Mold temperature controller of air preheater

Abstract

The utility model relates to the technical field of mold temperature controllers, in particular to a mold temperature controller of an air preheater, which comprises a furnace body, a heat exchange coil pipe is arranged in the furnace body, a burner is mounted at one end of the furnace body, the heat exchange coil pipe comprises an inner coil pipe and an outer coil pipe, and two return flues are formed in the furnace body by the inner coil pipe and the outer coil pipe. The top of one end of the heat exchange coil is connected with an oil outlet pipe, the side face of the other end of the heat exchange coil is connected with an oil return pipe, the top of the furnace body is provided with an air preheater, and the top of one end of the air preheater is connected with a smoke outlet pipe. According to the mold temperature controller of the air preheater, the air preheater is introduced, exhaust smoke waste heat is used for preheating combustion-supporting air, and the exhaust smoke temperature is effectively reduced to a low level, so that the heat energy loss is greatly reduced, and the energy utilization efficiency is improved. The preheated air can reach the working temperature more quickly in the combustion process, the combustion efficiency is improved, the overall energy utilization efficiency is further improved, and energy consumption can be remarkably reduced after long-term operation.

Description

Technical Field

[0001] The utility model relates to the technical field of mold temperature controllers, in particular to a mold temperature controller of an air preheater. Background Art

[0002] In the field of mold temperature controller technology, traditional mold temperature controllers typically use gas combustion to heat an organic carrier (thermal oil) to provide heat energy. However, such equipment often faces the problem of excessively high exhaust temperatures. Excessively high exhaust temperatures not only waste energy, but also increase operating costs and potentially have adverse impacts on the environment.

[0003] While existing mold temperature controllers can meet heating process requirements to a certain extent, they still need to be improved in terms of energy efficiency, operating costs, production efficiency, and product quality. In particular, traditional mold temperature controllers often lack effective heat recovery mechanisms, resulting in a large amount of heat energy being lost with flue gas emissions. This not only reduces the overall thermal efficiency of the system but also limits further improvements in production efficiency and product quality. Utility Model Content

[0004] The purpose of the present utility model is to provide a mold temperature controller for an air preheater to solve the problem that traditional mold temperature controllers proposed in the above background technology often lack an effective heat recovery mechanism, resulting in a large amount of heat energy being lost with flue gas emissions, which not only reduces the thermal efficiency of the overall system, but also limits the further improvement of production efficiency and product quality.

[0005] To achieve the above-mentioned purpose, the utility model provides a mold temperature controller for an air preheater, comprising a furnace body, a heat exchange coil is arranged inside the furnace body, a burner is installed at one end of the furnace body, the heat exchange coil comprises an inner coil and an outer coil, the inner coil and the outer coil form two return flues inside the furnace body, an oil outlet pipe is connected to the top of one end of the heat exchange coil, and an oil return pipe is connected to the side of the other end of the heat exchange coil, an air preheater is installed on the top of the furnace body, and a smoke outlet pipe is connected to the top of one end of the air preheater.

[0006] Preferably, a base is installed at the bottom of the furnace body.

[0007] Preferably, a fire extinguishing port is provided at one end of the furnace body, and a fire viewing port is provided at the other end.

[0008] Preferably, a plurality of heat exchange tubes are horizontally installed inside the air preheater, a partition is horizontally installed in the middle of the air preheater, an opening is provided between one end of the partition and the air preheater, a smoke inlet bin and a smoke outlet bin are provided at the end of the air preheater away from the opening, the partition divides the plurality of heat exchange tubes into two parts, the smoke inlet bin is connected to the lower heat exchange tube, the smoke outlet bin is connected to the upper heat exchange tube, the bottom of the air preheater is connected to the hot air outlet, the top of the air preheater is connected to the blower, the top of the smoke outlet bin is connected to the smoke outlet pipe, and the bottom end of the smoke inlet bin is connected to the flue outlet end of the furnace body.

