A pneumatic flushing valve and a sunken side-button pneumatically controlled toilet

Abstract

The present invention discloses a pneumatic flush valve and a sunken side-button pneumatically controlled toilet, belonging to the field of sanitary ware technology. It includes a flush valve body and a pneumatic part. The flush valve body includes a lower valve head and an upper housing connected to each other, and a pneumatic lifting mechanism and a water port opening and closing assembly arranged on and connected to the upper housing. In the present invention, a pneumatic lifting mechanism is provided on the upper housing, and the moving end of the pneumatic lifting mechanism is directly connected to the vertically moving valve rod. In this way, the pneumatic lifting mechanism directly drives the vertically moving valve rod without other intermediate structures. This not only simplifies the valve body structure but also improves the pneumatic driving effect, avoiding the problems of excessive gas volume and large structural volume in the existing pneumatic valve bodies. Furthermore, it creates favorable conditions for reducing the structural volume of the water tank, enabling the realization of a sunken water tank.

Description

Technical Field

[0001] The present invention relates to the technical field of sanitary wares, and particularly to a pneumatic flush valve and a sunken side-button pneumatically controlled toilet bowl. Background Art

[0002] A flush valve is a switching device that can be controlled to flush excreta to keep the toilet clean and tidy.

[0003] The toilet flush devices commonly used in daily life mainly adopt the following several flushing methods: First, the traditional manual flush valve. When a person sits in front and uses it, they need to turn around and press the button forcefully, and it is impossible to open the drain valve in time to discharge excreta and odors conveniently; moreover, it needs to be pressed by hand, and it is impossible to avoid cross-infection caused by bacteria on the button. Second, the inductive flush valve mostly uses a solenoid valve to control the flushing system and uses the self-pressure of external water inlet to push the opening of the flush valve. Although it solves the problems of inconvenient use and hygiene, its structure is complex, the cost is high, and there is often a situation where the water valve cannot be opened due to too low water pressure, and it is easily damaged by voltage impact, with poor stability, bringing great inconvenience to maintenance and use.

[0004] Therefore, there is an urgent need to provide a flush valve with a simple structure, convenient use, and capable of installing a start switch on the side wall of the toilet seat ring. Summary of the Invention

[0005] The purpose of the present invention is to provide, in view of the defects and deficiencies of the prior art, a pneumatic flush valve capable of installing a start switch on the side wall of the toilet seat ring and having a good siphon effect, and a sunken side-button pneumatically controlled toilet bowl.

[0006] To achieve the above purpose, the present invention provides the following solution: The present invention provides a pneumatic flush valve, which includes a flush valve body and a pneumatic part. The flush valve body includes a lower valve head and an upper shell connected to each other, and a pneumatic lifting mechanism and a water port opening and closing assembly arranged on and connected to the upper shell. The bottom of the lower valve head is connected to the drain port in the water tank. The air inlet of the pneumatic lifting mechanism is connected to the pneumatic part through a pipeline. The water port opening and closing assembly includes a piston, a vertically moving valve rod, and a floating body structure slidably sleeved on the vertically moving valve rod. The piston is cooperatively connected to the water outlet of the lower valve head. The upper part of the vertically moving valve rod extends out of the upper shell and is connected to the moving end of the pneumatic lifting mechanism. The floating body structure is located inside the upper shell.

[0007] Preferably, the pneumatic part includes an inductive type and / or a manual type. The inductive pneumatic part includes an inductive switch, an air pump, and an air release valve that are electrically connected. The air outlet end of the air pump is respectively communicated with the pneumatic lifting mechanism and the air release valve. The manual pneumatic part includes a push switch and an airbag that are connected. The air outlet end of the airbag is communicated with the pneumatic lifting mechanism. A return spring is provided in the push switch, and the push switch returns to its original position through the spring after pressing and squeezing the airbag.

[0008] Preferably, the inductive switch and the push switch are respectively arranged on the side wall of the toilet seat. And when both the inductive switch and the push switch exist, they are respectively arranged on the left and right side walls of the toilet seat.

[0009] Preferably, the pneumatic lifting mechanism includes a first pneumatic chamber and a second pneumatic chamber. The air inlet end of the first pneumatic chamber is communicated with the airbag through a pipeline. The second pneumatic chamber is communicated with the air pump through a pipeline. And both the first pneumatic chamber and the second pneumatic chamber are connected to the upper part of the vertically moving valve stem.

[0010] Preferably, a telescopic overflow pipe is provided in the middle of the upper shell, and the overflow pipe is communicated with the drain outlet.

[0011] Preferably, the vertically moving valve stem is of a hollow structure. The telescopic overflow pipe is arranged at the top end of the vertically moving valve stem, and the overflow pipe is communicated with the drain outlet through the hollow structure.

[0012] Preferably, the lower valve head includes a base, a connecting section, and an extending section. The water outlet is provided on the base. The connecting section and the extending section are respectively arranged on the outer edge and the inner edge at the upper and lower ends of the base. The height of the base is 10 - 15 mm. The connecting section is detachably connected to the upper shell. A water inlet is provided on the side wall of the connecting section. The extending section extends into the drain outlet, and a sealing ring is provided on the outer wall of the extending section.

[0013] Preferably, a water replenishing port is provided on the base. The water replenishing port is communicated with the water outlet, and the water replenishing port is communicated with a water replenishing structure.

[0014] Preferably, at least two fixing structures for clamping with the drain outlet are connected to the inner wall of the extending section. The fixing structure includes a locking screw and a single-side tightening part that are connected.

[0015] The present invention also provides a sunken side-switch air-controlled toilet using the pneumatic flushing valve for a toilet described above. The top surface height of the water tank of the toilet is not higher than the height of the toilet lid.

[0016] The present invention has achieved the following beneficial effects compared with the prior art:

[0017] 1. In the pneumatic flushing valve provided by the present invention, a pneumatic lifting mechanism is arranged on the upper shell, and the moving end of the pneumatic lifting mechanism is directly connected to the vertically moving valve rod. In this way, the pneumatic lifting mechanism directly drives the vertically moving valve rod without other intermediate structures. This not only simplifies the valve body structure but also improves the pneumatic driving effect, avoiding the problems of excessive gas volume and large structural volume in existing pneumatic valve bodies. Furthermore, it creates favorable conditions for reducing the structural volume of the water tank, enabling the realization of a sunken water tank;

[0018] 2. In the pneumatic flushing valve provided by the present invention, the pneumatic lifting mechanism is connected to an inductive and / or manual pneumatic part, enabling the pneumatic lifting mechanism to achieve inductive pneumatic control and manual pneumatic control. Further, by arranging a first pneumatic chamber and a second pneumatic chamber on the pneumatic lifting mechanism, the inductive pneumatic part and the manual pneumatic part control the pneumatic lifting mechanism through different pneumatic chambers, improving the control accuracy;

[0019] 3. In the pneumatic flushing valve provided by the present invention, a telescopic overflow pipe is arranged at the top of the hollow vertically moving valve rod, enabling the overflow function to be concentrated on the vertically moving valve rod while achieving the technical purpose of adjustable overflow height;

[0020] 4. In the pneumatic flushing valve provided by the present invention, by setting the height of the base to 10 - 15 mm, the height of the water flow through the water outlet on the base is reduced, enabling the water level in the water tank to be drained more thoroughly. Further, by arranging a water replenishing method in the base that is connected to the water outlet, the water flowing through the water outlet at the base by the siphon effect of the water flow includes not only the water already stored in the water tank but also the newly entered water directly entering the water outlet through the water replenishing port, thereby further increasing the siphon drainage effect. Furthermore, by adopting the method of two single-side tightening parts at the extending section or the bottom of the base, the lower valve head is fixedly connected to the drainage port of the water tank by single-side tightening, avoiding the problems of large volume and large flow resistance of the cross or three-way (anchor type) structure for fixing the existing valve head, which increases the drainage resistance of the valve head, and thus further enhancing the earlier instantaneous siphon drainage effect.

