CN201475415U - Air and gas proportion regulating valve - Google Patents
Air and gas proportion regulating valve Download PDFInfo
- Publication number
- CN201475415U CN201475415U CN2009201872331U CN200920187233U CN201475415U CN 201475415 U CN201475415 U CN 201475415U CN 2009201872331 U CN2009201872331 U CN 2009201872331U CN 200920187233 U CN200920187233 U CN 200920187233U CN 201475415 U CN201475415 U CN 201475415U
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- China
- Prior art keywords
- valve
- connecting rod
- induction cavity
- diaphragm
- air
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- Expired - Fee Related
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- Feeding And Controlling Fuel (AREA)
- Fluidized-Bed Combustion And Resonant Combustion (AREA)
Abstract
The utility model discloses an air and gas proportion regulating valve. A valve body base connected on a gas pipeline is provided with two cavities which are an upper cavity connected with a gas inlet and a lower cavity connected with a gas outlet, a valve block is arranged between the upper and the lower cavities to facilitate gas-pass switching on and off, the middle portion of a valve body is provided with a sealed induction cavity, the middle portion of the induction cavity is provided with an impulse membrane which divides the induction cavity into an upper induction cavity and a lower induction cavity which are mutually sealed well, a sealing membrane is arranged between the lower induction cavity and the upper cavity of the valve body base, a connection rod is provided and is vertically and fixedly connected on the valve block, the connection rod vertically passes through and is fixedly connected with the sealing membrane and the impulse membrane, the top end of the connection rod is fixedly connected with a tension spring, and the top portion of the tension spring is fixedly connected with a screw rod which is screw-connected with a valve body shell body.
Description
Technical field:
The utility model relates to a kind of mechanical type ratio adjusting valve, particularly a kind of air, combustion gas ratio adjusting valve that is used for industrial combustion equipment and stove heating system.
Background technique:
For existing industrial combustion system, adopting two butterfly valves that flow proportional is implemented in air/combustion gas mostly regulates, as shown in Figure 1, for this combustion system, butterfly valve 3 on the gas pipeline 2, the butterfly valve on the air conduit 3 need manual tune control respectively, cumbersome during use, air, gas flow are regulated and can not be carried out synchronously.Governing response is slow, can not reach the proportional adjustment of air/combustion gas quickly and effectively, and inefficiency is inaccurate because of the manual tune precision simultaneously, can not proportionally regulate, and causes the partial combustion of fuel to cause energy waste.Again because of degree of regulation is low, can not fine control combustion atmosphere during burning, in requiring the furnace chamber of oxygen debt atmosphere, be easy to generate substandard products.Can not prevent tempering effectively during work, cause certain potential safety hazard.For overcoming these defectives, enhance productivity, energy-conserving and environment-protective, eliminate safe hidden trouble, the air in the industrial combustion system equipment/combustion gas ratio adjusting valve is developed.
The model utility content:
For overcoming the defective of prior art, the purpose of this utility model is to provide a kind of air, combustion gas ratio adjusting valve, and it can realize the air/combustion gas proportional control of high efficiency, high precision effectively.
The utility model technical solution problem adopts following technological scheme:
Air, combustion gas ratio adjusting valve, valve body are " scholar " font structure on the whole;
The valve base that is connected on the gas pipeline has two chambers, promptly is communicated with the upper chamber of fuel gas inlet, the lower chambers of connection gas outlet, has the open and close that a valve block realizes that combustion gas is passed through between the upper and lower chamber;
Valve body middle part has airtight induction cavity, and the induction cavity middle part has a pulse diaphragm and it is divided into is spaced from each other and the last induction cavity and the following induction cavity of good seal, is provided with seal membrane between the upper chamber of following induction cavity and described valve base;
One connecting rod is set, and described connecting rod vertically is fixed on the described valve block, and connecting rod vertically passes described seal membrane, the pulse diaphragm also is connected with seal membrane, pulse diaphragm respectively;
The top of described connecting rod is fixed with an extension spring, and the top of extension spring is fixed with the screw rod that is threaded with the valve body housing.
Structure characteristic of the present utility model also is:
Described valve block is a spool aluminium dish, and spool aluminium dish connects firmly with described connecting rod is vertical with its central point, is installed with valve core seal ring in the periphery of spool aluminium dish; Described upper chamber is communicated with by a through hole with described lower chambers, and when described connecting rod drove described valve block and moves upward, valve block sealed described through hole, and the shell body wall of locating around the through hole that contacts with described seal ring is that domatic structure is to improve sealability.
The top of described pulse diaphragm and below all have diaphragm support, and described pulse diaphragm is held between two diaphragm supports, and described connecting rod passes the center hole of described pulse diaphragm and diaphragm support, fixes with nut between connecting rod and pulse diaphragm and the diaphragm support.
