Gas premixing type energy-saving kiln
By setting exhaust ports and guide ramps at the bottom of the kiln, the airflow direction and gas distribution are optimized, solving the problem of low fuel utilization efficiency, achieving more complete combustion and heat transfer, and improving the thermal efficiency of the kiln and the quality of ceramic products.
Patent Information
- Application Number
- CN202520302302.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-24
- Publication Date
- 2026-01-09
- Estimated Expiration
- 2035-02-24
AI Technical Summary
The exhaust port of the existing gas premixed energy-saving kiln is located at the top of the furnace, which leads to incomplete mixing and combustion of fuel and oxygen, low fuel utilization efficiency, large heat loss, and reduced kiln thermal efficiency.
An exhaust port is installed at the bottom of the kiln, and baffles are installed at both ends of the exhaust port. The airflow is guided by the guide slope, so that the fuel and air mixture has a longer combustion path in the kiln. The gas distribution is optimized through the first and second ventilation holes, thereby improving combustion efficiency and heat transfer.
It improves fuel combustion efficiency, reduces unburned emissions, enhances the uniformity and density of ceramic products, reduces harmful emissions, and improves the overall performance of the kiln.
Smart Images
Figure CN223783348U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to kiln technical field especially relates to a gas premixing type energy -conserving kiln. BACKGROUND
[0002] Kiln is used for firing various ceramic products, such as building ceramics, daily use ceramics, art ceramics etc. Gas premixing type energy -conserving kiln is the kiln that adopts the way of premixing fuel gas and air to carry out combustion. Its working principle is to premix fuel and air, then send into kiln to carry out combustion, this way reduces residual oxygen and unburnt material in the combustion process, improves combustion efficiency.
[0003] At present, the exhaust port in the gas premixing type energy -conserving kiln is usually located at the top of the furnace, and the exhaust port located at the top of the kiln may cause the mixing and combustion process of fuel and oxygen in the kiln to be insufficient, and the fuel is discharged out of the kiln without being completely burned, reducing the utilization efficiency of the fuel. The incompletely burned fuel and high temperature flue gas carry a large amount of heat energy, and when this heat energy is directly discharged out of the kiln, it will cause the heat energy loss of the kiln to increase, thereby reducing the thermal efficiency of the kiln. SUMMARY
[0004] In view of the problems existing in the prior art, the utility model provides a gas premixing type energy -conserving kiln, which can effectively solve the problems existing in the prior art.
[0005] The technical scheme of the utility model is:
[0006] According to one aspect of the utility model, comprising: kiln body and the placing rack for placing embryo, the left and right ends of the kiln body inner chamber are respectively provided with fire spout, the fire spout is equipped with premixing burner, the placing rack is set between two fire spouts, the lower end of the kiln body inner chamber is provided with exhaust port, the upper end of the kiln body inner chamber is provided with protrusion downward, the left and right ends of the protrusion are formed with guide slope respectively, the placing rack includes at least two baffles and a plurality of second trays for placing embryo, two baffles are symmetrically arranged at the left and right ends of the kiln body inner chamber, and a plurality of second trays are sequentially and spacedly arranged above two baffles from bottom to top;The lower end of the guide slope is inclined towards the second tray.
[0007] Further, the angles formed by the left and right end faces of the kiln body inner chamber and the two guide slopes are acute angles.
[0008] Further, the acute angle α is 30°-50°.
[0009] Further, the two guide slopes are symmetrically arranged at the two ends of the protrusion.
[0010] Further, the lower end of the kiln body inner chamber is concave downward to form a mounting groove for mounting a placing rack, left and right ends of the mounting groove are respectively provided with a sliding groove, and the exhaust port is located in the mounting groove; the placing rack further comprises a base, the base is inserted into the mounting groove, and left and right ends of the base respectively extend towards the two sliding grooves and are provided with a limiting protruding strip, and the limiting protruding strip is matched with the sliding groove; the base is provided with a ventilation port, and the ventilation port is communicated with the exhaust port.
[0011] Further, the placing rack further comprises a first tray for placing embryos, and a plurality of limiting grooves are arranged at intervals between the two baffles, and the first tray is inserted into one of the limiting grooves.
[0012] Further, the second tray is distributed with a plurality of first ventilation holes.
[0013] Further, the first tray is distributed with a plurality of second ventilation holes.
[0014] Further, the second ventilation hole has a smaller diameter than the first ventilation hole.
