Drainage device

Abstract

The utility model belongs to the technical field of household appliances, and discloses a drainage device which comprises a drainage valve, a switch structure and an induction circuit, the drainage valve comprises a valve body and a filtering assembly, and the valve body is provided with a water inlet, a water outlet and a water passing opening; the switch structure comprises a shell, a turntable and a sealing assembly, the turntable is in transmission connection with the sealing assembly, and the turntable has a first angle for driving the sealing assembly to close the water passing opening and a second angle for driving the sealing assembly to retract and be away from the water passing opening; the induction circuit is provided with two inductors, magnets are installed on the rotary disc, and the two inductors can induct the magnet located on the rotary disc at the first angle and the magnet located on the rotary disc at the second angle respectively. The inductor is matched with the magnet, so that the control precision and reliability of the drainage device are ensured. The inductor is integrated on the induction circuit, the magnet is integrated on the turntable, the induction circuit turntable and the sealing assembly are integrated on the shell, the structure of the drainage device can be simplified, and the size of the drainage device is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of home appliances, especially to a drainage device. BACKGROUND

[0002] Washing machines, dishwashers and other cleaning household appliances all need to discharge sewage through the drainage device at the liquid discharge port after cleaning, and the drainage device is controlled to discharge by the control system. At present, the installation space at the liquid discharge port of the cleaning household appliance is generally small, while various sensing structures and positioning structures in the drainage device are relatively complex and precise, which not only increases the volume of the drainage device, but also increases the structural complexity of the drainage device, affecting the arrangement and use of the switch structure. If the above structures are removed, the control accuracy of the drainage device will be reduced, affecting the reliability of the drainage device. SUMMARY

[0003] The utility model discloses a drainage device which can accurately sense the opening and closing of the drainage valve, simplify the structure of the drainage device and facilitate the arrangement and use of the drainage device.

[0004] To achieve the above purpose, the utility model adopts the following technical scheme: a drainage device, comprising a drainage valve, a switch structure and a sensing circuit, the drainage valve comprising a valve body and a filter assembly, the valve body being provided with a water inlet, a water outlet and a water passage communicating the water inlet and the water outlet, the filter assembly being detachably installed between the water passage and the water inlet; the switch structure comprising a housing, a rotating disc and a slidable sealing assembly, the housing being sealingly connected with the drainage valve, the rotating disc being arranged in the housing and being drivingly connected with the sealing assembly, the sealing assembly being arranged on the side of the water passage away from the filter assembly, the rotating disc having a first angle for driving the sealing assembly to extend out of the housing and close the water passage and a second angle for driving the sealing assembly to retract into the housing and away from the water passage; the sensing circuit being installed in the housing and being provided with two sensors, the edge of the rotating disc being provided with a magnet, the two sensors being capable of sensing the magnet on the rotating disc at the first angle and the magnet on the rotating disc at the second angle respectively.

[0005] Preferably, a driving plate is arranged between the rotating disc and the sealing assembly, the driving plate being slidingly installed in the housing, one end of the driving plate being connected with the sealing assembly, the other end of the driving plate being provided with a strip-shaped hole, the rotating disc being provided with an eccentric shaft, the eccentric shaft and the magnet being located on the two sides of the center of the rotating disc along the radial direction of the rotating disc, the eccentric shaft being arranged in the strip-shaped hole.

[0006] As preferred, the sealing assembly comprises a pull rod, a spring and a bellows, the housing is provided with a guide hole, the pull rod is arranged in the guide hole and connected with the driving plate, the bellows is arranged in the valve body and located between the housing and the water passage, the pull rod is arranged in the bellows and connected with one end of the bellows facing the water passage, and the spring is located between the bellows and the pull rod and abuts against the inner wall of one end of the bellows facing the water passage.

[0007] As preferred, one of the inner wall of the guide hole and the outer wall of the pull rod is provided with a first guide block, and the other is provided with a first guide groove matched with the first guide block.

[0008] As preferred, the valve body is provided with an annular abutting portion protruding from one side of the water passage facing the bellows and arranged around the water passage.

[0009] As preferred, the filter assembly comprises a filter cartridge and a knob, the filter cartridge is rotationally connected with the knob, the filter cartridge is clamped between the water passage and the water inlet, and the knob is threadedly connected with the valve body.

