Portable light negative-pressure rigid-flexible composite isolation hood

Abstract

The utility model discloses a portable light negative pressure rigid-flexible composite isolation hood, which relates to the technical field of medical protection equipment, and comprises a hood body provided with an exhaust port and a one-way air inlet valve; the neck sealing air bag is connected to the bottom edge of the hood body in a surrounding manner; the ventilation filtering system is communicated with the exhaust port through an exhaust pipe; when the isolation hood is used, the neck sealing air bag is inflated, so that the neck sealing air bag is sealed on the neck of a user, and the ventilation filtering system sucks air in the sealing cavity, so that a negative pressure environment is formed in the hood body. When a user wears the isolation hood on the head, the ventilation filtering system is started to work, air in the hood body can be sucked, then a negative pressure environment is formed in the hood body, meanwhile, the ventilation filtering system can effectively filter and purify air in the hood body, and therefore the ventilation filtering system can effectively filter and purify the air in the hood body. Spreading of viruses and bacteria is prevented, and aerosol carrying pathogens is prevented from diffusing.

Description

Technical Field

[0001] The utility model relates to the technical field of medical protection equipment, and more specifically to a portable lightweight negative pressure rigid-flexible composite isolation head cover. Background Art

[0002] Respiratory pathogens are infectious diseases caused by the invasion of respiratory infections such as the cavity, throat, trachea and bronchi in the head. Exhaled gas and saliva droplets are potential carriers of transmission. Effectively preventing the spread of pathogens and ensuring flexibility of use have urged the production of negative pressure isolation hoods, but the comfort and impact resistance requirements of users of negative pressure isolation hoods are still a major problem.

[0003] Therefore, how to provide an isolation hood that can effectively filter and purify the internal air of the isolation hood and prevent the spread of viruses and bacteria is a problem that those skilled in the art urgently need to solve. Utility Model Content

[0004] In view of this, the utility model provides a portable lightweight negative pressure rigid-flexible composite isolation hood, which provides a fully enclosed stable micro-negative pressure space to block the spread of pathogens, effectively filters and purifies the internal air of the hood, and prevents the spread of viruses and bacteria.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] The utility model provides a portable lightweight negative pressure rigid-flexible composite isolation hood, comprising:

[0007] A hood body, wherein the hood body is provided with an exhaust port and a one-way air inlet valve;

[0008] A neck sealing airbag, connected around the bottom edge of the hood body;

[0009] A ventilation and filtering system is connected to the exhaust port through an exhaust pipe;

[0010] When the isolation hood is used, the neck sealing airbag is inflated to seal the neck of the user, and a sealed cavity is formed in the hood body. The ventilation and filtering system sucks the gas in the sealed cavity to form a negative pressure environment in the sealed cavity.

[0011] According to the portable lightweight negative pressure rigid-flexible composite isolation hood provided by the utility model, the hood body includes a hard helmet body, a transparent face mask and a shock-absorbing lining, the transparent face mask is sealed to the front side of the hard helmet body, the shock-absorbing lining is bonded to the inner wall of the hard helmet body, and the exhaust port and the one-way air inlet valve pass through the hard helmet body and the shock-absorbing lining in sequence.

[0012] The portable lightweight negative pressure rigid-flexible composite isolation hood provided by the utility model also includes a tightening strap, and the tightening strap is connected to the neck sealing airbag or the hood body.

[0013] According to the portable lightweight negative pressure rigid-flexible composite isolation head cover provided by the utility model, the transparent face cover and the hard helmet body are sealed and connected by a sealing rubber strip.

[0014] According to the portable lightweight negative pressure rigid-flexible composite isolation hood provided by the utility model, the ventilation and filtration system includes a shell, and an air filter, a power exhaust device and a circuit board arranged in sequence inside the shell, the shell has an air inlet and an air outlet, the air inlet is connected to the exhaust port through the exhaust pipe, the air filter and the power exhaust device are arranged between the air inlet and the exhaust port, and the air filter and the power exhaust device are electrically connected to the circuit board.

[0015] The portable lightweight negative pressure rigid-flexible composite isolation hood provided by the utility model also includes a waist belt, which is connected to the shell to facilitate fixing the ventilation and filtration system on the waist of the user.

[0016] The portable lightweight negative pressure rigid-flexible composite isolation hood provided by the utility model also includes an air volume adjustment button, which is connected to the circuit board and is used to control the power exhaust device.

