CN213273079U - Positive and negative pressure sampling isolation system - Google Patents

Abstract

The utility model provides a positive negative pressure sampling isolated system relates to cofferdam technical field. The positive and negative pressure sampling isolation system comprises: the cabin body is provided with an air exchange port, a sleeve opening, a first transparent window and an opening and closing inlet and outlet, and the sleeve opening is externally connected with medical operating gloves; the sampling operation table is arranged outside the first transparent window and used for placing sampling medical supplies; the inner wall sterilization device of the cabin body is used for killing bacteria or viruses attached to the inner wall in the cabin body; the positive and negative pressure filtering device is arranged in the cabin body and comprises a first ventilation pipeline, a second ventilation pipeline, a third ventilation pipeline, an air filter and an air path conversion valve, wherein the air filter is used for extracting air and filtering air. The problem of the pollutant such as bacterium, virus spread in the air as aerosol and lead to cross infection, and the cabin is interior to be attached to the cabin inside wall and lead to cross infection because of breathing, cough and sneeze cause bacterium, virus to be solved, set up the isolation cabin into the isolation space of dual disinfection, sterilization, it is more practical.

Description

Positive and negative pressure sampling isolation system

Technical Field

The application relates to the technical field of isolation cabins, in particular to a positive and negative pressure sampling isolation system.

Background

Medical staff can perform relevant sampling and detection on regional groups at the early stage of infectious diseases, so that infected staff can be detected and further isolated and treated, and wide-range infection diffusion is avoided. When sampling specific infectious diseases, due to the protection of medical staff, the medical staff can be isolated in a specific isolation cabin, external staff is sampled through an operation table, and infected patients need to be transported to a specific hospital for treatment through the isolation cabin.

The existing medical sampling isolation cabin is often only provided with a single medical isolation function, and an air filtering device arranged in the sampling cabin is often also single in function, only has the function of filtering air in the cabin, and is not suitable for patients. If the sampling isolation cabin is used by infected patients, the pollution is easily caused to the isolation cabin, and the subsequent medical safety of the sampling isolation cabin is reduced.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a positive negative pressure sampling isolation system, main aim at provides a multi-functional, the higher positive negative pressure sampling isolation system of safety in utilization, solve pollutants such as bacterium, virus and propagate as aerosol class in the air and lead to cross infection, and the internal problem of cross infection is led to owing to breathe, cough and sneeze arouse bacterium, attached to cabin internal side wall in cabin such as virus, set the isolation space of double disinfection, sterilization with the isolation cabin, thereby be suitable for the practicality more.

In order to solve the above technical problem, an embodiment of the present invention mainly provides the following technical solutions:

an embodiment of the utility model provides a positive negative pressure sampling isolated system, include:

the cabin body is provided with an air exchange port, a cuff opening, a first transparent window and an opening and closing inlet and outlet, and the cuff opening is externally connected with medical operating gloves;

the sampling operation table is arranged outside the first transparent window and used for placing sampling medical supplies;

the sterilizing device for the inner wall of the cabin body is used for killing bacteria or viruses attached to the inner wall in the cabin body;

the positive and negative pressure filtering device is arranged in the cabin body and comprises a first ventilation pipeline, a second ventilation pipeline, a third ventilation pipeline, an air filter and an air path conversion valve, wherein the air filter is used for extracting air and filtering air.

Optionally, in the positive and negative pressure sampling and isolating system, the air path switching valve is provided with a first port, a second port, a third port and a fourth port; wherein the content of the first and second substances,

the first ventilating pipeline is connected with an air outlet of the air filter and the first interface;

the second ventilation pipeline is connected with the second interface and the air exchange port;

the third ventilation pipeline is connected with the air suction opening of the air filter and the third interface;

the fourth interface is communicated with the cabin body;

the air path switching valve is used for switching an air path communicated with the air filter, and the air path switching valve is simultaneously communicated with the first port, the fourth port, the second port and the third port; or, the first interface and the second interface, and the third interface and the fourth interface are communicated at the same time.

Optionally, in the above positive and negative pressure sampling and isolating system, the air path switching valve includes a housing, a first switching duct, a second switching duct, and a switching base, wherein,

the first interface, the second interface, the third interface and the fourth interface are sequentially arranged on the shell at intervals in an annular shape; the first switching pipeline, the second switching pipeline and the switching base are arranged in the inner cavity of the shell;

the switching base is connected with the shell through a rotating shaft, and the rotating shaft is arranged at the center of the switching base;

the first switching duct and the second switching duct are disposed on the switching base.

