CN109736404B

CN109736404B - Clean closestool and drain valve subassembly

Info

Publication number: CN109736404B
Application number: CN201910160203.XA
Authority: CN
Inventors: 林孝发; 林孝山; 黄冠乔; 张胜阳; 叶胜
Original assignee: Jomoo Kitchen and Bath Co Ltd
Current assignee: Jomoo Kitchen and Bath Co Ltd
Priority date: 2019-03-04
Filing date: 2019-03-04
Publication date: 2024-03-29
Anticipated expiration: 2039-03-04
Also published as: CN109736404A

Abstract

The invention discloses a clean closestool, which comprises a water tank, an injection pipeline, a brushing pipeline, a drain valve, an air inlet pipeline and an air inlet valve assembly, wherein the water tank is connected with the injection pipeline; one end of the air inlet pipeline is communicated with the injection pipeline, and the other end of the air inlet pipeline extends into the water tank and is communicated with the atmosphere when the air inlet valve assembly is opened; the air inlet valve component is opened when the water level in the injection pipeline is higher than the manually set water level and is closed when the water level in the injection pipeline is lower than the manually set water level; the spray line is isolated from the scrubbing line when the drain valve is closed. The utility model also discloses a drain valve subassembly, including drain valve, intake pipe and admission valve subassembly, the one end of intake pipe communicates with the below of drain valve, has seted up the inlet port on the other end. The clean closestool can store pre-stored water higher than the water sealing surface in the spraying pipeline, and is water-saving and energy-saving; but also can isolate the direct contact between the pre-stored water in the injection pipeline and the drain valve, avoid the pollution of the water in the water tank and promote the overall cleanliness. The drain valve assembly is used for isolating the drain valve, and avoids polluting the drain valve.

Description

Clean closestool and drain valve subassembly

Technical Field

The invention relates to the field of bathrooms, in particular to a cleaning closestool.

Background

According to the publication of the patent document with publication number CN105464184A, water-saving toilet bowl, the publication of the patent document is 2016, 04 and 06, and the existing siphon toilet bowl is provided with a one-way valve in the water tank so as to seal and isolate the spraying pipeline from the brushing pipeline when the drain valve is in a closed state. When the closestool is in a drainage state, the one-way valve can be opened due to water flow impact, namely, after the drainage valve is opened, the one-way valve can also be opened, so that the spraying pipeline and the brushing pipeline are simultaneously opened. After the drain valve is closed, the one-way valve is also closed, so that part of pre-stored water is reserved in the injection pipeline after each flushing is finished, the pre-stored water in the injection pipeline can directly act on the injection port when the water is flushed next time, the injection force of water flow is increased, the formation of siphonage is promoted, and the water-saving effect is realized. Different from the common siphon toilet, the water flow energy loss and the slow siphon formation caused by the fact that a large amount of air in the injection pipeline is discharged firstly and then the injection flushing can be carried out.

However, the above-mentioned pre-stored water toilets also have the following problems: because the jet orifice of the jet pipeline is directly communicated with the bottom of the toilet, dirty water in the bottom of the toilet can pollute pre-stored water in the jet pipeline and further pollute the bottom surface of the drain valve; when the drain valve is opened, the bottom surface of the drain valve can enter the water tank, so that purified water in the water tank can be polluted. The water source in the water tank cannot ensure the cleaning effect of flushing after being polluted, and peculiar smell and dirt can be generated in the water tank over time due to accumulation of a large amount of bacteria, so that the overall cleanliness of the closestool is not guaranteed.

Disclosure of Invention

The invention aims to overcome the defects or problems in the prior art and provide a clean toilet which can store pre-stored water higher than a water sealing surface in an injection pipeline, so that when a drain valve is opened, the pre-stored water can be directly flushed into an injection port, and water and energy are saved; but also can isolate the direct contact between the pre-stored water in the injection pipeline and the drain valve, so as to avoid the pollution of the water in the water tank and ensure the cleanliness of the flushing water flow. A drain valve assembly is also provided for isolating the drain valve after draining, avoiding contamination of the drain valve.

In order to achieve the above purpose, the present invention adopts the following technical scheme:

the first technical scheme relates to a cleaning closestool, which comprises a water tank, a spray pipeline, a brushing pipeline and a drain valve; the air inlet pipeline and the air inlet valve assembly are further included; one end of the air inlet pipeline is communicated with the injection pipeline, and the other end of the air inlet pipeline extends into the water tank and is communicated with the atmosphere when the air inlet valve assembly is opened; the air inlet valve component is opened when the water level in the injection pipeline is higher than the manually set water level and is closed when the water level in the injection pipeline is lower than the manually set water level; the spray pipeline is isolated from the brushing pipeline when the drain valve is closed.

Based on the first technical scheme, a second technical scheme is also provided, in the second technical scheme, one end of the air inlet pipeline extending into the water tank is higher than the highest water level of the water tank, and an air inlet hole is formed in the air inlet pipeline; the air inlet valve assembly comprises a first floating ball, a connecting rod and a first plug, and the first floating ball floats in water in the injection pipeline; one end of the connecting rod is connected with the first floating ball, and the other end of the connecting rod penetrates through the air inlet hole and then is connected with the first plug; the first plug is used for plugging or opening the air inlet; when the water level in the injection pipeline is lower than or equal to a first water level set by people, the first floating ball is at the lowest position, and the first floating ball drives the first plug to plug the air inlet hole through the connecting rod; when the water level in the injection pipeline is higher than a first water level set by people, the first floating ball is higher than the lowest position, and the first floating ball drives the first plug to open the air inlet hole through the connecting rod.

Based on the first technical scheme, a third technical scheme is also provided, in the third technical scheme, one end of the air inlet pipeline extending into the water tank is higher than the highest water level of the water tank, and an air inlet hole is formed in the air inlet pipeline; the air inlet valve assembly comprises a second plug, a first lever, a heavy object, a pull rope and a floater; the second plug is used for plugging or opening the air inlet; one end of the first lever is provided with a second plug and a weight, the other end of the first lever is connected with one end of a pull rope, and the other end of the pull rope is connected with a floater; the floater is arranged in the water in the injection pipeline; when the water level in the injection pipeline is higher than the first water level set by people, the buoyancy of the floater is larger, so that the weight overcomes the resistance of the floater to drive the second plug to open the air inlet; when the water level in the injection pipeline is lower than the first water level set by people, the buoyancy force born by the floater is small, and the weight can not overcome the resistance of the floater, so that the second plug can plug the air inlet hole.

Based on the first technical scheme, a fourth technical scheme is also provided, in the fourth technical scheme, one end of the air inlet pipeline extending into the water tank is lower than the highest water level of the water tank, and an air inlet hole is formed in the air inlet pipeline; the air inlet valve assembly comprises a third plug, a second lever, a second floating ball, a second plug, a first lever, a heavy object, a pull rope and a floater; the third plug is used for plugging or opening the communication between the air inlet and the atmosphere, one end of the second lever is connected with the third plug, the other end of the second lever is connected with the second floating ball, and the second floating ball floats in water in the water tank; the second plug is used for plugging or opening the air inlet; one end of the first lever is provided with a second plug and a weight, the other end of the first lever is connected with one end of a pull rope, and the other end of the pull rope is connected with a floater; the floater is arranged in the water in the injection pipeline; when the water level in the injection pipeline is higher than the first water level set by people, the buoyancy of the floater is larger, so that the weight overcomes the resistance of the floater to drive the second plug to open the air inlet; when the water level in the injection pipeline is lower than a first water level set by people, the buoyancy force born by the floater is small, and the weight can not overcome the resistance of the floater, so that the second plug can plug the air inlet hole; when the water level of the water tank is reduced to a second water level set by people, the second floating ball drives the third plug to open the air inlet hole through the second lever; when the water level of the water tank rises to a second water level set by people, the second floating ball drives the third plug to block the air inlet hole through the second lever; the second water level is higher than the water level when the drain valve is closed, and is lower than the blocking surface of the third plug for blocking the air inlet hole.

Based on the first technical scheme, a fifth technical scheme is also provided, in the fifth technical scheme, one end of the air inlet pipeline extending into the water tank is lower than the highest water level of the water tank, and an air inlet hole is formed in the air inlet pipeline; the air inlet valve assembly comprises a third plug, a second lever, a second floating ball, a second plug, a first lever, a connecting rod and a first floating ball; the third plug is used for plugging or opening the communication between the air inlet and the atmosphere, one end of the second lever is connected with the third plug, the other end of the second lever is connected with the second floating ball, and the second floating ball floats in water in the water tank; the second plug is used for blocking or opening the communication between the air inlet hole and the air inlet pipeline, one end of the first lever is connected with the second plug, the other end of the first lever is connected with the first floating ball through the connecting rod, and the first floating ball floats in water in the injection pipeline; when the water level in the injection pipeline is higher than a first water level set by people, the first floating ball drives the connecting rod to ascend and drives the second plug to open the air inlet through the first lever; when the water level in the injection pipeline is lower than a first water level set by people, the first floating ball drives the connecting rod to descend and drives the second plug to block the air inlet through the first lever; when the water level of the water tank is reduced to a second water level set by people, the second floating ball drives the third plug to open the air inlet hole through the second lever; when the water level of the water tank rises to a second water level set by people, the second floating ball drives the third plug to block the air inlet hole through the second lever; the second water level is higher than the water level when the drain valve is closed, and is lower than the blocking surface of the third plug for blocking the air inlet hole.

