly, and the manual button can be pressed to drive the plug to detach from the water outlet through the transmission assembly.

[0007] In another embodiment, as a further optimization, the movable part is connected to the plug through a connecting rod, and the pressurizing hole of the pressurizing mechanism connected to the cavity is located below the movable part; the pressurizing mechanism can pressurize the cavity to drive the movable part to move upward and drive the plug to detach from the water outlet. The valve core mechanism also includes a transmission assembly and a manual button, and the transmission assembly is respectively connected to the plug and the manual button; the manual button can be pressed to drive the plug to detach from the water outlet through the transmission assembly.

[0008] As a further optimization, the buoyancy member has a cavity or a hollow groove opening downward to increase buoyancy.

[0009] As a further optimization, the automatic drainage mechanism also includes an elastic member located in the cavity.

[0010] As a further optimization, the automatic drainage mechanism includes a shell provided with the housing cavity and the first channel, the shell is provided with a movable channel in the up and down directions; the buoyancy member is movably configured in the movable channel.

[0011] As a further optimization, the outer wall of the shell is provided with a limiting portion extending outward and having the movable channel, and the limiting portion can cover or be sleeved on the buoyancy member.

[0012] As a further optimization, the automatic drainage mechanism also includes a shell provided with the cavity and the first channel, the buoyancy member is hinged to the shell and provided with an inclined end face; the buoyancy member can be hinged to rotate the inclined end face into a horizontal end face and block the first channel.

[0013] By adopting the above technical solution, the present invention can achieve the following technical effects: the control device of the present invention can automatically reset even if the power is cut off during the flushing process, ensuring that the problem of water flowing straight will not occur. Specifically, the pressure-increasing mechanism can pressurize the automatic drainage mechanism, and when the water level is high, the buoyancy element rises, so that the automatic drainage mechanism can increase the pressure, thereby driving the drainage valve to open; when the water level drops, the buoyancy element falls, so that the automatic drainage mechanism can release the pressure, thereby driving the drainage valve to close.

[0014] By adopting the above technical solution, the control device of the present invention can ensure that as long as the water level in the water tank drops to a certain height, the automatic drainage mechanism will automatically reset and close the drainage valve. Even if the power is cut off during the flushing process, it can automatically reset and will not get stuck and cause the water to flow continuously. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 is a cross-sectional view of an embodiment of the present invention, in which a control device and a drain valve are installed in a toilet tank;

[0017] Figure 2 This is an axonometric diagram of an embodiment of the present invention, in which the automatic drainage mechanism is externally disposed on the valve core mechanism;

[0018] Figure 3 yes Figure 2 Sectional view along the AA axis (the plug blocks the water outlet);

[0019] Figure 4 It is a cross-sectional view of an embodiment of the present invention, when the automatic drainage mechanism drives the plug to separate from the water outlet;

[0020] Figure 5 This is a cross-sectional view of an embodiment of the present invention, when a manual button drives the plug to separate from the water outlet;

[0021] Figure 6 This is an isometric view of an embodiment of the present invention, when the automatic displacement mechanism is built into the valve core mechanism;

[0022] Markings in the figure: 1-automatic drainage mechanism; 11-cavity; 12-first channel; 13-movable member; 14-housing; 15-elastic member; 16-pressurization hole; 17-movable channel; 18-limiting part; 2-pressurization mechanism; 3-pressure relief mechanism; 31-buoyancy member; 32-empty groove; 33-inclined end surface; 4-valve core mechanism; 41-manual button; 42-connecting rod; 43-plug; 5-water outlet; DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the invention claimed for protection, but merely represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0024] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0025] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0026] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0028] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments:

[0029] First embodiment:

[0030] Depend on Figures 1 to 5 As shown, in this embodiment, a control device for a drain valve is used to control the opening and closing of the drain valve, which includes: an automatic drain mechanism, which is transmission-connected to the drain valve, a pressurizing mechanism, which can pressurize the automatic drain mechanism; and a pressure relief mechanism, which includes a buoyancy member, which can move according to the water level, so that the automatic drain mechanism can increase the pressure and drive the drain valve to open, or release the pressure and drive the drain valve to close. Specifically, the pressurizing mechanism pressurizes the automatic drain mechanism, and when the water level is high, the buoyancy member is in a high position, so that the automatic drain mechanism can increase the pressure and drive the drain valve to open; when the water level is low, the buoyancy member is in a low position, so that the automatic drain mechanism releases the pressure, resets the automatic drain mechanism, and drives the drain valve to close.