Optionally, in the positive and negative pressure sampling isolation system, the first switching pipeline and the second switching pipeline rotate to a first angle along with the switching base, the first switching pipeline communicates the first port and the fourth port, and the second switching pipeline communicates the second port and the third port;

the first switching pipeline and the second switching pipeline rotate to a second angle along with the switching base, the first switching pipeline is communicated with the first interface and the second interface, and the second switching pipeline is communicated with the third interface and the fourth interface.

Optionally, in above-mentioned positive negative pressure sampling isolated system, it is rotatory to first angle to switch the base, the outer air in cabin follows it gets into to trade the wind gap, passes through in proper order second ventilation pipeline, second switching pipeline, third ventilation pipeline extremely air cleaner, process air cleaner strains the back, to first ventilation pipeline and first switching pipeline, follows the fourth interface is discharged into cabin internal portion makes cabin internal portion forms the malleation space.

Optionally, in above-mentioned positive negative pressure sampling isolated system, it is rotatory to the second angle to switch the base, the internal air in cabin follows the fourth interface gets into, passes through in proper order second switching pipeline, third ventilation pipeline extremely air cleaner, process air cleaner strains the back, to first ventilation pipeline, first switching pipeline, second ventilation pipeline, follows it discharges to trade the wind gap the cabin body makes the internal negative pressure space that forms of cabin.

Optionally, in the above positive and negative pressure sampling and isolating system, the positive and negative pressure filtering device further comprises,

and the electric control device is communicated with the air path switching valve and controls the air path switching valve to be switched to the first angle or the second angle through an electric signal of the electric control device.

Optionally, in the above positive and negative pressure sampling and isolating system, the air path switching valve further comprises,

a contact switch electrically connected to the air filter, the contact switch disposed in at least one of the first switching duct and the second switching duct, wherein,

the switching base rotates to a first angle or a second angle, the contact switch is electrified, and the air filter works;

in the rotating process of the switching base, the switching base rotates to a position between a first angle and a second angle, the contact switch is powered off, and the air filter stops working.

Optionally, in the positive and negative pressure sampling isolation system, the sterilization device for the inner wall of the cabin is a photocatalyst sterilization layer disposed on the inner wall of the cabin;

or the sterilizing device for the inner wall of the cabin body is an ultraviolet lamp and is arranged on the top wall or the side wall in the cabin body.

Optionally, in the above positive and negative pressure sampling isolation system, further comprising,

the air quantity measuring device is arranged at an air suction opening of the air filter;

the pressure sensing device is arranged in the cabin body and is used for measuring the pressure condition in the cabin body;

the pressure regulating valve is arranged on the side wall of the cabin body;

the display operation device is arranged on the side wall of the cabin body and electrically connected with the air volume measuring device and the pressure sensing device, the display operation device is used for checking the pressure condition and the air volume condition in the cabin body, and the pressure regulating valve adjusts the size of a valve port of the pressure regulating valve according to the pressure value displayed by the display operation device.

Compared with the prior art, the utility model discloses technical scheme provides a positive negative pressure sampling isolated system has following advantage at least:

the embodiment of the utility model provides a pair of positive negative pressure sampling isolated system, include: the cabin body is a detachable and assembled board room with a heat insulation layer structure, and can also be an isolation tent cabin body built by a framework, the cabin body comprises but is not limited to the above form, as long as the isolation effect can be achieved, the cabin body is provided with an air exchange opening, a cuff opening, a first transparent window and an opening and closing inlet and outlet, the cuff opening is externally connected with medical operation gloves, so that medical staff can perform sampling operation without contacting with a person to be sampled, and contact infection is avoided; the first transparent window is convenient for medical staff in the cabin to observe physical sign conditions of a person to be sampled when sampling, intercom equipment or a loudspeaker can be arranged on the first transparent window, the medical staff in the cabin can communicate with the person to be sampled outside conveniently, the cabin body is provided with an opening and closing access which is mainly convenient for the person to enter and exit the cabin body, the sampling operation table is arranged outside the first transparent window and used for placing sampling medical supplies, and the medical staff can take the medical supplies for sampling and place samples and the like when sampling; the cabin inner wall sterilization device is arranged in the cabin body, pollutants such as aerosol bacteria and viruses attached to the inner wall of the cabin body along with air circulation can be killed, the isolation cabin is used for isolating and transferring patients or suspected patients, the isolation cabin is a reusable isolation cabin body, when the last person in transfer is an infected patient and the transfer person is an uninfected and uncertain patient, the inner wall of the cabin body is provided with the cabin inner wall sterilization device, so that the person in independent transfer can be prevented from being infected, and the safety of the person in the cabin is further ensured; the positive and negative pressure filtering device is arranged in the cabin body and comprises a first ventilating pipeline, a second ventilating pipeline, a third ventilating pipeline, an air filter and an air path conversion valve, wherein the air filter is used for pumping air and filtering air, the positive pressure mode and the negative pressure mode of the positive and negative pressure filtering device are switched by the air path conversion valve, when the positive and negative pressure filtering device is switched to be in the positive pressure mode, the positive and negative pressure filtering device pumps the air outside the cabin body and filters the air, and then the air is discharged into the cabin body, so that the space in the cabin body forms a positive pressure space, at the moment, the isolation cabin is mainly used for sampling of medical staff, the medical staff samples external staff in the positive pressure space of the cabin body through a sampling operation table, and the positive pressure environment in the cabin body can effectively prevent pollutants such as bacteria, viruses and the like from being; when the positive-negative pressure filtering device is switched to a negative pressure mode, the positive-negative pressure filtering device sucks air in the cabin body and filters the air, the air is discharged out of the cabin body, a negative pressure space is formed in the space in the cabin body, and the isolation cabin is mainly used for isolating and transporting patients. Different under-deck malleation or negative pressure mode have improved the utilization ratio of isolation cabin, reduce production and installation cost, have improved the efficiency that the patient was transported in sampling and isolation, and the very big assurance of the switching of two kinds of modes is not infected personnel's safety, in addition, after the cabin body used for patient, owing to through dual sterilization, disinfection, also is safer when consequently medical staff uses once more.