[0015] Further, the placing rack further comprises a plurality of supporting rods for supporting the second tray, and the plurality of supporting rods and the plurality of second trays are alternately stacked above the two baffles.
[0016] Compared with the prior art, the technical scheme has the beneficial effects that:
[0017] Firstly, by arranging the exhaust port at the lower end of the kiln and arranging baffles at left and right ends of the exhaust port, the airflow direction in the kiln can be changed, so that the mixture of fuel and air has a longer and more sufficient combustion path in the kiln, and the guide inclined surfaces at the two ends of the protrusions can guide the gas to flow to the placing rack, so that the gas can be more fully burned when flowing through the embryos, reducing unburned substances and improving the combustion efficiency of the fuel; when the gas is fully burned in the kiln and flows through the embryos, more sufficient heat exchange with the embryos can be achieved. This not only helps to speed up the firing speed, but also improves the uniformity and density of the ceramic products; since the fuel can be more fully burned, the emission of harmful substances is reduced. This has important significance for environmental protection and energy saving and emission reduction.
[0018] Secondly, the angles formed by the guide inclined surfaces and the left and right end faces of the kiln body inner chamber are acute angles, which can guide the gas to the placing rack area, and if the angle of the guide inclined surface is too large, the gas cannot be guided to the placing rack area through the guide inclined surface.
[0019] Thirdly, by setting the first air hole and the second air hole, the gas can be more evenly distributed around the embryo, increasing the contact area of the gas and the embryo, thereby improving the combustion efficiency of the gas, and the high-temperature gas produced by combustion directly passes through the first tray and the second tray to exchange heat with the embryo, improving the heat transfer efficiency, which helps to improve the airflow distribution in the kiln, so that the gas flows more evenly in the kiln body, and through the advantages of improving the gas combustion efficiency, optimizing the heat transfer, improving the airflow distribution and enhancing the embryo heating effect, etc., the setting of the first air hole and the second air hole can significantly improve the overall performance of the kiln.
[0020] Fourthly, the second air hole has a smaller diameter than the first air hole, and the second air hole on the first tray can reduce the flux of gas flowing into the exhaust port, so that the mixture of fuel and air stays in the kiln for a longer time, thereby improving the combustion efficiency of the fuel. BRIEF DESCRIPTION OF DRAWINGS
[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.
[0022] Figure 1 It is an explosion structure diagram of the present application;
[0023] Figure 2 It is a three-dimensional structure diagram of the present application;
[0024] Figure 3 It is a plane structure diagram of the present application Figure 1 ;
[0025] Figure 4 It is a plane structure diagram of the present application Figure 2 ;
[0026] Figure 5 It is an explosion structure diagram of the present application, the placing rack;
[0027] Figure 6 It is a three-dimensional structure diagram of the present application, the placing rack;
[0028] As shown in the figure, the kiln body is 1, the protrusion is 11, the guide slope is 111, the mounting groove is 12, the sliding groove is 121, the fire spout is 13, the exhaust port is 14, the kiln door is 2, the placing rack is 3, the base is 31, the air vent is 311, the limiting convex strip is 312, the baffle is 32, the limiting groove is 321, the first tray is 33, the second air vent is 331, the supporting rod is 34, the second tray is 35, the coaming is 351, the first air vent is 352, and the acute angle is alpha. DETAILED DESCRIPTION
[0029] The utility model will be described in further detail below in combination with the drawings and examples. It is particularly pointed out that the following examples are only used for illustrating the utility model, but do not limit the scope of the utility model. Similarly, the following examples are only part of the embodiments of the utility model but not all the embodiments, and all other embodiments obtained by the ordinary skilled in the art without creative labor belong to the scope of the utility model protection.
[0030] As shown in the figure, the kiln body is 1, the protrusion is 11, the guide slope is 111, the mounting groove is 12, the sliding groove is 121, the fire spout is 13, the exhaust port is 14, the kiln door is 2, the placing rack is 3, the base is 31, the air vent is 311, the limiting convex strip is 312, the baffle is 32, the limiting groove is 321, the first tray is 33, the second air vent is 331, the supporting rod is 34, the second tray is 35, the coaming is 351, the first air vent is 352, and the acute angle is alpha. Figures 1 to 6 The utility model provides a gas premixing type energy-saving kiln.
