A split type fully pneumatically controlled vacuum toilet

Abstract

The present invention relates to a split-type fully air-controlled vacuum toilet, comprising a toilet body, an air-controlled water valve installed inside the toilet body for flushing, a vacuum drain valve for draining sewage, an air-controlled controller for controlling the on and off of the air-controlled water valve and the vacuum drain valve, and an air-controlled button installed outside the toilet body for driving the air-controlled controller to perform work; a toilet cavity is arranged inside the toilet body, and the toilet cavity is connected to a water inlet pipe and a drain pipe; the air-controlled water valve is installed on the water inlet pipe, and the vacuum drain valve is installed on the drain pipe, and a control pipeline is connected between the air-controlled controller and the air-controlled water valve and the vacuum drain valve; the present invention is used to realize the sewage discharge action after the vacuum toilet is used, and each structural design is reasonable and compact. Through their coordinated use, the noise in the sewage discharge process can be effectively reduced and the function can be maximized. During the use process, the efficient structural design can also effectively improve the service life.

Description

Technical Field

[0001] The present invention relates to the field of vacuum sewage collection, transportation and treatment technology, wherein vacuum sewage collection technology refers to a front-end device or product for collecting sewage at the sewage source, including but not limited to various kitchens (such as toilets, urinals, shower rooms, bathtubs, etc.) and sanitary products (such as vegetable sinks, dishwashers, etc.); vacuum sewage transportation technology refers to the relevant technology of efficiently transporting sewage collected by front-end devices or products to sewage post-treatment equipment; vacuum sewage treatment technology refers to post-treatment equipment or devices, the main function of which is to separate and purify the centralized collected sewage into solids and liquids, wherein the solids can be made into organic fertilizers, and the sewage can be filtered and purified by MBR membrane technology to achieve green discharge. The present invention particularly relates to a split-type fully gas-controlled vacuum toilet. Background Art

[0002] In the field of vacuum domestic sewage collection, transportation and treatment technology, vacuum domestic sewage collection is the most advanced technology; its basic implementation principle is as follows: first, the sewage collection inlet pipeline (or sewage inlet pipeline) in the vacuum sewage transportation system is connected to various sewage front-end collection equipment, including but not limited to various kitchens (such as toilets, urinals, shower rooms, bathtubs, etc.) and sanitary products (such as vegetable sinks, dishwashers, etc.); secondly, the vacuum pump group generates vacuum in the vacuum sewage transportation system; finally, during the operation of the sewage front-end collection equipment, after the vacuum sewage valve is connected, the pressure difference between the external atmospheric pressure and the vacuum value inside the pipeline in the vacuum sewage transportation system is used to act on the sewage and mixed with air to achieve turbulent transportation of sewage to the sewage collection inlet pipeline (or sewage inlet pipeline).

[0003] Over the past 30 years, researchers, mainly from Europe and the United States, have tried some methods and technologies to reduce the sewage noise generated by vacuum toilets and other related products in vacuum collection systems. Although the domestic accumulation of related technologies has been relatively short, continuous breakthroughs have been made in the field of vacuum sewage discharge.

[0004] At present, the known technical solutions (refer to 1996-US 5515554, 1994-5317763, etc.) are to use an airtight toilet seat or a toilet seat with good noise absorption, or to add a separate auxiliary air supply pipe to the vacuum drain valve; although the solution is relatively simple and low-cost, the noise reduction technology and method are limited in effect in reducing noise, and only reduce it by about 1 to 3 decibels; it is commendable that when testing the drainage performance of the vacuum toilet, the researchers found that the noise limit value can be significantly reduced by reducing the on-off time of the vacuum drain valve; according to the invention, it proposes a technical method or solution to control or operate the vacuum drain valve in products such as vacuum toilets; the specific feature of the technical solution is that the vacuum drain The opening time of the sewage valve is controlled to be less than 0.75 seconds, and the closing time of the vacuum sewage valve is controlled to be less than 0.75 seconds; at the same time, an operating or control device is also proposed to meet the above basic operating speed requirements; the structure of the device includes three operating valves, and the three operating valves are controlled by a cam device driven by a piston / cylinder device; wherein, under the triggering action of a starting device, the first operating valve connects the pipeline connected to the vacuum source to the cylinder body chamber in the piston / cylinder device through the corresponding supply chamber, pipeline and storage chamber; the second operating valve connects the storage chamber with the drive unit through the corresponding pipeline to drive the vacuum sewage valve; the third operating valve is used for vacuum toilet flushing pipeline control.

[0005] Furthermore, the known technical solutions (see US6128789A, EP0778432B1) use an airtight toilet seat or a toilet seat with good noise absorption, and also use a vacuum drain valve with active ventilation function. At the same time, the R&D personnel have also effectively utilized the known technical experience, that is, by reducing the on-off time of the vacuum drain valve, the noise limit value can be significantly reduced; the specific feature of this technical solution is that the opening time of the vacuum drain valve is controlled below 0.25 seconds, and the closing time of the vacuum drain valve is controlled below 0.40 seconds; although the solution is relatively simple and low in cost, the noise reduction technology and method are quite effective in reducing noise, reducing it by about 15 decibels; at the same time, an operating or control device is also proposed to meet the above-mentioned basic operating speed requirements; the structural composition of the device also includes three operating valves, and the three operating valves are also controlled by a cam device driven by a piston / cylinder device, which is similar to the previous technical solution.

[0006] From the above, it can be seen that the vacuum toilets in the prior art have problems such as noise, poor functionality, and short service life caused by unreasonable internal structure design. Therefore, the present invention has developed a split-type fully air-controlled vacuum toilet to solve the problems in the prior art. After searching, no technical solutions identical or similar to the present invention were found. Summary of the invention

[0007] The purpose of the present invention is to provide a split-type fully air-controlled vacuum toilet to solve the problems of noise, poor functionality, short service life, etc. caused by unreasonable internal structure design of vacuum toilets in the prior art.

