Drain valve device

Abstract

The utility model discloses a drain valve device which comprises a valve body mechanism and an air pressure driving mechanism. The valve body mechanism comprises an overflow pipe, the upper end of the overflow pipe is connected with an overflow cup, the overflow cup is located above a top cover of the valve body mechanism, and the overflow cup can be rotationally adjusted relative to the overflow pipe. A cup body of the overflow cup is pivotally connected and communicated with the overflow pipe, and two opposite sides of the cup body are respectively provided with a baffle. The air pressure driving mechanism comprises two air bag driving modules. The bottom of the air pressure driving mechanism is detachably connected with the top cover, and the two air bag driving modules are correspondingly located between the two baffles and the top cover. Due to the fact that the overflow cup can rotate and be adjusted relative to the overflow pipe, two baffles on the overflow cup can avoid two air bag driving modules of the air pressure driving mechanism, the air pressure driving mechanism can be conveniently installed from top to bottom, later-period independent disassembly and maintenance are also facilitated, and a drainage valve device (comprising a valve body mechanism and the air pressure driving mechanism) does not need to be integrally replaced. And the later maintenance cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of toilet water tanks, in particular to a drainage valve device. Background Art

[0002] Some drain valves in toilet tanks are opened by air pressure drive for drainage. The air pressure drive mechanism usually includes two airbag drive modules, one is called a small gear drive module, and the other is called a large gear drive module. A large gear limit plate and a small gear limit plate are respectively provided on both sides of the top of the overflow pipe of the valve body mechanism, and the small gear limit plate is lower than the large gear limit plate.

[0003] In the prior art, the pneumatic drive mechanism is arranged at the top of the drain valve, and its small gear drive module is located below the small gear limit plate, and the large gear drive module is located below the large gear limit plate. When the airbag in the small gear drive module is inflated, it can move up to a first preset height against the small gear limit plate, so as to drive the overflow pipe to rise to the first preset height, thereby realizing the small gear drainage of the water tank. When the airbag in the large gear drive module is inflated, it can move up to a second preset height against the large gear limit plate, so as to drive the overflow pipe to rise to the second preset height, thereby realizing the large gear drainage of the water tank.

[0004] Since the overflow pipe can only be lifted and moved but not rotated relative to the housing of the drain valve, the large-gear limit plate and the small-gear limit plate are respectively blocked above the large-gear drive module and the small-gear drive module. In the prior art, the base of the pneumatic drive mechanism and the top cover of the valve body mechanism are often formed into one piece, and the pneumatic drive mechanism and the valve body mechanism are set as an integrated structure. This integrated drain valve structure, when used in some water tanks with small maintenance windows, is limited by space, and the integrated drain valve cannot be removed or installed through the water tank window during maintenance. When the integrated drain valve fails in the pneumatic drive mechanism or the drain valve, the valve body mechanism and the pneumatic drive mechanism are generally replaced as a whole, which is costly. Utility Model Content

[0005] The utility model aims to overcome the deficiencies of the prior art and to provide a drain valve device, in which a pneumatic drive mechanism and a valve body mechanism are detachably connected, an overflow cup is connected to the upper end of the overflow pipe, and the overflow cup can be rotatably adjusted relative to the overflow pipe so that the baffle on the overflow cup can avoid the two airbag drive modules of the pneumatic drive mechanism, thereby facilitating the installation of the pneumatic drive mechanism from top to bottom and facilitating separate disassembly and maintenance at a later time. The user can take out the disassembled valve body mechanism and / or the pneumatic drive mechanism from the water tank window for maintenance, or can put the separated valve body mechanism and / or the pneumatic drive mechanism from the water tank window into the water tank for installation, without having to replace the drain valve device (including the valve body mechanism and the pneumatic drive mechanism) as a whole, which is conducive to reducing the later maintenance cost.

[0006] The technical solution of the utility model provides a drain valve device, comprising a valve body mechanism with an overflow pipe and a pneumatic drive mechanism with two airbag drive modules;

[0007] The upper end of the overflow pipe extends above the top cover of the valve body mechanism, and the upper end of the overflow pipe is connected to an overflow cup;

[0008] The overflow cup comprises a cup body pivotally connected and communicated with the overflow pipe and two baffles connected to opposite sides of the cup body;

[0009] The bottom of the air pressure driving mechanism is detachably connected to the top cover, and the two airbag driving modules are respectively located between the two baffles and the top cover.