[0017] According to the portable lightweight negative pressure rigid-flexible composite isolation hood provided by the utility model, the exhaust pipe is a corrugated pipe.

[0018] The portable lightweight negative pressure rigid-flexible composite isolation hood provided by the utility model also includes a pressure difference sensor, which is arranged on one side of the one-way air inlet valve on the hood body.

[0019] It can be seen from the above technical scheme that compared with the prior art, the utility model discloses a portable lightweight negative pressure rigid-flexible composite isolation hood. Through the arrangement of the hood body, the neck sealing airbag and the ventilation and filtration system, when the user wears the isolation hood on the head, the ventilation and filtration system is started to suck the gas in the hood body, thereby forming a negative pressure environment inside the hood body. At the same time, the ventilation and filtration system can effectively filter and purify the internal air of the hood body, prevent the spread of viruses and bacteria, and prevent the spread of aerosols carrying pathogens. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0021] Figure 1 A schematic diagram of the structure of the head cover body provided by the utility model at a viewing angle;

[0022] Figure 2 A schematic diagram of the structure of the head cover body provided by the utility model at another viewing angle;

[0023] Figure 3 A schematic diagram of the structure of the ventilation and filtration system provided by the utility model;

[0024] Figure 4 An exploded diagram of the ventilation and filtration system provided by the utility model;

[0025] Figure 5 A diagram showing the use status of the portable lightweight negative pressure rigid-flexible composite isolation hood provided by the utility model during wearing.

[0026] In the figure: 1 is a hard helmet body; 2 is a transparent mask; 3 is a neck sealing airbag; 4 is a tightening strap; 5 is an exhaust pipe; 6 is an exhaust port; 7 is a one-way air inlet valve; 8 is a manual air valve; 9 is a shell; 10 is a circuit board; 11 is a power exhaust device; 12 is an air filter; 13 is a waist belt; 14 is an air inlet; 15 is an exhaust port; 100 is a hood body; 200 is a ventilation and filtration system. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] See also Figure 1-5 The embodiment of the utility model discloses a portable lightweight negative pressure rigid-flexible composite isolation hood, comprising: a hood body 100, a neck sealing airbag 3 and a ventilation and filtering system 200.

[0029] An exhaust port 6 and a one-way air intake valve 7 are provided on the hood body 100; a one-way air intake valve 7 is provided on both sides of the lower jaw of the hood body 100 to ensure the one-way flow of ambient gas into the internal space of the hood body 100. The exhaust port 6 is provided at the rear part of the hood body 100, and the exhaust port 6 and the one-way air intake valve 7 are both connected to the interior of the hood body 100.

[0030] The neck sealing airbag 3 is connected to the bottom edge of the hood body 100; specifically, the neck sealing airbag 3 is connected to the bottom edge of the hood body 100 by a snap. An inflation tube is provided on the neck sealing airbag 3, and the inflation tube is connected to a manual air valve 8 for inflating the inside of the neck sealing airbag 3 so that the neck sealing airbag 3 surrounds the neck of the user. A memory elastic layer is provided on the inner side of the neck sealing airbag 3 and the contact surface with the human neck. After the neck sealing airbag 3 is filled with gas of a certain pressure, the memory elastic layer will fill the gap between the neck sealing airbag 3 and the human skin to prevent the gas from flowing out of the neck. The gas pressure filled in the neck sealing airbag 3 is in the appropriate range of 15kPa to 20kPa.

[0031] The ventilation and filtration system 200 is connected to the exhaust port 6 through the exhaust pipe 5; the ventilation and filtration system 200 can suck the gas inside the hood body 100, filter and purify the air sucked out from the hood body 100, and finally discharge the filtered and purified gas to the external environment.

[0032] When the isolation hood is used, the neck sealing airbag 3 is inflated to seal the neck of the user, and a sealed cavity is formed in the hood body 100. The ventilation and filtration system 200 sucks the gas in the sealed cavity to form a negative pressure environment in the sealed cavity. The filtering and purification of the air ventilation and filtration system 200 in the negative pressure environment can prevent the spread of viruses and bacteria and prevent the spread of aerosols carrying pathogens.

