CN106669058B

CN106669058B - Bottle head valve and working method thereof

Info

Publication number: CN106669058B
Application number: CN201510766027.6A
Authority: CN
Inventors: 顾磊
Original assignee: Jiangsu Huayan Marine Equipment Co ltd
Current assignee: Jiangsu Huayan Marine Equipment Co ltd
Priority date: 2015-11-11
Filing date: 2015-11-11
Publication date: 2021-12-24
Anticipated expiration: 2035-11-11
Also published as: CN106669058A

Abstract

The invention relates to a bottle head valve and a working method thereof, the bottle head valve comprises a valve body and a locking device, wherein a hand wheel is arranged on the valve body, a positioning piece is arranged at the lower end of the hand wheel, an annular groove with a downward opening is arranged at the lower side of the hand wheel, and inverted teeth are arranged on the inner top wall of the annular groove; the locking device comprises a movable check piece, a bolt and a spring, wherein the movable check piece can move along the axial direction of the valve body, the movable check piece is arranged in the annular groove, a through hole penetrates through the outer side wall of the movable check piece, and when the bolt penetrates through the through hole, the spring is in a compression state. The top surface of the movable check piece is also provided with check teeth which are used for being meshed with the inverted teeth, after the hand wheel moves upwards to a preset position, the bolt is pulled out, the movable check piece moves upwards, and the check teeth are meshed with the inverted teeth. According to the bottle head valve, the spring is matched with the movable check piece, the inverted teeth and the check teeth are meshed with each other to prevent the bottle head valve from being closed due to the rotation of the hand wheel, and the risk of suffocation is avoided.

Description

Bottle head valve and working method thereof

Technical Field

The invention relates to the technical field of emergency escape breathing devices, in particular to a bottle head valve for an emergency escape breathing device and a working method thereof.

Background

The emergency escape breathing device is escape equipment used in case of fire, and when the emergency escape breathing device is used, a user is easy to operate by mistake or unintentionally touches a barrier to close the emergency escape breathing device due to reasons of tension, confusion and the like, so that the emergency escape breathing device cannot work normally, and the escape probability is influenced.

Chinese patent No. CN201220322682.4, entitled a bottle head valve with a locking device for an emergency escape breathing device, discloses a bottle head valve with a locking device, which comprises a valve body and a locking device, wherein the valve body is provided with a hand wheel for controlling the valve body to open and close, and the inner side end of the hand wheel is provided with a protruding part extending axially; the locking device includes: the pressing cover, the bolt and the spring are arranged in the pressing cover; the spring is elastically matched with the rear end part of the bolt, the front end part of the bolt is a spring bolt, and the spring bolt extends out of the gland and is circumferentially arranged with the protruding part of the hand wheel. When the protruding part of the hand wheel is arranged opposite to the lock tongue, the lock tongue is pressed into the gland by the end surface of the protruding part (namely the whole pin is in the gland), and the valve body is closed; when the convex part of the hand wheel and the lock tongue are arranged in a staggered mode (namely, the lock tongue of the bolt extends out of the gland), the valve body is opened.

Only through the cooperation of spring bolt and spring, can avoid because of the hand wheel locking that the unconscious touched the cause, but in case cause the hand wheel locking because of reasons such as maloperation or unconscious touch, the bottle head valve can't reset, still can cause the user to take place to suffocate in the hood, has the potential safety hazard.

The technical problem to be solved in the field can not be suffocated even if misoperation occurs when people use the emergency escape breathing device.

Disclosure of Invention

The invention aims to provide a bottle head valve which is simple in structure and has a reset function so as to ensure safe use and a working method thereof.

The present invention provides a bottle head valve, comprising: the valve body is provided with a quincuncial hand wheel for controlling the opening and closing of the valve body, the lower end of the hand wheel is provided with a positioning piece which is used for preventing the hand wheel from excessively rotating and is fixed at the top of the valve body, an annular groove with a downward opening is arranged at the lower side of the hand wheel and at the inner side of the positioning piece, and the inner top wall of the annular groove is provided with inverted teeth; the locking device comprises a movable check piece, a bolt and a spring, wherein the movable check piece can move along the axial direction of the valve body, the movable check piece is arranged in an annular groove, the top of the inner side wall of the movable check piece is provided with a lug extending inwards, the spring is arranged below the lug and between the movable check piece and the wall body of the annular groove, the outer side wall of the movable check piece is provided with a first through groove, the inner side wall of the positioning piece is provided with a second through groove, the first through groove and the second through groove are matched to form a through hole during assembly, and when the bolt is arranged in the through hole in a penetrating manner, the spring is in a compressed state; the top surface of the movable check piece is further provided with check teeth which are used for being meshed with the inverted teeth, after the hand wheel moves upwards to a preset position, the bolt is pulled out, the spring resets and drives the movable check piece to move upwards, and the check teeth are meshed with the inverted teeth.

