CN210141704U

CN210141704U - Environment-friendly fuel type air heating heat exchanger

Info

Publication number: CN210141704U
Application number: CN201920646204.0U
Authority: CN
Inventors: 刘宏伟
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-05-07
Filing date: 2019-05-07
Publication date: 2020-03-13
Anticipated expiration: 2029-05-07

Abstract

An environment-friendly fuel oil type air heating heat exchanger relates to the technical field of agricultural equipment and solves the problems that the existing heat exchanger equipment adopts coal as fuel, the heating speed is low, the heat transfer efficiency is low, the maintenance cost is high due to the easy damage of the heat exchanger, and the like; one end of the combustion chamber is communicated with the heat exchange chamber, the other end of the combustion chamber penetrates through the smoke chamber to be connected with a combustion interface, and the combustion interface is arranged at the other end of the outer shell; the smoke returning pipe is arranged in parallel with the heating pipe, and two ends of the smoke returning pipe are respectively communicated with the heat exchange chamber and the smoke chamber; two ends of the turbulent flow smoke pipe are respectively communicated with the smoke chamber and the smoke exhaust chamber; this neotype heat exchanger is direct with the suction fan intercommunication of hot-blast mouth and drying tower, reduces the heat energy loss. The novel steel pipe is durable, can be used for more than five years without maintenance, reduces the maintenance cost and improves the production efficiency.

Description

Environment-friendly fuel type air heating heat exchanger

Technical Field

The utility model relates to an agricultural equipment technical field, concretely relates to environmental protection fires oil type air heating heat exchanger.

Background

At present, in agricultural production equipment, the heat exchanger of a dryer is mostly used for drying grains, drying wood and the like, the existing combustion raw materials mostly use coal as a main material, and the defects existing in the process of adopting coal as the combustion raw materials are as follows: firstly, the heating speed is low, and the heat transfer efficiency is low; secondly, the cost is high due to high coal consumption, and simultaneously, discharged gas causes air pollution and influences the environment. The heat exchange tube is often deformed and damaged due to thermal stress, needs to be replaced frequently, wastes time and labor, and causes high maintenance cost and reduced production efficiency; fourthly, the flue gas contains a large amount of dust, so that a heat exchange gas pipeline is easily blocked, the heat transfer efficiency is reduced, and the drying effect is poor; fifthly, the dust of the heat exchange tube is difficult to remove, the labor intensity is increased, and the personnel cost is increased.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve current heat exchanger equipment and adopt the coal to exist the rate of heating slowly as fuel, heat transfer efficiency is low and the heat exchanger fragile leads to problem such as cost of maintenance height, provides an environmental protection fires oil type air heating heat exchanger.

The environment-friendly fuel oil type air heating heat exchanger comprises an outer shell, an air inlet arranged on the outer shell, a hot air port arranged at one end of the outer shell, and a smoke exhaust chamber, a turbulent flow smoke pipe, a smoke return pipe, a smoke chamber, a combustion chamber and a heat exchange chamber which are arranged in the outer shell;

the combustion chamber is a heating pipe, one end of the heating pipe is communicated with the heat exchange chamber, the other end of the heating pipe penetrates through the smoke chamber to be connected with a combustor connecting port, and the combustor connecting port is arranged at the other end of the outer shell; the smoke return pipe is arranged in parallel with the heating pipe, and two ends of the smoke return pipe are respectively communicated with the heat exchange chamber and the smoke chamber; two ends of the turbulent flow smoke pipe are respectively communicated with the smoke chamber and the smoke exhaust chamber; the heat exchange chamber is a cylinder and consists of a plurality of heat exchange air inlet pipes, an inner circular plate, an outer circular plate and a stainless steel plate, wherein the inner circular plate is provided with a through hole connected with the heat exchange air inlet pipes, a through hole connected with the smoke return pipe and a central hole connected with the heating pipe, and the outer circular plate is provided with a through hole connected with the heat exchange air inlet pipes; the both ends of every heat transfer intake pipe are connected with the heat transfer intake pipe through-hole on interior plectane and the excircle board respectively, the internal surface of corrosion resistant plate and the outer periphery welding of interior plectane and outer plectane.

