KR200296536Y1 - Opening and shutting valve emergency escape breathing device - Google Patents

Abstract

The present invention relates to an opening and closing valve of an emergency escape respirator, in the opening and closing valve of an emergency escape respirator, a reverse rotation prevention ring is fitted to the outside of the other end of the high-pressure valve body, the inner end and the other end of the reverse rotation prevention ring The counterpart is provided with a locking groove and a locking protrusion engaged with each other, and the anti-rotation preventing ring is coupled so as to flow only left and right in a predetermined width range, and the anti-rotation preventing ring is rotated outward to the inside of the anti-rotation ring at the other end. A spring supporting elasticity is inserted, and a one-way ratchet gear is formed at the contact end of the rotary knob and the anti-rotation ring, and a handle is fitted to the outside of the rotary knob and the anti-rotation ring, and a plurality of parts are provided on the inner part of the rotary knob and the anti-rotation knob. Locking grooves and engaging projections are formed to be engaged with each other at regular intervals so that the handle can be moved only left and right in a range of a predetermined width Are constructed in combination. The emergency valve of the emergency escape respirator is rotated by simply rotating the handle once the valve is opened, so that the handle is in contact with the surrounding objects, and thus, when the handle is applied without force, unauthorized rotation of the handle is prevented. It is prevented, and thus there is an advantage to improve the safety and reliability of the product by preventing the problem that the gas emissions are reduced or blocked without permission.

Description

OPENING AND SHUTTING VALVE EMERGENCY ESCAPE BREATHING DEVICE}

The present invention relates to an opening and closing valve of an emergency escape breathing device (Emergency escape breathing device) designed to evacuate safely in a dangerous atmosphere, in particular, by simply rotating the handle once the valve is opened to prevent rotation, It relates to an on-off valve of an emergency escape breathing apparatus to prevent the unauthorized rotation of the handle when the handle is in contact with the surrounding object to apply the rotation force.

In general, the emergency escape respirator is a device for supplying air or oxygen used for escape from an area with dangerous gas, and is mainly composed of a cylinder (emergency escape respirator main body), a high pressure, a pressure reducing valve element, and a protective hood.

In addition, the cylinder is filled with compressed air at a filling pressure of 150 kg / cm ² , and compressed air can be used as an opening / closing handle in an emergency. As soon as the opening and closing handle is opened, the compressed air enters the high pressure valve body, and flows from the center of the body in three directions: the opening and closing handle direction, the pressure gauge direction, and the safety bolt (safety bolt bolt) direction. Open air flows out and the pressure gauge indicates the current filling pressure remaining.

In addition, the compressed air entering the opening / closing handle flows back into the pressure reducer, and a certain amount of the flow rate set here is introduced into the hood through the hose.

For example, the flow rate is approximately 40 l / min and can be used for more than 10 minutes.

Such a conventional emergency escape breathing opening and closing valve is a risk that can damage the life if the valve is closed due to external influences or the air volume is reduced, unlike the intention of the evacuator during the evacuation by opening the valve after wearing the emergency escape breathing apparatus You are in a situation.

The present invention has been devised to solve the conventional problems and defects as described above, the rotation is prevented by simply rotating the handle in a state in which the valve is open once, the handle is in contact with the object around the rotational force It is an object of the present invention to provide an on-off valve of an emergency escape respirator, which is prevented from unauthorized rotation of the handle and thus prevents the problem that the gas discharge is reduced or blocked.

1 to 7 are views of the opening and closing valve of the emergency escape breathing apparatus according to the present invention,

1 is a perspective view showing the opening and closing valve of the emergency escape breathing apparatus.

2 is an exploded perspective view of the on / off valve of the emergency escape breathing apparatus;

3 is a cross-sectional view of the on-off valve of the emergency escape breathing apparatus.

4 is a longitudinal sectional view of the on-off valve of the emergency escape breathing apparatus.

Figures 5a, 5b is a partial longitudinal cross-sectional view for explaining the principle of opening and closing.

Figure 6a, 6b is a longitudinal sectional view showing the opening operation of the on-off valve.

Figure 7a, 7b is a longitudinal sectional view showing the locking operation of the on-off valve.