[0010] As preferred, the filter assembly further comprises a sealing ring, the top end of the filter cartridge is provided with a flange portion, the valve body is provided with a stepped hole for accommodating the flange portion, and the sealing ring abuts between the flange portion and the bottom wall of the stepped hole.

[0011] As preferred, the housing comprises a mounting seat and a cover body, the mounting seat and the cover body are detachably connected, the rotating disc, the sealing assembly and the induction circuit are mounted on the mounting seat, one side of the mounting seat is provided with a buckle groove, and one side of the valve body is provided with a screw buckle capable of being screwed into the buckle groove.

[0012] As preferred, the cover body is provided with a lock block capable of being inserted into the buckle groove to lock the screw buckle.

[0013] As preferred, one side of the cover body facing the mounting seat is provided with a clamping groove, one end of the induction circuit is fixed between the cover body and the mounting seat, and the other end is clamped and matched with the clamping groove.

[0014] The utility model discloses beneficial effect: through setting up filter assembly, filter assembly can carry out rough filtration to the sewage at water inlet, avoid the influence of drainage of water outlet block. Through setting up induction circuit, the inductor on induction circuit senses the magnet on the turntable of second angle, at this moment, the turntable rotates to the second angle, and the sealing assembly retracts and is far away from the water outlet, and the water inlet and the water outlet are completely connected, and the induction circuit can generate and output the drainage valve opening signal. The inductor on induction circuit senses the magnet on the turntable of first angle, at this moment, the turntable rotates to the first angle, and the sealing assembly extends and closes the water outlet, and the water inlet and the water outlet are cut off, and the induction circuit can generate and output the drainage valve closing signal. The inductor and the magnet cooperate, can accurate induction drainage valve's switch condition and generate corresponding signal, guarantee the control precision and reliability of drainage device. The inductor is integrated in induction circuit, and the magnet is integrated in the turntable, and the induction circuit turntable and sealing assembly are integrated in the shell, can simplify the drainage device structure, reduce the drainage device volume, and the drainage device arrangement is convenient to use. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the structure schematic diagram of drainage device of the utility model embodiment;

[0016] Figure 2 It is the explosion drawing of drainage device of the utility model embodiment;

[0017] Figure 3 It is the internal structure schematic diagram of shell of the utility model embodiment;

[0018] Figure 4 It is the sectional view of drainage device of the utility model embodiment;

[0019] Figure 5 It is Figure 4 The enlarged view of A in

[0020] Figure 6 It is the structure schematic diagram of another angle of drainage device of the utility model embodiment.

[0021] In the drawing:

[0022] 100, drainage valve; 110, valve body; 111, water inlet; 112, water passage; 1121, water outlet; 1122, water outlet; 1123, screw buckle; 113, pressure part; 120, filter assembly; 121, filter cartridge; 1211, clamping block; 1212, flange part; 122, knob; 1221, limiting part; 123, sealing ring;

[0023] 200, switch structure; 210, shell; 211, guide hole; 2111, first guide block; 212, mounting seat; 2121, buckle groove; 2122, second guide groove; 213, cover body; 2131, lock block; 2132, clamping groove; 220, rotating disc; 221, magnet; 222, eccentric shaft; 230, sealing assembly; 231, pull rod; 2311, first guide groove; 232, spring; 233, corrugated sleeve; 240, driving plate; 241, strip-shaped hole; 242, second guide block; 250, driving motor;

[0024] 300, induction circuit; 310, inductor. DETAILED DESCRIPTION

[0025] The utility model will be described in further detail below in combination with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the utility model and are not limited to the utility model. In addition, it should be noted that only the parts related to the utility model are shown in the drawings for ease of description, not all the structures.

[0026] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0027] In the utility model, unless otherwise explicitly specified and limited, the "upper" or "lower" of the first feature to the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the "upper", "upper" and "upper" of the first feature to the second feature include that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The "below", "below" and "below" of the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0028] In the description of the embodiment, the terms "upper", "lower", "right", etc. orientation or position relationship is based on the orientation or position relationship shown in the drawings, only for the convenience of description and simplification of operation, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" are only used to distinguish in the description, and have no special meaning.

[0029] Referring to Figures 1 to 6 As shown in the drawings, according to the drainage device provided by the embodiment of the present application, the drainage device comprises a drainage valve 100, a switch structure 200 and an induction circuit 300. The drainage valve 100 comprises a valve body 110 and a filter assembly 120. The valve body 110 is provided with a water inlet 111. A water passage 112 extends from one side of the valve body 110 in a radial direction. An outlet 1121 extends from one side of the water passage 112 away from the water inlet 111. The valve body 110 and the water passage 112 are connected at a water outlet 1122. The water inlet 111 is in communication with the outlet 1121 through the water outlet 1122. The filter assembly 120 is detachably installed on the valve body 110 and located between the water outlet 1122 and the water inlet 111.

[0030] The switch structure 200 comprises a housing 210, a rotating disc 220 and a slidable sealing assembly 230. The sealing assembly 230 is capable of sliding in a radial direction of the valve body 110. The housing 210 is sealingly connected with the drainage valve 100. The rotating disc 220 is arranged in the housing 210 and drivingly connected with the sealing assembly 230. The sealing assembly 230 is arranged on a side of the water outlet 1122 away from the filter assembly 120. The rotating disc 220 has a first angle at which the sealing assembly 230 is driven to extend out of the housing 210 and close the water outlet 1122, and a second angle at which the sealing assembly 230 is driven to retract into the housing 210 and away from the water outlet 1122. The rotating disc 220 is connected with a driving motor 250. The driving motor 250 is installed on an outer wall of the housing 210. An output shaft of the driving motor 250 penetrates into the housing 210 and is fixed to a flat hole in the center of the rotating disc 220. The induction circuit 300 is installed in the housing 210 and provided with two inductors 310. A magnet 221 is installed on an edge of the rotating disc 220. The two inductors 310 are capable of respectively inducting the magnet 221 on the rotating disc 220 at the first angle and the magnet 221 on the rotating disc 220 at the second angle. Optionally, the rotating disc 220 can be connected with the sealing assembly 230 through a gear and rack structure, a cable structure or an eccentric connecting rod structure and the like. The inductor 310 can be a Hall element, a magnetic inductor or a magnetic resistance element and the like which can respond to the movement of the magnet 221. Details are not described herein.

[0031] It can be understood that the drainage device is installed at a sewage discharge position of a bottom of a household appliance such as a dishwasher or a washing machine. When the drainage valve 100 is opened, sewage in a sewage collection tank at the bottom of the dishwasher or the washing machine is in communication with the water inlet 111 of the drainage valve 100. The sewage to be discharged is discharged out of the drainage valve 100 through the water passage 112 and the outlet 1121 under the condition of natural gravity. After the sewage is completely discharged, the control system controls the drainage valve 100 to be closed through the driving motor 250, so as to prevent the sewage from backflowing or the clean water inside the equipment from leaking.

[0032] By setting the filter assembly 120, the filter assembly 120 can coarsely filter the sewage at the water inlet 111, facilitate regular cleaning, and avoid clogging of the water outlet 1122 to affect drainage. By setting the induction circuit 300, the inductor 310 on the induction circuit 300 senses the magnet 221 on the rotating disc 220 at the second angle. At this time, the rotating disc 220 rotates to the second angle, the sealing assembly 230 retracts and moves away from the water outlet 1122, the water inlet 111 and the water outlet 1121 are completely connected, and the induction circuit 300 can generate and output an opening signal of the drain valve 100. The inductor 310 on the induction circuit 300 senses the magnet 221 on the rotating disc 220 at the first angle. At this time, the rotating disc 220 rotates to the first angle, the sealing assembly 230 extends and closes the water outlet 1122, the water inlet 111 and the water outlet 1121 are disconnected, and the induction circuit 300 can generate and output a closing signal of the drain valve 100. The inductor 310 and the magnet 221 cooperate to accurately sense the opening and closing of the drain valve 100 and generate corresponding signals, ensuring the control accuracy and reliability of the drain device. The inductor 310 is integrated in the induction circuit 300, the magnet 221 is integrated in the rotating disc 220, and the induction circuit 300, the rotating disc 220 and the sealing assembly 230 are all integrated in the shell 210, which can effectively improve the integration of the drain device, eliminate the traditional positioning structure, simplify the structure of the drain device, reduce the size of the drain device, and facilitate the arrangement and use of the drain device.

