Combustion chamber for easy transport and assembly

Abstract

The present application relates to the technical field of grain drying, and particularly relates to a combustion chamber convenient to transport and assemble. The combustion chamber comprises a burner, a horizontally placed outer cylinder, a base welded at the bottom of the outer cylinder, an equal-length inner cylinder coaxially fixed in the inner part of the outer cylinder, a connecting rod arranged between the outer periphery of the outer cylinder and the inner cylinder, a screen mesh arranged at one end of the outer cylinder, an end plate arranged at one end of the inner cylinder and outside the screen mesh, a nozzle of the burner penetrating through the end plate and the screen mesh and extending into the inner cylinder, and a heat preservation pipeline connected to the other end of the outer cylinder. The base, the inner cylinder and the outer cylinder are prefabricated in a split manner, which not only saves materials compared with traditional combustion chambers, but also is convenient to transport. The assembled combustion chamber saves time and labor, and the manual construction time is short, which can ensure the construction period. The combustion medium in the inner cylinder is provided with a heat source by the burner, hot air is output through the heat preservation pipeline, the refractory layer prevents the damage of high temperature to the inner wall of the combustion chamber, the cold air door adjusts the supply temperature, and the air tunnel cools the nozzle of the burner located in the inner part of the end plate.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of grain drying, in particular to a combustion chamber convenient for transportation and assembly. BACKGROUND

[0002] In recent years, with the continuous improvement of mechanization, the time of harvesting period is greatly shortened, and the traditional natural airing has been unable to meet the market requirements. If the moisture of raw grain is not reduced to the safe moisture range in time, it will cause great loss to the grain. The grain dryer can produce a large amount of hot air in a short time, which can kill insect eggs through high-temperature treatment and completely solve the problem of grain drying.

[0003] The grain dryer is provided with an air inlet corner box with an open bottom in the machine box. The combustion medium is combusted in the combustion chamber and transmits hot air into the air inlet corner box. The grain is lowered with the hot air to achieve the purpose of drying.

[0004] The traditional grain drying tower combustion chamber is mostly self-built brick and concrete house type and box type. A large amount of materials are needed during masonry, which needs to be transported for many times and needs to be temporarily made on site. The manual construction takes a long time, which will cause the extension of the construction period. SUMMARY

[0005] The present application aims to solve the above problems, thereby providing a combustion chamber convenient for transportation and assembly which can shorten the construction period.

[0006] The present application solves the problem by adopting the following technical scheme:

[0007] A combustion chamber convenient for transportation and assembly, comprising a burner, further comprising a horizontally placed outer cylinder, a base is welded at the bottom of the outer cylinder, an equal-length inner cylinder is fixed coaxially in the inner part of the outer cylinder, a connecting rod is arranged between the outer periphery of the outer cylinder and the inner cylinder, a screen is arranged at one end of the outer cylinder, an end plate is arranged at one end of the inner cylinder and outside the screen, a nozzle of the burner penetrates the end plate and the screen and extends into the inner cylinder, and a heat preservation pipeline is connected to the other end of the outer cylinder.

[0008] The present application adopting the above technical scheme has the following outstanding features compared with the prior art:

[0009] The base, the inner cylinder and the outer cylinder are prefabricated in parts, which not only saves materials compared with the traditional combustion chamber, but also is convenient for transportation. The assembly type assembly saves time and labor, the manual construction time is short, the construction period can be guaranteed, the combustion medium in the inner cylinder provides heat source through the burner, and the hot air is output through the heat preservation pipeline.

[0010] As a preferred embodiment, the further technical scheme of the present application is:

[0011] The base comprises a bottom plate, H-shaped leg supports are fixed on the top of the bottom plate along the length direction, the vertical rods of the leg supports are welded on both sides of the bottom of the base, the horizontal rods of the leg supports are welded with the bottom end of the base, and reinforcing rods are welded between the vertical rods of adjacent leg supports.

[0012] The connecting rod comprises an angle steel, the two ends of the angle steel are welded with a pad plate and abut between the outer cylinder and the inner cylinder, the opposite surfaces of the pad plate are welded with a fixing nut respectively, the outer side of the outer cylinder and the inner side of the inner cylinder are respectively penetrated with a fixing bolt, and the end of the fixing bolt is penetrated with the pad plate and screwed with the fixing nut.

[0013] The end plate is provided with a wind tunnel along the circumferential direction and located at the outer periphery of the nozzle of the burner.

[0014] The end plate is provided with an adjusting cover plate on the outer side and located on each wind tunnel.

[0015] The inner wall of the inner cylinder is provided with a refractory layer.

