Heat energy circulation preheating kiln

Abstract

The utility model discloses a heat energy circulation preheating kiln, which belongs to the technical field of ceramic production equipment and comprises a first kiln chamber and a second kiln chamber, a first exhaust chimney is arranged at the top end of the first kiln chamber, a second exhaust chimney is arranged at the top end of the second kiln chamber, a first exhaust valve is arranged in the first exhaust chimney, and a second exhaust valve is arranged in the second exhaust chimney. A gas guide channel for communicating the first exhaust chimney with the second exhaust chimney is arranged between the first exhaust chimney and the second exhaust chimney, a gas guide assembly is arranged in the gas guide channel, and through exhaust valves of the chimneys, the gas guide channel connected with the kilns, a channel valve of the gas guide channel and a fan arranged in the middle of the gas guide channel, when one gas kiln conducts firing, gas can be exhausted through the chimneys normally, and the energy consumption is reduced. And when the waste gas is burnt to a certain temperature, the chimney valve is closed, and the channel valve and the fan are opened, so that the hot gas is discharged to the other kiln chamber, the effect of preheating the other kiln chamber by using the waste gas is achieved, and the heat utilization is better applied to the gas kiln.

Description

Technical Field

[0001] The utility model discloses a heat energy circulation preheating kiln, belonging to the technical field of ceramic production equipment. Background Art

[0002] A kiln is a furnace used to fire ceramics and sculptures or to fuse enamel to the surface of metal objects. It is usually made of bricks and stones and can be made into various sizes according to needs. It can be operated by combustible gas, oil or electricity. Electric kilns are easier to control temperature than kilns using combustible gas and oil. The temperature inside the kiln is measured with a pyrometer or temperature cone, which can be seen through a peephole.

[0003] Regarding the kiln, the existing patent number is 201410239000.7, which is a Nixing pottery double-body kiln, including a control cabinet and two kilns arranged in parallel. Both kilns are provided with ventilation ports, and the two ventilation ports are connected through hot air ducts; each kiln is also provided with an air exchange port, and a fan is provided on the air exchange port, and the fans are respectively connected to the output end of the control cabinet; each kiln is provided with a heating element and a thermocouple, and the heating element is respectively connected to the output end of the control cabinet, and the thermocouple is respectively connected to the input end of the control cabinet through a transmitter.

[0004] The above patent can preheat the blank in the kiln by program control by pumping the gas from the high-temperature cooling kiln to the low-temperature kiln, make full use of the waste heat of the high-temperature gas, improve the thermal utilization rate of the kiln, and achieve the goal of saving electricity. However, the above patent is aimed at electric kilns, which do not produce exhaust gas themselves. Therefore, the fan is only set for heat dissipation and does not need to be turned on during the heating stage. Since gas kilns produce exhaust gas, it is necessary to turn on the fan to exhaust during heating. Therefore, the above patent cannot be directly applied to gas kilns. Moreover, the above patent requires a kiln to reach the cooling stage before it can be carried out. There is still room for improvement in efficiency. Therefore, in order to solve this problem, the utility model proposes a new solution. Utility Model Content

[0005] The utility model aims to provide a heat energy circulation preheating kiln in order to solve the above problems.

[0006] The utility model achieves the above-mentioned purpose through the following technical scheme: a thermal energy circulation preheating kiln, comprising a kiln chamber one and a kiln chamber two, wherein an exhaust chimney one is arranged at the top of the kiln chamber one, and an exhaust chimney two is arranged at the top of the kiln chamber two, an exhaust valve one is arranged in the exhaust chimney one, and an exhaust valve two is arranged in the exhaust chimney two, an air guide channel connecting the exhaust chimney one and the exhaust chimney two is arranged between the exhaust chimney one and the exhaust chimney two, and an air guide component is arranged in the air guide channel.

[0007] Preferably, the air guide component includes channel valve one, channel valve two and an air guide fan, the air guide fan is arranged in the middle position of the air guide channel, the channel valve one is arranged on the side close to exhaust chimney one, and the channel valve two is arranged on the side close to exhaust chimney two.