[0009] Preferably, the bottom end of the hot air outlet is connected to the air inlet of the burner through a hot air pipeline.

[0010] Preferably, an electric control box is installed on the top of the furnace body.

[0011] Preferably, a circulating pump is installed on the top of the furnace body, the input end of the circulating pump is connected to the circulating pump inlet, the output end of the circulating pump is connected to the circulating pump outlet, one end of the circulating pump is connected to the circulating pump interface, and the outer end of the circulating pump interface is connected to the return oil pipe through a pipeline.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] By integrating an air preheater into the mold temperature controller, this system utilizes exhaust gas waste heat to preheat the combustion air, effectively lowering the exhaust gas temperature to a lower level. This significantly reduces heat loss and improves energy efficiency. The preheated air reaches operating temperature more quickly during combustion, improving combustion efficiency and, in turn, overall energy efficiency. This significantly reduces energy consumption over the long term.

[0014] In addition, a circulating pump forces the heat transfer oil to circulate in the liquid phase, transferring heat to one or more heat-consuming devices. After being consumed by the heat-consuming devices, the oil passes through the circulating pump again, returns to the mold temperature controller for heating, absorbs heat again, and transfers it to the heat-consuming devices. This cycle repeats continuously, achieving continuous heat transfer and raising the temperature of the heated object to meet the heating process requirements. This ensures that the heat-consuming devices continuously obtain the required thermal energy and meets the process temperature and high-precision temperature control requirements set in the production process. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a side structural diagram of the present utility model;

[0017] Figure 3This is a schematic diagram of the top structure of the utility model;

[0018] The meaning of each number in the figure is:

[0019] 1. Furnace body; 11. Base; 12. Fire extinguishing port; 13. Fire viewing port; 2. Heat exchange coil; 21. Oil return pipe; 22. Oil outlet pipe; 3. Air preheater; 31. Blast port; 32. Hot air outlet; 33. Heat exchange tube; 34. Smoke inlet; 35. Smoke outlet; 36. Partition; 4. Smoke outlet pipe; 5. Burner; 6. Hot air pipeline; 7. Electric control box; 8. Circulation pump; 81. Circulation pump inlet; 82. Circulation pump outlet; 83. Circulation pump interface. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] The utility model provides a mold temperature controller for an air preheater, such as Figure 1-Figure 3 As shown, the furnace body 1 includes a heat exchange coil 2 disposed within the furnace body 1. A burner 5 is mounted at one end of the furnace body 1. The heat exchange coil 2 comprises an inner coil and an outer coil, which form two return flues within the furnace body 1. An oil outlet pipe 22 is connected to the top of one end of the heat exchange coil 2, and an oil return pipe 21 is connected to the side of the other end of the heat exchange coil 2. An air preheater 3 is mounted on the top of the furnace body 1, and a smoke outlet pipe 4 is connected to the top of one end of the air preheater 3. The heat exchange coil 2 disposed within the furnace body 1, comprising an inner coil and an outer coil, forms two return flues within the furnace body 1. This design allows for sufficient heat exchange between the flue gases within the furnace body, effectively transferring the heat energy of the fuel to the thermal oil, thereby improving heat energy conversion efficiency. The oil outlet pipe 22 is connected to the top of one end of the heat exchange coil 2, and the oil return pipe 21 is connected to the side of the other end. This layout ensures a stable circulation of thermal oil within the heat exchange coil 2, allowing heat to be evenly and efficiently transferred to the heat-consuming equipment, improving the heating effect of the mold temperature controller. An air preheater 3 is installed on the top of the furnace body 1, utilizing waste heat from the exhaust gas to preheat the combustion air. This design not only lowers the exhaust gas temperature and reduces heat loss, but also improves combustion efficiency, further enhancing the energy efficiency of the mold temperature controller.

[0022] In this embodiment, a base 11 is installed at the bottom of the furnace body 1 to ensure that the bottom support of the furnace body 1 is stable.

