Porcelain firing kiln

Abstract

The utility model relates to a kind of porcelain combustion kiln, including the furnace body with combustion chamber being arranged inside, furnace body front is equipped with furnace door, the furnace wall of furnace body two sides is equipped with several burner mounting hole, each burner mounting hole is equipped with burner;The burner includes fixed base, ignition device, gas pipe, hydrogen-oxygen gas pipe and combustion air duct, the gas pipe and hydrogen-oxygen gas pipe are located in combustion air duct inside, combustion air duct passes through burner mounting hole and its front end is provided with flame outlet, hydrogen-oxygen gas pipe front end is connected with gas pipeline middle section by jet mixer, gas pipe front end is closed and the periphery is distributed with gas hole, and gas pipe front end extends to flame outlet place.The utility model porcelain combustion kiln design is reasonable, structure is novel, uses hydrogen-oxygen gas and natural gas as mixed fuel, reduces natural gas consumption, since hydrogen-oxygen gas combustion only produces water vapor, no harmful emissions, meet clean energy trend, reduce input cost.

Description

Technical Field

[0001] This utility model relates to the field of combustion kilns, and in particular to a porcelain combustion kiln. Background Technology

[0002] Existing combustion kilns mostly use a mixture of pure hydrogen and natural gas as fuel, which offers high safety but also high investment costs. With increasing environmental awareness and the development of renewable energy, finding cleaner and more efficient energy alternatives is becoming increasingly important. Hydrogen and oxygen are a high-calorific-value mixture of gases. Produced in a hydrogen-oxygen generator using water as a raw material through electrolysis and other processes, this mixture of hydrogen and oxygen in a specific ratio produces high energy density upon combustion. It only produces water vapor and emits no harmful gases, thus being considered an environmentally friendly and clean fuel.

[0003] Because hydrogen and oxygen have extremely high combustion speeds and explosiveness, and existing burners premix pure hydrogen and natural gas before they enter the burner, there may be safety hazards if they are directly applied to the combustion of hydrogen-oxygen and natural gas mixtures. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a porcelain combustion kiln that uses hydrogen, oxygen and natural gas as mixed fuels to reduce input costs. The burner adopts an internal fuel mixing method, which is safe and reliable.

[0005] This utility model is achieved by the following scheme: a porcelain firing kiln, including a furnace body with an internal combustion chamber, a furnace door on the front of the furnace body, and several burner mounting holes on the two side walls of the furnace body, each burner mounting hole being installed with a burner; the burner includes a fixed base, an ignition device, a gas pipe, a hydrogen-oxygen pipe, and a combustion-supporting air duct, the gas pipe and the hydrogen-oxygen pipe being located inside the combustion-supporting air duct, the combustion-supporting air duct passing through the burner mounting hole and having a flame outlet at its front end, the front end of the hydrogen-oxygen pipe being connected to the middle section of the gas pipe through a jet mixer, the front end of the gas pipe being closed and having gas outlets distributed around its perimeter, the front end of the gas pipe extending to the flame outlet.

[0006] Furthermore, the jet mixer includes a nozzle and a mixing tube fitted on the nozzle. The mixing tube has a negative pressure suction chamber, a constriction inlet, a mixing throat, and a diffusion outlet arranged sequentially from back to front. The nozzle has a conical nozzle located in the middle of the negative pressure suction chamber at the front. The mixing tube has an suction port communicating with the negative pressure suction chamber at the rear side.

[0007] Furthermore, the rear ends of the gas pipe and the hydrogen-oxygen pipe are connected to a fixed base, and the fixed base has a gas inlet communicating with the gas pipe and a hydrogen-oxygen inlet communicating with the hydrogen-oxygen pipe.

[0008] Furthermore, the front of the fixed base is provided with a first flange, the rear end of the combustion air duct is provided with a second flange connected to the first flange, and the rear side of the combustion air duct is provided with an air inlet; a flange located in front of the air inlet is fixedly connected to the outside of the combustion air duct, and the flange is connected to the outer end of the burner mounting hole.

