CN212672615U - Threaded joint device with anti-blocking function - Google Patents
Threaded joint device with anti-blocking function Download PDFInfo
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- CN212672615U CN212672615U CN202021071764.7U CN202021071764U CN212672615U CN 212672615 U CN212672615 U CN 212672615U CN 202021071764 U CN202021071764 U CN 202021071764U CN 212672615 U CN212672615 U CN 212672615U
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- external thread
- thread fastening
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Abstract
The utility model discloses a take dead screwed joint device of anti-sticking, including external screw thread fastener, set up the hand wheel of external screw thread fastener below sets up spring between hand wheel and the external screw thread fastener, and run through external screw thread fastener, spring, hand wheel and the high-pressure intake pipe of being connected with the relief pressure valve. The utility model discloses a run through external screw thread fastening pipe and hand wheel with high-pressure intake pipe and be connected with the relief pressure valve to be in the same axle when making high-pressure gas cylinder and relief pressure valve connect, can not take place the dead phenomenon of screw thread card when the replacement of the high-pressure gas cylinder of being convenient for, need not the secondary butt joint, improve work efficiency, improve the security that the staff used.
Description
Technical Field
The utility model relates to a positive pressure formula fire control air respirator field, concretely relates to threaded joint device of dead function of anti-sticking in area.
Background
The positive pressure type fire-fighting air respirator is a self-supporting open type fire-fighting air respirator, which is mainly suitable for places such as fire fighting, chemical engineering, ships, petroleum, smelting, factories and mines, laboratories and the like, so that fire fighters or rescue personnel can safely carry out fire extinguishing, rescue and relief work and rescue work in severe environments filled with dense smoke, toxic gas, steam or oxygen deficiency. The series products are composed of main core components such as a mask, an air supply valve, a back plate, a high-pressure air bottle, a pressure reducing valve and the like.
Compressed air of the high-pressure air bottle is connected with the pressure reducing valve through the threaded connector, primary pressure reduction is carried out on the high-pressure air through the pressure reducing valve, and then the high-pressure air is conveyed to the mask air supply valve through a pipeline to be used by a user. The interface thread of the high-pressure gas cylinder is generally an internal thread, and the thread of the corresponding pressure reducing valve is generally an external thread.
The air of high-pressure gas cylinder belongs to the consumable article, so often need quick change supply gas cylinder, because the reason of air respirator structure itself, the influence of plus environment, when high-pressure gas cylinder and relief pressure valve screw butt joint, the axiality is difficult to guarantee, causes the dead phenomenon of screw thread card easily, and the screw thread card can cause two consequences after dying: (1) if the condition is not serious, two devices need to be loosened, secondary butt joint is needed, time is delayed, and the working efficiency is influenced; (2) if the screw thread is seriously stuck, the screw thread can be damaged and cannot be used continuously, and the work efficiency is seriously influenced or even the life safety is threatened due to the dead screw thread.
Disclosure of Invention
Utility model purpose: the utility model provides a threaded joint device of dead function of anti-sticking has been solved to the above-mentioned problem that prior art exists.
The technical scheme is as follows: a threaded joint device with an anti-seize function, comprising:
the high-pressure air inlet pipe is characterized by comprising an external thread fastening device, a hand wheel arranged below the external thread fastening device, a spring arranged between the hand wheel and the external thread fastening device, and a high-pressure air inlet pipe penetrating through the external thread fastening device, the spring and the hand wheel and connected with the pressure reducing valve.
In a further embodiment, the external thread fastening device comprises an external thread fastening pipe and L-shaped locking frames which are uniformly distributed at the bottom end of the external thread fastening pipe and used for locking; the diameter of one end of the high-pressure air inlet pipe connected with the high-pressure air bottle is the same as the outer diameter of the external thread fastening pipe, and the high-pressure air inlet pipe is arranged at one end of the external thread fastening pipe; the diameter of the end, connected with the high-pressure air inlet pipe, of the high-pressure air inlet pipe is the same as the outer diameter of the external thread fastening pipe, and the end, connected with the external thread fastening pipe, of the high-pressure air inlet pipe is installed at one end of the external thread fastening pipe, so that the high-pressure air inlet pipe and the pressure reducing valve are prevented from being clamped by threads when in butt joint on the same shaft when in thread butt joint.
In a further embodiment, the hand wheel is provided with a clamping groove corresponding to the L-shaped locking frame, and the height of the clamping groove is the same as that of the L-shaped locking frame, so that the external thread fastening device and the hand wheel can be ensured to be embedded together.
