A new type of vacuum toilet

Abstract

The present invention relates to the technical field of vacuum toilets and discloses a novel vacuum toilet comprising a vacuum mechanism, a flushing mechanism and a starting mechanism. The vacuum mechanism comprises a vacuum shell and a vacuum chamber. A Rafale nozzle is provided inside the vacuum chamber, the Rafale nozzle is located at the central axis of the vacuum shell, the interior of the vacuum chamber is communicated with the interior of the Rafale nozzle, a check valve is fixedly connected to the bottom of the vacuum shell, the bottom of the Rafale nozzle is suspended on the top of the check valve, the bottom of the check valve is fixedly connected to a connecting pipe, one end of the connecting pipe is fixedly connected to a sewer, which solves existing problems of toilets, such as waste of water resources, and significantly increases the endurance of ships without fresh water generators; solves the problems of backflow and odor in the toilet; reduces the cost for users in terms of purchase and maintenance; solves the commonality of vacuum pipelines, realizes the independence of toilet vacuum, and is easy to promote and use.

Description

Technical Field

[0001] The invention relates to the technical field of vacuum toilets, in particular to a novel vacuum toilet. Background Art

[0002] A vacuum toilet is a sanitary facility that uses the vacuum principle to attract and transport excrement. Its working principle is to use a vacuum pump to extract the air in the toilet, thereby generating negative pressure inside the toilet, so that the excrement is quickly attracted and transported to the sewage pipe. The design and use of vacuum toilets are both water-saving and environmentally friendly, so they have been widely used in some high-end public places and aviation fields.

[0003] Most of the toilets currently in use are water-flush type. Each time they are used, a large amount of water is required to flush, which wastes water resources. This is especially obvious on ships without fresh water generators. Existing vacuum toilets have complex structures, high maintenance costs and prices, and are not widely used. In terms of saving water resources, we actively respond to the national call. At the same time, existing toilets have frequent odors and water backflow, which is especially obvious when used on ships. Secondly, in existing vacuum toilets, all toilets share a vacuum pipeline, which can easily lead to the loss of vacuum and the failure of the toilet, and it is difficult to be widely promoted and used. Summary of the Invention

[0004] The present invention provides a new type of vacuum toilet to solve the technical problems that existing vacuum toilets have complex structures, high maintenance costs and prices, and frequent odors and water backflow in existing toilets, which are particularly obvious when used on ships. Secondly, in existing vacuum toilets, all toilets share a vacuum pipeline, which easily leads to loss of vacuum and failure of the toilet.

[0005] The present invention is implemented by the following technical solutions: a new type of vacuum toilet, including a vacuum mechanism, a flushing mechanism and a starting mechanism, the vacuum mechanism including a vacuum shell, a vacuum chamber is provided inside the vacuum shell, a vacuum degree sensor is fixedly connected to one side of the vacuum chamber, a Rafael nozzle is provided inside the vacuum chamber, the Rafael nozzle is located at the central axis of the vacuum shell, the interior of the vacuum chamber is connected to the interior of the Rafael nozzle, a check valve is fixedly connected to the bottom of the vacuum shell, the bottom of the Rafael nozzle is suspended on the top of the check valve, the bottom of the check valve is fixedly connected to a connecting pipe, one end of the connecting pipe is fixedly connected to a sewer, a support point is provided at the bottom of the vacuum shell, and the connecting pipe and the sewer are located inside the ground;

[0006] The check valve, under the action of its own elastic force or magnetic force, makes the valve core and the valve seat slightly fit together. When it is subjected to the vacuum force, the contact between the valve core and the valve seat becomes closer, thus enhancing the sealing effect.

[0007] The first gate valve is a manual valve. Before it is actuated, it relies on its own gravity and vacuum force to tightly combine the valve core and valve seat to maintain the sealing inside the vacuum chamber.

[0008] When the vacuum pump is working, the stop check valve opens, allowing the air in the vacuum chamber to be discharged through the vacuum pump. When the vacuum chamber reaches the set pressure, the vacuum pump stops. At this time, one end of the stop check valve is connected to the atmosphere. Under the action of the external atmospheric pressure, the valve core and the valve seat are tightly combined, preventing the backflow of air and ensuring the vacuum degree in the vacuum chamber.

[0009] The second gate valve is installed in the gravity water tank. Its function is to seal the water in the flushing water tank. This valve relies on the gravity of the water in the water tank to tightly combine the valve core and the valve seat to maintain the water tightness of the flushing water tank;

[0010] Wherein, the flushing mechanism includes a flushing water tank, a second gate valve is fixedly provided at the bottom of the flushing water tank, a flushing pipe is fixedly connected to the bottom of the second gate valve, one end of the flushing pipe is fixedly connected to a toilet cover assembly, the bottom of the toilet cover assembly is fixedly connected to the large end of a U-shaped elbow, the bottom of the U-shaped elbow is fixedly connected to a U-shaped elbow, one end of the U-shaped elbow is fixedly connected to a U-shaped elbow base, the bottom of the U-shaped elbow base is fixedly connected to a first gate valve, the bottom of the first gate valve is fixedly connected to a transition pipe, the bottom of the transition pipe is fixedly connected to the top of the Rafale nozzle, and a float assembly is provided inside the flushing water tank;

[0011] Secondly, the starting mechanism includes a handle, one end of the handle is fixedly connected to a ratchet rod, one end of the ratchet rod is fixedly connected to a ratchet, one end of the ratchet is fixedly connected to a fixed rod, one end of the fixed rod is fixedly connected to a second pull wire, one end of the ratchet is movably connected to a movable rod, one end of the movable rod is fixedly connected to a first pull wire, and one end of the first pull wire is fixedly connected to one end of the second gate valve.

[0012] Preferably, the vacuum mechanism also includes a vacuum pump, which is located inside the vacuum shell, one end of the vacuum pump is fixedly connected to a vacuum pump suction pipe, one end of the vacuum pump suction pipe is provided with a stop check valve, one end of the vacuum pump suction pipe is located inside the vacuum chamber, the interior of the vacuum pump suction pipe is connected to the interior of the vacuum chamber, the other end of the vacuum pump is fixedly connected to a vacuum pump exhaust pipe, and one end of the vacuum pump exhaust pipe is located inside the connecting pipe.