Compared with the prior art, the beneficial effects of the utility model are embodied in:
The characteristics of air, combustion gas ratio adjusting valve are to have a big pulse diaphragm, little seal membrane is connected and will be sealed between the upper chamber of base and the induction cavity by soft rubber, accurate pulse diaphragm has guaranteed combustion-supporting air and the proportional adjusting of combustion gas, both can energy-conservation loss, can adjust the combustion atmosphere in the burner hearth again.Even it is flame-out that accurate flow control guarantees that under the situation of little fire burner is difficult for.Powerful bearing capacity can be used works fine under 50Kpa pressure, has improved using scope greatly.
When producing tempering phenomenon, the pressure of the pressure on the volumetric expansion of pipeline internal combustion makes modulating valve outlet end gas pipeline on the modulating valve entry end gas pipeline, pressure difference forces the up throttle down of valve block, can avoid the generation of security incident.
Air, combustion gas ratio adjusting valve provide accurate GAS control in combustion system.As long as minimum pressure difference exists, the operating pressure that this product produces all can satisfy the needed pressure signal of induction cavity on the top, and the degree of regulation ratio reaches 25: 1 (under air and the abundant combustion case of combustion gas, the ratio of peak rate of flow and minimum discharge).It also can be installed on the main combustible pipe road before both can being installed in burner, and the variation in pressure that is accompanied by combustion-supporting air is regulated the flow of combustion gas automatically, realized the proportional automatic adjusting of air and combustion gas.Mix burner tubes in both can being used for and also can be used for the premix burner pipeline.
Description of drawings:
Fig. 1 installs the structural drawing of butterfly valve respectively in the existing industrial combustion system on air conduit and the gas pipeline.
Fig. 2 is the structural representation of the utility model modulating valve.
Fig. 3 is in the schematic representation of open mode for the valve block of the utility model modulating valve.
Fig. 4 is the first mounting structure figure of the utility model modulating valve.
Fig. 5 is the second mounting structure figure of the utility model modulating valve.
Number in the figure: 1 modulating valve, 2 gas pipelines, 3 butterfly valves, 4 induction type proportioning mixers, 5 upper chamber, 6 lower chambers, 7 valve blocks, 71 spool aluminium dishes, 72 valve core seal rings, 8 induction cavities, induction cavity on 81,82 times induction cavities, 9 pulse diaphragms, 10 seal membranes, 11 diaphragm supports, 12 connecting rods, 13 extension springs, 14 screw rods, 15 nozzle mixers, 16 feedback holes, 17 feedback pipes.
Below pass through embodiment, and the utility model is described in further detail in conjunction with the accompanying drawings.
Embodiment, non-limiting examples is as described below:
Embodiment 1: in conjunction with Fig. 4, present embodiment modulating valve 1 is installed on the gas pipeline 2, and butterfly valve 3 is installed on the air conduit, when butterfly valve is opened, combustion-supporting air mixes in induction type proportioning mixer 4 with combustion gas, can produce negative pressure on the gas pipeline of modulating valve outlet end, impels modulating valve to open simultaneously.In conjunction with Fig. 2,3, the modulating valve valve base is connected on the gas pipeline 2, valve base has two chambers, promptly be communicated with the upper chamber 5 of fuel gas inlet, the lower chambers 6 of connection gas outlet, has a valve block 7 between the upper and lower chamber, the valve block body is a spool aluminium dish 71, periphery at spool aluminium dish is socketed with valve core seal ring 72, the shell body wall of locating around the through hole that contacts with valve core seal ring is domatic structure, valve closing when valve block is up, valve core seal ring 72 and structure are that domatic shell body wall closely contacts, and improve sealing effect greatly.
The valve body middle part has airtight induction cavity 8, induction cavity middle part has a pulse diaphragm 9 and induction cavity is divided into is spaced from each other and the last induction cavity 81 and the following induction cavity 82 of good seal, is provided with seal membrane 10 between the upper chamber 5 of following induction cavity 82 and described valve base; In specifically being provided with, the top of pulse diaphragm 9 and below all have diaphragm support 11, pulse diaphragm 9 is held between two diaphragm supports 11, and connecting rod 12 passes the center hole of pulse diaphragm and diaphragm support, links with fixing formation of nut between connecting rod 12 and pulse diaphragm 9 and the diaphragm support 10.
Connecting rod 12 vertically is fixed on the central point of spool aluminium dish 71, and connecting rod vertically passes seal membrane 10, pulse diaphragm 9 and be connected with seal membrane, pulse diaphragm respectively by nut and form interlock.The top of connecting rod is fixed with an extension spring 13, and the top of extension spring is fixed with screw rod 14, and screw rod 14 is threadedly connected on the valve housing also adjustable up and down.
In the use, when the butterfly valve 3 on the unlatching air conduit, combustion-supporting air enters in the induction type proportioning mixer 4, make the gas pipeline of modulating valve outlet end form negative pressure, also form negative pressure in the lower chambers 6 of valve base, it is descending that valve block 7 overcomes the pulling force of extension spring 13, make conducting between upper chamber 5 and the lower chambers 6, combustion gas mixes in the induction type proportioning mixer with air, in the specific operation, ratio needs according to air and combustion gas, adjust the pulling force of extension spring, pulling force is big more, and the descending stroke of valve block is short more, the flow of combustion gas is just more little, and the pulling force of extension spring can be adjusted by screw rod 14.At tension spring tension one regularly, the open degree of valve block changes automatically with the flow of air, realizes automatic proportional mixing of air and combustion gas.