In a further embodiment, a circular groove is formed in one end, fixed by the high-pressure air inlet pipe and the external thread fastening pipe, of the high-pressure air inlet pipe, a sealing ring is installed in the groove, the high-pressure air inlet pipe can directly reach the sealing position under the action of opposite force of the high-pressure air cylinder and the pressure reducing valve, and air in the high-pressure air cylinder is prevented from leaking.
In a further embodiment, the external thread fastening pipe is in threaded connection with a cylinder valve interface of the high-pressure gas cylinder, and the distance between the L-shaped locking frame and the external thread fastening pipe is greater than the thickness of the cylinder valve interface, so that the high-pressure gas cylinder can be clamped in the L-shaped locking frame when being connected with the threaded joint, and can not deviate when being stressed.
In a further embodiment, a fixing plate is arranged below two sides of the pressure reducing valve, and two through holes are formed in the fixing plate to provide a carrier for connecting the pressure reducing valve to the back plate.
In a further embodiment, the distance between the fixing plates is the same as the width of the bottom end of the back plate, so that the gap between the pressure reducing valve and the back plate when the pressure reducing valve is fixed on the back plate can be reduced, and the pressure reducing valve and the back plate are ensured not to deviate due to external force.
Has the advantages that: the utility model relates to a take screwed joint device of anti-sticking dead function is through running through external screw thread fastening pipe and hand wheel with high-pressure intake pipe and being connected with the relief pressure valve to be in the same axle when making gas cylinder and relief pressure valve connect, can not take place the dead phenomenon of screw thread card when the replacement of the gas cylinder of being convenient for, need not the secondary butt joint, improve work efficiency, improve the security that the staff used.
Drawings
Fig. 1 is an exploded view of the overall structure of the present invention.
Fig. 2 is a front view of the main core of the fire-fighting air respirator of the present invention.
Fig. 3 is a schematic view of the overall structure of the main core of the fire-fighting air respirator of the present invention.
The figures are numbered: the device comprises a sealing ring 1, a high-pressure air inlet pipe 2, an external thread fastening pipe 3, an L-shaped locking frame 4, a spring 5, a hand wheel 6, a pressure reducing valve 7, a back plate 8, a high-pressure air bottle 9 and a bottle valve connector 10.
Detailed Description
In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring the present invention.
As shown in fig. 1, a threaded joint device with an anti-seize function, hereinafter referred to as "the device" for short. The device comprises an external thread fastening device, a connecting assembly and a sealing pressure-reducing assembly. The external thread fastening device comprises an external thread fastening pipe 3 and four L-shaped locking frames 4, wherein the four L-shaped locking frames 4 are respectively fixed at the bottom end of the external thread fastening pipe 3 and are equal in spacing; the connecting assembly comprises a hand wheel 6, a spring 5 and a high-pressure air inlet pipe 2, a groove corresponding to the L-shaped locking frame 4 of the external thread fastening device is formed in the hand wheel 6, the spring 5 is installed in the external thread fastening pipe 3, and the high-pressure air inlet pipe 2 penetrates through the external thread fastening pipe 3 and the spring 5; the sealing pressure reducing assembly comprises a sealing ring 1 and a pressure reducing valve 7, the sealing ring 1 is installed above the high-pressure air inlet pipe 2, and the pressure reducing valve 7 is installed below the hand wheel 6.
The high pressure intake pipe 2 one end runs through spring 5 and hand wheel 6 and with relief pressure valve 7 spiro union, the other end runs through at external screw thread fastening pipe 3 and the diameter of high pressure intake pipe 2 is the same with external screw thread fastening pipe 3 at both junctions, has seted up annular groove simultaneously at the upper surface of junction, installs sealing washer 1 in the recess.
As shown in fig. 2 to 3, a cylinder valve interface 10 is installed on a high-pressure gas cylinder 9, a thread is installed in the cylinder valve interface 10, and is embedded with an external thread on an external thread fastening pipe 3, when the high-pressure gas cylinder 9 is installed on the external thread fastening device, the cylinder valve interface 10 is in threaded connection with the external thread fastening pipe 3, the distance from an L-shaped locking frame to the external thread fastening pipe 3 is greater than the thickness of the cylinder valve interface 10, (the diameter of the cylinder valve interface is generally 30mm or 32mm, and the distance from the L-shaped locking frame to the center of the external thread fastening pipe is 17.5 mm), and after the cylinder valve interface 10 is connected with the external thread fastening device, the high-pressure gas cylinder 9 is fixed on the external thread fastening device by the L-shaped locking frame, so that the high-; a back plate 8 is installed below the pressure reducing valve 7, fixing plates are arranged below two sides of the pressure reducing valve 7, and two through holes are formed in the fixing plates and connected with the back plate 8 through bolts.