[0013] Preferably, one end of the vacuum pump is fixedly connected to a motor, one end of the motor is electrically connected to a power supply, one end of the motor is electrically connected to a control panel, and the control panel is fixedly connected to the inside of the vacuum housing.

[0014] Preferably, a hollow arc is opened at one end of the ratchet, the movable rod is movably connected inside the hollow arc, support points are set at both ends of the ratchet rod, and one end of the ratchet rod is fixedly connected to a spring.

[0015] Preferably, the top of the connecting pipe is externally contact-connected with a first sealing gasket, the bottom of the first sealing gasket is contact-connected with the top surface of the ground, the top of the check valve is contact-connected with a second sealing gasket, and the top of the second sealing gasket is contact-connected with the bottom of the vacuum shell.

[0016] Preferably, the top of the connecting pipe is contact-connected with a notch gasket, the top of the notch gasket is contact-connected with the bottom of the check valve, one end of the notch gasket is processed with a notch, the bottom end of the vacuum pump discharge pipe passes through the notch of the notch gasket, the first sealing gasket, the notch gasket and the second and third sealing gaskets form a whole, which is used to adjust the sealing of the vacuum toilet and prevent the leakage of odor.

[0017] Preferably, the top of the vacuum shell is contact-connected with a third sealing gasket, the top of the third sealing gasket is contact-connected with the bottom of the transition pipe, the top of the transition pipe is contact-connected with a fourth sealing gasket, the top of the fourth sealing gasket is contact-connected with the bottom of the first gate valve, the top of the first gate valve is contact-connected with a fifth sealing gasket, and the top of the fifth sealing gasket is contact-connected with the bottom of the U-shaped bend base.

[0018] Preferably, the bottom of the second gate valve is in contact connection with a sixth sealing gasket, and the bottom of the sixth sealing gasket is in contact connection with the inner wall of the flushing water tank.

[0019] Among them, the thickness of the gasket is determined according to the diameter of the pipe to be penetrated. Since the function of the gasket is to seal and it is compressible, the thickness of the gasket and the diameter of the pipe to be penetrated are determined according to the material of the gasket selected, the maximum compression amount of the gasket, and the maximum compression amount in actual use, so as to avoid improper selection, which may cause the pipe to be penetrated to break during use. Because the gasket is used between one or more contact surfaces, it will inevitably be subjected to pressure and produce elastic deformation. If the diameter of the pipe to be penetrated is greater than the thickness of the gasket after elastic deformation, the pipe to be penetrated will break during use; otherwise, it will work normally.

[0020] Compared with the existing technology, the beneficial effects of the present invention are: solving existing problems of toilets, such as water waste, and significantly increasing the ship's endurance on ships without fresh water generators; solving the problems of water backflow and odor in toilets; reducing users' costs in purchase and maintenance; solving the commonality of vacuum pipelines, realizing the independence of toilet vacuum, and facilitating popularization and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the connection structure between the handle and the support point of the present invention;

[0023] Figure 3 It is a schematic diagram of the connection structure of the float assembly and the flushing water tank of the present invention.

[0024] Figure: 1, first sealing gasket; 2, connecting pipe; 3, notched gasket; 4, check valve; 5, second sealing gasket; 6, vacuum housing; 7, vacuum sensor; 8, vacuum pump discharge pipe; 9, vacuum pump; 10, motor; 11, control panel; 12, vacuum pump suction pipe; 13, Rafael nozzle; 14, stop check valve; 15, third sealing gasket; 16, transition pipe; 17, first gate valve; 18, fourth sealing gasket; 19, fifth sealing gasket; 20, first pull wire; 2 1. Second pull wire; 22. U-shaped bend; 23. U-shaped bend base; 24. Ratchet rod; 25. Handle; 26. Support point; 27. Large end of U-shaped bend; 28. Toilet lid assembly; 29. ​​Flush pipe; 30. Second gate valve; 31. Sixth sealing gasket; 32. Flush water tank; 33. Vacuum chamber; 34. Power supply; 35. Sewer; 36. Ground; 37. Ratchet; 38. Spring; 39. Hollow arc; 40. Fixed rod; 41. Movable rod; 42. Float assembly. DETAILED DESCRIPTION

[0025] The present invention will be further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0026] Example 1: Please refer to Figure 1 - Figure 3 , a new type of vacuum toilet in this embodiment includes a vacuum mechanism, a flushing mechanism and a starting mechanism. The vacuum mechanism includes a vacuum shell 6, a vacuum chamber 33 is provided inside the vacuum shell 6, and a vacuum sensor 7 is fixedly connected to one side of the vacuum chamber 33. A Rafael nozzle 13 is provided inside the vacuum chamber 33. The Rafael nozzle 13 is located at the central axis of the vacuum shell 6. A support point 26 is provided between the interior of the vacuum chamber 33 and the Rafael nozzle 13. The connecting pipe 2 and the sewer 35 are connected inside the ground 36. The bottom of the vacuum shell 6 is fixedly connected to the check valve 4. The bottom of the Rafael nozzle 13 is suspended on the top of the check valve 4. The bottom of the check valve 4 is fixedly connected to the connecting pipe 2. One end of the connecting pipe 2 is fixedly connected to the sewer 35. The bottom of the vacuum shell 6 is provided with an interior;

[0027] The vacuum mechanism also includes a vacuum pump 9, which is located inside the vacuum housing 6. One end of the vacuum pump 9 is fixedly connected to a vacuum pump suction pipe 12, one end of which is located inside the vacuum chamber 33. The interior of the vacuum pump suction pipe 12 is connected to the interior of the vacuum chamber 33. The other end of the vacuum pump 9 is fixedly connected to a vacuum pump discharge pipe 8, one end of which is located inside the connecting pipe 2. One end of the vacuum pump 9 is fixedly connected to a motor 10, one end of the motor 10 is electrically connected to a power supply 34, and one end of the motor 10 is electrically connected to a control panel 11, which is fixedly connected to the interior of the vacuum housing 6.