The sixth technical scheme relates to a clean closestool, which comprises a water tank, an injection pipeline, a brushing pipeline, a drain valve, an air inlet pipeline and an air inlet valve assembly; one end of the air inlet pipeline is communicated with the injection pipeline, and the other end of the air inlet pipeline extends into the water tank and is communicated with the atmosphere when the air inlet valve assembly is opened; the air inlet valve component is opened when the water level in the water tank is reduced to the manually set water level and is closed when the water level in the water tank is increased to the manually set water level, and when the air inlet valve component is closed, the water level in the injection pipeline is higher than the water sealing surface; the spray pipeline is isolated from the brushing pipeline when the drain valve is closed.

Based on the sixth technical scheme, a seventh technical scheme is further provided, in the seventh technical scheme, one end of the air inlet pipeline extending into the water tank is lower than the highest water level of the water tank, and an air inlet hole is formed in the air inlet pipeline; the air inlet valve assembly comprises a third plug, a second lever and a second floating ball; the third plug is used for plugging or opening the air inlet to be communicated with the atmosphere; one end of the second lever is connected with the third plug, the other end of the second lever is connected with the second floating ball, and the second floating ball floats in water in the water tank; when the water level of the water tank is reduced to a second water level set by people, the second floating ball drives the third plug to open the air inlet hole through the second lever; until the water tank is refilled, the water level in the water tank is increased to a second water level set by people, and the second floating ball drives the third plug to block the air inlet hole; when the third plug plugs the air inlet, the water level in the injection pipeline is higher than the water seal surface.

Based on any one of the first to seventh technical schemes, an eighth technical scheme is further provided, in the eighth technical scheme, an air inlet cover is arranged at one end of the air inlet pipeline extending into the water tank, and an air inlet hole is formed in the air inlet cover.

Based on the second or fifth technical scheme, a ninth technical scheme is further provided, in the ninth technical scheme, a limiting hole is formed in one side, facing the injection pipeline, of the air inlet pipeline, and one end, extending into the air inlet pipeline, of the connecting rod penetrates through the limiting hole and then is connected with the first floating ball.

Based on the third or fourth technical scheme, still be equipped with tenth technical scheme, in tenth technical scheme, the admission valve subassembly is still including locating the spacing billet in the injection pipe, spacing billet is equipped with perpendicular through-hole, the stay cord stretches into the one end of injection pipe runs through behind the perpendicular through-hole with the float is connected.

An eleventh technical scheme relates to a drain valve assembly for a toilet bowl, comprising a drain valve, an air inlet pipe and an air inlet valve assembly, wherein one end of the air inlet pipe is communicated with the lower part of the drain valve, and the other end of the air inlet pipe is provided with an air inlet hole; the air inlet valve assembly comprises a second plug, a first lever, a heavy object, a pull rope and a floater; the second plug is used for plugging or opening the air inlet; the first lever is arranged in the air inlet pipe; one end of the first lever is provided with a second plug and a weight, the other end of the first lever is connected with one end of a pull rope, and the other end of the pull rope is connected with a floater.

Based on the eleventh technical scheme, a twelfth technical scheme is further provided, and in the twelfth technical scheme, the device further comprises a third plug, a second lever and a second floating ball; the third plug is used for plugging or opening the upper end of the air inlet to be communicated with the atmosphere; the second lever is arranged outside the air inlet pipe; the second lever is connected with the third plug, and the other end of the second lever is connected with the second floating ball.

The thirteenth technical scheme relates to a drain valve assembly for a toilet, comprising a drain valve, an air inlet pipe and an air inlet valve assembly, wherein one end of the air inlet pipe is communicated with the lower part of the drain valve, and the other end of the air inlet pipe is provided with an air inlet hole; the air inlet valve assembly comprises a third plug, a second lever and a second floating ball; the third plug is used for plugging or opening the air inlet to be communicated with the atmosphere; the second lever is arranged outside the air inlet pipe; the second lever is connected with the third plug, and the other end of the second lever is connected with the second floating ball.

From the above description of the present invention, compared with the prior art, the present invention has the following advantages:

1. in the first technical scheme, the cleaning closestool is isolated from the brushing pipeline after the drain valve is closed, so that air is prevented from entering the spraying pipeline through the brushing pipeline, the air can only enter the spraying pipeline through the air inlet pipeline, and the air inlet amount is controlled through the opening and closing of the air inlet valve assembly.

The air inlet valve assembly is used for opening and closing the air inlet pipeline according to the water level in the injection pipeline so as to communicate with the atmosphere; when the water level in the injection pipeline is higher than the manually set water level, the air inlet valve assembly is opened to communicate with the atmosphere so as to form an isolation air layer between the upper part of pre-stored water in the injection pipeline and the lower part of the drain valve; the isolation air layer is used for isolating the pre-stored water and the direct contact of the bottom of the drain valve, so that the drain valve is prevented from polluting the purified water in the water tank, the cleanness of flushing water flow is guaranteed, meanwhile, the accumulation of bacteria in the water tank is reduced, and the overall cleanliness of the closestool is improved.

When the water level in the injection pipeline is lower than the manually set water level, the air inlet valve assembly closes the air inlet pipeline to stop air inlet; the closed-loop control on the air inlet pipeline is formed according to the real-time liquid level condition in the injection pipeline, so that the height of the formed isolation air layer is properly controlled, the phenomenon that the formed air layer is too high, the stored pre-stored water is too little, and the injection force of the water injection in the next flushing is reduced.

2. In the second technical scheme, an air inlet hole is formed in one end of the air inlet pipeline extending into the water tank, and the injection pipeline is isolated from the scrubbing pipeline, so that air can only enter the injection pipeline through the air inlet hole; and because the end of the air inlet pipeline is higher than the highest water level of the water tank, water in the water tank cannot flow into the air inlet hole from above, so that the normal use of the air inlet valve assembly is ensured.

One end of a connecting rod in the air inlet valve assembly is connected with the first floating ball, and the other end of the connecting rod penetrates through the air inlet hole and then is connected with the first plug, namely the first plug can move upwards or downwards relative to the air inlet hole according to the vertical movement of the first floating ball relative to the injection pipeline so as to open or close the air inlet hole. The position of the first floating ball relative to the injection pipeline depends on the real-time water level in the injection pipeline.

Specifically, when the water level in the injection pipeline is lower than or equal to the first water level set by people, the first floating ball in the injection pipeline is at the lowest position, and a first plug connected with the first floating ball can block the air inlet hole to close the air inlet pipeline; when the water level in the injection pipeline is higher than the first water level set by people, the first floating ball can move upwards relative to the injection pipeline along with the rising of the water level in the injection pipeline, and meanwhile, the first plug is driven to move upwards relative to the air inlet hole through the connecting rod, so that the first plug opens the air inlet hole and opens the air inlet pipeline.

3. In a third technical aspect, the arrangement of the air intake duct is the same as that of the second technical aspect described above, i.e. air can also only enter the injection duct through the air intake hole. In the arrangement of the first lever, one end of the first lever is connected with the second plug and the weight, the other end of the first lever is connected with the floater through the pull rope to form a lever relation, specifically, in the arrangement of the first lever, the end where the second plug and the weight are located provides power of the lever, and the end where the floater is located provides resistance of the lever, namely, the floater is used for preventing the weight from driving the first lever to swing downwards, so that the second plug seals the air inlet hole. The power of the lever mainly depends on the gravity of the weight, and the weight of the weight is moderately set so as to avoid the problems of untimely plugging and excessive air input caused by too far distance between the second plug and the air inlet hole.

Wherein, since the float is placed in the water of the injection pipe, there are two cases in which the float varies according to the water level of the injection pipe: the first condition is that the floater moves upwards relative to the injection pipeline along with the rising of the water level, and when the water level rises to a first water level set by people, the floater moves upwards along with the water level to enable the pull rope to be converted into a loose state from a tight state; at this time, the resistance provided by the floater to the first lever is 0, and then one end of the first lever provided with the weight can move downwards due to the gravity of the weight, so that the second plug is driven to open the air inlet.

