CN212511132U - Energy-saving natural gas burner with heat compensation for flame path of roasting furnace - Google Patents
Energy-saving natural gas burner with heat compensation for flame path of roasting furnace Download PDFInfo
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- CN212511132U CN212511132U CN202021049086.4U CN202021049086U CN212511132U CN 212511132 U CN212511132 U CN 212511132U CN 202021049086 U CN202021049086 U CN 202021049086U CN 212511132 U CN212511132 U CN 212511132U
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Abstract
A roasting furnace flame path heat compensation energy-saving natural gas burner comprises a circular flange, a natural gas inlet pipe, a natural gas pressure charging pipe and a gas preheating mixing assembly, wherein an air mixing cavity is formed between the upper part of the gas preheating mixing assembly and the circular flange, an air inlet gap is formed between the top of the gas preheating mixing assembly and an annular groove on the circular flange, an air inlet channel is formed between the inner wall of the gas preheating mixing assembly and the outer wall of the natural gas pressure charging pipe, and a hot air channel is arranged on the gas preheating mixing assembly; the air inlet gap introduces external air into the air mixing cavity, the hot air channel introduces the air into the roasting furnace into the air mixing cavity for full mixing, the high-pressure natural gas sprayed from the natural gas pressurization pipe drives the high-temperature mixed gas to be input into the air inlet channel, and the natural gas and the high-temperature mixed gas are mixed and then sprayed out from the outlet end of the gas preheating mixing component for combustion, so that the heat efficiency of the furnace chamber of the roasting furnace is improved, the roasting quality is improved, and the production cost is reduced.
Description
Technical Field
The utility model relates to a metallurgical equipment technical field especially relates to an energy-conserving natural gas burner of burning furnace flame path heat compensation bakes burning over a slow fire.
Background
In the traditional roasting production process of the prebaked electrolytic aluminum anode carbon block, a natural gas and air preheating and mixing device is not designed for a flame path burner of a roasting furnace combustion frame. The natural gas sprayed into the flame path of the roasting furnace is not sufficiently combusted, the combustion intensity in the flame path is low, the temperature rising speed of the furnace chamber is low, the carbon product is not uniformly heated, and the yield of the carbon product is low. Not only the production cost of enterprises is high, but also national resources are seriously wasted.
Disclosure of Invention
In view of the above, there is a need for an energy-saving natural gas burner for compensating heat of a flue of a roasting furnace.
A roasting furnace flame path heat compensation energy-saving natural gas burner comprises a circular flange, a natural gas inlet pipe, a natural gas pressure pipe and a gas preheating mixing component, wherein a mounting hole is formed in the middle position of the circular flange, an annular groove is formed in the surface of the lower part of the circular flange, one end of the natural gas inlet pipe is inserted into the mounting hole and is fixedly connected with the circular flange, the natural gas pressure pipe is arranged below the circular flange, the inlet end of the natural gas pressure pipe is detachably connected with the outlet end of the natural gas inlet pipe, the gas preheating mixing component is arranged below the circular flange, the upper part of the gas preheating mixing component is detachably connected with the circular flange, a space is reserved between the upper part of the gas preheating mixing component and the circular flange, and an air mixing cavity for air preheating mixing is formed between the upper part of the gas preheating mixing component and the circular, the top of the gas preheating mixing component is clamped into the annular groove of the circular flange, a gap is reserved between the top of the gas preheating mixing component and the annular groove, an air inlet gap for external air to enter the gas preheating mixing cavity is formed between the top of the gas preheating mixing component and the annular groove, the gas preheating mixing component is sleeved on the natural gas booster pipe, a gap is reserved between the inner wall of the gas preheating mixing component and the outer wall of the natural gas booster pipe, an air inlet channel for air to enter the gas preheating mixing cavity is formed between the inner wall of the gas preheating mixing component and the outer wall of the natural gas booster pipe, a hot air channel for leading hot air in the roasting furnace into the gas preheating mixing cavity is further arranged on the gas preheating mixing component, so that hot air flow in the roasting furnace flame path is led into the gas preheating mixing cavity to be mixed with the external air in the gas preheating mixing cavity to obtain high-temperature mixed gas, high-pressure natural gas sprayed from the natural gas booster pipe drives high-temperature mixed gas to be input into the gas inlet channel, and the mixed gas is sprayed out from the outlet end of the gas preheating mixing assembly for combustion after being mixed with the high-temperature mixed gas.