[0028] By checking the oil level of the vacuum pump and other parameters, the power is turned on when the system is normal, and the control system is put into operation. After the vacuum sensor 7 detects a low vacuum degree, the motor 10 drives the vacuum pump 9 to operate, and the air in the vacuum chamber 33 is sucked through the vacuum pump suction pipe 12 until the set vacuum pressure (0.1MPa) is reached. The vacuum pump 9 stops operating. The start and stop set pressure of the vacuum pump is (0.05-0.1MPa);

[0029] Among them, the check valve 4: under the action of its own elastic force or magnetic force, the valve core and the valve seat are slightly fitted together. When it is subjected to the vacuum force, the contact between the valve core and the valve seat is made closer, thereby enhancing the sealing effect;

[0030] First gate valve 17: This valve is a manual valve. Before it is actuated, it relies on its own gravity and vacuum force to tightly fit the valve core and valve seat to maintain the sealing of the vacuum chamber 33;

[0031] Stop check valve 14: When the vacuum pump 9 is in operation, this valve opens, allowing the air in the vacuum chamber 33 to be discharged through the vacuum pump 9. When the set pressure in the vacuum chamber 33 is reached, the vacuum pump 9 stops rotating. At this time, one end of the stop check valve 14 is connected to the atmosphere. Under the action of the external atmospheric pressure, the valve core and the valve seat are tightly combined, preventing the backflow of air and ensuring the vacuum degree in the vacuum chamber 33.

[0032] Second gate valve 30: This valve is installed in the flushing water tank 32 and its function is to seal the water in the flushing water tank 32. This valve relies on the gravity of the water in the water tank to tightly combine the valve core and the valve seat to maintain the water tightness of the flushing water tank 32;

[0033] One end of the connecting pipe 2 is installed in the sewer 35, and the other end is between the first sealing gasket 1 and the 5-8mm notch gasket 3. Its inner wall must be absolutely smooth to reduce resistance, and its outer wall must be in close contact with the inner wall of the sewer 35 pipe; its function is to drain excrement;

[0034] When the system is just put into use or when the vacuum pressure drops to the set starting pressure, the control system (CPU) detects the signal and starts the motor 10 to drive the vacuum pump 9. At this time, the odorous and turbid air in the vacuum chamber 33 passes through the vacuum pump suction pipe 12 with a trumpet suction port, passes through the vacuum pump 9, and then through the vacuum pump discharge pipe 8 to be discharged into the sewer 35. Since the vacuum pump 9 is constantly pumping, at the same time, the vacuum sensor 7 continuously transmits the pressure signal detected to the control system (CPU). The control system (CPU) analyzes and compares the signal of the vacuum sensor 7. If the vacuum pressure reaches the set value, the control system (CPU) sends a stop signal to the motor 10 to control the motor 10 to stop; otherwise, the motor 10 continues to run.

[0035] The Rafale nozzle 13 and transition pipe 16 are installed in the vacuum chamber 33. Their function is to transport feces and other excreta from the base of the U-bend to the sewer 35. If only the vacuum force and the weight of the excreta itself were used, a large vacuum level would be consumed, making it difficult for the excreta to be discharged into the sewer 35. This would also cause a lag in the opening and closing of the first gate valve 17 and the check valve 4, directly affecting the vacuum level of the entire system. However, after installing the Rafale nozzle 13 and transition pipe 16, the excreta achieves energy conversion (gravitational potential energy and kinetic energy). This aims to accelerate the kinetic energy of the excreta discharge process, making it easier to open the check valve 4, and also consume less vacuum, making it easier for the excreta to be discharged into the sewer 35.

[0036] The connection between the Rafale nozzle 13 and the transition pipe 16, as well as the transition pipe 16 itself, is a smooth curved surface, so as to more easily receive the excrement and consume less energy, which is conducive to achieving higher energy conversion of the excrement in the Rafale nozzle 13, making it easier to discharge and maintain a vacuum degree.

[0037] The vacuum housing 6 is installed between the ground 36 and the U-shaped elbow base 23. It is hollow near the axis and mainly serves as a support and containment device. The lower end of the vacuum housing 6 is mainly used to fix valve components and pipelines. Its shape and height H1 can be designed and produced according to actual needs or according to the shape and thickness of the check valve 4. It is generally designed to be circular. The actual height and sealing condition of each component at H1 are achieved entirely by the weight of the patent itself, and no other fastening bolts are required.

[0038] The vacuum sensor 7 is installed in the vacuum chamber 33, above the diffuser of the Rafale nozzle 13, to prevent it from becoming dirty and causing a decrease in sensitivity. Its connection to the chamber must meet airtight requirements. It is also installed far from the vacuum pump inlet to avoid frequent activation of the vacuum pump 9.

[0039] The vacuum pump discharge pipe 8 is installed between the vacuum pump 9 and the sewer 35. Its function is to discharge the compressed air discharged by the vacuum pump 9 into the sewer 35. Where it passes through the 5-8mm notch gasket 3, it must be firmly sealed to prevent the return of odor.

[0040] The control panel 11 is installed in the vacuum housing 6. Its function is to control the start and stop of the vacuum pump 9 according to the detected vacuum degree to maintain the vacuum degree of the system.

[0041] The vacuum pump suction pipe 12 is installed between the vacuum chamber 33 and the vacuum pump 9, providing a suction channel for the vacuum pump 9. A diffuser pipe needs to be installed at one end of the pipe inside the vacuum chamber 33. The pipe must pass through the vacuum chamber 33 and be securely sealed to ensure good sealing. The diffuser pipe should be installed as far away from the vacuum sensor as possible. The diffuser pipe should be installed in the space between the inner wall of the vacuum chamber 33 and the Rafale nozzle, half the distance between the two, and at the upper end of three-quarters of the height of the vacuum chamber 33.

[0042] The stop check valve 14 is installed on the suction pipe 12 of the vacuum pump 9, and is close to one end of the vacuum pump 9. The purpose is to increase the total volume of the vacuum system. Its function is to open when the vacuum pump 9 starts and automatically close when the vacuum pump 9 stops, preventing the backflow of air and protecting the vacuum degree of the system, that is, separating the vacuum and non-vacuum.