[0010] In one of the optional technical solutions, a plug-in column is provided at the bottom of the pneumatic drive mechanism, and a plug-in hole is correspondingly provided on the top cover;

[0011] The plug-in column is detachably connected to the plug-in hole.

[0012] In one of the optional technical solutions, at least one plug-in column is connected below the base of each of the airbag drive modules;

[0013] Correspondingly, a plug hole is provided on the top cover at a position corresponding to each plug post;

[0014] Each of the plug-in posts is correspondingly plugged into one of the plug-in holes.

[0015] In one of the optional technical solutions, a plug-in tube is provided at the bottom of the cup body, and the plug-in tube is plugged into the upper end of the overflow pipe.

[0016] In one of the optional technical solutions, a sealing ring is provided between the plug-in tube and the wall surface of the upper end pipe opening.

[0017] In one of the optional technical solutions, the circumferential surface of the plug-in tube is provided with at least one circle of mounting grooves, and the sealing ring is installed in the mounting grooves.

[0018] In one of the optional technical solutions, an elastic buckle is provided on the tube wall of the plug-in tube, and a flange is correspondingly provided in the upper end tube opening;

[0019] The elastic buckle is clamped with the flange.

[0020] In one of the optional technical solutions, a plurality of the elastic buckles are provided on the tube wall of the plug-in tube at intervals along the circumferential direction, and a circle of the flange is provided in the upper end tube opening.

[0021] In one of the optional technical solutions, a limit groove for limiting the rotation angle of the overflow cup is provided on the top surface of the upper end pipe opening;

[0022] A positioning protrusion is provided on the bottom surface of the cup body or the side of the plug-in tube, and the positioning protrusion can be slidably arranged in the limiting groove.

[0023] In one of the optional technical solutions, the bottom surface of the cup body falls on the top surface of the upper end pipe opening, and the positioning protrusion is arranged on the bottom surface of the cup body.

[0024] The above technical solution has the following beneficial effects:

[0025] The drain valve device provided by the utility model includes a valve body mechanism and a pneumatic drive mechanism. The valve body mechanism includes an overflow pipe, the upper end of the overflow pipe is connected to an overflow cup, the overflow cup is located above the top cover of the valve body mechanism, and the overflow cup can be rotated and adjusted relative to the overflow pipe. The cup body of the overflow cup is pivotally connected and connected to the overflow pipe, and a baffle is provided on opposite sides of the cup body. The pneumatic drive mechanism includes two airbag drive modules. The bottom of the pneumatic drive mechanism is detachably connected to the top cover, and the two airbag drive modules are correspondingly located between the two baffles and the top cover.

[0026] Since the overflow cup can be rotated and adjusted relative to the overflow pipe, the two baffles on the overflow cup can avoid the two airbag drive modules of the pneumatic drive mechanism, which is convenient for installing the pneumatic drive mechanism from top to bottom, and also convenient for subsequent separate disassembly and maintenance. The user can take out the disassembled valve body mechanism and / or pneumatic drive mechanism from the water tank window for maintenance, or put the separated valve body mechanism and / or pneumatic drive mechanism into the water tank through the water tank window for installation. There is no need to replace the drain valve device (including the valve body mechanism and the pneumatic drive mechanism) as a whole, which is beneficial to reducing subsequent maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The disclosure of the present invention will become easier to understand with reference to the accompanying drawings. It should be understood that these drawings are only for illustrative purposes and are not intended to limit the scope of protection of the present invention. In the drawings:

[0028] Figure 1 A three-dimensional diagram of a drain valve device provided in one embodiment of the utility model;

[0029] Figure 2 An exploded view of a drain valve device provided in one embodiment of the utility model;

[0030] Figure 3 is a three-dimensional diagram of a pneumatic drive mechanism;

[0031] Figure 4 This is an exploded diagram of the pneumatic drive mechanism;

[0032] Figure 5 is a three-dimensional diagram of the valve body mechanism;

[0033] Figure 6 It is a stereoscopic image of the overflow cup after it is rotated 90° along arrow A;

[0034] Figure 7 This is a schematic diagram of the overflow cup rotating 90 degrees to avoid the airbag drive module;

[0035] Figure 8 This is an exploded view of the valve body mechanism;

[0036] Fig. 9 is a three-dimensional diagram of the overflow cup;

[0037] Fig.10 is a stereogram of the overflow pipe;

[0038] Fig.11 is a cross-sectional view of the valve body mechanism;

[0039] Fig.12 for Fig.11 An enlarged schematic diagram of part B;

[0040] Fig.13 for Fig.12 Exploded diagram. DETAILED DESCRIPTION

[0041] The specific implementation of the utility model is further described below in conjunction with the accompanying drawings. The same parts are represented by the same figure numbers. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the accompanying drawings, and the words "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0042] like Figure 1-8 As shown, a drain valve device provided by an embodiment of the utility model includes a valve body mechanism 1 having an overflow pipe 13 and a pneumatic drive mechanism 2 having two airbag drive modules 21 .