The specific working process is as follows: when the high-pressure gas cylinder 9 and the pressure reducing valve 7 are pressed in opposite directions, the high-pressure gas inlet pipe 2 can reach the position where the high-pressure gas cylinder 9 is sealed, the outer part of the internal thread of the high-pressure gas cylinder 9 is located inside the hand wheel 6, the high-pressure gas inlet pipe 2 of the high-pressure gas cylinder 9 and the pressure reducing valve 7 is located on the same axis to the maximum extent, the hand wheel 6 is screwed at the moment, and the probability that the internal thread and the external thread are blocked is very low.
When the high-pressure gas cylinder 9 and the pressure reducing valve 7 are pressed in opposite directions, the built-in spring 5 can push the external thread fastening device to the high-pressure gas cylinder 9 with internal threads, and when the hand wheel 6 is rotated, the external thread fastening device can be automatically meshed with the internal threads until being fastened. The external thread fastening device and the hand wheel 6 are in a movable state, and the screwing position of the hand wheel 6 is not changed no matter what butt joint state the high-pressure gas cylinder 9 and the pressure reducing valve 7 are in.
Compared with the prior art, the utility model has the advantages of it is following: (1) the high-pressure gas bottle 9 screwed on the external thread fastening pipe 3 and the high-pressure gas inlet pipe 2 are positioned on the same axis to the maximum extent through the external thread fastening device, so that the probability of blocking when the bottle valve interface 10 is screwed on the external pressure reducing valve 7 when the hand wheel 6 is screwed is reduced; (2) a spring 5 is arranged in a hand wheel 6, and a high-pressure air inlet pipe 2 penetrates through the spring 5 and is in threaded connection with a pressure reducing valve 7, so that an external thread fastening pipe 3 can be meshed with an internal thread of a cylinder valve connector 10 and pushed to a high-pressure gas cylinder 9; (3) because L shape locking frame and hand wheel 6 looks gomphosis for be in the active state between external screw thread fastener and the hand wheel 6, the staff of being convenient for operates.
As mentioned above, although the present invention has been shown and described with reference to certain preferred embodiments, it should not be construed as limiting the invention itself. Various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (7)
1. The utility model provides a take screwed joint device of dead function of anti-sticking, characterized by includes:
the high-pressure air inlet pipe is characterized by comprising an external thread fastening device, a hand wheel arranged below the external thread fastening device, a spring arranged between the hand wheel and the external thread fastening device, and a high-pressure air inlet pipe penetrating through the external thread fastening device, the spring and the hand wheel and connected with the pressure reducing valve.
2. The threaded joint device with the anti-seizing function according to claim 1, wherein: the external thread fastening device comprises an external thread fastening pipe and an L-shaped locking frame which is uniformly distributed at the bottom end of the external thread fastening pipe and used for locking.
3. The threaded joint device with the anti-seizing function according to claim 2, wherein: the hand wheel is provided with a clamping groove corresponding to the L-shaped locking frame, and the height of the clamping groove is the same as that of the L-shaped locking frame.
4. The threaded joint device with the anti-seizing function according to claim 2, wherein: the high-pressure air inlet pipe is provided with a circular groove at one end fixed with the external thread fastening pipe, and a sealing ring is arranged in the groove.
5. The threaded joint device with the anti-seizing function according to claim 2, wherein: the external thread fastening pipe is in threaded connection with a cylinder valve interface of the high-pressure gas cylinder; the distance between the L-shaped locking frame and the external thread fastening pipe is larger than the thickness of the cylinder valve interface.
6. The threaded joint device with the anti-seizing function according to claim 2, wherein: the diameter of one end of the high-pressure air inlet pipe connected with the high-pressure air bottle is the same as the outer diameter of the external thread fastening pipe, and the high-pressure air inlet pipe is installed at one end of the external thread fastening pipe.
7. The threaded joint device with the anti-seizing function according to claim 6, wherein: the fixed plates are arranged below two sides of the pressure reducing valve, two through holes are formed in the fixed plates, and the distance between the fixed plates is the same as the width of the bottom end of the back plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021071764.7U CN212672615U (en) | 2020-06-11 | 2020-06-11 | Threaded joint device with anti-blocking function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021071764.7U CN212672615U (en) | 2020-06-11 | 2020-06-11 | Threaded joint device with anti-blocking function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212672615U true CN212672615U (en) | 2021-03-09 |
Family
ID=74823108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021071764.7U Active CN212672615U (en) | 2020-06-11 | 2020-06-11 | Threaded joint device with anti-blocking function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212672615U (en) |
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2020
- 2020-06-11 CN CN202021071764.7U patent/CN212672615U/en active Active
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