[0043] The vacuum pump 9 is installed in the vacuum housing 6. Its function is to meet the vacuum pressure required for the system to work. The selection of the vacuum pump 9 is based on the volume of the vacuum chamber 33, the vacuum pressure requirement (0.05-0.1MPa), the operating time of the vacuum pump and other parameters. The inlet and outlet diameters of the vacuum pump 9 are selected appropriately according to the actual situation to facilitate the selection and installation of the vacuum pump suction pipe 12 and the vacuum pump discharge pipe 8.

[0044] The motor 10 is installed together with the vacuum pump 9 to provide power for the vacuum pump 9. The various performance parameters of the motor 10 must be matched with the vacuum pump 9. At the same time, the motor 10 meets the following characteristics: AC 220V, variable frequency, low heat generation, simple wiring, maintenance-free, long service life, and no noise;

[0045] The Rafale nozzle 13 is mounted on the central axis of the vacuum chamber 33, with its upper end tightly coupled to the transition pipe 16. The connection to the transition pipe 16 can be split or integral, meaning the two pipes can be machined together or separately. The connection between the Rafale nozzle 13 and the transition pipe 16 is smooth and seamless, minimizing resistance during excrement discharge. To further secure the Rafale nozzle 13, a fixed support can be added to the middle of the Rafale nozzle 13.

[0046] The end of the Rafale nozzle 13 is suspended and maintained at a certain height relative to the check valve 4. The height is determined by the distance the excrement moves from the end of the Rafale nozzle 13 to the point where its kinetic energy reaches its maximum after leaving the end of the Rafale nozzle 13. The height between the check valve 4 and the end of the Rafale nozzle 13 is determined by the distance the excrement moves from the end of the Rafale nozzle 13 to the point where its kinetic energy reaches its maximum. The function of the Rafale nozzle 13 is to convert the excrement's energy during its downward movement, ultimately obtaining a higher kinetic energy that opens the check valve 4 and allows the excrement to be discharged into the sewer 35. This is to allow the kinetic energy of the excrement to freely open the check valve 4.

[0047] The transition pipe 16 is installed between the Rafale nozzle 13 and the fourth sealing gasket 18. It has a boss at its upper end and is sealed by the third sealing gasket 15 before being fixed to the vacuum housing 6. The vacuum housing 6 is not bolted, but is sealed and fixed solely by the gravity of the upper end of the U-shaped bend base 23 and its accessories. The transition pipe 16 has a tapered trumpet shape and a smooth parabolic surface. The diameter of the upper end of the transition pipe 16 is larger than that of the lower end, while the diameter of the lower end is the same as that of the upper end of the Rafale nozzle 13. The joints and transitions between the various parts are mirror-smooth and traceless, aiming to reduce the downward drag of excrement.

[0048] The vacuum chamber 33 is located at or near the central axis of the vacuum housing 6 and is used to accommodate major components such as the Rafale nozzle 13 and the transition pipe 16 .

[0049] Example 2: This example introduces the specific structure of the flushing mechanism, which includes a flushing water tank 32. The bottom of the flushing water tank 32 is fixedly provided with a second gate valve 30. The bottom of the second gate valve 30 is fixedly connected to a flushing pipe 29. One end of the flushing pipe 29 is fixedly connected to a toilet lid assembly 28. The bottom of the toilet lid assembly 28 is fixedly connected to a large end 27 of a U-shaped elbow. The bottom of the U-shaped elbow 22 is fixedly connected to the U-shaped elbow 22. One end of the U-shaped elbow 22 is fixedly connected to a U-shaped elbow base 23. The bottom of the U-shaped elbow base 23 is fixedly connected to a first gate valve 17. The bottom of the first gate valve 17 is fixedly connected to a transition pipe 16. The bottom of the transition pipe 16 is fixedly connected to the top of the Rafale nozzle 13.

[0050] The two ends of the U-shaped bend 22 are respectively connected to the large end 27 of the U-shaped bend and the base 23 of the U-shaped bend, so that during the flushing process of excrement, the U-shaped bend 22 continuously forms a seal to prevent the return of odor and the complete loss of vacuum. The inner wall of the connection between the two ends of the U-shaped bend 22 is polished into a smooth parabola during manufacturing to reduce the resistance of excrement. The toilet cover assembly 28 is connected to the flushing water tank 32 and its components via the flushing pipe 29 for flushing excrement.

[0051] The total water consumption required (to complete the discharge of one excrement) is determined according to the curvature and height of the U-shaped bend 22, so as to achieve the purpose of water saving, that is, the curvature and height parameters of the U-shaped bend 22 directly affect the amount of water consumption. The smaller the curvature and height parameters of the U-shaped bend 22, the smaller the total water consumption, and vice versa. The total water consumption can be used as two parts: first, the amount of water retained at the U-shaped bend 22 is equal to 1 / 3 of the total water consumption, which is used to participate in sealing; second, the remaining 2 / 3 of the total water consumption is used to clean the excrement remaining in the pipeline. In order to achieve the purpose of more water saving, 1 / 3 of the total water consumption can also be used to clean the excrement remaining in the pipeline, and the remaining 1 / 3 is directly left in the flushing water tank 32. In short, any method can be selected according to actual conditions. The diameters of the U-shaped bend 22, the U-shaped bend base 23, and the large end 27 of the U-shaped bend are relatively small, thereby achieving a water-saving effect.

[0052] The U-shaped bend base 23 is installed between the fifth sealing gasket 19 and the U-shaped bend 22. Its shape is thin at the upper end and wide at the lower end, and the connection with the U-shaped bend 22 is smooth. The purpose is to better connect and exert product performance; the lower end is approximately H-shaped, the purpose is to better accommodate components such as valves and gaskets. The components above the U-shaped bend base 23 must have a sufficient total weight to compact H2 to achieve complete sealing. The thickness of the three sealing gaskets 15, the first gate valve 17, the transition pipe 16, the fourth sealing gasket 18, and the fifth sealing gasket 19 is slightly greater than the height of H2 by 2-3 mm. The purpose is to make these five parts have sufficient redundancy to ensure complete sealing.