[0043] The upper end of the overflow pipe 13 extends above the top cover 12 of the valve body mechanism 1 , and the upper end of the overflow pipe 13 is connected to an overflow cup 14 .

[0044] The overflow cup 14 includes a cup body 141 pivotally connected to and in communication with the overflow pipe 13 , and two baffles 142 connected to opposite sides of the cup body 141 .

[0045] The bottom of the pneumatic drive mechanism 2 is detachably connected to the top cover 12 , and the two airbag drive modules 21 are respectively located between the two baffles 142 and the top cover 12 .

[0046] The drain valve device provided by the utility model includes a valve body mechanism 1 and a pneumatic drive mechanism 2. The valve body mechanism 1 includes a housing 11, a top cover 12, and an overflow pipe 13. The internal structure of the valve body mechanism 1 is consistent with the existing valve body mechanism structure design, and will not be repeated here. The overflow pipe 13 is slidably connected to the housing 11, and can float up and down relative to the housing 11. Fig.11 As shown, the lower end of the overflow pipe 13 is connected to a sealing valve plate 134. During assembly, a valve seat (not shown) will be connected to the bottom of the housing 11. The sealing valve plate 134 can seal the top opening of the valve seat, and the water tank does not drain water into the toilet at this time. The sealing valve plate 134 can move up and away from the valve seat along with the overflow pipe 13, thereby opening the top opening of the valve seat, and the water tank drains water into the toilet at this time. Under normal circumstances, the overflow pipe 13 has two upward movement postures, which drive the sealing valve plate 134 to leave the valve seat at different heights, and the water tank achieves two-stage drainage, namely large-stage drainage and small-stage drainage.

[0047] The upper end of the overflow pipe 13 passes through the top cover 12, and the upper end of the overflow pipe 13 is also connected to an overflow cup 14. The overflow cup 14 can be rotated and adjusted relative to the overflow pipe 13. The overflow cup 14 includes a cup body 141 and two baffles 142. The two baffles 142 are arranged on opposite sides of the cup body 141 to stop the airbag drive module 21 below.

[0048] The cup body 141 is pivotally connected to the overflow pipe 13 , and the bottom of the cup body 141 has an opening to communicate with the overflow pipe 13 without hindering the overflow function of the overflow pipe 13 .

[0049] The pneumatic drive mechanism 2 includes two airbag drive modules 21. The two airbag drive modules 21 are connected by a bracket 22, and each airbag drive module 21 is connected to the control panel through an air pipe 23. The user can operate the button on the control panel to control the inflation of each airbag drive module 21. When the user lets go, the airbag drive module 21 starts to exhaust.

[0050] The strokes of the two airbag drive modules 21 can be limited by the pneumatic drive mechanism to distinguish between large and small gears of drainage. In this case, the two baffles 142 can be set at the same height. If the stroke of one airbag drive module 21 is longer than that of the other airbag drive module 21, the airbag drive module 21 with the longer stroke can be called a large gear airbag drive module, and the airbag drive module 21 with the shorter stroke can be called a small gear airbag drive module.

[0051] The travel of the two airbag drive modules 21 can also be limited by setting the height of the two baffles 142 to distinguish between large and small gear drainage. If the bottom surface of one baffle 142 is lower than the bottom surface of the other baffle 142, the lower baffle 142 is called the small gear baffle, and the higher baffle 142 is called the large gear baffle. The two airbag drive modules 21 are correspondingly located between the two baffles 142 and the top cover 12, that is, each airbag drive module 21 is located below a baffle 142. A set of airbag drive modules 21 located below the small gear baffle is called a small gear airbag drive module, and a set of airbag drive modules 21 located below the large gear baffle is called a large gear airbag drive module.

