CN216515957U

CN216515957U - Closestool drainage device

Info

Publication number: CN216515957U
Application number: CN202122725443.5U
Authority: CN
Inventors: 谢伟藩; 陈雪瑜
Original assignee: Guli Xiamen Technology Co Ltd
Current assignee: Guli Xiamen Technology Co Ltd
Priority date: 2021-11-09
Filing date: 2021-11-09
Publication date: 2022-05-13
Anticipated expiration: 2031-11-09

Abstract

The utility model discloses a toilet bowl drainage device, comprising: the closestool seat body is provided with a urinal and a jet orifice arranged at the bottom of the urinal; a toilet tank having a discharge port; the washing water channel is communicated upwards to a water outlet and downwards to a jet orifice, the water outlet is an inlet of the washing water channel, and the jet orifice is an outlet of the washing water channel; the water discharge control valve is arranged at the lower part of the flushing water channel and is provided with a valve port for communicating the water outlet with the jet orifice, and in an initial state, the water discharge control valve is in a state of closing the valve port so that water can be stored in a space between the valve port and the water outlet in the flushing water channel; and the starting piece controls the opening of the drainage control valve. By adopting the technical scheme of the utility model, the flushing performance of the closestool can be greatly improved, the starting force value of the drainage control valve can be smaller, the structure is simple, and the effect is reliable.

Description

Closestool drainage device

Technical Field

The utility model relates to a toilet drainage device.

Background

As the demand for cleaning capabilities of toilets has increased, those skilled in the art are constantly improving the flushing performance of toilets. Some prior art adopt and open the rivers velocity of flow of closestool sparge water when the outlet through the size that increases the closestool water tank outlet with the improvement drain valve and wash fast to improve closestool flushing performance, but this kind of mode, the valve block area that is used for closing the outlet on the drain valve is great, therefore the valve block receives the water pressure in the closestool water tank also great, can lead to opening the start-up power value of the interior drain valve of closestool water tank great, use experience not good. Some prior art still utilize the effect of atmospheric pressure to make and wash and to wash full water in the water course after finishing, avoid washing at every turn and to wash the air in the water course and lead to the fact the retardation to washing rivers and influence the flushing effect, this kind of mode is even can improve the flushing performance, but because it keeps washing the deposit of water in the water course by the effect of atmospheric pressure, consequently this deposit of water has decurrent pulling force to the valve block that is used for closing the outlet on the drain valve, when upwards drive opens the valve block of drain valve in the closestool water tank, not only will overcome the water in the closestool water tank and apply decurrent water pressure on the valve block but also will overcome and wash the deposit of water in the water course and to the decurrent pulling force of valve block, therefore the opening force value of drain valve still needs great, use experience is not good.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention is directed to a toilet drainage device, which not only can greatly improve the flushing performance of a toilet, but also can make the starting force value of a drainage control valve smaller, and has a simple structure and a reliable effect.

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

a toilet drain device comprising:

the closestool seat body is provided with a urinal and a jet orifice arranged at the bottom of the urinal;

a toilet tank having a discharge port;

the flushing water channel is communicated to the water outlet upwards and is communicated to the jet orifice downwards, the water outlet is an inlet of the flushing water channel, and the jet orifice is an outlet of the flushing water channel;

the water discharge control valve is arranged at the lower part of the flushing water channel and is provided with a valve port for communicating the water outlet with the jet orifice, and in an initial state, the water discharge control valve is in a state of closing the valve port so that water can be stored in a space between the valve port and the water outlet in the flushing water channel;

and the starting piece controls the opening of the drainage control valve.

According to the toilet drainage device of the utility model, the drainage control valve is arranged at the lower part of the flushing waterway, and the valve port of the drainage control valve is communicated with the inlet and the outlet of the flushing waterway, so that the drainage control valve is in a state of closing the valve port in the initial state of not flushing, and water can be stored in the space between the valve port and the drainage outlet in the flushing waterway. The stored water can not flow away from the valve port, so that the air between the valve port and the water outlet in the flushing water channel can be discharged, on one hand, the potential energy of the water in the toilet water tank can be directly transmitted to the lower part of the flushing water channel, and compared with a toilet drainage device without stored water in the flushing water channel in the prior art, the energy loss of water flow is greatly reduced, and the flushing performance of the toilet is effectively improved; on the other hand, because the utility model utilizes the drainage control valve to control the valve port to close so as to ensure that the flushing water channel can keep water storage, compared with the closestool drainage device which utilizes atmospheric pressure to keep water storage in the prior art, the starting force value of the drainage control valve is not influenced by the atmospheric pressure, the starting force value is smaller, and the use experience is better.

