Energy-saving type permanent magnet pre-sintering material combustion device

Abstract

The utility model provides an energy-saving type permanent magnet pre-sintering material combustion device. The energy-saving type permanent magnet pre-sintering material combustion device comprises a burner, a combustion-supporting air pipe and a supporting trolley. The burner comprises a gas inlet elbow and a gas main pipe which are integrally formed and communicate with each other. The combustion-supporting air pipe comprises a combustion-supporting straight pipe and a combustion-supporting conical pipe which are integrally formed and communicate with each other, the combustion-supporting straight pipe is installed on the supporting trolley and covers the gas main pipe, the combustion-supporting conical pipe is located at the end, away from the gas inlet elbow, of the combustion-supporting air pipe, and a combustion-supporting air inlet pipe is further arranged on the combustion-supporting straight pipe. The device is simple in structure and good in using effect, the pore plate type structure on the device can enable gas to be combusted more sufficiently, the air-fuel ratio can be better controlled with the assistance of adjustment of combustion-supporting air, and the energy-saving effect is achieved.

Description

Technical Field

[0001] The present application relates to the field of combustion systems, and in particular to an energy-saving permanent magnet pre-sintered material combustion device. Background Art

[0002] The production process of permanent ferrite iron red pre-sintered material is generally: mixing iron oxide and strontium carbonate - dehydration - rotary kiln sintering - grinding - testing. The burner is the key equipment in the rotary kiln sintering process. Most of its structures currently use straight-through burners, that is, a simple burner with a gas pipeline inside and an air pipeline outside, so that the combustion air and gas are mixed and burned after being ejected from the burner. In the sintering atmosphere of the rotary kiln, excess oxygen is required to ensure a weak oxidizing atmosphere in the kiln, so that the Fe in the raw materials 2+ The compounds can be completely oxidized, therefore, there are certain requirements for the adjustment of the combustion air of the kiln and the determination of the oxygen content.

[0003] At present, the old-fashioned burners of rotary kilns have the following disadvantages: 1. The gas pipeline of the traditional straight-through burner is a single channel, which cannot ensure that the gas inside the channel is fully in contact with the air. The gas may not be fully burned, and excessive gas makes the combustion unstable; 2. The production cost is increased, and the excess gas that is not fully burned is wasted, thereby increasing the energy consumption cost; 3. The manual operation method has safety hazards and cannot effectively control the degree of combustion according to the air-fuel ratio. Utility Model Content

[0004] One of the purposes of the present application is to provide an energy-saving permanent magnet pre-sintering material combustion device, aiming to solve the problem of poor use effect of the old-style burner of the existing rotary kiln.

[0005] The technical solution of this application is:

[0006] An energy-saving permanent magnet pre-sintered material combustion device comprises a burner, a combustion-supporting air duct and a supporting trolley; the burner comprises an air inlet elbow and a gas main pipe which are integrally formed and connected; the combustion-supporting air duct comprises a combustion-supporting straight pipe and a combustion-supporting tapered pipe which are integrally formed and connected, the combustion-supporting straight pipe is installed on the supporting trolley and covered on the gas main pipe, the combustion-supporting tapered pipe is located on one end of the combustion-supporting air duct away from the air inlet elbow, and a combustion-supporting air inlet pipe is also provided on the combustion-supporting straight pipe; the supporting trolley is detachably arranged on the rail steel by a rail clamp.

[0007] As a technical solution of the present application, the gas main pipe and the combustion-supporting straight pipe are arranged concentrically and coaxially.

[0008] As a technical solution of the present application, a diverter orifice is installed on one end of the gas main pipe away from the air inlet elbow, and the diverter orifice is 120 mm away from the free end of the combustion-supporting conical pipe.

[0009] As a technical solution of the present application, the diverter orifice plate includes a circular plate, the diameter of the circular plate is 83 mm, the thickness is 10 mm, and a plurality of diverter circular holes with a diameter of 10 mm are evenly opened on the circular plate, one of the diverter circular holes is located at the center of the circular plate; the other six diverter circular holes are evenly spaced around the center of the circular plate, and the distances to the center of the circular plate are the same.

