CN212880648U

CN212880648U - Low expiration resistance type self-rescuer

Info

Publication number: CN212880648U
Application number: CN202021242863.7U
Authority: CN
Inventors: 朱玉苓; 巩中凯; 徐海兵
Original assignee: Shandong Saifute Mining Equipment Technology Co ltd
Current assignee: Shandong Saifute Mining Equipment Technology Co ltd
Priority date: 2020-06-30
Filing date: 2020-06-30
Publication date: 2021-04-06
Anticipated expiration: 2030-06-30

Abstract

The utility model belongs to the safety device field, concretely relates to low expiration resistance type self-rescuer, which comprises a lower shell, the oxygen cylinder, air-vent valve and purifying tank, the inside upper end of purifying tank is fixed with the filter screen, the top of purifying tank is fixed with the cover, the outside sealing connection of cover has the gasbag, be fixed with the expiration hard tube that inserts purifying tank inboard bottom on the cover, the upper end of expiration hard tube is connected with the expiration hose, wherein, the bottom of cover is fixed with the sealed cowling, still be fixed with the venturi that is located the sealed cowling on the cover, connecting hose and air-vent valve fixed connection are passed through to venturi's upper end, be equipped with the blow vent of being connected with venturi's negative pressure mouth correspondence on the sealed cowling, the negative pressure mouth all is located the top of filter screen with the blow vent, be equipped with a. The utility model discloses increased venturi between air-vent valve and gasbag, greatly reduced the person's of wearing expiration resistance, it is more laborsaving to make the expiration, and it is better to wear the comfort level.

Description

Low expiration resistance type self-rescuer

Technical Field

The utility model relates to a low resistance type self-rescuer that exhales belongs to the safety device field.

Background

The oxygen self-rescuer is a portable breathing protective device which utilizes oxygen to supply oxygen for a gas source so as to prevent toxic gas poisoning or oxygen deficiency asphyxia, can rapidly provide clean oxygen for a wearer when gas or coal dust accidents and fire accidents occur, and is completely isolated from the outside ambient air in use without being harmed by any outside toxic and harmful gas and smoke, so that the oxygen self-rescuer is suitable for various toxic and harmful gas and oxygen deficiency environments to rapidly evacuate accident sites.

However, the existing self-rescuer has some defects that the pressure regulating valve is directly connected with the air bag, and oxygen flowing out of the oxygen cylinder directly enters the air bag through the pressure regulating valve for the wearer to inhale. However, the gas of wearer's exhalation can get into the purifying tank through breathing hose, breathing hard tube, and gas after the purification can supply the wearer to breathe in through filter screen and cover reentrant entering gasbag from the mode of overflowing, because it is slower from overflow speed to lead to purifying tank internal pressure great, consequently cause the expiration resistance great, the wearer exhales hard, and the wearing comfort level is relatively poor.

SUMMERY OF THE UTILITY MODEL

According to the not enough among the above prior art, the utility model discloses the technical problem who solves is: provides a low expiration resistance type self-rescuer with better wearing comfort.

Low expiration resistance type self-rescuer, including lower casing, the oxygen cylinder, air-vent valve and purifying tank, the inside upper end of purifying tank is fixed with the filter screen, the top of purifying tank is fixed with the cover, the outside sealing connection of cover has the gasbag, be fixed with the expiration hard tube that inserts purifying tank inboard bottom on the cover, the upper end of expiration hard tube is connected with the expiration hose, wherein, the bottom of cover is fixed with the sealed cowling, still be fixed with the venturi that is located the sealed cowling on the cover, venturi's upper end is through connecting hose and air-vent valve fixed connection, be equipped with the blow vent that corresponds the connection with venturi's negative pressure mouth on the sealed cowling, negative pressure mouth and blow vent all are located the top of filter screen, be equipped with a plurality of sealed cowlings and the through-hole that.

Foretell lower casing's front side is equipped with the absorbent observation window corresponding with the purifying tank, because this product is safety protection equipment, needs regularly to dismantle to whether the inspection carbon dioxide absorbent became invalid, very troublesome sets up the absorbent observation window, can judge whether the carbon dioxide absorbent became invalid according to the colour of the carbon dioxide absorbent of observing, need not to dismantle, and is very convenient.

The foretell front side of casing down is equipped with two corresponding slots, and it has the data plate to peg graft in two slots, carries out fixed connection through a screw between data plate and the casing down, and traditionally, the data plate needs four screws to fix four angles respectively under on the casing, and is very troublesome, through setting up the slot, only needs a screw can fix the data plate, and is very convenient.

Compared with the prior art, the utility model beneficial effect who has is:

low resistance type self-rescuer exhales has increased venturi between air-vent valve and gasbag, greatly reduced the person's of wearing expiratory resistance, make the expiration more laborsaving, wear the comfort level better.

Drawings

Fig. 1 is a front view of the present invention;

fig. 2 is a cross-sectional view of the present invention;

FIG. 3 is an enlarged view taken at a in FIG. 2;

fig. 4 is a partial structural sectional view when the present invention is worn.