[0031] Depend on Figures 1 to 5As shown, in this embodiment, the drain valve has a valve core mechanism, which includes a plug capable of sealing the water outlet of the water tank; an automatic drain mechanism, which is provided with a cavity and a first channel connecting the cavity and the outside; the automatic drain mechanism includes a movable member movably arranged in the cavity and connected to the plug by transmission; a pressurizing mechanism, which is connected to the cavity; and a buoyancy member located in the water tank, which can block the first channel by buoyancy. The pressurizing mechanism 2 can pressurize the cavity 11 to drive the movable member 13 to move and drive the plug 43 to detach from the water outlet 5, so that the water tank can be drained, so that the buoyancy member 31 can fall, so that the gas or liquid in the cavity 11 can flow from the cavity 11 to the outside through the first channel 12, so that the movable member 13 can be reset. Specifically, the piston member is sealed against the side wall of the cavity and can perform piston movement in the cavity. The pressurizing mechanism 2 pressurizes the chamber 11 of the automatic drainage mechanism 1, so that the movable member 13 located in the chamber 11 moves and drives the plug 43 to separate from the water outlet 5. At this time, the water in the water tank can flow out from the water outlet 5, so that the water level in the water tank drops. The buoyancy member 31 loses the support of the water and separates from the outlet of the first channel 12. The gas or liquid in the chamber 11 flows out through the first channel 12, so that the movable member 13 automatically resets. Since the height change of the water level is used to make the buoyancy member 31 block or separate from the first channel 12, it is guaranteed that the automatic drainage mechanism 1 will definitely reset after the water level drops. Therefore, it can be ensured that as long as the water level in the water tank drops to a certain height, the automatic drainage mechanism 1 will automatically reset, so that the plug 43 falls and seals the water outlet 5. The height of the water level is used to determine whether the automatic drainage mechanism 1 is reset, which can well ensure that the automatic drainage mechanism 1 will automatically reset after the water level in the water tank drops. Even if the control device is powered off during the flushing process, it will not be stuck and cause the water to flow all the time. In addition, the outlet of the first channel 12 faces downward, which can effectively prevent debris from clogging, ensure the smooth flow of the first channel 12, and thus ensure that the control device will not fail during long-term use. This has great practical significance.

[0032] The control device also includes a sensing mechanism, and a control mechanism electrically connected to the pressurizing mechanism 2 and the sensing mechanism. The sensing mechanism is used to sense the user approaching or moving away from the toilet, and send a sensing signal to the control mechanism; the control mechanism controls the pressurizing mechanism 2 to pressurize and stop pressurizing according to the received signal, so that the automatic drainage mechanism 1 drives the drainage valve to open and close. How the sensing mechanism senses the user approaching and moving away, and how the control mechanism controls the pressurizing mechanism 2 to start or stop pressurizing, are all conventional prior art and will not be described in detail here.

[0033] Depend on Figures 3 to 5As shown, in this embodiment, the valve core mechanism 4 also includes a transmission assembly, which is respectively connected to the plug 43 and the movable part 13 by transmission, and the pressure mechanism 2 is connected to the pressure hole 16 of the chamber 11 and is located above the movable part 13; the pressure mechanism 2 can pressurize the chamber 11 to drive the movable part 13 to move downward, and drive the plug 43 to detach from the water outlet 5 through the transmission assembly. Specifically, the valve core mechanism 4 can be an existing manual flush valve, which includes: a detachable shell configured on the water outlet 5 of the water tank, a flush button configured above the shell, a manual button 41 configured on the toilet tank cover and located above the flush button for pressing the flush button, a plug 43 configured below the shell, and a transmission assembly configured inside the shell and connected to the flush button and the plug 43 by transmission. Pressing the flush button can drive the plug 43 to rise to open the water outlet 5 through the transmission assembly. The specific structure of the transmission assembly is the conventional prior art in this field and will not be repeated here. The plug 43 is a disc-shaped geometric body.

[0034] The pressurizing mechanism 2 includes a press machine, which is an air pump or a hydraulic pump, for injecting gas or liquid into the cavity 11 to increase the pressure in the cavity 11 and push the movable part 13 to move. The automatic drainage mechanism 1 includes a shell 14 provided with a cavity 11 and a first channel 12, and the movable part 13 can separate the cavity 11 into an upper cavity and a lower cavity that are not connected. The upper cavity is connected to the first channel 12 and the press machine, respectively, and the lower cavity is connected to the atmosphere or the inside of the water tank. The automatic drainage mechanism 1 is arranged above the valve core mechanism 4, and the movable part 13 extends from the lower cavity, facing the flush button. The press machine pressurizes the upper cavity, which can drive the movable part 13 to move downward to press the flush button to disengage the plug 43 from the water outlet 5. The shell 14 of the automatic drainage mechanism 1 and the outer shell of the valve core mechanism 4 can be a split and detachable fit, or of course, an integrated structure. That is, a control device of a drain valve of the present invention can be transformed from an existing manual flush valve with an external automatic drain mechanism 1, a pressurizing mechanism 2, and a pressure relief mechanism 3, which greatly reduces the cost of the automatic drain valve of the present invention and makes the control device of the present invention have better practical significance.

[0035] Depend on Figures 3 to 5As shown, in the present embodiment, the automatic drainage mechanism 1 further includes an elastic member 15 located in the cavity 11. Specifically, the elastic member 15 is a compression spring located in the lower cavity, and is used to support the movable member 13 upward to drive the movable member 13 to reset. Even if the elastic member 15 is not provided, the movable member 13 will be lifted up when the flush button of the valve core mechanism 4 is reset upward to drive the movable member 13 to reset. In another embodiment, the elastic member 15 may also be a tension spring located in the upper cavity, and is used to pull the movable member 13 upward to drive the movable member 13 to reset. The provision of the elastic member 15 to drive the movable member 13 to reset can well ensure that a certain gap is maintained between the movable member 13 and the flush button of the automatic drainage mechanism 1 in the natural state, and ensure that the valve core mechanism 4 can be completely reset, so that the plug 43 can well seal the water outlet 5, which has a good practical significance. The valve core mechanism 4 is provided with two buttons of large flush and small flush; the control device is provided with a pair of automatic drainage mechanisms 1, a pair of pressurizing mechanisms 2, and a pair of pressure relief mechanisms 3, so as to press the two buttons of large flush and small flush respectively, so that the control device of the present invention has two flushing modes of large flush and small flush, which has good practical significance.

[0036] Depend on Figures 3 to 5 As shown, in this embodiment, the buoyancy member 31 has a cavity or a slot 32 opening downward to increase buoyancy. Specifically, the first channel 12 is opened downward. The buoyancy member 31 is provided with a cavity or a slot 32 opening downward to increase the buoyancy of the buoyancy member 31, and the first channel 12 is more tightly blocked upward, which has a better sealing effect and has good practical significance.

[0037] Depend on Figures 3 to 5 As shown, in this embodiment, the housing 14 is provided with a limiting portion 18 extending outward, and the limiting portion 18 is provided with a movable channel 17 in the up-down direction. The limiting portion 18 can cover or be sleeved on the limiting portion 18 of the buoyancy member 31, so that the buoyancy member 31 is located in the movable channel 17 and can move up and down. Specifically, the limiting portion 18 is annular, and the buoyancy member 31 is sleeved in the annular limiting portion 18, so that the buoyancy member 31 can only move up and down; or the limiting portion 18 is provided with a downward opening to cover the buoyancy member 31, so that the buoyancy member 31 can only move up and down along the opening. This allows the buoyancy member 31 to accurately block the first channel 12 each time it floats.

[0038] Depend on Figures 3 to 5 As shown, in this embodiment, the buoyancy member 31 is hinged to the housing 14 and is provided with an inclined end surface 33; the buoyancy member 31 can be hinged to rotate the inclined end surface 33 into a horizontal end surface and block the first channel 12. Specifically, Figure 3 When the buoyancy member 31 blocks the first channel 12, the whole is in an inclined state, and the upper end surface is horizontal and blocks the outlet of the first channel 12. Figure 4The buoyancy member 31 is shown in a vertical state after falling, and its upper end surface is inclined. The inclined upper end surface design allows the buoyancy member 31 to be subjected to a greater force on one side when falling, and can be more easily separated from the outlet of the first channel 12. The buoyancy member 31 is hinged to the shell 14, so that each time the buoyancy member 31 floats, the inclined end surface 33 can accurately block the air outlet of the first channel 12, which has good practical significance.

[0039] Second embodiment:

[0040] Only the differences between the second embodiment and the first embodiment are described below, and the same parts as the first embodiment are not repeated here.