In an alternative or preferred embodiment, the toilet tank is in communication with the flush channel through the drain opening in an initial state. Like this, wash after the end, toilet tank moisturizing again, this moisturizing can flow to in washing the water course through the outlet with moisturizing again to washing the water course to need not to set up the extra passageway that is used for moisturizing to washing water course, the structure is simpler. Meanwhile, when the toilet is flushed, water in the toilet water tank can directly and quickly flow to the flushing water channel through the water outlet.

In an alternative or preferred embodiment, a water seal is formed at the bottom of the urinal, and the valve port and the jet port are both located below the water level of the water seal. Design like this makes the hydroenergy in the water seal can get into between valve port and the jet for the washing water course between valve port and the jet also fills water, and then makes whole washing water course fill water, and the effect is better.

In an alternative or preferred embodiment, the valve port is disposed proximate to the injection port. The valve port is close to the jet orifice, so that the potential energy of water in the toilet water tank can be more directly transmitted to the jet orifice, and the design of the valve port and the installation of the drainage control valve are facilitated.

In an alternative or preferred embodiment, a spray head with two through ends is arranged at the bottom of the urinal, the inner end of the spray head forms the spray opening, the outer end of the spray head forms the valve port or the outer end of the spray head is communicated with the valve port in a sealing way; the spray head and the toilet seat body are integrally formed, or the spray head is independently formed and fixedly arranged on the toilet seat body. Through setting up the shower nozzle for the one end of shower nozzle is the jet, and the other end cooperatees with drainage control valve, and simple structure realizes easily, makes drainage control valve's simple to operate.

In an alternative or preferred embodiment, the drain control valve is a mechanical valve, the mechanical valve further comprises a valve core matched with the valve port and a time delay mechanism for controlling the valve core to close the valve port in a time delay manner, and the actuating member drives the valve core. The drain control valve is opened for a predetermined period of time by providing a time delay mechanism to ensure sufficient drain time.

In an alternative or preferred embodiment, a spray head with two through ends is arranged at the bottom of the urinal, the inner end of the spray head forms the spray opening, the outer end of the spray head forms the valve port or the outer end of the spray head is communicated with the valve port in a sealing way; the water discharge control valve also comprises a valve body with an inner cavity, the valve body is provided with a valve inlet communicated with the inner cavity and a valve outlet communicated with the inner cavity, the valve inlet is communicated with the water discharge port through a communicating pipe, the valve outlet is communicated with the outer end of the spray head in a sealing way, the valve port is positioned in the inner cavity to communicate the valve inlet and the valve outlet, the inner cavity of the communicating pipe, the inner cavity of the valve body and the inner cavity of the spray head form the flushing water channel together, and the valve core and the time delay mechanism are arranged on the valve body. In the scheme, the spray head is arranged, so that one end of the spray head is a spray opening, the other end of the spray head is matched with the water discharge control valve, the structure is simple, the implementation is easy, and the installation of the water discharge control valve is convenient. And the time delay mechanism is arranged on the valve body of the water discharge control valve, so that the structure is simpler and more compact.

In an alternative or preferred embodiment, the delay mechanism comprises a delay channel, a delay cavity communicated with the flushing water channel and an elastic element for driving the valve core to reset so as to close the valve port, and when the valve core moves towards the direction of opening the valve port, the delay cavity is compressed, so that water in the delay cavity flows into the flushing water channel through the delay channel; when the valve core moves towards the direction of closing the valve port under the action of the elastic force of the elastic part, the water in the flushing water channel slowly flows into the delay cavity through the delay channel, so that the valve core can be smoothly reset to close the valve port. In the scheme, the delay mechanism is simple in structure and reliable in delay function.

In an optional or preferred embodiment, the delay channel is formed by an overflow orifice, and the overflow orifice is arranged on the wall of the delay cavity or on the valve core; or the delay channel is formed by an overflowing gap which is arranged between the cavity wall of the delay cavity and the valve core. In the scheme, the delay channel is simple in structure and easy to set.

