TWM509656U - Pneumatic protective hood - Google Patents

Description

Pneumatic protective hood

The present invention relates to a pneumatic protective hood, which is a protective device placed on the head of a worker, so that the worker does not inhale the toxic gas and dust in the working environment, thereby improving the safety during work.

In the industrial, medical research, and the production of related products, there will be some traces of dust that is harmful to human health. Therefore, the staff involved must wear pneumatic protective clothing to prevent dust from entering the protective clothing to prevent dust. In particular, it is necessary to prevent workers from inhaling dust into the body.

When the staff wears the protective clothing, they must immediately fill the air into the protective clothing so that there is enough oxygen-containing air in the protective clothing for the staff to breathe. The protective garment is a full-cover type that can cover the entire body of the worker to avoid contact between the worker and the workplace. When the staff wears a full-cover protective clothing, the protective clothing is filled with gas and expands, which reduces the mobility of the staff and affects work efficiency.

When the dust in the workplace (such as a pharmaceutical factory or laboratory) is a substance that inflicts significant harm on the body, the worker will work in a half-hood protective hood to improve the mobility of the person. Workers will also wear protective clothing and gloves and shoes that are not pneumatic, to prevent dust from adhering to the human body. a conventional protective hood that is tied with a rope at the neck Fixed. The staff often needs to turn the head during work, which makes it easy to reduce the tightness of the rope and create a gap. The harmful dust in the working environment may enter the protective hood through the gap and be inhaled by the worker.

The main purpose of this creation is to provide a pneumatic protective hood that ensures that toxic air and dust from the working environment will not enter the hood to ensure worker safety.

To achieve the above objectives, the pneumatic hood provided by the present invention comprises a soft hood provided with an open end, and a soft annular plenum is fixed at the neck of the hood. The periphery of the annular plenum and the inner wall surface of the neck of the hood are bonded to each other, and the adhesive portion forms a closed annular shape. An intake pipe is disposed at an adhesion between the annular air chamber and the neck of the hood, and an air inlet at one end of the air inlet tube extends into the annular air chamber, and the filtered air can be sent into the annular air. Indoor, the expanded annular air chamber can enclose the neck of the worker, and the head cover is sleeved on the head, and the air chamber between the annular air chamber and the human neck can be made airtight.

The annular air chamber is provided with a first pressure relief device capable of feeding air in the annular air chamber into the head cover. The annular chamber can maintain an expanded state during the release of the exhaust gas.

The top end of the head cover is provided with a second pressure releasing device capable of discharging hot air in the head cover, and the first pressure releasing device can cause fresh air in the annular air chamber to be sent into the head cover.

The annular air chamber is provided with a first pressure relief port. The first pressure relief device includes a first pressure relief valve and a first air conduction seat. The first pressure relief valve includes a first sheet and a second sheet. The first sheet has a perforation that is in close contact with the first pressure relief port. The second sheet cover Covered on the first sheet, and its four ends are fixed to the four ends of the first sheet. The first air guiding seat is a flat box having an opening at the front and the rear, and at least four rods are arranged at the front end opening to prevent the front end opening from being deformed. The first air guiding seat can be inserted into the first pocket such that the first pressure relief valve is located in the first air guiding seat.

The structure of the second pressure relief device is the same as that of the first pressure relief device, and the hot air in the head cover can be discharged when instantaneous boosting occurs in the head cover.

10‧‧‧ head cover

11‧‧‧ neck

12 ‧ ‧ pocket

13‧‧‧Second pressure relief

131‧‧‧film

20‧‧‧Circular air chamber

21‧‧‧ pocket

22‧‧‧First pressure relief port

30‧‧‧Intake pipe

40‧‧‧ staff

50‧‧‧First pressure relief device

51‧‧‧First pressure relief valve

511‧‧‧ first sheet

512‧‧‧Second sheet

513‧‧‧Perforation

52‧‧‧First air bearing seat

521‧‧‧ poles

522‧‧‧ top board

523‧‧‧floor

524‧‧‧Perforation

525‧‧‧ notch

60‧‧‧Second pressure relief device

61‧‧‧Second pressure relief valve

611‧‧‧ third sheet

612‧‧‧fourth sheet

613‧‧‧Perforation

62‧‧‧Second air bearing seat

621‧‧‧ poles

622‧‧‧ top board

623‧‧‧floor

624‧‧‧Perforation

625‧‧‧ notch

70‧‧‧ Third pressure relief device

71‧‧‧ Third Pressure Relief Valve

711‧‧‧Fifth Sheet

712‧‧‧6th sheet

713‧‧‧Perforation

72‧‧‧3rd air bearing seat

721‧‧‧ poles

FIG. 1 is an external view of an embodiment of the present invention.