[0052] The pneumatic drive mechanism 2 is mounted on the top cover 12 , and the bottom of the pneumatic drive mechanism 2 is detachably connected to the top cover 12 , specifically by a detachable connection method such as snap connection or plug connection.

[0053] The airbag driving module 21 includes a base 211, a fixing sleeve 212 connected to the base 211, an airbag 213 disposed in the fixing sleeve 212, and a sliding sleeve 214 slidably connected to the fixing sleeve 212 and capable of being lifted up by the airbag 213. The sliding sleeve 214 is lifted up by inflating the airbag 213, and then the baffle 142 above is lifted up by the sliding sleeve 214, thereby driving the overflow pipe 13 to move upward.

[0054] When the airbag 213 in the small-gear airbag driving module is inflated, the sliding sleeve 214 of the small-gear airbag driving module will lift up a baffle 142 (small-gear baffle), and the overflow pipe 13 drives the sealing valve plate 134 to move up a first distance, and the water tank realizes small-gear drainage.

[0055] When the airbag 213 in the large-speed airbag driving module is inflated, the sliding sleeve 214 of the large-speed airbag driving module will lift up another baffle 142 (large-speed baffle), and the overflow pipe 13 drives the sealing valve plate 134 to move up a second distance, wherein the second distance is greater than the first distance, and the water tank realizes large-speed drainage.

[0056] After the air bag 213 is exhausted, the overflow pipe 13 drives the sealing valve plate 134 to fall back, and the sealing valve plate 134 seals the top opening of the valve seat.

[0057] The drain valve device provided by the utility model is easy to assemble and disassemble for maintenance. The specific reasons are as follows:

[0058] Since the overflow cup 14 can be rotated and adjusted relative to the overflow pipe 13, the two baffles 142 on the overflow cup 14 can avoid the two airbag driving modules 21 of the pneumatic driving mechanism 2 for easy installation and removal.

[0059] When the pneumatic drive mechanism 2 needs to be installed on the top cover 12, Figure 6-7As shown, after the user rotates the overflow cup 14 about 90 degrees along the arrow A by hand, the two baffles 142 avoid the installation space of the airbag drive module 21. The user holds the pneumatic drive mechanism 2 and installs it on the top cover 12 from top to bottom. After pressing the pneumatic drive mechanism 2 hard, the pneumatic drive mechanism 2 is fixed to the top cover 12, and then the overflow cup 14 is rotated in the opposite direction, so that the two baffles 142 are respectively blocked above the two sets of airbag drive modules 21, and the installation of the pneumatic drive mechanism 2 is completed.

[0060] When the airbag drive module 21 in the air pressure drive mechanism 2 fails and needs to be replaced, the user manually rotates the overflow cup 14 by about 90 degrees, and the two baffles 142 avoid the airbag drive module 21 below. The user pulls up the air pressure drive mechanism 2 with force to remove the air pressure drive mechanism 2 from the top cover 12, and repairs or replaces the air pressure drive mechanism 2 separately.

[0061] To sum up, in the drain valve device provided by the utility model, since the overflow cup 14 can be rotated and adjusted relative to the overflow pipe 13, the two baffles 142 on the overflow cup 14 can avoid the two airbag drive modules 21 of the pneumatic drive mechanism 2, which is convenient for installing the pneumatic drive mechanism 2 from top to bottom, and also convenient for subsequent separate disassembly and maintenance. The user can take out the disassembled valve body mechanism 1 and / or the pneumatic drive mechanism 2 from the water tank window for maintenance, or put the separated valve body mechanism 1 and / or the pneumatic drive mechanism 2 into the water tank from the water tank window for installation. There is no need to replace the drain valve device (including the valve body mechanism 1 and the pneumatic drive mechanism 2) as a whole, which is beneficial to reducing the subsequent maintenance cost.

[0062] Preferably, the baffle 142 and the cup body 141 are integrally injection molded.

[0063] In one embodiment, if Figure 3-6 As shown, a plug-in column 24 is provided at the bottom of the pneumatic drive mechanism 2, and a plug-in hole 121 is correspondingly provided on the top cover 12. The plug-in column 24 is detachably connected to the plug-in hole 121.