In an alternative or preferred embodiment, the delay mechanism further comprises a check valve for controlling the magnitude of the flow cross-sectional area of the delay channel, and when the valve core moves towards the direction of opening the valve port, the check valve controls the delay channel to be opened greatly so that the water in the delay cavity flows into the flushing water channel through the delay channel quickly; when the valve core moves towards the direction of closing the valve port, the one-way valve controls the delay channel to be opened less, so that the water in the flushing water channel flows into the delay cavity slowly through the delay channel. In this scheme, make when driving the valve core through setting up the check valve, can open the valve port faster, more easily, use and experience better.

In an alternative or preferred embodiment, the check valve is disposed on the wall of the delay chamber or on the valve core or between the wall of the delay chamber and the valve core.

In an optional or preferred embodiment, the valve element includes a valve rod and a valve plate connected to one end of the valve rod, the valve plate is matched with the valve port, the other end of the valve rod penetrates out of the delay cavity, a piston part is arranged on the valve rod, the piston part is matched with the delay cavity to compress water in the delay cavity, a through hole is arranged on the piston part, the check valve is arranged in the through hole in a sliding manner, when the valve element moves in the direction of opening the valve port, the flow cross-sectional area of the delay channel formed between the check valve and the piston part is larger, and when the valve element moves in the direction of closing the valve port, the flow cross-sectional area of the delay channel formed between the check valve and the piston part is smaller. In the scheme, a delay channel is formed between the one-way valve and the piston part, the design is ingenious, the structure is simple, and the delay function is reliable.

In an optional or preferred embodiment, the check valve includes a valve post and a valve disc, the valve post is provided with a flow passage groove extending in an axial direction, the valve post is inserted into the through hole, the valve disc is matched with one end surface of the through hole, a gap between the valve disc and the one end surface of the through hole and the flow passage groove form the delay passage, when the valve core moves in a direction of opening the valve port, the check valve moves to the end surface of the valve disc far away from the through hole under the action of water pressure so that the flow passage sectional area of the delay passage is larger, and when the valve core moves in a direction of closing the valve port, the check valve moves to the end surface of the valve disc abutting against the through hole under the action of water pressure so that the flow passage sectional area of the delay passage is smaller. In the scheme, the one-way valve comprises a valve column and a valve disc, and the valve disc is far away from and abutted against one end face of the through hole, so that the size of the overflowing sectional area of the delay channel is controlled, and the structure is simple.

In an alternative or preferred embodiment, the drain control valve is an electrically controlled valve, the electrically controlled valve controls the valve port to be opened for a predetermined period of time and then to be closed, and the actuating member is electrically connected with the electrically controlled valve. In the scheme, the opening time of the valve port is directly controlled by the electric control valve, the structure is simple, and the control is reliable.

In an alternative or preferred embodiment, the actuator is located in a mounting hole provided in the front wall of the toilet seat.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and not to limit the utility model. In the drawings:

FIG. 1 is an exploded perspective view of a toilet drain assembly according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of a toilet drain assembly according to an embodiment of the present invention;

FIG. 3 is an exploded view of a drain control valve according to an embodiment of the present invention;

fig. 4 is a perspective view illustrating a first valve body of a drain control valve according to an embodiment of the present invention;

FIG. 5 is a perspective view of a check valve according to an embodiment of the present invention;

fig. 6 is one of assembled sectional views (a state where a valve core closes a valve port) of the drain control valve according to an embodiment of the present invention;

fig. 7 is a second assembled sectional view (a state where the valve body closes the valve port) of the drain control valve according to the embodiment of the present invention;

FIG. 8 is an enlarged view of a portion of FIG. 7 at A;

fig. 9 is one of assembled sectional views (a state in which the valve body completely opens the valve port) of the drain control valve according to an embodiment of the present invention;

fig. 10 is a second assembled sectional view of the drain control valve according to the embodiment of the present invention (the valve core is reset to a state in the process of moving in a direction of closing the valve port by the elastic member);

fig. 11 is a partial enlarged view of fig. 10 at B.