Figure 2 is a cross-sectional view of the embodiment of Figure 1.

Figure 3 is a partial exploded view of the first pressure relief device.

Figure 4 is an exploded view of the first pressure relief valve and the annular air chamber of the first pressure relief device.

Figure 5 is an exploded view of the first pressure relief valve.

Figure 6 shows the airtight state of the first pressure relief device.

Figure 7 shows the pressure relief state of the first pressure relief device.

Figure 8 is a partial exploded view of the second pressure relief device.

Figure 9 is an exploded view of the second pressure relief valve and the head cover of the second pressure relief device.

Figure 10 is the airtight state of the second pressure relief device.

Figure 11 is the pressure relief state of the second pressure relief device.

Figure 12 is a partial cross-sectional view of an embodiment of the present invention.

Figure 13 shows the airtight state of the third pressure relief device.

Please refer to Figure 1 and Figure 2. The pneumatic protective hood disclosed in the present invention, the package thereof The soft head cover 10 is provided with an open end, and a soft annular air chamber 20 is fixed to the neck portion 11 of the head cover 10. The periphery of the annular plenum 20 and the inner wall surface of the neck of the hood 10 are bonded to each other, and the adhesive portion forms a closed annular shape. An intake pipe 30 is disposed at an adhesion between the annular air chamber 20 and the neck portion 11 of the head cover 10. An air inlet of one end of the air inlet pipe 30 extends into the annular air chamber 20. The outer end of the intake pipe 30 is connected to an air filtering device (not shown), and the filtered clean air can be sent into the annular air chamber 20. When the annular air chamber 20 is filled with air, it can be fixed to the neck of the worker 40. When the worker 40 turns the head or performs the action of lowering and raising the head, the air inside the annular air chamber 20 will naturally flow, and the air between the annular air chamber 20 and the neck of the worker 40 is kept airtight. To prevent outside toxic dust from entering the hood 10. If the workplace is provided with an air output device (not shown) capable of outputting fresh air, the outer end of the intake pipe 30 is connected to the air output device.

Please refer to Figure 3~Figure 7. The annular plenum 20 is provided with a first pocket 21, and a first pressure relief device 50 is disposed in the first pocket 21. The air in the annular plenum 20 can be sent into the hood 10 via the first pressure relief device 50. When the air in the annular plenum 20 exceeds a predetermined pressure, excess air is discharged from the first pressure relief device 50 and enters the hood 10. Fresh air entering the hood 10 is available for the worker 40 to breathe.

The annular plenum 20 is provided with a first pressure relief port 22, and the first pressure relief port 22 is located in the first pocket 21. The first pressure relief device 50 includes a first pressure relief valve 51 and a first air bearing seat 52. The first pressure relief valve 51 includes a first sheet 511 and a second sheet 512. The first sheet 511 has a through hole 513 which is in close contact with the first pressure relief port 22. The second sheet 512 covers the first sheet 511, and its four ends are fixed to the four ends of the first sheet 511. The first air guiding seat 52 is a flat box body having an opening at the front and the rear, and the front end opening is provided with at least two rod bodies. 521 to prevent deformation of the front end opening. The first air guiding seat 52 can be inserted into the first pocket 21 such that the first pressure relief valve 51 is located in the first air guiding seat 52.

When the air in the annular air chamber 20 is to be fed into the head cover 11, the air pressure in the annular air chamber 20 is sufficient to push the second sheet 512, so that the first sheet 511 and the second sheet 512 are When the swelling phenomenon occurs, the air can be smoothly discharged from the gap between the first sheet 511 and the second sheet 512 and enter the head cover 11. The internal space of the first air guiding seat 52 is sufficient to allow the first sheet 511 and the second sheet 512 to perform the function of exhaust expansion. The purpose of the first pressure relief valve 50 is to allow air to be exhausted into the head cover 10 after the annular air chamber 20 has to be filled with a relatively high amount of air. During the process of feeding the air in the annular plenum 20 into the hood 10, the intake pipe 30 continuously feeds fresh air into the annular plenum 20 to keep the annular plenum 20 inflated. status. Therefore, the annular air chamber 20 does not collapse due to insufficient inflation, so that the annular air chamber 20 can be surely adhered to the neck of the worker 40 without leaking air. The first pressure relief valve 50 has the function of a check valve.