[0033] According to the portable lightweight negative pressure rigid-flexible composite isolation hood provided by the utility model, the hood body 100 includes a hard helmet body 1, a transparent mask 2 and a shock-absorbing lining, the transparent mask 2 is sealed and connected to the front side of the hard helmet body 1, the shock-absorbing lining is bonded to the inner wall of the hard helmet body 1, and the exhaust port 6 and the one-way air inlet valve 7 pass through the hard helmet body 1 and the shock-absorbing lining in sequence.

[0034] Among them, the hard helmet body 1 is made of POM plastic, and the shock-absorbing lining is made of memory foam. The shock-absorbing lining made of memory foam and the neck sealing airbag 3 are combined to form a lining wrapping system, which forms a rigid-flexible composite structure with the hard helmet body 1. While ensuring the impact resistance of the isolation hood when it is accidentally dropped during transportation and wearing, it also takes into account the comfort of the user when wearing it. The memory foam can absorb a certain amount of noise, so that the internal noise of the hood is less than 70 decibels. When subjected to external impact after wearing, the hard helmet body 1 supported by the external POM plastic acts as a load-bearing structure to resist the load. The lining wrapping system can stabilize the hood body 100, reduce the peak impact load on the head, and protect the head from injury. The transparent mask 2 is made of multi-curved reinforced PC material, which has good wear resistance and impact resistance. After testing, the light transmittance can reach 89.9%. The inner surface is bonded with an anti-fog film layer, which has good low-temperature anti-fog performance, ensuring the user's good vision. After the utility model optimizes the structure of the isolation hood, it conducts a physical test and the total weight is 860g, which can ensure that it will not be damaged when dropped from a height of 1m, realizing the characteristics of light weight and good impact resistance of the hood body 100. The opening size of the lower edge of the hood body 100 allows people with a head circumference of less than 60 cm to wear it, and is compatible with people who need to wear glasses.

[0035] The portable lightweight negative pressure rigid-flexible composite isolation hood provided by the utility model also includes a tightening strap 4, which is connected to the neck sealing airbag 3 or the hood body 100. Preferably, the tightening strap 4 is connected to the lower part of the neck sealing airbag 3, and the user can wear and fix the hood body 100 by bypassing it from the armpit.

[0036] According to the portable lightweight negative pressure rigid-flexible composite isolation hood provided by the utility model, the transparent mask 2 and the hard helmet body 1 are sealed and connected by a sealing strip. Specifically, the transparent mask 2 is connected to the hard helmet body 1 by bolts on both sides of the cheeks of the hard helmet body 1, and a flexible sealing strip is bonded to the connection contact surface to achieve sealing at the joint.

[0037] According to the portable lightweight negative pressure rigid-flexible composite isolation hood provided by the utility model, the ventilation and filtration system 200 includes a housing 9, and an air filter 12, a power exhaust device 11 and a circuit board 10 which are sequentially arranged inside the housing 9. The housing 9 has an air inlet 14 and an air outlet 15, and the air inlet 14 is connected to the exhaust port 6 through an air extraction pipe 5. The air filter 12 and the power exhaust device 11 are arranged between the air inlet 14 and the air outlet 15, and the air filter 12 and the power exhaust device 11 are both electrically connected to the circuit board 10. The housing 9 includes two parts connected to each other, which are used to encapsulate the air filter 12, the power exhaust device 11 and the circuit board 10 inside the housing 9, wherein the power exhaust device 11 is a fan, and the fan is driven to rotate by power supply, thereby being able to realize the suction of the air inside the hood body 100, so that a stable negative pressure environment is formed inside the hood body 100. The controller on the circuit board 10 realizes the control of the power exhaust device 11. The air filter 12 uses pleated glass fiber filter paper as the filter element, which has a large filtering area and a large dirt holding capacity. The filtering efficiency for particles with a diameter of 0.3 microns or more can reach 99.99%. When the power exhaust device 11 is started, the inside of the hood body 100 quickly reaches a stable negative pressure state under the condition of stable air volume, and the pollution-free air from the surrounding environment is sucked into the hood body 100 through the one-way air inlet valve 7 for the user to breathe. The gas is transmitted to the air filter 12 through the exhaust pipe 5, and the filtered gas is discharged into the surrounding environment through the exhaust port 15.

