Respiratory care device for decontaminating inhaled air

Abstract

The application discloses a respiratory nursing device for sterilizing inhaled air, and particularly relates to the technical field of nursing. The application provides a respiratory nursing device which can sufficiently sterilize air and avoid inhaling unsterilized air. The respiratory nursing device for sterilizing inhaled air comprises a shell, a breathing mask fixed to the shell, an irradiation lamp fixed to the shell, an air pump fixed to the shell, and a refining rod rotationally connected to the shell. After the breathing mask is worn by a patient, the irradiation lamp is started, and the air pump is started. The air pump drives the blade to rotate the refining rod, and air flows out from the air pipes distributed circumferentially on the refining rod and is uniformly sprayed on the irradiation lamp, so that the air sufficiently contacts the irradiation lamp and bacteria contained in the air are sufficiently killed, thereby preventing unsterilized air from flowing out of the breathing mask, ensuring that the air flowing out of the breathing mask is sterile, and preventing the patient from inhaling uncompletely sterilized air and being harmed.

Description

Technical Field

[0001] This invention relates to the field of nursing technology, and in particular to a respiratory care device for sterilizing inhaled air. Background Technology

[0002] Sterilization respiratory care devices can sterilize the air before supplying it to people who need sterile air, preventing bacteria in the air from harming them. Therefore, it is necessary to sterilize the air.

[0003] Currently, air sterilization utilizes irradiation lamps. However, during irradiation, the rapid inhalation of air results in a short irradiation time, leaving bacteria in the air incompletely eliminated. Furthermore, during the use of a breathing mask, insufficient air supply can occur due to the patient's rapid inhalation, allowing air to seep in through the gap between the face and the mask, causing the patient to inhale unsterilized air and affecting their health.

[0004] Therefore, we need to research a respiratory care device that can fully sterilize the air, ensuring that people inhale sterilized air and avoiding the inhalation of unsterilized air. Summary of the Invention

[0005] In order to overcome the shortcomings of existing sterilization and nursing equipment that do not completely sterilize, the present invention provides a respiratory nursing device that can fully sterilize the air and prevent people from inhaling unsterilized air.

[0006] A respiratory care device for sterilizing inhaled air includes a housing, a breathing mask fixedly attached to the housing, an irradiation lamp fixedly attached to the housing, an air pump fixedly attached to the housing, a thinning rod rotatably connected to the housing, and circumferentially distributed blades fixedly attached to the thinning rod.

[0007] In one embodiment, the device further includes circumferentially distributed tracheae, which are fixed to the thinning rod.

[0008] In one embodiment, the storage box is further included, the storage box being fixedly connected to the outer shell, the storage box being slidably connected to a lifting plate, the storage box being slidably connected to a sliding rod, the sliding rod being fixedly connected to the lifting plate, and a spring being fixedly connected between the sliding rod and the storage box.

[0009] In one embodiment, the system further includes a cylinder fixed to the outer casing. A pressure plate is fixed to the telescopic end of the cylinder. A compression cylinder is fixed to the top of the outer casing. The pressure plate is slidably connected to the compression cylinder. A first one-way valve is fixed to the compression cylinder. A sterile water tank is fixed to the outer casing. A second one-way valve is fixed to the sterile water tank. A second one-way valve is fixed to the compression cylinder. A fixing mesh is fixed to the outer casing. Filter cotton is fixed to the fixing mesh.

[0010] In one embodiment, the filter cotton is a self-rebound material, and the fixing mesh has evenly distributed grooves.

[0011] In one embodiment, a pressure rod is further included, which is fixed to the pressure plate. The housing is fixed to an elastic telescopic component, which is fixed to an extrusion mesh, and the extrusion mesh is fixed to a wedge plate.

[0012] In one embodiment, the extruded mesh has evenly distributed grooves, and the extruded mesh is slidably connected to the outer shell.

[0013] In one embodiment, an ion adsorber is further included, which is fixed to the housing, and the ion adsorber is connected to a scraper rod, and the refining rod is fixed to a fixing rod.

[0014] In one embodiment, the scraper is made of a dust-collecting material and is in contact with the fixing rod.