The first air guiding seat 52 is provided with a top plate 522 and a bottom plate 523. The rear end of the top plate 522 is provided with four perforations 524 capable of guiding the gas. The gas discharged from the first pressure relief valve 51 can flow from the four through holes 524 to the top surface 522 of the first air guiding seat 52, so as to prevent all the exhaust gas from swelling the first sheet 511 and the second sheet 512. The up state has an impact. The bottom edge of the bottom plate 523 is provided with a notch 525. The pressure relief port 22 of the annular plenum 20 is located at the recess 525.

Please refer to Figure 2 and Figure 8 to Figure 11. A second pocket 12 is disposed at a top end of the head cover 10, and a second pressure relief device 60 is disposed in the second pocket 12. When the air pressure in the head cover 10 is higher than the set value, the air inside thereof can be discharged through the second pressure relief device 60. Due to the rise of the hot air, the air discharged by the second pressure relief device 60 is mostly hot air exhaled by the human body. The rotation of the head of the staff 40 or the movement of the head, the head, etc., will generate an instant in the hood 10 The high pressure causes the hot air in the hood 10 to be discharged by the second pressure relief device 60. Then, the air pressure in the annular air chamber 20 exceeds the air pressure in the head cover 11, and fresh air is sent into the head cover 10 from the first pressure relief device 50.

The top end of the head cover 10 is provided with a second pressure relief opening 13 , and the second pressure relief opening 13 is located in the second pocket 12 . The second pressure relief device 60 includes a second pressure relief valve 61 and a second air bearing seat 62. The second pressure relief valve 61 includes a third sheet 611 and a fourth sheet 612. The third sheet 611 has a through hole 613 which is in close contact with the second pressure relief opening 13. The fourth sheet 612 covers the third sheet 611, and its four ends are fixed to the four ends of the third sheet 611. The second air guiding seat 62 is a flat box having an opening at the front and the rear, and at least two rods 621 are disposed at the front end opening to prevent the front end opening from being deformed. The second air guiding seat 62 can be inserted into the second pocket 12 such that the second pressure relief valve 61 is located in the second air guiding seat 62.

The second pressure relief opening 13 is provided with a ring of annular film 131. Normally, the film 131 can be attached to the fourth sheet 612, as shown in FIG. 10, to prevent the gas in the head cover 10 from being leaked by the small gap between the third sheet 611 and the fourth sheet 612. Out, improve the airtight effect.

When an instantaneous high pressure is generated in the head cover 10 due to the head movement of the worker 40, the fourth sheet 612 is pushed to cause a swelling phenomenon between the third sheet 611 and the fourth sheet 612, and the air can The gap between the third sheet 611 and the fourth sheet 612 is smoothly discharged. The inner space of the second air guide seat 62 is sufficient to allow the third sheet 611 and the fourth sheet 612 to perform the function of exhaust expansion. The second pressure relief valve 60 has the function of a check valve.

The second air guide seat 62 has the same structure as the first air guide seat 52, and is also provided with a top plate 622 and a bottom plate 623. The rear end of the top plate 622 is provided with four perforations 624 capable of guiding the gas. The gas discharged by the second pressure relief valve 61 can flow from the four perforations 624 to the second air conduction seat The top surface of 62 prevents all of the exhaust gases from affecting the expanded state of the third sheet 611 and the fourth sheet 612. The bottom edge of the bottom plate 623 is provided with a notch 625. The second pressure relief opening 13 of the head cover 10 is located at the recess 625.

Please refer to Figure 12 and Figure 13. One or two third pressure relief devices 70 may be provided on the side of the head cover 10 to enhance the exhaust effect of the head cover 10 and increase the air renewal speed in the head cover 10. The head cover 10 can be provided with a third pocket 15 for receiving the third pressure relief device 70. The third pocket 15 is provided with a third pressure relief opening 14.

The structure of the third pressure relief device 70 is the same as that of the second pressure relief device 60 described above. The third pressure relief device 70 includes a third pressure relief valve 71 and a third air conduction seat 72. The third pressure relief valve 71 includes a fifth sheet 711 and a sixth sheet 712. The fifth sheet 711 has a through hole 713 which is in close contact with a third pressure relief port 14. The third pressure relief port 14 is provided with a ring of annular film 141. The sixth sheet 712 covers the fifth sheet 711, and its four ends are fixed to the four ends of the fifth sheet 711. The third air guiding seat 72 is a flat box having an opening at the front and the rear, and at least two rods 721 are disposed at the front end opening to prevent the front end opening from being deformed. The third air guiding seat 72 can be inserted into the third pocket 15 such that the third pressure relief valve 71 is located in the third air guiding seat 72.

