High frequency vacuum toilet

Abstract

This application discloses a high-frequency vacuum toilet bowl, belonging to the field of sanitary ware technology. It provides a high-frequency vacuum toilet bowl that makes it easier to control the pressure difference between the inside and outside of the bowl and reduces the likelihood of backflow odor. The bowl includes an upward-facing toilet bowl with a cover fixedly connected to its upper end. A sealing ring is provided between the cover and the bowl. The cover is connected to a drainage pipe via a suction end, and the drainage pipe is equipped with an electrically controlled on / off valve. The cover has a configuration window that extends through both the upper and lower surfaces, and a baffle is installed inside the configuration window. A vacuum chamber is covered by the cover over the configuration window. The vacuum chamber is connected to a suction pipe via a pipe joint, and the suction pipe is equipped with an electric ball valve. The other end of the suction pipe is connected to a vacuum pump. This application utilizes an electrically controlled on / off valve on the drainage pipe. When energized, the valve can quickly and continuously switch between on and off states, intermittently allowing high-speed airflow into the bowl. This prolongs the time it takes for the pressure difference between the inside and outside of the bowl to reach equilibrium, thereby effectively reducing the probability of odor overflow and backflow odor.

Description

Technical Field

[0001] This application relates to the field of sanitary ware technology, and in particular to a high-frequency vacuum toilet. Background Technology

[0002] Since airplanes and trains cannot connect to ground-based sewage pipes, vacuum toilets are required. Existing vacuum toilets typically have a normally open or normally closed valve at the suction end. When collecting waste, the valve changes from the normally closed state to the normally open state, and a high-speed airflow quickly rushes into the toilet, causing the atmospheric pressure inside and outside the toilet to quickly equalize, which can easily lead to backflow of odors. Summary of the Invention

[0003] The purpose of this application is to provide a high-frequency vacuum toilet that is easier to control the internal and external air pressure difference and less prone to backflow of odor.

[0004] To achieve the above objectives, this application provides a high-frequency vacuum toilet: including a toilet bowl with an upward-facing opening, a cover fixedly connected to the upper end of the toilet bowl, a sealing ring provided between the cover and the toilet bowl, a drainage pipe connected to the cover via a suction end, an electrically controlled on / off valve configured in the drainage pipe, a configuration window penetrating the upper and lower surfaces of the cover, a baffle plate provided inside the configuration window, a vacuum chamber covered by the cover on the configuration window, an air extraction pipe connected to the vacuum chamber via a pipe connection end, an electric ball valve configured in the air extraction pipe, and a vacuum pump connected to the other end of the air extraction pipe, which is the main component for extracting air from the toilet bowl to form a vacuum environment.

[0005] As a preferred embodiment, the pipe connection is located at the top of the vacuum chamber, and a filter cover located below the pipe connection is fixedly connected to the inner top of the vacuum chamber to prevent finer contaminants from entering the extraction pipe.

[0006] As a preferred embodiment, the vacuum pump has an inlet end and an exhaust grille, and the extraction pipe is fixedly connected to the inlet end away from the vacuum chamber to form a complete extraction channel.

[0007] As a preferred embodiment, the vacuum pump is equipped with a deodorizing filter element inside the exhaust grille to reduce the diffusion of odors during the pumping process.

[0008] As a preferred embodiment, the upper end of the toilet bowl has an outwardly extending support frame, and the upper surface of the support frame has a lower recess. The sealing ring is installed in the lower recess, so that a sealed space is formed between the cover and the toilet bowl.

[0009] As a preferred embodiment, the cover is pressed against the upper surface of the support frame and is adapted to be fixedly connected to the support frame by bolts, while also being fixedly connected to the mounting platform, thus simplifying the installation process.

[0010] As a preferred embodiment, the main body of the drainage tube is a U-shaped section with two upper ends. One upper end extends upward and is fixedly connected to a connecting flange, while the other upper end bends downward and connects to the suction end. The U-shaped section stores a small amount of clean water, which can effectively reduce backflow odor.

