CN209026266U - Fire resisting damper - Google Patents
Fire resisting damper Download PDFInfo
- Publication number
- CN209026266U CN209026266U CN201821948054.0U CN201821948054U CN209026266U CN 209026266 U CN209026266 U CN 209026266U CN 201821948054 U CN201821948054 U CN 201821948054U CN 209026266 U CN209026266 U CN 209026266U
- Authority
- CN
- China
- Prior art keywords
- spool
- valve body
- valve
- outlet end
- valve chamber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a kind of fire resisting dampers, comprising: valve body, with inlet end and an outlet end；Spool is set in the valve body, and the valve body has close to the valve body outlet end so that the input end of first position and the close valve body that the input end is connected to the outlet end is so that the second position that the input end and the outlet end are truncated；Back-stop mechanism is used to limit the spool from the second position and switches to first position；Wherein: when the fuel gas buring in the first valve chamber between the outlet end and the spool, the air pressure increased brought by fuel gas buring drives the spool to be moved to the second position from first position.The pressure that the fire resisting damper of the utility model is increased sharply using fuel gas buring pushes spool to block import and so that spool is maintained at sealed condition using back-stop mechanism, and then fire behavior is effectively prevent to introduce in fuel gas conduit, to realize fireproofing function.
Description
Technical field
The utility model relates to a kind of fire resisting dampers.
Background technique
Fire resisting damper used in gas furnace in the prior art is using high temperature brought by fuel gas buring come the stopper section that fuses
Part makes valve core reset to the block-up position of closure fuel gas inlet, and then prevents air from entering in fuel gas conduit, to reach fire prevention effect
Fruit.
Above-mentioned fire resisting damper in the prior art has the following deficiencies:
Fused backstopping assembly and unreliable using high temperature, that is to say, that sometimes, burning be formed by high temperature can not and
When fuse backstopping assembly, or the risen temperature of burning is not enough to the backstopping assembly that fuses, so that spool can not be timely
It resets or block-up position can not be reset to, and then do not have fireproof effect.
Utility model content
For the above-mentioned technical problems in the prior art, the embodiments of the present invention provide a kind of fire resisting damper.
In order to solve the above technical problems, the embodiments of the present invention the technical solution adopted is that:
A kind of fire resisting damper, comprising:
Valve body, with inlet end and an outlet end；
Spool is set in the valve body, and the valve body has close to the valve body outlet end so that the input end
The input end of the first position and the close valve body that are connected to the outlet end is so that the input end and the outlet end
The second position of truncation；
Back-stop mechanism is used to limit the spool from the second position and switches to first position；Wherein:
When the fuel gas buring in the first valve chamber between the outlet end and the spool, increase brought by fuel gas buring
Big air pressure drives the spool to be moved to the second position from first position.
Preferably, the fire resisting damper further includes valve rod, and the valve rod is fixed in the valve body, and same with the spool
Axis；Wherein:
The second valve chamber is formed between the input end and the spool；
Annular groove is formed on the valve rod, when the spool is in the first position, the spool and the annular
Groove surrounds the annular deflector hole for entering first valve chamber for the gas of second valve chamber；And when the spool is in second
When position, the spool and annular groove dislocation are so that first valve chamber and second valve chamber are truncated.
Preferably, spring is provided in second valve chamber, the spring is used to push against the valve to first valve chamber
Core；
Be formed with step surface in the valve body, the spring push against the spool backstop it is corresponding in the step surface described in
The first position of spool.
Preferably, the mounting hole radially penetrated through is offered on the valve body；
The back-stop mechanism includes:
Check block, head can stretch out the inner wall of the valve body；
Pressure spring is used to push against the check block so that the inner wall of the valve body is stretched out on the head of the check block；
Adjusting nut is used to adjust the decrement of the pressure spring；Wherein:
The side of head towards the outlet end of the check block is formed with inclined-plane, and towards the one of the input end
Side is formed with the flat face of the axis perpendicular to spool；
During the spool slides into the second position from first position, the spool is by contacting the inclined-plane
Force the check block to bounce back, and when spool slip over the check block and arrive the second position when, the pressure spring makes described
The head of check block stretches out the inner wall of the valve body and makes spool described in flat face backstop.
Preferably, one end that the valve rod is located at the outlet end limits the aperture of outlet with the outlet end jointly.
Compared with prior art, the beneficial effect of the fire resisting damper of the utility model is: the fire resisting damper of the utility model utilizes
The pressure that fuel gas buring is increased sharply pushes spool to block import and so that spool is maintained at sealed condition, Jin Eryou using back-stop mechanism
Effect prevents fire behavior from introducing in fuel gas conduit, to realize fireproofing function.