In summary, the pressure-type protective hood provided by the creation uses the annular air chamber 20 to fix the neck of the worker, so that the airtightness is good, and the airtightness is not lost due to the movement of the worker. High security. Further, the annular air chamber 20 is provided with the first pressure relief device 50, so that it is necessary to inflate the head cover 10 while the annular air chamber 20 is surely tightening the neck of the worker 40, which is safer to use.

The above description is by way of a detailed description of the present invention, and is not intended to limit the scope of the present invention. Anyone who is familiar with such a skilled person can understand, and appropriate changes and adjustments will not lose the essence of this creation, and will not deviate from the spirit and scope of this creation.

10‧‧‧ head cover

11‧‧‧ neck

12 ‧ ‧ pocket

20‧‧‧Circular air chamber

21‧‧‧ pocket

30‧‧‧Intake pipe

40‧‧‧ staff

50‧‧‧First pressure relief device

60‧‧‧Second pressure relief device

Claims (9)

The utility model relates to a pneumatic protection head cover, which comprises a soft hood provided with an open end, wherein a soft annular air chamber is fixed at a neck portion of the hood; a periphery of the annular air chamber and a neck portion of the hood The inner wall faces are bonded to each other, and the adhesive portion forms a closed annular shape; an air inlet pipe is disposed at an adhesion point between the annular air chamber and the neck of the hood, and an air inlet of one end of the air inlet pipe extends into the air inlet The annular air chamber can send the filtered air into the annular air chamber; the annular air chamber is provided with a first pressure relief device, and the air in the annular air chamber can be sent into the head cover; the head A second pressure relief device is disposed at the top end of the cover to discharge air from the head cover. The pneumatic hood according to claim 1, wherein the outer wall surface of the annular plenum is provided with a first pocket for locating the first pressure relief device; the annular plenum is provided with a first venting a first pressure relief port is disposed in the first pocket; the first pressure relief device includes a first pressure relief valve and a first air conduction seat; the first pressure relief valve includes a first sheet and a first pressure relief valve a second sheet; the first sheet has a perforation, the perforation is in close contact with the first pressure relief opening; the second sheet is covered on the first sheet, and the four ends thereof are fixed to the four ends of the first sheet; The first air guiding seat is a flat box having an opening at the front and the rear, and the front end opening is provided with at least four rods to prevent deformation of the front end opening; the first air guiding seat can be inserted into the first pocket, The first pressure relief valve is positioned within the first air bearing seat. The air-pressure protective hood of claim 1, wherein the outer wall surface of the top end of the hood is provided with a second pocket for arranging the second pressure relief device; the hood is provided with a second pressure relief port, The second pressure relief device is located in the second pocket; the second pressure relief device comprises a second pressure relief valve and a second air bearing seat; the second pressure relief valve comprises a third sheet and a fourth sheet The third sheet has a perforation that is in close contact with the second pressure relief opening; the fourth sheet covers the third sheet, and the four ends thereof are fixed to the four ends of the third sheet; the second guide The air seat is a flat box having an opening at the front and the rear, and at least four rods are arranged at the front end opening to prevent the front end opening from becoming The second air guiding seat can be inserted into the second pocket such that the second pressure relief valve is located in the second air guiding seat. The pneumatic protective head cover according to claim 3, wherein the second pressure release port is provided with a ring-shaped annular film; the film can be attached to the fourth sheet to improve airtightness. The pneumatic hood according to claim 1, wherein the outer end of the air inlet tube is connected to an air filtering device. The pneumatic hood according to claim 1, wherein the outer end of the intake pipe is connected to an air output device capable of outputting fresh air. The pneumatic hood according to claim 1, wherein one or two third pressure releasing devices are disposed on both sides of the hood, and the air in the hood can be discharged. The pneumatic hood according to claim 7, wherein a side of the hood is provided with a third pocket for arranging the third pressure relief device; the hood is provided with a third pressure relief port, the first a third pressure relief port is disposed in the third pocket; the third pressure relief device includes a third pressure relief valve and a third air bearing seat; the third pressure relief valve includes a fifth sheet and a sixth sheet; The fifth sheet has a perforation, the perforation is in close contact with the third pressure relief opening; the sixth sheet is covered on the fifth sheet, and the four ends thereof are fixed to the four ends of the fifth sheet; the third air conduction seat a flat box having an opening at the front and the rear, and a front end opening is provided with at least four rods to prevent deformation of the front end opening; the third air guiding seat can be inserted into the third pocket to make the third leak The pressure valve is located in the third air bearing seat. The pneumatic protective head cover of claim 8, wherein the second pressure release port is provided with a ring of annular film; the film can be attached to the sixth sheet to improve airtightness.