[0038] The portable lightweight negative pressure rigid-flexible composite isolation hood provided by the utility model also includes a waist belt 13, which is connected to the housing 9, so as to fix the ventilation and filtration system 200 on the user's waist, thereby preventing the ventilation and filtration system 200 from becoming unstable or the negative pressure exhaust pipe 5 connected to the ventilation and filtration system 200 from falling off due to severe shaking during exercise.

[0039] According to the portable lightweight negative pressure rigid-flexible composite isolation hood provided by the utility model, it also includes an air volume adjustment button, which is connected to the circuit board 10 and is used to control the power exhaust device 11. The power exhaust device 11 is controlled by the controller on the circuit board 10. Specifically, the air volume adjustment button is set with two wind speeds: the low air volume is 160L / min, and the high air volume is 200L / min. When the high air volume is high, it can ensure that the inside of the hood is in a low pressure environment of -40Pa. The air volume is adjusted by the air volume adjustment button, so as to form a stable negative pressure environment inside the hood body 100.

[0040] According to the portable lightweight negative pressure rigid-flexible composite isolation hood provided by the utility model, the exhaust pipe 5 is a bellows. Specifically, the exhaust pipe 5 is a threaded bellows, which has higher bending and axial tension and compression freedom, and higher radial compression rigidity, and can effectively prevent the cross-sectional area of ​​the hose from being reduced during movement or when being squeezed, resulting in poor air flow. The exhaust pipe 5 is connected to the hood body 100 and the ventilation and filtration system 200 by a quick plug-in method, which is simple to operate and easy to disassemble and assemble.

[0041] The portable lightweight negative pressure rigid-flexible composite isolation hood provided by the utility model also includes a pressure difference sensor, which is arranged on one side of the one-way air inlet valve 7 on the hood body 100. The setting of the pressure difference sensor can display the pressure difference between the inner and outer spaces of the hood body 100 in real time.

[0042] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0043] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A portable lightweight negative pressure rigid-flexible composite isolation hood, characterized in that: include: A hood body, wherein the hood body is provided with an exhaust port and a one-way air inlet valve; A neck sealing airbag, connected around the bottom edge of the hood body; A ventilation and filtering system is connected to the exhaust port through an exhaust pipe; When the isolation hood is used, the neck sealing airbag is inflated to seal the neck of the user, and a sealed cavity is formed in the hood body. The ventilation and filtration system sucks the gas in the sealed cavity to form a negative pressure environment in the sealed cavity. The ventilation and filtration system includes a shell, and an air filter, a power exhaust device and a circuit board arranged in sequence inside the shell, the shell has an air inlet and an air outlet, the air inlet is connected to the exhaust port through the exhaust pipe, the air filter and the power exhaust device are arranged between the air inlet and the exhaust port, and the air filter and the power exhaust device are electrically connected to the circuit board.

2. The portable lightweight negative pressure rigid-flexible composite isolation hood according to claim 1 is characterized in that: The head cover body includes a hard helmet body, a transparent face mask and a shock-absorbing lining, the transparent face mask is sealed and connected to the front side of the hard helmet body, the shock-absorbing lining is bonded to the inner wall of the hard helmet body, and the exhaust port and the one-way air inlet valve pass through the hard helmet body and the shock-absorbing lining in sequence.

3. The portable lightweight negative pressure rigid-flexible composite isolation hood according to claim 1 or 2, characterized in that: It also includes a tightening strap, which is connected to the neck sealing airbag or the head cover body.

4. The portable lightweight negative pressure rigid-flexible composite isolation hood according to claim 2 is characterized in that: The transparent face mask and the hard helmet body are sealed and connected via a sealing rubber strip.

5. The portable lightweight negative pressure rigid-flexible composite isolation hood according to claim 1 is characterized in that: The utility model also comprises a waist belt, which is connected to the shell and is convenient for fixing the ventilation and filtering system on the waist of the user.

6. The portable lightweight negative pressure rigid-flexible composite isolation hood according to claim 1 is characterized in that: It also includes an air volume adjustment button, which is connected to the circuit board and is used to control the power exhaust device.

7. The portable lightweight negative pressure rigid-flexible composite isolation hood according to claim 1 is characterized in that: The air extraction pipe is a bellows.

8. The portable lightweight negative pressure rigid-flexible composite isolation hood according to claim 1 is characterized in that: It also includes a pressure difference sensor, which is arranged on one side of the one-way air intake valve on the head cover body.

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