[0008] The technical solution of the present invention is: a split-type fully air-controlled vacuum toilet, comprising a toilet body, an air-controlled water valve installed inside the toilet body for flushing, a vacuum sewage valve for draining sewage, an air-controlled controller for controlling the on and off of the air-controlled water valve and the vacuum sewage valve, and an air-controlled button installed outside the toilet body for driving the air-controlled controller to perform work; a toilet cavity is provided inside the toilet body, and the toilet cavity is connected to a water inlet pipe and a sewage pipe; the air-controlled water valve is installed on the water inlet pipe, and the vacuum sewage valve is installed on the sewage pipe, and a control pipeline is connected between the air-controlled controller and the air-controlled water valve and the vacuum sewage valve.

[0009] Preferably, the outer end of the air-controlled water valve is provided with a water inlet, a water outlet and a first control interface, and a first valve core component for controlling the on-off of the water inlet and the water outlet is provided inside; the outer end of the vacuum sewage valve is provided with a sewage inlet, a sewage outlet, a vacuum interface A, an air interface A and a second control interface, and a second valve core component for controlling the on-off of the sewage inlet and the sewage outlet is provided inside; the outer end of the air-controlled controller is provided with a vacuum interface B, an air interface B, a first output interface, a second output interface and an air-controlled interface B, and an execution control component for realizing intermittent connection of the first output interface and the second output interface with the vacuum interface B and the air interface B through the air pressure change of the air-controlled interface B is provided inside; the outer end of the air-controlled button is provided with an air-controlled interface A; the control pipeline is used to respectively connect the air-controlled interface A with the air-controlled interface B, the first control interface with the first output interface, the second control interface with the second output interface, the vacuum interface A with the vacuum interface B, and the air interface A with the air interface B.

[0010] Preferably, a water valve chamber connected to the water inlet, the water outlet and the first control interface is provided inside the air-controlled water valve, the first valve core assembly is provided in the water valve chamber, and includes a first valve stem that realizes the opening and closing of the water inlet through axial movement, a first corrugated diaphragm fixedly connected to the first valve stem, and a first return spring for realizing the resetting of the first valve stem, the first corrugated diaphragm is connected to the first control interface at the top, and is connected to the water inlet and the water outlet at the bottom; a drain valve chamber is provided inside the vacuum drain valve, a connecting flow channel is formed between the drain inlet and the drain, the second valve core assembly is provided in the drain valve chamber and extends into the connecting flow channel, includes a second valve stem that realizes the opening and closing of the connecting flow channel through axial movement, a sealing guide plate fixedly connected to the second valve stem, and a second return spring for realizing the resetting of the second valve stem. A reset spring, a plug is fixed on one side of the second valve stem biased toward the connecting flow channel, the upper part of the sealing guide plate is connected to the second control interface, and the lower part is connected to the air interface; an installation chamber is arranged inside the air control controller, and an air flow channel, a vacuum flow channel A and a vacuum flow channel B connected to the installation chamber are arranged on the internal side, the air control interface B is connected to the upper end of the installation chamber, the vacuum interface B is connected to the vacuum flow channel A and the vacuum flow channel B, the air interface B is connected to the air flow channel, the first output interface and the second output interface are connected to the lower end of the installation chamber; the execution control assembly includes an upper valve core assembly, a middle valve core assembly and a lower valve core assembly arranged in the installation chamber; a button cavity connected to the air control interface A and capable of realizing internal air pressure changes is arranged inside the air control button.

[0011] Preferably, the upper end of the water valve chamber is provided with an upper inner hole for the first valve stem to be plugged in and move, and the lower end is provided with a lower inner hole for the first valve stem to move downward and be blocked, and the side is provided with a side flow channel connected to both the upper inner hole and the lower inner hole, and the lower inner hole is connected to the water inlet; the cross-sectional areas of the upper end face and the lower end face of the first valve stem are the same.

[0012] Preferably, an inner valve core assembly for achieving sealing between the second valve core assembly and the inner wall of the connecting flow channel is provided on the side of the second valve stem that is biased towards the connecting flow channel, and the inner valve core assembly includes an inner valve stem, a pair of sliders and a special-shaped rubber sealing ring that are arranged in sequence from top to bottom; the inner valve stem divides the interior of the second valve stem into an upper inner chamber and a lower inner chamber, and the second valve stem is provided with a negative pressure pipeline extending to the side wall and communicating with the upper inner chamber, and a vacuum pipeline communicating with the lower inner chamber; the negative pressure pipeline is connected to one side of the sewage inlet, and the vacuum pipeline is connected to one side of the sewage outlet, and the lifting and lowering movement of the inner valve stem is achieved by the change of pressure difference; the special-shaped rubber sealing ring is nested at the outer wall of the plug, and the sealing contact with the inner wall of the connecting flow channel is achieved by the push of the inner valve stem and a pair of sliders.

[0013] Preferably, the installation chamber includes a first cavity, a second cavity, a third cavity and a fourth cavity arranged in sequence from top to bottom; a first inner hole is arranged at the upper end of the first cavity, a second inner hole is arranged between the first cavity and the second cavity, a third inner hole is arranged between the second cavity and the third cavity, and a fourth inner hole is arranged between the third cavity and the fourth cavity; the upper valve core assembly is arranged in the first inner hole and the first cavity, including an upper valve stem and a pressure plate arranged in an integrated structure, and a third return spring arranged below the pressure plate; the upper valve stem is plugged into the first inner hole, the pressure plate is arranged in the first cavity, and the first cavity is divided into a first upper chamber and a first lower chamber; the middle valve core assembly includes a middle valve stem and a fourth return spring, the middle valve stem is plugged into the second inner hole The lower valve core assembly includes a lower valve stem, a second corrugated diaphragm fixed to the upper end of the lower valve stem, and a fifth return spring; the lower valve stem passes through the third inner hole, and the upper and lower ends extend to the second cavity and the third cavity respectively, and the lower end realizes the opening and closing of the fourth inner hole by movement; the second corrugated diaphragm is arranged in the second cavity, and divides the second cavity into a second upper chamber and a second lower chamber; the air flow channel is connected with the first upper chamber, the first lower chamber and the fourth cavity; the vacuum flow channel A connects the vacuum interface with the second lower chamber, and the vacuum flow channel B connects the second lower chamber and the side wall of the second inner hole; the air control interface B is connected with the first inner hole, and the first output interface and the second output interface are both connected with the third cavity.

[0014] Preferably, a notch A is provided on the side wall of the upper end portion of the middle valve stem for realizing communication between the first lower chamber and the second upper chamber when the middle valve stem moves to align with the second inner hole, and a vent hole is provided at the lower end portion for realizing communication between the second upper chamber and the vacuum flow channel B when the middle valve stem moves to align with the side wall of the second inner hole; and a notch B is provided on the side wall of the lower valve stem for realizing communication between the second lower chamber and the third cavity when the middle valve stem moves to align with the third inner hole.

[0015] Preferably, a needle valve assembly for controlling the gas flow rate is horizontally arranged at one end of the vacuum flow channel B that is biased toward the second lower chamber.

[0016] Preferably, the gas-controlled button includes a base, a shell, a button cap nested inside the shell, and a sixth reset spring for realizing pressing and resetting of the button cap, which are coaxially fixed in sequence; the base, the shell and the button cap together form a button cavity.

[0017] Preferably, the gas control button is installed on the side wall of the rear end of the toilet body or on a wall close to the installation position of the toilet body.

[0018] Compared with the prior art, the advantages of the present invention are:

[0019] (1) The present invention adopts an air-controlled water valve, a vacuum sewage valve, an air-controlled controller and an air-controlled button to constitute the control execution component inside the toilet body, which is used to realize the sewage discharge action after the vacuum toilet is used. The design of each structure is reasonable and compact. Through their coordinated use, they can effectively reduce the noise in the sewage discharge process and maximize the function. During the use process, the efficient structural design can also effectively increase the service life.

[0020] (2) The pneumatic water valve has a compact structure and occupies little space, making space utilization and parts configuration during installation more convenient and easy. When used in a vacuum toilet, only one pneumatic water valve is required, and there is no need to configure a two-position two-way solenoid valve in the traditional structure. The investment cost is low, and maintenance is time-saving and relatively inexpensive. The first valve core component is used internally to open and close, avoiding the use of electrical energy required in the traditional structure, with higher safety performance and no personal safety accidents. The pneumatic water valve has high reliability and will not be affected by harsh environmental factors, such as sudden natural disasters and sudden power outages, which can ensure the normal operation of the pneumatic water valve.

[0021] (3) The vacuum drain valve adopts pressure difference driving technology to realize the movement of the second valve core assembly and the inner valve core assembly, thereby realizing the opening and closing of the vacuum drain valve, as well as the efficient sealing of the vacuum drain valve in the closed state; the internal connecting flow channel for sewage discharge adopts a streamlined design, with minimal flow resistance, maximum flow efficiency, and optimal vacuum sewage transportation efficiency.

[0022] (4) The air-controlled controller uses an air-controlled button connected to the air-controlled interface B to achieve split triggering. The air-controlled button can be installed anywhere near the vacuum toilet, such as on the side wall of the rear end of the toilet body or on a nearby wall. At the same time, the air-controlled controller is an integrated structure with fewer parts and higher reliability. By triggering the air-controlled button, the air pressure at the air-controlled interface B is changed, and the axial movement of the execution control component is realized, thereby controlling the first output interface and the second output interface to be intermittently connected to the vacuum interface B and the air interface B, that is, controlling the first output interface and the second output interface to intermittently introduce air or form a vacuum, thereby controlling the on and off of the air-controlled water valve connected to the first output interface and the on and off of the vacuum drain valve connected to the second output interface, and having strong functionality.

[0023] (5) The pneumatic controller does not require the use of an electric power source, such as a battery pack, solar panel, cable, and transformer, and can be controlled directly through changes in air pressure at the pneumatic control interface B. The overall structure has low energy consumption, and a needle valve assembly is used internally to achieve a delayed flushing adjustment function. Compared with the traditional valve core damping structure, the damping adjustment must be disassembled and then reassembled to achieve adjustment. The present invention can be adjusted directly through the needle valve assembly without disassembly, and is more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0025] Figure 1 This is a schematic diagram of the appearance structure of a split-type fully pneumatically controlled vacuum toilet according to the present invention;

[0026] Figure 2 It is a schematic diagram of the installation structure of the air-controlled water valve, vacuum drain valve, air-controlled controller and air-controlled button of the present invention;

[0027] Figure 3 It is a schematic diagram of the distribution structure of the gas-controlled water valve, vacuum drain valve, gas-controlled controller and gas-controlled button of the present invention;

[0028] Figure 4 It is a side view of a split type fully pneumatically controlled vacuum toilet according to the present invention;

[0029] Figure 5 It is a structural schematic diagram of the pneumatically controlled water valve, the vacuum drain valve, the pneumatically controlled controller and the pneumatically controlled button of the present invention being connected through a control pipeline;

[0030] Figure 6 It is a side view of the toilet body of the present invention;

[0031] Figure 7 This is a schematic diagram of the appearance structure of the air-controlled water valve of the present invention;

[0032] Figure 8 is a cross-sectional view of the air-controlled water valve of the present invention;

[0033] Fig. 9 This is a schematic diagram of the appearance structure of the vacuum drain valve of the present invention;

[0034] Fig.10 It is a cross-sectional view of the vacuum drain valve of the present invention along a direction parallel to the axis of the connecting flow channel;

[0035] Fig.11 It is a 1 / 4 cross-sectional structural diagram of the vacuum drain valve of the present invention;

[0036] Fig.12 It is a cross-sectional view of the vacuum drain valve of the present invention along a direction perpendicular to the axis of the connecting flow channel (including a schematic diagram of the arrangement structure of the inner valve core component);

[0037] Fig.13 It is a schematic diagram of the arrangement structure of the inner valve core assembly of the present invention;

[0038] Fig.14 An exploded view of the second valve core assembly and the inner valve core assembly of the present invention;

[0039] Fig.15This is a schematic diagram of the appearance structure of the gas control controller of the present invention;

[0040] Fig.16 A bottom view of the gas control controller of the present invention;

[0041] Fig.17 is a cross-sectional view of the gas control controller of the present invention;

[0042] Fig.18 This is a schematic diagram of the installation chamber structure inside the gas control controller of the present invention;

[0043] Fig.19 It is a schematic diagram of the structure of the execution control component inside the gas control controller of the present invention;

[0044] Fig. 20 is a cross-sectional view of the gas control button of the present invention;

[0045] Fig.21 It is a cross-sectional view of the gas control controller of the present invention in a non-working state;

[0046] Fig. 22 It is a cross-sectional view of the gas control controller of the present invention in a working state (the gas control button is fully pressed);

[0047] Fig.23 It is a cross-sectional view of the pneumatic control controller of the present invention in a reset state (the upper valve core assembly and the middle valve core assembly have been reset, but the lower valve core assembly has not been reset).

[0048] Among them: 1. Toilet body;

[0049] 11. toilet cavity, 12. flush connection port, 13. sewage connection port, 14. water inlet pipe, 15. sewage pipe;

[0050] 2. Air-controlled water valve;

[0051] 21. water inlet, 22. water outlet, 23. first control interface, 24. water valve chamber, 25. upper inner hole, 26. lower inner hole, 27. side flow channel, 28. first valve core assembly;

[0052] 281, a first valve stem, 282, a first corrugated diaphragm, 283, a first return spring;

[0053] 3. Vacuum drain valve;

[0054] 31. sewage inlet, 32. sewage outlet, 33. vacuum interface A, 34. air interface A, 35. second control interface, 36. sewage valve chamber, 37. connecting flow channel;

[0055] 38. A second valve core assembly;

[0056] 381, second valve stem, 382, ​​sealing guide plate, 383, second return spring, 384, plug;

[0057] 39. Internal valve core assembly;

[0058] 391, inner valve stem, 392, slider, 393, special-shaped rubber sealing ring, 394, upper inner chamber, 395, lower inner chamber, 396, negative pressure pipeline, 397, vacuum pipeline;

[0059] 4. Air control controller;

[0060] 41. Air control interface B, 42. Vacuum interface B, 43. Air interface B, 44. First output interface, 45. Second output interface;

[0061] 46. ​​Install the chamber;

[0062] 461, first cavity, 4611, first upper chamber, 4612, first lower chamber, 462, second cavity, 4621, second upper chamber, 4622, second lower chamber, 463, third cavity, 464, fourth cavity, 465, first inner hole, 466, second inner hole, 467, third inner hole, 468, fourth inner hole;

[0063] 47. Upper valve core assembly;

[0064] 471, upper valve stem, 472, pressure plate, 373, third return spring;

[0065] 48. Middle valve core assembly;

[0066] 481, middle valve stem, 482, fourth return spring;

[0067] 49. Lower valve core assembly;

[0068] 491, lower valve stem, 492, second corrugated diaphragm, 493, fifth return spring;

[0069] 410, air flow channel, 411, vacuum flow channel A, 412, vacuum flow channel B, 413, vent hole, 414, needle valve assembly, 415, annular sealing ring, 416, lip sealing ring, 417, O-ring, 418, rubber plug;

[0070] 5. Gas control button;

[0071] 51. Air control interface A, 52. Base, 53. Housing, 54. Button cap, 55. Sixth return spring, 56. Button cavity;

[0072] 6. Control pipeline. DETAILED DESCRIPTION

[0073] The present invention is further described in detail below in conjunction with specific embodiments:

[0074] like Figure 1-4 As shown, a split-type fully air-controlled vacuum toilet includes a toilet body 1, an air-controlled water valve 2 installed on the inner side of the toilet body 1 for flushing, a vacuum drain valve 3 for draining, an air-controlled controller 4 for controlling the on and off of the air-controlled water valve 2 and the vacuum drain valve 3, and an air-controlled button 5 installed on the outer side of the toilet body 1 for driving the air-controlled controller 4 to perform work; a toilet cavity is provided inside the toilet body 1, and the toilet cavity is connected to a water inlet pipe 14 and a drain pipe 15; the air-controlled water valve 2 is installed on the water inlet pipe 14, the vacuum drain valve 3 is installed on the drain pipe 15, and a control pipeline 6 is connected between the air-controlled controller 4 and the air-controlled water valve 2 and the vacuum drain valve 3.

[0075] Simple, such as Figure 5 As shown, the outer end of the air-controlled water valve 2 is provided with a water inlet 21, a water outlet 22 and a first control interface 23, and a first valve core component 28 for controlling the on-off of the water inlet 21 and the water outlet 22 is arranged inside; the outer end of the vacuum sewage valve 3 is provided with a sewage inlet 31, a sewage outlet 32, a vacuum interface A33, an air interface A34 and a second control interface 35, and a second valve core component 38 for controlling the on-off of the sewage inlet 31 and the sewage outlet 32 ​​is arranged inside; the outer end of the air-controlled controller 4 is provided with a vacuum interface B42, an air interface B43, a first output interface 44, a second output interface 45 and an air-controlled interface B41, and an execution control component for realizing intermittent connection between the first output interface 44 and the second output interface 45 and the vacuum interface B42 and the air interface B43 through the air pressure change of the air-controlled interface B41 is arranged inside; the outer end of the air-controlled button 5 is provided with an air-controlled interface A51; Figure 5 As shown, the control pipeline 6 is used to respectively connect the air control interface A51 and the air control interface B41, the first control interface 23 and the first output interface 44, the second control interface 35 and the second output interface 45, the vacuum interface A33 and the vacuum interface B42, and the air interface A34 and the air interface B43; the dotted line in the figure is the direction of water flow.

[0076] Specifically, the specific structure and working principle of the toilet body 1, the air-controlled water valve 2, the vacuum drain valve 3, the air-controlled controller 4 and the air-controlled button 5 are as follows:

[0077] like Figure 6As shown, the toilet body 1 is generally used for wall installation, and a toilet cavity 11 is arranged on the inner side. The toilet cavity 11 is a hollow structure with an opening at the upper end, and a reversible toilet cover is arranged at the upper end; a flushing connection port 12 connected to a water inlet pipe 14 is arranged at the upper end of the toilet cavity 11, which is used to discharge water into the toilet cavity 11 and flush along the inner wall of the toilet cavity 11, and a sewage connection port 13 connected to a sewage pipe 15 is arranged at the lower end of the toilet cavity 11, and is used to flush away the excrement in the toilet cavity 11; the space at the rear end of the toilet cavity 11 is used for placing and installing an air-controlled water valve 2, a vacuum sewage valve 3 and an air-controlled controller 4, so that the overall structure adopts a rear sewage discharge method for sewage discharge, and no water tank is arranged; the side wall at the rear end of the toilet body 1 and the wall near the toilet body 1 can be used to install an air-controlled button 5.