[0064] In this embodiment, a plug-in column 24 is provided at the bottom of the pneumatic drive mechanism 2. If the bottom of the pneumatic drive mechanism 2 has a base, the plug-in column 24 is provided at the bottom of the base. As required, the plug-in column 24 may also be provided at the bottom of the base 211 of the airbag drive module 21, or at the bottom of the bracket 22. A plug-in hole 121 is provided on the top cover 12 at a position corresponding to the plug-in column 24. During assembly, the plug-in column 24 is inserted into the plug-in hole 121 from top to bottom. The radius of the plug-in column 24 is slightly larger than the radius of the plug-in hole 121, and the plug-in column 24 is interference-fitted in the plug-in hole 121.

[0065] The number of the plug-in posts 24 and the plug-in holes 121 can be set according to actual needs. For example, the plug-in posts 24 and the plug-in holes 121 can be respectively provided at multiple positions to improve installation stability.

[0066] In one embodiment, if Figure 3-6 As shown, at least one plug-in column 24 is connected below the base 211 of each airbag driving module 21 .

[0067] Correspondingly, a plug hole 121 is provided on the top cover 12 at a position corresponding to each plug post 24 .

[0068] Each plug-in column 24 is correspondingly plugged into one of the plug-in holes 121 .

[0069] In this embodiment, in order to improve the installation stability of each airbag driving module 21 and reduce the height of the air pressure driving mechanism 2, the bottom of the air pressure driving mechanism 2 is no longer specially provided with a base, but at least one plug-in column 24 is connected to the bottom of the base 211 of the two airbag driving modules 21, and a plurality of plug-in holes 121 are correspondingly provided on the top cover 12. During assembly, the plug-in column 24 under each base 211 is plugged into the plug-in hole 121 below, so that each airbag driving module 21 is firmly installed on the top cover 12. Since there is no need to specially provide a base, the height dimension of the air pressure driving mechanism 2 is also reduced.

[0070] Preferably, the plug-in column 24 and the base 211 are integrally injection molded.

[0071] In one embodiment, if Figure 8-12 As shown, a plug-in tube 143 is provided at the bottom of the cup body 141 , and the plug-in tube 143 is plugged into the upper end pipe opening 131 of the overflow pipe 13 .

[0072] In this embodiment, in order to facilitate the assembly of the cup body 141 to the upper end of the overflow pipe 13, a plug-in tube 143 is provided at the bottom of the cup body 141, and the radius of the plug-in tube 143 is smaller than the radius of the cup body 141. During assembly, the plug-in tube 143 is plugged downward into the upper end pipe opening 131 of the overflow pipe 13, and the plug-in tube 143 can rotate in the upper end pipe opening 131, and the two are sealed and assembled.

[0073] Preferably, the insert tube 143 and the cup body 141 are integrally injection molded.

[0074] In one embodiment, if Figure 8-12 As shown, a sealing ring 15 is provided between the plug-in tube 143 and the wall surface of the upper end pipe opening 131 to further improve the sealing performance between the plug-in tube 143 and the wall surface of the upper end pipe opening 131 and avoid water leakage when the plug-in tube 143 is rotated.

[0075] In one embodiment, if Figure 8-12As shown, the circumferential surface of the plug-in tube 143 is provided with at least one circle of mounting grooves 144 , and the sealing ring 15 is installed in the mounting grooves 144 .

[0076] In this embodiment, an annular mounting groove 144 is provided on the circumferential surface of the plug-in tube 143 to mount and fix the sealing ring 15 , thereby improving the assembly stability of the sealing ring 15 and preventing the sealing ring 15 from moving in the up and down directions.

[0077] In one embodiment, if Figure 9-13 As shown, an elastic buckle 145 is provided on the tube wall of the plug-in tube 143, and a flange 132 is correspondingly provided in the upper tube opening 131. The elastic buckle 145 is engaged with the flange 132.

[0078] In this embodiment, in order to prevent the plug-in tube 143 from automatically detaching upward from the upper tube opening 131, a radially protruding elastic buckle 145 is provided on the tube wall of the plug-in tube 143, and correspondingly, an inwardly protruding flange 132 is provided in the upper tube opening 131. When the plug-in tube 143 is inserted downward, the elastic buckle 145 will be compressed and deformed and pass over the flange 132 downward, and then be stuck under the flange 132, thereby preventing the plug-in tube 143 from detaching from the upper tube opening 131.

[0079] Preferably, the elastic buckle 145 is integrally formed by injection molding with the plug-in tube 143. The flange 132 is integrally formed by injection molding with the tube wall of the upper tube opening 131.