The utility model has the advantages that: the heat exchanger adopt environmental protection boiler oil as the burning material, reduced the pollution to the environment, rate of heating is fast simultaneously, heat transfer efficiency is high, it is effectual to dry.

The heat exchanger, direct with the suction fan intercommunication of hot-blast mouthful and drying tower, reduce the heat energy loss.

The utility model discloses the heat exchanger, durable can use more than five years not necessarily maintain, when having reduced cost of maintenance, has improved production efficiency.

Drawings

Fig. 1 is a schematic diagram of an external structure of an environment-friendly fuel type air heating heat exchanger according to the present invention;

fig. 2 is an internal cross-sectional view of the environment-friendly fuel type air heating heat exchanger according to the present invention;

FIG. 3 is a cross-sectional view A-A of FIG. 2;

FIG. 4 is a cross-sectional view B-B of FIG. 2;

FIG. 5 is a schematic structural view of the environment-friendly fuel type air heating heat exchanger of the present invention when drying wood;

FIG. 6 is a schematic view of the internal structure of the smoke chamber when the environment-friendly fuel type air heating heat exchanger of the present invention dries wood;

fig. 7 is another schematic structural diagram of the present invention.

Detailed Description

In the first embodiment, the first embodiment is described with reference to fig. 1 to 6, the fuel-oil type air heating heat exchanger is composed of an inner part welded by a stainless steel pipe and a stainless steel plate, and an outer shell is made of carbon steel; the concrete composition is as follows: the device comprises an outer shell, wherein two air inlets 13 are symmetrically arranged on the outer shell, a hot air port 10 is arranged at one end of the outer shell 14, and a smoke exhaust chamber 8, a turbulent flow smoke pipe 11, a smoke return pipe 4, a smoke chamber 7, a combustion chamber 5 and a heat exchange chamber 6 are arranged in the outer shell 14; the combustion chamber 5 is a heating pipe, one end of the heating pipe is communicated with the heat exchange chamber 6, the other end of the heating pipe penetrates through the smoke chamber 7 to be connected with the combustor connector 1, and the combustor connector 1 is arranged at the other end of the outer shell; the smoke return pipe 4 is arranged in parallel with the heating pipe, and two ends of the smoke return pipe 4 are respectively communicated with the heat exchange chamber 6 and the smoke chamber 7; two ends of the turbulent smoke tube 11 are respectively communicated with the smoke chamber 7 and the smoke exhaust chamber 8.

Referring to fig. 3 and 4, the flue gas chamber 7 is composed of a plurality of gas inlet pipes 7-1, an inner plate 7-2, an outer plate 7-3 and a stainless steel plate; the inner plate 7-2 is provided with a central hole connected with the heating pipe, a through hole connected with the air inlet pipe, a through hole connected with the smoke return pipe 4 and a through hole connected with the turbulent flow smoke pipe 11; the outer plate 7-3 is provided with a through hole connected with the air inlet pipe 7-1, a through hole 1-1 connected with the burner connecting port 1 and a through hole 2-1 of the fire observation mirror, and the fire observation mirror 2 is arranged on the outer shell 14 and is positioned on one side of the burner connecting port 1. The outer end faces of the inner plate 7-2 and the outer plate 7-3 are welded with the inner surface of a stainless steel plate, and the burner connector 1 and the fire observation mirror 2 are respectively welded through a through hole 1-1 connected with the burner connector 1 on the outer plate 7-3 and a through hole 2-1 of the fire observation mirror through a stainless steel conduction pipe. The fire observation mirror 2 is arranged, so that the combustion state of the combustion chamber 5 can be observed conveniently.