Preferably, the gas preheating mixing assembly comprises a gas mixing pipe, a protective sleeve and an annular connecting groove, one open end of the annular connecting groove is clamped into an annular groove of the circular flange, a bolt hole is formed in the bottom of the annular connecting groove, the annular connecting groove is connected with the circular flange through a bolt, an air mixing cavity is formed between the annular connecting groove and the circular flange, the protective sleeve is fixedly arranged below the annular connecting groove, an inlet end of the protective sleeve is communicated with the inside of the annular connecting groove, the gas mixing pipe is sleeved on the natural gas pressurization pipe, the upper part of the gas mixing pipe is detachably connected with the annular connecting groove, a gap is reserved between the top of the gas mixing pipe and the surface of the lower part of the circular flange, a gap is reserved between the inner wall of the gas mixing pipe and the outer wall of the natural gas pressurization pipe, and an air inlet channel is formed between, the air inlet channel is communicated with the inside of the air mixing cavity, and a gap is reserved between the outer wall of the gas mixing pipe and the protective sleeve, so that a hot air channel for enabling hot air inside the roasting furnace to enter the air mixing cavity is formed between the outer wall of the gas mixing pipe and the inner wall of the protective sleeve.
Preferably, the inside of annular spread groove is fixed and is provided with the connecting plate, and the upper portion of gas mixing pipe is fixed and is provided with the pipe strap, and the pipe strap passes through bolted connection with the connecting plate.
Preferably, an air inlet hole for air to enter is formed in the circular flange, and an air quantity adjusting plate for controlling air inflow is arranged on the air inlet hole.
Preferably, a gap is left between the top of the annular connecting groove and the annular groove to form an air inlet gap for the entrance of outside air.
Preferably, the upper part of the gas mixing pipe is provided with a clamping groove, and the pipe clamp is clamped into the clamping groove and connected with the gas mixing pipe.
Preferably, the inside of natural gas pressure boost pipe is provided with the reducing hole, and the whole natural gas pressure boost pipe is run through along the axial direction of natural gas pressure boost pipe to the reducing hole, and the inside of natural gas intake pipe is inserted to the one end that the reducing hole diameter is big to with natural gas intake pipe threaded connection, the one end and the gas mixing pipe that the reducing pipe diameter is little, in order to spout the natural gas into the gas mixing pipe.
The utility model adopts the above technical scheme, its beneficial effect lies in: the utility model comprises a circular flange, a natural gas inlet pipe, a natural gas pressure charging pipe and a gas preheating mixing component, wherein the middle position of the circular flange is provided with a mounting hole, the surface of the lower part of the circular flange is provided with a ring groove, one end of the natural gas inlet pipe is inserted into the mounting hole and is fixedly connected with the circular flange, the natural gas pressure charging pipe is arranged below the circular flange, the inlet end of the natural gas pressure charging pipe is detachably connected with the outlet end of the natural gas inlet pipe, the gas preheating mixing component is arranged below the circular flange, the upper part of the gas preheating mixing component is detachably connected with the circular flange, a space is left between the upper part of the gas preheating mixing component and the circular flange, an air mixing cavity for air preheating mixing is formed between the upper part of the gas preheating mixing component and the circular flange, the top part of the gas preheating mixing component is, a gap is reserved between the top of the gas preheating and mixing component and the annular groove, so that an air inlet gap for allowing external air to enter the gas preheating and mixing cavity is formed between the top of the gas preheating and mixing component and the annular groove, the gas preheating and mixing component is sleeved on the natural gas booster pipe, a gap is reserved between the inner wall of the gas preheating and mixing component and the outer wall of the natural gas booster pipe, an air inlet channel for allowing air to enter the gas preheating and mixing cavity is formed between the inner wall of the gas preheating and mixing component and the outer wall of the natural gas booster pipe, and a hot air channel for guiding hot air in the roasting furnace into the gas preheating and mixing cavity is further arranged on the gas preheating and mixing component; the air mixing intracavity is introduced with external air through the air inlet gap that sets up, and the hot-air in the roasting furnace also enters into the air mixing intracavity through the gas preheating mixing subassembly, makes the hot-air mixture in external cold air and the roasting furnace, then enters into the gas through inlet channel and preheats inside the mixing subassembly, spouts into the burning furnace after spouting into the gas preheating mixing subassembly inside natural gas misce bene together and burns. Adopt the utility model discloses a scheme bakes burning furnace flame propagation speed fast in the flame path over a slow fire, increases combustion strength, strengthens combustion temperature, improves and bakes burning furnace chamber thermal efficiency over a slow fire to improve carbon element goods calcination quality, and reduce natural gas production unit consumption in a large number, reduce the manufacturing cost of enterprise, energy saving consumed.
Because the natural gas and the volatile in the flame path of the roasting furnace are fully combusted, the smoke emission completely reaches the national environmental protection index, and the safety risk of flame path wall explosion caused by insufficient combustion of the natural gas in the flame path of the roasting furnace is eliminated.
When the natural gas nozzle of the burner injects air, a negative pressure area is formed inside the mixed gas diffusion pipe, the negative pressure sucks the low temperature of about 400 ℃ in the heat air mixing cavity into the mixed gas diffusion pipe with the high temperature of about 1200 ℃ through the gap between the mixed gas diffusion pipe and the circular flange, so that the natural gas nozzle and the mixed gas diffusion pipe which work in the high temperature area of about 1200 ℃ are effectively cooled, the burning loss is prevented, the service cycle of the burner is prolonged, and the purpose of saving spare part cost is achieved.
According to the characteristics of domestic roasting furnace combustion system equipment, the aperture of a natural gas nozzle of a burner is designed in an optimal range (the aperture is 4.5mm-5.8 mm), the spraying force of the natural gas nozzle is strong, and the flame jet flow of a mixed gas diffusion tube mixing cavity is long and the speed is high; according to the flame combustion condition of each flame path of the on-site combustion frame roasting furnace, the air quantity adjusting plate is rotated to adjust the air inflow so that the flame reaches the optimal combustion state. The temperature of each material box in the furnace chamber is ensured to be uniform, the roasting quality of the carbon blocks is effectively ensured, and meanwhile, the process control of roasting the anode carbon blocks is also facilitated to be optimized.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a partially enlarged view of a portion a in fig. 1.
In the figure: the device comprises a circular flange 01, a natural gas inlet pipe 02, a natural gas pressurization pipe 03, an air inlet hole 04, an annular groove 05, an air inlet channel 06, an air mixing cavity 07, a gas mixing pipe 08, a protection sleeve 09, an annular connecting groove 10, a bolt hole 11, a hot air channel 12, a connecting plate 13, a pipe clamp 14, an air volume adjusting plate 15, an air inlet gap 16, a clamping groove 17 and a reducing hole 18.
Detailed Description
Please refer to fig. 1-2, an embodiment of the utility model provides a bake burning furnace flame path heat compensation energy-saving natural gas burner over a slow fire, including circular flange 01, natural gas intake pipe 02, natural gas pressure tube 03, the gas preheats the hybrid module, offer the inlet port 04 that is used for the air admission on the circular flange 01, be provided with the air regulation board 15 that is used for controlling the air intake flow on the inlet port 04, the mounting hole has been seted up to the intermediate position of circular flange 01, the ring channel 05 has been seted up on the surface to the lower part of circular flange 01, the one end of natural gas intake pipe 02 is inserted in the mounting hole, and with circular flange 01 fixed connection, for example, can adopt the. The natural gas booster pipe 03 is arranged below the circular flange 01, the inlet end of the natural gas booster pipe 03 is detachably connected with the outlet end of the natural gas inlet pipe 02, the gas preheating and mixing assembly is arranged below the circular flange 01, the upper portion of the gas preheating and mixing assembly is detachably connected with the circular flange 01, a space is reserved between the upper portion of the gas preheating and mixing assembly and the circular flange 01, an air mixing cavity 07 for air preheating and mixing is formed between the upper portion of the gas preheating and mixing assembly and the circular flange 01, the air mixing cavity 07 is communicated with the air inlet hole 04, and external air can enter the air mixing cavity 07 from the air inlet hole 04. The top of the gas preheating mixing assembly is clamped into the annular groove 05 of the circular flange 01, a gap is reserved between the top of the gas preheating mixing assembly and the annular groove 05, an air inlet gap 16 for allowing external air to enter the gas preheating mixing cavity 07 is formed between the top of the gas preheating mixing assembly and the annular groove 05, and the external air can enter the air mixing cavity 07 from the air inlet gap 16. The gas preheating and mixing assembly is sleeved on the natural gas pressurizing pipe 03, a gap is reserved between the inner wall of the gas preheating and mixing assembly and the outer wall of the natural gas pressurizing pipe 03, an air inlet channel 06 for air to enter is formed between the inner wall of the gas preheating and mixing assembly and the outer wall of the natural gas pressurizing pipe 03, a hot air channel 12 for leading hot air in the roasting furnace into the gas preheating and mixing cavity is further arranged on the gas preheating and mixing assembly, and the hot air channel 12 is communicated with the roasting furnace and the inside of the gas preheating and mixing cavity 07 to lead hot air in a fire channel of the roasting furnace into the gas preheating and mixing cavity to be mixed with external air in the gas preheating and mixing cavity to obtain high-temperature mixed gas. The external air is introduced into the air mixing cavity 07 through the arranged air inlet holes 04 and the air inlet gap 16, the hot air in the roasting furnace also enters the air mixing cavity 07 through the gas preheating mixing component, so that the external cold air is mixed with the hot air in the roasting furnace, the high-pressure natural gas sprayed out of the natural gas booster pipe 03 drives the high-temperature mixed gas to be input into the air inlet channel 06 and then enters the inside of the gas preheating mixing component through the air inlet channel 06, so that the natural gas and the high-temperature mixed gas are uniformly mixed, and then the high-pressure natural gas is sprayed into the roasting furnace from the outlet end of the gas preheating mixing component for combustion, so that the combustion intensity of the natural gas is increased, the combustion temperature is strengthened, the thermal efficiency of the carbon furnace chamber is improved, the roasting quality of carbon products is improved, the single consumption of the natural.
The gas preheats hybrid module and includes gas hybrid tube 08, protective case 09, annular connecting groove 10 open-ended one end is gone into in the ring channel 05 of circular flange 01, bolt hole 11 has been seted up to the bottom of annular connecting groove 10, annular connecting groove 10 passes through bolted connection with circular flange 01, make and form air mixing chamber 07 between annular connecting groove 10 and the circular flange 01, protective case 09 is fixed to be set up in the below of annular connecting groove 10, and protective case 09's entry end and the inside intercommunication of annular connecting groove 10, protective case 09 can adopt the welding mode with the fixed mode of annular connecting groove 10 to be connected. The gas mixing pipe 08 is sleeved on the natural gas pressurizing pipe 03, the upper portion of the gas mixing pipe 08 is detachably connected with the annular connecting groove 10, a gap is reserved between the top of the gas mixing pipe 08 and the surface of the lower portion of the circular flange 01, a gap is reserved between the inner wall of the gas mixing pipe 08 and the outer wall of the natural gas pressurizing pipe 03, an air inlet channel 06 is formed between the inner wall of the gas mixing pipe 08 and the outer wall of the natural gas pressurizing pipe 03, the air inlet channel 06 is communicated with the inside of the air mixing cavity 07, a gap is reserved between the outer wall of the gas mixing pipe 08 and the inner wall of the protective sleeve 09, and a hot air channel 12 for hot air in the roasting furnace to enter the air mixing cavity 07 is formed between the outer wall of the gas mixing pipe 08 and. Because the protective sleeve 09 is arranged outside the gas mixing pipe 08, the protective sleeve 09 moves along with the moving period of the burning equipment of the roasting furnace in the production process, and the gas mixing pipe 08 often collides with a mounting seat on the equipment in the moving process to cause damage to the gas mixing pipe 08, so that the gas mixing pipe 08 can be effectively prevented from being damaged by impact in the moving process by the aid of the arranged protective sleeve 09.
The inside of annular connecting groove 10 is fixed and is provided with connecting plate 13, and the upper portion of gas mixing pipe 08 is fixed and is provided with pipe strap 14, and pipe strap 14 passes through bolted connection with connecting plate 13.
A gap is reserved between the top of the annular connecting groove 10 and the annular groove 05 to form an air inlet gap 16 for the outside air to enter, a small gasket is installed in the air inlet gap 16, the thickness of the small gasket is just the distance between the air inlet gaps 16, and quantitative outside air can enter the air mixing cavity 07.
The upper portion of the gas mixing pipe 08 is provided with a clamping groove 17, and the pipe clamp 14 is clamped into the clamping groove 17 to connect the pipe clamp 14 with the gas mixing pipe 08.