When the emergency escape breathing device with the bottle head valve is used, the hand wheel is rotated anticlockwise firstly to enable the hand wheel to move upwards to a preset position, the valve body is opened, the space at the bottom of the annular groove is expanded, the bolt inserted into the through hole is pulled out, the movable check piece moves upwards in the annular groove under the action of the spring, the check tooth of the movable check piece is meshed with the inverted tooth, and the hand wheel is prevented from rotating; even if maloperation appears in the use, pawl and non return tooth intermeshing prevent that the hand wheel rotation from causing the bottle head valve to close, avoid appearing stifling danger.

Furthermore, still be equipped with many beads on the lateral wall of hand wheel, increase the frictional force between hand and the hand wheel when rotatory, convenient operation.

Furthermore, the two first grooves are symmetrically arranged on two sides of the movable check piece; the two second grooves are symmetrically arranged on two sides of the positioning piece, and through holes formed in a matched mode are arranged on two sides of the valve body, so that the balance of the equipment is enhanced.

Furthermore, the pawl with the non return tooth is the cockscomb structure, easily joint cooperation.

Furthermore, the movable check piece is annular, and the edge of the movable check piece is provided with a guide groove which is matched with a guide rail which is arranged on the inner wall of the annular groove in a protruding mode, so that the movable check piece can only move along the axial direction of the valve body, and the movable check piece is prevented from rotating.

Furthermore, the movable check piece is arranged in a square shape, and a circular through hole is formed in the center of the movable check piece, so that the movable check piece can only move along the axial direction of the valve body in the annular groove, and the movable check piece is prevented from rotating.

The working method of the bottle head valve comprises the following steps: the hand wheel is rotated anticlockwise, so that the hand wheel moves upwards to a preset position, the valve body is opened, and the space at the bottom of the annular groove 6 is enlarged; then, the bolt inserted into the through hole is pulled out, and the movable check piece moves upwards in the annular groove under the action of the spring, so that the check teeth of the movable check piece are meshed with the inverted teeth, and the hand wheel is prevented from rotating.

The invention has the technical effects that: (1) compared with the prior art, the bottle head valve provided by the invention has the advantages that the cooperation of the spring and the movable check piece is utilized, the inverted teeth and the check teeth are arranged to be meshed with each other to prevent the bottle head valve from being closed due to the rotation of the hand wheel, and the risk of suffocation is avoided; (2) the side wall of the hand wheel is provided with a convex edge, so that the operation of a user is convenient; (3) the bolt sets up in the through-hole of valve body both sides, strengthens the equilibrium of equipment.

Drawings

The invention is described in further detail below with reference to the drawings of the specification:

FIG. 1 is a schematic view of a cylinder head valve of the present invention;

FIG. 2 is a schematic front cross-sectional view of the structure of FIG. 1;

FIG. 3 is a top partial perspective view of FIG. 1;

FIG. 4 is a schematic structural view of the pawl and the check tooth;

FIG. 5 is a schematic view of the engagement of the inverted teeth and the check teeth.

In the figure: the hand wheel 1, pawl 11, setting element 2, bolt 3, activity non return 4, non return tooth 41, spring 5, annular groove 6, lug 7, bead 8, valve body 9.

Detailed Description

Example 1

As shown in fig. 1-5, the bottle valve of the present embodiment includes a valve body 9 and a locking device, a quincunx hand wheel 1 for controlling the valve body 9 to open and close is disposed on the valve body 9, a positioning member 2 for preventing the hand wheel 1 from over-rotating and fixed on the top of the valve body is disposed at the lower end of the hand wheel 1, a through annular groove 6 is disposed at the lower side of the hand wheel 1 and the inner side of the positioning member 2, inverted teeth 11 are disposed on the inner top wall of the annular groove 6, and a convex rib is further disposed on the side wall of the hand wheel 1; the locking device comprises a movable check piece 4, a bolt 3 and a spring 5, wherein the movable check piece 4 is arranged in an annular groove 6, the movable check piece 4 is annular, the edge of the movable check piece is provided with a guide groove and is matched with a guide rail which is convexly arranged on the inner wall of the annular groove, so that the movable check piece 4 can only move along the axial direction of the valve body, and the movable check piece 4 is prevented from rotating; this movable non return piece 4's inside wall top is equipped with inwardly extending lug 7, spring 5 locates between this lug 7 and annular groove 6's the lower wall, movable non return piece's lateral wall symmetry is equipped with two first recesses that run through, the inside wall symmetry of setting element is equipped with two second recesses that run through, corresponding first recess and the cooperation of second recess form the through-hole of locating the valve body both sides during the assembly, when bolt 3 wears to locate in the through-hole, spring 5 is in compression state. The top surface of the movable check piece 4 is provided with check teeth 41, the bolt 3 is pulled out after the hand wheel 1 moves upwards to a preset position, the movable check piece 4 moves upwards, and the check teeth 41 are meshed with the inverted teeth 11.

When the bottle head valve is assembled, the bolt 3 penetrates through the through hole, and the spring 5 is in a compressed state; when the bottle head valve is used, firstly, the hand wheel 1 is rotated anticlockwise to enable the hand wheel to move upwards to a preset position, the valve body is opened, the space at the bottom of the annular groove 6 is expanded, then the bolt 3 inserted into the through hole is drawn out, the movable check piece 4 moves upwards in the annular groove 6 under the action of the spring 5, the check tooth 41 of the movable check piece 4 is meshed with the inverted tooth 11, and the hand wheel is prevented from rotating; even if maloperation appears in the use, pawl and non return tooth intermeshing prevent that the hand wheel rotation from causing the bottle head valve to close, avoid appearing stifling danger.

Example 2

On the basis of embodiment 1, the present embodiment has a modification that the movable check member 4 is square, and the center thereof is provided with a circular through hole, so that the movable check member 4 can only displace along the axial direction of the valve body in the annular groove 6, and the movable check member 4 is prevented from rotating.

It should be understood that the above examples are only for clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And such obvious variations or modifications which fall within the spirit of the invention are intended to be covered by the scope of the present invention.

Claims

1. A cylinder head valve comprising: the valve body (9) and a locking device, a quincuncial hand wheel (1) for controlling the valve body to open and close is arranged on the valve body (9), and the valve is characterized in that a positioning piece (2) which prevents the hand wheel from excessively rotating and is fixed at the top of the valve body is arranged at the lower end of the hand wheel (1), an annular groove (6) with a downward opening is arranged at the lower side of the hand wheel (1) and at the inner side of the positioning piece (2), and inverted teeth (11) are arranged on the inner top wall of the annular groove (6);

the locking device includes: the movable check piece (4), the bolt (3) and the spring (5) can axially move along the valve body (9), the movable check piece (4) is arranged in the annular groove (6), the top of the inner side wall of the movable check piece (4) is provided with a convex block (7) extending inwards, and the spring (5) is arranged below the convex block (7) and between the movable check piece (4) and the wall body of the annular groove (6);

the outer side wall of the movable check piece (4) is provided with a through first groove, the inner side wall of the positioning piece (2) is provided with a through second groove, the first groove and the second groove are matched to form a through hole during assembly, and when the bolt (3) is arranged in the through hole in a penetrating mode, the spring (5) is in a compressed state;

still be equipped with on the top surface of activity non return spare (4) be used for with non return tooth (41) of pawl (11) meshing, after hand wheel (1) upwards displacement to predetermineeing the position, spring (5) will activity non return spare (4) upwards displacement, non return tooth (41) with pawl (11) meshing.

2. A valve as claimed in claim 1, characterised in that the hand wheel (1) is provided with a plurality of ribs (8) on its side wall.

3. The valve according to claim 1, wherein the first grooves are two and are symmetrically arranged on both sides of the movable check member (4); the two second grooves are symmetrically arranged on two sides of the positioning piece (2), and through holes formed in a matched mode are arranged on two sides of the valve body.

4. A valve as claimed in claim 1, characterised in that the inverted tooth (11) is serrated with the non-return tooth (41).

5. A valve as claimed in claim 1, characterised in that the movable check member (4) is annular and has a guide groove at its edge for cooperating with a guide rail projecting from the inner wall of the annular recess (6) to prevent rotation of the movable check member.

6. A valve as claimed in claim 1, characterised in that said movable non-return means (4) are arranged in a square shape with a circular through hole in the centre.

7. The method of operating a bottle head valve as set forth in claim 1, comprising: rotating the hand wheel anticlockwise so that the hand wheel moves upwards to a preset position, opening the valve body and expanding the space at the bottom of the annular groove;

then, the bolt inserted into the through hole is pulled out, and the movable check piece moves upwards in the annular groove under the action of the spring, so that the check teeth of the movable check piece are meshed with the inverted teeth, and the hand wheel is prevented from rotating.