Referring to fig. 5 and fig. 6 to explain the present embodiment, the heat exchange chamber 6 is a cylinder and is composed of a plurality of heat exchange air inlet pipes 6-1, an inner circular plate 6-2, an outer circular plate 6-3 and a stainless steel plate, the inner circular plate 6-2 is provided with a through hole connected with the heat exchange air inlet pipe, a through hole connected with the smoke return pipe 4 and a central hole connected with the heating pipe, and the outer circular plate 6-3 is provided with a through hole connected with the heat exchange air inlet pipe 6-1; two ends of each heat exchange air inlet pipe 6-1 are respectively connected with heat exchange air inlet pipe through holes in the inner circular plate 6-2 and the outer circular plate 6-3, and the inner surface of the stainless steel plate is welded with the outer circumferential surfaces of the inner circular plate and the outer circular plate.

In the embodiment, the central axes of the heat exchange air inlet pipe 6-1 and the air inlet pipe 7-1 are on the same straight line; the air inlet pipe 7-1, the heat exchange air inlet pipe 6-1, the smoke returning pipe 4 and the turbulent flow smoke pipe 11 are arranged in parallel. The heating pipe, the air inlet pipe 7-1, the heat exchange air inlet pipe 6-1, the smoke return pipe 4 and the turbulent flow smoke pipe 11 are all stainless steel pipes, and the diameter of the heating pipe is 580 mm; the diameters of the air inlet pipe 7-1, the heat exchange air inlet pipe 6-1, the smoke return pipe 4 and the turbulent flow smoke pipe 11 are the same and are all 76 mm.

The heat exchange air inlet pipe 6-1 and the air inlet pipe 7-1 can be arranged in multiple layers, and the turbulent smoke pipe 11 is arranged in multiple layers. According to the size of the heat exchanger, three layers of turbulent flow smoke pipes 11 can be welded on the inner plate 7-2, six, seven or eight stainless steel pipes can be arranged on each layer, and the total number ranges from 18 to 32. The number of the smoke returning pipes 4 is 24-36.

In the embodiment, the explosion-proof door 12 is further included, and the explosion-proof door 12 is installed on the heat exchange chamber 6. Avoiding the heat exchange chamber from exploding due to the fault of the burner and causing certain damage to the heat exchanger.

In the embodiment, the heat-insulating layer 3 is arranged on the outer shell of the heat exchanger, and the heat-insulating layer 3 is made of aluminum silicate and is 5cm thick.

The working principle of the heat exchanger described in the embodiment is as follows: firstly, a suction fan of a drying tower is communicated with a hot air port 10 of a heat exchanger; then, the burner is ignited, the combustion is carried out in the combustion chamber 5, the heat after the combustion enters the heat exchanger 6, the heat energy in the heat exchanger is sucked by a suction fan of the drying tower through the hot air port 10, and the drying of the grains and other materials is realized. In the combustion process, cold air enters through the air inlet 13, heat exchange is carried out on internal hot air through the heat exchange air inlet pipe 6-1 and the air inlet pipe 7-1, generated smoke enters the smoke chamber 7 through the smoke return pipe 4, passes through the smoke chamber 7, enters the smoke exhaust chamber through the turbulent flow smoke pipe 11, and is finally exhausted through the chimney 9.

In the second embodiment, the heat exchanger structure in the wood drying process is described with reference to fig. 7, and the temperature of the heat exchanger structure in the wood drying process only needs to be about 60 degrees, so that the burbling smoke pipe 11 can be omitted, and the smoke chamber 7 is directly communicated with the smoke exhaust chamber 8, thereby reducing the production cost and realizing the heat energy transfer.

Claims

1. Environmental protection fuel type air heating heat exchanger, characterized by: the device comprises an outer shell, an air inlet (13) arranged on the outer shell (14), a hot air port (10) arranged at one end of the outer shell, and a smoke exhaust chamber (8), a turbulent flow smoke pipe (11), a smoke return pipe (4), a smoke chamber (7), a combustion chamber (5) and a heat exchange chamber (6) which are arranged in the outer shell (14);

the combustion chamber (5) is a heating pipe, one end of the heating pipe is communicated with the heat exchange chamber (6), the other end of the heating pipe penetrates through the smoke chamber (7) to be connected with the combustor connector (1), and the combustor connector (1) is arranged at the other end of the outer shell (14);

the smoke return pipe (4) is arranged in parallel with the heating pipe, and two ends of the smoke return pipe (4) are respectively communicated with the heat exchange chamber (6) and the smoke chamber (7);

two ends of the turbulent flow smoke pipe (11) are respectively communicated with the smoke chamber (7) and the smoke exhaust chamber (8);

the heat exchange chamber (6) is a cylinder and consists of a plurality of heat exchange air inlet pipes (6-1), an inner circular plate (6-2), an outer circular plate (6-3) and a stainless steel plate, wherein the inner circular plate (6-2) is provided with a through hole connected with the heat exchange air inlet pipes, a through hole connected with the smoke return pipe and a central hole connected with the heating pipe, and the outer circular plate (6-3) is provided with a through hole connected with the heat exchange air inlet pipes; the two ends of each heat exchange air inlet pipe (6-1) are respectively connected with the heat exchange air inlet pipe through holes in the inner circular plate (6-2) and the outer circular plate (6-3), and the inner surface of the stainless steel plate is welded with the outer circumferential surfaces of the inner circular plate and the outer circular plate.

2. The environment-friendly fuel oil type air heating heat exchanger according to claim 1, wherein: still include sight glass (2), sight glass (2) set up on the shell body, and are located one side of combustor connector (1).

3. The environment-friendly fuel oil type air heating heat exchanger according to claim 2, wherein:

the smoke chamber (7) consists of a plurality of air inlet pipes (7-1), an inner plate (7-2), an outer plate (7-3) and a stainless steel plate; the inner plate (7-2) is provided with a central hole connected with the heating pipe, a through hole connected with the air inlet pipe, a through hole connected with the smoke return pipe (4) and a through hole connected with the turbulent flow smoke pipe (11); the outer plate (7-3) is provided with a through hole connected with the air inlet pipe (7-1), a through hole connected with the burner connecting port (1) and a through hole of the fire observation mirror, and the outer end faces of the inner plate (7-2) and the outer plate (7-3) are welded with the inner surface of the stainless steel plate.

4. The environment-friendly fuel oil type air heating heat exchanger according to claim 3, wherein: the central axes of the heat exchange air inlet pipe (6-1) and the air inlet pipe (7-1) are on the same straight line; the air inlet pipe (7-1), the heat exchange air inlet pipe (6-1), the smoke return pipe (4) and the turbulent flow smoke pipe (11) are arranged in parallel.

5. The environment-friendly fuel oil type air heating heat exchanger according to claim 4, wherein: the heating pipe, the air inlet pipe (7-1), the heat exchange air inlet pipe (6-1), the smoke return pipe (4) and the turbulent flow smoke pipe (11) are all stainless steel pipes, and the diameter of the heating pipe is 580 mm; the diameters of the air inlet pipe (7-1), the heat exchange air inlet pipe (6-1), the smoke return pipe (4) and the turbulent flow smoke pipe (11) are the same and are all 76 mm.

6. The environment-friendly fuel oil type air heating heat exchanger according to claim 1, wherein: the heat exchange chamber is characterized by further comprising an explosion door (12), wherein the explosion door (12) is installed on the heat exchange chamber (6).

7. The environment-friendly fuel oil type air heating heat exchanger according to claim 1, wherein: the heat exchange air inlet pipe (6-1) and the air inlet pipe (7-1) are arranged in multiple layers, and the turbulent flow smoke pipe (11) is arranged in multiple layers.

8. The environment-friendly fuel oil type air heating heat exchanger according to claim 1, wherein: the number of the smoke returning pipes (4) is 24-36.

9. The fuel type air heating heat exchanger according to claim 1, characterized in that: and an insulating layer (3) is arranged on the outer wall of the heat exchanger.

10. The environment-friendly fuel oil type air heating heat exchanger according to claim 9, wherein: the heat-insulating layer (3) is made of aluminum silicate and is 5cm thick.