CN212804468U - Novel proportional valve - Google Patents
Novel proportional valve Download PDFInfo
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- CN212804468U CN212804468U CN202021390175.5U CN202021390175U CN212804468U CN 212804468 U CN212804468 U CN 212804468U CN 202021390175 U CN202021390175 U CN 202021390175U CN 212804468 U CN212804468 U CN 212804468U
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Abstract
The utility model relates to the technical field of valves, concretely relates to novel proportional valve, including a proportional valve body and a closing cap, one side of proportional valve body is equipped with the both sides through-hole, the both sides through-hole respectively with the inside chamber of admitting air of proportional valve body communicates with the chamber of giving vent to anger, the closing cap shutoff is in on the both sides through-hole, two cylindrical recesses have been seted up with the corresponding position of both sides through-hole to the closing cap inboard, just two cylindrical recesses communicate each other, the inside sleeve pipe of establishing in two bypass holes of inserting that is fixed with respectively of two cylindrical recesses, be formed with the clearance of "8" font between the cell wall of two sleeve pipes and two cylindrical recesses, the embedded rubber pad that is equipped with "8" font in the clearance, the opening has been seted up to the one side that two sleeve pipes are close to each other, the breach of two openings of intercommunication is seted. Through improving the closing cap structure of proportional valve, need not to use the bypass valve under the small fire state, practice thrift use cost, simple structure, convenient to use.
Description
Technical Field
The utility model relates to the technical field of valves, concretely relates to novel proportional valve.
Background
The air-fuel ratio valve is generally installed on a gas branch pipeline in front of a burner, receives an air pressure adjusting signal through a pressure guide pipe connected to an air pipeline and is used for adjusting gas flow in continuous control or pulse control. In the combustion control, generally, only a butterfly valve or an electromagnetic valve of an air pipeline is driven to change the combustion-supporting air quantity, and a proportional valve adjusts the flow of gas according to the change of the air pressure, so that the large/small fire control or continuous proportional adjustment of a burner is realized.
When the burner nozzle is operated on a small fire, the pressure of a combustion air pipe is generally very low, and the pressure from an air conduit is sometimes insufficient to jack the proportional valve, so that the burner nozzle is easy to extinguish the fire in the small fire state. For example, in the air-fuel proportional valve of German winter Dungs FRNG series, two side through holes are arranged on the right side of the proportional valve body, generally, the side through holes are blocked by a sealing cover, when the proportional valve is in a small fire running state, the sealing cover needs to be removed, bypass valves are arranged on the two side through holes, a small gas flow needed in the small fire state enters the downstream of the proportional valve through the bypass valves, and the gas flow circulating through the bypass valves is stable and cannot be influenced by a sealing disc and a spring of the proportional valve. However, the bypass valve is expensive, the use cost of the proportional valve is increased, the pipeline in the bypass valve is complicated, and the situation that small holes in the bypass valve are blocked easily occurs.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve the above-mentioned problem that exists, designed a novel proportional valve, improve through the closing cap structure of proportional valve, need not to use the bypass valve under the small fire state, practice thrift use cost, simple structure, convenient to use.
In order to realize the technical purpose, reach above-mentioned technological effect, the utility model discloses a realize through following technical scheme:
a novel proportional valve comprises
The proportional valve comprises a proportional valve body, wherein two side through holes are formed in one side of the proportional valve body and are respectively communicated with an air inlet cavity and an air outlet cavity in the proportional valve body, and threaded holes are formed in two sides of each side through hole;
the sealing cover is plugged on the through holes on the two sides, mounting holes are formed in the two sides of the sealing cover and correspond to the threaded holes, screws in threaded connection with the threaded holes are arranged in the mounting holes, two cylindrical grooves are formed in the inner side of the sealing cover and correspond to the through holes on the two sides and are communicated with each other, the diameter of each cylindrical groove is larger than the diameter of each through hole, sleeves inserted in the two through holes are fixed inside the two cylindrical grooves respectively, an 8-shaped gap is formed between the two sleeves and the groove walls of the two cylindrical grooves, an 8-shaped rubber pad is embedded in the gap, one side, close to each other, of each two sleeves is provided with a notch, the middle of each rubber pad is provided with a notch communicated with the two notches, and the through holes on the two sleeves are communicated with the notches on the rubber pad.
Further, the cover is an aluminum plate.