[0031] Please refer to Figure 1 and Figure 2 , including: kiln body 1 and the placing rack 3 for placing embryo, the left and right ends of the inner chamber of kiln body 1 are provided with fire spout 13 respectively, fire spout 13 is equipped with premixing burner (not shown in the figure), and the premixing burner is the direct application of prior art, and the working principle thereof will not be repeated here. It further includes kiln door 2, which is provided on kiln body 1 in an openable and closable manner.
[0032] Please refer to Figures 1 to 6, the placing rack 3 is arranged between the two flame outlets 13, the lower end of the inner chamber of the kiln body 1 is provided with an exhaust port 14, the placing rack 3 comprises at least two baffles 32 and a plurality of second trays 35 for placing embryos, and the edge of each second tray 35 is further provided with a surrounding plate 351, the surrounding plate 351 on each second tray 35 is provided with two, and the two surrounding plates 351 are symmetrically arranged at the two ends of the second tray 35, the two baffles 32 are used for blocking the flame outlets 13 and the exhaust port 14, and the two baffles 32 are symmetrically arranged at the left and right ends of the inner chamber of the kiln body 1, and a plurality of second trays 35 are sequentially and spacedly arranged above the two baffles 32 from bottom to top; specifically, the lower end of the inner chamber of the kiln body 1 is concave downward to form a mounting groove 12 for mounting the placing rack 3, the left and right ends of the mounting groove 12 are respectively provided with sliding grooves 121, and the exhaust port 14 is located in the mounting groove 12; the placing rack 3 further comprises a base 31, the base 31 is inserted into the mounting groove 12, and the left and right ends of the base 31 respectively extend towards the two sliding grooves 121 and are provided with limiting protrusions 312, and the limiting protrusions 312 are matched with the sliding grooves 121; the base 31 is provided with a ventilation port 311, and the ventilation port 311 is in communication with the exhaust port 14. The placing rack 3 further comprises a first tray 33 for placing embryos, a plurality of limiting grooves 321 are arranged between the two baffles 32, and the first tray 33 is inserted into one of the limiting grooves 321. The placing rack 3 further comprises a plurality of supporting rods 34 for supporting the second trays 35, and the plurality of supporting rods 34 and the plurality of second trays 35 are cross-layered and stacked and assembled above the two baffles 32. Specifically, the plurality of supporting rods 34 are sequentially and fixedly inserted into the four corners of the two baffles 32, the four corners of the bottom of the second tray 35 are arranged on the four supporting rods 34 on the two baffles 32, and the four supporting rods 34 are respectively inserted into the bottom of the two surrounding plates 351 of the second tray 35, the plurality of supporting rods 34 are further inserted into the upper ends of the two surrounding plates 351, and the other second trays 35 are sequentially arranged from bottom to top.
[0033] Please refer to Figure 5 and Figure 6 , the second tray 35 is distributed with a plurality of first ventilation holes 352. The first tray 33 is distributed with a plurality of second ventilation holes 331. By arranging the first ventilation holes 352 and the second ventilation holes 331, the gas can be more uniformly distributed around the embryo, the contact area between the gas and the embryo is increased, and the combustion efficiency of the gas is improved, the high-temperature gas generated by combustion directly passes through the first tray 33 and the second tray 35 to exchange heat with the embryo, the heat transfer efficiency is improved, and the gas flow distribution in the kiln is improved, the gas flows more uniformly in the kiln body, the first ventilation holes 352 and the second ventilation holes 331 can significantly improve the overall performance of the kiln through the advantages of improving the gas combustion efficiency, optimizing the heat transfer, improving the gas flow distribution and enhancing the embryo heating effect.
[0034] Please refer to Figure 5 and Figure 6The second air vent 331 on the first tray 33 can reduce the flux of the gas flowing into the exhaust port, so that the mixture of the fuel and the air has a longer time in the kiln, thereby improving the combustion efficiency of the fuel.
[0035] Please refer to Figures 1 to 4 The protrusion 11 is provided with a guide slope 111 at the left and right ends, and the lower end of the guide slope 111 is inclined towards the second tray 35. The guide slope 111 can guide the gas to the shelf 3 area. The angle between the guide slope 111 and the left and right end faces of the inner chamber of the kiln body 1 is an acute angle α. If the angle of the guide slope is too large, the gas cannot be guided to the shelf area through the guide slope, and therefore the acute angle α is 30°-50°; preferably, the acute angle α is 33°-40°. The two guide slopes 111 are symmetrically arranged at the two ends of the protrusion 11.