[0023] Specifically, a fire extinguishing port 12 is provided at one end of the furnace body 1, and a fire viewing port 13 is provided at the other end for convenient observation of the internal combustion conditions.

[0024] Furthermore, a plurality of heat exchange tubes 33 are horizontally installed inside the air preheater 3, and a partition 36 is horizontally installed in the middle of the air preheater 3. An opening is provided between one end of the partition 36 and the air preheater 3. A smoke inlet bin 34 and a smoke outlet bin 35 are provided at the end of the air preheater 3 away from the opening. The partition 36 divides the plurality of heat exchange tubes 33 into two parts, the smoke inlet bin 34 is connected to the lower heat exchange tube 33, and the smoke outlet bin 35 is connected to the upper heat exchange tube 33. The bottom of the air preheater 3 is connected to the hot air outlet 32, the top of the air preheater 3 is connected to the blast port 31, the top of the smoke outlet bin 35 is connected to the smoke outlet pipe 4, and the bottom end of the smoke inlet bin 34 is connected to the flue outlet end of the furnace body 1. The heat of the flue gas after heat exchange is further utilized through the air preheater 3.

[0025] Furthermore, the bottom end of the hot air outlet 32 is connected to the air inlet of the burner 5 through the hot air pipe 6, so that the preheated air can be added to the burner 5 to quickly increase the combustion temperature.

[0026] Furthermore, an electric control box 7 is installed on the top of the furnace body 1 for performing electric control operations of the furnace body 1 .

[0027] Furthermore, a circulation pump 8 is installed on the top of the furnace body 1. The input end of the circulation pump 8 is connected to the circulation pump inlet 81, the output end of the circulation pump 8 is connected to the circulation pump outlet 82, and one end of the circulation pump 8 is connected to the circulation pump interface 83. The outer end of the circulation pump interface 83 is connected to the return oil pipe 21 through a pipeline. The operation of the circulation pump 8 allows the heat transfer oil to absorb heat from the furnace body 1 through the heat exchange coil 2 and enter the heat-using equipment. After being consumed by the heat-using equipment, it re-enters the circulation pump 8 through the circulation pump inlet 81 and is then output from the circulation pump outlet 82 and returned to the heat-using equipment through the pipeline, thereby achieving continuous circulation of the heat transfer oil. After multiple cycles, the heat transfer oil flows back from the circulation pump interface 83 to the furnace body 1 for heating. This cycle repeats, achieving continuous heat transfer. The circulation of the heat transfer oil allows heat to be transferred to the heat-using equipment more evenly, improves the heat transfer efficiency, and ensures that the heat-using equipment can obtain a stable and continuous heat energy supply.

[0028] When the mold temperature controller of the air preheater of the present invention is in use, burner 5 first ignites fuel at one end of furnace body 1, generating high-temperature flue gas. This flue gas flows within furnace body 1 and undergoes heat exchange through heat exchange coil 2. Heat exchange coil 2, consisting of an inner coil and an outer coil, forms two return flue ducts within furnace body 1, allowing the flue gas to undergo sufficient heat exchange within the furnace body. During this process, thermal oil enters heat exchange coil 2 through return oil pipe 21 and absorbs heat from the flue gas, thereby transferring thermal energy. After absorbing heat, the thermal oil is discharged through oil outlet pipe 22 to heat-using equipment for heat utilization.

[0029] The heated thermal oil then flows out of the heat exchange coil 2 through the oil return pipe 21 and into the heat-consuming equipment for heating. Simultaneously, the circulating pump 8 begins operating, drawing the thermal oil from the heat-consuming equipment through the circulating pump inlet 81 and discharging it through the circulating pump outlet 82, returning it to the heat-consuming equipment through the pipeline, thus achieving continuous circulation of the thermal oil. After multiple cycles, the thermal oil flows back into the furnace body 1 through the circulating pump interface 83 for further heating. This cycle repeats, achieving continuous and stable heat transfer.

