CN216913458U

CN216913458U - Oxygen bomb autogiration fixing device

Info

Publication number: CN216913458U
Application number: CN202121564276.4U
Authority: CN
Inventors: 耿志勇; 黄彦东; 张红娜
Original assignee: Jiangsu Wanbiao Inspection Co ltd
Current assignee: Jiangsu Wanbiao Inspection Co ltd
Priority date: 2021-07-11
Filing date: 2021-07-11
Publication date: 2022-07-08
Anticipated expiration: 2031-07-11

Abstract

The utility model discloses an automatic rotating and fixing device for an oxygen bomb, which comprises: an air inlet connector in which a conical spring and a valve are accommodated; a locking nut connected to a front end of the air inlet connector by a screw; a step control bushing has a C-shaped retaining ring externally mounted thereon and connected to the rear end of an air inlet fitting with a sealing ring disposed therebetween, a sleeve fitted over the control bushing, and an air outlet fitting secured thereto at its rear end by a threaded fitting. By moving the air outlet coupling inwardly inside the socket, the valve is moved away from the sealing ring to form an air passage for compressed air to be operated by the driving tool.

Description

Oxygen bomb autogiration fixing device

Technical Field

The utility model relates to a connector, in particular to an automatic rotating and fixing device for an oxygen bomb.

Background

In use of pneumatic equipment, a connector is typically used to connect the tool to the air outlet tube of a pneumatic compressor so that compressed air can be directed to drive the tool into operation. An oxygen bomb is a core component of calorimeter equipment, such as an explosion-heated calorimeter. When the oxygen bomb is in a working state, 3MPa of oxygen needs to be filled into the oxygen bomb, or the oxygen bomb is vacuumized. When the interior of the oxygen bomb is vacuumized, the vacuum degree is required to be below 400Pa, and the oxygen bomb is required to bear the pressure of more than 30 MPa. In addition, the oxygen bomb should have the characteristics of corrosion resistance, oxidation resistance, high pressure resistance, high temperature resistance, good air tightness and the like. Because the oxygen bomb adopts electric ignition when working, the oxygen bomb is also required to have good two-pole insulating property. In order to realize the internal sealing of the oxygen bomb, the oxygen bomb at present mainly realizes the vacuum pumping and sealing through the following structures, namely: the prior art construction of a mid-oxygen bomb autorotation fixture connector generally includes a tube fitting, a socket, a control ring, a tool adaptor, a compression spring, a plurality of steel balls, a C-shaped retaining ring externally mounted on the socket to retain the control ring on the socket; the socket has a plurality of circular holes for disposing steel therein inside the control ring, the steel balls being extruded onto the balls, respectively. The compression spring is mounted on a socket within the control ring. The pipe joint is fixed on the rear end of the socket through a screw. After the tool adaptor is connected to the cartridge autogiration fixture, the control ring must be pushed back, allowing the steel ball to partially protrude beyond the circular hole in the socket so that the tool adaptor can be inserted into the socket. Once the insertion tool adapter is in the socket, the pushing force is immediately released from the control ring, allowing the compression spring to push the control ring back to the original position. Thus, the control ring forces the steel balls to be respectively disposed in the circular grooves on the outer wall of the tool adapter, and the tool adapter is firmly held on the connector. One drawback of this oxygen bomb autogiration fixture connector structure is that the tool adaptor cannot be held stably by the steel ball and air leakage problems can often occur. Another disadvantage of this configuration of the oxygen bomb autorotation fixture connector is that the components of the connector are prone to wear due to the unstable connection between the steel ball and the tool adapter.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an automatic rotating and fixing device for an oxygen bomb, which has the following specific technical scheme: an oxygen bomb autorotation fixture device comprising: lock nut, air inlet connector, conical spring, valve, sealing ring, control bush, C shape retaining ring, socket and air outlet connector, its characterized in that: the lock nut includes a hexagonal body having a tapered portion extending from one end thereof, defining therein a circular hole passing through a central axis thereof and an internal thread on an inner wall surface thereof; the air inlet connector includes a stepped connection end at a front portion, a front male threaded portion for connection with the female thread of the lock nut, a hexagonal body and a rear male threaded portion, and has a hole therein for receiving the conical spring; a conical spring received in a bore of the intake fitting, the valve including a unitary front axle for retaining the conical spring, an integral annular projection on an outer wall surface thereof, and a hollow valve body having a plurality of through-holes; an aperture around its perimeter; the sealing ring is arranged to block the bore of the valve. The control bushing is a stepped tube with a circular groove on the outer surface of its smaller end, a bore hole through the central axis. Its smaller end is an internally threaded portion on the inner wall surface of its larger end and a circular hole passing through the central axis of its larger end and communicating with the bore of its smaller end; the C-shaped retaining ring is fixed in the circular groove of the control bushing;