[0021] 5. In the sunken side-switch air-controlled toilet provided by the present invention, by setting the top surface height of the water tank not higher than the height of the toilet lid, a sunken storage water tank is formed, reducing the volume of the toilet and greatly reducing the flushing noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0023] Figure 1 Schematic diagram of the overall structure of the pneumatic flushing valve of the present invention;

[0024] Figure 2 For Figure 1 Schematic diagram of the structure of the lower valve head;

[0025] Figure 3 For Figure 1 Schematic diagram of the structure of the water inlet opening and closing assembly;

[0026] Figure 3-1 For Figure 3 Schematic diagram of the connection structure between the middle piston and the vertical moving valve rod;

[0027] Figure 3-2 For Figure 3 Schematic diagram of the structure of the floating body;

[0028] Figure 4 For Figure 1 Schematic diagram of the structure of the pneumatic lifting mechanism;

[0029] Figure 5 For Figure 1 Cross-sectional view of the connection structure of the lower valve head, pneumatic lifting mechanism and floating body structure;

[0030] Figure 6 Schematic diagram of the structure of the manual pneumatic part;

[0031] Figure 7 Schematic diagram of the structure of the connecting piece;

[0032] Figure 8 Schematic diagram of the structure of the sunken side button pneumatic control toilet;

[0033] Figure 9 Schematic diagram of the drive connection of the toilet;

[0034] Among them, 1 is the flush valve body, 2 is the pneumatic part, 3 is the lower valve head, 4 is the upper housing, 5 is the piston, 6 is the vertically moving valve stem, 7 is the floating body structure, 8 is the water outlet, 9 is the induction switch, 10 is the air pump, 11 is the pneumatic housing, 12 is the push switch, 13 is the pneumatic lifting mechanism, 14 is the first pneumatic chamber, 15 is the second pneumatic chamber, 16 is the overflow pipe, 17 is the base, 18 is the connecting section, 19 is the extending section, 20 is the water inlet, 21 is the water replenishing port, 22 is the water replenishing structure, 23 is the locking screw, 24 is the single-sided pressing member, 25 is the water tank, 26 is the toilet seat, and 27 is the connecting member. Specific embodiments

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0036] The purpose of the present invention is to provide a pneumatic flush valve that can be installed with a start switch on the side wall of the toilet seat and has a good siphon effect, as well as a sunken side button pneumatic control toilet, aiming at the defects and deficiencies of the prior art.

[0037] To make the above objects, features, and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0038] As Figure 1-9As shown in the figure, the present invention provides a pneumatic flushing valve, which includes a flushing valve body 1 and a pneumatic part 2 installed in a water tank 25. The flushing valve body 1 includes a lower valve head 3 and an upper housing 4 connected to each other, and a pneumatic lifting mechanism 13 and a water port opening and closing assembly arranged on and connected to the upper housing 4. The bottom of the lower valve head 3 is connected to the drain port in the water tank 25. The lower valve head 3 installs the entire flushing valve body 1 in the drain port of the water tank 25. The air inlet of the pneumatic lifting mechanism 13 is connected to the pneumatic part 2 through a pipeline. The pipeline is preferably a pipeline made of soft material. The water port opening and closing assembly includes a piston 5, a vertically moving valve rod 6, and a floating body structure 7 slidably sleeved on the vertically moving valve rod 6. The piston 5 is cooperatively connected with the water outlet 8 of the lower valve head 3 to close the water outlet 8. In order to be connected to the pneumatic lifting mechanism 13, the upper part of the vertically moving valve rod 6 extends out of the upper housing 4 and is connected to the moving end of the pneumatic lifting mechanism 13. The pneumatic lifting mechanism 13 lifts the vertically moving valve rod 6 and the piston 5 upward under the driving action of the pneumatic part 2. Subsequently, the water stored in the water tank 25 flows through the lower valve head 3 and the drain port into the toilet under the action of siphon. Finally, the vertically moving valve rod 6 and the piston 5 fall again to close the water outlet 8. The floating body structure 7 has the same function as the floating body in the existing flushing valve, and will not be specifically explained here. The pneumatic lifting mechanism 13 represents a structure that lifts and lowers through gas. The driving source of the pneumatic lifting mechanism 13 can be a piston, an airbag, or a small cylinder, etc., as long as it can achieve lifting and lowering through starting. Of course, in order to realize the manual operation below, a piston or airbag type mechanism is preferably used. The floating body structure 7 is located inside the upper housing 4. In the present invention, a pneumatic lifting mechanism 13 is arranged on the upper housing 4, and the moving end of the pneumatic lifting mechanism 13 is directly connected to the vertically moving valve rod 6, so that the pneumatic lifting mechanism 13 directly drives the vertically moving valve rod 6 without other intermediate structures. For example, in the flushing valve with the application number 201710045059.6, the infrared induction pneumatic structure is used to replace the manual operation, and the flushing switch is pressed downward. This not only simplifies the valve body structure, but also improves the pneumatic driving effect, avoids the problems of excessive gas volume and large structural volume in the existing pneumatic valve body, and further creates favorable conditions for reducing the structural volume of the water tank 25, enabling the realization of the sunken water tank 25.