[0010] As a technical solution of the present application, four connecting round steels are welded at equal intervals on the circumferential side of the end of the gas main pipe away from the air inlet elbow. The length of the four connecting round steels is 13 mm and they are all connected to the diversion orifice plate.

[0011] As a technical solution of the present application, the end of the gas main pipe away from the air inlet elbow is a tapered reducer, the maximum inner diameter of the tapered reducer is 85mm, the minimum inner diameter is 52mm, and the length is 85-100mm.

[0012] As a technical solution of the present application, a spiral guide plate is installed on the outer wall of the gas main pipe.

[0013] As a technical solution of the present application, two flanges are installed on the combustion-supporting straight pipe, and the two flanges are respectively and spaced apart on the ends of the gas main pipe close to the air inlet elbow, and the combustion-supporting air inlet pipe is located between the two flanges.

[0014] As a technical solution of the present application, the supporting trolley is detachably arranged on the rail steel through a rail clamp, and includes an arc-shaped bracket, and the combustion-supporting straight pipe is installed on the arc-shaped bracket; four legs are installed at intervals at the bottom of the arc-shaped bracket, a crossbeam is connected between two adjacent legs, and a rotatable wheel is installed on the bottom of each leg.

[0015] Beneficial effects of this application:

[0016] In the energy-saving permanent magnet pre-sintered material combustion device of the present application, its diverter orifice plate and spiral guide plate can allow the gas to burn more fully, and can better control the air-fuel ratio, thereby achieving energy-saving effects; at the same time, its supporting trolley is equipped with four wheels, which can facilitate the burner to be pulled out of the rotary kiln as a whole, facilitate inspection and maintenance work, and also facilitate the adjustment of its position, and can also prevent the device from being displaced during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the implementation methods of the present application, the drawings required for use in the implementation methods will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 A schematic diagram of an energy-saving permanent magnet pre-sintered material combustion device provided in an embodiment of the present application;

[0019] Figure 2 A schematic diagram of the partial structure of an energy-saving permanent magnet pre-sintering material combustion device provided in an embodiment of the present application;

[0020] Figure 3 A schematic diagram of a diversion orifice plate provided in an embodiment of the present application;

[0021] Figure 4 A schematic diagram of a first angle of a diversion orifice plate provided in an embodiment of the present application.

[0022] Icons: 1-inlet elbow; 2-gas main pipe; 3-combustion-supporting straight pipe; 4-combustion-supporting conical pipe; 5-diversion orifice plate; 6-connecting round steel; 7-conical reducer; 8-spiral guide plate; 9-flange; 10-arc bracket; 11-support leg; 12-crossbeam; 13-wheel; 14-combustion-supporting air inlet pipe. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0025] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0026] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0027] In addition, in the present application, unless otherwise clearly specified and limited, the first feature being above or below the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, the first feature being above, above, and above the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being below, below, and below the second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0028] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0029] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "disposed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0030] Example:

[0031] Please refer to Figure 1 , with reference Figure 2The present application provides an energy-saving permanent magnet pre-sintered material combustion device, which mainly includes a burner, a combustion-supporting air duct and a supporting trolley; wherein the burner includes an air intake elbow 1 and a gas main pipe 2 that are integrally formed and connected; the combustion-supporting air duct includes a combustion-supporting straight pipe 3 and a combustion-supporting conical pipe 4 that are integrally formed and connected, the combustion-supporting straight pipe 3 is installed on the supporting trolley and covered on the gas main pipe 2, in addition, two flanges 9 are installed on the combustion-supporting straight pipe 3, and the two flanges 9 are respectively and spaced apart on the ends of the gas main pipe 2 close to the air intake elbow 1; the combustion-supporting conical pipe 4 is located on one end of the combustion-supporting air duct away from the air intake elbow 1, and a combustion-supporting air inlet pipe 14 is also provided on the combustion-supporting straight pipe 3, the combustion-supporting air inlet pipe 14 is located between the two flanges 9, and together with the two flanges 9 form a T-shaped elbow; the supporting trolley is detachably arranged on the rail steel through a rail clamp. The gas main pipe 2 and the combustion-supporting air pipe are both provided with regulating valves and flow meters. The regulating valves can be used to switch on and off the airflow in the pipeline, and the flow meters can be used for metering, and the gas and air are proportioned according to the air-fuel ratio to ensure more complete combustion. The overall length of the combustion-supporting air pipe can be adjusted to a certain extent according to the size of the kiln. After ensuring that the burner can be installed in the hole position of the kiln head as a whole, the length of the combustion-supporting air pipe can be welded with a flange 9 and other structures that match the combustion-supporting air pipe.