[0015] In one embodiment, the system further includes a wastewater tank fixedly connected to the outer casing, a wastewater pipe fixedly connected between the wastewater tank and the outer casing, and a plug fixedly connected to the wastewater tank.

[0016] The beneficial effects of this invention are:

[0017] 1. This invention achieves the effect of preventing people from inhaling unsterilized air. After the patient wears the breathing mask, the irradiation lamp is turned on. The gas is evenly sprayed onto the irradiation lamp by the air pump and the fine rod to achieve the best irradiation disinfection effect. At the same time, as the internal gas gradually increases and the patient breathes alternately, the excess gas will push the lifting plate and the sliding rod to move upward, storing the gas in the storage box for use when the patient inhales. It also keeps the breathing mask in a positive pressure state at all times, effectively preventing the patient from being forced to inhale unsterilized air from the side of the breathing mask due to insufficient air supply, and preventing the patient from inhaling bacteria and causing harm.

[0018] 2. This invention controls the cylinder to shorten, causing the pressure plate to move downwards. The pressure plate squeezes the water in the compression cylinder onto the filter cotton, adding water to the filter cotton to achieve a better adsorption effect. Through the adsorption properties of water, not only can dust particles be adsorbed, but also harmful substances in the air such as formaldehyde that are easily soluble in water can be adsorbed, preventing these harmful substances from causing harm to people and ensuring the safety of patients.

[0019] 3. This invention uses a pressure bar and a wedge plate to squeeze the filter cotton to the left, squeezing out the water inside the filter cotton. This ensures that the filter cotton always maintains an appropriate moisture content, preventing excessive moisture from reducing the airflow velocity and affecting the pump efficiency. Furthermore, by squeezing out the water, dust particles and harmful substances such as formaldehyde can be removed from the filter cotton, reducing the content of harmful substances and increasing the filtration efficiency and service life of the filter cotton.

[0020] 4. This invention uses an ion adsorber to adsorb incompletely filtered particulate matter in the air, and by rotating the fixed rod, the scraper with a dust-collecting function removes the adsorbed particulate matter from the ion adsorber, ensuring that the ion adsorber always maintains the best adsorption effect, preventing particulate matter from being delivered to people through the breathing mask, preventing particulate matter from causing damage to people's respiratory tract, and improving the purity of the air.

[0021] 5. This invention collects the sewage squeezed out of the filter cotton through a sewage tank and sewage pipe, making the entire device movable and eliminating the need for a long drain pipe, which would otherwise cause inconvenience in the device's use. It facilitates the collection and discharge of sewage and prevents sewage from flowing erratically, thus enhancing the ease of use of the device. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0023] Figure 2 This is a cross-sectional view of the three-dimensional structure of the present invention.

[0024] Figure 3 This is a partial three-dimensional structural schematic diagram of the present invention.

[0025] Figure 4 This is a three-dimensional structural diagram of the air pump box and other components of the present invention.

[0026] Figure 5 This is a three-dimensional structural diagram of the irradiation lamp and blades of the present invention.

[0027] Figure 6 This is a three-dimensional structural diagram of the storage box lifting plate and other components of the present invention.

[0028] Figure 7 This is a three-dimensional structural diagram of the filter cotton and fixing mesh components of the present invention.

[0029] Figure 8 This is a three-dimensional structural diagram of the cylinder and pressure plate components of the present invention.

[0030] Figure 9 This is a three-dimensional structural diagram of the pressure bar and extrusion mesh components of the present invention.

[0031] Figure 10 This is a three-dimensional structural diagram of the scraper and fixing components of the present invention.

[0032] Figure 11 This is a three-dimensional structural diagram of the sewage tank plug and other components of the present invention.

[0033] The following are the labels in the diagram: 1. Outer shell, 101. Breathing mask, 102. Air pump, 103. Refining rod, 104. Irradiation lamp, 105. Blade, 2. Storage tank, 201. Lifting plate, 202. Slide rod, 203. Spring, 3. Cylinder, 301. Pressure plate, 302. Compression cylinder, 303. First one-way valve, 304. Sterile water tank, 305. Second one-way valve, 306. Filter cotton, 307. Fixing net, 4. Pressure rod, 401. Squeezing net, 402. Wedge plate, 403. Elastic telescopic component, 5. Ion adsorber, 501. Scraper, 502. Fixing rod, 6. Wastewater tank, 601. Wastewater pipe, 602. Plug. Detailed Implementation

[0034] The invention will now be described more fully below with reference to the accompanying drawings, in which presently preferred embodiments of the invention are illustrated. However, the invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided for thoroughness and completeness and to fully convey the scope of the invention to those skilled in the art.

[0035] Before describing the embodiments, it is necessary to explain some essential terms. For example, if terms such as "first" and "second" are used to describe various elements in this application, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. Therefore, the "first" element discussed below can also be referred to as the "second" element without departing from the teachings of the invention.

[0036] It should be understood that when referring to an element as "connected" or "linked" to another element, it may be directly connected or directly linked to the other element, or there may be an intermediate element. Conversely, when referring to an element as "directly connected" or "directly linked" to another element, there is no intermediate element. The various terms appearing in this application are for the purpose of describing particular embodiments only and are not intended to limit the invention; unless the context clearly indicates otherwise, the singular form is intended to include the plural form as well.

[0037] When the terms “comprising” and / or “including” are used in this specification, these terms indicate the presence of the said feature, integral, step, operation, element and / or component, but do not exclude the presence and / or addition of more than one other feature, integral, step, operation, element, component and / or group thereof.

[0038] Example 1: A respiratory care device for sterilizing inhaled air, such as... Figures 1-5 As shown, the device includes an outer shell 1, a breathing mask 101 fixed to the left side of the outer shell 1, an irradiation lamp 104 for air irradiation disinfection fixed inside the outer shell 1, an air pump 102 fixed inside the outer shell 1, a thinning rod 103 rotatably connected inside the outer shell 1, circumferentially distributed blades 105 fixed inside the thinning rod 103, and circumferentially distributed air tubes fixed on the thinning rod 103. Gas pushes the blades 105 inside the thinning rod 103, causing the thinning rod 103 to rotate. At the same time, air flows out from the circumferentially distributed air tubes of the thinning rod 103 and is evenly sprayed onto the irradiation lamp 104.

[0039] When people need to use sterile respiratory care devices, the traditional method is to move the breathing device next to the patient and then have the patient put on the breathing mask. However, due to the high airflow rate, the sterile device does not completely sterilize the air, and the mask is prone to leakage, causing the patient to inhale unsterilized air and causing harm. Therefore, people can use this device to sterilize the air.

[0040] First, the equipment is manually moved next to the patient, and the outer casing 1 is placed in place. Then, the breathing mask 101 is put on the patient. The breathing mask 101 is used to supply air to the patient. The irradiation lamp 104 is turned on to irradiate and disinfect the air, and the air pump 102 is turned on. The air pump 102 draws gas in through the slot on the right side of the outer casing 1 and flows out from the breathing mask 101 on the left side of the outer casing 1. The gas pushes the blades 105 inside the thinning rod 103. The blades 105 are fixed inside the thinning rod, causing the blades 105 to drive the thinning rod 103 to rotate. At the same time, air flows out from the thinning rod. Air flows out of the circumferentially distributed trachea 103 and is evenly sprayed onto the irradiation lamp 104. The irradiation lamp 104 is fixed to the inner wall of the outer shell 1, allowing the air to fully contact the irradiation lamp 104, thereby effectively eliminating bacteria contained in the air. After use, first turn off the air pump 102 to stop the air flow. The thinning rod 103 will stop rotating due to the lack of airflow. Then turn off the irradiation lamp 104 and remove the breathing mask 101 to prevent unsterilized air from flowing out of the breathing mask 101. This ensures that the air flowing out of the breathing mask 101 is sterile and prevents the patient from inhaling incompletely sterilized air and causing harm.

[0041] like Figure 6As shown, the respiratory care device for sterilizing inhaled air also includes a storage box 2, which is fixedly connected to the top of the outer shell 1. A lifting plate 201 is slidably connected inside the storage box 2, and a sliding rod 202 is slidably connected to the top of the storage box 2. The lifting plate 201 is fixedly connected to the bottom of the sliding rod 202. When a person exhales, the gas will not flow out of the breathing mask 101. The gas will push the lifting plate 201 and the sliding rod 202 to move upward simultaneously, which is used to store gas during exhalation and form positive pressure. A spring 203 is fixedly connected between the sliding rod 202 and the storage box 2.

[0042] During the operation of the air pump 102, since human breathing is a continuous cycle of inhalation and exhalation, and the air pump 102 is constantly running, when a person inhales, gas flows from the outer shell 1 to the breathing mask 101. When a person exhales, the gas does not flow out of the breathing mask 101, but instead pushes the lifting plate 201 and the sliding rod 202 upwards simultaneously, compressing the spring 203. The sterilized gas is stored in the storage box 2. When the person inhales again, the lifting plate 201 and the sliding rod 202... As the spring 203 extends and resets, the lifting plate 201 and the sliding rod 202 simultaneously move downwards and reset. The sterilized air is irradiated again and then supplied to the patient through the breathing mask 101. The lifting plate 201 and the sliding rod 202 rise and fall with the person's breathing, storing gas when the person exhales and creating positive pressure to prevent insufficient air supply from the air pump 102 due to the person inhaling too quickly, which could lead to the inhalation of unsterilized air through the gaps in the breathing mask 101 and cause injury to the patient.

[0043] Example 2: Based on Example 1, such as Figure 7As shown, the respiratory care device for sterilizing inhaled air also includes a cylinder 3, which is fixedly connected to the right side of the outer casing 1. A pressure plate 301 is fixedly connected to the telescopic end of the cylinder 3. A compression cylinder 302 is fixedly connected to the top of the outer casing 1. The pressure plate 301 is slidably connected inside the compression cylinder 302. A first one-way valve 303 is fixedly connected to the bottom of the compression cylinder 302. When the cylinder 3 shortens, it drives the pressure plate 301 to move downwards, at which point the first one-way valve 303 opens and is located at the top of the outer casing 1. When the cylinder 3 extends, it drives the pressure plate 301 to move upwards, at which point the first one-way valve 303 opens and is located at the top of the outer casing 1. Two one-way valves 305 are open. A sterile water tank 304 is fixed to the top of the outer shell 1. A second one-way valve 305 is fixed to the front side of the sterile water tank 304. The second one-way valve 305 is fixed to the rear side of the compression cylinder 302. A fixing net 307 is fixed inside the outer shell 1. A filter cotton 306 is fixed to the right side of the fixing net 307. The filter cotton 306 is made of self-rebound material. The water in the sterile water tank 304 will gradually flow into the compression cylinder 302 as the pressure plate 301 moves upward, so as to circulate water to the filter cotton 306. The fixing net 307 has evenly distributed grooves.

[0044] When the air pump 102 is working, the cylinder 3 is activated, and the cylinder 3 is controlled to shorten, causing the pressure plate 301 to move downward. The second one-way valve 305 is closed, and the first one-way valve 303 is opened, allowing the sterile water in the compression cylinder 302 to flow onto the filter cotton 306 through the first one-way valve 303, making it easier for dust to be adsorbed onto the filter cotton 306. Then, the cylinder 3 is controlled to extend, causing the pressure plate 301 to move upward. At this time, the second one-way valve 305 is opened, and the first one-way valve 303 is closed. The water in the sterile water tank 304 will gradually flow into the compression cylinder 302 as the pressure plate 301 moves upward, thus circulating and supplying water to the filter cotton 306, ensuring that the filter cotton 306 has good adsorption properties. At the same time, the moistened filter cotton 306 can humidify the air and prevent dry air from irritating the human respiratory tract.

[0045] like Figure 9As shown, the respiratory care device for sterilizing inhaled air also includes a pressure rod 4, which is fixed to the lower part of the pressure plate 301. The pressure rod 4 moves up and down simultaneously with the pressure plate 301. An elastic telescopic component 403 is fixed to the right side inside the outer shell 1. A squeezing net 401 is fixed to the elastic telescopic component 403. The squeezing net 401 is used to squeeze out excess water on the filter cotton 306, thereby cleaning the filter cotton 306. A wedge plate 402 is fixed to the right side of the squeezing net 401. The pressure rod 4 and the wedge plate 402 are squeezed together, squeezing the wedge plate 402 and the squeezing net 401 to the left simultaneously. The squeezing net 401 has evenly distributed grooves and is slidably connected to the outer shell 1.

[0046] When the pressure plate 301 moves downward, the pressure rod 4 moves downward simultaneously with the pressure plate 301. The pressure rod 4 engages with the wedge plate 402, pressing the wedge plate 402 and the extrusion mesh 401 to the left simultaneously. The elastic telescopic component 403 is stretched, and the extrusion mesh 401 moves to the left along with the filter cotton 306, compressing the filter cotton 306. Excess water in the filter cotton 306 is squeezed out by the extrusion mesh 401, and the squeezed water flows out through the groove at the bottom of the outer shell 1. The pressure rod 4 continues to move downward, disengaging from the wedge plate 402. Due to the shortening and resetting of the elastic telescopic component 403, the extrusion mesh 401 moves to the right and resets. The filter cotton 306... Simultaneously, the deformation resets, and water flows onto the filter cotton 306. As the pressure plate 301 moves upward and resets, the pressure rod 4 moves upward with the pressure plate 301. The pressure rod 4 squeezes the wedge plate 402 and the extrusion mesh 401 to the left, stretching the elastic telescopic component 403. Excess water on the filter cotton 306 is squeezed out again, achieving the effect of cleaning the filter cotton 306. The sewage inside the filter cotton 306 is squeezed out and flows out through the groove at the bottom of the outer shell 1. The pressure rod 4 continues to move upward. When the pressure rod 4 disengages from the wedge plate 402, the extrusion mesh 401 shortens and resets due to the elastic telescopic component 403. The extrusion mesh 401 moves to the right and resets simultaneously, and the filter cotton 306 resets at the same time.

[0047] like Figure 10As shown, the respiratory care device for sterilizing inhaled air also includes an ion adsorber 5, which is fixedly connected to the rear side of the inner shell 1. A scraper 501 is connected to the ion adsorber 5. The scraper 501 is used to adsorb the dust adsorbed on the ion adsorber 5, so that the ion adsorber 5 always maintains the best adsorption effect and prevents dust from flowing out of the breathing mask 101 and irritating the respiratory tract. A fixing rod 502 is fixedly connected to the thinning rod 103. The scraper 501 is made of dust-absorbing material. The scraper 501 contacts and cooperates with the fixing rod 502. The fixing rod 502 pushes the scraper 501, causing the scraper 501 to rotate on the ion adsorber 5.

[0048] During the rotation of the refining rod 103, the fixing rod 502 on the refining rod 103 pushes the scraper 501, causing the scraper 501 to rotate on the ion adsorber 5. The scraper 501, which has a dust suction function, rotates together with the refining rod 103 and the fixing rod 502. The scraper 501 will adsorb the dust adsorbed on the ion adsorber 5, so that the ion adsorber 5 always maintains the best adsorption effect and prevents dust from flowing out of the breathing mask 101 and irritating the respiratory tract.

[0049] like Figure 11 As shown, the respiratory care device for sterilizing inhaled air also includes a wastewater tank 6, which is fixed to the bottom of the outer shell 1. A wastewater pipe 601 is fixed between the wastewater tank 6 and the outer shell 1. Water squeezed out by the squeezing net 401 flows from the wastewater pipe 601 to the wastewater tank 6, and the wastewater is stored in the wastewater tank 6. A plug 602 is fixed to the front of the wastewater tank 6.

[0050] After the filter cotton 306 is squeezed out by the squeezing net 401, the squeezed water will flow from the sewage pipe 601 to the sewage tank 6, and the sewage will be stored in the sewage tank 6. When the sewage tank 6 is full, the plug 602 on the sewage tank 6 can be pulled out to discharge the sewage, which facilitates the collection and discharge of sewage and prevents sewage from flowing around and causing environmental pollution.