[0078] like Figure 7 , Figure 8 As shown, the air-controlled water valve 2 is provided with a water valve chamber 24 connected with the water inlet 21, the water outlet 22 and the first control interface 23. The first valve core assembly 28 is arranged in the water valve chamber 24, including a first valve stem 281 that realizes the opening and closing of the water inlet 21 through axial movement, a first corrugated diaphragm 282 fixedly connected to the first valve stem 281, and a first return spring 283 for realizing the return of the first valve stem 281. The upper part of the first corrugated diaphragm 282 is connected to the first control interface 23 is connected, and the lower part is connected with the water inlet 21 and the water outlet 22; further, the upper end of the water valve chamber 24 is provided with an upper inner hole 25 for the first valve stem 281 to be plugged in and move, and the lower end is provided with a lower inner hole 26 for the first valve stem 281 to move downward and be blocked, and the side is provided with a side flow channel 27 connected with both the upper inner hole 25 and the lower inner hole 26, and the lower inner hole 26 is connected with the water inlet 21; at the same time, the cross-sectional areas of the upper end face and the lower end face of the first valve stem 281 are the same.

[0079] The working principle of the air-controlled water valve 2 is as follows:

[0080] In the non-working state, air is introduced into the first control interface 23, and the water pressure on the upper end face of the first valve stem 281 is realized through the water inlet 21, the side flow channel 27 and the upper inner hole 25, and the water pressure on the lower end face of the first valve stem 281 is realized through the water inlet 21 and the lower inner hole 26. Since the cross-sectional areas of the upper end face and the lower end face of the first valve stem 281 are the same, the pressures they are subjected to are consistent, so the total water pressures on the first valve core assembly 28 offset each other. Therefore, the closing of the first valve core assembly 28 is only affected by the elastic force of the first return spring 283. Through the action of the first return spring 283, the lower end portion of the first valve stem 281 is in the lower inner hole 26, thereby blocking the connection between the water inlet 21 and the water outlet 22. At this time, the air-controlled water valve 2 is in a water-free state.

[0081] In the working state, a vacuum is formed at the first control interface 23, and there is a pressure difference between the upper and lower ends of the first corrugated diaphragm 282. The pressure difference overcomes the compression force of the first return spring 283 to move the first valve stem 281 upward, and the lower end of the first valve stem 281 is separated from the lower inner hole 26, thereby connecting the water inlet 21 and the water outlet 22. At this time, the air-controlled water valve 2 is in a water-passing state.

[0082] like Fig. 9 , Fig.10 , Fig.11 As shown, a drain valve chamber 36 is provided inside the vacuum drain valve 3, a connecting flow channel 37 is formed between the sewage inlet 31 and the drain port 32, a second valve core assembly 38 is arranged in the drain valve chamber 36, and extends into the connecting flow channel 37, including a second valve stem 381 for realizing the opening and closing of the connecting flow channel 37 through axial movement, a sealing guide plate 382 fixedly connected to the second valve stem 381, and a second reset spring 383 for realizing the reset of the second valve stem 381, a plug 384 is fixed on one side of the second valve stem 381 biased toward the connecting flow channel 37, the upper side of the sealing guide plate 382 is connected to the second control interface 35, and the lower side is connected to the air interface; further, as Fig.12 As shown, an inner valve core component 39 for sealing between the second valve core component 38 and the inner wall of the communicating flow channel 37 is provided on the side of the second valve stem 381 that is biased toward the communicating flow channel 37. Fig.13 , Fig.14 As shown, the inner valve core assembly 39 includes an inner valve stem 391, a pair of sliders 392 and a special-shaped rubber sealing ring 393 which are arranged in sequence from top to bottom; the inner valve stem 391 divides the interior of the second valve stem 381 into an upper inner chamber 394 and a lower inner chamber 395, and the interior of the second valve stem 381 is provided with a negative pressure pipeline 396 extending to the side wall and communicating with the upper inner chamber 394, and a vacuum pipeline 397 communicating with the lower inner chamber 395; the negative pressure pipeline 396 is connected to one side of the sewage inlet 31, and the vacuum pipeline 397 is connected to one side of the sewage outlet 32, and the lifting and lowering movement of the inner valve stem 391 is realized by the change of pressure difference; the special-shaped rubber sealing ring 393 is nested at the outer wall of the plug 384, and is connected to the inner valve stem 391 through the inner valve stem 39 1 and the push of a pair of sliders 392 realize the sealing contact with the inner wall of the connecting flow channel 37; the plug 384 is a hemispherical structure, with a pair of wedge-shaped platforms in an eight-shaped shape in the middle of the upper end surface, and an annular groove is provided on the outer wall along the vertical circumferential direction; a pair of sliders 392 are contacted and set on the wedge platform, and the special-shaped rubber sealing ring 393 is nested in the annular groove in a U shape, and the two ends extend upward to make the pair of sliders 392 contact with the inner wall of the end of the special-shaped rubber sealing ring 393; the inner valve core is set above the pair of sliders 392, and the lower end contacts the end of the slider 392, and the pair of sliders 392 are moved along the wedge platform by lifting and lowering movement, thereby changing the end opening size of the U-shaped structure of the special-shaped rubber sealing ring 393.

[0083] The working principle of the vacuum drain valve 3 is as follows:

[0084] In the non-working state, air is introduced into the second control interface 35, and the air pressure at the upper and lower ends of the sealing guide plate 382 is the same. The second valve core assembly 38 is lowered by the second return spring 383. At this time, the second valve stem 381 together with the plug 384 at the lower end divides the inside of the communication channel 37 into two parts, thereby causing the pressure on the end biased towards the sewage outlet 32 ​​to decrease, while the pressure on the end biased towards the sewage inlet 31 to increase. Since the vacuum line 397 is on the side biased towards the sewage outlet 32, the negative pressure line 396 is On the side biased towards the sewage inlet 31, the vacuum pipeline 397 is connected to the lower inner chamber 395, and the negative pressure pipeline 396 is connected to the upper inner chamber 394, so that the pressure in the lower inner chamber 395 is reduced, and the pressure in the upper inner chamber 394 is increased, and the inner valve stem 391 descends, pushing a pair of sliders 392 to move to both sides along the wedge-shaped platform, and then pushing the special-shaped rubber sealing ring 393, and finally achieving the sealing at the intersection line of the connecting flow channel 37 and the plug 384, and realizing the closure and effective sealing of the connecting flow channel 37.