The reference signs are:

10-a toilet seat body; 11-a urinal; 111-an ejection port; 112-water seal; 12-a spray head; 13-mounting holes;

20-toilet cistern; 21-a water outlet;

30-a drain control valve; 31-a valve body; 311-lumen; 312-valve inlet; 313-valve outlet; 314-valve port; 315-first valve body; 316-a second valve body; 32-a valve core; 321-a valve stem; 322-valve plate; 323-piston portion; 3231-a through hole; 3232-bump; 33-a time delay mechanism; 331-delay path; 332-a delay volume; 333-elastic member; 334-one-way valve; 3341-valve column; 33411-overflow groove; 3342-valve disk; 335-a sealing gasket;

40-flushing the water channel; 41-communicating pipe;

50-an actuating member;

60-oscillating bars;

70-a corrugated gland;

and a clearance between the H-valve disc and one end face of the through hole.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

Referring to fig. 1 to 11, a toilet drainage apparatus according to an embodiment of the present invention includes:

a toilet seat body 10 having a bowl 11 and a jet port 111 provided at the bottom of the bowl 11;

a toilet tank 20 having a drain port 21;

the flushing water channel 40, the flushing water channel 40 is communicated with the water outlet 21 upwards and is communicated with the jet orifice 111 downwards, the water outlet 21 is an inlet of the flushing water channel 40, and the jet orifice 111 is an outlet of the flushing water channel 40;

a drain control valve 30 provided at a lower portion of the flushing waterway 40, the drain control valve 30 having a valve port 314 for communicating the drain port 21 with the injection port 111, the drain control valve 30 being in a state of closing the valve port 314 in an initial state so that water can be stored in a space between the valve port 314 and the drain port 21 in the flushing waterway 40;

and an actuating member 50 for controlling the opening of the drain control valve 30.

According to the toilet drainage apparatus of the present invention, by providing the drainage control valve 30 at the lower portion of the flushing waterway 40 and making the valve port 314 of the drainage control valve 30 communicate with the inlet and the outlet of the flushing waterway 40, the drainage control valve 30 is in a state of closing the valve port 314 in the initial state of not flushing, so that water can be stored in the space between the valve port 314 and the drainage port 21 in the flushing waterway 40. The stored water can not flow away from the valve port 314, so that the air between the valve port 314 and the water outlet 21 in the flushing water channel 40 can be discharged, on one hand, the potential energy of the water in the toilet water tank 20 can be directly transmitted to the lower part of the flushing water channel 40, and compared with a toilet drainage device without stored water in the flushing water channel 40 in the prior art, the energy loss of water flow is greatly reduced, and the flushing performance of the toilet is effectively improved; on the other hand, because the valve port 314 is controlled to be closed by the drainage control valve 30, so that the flushing water channel 40 can keep water storage, compared with the toilet drainage device which keeps water storage by using atmospheric pressure in the prior art, the starting force value for opening the drainage control valve 30 is not influenced by the atmospheric pressure, the downward pulling force generated by the water storage on the drainage control valve 30 is not required to be overcome, the starting force value is smaller, and the use experience is better.

Referring to fig. 1 and 2, in the present embodiment, the toilet seat 10 and the toilet tank 20 are integrally formed, and the toilet tank 20 is located on the top surface of the rear portion of the toilet seat 10, but the toilet seat 10 and the toilet tank 20 may also be separate structures.

Referring to fig. 2, in the present embodiment, the toilet tank 20 is initially in communication with the flush channel 40 through the drain port 21. Thus, after the flushing is finished, the inlet valve (not shown) of the toilet tank 20 refills the inner cavity of the toilet tank 20, and the refill water can flow into the flushing waterway 40 through the outlet 21 to refill the flushing waterway 40 at the same time, so that a channel for refilling the flushing waterway 40 does not need to be additionally provided, and the structure is simpler. Meanwhile, when flushing, the water in the toilet tank 20 can directly and rapidly flow to the flushing waterway 40 through the water discharge port 21.

With continued reference to fig. 2, in the present embodiment, a water seal 112 is formed at the bottom of the urinal 11, and the valve port 314 and the injection port 111 are both located below the water level of the water seal 112. The design enables water in the water seal 112 to enter between the valve port 314 and the jet orifice 111, so that the flushing water channel 40 between the valve port 314 and the jet orifice 111 is also filled with water, and further the whole flushing water channel 40 is filled with water, and the effect is better. Of course, in other embodiments, the position of the valve port 314 may be alternatively set above the water level of the water seal 112, which may cause a small air gap between the valve port 314 and the injection port 111, which is not as effective as the solution that the valve port 314 and the injection port 111 are both below the water level of the water seal 112.