[0053] The large end 27 of the U-shaped bend is installed between the U-shaped bend 22 and the toilet lid assembly 28. It is trumpet-shaped and has an absolutely smooth inner wall. The toilet lid assembly 28 is installed on it. Its function is to accommodate and receive excrement, etc. The connection with the U-shaped bend 22 is smooth and seamless. On one side of the large end 27 of the U-shaped bend, it is connected to the flushing pipe 29. Flushing holes are opened in the circumference of the upper end of the large end 27 of the U-shaped bend. The flushing holes are evenly distributed at the upper edge of the large end 27 of the U-shaped bend. After clean water flows down the flushing pipe 29, it directly enters the flushing holes and flushes the large end 27 of the U-shaped bend.

[0054] The toilet cover assembly 28 includes: a toilet cover, a toilet seat, a coupling, a toilet pad and other main components, which are installed on the large end 27 of the U-shaped elbow, and its shape and size match the large end 27 of the U-shaped elbow;

[0055] The second gate valve 30 is fixed in the flushing water tank 32 with bolts, and the first pull wire 20 is connected to it for manual opening of the valve. The function of the second gate valve 30 is to seal the flushing water in the flushing water tank 32 and control the on and off of the flushing water. The second gate valve 30 is a self-closing valve with its own elastic force or magnetic force, and the axis of the elastic force and the valve core are at the same end, or the magnetic force and the valve core axis are at opposite ends; the requirements for the elastic force or magnetic force are: in the natural state, the valve core is in a vertical position for the maximum opening of this valve. When the pulling force disappears, under the action of the tiny elastic force or magnetic force, only 1 / 5 of the valve core opening can be closed, and the remaining 4 / 5 is completely dependent on the valve core's own gravity and the gravity of the water to seat the valve core.

[0056] Example 3: This example describes the specific structure of the starting mechanism, which includes a handle 25, one end of the handle 25 is fixedly connected to the ratchet rod 24, one end of the ratchet rod 24 is fixedly connected to the ratchet 37, one end of the ratchet 37 is fixedly connected to the fixed rod 40, one end of the fixed rod 40 is fixedly connected to the second pull wire 21, one end of the ratchet 37 is movably connected to the movable rod 41, one end of the movable rod 41 is fixedly connected to the first pull wire 20, and one end of the first pull wire 20 is fixedly connected to one end of the second gate valve 30;

[0057] When excrement enters the toilet lid assembly 28, the handle 25 is first pulled. Since the handle 25 is connected to the ratchet rod 24, and the ratchet rod 24 is respectively connected to the first pull wire 20 and the second pull wire 21, wherein the length of the first pull wire 20 is greater than the length of the second pull wire 21, when the handle 25 is rotated, the second pull wire moves first, causing the first gate valve 17 to move and open, and then the first pull wire moves again, causing the second gate valve 30 to move and open. The time interval between the two valve activities is 3 / 4 of the 90° arc, so that just after the excrement completely leaves the lowest end of the U-shaped bend 22, the flushing water immediately flows down from the flushing water tank 32, playing a flushing and sealing role. The length of time the handle 25 is rotated and opened can be controlled to determine the length of the flushing time.

[0058] After the first gate valve 17 is actuated, the excreta temporarily stored in the U-bend 22 will be moved from the U-bend 22 into the vacuum chamber 33 under the action of the vacuum force. While the excreta in ordinary toilets is discharged directly from the U-bend 22 into the sewer by the flushing action of flushing water, in this device, the excreta is discharged from the U-bend 22 into the vacuum chamber 33 entirely by the action of the vacuum force, without the need for any water flushing. At the same time, the excreta is not discharged directly into the sewer 35, but enters the Rafale nozzle 13, undergoing energy conversion. When the excreta reaches maximum kinetic energy, it flushes the check valve 4, allowing the excreta to be discharged into the sewer 35. The check valve 4 is quickly closed after the discharge is completed.

[0059] The excrement leaves the U-shaped bend 22 and the washing water leaves the flushing water tank 32 almost simultaneously, but the time when the excrement completely leaves the end of the U-shaped bend 22 is slightly later than the time when the washing water enters the beginning of the U-shaped bend 22, about 2-3 seconds later, thereby reducing the amount of washing water used and ensuring that the vacuum degree is not completely destroyed, in order to achieve the purpose of saving water;

[0060] Under the action of vacuum force, the excrement passes through the smooth U-shaped bend base 23 and the transition pipe 16 and directly enters the Rafale nozzle 13 with almost no energy loss. In the Rafale nozzle 13, the excrement undergoes energy conversion and obtains high kinetic energy, so that the check valve 4 can be opened quickly and the excrement is discharged into the sewer 35. This can better maintain the vacuum degree, reduce the number of starts and stops of the vacuum pump 9, and extend the service life of the vacuum pump 9.

[0061] After the excrement and cleaning water are discharged into the sewer 35, the first gate valve 17 and the check valve 4 are not only automatically closed by their own elastic force or magnetic force, but are also affected by the vacuum force. In this way, under the action of multiple external forces, the valves can be quickly closed, avoiding the complete destruction of the vacuum degree and maintaining a certain vacuum degree. By providing the check valve 4 and the first gate valve 17 with the effect of vacuum force, the two are closed as soon as possible. At the same time, the operating time of the vacuum pump 9 is also reduced. Among them, the closing time of the first gate valve 17 is 2-4 seconds earlier than the closing time of the check valve 4, that is, the time when the cleaning water enters the Rafale nozzle 13;

[0062] After the handle 25 is manually pulled to the flushing position and released, the ratchet lever 24, under the action of the set spring force, controls the different reset speeds and reset time intervals of the first gate valve 17 and the second gate valve 30, respectively, so that the first gate valve 17 and the second gate valve 30 are closed almost simultaneously, wherein the first gate valve 17 is closed in advance;

[0063] The water in the flushing tank 32 can be considered as two parts. One part is used as cleaning water. That is, once the excrement begins to leave the U-shaped bend 22, the cleaning water immediately enters the U-shaped bend 22 and cleans the path of the excrement, playing the role of cleaning the pipeline. Note: Since the cleaning water follows the excrement, part of the cleaning water will also be affected by the vacuum force, which will make the U-shaped bend 22 and its pipelines clean more thoroughly.

[0064] A portion of the water is used as sealing water, that is, the remaining cleaning water is used to fill the U-shaped bend 22. Its function is to detect the sealing of the first gate valve 17 and prevent the leakage of odor. Therefore, after the cleaning water cleans the pipeline, the first gate valve 17 is immediately closed, and the second gate valve 30 is in an open state at this time. It can not be closed until the sealing water fills the U-shaped bend 22. Therefore, the time when the first gate valve 17 is closed in advance is generally when the sealing water fills the U-shaped bend 22.

[0065] During operation, the power part that maintains the vacuum degree generally does not participate in the work, unless the system vacuum degree is too low. At this time, only the vacuum sensor 7 is in continuous monitoring, and the stop check valve 14 is always in a closed state and does not participate in any action. Only when the vacuum sensor 7 detects that the vacuum pressure drops to the set value, the control system starts to work and sends a signal to control the motor 10 to drive the vacuum pump 9 to operate until the vacuum degree reaches the set value. The vacuum pump 9 stops running and finally maintains the set true pressure to prepare for the next use.

[0066] During the cleaning process of the cleaning water, a suitable vacuum degree is maintained. Although the vacuum force does not participate in the cleaning action, during the cleaning process, as long as the vacuum pressure is lower than the vacuum pressure setting value, the vacuum pump 9 will be activated to keep the vacuum degree within the appropriate pressure range, thereby providing auxiliary restoring force for the check valve 4 and the first gate valve 17.

[0067] In some examples, a hollow arc 39 is formed at one end of the ratchet 37, and a movable rod 41 is movably connected to the interior of the hollow arc 39. Support points 26 are provided at both ends of the ratchet rod 24, and a spring 38 is fixedly connected to one end of the ratchet rod 24.

[0068] The hollow arc 39 is a 3 / 4 hollow portion of a 90° arc dug out on the 90° ratchet 37, which is used to position and limit the movement of the movable rod 41, thereby delaying the opening of the second gate valve 30. The fixed rod 40 is installed on the ratchet 37, parallel to the ratchet rod 24 and perpendicular to the handle 25, and is used to fix and connect the second pull wire 21, whose maximum movement angle is 90° and bears the effect of tension. The movable rod 41 is installed on the hollow arc 39, one end of which passes through the hollow arc 39 and is positioned with two bayonet pins to prevent it from sliding out of the hollow arc 39; the other end is used to connect and fix the first pull wire 20, whose maximum movement angle is 22.5, and bears a certain pulling force.

[0069] One end of the first pull wire 20 is connected to the second gate valve 30, and the other end is connected to the movable rod 41 of the ratchet 37, playing a role in force transmission, and the connection form of the movable rod 41 on the ratchet 37. One end of the second pull wire 21 is connected to the first gate valve 17, and the other end is connected to the fixed rod 40 of the ratchet 37, playing a role in force transmission, and the connection form of the fixed rod 40 on the ratchet 37. The first pull wire 20 and the second pull wire 21 are selected from corrosion-resistant and stress-resistant materials, such as nylon rope, steel wire rope, etc.

[0070] The ratchet lever 24 is mounted on the support point 26 and serves as a carrier for the various components, transmitting force. A ratchet 37 is mounted on one end of the ratchet lever to position the second valve 30 controlled by the first cable 20 and the first valve 17 controlled by the second cable 21. The relative opening and closing sequence and timing of the second valve 30 and the first valve 17 are controlled by the different positions of the first and second cables on the ratchet 37.

[0071] The handle 25 has a maximum rotation angle of 90° and automatically resets due to the elastic force of the spring 38. The second pull wire 21 is connected to the fixed rod 40, and the fixed rod 40 and the handle 25 are in a perpendicular position. The handle 25 is directly mounted on the ratchet rod 24. The first pull wire 20 is connected to the movable rod 41, and the movable rod 41 moves within a 90-degree arc through a 3 / 4 arc, that is, the movable rod 41 moves within the hollow arc 39 through a 90° x 3 / 4 arc.

[0072] After the handle 25 performs the opening action, the first gate valve 17 is required to open first. When it opens 3 / 4 of the 90° arc, the second gate valve 30 begins to open. When the first gate valve 17 is fully opened (the valve core moves 90°), the second gate valve 30 is fully opened (the movable rod 41 moves 1 / 4 of the 90° arc). Among them, the handle 25 and the ratchet 37 and their accessories only control the opening process of the first gate valve 17 and the second gate valve 30. When the two valves are closed, they are only affected by the gravity and elastic or magnetic forces of the valve components themselves, so as to better achieve the closing order of the two valves.

[0073] After the handle 25 is closed, first, the first gate valve 17 is required to close quickly (by the valve's own gravity and elastic force or magnetic force) to prevent the vacuum from decreasing; second, the second gate valve 30 is closed. Before closing, it is necessary to ensure that the water in the flushing tank 32 has completely cleaned the pipeline and formed a water seal at the U-shaped bend 22.

[0074] The ratchet 37 is used to fix and position the fixed rod 40 and the movable rod 41. The spring 38 is installed at the end of the ratchet rod 24 to provide a corresponding restoring force to the ratchet rod 24;

[0075] The hollow arc 39 is a 3 / 4 hollow portion of a 90° arc carved out of the 90° ratchet 37, and is used to position and limit the movement of the movable rod 41, thereby delaying the opening of the second gate valve 30;

[0076] The fixing rod 40 is mounted on the ratchet 37, parallel to the ratchet rod 24 and perpendicular to the handle 25, and is used to fix and connect the second pull wire 21. Its maximum movement angle is 90 degrees and it bears the effect of tension;

[0077] The movable rod 41 is mounted on the hollow arc 39, with one end passing through the hollow arc 39 and positioned with two bayonet pins to prevent it from sliding out of the hollow arc 39; the other end is used to connect and fix the first pull wire 20, with a maximum movement angle of 22.5 and bear a certain pulling force;

[0078] The support point 26 is installed at an appropriate position of the toilet cover assembly 28, etc., to support the ratchet rod 24, the ratchet 37 and its accessories; generally, two support points are provided, one on each side of the ratchet 37;

[0079] The handle 25 is mounted at the end of the ratchet rod 24 and is used to transmit external force to the ratchet rod 24 and its components, and serves to connect the ratchet rod 24; it is perpendicular to the fixed rod 40;

[0080] The flushing pipe 29 is installed between the flushing water tank 32 and the toilet cover assembly 28 to transmit clean water. According to the actual reasonable arrangement of the pipeline, the flushing water tank 32 and the toilet cover assembly 28 can be made into an integral or separate type. The flushing water tank 32 is installed at the top of the flushing pipe 29.