<Description of the symbols for the main parts of the drawings>

1: emergency escape respirator body 2: high pressure valve body

2d: switchgear 2g: other end coupling

2h: locking projection 7: opening and closing adjustment bolt

9: sleeve 10: adjusting shaft

11: rotary knob 11a, 14a: one-way ratchet gear

11b: Hanging groove 13: Handle

13b: locking projection 14: anti-rotation ring

14c: locking groove 15: spring

In order to achieve the above object, the opening and closing valve of the emergency escape respirator according to the present invention is screwed in the opening and closing chamber of the high-pressure valve body coupled to the emergency escape respirator body, the sleeve is fixed to the outside the opening and closing adjustment The control shaft for opening and closing the bolt is coupled, in the opening and closing valve of the emergency escape respirator with a rotary knob fixed to the end of the control shaft, the anti-rotation prevention ring is fitted to the outside of the other end coupling portion of the high-pressure valve body, The inner end portion of the anti-rotation ring and the corresponding portion of the other end coupling portion are provided with engaging grooves and engaging protrusions engaged with each other, so that the reverse rotation prevention ring is coupled to be movable only left and right in a predetermined width range, and the reverse portion is coupled to the opposite end portion. A spring for elastically supporting the reverse rotation prevention ring to the inside of the rotation prevention ring is inserted, the rotation furnace A one-way ratchet gear is formed at the contact end of the knob and the anti-rotation ring, and the handle is fitted to the outside of the rotary knob and the anti-rotation ring, and a plurality of locking grooves and the protrusions are provided at a predetermined interval on the inner circumferential surface of the knob and the knob. It is formed to be engaged with each other as the handle is configured to be coupled to flow only left and right in the range of a predetermined width.

Such an emergency escape breathing opening and closing valve of the present invention can be used to easily open and close the opening and closing handle when using this apparatus when a fire occurs, breathing is stopped when the opening and closing handle is returned to the locking direction due to external influence during evacuation, fatal result May occur, but can be used safely to prevent such defects.

Hereinafter, with reference to the accompanying drawings of the present invention in detail as follows.

1 to 7 are views of the opening and closing valve of the emergency escape respirator according to the present invention, Figure 1 is a perspective view showing the opening and closing valve of the emergency escape respirator, Figure 2 is an exploded perspective view of the opening and closing valve of the emergency escape respirator respectively 3 is a cross-sectional view of the on-off valve of the emergency escape breathing apparatus, Figure 4 is a longitudinal cross-sectional view of the on-off valve of the emergency escape breathing apparatus.

5A and 5B show partial longitudinal cross-sectional views for explaining the principle of opening and closing, and FIGS. 6A and 6B show longitudinal cross-sectional views showing the opening and closing valves, and FIGS. 7A and 7B show the locking operation of the opening and closing valves. The longitudinal cross section shown is shown.

First, referring to Figures 1 to 4, the reference numeral 1 in the drawing shows an emergency escape respirator body, 2 shows a high-pressure valve body, the emergency escape respirator body 1 is provided with a discharge port (1a) at the upper end , The high pressure valve body 2 has a coupling portion (2a) is formed at the lower end, the discharge port (1a) and the coupling portion (2a) is screwed to form a screw on the inner, outer peripheral surface.

The high-pressure valve body 2 is formed in a ??-shape as a whole, and the first passage 2b is formed in the longitudinal direction up and down, and the second passage 2c is orthogonal to each other based on FIGS. 1 and 4. It is formed to cross, the coupling portion (2a) is formed at one end of the high pressure valve body 2, the opening and closing chamber (2d) is formed in the other end coupling portion (2g) of the high pressure valve body (2).

The lower end of the first passage (2b) of the high-pressure valve body 2 is fixed to the tube (3) inserted into the emergency escape respirator body (1) to guide the discharge of compressed air contained therein, the first The pressure gauge 4 is fixed to the upper end of the passage 2b, and the safety bolt 5 is coupled to the left end of the second passage 2c via the packing 5a, and the second passage 2c is The other end extends to the opening / closing chamber 2d.

The opening / closing adjustment bolt 7 is screwed into the opening / closing chamber 2d of the high-pressure valve body 2, and the opening / closing adjustment bolt 7 is in close contact with the right end of the second passage 2c, that is, the distribution port 2e. Or, the packing 7b which opens and closes the distribution port 2e while being separated is inserted.

The high pressure valve body 2 includes compressed air flowing into the opening and closing chamber 2d through the first passage 2b and the second passage 2c from the emergency escape respirator body 1 of the high pressure valve body 2. A third passage 2f is formed to guide the pressure reducer 8 connected to one side of the circumferential wall, and the pressure reducer 8 discharges the reduced pressure to a predetermined pressure suitable for breathing the inlet compressed air. ) Is formed.