In the use, when the butterfly valve 3 on the unlatching air conduit, combustion-supporting air enters in the nozzle mixer 15, air is entered in the last induction cavity 81 of modulating valve by feedback pipe 17 simultaneously, paired pulses diaphragm 9 produces downward pressure, and it is descending that pulse diaphragm drivening rod 12 overcomes the pulling force of extension spring 13, and pull bar 12 promotes the valve block 7 descending valves of opening simultaneously, conducting between the upper and lower chamber 5,6, combustion gas enter in the nozzle mixer 15 and mix with air is proportional.In the specific operation, according to the ratio needs of air and combustion gas, adjust the pulling force of extension spring, pulling force is big more, and the descending stroke of valve block is short more, and the flow of combustion gas is just more little, and the pulling force of extension spring can be adjusted by screw rod 14.At tension spring tension one regularly, the open degree of valve block changes automatically with the flow of air, realizes automatic proportional mixing of air and combustion gas.
Claims (4)
1. air, combustion gas ratio adjusting valve is characterized in that valve body is " scholar " font structure on the whole;
The valve base that is connected on the gas pipeline has two chambers, promptly is communicated with the upper chamber of fuel gas inlet, the lower chambers of connection gas outlet, has the open and close that a valve block realizes that combustion gas is passed through between the upper and lower chamber;
Valve body middle part has airtight induction cavity, and the induction cavity middle part has a pulse diaphragm and it is divided into is spaced from each other and the last induction cavity and the following induction cavity of good seal, is provided with seal membrane between the upper chamber of following induction cavity and described valve base;
One connecting rod is set, and described connecting rod vertically is fixed on the described valve block, and connecting rod vertically passes described seal membrane, the pulse diaphragm also is connected with seal membrane, pulse diaphragm respectively;
The top of described connecting rod is fixed with an extension spring, and the top of extension spring is fixed with the screw rod that is threaded with the valve body housing.
2. air, combustion gas ratio adjusting valve is characterized in that valve body is " scholar " font structure on the whole;
The valve base that is connected on the gas pipeline has two chambers, promptly is communicated with the upper chamber of fuel gas inlet, the lower chambers of connection gas outlet, has the open and close that a valve block realizes that combustion gas is passed through between the upper and lower chamber;
Valve body middle part has airtight induction cavity, and the induction cavity middle part has a pulse diaphragm and it is divided into is spaced from each other and the last induction cavity and the following induction cavity of good seal, is provided with seal membrane between the upper chamber of following induction cavity and described valve base; And the described induction cavity of going up is provided with the feedback hole that is used for the air conduit connection;
One connecting rod is set, and described connecting rod vertically is fixed on the described valve block, and connecting rod vertically passes described seal membrane, pulse diaphragm and with seal membrane, pulse diaphragm are connected respectively;
The top of described connecting rod is fixed with an extension spring, and the top of extension spring is fixed with the screw rod that is threaded with the valve body housing.
3. air according to claim 1 and 2, combustion gas ratio adjusting valve is characterized in that, described valve block is a spool aluminium dish, and spool aluminium dish connects firmly with described connecting rod is vertical with its central point, are installed with valve core seal ring in the periphery of spool aluminium dish; Described upper chamber is communicated with by a through hole with described lower chambers, and when described connecting rod drove described valve block and moves upward, valve block sealed described through hole, and the shell body wall of locating around the through hole that contacts with described seal ring is that domatic structure is to improve sealability.
4. air according to claim 1 and 2, combustion gas ratio adjusting valve, it is characterized in that, the top of described pulse diaphragm and below all have diaphragm support, described pulse diaphragm is held between two diaphragm supports, described connecting rod passes the center hole of described pulse diaphragm and diaphragm support, fixes with nut between connecting rod and pulse diaphragm and the diaphragm support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201872331U CN201475415U (en) | 2009-08-31 | 2009-08-31 | Air and gas proportion regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201872331U CN201475415U (en) | 2009-08-31 | 2009-08-31 | Air and gas proportion regulating valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201475415U true CN201475415U (en) | 2010-05-19 |
Family
ID=42411663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201872331U Expired - Fee Related CN201475415U (en) | 2009-08-31 | 2009-08-31 | Air and gas proportion regulating valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201475415U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105626942A (en) * | 2014-11-13 | 2016-06-01 | 河北春风供暖设备有限责任公司 | Multipurpose automatic air adjusting valve |
-
2009
- 2009-08-31 CN CN2009201872331U patent/CN201475415U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105626942A (en) * | 2014-11-13 | 2016-06-01 | 河北春风供暖设备有限责任公司 | Multipurpose automatic air adjusting valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100519 Termination date: 20160831 |