[0032] Among them, its supporting trolley includes an arc-shaped bracket 10, which can be made of L60 angle steel as a whole, which can ensure that the burner does not produce radial vibration during use; the combustion-supporting straight pipe 3 is installed on the arc-shaped bracket 10; four legs 11 are installed at intervals at the bottom of the arc-shaped bracket 10, and a crossbeam 12 is welded between two adjacent legs 11, and a rotatable wheel 13 is installed on the bottom of each leg 11, which can facilitate the burner to be pulled out of the rotary kiln as a whole, and is convenient for inspection and maintenance; at the same time, the energy-saving permanent magnetic pre-burned material combustion device is placed on the rail steel as a whole, which is convenient for adjustment, and a rail card can also be set at the bottom of the leg 11 to prevent the energy-saving permanent magnetic pre-burned material combustion device from being displaced during use. When the furnace is shut down and the burner needs to be repaired, the flange connections are removed, and the burner is placed on the supporting trolley as a whole. The wheels 13 of the trolley can be placed on the rail steel for easy movement. During normal use, the support trolley is fixed by a track card and will not be displaced. When it needs to be moved, the burner head can be pulled out of the rotary kiln manually or with a hand winch for inspection and maintenance.

[0033] It should be noted that the gas main pipe 2 and the combustion-supporting straight pipe 3 are concentrically and coaxially arranged, and the end of the gas main pipe 2 away from the air inlet elbow 1 is a tapered reducer 7, which is made of 310S stainless steel, with a maximum inner diameter of 85mm, a minimum inner diameter of 52mm, and a length of 85-100mm; at the same time, a spiral guide plate 8 is installed on the outer wall of the gas main pipe 2, which can make the air intake air flow spiral, and the combustion-supporting air can be a rotating airflow through the spiral guide plate 8, so that the airflow and the gas are mixed more evenly and the combustion is more complete. In addition, four connecting round steels 6 are welded at equal intervals on the circumferential side of the end of the gas main pipe 2 away from the air inlet elbow 1, and the length of the four connecting round steels 6 is 13mm and they are all connected to the diverter orifice plate 5, and the diverter orifice plate 5 and the free end of the combustion-supporting tapered pipe 4 are alternately 120mm.

[0034] Specifically, the diverter orifice plate 5 includes a circular plate with a diameter of 83 mm and a thickness of 10 mm, and a plurality of diverter circular holes with a diameter of 10 mm are evenly opened on the circular plate, one of which is located at the center of the circular plate; the other six diverter circular holes are evenly spaced around the center of the circular plate, and the distances to the center of the circular plate are the same. Therefore, the burner head is a perforated plate structure, which can change the original gas flow from one beam to six beams, so that the gas and air are in more sufficient contact.

[0035] The manufacturing method of the diverter orifice plate 5 is as follows: 7 diverter circular holes with a diameter of 10 mm are drilled on a circular plate with a diameter of 83 mm and a thickness of 10 mm, wherein one diverter circular hole is located at the center of the circular plate, and the centers of the other six diverter circular holes are located at six equal points of a concentric circle with a diameter of 50 mm on the circular plate. After the drilling is completed, the diverter orifice plate 5 is completed. After the diverter orifice plate 5 is completed, a distance of 13 mm is set between it and the gas main pipe 2, and round steels are respectively welded at four equal points of the outer wall of the gas main pipe 2, and the round steels are welded to the diverter orifice plate 5. The end of the gas main pipe 2 away from the air inlet elbow 1 is a tapered reducer 7, and the maximum inner diameter of the tapered reducer 7 is 85 mm, the minimum inner diameter is 52 mm, and the length is 85-100 mm, which is more suitable. After ensuring the above dimensions, the overall length of the gas main pipe 2 should be longer than the length of the combustion-supporting air duct. The end of the gas main pipe 2 not welded with the diverter orifice plate 5 can extend from the straight head of the T-elbow of the combustion-supporting air duct, and then be welded to the flange 9 (select the flange 9 with an inner hole of φ85mm), and then configure the corresponding flange for welding according to the position and specifications of the gas medium transmission pipeline.