[0081] The float assembly 42 is installed in the flushing water tank 32 , and a valve in the float assembly 42 is installed on the water inlet pipe of the flushing water tank 32 for controlling the set water level in the flushing water tank 32 .

[0082] Example 4: This example describes the specific structure of the gasket. The top of the connecting pipe 2 is externally contact-connected with a first sealing gasket 1. The bottom of the first sealing gasket 1 is contact-connected with the top surface of the ground 36. The top of the check valve 4 is contact-connected with a second sealing gasket 5. The top of the second sealing gasket 5 is contact-connected with the bottom of the vacuum housing 6. The top of the connecting pipe 2 is contact-connected with a notched gasket 3. The top of the notched gasket 3 is contact-connected with the bottom of the check valve 4. One end of the notched gasket 3 is machined with a notch. The bottom end of the vacuum pump discharge pipe 8 passes through the notch of the notched gasket 3.

[0083] The first sealing gasket 1 is installed at the bottom of the connecting pipe 2 and is used to seal between the connecting pipe 2 and the ground 36 to prevent the overflow of sewer odor. The material is selected according to actual needs, generally rubber, plastic and other materials;

[0084] The notched gasket 3 is installed between the connecting pipe 2 and the check valve 4. It has two functions: one is sealing, and the other is arranging the pipeline so that the vacuum pump discharge pipe 8 can communicate with the sewer 35.

[0085] Specific structure of notched washer 3:

[0086] First, according to the diameter of the vacuum pump discharge pipe 8, a size corresponding to the same diameter is cut from the gasket. First, the thickness of the selected gasket (the thickness after compression during use) is slightly larger than the diameter of the vacuum pump discharge pipe 8 by 5-8 mm. Second, in order not to affect the original function of the gasket, two L-shaped reinforcement pads are installed at both ends of the cut-off part of the gasket to maintain the original performance of the gasket. The material properties of the L-shaped reinforcement pads (such as hardness and ductility) are similar to those of the gasket material, so as to form a better seal in the cut-off part. Finally, the vacuum pump discharge pipe 8 is laid between the two L-shaped reinforcement pads. This design of the gasket can maintain the original performance of the gasket while increasing its use function.

[0087] Second, the thickness of the selected gasket (the thickness after compression during use) should be slightly larger than the diameter of the vacuum pump discharge pipe 8 (5-8 mm). Secondly, according to the outer diameter of the pipe to be penetrated, a hole should be punched in the middle (thickness) of the gasket to facilitate the penetration of the pipe. In order to avoid damaging the original sealing performance of the gasket, the diameter of the hole should be slightly smaller than the outer diameter of the pipe to be penetrated (2-3 mm smaller) so that the appropriate degree of compression is maintained when the pipe is penetrated, thereby achieving a better seal.

[0088] In actual use, without affecting the sealing performance of the gasket and the performance of the pipe to be penetrated, the pipe to be penetrated should have high elasticity, plasticity and compressibility, and the diameter of the pipe to be penetrated (with elasticity and compressibility) should match the actual thickness of the gasket (after compression). At the same time, the gasket and the pipe to be penetrated should be made of similar materials to better maintain the sealing performance of the gasket. If the elasticity and compressibility of the pipe to be penetrated cannot be met, the relationship between the gasket thickness (maximum compression size) and the outer diameter of the pipe to be penetrated needs to be fully considered to avoid failure and loss.

[0089] Furthermore, the top of the vacuum housing 6 is contact-connected with a third sealing gasket 15, the top of the third sealing gasket 15 is contact-connected with the bottom of the transition pipe 16, the top of the transition pipe 16 is contact-connected with a fourth sealing gasket 18, the top of the fourth sealing gasket 18 is contact-connected with the bottom of the first gate valve 17, the top of the first gate valve 17 is contact-connected with a fifth sealing gasket 19, the top of the fifth sealing gasket 19 is contact-connected with the bottom of the U-shaped bend base 23, the bottom of the second gate valve 30 is contact-connected with a sixth sealing gasket 31, and the bottom of the sixth sealing gasket 31 is contact-connected with the inner wall of the flushing water tank 32.

[0090] The second sealing gasket 5 is installed on the check valve 4 and is in close contact with the base of the vacuum shell 6, thereby playing a sealing role. The third sealing gasket 15 is installed at the bottom of the transition pipe 16 and is in close contact with the top of the vacuum shell 6, thereby playing a sealing role. The fourth sealing gasket 18 is installed between the transition pipe 16 and the first gate valve 17, thereby sealing the two contact surfaces; the fifth sealing gasket 19 is installed on the first gate valve 17, thereby in close contact with the base of the U-shaped bend base 23, thereby sealing the two contact surfaces; the sixth sealing gasket 31 is installed below the second gate valve 30, thereby in close contact with the ground of the flushing water tank 32, thereby sealing the two contact surfaces.

