CN214695923U - Water drainage device - Google Patents

Abstract

The utility model discloses a drainage device locates in the water tank, include: the base is provided with a water outlet and is fixed at a mounting hole arranged on the bottom wall of the water tank; the fixing frame is fixedly connected with the base; the hollow tank body can be arranged on the fixing frame in a vertically sliding mode to open or close the water outlet, when the tank body is located at a position for closing the water outlet, a control cavity is formed between the tank body and the base, the control cavity is provided with a through hole, and the control cavity is communicated with an inner cavity of the water tank through the through hole; the starting mechanism is used for controlling the opening and closing of the through-flow hole; when the starting mechanism opens the through-flow hole, water in the water tank enters the control cavity, so that upward water pressure on the tank body is formed in the control cavity, and the resultant force direction on the tank body is upward. The utility model discloses a drainage device can reduce the power value of opening the outlet greatly, simple structure, function are reliable.

Description

Water drainage device

Technical Field

The utility model relates to a locate drainage device in water tank's technical field.

Background

The prior water discharge device in the water tank of the toilet usually adopts a sealing disc to close a water discharge port, and when the water discharge device discharges water, an actuating switch of the water discharge device lifts the sealing disc through a transmission assembly to open the water discharge port for water discharge. Because the area of the sealing disc subjected to the action of water pressure is large, a large lifting force is required for lifting the sealing disc, and the transmission stroke of the transmission assembly needs to be large enough to enable the upward moving stroke of the sealing disc to be large enough to be far away from the water outlet sufficiently to realize water tank drainage. When the starting switch adopts an electric control switch, the sealing disc can be lifted only by needing larger motor power, so that the power consumption is higher, and batteries need to be replaced frequently; when the start switch employs a mechanical key, the pressing force needs to be large.

In addition, there is also a technology of a drainage device driven by water pressure, which controls water inflow through an electromagnetic valve so as to drive a sealing disc to open a drainage port by using the water pressure, but the mode of using the water pressure has a high requirement on the pressure of tap water, and if the water pressure is low, the smoothness of drainage cannot be ensured, and the mode has a high requirement on the water pressure although power is saved, and is not beneficial to the popularization of products.

SUMMERY OF THE UTILITY MODEL

The utility model provides a drainage device, which can greatly reduce the force value for opening the water outlet and has simple structure and reliable function.

In order to achieve the purpose, the utility model provides the following technical scheme:

a drain disposed in a tank, comprising:

the base is provided with a water outlet and is fixed at a mounting hole arranged on the bottom wall of the water tank;

the fixing frame is fixedly connected with the base;

the hollow tank body can be arranged on the fixing frame in a vertically sliding mode to open or close the water outlet, when the tank body is located at a position for closing the water outlet, a control cavity is formed between the tank body and the base, a through hole is formed in the control cavity, and the control cavity is communicated with an inner cavity of the water tank through the through hole;

the starting mechanism is used for controlling the opening and closing of the through hole; when the starting mechanism opens the through-flow hole, water in the water tank enters the control cavity, so that upward water pressure to the tank body is formed in the control cavity, and the resultant force direction on the tank body is upward.

According to the utility model discloses a drainage device, when being located the position of closing the outlet through making jar body, form a control chamber between jar body and the base, be equipped with the through-flow hole on the control chamber to set up actuating mechanism and carry out switching control to this through-flow hole, when the through-flow hole is opened, thereby water among the water tank gets into the control chamber and makes jar body the resultant force that receives upwards and shift up and open the outlet, promptly, the utility model discloses a leading type's opening mode opens the outlet, as long as open little through-flow hole back with very little power, can open big outlet automatically, thereby reduced actuating mechanism's drive power value greatly, simple structure, function are reliable.

In some optional or preferred embodiments, the upper surface of the base is provided with a water stop protruding edge extending in the circumferential direction, the water stop protruding edge and the upper edge of the water outlet are arranged at intervals in the radial direction of the water outlet, an annular water blocking portion in sealing and abutting fit with the water stop protruding edge is connected to the outer wall of the bottom end of the tank body, the annular water blocking portion, a portion of the upper surface of the base, which is located between the water stop protruding edge and the upper edge of the water outlet, and the water stop protruding edge enclose a closed control cavity, and the projection area of the annular water blocking portion in the up-down direction is smaller than the projection area of the control cavity in the up-down direction. The control cavity is enclosed by the annular water retaining part, the upper surface of the base and the water stop convex edge, and the water stop device is simple in structure and ingenious in design.

In some optional or preferred embodiments, the annular water retaining part comprises an upper water retaining part extending along the radial direction of the tank body and a lower water retaining part extending downwards from the bottom surface of the upper water retaining part, the upper water retaining part is in sealing abutting fit with the water stopping convex edge, the lower water retaining part is inserted into the water outlet and attached to the inner wall of the water outlet, and the through-flow hole is formed in the upper water retaining part. Through setting up the protruding edge of retaining portion and stagnant water and cooperateing, set up retaining portion and the inner wall of outlet and laminate mutually down to enclose into control chamber, simple structure.

In some optional or preferred embodiments, the actuating mechanism comprises an actuating switch and a transmission assembly, the transmission assembly comprises a transmission rod, a blocking piece and a floating barrel, the blocking piece is arranged at the bottom end of the transmission rod and is matched with the through hole to open and close the through hole, and the floating barrel is arranged on the transmission rod.

In some optional or preferred embodiments, the floating barrel is height-adjustably arranged on the transmission rod, the transmission rod is a screw rod, and the floating barrel is provided with a thread matched with the screw rod. Through making the keg float height-adjustable to control keg float whereabouts opportunity, the keg float whereabouts will drive the transfer line whereabouts, and the transfer line further drives the shutoff piece and supports and press the jar body, thereby the whereabouts opportunity of the control jar body realizes the regulation to displacement.

In some optional or preferred embodiments, the top end of the floating barrel is provided with an opening, the bottom wall of the floating barrel is provided with a first through hole, and the transmission rod is arranged in the top end opening of the floating barrel and the first through hole in a penetrating manner; the bottom of the floating barrel is also provided with a first water through hole for communicating the inner cavity of the floating barrel with the inner cavity of the water tank, and/or a first overflowing gap is formed between the transmission rod and the inner wall of the first through hole. Through setting up first water hole and/or the first clearance of overflowing for in water in the water tank can get into the keg float via first water hole and/or the first clearance of overflowing, at water tank drainage in-process, when the water level whereabouts to the keg float below, the water in the keg float can not flow out completely from first water hole and/or the first clearance of overflowing at once, thereby make the keg float can fall back reliably under the action of gravity of the water in the keg float.

In some optional or preferred embodiments, the blocking piece comprises a hollow blocking barrel and a sealing gasket arranged at the bottom end of the blocking barrel, a second water through hole for communicating an inner cavity of the blocking piece with an inner cavity of the water tank is formed in the bottom of the blocking barrel, and the sealing gasket is matched with the water through hole. Through setting up the second and crossing the water hole, when the water level whereabouts to a shutoff section of thick bamboo below, the water in the shutoff section of thick bamboo can not flow completely from the second at once to make a shutoff section of thick bamboo can fall back reliably and sealed through-flow hole under the action of gravity of the water in a shutoff section of thick bamboo.

In some alternative or preferred embodiments, the outer wall of the tank body is provided with a groove extending along the axial direction, and the transmission rod is positioned in the groove and moves up and down along the groove. The transmission rod can slide up and down in the groove, so that the transmission rod can move more smoothly and reliably.

In some optional or preferred embodiments, the through-flow holes are provided with two groups and symmetrically arranged on the tank body, correspondingly, the transmission assemblies are provided with two groups, the starting switches are respectively in transmission fit with the two groups of transmission assemblies, and the tank body is symmetrically provided with two grooves. Through setting up two through-flow holes and two sets of drive assembly, can be so that drive assembly's motion is more balanced, smooth and easy.

In some optional or preferred embodiments, the activation mechanism comprises an activation switch and a transmission assembly, the activation switch controls the opening and closing of the through-flow hole through the transmission assembly, and the activation switch comprises an electric control switch and/or a mechanical switch.

In some optional or preferred embodiments, the electrically controlled switch includes an inductor and an electromagnet electrically connected, the electromagnet is disposed on the top of the fixing frame, and an electromagnetic iron core of the electromagnet is in transmission fit with the transmission assembly. The electromagnet is adopted, so that the power consumption is very small, and the electric energy of a power supply can be greatly saved.

In some optional or preferred embodiments, the start switch includes a button seat, the sensor is disposed in the button seat, the mechanical switch is a button, and the button is movably disposed on the button seat and is in transmission fit with the transmission assembly.

In some optional or preferred embodiments, the fixing frame includes a guide rod arranged in a longitudinal direction, the tank body is sleeved outside the fixing frame and slides up and down along the guide rod, and the fixing frame is provided with a limiting part for limiting an upper limit position of the tank body moving up.