The above description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the embodiments of the present invention clearer and can be implemented according to the content of the description, the following detailed description is made with reference to the preferred embodiments of the present invention and accompanying drawings.

Drawings

The above and other objects, features and advantages of exemplary embodiments of the present application will become readily apparent from the following detailed description read in conjunction with the accompanying drawings. Several embodiments of the present application are illustrated by way of example and not by way of limitation in the figures of the accompanying drawings and in which like reference numerals refer to similar or corresponding parts and in which:

fig. 1 is a structural diagram of a positive and negative pressure sampling isolation system according to an embodiment of the present invention;

fig. 2 is a structural diagram of a positive-negative pressure filtering device provided by an embodiment of the present invention;

fig. 3 is a first view structural diagram of a positive/negative pressure filter device according to an embodiment of the present invention;

fig. 4 is an exploded view of the air path switching valve according to the embodiment of the present invention;

fig. 5 is a positive pressure mode space-time air flow diagram of a positive and negative pressure filter device according to an embodiment of the present invention;

fig. 6 is a negative pressure mode space-time air flow diagram of a positive and negative pressure filtering device according to an embodiment of the present invention;

the reference numerals in fig. 1 to 6 include:

10-cabin body, 11-ventilation opening, 12-cuff opening, 13-first transparent window, 14-inlet and outlet, 15-medical operation glove, 20-sampling operation table, 30-positive and negative pressure filtering device, 31-first ventilation pipeline, 32-second ventilation pipeline, 33-third ventilation pipeline, 34-air filter, 35-ventilation-path switching valve, 351-first interface, 352-second interface, 353-third interface, 354-fourth interface, 355-shell, 356-first switching pipeline, 357-second switching pipeline, 358-switching base, 359-rotating shaft, 36-electric control device, 40-air volume measuring device, 50-pressure regulating valve and 60-display operation device.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which this application belongs.

Examples

Fig. 1 to fig. 6 illustrate an embodiment of a positive/negative pressure sampling isolation system according to the present invention.

Fig. 1 to fig. 6 show, the utility model provides a pair of positive negative pressure sampling isolated system, include: the medical operation glove comprises a cabin body 10, a sampling operation table 20, a cabin body inner wall sterilization device and a positive and negative pressure filtering device 30, wherein the cabin body 10 is provided with an air exchange opening 11, a sleeve opening 12, a first transparent window 13 and an opening and closing access 14, and the sleeve opening 12 is externally connected with a medical operation glove 15; the sampling operation table 20 is arranged outside the first transparent window 13 and used for placing sampling medical supplies; the cabin inner wall sterilization device is arranged in the cabin 10 and is used for killing bacteria or viruses attached to the inner wall or in the air in the cabin; the positive and negative pressure filtering device 30 is disposed in the cabin 10 and includes a first ventilation duct 31, a second ventilation duct 32, a third ventilation duct 33, an air filter 34 and an air path switching valve 35, wherein the air filter 34 is used for extracting air and filtering the air.

In a specific implementation, a positive and negative pressure sampling isolation system comprises: the device comprises a cabin body 10, a sampling operation table 20, a cabin body inner wall sterilization device and a positive and negative pressure filtering device 30, wherein the cabin body 10 is a detachable and assembled board house with a heat insulation layer structure, and can also be an isolation tent type cabin body 10 built by a framework, including but not limited to the above forms, as long as the isolation effect can be achieved; the cabin 10 is provided with an air exchange opening 11, a cuff opening 12, a first transparent window 13 and an access 14 capable of being opened and closed, the cuff opening 12 of the cabin 10 is externally connected with medical operation gloves 15 to ensure that medical staff can perform sampling operation without contacting with a person to be sampled and avoid contact infection, the first transparent window 13 is convenient for the medical staff in the cabin 10 to observe the physical sign condition of the person to be sampled when sampling, the first transparent window 13 can be provided with intercom equipment or a loudspeaker to facilitate the communication between the medical staff in the cabin and the outside person to be sampled, the access 14 capable of being opened and closed, which is arranged on the cabin 10, is mainly convenient for the access of the cabin 10, the sampling operation table 20 is arranged outside the first transparent window 13 to facilitate the medical staff to take medical supplies and samples for sampling and the like when sampling, and it is worth noting that the sampling operation table 20 is detachably mounted outside the first transparent window 13, the concrete assembling mode can be bolt assembling, and can also be fixed outside the first transparent window 13 in a plugging mode, as long as the random disassembly and assembly can be realized, the sampling operation platform 20 comprises: a plurality of puts thing box, transports bucket and medical discarded object garbage bin, and mainly used places or accomodates sampling medical supplies, makes things convenient for medical staff to take medical supplies.

Specifically, the inner side wall of the cabin 10 is provided with a cabin inner wall sterilization device, which can kill pollutants such as aerosol bacteria and viruses attached to the inner side wall of the cabin 10 along with air circulation, because the isolation cabin is used for isolating and transferring patients or suspected patients, and the isolation cabin is the reusable isolation cabin 10, when the transferred personnel are unaffiliated patients, the side wall of the cabin 10 is provided with the cabin inner wall sterilization device, which can prevent the next transferred patient from being infected because the last transferred patient is an infected person and bacteria and viruses brought out by breathing of the patient are attached to the inner side wall of the cabin.

Simultaneously, positive negative pressure filter equipment 30 arranges in the cabin body 10, including first air pipe 31, second air pipe 32, third air pipe 33, air cleaner 34 and wind path change-over valve 35, air cleaner 34 is used for bleeding and filtered air, wind path change-over valve 35 is used for switching the intercommunication air cleaner 34's wind path, the inboard malleation or the negative pressure mode of difference have improved the utilization ratio of isolation cabin, reduce production and installation cost, have improved the efficiency of sampling and isolation transportation patient, and the very big assurance of the switching of two kinds of modes is not infected personnel's safety.

As shown in fig. 4, air path switching valve 35 includes a first port 351, a second port 352, a third port 353, and a fourth port 354; wherein the first ventilation duct 31 connects the exhaust outlet of the air filter 34 and the first interface 351; the second ventilation pipeline 32 is connected with the second interface 352 and the ventilation opening 11; the third ventilation pipe 33 connects the suction opening of the air filter 34 and the third interface 353; the fourth port 354 is communicated with the cabin 10; the air path switching valve 35 is configured to switch an air path communicating with the air filter 34, and the air path switching valve 35 simultaneously communicates with the first connection 351 and the fourth connection 354, and communicates with the second connection 352 and the third connection 353; alternatively, the first port 351 and the second port 352, and the third port 353 and the fourth port 354 are communicated with each other.

Specifically, air path switching valve 35 simultaneously connects first port 351 and fourth port 354, and connects second port 352 and third port 353; alternatively, the first port 351 and the second port 352, and the third port 353 and the fourth port 354 are communicated with each other. The positive pressure mode and the negative pressure mode of the positive and negative pressure filtering device 30 are switched by the air path switching valve 35, when the positive and negative pressure filtering device 30 is switched to the positive pressure mode, the positive and negative pressure filtering device 30 sucks air outside the cabin body 10, filters the air and discharges the air into the cabin body 10, so that a positive pressure space is formed in the space in the cabin body 10, at the moment, the isolation cabin is mainly used for sampling by medical staff, the medical staff samples the external staff through the sampling operation table 20 in the positive pressure space in the cabin body 10, and the positive pressure environment in the cabin can effectively prevent pollutants such as bacteria, viruses and the like from being transmitted from the air to further infect the medical staff; when the positive and negative pressure filtering device 30 is switched to the negative pressure mode, the positive and negative pressure filtering device 30 pumps the air into the cabin body 10 and filters the air, and then the air is discharged out of the cabin body 10, so that a negative pressure space is formed in the space in the cabin body 10, and the isolation cabin at the moment is mainly used for isolating and transporting patients.

