CN208823830U - Using diaphragm substrate as the steam supply valve of positive pressure lever in a kind of novel medium voltage by-pass structure - Google Patents
Using diaphragm substrate as the steam supply valve of positive pressure lever in a kind of novel medium voltage by-pass structure Download PDFInfo
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- CN208823830U CN208823830U CN201821414562.0U CN201821414562U CN208823830U CN 208823830 U CN208823830 U CN 208823830U CN 201821414562 U CN201821414562 U CN 201821414562U CN 208823830 U CN208823830 U CN 208823830U
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Abstract
The utility model belongs to positive-pressure air respirator steam supply valve technical field, specifically discloses in a kind of novel medium voltage by-pass structure using diaphragm substrate as the steam supply valve of positive pressure lever；Solve the problems, such as that existing diaphragm substrate exists as the positive-pressure air respirator steam supply valve of positive pressure lever construction type, i.e. existing middle pressure by-pass structure and middle pressure pipe are in the same side, and the main part of steam supply valve is smaller, when steam supply valve couples with full facepiece mask intermediary interface, seem that side is overweight, there is problem that is centainly unbalance, and operating also not convenient enough；The utility model designs middle pressure by-pass structure in the other side of middle pressure pipe, the pressure pipe i.e. in the side setting of gas supply valve body, by-pass structure is pressed in the setting of the other side, balance steam supply valve more on integral layout, it is more advantageous to and couples with the interface among full facepiece mask, be conducive to the accessible operation of middle pressure bypass mechanism.
Description
Technical field
Using diaphragm substrate as the steam supply valve of positive pressure lever in a kind of novel medium voltage by-pass structure of the utility model, and in particular to
It is a kind of using diaphragm substrate as the steam supply valve of positive pressure lever, belong to positive-pressure type firefighting air respirator, self-supporting open type compressed air
Respirator, long-pipe air respirator, fecder system network Gas feeding air respiratorresuscitator, commander's respirator, the escape of energy control for need formula are exhaled
The technical fields such as haustorium.
Background technique
Steam supply valve, which is realized, breathes the air capacity needed by user, the function of supplying on demand to user automatically, wherein with
Diaphragm substrate is that the steam supply valve of positive pressure lever construction this kind has feature small in size, light-weight, but wherein presses bypass mechanism
Be respectively positioned on side with middle pressure pipe, be suitble to couple with full facepiece mask left side interface and be used cooperatively, if be used for it is indirect in full facepiece mask
Mouthful connection is used cooperatively, then seems that side is overweight, has certain unbalance, and the operation of middle pressure bypass mechanism is also not convenient enough.
Utility model content
The utility model overcomes the shortcomings of the prior art, provides in a kind of novel medium voltage by-pass structure with diaphragm
Substrate is the steam supply valve of positive pressure lever, convenient for coupling with the interface among full facepiece mask, and makes the operation of middle pressure bypass component without barrier
Hinder.
In order to solve the above-mentioned technical problem, a kind of the technical solution adopted in the utility model are as follows: novel medium voltage by-pass structure
In using diaphragm substrate as the steam supply valve of positive pressure lever, including middle pressure pipe, steam supply valve main casing, steam supply valve rear cover, reversed air pressure bullet
Property seal, diaphragm, positive pressing spring, middle means of press seals core and middle pressure bypass component, set on the downside of one end of the steam supply valve main casing
It is equipped with positive pressing spring and middle means of press seals core, diaphragm, the diaphragm are provided between the steam supply valve main casing and steam supply valve rear cover
Including diaphragm substrate, the diaphragm substrate covers after steam supply valve as positive pressure lever, fulcrum setting, the steam supply valve main casing
The side of body is provided with middle pressure pipe, and the other side of the steam supply valve main casing is provided with middle pressure bypass component, the reversed air pressure
Elastic sealed body is arranged on the end face for the inlet suction port that middle pressure pipe couples with steam supply valve main casing, and the reversed pneumatic elasticity
The centre of seal be provided with one can gas blowby aperture, medium pressure bypass component presses duct and steam supply valve for adjusting in first
On-off at the top of main casing between outlet duct, medium pressure bypass component includes bypassing rotation hand wheel and by-pass valve body, described
Steam supply valve main casing end is inserted into by-pass valve body one end, and the by-pass valve body other end is set with bypass rotation hand wheel.