In some optional or preferred embodiments, the tank has a top opening and a bottom wall, the bottom wall of the tank is provided with a second through hole for the guide rod to pass through, the bottom wall of the tank is further provided with a third water through hole, and/or a second flow through gap is formed between the guide rod and the inner wall of the second through hole. Through setting up the third hole of crossing and/or be formed with the second between the guide arm with the fenestrate inner wall of second and overflow the clearance for when the drainage, water in the water tank can flow through the third hole of crossing and/or this second and overflow the clearance and get into jar body, thereby makes jar body can fall back under the action of gravity of the water that gets into jar body. The time for the tank body to fall back can be controlled by changing the size of the third water passing hole and/or the second overflowing gap. In addition, the third water passing hole and/or the second overflowing gap can be used as an overflow channel, when the water in the water tank is full of the top end of the tank body, the water flows into the tank body and flows to the water outlet from the third water passing hole and/or the second overflowing gap, and therefore the water level of the water tank is prevented from rising continuously and overflowing from the edge of the water tank.

Drawings

In order that the advantages of the invention will be readily understood, a more particular description of the invention briefly described above will be rendered by reference to specific embodiments that are illustrated in the appended drawings. Understanding that these drawings depict only typical embodiments of the invention and are not therefore to be considered to be limiting of its scope, the invention will be described and explained with additional specificity and detail through the use of the accompanying drawings. In the drawings:

fig. 1 is a sectional view of a drain device according to a preferred embodiment of the present invention installed in a water tank;

fig. 2 is an exploded view of a drainage device according to a preferred embodiment of the present invention;

fig. 3 is a schematic view illustrating an initial state of a drainage apparatus according to a preferred embodiment of the present invention;

fig. 4 is a schematic view of the drain device according to a preferred embodiment of the present invention when the through-hole is just opened in the electrically controlled open state;

fig. 5 is a schematic view of the drain opening in an electrically controlled open state of the drain device according to a preferred embodiment of the present invention;

fig. 6 is a schematic view of a drain device according to a preferred embodiment of the present invention in a manually opened state, when a through-flow hole is just opened;

fig. 7 is a schematic view illustrating a drain opening opened in a manually opened state of the drain device according to a preferred embodiment of the present invention;

fig. 8 is one of perspective views of a tank of a drain device according to a preferred embodiment of the present invention;

fig. 9 is a second perspective view of a tank of a drain device according to a preferred embodiment of the present invention;

fig. 10 is a third perspective view of a tank of a drain device according to a preferred embodiment of the present invention;

fig. 11 is a perspective view of a base of a drain device according to a preferred embodiment of the present invention;

fig. 12 is a cross-sectional view of a tank of a drain according to a preferred embodiment of the present invention under a downward hydraulic force;

fig. 13 is a cross-sectional view of the upward hydraulic force applied to the tank of the drain device according to a preferred embodiment of the present invention;

fig. 14 is one of perspective views of a closure of a drain according to a preferred embodiment of the present invention;

fig. 15 is a second perspective view of a closure of a drain according to a preferred embodiment of the present invention;

fig. 16 is one of perspective views of a float bowl of a drainage apparatus according to a preferred embodiment of the present invention;

fig. 17 is a second perspective view of the float bowl of the drainage device according to a preferred embodiment of the present invention.

The reference signs are:

1-a water tank; 101-mounting holes;

10-a base; 11-a water outlet; 12-water stop convex edge; 13-connecting ribs; 131-a jack; 14-the portion of the upper surface of the base located between the water stop ledge 12 and the upper edge of the drain opening 11;

20-a fixing frame; 21-a guide rod; 22-a limiting part;

30-tank body; 31-an annular water retaining part; 311-upper water retaining part; 312-a lower water retaining part; 32-grooves; 33-second perforation; 34-a third water through hole; 35-a guide sleeve;

40-a control chamber; 41-through flow holes;

50-a starting mechanism; 51-start switch; 511-an electrically controlled switch; 5111-inductor; 5112-an electromagnet; 5113-a wire; 512-mechanical switch; 513-a button seat; 52-a transmission assembly; 521-a transmission rod; 522-plugging piece; 5221-a closure cartridge; 5222-a gasket; 5223-second water passing holes; 523-floating barrel; 5231-first perforation; 5232-first water passing hole; 53-a cross-bar; 54-lifting the rod;

61-screw; 62-nut block;

70-a battery box;

the arrows in fig. 4 to 7 indicate the water flow direction.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention clearer and more obvious, the following description of the present invention with reference to the accompanying drawings and embodiments is provided for further details. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

In the following discussion, details are given to provide a more thorough understanding of the present invention. One skilled in the relevant art will recognize, however, that the invention may be practiced without one or more of the specific details. In certain instances, some features that are known in the art have not been described in detail in order to avoid obscuring the present invention. It is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", and the like are used herein for purposes of illustration only and are not to be construed as limiting.