[0030] Furthermore, an air preheater 3 mounted on top of the furnace body 1 utilizes waste heat from the exhaust gas to preheat the combustion air. Exhaust gas enters the air preheater 3 through a smoke inlet hopper 34 and undergoes heat exchange through a number of heat exchange tubes 33. The utilized exhaust gas is then discharged through a smoke outlet hopper 35 and a smoke outlet pipe 4, reducing the exhaust gas temperature. Furthermore, the preheated air is connected to the air inlet of the burner 5 via a hot air duct 6, improving combustion efficiency.

[0031] During the entire operation, the bottom base 11 of the furnace body 1 provides stable support, while the fire extinguishing port 12 and the fire viewing port 13 facilitate observation and operation of the combustion situation inside the furnace body 1. The electric control box 7 is used to perform electric control operations of the furnace body 1 to achieve automatic control.

[0032] Finally, it should be noted that the burner 5 and other electronic components in this embodiment are all universal standard parts or components known to those skilled in the art. Their structures and principles can be known to those skilled in the art through technical manuals or through conventional experimental methods. In the idle area of this device, all the above-mentioned electrical components are connected by wires respectively. The specific connection means should refer to the working sequence between the electrical components in the above-mentioned working principle to complete the electrical connection, which are all well-known technologies in the art.

[0033] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A mold temperature controller for an air preheater, comprising a furnace body (1), characterized in that: A heat exchange coil (2) is provided inside the furnace body (1), a burner (5) is installed at one end of the furnace body (1), the heat exchange coil (2) comprises an inner coil and an outer coil, the inner coil and the outer coil forming two return flues inside the furnace body (1), the top of one end of the heat exchange coil (2) is connected to an oil outlet pipe (22), and the side of the other end of the heat exchange coil (2) is connected to an oil return pipe (21), an air preheater (3) is installed on the top of the furnace body (1), and the top of one end of the air preheater (3) is connected to a smoke outlet pipe (4).

2. The mold temperature controller of the air preheater according to claim 1, characterized in that: A base (11) is installed at the bottom of the furnace body (1).

3. The mold temperature controller of the air preheater according to claim 1, characterized in that: A fire extinguishing port (12) is provided at one end of the furnace body (1), and a fire viewing port (13) is provided at the other end.

4. The mold temperature controller of the air preheater according to claim 1, characterized in that: A plurality of heat exchange tubes (33) are horizontally installed inside the air preheater (3), a partition (36) is horizontally installed in the middle of the air preheater (3), an opening is provided between one end of the partition (36) and the air preheater (3), a smoke inlet bin (34) and a smoke outlet bin (35) are provided at the end of the air preheater (3) away from the opening, the partition (36) divides the plurality of heat exchange tubes (33) into upper and lower parts, the smoke inlet bin (34) is connected to the lower heat exchange tube (33), the smoke outlet bin (35) is connected to the upper heat exchange tube (33), the bottom of the air preheater (3) is connected to a hot air outlet (32), the top of the air preheater (3) is connected to an air blast port (31), the top of the smoke outlet bin (35) is connected to the smoke outlet pipe (4), and the bottom of the smoke inlet bin (34) is connected to the flue outlet end of the furnace body (1).

5. The mold temperature controller of the air preheater according to claim 4, characterized in that: The bottom end of the hot air outlet (32) is connected to the air inlet of the burner (5) through a hot air pipeline (6).

6. The mold temperature controller of the air preheater according to claim 1, characterized in that: An electric control box (7) is installed on the top of the furnace body (1).

7. The mold temperature controller of the air preheater according to claim 1, characterized in that: A circulation pump (8) is installed on the top of the furnace body (1); the input end of the circulation pump (8) is connected to a circulation pump inlet (81); the output end of the circulation pump (8) is connected to a circulation pump outlet (82); one end of the circulation pump (8) is connected to a circulation pump interface (83); the outer end of the circulation pump interface (83) is connected to an oil return pipe (21) through a pipeline.

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