[0085] Under working condition, vacuum is formed in the second control interface 35, and the air pressure above the sealing guide plate 382 is less than the air pressure below. The second valve stem 381 overcomes the action of the second compression spring and rises. At this time, the sewage inlet 31 is connected with the sewage outlet 32 ​​for discharging sewage. The air pressure in the negative pressure pipeline 396 and the vacuum pipeline 397 is the same, so the pressure difference between the upper inner chamber 394 and the lower inner chamber 395 disappears, the inner valve stem 391 moves upward, the pair of sliders 392 retreat, and the special-shaped rubber sealing ring 393 is reset to reduce the clamping force.

[0086] like Fig.15 , Fig.16 , Fig.17 As shown, the air control controller 4 is provided with an installation chamber 46 inside, and an air flow channel 410, a vacuum flow channel A411 and a vacuum flow channel B412 connected to the installation chamber 46 are provided on the internal side, the air control interface B41 is connected to the upper end of the installation chamber 46, the vacuum interface B42 is connected to the vacuum flow channel A411 and the vacuum flow channel B412, the air interface B43 is connected to the air flow channel 410, and the first output interface 44 and the second output interface 45 are connected to the lower end of the installation chamber 46; the execution control component includes an upper valve core component 47, a middle valve core component 48 and a lower valve core component 49 arranged in the installation chamber 46; further, as Fig.18As shown, the installation chamber 46 includes a first cavity 461, a second cavity 462, a third cavity 463 and a fourth cavity 464 arranged in sequence from top to bottom; a first inner hole 465 is arranged at the upper end of the first cavity 461, a second inner hole 466 is arranged between the first cavity 461 and the second cavity 462, a third inner hole 467 is arranged between the second cavity 462 and the third cavity 463, and a fourth inner hole 468 is arranged between the third cavity 463 and the fourth cavity 464; Fig.19 As shown, the upper valve core assembly 47 is arranged in the first inner hole 465 and the first cavity 461, including an upper valve stem 471 and a pressure plate 472 arranged in an integral structure, and a third return spring 473 arranged below the pressure plate 472; the upper valve stem 471 is plugged into the first inner hole 465, and the pressure plate 472 is arranged in the first cavity 461, and the first cavity 461 is divided into a first upper chamber 4611 and a first lower chamber 4612; the middle valve core assembly 48 includes a middle valve stem 481 and a fourth return spring 482, and the middle valve stem 481 is plugged into the second inner hole 466 The lower valve core assembly 49 comprises a lower valve stem 491, a second corrugated diaphragm 492 fixed to the upper end of the lower valve stem 491, and a fifth return spring 493; the lower valve stem 491 passes through the third inner hole 467, and the upper and lower ends extend to the second cavity 462 and the third cavity 463 respectively, and the lower end realizes the opening and closing of the fourth inner hole 468 by movement; the second corrugated diaphragm 492 is arranged in the second cavity 462, and divides the second cavity 462 into a second upper chamber 4621 and a second lower chamber The air channel 410 is connected to the first upper chamber 4611, the first lower chamber 4612 and the fourth cavity 464; the vacuum channel A411 is connected to the vacuum interface and the second lower chamber 4622, the vacuum channel B412 is connected to the second lower chamber 4622 and the side wall of the second inner hole 466, and the needle valve assembly 414 for controlling the gas flow rate is arranged in the horizontal direction at one end of the vacuum channel B412 that is biased toward the second lower chamber 4622; the air control interface B41 is connected to the first inner hole 465, the first output interface 44 and the second output interface 45 are both connected to the third cavity 463; at the same time, a notch A is provided on the side wall of the upper end portion of the middle valve stem 481 for realizing the connection between the first lower chamber 4612 and the second upper chamber 4621 when the middle valve stem 481 moves to align with the second inner hole 466, and a vent hole 413 is provided on the lower end portion for realizing the connection between the second upper chamber 4621 and the vacuum channel B412 when the middle valve stem 481 moves to align with the side wall of the second inner hole 466; a notch B is provided on the side wall of the lower valve stem 491 for realizing the connection between the second lower chamber 4622 and the third cavity 463 when the middle valve stem 481 moves to align with the third inner hole 467.

[0087] In order to ensure the sealing performance of the structure, sealing components are provided between the upper valve stem 471 and the first inner hole 465, between the middle valve stem 481 and the second inner hole 466, between the lower valve stem 491 and the third inner hole 467, and in the fourth inner hole 468 for cooperating with the lower end of the lower valve stem 491 to achieve sealing; the sealing component includes an annular sealing ring 415 arranged between the upper valve stem 471 and the first inner hole 465, a lip sealing ring 416 arranged between the middle valve stem 481 and the second inner hole 466, an O-ring 417 arranged between the lower valve stem 491 and the third inner hole 467, and a rubber plug 418 arranged in the fourth inner hole 468.

[0088] like Fig. 20 As shown, the air-controlled button 5 includes a base 52, a shell 53, a button cap 54 nested inside the shell 53, and a sixth reset spring 55 for realizing the pressing and resetting of the button cap 54, which are coaxially fixed in sequence; the base 52, the shell 53 and the button cap 54 together form a button cavity 56; the button cavity 56 is connected to the air-controlled interface A51, and the air pressure inside the button cavity 56 is changed by pressing the button cap 54, thereby affecting the air pressure at the air-controlled interface B41 connected thereto.