[0016] The heat preservation pipeline is provided with a cold air door.

[0017] The inner cylinder is provided with a fireproof column near one side of the heat preservation pipeline. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a schematic diagram of the main view structure section of the embodiment of the application;

[0019] Figure 2 It is a schematic diagram of the internal side view structure of the outer cylinder and the inner cylinder of the embodiment of the application;

[0020] Figure 3 It is a schematic diagram of the main view structure of the heat preservation pipeline of the embodiment of the application;

[0021] Figure 4 It is a schematic diagram of the main view structure of the connecting rod of the embodiment of the application;

[0022] Figure 5 It is a schematic diagram of the side view structure of the base of the embodiment of the application;

[0023] Figure 6 It is a schematic diagram of the main view structure of the base of the embodiment of the application;

[0024] In the figure, the marks are: burner 1, outer cylinder 2, inner cylinder 3, refractory layer 31, fireproof column 32, connecting rod 4, angle steel 41, pad plate 42, fixing nut 43, end plate 5, wind tunnel 51, adjusting cover plate 52, screen 53, heat preservation pipeline 6, cold air door 61, base 7, bottom plate 71, leg support 72, reinforcing rod 73. EMBODIMENT

[0025] The application will be further described in connection with the following examples whose purpose is merely to better understand the application and therefore, the examples do not limit the scope of protection of the application.

[0026] The combustion chamber is easy to transport and assemble, which comprises a burner 1, an inlet of natural gas is connected to the burner 1 through a pipeline, and further comprises an outer cylinder 2 horizontally placed, a base 7 welded at the bottom of the outer cylinder 2, and an inner cylinder 3 coaxially fixed in the inner part of the outer cylinder 2 and of equal length. Taking the combustion chamber equipped for a 1000-ton corn drying tower as an example, the outer cylinder 2 and the inner cylinder 3 are 5200 mm long, a connecting rod 4 is arranged between the outer periphery of the outer cylinder 2 and the inner cylinder 3, the outer cylinder 2 and the inner cylinder 3 are assembled and connected through the connecting rod 4, a screen 53 is arranged at one end of the outer cylinder 2, an end plate 3 is arranged at one end of the inner cylinder 3 and outside the screen 53, a nozzle of the burner 1 penetrates through the end plate 5 and the screen 53 and extends into the inner cylinder 3, a heat preservation pipeline 6 is connected to the other end of the outer cylinder 2, an air induction fan is connected to the outer end of the heat preservation pipeline 6, the heat preservation pipeline 6 is 1200 mm long, the outer cylinder 2 and the heat preservation pipeline 6 are connected through flanges, and the screen 53 prevents sundries from entering the outer cylinder 2 and the inner cylinder 3.

[0027] The base 7 comprises a bottom plate 71 fixedly connected to a cement foundation, H-shaped leg supports 72 fixedly arranged at the top of the bottom plate 71 along the length direction, the leg supports 72 being welded to the bottom plate 71, the vertical rods of the leg supports 72 being welded to the two sides of the bottom part of the base 7, the horizontal rods of the leg supports 72 being welded to the bottommost end of the base 7, and reinforcing rods 73 being welded between the vertical rods of adjacent leg supports 72. The base 7 is prefabricated, temporarily assembled after being transported to the site, and then the outer cylinder 2 is placed on the base 7 for welding and fixing, thereby saving time and effort.

[0028] The connecting rod 4 comprises an angle steel 41, gaskets 42 welded to the two ends of the angle steel 41 and abutting against the outer cylinder 2 and the inner cylinder 3, and fixing nuts 43 welded to the opposite surfaces of the gaskets 42, respectively, and the outer side of the outer cylinder 2 and the inner side of the inner cylinder 3 are respectively penetrated by fixing bolts, the end parts of the fixing bolts are penetrated through the gaskets 42 and screwed with the fixing nuts 43, the outer cylinder 2 and the inner cylinder 3 are connected through the connecting rod 4 and the fixing nuts 43, the gaskets 42 and the fixing nuts 43 are prefabricated on the connecting rod 4, and holes are punched at the specified positions of the outer cylinder 2, the inner cylinder 3 and the gaskets 42, and the fixing bolts are screwed with the opposite fixing nuts 43 during on-site assembly.

[0029] The end plate 5 is provided with a wind tunnel 51 in the circumferential direction of the nozzle of the burner 1, which serves as an air inlet for combustion and cools the nozzle of the burner 1 inside the end plate 5; when the burner 1 is normally combusting, the flame temperature at the nozzle of the burner 1 can reach more than 1,000 degrees Celsius, and since the circulating fan of the burner 1 continuously removes the high-temperature flue gas, the burner 1 and the combustion chamber can be kept below a certain temperature; if the burner 1 and the circulating fan are suddenly closed when the furnace is stopped, the burner 1 and the combustion chamber will have a sharp temperature rise since they are not cooled, which will accelerate the damage to the burner 1 and the combustion chamber.

[0030] An adjusting cover plate 52 is arranged on the outer side of the end plate 5 and located above each wind tunnel; the adjusting cover plate 52 is movably penetrated by a locking bolt, and the end plate 5 is provided with a bolt hole opposite to the locking bolt; when adjustment is needed, the adjusting cover plate 52 is adjusted in position, and then the locking bolt is tightened to clamp and limit the adjusting cover plate 52; the air inlet of the wind tunnel 51 is adjusted by rotating the adjusting cover plate 52.

[0031] A refractory layer 31 is arranged on the inner wall of the inner cylinder 3, and a steel bar hook is prearranged on the inner wall of the inner cylinder 3, a steel plate net is laid, and high-aluminum refractory cement is poured to form a refractory material composed of high-aluminum fine aggregate, medium aggregate and large aggregate; the thickness of the refractory material is 80 mm, which effectively prevents the damage to the inner wall of the combustion chamber caused by excessively high temperature.

[0032] A cold air door 61 is arranged on the heat preservation pipeline 6, which can be opened when the temperature is too high to adjust the supply temperature during combustion; in addition, there will be some residual waste gas in the combustion chamber after the burner is stopped, and the cold air door 61 of the heat preservation pipeline 6 and the wind tunnel 51 of the end plate are opened at the same time to achieve the effect of taking away the residual waste gas in the combustion chamber by the external atmosphere, so that the waste gas is discharged outside the combustion chamber.

[0033] A fire barrier 32 is arranged on one side of the inner cylinder 3 close to the heat preservation pipeline 6, which is built with refractory bricks to block the flame and disturb the flow.

[0034] The base 7, the inner cylinder 3 and the outer cylinder 2 are prefabricated in separate parts, which not only saves materials compared with traditional combustion chambers, but also is more convenient to transport; the assembled type assembly saves time and labor, the artificial construction time is short, the construction period can be guaranteed, the combustion medium in the inner cylinder 3 is heated by the burner 1, the hot air is output through the heat preservation pipeline 6, the refractory layer 31 prevents the damage to the inner wall of the combustion chamber caused by excessively high temperature, the cold air door 61 adjusts the supply temperature, and the wind tunnel 51 cools the nozzle of the burner 1 inside the end plate 5.

[0035] The above only describes the preferred embodiments of the present application, and is not intended to limit the scope of the present application; any equivalent changes made according to the content of the present application and the drawings are included in the scope of the present application.

Claims

1. A combustion chamber for ease of transportation assembly comprising a burner, characterised in that: The outer cylinder is horizontally placed, a base is welded at the bottom of the outer cylinder, an inner cylinder with the same length is coaxially fixed in the inner part of the outer cylinder, a connecting rod is arranged between the outer periphery of the outer cylinder and the inner cylinder, a screen is arranged at one end of the outer cylinder, an end plate is arranged at one end of the inner cylinder and outside the screen, a nozzle of the burner penetrates the end plate and the screen and extends into the inner cylinder, a heat preservation pipeline is connected to the other end of the outer cylinder, a wind tunnel is annularly arranged on the end plate and outside the nozzle of the burner, an adjusting cover plate is arranged on the outer side of the end plate and above each wind tunnel, and a fireproof column is arranged in the inner cylinder and close to one side of the heat preservation pipeline. The base comprises a bottom plate, H-shaped leg supports are fixed on the top of the bottom plate along the length direction at intervals, the vertical rods of the leg supports are welded at both sides of the bottom of the base, the horizontal rods of the leg supports are welded to the bottommost end of the base, and reinforcing rods are welded between the vertical rods of adjacent leg supports. The connecting rod comprises an angle steel, a pad plate is welded to each end of the angle steel and abuts between the outer cylinder and the inner cylinder, a fixing nut is welded to the opposite surface of each pad plate, a fixing bolt is respectively penetrated through the outer side of the outer cylinder and the inner side of the inner cylinder, and the end of the fixing bolt is screwed with the fixing nut and penetrates the pad plate. A cold air door is arranged on the heat preservation pipeline.

2. The transportably assembled combustor of claim 1, wherein: A refractory layer is arranged on the inner wall of the inner cylinder.

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