In the figure: 1. an absorbent viewing window; 2. a slot; 3. a nameplate; 4. a screw; 5. a lower housing; 6. a purification tank; 7. an expiratory hard tube; 8. a connecting hose; 9. a pressure regulating valve; 10. an oxygen cylinder; 11. filtering with a screen; 12. a can lid; 13. a through hole; 14. a venturi tube; 15. a negative pressure port; 16. a vent; 17. a sealing cover; 18. an air bag; 19. an exhalation hose.

Detailed Description

Embodiments of the present invention are further described below with reference to the accompanying drawings:

as shown in figures 1 to 4, the low expiratory resistance type self-rescuer of the utility model comprises a lower shell 5, an oxygen cylinder 10, a pressure regulating valve 9 and a purifying tank 6, wherein the upper end inside the purifying tank 6 is fixed with a filter screen 11, the top of the purifying tank 6 is fixed with a tank cover 12, the outer side of the tank cover 12 is hermetically connected with an air bag 18, the tank cover 12 is fixed with an expiratory hard tube 7 inserted into the bottom inside the purifying tank 6, the upper end of the expiratory hard tube 7 is connected with an expiratory hose 19, wherein, the bottom of cover 12 is fixed with sealed cowling 17, still is fixed with the venturi 14 that is located sealed cowling 17 on cover 12, and connecting hose 8 and air-vent valve 9 fixed connection are passed through to venturi 14's upper end, are equipped with the blow vent 16 that corresponds the connection with venturi 14's negative pressure mouth 15 on the sealed cowling 17, and negative pressure mouth 15 and blow vent 16 all are located the top of filter screen 11, are equipped with a plurality of through-holes 13 that link sealed cowling 17 and air vent bag 18 on the cover 12.

In a preferred embodiment: the absorbent observation window 1 corresponding to the purification tank 6 is arranged on the front side of the lower shell 5, and the absorbent observation window 1 is arranged, so that the product is a safety protection device and needs to be periodically disassembled to check whether the carbon dioxide absorbent is invalid or not, and is very troublesome; foretell lower casing 5's front side is equipped with two corresponding slots 2, and it has data plate 3 to peg graft in two slots 2, carries out fixed connection through a screw 4 between data plate 3 and the lower casing 5, and traditionally, data plate 3 needs four screws 4 to fix four angles respectively on lower casing 2, and is very troublesome, through setting up slot 2, only needs a screw 4 can fix data plate 3, and is very convenient.

When the air purifier is worn and used, the oxygen cylinder 10 can generate jet air flow when releasing oxygen, the jetted oxygen enters the air bag 18 through the pressure regulating valve 9, the connecting hose 20, the Venturi tube 14, the sealing cover 17 and the through hole 13 to be inhaled by a wearer, the jet flow effect of the Venturi tube 14 can further strengthen the oxygen flow, the negative pressure port 15 of the Venturi tube 14 can generate negative pressure, so that purified gas can rapidly enter the Venturi tube 14 through the filter screen 11, the vent hole 16 and the negative pressure port 15, and is jetted into the air bag 18 along with the oxygen flow, the air pressure in the purifying tank 6 is reduced, the exhalation resistance of the wearer is greatly reduced, the exhalation is more labor-saving, and the wearing comfort is better.

Low expiration resistance type self-rescuer, increased venturi 14 between air-vent valve 9 and gasbag 18, greatly reduced the expiration resistance of wearing person, make the expiration more laborsaving, wear the comfort level better.

Claims

1. The utility model provides a low expiration resistance type self-rescuer, including casing (5) down, oxygen cylinder (10), air-vent valve (9) and purifying tank (6), the inside upper end of purifying tank (6) is fixed with filter screen (11), the top of purifying tank (6) is fixed with cover (12), the outside sealing connection of cover (12) has gasbag (18), be fixed with expiration hard tube (7) that insert purifying tank (6) inboard bottom on cover (12), the upper end of expiration hard tube (7) is connected with expiration hose (19), its characterized in that: the bottom of cover (12) is fixed with sealed cowling (17), still be fixed with venturi (14) that are located sealed cowling (17) on cover (12), connecting hose (8) and air-vent valve (9) fixed connection are passed through to the upper end of venturi (14), be equipped with on sealed cowling (17) and correspond vent hole (16) of being connected with negative pressure mouth (15) of venturi (14), negative pressure mouth (15) all are located the top of filter screen (11) with vent hole (16), be equipped with a plurality of through-holes (13) of sealed cowling (17) and vent bag (18) even on cover (12).

2. The low exhalation resistance type self-rescuer according to claim 1, characterized in that: and an absorbent observation window (1) corresponding to the purification tank (6) is arranged on the front side of the lower shell (5).

3. A low resistance-to-expiration self-rescuer according to claim 1 or 2, wherein: the front side of lower casing (5) be equipped with two corresponding slots (2), it has data plate (3) to peg graft in two slots (2), carries out fixed connection through a screw (4) between data plate (3) and lower casing (5).