[0089] The working principle of the gas control controller 4 is as follows (combined with the working of the gas control button 5):

[0090] like Fig.21 As shown, in the non-working state, the air control button 5 connected to the air control interface B41 is in a non-pressed state, the air interface B43 is connected to the first upper chamber 4611 and the first lower chamber 4612 through the air flow channel 410, the upper valve stem 471 rises and resets to the highest point under the action of the third reset spring 473, and the middle valve stem 481 rises and resets to the highest point under the action of the fourth reset spring 482, and at the same time, under the action of the lip sealing ring 416, the first lower chamber 4612 is not connected to the second upper chamber 4621, so the air in the first lower chamber 4612 cannot enter the second upper chamber 4621; at the same time, the lower Under the action of the fifth return spring 493, the valve stem 491 rises and returns to the topmost point, and the lower end of the lower valve stem 491 disengages from the rubber plug 418, and then the third cavity 463 connected with the first output interface 44 and the second output interface 45 is connected with the fourth cavity 464 through the fourth inner hole 468, and then connected with the air interface B43, and finally the first output interface 44 and the second output interface 45 can be introduced into air; combined with the working principles of the air-controlled water valve 2 and the vacuum sewage valve 3, it can be known that at this time, the first control interface 23 and the second control interface 35 are both introduced into air, and the air-controlled water valve 2 and the vacuum sewage valve 3 are both in a non-working state.

[0091] like Fig. 22As shown, in the working state, the air control button 5 is pressed to the bottom, and the air pressure in the first inner hole 465 connected to the air control interface B41 increases, thereby overcoming the spring force of the third return spring 473 and the fourth return spring 482, so that the upper valve stem 471 and the middle valve stem 481 move downward; after the lower end of the middle valve stem 481 contacts the upper end of the lower valve stem 491, the air pressure in the first inner hole 465 continues to overcome the spring force of the third return spring 473, the fourth return spring 482 and the fifth return spring 493, so that the upper valve stem 471, the middle valve stem 481 and the lower valve stem 491 all drop to the bottom; when the lower valve stem 491 is at the bottom, the lower end of the lower valve stem 491 blocks the rubber plug 418, thereby disconnecting the communication between the air interface B43 and the third cavity 463; At the same time, since a notch B is provided on the side wall of the lower valve stem 491, the notch B is aligned with the third inner hole 467 when the lower valve stem 491 moves to the bottom, and is not aligned with the third inner hole 467 when the lower valve stem 491 is at the upper end, the notch B realizes the connection between the second lower chamber 4622 and the third cavity 463; furthermore, the vacuum interface B42 is connected to the second lower chamber 4622, so that the first output interface 44 and the second output interface 45 connected to the third cavity 463 are connected to the vacuum interface B42, and finally a vacuum is formed at the first output interface 44 and the second output interface 45; combined with the working principles of the air-controlled water valve 2 and the vacuum drain valve 3, it can be seen that at this time, a vacuum is formed in both the first control interface 23 and the second control interface 35, and the air-controlled water valve 2 and the vacuum drain valve 3 are both in working condition.

[0092] like Fig.23 As shown, in the reset state, the air control button 5 rebounds and resets, and the upper valve core assembly 47, the middle valve core assembly 48 and the lower valve core assembly 49 are reset in sequence, and the reset speed decreases step by step; when the upper valve stem 471 and the middle valve stem 481 are reset, and the lower valve stem 491 is not reset, as shown in FIG. Fig.23 As shown in the figure, the vacuum flow channel B412 connects the second upper chamber 4621 and the second lower chamber 4622, and both are connected to the vacuum interface B42. The only difference is that it takes time for the air pressure inside the second upper chamber 4621 to drop from atmospheric pressure to negative pressure, and this time is regulated and controlled by the needle valve assembly 414. At the same time, during this process, since the middle valve stem 481 has been reset, the vent 413 is connected to the vacuum flow channel B412, and the second upper chamber 4621 is connected to the vacuum flow channel B412; by manually adjusting the needle valve assembly 414, the reset speed of the lower valve stem 491 can be controlled, thereby realizing the delayed closing function of the air control controller 4.

[0093] In summary, the present invention adopts an air-controlled water valve 2, a vacuum sewage valve 3, an air-controlled controller 4 and an air-controlled button 5 to constitute the control execution component inside the toilet body 1, which is used to realize the sewage discharge action after the vacuum toilet is used. The structural designs are reasonable and compact. Through their coordinated use, they can effectively reduce the noise during the sewage discharge process and maximize the function. During the use process, the efficient structural design can also effectively improve the service life.

[0094] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the scope of protection of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the present invention.