The utility model has the beneficial effect that middle pressure bypass component is arranged the utility model compared with prior art
In the other side of middle pressure pipe, i.e., steam supply valve main casing side setting in pressure pipe, the other side setting in press bypass component, make to supply
Air valve more balances on integral layout, is more advantageous to and couples with the interface among full facepiece mask, is conducive to middle pressure bypass component
Accessible operation.
Detailed description of the invention
The utility model is described further with reference to the accompanying drawing.
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is existing structure schematic diagram.
In figure: 1 is middle pressure pipe, 2 be inlet suction port, 3 be steam supply valve main casing, 4 be steam supply valve rear cover, 5 be reversed air pressure
Elastic sealed body, 6 be diaphragm, 601 be diaphragm substrate, 7 be positive pressing spring, 8 be middle means of press seals core, 9 be middle pressure bypass component,
901 be bypass end face it is logical close O-ring, 902 be by-pass valve body, 903 be valve body O-ring seal, 904 be bolt, 905 be bypass rotation
Change hands wheel, 906 be bypass lock screw, 907 be anti-slip spring, 10 be gas outlet strainer, 11 be socket O-ring seal, 121 be
For bypass it is logical close O-ring seal, 122 be bypass rotation type change hands wheel, 13 be pressure duct in first, 14 be outlet duct,
15 be that pressure duct, 16 are to bypass pressure release duct in second.
Specific embodiment
The structure that Fig. 1 and Fig. 2 mainly supplies part is consistent, and gas supply principle is well-known, two differences
It is only that the difference of middle pressure bypass component structure, and its bypass gas supply principle is also different.
The utility model is illustrated combined with specific embodiments below.
Using diaphragm substrate as the steam supply valve of positive pressure lever in a kind of novel medium voltage by-pass structure, including middle pressure pipe 1, air inlet connecting
First 2, steam supply valve main casing 3, steam supply valve rear cover 4, reversed pneumatic elasticity seal 5, diaphragm 6, positive pressing spring 7 and middle means of press seals core
8 and middle pressure bypass component 9, pressure pipe 1 in one end connection of the inlet suction port 2, the other end of the inlet suction port 2 is inserted into confession
In air valve main casing 3, the end of the inlet suction port 2 in the steam supply valve main casing 3 is provided with reversed pneumatic elasticity sealing
Body 5, the reversed pneumatic elasticity seal 5 will press 3 top of duct 13 and steam supply valve main casing in first in inlet suction port 2
Outlet duct 14 separates, and is provided with positive pressing spring 7 and middle means of press seals core 8, the confession on the downside of one end of the steam supply valve main casing 3
The setting of air valve rear cover 4 is provided with diaphragm between 3 bottom of steam supply valve main casing, the steam supply valve main casing 3 and steam supply valve rear cover 4
6, the diaphragm 6 includes diaphragm substrate 601, and the diaphragm substrate 601 is used as positive pressure lever, and fulcrum is arranged in steam supply valve rear cover
On 4, the end of the steam supply valve main casing 3 is provided with middle pressure bypass component 9, and medium pressure bypass component 9 is for adjusting first
On-off between middle pressure duct 13 and 3 top outlet duct 14 of steam supply valve main casing, as shown in Figure 1, middle pressure bypass component 9 includes
Bypass end face is logical to close O-ring 901, by-pass valve body 902, valve body O-ring seal 903, bolt 904, bypass rotation hand wheel 905, side
Logical lock screw 906 and anti-slip spring 907, bypass end face is logical to be closed O-ring 901 and is installed on steam supply valve main casing 3, by-pass valve body
It is cased with valve body O-ring seal 903 on 902, and is coupled by bolt 904 with steam supply valve main casing 3, bypasses in rotation hand wheel 905
It sets anti-slip spring 907 and is tightly coupled by bypass lock screw 906 with by-pass valve body lock 902, wherein on a left side for by-pass valve body 902
An air slot is provided with above side end face, when steam supply valve is in close state, when by rotating bypass rotation hand wheel 905, hand
Wheel drives by-pass valve body 902 to rotate, when the air slot of side on 902 end face of by-pass valve body is let out pressure duct 15 in second with bypass
When pressure duct 16 is connected, pressure 15 air pressure of duct decline in second reduces the air pressure on reversed 5 right side of pneumatic elasticity seal,
And the air pressure in reversed 5 left side of pneumatic elasticity seal is basically unchanged, and makes the reversed gas for being pressed in inlet suction port end face originally and sealing
Compression elasticity seal 5 moves right, and then opens outlet duct 14 at this time, presses the air in duct 13 to pass through reversed air pressure in first
Gap between 2 end face of elastic sealed body 5 and inlet suction port enters the hole of 2 end face of inlet suction port periphery, and then passes through venthole
Road 14 is supplied to full facepiece mask；Rotation hand wheel 905 is bypassed by rotation, drives by-pass valve body 902 to rotate, when 902 end of by-pass valve body
When the air slot of side cannot be connected pressure duct 15 in second with bypass pressure release duct 13 on face, then steam supply valve is still maintained
Original closed state.