Next, a configuration for opening and closing the opening and closing adjustment bolt 7 screwed to the opening and closing chamber 2d will be described with reference to FIGS. 5A and 5B. The opening and closing chamber 2d of the high pressure valve body 2 will be described. The opening and closing adjustment bolt (7) is screwed, the sleeve 9 is fixed to the outside thereof, the adjustment shaft 10 is rotatably inserted into the inner diameter of the sleeve (9), the adjustment shaft (10) The rotary knob 11 is fitted to the outer end of the nut and fastened with a nut 12. In addition, a pair of protrusions 10a are formed at the inner end of the control shaft 10, and a pair of slide grooves 7a are formed at both sides of the outer circumferential surface of the opening and closing adjustment bolt 7, so that the control shaft ( Both protrusions 10a of 10 are respectively inserted.

Accordingly, as shown in FIG. 5A, the packing 7b of the opening / closing adjustment bolt 7 is in close contact with the flow port 2e of the second passage 2c to block the passage, thereby rotating the rotary knob 11 to adjust the adjustment shaft ( When 10) rotates, the protruding section 10a of the control shaft 10 rotates the opening and closing adjustment bolt 7 to rotate the opening and closing adjustment bolt 7, and the opening and closing adjustment bolt 7 is the opening and closing room 2d. Since the screw is coupled to the inner and outer sides according to the rotation direction of the rotary knob 11, the opening and closing adjustment bolt (7) is moved to the outside as shown in Figure 5b the packing (7b) of the opening and closing adjustment bolt (7) ) Is separated from the distribution port 2e of the second passage 2c, so that the passage is opened. When the rotary knob 11 is rotated in the opposite direction, the opening / closing adjustment bolt 7 is moved inward. As shown in FIG. 5A, the packing 7b of the opening / closing adjustment bolt 7 is a distribution port of the second passage 2c. Close contact with (2e) again, the passage is blocked.

Conventionally, the on-off valve of the emergency escape respirator was configured as described above. Accordingly, when the rotary knob 11 is rotated in one direction, the passage is opened to discharge the compressed air through the pressure reducer 8, and then to the opposite direction. When rotated, the passage was closed and the discharge of compressed air was blocked. Since the rotary knob 11 is opened and closed by the rotation of the rotary knob 11 as described above, the rotary knob 11 is rotated without permission and the passage is closed so that the discharge of compressed air is blocked. It was. For example, the rotary knob 11 is closed by an object around the work place while the compressed air is blocked while it is being used at a fire site, causing trouble to the work and causing a safety accident to damage human life. This was to occur.

In the opening and closing valve of the emergency escape respirator as described above, the present invention is conceived to solve the problem that the discharge of compressed air is reduced or blocked by the closing knob 11, the present invention is an emergency escape respirator body Opening and closing adjustment bolt (7) is screwed to the opening and closing chamber (2d) of the high-pressure valve body (2) coupled to (1), and opening and closing the opening and closing adjustment bolt (7) to the sleeve (9) fixed to the outside The control shaft 10 is coupled to, in the opening and closing valve of the emergency escape respirator fixed to the rotary knob 11 at the end of the control shaft 10, the other end coupling portion (2g) of the high-pressure valve body (2) The anti-rotation preventing ring 14 is fitted to the outer side of the anti-rotation preventing ring 14, and the engaging groove 14c and the engaging protrusion 2h which are engaged with each other on the inner end portion of the reverse rotation preventing ring 14 and the other end coupling portion 2g. Is formed, the reverse rotation prevention ring 14 in a range of a predetermined width It is coupled to the left and right flow only, the spring 15 for elastically supporting the reverse rotation prevention ring 14 to the inside of the reverse rotation prevention ring 14 is inserted into the other end coupling portion (2g), One-way ratchet gears 11a and 14a are formed at the contact ends of the rotary knob 11 and the anti-rotation preventing ring 14, and the handles are moved to the outside of the rotary knob 11 and the anti-rotating ring 14. (13) is fitted and a plurality of locking grooves (11b) and locking projections (13b) are formed to be engaged with each other at regular intervals on a portion of the inner peripheral surface of the rotary knob 11 and the handle 13, the handle 13 is a predetermined width It is configured to be able to flow only from side to side in the range of.

In the drawings, reference numeral 16 denotes Teflon, and 17 and 18 denote O-rings, respectively.

Referring to the operation of the opening and closing valve of the emergency escape respirator according to the present invention as described above are as follows.

6A and 6B illustrate longitudinal cross-sectional views illustrating an opening and closing operation of the on / off valve. Hereinafter, the opening operation will be described with reference to FIGS. 3 to 6.

4, 5A and 6A are longitudinal cross-sectional views showing a state in which the valve is closed as shown in FIG. 4, and in this state, when the knob 13 is rotated counterclockwise as shown by the arrow, the rotary knob 11 And the locking groove 11b and the locking protrusion 13b of the handle 13 are engaged with each other, so that the rotary knob 11 rotates counterclockwise with the handle 13 and the adjustment shaft 10 fixed to the handle 13 is fixed. ) Rotates, and the protrusion 7a of the adjustment shaft 10 rotates the opening and closing adjustment bolt 7, and the opening and closing adjustment bolt 7 is rotated to move outward as shown in FIG. The distribution port 2e of the passage 2f is opened.