[0091] Working principle: When excrement enters from the toilet cover assembly 28, the handle 25 is pulled first, and the handle 25 drives the second pull wire to move first, so that the first gate valve 17 moves and opens first. Under the action of the vacuum inside the vacuum chamber 33, the excrement passes through the smooth U-shaped bend 22 and the U-shaped bend base 23 with basically no energy loss, and directly enters the transition pipe 16 and the Rafale nozzle 13. In the Rafale nozzle 13, the excrement obtains higher kinetic energy after energy conversion, so that the check valve 4 can be opened quickly, so that the excrement can be discharged into the sewer 35. At the same time, the handle 25 continues to move to drive the first pull wire to move, so that the second gate valve 30 moves and opens, so that the cleaning water leaves the flushing water tank 32, passes through the flushing pipe 29 and the large end 27 of the U-shaped bend, and reaches the bottom of the U-shaped bend 22, which plays a flushing and sealing role, thereby reducing the waste of water resources for flushing the toilet.

[0092] The above embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and replacements made by technicians in this field on the basis of the present invention fall within the scope of protection required by the present invention.

Claims

1. A new type of vacuum toilet, including a vacuum mechanism, a flushing mechanism and a starting mechanism, characterized in that: The vacuum mechanism comprises a vacuum shell (6), a vacuum chamber (33) is provided inside the vacuum shell (6), a vacuum degree sensor (7) is fixedly connected to one side of the vacuum chamber (33), a Rafael nozzle (13) is provided inside the vacuum chamber (33), the Rafael nozzle (13) is located at the central axis of the vacuum shell (6), the interior of the vacuum chamber (33) is connected to the interior of the Rafael nozzle (13), a check valve (4) is fixedly connected to the bottom of the vacuum shell (6), the bottom of the Rafael nozzle (13) is suspended on the top of the check valve (4), the bottom of the check valve (4) is fixedly connected to a connecting pipe (2), one end of the connecting pipe (2) is fixedly connected to a sewer (35), a support point (26) is provided at the bottom of the vacuum shell (6), and the connecting pipe (2) and the sewer (35) are located inside the ground (36); The flushing mechanism comprises a flushing water tank (32), a second gate valve (30) is fixedly connected to the bottom of the flushing water tank (32), a flushing pipe (29) is fixedly connected to the bottom of the second gate valve (30), one end of the flushing pipe (29) is fixedly connected to the toilet cover assembly (28), the bottom of the toilet cover assembly (28) is fixedly connected to the large end (27) of the U-shaped bend pipe, the bottom of the U-shaped bend pipe (22) is fixedly connected to the U-shaped bend pipe (22), one end of the U-shaped bend pipe (22) is fixedly connected to the U-shaped bend pipe base (23), the bottom of the U-shaped bend pipe base (23) is fixedly connected to the first gate valve (17), the bottom of the first gate valve (17) is fixedly connected to the transition pipe (16), the bottom of the transition pipe (16) is fixedly connected to the top of the Rafale nozzle (13), and a float assembly (42) is provided inside the flushing water tank (32); Secondly, the starting mechanism includes a handle (25), one end of the handle (25) is fixedly connected to a ratchet rod (24), one end of the ratchet rod (24) is fixedly connected to a ratchet (37), one end of the ratchet (37) is fixedly connected to a fixed rod (40), one end of the fixed rod (40) is fixedly connected to a second pull wire (21), one end of the ratchet (37) is movably connected to a movable rod (41), one end of the movable rod (41) is fixedly connected to a first pull wire (20), and one end of the first pull wire (20) is fixedly connected to one end of the second gate valve (30).

2. A new type of vacuum toilet according to claim 1, characterized in that: The vacuum mechanism further includes a vacuum pump (9), the vacuum pump (9) being located inside the vacuum housing (6), one end of the vacuum pump (9) being fixedly connected to a vacuum pump suction pipe (12), one end of the vacuum pump suction pipe (12) being provided with a stop check valve (14), one end of the vacuum pump suction pipe (12) being located inside the vacuum chamber (33), the interior of the vacuum pump suction pipe (12) being connected to the interior of the vacuum chamber (33), the other end of the vacuum pump (9) being fixedly connected to a vacuum pump discharge pipe (8), one end of the vacuum pump discharge pipe (8) being located inside the connecting pipe (2).

3. A new type of vacuum toilet according to claim 2, characterized in that: One end of the vacuum pump (9) is fixedly connected to a motor (10), one end of the motor (10) is electrically connected to a power supply (34), one end of the motor (10) is electrically connected to a control panel (11), and the control panel (11) is fixedly connected to the interior of the vacuum housing (6).

4. A novel vacuum toilet according to claim 1, characterized in that: A hollow arc (39) is formed at one end of the ratchet (37), and the movable rod (41) is movably connected to the interior of the hollow arc (39). Support points (26) are provided at both ends of the ratchet rod (24), and a spring (38) is fixedly connected to one end of the ratchet rod (24).

5. A novel vacuum toilet according to claim 1, characterized in that: The top of the connecting pipe (2) is externally contact-connected with a first sealing gasket (1), the bottom of the first sealing gasket (1) is contact-connected with the top surface of the ground (36), the top of the check valve (4) is contact-connected with a second sealing gasket (5), and the top of the second sealing gasket (5) is contact-connected with the bottom of the vacuum housing (6).

6. A novel vacuum toilet according to claim 2, characterized in that: The top of the connecting pipe (2) is contact-connected with a notched gasket (3), the top of the notched gasket (3) is contact-connected with the bottom of the check valve (4), one end of the notched gasket (3) is machined with a notch, and the bottom end of the vacuum pump discharge pipe (8) passes through the notch of the notched gasket (3).

7. A novel vacuum toilet according to claim 1, characterized in that: The top of the vacuum shell (6) is in contact connection with a third sealing gasket (15), the top of the third sealing gasket (15) is in contact connection with the bottom of the transition pipe (16), the top of the transition pipe (16) is in contact connection with a fourth sealing gasket (18), the top of the fourth sealing gasket (18) is in contact connection with the bottom of the first gate valve (17), the top of the first gate valve (17) is in contact connection with a fifth sealing gasket (19), and the top of the fifth sealing gasket (19) is in contact connection with the bottom of the U-shaped elbow base (23).

8. A novel vacuum toilet according to claim 1, characterized in that: The bottom of the second gate valve (30) is contact-connected with a sixth sealing gasket (31), and the bottom of the sixth sealing gasket (31) is contact-connected with the inner wall of the flushing water tank (32).

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