With continued reference to FIG. 2, in the present embodiment, the valve port 314 is disposed proximate the injection port 111. The valve port 314 is close to the jet opening 111, so that the potential energy of the water in the toilet tank 20 can be more directly transmitted to the jet opening 111, and the design of the valve port 314 and the installation of the drain control valve 30 are convenient. Specifically, the bottom of the urinal 11 is provided with a nozzle 12 with two through ends, the inner end of the nozzle 12 forms the jet orifice 111, the outer end of the nozzle 12 is hermetically communicated with the valve port 314, specifically, the outer end of the nozzle 12 is sleeved in a valve outlet 313 described below, and the outer end of the nozzle 12 is hermetically connected with the valve outlet 313 through a corrugated sealing sleeve 70. The spray head 12 of the present embodiment is preferably integrally formed with the toilet seat 10, but the spray head 12 may be separately formed and then fixedly attached to the toilet seat 10. Through setting up shower nozzle 12 for the one end of shower nozzle 12 is injection 111, and the other end cooperatees with drainage control valve 30, and simple structure realizes easily, makes drainage control valve 30's simple to operate. In other embodiments, the outer end of the nozzle head 12 may be used directly as the valve port 314 of the drain control valve 30.

Referring to fig. 3 to 11, in the present embodiment, the drain control valve 30 is a mechanical valve, the mechanical valve further includes a valve core 32 engaged with the valve port 314, and a delay mechanism 33 for controlling the valve core 32 to delay closing of the valve port 314, and the actuator 50 drives the valve core 32. The drain control valve 30 is opened for a predetermined period of time by providing a delay mechanism 33 to ensure a sufficient drain time.

Specifically, the actuating member 50 is a button, a mounting hole 13 is formed on the front wall of the toilet seat 10, and the actuating member 50 is mounted in the mounting hole 13. Of course, the actuating member 50 may be a handle or knob or slider, etc. The actuating member 50 drives the valve element 32 via a transmission assembly comprising a rocker 60, one end of the rocker 60 cooperating with the actuating member 50 and the other end pivotally cooperating with an end of the valve element 32 projecting out of the valve body 31 as described below.

In this embodiment, the drain control valve 30 further includes a valve body 31 having an inner cavity 311, the valve body 31 is provided with a valve inlet 312 communicated with the inner cavity and a valve outlet 313 communicated with the inner cavity, the valve inlet 312 is communicated with the drain opening 21 through a communicating pipe 41, and the valve outlet 313 is hermetically communicated with the outer end of the nozzle 12, that is, the drain control valve 30 is communicated into the flushing water channel 40 through the valve inlet 312 and the valve outlet 313. The valve port 314 is located in the inner cavity 311 to communicate with the valve inlet 312 and the valve outlet 131, and the inner cavity of the communication pipe 41, the inner cavity of the valve body 31 and the inner cavity of the spray head 12 together form the flushing water channel 40. The valve body 31 is provided with a valve element 32 and a delay mechanism 33. The time delay mechanism 33 is arranged on the valve body 31 of the drain control valve 30, so that the structure is simpler and more compact. In addition, the communication pipe 41 is independently formed with respect to the toilet seat body 10, so that the assembly between the drain control valve 30 and the communication pipe 41 is facilitated. Of course, in other embodiments, the communication tube 41 may be integrally formed with the toilet seat 10. In this embodiment, the valve body 31 includes a first valve body 315 and a second valve body 316, and the first valve body 315 and the second valve body 316 are covered and fixed to enclose the inner cavity 311.

Specifically, in the present embodiment, the delay mechanism 33 includes a delay path 331, a delay chamber 332 communicated with the flushing water channel 40, and an elastic member 333 for resetting the valve plug 32 to close the valve port 314, and when the valve plug 32 moves toward the direction of opening the valve port 314, the delay chamber 332 is compressed, so that the water in the delay chamber 332 flows into the flushing water channel 40 through the delay path 331; when the valve core 32 moves towards the direction of closing the valve port 314 under the elastic force of the elastic member 333, the water in the flushing waterway 40 slowly flows into the delay cavity 332 through the delay passage 331, so that the valve core 32 can be smoothly reset to close the valve port 314. The delay mechanism 33 has a simple structure and a reliable delay function. The elastic member 333 is embodied by a compression spring.