Detailed description of the invention
(spool is in first to the schematic diagram of internal structure for the fire resisting damper that Fig. 1 provides for the embodiments of the present invention
It sets).
(spool is in from first the schematic diagram of internal structure for the fire resisting damper that Fig. 2 provides for the embodiments of the present invention
Set the state for switching to the second position).
(spool is in second to the schematic diagram of internal structure for the fire resisting damper that Fig. 3 provides for the embodiments of the present invention
It sets).
In figure:
10- valve body；The first valve chamber of 11-；The second valve chamber of 12-；The outlet 13-；14- step surface；20- spool；30- valve rod；31-
Annular groove；40- valve deck；41- import；42- junction block；50- spring；60- back-stop mechanism；61- check block；The inclined-plane 611-；
612- flat face；62- pressure spring；63- adjusting nut.
Specific embodiment
It is with reference to the accompanying drawing and specific real to make those skilled in the art better understand the technical solution of the utility model
Mode is applied to elaborate to the utility model.
As shown in Figure 1 to Figure 3, the embodiments of the present invention disclose a kind of fire resisting damper, can be applied to gas-cooker, but not
It is limited to be applied to this.The fire resisting damper includes: valve body 10, valve deck 40, spool 20, valve rod 30, back-stop mechanism 60 and spring 50.
Both ends in 10 axial direction of valve body are respectively inlet end and an outlet end, and outlet end is closed and opens up the outlet of a taper
13, valve deck 40 is buckled in input end and offers import 41 and be formed with the junction block 42 connecting with fuel gas conduit.Spool 20 is set
It is placed in valve body 10, and the inside of valve body 10 is divided into and is located at the first valve chamber 11 of 13 sides of outlet and positioned at 41 side of import
Second valve chamber 12.The tailing screw flight of valve rod 30 is connected on valve deck 40, and valve rod 30 passes through spool 20, the head of valve rod 30 formed with
The taper of 13 cooperation of outlet, and then the aperture for limiting outlet 13 is stretched in outlet 13, and big to adjust aperture by rotating
It is small.
Spool 20 has in the axial direction there are two position, it may be assumed that first position and the second position；As shown in Figure 1, spool 20 is
When one position, spool 20 is connected to the first valve chamber 11 with the second valve chamber 12, so that the combustion gas in fuel gas conduit passes through import
41, the first valve chamber 11 and the second valve chamber 12, and sprayed from outlet 13, and then realize the normal combustion of combustion gas, as shown in figure 3, valve
For core 20 at the second position, the second valve chamber 12 and the first valve chamber 11 is truncated in spool 20, this to enter in the second valve chamber 12
Combustion gas will not enter the first valve chamber 11, correspondingly, when there is combustion position in the second valve chamber 12 (Abnormal combustion state),
The combustion gas of burning will not enter the second valve chamber 12, and then the combustion gas of burning can effectively be prevented to enter combustion gas via the second valve chamber 12
Guan Zhong, and then realize fire prevention.
Spool 20 realizes the connection of the first valve chamber 11 and the second valve chamber 12 in first position and realizes first in the second position
The truncation of valve chamber 11 and the second valve chamber 12 can be used flowering structure such as and realize:
Annular groove 31 is formed on valve rod 30, when spool 20 is in first position, spool 20 is enclosed with annular groove 31
Enter the annular deflector hole of the first valve chamber 11 at the gas for the second valve chamber 12；And when spool 20 is in the second position, spool
20 misplace with annular groove 31 so that the first valve chamber 11 and the second valve chamber 12 are truncated.
As shown in Figure 1, spring 50 is set in the second valve chamber 12 to push against spool 20 to 11 direction of the first valve chamber, so that valve
Core 20 can be formed on 14 backstop of step surface on 10 inner wall of valve body, at this point, spool 20 is in first position.
Back-stop mechanism 60 includes pressure spring 62, check block 61 and adjusting nut 63.Check block 61, which is set to, to be provided with
In mounting hole on valve body 10,61 head of check block can stretch out the inner wall of valve body 10；Pressure spring 62 is for pushing against check block
61 so that the inner wall of valve body 10 is stretched out on the head of check block 61；Adjusting nut 63 is used to adjust the decrement of pressure spring 62；Wherein:
The side of the head of check block 61 towards outlet end is formed with inclined-plane 611, and towards the side of input end be formed with perpendicular to
The flat face 612 of the axis of spool 20；During spool 20 slides into the second position from first position, spool 20 is by connecing
Touching inclined-plane 611 and force check block 61 bounce back, and when spool 20 slip over check block 61 and arrive the second position when, pressure spring 62 makes
The head for obtaining check block 61 stretches out the inner wall of valve body 10 and makes 612 backstop spool 20 of flat face.