[0033] Further, the filter assembly 120 includes a filter cartridge 121 and a knob 122. Optionally, the filter cartridge 121 has a semi-enclosing structure, the side wall of the filter cartridge 121 is provided with filter holes for sewage to pass through, the filter holes are located on one side of the water outlet hole, and the side of the filter cartridge 121 away from the water outlet hole is further provided with a plurality of limiting columns capable of blocking hair, thread ends and other impurities in the sewage to avoid clogging of the water outlet hole. The filter cartridge 121 is rotationally connected with the knob 122. Specifically, the filter cartridge 121 can be rotationally connected to the bottom end of the filter cartridge 121 through a movable buckle, a positioning pin or the like, which will not be described herein again. The filter cartridge 121 is clamped between the water outlet 1122 and the water inlet 111, and the knob 122 is threadedly connected with the valve body 110. Specifically, the side wall of the filter cartridge 121 is provided with a protruding clamping block 1211, the inner wall of the valve body 110 is provided with a positioning groove for clamping the clamping block 1211, and the filter cartridge 121 is clamped in the valve body 110 through the clamping block 1211 and the positioning groove.

[0034] By setting the filter cartridge 121 and the knob 122 capable of rotating relative to the filter cartridge 121, the user can control the installation or disassembly of the filter assembly 120 by inserting the filter cartridge 121 and rotating the knob 122, which facilitates the user to quickly take out and clean the filter assembly 120 under the premise of ensuring stable installation of the filter cartridge 121 and effective filtration of sewage, and effectively improves the convenience of installation and disassembly of the filter assembly 120.

[0035] Reference Figures 1 to 3As shown, it can be understood that the driving plate 240 is arranged between the rotating disc 220 and the sealing assembly 230, the driving plate 240 is slidingly arranged in the housing 210 along the axial direction of the water passage 112, one end of the driving plate 240 is connected with the sealing assembly 230, and the other end is provided with a strip-shaped hole 241 which is arranged along a direction perpendicular to the sliding direction of the driving plate 240. The rotating disc 220 is provided with an eccentric shaft 222, the eccentric shaft 222 and the magnet 221 are respectively located on two sides of the center of the rotating disc 220 along the radial direction of the rotating disc 220, and the eccentric shaft 222 penetrates the strip-shaped hole 241.

[0036] By arranging the eccentric shaft 222 and the driving plate 240, the transmission structure between the rotating disc 220 and the sealing assembly 230 can be simplified, and the user can conveniently assemble and use. Moreover, by using the eccentric shaft 222 transmission, the magnet 221 and the eccentric shaft 222 are respectively located on two sides of the center of the rotating disc 220 along the radial direction of the rotating disc 220, the transmission characteristics of the eccentric shaft 222 can be utilized to accurately position the near point of the sealing assembly 230 closing the water passage 1122 and the far point of the sealing assembly 230 away from the water passage 1122, for example, the first angle of the rotating disc 220 when the sealing assembly 230 closes the water passage 1122 is the initial angle, and after the rotating disc 220 rotates 180°, the rotating disc 220 is just at the second angle of the sealing assembly 230 away from the water passage 1122, which facilitates the user to arrange the induction circuit 300, and further improves the control accuracy and reliability of the drainage device.

[0037] Referring to Figures 2 to 4 As shown, it can be understood that the sealing assembly 230 comprises a pull rod 231, a spring 232 and a corrugated sleeve 233. The side of the housing 210 facing the valve body 110 is provided with a guide hole 211, and the pull rod 231 penetrates the guide hole 211 and is connected with the driving plate 240. Optionally, the pull rod 231 can be detachably connected with the driving plate 240 through a bolt structure, a pin shaft structure, a clamping groove structure or the like. The corrugated sleeve 233 is arranged in the water passage 112 of the valve body 110 and located between the housing 210 and the water passage 1122, that is, the end of the corrugated sleeve 233 away from the water passage 1122 abuts against the outer wall of the housing 210. Optionally, the end of the corrugated sleeve 233 away from the water passage 1122 is provided with an annular sealing portion which abuts between the outer wall of the housing 210 and the end face of the valve body 110, thereby improving the sealing property between the housing 210 and the valve body 110. The pull rod 231 penetrates into the corrugated sleeve 233 and is clamped with the end of the corrugated sleeve 233 facing the water passage 1122, and the spring 232 is located between the corrugated sleeve 233 and the pull rod 231 and abuts against the inner wall of the end of the corrugated sleeve 233 facing the water passage 1122.