[0009] Furthermore, an air outlet plate is provided inside the combustion-supporting air duct near the flame outlet, and several air outlet holes are distributed on the air outlet plate. Several inclined swirl grooves are distributed around the periphery of the air outlet plate and penetrate both sides of the air outlet plate.

[0010] Furthermore, the ignition device includes an ignition electrode connected to a fixed base, the probe of which extends to the flame outlet; a flame detection electrode is also connected to the fixed base, the probe of which extends to the flame outlet.

[0011] Furthermore, the combustion chamber of the furnace body is provided with shelves for placing porcelain.

[0012] Furthermore, one side of the furnace door is hinged to the furnace body, and the other side is connected to the furnace body via a locking device; the locking device includes a screw that is hinged to the furnace body and can swing left and right, and a U-shaped part is provided on the other side of the furnace door for the screw to pass through. A locking nut for pressing the U-shaped part is threaded onto the screw, and a handwheel is fixedly connected to the locking nut.

[0013] Compared with the prior art, the present invention has the following advantages: The ceramic combustion kiln of the present invention has a reasonable design and novel structure. It uses hydrogen, oxygen and natural gas as mixed fuels, which reduces the amount of natural gas used. Since the combustion of hydrogen and oxygen only produces water vapor and has no harmful emissions, it is in line with the trend of clean energy and reduces the input cost. The burner adopts an internal fuel mixing method, in which hydrogen, oxygen and gas are mixed inside the burner, avoiding the safety hazards of external premixing of hydrogen and oxygen, and is safe and reliable.

[0014] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below through specific embodiments and related drawings. Attached Figure Description

[0015] Figure 1 This is a front view of a porcelain firing kiln according to an embodiment of this utility model; Figure 2 This is a schematic diagram of the porcelain firing kiln door in the open state according to an embodiment of this utility model; Figure 3 This is a schematic diagram of the burner structure according to an embodiment of the present invention; Figure 4 This is a cross-sectional view of the jet mixer of the burner in an embodiment of this utility model; Figure 5 yes Figure 3 View from the center (K ​​direction); Explanation of the numbers in the diagram: 100-Burner, 110-Mount, 111-Gas inlet, 112-Hydrogen / oxygen inlet, 113-First flange, 120-Gas pipe, 121-Gas outlet, 130-Hydrogen / oxygen pipe, 131-Flame arrester, 140-Combustion duct, 141-Flame outlet, 142-Second flange, 143-Air inlet, 144-Flange, 150-Jet mixer, 151-Nozzle, 152-Mixing tube, 1 53-Negative pressure suction chamber, 154-Contraction inlet, 155-Mixing throat, 156-Diffusion outlet, 157-Suction port, 160-Air outlet plate, 161-Air outlet hole, 162-Swirl groove, 170-Ignition electrode, 180-Flame detection electrode, 200-Furnace body, 210-Furnace door, 220-Combustion chamber, 230-Locking device, 231-Screw, 232-U-shaped part, 233-Locking nut, 234-Handwheel, 300-Shelf. Detailed Implementation

[0016] It should be noted that the following detailed descriptions are exemplary and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0017] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0018] like Figures 1-5As shown, a porcelain firing kiln includes a furnace body 200 with an internal combustion chamber 220. The furnace body 200 has a furnace door 210 on its front side. Several burner mounting holes are opened on both sides of the furnace body, and a burner 100 is installed in each burner mounting hole. The burner 100 includes a fixing base 110, an ignition device, a gas pipe 120, a hydrogen-oxygen pipe 130, and a combustion air duct 140. The gas pipe and the hydrogen-oxygen pipe are located inside the combustion air duct. The gas pipe 120 is located at the center of the combustion air duct 140. The combustion air duct passes through the burner mounting hole and has a flame outlet 141 at its front end. The flame outlet 141 extends into the combustion chamber. The front end of the hydrogen-oxygen pipe is connected to the middle section of the gas pipe through a jet mixer 150. The front end of the gas pipe is closed and has gas outlet holes 121 distributed around its periphery. The front end of the gas pipe 120 extends to the flame outlet. This utility model relates to a ceramic combustion kiln that uses hydrogen, oxygen, and natural gas as mixed fuels. The hydrogen and oxygen content can be increased to about 30%, reducing the amount of natural gas used. Since the combustion of hydrogen and oxygen only produces water vapor with no harmful emissions, it conforms to the trend of clean energy and reduces input costs. At the same time, the burner adopts an internal fuel mixing method, mixing hydrogen, oxygen, and natural gas within the burner, avoiding the safety hazards of external premixing of hydrogen and oxygen, ensuring safety and reliability. Furthermore, the mixing is carried out through a jet mixer, utilizing the Venturi effect to actively draw in hydrogen and oxygen by creating negative pressure, ensuring uniform mixing, improving combustion efficiency, and reducing energy consumption.