Referring to fig. 1 to 17, a drainage device according to a preferred embodiment of the present invention is disposed in a water tank 1, and includes a base 10, a fixing frame 20, a tank 30, a control chamber 40, and an actuating mechanism 50.

The base 10 is provided with a water outlet 11, and the base 10 is fixed on a mounting hole 101 formed on the bottom wall of the water tank 1. In this embodiment, 3 screws 61 and 3 nut blocks 62 are used to cooperate to fix the base 10 at the mounting hole 101 of the water tank 1. Of course, the base 10 can be fixed in the mounting hole 101 by a conventional mounting method, which is not described herein.

The fixing frame 20 is fixedly connected with the base 10, specifically, a connecting rib 13 is arranged in the water outlet 11 of the base 10, a jack 131 is arranged in the middle of the connecting rib 13, and the bottom end of the fixing frame 20 is fixedly inserted in the jack 131.

The can 30 is hollow and can be slidably mounted on the fixing frame 20 to open or close the water outlet 11, as shown in fig. 3, when the can 30 is located at a position for closing the water outlet 11, a control chamber 40 is formed between the can 30 and the base 10, a through hole 41 is formed in the control chamber 40, and the control chamber 40 is communicated with the inner cavity of the water tank 1 through the through hole 41.

The actuating mechanism 50 is used for controlling the opening and closing of the through-flow hole 41; when the activating mechanism 50 opens the through-flow hole 41, water in the water tank 1 enters the control chamber 40, so that a water pressure upward against the tank 30 is formed in the control chamber 40 to make the tank 30 receive a resultant force in an upward direction.

When being located the position of closing outlet 11 through making jar body 30, form a control chamber 40 between jar body 30 and the base 10, be equipped with through-flow hole 41 on the control chamber 40 to set up actuating mechanism 50 and carry out switching control to this through-flow hole 41, when through-flow hole 41 was opened, thereby the water among the water tank 1 gets into control chamber 40 and makes jar body 30 receive resultant force upwards and shift up and open outlet 11, promptly, the utility model discloses a leading formula's opening mode opens outlet 11, as long as open little through-flow hole 41 back with very little power, can open big outlet 11 automatically, thereby reduced actuating mechanism 50's drive power value greatly, simple structure, reliable function.

Referring to fig. 11, in the present embodiment, the upper surface of the base 10 is provided with a water stop protruding edge 12 extending in the circumferential direction, and the water stop protruding edge 12 and the upper edge of the water discharge opening 11 are spaced apart in the radial direction of the water discharge opening 11. Referring to fig. 3 and 11, an annular water retaining portion 31 in sealing abutting fit with the water stopping protruding edge 12 is connected to an outer wall of the bottom end of the tank 30, the annular water retaining portion 31, a portion 14 of the upper surface of the base 10 between the water stopping protruding edge 12 and the upper edge of the water discharge opening 11, and the water stopping protruding edge 12 enclose a closed control cavity 40, where the closed control cavity 40 may be a completely sealed cavity or an incompletely sealed cavity with a certain flow gap, in this embodiment, the latter is adopted, specifically, a certain gap is allowed between the lower water retaining portion 312 and the inner wall of the water discharge opening 11, so as to form the incompletely sealed control cavity 40. In order to make the water in the water tank 1 enter the control chamber 40, the upward water pressure on the tank 30 is formed in the control chamber 40 so that the resultant force direction applied to the tank 30 is upward, the projected area S1 of the annular water blocking part 31 in the up-down direction is smaller than the projected area S2 of the control chamber 40 in the up-down direction, wherein the projected area S1 is the area of the section a of the tank 30 shown in fig. 12 subjected to the downward water pressure acting force, the projected area S2 is the area of the section B of the tank 30 shown in fig. 13 subjected to the upward water pressure acting force, the outer edge of the section a is the water stop flange 12, the inner edge of the section a is the outer wall of the tank 30, the outer edge of the section B is the water stop flange 12, and the inner edge of the section B is the inner wall of the water discharge opening 11.