In a specific implementation, as shown in fig. 4, air path switching valve 35 includes a housing 355, a first switching conduit 356, a second switching conduit 357, and a switching base 358, wherein first port 351, second port 352, third port 353, and fourth port 354 are annularly and sequentially disposed on housing 355 at intervals; the first switching conduit 356, the second switching conduit 357 and the switching base 358 are disposed in the inner cavity of the housing 355; the switching base 358 is connected to the housing 355 through a rotation shaft 359, and the rotation shaft 359 is disposed at a central position of the switching base 358; the first switching conduit 356 and the second switching conduit 357 are disposed on the switching base 358.

Specifically, air path switching valve 35 includes a housing 355, and a first switching duct 356, a second switching duct 357, and a switching base 358 disposed in an inner cavity of housing 355, where first interface 351, second interface 352, third interface 353, and fourth interface 354 may be sequentially arranged at intervals in a clockwise direction, or sequentially arranged on housing 355 at intervals in a counterclockwise direction, switching base 358 is connected to housing 355 through a rotation shaft 359, switching base 358 is rotatable around rotation shaft 359, and when switching base 358 is rotated, first switching duct 356 and second switching duct 357 arranged side by side on switching base 358 are rotated with switching base 358, so as to ensure that first switching duct 356 and second switching duct 357 can be connected to different air paths according to different air paths connected to air path switching valve 35.

As shown in fig. 2 to 4, in a specific implementation, the first switching conduit 356 and the second switching conduit 357 rotate to a first angle with the switching base 358, the first switching conduit 356 communicates with the first interface 351 and the fourth interface 354, and the second switching conduit 357 communicates with the second interface 352 and the third interface 353; the first switching conduit 356 and the second switching conduit 357 rotate with the switching base 358 to a second angle, the first switching conduit 356 communicates with the first interface 351 and the second interface 352, and the second switching conduit 357 communicates with the third interface 353 and the fourth interface 354.

Specifically, when the switch base 358 is rotated to a first angle, the first switch pipe 356 communicates with the first port 351 and the fourth port 354, and the second switch pipe 357 communicates with the second port 352 and the third port 353, which communicates with the first circulating air duct; when the switch base 358 is rotated to a second angle, the first switching pipe 356 connects the first interface 351 and the second interface 352, and the second switching pipe 357 connects the third interface 353 and the fourth interface 354, which connects the second circulating air duct. The air paths of the two air channels have different circulation directions, so that the effective switching of two positive and negative pressure modes is ensured.

As shown in fig. 5, in a specific implementation, the switching base 358 is rotated to a first angle, so that the air outside the cabin 10 enters from the ventilation opening 11, sequentially passes through the second ventilation duct 32, the second switching duct 357, the third ventilation duct 33 to the air filter 34, is filtered by the air filter 34 to the first ventilation duct 31 and the first switching duct 356, and is discharged into the cabin 10 from the fourth port 354, so that a positive pressure space is formed inside the cabin 10.

Specifically, switch base 358 and rotate to first angle, the outer air of cabin body 10, follow trade wind gap 11 and get into, pass through in proper order second ventilation pipeline 32, second switch pipeline 357, third ventilation pipeline 33 extremely air cleaner 34, process air cleaner 34 filters back to first ventilation pipeline 31 and first switch pipeline 356, follow fourth interface 354 is discharged inside cabin body 10, cabin body 10 at this moment is used as medical sampling, and cabin body 10 is inside for medical staff, and the outside air of cabin body 10 enters into and needs to be purified in the cabin body 10, and the under-deck is the positive pressure space this moment, provides safe isolated space for medical staff's sampling, avoids the under-deck personnel to be infected by outside personnel.

As shown in fig. 6, in a specific implementation, when the switching base 358 is rotated to the second angle, the air in the cabin 10 enters from the fourth interface 354, sequentially flows through the second switching conduit 357 and the third ventilation conduit 33 to the air filter 34, is filtered by the air filter 34, flows into the first ventilation conduit 31, the first switching conduit 356 and the second ventilation conduit 32, and is exhausted from the ventilation opening 11 out of the cabin 10, so that a negative pressure space is formed inside the cabin 10.

Specifically, switch base 358 and rotate to the second angle, the interior air of cabin 10, follow fourth interface 354 gets into, passes through in proper order second switch pipeline 357, third ventilation pipeline 33 extremely air cleaner 34, pass through air cleaner 34 filters the back, to first ventilation pipeline 31, first switch pipeline 356, second ventilation pipeline 32, follow trade wind gap 11 and discharge the cabin 10, cabin 10 at this moment is used as the isolated transportation and uses, and the inside personnel of being transported of cabin 10 are kept apart, and the inside air of cabin 10 is discharged and is needed to be purified outside cabin 10, and the cabin is the negative pressure space this moment, keeps apart the cabin personnel, can avoid the suspected bacterium or the virus that patient carried of diagnosis in the cabin to diffuse outside cabin 10, avoids the virus diffusion, has protected the personnel that are not infected.