[0019] In this embodiment, a section of the gas pipe is disconnected in the middle to connect to the jet mixer 150. The two ends of the jet mixer 150 are welded to the two ends of the disconnected section of the gas pipe. The jet mixer 150 includes a nozzle 151 and a mixing tube 152 fitted on the nozzle. The mixing tube has a negative pressure suction chamber 153, a constriction inlet 154, a mixing throat 155, and a diffusion outlet 156 arranged sequentially from back to front inside. The nozzle has a conical nozzle located in the middle of the negative pressure suction chamber at the front. The mixing tube has an intake port 157 communicating with the negative pressure suction chamber at the rear side.

[0020] In this embodiment, the rear ends of the gas pipe 120 and the hydrogen-oxygen pipe 130 are connected to a fixed base. The fixed base 110 is provided with a gas inlet 111 communicating with the gas pipe and a hydrogen-oxygen inlet 112 communicating with the hydrogen-oxygen pipe.

[0021] In this embodiment, the front of the mounting base is provided with a first flange portion 113, the rear end of the combustion-supporting air duct is provided with a second flange portion 142 that is bolted to the first flange portion, and the rear side of the combustion-supporting air duct is provided with an air inlet 143. The mounting base 110 and the combustion-supporting air duct are connected by a flange, which supports modular assembly and facilitates on-site disassembly and replacement of components.

[0022] In this embodiment, an air outlet plate 160 is provided inside the combustion-supporting air duct near the flame outlet. The air outlet plate has several air outlet holes 161 distributed on it, and several inclined swirl grooves 162 are distributed around its perimeter, extending through both sides of the air outlet plate. The design of the air outlet plate enhances the mixing effect of air and fuel, and the swirl grooves generate a swirling effect, making the flame more concentrated and stable, resulting in better combustion.

[0023] In this embodiment, the ignition device includes an ignition electrode 170 connected to a fixed base, and the probe of the ignition electrode extends to the flame outlet.

[0024] In this embodiment, a flame detection electrode 180 is also connected to the mounting base, and the probe of the flame detection electrode extends to the flame outlet. The flame detection electrode 180 is used to detect whether ignition is successful. If unsuccessful ignition is detected, the external natural gas inlet pipeline is cut off. The air outlet plate 160 is also provided with clearance holes for the gas pipe, the probe of the ignition electrode, and the probe of the flame detection electrode to pass through.

[0025] In this embodiment, the flame outlet is conical. The conical flame outlet 141 makes the flame more concentrated.

[0026] In this embodiment, a flame arrester 131 is connected to the hydrogen-oxygen pipe to prevent backfire and further improve safety.

[0027] In this embodiment, the combustion chamber of the furnace body 200 is provided with a shelf 300 for placing porcelain.

[0028] In this embodiment, the furnace door 210 is hinged to the furnace body on one side and connected to the furnace body on the other side via a locking device 230. The locking device 230 includes a screw 231 hinged to the furnace body and capable of swinging left and right. A U-shaped member 232 is provided on the other side of the furnace door for the screw to pass through. A locking nut 233 for pressing the U-shaped member is threaded onto the screw. A handwheel 234 is fixedly connected to the locking nut. When the furnace door is closed, the screw swings and passes through the U-shaped member 232. By rotating the handwheel, the locking nut presses the U-shaped member 232 to achieve locking.