The course of work for introducing above-mentioned fire resisting damper is described below:
When the burning of combustion gas is normal, as shown in Figure 1, it may be assumed that air does not enter the first valve chamber 11 and makes combustion gas not
In one valve chamber 11 when burning, under the action of spring 50, spool 20 is located at first position, at this point, the combustion gas in fuel gas conduit enters
Import 41, the second valve chamber 12, annular deflector hole, the first valve chamber 11, and sprayed by outlet 13 to carry out normal combustion.
And the pressure when air enters the second valve chamber 12 and causes the fuel gas buring in the second valve chamber 12, in the second valve chamber 12
Power abruptly increase, under pressure, spool 20 is towards input end quick sliding, at this point, spool 20 is forced and contacting with inclined-plane 611
The head of check block 61 bounces back, and after spool 20 slips over check block 61, the head of check block 61 is stretched out again, so that flat
It faces 612 limitation spools 20 directly and returns cunning, at this point, spool 20 switches to the second position, spool 20 and annular groove 31 misplace, the second valve
Chamber 12 is truncated with the first valve chamber 11 by spool 20, and then fire behavior is effectively prevent to spread in the second valve chamber 12 and fuel gas conduit.
Adjusting nut 63 can adjust the decrement of pressure spring 62, and then adjust the sensitivity of the retraction of check block 61.Also,
Spool 20 can be made to be reset to first position by dismantling adjusting nut 63 and fire resisting damper is reused.
Above embodiments are only the exemplary embodiment of the utility model, are not used in limitation the utility model, this is practical new
The protection scope of type is defined by the claims.Those skilled in the art can be in the essence and protection scope of the utility model
It is interior, various modifications or equivalent replacements are made to the utility model, this modification or equivalent replacement also should be regarded as falling in originally practical new
In the protection scope of type.
Claims (5)
1. a kind of fire resisting damper characterized by comprising
Valve body, with inlet end and an outlet end；
Spool is set in the valve body, and the valve body has close to the valve body outlet end so that the input end and institute
The first position of outlet end connection and the input end of the close valve body are stated so that the input end and the outlet end are truncated
The second position；
Back-stop mechanism is used to limit the spool from the second position and switches to first position；Wherein:
When the fuel gas buring in the first valve chamber between the outlet end and the spool, increase brought by fuel gas buring
Air pressure drives the spool to be moved to the second position from first position.
2. fire resisting damper according to claim 1, which is characterized in that the fire resisting damper further includes valve rod, and the valve rod is fixed
In in the valve body, and it is coaxial with the spool；Wherein:
The second valve chamber is formed between the input end and the spool；
Annular groove is formed on the valve rod, when the spool is in the first position, the spool and the annular groove
Surround the annular deflector hole for entering first valve chamber for the gas of second valve chamber；And when the spool is in the second position
When, the spool and annular groove dislocation are so that first valve chamber and second valve chamber are truncated.
3. fire resisting damper according to claim 2, which is characterized in that be provided with spring, the spring in second valve chamber
For pushing against the spool to first valve chamber；
Step surface is formed in the valve body, the spring pushes against the spool backstop in the corresponding spool of the step surface
First position.
4. fire resisting damper according to claim 3, which is characterized in that offer the mounting hole radially penetrated through on the valve body；
The back-stop mechanism includes:
Check block, head can stretch out the inner wall of the valve body；
Pressure spring is used to push against the check block so that the inner wall of the valve body is stretched out on the head of the check block；
Adjusting nut is used to adjust the decrement of the pressure spring；Wherein:
The side of head towards the outlet end of the check block is formed with inclined-plane, and towards the side shape of the input end
At the flat face for having the axis perpendicular to spool；
During the spool slides into the second position from first position, the spool is forced by contacting the inclined-plane
Check block retraction, and when spool slip over the check block and arrive the second position when, the pressure spring makes the check
The head of block stretches out the inner wall of the valve body and makes spool described in flat face backstop.
5. fire resisting damper according to claim 2, which is characterized in that the valve rod be located at one end of the outlet end with it is described
Outlet end limits the aperture of outlet jointly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821948054.0U CN209026266U (en) | 2018-11-23 | 2018-11-23 | Fire resisting damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821948054.0U CN209026266U (en) | 2018-11-23 | 2018-11-23 | Fire resisting damper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209026266U true CN209026266U (en) | 2019-06-25 |
Family
ID=66910740
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821948054.0U Expired - Fee Related CN209026266U (en) | 2018-11-23 | 2018-11-23 | Fire resisting damper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209026266U (en) |
-
2018
- 2018-11-23 CN CN201821948054.0U patent/CN209026266U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190625 Termination date: 20201123 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |