Inverted airflow guide device for V19 gas burner of suspension roaster

Abstract

The utility model relates to the technical field of alumina production roasting control, in particular to a suspension roaster V19 gas burner inverted type airflow guiding device which comprises a base and a gas furnace body arranged on the base, a gas burner is arranged on the top of the gas furnace body, a gas outlet part is arranged on the gas burner, and a gas outlet is arranged on the gas outlet part. An installation assembly is arranged outside the gas burner and the gas furnace body, an airflow guiding mechanism is arranged on the installation assembly, the airflow guiding mechanism is installed at the external connecting position of the gas furnace body and the gas burner through the installation assembly, and the airflow guiding mechanism is arranged on the gas furnace body through the airflow guiding mechanism. The high-temperature flame jetted from the gas outlet part of the gas burner is jetted upwards instead of being jetted all around, so that the high-temperature flame just jetted from the gas outlet part is effectively prevented from scouring a hearth lining around a mounting part of a gas furnace body and the gas burner and being ablated on the mounting part, and the service life of the gas burner is further prolonged; meanwhile, the overall operation cost of the system is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of aluminum oxide production roasting control, in particular to an inverted airflow guide device for a V19 gas burner of a suspension roasting furnace. Background Art

[0002] At present, the Bayer process is mainly used in the production of alumina. After the ore with sodium hydroxide is ground to a certain fineness, it is dissolved under high temperature and high pressure to form a sodium aluminate solution. After cooling and reducing pressure, adding flocculants, the sodium aluminate solution and red mud are separated in the sedimentation tank. After filtering and plate cooling, the sodium aluminate solution is added and stirred in the decomposition tank due to supersaturation to precipitate aluminum hydroxide. After washing, the product aluminum hydroxide is obtained. In order to obtain the final product of a-Al2O3 that is not hygroscopic, it is necessary to roast aluminum hydroxide at 900-10000C in the roasting system to remove its attached water. The fuel is mainly natural gas or coal gas, which is transported to the roasting furnace through a pipeline, and then sprayed into the furnace for combustion through a V19 coal gas burner installed vertically and extending about 30cm into the inner chamber of the furnace wall.

[0003] Since the V19 gas burner extends into the furnace for a short distance as a whole, the first-layer gas holes in the conical part of the gas burner spray the gas directly onto the inner wall lining of the furnace around the installation site of the V19 gas burner and burn on the surface of the lining. The lining in this area is easily damaged due to long-term exposure to high temperature and strong airflow, which shortens the replacement cycle of the lining, increases the operating cost of the system, and reduces the effective utilization rate of gas combustion. Utility Model Content

[0004] In view of the above problems, an inverted airflow guide device for a V19 gas burner of a suspended roasting furnace is provided to change the spray direction of the high-temperature flame ejected from the gas outlet of the gas burner, so that the high-temperature flame first ejected from the gas outlet is directed toward the center of the furnace and burns at an installation position far away from the gas burner and the gas furnace body.

[0005] In order to solve the problems of the prior art, the utility model provides an inverted airflow guide device for a V19 gas burner of a suspended roasting furnace, comprising a base and a gas furnace body arranged on the base, a gas burner is arranged on the top of the gas furnace body, an air outlet is arranged on the gas burner, a mounting assembly is arranged outside the gas burner and the gas furnace body, and an airflow guide mechanism is arranged on the mounting assembly.

[0006] Preferably, the airflow guide mechanism includes a first airflow guide plate, a second airflow guide plate and a locking piece; the first airflow guide plate is arranged on one side of the gas burner; the second airflow guide plate is arranged on the side of the gas burner away from the first airflow guide plate, and the bottoms of the first airflow guide plate and the second airflow guide plate are both arranged on the mounting assembly.

[0007] Preferably, locking members are provided on both sides of the first airflow guiding plate and the second airflow guiding plate.

[0008] Preferably, the locking member includes a fixing block, a locking bolt and a locking nut; there are two fixing blocks, which are symmetrically arranged on the same side of the first airflow guide plate and the second airflow guide plate; one end of the locking bolt passes through the two fixing blocks in sequence and extends outward; the locking nut is arranged on one end of the locking bolt passing through the two fixing blocks.

[0009] Preferably, the mounting assembly includes a mounting plate and fixing bolts; the mounting plate has two ring-shaped outer portions which are sleeved on the connection between the gas stove body and the gas burner, and the tops of the two mounting plates are respectively abutted against the bottoms of the corresponding first airflow guide plate and the second airflow guide plate; there are a plurality of fixing bolts, and the two mounting plates are fixed to the gas stove body by the fixing bolts.

[0010] Preferably, a card slot is provided at the top of the two mounting plates, a card block is provided at the bottom of the first airflow guide plate and the second airflow guide plate, and the two card blocks are respectively inserted into the corresponding card slots provided in the two mounting plates.

[0011] Preferably, the gas outlet portion includes a large gas outlet and a small gas outlet; the large gas outlet is arranged at the top of the gas burner; and the small gas outlet has a plurality of small gas outlets which are respectively arranged on the side walls of the gas burner.

[0012] Preferably, a plurality of positioning pins arranged in a ring shape are provided at one end of the gas burner close to the gas furnace body, and a plurality of positioning holes for corresponding positioning pins to be inserted are provided on the top of the gas furnace body.

[0013] Compared with the prior art, the utility model has the following beneficial effects: the utility model installs the airflow guiding mechanism to the external connection between the gas stove body and the gas burner through the setting of the installation component; through the setting of the airflow guiding mechanism, the direction of the high-temperature flame ejected from the gas outlet of the gas burner is changed from spraying toward the surroundings to spraying upwards, thereby effectively preventing the high-temperature flame just ejected from the gas outlet from scouring the furnace lining around the gas stove body and the gas burner installation position and ablating the position, thereby increasing the service life of the gas burner and reducing the overall operating cost of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The present invention is a schematic diagram of the overall structure of an inverted airflow guide device for a V19 gas burner of a suspension roasting furnace.

[0015] Figure 2 A schematic diagram of the partial structure of the inverted airflow guide device of the V19 gas burner of a suspension roasting furnace Figure 1 .

[0016] Figure 3 It is a partial structural schematic diagram of the airflow guide mechanism of the present application.

[0017] Figure 4 A schematic diagram of the partial structure of the inverted airflow guide device of the V19 gas burner of a suspension roasting furnace Figure 2 .

[0018] Figure 5 A schematic diagram of the partial structure of the inverted airflow guide device of the V19 gas burner of a suspension roasting furnace Figure 3 .

[0019] The numbers in the figure are: 1, base; 2, gas furnace body; 21, positioning hole; 3, gas burner; 31, gas outlet; 311, large gas outlet; 312, small gas outlet; 32, positioning pin; 4, mounting assembly; 41, mounting plate; 411, slot; 42, fixing bolt; 5, air flow guide mechanism; 51, first air flow guide plate; 52, second air flow guide plate; 53, locking member; 531, fixing block; 532, locking bolt; 533, locking nut; 54, clamping block; DETAILED DESCRIPTION

[0020] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0021] See also Figures 1 to 5 As shown, an inverted airflow guide device for a suspended roasting furnace V19 gas burner includes a base 1 and a gas furnace body 2 arranged on the base 1, a gas burner 3 is arranged on the top of the gas furnace body 2, a gas outlet 31 is arranged on the gas burner 3, a mounting assembly 4 is arranged outside the gas burner 3 and the gas furnace body 2, and an airflow guide mechanism 5 is arranged on the mounting assembly 4.

[0022] When the gas stove is in use, the gas burns in the gas stove body 2, and then the airflow generated by the gas combustion is ejected outward from the gas burner 3. The air outlet 31 provided on the gas burner 3 prevents the airflow in the gas burner 3 from being ejected to the outside from the same place of the gas burner 3. Since the temperature of the airflow ejected from the gas stove body 2 is very high, when the airflow is ejected from the air outlet 31 of the gas burner 3, it will burn the furnace lining around the installation position of the gas burner 3 and on this position. The provision of the airflow guide mechanism 5 can prevent the ejected high-temperature flame from burning the furnace lining around the installation position of the gas burner 3 and on this position, thereby increasing the service life of the gas burner 3 and also reducing the overall operating cost of the system.

[0023] The airflow guide mechanism 5 includes a first airflow guide plate 51, a second airflow guide plate 52 and a locking piece 53; the first airflow guide plate 51 is arranged on one side of the gas burner 3; the second airflow guide plate 52 is arranged on the side of the gas burner 3 away from the first airflow guide plate 51, and the bottoms of the first airflow guide plate 51 and the second airflow guide plate 52 are both arranged on the mounting assembly 4.

[0024] By arranging the first airflow guide plate 51 and the second airflow guide plate 52 on the outside of the gas burner 3, the high-temperature flame ejected from the gas outlet 31 of the gas burner 3 is changed from being ejected in all directions to being ejected upward, so as to prevent the high-temperature flame from being ejected in all directions and burning the furnace lining around the installation position of the gas burner 3 and the installation position, thereby improving the service life of the gas burner 3.

[0025] See also Figure 2 As shown, locking members 53 are disposed on both sides of the first airflow guiding plate 51 and the second airflow guiding plate 52 .

[0026] By setting the locking piece 53, after the first airflow guide plate 51 and the second airflow guide plate 52 are placed on the mounting assembly 4, the two ends of the first airflow guide plate 51 and the second airflow guide plate 52 are temporarily fixed together, so that the two ends of the first airflow guide plate 51 and the second airflow guide plate 52 are tightly fitted together, thereby forming the first airflow guide plate 51 and the second airflow guide plate 52 into an annular cover arranged on the outside of the gas burner 3.

[0027] See also Figure 3 As shown, the locking member 53 includes a fixing block 531, a locking bolt 532 and a locking nut 533; there are two fixing blocks 531, and the two fixing blocks 531 are symmetrically arranged on the same side of the first air flow guide plate 51 and the second air flow guide plate 52; one end of the locking bolt 532 passes through the two fixing blocks 531 in sequence and extends outward; the locking nut 533 is arranged on one end of the locking bolt 532 passing through the two fixing blocks 531.

[0028] The two fixing blocks 531 on the same side of the first airflow guide plate 51 and the second airflow guide plate 52 are locked together by the cooperation of the locking bolt 532 and the locking nut 533, thereby temporarily fixing the first airflow guide plate 51 and the second airflow guide plate 52 together.

[0029] See also Figure 2 and Figure 4As shown, the mounting assembly 4 includes a mounting plate 41 and fixing bolts 42; the mounting plate 41 has two outer portions which are in a ring shape and are sleeved on the connection between the gas furnace body 2 and the gas burner 3, and the tops of the two mounting plates 41 are respectively abutted against the bottoms of the corresponding first airflow guide plate 51 and the second airflow guide plate 52; there are a plurality of fixing bolts 42, and the two mounting plates 41 are fixed to the gas furnace body 2 by the fixing bolts 42.

[0030] The two mounting plates 41 are fixed to the outside of the connection between the gas furnace body 2 and the gas burner 3 by a plurality of fixing bolts 42 . The first airflow guide plate 51 and the second airflow guide plate 52 are fixed to the outside of the gas burner 3 by the arrangement of the two mounting plates 41 .

[0031] See also Figure 4 As shown, a card slot 411 is provided at the top of the two mounting plates 41 , and a card block 54 is provided at the bottom of the first airflow guide plate 51 and the second airflow guide plate 52 . The two card blocks 54 are respectively inserted into the corresponding card slots 411 provided in the two mounting plates 41 .

[0032] When the bottoms of the first airflow guide plate 51 and the second airflow guide plate 52 are respectively placed on the tops of the two corresponding mounting plates 41, the blocks 54 arranged at the bottoms of the first airflow guide plate 51 and the second airflow guide plate 52 will be embedded in the corresponding slots 411 opened in the two mounting plates 41. Through the cooperation of the slots 411 and the blocks 54, the bottoms of the first airflow guide plate 51 and the second airflow guide plate 52 and the tops of the two mounting plates 41 are more stable. Moreover, when the first airflow guide plate 51 and the second airflow guide plate 52 need to be replaced, it is only necessary to pull the first airflow guide plate 51 and the second airflow guide plate 52 upwards so that the blocks 54 arranged at the bottoms of the first airflow guide plate 51 and the second airflow guide plate 52 are pulled out from the slots 411 opened in the corresponding mounting plates 41, and the first airflow guide plate 51 and the second airflow guide plate 52 can be quickly replaced.

[0033] See also Figure 5 As shown, the gas outlet portion 31 includes a large gas outlet 311 and a small gas outlet 312 ; the large gas outlet 311 is arranged at the top of the gas burner 3 ; the small gas outlet 312 has a plurality of small gas outlets 312 which are respectively arranged on the side walls of the gas burner 3 .

[0034] By opening the large air outlet 311 on the gas burner 3, most of the high-temperature flame in the gas burner 3 is ejected from the large air outlet 311. By setting a plurality of pin air outlets, a small part of the high-temperature flame can be distributed so that a small part of the high-temperature flame is ejected outward from the side wall of the gas burner 3, thereby preventing the small part of the high-temperature flame from burning the side wall inside the gas burner 3 when the high-temperature flame is ejected from the large air outlet 311, thereby reducing the service life of the gas burner 3.

[0035] See also Figure 5 As shown, the end of the gas burner 3 close to the gas furnace body 2 is provided with a plurality of positioning pins 32 arranged in a ring shape, and the top of the gas furnace body 2 is provided with a plurality of positioning holes 21 for the corresponding positioning pins 32 to be inserted.

[0036] When the gas burner 3 is installed on the gas stove body 2, the positioning pin 32 provided on the gas burner 3 will be inserted into the corresponding positioning hole 21 provided on the gas stove body 2. Through the cooperation between the positioning pin 32 and the positioning hole 21, the gas burner 3 and the gas stove body 2 will not be misaligned during the assembly process.

[0037] The above embodiments only express one or several implementation methods of the present invention, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the attached claims.

Claims

1. An inverted airflow guide device for a V19 gas burner of a suspension roasting furnace, comprising a base (1) and a gas furnace body (2) arranged on the base (1), characterized in that: A gas burner (3) is arranged on the top of the gas stove body (2), and a gas outlet (31) is arranged on the gas burner (3). A mounting assembly (4) is arranged outside the gas burner (3) and the gas stove body (2), and an airflow guide mechanism (5) is arranged on the mounting assembly (4).

2. The inverted airflow guide device for the V19 gas burner of a suspension roasting furnace according to claim 1 is characterized in that: The airflow guiding mechanism (5) comprises a first airflow guiding plate (51), a second airflow guiding plate (52) and a locking member (53); The first airflow guide plate (51) is arranged on one side of the gas burner (3); The second airflow guide plate (52) is arranged on a side of the gas burner (3) away from the first airflow guide plate (51), and the bottoms of the first airflow guide plate (51) and the second airflow guide plate (52) are both arranged on the mounting assembly (4).

3. The inverted airflow guide device for the V19 gas burner of a suspension roasting furnace according to claim 2 is characterized in that: Locking pieces (53) are provided on both sides of the first airflow guide plate (51) and the second airflow guide plate (52).

4. The inverted airflow guide device for the V19 gas burner of a suspension roasting furnace according to claim 3 is characterized in that: The locking member (53) comprises a fixing block (531), a locking bolt (532) and a locking nut (533); There are two fixing blocks (531), and the two fixing blocks (531) are symmetrically arranged on the same side of the first airflow guide plate (51) and the second airflow guide plate (52); One end of the locking bolt (532) passes through the two fixing blocks (531) in sequence and extends outward; The locking nut (533) is arranged on one end of the locking bolt (532) passing through the two fixing blocks (531).

5. The inverted airflow guide device for the V19 gas burner of a suspension roasting furnace according to claim 2 is characterized in that: The mounting assembly (4) comprises a mounting plate (41) and fixing bolts (42); The mounting plates (41) have two ring-shaped sleeves arranged outside the connection between the gas furnace body (2) and the gas burner (3), and the tops of the two mounting plates (41) are respectively arranged to abut against the bottoms of the corresponding first airflow guide plate (51) and the second airflow guide plate (52); There are a plurality of fixing bolts (42), and the two mounting plates (41) are fixed to the gas furnace body (2) via the fixing bolts (42).

6. The inverted airflow guide device for the V19 gas burner of a suspension roasting furnace according to claim 5, characterized in that: The tops of the two mounting plates (41) are each provided with a card slot (411), the bottoms of the first airflow guide plate (51) and the second airflow guide plate (52) are each provided with a card block (54), and the two card blocks (54) are respectively inserted into the corresponding card slots (411) provided on the two mounting plates (41).

7. The inverted airflow guide device for the V19 gas burner of a suspension roasting furnace according to claim 1 is characterized in that: The air outlet portion (31) comprises a large air outlet (311) and a small air outlet (312); The large gas outlet (311) is arranged at the top of the gas burner (3); The small gas outlets (312) are provided in a plurality of locations respectively arranged on the side walls of the gas burner (3).

8. The inverted airflow guide device for the V19 gas burner of a suspension roasting furnace according to claim 1 is characterized in that: A plurality of positioning pins (32) arranged in a ring shape are arranged at one end of the gas burner (3) close to the gas furnace body (2), and a plurality of positioning holes (21) for corresponding positioning pins (32) to be inserted are provided at the top of the gas furnace body (2).

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