CN113833067A

CN113833067A - Pilot-operated overflow structure and closestool device using same

Info

Publication number: CN113833067A
Application number: CN202111003033.8A
Authority: CN
Inventors: 李智生; 陈雪瑜
Original assignee: Guli Xiamen Technology Co Ltd
Current assignee: Guli Xiamen Technology Co Ltd
Priority date: 2021-08-30
Filing date: 2021-08-30
Publication date: 2021-12-24

Abstract

The invention discloses a pilot overflow structure and a closestool device using the same, wherein the pilot overflow structure comprises: a water tank having a water storage chamber; the overflow channel is provided with an overflow port communicated with the water storage cavity; the first sealing cover is connected with the overflow port, and a through small hole is formed in the first sealing cover; a second sealing cover which is connected with the small hole; the buoyancy device comprises a floating barrel, the floating barrel is arranged in the water tank to move up and down along with the water level of the water storage cavity, and when the floating barrel floats upwards, the first sealing cover is driven to open the small hole and then the second sealing cover is driven to open the overflow port. The invention can greatly reduce the volume of the floating barrel on the basis of ensuring that the opening and closing of the overflow port are reliably controlled, is beneficial to the miniaturization design of the water tank and has better universality.

Description

Pilot-operated overflow structure and closestool device using same

Technical Field

The invention relates to the technical field of overflow structures of water tanks, and also relates to a closestool device with the overflow structure.

Background

In the existing closestool device with the water tank, the water tank is provided with an overflow channel, when the water inlet valve of the water tank is abnormal and water can not be stopped, the water rising in the water tank can be discharged into the urinal of the closestool through the overflow channel, and the water flow is prevented from overflowing to the outside of the closestool device.

Existing overflow channels are typically designed to communicate with the drain channel of the cistern so that no additional channels are required to direct overflow water into the toilet bowl. However, the overflow port of the overflow channel is communicated with the air in the water tank, and the drainage channel usually forms negative pressure during drainage, so that the external air can enter the overflow channel from the overflow port and then enter the drainage channel, the suction of the air can affect the drainage speed, generate the problems of larger drainage noise and the like, or in some structures, in order to improve the drainage flow of the water tank, the drainage channel is required to be isolated from the external air, so as to realize the siphon drainage function. In view of this, the prior art is provided with a buoyancy device for controlling the opening and closing of the overflow port, and the buoyancy device controls the sealing cover to close the overflow port in the normal state of the water level of the water tank, so that no outside air enters the drainage channel through the overflow channel in the drainage process of the water tank, and after the water level of the water tank rises above the working water level, the buoyancy device floats and drives the sealing cover to open the overflow port, so that the water in the water tank can be normally overflowed.

However, under the negative pressure effect that produces when drainage channel drains water, buoyancy device need overcome the reverse effort of this negative pressure and just can drive sealed lid and open the overflow mouth, and under the great condition of the reverse effort of negative pressure, prior art is usually through the volume that increases the keg float for the buoyancy of keg float increases, and then can effectively overcome the reverse effort of this negative pressure effect on sealed lid. However, the floating barrel occupies the space in the water tank after the volume of the floating barrel is increased, the degree of freedom of the size design of the water tank is small, the universality is poor, and the shape of the closestool can be influenced.

Disclosure of Invention

In view of the above, the present invention is directed to a pilot overflow structure and a toilet device using the same, which can greatly reduce the volume of a float bowl, facilitate the miniaturization design of a water tank, and improve the versatility of the water tank on the basis of reliably controlling the opening and closing of an overflow port.

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

a pilot-operated overflow structure, comprising:

a water tank having a water storage chamber;

the overflow channel is provided with an overflow port communicated with the water storage cavity;

the first sealing cover is connected with the overflow port, and a through small hole is formed in the first sealing cover;

a second sealing cover which is connected with the small hole;

the buoyancy device comprises a floating barrel, the floating barrel is arranged in the water tank to move up and down along with the water level of the water storage cavity, and when the floating barrel floats upwards, the first sealing cover is driven to open the small hole and then the second sealing cover is driven to open the overflow port.

In some preferred embodiments, the first sealing cover and the second sealing cover are both arranged on the floating barrel, and the first sealing cover and the floating barrel can be movably arranged relatively; the first sealing cover is connected with the overflow port in a sealing mode, and the second sealing cover is connected with the small hole in a sealing mode.

In some preferred embodiments, a connecting rod extends upwards from the top of the floating barrel, one side of the second sealing cover is fixedly connected to the connecting rod, one side of the first sealing cover is sleeved outside the connecting rod and can slide up and down along the connecting rod, and the first sealing cover is located between the second sealing cover and the top end of the floating barrel.

In some preferred embodiments, a first sealing element is arranged between the first sealing cover and the overflow port, and a second sealing element is arranged between the second sealing cover and the small hole; or the first sealing cover and the second sealing cover are made of soft materials, the first sealing cover can be in sealing connection with the overflow port, and the second sealing cover can be in sealing connection with the small hole.

In some preferred embodiments, the first sealing element and the second sealing element are integrally formed, a connecting portion between the first sealing element and the second sealing element is arranged through the small hole, the first sealing element is positioned on one side of the first sealing cover matched with the overflow port, and the second sealing element is positioned on one side of the first sealing cover matched with the second sealing cover.

In some preferred embodiments, the buoyancy device further comprises a small water cup arranged in the water tank, the floating barrel can be movably arranged in the small water cup up and down, the top end of the small water cup is open, the bottom of the small water cup is provided with a water drainage port, and the water drainage port is provided with a one-way valve.

In some preferred embodiments, the small water cup is fixed on the outer wall of the overflow channel, and a limit structure for preventing the floating barrel from separating from the small water cup when floating is arranged between the floating barrel and the small water cup.

In some preferred embodiments, the overflow channel is formed in an overflow pipe, the overflow pipe includes a first pipe section and a second pipe section, the first pipe section is fixedly arranged relative to the water tank, the second pipe section and the first pipe section can be sleeved together in a sealing mode, and the buoyancy device and the second pipe section are assembled together.

In some preferred embodiments, a drain valve for controlling the drainage of the water tank is arranged in the water tank, the drain valve is provided with a base fixed on the bottom wall of the water tank, a drainage port is formed on the base, and the overflow channel is formed in an overflow pipe; the overflow pipe is fixed on the base, and an outlet of the overflow channel is communicated with the water outlet, or the overflow pipe is independent of the water discharge valve.

The invention also provides a toilet device, which comprises a flushing channel for providing flushing water for a toilet bowl and the pilot overflow structure, wherein the water outlet of the water tank and the outlet of the overflow channel are communicated with the flushing channel.

Compared with the prior art, the invention has the beneficial effects that:

the first sealing cover is arranged and connected with the overflow port in a covering mode, the first sealing cover is provided with a through small hole, the second sealing cover is connected with the small hole in a covering mode, the first sealing cover is driven to open the small hole when the floating barrel of the buoyancy device floats upwards, then the second sealing cover is driven to open the overflow port, the area of the small hole covered and connected with the second sealing cover is small, reverse acting force of negative pressure generated when the second sealing cover is subjected to water drainage of a water drainage channel of a water tank is small, required buoyancy of the floating barrel is small, and the negative pressure disappears after the small hole in the first sealing cover is opened, so that the reverse acting force of the negative pressure acting on the first sealing cover disappears immediately, and the floating barrel can drive the first sealing cover to open the overflow port very easily. The buoyancy of the floating barrel required by the invention is greatly reduced, so that the volume of the floating barrel can be greatly reduced, the miniaturization design of the water tank is facilitated, and the universality of the water tank is better.

Drawings

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

fig. 1 is a perspective view of a pilot overflow structure according to an embodiment of the present invention;

FIG. 2 is an exploded view of a pilot overflow configuration according to an embodiment of the present invention;

FIG. 3 is a cross-sectional view of a pilot operated overflow configuration (tank level normal) in accordance with an embodiment of the present invention;

FIG. 4 is a sectional view of the pilot operated overflow structure and the water tank according to an embodiment of the present invention (normal water level condition);

FIG. 5 is a cross-sectional view of a pilot operated overflow structure (with a second seal cover having an aperture open) in accordance with an embodiment of the present invention;

FIG. 6 is a sectional view of the pilot operated overflow structure and tank assembly (with the second seal cover opening) in accordance with one embodiment of the present invention;

fig. 7 is a sectional view of a pilot operated overflow structure according to an embodiment of the present invention (when the first sealing cap opens the overflow port);

FIG. 8 is a sectional view of the pilot operated overflow structure and the tank assembly (with the overflow port open by the first sealing cap) in accordance with one embodiment of the present invention;

fig. 9 is an assembled sectional view of a pilot operated overflow structure and a water tank according to another embodiment of the present invention (normal state of water level in the water tank).

The reference signs are:

10-a water tank; 11-a water storage cavity;

20-an overflow channel; 21-an overflow port; 22-a first tube section; 23-a second tube section;

30-a first sealing cover; 31-small holes;

40-a second sealing cover;

50-a buoyancy device; 51-a floating barrel; 511-link; 512-a limiting rod; 52-small cup; 521-a water discharge opening; 522-one-way valve; 523-limiting hole;

61-a first seal; 62-a second seal; 63-a linking moiety;

70-a drain valve; 71-a base; 711-drainage port.

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 invention and are not intended to limit the invention.