[0041] Depend on Figure 6 As shown, in this embodiment, the movable member 13 is connected to the plug 43 through a connecting rod 42, and the pressurizing hole 16 of the pressurizing mechanism 2 connected to the chamber 11 is located below the movable member 13; the pressurizing mechanism 2 can pressurize the chamber 11 to drive the movable member 13 to move upward, and drive the plug 43 to detach from the water outlet 5. Specifically, the transmission assembly includes a connecting rod 42 connected to the plug 43. The automatic drainage mechanism 1 and the pressure relief mechanism 3 are arranged in the middle or lower part of the valve core mechanism 4, and the movable member 13 is connected to the connecting rod 42. The up and down movement of the movable member 13 can drive the connecting rod 42 to move up and down, so that the plug 43 closes or opens the water outlet 5. The lower chamber is respectively connected to the pressurizing mechanism 2 and the first channel 12, and the upper chamber is connected to the atmosphere or the water tank. The pressurizing mechanism 2 pressurizes the lower chamber and pushes the movable member 13 to move upward to drive the connecting rod 42 to move upward, and causes the plug 43 to move upward and detach from the water outlet 5. The elastic member 15 is a compression spring and is arranged in the upper cavity to press the movable member 13 downward to reset the movable member 13. The pressurizing assembly also includes a one-way valve connected to the lower cavity to allow gas or liquid to enter the lower cavity through the one-way valve during manual flushing, so that the movable member 13 can move upward.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A control device for a drain valve, used to control the opening and closing of the drain valve, characterized in that , the control device comprises: The automatic drainage mechanism (1) is connected to the drainage valve through transmission. A pressurizing mechanism (2) capable of applying pressure to the automatic drainage mechanism through electric drive; A pressure relief mechanism (3), comprising a buoyancy member (31), wherein the buoyancy member (31) can move according to the water level, so that the automatic drainage mechanism (1) can increase the pressure and drive the drainage valve to open, or release the pressure and drive the drainage valve to close; The drain valve has a valve core mechanism (4), the valve core mechanism (4) comprising a plug (43) capable of sealing a water outlet (5) of a water tank; the automatic drain mechanism (1) is provided with a chamber (11) and a first channel (12) connecting the chamber (11) and the outside; the automatic drain mechanism (1) comprises a movable part (13) movably arranged in the chamber (11) and transmission-connected to the plug (43); the pressurizing mechanism (2) is connected to the chamber (11); The buoyancy member (31) is located in the water tank and can block the first channel (12) by buoyancy, so that when the pressurizing mechanism (2) pressurizes the automatic drainage mechanism (1), the pressure of the chamber (11) can be increased, so that the movable member (13) located in the chamber (11) moves; The automatic drainage mechanism (1) comprises a housing (14) provided with the housing cavity (11) and the first channel (12); the housing (14) is provided with a movable channel (17) in an up-and-down direction; the buoyancy member (31) is movably arranged in the movable channel (17); The automatic drainage mechanism (1) further comprises a shell (14) provided with the housing (11) and the first channel (12); the buoyancy member (31) is hinged to the shell (14) and is provided with an inclined end surface (33); the buoyancy member (31) is capable of hinged movement so that the inclined end surface (33) rotates into a horizontal end surface and blocks the first channel (12).

2. A control device for a drain valve according to claim 1, characterized in that The valve core mechanism (4) further comprises a transmission assembly, which is respectively connected to the plug (43) and the movable part (13) in a transmission manner, and the pressurizing hole (16) of the pressurizing mechanism (2) connected to the cavity (11) is located above the movable part (13); The pressurizing mechanism (2) is capable of pressurizing the chamber (11) to drive the movable member (13) to move downward, and to drive the plug (43) to detach from the water outlet (5) through the transmission assembly.

3. A control device for a drain valve according to claim 2, characterized in that The valve core mechanism (4) further comprises a manual button (41) which is transmission-connected to the transmission assembly, and the manual button (41) can be pressed to drive the plug (43) to detach from the water outlet (5) through the transmission assembly.

4. A control device for a drain valve according to claim 1, characterized in that The movable part (13) is connected to the plug (43) via a connecting rod (42), and the pressurizing hole (16) of the pressurizing mechanism (2) connected to the chamber (11) is located below the movable part (13); The pressurizing mechanism (2) is capable of pressurizing the chamber (11) to drive the movable member (13) to move upward and drive the plug (43) to detach from the water outlet (5).

5. A control device for a drain valve according to claim 4, characterized in that The valve core mechanism (4) further comprises a transmission assembly and a manual button (41), wherein the transmission assembly is respectively connected to the plug (43) and the manual button (41); the manual button (41) can be pressed to drive the plug (43) to detach from the water outlet (5) through the transmission assembly.

6. A control device for a drain valve according to claim 1, characterized in that The buoyancy member (31) has a cavity or a downwardly opening hollow groove (32) for increasing buoyancy.

7. A control device for a drain valve according to any one of claims 1 to 6, characterized in that The automatic drainage mechanism (1) further comprises an elastic member (15) located in the cavity (11).

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