Rotary injection device in reverberatory furnace

Abstract

The utility model relates to the technical field of rotary blowing devices, and discloses a rotary blowing device in a reverberatory furnace, which comprises a top frame, a rotary drum penetrates through the center of the top frame and is rotatably mounted, the top end of the rotary drum is rotatably connected with an air inlet pipe, and a driving motor is fixedly mounted on the upper surface of the top frame. A large chain wheel is fixedly mounted at the output end of the driving motor, and a rotary spraying assembly is arranged on the outer side of the rotary drum. According to the rotary blowing device in the reverberatory furnace, the rotary spraying assembly is arranged, when a rotary drum rotates and a rotary spraying arm rotates in a fixing ring, a contact wheel intermittently makes contact with an arc-shaped block, at the moment, the contact wheel is driven to rotate, airflow entering the rotary spraying arm can be sprayed out through a spraying head, and in the moving process of the rotary spraying arm, the airflow can be sprayed out through the spraying head; when the contact wheel rotates, in cooperation with transmission of the driving gear and the rack, and in cooperation with the elastic force of the coil spring, the spray head continuously rotates on the inner wall of the bottom of the rotary spraying arm in a reciprocating mode.

Description

Technical Field

[0001] This utility model relates to the technical field of rotary jet blowing devices, specifically a rotary jet blowing device for a reverberatory furnace. Background Technology

[0002] A reverberatory furnace is a chamber-type flame furnace where heat transfer relies not only on the reflection of the flame but, more importantly, on the radiation of the furnace roof, walls, and hot gases. In terms of heat transfer methods, many furnace types (such as heating furnaces and open-hearth furnaces) can be classified as reverberatory furnaces, but generally refers to reverberatory furnaces used for non-ferrous metal smelting.

[0003] Existing rotary injection devices for reverberatory furnaces operate by rotating an injection arm that drives the nozzle to rotate continuously, causing the injection medium (such as oxygen, pulverized coal, or combustion-supporting gas) to cover a larger area of ​​the furnace in a circular or spiral trajectory. This dynamic injection method avoids the problems of excessively high local concentrations or incomplete reactions caused by fixed injection points, thereby improving fuel combustion efficiency or the uniformity of contact between the oxidizer and the furnace charge.

[0004] However, in actual use, the nozzle of the rotary jetting device has a fixed airflow direction during operation inside the reverberatory furnace, which makes it easy for dust to accumulate on its port surface, thus affecting the subsequent normal spraying operation of the nozzle. In view of this, we propose a rotary jetting device for use inside the reverberatory furnace. Utility Model Content

[0005] The purpose of this invention is to provide a rotary jetting device for a reverberatory furnace to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a rotary jetting device for a reverberatory furnace, comprising a top frame, a rotating cylinder rotatably mounted through the center of the top frame, an air inlet pipe rotatably connected to the top of the rotating cylinder, a drive motor fixedly mounted on the upper surface of the top frame, a large sprocket fixedly mounted on the output end of the drive motor, a small sprocket connected to the large sprocket via chain drive, a rotary jetting arm fixedly mounted on the arc-shaped outer wall at the bottom of the rotating cylinder, and a rotary jetting assembly provided on the outer side of the rotating cylinder, the rotary jetting assembly comprising:

[0007] A fixed ring is fixedly installed on the lower surface of the top frame. An arc-shaped block is fixedly installed on the arc-shaped inner surface of the fixed ring. A contact wheel is rotatably installed on the upper surface of the end of the rotary spray arm away from the rotating cylinder. A drive gear is coaxially fixedly installed on the contact wheel. A rack is slidably installed on the inner wall of the rotary spray arm. A nozzle is rotatably installed on the inner wall of the rotary spray arm.

[0008] A coil spring is sleeved on the arc-shaped outer wall of the nozzle, a driven gear is sleeved on the arc-shaped outer wall of the nozzle, a nozzle is opened on the arc-shaped outer wall of the nozzle, and an annular mesh cover is fixedly installed on the lower surface of the rotary spray arm.

[0009] Preferably, the inner arc-shaped wall of the fixing ring is provided with an annular groove whose thickness is adapted to the thickness of the rotary spray arm, and the end of the rotary spray arm away from the rotating cylinder is located inside the annular groove, thereby providing support for the end of the rotary spray arm away from the rotating cylinder to ensure that the rotary spray arm always moves in a horizontal position.

[0010] Preferably, the number of arc-shaped blocks is set to multiple sets, and the multiple sets of arc-shaped blocks are evenly distributed in a circumferential array on the arc-shaped inner surface of the fixing ring.

[0011] Preferably, a cylindrical groove is formed on the inner wall of the rotary spray arm, and a disc adapted to the inner diameter of the cylindrical groove is formed on the arc-shaped outer wall of the nozzle. The two ends of the coil spring are fixedly connected to the top inner wall of the cylindrical groove and the upper surface of the disc, respectively, so that the nozzle always has a tendency to rotate in the opposite direction to achieve reset when it rotates on the bottom inner wall of the rotary spray arm.

[0012] Preferably, the nozzle is inclined with the side closer to the center of the nozzle being higher and the side farther away from the center of the nozzle being lower, so that the airflow entering the nozzle can be blown out in all directions under the guidance of the inclined nozzle.

[0013] Preferably, the annular mesh cover is fitted on the outside of the nozzle, and the arc-shaped inner surface of the annular mesh cover is in contact with the outer surface of the nozzle. At the same time, the annular mesh cover and the nozzle are set in the same horizontal plane, so that the airflow can be better dispersed by the annular mesh cover being outside the nozzle.

[0014] Preferably, a spiral band is fixedly installed on the arc-shaped inner wall at the bottom of the nozzle, and the number of spiral bands is set to multiple sets, and the multiple sets of spiral bands are evenly distributed in a spiral array on the arc-shaped inner surface at the bottom of the nozzle.

[0015] Compared with the prior art, the present invention provides a rotary jet blowing device for a reverberatory furnace, which has the following beneficial effects:

[0016] 1. The rotary jetting device in the reverberatory furnace is equipped with a rotary jetting assembly. When the rotary drum rotates, as the rotary jetting arm rotates within the fixed ring, the contact wheel intermittently contacts the arc-shaped block. This causes the contact wheel to rotate, and the airflow entering the rotary jetting arm can be ejected outward through the nozzle. During the movement of the rotary jetting arm, the rotation of the contact wheel, in conjunction with the transmission of the drive gear and rack, and the elasticity of the coil spring, causes the nozzle to continuously reciprocate on the inner wall at the bottom of the rotary jetting arm.

[0017] 2. The rotary jetting device inside the reverberatory furnace generates an outward jetting airflow within the nozzle. In conjunction with the continuous reciprocating rotation of the nozzle, the spiral band guides the jetting airflow, causing the airflow to generate spiral rotational force as it is jetted from top to bottom. This further increases the diffusion range of the airflow during jetting, thereby improving the rotary jetting effect of the device. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the main structure of the present utility model;

[0019] Figure 2 This is a schematic diagram of the top frame removal structure of this utility model;

[0020] Figure 3 This is a schematic cross-sectional view of the rotating cylinder structure of this utility model;

[0021] Figure 4 This is a partial three-dimensional structural diagram of the rotary jet assembly of this utility model;

[0022] Figure 5 This is a cross-sectional view of the nozzle structure of this utility model.

[0023] In the diagram: 1. Top frame; 2. Rotary drum; 3. Air inlet pipe; 4. Drive motor; 5. Large sprocket; 6. Chain; 7. Small sprocket; 8. Spinning spray arm; 9. Spinning spray assembly; 91. Fixing ring; 92. Arc block; 93. Contact wheel; 94. Drive gear; 95. Rack; 96. Nozzle; 97. Driven gear; 98. Coil spring; 99. Nozzle; 910. Annular mesh cover; 911. Spiral belt. Detailed Implementation

[0024] like Figures 1-5 As shown, this utility model provides a technical solution: a rotary spraying device in a reverberatory furnace, including a top frame 1, a rotating cylinder 2 rotatably mounted through the center of the top frame 1, an air inlet pipe 3 rotatably connected to the top of the rotating cylinder 2, a drive motor 4 fixedly mounted on the upper surface of the top frame 1, a large sprocket 5 fixedly mounted on the output end of the drive motor 4, a small sprocket 7 being driven by a chain 6, a rotary spraying arm 8 fixedly mounted on the arc-shaped outer wall at the bottom of the rotating cylinder 2, and a rotary spraying assembly 9 provided on the outer side of the rotating cylinder 2, the rotary spraying assembly 9 including a fixing ring 91, an arc-shaped block 92, a contact wheel 93, a drive gear 94, a rack 95, a nozzle 96, a coil spring 98, a driven gear 97, a nozzle 99, an annular mesh cover 910, and a spiral belt 911.

[0025] In one embodiment of this utility model, a fixing ring 91 is fixedly installed on the lower surface of the top frame 1, and an arc-shaped block 92 is fixedly installed on the arc-shaped inner surface of the fixing ring 91. A contact wheel 93 is rotatably installed on the upper surface of the end of the rotary spray arm 8 away from the rotating cylinder 2. A drive gear 94 is coaxially fixedly installed on the contact wheel 93. A rack 95 is slidably installed on the inner wall of the rotary spray arm 8. A nozzle 96 is rotatably installed on the inner wall of the rotary spray arm 8. A coil spring 98 is sleeved on the arc-shaped outer wall of the nozzle 96. A driven gear 97 is sleeved on the arc-shaped outer wall of the nozzle 96. A nozzle 99 is opened on the arc-shaped outer wall of the nozzle 96. An annular mesh cover 910 is fixedly installed on the lower surface of the rotary spray arm 8. A spiral belt 911 is fixedly installed on the arc-shaped inner wall at the bottom end of the nozzle 96.