[0011] As a preferred embodiment, the lower surface of the cap is fixedly connected to an extension tube located at the lower end of the suction end, and the electrically controlled on / off valve is located at the downward-bending end of the U-shaped part, ensuring that the main body of the U-shaped part is not blocked by the electrically controlled on / off valve, and that it can be fully filled with clean water for odor prevention.

[0012] Compared with the prior art, the beneficial effects of this application are as follows:

[0013] (1) By equipping the drainage tube with an electrically controlled on / off valve, the electrically controlled on / off valve can quickly and continuously switch on / off states when energized, allowing high-speed airflow to enter the toilet bowl intermittently, extending the time for the air pressure inside and outside the toilet bowl to reach equilibrium, thus making it easier to control the air pressure difference inside and outside the toilet bowl during a single collection process, and making it easier to control the toilet bowl to complete the collection work before the air pressure difference inside and outside is balanced, effectively reducing the probability of odor overflow and back odor phenomenon in the toilet bowl;

[0014] (2) By setting a U-shaped part in the drainage pipe, a small amount of clean water can be stored in the U-shaped part, which further reduces the backflow of odor. The toilet environment will be fresher when the toilet is in use. Attached Figure Description

[0015] Figure 1 This is a first three-dimensional schematic diagram of the overall structure of the high-frequency vacuum toilet.

[0016] Figure 2 This is a second three-dimensional schematic diagram of the overall structure of the high-frequency vacuum toilet.

[0017] Figure 3 This is a three-dimensional structural diagram of the fitting of the side panel and the cover of the high-frequency vacuum toilet.

[0018] Figure 4 This is a three-dimensional structural diagram showing the connection between the drain pipe and the cover of the high-frequency vacuum toilet.

[0019] Figure 5 This is a three-dimensional structural diagram of the drainage pipe of the high-frequency vacuum toilet.

[0020] Figure 6 This is a three-dimensional structural diagram of the cover of the high-frequency vacuum toilet.

[0021] Figure 7 This is a three-dimensional cross-sectional view of the toilet bowl of the high-frequency vacuum toilet.

[0022] Figure 8This is a three-dimensional cross-sectional view of the vacuum pump of the high-frequency vacuum toilet connected to the vacuum chamber via an air extraction pipe.

[0023] Figure 9 This is a three-dimensional cross-sectional view of the vacuum chamber of the high-frequency vacuum toilet.

[0024] Figure 10 This is a three-dimensional structural diagram of the side panel of the high-frequency vacuum toilet.

[0025] In the diagram: 1. Drainage pipe; 101. U-shaped part; 102. Connecting flange; 2. Electrically controlled on / off valve; 3. Cover; 301. Suction end; 302. Extension pipe; 303. Configuration window; 4. Toilet bowl; 401. Support frame; 402. Lower groove; 5. Balustrade; 6. Vacuum chamber; 601. Pipe connection end; 602. Filter cover; 7. Suction pipe; 8. Electric ball valve; 9. Vacuum pump; 901. Air inlet end; 902. Exhaust grille; 10. Sealing ring. Detailed Implementation

[0026] The present application will be further described below with reference to specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0027] In the description of this application, it should be noted that the directional terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this application.

[0028] It should be noted that the terms "first," "second," etc., in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0029] The terms “comprising” and “having”, and any variations thereof, in the specification and claims of this application are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or device.

[0030] like Figure 1-10The high-frequency vacuum toilet shown includes a toilet bowl 4 with an upward-facing opening. The toilet bowl 4 is rectangular with rounded corners to effectively avoid stress concentration and is typically made of stainless steel. A cover 3, also made of stainless steel, is fixedly connected to the upper end of the toilet bowl 4. A rubber sealing ring 10 is provided between the cover 3 and the toilet bowl 4 to create a sealed environment. The upper end of the toilet bowl 4 has an outwardly extending support frame 401. The support frame 401 is rectangular and is in the same plane as the upper surface of the toilet bowl 4. A lower groove 402 is formed on the upper surface of the support frame 401. The lower grooves 402 are connected end to end to form a closed rectangle. The sealing ring 10 is installed in the lower groove 402. The cover 3 presses against the upper surface of the support frame 401 and is pressed tightly against the sealing ring 10 to form a sealing surface. The cover 3 can be fixedly connected to the support frame 401 by bolts. The bolts can simultaneously fix the toilet bowl 4 and the cover 3 to the mounting platform.

[0031] The cap 3 is connected to a drainage pipe 1 via a suction end 301, which serves as a displacement channel for feces and sewage to enter the toilet bowl 4. The drainage pipe 1 is equipped with an electrically controlled on / off valve 2, which can be controlled to open and close at high frequency. The electrically controlled on / off valve 2 is normally closed. By controlling the duration of the on / off switching, the amount of feces and sewage entering the toilet bowl 4 can be adjusted. The main body of the drainage pipe 1 is a U-shaped section 101, which has two upper ends. One of the upper ends extends upward and is fixedly connected to a connecting flange 102 for connecting to the discharge end of a toilet or squat toilet. Next, the other end bends downward and is fixedly connected to the suction end 301. The lower surface of the cover 3 is fixedly connected to the extension tube 302 located at the lower end of the suction end 301. The extension tube 302 has a larger inner diameter and completely covers the lower end of the suction end 301. The extension tube 302 is not vertical but inclined, which allows feces and sewage to slide down into the toilet bowl 4 along the inclined direction. The electrically controlled on / off valve 2 is located at the downward bend end of the U-shaped part 101, so that the main body of the U-shaped part 101 can store an appropriate amount of clean water to isolate odor.

[0032] The cover 3 has a configuration window 303 that runs through the upper and lower surfaces, which is a channel for air to leave the toilet bowl 4. A baffle 5 is installed inside the configuration window 303, and the baffle 5 has several vertically connected guide grooves. During the vacuuming operation inside the toilet bowl 4, large volume insoluble matter, such as plastic bags, is prevented from passing through the configuration window 303. The cover 3 covers the configuration window 303 with a vacuum chamber 6, which actually prevents large volume insoluble matter from entering the vacuum chamber 6.

[0033] Vacuum chamber 6 is connected to suction pipe 7 via pipe connector 601. Suction pipe 7 is made of corrosion-resistant alloy material, has high strength, and can withstand strong internal and external pressure differences. Pipe connector 601 is located at the top of vacuum chamber 6. A filter cover 602 located below pipe connector 601 is also fixedly connected to the inner top of vacuum chamber 6. The filter cover 602 has finer filter holes to further prevent finer particles from entering suction pipe 7. Vacuum chamber 6 is usually also equipped with a pressure sensor to monitor the vacuum status in toilet bowl 4. Suction pipe 7 is equipped with electric ball valve 8, which has two states: normally closed and normally open.

[0034] The other end of the extraction pipe 7 is connected to a vacuum pump 9, which mechanically extracts the air from the toilet bowl 4. The vacuum pump 9 has an air inlet 901 and an exhaust grille 902. The extraction pipe 7 is fixedly connected to the air inlet 901 away from the vacuum chamber 6, forming a complete extraction channel. The vacuum pump 9 is equipped with a deodorizing filter in the exhaust grille 902. The deodorizing filter includes, but is not limited to, activated carbon. It can not only adsorb odor molecules in the air extracted from the toilet bowl 4, but also has low operating costs and is easy to replace.