Specifically, referring to fig. 3 and 8 to 10, the annular water retaining portion 31 includes an upper water retaining portion 311 extending in the radial direction of the tank 30 and a lower water retaining portion 312 extending downward from the bottom surface of the upper water retaining portion 311, the upper water retaining portion 311 is in sealing abutting engagement with the water stop protruding edge 12, the lower water retaining portion 312 is inserted into the water discharge opening 11 and is in contact with the inner wall of the water discharge opening 11 (the contact may be sealing contact or contact with a certain gap), and the through-flow hole 41 is opened in the upper water retaining portion 311. The upper water retaining part 311 is matched with the water stopping convex edge 12, and the lower water retaining part 312 is attached to the inner wall of the water outlet 11, so that the control cavity 40 is formed in an enclosing mode, and the structure is simple.

Referring to fig. 2 and 3, in the present embodiment, the actuating mechanism 50 includes an actuating switch 51 and a driving assembly 52, the driving assembly 52 includes a driving rod 521, a blocking member 522 and a float bowl 523, the blocking member 522 is disposed at a bottom end of the driving rod 521 and cooperates with the through-hole 41 to open and close the through-hole 41, and the float bowl 523 is disposed on the driving rod 521. Preferably, the float barrel 523 is disposed on the transmission rod 521 in a height adjustable manner, specifically, the transmission rod 521 is a screw rod, and the float barrel 523 is provided with a thread matched with the screw rod, so that the position of the float barrel 523 on the transmission rod 521 can be adjusted by rotating the transmission rod 521. Through making the keg float 523 height-adjustable to steerable keg float 523 whereabouts opportunity, keg float 523 whereabouts will drive transfer line 521 whereabouts, and transfer line 521 further drives shutoff piece 522 and supports and presses jar body 30 whereabouts, thereby control the whereabouts opportunity of jar body 30, realizes the regulation to displacement.

In this embodiment, referring to fig. 16 and 17, an opening is disposed at the top end of the float bucket 523, a first through hole 5231 is disposed on the bottom wall of the float bucket 523, and the transmission rod 521 is inserted into the opening at the top end of the float bucket 523 and the first through hole 5231; the bottom of the floating barrel 523 is further provided with a first water through hole 5232 communicating the inner cavity of the floating barrel 523 and the inner cavity of the water tank 1. Of course, in other embodiments, the first water through hole 5232 may not be provided, and the first water through hole 5232 may be replaced by a first flow gap (not shown) formed between the transmission rod 521 and the inner wall of the first through hole 5231, and the first water through hole 5232 and the first flow gap function the same. Alternatively, in other embodiments, the first water passing hole 5232 and the first flow passing gap may be provided at the same time. By providing the first water passing hole 5232 and/or the first overflowing gap, water in the water tank 1 can enter the floating bucket 523 through the first water passing hole 5232 and/or the first overflowing gap, and when the water level falls below the floating bucket 523 during the water discharging process of the water tank 1, the water in the floating bucket 523 cannot completely flow out of the first water passing hole 5232 and/or the first overflowing gap at once, so that the floating bucket 523 can reliably fall back under the gravity of the water in the floating bucket 523.

In this embodiment, the plugging member 522 includes a hollow plugging cylinder 5221 and a sealing gasket 5222 disposed at the bottom end of the plugging cylinder 5221. Referring to fig. 14 and 15, the bottom of the blocking cylinder 5221 is provided with a second water passing hole 5223 communicating the inner cavity of the blocking member 522 with the inner cavity of the water tank 1, and the sealing gasket 5222 is fitted with the through-flow hole 41. By providing the second water passage holes 5223, when the water level falls below the blocking barrel 5221, the water in the blocking barrel 5221 does not immediately flow out completely from the second water passage holes 5223, so that the blocking barrel 5221 can reliably fall back and seal the through-flow holes 41 under the gravity of the water in the blocking barrel 5221.

In this embodiment, referring to fig. 3, 8 and 10, a groove 32 extends axially on the outer wall of the can 30, and the transmission rod 521 is located in the groove 32 and moves up and down along the groove 32. By enabling the transmission rod 521 to slide up and down in the groove 32, the transmission rod 521 can move more smoothly and reliably.

Referring to fig. 2 and 3, in order to make the movement of the transmission assembly 52 more balanced and smooth, it is more preferable that the through-holes 41 are provided with two and symmetrically arranged on the tank 30, correspondingly, the transmission assemblies 52 are provided with two sets, the start switches 51 are respectively in transmission fit with the transmission assemblies 52 of the two sets, and the tank 30 is symmetrically provided with two grooves 32. Specifically, the transmission mechanism 50 further includes a cross bar 53, the start switch 51 is simultaneously linked with the two sets of transmission assemblies 52 through the cross bar 53, and the top ends of the transmission rods 521 of the two sets of transmission assemblies 52 are respectively rotatably connected with two ends of the cross bar 53.

In this embodiment, the activation mechanism 50 includes an activation switch 51 and a transmission assembly 52, the activation switch 51 controls the opening and closing of the through hole 41 through the transmission assembly 52, and the activation switch 51 includes an electrical control switch 511 and a mechanical switch 512. In other embodiments, only an electrically controlled switch or only a mechanical switch may be provided.

Specifically, the electronic control switch 511 includes an inductor 5111 and an electromagnet 5112 which are electrically connected, the inductor 5111 and the electromagnet 5112 are electrically connected through a wire 5113, the electronic control switch 511 is powered by a battery box 70, and the battery box 70 can be fixedly disposed on the water tank cover of the water tank 1. The electromagnet 5112 is disposed on the top of the fixing frame 20, and the electromagnet core of the electromagnet 5112 is in transmission fit with the transmission assembly 52 through the cross bar 53. The electromagnet 5112 can reduce the power consumption and greatly save the electric energy of the power supply.

In this embodiment, the start switch 51 includes a button seat 513, the sensor 5111 is disposed in the button seat 513, the mechanical switch 512 is a button, and the button is movably disposed on the button seat 513 and is in transmission fit with the transmission assembly 52. Specifically, the starting mechanism 50 further includes a lifting rod 54, one end of the lifting rod 54 is engaged with the button, the other end of the lifting rod 54 is connected to the cross bar 53, and when the button is pressed, the lifting rod 54 rotates and drives the cross bar 53 to move upwards.

In this embodiment, the fixing frame 20 includes a guide rod 21 longitudinally disposed, a guide sleeve 35 is disposed in the tank 30, the tank 30 is sleeved outside the fixing frame 20 and slides up and down along the guide rod 21 through the guide sleeve 35, and a limiting portion 22 for limiting an upper limit position of the tank 30 moving up is disposed on the fixing frame 20. The limiting portion 22 is a protrusion disposed on the outer wall of the guide rod 21. When the can body 30 rises until the tip of the guide sleeve 35 abuts against the stopper 22, the can body reaches the upper limit position and cannot rise further. The guide sleeve 35 is formed by extending upward from the edge of the second through hole 33 described later.

In this embodiment, the tank 30 has an open top end and a bottom wall, the bottom wall of the tank 30 is provided with a second through hole 33 for the guide rod 21 to pass through, and the bottom wall of the tank 30 is further provided with a third water through hole 34. Of course, in other embodiments, the third water through hole 34 may not be provided, and the third water through hole 34 may be replaced by a second flow-through gap (not shown) formed between the guide rod 21 and the inner wall of the second through hole 33. Of course, the third water passing hole 34 and the second water passing gap may be selectively provided at the same time.

By providing the third water passing hole 34 and/or forming the second overflowing gap between the guide rod 21 and the inner wall of the second through hole 33, when water is drained, the water in the water tank 1 can enter the tank 30 through the third water passing hole 34 and/or the second overflowing gap, so that the tank 30 can fall back under the gravity of the water entering the tank 30. By changing the size of the third water through hole 34 and/or the second flow through gap, the falling time of the tank 30 can be controlled. In addition, the third water passing hole 34 and/or the second water passing gap may also be used as an overflow passage, when the water in the water tank 1 is filled to the top of the tank 30, the water flows into the tank 30 and flows from the third water passing hole 34 and/or the second water passing gap to the water outlet 11, so as to prevent the water level of the water tank 1 from rising and overflowing from the edge of the water tank 1.

It is following right the utility model discloses a working process and principle brief:

referring to fig. 3, at this time, the drainage device is in an initial state, the tank 30 is in a falling position to close the drainage port 11, the upper water retaining portion 311 of the annular water retaining portion 31 is in sealing abutting engagement with the water stopping protruding edge 12, and the lower water retaining portion 312 is inserted into the drainage port 11 and attached to the inner wall of the drainage port 11, so that the upper water retaining portion 311, the lower water retaining portion 312, the portion 14 of the upper surface of the base 10 between the water stopping protruding edge 12 and the upper edge of the drainage port 11, and the water stopping protruding edge 12 enclose the closed control chamber 40. The closure member 522 of the actuating mechanism 50 seals off the flow opening 41 of the control chamber 40, so that the control chamber 40 is isolated from the interior of the water reservoir 1, and no water pressure builds up in the control chamber 40.

Referring to fig. 4 and 5, in this case, in the electrically controlled open state of the drainage device, a human hand approaches or touches the sensor 5111 on the button seat 513 to trigger the sensor 5111, so that the sensor 5111 generates a sensing signal, and after the sensor 5111 generates the sensing signal, the electromagnetic core of the electromagnet 5112 jacks up the cross bar 53, and the cross bar 53 simultaneously drives the two transmission rods 521 to move upward, so that the blocking member 522 at the bottom of the transmission rod 521 opens the through-flow hole 41 (see fig. 4). After the through-flow hole 41 is opened, water in the water tank 1 flows into the control cavity 40, because the gap between the lower water retaining part 312 and the inner wall of the water discharge opening 11 is small, water in the control cavity 40 cannot flow away immediately, the water flow is gathered in the control cavity 40 to enable the control cavity 40 to form water pressure, because the projection area S1 of the annular water retaining part 31 in the up-down direction is smaller than the projection area S2 of the control cavity 40 in the up-down direction, the resultant force direction on the tank body 30 is enabled to be upward, the tank body 30 moves upward under the resultant force until the top end of the guide sleeve 35 abuts against the limiting part 22, and the water discharge opening 11 is opened to realize water tank water discharge (see fig. 5).

When the water level in the water tank 1 falls to the extent that the buoyancy of the float barrel 523 is not enough to keep the float barrel 523 in a floating state, the float barrel 523 falls and drives the transmission rod 521 and the blocking member 522 to fall, the blocking member 522 closes the through-flow hole 41 and drives the tank body 30 to fall together, so that the tank body 30 closes the water discharge port 11 again, and the water discharge process is finished. The falling time of the tank body 30 can be adjusted by adjusting the height of the float bath 523, thereby controlling the amount of water discharged.

Referring to fig. 6 and 7, in this case, in the manual opening state of the drainage device, a user presses the mechanical switch 512 (button) on the button seat 513, the button moves downward and presses one end of the lifting rod 54, the other end of the lifting rod 54 moves upward to drive the cross bar 53 to move upward, and the cross bar 53 simultaneously drives the two transmission rods 521 to move upward, so that the blocking piece 522 at the bottom of the transmission rod 521 opens the through-flow hole 41 (see fig. 6). After the through-flow hole 41 is opened, water in the water tank 1 flows into the control cavity 40, because the gap between the lower water retaining part 312 and the inner wall of the water discharge port 11 is small, water in the control cavity 40 cannot flow away immediately, the water flow is gathered in the control cavity 40 to enable the control cavity 40 to form water pressure, because the projection area S1 of the annular water retaining part 31 in the up-down direction is smaller than the projection area S2 of the control cavity 40 in the up-down direction, the resultant force direction applied to the tank body 30 is upward, the tank body 30 moves upward under the effect of the resultant force to the top end of the guide sleeve 35 to abut against the limiting part 22, and the water discharge port 11 is opened to realize water tank water discharge (see fig. 7).

Unless defined otherwise, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Terms such as "component" and the like, when used herein, can refer to either a single part or a combination of parts. Terms such as "mounted," "disposed," and the like, as used herein, may refer to one component as being directly attached to another component or one component as being attached to another component through intervening components. Features described herein in one embodiment may be applied to another embodiment, either alone or in combination with other features, unless the feature is otherwise inapplicable or otherwise stated in the other embodiment.

While the foregoing specification illustrates and describes the preferred embodiments of the present invention, it is to be understood that the invention is not limited to the forms disclosed herein, but is not intended to be exhaustive or to exclude other embodiments and may be used in various other combinations, modifications, and environments and is capable of changes within the scope of the invention as expressed in the above teachings or as determined by the person of ordinary skill in the relevant art. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.

Claims (14)

1. The utility model provides a drainage device locates in the water tank, its characterized in that includes:

the base is provided with a water outlet and is fixed at a mounting hole arranged on the bottom wall of the water tank;

the fixing frame is fixedly connected with the base;

the hollow tank body can be arranged on the fixing frame in a vertically sliding mode to open or close the water outlet, when the tank body is located at a position for closing the water outlet, a control cavity is formed between the tank body and the base, a through hole is formed in the control cavity, and the control cavity is communicated with an inner cavity of the water tank through the through hole;

the starting mechanism is used for controlling the opening and closing of the through hole; when the starting mechanism opens the through-flow hole, water in the water tank enters the control cavity, so that upward water pressure to the tank body is formed in the control cavity, and the resultant force direction on the tank body is upward.

2. The drainage device according to claim 1, wherein the upper surface of the base is provided with a water stop protruding edge extending circumferentially, the water stop protruding edge and the upper edge of the drainage outlet are arranged at intervals in the radial direction of the drainage outlet, an annular water blocking portion in sealing abutting fit with the water stop protruding edge is connected to the outer wall of the bottom end of the tank body, the annular water blocking portion, a portion of the upper surface of the base between the water stop protruding edge and the upper edge of the drainage outlet and the water stop protruding edge enclose a closed control chamber, and the projection area of the annular water blocking portion in the up-down direction is smaller than the projection area of the control chamber in the up-down direction.

3. The drainage apparatus according to claim 2, wherein the annular water retaining portion includes an upper water retaining portion extending in a radial direction of the tank body and a lower water retaining portion extending downward from a bottom surface of the upper water retaining portion, the upper water retaining portion is in sealing abutting engagement with the water stopping protrusion edge, the lower water retaining portion is inserted into the drain opening and is attached to an inner wall of the drain opening, and the through-flow hole is opened in the upper water retaining portion.

4. The drainage device of claim 1, wherein the activation mechanism comprises an activation switch and a transmission assembly, the transmission assembly comprises a transmission rod, a blocking piece and a floating barrel, the blocking piece is arranged at the bottom end of the transmission rod and is matched with the through hole to open and close the through hole, and the floating barrel is arranged on the transmission rod.

5. The drainage device according to claim 4, wherein the float is height-adjustable on the transmission rod, the transmission rod is a screw, and the float is provided with a thread matching with the screw.

6. The drainage device according to claim 5, wherein the top end of the float bowl is provided with an opening, the bottom wall of the float bowl is provided with a first through hole, and the transmission rod is arranged in the top end opening of the float bowl and the first through hole in a penetrating manner; the bottom of the floating barrel is also provided with a first water through hole for communicating the inner cavity of the floating barrel with the inner cavity of the water tank, and/or a first overflowing gap is formed between the transmission rod and the inner wall of the first through hole.

7. The drainage device according to claim 4, wherein the plugging member comprises a hollow plugging cylinder and a sealing gasket arranged at the bottom end of the plugging cylinder, the bottom of the plugging cylinder is provided with a second water through hole for communicating the inner cavity of the plugging member with the inner cavity of the water tank, and the sealing gasket is matched with the through hole.

8. The drain device according to claim 4, wherein the outer wall of the tank body is provided with a groove extending along the axial direction, and the transmission rod is positioned in the groove and moves up and down along the groove.

9. The drainage device according to claim 8, wherein the through-flow holes are provided with two and symmetrically arranged on the tank body, correspondingly, the transmission assemblies are provided with two groups, the starting switches are respectively in transmission fit with the transmission assemblies of the two groups, and the tank body is symmetrically provided with two grooves.

10. The drain device according to claim 1, wherein the activation mechanism comprises an activation switch and a transmission assembly, the activation switch controls the opening and closing of the through-flow hole through the transmission assembly, and the activation switch comprises an electrically controlled switch and/or a mechanical switch.

11. The water drainage device of claim 10, wherein the electric control switch comprises an inductor and an electromagnet which are electrically connected, the electromagnet is arranged at the top of the fixing frame, and an electromagnetic iron core of the electromagnet is in transmission fit with the transmission assembly.

12. The drain of claim 11, wherein the activation switch includes a button receptacle, the sensor is disposed in the button receptacle, and the mechanical switch is a button movably disposed on the button receptacle and drivingly engaged with the drive assembly.

13. The drainage device according to claim 1, wherein the fixing frame comprises a guide rod arranged longitudinally, the tank body is sleeved outside the fixing frame and slides up and down along the guide rod, and the fixing frame is provided with a limiting part for limiting the upper limit position of the tank body moving up.

14. The drain device according to claim 13, wherein the tank has an open top end and a bottom wall, the bottom wall of the tank is provided with a second through hole for the guide rod to pass through, the bottom wall of the tank is further provided with a third water through hole, and/or a second flow gap is formed between the guide rod and the inner wall of the second through hole.

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