[0008] Preferably, the exhaust valve 1, the exhaust valve 2, the channel valve 1 and the channel valve 2 are all electrically controlled valves.

[0009] Preferably, the air guide fan is a high temperature resistant axial flow fan.

[0010] Preferably, the kiln chamber one and the kiln chamber two are both configured as gas-fired kiln chambers.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. Through the exhaust valve of the chimney, the air guide channel connected to the kiln, the channel valve of the air guide channel and the fan arranged in the middle of the air guide channel, one of the gas kilns can be exhausted normally through the chimney during firing. When it reaches a certain temperature, the chimney valve is closed, and the channel valve and the fan are opened to discharge the hot air to the other kiln chamber, thereby achieving the effect of preheating the other kiln chamber with the heat energy that would have been discharged from the chimney, and better applying the heat to the gas kiln.

[0013] 2. When the temperature of one kiln chamber reaches 800-900 degrees, the channel valve and fan can be opened to preheat the other kiln chamber. After the two kiln chambers are preheated to almost the same temperature, the channel valve and fan are closed, and the chimney valve of the hot kiln chamber is opened. The preheated kiln chamber starts to ignite and heat up. There is no need to wait until one of the kiln chambers needs to cool down before starting heat transfer and exchange, which further increases production efficiency.

[0014] 3. When kiln chamber 1 preheats kiln chamber 2 and the temperature drops, the kiln car of kiln chamber 1 can be pulled out and a new kiln car and embryo body can be loaded. When the temperature of kiln chamber 2 rises to 800-900 degrees, the channel valve can be opened and the fan can be reversed to preheat kiln chamber 1 with the newly loaded embryo body. This cycle can achieve the effect of energy saving and efficiency improvement, and it is estimated that 30-50% of energy consumption can be saved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model.

[0016] Figure numerals: 1. Kiln chamber one; 2. Kiln chamber two; 3. Exhaust chimney one; 4. Exhaust chimney two; 5. Exhaust valve one; 6. Exhaust valve two; 7. Air guide channel; 8. Channel valve one; 9. Channel valve two; 10. Air guide fan. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. In the description of the utility model, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, which are only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0018] A heat cycle preheats the kiln, such as Figure 1 As shown, it includes a kiln chamber 1 and a kiln chamber 2, and both kiln chamber 1 and kiln chamber 2 are configured as gas kiln chambers, heating is achieved by igniting gas, and an exhaust chimney 3 is provided at the top of the kiln chamber 1, and an exhaust chimney 24 is provided at the top of the kiln chamber 22. At present, gas kilns use more liquefied gas, coal gas or natural gas as fuel, which will produce useless exhaust gas after combustion. Therefore, the exhaust chimney 3 and the exhaust chimney 24 can be used to discharge these exhaust gases. Compared with electric kilns, the setting of chimneys is also necessary for gas kilns.

[0019] An air guide channel 7 is arranged between the exhaust chimney 1 3 and the exhaust chimney 2 4. The arrangement of the air guide channel 7 enables the exhaust chimney 1 3 and the exhaust chimney 2 4 to be connected, so that the gases inside the two can circulate with each other; and an exhaust valve 1 5 is arranged in the exhaust chimney 1 3, and an exhaust valve 2 6 is arranged in the exhaust chimney 2 4. The two exhaust valves can respectively control the opening and closing of the two chimneys. Therefore, when the exhaust valve 1 5 is closed, the gas generated in the kiln chamber 1 can only enter the kiln chamber 2 2 from the air guide channel 7. Similarly, when the exhaust valve 2 6 is closed, the gas generated in the kiln chamber 2 2 can only enter the kiln chamber 1 from the air guide channel 7.