In order to open the valve port 314 more quickly and easily when the valve plug 32 is actuated, and the use experience is better, in this embodiment, the delay mechanism 33 further includes a one-way valve 334 for controlling the flow cross-sectional area of the delay channel 331 to be small, and when the valve plug 32 moves toward the direction of opening the valve port 314, the one-way valve 334 controls the delay channel 331 to be opened to be large, so that the water in the delay cavity 332 flows into the flushing water channel 40 through the delay channel 331 relatively quickly; when the valve core 32 moves towards the direction of closing the valve port 314, the one-way valve 334 controls the delay path 331 to be opened less, so that the water in the flushing channel 40 flows into the delay chamber 332 through the delay path 331 more slowly.

In this embodiment, the check valve 334 is provided on the valve element 32. Of course, in other embodiments, the check valve 334 may be disposed on the wall of the delay chamber 332 or between the wall of the delay chamber 332 and the valve element 32.

Referring to fig. 3, 6 to 11, in this embodiment, the valve core 32 includes a valve rod 321 and a valve plate 322 connected to one end of the valve rod 321, the valve plate 322 is in sealing fit with the valve port 314 through a gasket 335, the gasket 335 is mounted on the valve plate 322, the other end of the valve rod 321 penetrates through the delay cavity 332, a piston portion 323 is disposed on the valve rod 321, and the piston portion 323 is in fit with the delay cavity 332 to compress water in the delay cavity 332. The piston part 323 is provided with a through hole 3231, the check valve 334 is slidably arranged in the through hole 3231, when the valve core 32 moves towards the direction of opening the valve port 314, the flow cross-sectional area of the delay channel 331 formed between the check valve 334 and the piston part 323 is larger, and when the valve core 32 moves towards the direction of closing the valve port 314, the flow cross-sectional area of the delay channel 331 formed between the check valve 334 and the piston part 323 is smaller. The time delay channel 331 is formed between the one-way valve 334 and the piston part 323, and the time delay device is ingenious in design, simple in structure and reliable in time delay function.

More specifically, referring to fig. 5, 8 and 11, in the present embodiment, the check valve 334 includes a stem 3341 and a valve disc 3342, and the stem 3341 is provided with an axially extending flow passage 33411. The valve post 3341 is arranged in the through hole 3231 in a penetrating manner, the valve disc 3342 is matched with one end face of the through hole 3231, a delay channel 331 (shown in fig. 11) is formed by a gap H between the valve disc 3342 and the one end face of the through hole 3231 and the flow passage groove 33411, when the valve core 32 moves towards the direction of opening the valve port 314, the check valve 334 moves to the end face of the valve disc 3342 far away from the through hole 3231 under the action of water pressure, so that a gap H between the valve disc 3342 and the one end face of the through hole 3231 is larger (shown in fig. 8), and the flow passage cross-sectional area of the delay channel 331 is larger; when the valve core 32 moves towards the direction of closing the valve port 314, the check valve 334 moves under the action of water pressure until the valve disc 3342 abuts against one end face of the through hole 3231, so that a gap H between the valve disc 3342 and one end face of the through hole 3231 is smaller (as shown in fig. 11), and the flow cross-sectional area of the delay passage 331 is smaller, and at this time, the flow cross-sectional area of the gap H is smaller than that of the flow groove 33411. The check valve 334 comprises a valve column 3341 and a valve disc 3342, and the size of the flow cross section area of the delay passage 331 is controlled by the valve disc 3342 far away from and abutting against one end face of the through hole 3231, so that the structure is simple. In this embodiment, the bottom surface of the piston 323 is provided with a protrusion 3232, and the valve plate 3342 abuts against the protrusion 3232 so that a gap H is formed between the valve plate 3342 and one end surface of the through hole 3231.

The working process of this embodiment is briefly described as follows:

as shown in fig. 6 to 8, at this time, the valve body 32 of the drain control valve 30 keeps closing the valve port 314 under the action of the elastic member 333 and the action of water pressure, that is, the drain control valve 30 is in a closed state, so that the flushing waterway 40 has water stored in a space between the valve port 314 and the drain port 21, and since the valve port 314 and the jet port 111 are located below the water level of the water seal 112 of the toilet seat body 10, the flushing waterway 40 between the valve port 314 and the jet port 111 is also filled with water, that is, the entire flushing waterway 40 is filled with water in an initial state;

as shown in fig. 2 and 9, when the toilet seat 10 needs to be flushed, the actuating member 50 is pressed, the actuating member 50 drives the swing link 60 to swing, the swing link 60 further drives the valve core 32 to open the valve port 314, so that the water in the toilet tank 20 and the water in the flushing water channel 40 flow to the jet opening 111 to flush the bottom of the urinal 11. When the valve core 32 moves towards the direction of opening the valve port 314, the piston part 323 on the valve core 32 compresses the delay cavity 332, the check valve 334 moves to the end face of the valve disc 3342 far away from the through hole 3231 under the action of water pressure, so that the gap H between the valve disc 3342 and the end face of the through hole 3231 is larger, the flow cross section area of the delay channel 331 is larger, water in the delay cavity 332 can flow into the flushing water channel 40 through the delay channel 331 more quickly, and the valve core 32 can open the valve port 314 quickly;

as shown in fig. 10 and 11, after the actuating member 50 is released, the valve element 32 moves toward the direction of closing the valve port 314 under the elastic force of the elastic member 333, at this time, the check valve 334 moves to the end surface of the valve disc 3342 abutting against the through hole 3231 under the hydraulic action, so that the gap H between the valve disc 3342 and the end surface of the through hole 3231 is small, that is, the flow cross-sectional area of the delay passage 331 is small, so that the water in the flushing water channel 40 slowly flows into the delay cavity 332 through the delay passage 331, and the valve element 32 can delay to close the valve port 314, thereby ensuring a sufficient drainage time.

Finally, the toilet tank 20 refills water, which can flow into the flush channel 40 through the outlet 21, and the flush channel between the valve port 314 and the outlet 21 is filled with water because the valve port 314 is closed. Meanwhile, after the water discharge of the toilet seat 10 is finished, the water sealed by the water seal is replenished again, and the water sealed by the water seal can enter the flushing water channel through the jet orifice 111, so that the flushing water channel 40 between the valve port 314 and the jet orifice 111 is filled with water, and the whole flushing water channel 40 is filled with water in the initial state to prepare for the next flushing.

In other embodiments, the delay path 331 can also be directly formed by an overflow aperture, which is disposed on the wall of the delay chamber 332 or on the valve element 32; alternatively, in other embodiments, the delay path 331 is formed by an excess flow gap formed between the wall of the delay chamber 332 and the valve element 32. The delay path 331 is simple in structure and easy to set.

In other embodiments, the drain control valve 30 may also be an electrically controlled valve, the electrically controlled valve controls the valve port 314 to open for a predetermined period of time and then closes the valve port 314, and the actuator 50 is electrically connected to the electrically controlled valve. The opening time of the valve port 314 is directly controlled by the electric control valve, the structure is simple, and the control is reliable.

While the foregoing description shows and describes the preferred embodiments of the present invention, it is to be understood that the utility model 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 inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims

1. A toilet bowl drain device, comprising:

a toilet tank having a discharge port;

and the starting piece controls the opening of the drainage control valve.

2. The toilet drainage device of claim 1, wherein in an initial state, the toilet tank is in communication with the flush channel through the drain opening.

3. The toilet drain of claim 1, wherein a water seal is formed at the bottom of the bowl, and the valve port and the jet port are both located below the water level of the water seal.

4. The toilet drainage device of claim 1, wherein the valve port is disposed proximate the jet opening.

5. A toilet drainage device as claimed in claim 4, wherein the bowl is provided with a nozzle head at the bottom thereof, the nozzle head has two ends extending therethrough, the inner end of the nozzle head forms the jet orifice, the outer end of the nozzle head forms the valve port or the outer end of the nozzle head is in sealed communication with the valve port; the spray head and the toilet seat body are integrally formed, or the spray head is independently formed and fixedly arranged on the toilet seat body.

