Gas meter, flow meter road locking device
Technical field:
The present invention relates to the connection member of a kind of gas meter, flow meter and air inlet pipeline, it is especially a kind of gas meter, flow meter road locking dress
Put.
Background technology:
With the raising of people's living standard, many is home-use to have gone up pipe gas, enters into user house in pipe gas
During front yard, typically will install switch valve and gas meter, flow meter, the inlet end of switch valve is used for being connected with main pipeline, and gas meter, flow meter passes through even
Take over to be connected with the outlet side of switch valve and communicate, at present, connecting tube generally comprises bend pipe, and the two ends of bend pipe all rotatably connect
There is nut, the two ends of bend pipe can be tightened on the outlet side of switch valve respectively by the internal thread on nut and the entering of gas meter, flow meter
On gas end, because common nut can be dismantled by random the carrying out of general spanner, therefore, people can tear open privately, private
Self installation gas meter, flow meter, thus the phenomenon stealing gas, gas leakage and gas meter, flow meter damage violating the regulations can be caused, or pulls gas meter, flow meter privately
Make gas meter, flow meter run-off the straight, can stop operating after gas meter, flow meter tilts certain angle and reach the purpose of surreptitiously gas.
Content of the invention:
The technical problem to be solved in the present invention be to provide one kind can effectively prevent people's private from tearing open, private and private dynamic gas meter, flow meter
And the gas meter, flow meter road locking device stealing gas, gas leakage and gas meter, flow meter damage phenomenon violating the regulations causing.
The technical solution of the present invention is to provide a kind of gas meter, flow meter road locking device with following structure: includes opening
Close valve and connecting tube, the inlet end of switch valve is used for being connected with main pipeline, and connecting tube includes bend pipe, and the two ends of bend pipe are all rotatable
Be connected with nut, on the external screw thread that the nut at bend pipe two ends is respectively used to be tightened on the outlet side of switch valve and the entering of gas meter, flow meter
On the external screw thread of gas port, wherein, one end that bend pipe is used for being connected with the outlet side of switch valve is provided with one section of plum blossom mouth of pipe, switch valve
The inner hole wall of outlet side be provided with the plum blossom connected in star matching with the plum blossom mouth of pipe, nut is cap nut of detaching proof.
Gas meter, flow meter road of the present invention locking device, wherein, cap nut of detaching proof include overcoat, inner sleeve, nut pad and
Multiple reeds, overcoat is located at the outside of inner sleeve, inside puts and is provided with internal thread, one end of each reed justifies circumferentially uniform company respectively
It is connected on the periphery wall of inner sleeve, the direction of the other end of each reed screws in opposite direction, overcoat with the interior internal thread putting
Multiple inclined-plane boss for blocking reed are uniformly provided with internal perisporium, the inclined-plane incline direction of inclined-plane boss with interior put interior
Screw thread screw that direction is identical, nut pad is located at the interior in the hole of overcoat and is located at the lower end of inner sleeve, and nut pad passes through spring
Collar is connected with overcoat.
After above structure, compared with prior art, gas meter, flow meter road of the present invention locking device have the advantage that due to
Nut is cap nut of detaching proof, when on the external screw thread of the outlet side that the nut at bend pipe two ends is tightened on switch valve respectively and gas meter, flow meter
After on the external screw thread of air inlet, people cannot tear open privately, privately install gas meter, flow meter, so as to effectively prevent from privately tearing open,
The phenomenon stealing gas, gas leakage and gas meter, flow meter damage violating the regulations privately installed gas meter, flow meter and cause, and because bend pipe is used for and opens
The one end closing the outlet side connection of valve is provided with one section of plum blossom mouth of pipe, and the inner hole wall of the outlet side of switch valve is provided with and the plum blossom mouth of pipe
The plum blossom connected in star matching, therefore after bend pipe is tightened on the outlet side external screw thread of switch valve by cap nut of detaching proof, curved
The plum blossom mouth of pipe of pipe can be inserted in the plum blossom connected in star on switch valve, and such bend pipe cannot switch valve relatively rotate,
That is, cannot pull and be connected to the gas meter, flow meter of the bend pipe other end and make gas meter, flow meter run-off the straight, such that it is able to prevent gas meter, flow meter
Stop operating and produce after tilting certain angle steals gas phenomenon.