[0039] In the present invention, the pneumatic part 2 includes an induction type and / or a manual type. The induction type pneumatic part includes an induction switch 9, an air pump 10, and a gas discharge valve that are electrically connected. The air outlet end of the air pump 10 is respectively connected to the pneumatic lifting mechanism 13 and the gas discharge valve. The manual type pneumatic part includes a pressing switch 12 and an airbag installed inside and connected to the pneumatic housing 11. The air outlet end of the airbag is connected to the air inlet end of the pneumatic lifting mechanism 13. That is, by connecting the pneumatic lifting mechanism 13 with the induction type and / or manual type pneumatic part 2, the pneumatic lifting mechanism 13 realizes induction pneumatic control and manual pneumatic control.

[0040] In order to integrate the manual and automatic modes into the toilet at the same time, in the present invention, the induction switch 9 and the push switch 12 are respectively arranged on the side wall of the toilet seat ring; and when the induction switch 9 and the push switch 12 exist at the same time, they are respectively arranged on the left and right side walls of the toilet seat ring.

[0041] In the present invention, the pneumatic lifting mechanism 13 includes a first pneumatic chamber 14 and a second pneumatic chamber 15. The air inlet end of the first pneumatic chamber 14 is communicated with the airbag through a pipeline, and the second pneumatic chamber 15 is communicated with the air pump 10 through a pipeline; and the moving ends of the first pneumatic chamber 14 and the second pneumatic chamber 15 are both connected to the upper part of the vertical moving valve rod 6 through a connecting member 27. The connecting member 27 can be independent or integral. As Figure 7 shown, for the convenience of assembly, it is preferably an integral structure; that is, by arranging the first pneumatic chamber 14 and the second pneumatic chamber 15 on the pneumatic lifting mechanism 13, the induction pneumatic part and the manual pneumatic part control the pneumatic lifting mechanism 13 through different pneumatic chambers, improving the control accuracy.

[0042] In order to avoid the problem of too high water level in the water tank 25, an overflow pipe 16 is arranged on the upper shell 4 in the present invention, and the overflow pipe 16 is communicated with the drain outlet. Further, for optimizing the structure, the vertical moving valve rod 6 in the present invention is a hollow structure, and the overflow pipe 16 is telescopically arranged at the top of the vertical moving valve rod 6, and the overflow pipe 16 is communicated with the drain outlet through the hollow structure; that is, by arranging the telescopic overflow pipe 16 at the top of the hollow vertical moving valve rod 6, while concentrating the overflow function on the vertical moving valve rod 6, the technical purpose of adjustable overflow height is achieved. The telescopic overflow pipe 16 can adopt the matching structure of the chute between two sleeves to realize the telescopic function.

[0043] In the present invention, the lower valve head 3 includes a base 17, a connecting section 18 and an extending section 19. A water outlet 8 is opened on the base 17. The connecting section 18 and the extending section 19 are respectively arranged at the outer edge and the inner edge of the upper and lower ends of the base 17. The height of the base 17 is 10-15 mm. The connecting section 18 is detachably connected to the upper shell 4. A water inlet 20 is opened on the side wall of the connecting section 18. The extending section 19 extends into the drain outlet, and a sealing ring is arranged on the outer wall of the extending section 19; that is, by setting the height of the base 17 to 10-15 mm, the travel of the water flow through the water outlet 8 on the base 17 is shortened, the resistance of the base 17 to the water flow is reduced, and thus the siphon drainage effect is enhanced.

[0044] Furthermore, in the present invention, a water replenishing port 21 is provided on the base 17. The water replenishing port 21 is communicated with the water outlet 8 and is also communicated with a water replenishing structure 22. The water replenishing structure 22 can be an inlet valve in the prior art, with the water replenishing port 21 communicated with the inlet valve. Of course, preferably, the inlet valve still has an independent water inlet function at this time, or it can also be a separate water inlet pipe communicated with a water source. That is, by adopting the method of providing a water replenishing port 21 on the base 17 that is communicated with the water outlet 8, the water flowing through the water outlet 8 of the base 17 by siphon action not only includes the water already stored in the water tank 25, but also includes the newly entered water directly entering the water outlet 8 through the water replenishing port 21, thereby further enhancing the siphon drainage effect.

[0045] Furthermore, in the present invention, at least two fixing structures for engaging with the drain port are connected to the inner wall of the extending section 19. The fixing structures include a locking screw 23 and a unilateral pressing member 24 connected to each other. That is, by adopting the method of providing at least two unilateral pressing members 24 on the extending section 19 or at the bottom of the base 17, the lower valve head 3 is fixedly connected to the drain port of the water tank 25 by unilateral pressing, avoiding the problem that the volume of the fixing structure of the lower valve head 3 is too large, resulting in an increase in drainage resistance, such as the anchor structure in the prior art, thereby further enhancing the siphon drainage effect.

[0046] The present invention also provides an in-sink side-switch pneumatic flush toilet using the above pneumatic flush valve for a toilet, and the top surface height of the water tank 25 of the toilet is not higher than the height of the toilet lid 26.

[0047] In the present invention, specific examples are used to illustrate the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention. At the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. An air-operated flushing valve for a toilet, characterized in that, It includes a flush valve body and a pneumatic part. The flush valve body includes a lower valve head and an upper housing connected to each other, and a pneumatic lifting mechanism and a water outlet opening and closing assembly which are arranged on and connected to the upper housing. The bottom of the lower valve head is connected to the drain outlet in the water tank. The air inlet of the pneumatic lifting mechanism is communicated with the pneumatic part through a pipeline. The water outlet opening and closing assembly includes a piston, a vertically moving valve rod, and a floating body structure slidably sleeved on the vertically moving valve rod. The piston is cooperatively connected with the water outlet of the lower valve head. The upper part of the vertically moving valve rod extends out of the upper housing and is connected to the moving end of the pneumatic lifting mechanism. The floating body structure is located inside the upper housing. The moving end of the pneumatic lifting mechanism is directly connected to the vertically moving valve rod, so that the pneumatic lifting mechanism directly drives the vertically moving valve rod without other intermediate structures; The lower valve head includes a base, a connecting section, and an extending section. The base is provided with the water outlet. The connecting section and the extending section are respectively arranged at the outer edge and the inner edge of the upper and lower ends of the base. The height of the base is 10 - 15 mm. The connecting section is detachably connected to the upper housing. The side wall of the connecting section is provided with a water inlet. The extending section extends into the drain outlet, and a sealing ring is arranged on the outer wall of the extending section; A water replenishing port is arranged on the base. The water replenishing port is communicated with the water outlet and is also communicated with a water replenishing structure; The pneumatic part includes an induction type and a manual type. The induction type pneumatic part includes an induction switch, an air pump, and an air release valve which are electrically connected. The air outlet end of the air pump is communicated with the pneumatic lifting mechanism and the air release valve respectively. The manual type pneumatic part includes a push switch and an air bag which are connected to each other. The air outlet end of the air bag is communicated with the pneumatic lifting mechanism; An overflow pipe is arranged on the upper housing. The overflow pipe is communicated with the drain outlet; The vertically moving valve rod is of a hollow structure. The overflow pipe is telescopically arranged at the top end of the vertically moving valve rod, and the overflow pipe is communicated with the drain outlet through the hollow structure; At least two fixing structures for clamping with the drain outlet are connected to the inner wall of the extending section. The fixing structure includes a locking screw and a unilateral pressing member which are connected to each other.

2. The pneumatic flushing valve for a toilet according to claim 1, characterized in that, The induction switch and the push switch are respectively arranged on the side wall of the toilet seat; 3. The pneumatic flushing valve for a toilet according to claim 2, characterized in that, The pneumatic lifting mechanism includes a first pneumatic chamber and a second pneumatic chamber. The air inlet end of the first pneumatic chamber is communicated with the air bag through a pipeline. The second pneumatic chamber is communicated with the air pump through a pipeline. Both the first pneumatic chamber and the second pneumatic chamber are connected to the upper part of the vertically moving valve rod; 4. A sunken side-switch pneumatic control toilet using the pneumatic flushing valve for toilet according to any one of claims 1-3, characterized in that, The top surface height of the water tank of the toilet is not higher than the height of the toilet lid.

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