The utility model has the advantages that:
this proportional valve improves through the closing cap structure to the shutoff both sides opening for the required little burst gas of little fiery state passes through the opening on the inboard two sleeves of closing cap and the breach on the rubber pad and gets into proportional valve low reaches with fixed flow, has guaranteed the stability of little fiery burning, need not to use the bypass valve under little fiery state, practice thrift use cost, simplify equipment structure, high durability and convenient use, avoid using the bypass valve to appear the stifled dead condition of the inside aperture of bypass valve, make little fiery gas flow more stable.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic side view of the proportional valve of the present invention;
FIG. 2 is a schematic structural view of the proportional valve with the sealing cover removed;
FIG. 3 is a schematic view of the inner side of the closure of the present invention before the closure is modified;
FIG. 4 is a schematic view of the inner side structure of the sealing cover of the present invention;
FIG. 5 is a schematic structural view of the inner side of the sealing cover with the rubber pad removed;
fig. 6 is a schematic structural view of the rubber pad of the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1-proportional valve body, 11-bypass port, 12-threaded hole, 2-sealing cover, 21-cylindrical groove, 211-sleeve, 2111-notch, 22-mounting hole, 3-rubber pad, 31-notch and 4-screw.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1-2, a novel proportional valve comprises a proportional valve body 1 and a sealing cover 2, wherein two side through holes 11 are formed in one side of the proportional valve body 1, the sealing cover 2 is plugged on the two side through holes 11, the two side through holes 11 are respectively communicated with an air inlet cavity and an air outlet cavity inside the proportional valve body 1, and threaded holes 12 are formed in two sides of each side through hole 11.
Referring to fig. 3, two mounting holes 22 are formed at positions corresponding to the threaded holes 12 on both sides of the sealing cover 2, screws 4 screwed with the threaded holes 12 are arranged in the mounting holes 22, two cylindrical grooves 21 are formed at positions corresponding to the through holes 11 on both sides inside the sealing cover 2, the two cylindrical grooves 21 are communicated with each other, the diameter of each cylindrical groove 21 is larger than the aperture of each bypass hole 11, sleeve pipes 211 inserted in the two bypass holes 11 are respectively fixed inside the two cylindrical grooves 21, an 8-shaped gap is formed between each sleeve pipe 211 and the groove wall of each cylindrical groove 21, an 8-shaped rubber pad 3 is embedded in the gap, as shown in fig. 4-6, a notch 2111 is formed in one side, close to each other, of each sleeve pipe 211, a notch 31 communicated with the two notches 2111 is formed in the middle of each rubber pad 3, and the two bypass holes 11 are communicated with the notches 31 in the rubber pads 3 through the notches 2111 in the two sleeve pipes 211. Wherein the closing cap 2 adopts aluminum plate, and aluminum plate corrosion resistance is good, prolongs the life of closing cap 2.
When the proportional valve is used, the bypass valve does not need to be additionally arranged on the sealing cover 2 on the bypass hole 11 in order to stably control the small-fire combustion of the burner, the use is convenient, and the use cost is saved. Through improving 2 structures of closing cap for the required little burst gas of little fiery state gets into proportional valve low reaches through opening 2111 on two inboard sleeve pipes 211 of closing cap 2 and breach 31 on the rubber pad 3, has guaranteed the stability of little fiery burning, thereby can the stable control nozzle combustion temperature, simple structure avoids using the bypass valve to appear the stifled dead condition of bypass valve inside aperture, makes little fiery gas flow more stable.
The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.
Of course, the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art should be able to make changes, alterations, additions or substitutions within the scope of the present invention.
Claims (2)
1. A novel proportional valve is characterized in that: comprises that
The proportional valve comprises a proportional valve body, wherein two side through holes are formed in one side of the proportional valve body and are respectively communicated with an air inlet cavity and an air outlet cavity in the proportional valve body, and threaded holes are formed in two sides of each side through hole;
the sealing cover is plugged on the through holes on the two sides, mounting holes are formed in the two sides of the sealing cover and correspond to the threaded holes, screws in threaded connection with the threaded holes are arranged in the mounting holes, two cylindrical grooves are formed in the inner side of the sealing cover and correspond to the through holes on the two sides and are communicated with each other, the diameter of each cylindrical groove is larger than the diameter of each through hole, sleeves inserted in the two through holes are fixed inside the two cylindrical grooves respectively, an 8-shaped gap is formed between the two sleeves and the groove walls of the two cylindrical grooves, an 8-shaped rubber pad is embedded in the gap, one side, close to each other, of each two sleeves is provided with a notch, the middle of each rubber pad is provided with a notch communicated with the two notches, and the through holes on the two sleeves are communicated with the notches on the rubber pad.
2. The novel proportioning valve of claim 1 wherein: the cover is an aluminum plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021390175.5U CN212804468U (en) | 2020-07-15 | 2020-07-15 | Novel proportional valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021390175.5U CN212804468U (en) | 2020-07-15 | 2020-07-15 | Novel proportional valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212804468U true CN212804468U (en) | 2021-03-26 |
Family
ID=75102389
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021390175.5U Active CN212804468U (en) | 2020-07-15 | 2020-07-15 | Novel proportional valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212804468U (en) |
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2020
- 2020-07-15 CN CN202021390175.5U patent/CN212804468U/en active Active
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