As shown in fig. 2 to 6, in a specific implementation, the positive/negative pressure filtering device 30 further includes an electric control device 36, the electric control device 36 is communicated with the air path switching valve 35, and the electric signal of the electric control device 36 controls the air path switching valve 35 to switch to the first angle or the second angle.

Specifically, the positive/negative pressure filtering device 30 further includes an electric control device 36, the electric control device 36 communicates with the air path switching valve 35, the air path switching valve 35 is controlled by an electric signal of the electric control device 36, the air path switching valve 35 is switched to the first angle or the second angle, the electric control device 36 may be externally connected with an electric control switch, may be a mechanical switch, or may be a program switch, and controls the air path switching valve 35, so as to realize convenience of switching the air path switching valve.

In a specific implementation, as shown in fig. 2-6, air path switching valve 35 further includes a contact switch electrically connected to the air filter, the contact switch being disposed in at least one of first switching conduit 356 and second switching conduit 357, wherein when switching base 358 is rotated to a first angle or a second angle, the contact switch is energized, and air filter 34 is operated; during the rotation of the switch base 358, the switch base rotates between the first angle and the second angle, the contact switch is de-energized, and the air filter 34 stops operating.

Specifically, air path switching valve 35 further includes a contact switch disposed in at least one of first switching conduit 356 and second switching conduit 357, and when switching base 358 is rotated to a first angle or a second angle, first switching conduit 356 and second switching conduit 357 are respectively connected to corresponding interfaces, and at this time, a sealed air path channel is formed, and the contact switch is powered on, and air filter 34 is operated; during rotation of the switch base 358, the first switch conduit 356 and the second switch conduit 357 are not connected to the corresponding ports, and thus a sealed air passage cannot be formed, the contact switch is turned off, and the air filter 34 stops working. The setting of the contact switch is mainly to avoid the situation that when the first switching pipeline 356 and the second switching pipeline 357 are not correspondingly connected to form a sealed passage, the air filter 34 is opened to perform air suction operation, so that the filtering failure is caused, further, the internal and external air cross is caused, so that the bacteria and viruses cannot be purified, and the isolation failure is caused by the air cross of the internal and external cabin bodies 10.

As shown in fig. 1, in an embodiment, the sterilization device for the inner wall of the chamber 10 is a photocatalyst sterilization layer disposed on the inner wall of the chamber 10; or, the sterilization device for the inner wall of the cabin 10 is an ultraviolet lamp and is arranged on the top wall or the side wall in the cabin 10.

Specifically, the photocatalyst is also called a photocatalyst, and is a generic name of a semiconductor material having a photocatalytic function represented by nano-scale titanium dioxide. The photocatalyst sterilization layer is arranged on the surface of the base material on the inner side surface of the cabin body 10, and generates a strong catalytic degradation function under the action of ultraviolet light and visible light, so that toxic and harmful gases in the air can be effectively degraded, various bacteria can be effectively killed, and toxins released by the bacteria or fungi can be decomposed and harmlessly treated; ultraviolet lamp utilizes the bactericidal effect of ultraviolet ray to carry out the disinfection of disinfecting, and the use of ultraviolet lamp is operated as far as possible after transporting, if the under-deck has the transportation personnel, when having the necessary ultraviolet sterilization that needs to open, need make the protection to the personnel, avoids skin direct irradiation ultraviolet ray, and two kinds of under-deck sterilization, disinfection measures can superpose the use, also can the two selects one, the effectual infection of avoiding under-deck personnel.

As shown in fig. 1 to 6, in an implementation, the positive/negative pressure sampling isolation system further includes a UPS power supply, and the UPS power supply uninterruptedly supplies power to the positive/negative pressure filtering apparatus 30.

Specifically, the positive and negative pressure sampling isolation system further comprises a UPS power supply, wherein the UPS power supply uninterruptedly supplies power to the positive and negative pressure filtering devices 30 in the cabin 10, wherein a power socket can be arranged in the cabin 10, and an external power socket can be arranged outside the cabin 10, so that power supply of electrical appliances in the cabin 10 is facilitated; however, when the cabin 10 is used as an isolated transportation cabin, the cabin 10 is transported from one location to an isolated treatment point, and the entire transportation and transportation process may not be connected to an external power source at all times, and at this time, the UPS power source may supply power to the positive/negative pressure filtering device 30 and other electrical appliances inside the cabin 10, wherein, the power supply can also be a solar power supply, the solar panel laid outside the cabin 10 absorbs sunlight to generate electric energy and stores the electric energy, both power supply forms can deal with emergency situations, for example, an external power supply plug is touched by mistake and cut off the power, or the external power supply is cut off, the UPS in the cabin can be quickly started to supply power for the equipment in the cabin in an emergency way, the normal filtering work of the positive and negative pressure filtering device 30 is mainly ensured, thereby maintaining the stability of the pressure in the cabin, ensuring that bacteria, viruses and the like cannot be diffused, and further ensuring the effectiveness of isolation.

As shown in fig. 1 to fig. 6, in a specific implementation, the positive and negative pressure sampling isolation system further includes an air volume measuring device 40, a pressure sensing device, a pressure regulating valve 50 and a display operation device 60, wherein the air volume measuring device 40 is disposed at an air suction opening of the air filter 34; the pressure sensing device is arranged in the cabin 10 and is used for measuring the pressure condition in the cabin 10; the pressure regulating valve 50 is arranged on the side wall of the cabin 10; the display operation device 60 is disposed on a side wall of the cabin 10, the display operation device 60 is electrically connected to the air volume measuring device 40 and the pressure sensing device, the display operation device 60 is used for checking a pressure condition and an air volume condition inside the cabin 10, and the pressure regulating valve 50 adjusts a valve port of the pressure regulating valve 50 according to the pressure value displayed by the display operation device 60.

Specifically, the display operation device 60 is used as a central integrated operation end, which can effectively provide monitoring and corresponding device control functions for a user, the air volume measuring device 40 is arranged at the suction opening of the air filter 34, and the air volume measuring device can achieve the purpose of meeting the energy-saving working setting of the air filter 34 and simultaneously realize comfortable air circulation and pressure bearing of personnel in the cabin under the common coordination of the pressure regulating valve 50 through controlling the size of the suction opening. The pressure sensing device is provided with an acousto-optic warning prompt, and when the pressure condition in the cabin is abnormal, a user can conveniently and rapidly respond. The pressure regulating valve 50 adjusts the size of the valve port of the pressure regulating valve 50 according to the pressure value displayed by the display operation device 60, and the pressure regulating valve 50 may be electrically connected to the display operation device 60 to operate the size of the valve port of the pressure regulating valve 50 by an electric signal, or may be manually operated to adjust the size of the valve port of the pressure regulating valve 50.

Specifically, positive negative pressure sampling isolation system is still including setting up in the truckle of the cabin body 10 bottom, the truckle is provided with brake fixed establishment, on the one hand, can promote whole cabin body 10 after the assembly at specific assembly point, remove to corresponding sampling point, on the other hand, it is to have the personnel that need keep apart to be when the discovery, the cabin body 10 changes rapidly and is used as transporting patient, after the truckle, the removal of whole cabin body 10 is just more nimble, can use manpower sparingly material resources, just can promote the vehicle place of transporting the cabin to the transportation even alone, the convenient transportation. Meanwhile, the cabin 10 can be further provided with a plurality of second transparent windows arranged on the side walls of the cabin 10, and the arrangement of the second transparent windows facilitates the communication of internal and external information.

In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

It will be appreciated that the relevant features of the devices described above may be referred to one another. In addition, "first", "second", and the like in the above embodiments are for distinguishing the embodiments, and do not represent merits of the embodiments.

In the description provided herein, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known structures and techniques have not been shown in detail in order not to obscure an understanding of this description.

Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various inventive aspects. However, the disclosed apparatus should not be construed to reflect the intent as follows: rather, the invention as claimed requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this invention.

Those skilled in the art will appreciate that the components of the apparatus of the embodiments may be adapted and arranged in one or more arrangements different from the embodiments. The components of the embodiments may be combined into one component and, in addition, they may be divided into a plurality of sub-components. All of the features disclosed in this specification (including any accompanying claims, abstract and drawings), and all of the components of any apparatus so disclosed, may be combined in any combination, except combinations where at least some of such features are mutually exclusive. Each feature disclosed in this specification (including any accompanying claims, abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise.

Furthermore, those skilled in the art will appreciate that while some embodiments described herein include some features included in other embodiments, rather than other features, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. For example, in the following claims, any of the claimed embodiments may be used in any combination. The various component embodiments of the present invention may be implemented in hardware, or in a combination thereof.

It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or components not listed in a claim. The word "a" or "an" preceding a component or element does not exclude the presence of a plurality of such components or elements. The present invention can be implemented with the aid of a device comprising a number of different components. In the claims enumerating several means, several of these means may be embodied by one and the same item. The usage of the words first, second and third, etcetera do not indicate any ordering. These words may be interpreted as names.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (10)

1. A positive and negative pressure sampling isolation system, comprising:

the cabin body is provided with an air exchange port, a cuff opening, a first transparent window and an opening and closing inlet and outlet, and the cuff opening is externally connected with medical operating gloves;

the sampling operation table is arranged outside the first transparent window and used for placing sampling medical supplies;

the sterilizing device for the inner wall of the cabin body is used for killing bacteria or viruses attached to the inner wall in the cabin body;

the positive and negative pressure filtering device is arranged in the cabin body and comprises a first ventilation pipeline, a second ventilation pipeline, a third ventilation pipeline, an air filter and an air path conversion valve, wherein the air filter is used for extracting air and filtering air.

2. The positive and negative pressure sampling isolation system of claim 1,

the air path conversion valve is provided with a first connector, a second connector, a third connector and a fourth connector; wherein the content of the first and second substances,

the first ventilating pipeline is connected with an air outlet of the air filter and the first interface;

the second ventilation pipeline is connected with the second interface and the air exchange port;

the third ventilation pipeline is connected with the air suction opening of the air filter and the third interface;

the fourth interface is communicated with the cabin body;

the air path switching valve is used for switching an air path communicated with the air filter, and the air path switching valve is simultaneously communicated with the first port, the fourth port, the second port and the third port; or, the first interface and the second interface, and the third interface and the fourth interface are communicated at the same time.

3. The positive and negative pressure sampling isolation system of claim 2,

the air path conversion valve comprises a shell, a first switching pipeline, a second switching pipeline and a switching base, wherein,

the first interface, the second interface, the third interface and the fourth interface are sequentially arranged on the shell at intervals in an annular shape;

the first switching pipeline, the second switching pipeline and the switching base are arranged in the inner cavity of the shell;

the switching base is connected with the shell through a rotating shaft, and the rotating shaft is arranged at the center of the switching base;

the first switching duct and the second switching duct are disposed on the switching base.

4. The positive and negative pressure sampling isolation system of claim 3,

the first switching pipeline and the second switching pipeline rotate to a first angle along with the switching base, the first switching pipeline is communicated with the first interface and the fourth interface, and the second switching pipeline is communicated with the second interface and the third interface;

the first switching pipeline and the second switching pipeline rotate to a second angle along with the switching base, the first switching pipeline is communicated with the first interface and the second interface, and the second switching pipeline is communicated with the third interface and the fourth interface.

5. The positive and negative pressure sampling isolation system of claim 4,

switch the base and rotate to first angle, the outer air in cabin follows it gets into to trade the wind mouth, passes through in proper order second ventilation pipeline, second switch pipeline, third ventilation pipeline extremely air cleaner passes through air cleaner strains the back, to first ventilation pipeline and first switching pipeline, follows the fourth interface emits into cabin internal portion makes the internal portion in cabin forms the malleation space.

6. The positive and negative pressure sampling isolation system of claim 4,

the switching base is rotated to the second angle, the internal air of cabin follows the fourth interface gets into, passes through in proper order second switching pipeline, third ventilation pipeline extremely air cleaner, process air cleaner strains the back, to first ventilation pipeline, first switching pipeline, second ventilation pipeline, follows it discharges to trade the wind gap the cabin body makes the internal negative pressure space that forms of cabin.

7. The positive and negative pressure sampling isolation system of claim 4,

the positive and negative pressure filtering device also comprises a positive and negative pressure filtering device,

and the electric control device is communicated with the air path switching valve and controls the air path switching valve to be switched to the first angle or the second angle through an electric signal of the electric control device.

8. The positive and negative pressure sampling isolation system of claim 4,

the air path conversion valve further comprises a valve body,

a contact switch electrically connected to the air filter, the contact switch disposed in at least one of the first switching duct and the second switching duct, wherein,

the switching base rotates to a first angle or a second angle, the contact switch is electrified, and the air filter works;

in the rotating process of the switching base, the switching base rotates to a position between a first angle and a second angle, the contact switch is powered off, and the air filter stops working.

9. The positive and negative pressure sampling isolation system of claim 1,

the cabin inner wall sterilization device is a photocatalyst sterilization layer arranged on the inner wall of the cabin;

or the sterilizing device for the inner wall of the cabin body is an ultraviolet lamp and is arranged on the top wall or the side wall in the cabin body.

10. The positive and negative pressure sampling isolation system of claim 1, further comprising,

the air quantity measuring device is arranged at an air suction opening of the air filter;

the pressure sensing device is arranged in the cabin body and is used for measuring the pressure condition in the cabin body;

the pressure regulating valve is arranged on the side wall of the cabin body;

the display operation device is arranged on the side wall of the cabin body and electrically connected with the air volume measuring device and the pressure sensing device, the display operation device is used for checking the pressure condition and the air volume condition in the cabin body, and the pressure regulating valve adjusts the size of a valve port of the pressure regulating valve according to the pressure value displayed by the display operation device.

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