[0038] The corrugated sleeve 233 and the pull rod 231 can simplify the structure of the sealing assembly 230 and effectively improve the sealing performance of the sealing assembly 230 without affecting the sliding expansion of the sealing assembly 230. When the rotary disc 220 is at the first angle and drives the sealing assembly 230 to close the water passage 1122, the spring 232 abuts against the corrugated sleeve 233, which can provide a pre-tightening force for the corrugated sleeve 233, so that the corrugated sleeve 233 abuts against the end face around the water passage 1122, thereby ensuring the water interruption performance of the corrugated sleeve 233.

[0039] Referring to FIGS. 1 and 2, Figure 3 and Figure 4 As shown in FIGS. 1 and 2, it can be understood that one of the inner wall of the guide hole 211 and the outer wall of the pull rod 231 is provided with a first guide block 2111 protruding from the surface, and the other is provided with a first guide groove 2311 matched with the first guide block 2111. Optionally, a plurality of first guide blocks 2111 can be arranged along the circumference of the pull rod 231, and the first guide groove 2311 is arranged one-to-one corresponding to the first guide block 2111.

[0040] Through the first guide block 2111 and the first guide groove 2311, the first guide groove 2311 can guide the first guide block 2111 to move linearly, thereby guiding the pull rod 231 to move linearly along the axis of the water passage 112, effectively improving the movement stability of the pull rod 231. In addition, the two sides of the driving plate 240 can also be symmetrically provided with a second guide block 242, and the inner wall of the shell 210 is symmetrically provided with two second guide grooves 2122, and the second guide block 242 is correspondingly and slidingly assembled in the second guide groove 2122, thereby further improving the movement stability of the pull rod 231 and ensuring the positioning accuracy of the magnet 221 and the inductor 310.

[0041] Referring to FIGS. 1 and 2, Figure 4 As shown in FIGS. 1 and 2, it can be understood that the filter assembly 120 further comprises a sealing ring 123, the outer edge of the top end of the filter cartridge 121 is provided with an annular flange portion 1212, the bottom end of the valve body 110 is provided with a stepped hole for accommodating the flange portion 1212, the opening of the stepped hole is the mounting port of the filter assembly 120, and the sealing ring 123 abuts between the flange portion 1212 and the bottom wall of the stepped hole.

[0042] Through the sealing ring 123, after the knob 122 is screwed tightly, the knob 122 presses the filter cartridge 121 and further compresses the sealing ring 123, thereby effectively improving the sealing performance between the filter assembly 120 and the valve body 110, avoiding sewage leakage, and improving the overall sealing performance of the drainage device.

[0043] Optionally, positioning structures similar to the clamping block 1211 and the positioning groove are arranged between the sealing ring 123 and the inner wall of the valve body 110, so as to improve the installation stability of the sealing ring 123. In this case, the thread with which the valve body 110 cooperates with the knob 122 is a split thread, and the end of the thread of the knob 122 can be provided with a limiting part 1221. The limiting part 1221 moves downward spirally with the rotation of the knob 122 and abuts against the split thread of the valve body 110, so as to limit the rotation of the knob 122 and avoid crushing the filter cartridge 121, thereby improving the structural rationality of the filter assembly 120.

[0044] Referring to Figure 5 As shown in the figure, it can be understood that the valve body 110 is internally provided with an annular abutting part 113 which protrudes from the water passage 1122 towards one side of the corrugated sleeve 233 and is arranged around the water passage 1122. Optionally, the cross section of the abutting part 113 is a large triangle or trapezoid with the outer diameter gradually increasing in the axial direction of the water passage 112 from the housing 210 to the valve body 110, which will not be described here again.

[0045] By arranging the protruding abutting part 113, when the rotating disc 220 is at the first angle and drives the sealing assembly 230 to close the water passage 1122, the corrugated sleeve 233 abuts against the abutting part 113. Since the contact area between the corrugated sleeve 233 and the abutting part 113 is small, the pressure of the corrugated sleeve 233 acting on the abutting part 113 increases, thereby further enhancing the sealing performance of the corrugated sleeve 233 and ensuring the blocking effect of the water inlet 111 and the water outlet 1121.

[0046] Referring to Figure 2 and Figure 3 As shown in the figure, it can be understood that the housing 210 includes a mounting seat 212 and a cover body 213 which are detachably connected. Optionally, the mounting seat 212 can be detachably connected with the cover body 213 in a manner of bolt connection, buckle connection, mortise and tenon connection, lock buckle connection, etc. In this embodiment, the outer wall of the cover body 213 is provided with buckles which are arranged at intervals in the circumferential direction of the cover body 213, and the outer wall of the mounting seat 212 is provided with a plurality of lock blocks 2131 which correspond to the buckles one by one and are buckled and matched.

[0047] The driving motor 250, the rotating disc 220, the sealing assembly 230 and the induction circuit 300 are all mounted on the mounting seat 212. One side of the valve body 110 is provided with a plurality of screw knobs 1123 which protrude along the radial direction of the water passage 112 and are arranged at intervals along the circumferential direction of the water passage 112. One side of the mounting seat 212 is provided with a plurality of buckle grooves 2121 which are formed by the communication between the first groove bodies through which the screw knobs 1123 pass and the second groove bodies through which the screw knobs 1123 rotate, and the screw knobs 1123 can be screwed into the buckle grooves 2121. The drain device is used in an inverted manner, with the knob 122 facing downward and the driving motor 250 facing upward. At this time, the mounting seat 212 is located above the cover body 213.

[0048] By arranging the detachable cover body 213 and the mounting seat 212, on the one hand, the structure of the shell 210 can be simplified, and the user can conveniently assemble and use the drain device. On the other hand, the rotating disc 220, the sealing assembly 230 and the induction circuit 300 are all mounted on the mounting seat 212, so that the user can overhaul, maintain or replace the rotating disc 220, the sealing assembly 230 and the induction circuit 300 by opening the cover body 213, thereby reducing the maintenance cost of the drain device in the later period.

[0049] By arranging the screw knobs 1123 and the buckle grooves 2121, the connection structure between the shell 210 and the valve body 110 can be simplified without affecting the sealing performance between the valve body 110 and the shell 210, thereby facilitating the user to assemble the valve body 110 and effectively improving the assembly convenience of the valve body 110.

[0050] Further, the side of the cover body 213 facing the mounting seat 212 is provided with a clamping groove 2132. The induction circuit 300 is arranged around the output shaft of the driving motor 250, one end of the induction circuit 300 is fixed between the cover body 213 and the mounting seat 212, and specifically, the cover body 213 and the mounting seat 212 are respectively provided with studs at corresponding positions in the plane. The studs on the cover body 213 and the mounting seat 212 are connected by screws and clamp the one end of the induction circuit 300, and the other end of the induction circuit 300 is clamped and matched with the clamping groove 2132.

[0051] By arranging the clamping groove 2132, the clamping groove 2132 fixes the other end of the induction circuit 300 which is not clamped by the bolt, so that the bolt structure can be omitted, the overall weight of the switch structure 200 is reduced, the structure of the shell 210 is simplified, and the clamping groove 2132 can pre-position the induction circuit 300, thereby improving the assembly convenience of the induction circuit 300.

[0052] Referring to FIG. 1, Figure 6 As shown in FIG. 1, it can be understood that the cover body 213 is provided with a locking block 2131 which protrudes towards the valve body 110 and can be inserted into the buckle groove 2121 at the bottom to lock the screw knob 1123.

[0053] By setting the lock block 2131, the user can first connect the valve body 110 with the mounting seat 212 through the cooperation of the screw buckle 1123 and the buckle groove 2121, and then connect the cover body 213 with the mounting seat 212, so that the lock block 2131 is inserted into the buckle groove 2121 at the bottom end to lock the screw buckle 1123, thereby locking the valve body 110, effectively improving the connection stability of the valve body 110 and the shell 210, and improving the overall structural tightness of the drainage device.

[0054] Obviously, the above embodiments of the present application are only examples for clearly illustrating the present application, and are not intended to limit the embodiments of the present application. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present application. Here, it is not necessary and impossible to enumerate all the embodiments. Any modification, equivalent substitution and improvement made within the spirit and principle of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. A drainage device, characterised in that, The utility model relates to a water drainage valve (100) and a switch structure (200) thereof, and the switch structure (200) is connected with the water drainage valve (100) and is used for controlling the opening and closing of the water drainage valve (100). The switch structure (200) comprises a shell (210), a rotating disc (220) and a seal assembly (230), the shell (210) is sealingly connected with the water drainage valve (100), the rotating disc (220) is arranged in the shell (210) and is drivingly connected with the seal assembly (230), the seal assembly (230) is arranged on the side of the water passage (1122) away from the filter assembly (120), the rotating disc (220) has a first angle at which the seal assembly (230) is driven to extend out of the shell (210) and close the water passage (1122) and a second angle at which the seal assembly (230) is driven to retract into the shell (210) and be away from the water passage (1122). The rotating disc (220) is provided with a magnet (221) on the edge thereof, and two inductors (310) are arranged in the shell (210) and are capable of respectively sensing the magnet (221) on the rotating disc (220) at the first angle and the magnet (221) on the rotating disc (220) at the second angle. A driving plate (240) is arranged between the rotating disc (220) and the seal assembly (230), the driving plate (240) is slidingly arranged in the shell (210), one end of the driving plate (240) is connected with the seal assembly (230), the other end of the driving plate (240) is provided with a strip-shaped hole (241), the rotating disc (220) is provided with an eccentric shaft (222), the eccentric shaft (222) and the magnet (221) are respectively located on the two sides of the center of the rotating disc (220) along the radial direction of the rotating disc (220), and the eccentric shaft (222) penetrates through the strip-shaped hole (241).

2. The water drainage device according to claim 1, characterized in that The seal assembly (230) comprises a pull rod (231), a spring (232) and a corrugated sleeve (233), the shell (210) is provided with a guide hole (211), the pull rod (231) penetrates through the guide hole (211) and is connected with the driving plate (240), the corrugated sleeve (233) is arranged in the valve body (110) and is located between the shell (210) and the water passage (1122), the pull rod (231) penetrates into the corrugated sleeve (233) and is connected with the end of the corrugated sleeve (233) facing the water passage (1122), and the spring (232) is located between the corrugated sleeve (233) and the pull rod (231) and abuts against the inner wall of the end of the corrugated sleeve (233) facing the water passage (1122).

3. The water drainage device of claim 2, wherein, ​ 4. The water drainage device of claim 3, wherein, One of the inner wall of the guide hole (211) and the outer wall of the pull rod (231) is provided with a first guide block (2111), and the other is provided with a first guide groove (2311) matched with the first guide block (2111).

5. The water drainage device of claim 3, wherein, The valve body (110) is provided with an annular pressing portion (113) inside, which protrudes from the water passage (1122) to one side of the corrugated sleeve (233) and is arranged around the water passage (1122).

6. The water drainage device according to any one of claims 1-5, characterized in that, The filter assembly (120) comprises a filter cartridge (121) and a knob (122), the filter cartridge (121) is rotationally connected with the knob (122), the filter cartridge (121) is clamped between the water passage (1122) and the water inlet (111), and the knob (122) is threadedly connected with the valve body (110).

7. The water drainage device of claim 6, wherein, The filter assembly (120) further comprises a sealing ring (123), the top end of the filter cartridge (121) is provided with a flange portion (1212), the valve body (110) is provided with a stepped hole for accommodating the flange portion (1212), and the sealing ring (123) is abutted between the flange portion (1212) and the bottom wall of the stepped hole.

8. The water drainage device according to any one of claims 1-5, characterized in that, The shell (210) comprises a mounting seat (212) and a cover (213), the mounting seat (212) and the cover (213) are detachably connected, the rotating disc (220), the sealing assembly (230) and the induction circuit (300) are all mounted on the mounting seat (212), one side of the mounting seat (212) is provided with a buckle groove (2121), one side of the valve body (110) is provided with a screw buckle (1123), and the screw buckle (1123) can be screwed into the buckle groove (2121).

9. The water drainage device of claim 8, wherein, The cover (213) is provided with a lock block (2131), which can be inserted into the buckle groove (2121) to lock the screw buckle (1123).

10. The water drainage device of claim 8, wherein, One side of the cover (213) towards the mounting seat (212) is provided with a clamping groove (2132), one end of the induction circuit (300) is fixed between the cover (213) and the mounting seat (212), and the other end is clamped and matched with the clamping groove (2132).

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