[0029] Unless otherwise stated, if any of the technical solutions disclosed in this utility model discloses a numerical range, then the disclosed numerical range is a preferred numerical range. Any person skilled in the art should understand that the preferred numerical range is merely one among many feasible numerical values ​​that has a more obvious or representative technical effect. Because there are many numerical values, it is impossible to list them all. Therefore, this utility model discloses only some numerical values ​​to illustrate the technical solutions of this utility model. Furthermore, the numerical values ​​listed above should not constitute a limitation on the scope of protection of this utility model.

[0030] If this utility model discloses or relates to mutually fixedly connected parts or structural components, then unless otherwise stated, a fixed connection can be understood as: a detachable fixed connection (e.g., using bolts or screws), or a non-detachable fixed connection (e.g., riveting, welding). Of course, mutually fixed connections can also be replaced by an integral structure (e.g., manufactured by integral molding using a casting process) (except where it is obviously impossible to use an integral molding process).

[0031] In addition, unless otherwise stated, the terms used to indicate positional relationships or shapes in any of the technical solutions disclosed in this utility model above include states or shapes that are similar to, close to, or approximate with them.

[0032] Any component provided by this utility model can be assembled from multiple individual components, or it can be a single component manufactured by a one-piece molding process.

[0033] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from its technical solution shall still fall within the protection scope of this utility model.

Claims

1. A porcelain firing kiln, characterized in that: The furnace includes a furnace body with an internal combustion chamber and a furnace door on the front. Several burner mounting holes are opened on both sides of the furnace body, and a burner is installed in each burner mounting hole. The burner includes a mounting base, an ignition device, a gas pipe, a hydrogen-oxygen pipe, and a combustion-supporting air duct. The gas pipe and the hydrogen-oxygen pipe are located inside the combustion-supporting air duct. The combustion-supporting air duct passes through the burner mounting holes and has a flame outlet at its front end. The front end of the hydrogen-oxygen pipe is connected to the middle section of the gas pipe through a jet mixer. The front end of the gas pipe is closed and has gas outlets distributed around its perimeter. The front end of the gas pipe extends to the flame outlet.

2. The porcelain firing kiln according to claim 1, characterized in that: The jet mixer includes a nozzle and a mixing tube fitted on the nozzle. The mixing tube has a negative pressure suction chamber, a contraction inlet, a mixing throat, and a diffusion outlet arranged sequentially from back to front. The nozzle has a conical nozzle located in the middle of the negative pressure suction chamber at the front. The mixing tube has an suction port communicating with the negative pressure suction chamber at the rear side.

3. The porcelain firing kiln according to claim 1, characterized in that: The rear ends of the gas pipe and the hydrogen-oxygen pipe are connected to a fixed base, and the fixed base has a gas inlet connected to the gas pipe and a hydrogen-oxygen inlet connected to the hydrogen-oxygen pipe.

4. The porcelain firing kiln according to claim 1, characterized in that: The fixed base is provided with a first flange at the front, and the combustion air duct is provided with a second flange at the rear end that is connected to the first flange. An air inlet is provided on the side of the rear end of the combustion air duct. A flange located in front of the air inlet is fixedly connected to the outside of the combustion air duct, and the flange is connected to the outer end opening of the burner mounting hole.

5. The porcelain firing kiln according to claim 1, characterized in that: The combustion-supporting air duct is equipped with an air outlet plate near the flame outlet. The air outlet plate has several air outlet holes and several inclined swirl grooves that run through both sides of the air outlet plate.

6. The porcelain firing kiln according to claim 1, characterized in that: The ignition device includes an ignition electrode connected to a fixed base, the probe of which extends to the flame outlet; a flame detection electrode is also connected to the fixed base, the probe of which extends to the flame outlet.

7. The porcelain firing kiln according to claim 1, characterized in that: The combustion chamber of the furnace is equipped with shelves for displaying porcelain.

8. The porcelain firing kiln according to claim 1, characterized in that: The furnace door is hinged to the furnace body on one side and connected to the furnace body on the other side by a locking device. The locking device includes a screw that is hinged to the furnace body and can swing left and right. A U-shaped part is provided on the other side of the furnace door for the screw to pass through. A locking nut for pressing the U-shaped part is threaded on the screw. A handwheel is fixedly connected to the locking nut.

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