as a preferred embodiment, it is preferred that: the socket includes a knurled outer surface portion and defines therein, in proper order, a front circular aperture, an inner reduced intermediate circular aperture, the air outlet coupling defining an air passageway through its central axis including, in proper order, a stepped tubular front end having on an inner wall surface of its front wall a recessed portion, a recessed groove and internal threaded portion, a front external threaded portion, a hexagonal body and a rear external threaded portion;

as a preferred embodiment, it is preferred that: the sealing ring is placed in the internal thread part of the control bush; a control bush is fixed in the air intake joint, the internal thread part of which is firmly screwed with the rear thread part of the air intake joint, the sealing ring is pressed, the conical spring forces the valve to move in the sealing ring, so that the hole of the valve is blocked by the sealing ring, then the internal thread part connecting the locking nut to the air inlet connector is screwed with the front external thread part of the air inlet connector, and the air outlet coupling is connected to the socket, and the front external thread part is screwed with the internal thread part of the socket;

as a preferred embodiment, it is preferred that: when the front male threaded portion of the air outlet coupling is screwed further inwardly with the female threaded portion of the socket, the recessed portion of the air outlet coupling immediately urges the valve to move away from the sealing ring and the front end of the air outlet coupling against the side wall surface of the sealing ring, allowing compressed air from the air inlet fitting to flow from the bore into the hollow valve body;

as a preferred embodiment, it is preferred that: the valve drives the tool through the air passage of the air outlet coupling.

Advantageous technical effects

With the above structure, the compressed air is completely used for driving the tool, and possible air leakage problems are eliminated, and quick disassembly and assembly can be realized.

Drawings

Fig. 1 is a perspective exploded view of the present invention.

FIG. 2 is a perspective assembly view thereof;

figure 3 shows the structure of the utility model in an airtight condition.

Reference numerals are as follows: the locking nut 2, the hexagonal body 21, the tapered portion 22, the internal threaded portion 23, the round hole 24 intake fitting 3, the connection end 31, the front external threaded portion 32, the hexagonal body 33, the external threaded portion 34, the hole 35, the conical spring 4, the valve 5, the integral front shaft 51, the annular protrusion 52, the hollow valve body 53, the hole 54, the seal ring 6, the control bushing 7, the circular groove 71, the bore 72, the internal threaded portion 73, the round hole 74, the C-shaped retaining ring 8, the socket 9, the outer surface portion 95, the front round hole 91, the internal threaded portion 92, the groove 93, the middle round hole 94, the air outlet coupling 10, the air passage 101, the stepped tubular front end 102, the recessed portion 103, the front external threaded portion 104, the hexagonal body 105, and the rear external threaded portion 106.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model. In addition, the technical features involved in the respective embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

Referring to fig. 1 and 2, there is shown an oxygen bomb autorotation fixture connection embodying the present invention comprising a lock nut 2, an air inlet fitting 3, a conical spring 4, a valve 5, a sealing ring 6, a control bushing 7, a C-shaped retaining ring 8, a socket 9 and an air outlet coupling 10. The lock nut 2 includes a hexagonal body 21 having a tapered portion 22 extending from one end thereof, a circular hole 24 defined therethrough on a central axis thereof and an internal thread 23 on an inner wall surface thereof. The air inlet connector 3 comprises a stepped connection end 31 at the front, a front male threaded portion 32 for connection with the female thread 23 of the lock nut 2, a hexagonal body 33 and a rear male threaded portion 34, and has a hole 35 therein for receiving the conical spring 4. The conical spring 4 is accommodated in the hole 35 of the intake joint 3, and the valve 5 includes an integral front shaft 51 for holding the conical spring 4, an integral annular projection 52 on an outer wall surface thereof, and a hollow valve body 53 having a plurality of through holes. An aperture 54 around its perimeter. The sealing ring 6 is arranged to block the bore 54 of the valve 5. The control bush 7 is a stepped tube having a circular recess 71 on the outer surface of its smaller end, a bore 72 passing through the central axis. Its smaller end is an internally threaded portion 73 on the inner wall surface of its larger end and a circular hole 74 passing through the central axis of its larger end and communicating with the bore 72 of its smaller end; the C-shaped retaining ring 8 is fixed in the circular groove 71 of the control bush 7. The socket 9 comprises a knurled outer surface portion 95 and defines therein, in proper order, a front circular bore 91, an inner reduced intermediate circular bore 94, and the air outlet coupling 10 defining an air passage 101 through its central axis comprises, in proper order, a stepped tubular front end 102 having on the inner wall surface of its front wall a recessed portion 103, a recess 93 and an internal threaded portion 92, a front external threaded portion 104, a hexagonal body 105 and a rear external threaded portion 106.

Referring to fig. 1-3, after the control bush 7 is inserted through the front circular hole 91 of the socket 9, the C-shaped retaining ring 8 is secured in the circular groove 71 of the control bush 7, and then the control bush 7 is pushed backwards to allow the C-shape to be set in the groove 93 of the socket 9 before the middle circular hole 94. The sealing ring 6 is placed in the internally threaded portion 73 of the control bush 7. In the air intake joint 3 is fixed a control bush 7, the female threaded portion 73 of which is firmly screwed with the rear threaded portion of the air intake joint 3, allowing the sealing ring 6 to be pressed, the conical spring 4 forces the valve 5 to move inside the sealing ring 6, so that the hole 54 of the valve 5 is blocked by the sealing ring 6, then the female threaded portion 23 connecting the locking nut 2 to the air inlet connector 3 is screwed with the front male threaded portion 32 of the air inlet connector 3, and the air outlet coupling 10 is connected to the socket 9, the front male threaded portion 104 of which is screwed with the female threaded portion 92 of the socket 9.

Further, the following embodiments are also included: an automatic oxygen bomb rotary fixing device, a locknut 2, an air inlet joint 3, a conical spring 4, a valve 5, a seal ring 6, a control bush 7, a C-shaped retaining ring 8, a socket 9 and an air outlet coupling 10, the locknut 2 comprising a first hexagonal body 21 having a tapered portion 22 extending from one end thereof, a first circular hole 24 and a first internal thread 23 defined therein through the central axis thereof on the inner wall surface thereof; the air inlet connector 3 comprises a stepped connection end 31 at the front, a first front male screw portion 32 for connection with the first female screw 23 of the lock nut 2, a hexagonal body 33 and a first rear male screw portion, and has a first hole 35 therein for receiving the conical spring 4; the conical spring 4 is accommodated in the first hole 35 of the intake joint 3, and the valve 5 includes an integral front shaft 51 for holding the conical spring 4, an integral annular projection 52 on an outer wall surface thereof, and a hollow valve body 53 having a plurality of through holes; a second aperture 54 around its perimeter; the sealing ring 6 is arranged to block the second hole 54 of the valve 5; the control bush 7 is a stepped pipe having a circular groove 71 on the outer surface of its smaller end, a bore 72 passing through the central axis, said smaller end of the control bush 7 being a second internal thread 73 on the inner wall surface of its larger end and a second circular hole 74 passing through the central axis of its larger end and communicating with the bore 72 of its smaller end; the C-shaped retaining ring 8 is fixed in the circular groove 71 of the control bush 7.

As a preferred embodiment, the socket 9 preferably includes a knurled outer surface portion 95 and defines therein, in proper order, a front circular bore 91, an inner reduced intermediate circular bore 94, an air outlet coupling 10 defining an air passage 101 through its central axis, including, in proper order, a stepped tubular front end 102 having on the inner wall surface of its front wall a recessed portion 103, a recess 93 and a third internal thread 92, a second front external thread portion 104, a second hexagonal body 105 and a second rear external thread portion 106.

As a preferred embodiment, the sealing ring 6 is preferably placed inside the second internal thread 73 of the control bush 7; in the intake nipple 3 is fixed a control bush 7, the second female screw 73 of which is firmly screwed with the rear screw portion of the intake nipple 3, the seal ring 6 is pressed in this condition, the conical spring 4 forces the valve 5 to move within the seal ring 6 so that the second hole 54 of the valve 5 is blocked by the seal ring 6, then the first female screw 23 connecting the lock nut 2 to the intake nipple 3 is screwed with the first front male screw portion 32 of the intake nipple 3, and the air outlet coupling 10 is connected to the socket 9, and the second front male screw portion 104 is connected with the third female screw 92 of the female screw socket 9.

As a preferred embodiment, preferably, when the second front male threaded portion 104 of the air outlet coupling 10 is screwed further inwards with the third female thread 92 of the socket 9, the recessed portion 103 of the air outlet coupling 10 immediately pushes the valve 5 away from the sealing ring 6 and the front end of the air outlet coupling 10 against the side wall surface of the sealing ring 6, allowing the compressed air from the air inlet joint 3 to flow from the second hole 54 into the hollow valve body 53.

As a preferred embodiment, the valve 5 preferably drives the tool through the air passage 101 of the air outlet coupling 10.

When the front male threaded portion 104 of the air outlet coupling 10 is screwed further inwards with the female threaded portion 92 of the socket 9, the recessed portion 103 of the air outlet coupling 10 immediately pushes the valve 5 away from the sealing ring 6 and the front end of the air outlet coupling 10 against the side wall surface of the sealing ring 6, allowing compressed air from the inlet fitting 3 to flow from the bore 54 into the hollow valve body 53. The valve 5 drives the tool through the air passage 101 of the air outlet coupling 10. With the above structure, the compressed air is completely used for driving the tool, and possible air leakage problems are eliminated, and quick disassembly and assembly can be realized.

It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the utility model, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. An oxygen bomb autorotation fixing device, comprising: lock nut (2), air inlet connector (3), conical spring (4), valve (5), sealing ring (6), control bush (7), C shape retaining ring (8), socket (9) and air outlet connector (10), its characterized in that: the lock nut (2) includes a first hexagonal body (21) having a tapered portion (22) extending from one end thereof, in which a first circular hole (24) passing through a central axis thereof and a first internal thread (23) are defined on an inner wall surface thereof; the air inlet connector (3) comprises a stepped connection end (31) at the front, a first front male portion (32) for connection with a first female thread (23) of the lock nut (2), a hexagonal body (33) and a first rear male portion (34), and in which there is a first hole (35) for receiving the conical spring (4); a conical spring (4) is accommodated in a first hole (35) of the intake joint (3), and the valve (5) includes an integral front shaft (51) for holding the conical spring (4), an integral annular projection (52) on an outer wall surface thereof, and a hollow valve body (53) having a plurality of through holes; a second aperture (54) around its periphery; the sealing ring (6) is arranged to block the second hole (54) of the valve (5); the control bush (7) is a stepped pipe, and is provided with a circular groove (71) on the outer surface of the smaller end thereof and a drilling hole (72) penetrating through the central axis, and the smaller end of the control bush (7) is provided with a second internal thread (73) on the inner wall surface of the larger end thereof and a second round hole (74) penetrating through the central axis of the larger end thereof and communicating with the drilling hole (72) of the smaller end thereof; the C-shaped retaining ring (8) is fixed in a circular groove (71) of the control bush (7).

2. The oxygen bomb autorotation fixture as claimed in claim 1, c h a r a c t e r i z e d in that the socket (9) comprises a knurled outer surface portion (95) and defines therein in proper order a front circular hole (91), an inner reduced middle circular hole (94), the air outlet coupling (10) defining the air passage (101) through its central axis comprising in proper order a stepped tubular front end (102) having on the inner wall surface of its front wall a recessed portion (103), a groove (93) and a third internal thread (92), a second front external thread portion (104), a second hexagonal body (105) and a second rear external thread portion (106).

3. The automatic rotating and fixing device for oxygen bomb as claimed in claim 2, characterized in that: the sealing ring (6) is placed in the second internal thread (73) of the control bush (7); in the intake fitting (3) is fixed a control bushing (7) whose second internal thread (73) is firmly screwed with the rear external thread portion (34) of the intake fitting (3), the sealing ring (6) is pressed in such a way that the conical spring (4) forces the valve (5) to move within the sealing ring (6) so that the second hole (54) of the valve (5) is blocked by the sealing ring (6), then the first internal thread (23) connecting the locking nut (2) to the intake fitting (3) is screwed with the first front external thread portion (32) of the intake fitting (3), and the air outlet coupling (10) is connected to the socket (9), the second front external thread portion (104) is connected with the third internal thread (92) of the female screw socket (9).

4. The oxygen bomb autorotation fixing device as claimed in claim 3, characterised in that when the second front male thread portion (104) of the air outlet coupling (10) is screwed further inwards with the third female thread (92) of the socket (9), the recessed portion (103) of the air outlet coupling (10) immediately pushes the valve (5) away from the sealing ring (6) and the front end of the air outlet coupling (10) against the side wall surface of the sealing ring (6), allowing the compressed air from the inlet fitting (3) to flow from the second hole (54) into the hollow valve body (53).

5. An oxygen bomb autorotation fixture as claimed in claim 4 characterised in that the valve (5) drives the tool through the air channel (101) of the air outlet coupling (10).