[0036] It should be added that the burner of the present application is suitable for combustion devices using natural gas as the combustion medium. If the combustion medium is coal gas or other gaseous medium, the rotary kiln burner needs to be adjusted accordingly based on the original basic size.

[0037] In summary, in the energy-saving permanent magnet pre-burned material combustion device of the present application, its diverter orifice plate 5 and spiral guide plate 8 can allow the gas to burn more fully, can better control the air-fuel ratio, and achieve energy-saving effects; at the same time, its supporting trolley is equipped with four wheels 13, which can facilitate the burner to be pulled out of the rotary kiln as a whole, facilitate inspection and maintenance work, and also facilitate the adjustment of its position, and can also prevent the device from being displaced during use.

[0038] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An energy-saving permanent magnet pre-sintering material combustion device, characterized in that: It includes a burner, a combustion-supporting air duct and a supporting trolley; the burner includes an air inlet elbow and a gas main pipe that are integrally formed and connected; the combustion-supporting air duct includes a combustion-supporting straight pipe and a combustion-supporting conical pipe that are integrally formed and connected, the combustion-supporting straight pipe is installed on the supporting trolley and covered on the gas main pipe, the combustion-supporting conical pipe is located on one end of the combustion-supporting air duct away from the air inlet elbow, and a combustion-supporting air inlet pipe is also provided on the combustion-supporting straight pipe; the supporting trolley is detachably arranged on the rail steel by a rail clip.

2. The energy-saving permanent magnet pre-sintering material combustion device according to claim 1 is characterized in that: The gas main pipe is concentrically and coaxially arranged with the combustion-supporting straight pipe.

3. The energy-saving permanent magnet pre-sintering material combustion device according to claim 1 is characterized in that: A flow splitting orifice plate is installed on one end of the gas main pipe away from the air inlet elbow, and the flow splitting orifice plate is spaced 120 mm from the free end of the combustion-supporting conical pipe.

4. The energy-saving permanent magnet pre-sintering material combustion device according to claim 3 is characterized in that: The diverter orifice plate comprises a circular plate, the diameter of the circular plate is 83 mm, the thickness is 10 mm, and a plurality of diverter circular holes with a diameter of 10 mm are evenly opened on the circular plate, one of the diverter circular holes is located at the center of the circular plate; the other six diverter circular holes are evenly spaced around the center of the circular plate, and the distances to the center of the circular plate are the same.

5. The energy-saving permanent magnet pre-sintering material combustion device according to claim 3 is characterized in that: Four connecting round steels are welded at equal intervals on the circumferential side of one end of the gas main pipe away from the gas inlet elbow. The lengths of the four connecting round steels are all 13 mm and are all connected to the diversion orifice plate.

6. The energy-saving permanent magnet pre-sintering material combustion device according to claim 1 is characterized in that: One end of the gas main pipe away from the air inlet elbow is a tapered reducer, the maximum inner diameter of the tapered reducer is 85 mm, the minimum inner diameter is 52 mm, and the length is 85-100 mm.

7. The energy-saving permanent magnet pre-sintering material combustion device according to claim 1 is characterized in that: A spiral guide plate is installed on the outer wall of the gas main pipe.

8. The energy-saving permanent magnet pre-sintering material combustion device according to claim 1 is characterized in that: Two flanges are installed on the combustion-supporting straight pipe, and the two flanges are respectively sleeved on the end of the gas main pipe close to the air inlet elbow at intervals, and the combustion-supporting air inlet pipe is located between the two flanges.

9. The energy-saving permanent magnet pre-sintering material combustion device according to claim 1 is characterized in that: The supporting trolley comprises an arc-shaped bracket, and the combustion-supporting straight pipe is installed on the arc-shaped bracket; four legs are installed at intervals at the bottom of the arc-shaped bracket, a crossbeam is connected between two adjacent legs, and a rotatable wheel is installed on the bottom of each leg.

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