6. The toilet drainage device of claim 1, wherein the drainage control valve is a mechanical valve, the mechanical valve further comprises a valve core matched with the valve port and a delay mechanism for controlling the valve core to close the valve port in a delayed manner, and the actuating member drives the valve core.

7. A toilet drainage device as claimed in claim 6, wherein the bowl is provided with a nozzle at the bottom thereof, the nozzle having two ends extending therethrough, the nozzle having an inner end forming the jet orifice and an outer end forming the valve port or being in sealed communication with the valve port; the water discharge control valve also comprises a valve body with an inner cavity, the valve body is provided with a valve inlet communicated with the inner cavity and a valve outlet communicated with the inner cavity, the valve inlet is communicated with the water discharge port through a communicating pipe, the valve outlet is communicated with the outer end of the spray head in a sealing way, the valve port is positioned in the inner cavity to communicate the valve inlet and the valve outlet, the inner cavity of the communicating pipe, the inner cavity of the valve body and the inner cavity of the spray head form the flushing water channel together, and the valve core and the time delay mechanism are arranged on the valve body.

8. The toilet drainage device of claim 6, wherein the delay mechanism comprises a delay channel, a delay chamber communicating with the flush channel, and an elastic member for driving the valve core to reset to close the valve port, and when the valve core moves in a direction to open the valve port, the delay chamber is compressed to allow water in the delay chamber to flow into the flush channel through the delay channel; when the valve core moves towards the direction of closing the valve port under the action of the elastic force of the elastic part, the water in the flushing water channel slowly flows into the delay cavity through the delay channel.

9. The toilet drainage device of claim 8, wherein the delay passage is formed by an overflow aperture provided in the wall of the delay chamber or in the valve core; or the delay channel is formed by an overflowing gap which is arranged between the cavity wall of the delay cavity and the valve core.

10. The toilet drainage device according to claim 8, wherein the delay mechanism further comprises a check valve for controlling the flow cross-sectional area of the delay passage to be small, and when the valve core moves towards the opening direction of the valve port, the check valve controls the delay passage to be large so that the water in the delay cavity flows into the flushing waterway through the delay passage relatively quickly; when the valve core moves towards the direction of closing the valve port, the one-way valve controls the delay channel to be opened less, so that the water in the flushing water channel flows into the delay cavity slowly through the delay channel.

11. A toilet drainage device as claimed in claim 10, wherein the one-way valve is provided on the wall of the delay chamber or on the valve element or between the wall of the delay chamber and the valve element.

12. A toilet drainage device as claimed in claim 11, wherein the valve core includes a valve rod and a valve plate connected to one end of the valve rod, the valve plate is engaged with the valve port, the other end of the valve rod penetrates through the delay chamber, a piston portion is disposed on the valve rod, the piston portion is engaged with the delay chamber to compress water in the delay chamber, a through hole is disposed on the piston portion, the check valve is slidably disposed in the through hole, when the valve core moves in a direction to open the valve port, an over-flow sectional area of the delay passage formed between the check valve and the piston portion is larger, and when the valve core moves in a direction to close the valve port, an over-flow sectional area of the delay passage formed between the check valve and the piston portion is smaller.

13. The toilet drainage device according to claim 12, wherein the check valve includes a valve post and a valve disc, the valve post is provided with a flow passage groove extending in an axial direction, the valve post is inserted into the through hole, the valve disc is fitted with an end surface of the through hole, a gap between the valve disc and the end surface of the through hole and the flow passage groove form the delay passage, when the valve core moves in a direction to open the valve port, the check valve moves to an end surface of the valve disc far away from the through hole under the action of water pressure so that a flow passage cross-sectional area of the delay passage is larger, and when the valve core moves in a direction to close the valve port, the check valve moves to an end surface of the valve disc abutting against the through hole under the action of water pressure so that the flow passage cross-sectional area of the delay passage is smaller.

14. The toilet drainage device of claim 1, wherein the drainage control valve is an electrically controlled valve that controls the valve port to open for a predetermined period of time and then close, and the actuator is electrically connected to the electrically controlled valve.

15. A toilet drainage device as claimed in claim 1, wherein the actuator is located in a mounting hole provided in a front wall of the toilet seat.