[0035] Working principle: Before use, the connecting flange 102 needs to be fixedly connected to the discharge end of the toilet or squat toilet. In the initial state, the electrically controlled on / off valve 2 is normally closed, the electric ball valve 8 is normally open, and the vacuum pump 9 starts to remove the air from the toilet bowl 4 until the air pressure data detected by the air pressure sensor in the vacuum chamber 6 reaches the set range. At the same time, the electric ball valve 8 switches to the normally closed state, and the vacuum pump 9 stops. After the user finishes using the toilet, pressing the flush button on the toilet or squat toilet will not result in water entering the toilet or squat toilet. Instead, the electrically controlled on / off valve 2 is energized and enters a high-frequency on / off switching state. Under the action of intermittent pressure difference, outside air will intermittently and rapidly rush into the toilet or squat toilet, pushing the feces and sewage in the toilet or squat toilet into the drainage pipe 1 and finally into the toilet bowl 4 through the extension pipe 302. The power-on time should not be too long. It is necessary to ensure that there is a sufficient pressure difference between the inside and outside of the toilet bowl 4 to maintain the continuous high-speed airflow. After the power-on valve 2 is de-energized and in the normally closed state, there is still a relatively large pressure difference between the inside and outside of the toilet bowl 4. However, the air pressure value detected by the air pressure sensor in the vacuum chamber 6 rises significantly. Only after the power-on valve 2 is in the normally closed state will the electric ball valve 8 switch to the normally open state. At the same time, the vacuum pump 9 starts to extract the excess air in the toilet bowl 4 again. After being filtered by the deodorizing filter in the exhaust grille 902, the air is discharged into the atmosphere. When the air pressure value detected by the air pressure sensor drops to the set value range, the electric ball valve 8 switches to the normally closed state again, and the vacuum pump 9 stops. After one collection of feces, the water supply mechanism in the squat toilet or sit-down toilet will inject a small amount of water into the U-shaped part 101 to reduce the backflow odor in the drainage pipe 1.

[0036] The basic principles, main features, and advantages of this application have been described above. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this application. Various changes and modifications can be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection claimed by this application is defined by the appended claims and their equivalents.

Claims

1. A high-frequency vacuum toilet, characterized in that: The toilet includes an upward-facing toilet bowl (4), with a cover (3) fixedly connected to the upper end of the toilet bowl (4). A sealing ring (10) is provided between the cover (3) and the toilet bowl (4). The cover (3) is connected to a drainage pipe (1) through a suction end (301). The drainage pipe (1) is equipped with an electrically controlled on / off valve (2). The cover (3) has a configuration window (303) that runs through the upper and lower surfaces. A baffle (5) is provided inside the configuration window (303). The cover (3) covers the configuration window (303) with a vacuum chamber (6). The vacuum chamber (6) is connected to an air extraction pipe (7) through a pipe connection end (601). The air extraction pipe (7) is equipped with an electric ball valve (8). The other end of the air extraction pipe (7) is connected to a vacuum pump (9).

2. The high-frequency vacuum toilet as described in claim 1, characterized in that: The pipe end (601) is located at the top of the vacuum chamber (6), and a filter cover (602) located at the lower end of the pipe end (601) is fixedly connected to the inner top of the vacuum chamber (6).

3. The high-frequency vacuum toilet as described in claim 2, characterized in that: The vacuum pump (9) has an air inlet (901) and an exhaust grille (902), and the suction pipe (7) is fixedly connected to the air inlet (901) away from the vacuum chamber (6).

4. The high-frequency vacuum toilet as described in claim 3, characterized in that: The vacuum pump (9) is equipped with a deodorizing filter element inside the exhaust grille (902).

5. The high-frequency vacuum toilet as described in claim 1, characterized in that: The toilet bowl (4) has an outwardly extending support frame (401) at its upper end. The upper surface of the support frame (401) is provided with a lower groove (402), and the sealing ring (10) is installed in the lower groove (402).

6. The high-frequency vacuum toilet as described in claim 5, characterized in that: The cover (3) is pressed against the upper surface of the support frame (401) and is adapted to be fixedly connected to the support frame (401) by bolts.

7. The high-frequency vacuum toilet as described in any one of claims 1 to 6, characterized in that: The main body of the drainage tube (1) is a U-shaped part (101), which has two upper ends. One upper end extends upward and is fixedly connected to a connecting flange (102), while the other upper end bends downward and is connected to the suction end (301).

8. The high-frequency vacuum toilet as described in claim 7, characterized in that: The lower surface of the cap (3) is fixedly connected to an extension tube (302) located at the lower end of the suction end (301), and the electrically controlled on / off valve (2) is located at the downward-bent end of the U-shaped part (101).

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