[0020] An air guide component is arranged in the air guide channel 7, which specifically includes a channel valve 1 8, a channel valve 2 9 and an air guide fan 10, wherein the air guide fan 10 is arranged in the middle section of the air guide channel 7 and adopts a high-temperature resistant axial flow fan, while the channel valve 1 8 is arranged on the side close to the exhaust chimney 1 3, and the channel valve 2 9 is arranged on the side close to the exhaust chimney 2 4. The channel valve 1 8 and the channel valve 2 9 can respectively control the connection and closure of the air guide channel 7 with the exhaust chimney 1 3 and the exhaust chimney 2 4, so as to control the flow direction of the gas in the kiln chamber, and the air guide fan 10 can drive and accelerate the flow rate of the gas in the two kiln chambers by forward and reverse rotation, so that the gas in one kiln chamber quickly enters the other kiln chamber, and the exhaust valve 1 5, the exhaust valve 2 6, the channel valve 1 8 and the channel valve 2 9 are all electrically controlled valves, and the opening and closing time are set by the electronic control program.

[0021] The working process of the utility model is as follows:

[0022] First, the embryos are placed in kiln chamber 1 and kiln chamber 2 respectively, then kiln chamber 1 is ignited to start firing, and exhaust valve 5 is opened to keep the exhaust chimney 3 connected with the outside to ensure the exhaust of exhaust gas, and at this time, channel valve 18 is closed, channel valve 29 is closed, and exhaust valve 26 is closed; when the temperature of kiln chamber 1 rises to about 800 degrees, exhaust valve 5 is closed, channel valve 18 and channel valve 29 are opened, and air guide fan 10 is turned on to make it rotate forward, and the speed can be adjusted from small to large according to actual conditions, and the exhaust gas of about 800 degrees is blown from kiln chamber 1 into kiln chamber 2, so that the temperature in kiln chamber 2 continues to rise to achieve the preheating effect; when the temperature of kiln chamber 1 reaches the highest, the power of air guide fan 10 can be increased to speed up The gas circulation speed is measured, and the temperature of the kiln chamber 2 is measured at the same time. When the temperature of the kiln chamber 2 is appropriate, the channel valve 29 is closed first to ensure the separation of the kiln chamber 2 and the air guide fan 10 to prevent the flowing exhaust gas from affecting the ignition of the kiln chamber 2, and then the exhaust valve 26 is opened, and the kiln chamber 2 is ignited, so that the kiln chamber 2 can be fired normally; at the same time, the channel valve 18 and the air guide fan 10 can also be closed, and the exhaust valve 5 is opened, so that the exhaust chimney 3 is reopened, so that the unfinished embryos in the kiln chamber 1 can continue to be fired, or the finished embryos can start to dissipate heat and cool down. After the kiln chamber 1 is out of porcelain, a new embryo is loaded. When the kiln chamber 2 is heated to about 800, the above steps can be repeated to achieve the purpose of cyclic operation preheating.

[0023] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0024] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A heat energy circulation preheating kiln, characterized in that: The invention comprises a kiln chamber 1 (1) and a kiln chamber 2 (2), wherein the top of the kiln chamber 1 (1) is provided with an exhaust chimney 1 (3), the top of the kiln chamber 2 (2) is provided with an exhaust chimney 2 (4), the exhaust chimney 1 (3) is provided with an exhaust valve 1 (5), the exhaust chimney 2 (4) is provided with an exhaust valve 2 (6), an air guide channel (7) is provided between the exhaust chimney 1 (3) and the exhaust chimney 2 (4) to connect the two, and an air guide component is provided in the air guide channel (7).

2. A heat energy circulation preheating kiln according to claim 1, characterized in that: The air guide component comprises a channel valve 1 (8), a channel valve 2 (9) and an air guide fan (10), wherein the air guide fan (10) is arranged at the middle section of the air guide channel (7), the channel valve 1 (8) is arranged at a side close to an exhaust chimney 1 (3), and the channel valve 2 (9) is arranged at a side close to an exhaust chimney 2 (4).

3. A heat energy circulation preheating kiln according to claim 2, characterized in that: The exhaust valve 1 (5), the exhaust valve 2 (6), the channel valve 1 (8) and the channel valve 2 (9) are all electrically controlled valves.

4. A heat energy circulation preheating kiln according to claim 2, characterized in that: The air guide fan (10) is a high temperature resistant axial flow fan.

5. The heat energy circulation preheating kiln according to claim 1, characterized in that: The kiln chamber 1 (1) and the kiln chamber 2 (2) are both configured as gas-fired kiln chambers.

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