The second condition is that the floater does not move upwards relative to the injection pipeline along with the rising of the water level, namely the pull rope is always kept in a tight state, and the resistance provided by the floater to the first lever depends on the difference value between the gravity of the floater and the buoyancy of the floater; the power provided by the weight to the first lever is the gravity of the weight. Under the condition that the distances between the power arm and the resistance arm are equal, the lever swinging at the two ends of the first lever depends on the comparison between the power provided by the weight and the resistance provided by the floater, and the end with larger stress value swings downwards due to the leverage. The two conditions are combined, namely, the second plug is opened and closed to the air inlet hole, and the opening and closing of the second plug depend on whether the weight can overcome the resistance of the floater or not.

Specifically, when the water level in the injection pipeline is higher than the first water level set by people, the buoyancy force borne by the floater is larger, the resistance of the lever is reduced, namely the lever power is larger than the lever resistance, so that the weight drives the second plug to open the air inlet pipeline to communicate with the atmosphere; the continuously fed air forms an insulating air layer in the injection duct.

The formed isolation air layer can push the water surface of the injection pipeline downwards along with the increase of the air inflow, so that the water level in the injection pipeline is continuously reduced; when the water level in the injection pipeline is lower than the first water level set by people, the buoyancy force borne by the floater is small, the lever resistance is increased, one end of the floater moves downwards relative to the air inlet, and the end of the weight is lifted up due to the reverse driving of the lever action, so that the second plug is driven to plug the air inlet, and the air inlet pipeline is closed to stop air inlet.

The closed-loop control on the air inlet pipeline is formed in the process, so that the formed isolation air layer is moderate in height, the pre-stored water quantity in the injection pipeline is not too small, and the injection force in the next flushing is effectively guaranteed.

4. In the fourth technical means, in order to save the space of the water tank, the water tank is not set higher because the highest water level needs to be extended for the air intake duct, and therefore, in the fourth technical means, one end of the air intake duct is placed below the highest water level of the water tank. And then need to set up the upper end that the shutoff inlet port was come to the third end, avoid water in the water tank to pour into in the inlet port from the top, influence the normal use of admission valve subassembly.

Specifically, the second floating ball arranged at one end of the second lever can move downwards along with the falling of the water level in the water tank or move upwards along with the rising of the water level, so that the third plug arranged at the other end of the second lever can lift or press downwards relative to the air inlet hole due to the leverage to open or close the upper end of the air inlet hole. The arrangement and effects of the second plug, the first lever, the weight, the pull rope and the floater in the technical scheme are as described in the third point of the beneficial effects, and repeated description is omitted; the second plug in the arrangement is used for opening or closing the lower end of the air inlet hole according to the swing of the first lever.

The specific implementation principle of the air inlet valve assembly is as follows: after the drain valve is opened, the injection pipeline is filled with water; the water level in the jet pipeline is higher than the first water level set by people, the buoyancy of the floater is larger, and the weight overcomes the resistance of the floater to drive the second plug to open the air inlet hole, so that the lower end of the open air inlet hole is communicated with the air inlet pipeline.

When the water level of the water tank is reduced to a second water level which is manually set, the second floating ball drives the third plug to lift up to open the air inlet hole, so that the upper end of the air inlet hole is opened.

When the water level of the water tank is reduced to the lowest water level, the drain valve is automatically closed, and water is refilled in the water tank; at this time, as the blocking surfaces of the third plug and the air inlet hole are higher than the lowest water level, the upper end and the lower end of the air inlet hole are in an open state, and air can be continuously input into the injection pipeline through the air inlet hole to form an isolation air layer.

The formed isolation air layer can enable the water level in the injection pipeline to continuously drop until the water level in the injection pipeline is lower than a first water level set by people, and the weight can not overcome the resistance of the floater, so that the second plug can block the lower end of the air inlet hole, and air inlet is stopped.

Because the water is continuously injected into the water tank until the water level in the water tank rises to a second water level which is set by people, the second floating ball drives the third plug to press down so as to block the upper end of the air inlet hole, and therefore the upper end and the lower end of the air inlet hole are completely closed.

Then the water tank is filled with purified water gradually, and the water tank is not covered by the blocking surfaces of the third plug and the air inlet hole; the water level when the water tank is filled with water is the highest water level of the water tank.

Specifically, the second water level set by people is higher than the water level when the drain valve is closed, so that the third plug opens the upper end of the air inlet before the drain valve is closed, and the subsequent air input is facilitated; and the second water level is lower than the blocking surface of the third plug for blocking the air inlet hole, so that the upper end of the air inlet hole is closed before the water level in the water tank is higher than the blocking surface, and water in the water tank is prevented from being poured into the air inlet hole.

The air inlet speed of the air inlet valve assembly is higher than the water storage speed of the water tank, so that the second plug is used for plugging the lower end of the air inlet hole before the water level of the water tank is restored to the second water level set by people, and closed-loop control is also formed on the air inlet pipeline, so that the formed isolation air layer is prevented from being too high; when the water level of the water tank is restored to the second water level set by people, the third plug can plug the upper end of the air inlet hole, so that the air inlet hole is always kept dry, and the subsequent normal use of the air inlet valve assembly is not influenced.

5. In a fifth technical scheme, one end of a first lever of the air inlet valve assembly is connected with a second plug, and the other end of the first lever is connected with a first floating ball through a connecting rod. The first floating ball can rise or fall along with the real-time water level in the injection pipeline so as to drive the connecting rod to move upwards or downwards, and further the first lever reversely drives the second plug to swing downwards or lift upwards relative to the lower end of the air inlet hole so as to open or close the lower end of the air inlet hole. Wherein, the connecting rod is the rigid connecting rod, and the floater is hollow structure in order to increase its buoyancy that receives.

Specifically, when the water level in the injection pipeline is higher than a first water level set by people, one end of the first lever can be tilted due to the lifting of the first floating ball driving connecting rod, and due to the leverage, the second plug arranged at the other end of the first lever can move downwards relative to the air inlet hole, so that the lower end of the air inlet hole is opened;

when the water level in the injection pipeline is lower than the first water level set by people, one end of the first lever can sink due to the fact that the first floating ball drives the connecting rod to move downwards, and due to the leverage, the second plug arranged at the other end of the first lever can be lifted up relative to the air inlet hole, so that the lower end of the air inlet hole is plugged.

The arrangement and effects of the third plug, the second lever and the second floating ball in the air inlet valve assembly are as described in the 4 th point of the beneficial effects, and are not repeated. In the technical scheme, on the premise of ensuring that the pre-stored water is stored in the injection pipeline, the pre-stored water and the drain valve are isolated by forming an isolating air layer with moderate height, so that the cleaning of a water source in the water tank is ensured.

6. In a sixth technical scheme, the air inlet valve assembly is used for driving the third plug to open and close the air inlet pipeline according to the height of the water level in the water tank, the air inlet valve assembly is used for opening the air inlet pipeline to communicate with the atmosphere to form an isolation air layer when the water level in the water tank is reduced to a second water level set by people, and is used for closing the air inlet pipeline to stop air inlet when the water level in the water tank is increased to the second water level set by people, so that the excessive input air quantity is avoided, the pre-stored water in the injection pipeline is caused to be too little, and the loss of injection potential energy is caused.

In particular, the injection line is isolated from the scrubbing line when the drain valve is closed, as is the prevention of air entering the injection line via the scrubbing line. The water level in the injection pipeline is higher than the water seal surface when the air inlet valve assembly is closed, the water level of the water tank after the air inlet valve assembly is closed is limited, the second water level set by people is ensured not to be too high, the exhaust valve assembly is closed too late, the input air quantity is too high, the pre-stored water stored in the injection pipeline is insufficient, and the effects of water saving and energy saving cannot be achieved.

7. In the seventh technical scheme, one end of the air inlet pipeline in the cleaning closestool stretches into the water tank to be lower than the highest water level of the water tank, so that the second floating ball can float in water in the water tank. One end of the second lever is connected with the third plug, and the other end of the second lever is connected with the second floating ball to form a lever relation.

After the drain valve is opened, the second floating ball can move downwards along with the falling of the water level, when the water level of the water tank is reduced to the second water level set by people, the second floating ball at one end of the second lever moves downwards, and the third plug at the other end of the second lever can be lifted upwards to open the air inlet hole due to the leverage, so that the air inlet pipeline is communicated with the atmosphere.

After the third plug opens the air inlet, the drain valve is closed to isolate the spraying pipeline and the brushing pipeline, so that pre-stored water can be stored in the spraying pipe. During the time when the intake duct is open to the atmosphere, air can only enter the injection duct from the intake aperture to form an insulating layer between the upper side of the pre-stored water of the injection duct and the lower side of the drain valve.

During the closing period of the drain valve, the water level in the water tank can rise again due to the refilling of the water tank, and the second floating ball floating in the water tank can move upwards along with the rising of the water level; when the water level of the water tank rises to a second water level which is manually set, the second floating ball at one end of the second lever is lifted, and the third plug at the other end of the second lever is pressed down to block the air inlet hole due to the lever action, so that air inlet is stopped.