[0080] In one embodiment, if Figure 9-10 As shown, a plurality of elastic buckles 145 are provided on the tube wall of the plug-in tube 143 at intervals along the circumferential direction, and a circle of flanges 132 are provided in the upper end tube opening 131 .

[0081] In this embodiment, a plurality of elastic buckles 145 are arranged along the circumferential direction on the tube wall of the plug tube 143. The plurality of elastic buckles 145 are arranged at intervals so as not to affect each other's deformation. A ring-shaped flange 132 is provided in the upper end tube opening 131. When the plug tube 143 is inserted downward, each elastic buckle 145 will pass over the flange 132 downward and then be stuck under the flange 132, thereby improving the assembly stability of the plug tube 143.

[0082] In one embodiment, if Figure 9-10 As shown, a limiting groove 133 for limiting the rotation angle of the overflow cup 14 is provided on the top surface of the upper end pipe opening 131 .

[0083] A positioning protrusion 146 is provided on the bottom surface of the cup body 141 or the side of the plug-in tube 143 , and the positioning protrusion 146 is slidably disposed in the limiting groove 133 .

[0084] In this embodiment, a limiting groove 133 is provided on the top surface of the tube wall of the upper end pipe mouth 131 to limit the rotation angle of the overflow cup 14. The limiting groove 133 is arc-shaped, and its central angle is slightly greater than 90° to ensure that the overflow cup 14 can rotate 90°. A positioning protrusion 146 is provided on the bottom surface of the cup body 141 or the side of the plug-in tube 143. After the plug-in tube 143 is inserted into the upper end pipe mouth 131 and in place, the positioning protrusion 146 is in the limiting groove 133. When the plug-in tube 143 is rotated, the positioning protrusion 146 can slide in the limiting groove 133. When the positioning protrusion 146 is blocked by the groove walls at both ends of the limiting groove 133, it indicates that the overflow cup 14 has rotated or swung into place.

[0085] In one embodiment, if Figure 9-12 As shown, the bottom surface of the cup body 141 falls on the top surface of the upper end pipe opening 131 , and the positioning protrusion 146 is provided on the bottom surface of the cup body 141 .

[0086] In this embodiment, after the plug-in tube 143 is inserted into the upper tube opening 131, the bottom surface of the cup body 141 falls on the top surface of the upper tube opening 131, and the cup body 141 is supported by the tube wall of the upper tube opening 131, thereby improving the stability of the cup body 141. The positioning protrusion 146 is arranged on the bottom surface of the cup body 141, and when the bottom surface of the cup body 141 falls on the top surface of the upper tube opening 131, the positioning protrusion 146 directly falls into the limiting groove 133, which is convenient for assembly.

[0087] Preferably, the positioning protrusion 146 and the cup body 141 are integrally injection molded.

[0088] The following is a brief introduction to the working principle of the drain valve device. For the detailed working process, please refer to the relevant introduction in the prior art.

[0089] like Fig.11 As shown, the housing 11 of the valve body mechanism 1 is provided with a small gear float 16, a small gear hanger 17 connected to the small gear float 16, a large gear float 18, and a large gear hanger 19 connected to the large gear float 18. The small gear float 16 is generally connected to the small gear float 16 by a rocker arm, and the large gear hanger 19 can be directly connected to the large gear float 18 or connected by a rocker arm. As required, grooves and / or protrusions can be provided on the wall of the overflow pipe 13 for the small gear hanger 17 / large gear hanger 19 to hang the overflow pipe 13. For the assembly relationship between the small gear float 16, the small gear hanger 17, the large gear float 18, the large gear hanger 19 and the overflow pipe 13, reference can be made to the relevant introduction in the prior art.

[0090] When the user operates the control panel to inflate the airbag 213 in the small gear airbag drive module, the airbag 213 expands and pushes the sliding sleeve 214 upward. The sliding sleeve 214 moves upward against the small gear baffle until the sliding sleeve 214 reaches the small gear limit position. When the sliding sleeve 214 moves upward against the small gear baffle, the overflow pipe 13 and its accessories move upward as a whole. When the overflow pipe 13 stops moving upward, the small gear hanger 17 is driven upward by the rocker arm, so that the small gear hanger 17 hangs on the overflow pipe 13, so that the overflow pipe 13 will not fall, and the water tank will discharge water into the toilet at a small gear.

[0091] When the water in the water tank is lower than the small gear float 16, the small gear float 16 falls, and the small gear hanger 17 is driven downward by the rocker arm, the overflow pipe 13 is separated from the small gear hanger 17, the overflow pipe 13 and its accessories fall, and the sealing valve plate 134 seals the top opening of the valve seat.