Claims

1. A split type fully pneumatically controlled vacuum toilet, characterized in that: It includes a toilet body, an air-controlled water valve installed inside the toilet body for flushing, a vacuum sewage valve for sewage discharge, an air-controlled controller for controlling the on and off of the air-controlled water valve and the vacuum sewage valve, and an air-controlled button installed outside the toilet body for driving the air-controlled controller to perform work; a toilet cavity is arranged inside the toilet body, and the toilet cavity is connected to the water inlet pipe and the sewage pipe; the air-controlled water valve is installed on the water inlet pipe, the vacuum sewage valve is installed on the sewage pipe, and a control pipeline is connected between the air-controlled controller and the air-controlled water valve and the vacuum sewage valve; The outer end of the air-controlled water valve is provided with a water inlet, a water outlet and a first control interface, and a first valve core component for controlling the on-off of the water inlet and the water outlet is provided inside; the outer end of the vacuum sewage valve is provided with a sewage inlet, a sewage outlet, a vacuum interface A, an air interface A and a second control interface, and a second valve core component for controlling the on-off of the sewage inlet and the sewage outlet is provided inside; the outer end of the air-controlled controller is provided with a vacuum interface B, an air interface B, a first output interface, a second output interface and an air-controlled interface B, and an execution control component for realizing intermittent connection of the first output interface and the second output interface with the vacuum interface B and the air interface B through the air pressure change of the air-controlled interface B is provided inside; the outer end of the air-controlled button is provided with an air-controlled interface A; the control pipeline is used to respectively connect the air-controlled interface A with the air-controlled interface B, the first control interface with the first output interface, the second control interface with the second output interface, the vacuum interface A with the vacuum interface B, and the air interface A with the air interface B; A water valve chamber connected with the water inlet, the water outlet and the first control interface is arranged inside the air-controlled water valve, the first valve core assembly is arranged in the water valve chamber, including a first valve stem for realizing the opening and closing of the water inlet through axial movement, a first corrugated diaphragm fixedly connected to the first valve stem, and a first return spring for realizing the reset of the first valve stem, the first corrugated diaphragm is connected to the first control interface at the top, and is connected to the water inlet and the water outlet at the bottom; a sewage discharge valve chamber is arranged inside the vacuum sewage discharge valve, a connecting flow channel is formed between the sewage inlet and the sewage discharge port, the second valve core assembly is arranged in the sewage discharge valve chamber and extends into the connecting flow channel, including a second valve stem for realizing the opening and closing of the connecting flow channel through axial movement, a sealing guide plate fixedly connected to the second valve stem, and a second return spring for realizing the reset of the second valve stem, a plug is fixed on the side of the second valve stem biased toward the connecting flow channel, the sealing guide plate is connected to the second control interface at the top, and is connected to the air interface at the bottom; The upper end of the water valve chamber is provided with an upper inner hole for the first valve stem to be inserted and moved, and the lower end is provided with a lower inner hole for the first valve stem to move downward and be blocked, and the side is provided with a side flow channel connected to both the upper inner hole and the lower inner hole, and the lower inner hole is connected to the water inlet; the cross-sectional areas of the upper end face and the lower end face of the first valve stem are the same; An inner valve core assembly for achieving sealing between the second valve core assembly and the inner wall of the communicating flow channel is arranged on the side of the second valve stem that is biased toward the communicating flow channel, and the inner valve core assembly includes an inner valve stem, a pair of sliders and a special-shaped rubber sealing ring that are arranged in sequence from top to bottom; the inner valve stem divides the interior of the second valve stem into an upper inner chamber and a lower inner chamber, and the interior of the second valve stem is provided with a negative pressure pipeline that extends to the side wall and is connected to the upper inner chamber, and a vacuum pipeline that is connected to the lower inner chamber; the negative pressure pipeline is connected to one side of the sewage inlet, and the vacuum pipeline is connected to one side of the sewage outlet, and the lifting and lowering movement of the inner valve stem is achieved by the change of pressure difference.

2. A split type fully pneumatically controlled vacuum toilet according to claim 1, characterized in that: An installation chamber is provided inside the pneumatic control controller, and an air flow channel, a vacuum flow channel A and a vacuum flow channel B connected to the installation chamber are provided on the internal side, the pneumatic control interface B is connected to the upper end of the installation chamber, the vacuum interface B is connected to the vacuum flow channel A and the vacuum flow channel B, the air interface B is connected to the air flow channel, and the first output interface and the second output interface are connected to the lower end of the installation chamber; the execution control component includes an upper valve core component, a middle valve core component and a lower valve core component arranged in the installation chamber; the pneumatic control button is provided with a button cavity connected to the pneumatic control interface A and capable of realizing internal air pressure changes.

3. A split type fully pneumatically controlled vacuum toilet according to claim 2, characterized in that: The special-shaped rubber sealing ring is nested on the outer wall of the plug and realizes sealing contact with the inner wall of the connecting flow channel through the push of the inner valve stem and a pair of sliders.

4. A split type fully pneumatically controlled vacuum toilet according to claim 3, characterized in that: The installation chamber includes a first cavity, a second cavity, a third cavity and a fourth cavity arranged in sequence from top to bottom; a first inner hole is arranged at the upper end of the first cavity, a second inner hole is arranged between the first cavity and the second cavity, a third inner hole is arranged between the second cavity and the third cavity, and a fourth inner hole is arranged between the third cavity and the fourth cavity; an upper valve core assembly is arranged in the first inner hole and the first cavity, including an upper valve stem and a pressure plate arranged in an integrated structure, and a third return spring arranged under the pressure plate; the upper valve stem is plugged into the first inner hole, the pressure plate is arranged in the first cavity, and the first cavity is divided into a first upper chamber and a first lower chamber; the middle valve core assembly includes a middle valve stem and a fourth return spring, the middle valve stem is plugged into the second inner hole, and the upper and lower chambers are The two ends extend into the first cavity and the second cavity respectively; the lower valve core assembly includes a lower valve stem, a second corrugated diaphragm fixed to the upper end of the lower valve stem, and a fifth return spring; the lower valve stem passes through the third inner hole, and the upper and lower ends extend into the second cavity and the third cavity respectively, and the lower end realizes the opening and closing of the fourth inner hole by movement; the second corrugated diaphragm is arranged in the second cavity, and divides the second cavity into a second upper chamber and a second lower chamber; the air flow channel is connected with the first upper chamber, the first lower chamber and the fourth cavity; the vacuum flow channel A connects the vacuum interface with the second lower chamber, and the vacuum flow channel B connects the second lower chamber and the side wall of the second inner hole; the air control interface B is connected with the first inner hole, and the first output interface and the second output interface are both connected with the third cavity.

5. A split type fully pneumatically controlled vacuum toilet according to claim 4, characterized in that: A notch A is provided on the side wall of the upper end of the middle valve stem for connecting the first lower chamber with the second upper chamber when the valve stem moves to align with the second inner hole, and a vent hole is provided at the lower end for connecting the second upper chamber with the vacuum flow channel B when the valve stem moves to align with the side wall of the second inner hole; a notch B is provided on the side wall of the lower valve stem for connecting the second lower chamber with the third cavity when the valve stem moves to align with the third inner hole.

6. A split type fully pneumatically controlled vacuum toilet according to claim 5, characterized in that: A needle valve assembly for controlling the gas flow rate is arranged in the horizontal direction at one end of the vacuum flow channel B that is biased toward the second lower chamber.

7. A split type fully pneumatically controlled vacuum toilet according to claim 3, characterized in that: The gas-controlled button comprises a base, a shell, a button cap nested inside the shell, and a sixth reset spring for realizing pressing and resetting of the button cap, which are coaxially fixed in sequence; the base, the shell and the button cap together form a button cavity.

8. A split type fully pneumatically controlled vacuum toilet according to claim 7, characterized in that: The gas control button is installed on the side wall of the rear side end of the toilet body or on the wall close to the installation position of the toilet body.

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