When the third plug plugs the air inlet hole, the water level of pre-stored water in the injection pipe is always higher than the water cover so as to ensure the next injection flushing effect.

8. In the eighth technical scheme, one end of the air inlet pipeline extending into the water tank is provided with an air inlet cover, namely, one end of the air inlet pipeline extending into the water tank is covered with an air inlet cover, the air inlet cover is connected with the air inlet pipeline in a sealing manner, and on the premise that the injection pipeline is isolated from the brushing pipeline, air can only enter the injection pipeline through an air inlet hole formed in the air inlet cover. Compared with an air inlet pipeline, the air inlet cover is easy to process, and the manufacturing cost is reduced; and can be used for controlling the speed of the input air by changing the air inlet covers with different apertures, and is suitable for cleaning toilets with different settings.

9. In the ninth technical scheme, one end of the connecting rod extending into the air inlet pipeline penetrates through the limiting hole and then is connected with the first floating ball, namely the limiting hole arranged on one side of the air inlet pipeline facing the injection pipeline is used for limiting the left-right swing of the connecting rod, so that the connecting rod keeps the same posture and moves vertically relative to the air inlet pipeline.

10. In the tenth technical scheme, one end of the pull rope extending into the injection pipeline penetrates through the vertical through hole formed in the limiting steel bar and then is connected with the floater, namely the vertical through hole formed in the limiting steel bar is used for limiting the left and right swing of the pull rope, so that the pull rope keeps the same posture and moves vertically relative to the injection pipeline.

11. In the eleventh technical scheme, the drain valve assembly utilizes the air inlet valve assembly arranged in the air inlet pipe to open and close the air inlet hole so as to form an isolation air layer by inputting air to the lower part of the drain valve after draining water, thereby avoiding secondary pollution to the drain valve caused by other pollutants. Specifically, through the arrangement of the first lever, one end provided with the second plug moves downwards or upwards due to the change of the stress of the lever so as to open or close the air inlet hole, so that the input air quantity is controlled to be moderate. The drain valve assembly is simple in structure, can be independently processed and is low in manufacturing cost.

12. In the twelfth technical scheme, besides the arrangement of the first lever in the eleventh technical scheme, the second lever provided with the third plug and the second floating ball is also arranged to realize the opening and closing of the upper end of the air inlet hole, namely, the second lever is matched with the second plug for opening and closing the lower end of the air inlet hole, so that the water inlet of the air inlet hole is avoided, the normal use of the drain valve assembly is ensured, the input air quantity is reasonably controlled, and the drain valve assembly is suitable for wide application.

13. In the thirteenth technical scheme, the second lever provided with the third plug and the second floating ball is used for opening and closing the air inlet hole, and air is input to the lower part of the drain valve after draining to form an isolation air layer, so that pollution of the drain valve is avoided. Specifically, through the arrangement of the second lever, one end provided with the third plug moves upwards or downwards due to the change of the stress of the lever so as to block or open the air inlet hole. The drain valve assembly is simple in structure and easy to install and maintain.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments below are briefly introduced, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a first embodiment of the present invention;

FIG. 2 is a schematic view of an air intake in an open state according to a second embodiment of the present invention;

FIG. 3 is a schematic view of a structure of an air intake in a closed state according to a second embodiment of the present invention;

FIG. 4 is a schematic view of a third embodiment of a cleaning toilet according to the present invention;

FIG. 5 is a schematic view of an air intake in an opened state according to a third embodiment of the present invention;

FIG. 6 is a schematic view of a third embodiment of the present invention in which the air intake is closed;

FIG. 7 is a schematic diagram of a fourth embodiment of the present invention;

FIG. 8 (A) is a schematic diagram of the structure of the fifth embodiment of the present invention when the water level of the water tank is at the highest level;

FIG. 8 (B) is a schematic view of an air intake in an opened state according to a fifth embodiment of the present invention;

FIG. 9 (C) is a schematic view of a fifth embodiment of the present invention in which the air intake is closed; a step of

Fig. 9 (D) is a schematic structural diagram of the fifth embodiment of the present invention when the water level of the water tank is refilled to the highest level.

The main reference numerals illustrate:

a toilet body 1;

a water tank 10;

a jet pipe 20;

an air inlet pipe 21, an air inlet 210 and a limiting hole 211;

a drain valve 30;

the air inlet valve assembly 4,

a first plug 401, a connecting rod 402 and a first floating ball 403;

the second plug 411, the first lever 412, the float 413, the weight 414, the pull rope 415 and the limit steel bar 416;

third plug 421, second lever 422, second floater 423.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the described embodiments are preferred embodiments of the invention and should not be taken as excluding other embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without creative efforts, are within the protection scope of the present invention.

In the claims, specification and drawings hereof, unless explicitly defined otherwise, the terms "first," "second," or "third," etc. are used for distinguishing between different objects and not for describing a particular sequential order.

In the claims, specification and drawings of the present invention, unless explicitly defined otherwise, references to orientation or positional relationship such as the terms "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inner", "outer", "upper", "lower", "front", "rear", "left", "right", "clockwise", "counterclockwise", etc. are based on the orientation and positional relationship shown in the drawings and are merely for convenience of description and to simplify the description, and do not indicate or imply that the apparatus or element referred to must have a particular orientation or be constructed and operated in a particular orientation, nor should it be construed as limiting the particular scope of the invention.

In the claims, specification and drawings of the present invention, unless explicitly defined otherwise, the term "fixedly connected" or "fixedly connected" should be construed broadly, i.e. any connection between them without a displacement relationship or a relative rotation relationship, that is to say includes non-detachably fixedly connected, integrally connected and fixedly connected by other means or elements.

In the claims, specification and drawings of the present invention, the terms "comprising," having, "and variations thereof as used herein, are intended to be" including but not limited to.

Five embodiments, embodiments one through five, are disclosed. In the above five embodiments, the spray pipe 20, the drain valve 30 and the brush pipe of the cleaning toilet have the common feature that the spray pipe 20 and the brush pipe are isolated when the drain valve 30 is closed. Specifically, as in the technical solution disclosed in CN105464184a, in the first and fifth embodiments, the drain valve 30 is disposed between the water tank 10 and the spray pipe 20, and a one-way valve plate that opens toward the brushing pipe is disposed between the brushing pipe and the spray pipe 20; the one-way valve plate loses hydraulic pressure closure when the drain valve is closed. Since the above structure belongs to the prior art, the description thereof is omitted.

Of course, it will be apparent to those skilled in the art that if the drain valve 30 simultaneously opens and closes the communication between the water tank 10 and the spray pipe 20 and the communication between the water tank 10 and the brushing pipe, the spraying pipe 20 and the brushing pipe are isolated, and the effect of isolating the spraying pipe 20 and the brushing pipe when the drain valve 30 is closed can be also achieved. The embodiments of the present invention must be based on the premise that the injection pipe 20 and the brushing pipe are isolated when the drain valve 30 is closed, because if the injection pipe 20 and the brushing pipe are not isolated when the drain valve 30 is closed, the atmosphere can always enter the injection pipe 20 from the brushing pipe, thereby inevitably forming a communicating vessel between the injection pipe 20 and the trap, the water level of the injection pipe 20 will be equal to the water level of the water sealing surface of the trap, i.e. the pre-stored water higher than the water sealing surface cannot be stored in the injection pipe 20, thus the pre-stored water cannot be directly flushed into the injection port when the drain valve 30 is opened

In the first to fifth embodiments, the highest water level of the water tank 10 is the water level in the water tank 10 when the water tank 10 is filled with water; the lowest water level of the water tank 10 is the water level in the water tank 10 when the water discharge valve 30 is closed after the water tank 10 is completely discharged.

In the first embodiment, as shown in fig. 1:

in addition to the common features of each of the above embodiments, in the first embodiment, the cleaning toilet further includes an air intake duct 21 and an air intake valve assembly 4. One end of the intake duct 21 communicates with the injection duct 20 and the other end extends into the tank 10 and communicates with the atmosphere when the intake valve assembly 4 is open.

Specifically, in the first embodiment, an air inlet cover is disposed on the end of the air inlet pipe 21 extending into the water tank 10, and an air inlet hole 210 is disposed on the air inlet cover, and air can only enter the injection pipe 20 through the air inlet hole 210 on the premise that the injection pipe 20 is isolated from the brushing pipe; the end of the air inlet pipeline 21 extending into the water tank 10 is higher than the highest water level of the water tank 10, so that water in the water tank 10 is prevented from being poured into the air inlet pipeline 21 through the upper part of the air inlet hole 210, and the normal use of the air inlet valve assembly 4 is ensured; the air inlet cover is convenient to process and easy to replace. It is of course not excluded that the air inlet opening 210 is provided directly at the end of the air inlet duct 21 extending into the water tank 10. The other end of the intake duct 21 communicates with the injection duct 20, and the intake duct 21 is provided with a limiting hole 211 on a side near the injection duct 20.