The inside of natural gas booster pipe 03 is provided with reducing hole 18, and reducing hole 18 runs through whole natural gas booster pipe 03 along natural gas booster pipe 03's axial direction, and the inside of natural gas intake pipe 02 is inserted to the one end that reducing hole 18 diameter is big to with natural gas intake pipe 02 threaded connection, the one end that the reducing pipe diameter is little and gas mixing pipe 08, in order to spout into gas mixing pipe 08 with the natural gas, the little one section diameter of reducing pipe diameter is less than 6 mm.
When the invention is installed on the fire channel opening of the roasting furnace for use, as the diameter of the section with the small diameter of the reducer pipe is less than 6mm, the sprayed natural gas can be ensured to have stronger spraying force, thus vacuum can be formed in the gas mixing pipe 08 to generate negative pressure, outside air enters the air mixing cavity 07 through the air inlet hole 04 and the air inlet gap 16, hot air in the roasting furnace is sucked into the air mixing cavity 07 through the hot air channel 12 to mix cold air and hot air, the mixed air with the temperature of about 400 ℃ is introduced into the gas mixing pipe 08 through the air inlet channel 06, and the natural gas is sprayed into the gas mixing pipe 08 through the reducer pipe, so that the air with the temperature of about 400 ℃ is fully mixed with the natural gas and is sprayed into the roasting furnace for violent combustion, thereby accelerating the flame propagation speed in the fire channel of the roasting furnace and strengthening the combustion temperature, the heat efficiency of the roasting furnace chamber is improved, the roasting quality of carbon products is improved, the unit consumption of natural gas production is reduced, the production cost of enterprises is reduced, and the energy consumption is saved.
Vacuum is formed in the gas mixing pipe 08 to generate negative pressure, the mixed gas is continuously and quickly sucked into the gas mixing pipe 08 through the gas inlet channel 06 by the negative pressure, the natural gas pressurizing pipe 03 and the gas mixing pipe 08 work in an environment of 1200 ℃, when the mixed gas at low temperature quickly flows, the temperature of the natural gas pressurizing pipe 03 and the temperature of the gas mixing pipe 08 are quickly reduced, the natural gas pressurizing pipe 03 and the gas mixing pipe 08 are effectively prevented from burning and bursting at high temperature for a long time, and meanwhile, the natural gas pressurizing pipe 03 and the gas inlet channel 06 are prevented from being blocked after the natural gas pressurizing pipe 03 is burnt and burst. Because the natural gas booster pipe 03 and the fuel gas mixing pipe 08 are effectively protected by the low-temperature mixed gas, the service lives of the natural gas booster pipe 03 and the fuel gas mixing pipe 08 are prolonged, the service cycle is prolonged, and a large amount of spare part cost is saved for production enterprises.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.
Claims (7)
1. The utility model provides a roast burning furnace flame path heat compensation energy-conserving natural gas burner which characterized in that: the natural gas preheating and mixing device comprises a circular flange, a natural gas inlet pipe, a natural gas pressurizing pipe and a fuel gas preheating and mixing component, wherein a mounting hole is formed in the middle of the circular flange, an annular groove is formed in the surface of the lower portion of the circular flange, one end of the natural gas inlet pipe is inserted into the mounting hole and is fixedly connected with the circular flange, the natural gas pressurizing pipe is arranged below the circular flange, the inlet end of the natural gas pressurizing pipe is detachably connected with the outlet end of the natural gas inlet pipe, the fuel gas preheating and mixing component is arranged below the circular flange, the upper portion of the fuel gas preheating and mixing component is detachably connected with the circular flange, a space is reserved between the upper portion of the fuel gas preheating and mixing component and the circular flange, an air mixing cavity for preheating and mixing air is formed between the upper portion of the fuel gas preheating and mixing component and, a gap is reserved between the top of the gas preheating mixing assembly and the annular groove, an air inlet gap for allowing external air to enter the gas preheating mixing cavity is formed between the top of the gas preheating mixing assembly and the annular groove, the gas preheating mixing assembly is sleeved on the natural gas pressure pipe, a gap is reserved between the inner wall of the gas preheating mixing assembly and the outer wall of the natural gas pressure pipe, an air inlet channel for allowing air to enter the gas preheating mixing cavity is formed between the inner wall of the gas preheating mixing assembly and the outer wall of the natural gas pressure pipe, and a hot air channel for guiding hot air in the roasting furnace into the gas preheating mixing cavity is further arranged on the gas preheating mixing assembly.
2. The burner of claim 1, wherein the burner is a natural gas burner with heat compensation and energy saving for a flame path of a roasting furnace, and is characterized in that: the gas preheating mixing assembly comprises a gas mixing pipe, a protective sleeve and an annular connecting groove, wherein one open end of the annular connecting groove is clamped into an annular groove of a circular flange, a bolt hole is formed in the bottom of the annular connecting groove, the annular connecting groove is connected with the circular flange through a bolt, an air mixing cavity is formed between the annular connecting groove and the circular flange, the protective sleeve is fixedly arranged below the annular connecting groove, the inlet end of the protective sleeve is communicated with the inside of the annular connecting groove, the gas mixing pipe is sleeved on a natural gas pressurizing pipe, the upper part of the gas mixing pipe is detachably connected with the annular connecting groove, a gap is reserved between the top of the gas mixing pipe and the lower surface of the circular flange, a gap is reserved between the inner wall of the gas mixing pipe and the outer wall of the natural gas pressurizing pipe, and an air inlet channel is formed between the, the air inlet channel is communicated with the inside of the air mixing cavity, and a gap is reserved between the outer wall of the gas mixing pipe and the protective sleeve, so that a hot air channel for enabling hot air inside the roasting furnace to enter the air mixing cavity is formed between the outer wall of the gas mixing pipe and the inner wall of the protective sleeve.
3. The burner of claim 2, wherein the burner is a natural gas burner with heat compensation and energy saving for a flame path of a roasting furnace, and is characterized in that: the inside of annular spread groove is fixed and is provided with the connecting plate, and the upper portion of gas mixing tube is fixed and is provided with the pipe strap, and the pipe strap passes through bolted connection with the connecting plate.
4. The burner of claim 1, wherein the burner is a natural gas burner with heat compensation and energy saving for a flame path of a roasting furnace, and is characterized in that: an air inlet hole for air to enter is formed in the circular flange, and an air quantity adjusting plate for controlling air inflow is arranged on the air inlet hole.
5. The burner of claim 2, wherein the burner is a natural gas burner with heat compensation and energy saving for a flame path of a roasting furnace, and is characterized in that: a gap is reserved between the top of the annular connecting groove and the annular groove to form an air inlet gap for external air to enter.
6. The burner of claim 3, wherein the burner is characterized in that: the upper portion of gas hybrid tube is provided with the joint groove, and the pipe strap card is gone into to the joint inslot, is connected pipe strap and gas hybrid tube.
7. The burner of claim 1, wherein the burner is a natural gas burner with heat compensation and energy saving for a flame path of a roasting furnace, and is characterized in that: the inside of natural gas pressure boost pipe is provided with the reducing hole, and the whole natural gas pressure boost pipe is run through along the axial direction of natural gas pressure boost pipe to the reducing hole, and the inside of natural gas intake pipe is inserted to the one end that the reducing hole diameter is big to with natural gas intake pipe threaded connection, the one end and the gas hybrid tube that the reducing pipe diameter is little, in order to spout the natural gas into the gas hybrid tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021049086.4U CN212511132U (en) | 2020-06-09 | 2020-06-09 | Energy-saving natural gas burner with heat compensation for flame path of roasting furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021049086.4U CN212511132U (en) | 2020-06-09 | 2020-06-09 | Energy-saving natural gas burner with heat compensation for flame path of roasting furnace |
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| Publication Number | Publication Date |
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| CN212511132U true CN212511132U (en) | 2021-02-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021049086.4U Active CN212511132U (en) | 2020-06-09 | 2020-06-09 | Energy-saving natural gas burner with heat compensation for flame path of roasting furnace |
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| CN (1) | CN212511132U (en) |
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| GR01 | Patent grant | ||
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Effective date of registration: 20210907 Address after: 751600 No. 66 Kangle street, Qingtongxia City, Wuzhong City, Ningxia Hui Autonomous Region Patentee after: Ningxia Qingtongxia longyuxin industry and Trade Co.,Ltd. Address before: 751600 No. 9-1-101, Yuntian Huafu, Qingtongxia City, Wuzhong City, Ningxia Hui Autonomous Region Patentee before: Han Yu |
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