The bypass gas supply principle of middle pressure bypass component shown in Fig. 2 is then simple, and the feelings closed are in steam supply valve
Under condition, when bypassing rotary-type handwheel 122 by rotation, handwheel drives inlet suction port 2 to rotate, when one on 2 periphery of inlet suction port
When the gas port of side is connected with the bypass pressure release duct on main casing, at this time due to be provided at gas port bypass it is logical close it is O-shaped
Sealing ring 121, middle pressure air only enter gas outlet by the bypass pressure release duct on main casing, supply to full facepiece mask；And when logical
It crosses rotation and bypasses rotary-type handwheel 122, handwheel drives inlet suction port 2 to rotate, when the gas port of side on 2 periphery of inlet suction port
When being not attached to logical with the bypass pressure release duct on main casing, then the closed state that still maintains steam supply valve original.
By the improvement of Fig. 1 embodiment, balance the utility model steam supply valve more on integral layout, be more advantageous to
Interface connection among full facepiece mask is conducive to the accessible operation of middle pressure bypass mechanism.
The embodiments of the utility model have been described in detail above with reference to the accompanying drawings, but the utility model is not limited to
Embodiment is stated, within the knowledge of a person skilled in the art, the utility model aims can also not departed from
Under the premise of various changes can be made.
Claims (1)
1. using diaphragm substrate as the steam supply valve of positive pressure lever in a kind of novel medium voltage by-pass structure, including middle pressure pipe (1), steam supply valve
Main casing (3), steam supply valve rear cover (4), reversed pneumatic elasticity seal (5), diaphragm (6), positive pressing spring (7), middle means of press seals core
(8) and middle pressure bypass component (9), one end downside of the steam supply valve main casing (3) are provided with positive pressing spring (7) and middle means of press seals
Core (8) is provided with diaphragm (6) between the steam supply valve main casing (3) and steam supply valve rear cover (4), and the diaphragm (6) includes diaphragm
Substrate (601), the diaphragm substrate (601) are used as positive pressure lever, and fulcrum is arranged on steam supply valve rear cover (4), and feature exists
In the side of the steam supply valve main casing (3) is provided with middle pressure pipe (1), and the other side of the steam supply valve main casing (3) is provided with
Middle pressure bypass component (9), reversed pneumatic elasticity seal (5) setting couple in middle pressure pipe (1) with steam supply valve main casing (3)
Inlet suction port (2) end face on, and the centre of the reversed pneumatic elasticity seal (5) be provided with one can gas blowby aperture,
Medium pressure bypass component (9) presses outlet duct (14) at the top of duct (13) and steam supply valve main casing (3) for adjusting in first
Between on-off, medium pressure bypass component (9) includes bypass rotation hand wheel (905) and by-pass valve body (902), the by-passing valve
Steam supply valve main casing (3) end is inserted into body (902) one end, and by-pass valve body (902) other end is set with bypass rotation hand wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821414562.0U CN208823830U (en) | 2018-08-30 | 2018-08-30 | Using diaphragm substrate as the steam supply valve of positive pressure lever in a kind of novel medium voltage by-pass structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821414562.0U CN208823830U (en) | 2018-08-30 | 2018-08-30 | Using diaphragm substrate as the steam supply valve of positive pressure lever in a kind of novel medium voltage by-pass structure |
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| Publication Number | Publication Date |
|---|---|
| CN208823830U true CN208823830U (en) | 2019-05-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821414562.0U Active CN208823830U (en) | 2018-08-30 | 2018-08-30 | Using diaphragm substrate as the steam supply valve of positive pressure lever in a kind of novel medium voltage by-pass structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112370674A (en) * | 2020-11-05 | 2021-02-19 | 周圆鹤 | Positive pressure type air respirator for fire fighting |
-
2018
- 2018-08-30 CN CN201821414562.0U patent/CN208823830U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112370674A (en) * | 2020-11-05 | 2021-02-19 | 周圆鹤 | Positive pressure type air respirator for fire fighting |
| CN112370674B (en) * | 2020-11-05 | 2022-01-25 | 郝志勇 | Positive pressure type air respirator for fire fighting |
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