CN219474250U - Muffle furnace and combustion system thereof - Google Patents
Muffle furnace and combustion system thereof Download PDFInfo
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- CN219474250U CN219474250U CN202223603652.3U CN202223603652U CN219474250U CN 219474250 U CN219474250 U CN 219474250U CN 202223603652 U CN202223603652 U CN 202223603652U CN 219474250 U CN219474250 U CN 219474250U
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Abstract
The utility model provides a muffle furnace, which comprises a muffle furnace body and a muffle furnace valve group, wherein the muffle furnace body is composed of bricks, the muffle furnace valve group and spray guns in the muffle furnace body are sequentially connected with a manifold through metal hoses, a plurality of holes are formed in the front side and the rear side of the muffle furnace body, spray guns are arranged in each hole, and the muffle furnace valve group comprises a combustion-supporting fan, a combustion-supporting air regulating valve, a natural gas regulating valve and a Venturi mixer. The utility model also provides a muffle furnace combustion system. According to the utility model, by adopting the flameless combustion spray gun, the original straight won-ton type premixer is changed into the Venturi type premixer, so that the mixing uniformity and the combustion speed of the fuel gas are improved; the two manifolds are controlled by a group of high-precision sliding window type regulating valves and a heat value mass flowmeter, the number of the spray guns corresponding to a single manifold is reduced, meanwhile, a single metal hose in front of the spray gun is changed into a hard tube, alkali is less in pressure loss, the selection of the regulating valves and the flowmeter is optimized, and the accurate control of the low-flow natural gas is realized.
Description
Technical Field
The utility model relates to a muffle furnace technical field especially relates to a muffle furnace and combustion system thereof.
Background
The traditional muffle furnace temperature system of the low-boron silicon medicinal glass tube production line is low in requirement and is not suitable for the neutral boron silicon medicinal glass production line, and the main defects are that the temperature control precision is low, the muffle furnace size is large, the space temperature difference in the muffle furnace is large, the glass tube wall thickness and the diameter fluctuation are large, crystallization is easy, the energy consumption is high and the like.
Therefore, the utility model provides a muffle furnace to solve foretell technical problem.
Disclosure of Invention
The utility model provides a muffle furnace and combustion system thereof to the defect of above-mentioned prior art.
The utility model adopts the following technical scheme for solving the technical problems:
the utility model provides a muffle furnace, include the muffle furnace body of constituteing by the brick, the both sides of muffle furnace body have the opening, are located the left the opening is provided with silicic acid apron and rather than sealing connection, and the Danner machine jackshaft passes silicic acid apron is connected with the swivelling tube of rolling up molten glass, the swivelling tube is located in the inner chamber of muffle furnace body, be located the right the opening is connected with the forming chamber and rather than sealing connection, the lower extreme of muffle furnace body is provided with the support steel structure, still includes the muffle furnace valves, the muffle furnace valves with spray gun in the muffle furnace body links to each other through metal collapsible tube and manifold in proper order, the bilateral symmetry is provided with a plurality of holes around the muffle furnace body, every all install the spray gun in the hole, the muffle furnace valves is including venturi mixer.
Further, the muffle valve group further comprises a natural gas inlet, a plurality of natural gas outlets, two combustion-supporting fans and a main air pipe.
Further, the main air pipe is connected with two combustion-supporting fans.
Further, the natural gas inlet, the natural gas outlet, the combustion-supporting fan and the Venturi mixer are all connected through pipelines.
Further, a plurality of combustion-supporting air regulating valves and natural gas regulating valves are arranged on the pipeline.
Further, each natural gas outlet is connected with the spray gun through a metal hose and a manifold in sequence.
Further, the manifold is controlled by a set of high precision sliding window regulator valves and a heating value mass flow meter.
Further, the spray gun is a flameless combustion spray gun, and the number of the spray guns is at least 50.
Further, the volume of the muffle furnace body is 1.4-2.0m 3 。
The utility model also provides a muffle furnace combustion system, this muffle furnace combustion system include foretell muffle furnace.
The utility model adopts the above technical scheme, compare with prior art, have following technical advantage:
1. the utility model provides a muffle furnace, the space size of muffle furnace changes little, and whole space volume is by original 3.5m 3 Reduced to 1.4m 3 The transverse and longitudinal temperature difference caused by space heat convection is greatly reduced, and the investment cost of the muffle furnace is saved; meanwhile, after the size of the muffle furnace is changed to be small, the number of spray guns is correspondingly reduced, the original 80 branch is changed to 50 branch, and the total natural gas consumption of the muffle furnace is changed from the original 24Nm 3 The/h is reduced to 4.5Nm3/h, and the natural gas consumption of each zone is reduced from 8Nm 3 /h, reduced to 1.5Nm 3 /h。
2. The utility model changes the original direct mixing type premixing device into a Venturi type premixing device by adopting the flameless combustion spray gun, thereby improving the mixing uniformity and the combustion speed of the fuel gas; meanwhile, a pair of manifolds on two sides of the muffle furnace body are controlled through a group of high-precision sliding window type regulating valves and a heat value mass flowmeter, the number of spray guns corresponding to a single manifold is reduced, a single metal hose in front of the spray guns is changed into a hard tube, alkali is less in pressure loss, the type selection of the regulating valves and the flowmeter is optimized, and the accurate control of small-flow natural gas is realized.
3. By adopting the muffle furnace and the combustion system thereof provided by the utility model, the outer diameter qualification rate of the manufactured glass tube is increased to 85% from 20%.
Drawings
FIG. 1 is a schematic diagram of the structure of the muffle combustion system of the present utility model;
FIG. 2 is a schematic view of a prior art muffle body;
FIG. 3 is a schematic view of the structure of the muffle body in the present utility model;
FIG. 4 is a schematic diagram of a muffle valve block in the present utility model;
wherein the reference numerals are as follows:
a muffle furnace body 1; a silicic acid cover plate 11; a forming chamber 12; a support steel structure 13; an eyelet 14; a spray gun 141; a muffle valve block 2; a natural gas outlet 21; a combustion air regulating valve 22; a natural gas regulating valve 23; a natural gas inlet 24; a combustion fan 26; a venturi mixer 27; a metal hose 3; a manifold 31; a Danner machine large shaft 4; the tube 5 is rotated.
Detailed Description
The technical solutions of the present embodiments will be clearly and completely described below with reference to the drawings in the present embodiments, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, based on the embodiments herein, which would be within the purview of one of ordinary skill in the art without the creative effort, are contemplated as falling within the scope of the present utility model.
In the description of the present utility model, it should be noted that the azimuth or positional relationship indicated by the terms "vertical", "upper", "lower", "horizontal", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present utility model.
In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in this application will be understood by those of ordinary skill in the art according to the specific circumstances.
Example 1
Referring to fig. 1-4, this embodiment provides a muffle furnace, including the muffle furnace body 1 that comprises the brick, the both sides of muffle furnace body 1 have the opening, be located left the opening is provided with silicic acid apron 11 and rather than sealing connection, and the danner machine jackshaft 4 passes silicic acid apron 11 is connected with the swivelling tube 5 of rolling up glass liquid, swivelling tube 5 is located in the inner chamber of muffle furnace body 1, be located the right the opening is connected with forming chamber 12 and rather than sealing connection, the lower extreme of muffle furnace body 1 is provided with supporting steel structure 13, still includes muffle furnace valve group 2, muffle furnace valve group 2 with spray gun 141 in the muffle furnace body 1 links to each other through metal collapsible tube 3 and manifold 31 in proper order, the front and back bilateral symmetry of muffle furnace body 1 is provided with a plurality of holes 14, every in the hole 14 all install spray gun 141, muffle furnace valve group 2 has included blender 27, has improved uniformity and combustion gas venturi speed through changing former straight blender into blender 27.
The muffle valve block 2 provides a heat source for the muffle body 1, and pre-mixed gas is conveyed to and connected to the spray gun 141 of the muffle body 1 through the metal hose 3 and the manifold 31 by mixing natural gas and air accurately according to a certain proportion.
In this embodiment, the muffle valve assembly 2 further includes a natural gas inlet 24, a plurality of natural gas outlets 21, two combustion blowers 25, and a main air duct 26, and specifically, the number of natural gas outlets 21 is 7.
In this embodiment, the main air duct 26 is connected to two combustion-supporting fans 2, and the two combustion-supporting fans 2 are used for one.
In this embodiment, the natural gas inlet 24, the natural gas outlet 21, the combustion fan 25, and the venturi mixer 27 are all connected by pipes.
In this embodiment, a plurality of combustion-supporting air regulating valves 22 and natural gas regulating valves 23 are arranged on the pipeline, so that accurate control of small-flow natural gas is realized.
In this embodiment, each of the natural gas outlets 21 is connected to the lance 141 sequentially through a metal hose 3 and a manifold 31, specifically, a single metal hose 3 before the lance 141 is changed to a hard tube with less alkali pressure loss,
in this embodiment, each manifold 31 is controlled by a set of high-precision sliding window type regulating valves and a heat value mass flowmeter, where the regulating valves and the flowmeter are separately external, and simultaneously, the type selection of the regulating valves and the flowmeter is optimized, so that the accurate control of the small-flow natural gas is realized.
In this embodiment, the spray guns 141 are flameless combustion spray guns, the number of the spray guns 141 is at least 50, the original 80 spray guns are changed into 50 spray guns, and the total natural gas consumption of the muffle furnace is 24Nm 3 The/h is reduced to 4.5Nm 3 Per h, the natural gas consumption of each zone is 8Nm 3 /h, to 1.5Nm 3 /h。
In this embodiment, the volume of the muffle body 1 is 1.4m 3 The space size of the muffle furnace is changed to be small, and the whole space volume is changed from the original 3.5m 3 Reduced to 1.4m 3 The transverse and longitudinal temperature difference caused by space heat convection is greatly reduced, and the investment cost of the muffle furnace is saved; at the same time, after the muffle furnace is changed to be small in size, the quantity of the spray guns is small, and the spray guns are correspondingly small in alkaliThe original 80 counts are changed into 50 counts, and the total natural gas consumption of the muffle furnace is changed from the original 24Nm 3 The/h is reduced to 4.5Nm 3 Per h, the natural gas consumption of each zone is 8Nm 3 /h, to 1.5Nm 3 /h。
In the embodiment, the temperatures of the first zone, the second zone and the third zone of the muffle furnace are gradually reduced, and the temperature parameters of each zone are set according to the glass tubes with different pipe diameters; the transverse and longitudinal temperature differences of each zone are controlled as low as possible, and the diameter qualification rate of the glass tube can be obviously improved.
The utility model also provides a muffle furnace combustion system, this muffle furnace combustion system include foretell muffle furnace, and the external diameter qualification rate of the glass pipe of making is by 20% to 85%.
The foregoing description is only a preferred embodiment of the present utility model and is not intended to limit the embodiments and scope of the present utility model, and it should be appreciated by those skilled in the art that equivalent substitutions and obvious variations may be made using the present utility model and the description, and all the modifications are included in the scope of the present utility model.
Claims (10)
1. The utility model provides a muffle, includes muffle body (1) of constituteing by the brick, the both sides of muffle body (1) have the opening, are located the left side the opening is provided with silicic acid apron (11) and rather than sealing connection, and DANNAN big axle (4) pass silicic acid apron (11) are connected with rotatory pipe (5) of being rolled up glass liquid, rotatory pipe (5) are located in the inner chamber of muffle body (1), are located the right side the opening is connected with forming chamber (12) and rather than sealing connection, the lower extreme of muffle body (1) is provided with support steel structure (13), a serial communication port, still includes muffle valve group (2), muffle valve group (2) with spray gun (141) in muffle body (1) link to each other through metal collapsible tube (3) and manifold (31) in proper order, both sides symmetry is provided with a plurality of holes (14) around muffle body (1), every in hole (14) all install spray gun (141), muffle valve group (27) include.
2. Muffle according to claim 1, wherein the muffle valve block (2) further comprises a natural gas inlet (24) and natural gas outlets (21), two combustion blowers (25) and a main air duct (26).
3. Muffle according to claim 2, wherein the main duct (26) connects two combustion blowers (25).
4. Muffle according to claim 2, wherein the natural gas inlet (24), the natural gas outlet (21), the combustion fan (25) and the venturi mixer (27) are all connected by pipes.
5. Muffle according to claim 4, characterized in that the duct is provided with a plurality of combustion air regulating valves (22) and natural gas regulating valves (23).
6. Muffle according to claim 2, wherein each of said natural gas outlets (21) is connected to said lance (141) in turn by means of a metal hose (3) and a manifold (31).
7. Muffle according to claim 6, wherein the manifold (31) is controlled by a set of high-precision sliding window regulating valves and a heating value mass flowmeter.
8. Muffle according to claim 1, characterized in that the lances (141) are flameless combustion lances, the number of lances (141) being at least 50.
9. Muffle according to claim 1, characterized in that the volume of the muffle body (1) is 1.4-2.0m 3 。
10. A muffle combustion system comprising a muffle as claimed in any of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223603652.3U CN219474250U (en) | 2022-12-30 | 2022-12-30 | Muffle furnace and combustion system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223603652.3U CN219474250U (en) | 2022-12-30 | 2022-12-30 | Muffle furnace and combustion system thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219474250U true CN219474250U (en) | 2023-08-04 |
Family
ID=87459918
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223603652.3U Active CN219474250U (en) | 2022-12-30 | 2022-12-30 | Muffle furnace and combustion system thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219474250U (en) |
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2022
- 2022-12-30 CN CN202223603652.3U patent/CN219474250U/en active Active
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