When the rotary knob 11 rotates in the counterclockwise direction and the valve is opened, the one-way gears 11a and 14a formed on the rotary knob 11 and the anti-rotation preventing ring 14 slip on each other. Since the anti-rotation ring 14 is repeatedly rotated from side to side as shown by an arrow shown in FIG. 6B, a click sound is generated, and the opening degree can be sensed.

7A and 7B are longitudinal cross-sectional views illustrating the locking operation of the on / off valve. Hereinafter, the closing operation of the valve will be described with reference to FIGS. 3 to 5 and 7A and b.

FIG. 5B is a longitudinal cross-sectional view of the valve in an open state as shown in FIG. 4. In this state, when the knob 13 is rotated in a clockwise direction as shown by the arrow, the rotation force is applied from the knob 13 to the rotary knob 11. Is transmitted, but at this time, the one-way gears 11a and 14a of the rotary knob 11 and the anti-rotation ring 14 are in a direction to catch each other, and the anti-rotation ring 14 and the high pressure valve body 2 Since the locking groove 14c and the locking protrusion 2h are formed and the reverse rotation preventing ring 14 is caught, the rotary knob 11 cannot rotate.

As described above, the on / off valve of the emergency escape respirator to which the present invention is applied cannot rotate the rotary knob 11 and the control shaft 10 when the knob 13 is simply rotated in the open state as shown in FIG. 7A. Accordingly, the handle 13, the rotary knob 11 and the control shaft 10 can not be rotated even in the natural state, even if the surrounding object is in contact with the handle 13 is applied without force, so the valve is closed. There is no work.

On the other hand, in the case of closing the valve in the open state as shown in Figure 7a to block the discharge of the gas as shown in the arrow shown in Figure 7b only to open while rotating to open, in this case the handle 13 is pushed inward While the reverse rotation prevention ring 14 is pushed inward, the rotary knob 11 and the one-way gears 11a and 14a of the reverse rotation prevention ring 14 are separated from each other as shown, and thus the handle 13 When the rotational force of) is transmitted to the rotary knob 11, the rotary knob 11 and the control shaft 10 rotate, and the opening / closing adjustment bolt 7 rotates inward to move inwardly, as shown in FIG. 5B. The outlet port 2e is blocked to block the discharge of gas.

As described above, the on / off valve of the emergency escape respirator is designed to prevent rotation by simply rotating the knob once the valve is open, so that the knob is in contact with the surrounding object and the knob is applied without rotation force. This prevents unauthorized rotation of the product, thereby preventing the problem that the gas emission is reduced or blocked without permission, thereby improving the safety and reliability of the product.

Claims (3)

The opening and closing adjustment bolt 7 is screwed into the opening and closing chamber 2d of the high pressure valve body 2 coupled to the emergency escape respirator body 1, and the opening and closing adjustment bolt 7 is fixed to the sleeve 9 fixed to the outside thereof. Is coupled to the control shaft 10 for opening and closing the rotating shaft 11 is fixed to the end of the control shaft 10, the opening and closing valve of the emergency escape respirator for opening and closing by rotating the rotary knob (11). The on / off valve of the emergency escape breathing apparatus of claim 1, further comprising an endless closing means for preventing the endless closing of the rotary knob. The method of claim 1, wherein the endless closing means is fitted to the outside of the other end coupling portion (2g) of the high-pressure valve body (2) is fitted with a reverse rotation prevention ring 14, the reverse rotation prevention ring (14) Engaging grooves 14c and engaging projections 2h engaged with each other are formed in the corresponding portions of the inner end portion and the other end coupling portion 2g, so that the reverse rotation preventing ring 14 can flow only left and right in a range of a predetermined width. Is coupled, the other end coupling portion (2g) is inserted into the spring (15) for elastically supporting the reverse rotation prevention ring 14 to the inside of the reverse rotation prevention ring 14, the rotary knob 11 And one-way ratchet gears 11a and 14a are formed at the contact end of the anti-rotation ring 14, and the knob 13 is fitted to the outside of the rotary knob 11 and the anti-rotation ring 14. Some of the inner circumferential surfaces of the rotary knob 11 and the handle 13 have a plurality of locking grooves 11b and locking protrusions 13b at regular intervals. Opening and closing valve of the emergency escape respirator, characterized in that the handle 13 is configured to be coupled to be movable only left and right in the range of a predetermined width. delete