[0036] Working principle: please refer to Figure 1 and Figure 4 By increasing the pressure of the premixed burner, the premixed gas is introduced from the flame port 13, the baffle 32 blocks between the flame port 13 and the exhaust port 14, the premixed gas reaches the top of the inner chamber of the kiln body 1, the gas flows along the guide slope 111, the second tray 35 and the first tray 33, and then is discharged from the exhaust port 14. The diameter of the second air vent 331 is smaller than that of the first air vent 352, and the second air vent 331 on the first tray 33 can reduce the flux of the gas flowing into the exhaust port, so that the mixture of the fuel and the air has a longer time in the kiln, thereby improving the combustion efficiency of the fuel. The exhaust port 14 is arranged at the lower end of the kiln, and the baffle 32 is arranged at the left and right ends of the exhaust port 14, which can change the direction of the gas flow in the kiln, so that the mixture of the fuel and the air has a longer and more sufficient combustion path in the kiln. In addition, the guide slope 111 at the two ends of the protrusion 11 can guide the gas to flow to the shelf 3, so that the gas can be more fully burned when flowing through the embryo, thereby reducing the unburned matter, thereby improving the combustion efficiency of the fuel.
[0037] The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.
Claims
1. A gas premixing energy saving furnace comprising: Kiln body (1) and the placement frame (3) for placing embryo, the left and right ends of the inner chamber of the kiln body (1) are respectively provided with a fire spout (13), the fire spout (13) is equipped with a premixed burner, the placement frame (3) is arranged between the two fire spouts (13), characterized in that the lower end of the inner chamber of the kiln body (1) is provided with an exhaust port (14), the upper end of the inner chamber of the kiln body (1) is downwardly extended and provided with a protrusion (11), the left and right ends of the protrusion (11) are respectively formed with a guide slope (111), the placement frame (3) comprises at least two baffles (32) and a plurality of second trays (35) for placing embryos, the two baffles (32) are symmetrically arranged at the left and right ends of the inner chamber of the kiln body (1), and a plurality of the second trays (35) are sequentially and spaced apart above the two baffles (32) from bottom to top;The lower end of the guide slope (111) is inclined towards the second tray (35).
2. A gas premixing energy saving furnace as claimed in claim 1, wherein, The angles formed by the two guide slopes (111) and the left and right end faces of the inner chamber of the kiln body (1) are acute angles (α).
3. A gas premixing type energy saving furnace as claimed in claim 2, wherein The acute angle (α) is 30°-50°.
4. A gas premixing type energy-saving furnace according to claim 2 or 3, wherein The two guide slopes (111) are symmetrically arranged at the two ends of the protrusion (11).
5. A gas premixing type energy saving furnace as claimed in claim 1, wherein The lower end of the inner chamber of the kiln body (1) is concave downward to form a mounting groove (12) for mounting the placement frame (3), the left and right ends of the mounting groove (12) are respectively provided with a sliding groove (121), and the exhaust port (14) is located in the mounting groove (12);The placement frame (3) further comprises a base (31), the base (31) is inserted into the mounting groove (12), and the left and right ends of the base (31) are respectively extended and provided with a limiting convex strip (312) towards the two sliding grooves (121), and the limiting convex strip (312) is matched with the sliding groove (121);The base (31) is provided with a ventilation port (311), and the ventilation port (311) is communicated with the exhaust port (14).
6. A gas premixing energy saving furnace as claimed in claim 1, wherein, The placement frame (3) further comprises a first tray (33) for placing embryos, and a plurality of limiting grooves (321) are spaced apart between the two baffles (32), and the first tray (33) is inserted into one of the limiting grooves (321).
7. A gas premixing type energy saving furnace as claimed in claim 6, wherein The second tray (35) is distributed with a plurality of first ventilation holes (352).
8. A gas premixing type energy saving furnace as claimed in claim 7, wherein The first tray (33) is distributed with a plurality of second ventilation holes (331).
9. A gas premixing type energy saving furnace as claimed in claim 8, wherein The aperture of the second ventilation hole (331) is smaller than the aperture of the first ventilation hole (352).
10. A gas premixing energy saving furnace as claimed in claim 1, wherein, The placement frame (3) further comprises a plurality of support rods (34) for supporting the second tray (35), and a plurality of support rods (34) and a plurality of second trays (35) are alternately and stacked assembled above the two baffles (32).