Referring to fig. 1 to 8, a pilot overflow structure according to an embodiment of the present invention includes:

a water tank 10 having a water storage chamber 11;

an overflow channel 20 having an overflow port 21 communicating with the water storage chamber 11;

a first sealing cover 30 connected with the overflow port 21, wherein the first sealing cover 30 is provided with a through small hole 31;

a second sealing cover 40 which is attached to the small hole 31;

the buoyancy device 50 comprises a floating barrel 51, the floating barrel 51 is arranged in the water tank 10 to move up and down along with the water level of the water storage cavity 11, and when the floating barrel 51 floats upwards, the first sealing cover 30 is driven to open the small hole 31 and then the second sealing cover 40 is driven to open the overflow port 21.

In this embodiment, the first sealing cover 30 and the second sealing cover 40 are both disposed on the floating barrel 51, and the first sealing cover 30 and the floating barrel 51 are movably disposed relatively. Specifically, a connecting rod 511 extends upwards from the top of the floating barrel 51, one side of the second sealing cover 40 is fixedly connected to the connecting rod 511, one side of the first sealing cover 30 is sleeved outside the connecting rod 511 and can slide up and down along the connecting rod 511, and the first sealing cover 30 is located between the second sealing cover 40 and the top end of the floating barrel 51.

In this embodiment, preferably, the first sealing cover 30 is sealed and connected to the overflow port 21, and the second sealing cover 40 is sealed and connected to the small hole 31. Specifically, a first sealing member 61 is arranged between the first sealing cover 30 and the overflow port 21, and a second sealing member 62 is arranged between the second sealing cover 40 and the small hole 31. Alternatively, in another embodiment, the first sealing cover 30 and the second sealing cover 40 are both made of soft material, the first sealing cover 30 can be sealed and connected with the overflow port 21, and the second sealing cover 40 can be sealed and connected with the small hole 31.

In this embodiment, the first sealing member 61 and the second sealing member 62 are integrally formed, the connecting portion 63 between the first sealing member 61 and the second sealing member 62 is inserted into the small hole 31, the first sealing member 61 is located on the side of the first sealing cover 30 matching with the overflow port 21, and the second sealing member 62 is located on the side of the first sealing cover 30 matching with the second sealing cover 40.

In this embodiment, as shown in fig. 1 to 3, the buoyancy device 50 further includes a small water cup 52 disposed in the water tank 10, the floating barrel 51 is movably disposed in the small water cup 52 up and down, a top end of the small water cup 52 is open, a bottom of the small water cup is provided with a water discharge opening 521, and a check valve 522 is disposed at the water discharge opening 521.

Preferably, in this embodiment, the small cup 52 is fixed on the outer wall of the overflow channel 20, and a limit structure for preventing the floating bucket 51 from separating from the small cup 52 when the floating bucket 51 floats is arranged between the floating bucket 51 and the small cup 52. Specifically, the limiting structure comprises a limiting hole 523 formed in the small water cup 52 and a limiting rod 512 with one end connected to the floating barrel 51, a clamping hook is arranged at the other end of the limiting rod 512, as shown in fig. 7, after the floating barrel 51 floats, the limiting rod 512 is in limiting fit with the edge of the limiting hole 523 through the clamping hook, so that the floating barrel 51 is prevented from being separated from the small water cup 52.

In order to facilitate assembly, in this embodiment, the overflow channel 20 is formed in an overflow pipe, the overflow pipe comprises a first pipe section 22 and a second pipe section 23, the first pipe section 22 is fixedly arranged relative to the tank 10, the second pipe section 23 and the first pipe section 22 can be sleeved together in a sealing manner, and the buoyancy device 50 and the second pipe section 23 are connected together. Another benefit of this design is that the buoyancy device 50 is attached to the second pipe section 23, and can be sold separately as a unit, as a fitting to a tank for customer selection, etc.

In this embodiment, a drain valve 70 for controlling the drainage of the water tank 10 is disposed in the water tank 10, the drain valve 70 has a base 71 fixed on the bottom wall of the water tank 10, a drainage port 711 is formed on the base 71, and the overflow passage 20 is formed in an overflow pipe; the overflow pipe is fixed on the base 71, and the outlet of the overflow passage 20 is communicated with the water outlet 711. Alternatively, in another embodiment as shown in fig. 9, the overflow tube may alternatively be provided separately from the drain valve 70.

The working process of the invention is briefly described as follows:

referring to fig. 3 and 4, at this time, when the water level of the tank is normal, the floating barrel 51 of the buoyancy device 50 is in the falling position, the first sealing cover 30 is in sealing connection with the overflow port 21, the second sealing cover 40 is in sealing connection with the small hole 31, and during the draining process of the drain valve 70, the external air cannot enter the overflow channel 20 through the overflow port 21.

Referring to fig. 5 and 6, at this time, in case of an abnormal water inlet valve or the like, the water level in the water tank 10 rises, which causes the floating barrel 51 of the buoyancy device 50 to start floating, the floating barrel 51 drives the second sealing cover 40 to open the small hole 31 of the first sealing cover 30 through the connecting rod 511, so that the external air enters the overflow channel 20 through the small hole 31 to eliminate the negative pressure in the overflow channel 20, and the arrows in fig. 6 indicate the flow path of the air entering the overflow channel 20.

Referring to fig. 7 and 8, in the state of fig. 5 and 6, the floating bucket 51 continues to rise, and then drives the first sealing cover 30 to open the overflow port 21, because the negative pressure in the overflow channel 20 is eliminated at this time, the floating bucket 51 can easily drive the first sealing cover 30 to open the overflow port 21, so that the water in the water tank 10 can normally flow out from the overflow channel 20, and the arrows in fig. 8 indicate the overflow path of the water flow.

The present invention also provides a toilet apparatus including a flush passage (not shown) for supplying flush water to a toilet bowl (not shown), and further including any of the above-described pilot-operated overflow structures, the drain port 711 of the tank 10 and the outlet of the overflow passage 20 both communicating with the flush passage. Preferably, the outlet of the flushing channel is located below the level of the bottom seal of the toilet bowl. Like this, under the state of not washing, wash the passageway and can keep completely cutting off with the outside air, wash the passageway and can deposit full water so that when washing next time, can form hydrocone type drainage, greatly improved the washing effect, promote toilet device's flushing performance.

While the foregoing description shows 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 to be construed as excluding other embodiments and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as described 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 invention as defined by the appended claims.

Claims

1. A pilot-operated overflow structure, comprising:

a water tank having a water storage chamber;

the first sealing cover is covered and connected with the overflow port, and a through small hole is formed in the first sealing cover;

the second sealing cover is covered and connected with the small hole;

2. The pilot-operated overflow structure of claim 1, wherein the first and second sealing caps are both provided on the float, and the first sealing cap and the float are movably provided relative to each other; the first sealing cover is connected with the overflow port in a sealing mode, and the second sealing cover is connected with the small hole in a sealing mode.

3. The pilot-operated overflow structure of claim 2, wherein a connecting rod extends upward from the top of the floating barrel, one side of the second sealing cover is fixedly connected to the connecting rod, one side of the first sealing cover is sleeved outside the connecting rod and can slide up and down along the connecting rod, and the first sealing cover is located between the second sealing cover and the top end of the floating barrel.

4. The piloted overflow structure of claim 1, wherein a first seal is positioned between the first seal cap and the overflow port and a second seal is positioned between the second seal cap and the orifice; or the first sealing cover and the second sealing cover are made of soft materials, the first sealing cover can be in sealing connection with the overflow port, and the second sealing cover can be in sealing connection with the small hole.

5. The pilot-operated overflow structure of claim 4, wherein the first sealing element and the second sealing element are integrally formed, a connecting portion between the first sealing element and the second sealing element is inserted into the small hole, the first sealing element is located on a side where the first sealing cover is matched with the overflow port, and the second sealing element is located on a side where the first sealing cover is matched with the second sealing cover.

6. The pilot-operated overflow structure according to claim 1, wherein the buoyancy device further comprises a small water cup disposed in the water tank, the floating bucket is movably disposed in the small water cup up and down, the top end of the small water cup is open, the bottom of the small water cup is provided with a water discharge opening, and the water discharge opening is provided with a one-way valve.

7. The pilot-operated overflow structure according to claim 6, wherein the small water cup is fixed on the outer wall of the overflow passage, and a limit structure for preventing the floating bucket from being separated from the small water cup when floating is arranged between the floating bucket and the small water cup.

8. The piloted overflow structure of claim 1, wherein the overflow channel is formed in an overflow tube, the overflow tube comprising a first section and a second section, the first section being fixedly disposed with respect to the tank, the second section being sealingly engageable with the first section, the buoyancy device being engageable with the second section.

9. The pilot-operated overflow structure of claim 1, wherein a drain valve for controlling the drainage of the tank is provided in the tank, the drain valve having a base fixed to a bottom wall of the tank, the base having a drain opening formed therein, the overflow passage being formed in an overflow pipe; the overflow pipe is fixed on the base, and an outlet of the overflow channel is communicated with the water outlet, or the overflow pipe is independent of the water discharge valve.

10. A toilet assembly including a flush passage for providing flush water to a toilet bowl, further comprising a pilot-operated overflow arrangement as claimed in any one of claims 1 to 9, the outlet of the tank and the outlet of the overflow passage both communicating with the flush passage.