[0051] The remaining technical features in this embodiment can be flexibly selected by those skilled in the art to meet different specific practical needs according to actual circumstances. However, it will be obvious to those skilled in the art that these specific details are not necessary to implement the present invention. In other instances, to avoid obscuring the present invention, well-known algorithms, methods, or systems are not specifically described, and all are within the scope of technical protection defined by the claims of the present invention.

[0052] For the foregoing method embodiments, in order to simplify the description, they are all described as a series of actions. However, those skilled in the art should understand that this application is not limited to the described order of actions, because according to this application, some steps can be performed in other orders or simultaneously. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are all preferred embodiments, and the actions and units involved are not necessarily essential to this application.

[0053] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can implement the described functions using different methods for each specific application, but such implementation should not exceed the scope of this invention.

[0054] The disclosed systems, modules, and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For instance, the division of units may only be a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interface; the indirect coupling or communication connection of devices or units may be electrical, mechanical, or other forms.

[0055] The discrete components described may or may not be physically separate. Components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment, depending on actual needs.

[0056] The above description is merely a preferred embodiment of the present invention. It should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the concept described herein through the above teachings or related technologies or knowledge. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. A respiratory care device for sterilizing inhaled air, characterized in that, It includes an outer shell (1), a breathing mask (101) fixedly connected to the outer shell (1), an irradiation lamp (104) fixedly connected to the outer shell (1), an air pump (102) fixedly connected to the outer shell (1), a thinning rod (103) rotatably connected to the outer shell (1), and circumferentially distributed blades (105) fixedly connected to the thinning rod (103). It also includes circumferentially distributed trachea, which are fixed to the thinning rod (103). It also includes a storage box (2), which is fixed to the outer shell (1). The storage box (2) is slidably connected to a lifting plate (201), and the storage box (2) is slidably connected to a sliding rod (202). The sliding rod (202) is fixedly connected to the lifting plate (201), and a spring (203) is fixedly connected between the sliding rod (202) and the storage box (2). It also includes a cylinder (3), which is fixed to the outer shell (1). A pressure plate (301) is fixed to the telescopic end of the cylinder (3). A compression cylinder (302) is fixed to the top of the outer shell (1). The pressure plate (301) is slidably connected to the compression cylinder (302). A first one-way valve (303) is fixed to the compression cylinder (302). A sterile water tank (304) is fixed to the outer shell (1). A second one-way valve (305) is fixed to the sterile water tank (304). A second one-way valve (305) is fixed to the compression cylinder (302). A fixing net (307) is fixed to the outer shell (1). A filter cotton (306) is fixed to the fixing net (307). The filter cotton (306) is an automatic rebound material, and the fixing net (307) has evenly distributed grooves; It also includes a pressure rod (4), which is fixed to the pressure plate (301). The outer shell (1) is fixed to an elastic telescopic component (403), which is fixed to an extrusion mesh (401). The extrusion mesh (401) is fixed to a wedge plate (402). The extrusion mesh (401) is used to squeeze out excess water on the filter cotton (306). The pressure rod (4) and the wedge plate (402) are in a pressing fit.

2. The respiratory care device for sterilizing inhaled air as described in claim 1, characterized in that, The extruded mesh (401) has evenly distributed grooves, and the extruded mesh (401) is slidably connected to the outer shell (1).

3. The respiratory care device for sterilizing inhaled air as described in claim 2, characterized in that, It also includes an ion adsorber (5), which is fixed to the outer shell (1), and the ion adsorber (5) is connected to a scraper (501), and the refining rod (103) is fixed to a fixing rod (502).

4. The respiratory care device for sterilizing inhaled air as described in claim 3, characterized in that, The scraper (501) is made of a dust-collecting material, and the scraper (501) is in contact with the fixing rod (502).

5. The respiratory care device for sterilizing inhaled air as described in claim 4, characterized in that, It also includes a sewage tank (6), which is fixed to the outer shell (1), a sewage pipe (601) is fixed between the sewage tank (6) and the outer shell (1), and a plug (602) is fixed to the sewage tank (6).

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