[0092] When the user operates the control panel to inflate the airbag 213 in the large-gear airbag driving module, the airbag 213 expands and pushes the sliding sleeve 214 upward. The sliding sleeve 214 moves upward against the large-gear baffle until the sliding sleeve 214 reaches the large-gear limit position. When the sliding sleeve 214 moves upward against the large-gear baffle, the overflow pipe 13 and its accessories move upward as a whole. When the overflow pipe 13 stops moving upward, the large-gear float 18 swings upward at the same time or drives the rocker arm to swing, so that the large-gear hanger 19 hangs the overflow 13, so that the overflow pipe 13 will not fall, and the water tank will discharge large-gear water to the toilet.

[0093] When the water in the water tank is lower than the large gear float 18, the large gear float 18 falls and resets, and at the same time, the large gear hanger 19 is reset, the overflow pipe 13 is separated from the large gear hanger 19, the overflow pipe 13 and its accessories fall, and the sealing valve plate 134 seals the top opening of the valve seat.

[0094] As needed, the above technical solutions can be combined to achieve the best technical effect.

[0095] The above are only the principles and preferred embodiments of the present invention. It should be noted that, for those skilled in the art, on the basis of the principles of the present invention, several other modifications can be made, which should also be considered as the protection scope of the present invention.

Claims

1. A drain valve device, characterized in that: It comprises a valve body mechanism (1) having an overflow pipe (13) and a pneumatic drive mechanism (2) having two airbag drive modules (21); The upper end of the overflow pipe (13) extends above the top cover (12) of the valve body mechanism (1), and the upper end of the overflow pipe (13) is connected to an overflow cup (14); The overflow cup (14) comprises a cup body (141) pivotally connected to and in communication with the overflow pipe (13), and two baffles (142) connected to opposite sides of the cup body (141); The bottom of the air pressure drive mechanism (2) is detachably connected to the top cover (12), and the two airbag drive modules (21) are respectively located between the two baffles (142) and the top cover (12).

2. The drain valve device according to claim 1, characterized in that: The bottom of the pneumatic drive mechanism (2) is provided with a plug-in column (24), and the top cover (12) is correspondingly provided with a plug-in hole (121); The plug-in column (24) is detachably connected to the plug-in hole (121).

3. The drain valve device according to claim 2, characterized in that: At least one plug-in column (24) is connected below the base (211) of each airbag drive module (21); Correspondingly, a plug hole (121) is provided on the top cover (12) at a position corresponding to each plug post (24); Each of the plug-in columns (24) is correspondingly plugged into one of the plug-in holes (121).

4. The drain valve device according to any one of claims 1 to 3, characterized in that: The bottom of the cup body (141) is provided with an insertion tube (143), and the insertion tube (143) is inserted into the upper end pipe opening (131) of the overflow pipe (13).

5. The drain valve device according to claim 4, characterized in that: A sealing ring (15) is provided between the plug-in tube (143) and the wall surface of the upper end tube opening (131).

6. The drain valve device according to claim 5, characterized in that: The circumferential surface of the plug-in tube (143) is provided with at least one circle of mounting grooves (144), and the sealing ring (15) is mounted in the mounting grooves (144).

7. The drain valve device according to claim 4, characterized in that: An elastic buckle (145) is provided on the tube wall of the plug-in tube (143), and a flange (132) is correspondingly provided in the upper tube opening (131); The elastic buckle (145) is snap-connected with the flange (132).

8. The drain valve device according to claim 7, characterized in that: A plurality of elastic buckles (145) are provided on the tube wall of the plug-in tube (143) at intervals along the circumferential direction, and a circle of flanges (132) is provided in the upper tube opening (131).

9. The drain valve device according to claim 4, characterized in that: The top surface of the upper end pipe opening (131) is provided with a limiting groove (133) for limiting the rotation angle of the overflow cup (14); A positioning protrusion (146) is provided on the bottom surface of the cup body (141) or the side of the plug-in tube (143), and the positioning protrusion (146) can be slidably arranged in the limiting groove (133).

10. The drain valve device according to claim 9, characterized in that: The bottom surface of the cup body (141) falls on the top surface of the upper end pipe opening (131), and the positioning protrusion (146) is arranged on the bottom surface of the cup body (141).

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