When on the external screw thread of outlet side by cap nut of detaching proof, the two ends of bend pipe being spun on switch valve and the entering of gas meter, flow meter
When on the external screw thread of gas port, people can be by the overcoat of general spanner rotary nut, the at this moment outer inclined-plane boss meeting putting
Block reed, thus driving inner sleeve to be tightened on the external screw thread with the air inlet of gas meter, flow meter on the external screw thread of the outlet side of switch valve
On, when contrary direction rotary sleeve again, the reed inside putting can produce elastic deformation, slides along the inclined-plane on inclined-plane boss
Dynamic, thus inner sleeve can not be driven to rotate, in other words, only the two ends of bend pipe are screwed by rotating the overcoat of cap nut of detaching proof
On the external screw thread of the outlet side of switch valve and on the external screw thread of air inlet of gas meter, flow meter, and can not again bend pipe be spun down, this
The cap nut of detaching proof structure planting structure is simple, safe and reliable, easy to operate.
Brief description:
Fig. 1 is structural representation when gas meter, flow meter road of the present invention locking device is connected with gas meter, flow meter;
Fig. 2 is the mplifying structure schematic diagram of Fig. 1 breaker in middle valve;
Fig. 3 is the mplifying structure schematic diagram of connecting tube in Fig. 1;
Fig. 4 is the section mplifying structure schematic diagram of " a-a " in Fig. 1;
Fig. 5 is the section structure schematic diagram of " b-b " in Fig. 2;
Fig. 6 is the section structure schematic diagram of " c-c " in Fig. 3;
Fig. 7 is the cross section structure diagram of nut in Fig. 3;
Fig. 8 is perspective view when inner sleeve and reed connect in Fig. 7;
Fig. 9 is the present invention looks up structural representation of overcoat in Fig. 7.
Specific embodiment:
With reference to the accompanying drawings and detailed description gas meter, flow meter road of the present invention locking device is described further:
As shown in Figures 1 to 9, in this embodiment, gas meter, flow meter road of the present invention locking device include switch valve and
Connecting tube, the inlet end 1 of switch valve is used for being connected with main pipeline, and connecting tube includes bend pipe 4, and the two ends of bend pipe 4 are all rotatable
It is connected with nut 3, on the external screw thread of outlet side 2 that the nut 3 at bend pipe 4 two ends is respectively used to be tightened on switch valve and gas meter, flow meter 6
The external screw thread of air inlet 5 on, bend pipe 4 is used for one end of being connected with the outlet side 2 of switch valve and is provided with one section of plum blossom mouth of pipe 8, plum
First gasket seal 9 is cased with the bend pipe 4 at floral tube mouth 8, the inner hole wall of the outlet side 2 of switch valve is provided with and the plum blossom mouth of pipe 8
The plum blossom connected in star 7 matching, nut 3 is cap nut of detaching proof, and this cap nut of detaching proof specifically includes overcoat 12, inner sleeve 11, nut
Pad 10 and four reeds 13, overcoat 12 is located at the outside of inner sleeve 11, and inner sleeve 11 is provided with internal thread 14, and the one of each reed 13
End is justified on the circumferentially uniform periphery wall being riveted on inner sleeve 11 respectively, in the direction of the other end of each reed 13 and inner sleeve 11
Screwing of internal thread 14 is in opposite direction, and overcoat 12 internal perisporium is uniformly provided with eight inclined-plane boss 15 for blocking reed 13,
The inclined-plane incline direction of inclined-plane boss 15 and the internal thread 14 in inner sleeve 11 screw that direction is identical, nut pad 10 is located at overcoat
12 interior in the hole and the lower end positioned at inner sleeve 11, nut pad 10 is connected with overcoat 12 by spring collar 9, the lower end of bend pipe 4
It is connected with seal nipple 16, between seal nipple 16 and bend pipe 4, is provided with sealing ring 19, seal nipple 16 lower end is cased with the second sealing
Pad 17, seal nipple 16 and bend pipe 4 joint are cased with seal nipple set 18, the switch in the locking device of gas meter, flow meter road of the present invention
The other structures of valve are conventional prior, therefore here does not repeat.
Embodiment described above is only that the preferred embodiment of the present invention is described, the not model to the present invention
Enclose and be defined, on the premise of without departing from design spirit of the present invention, the technical side to the present invention for the those of ordinary skill in the art
Various modifications and improvement that case is made, all should fall in the protection domain of claims of the present invention determination.