The intake valve assembly 4 includes a first plug 401, a connecting rod 402, and a first float 403. In the first embodiment, the link 402 is a rigid link; the first float ball 403 is preferably spherical in hollow structure to increase the buoyancy force to which the first float ball 403 is subjected.

One end of the connecting rod 402 vertically penetrates through the limiting hole 211 and then extends into the injection pipeline 20 to be connected with the first floating ball 403, so that the first floating ball 403 floats in pre-stored water in the injection pipeline 20; the other end of the connecting rod 402 vertically penetrates through the air inlet hole 210 and then is connected with the first plug 401. Wherein, the position of the first floating ball 402 relative to the injection pipeline 20 depends on the real-time water level in the injection pipeline; the first plug 401 is used for moving upwards or downwards relative to the air inlet pipeline 21 after being driven by the connecting rod 402 so as to open or close the air inlet hole 210; the air inlet pipe 21 is provided with a limiting hole 211 for limiting the connecting rod 402 to move up and down in the same posture, so that the connecting rod 402 is prevented from swinging left and right.

In the first embodiment, when the water level in the injection pipe 20 is lower than or equal to the first water level set by the person, the first floating ball 403 is at the lowest position, and the first floating ball 403 drives the first plug 401 to close the air inlet 210 through the connecting rod 402; when the water level in the injection pipeline 20 is higher than the first water level set by people, the first floating ball 403 is higher than the lowest level, and the first floating ball 403 drives the first plug 401 to open the air inlet 210 through the connecting rod 402. That is, the first water level set by man is a real-time water level in the injection duct 20 when the second stopper 401 opens or closes the air intake hole 210, and is higher than the water sealing surface of the trap and lower than the water level when the drain valve 30 closes. The lowest position of the first floating ball 403 is the real-time position of the first floating ball 403 in the injection pipeline 20 when the water level in the injection pipeline 20 is at the first water level set by the person.

In the first embodiment, the cleaning toilet is used as follows:

when the drain valve 30 is opened, the spray pipe 20 is opened, and the water column in the spray pipe 20 is aligned with the bottom of the toilet body 1 for flushing. That is, the water is filled in the injection pipe 30, the water level in the injection pipe 20 is higher than the first water level set by the person, that is, the first floating ball 403 is higher than the lowest level, and the first floating ball 403 drives the first plug 401 to open the air inlet 210 through the connecting rod 402, so as to open the air inlet pipe 21. The intake duct 21 is opened to the atmosphere to input air into the injection duct 20 through the intake hole 210. After the drain valve 30 is closed, an air barrier layer is formed between the upper side of the pre-stored water in the injection pipe 20 and the lower side of the drain valve 30 due to the continuous input of air into the injection pipe 20.

As the input air increases, the forming barrier air layer will push the pre-stored water level in the injection pipe 20 to move down; when the water level of the injection pipe 20 is lower than or equal to the first water level set by the person, the first floating ball 403 moves down to the lowest position along with the water level of the injection pipe 20, and drives the first plug 401 to close the air inlet 210 through the connecting rod 402, so that the air inlet pipe 21 is closed to stop air inlet. Wherein, the height of the formed isolation gas layer is moderate, so that the enough space in the injection pipeline 20 can be ensured to store a proper amount of pre-stored water.

Specifically, since the isolation gas layer isolates the contaminated pre-stored water from direct contact with the drain valve 30, the pre-stored water does not contaminate the purified water of the tank 10 when the drain valve 30 is opened. And the air quantity of the formed isolation air layer is moderate, so that the sufficient pre-stored water quantity in the injection pipeline 20 is effectively ensured, the injection flushing effect is not influenced, and the water and energy saving effect is achieved.

In the second embodiment, as shown in fig. 2 and 3:

in addition to the common features of each of the above embodiments, in the second embodiment, the cleaning toilet further includes an air intake duct 21 and an air intake valve assembly 4. One end of the intake duct 21 communicates with the injection duct 20 and the other end extends into the tank 10 and communicates with the atmosphere when the intake valve assembly 4 is open.

Specifically, in the second embodiment, an air inlet cover is arranged at one end of the air inlet pipe 21 extending into the water tank 10, an air inlet hole 210 is arranged on the air inlet cover, and air can only enter the injection pipe 20 through the air inlet hole 210 on the premise that the injection pipe 20 is isolated from the brushing pipe; the end of the air inlet pipeline 21 extending into the water tank 10 is higher than the highest water level of the water tank 10, so that water in the water tank 10 is prevented from being poured into the air inlet pipeline 21 through the upper part of the air inlet hole 210, and the normal use of the air inlet valve assembly 4 is ensured; the air inlet cover is convenient to process and easy to replace. It is of course not excluded that the air inlet opening 210 is provided directly at the end of the air inlet duct 21 extending into the water tank 10. The other end of the intake duct 21 communicates with the injection duct 20.

The intake valve assembly 4 includes a second plug 411, a first lever 412, a float 413, a weight 414, a pull cord 415, and a limit steel bar 416. That is, in the second embodiment, the above-described drain valve assembly of the eleventh aspect is employed, and the assembly relationship of the drain valve assembly in the toilet body 1 is as follows:

the spacing steel bar 416 is disposed inside the injection pipe 20 and has a vertical through hole formed therein. The first lever 412 is disposed in the intake duct 21; one end of the first lever 412 is provided with a second plug 411 and a weight 414, wherein the weight 414 is used for providing power for the first lever 412; the other end of the pull rope 415 is connected with one end of the pull rope 415, the other end of the pull rope 415 passes through a vertical through hole formed in the limit steel bar 416 and then stretches into the injection pipeline 20 to be connected with the floater 413, and the stress of the end provides resistance for the first lever 412; that is, the float 413 blocks the weight 414 to drive the first lever 412 to swing downwards, so that the second plug 411 seals the air inlet hole. In this embodiment, since the float 413 is placed in the pre-stored water in the injection pipe 20, in the second embodiment, the float 413 does not move upwards along with the rising of the water level in the injection pipe 20, i.e. the pull rope 415 is always in a tight state, so the resistance provided by the float 413 to the first lever 412 depends on the difference between the gravity of the float 413 and the buoyancy of the float, i.e. the lever resistance is approximately equal to the resistance generated by the float 413, wherein the dead weight of the pull rope 415 is negligible. The lever power mainly depends on the gravity of the weight 414, and the weight of the weight 414 is moderate, so that the problems of untimely blocking and excessive air input caused by too far distance between the second plug 411 and the air inlet 210 are avoided.

The second stopper 411 is configured to move upward or downward with respect to the lower end of the air intake hole 210 after being driven by the first lever 412 to block or open the lower end (toward the end of the injection duct 20) of the air intake hole 210. The vertical through hole of the limit steel bar 416 is used for limiting the pull rope 415 to move up and down in the same posture, so that the limit steel bar is prevented from swinging left and right in the moving process.

In the second embodiment, when the water level in the injection pipeline 20 is higher than the first water level set by the person, the buoyancy of the float 413 is larger, so that the weight 414 overcomes the resistance of the float 413 to drive the second plug 411 to open the air inlet 210; when the water level in the injection pipe 20 is lower than the first water level set by people, the buoyancy of the floater 413 is small, and the weight 414 cannot overcome the resistance of the floater 413, so that the second plug 411 can plug the air inlet 210. That is, the artificially set first water level is also the real-time water level in the injection duct 20 when the second plug 411 opens or closes the air intake hole 210.

In the second embodiment, the cleaning toilet is used as follows:

as shown in fig. 2, after the drain valve 30 is opened, the injection pipe 30 is filled with water; that is, the water level in the injection pipe 30 is higher than the first water level set by the person, the buoyancy force of the float 413 is larger, that is, the resistance of the float 413 relative to the weight 414 is reduced, the weight 414 can overcome the resistance of the float 413, and then the end of the first lever 412 provided with the weight 414 moves downwards to drive the second plug 411 provided thereon to open the air inlet 210 so as to open the air inlet pipe 21 to communicate with the atmosphere, and air is input into the injection pipe 20 through the air inlet 210. After the drain valve 30 is closed, an air barrier layer is formed between the upper side of the pre-stored water in the injection pipe 20 and the lower side of the drain valve 30 due to the continuous input of air into the injection pipe 20.

As shown in fig. 3, as the input air increases, the forming barrier air layer will push the pre-stored water in the injection pipe 20 to move; until the water level of the injection pipe 20 is lower than the first water level set by people, the buoyancy force born by the floater 413 is small, namely the resistance of the floater 413 relative to the weight 414 is increased, and the weight 414 cannot overcome the resistance of the floater 413, then one end of the first lever 412 provided with the floater 413 moves downwards, so that the other end provided with the weight 414 is reversely driven to lift, the second plug 411 is driven to block the air inlet hole 210, and the air inlet pipe 21 is closed to stop air inlet.

It is of course not excluded that the float 413 will move upwards as the water level in the injection conduit 20 rises, in which case the float 413 will move upwards as the water level rises to a first level set by man, so that the pull cord 415 is converted from a taut state to a slack state; at this time, the resistance provided by the float 413 to the first lever is 0, that is, the first lever 412 is only under the gravity of the weight 414 at this time, and then the end of the first lever 412 with the weight 414 moves downward due to the gravity of the weight 414, so as to drive the second plug 411 to open the air inlet. That is, in this case, when the water level in the injection pipe 20 is higher than the first water level set by the person, the buoyancy of the float 413 is larger, so that the weight 414 overcomes the resistance of the float 413 to drive the second plug 411 to open the air inlet 210; when the water level in the injection pipe 20 is lower than the first water level set by the person, the float 413 is less subject to buoyancy, and the weight 414 cannot overcome the resistance of the float 413, so that the second plug 411 seals the air inlet 210.

In the second embodiment, the above process forms closed loop control on the air inlet pipeline 21 according to the real-time water level in the injection pipeline 20, so as to ensure that the height of the formed isolation air layer is moderate, the pre-stored water amount in the injection pipeline 20 is not too small, the injection force in the next flushing is effectively ensured, and the effects of water saving and energy saving are achieved. And because of the existence of the isolation air layer, the pre-stored water can not pollute the purified water of the water tank 10 when the drain valve 30 is opened, so that the overall cleanliness of the toilet body 1 is ensured.

In the third embodiment, as shown in fig. 4 to 6:

in addition to the common features of the embodiments described above, in the third embodiment, as shown in fig. 4, the cleaning toilet further includes an air intake duct 21 and an air intake valve assembly 4. One end of the intake duct 21 communicates with the injection duct 20 and the other end extends into the tank 10 and communicates with the atmosphere when the intake valve assembly 4 is open.

Specifically, in the third embodiment, an air inlet cover is arranged at one end of the air inlet pipe 21 extending into the water tank 10, an air inlet hole 210 is arranged on the air inlet cover, and air can only enter the injection pipe 20 through the air inlet hole 210 on the premise that the injection pipe 20 is isolated from the brushing pipe; the air inlet cover is convenient to process and easy to replace. It is of course not excluded that the air inlet opening 210 is provided directly at the end of the air inlet duct 21 extending into the water tank 10. In the third embodiment, in order to save the space of the water tank 10 so that the water tank 10 is not set higher because the intake pipe 21 needs to extend out of the highest water level, one end of the intake pipe 21 is placed below the highest water level of the water tank 10, i.e., the end of the intake pipe 21 extending into the water tank 10 is lower than the highest water level of the water tank 10; furthermore, in order to avoid water in the water tank 10 from being poured from above the air inlet hole 210, the air inlet valve assembly 4 needs to control the opening and closing of the upper end of the air inlet hole 210, so as to ensure the subsequent normal use of the air inlet valve assembly 4. The other end of the intake duct 21 extends into and communicates with the injection duct 20.

The intake valve assembly 4 includes a second plug 411, a first lever 412, a float 413, a weight 414, a pull cord 415, a limit steel bar 416, a third plug 421, a second lever 422, and a second float 423. Specifically, the second plug 411, the first lever 412, the float 413, the weight 414, the pull cord 415, and the limit steel bar 416 in the third embodiment are all the same as those in the second embodiment, and the description thereof will not be repeated. The second plug 411 is used to close or open the communication between the lower end of the air intake hole 210 (the end near the injection duct 20) and the air intake duct 21. That is, in the third embodiment, the above-described drain valve assembly of the twelfth aspect is employed, and the assembly relationship of the drain valve assembly in the toilet body 1 is as follows:

the second lever 422 is disposed in the water tank 10 (i.e., disposed outside the air intake duct 21), one end of the second lever 422 adjacent to the air intake hole 210 is connected to the third plug 421, and the other end (the end opening the air intake hole 210) is connected to the second floating ball 423 to form a lever relationship. Specifically, the second floating ball 423 floats in the purified water in the water tank 10, and the second floating ball 423 moves down with the falling of the water level in the water tank 10 or moves up with the rising of the water level; the third stopper 421 is for moving upward or downward with respect to the upper end of the air intake hole 210 after being driven by the second lever 422 to open or close the upper end of the air intake hole 210 (the end toward the water tank 10) to the atmosphere.

In the third embodiment, when the water level in the injection pipeline 20 is higher than the first water level set by the person, the buoyancy of the float 413 is larger, so that the weight 414 overcomes the resistance of the float 413 to drive the second plug 411 to open the lower end of the air inlet 210; when the water level in the injection pipe 20 is lower than the first water level set by people, the buoyancy of the floater 413 is small, and the weight 414 cannot overcome the resistance of the floater 413, so that the second plug 411 seals the lower end of the air inlet 210. I.e. the first water level set by the person is the real-time water level in the injection duct 20 when the second plug 411 opens or closes the air inlet hole 210.

When the water level of the water tank 10 is reduced to a second water level set by people, the second floating ball 423 drives the third plug 421 to open the air inlet 210 through the second lever 422; when the water level of the water tank 10 rises to the second water level set by people, the second floating ball 423 drives the third plug 421 to block the air inlet 210 through the second lever 422. That is, the second water level set by the person is a real-time water level in the water tank 10 when the third plug 421 opens or closes the air inlet hole 210, and the second water level is higher than the water level when the drain valve 30 closes and lower than the sealing surface of the third plug 421 for sealing the air inlet hole 210.

In the third embodiment, the cleaning toilet is used as follows:

When the drain valve 30 is opened, the water level in the water tank 10 gradually drops, and the second floating ball 423 floating thereon moves downward as the water level in the water tank 10 drops; and the injection pipeline 20 is filled with water, that is, the water level in the injection pipeline 20 is higher than the first water level set by people, the buoyancy force borne by the floater 413 is larger, the weight 414 overcomes the resistance of the floater 413 to drive the second plug 411 to open the lower end of the air inlet 210, and the lower end of the air inlet 210 is communicated with the air inlet pipeline 21.

As shown in fig. 5, when the water level in the water tank 10 is lowered to the second water level set by the person, the second floating ball 423 provided at one end of the second lever 422 moves downward due to the lowering of the water level in the water tank 10, and the second lever 422 reversely drives the third stopper 421 provided at the other end thereof to lift up to open the air intake hole 210 due to the leverage, thereby opening the communication between the upper end of the air intake hole 210 and the atmosphere.

When the water level of the water tank 10 reaches the minimum water level, the drain valve 30 is closed, air is inputted into the injection pipe 20 through the air inlet hole 210, and the continuously inputted air forms an air barrier between the upper side of the pre-stored water and the lower side of the drain valve 30 for isolating the drain valve 30 from direct contact with the pre-stored water.

As shown in fig. 6, as the input air increases, the formed barrier air layer pushes the pre-stored water in the injection pipe 20 to move; until the water level of the injection pipe 20 is lower than the first water level set by the person, the buoyancy force borne by the float 413 is small, and the weight 414 cannot overcome the resistance of the float 413, so that the second plug 411 seals the communication between the lower end of the water inlet 210 and the air inlet pipe 21.

Meanwhile, the water level in the water tank 10 gradually rises due to the refilling, and the second floating ball 423 floating thereon also moves upward as the water level rises. When the water level in the water tank 10 rises to the second water level set by the person, the second floating ball 423 arranged at one end of the second lever 422 moves upwards due to the rising of the water level in the water tank 10, and the second lever 422 drives the third plug 421 arranged at the other end of the second lever 422 to push down to block the air inlet 210 due to leverage, so that the upper end of the air inlet 210 is closed to communicate with the atmosphere; until the water level in the tank 10 fills to a maximum level.

Specifically, the second water level manually set is higher than the water level when the drain valve is closed, so that the third plug 421 opens the upper end of the air inlet 210 before the drain valve 30 is closed, facilitating the subsequent air input; and the second water level is lower than the third plug 421 to close the sealing surface of the air inlet 210, so as to close the upper end of the air inlet 210 before the water level in the water tank 10 is higher than the sealing surface, thereby avoiding the water in the water tank 10 from being poured into the air inlet 210 and not affecting the normal use of the air inlet valve assembly 4.

Because the air intake speed of the air intake valve assembly 4 is faster than the speed of the water tank 10 for re-storing water, the second plug 411 seals the lower end of the air intake hole 210 before the water level of the water tank 10 returns to the second water level set by people, and also forms closed-loop control on the air intake pipe 21, so that the potential energy loss of the next injection flushing is avoided due to the excessively high height of the formed isolation air layer.

In the fourth embodiment, as shown in fig. 7:

in the fourth embodiment, the point of difference from the third embodiment is that the float 413 is replaced with the first float 403, and the pull rope 415 is replaced with the link 402; and a side of the air inlet pipe 21 facing the injection pipe 20 is provided with a limiting hole 211. The same arrangement is as in the third embodiment, and the description thereof will not be repeated. Preferably, the connecting rod 402 used in the fourth embodiment is a rigid connecting rod, and the first floating ball 403 is a hollow structure to increase the buoyancy force applied to the first floating ball.

Wherein, since the first floating ball 403 floats in the pre-stored water in the injection pipe 20, the position of the first floating ball 403 in the injection pipe 20 depends on the real-time water level in the injection pipe 20.

In the fourth embodiment, when the water level in the injection pipe 20 is higher than the first water level set by the person, the first floating ball 403 drives the connecting rod 402 to rise and drives the second plug 411 to open the air inlet 210 through the first lever 412; when the water level in the injection pipeline 20 is lower than the first water level set by people, the first floating ball 403 drives the connecting rod 402 to descend and drives the second plug 411 to seal the air inlet 210 through the first lever 412. I.e. the artificially set first water level is the real-time water level in the injection duct 20 when the second plug 411 opens or closes the air inlet hole 210.

Similarly, when the water level of the water tank 10 is reduced to the second water level set by the user, the second floating ball 423 drives the third plug 421 to open the air inlet 210 through the second lever 422; when the water level of the water tank 10 rises to the second water level set by people, the second floating ball 423 drives the third plug 421 to block the air inlet 210 through the second lever 422. That is, the second water level set by the person is a real-time water level in the water tank 10 when the third plug 421 opens or closes the air inlet hole 210, and the second water level is higher than the water level when the drain valve 30 closes and lower than the sealing surface of the third plug 421 for sealing the air inlet hole 210.

In a fourth embodiment, the cleaning toilet is used as follows:

when the drain valve 30 is opened, the water level in the water tank 10 gradually drops, and the second floating ball 423 floating thereon moves downward as the water level in the water tank 10 drops; and the injection pipe 20 is filled with water, that is, the water level in the injection pipe 20 is higher than the first water level set by the person, the first floating ball 403 drives the connecting rod 402 to rise, and the first lever 412 reversely drives the second plug 411 at the other end of the first lever to move downwards relative to the air inlet pipe 21 due to leverage, so as to open the communication between the lower end of the air inlet hole 210 and the air inlet pipe 21.

When the water level in the water tank 10 is lowered to the second water level set by the operator, the end of the second lever 422 provided with the second floating ball 423 is moved downward due to the lowering of the water level, and the second lever 422 reversely drives the third plug 421 provided at the other end thereof to lift up to open the air intake hole 210 due to the leverage, thereby opening the communication between the upper end of the air intake hole 210 and the atmosphere.

As the input air increases, the forming barrier air layer will push the pre-stored water within the injection pipe 20 to move away; when the water level of the injection pipe 20 is lower than the first water level set by the person, the first floating ball 403 drives the connecting rod 402 to descend, and the first lever 412 drives the second plug 411 disposed at the other end of the first lever to move upwards relative to the air intake pipe 21 due to leverage, so that the second plug 211 plugs the communication between the lower end of the air intake hole 210 and the air intake pipe 21.

In summary, the first to fourth embodiments are described above, in which the intake valve assembly 4 opens the intake duct 21 when the water level in the injection duct 20 is higher than the human-set water level, and closes the intake duct 21 when the water level in the injection duct 20 is lower than the human-set water level. The spray duct 20 and the scrubbing duct are both in an isolated state when the drain valve 30 is closed to ensure that pre-stored water is stored in the spray duct 21, and air can be input into the spray duct 21 only through the air inlet 210.

In embodiment five, as shown in fig. 8 and 9:

an air inlet cover is arranged at one end of the air inlet pipeline 21 extending into the water tank 10, an air inlet hole 210 is arranged on the air inlet cover, and on the premise that the injection pipeline 20 is isolated from the brushing pipeline, air can only enter the injection pipeline 20 through the air inlet hole 210; the air inlet cover is convenient to process and easy to replace. It is of course not excluded that the air inlet opening 210 is provided directly at the end of the air inlet duct 21 extending into the water tank 10. In the fifth embodiment, since the air inlet pipe 21 is lower than the highest water level of the water tank 10, in order to avoid water in the water tank 10 from filling from above the air inlet 210, the air inlet valve assembly 4 needs to be controlled by opening and closing the upper end of the air inlet 210 to ensure the subsequent normal use of the air inlet valve assembly 4. The other end of the intake duct 21 communicates with the injection duct 21.

The intake valve assembly 4 includes a third plug 421, a second lever 422, and a second float 423. That is, in the fifth embodiment, the above-described drain valve assembly of the thirteenth aspect is employed, and the assembly relationship of the drain valve assembly in the toilet body 1 is as follows:

the second lever 422 is disposed in the water tank 10, one end of the second lever 422 close to the air inlet pipe 20 is connected to the third plug 421, and the other end is connected to the second floating ball 423 to form a lever relationship. Specifically, the second floating ball 423 floats in the purified water in the water tank 10, and the second floating ball 423 moves down with the falling of the water level in the water tank 10 or moves up with the rising of the water level; the third stopper 421 is for moving upward or downward with respect to the upper end of the air intake hole 210 after being driven by the second lever 422 to open or close the upper end of the air intake hole 210 (the end toward the water tank 10) to the atmosphere.

Specifically, in the fifth embodiment, when the water level of the water tank 10 is reduced to the second water level set by the user, the second floating ball 423 drives the third plug 421 to open the air inlet 210 through the second lever 422; until the water level in the water tank is refilled and rises to the second water level set by people, the second floating ball 423 drives the third plug 421 to plug the air inlet 210; when the third plug 421 seals the air inlet hole 210, the water level in the injection pipe 20 is higher than the water seal surface. The second water level set by man is the real-time water level in the water tank 10 when the third plug 421 opens or closes the air inlet hole 210.

In the fifth embodiment, the cleaning toilet is used as follows:

as shown in fig. 8 (a), when the drain valve 30 is closed, the water tank 10 is at the highest water level, the third plug 421 closes the upper end of the air intake hole 210, and the air intake duct 21 is in a closed state.

As shown in fig. 8 (B), when the water discharge valve 30 is opened, the water level in the water tank 10 gradually decreases, and the second floating ball 423 floating thereon moves downward as the water level in the water tank 10 decreases.

When the water level in the water tank 10 is lowered to the second water level set by the operator, the second floating ball 423 provided at one end of the second lever 422 moves downward due to the lowering of the water level in the water tank 10, and the second lever 422 reversely drives the third stopper 421 provided at the other end thereof to lift up to open the air intake hole 210 due to the leverage, thereby opening the air intake hole 210 to the atmosphere.

After the third plug 421 opens the air inlet hole, the drain valve 30 is closed to isolate the spray pipe 20 from the brushing pipe, so that the pre-stored water can be stored in the spray pipe 20. During the time when the intake duct 21 is open to the atmosphere, air can only enter the injection duct from the intake aperture 210 to form an insulating air layer.

As shown in fig. 9 (C), during the closing of the drain valve 30, the water level in the water tank 10 gradually rises due to the refilling, and the second float 413 floating thereon also moves upward as the water level rises.

As shown in fig. 9 (D), when the water level in the water tank 10 rises to a second water level set by a person, the second floating ball 423 provided at one end of the second lever 422 moves upward due to the rising of the water level in the water tank 10, and the second lever 422 reversely drives the third plug 421 provided at the other end thereof to push down due to the leverage to close the air intake hole 210, thereby closing the communication between the air intake hole 210 and the atmosphere; until the water level in the tank 10 fills to a maximum level.

When the third plug 421 plugs the air inlet hole 210, the water level in the injection pipeline 20 is higher than the water sealing surface, which limits the water level of the water tank 10 after the air inlet valve assembly 4 is closed, so that the second water level set by people is ensured not to be too high, so that the air outlet valve assembly 4 is closed too late, the input air amount is too much, the pre-stored water in the injection pipeline 20 is insufficient, and the water and energy saving effect cannot be achieved. Further, the pre-stored water stored in the injection pipeline 20 has a liquid level difference with the water sealing surface, so as to improve the impact effect of the injection water flow.

In summary, in the fifth embodiment, the intake valve assembly 4 opens the intake duct 21 when the water level in the water tank 10 decreases to the human-set water level, and closes the intake duct 21 when the water level in the water tank 10 increases to the human-set water level. The spray duct 20 and the scrubbing duct are both in an isolated state when the drain valve 30 is closed to ensure that pre-stored water is stored in the spray duct 21, and air can be input into the spray duct 21 only through the air inlet 210.

In summary, the first to fifth embodiments provide a clean toilet capable of storing pre-stored water higher than the water sealing surface in the injection pipeline 20, so that when the drain valve 30 is opened, the pre-stored water can be directly flushed into the injection port, thereby saving water and energy; but also can isolate the pre-stored water in the injection pipeline 20 from directly contacting with the drain valve 30, so as to avoid the water source pollution in the water tank 10 and ensure the cleanliness of the flushing water flow.

The foregoing description of the embodiments and description is presented to illustrate the scope of the invention, but is not to be construed as limiting the scope of the invention. Modifications, equivalents, and other improvements to the embodiments of the invention or portions of the features disclosed herein, as may occur to persons skilled in the art upon use of the invention or the teachings of the embodiments, are intended to be included within the scope of the invention, as may be desired by persons skilled in the art from a logical analysis, reasoning, or limited testing, in combination with the common general knowledge and/or knowledge of the prior art.

Claims

1. A cleaning closestool comprises a water tank, a spraying pipeline, a brushing pipeline and a drain valve; the device is characterized by also comprising an air inlet pipeline and an air inlet valve assembly; one end of the air inlet pipeline is communicated with the injection pipeline, and the other end of the air inlet pipeline extends into the water tank and is communicated with the atmosphere when the air inlet valve assembly is opened; the air inlet valve component is opened when the water level in the injection pipeline is higher than the manually set water level and is closed when the water level in the injection pipeline is lower than the manually set water level; the spray pipeline is isolated from the brushing pipeline when the drain valve is closed.

2. The cleaning toilet according to claim 1, wherein the air inlet pipe extends into the water tank to a position higher than the highest water level of the water tank, and is provided with an air inlet hole; the air inlet valve assembly comprises a first floating ball, a connecting rod and a first plug, and the first floating ball floats in water in the injection pipeline; one end of the connecting rod is connected with the first floating ball, and the other end of the connecting rod penetrates through the air inlet hole and then is connected with the first plug; the first plug is used for plugging or opening the air inlet;

when the water level in the injection pipeline is lower than or equal to a first water level set by people, the first floating ball is at the lowest position, and the first floating ball drives the first plug to plug the air inlet hole through the connecting rod;

When the water level in the injection pipeline is higher than a first water level set by people, the first floating ball is higher than the lowest position, and the first floating ball drives the first plug to open the air inlet hole through the connecting rod.

3. The cleaning toilet according to claim 1, wherein the air inlet pipe extends into the water tank to a position higher than the highest water level of the water tank, and is provided with an air inlet hole; the air inlet valve assembly comprises a second plug, a first lever, a heavy object, a pull rope and a floater; the second plug is used for plugging or opening the air inlet; one end of the first lever is provided with a second plug and a weight, the other end of the first lever is connected with one end of a pull rope, and the other end of the pull rope is connected with a floater; the floater is arranged in the water in the injection pipeline;

when the water level in the injection pipeline is higher than the first water level set by people, the buoyancy of the floater is larger, so that the weight overcomes the resistance of the floater to drive the second plug to open the air inlet;

when the water level in the injection pipeline is lower than the first water level set by people, the buoyancy force born by the floater is small, and the weight can not overcome the resistance of the floater, so that the second plug can plug the air inlet hole.

4. The cleaning toilet according to claim 1, wherein the air inlet pipe is provided with an air inlet hole at one end extending into the water tank below the highest water level of the water tank; the air inlet valve assembly comprises a third plug, a second lever, a second floating ball, a second plug, a first lever, a heavy object, a pull rope and a floater;

The third plug is used for plugging or opening the communication between the air inlet and the atmosphere, one end of the second lever is connected with the third plug, the other end of the second lever is connected with the second floating ball, and the second floating ball floats in water in the water tank;

the second plug is used for plugging or opening the air inlet; one end of the first lever is provided with a second plug and a weight, the other end of the first lever is connected with one end of a pull rope, and the other end of the pull rope is connected with a floater; the floater is arranged in the water in the injection pipeline;

when the water level in the injection pipeline is higher than the first water level set by people, the buoyancy of the floater is larger, so that the weight overcomes the resistance of the floater to drive the second plug to open the air inlet; when the water level in the injection pipeline is lower than a first water level set by people, the buoyancy force born by the floater is small, and the weight can not overcome the resistance of the floater, so that the second plug can plug the air inlet hole;

when the water level of the water tank is reduced to a second water level set by people, the second floating ball drives the third plug to open the air inlet hole through the second lever; when the water level of the water tank rises to a second water level set by people, the second floating ball drives the third plug to block the air inlet hole through the second lever;

The second water level is higher than the water level when the drain valve is closed, and is lower than the blocking surface of the third plug for blocking the air inlet hole.

5. The cleaning toilet according to claim 1, wherein the air inlet pipe is provided with an air inlet hole at one end extending into the water tank below the highest water level of the water tank; the air inlet valve assembly comprises a third plug, a second lever, a second floating ball, a second plug, a first lever, a connecting rod and a first floating ball;

the second plug is used for blocking or opening the communication between the air inlet hole and the air inlet pipeline, one end of the first lever is connected with the second plug, the other end of the first lever is connected with the first floating ball through the connecting rod, and the first floating ball floats in water in the injection pipeline;

when the water level in the injection pipeline is higher than a first water level set by people, the first floating ball drives the connecting rod to ascend and drives the second plug to open the air inlet through the first lever; when the water level in the injection pipeline is lower than a first water level set by people, the first floating ball drives the connecting rod to descend and drives the second plug to block the air inlet through the first lever;

6. A cleaning toilet according to any one of claims 2 or 5, wherein a limiting hole is provided in a side of the air inlet pipe facing the jet pipe, and one end of the connecting rod extending into the air inlet pipe penetrates through the limiting hole and is connected to the first floating ball.

7. A cleaning toilet according to any one of claims 3 or 4, wherein the air inlet valve assembly further comprises a spacing steel bar arranged in the jet pipe, the spacing steel bar is provided with a vertical through hole, and one end of the pull rope extending into the jet pipe penetrates through the vertical through hole and is connected with the float.

8. The cleaning closestool comprises a water tank, an injection pipeline, a brushing pipeline, a drain valve, an air inlet pipeline and an air inlet valve assembly; one end of the air inlet pipeline is communicated with the injection pipeline, and the other end of the air inlet pipeline extends into the water tank and is communicated with the atmosphere when the air inlet valve assembly is opened; the air inlet valve component is opened when the water level in the water tank is reduced to the manually set water level and is closed when the water level in the water tank is increased to the manually set water level; when the air inlet valve component is closed, the water level in the injection pipeline is higher than the water sealing surface; the spray pipeline is isolated from the brushing pipeline when the drain valve is closed.

9. The cleaning toilet of claim 8, wherein the air inlet pipe extends into the water tank at an end lower than the highest water level of the water tank, and is provided with an air inlet hole; the air inlet valve assembly comprises a third plug, a second lever and a second floating ball; the third plug is used for plugging or opening the air inlet to be communicated with the atmosphere; one end of the second lever is connected with the third plug, the other end of the second lever is connected with the second floating ball, and the second floating ball floats in water in the water tank;

when the water level of the water tank is reduced to a second water level set by people, the second floating ball drives the third plug to open the air inlet hole through the second lever;

until the water tank is refilled, the water level in the water tank is increased to a second water level set by people, and the second floating ball drives the third plug to block the air inlet hole;

when the third plug plugs the air inlet, the water level in the injection pipeline is higher than the water seal surface.

10. A cleaning toilet according to any one of claims 1-5 and 8-9, wherein an air inlet cover is provided at an end of the air inlet pipe extending into the water tank, and the air inlet cover is provided with an air inlet hole.

11. The water draining valve assembly is characterized by comprising a water draining valve, an air inlet pipe and an air inlet valve assembly, wherein one end of the air inlet pipe is communicated with the lower part of the water draining valve, and an air inlet hole is formed in the other end of the air inlet pipe; the air inlet valve assembly comprises a second plug, a first lever, a heavy object, a pull rope and a floater; the second plug is used for plugging or opening the air inlet; the first lever is arranged in the air inlet pipe; one end of the first lever is provided with a second plug and a weight, the other end of the first lever is connected with one end of a pull rope, and the other end of the pull rope is connected with a floater.

12. A drain valve assembly as defined in claim 11, further comprising a third plug, a second lever, and a second float; the third plug is used for plugging or opening the upper end of the air inlet to be communicated with the atmosphere; the second lever is arranged outside the air inlet pipe; the second lever is connected with the third plug, and the other end of the second lever is connected with the second floating ball.

13. The water draining valve assembly is characterized by comprising a water draining valve, an air inlet pipe and an air inlet valve assembly, wherein one end of the air inlet pipe is communicated with the lower part of the water draining valve, and an air inlet hole is formed in the other end of the air inlet pipe; the air inlet valve assembly comprises a third plug, a second lever and a second floating ball; the third plug is used for plugging or opening the air inlet to be communicated with the atmosphere; the second lever is arranged outside the air inlet pipe; the second lever is connected with the third plug, and the other end of the second lever is connected with the second floating ball.