[0026] Furthermore, the small sprocket 7 is installed through and fixedly mounted on the arc-shaped outer wall of the rotating drum 2. When the drive motor 4 is started, the small sprocket 7 drives the rotating drum 2 to rotate continuously through the transmission of the large sprocket 5 and the chain 6. At the same time, the lower surface of the top frame 1 is provided with multiple sets of cylinders to facilitate the fixed connection between the top frame 1 and the fixing ring 91. Specifically, the arc-shaped inner wall of the fixing ring 91 is provided with an annular groove whose thickness is adapted to the thickness of the spray arm 8, and the end of the spray arm 8 away from the rotating drum 2 is located inside the annular groove, thereby providing support for the end of the spray arm 8 away from the rotating drum 2 to ensure that the spray arm 8 always moves in a horizontal position.

[0027] In addition, multiple sets of arc-shaped blocks 92 are arranged in a circumferential array and evenly distributed on the arc-shaped inner surface of the fixed ring 91. Meanwhile, the interiors of the rotating cylinder 2 and the rotary spray arm 8 are hollow, and the interiors of the rotating cylinder 2 and the rotary spray arm 8 are connected through each other, so that the external air supply device supplies air into the rotating cylinder 2 through the air inlet pipe 3, and finally sprays air outward through the rotary spray arm 8 and the nozzle 96. Furthermore, multiple sets of nozzles 96 are arranged in a linear array and evenly distributed on the lower surface of the rotary spray arm 8. Meanwhile, a cylindrical groove is opened on the inner wall of the rotary spray arm 8, and a disc adapted to the inner diameter of the cylindrical groove is opened on the arc-shaped outer wall of the nozzle 96. The two ends of the coil spring 98 are fixedly connected to the top inner wall of the cylindrical groove and the upper surface of the disc, respectively, so that when the nozzle 96 rotates on the bottom inner wall of the rotary spray arm 8, it always has a tendency to rotate in the opposite direction to achieve a reset.

[0028] Meanwhile, several rubber pillars are evenly arranged in a circular array on the arc-shaped outer wall of the contact wheel 93 to increase the friction coefficient when the contact wheel 93 contacts the arc-shaped block 92. When the rotating drum 2 rotates, as the spray arm 8 rotates within the fixed ring 91, the contact wheel 93 intermittently contacts the arc-shaped block 92, which drives the contact wheel 93 to rotate. Furthermore, the driving gear 94 and the driven gear 97 mesh with the rack 95 to achieve transmission. The nozzle 96 is connected to the internal cavity of the spray arm 8, and the airflow entering the spray arm 8 can be sprayed out through the nozzle 96. During the movement of the spray arm 8, when the contact wheel 93 rotates, in conjunction with the transmission of the driving gear 94 and the rack 95, and with the elasticity of the coil spring 98, the nozzle 96 continuously reciprocates on the bottom inner wall of the spray arm 8.

[0029] In this embodiment of the invention, the nozzle 99 is inclined, with the side closer to the center of the nozzle 96 being higher and the side farther from the center of the nozzle 99 being lower. This allows the airflow entering the nozzle 99 to be blown outwards under the guidance of the inclined nozzle 99, thereby improving the diffusion effect when the nozzle 96 blows air. Furthermore, the annular mesh cover 910 is fitted on the outside of the nozzle 96, and the arc-shaped inner surface of the annular mesh cover 910 is in contact with the outer surface of the nozzle 96. At the same time, the annular mesh cover 910 and the nozzle 99 are set in the same horizontal plane. The annular mesh cover 910 has a better dispersion effect on the airflow on the outside of the nozzle 99. Moreover, the air passage of the annular mesh cover 910 can be ensured by the continuously rotating nozzle 96, avoiding blockage when the airflow is blown.

[0030] It is worth noting that there are multiple sets of spiral bands 911, and these multiple sets of spiral bands 911 are evenly distributed in a spiral array on the bottom arc-shaped inner surface of the nozzle 96. When an airflow is generated from the inside out in the nozzle 96, the spiral bands 911 can guide the airflow in conjunction with the continuous reciprocating rotation of the nozzle 96. This allows the airflow to generate spiral rotational force when it is ejected from top to bottom, thereby further increasing the diffusion range of the airflow during ejection and improving the rotational blowing effect of the device.

[0031] In this invention, during use, a high-speed airflow is blown into the interior of the rotating drum 2 through the air inlet pipe 3 via an external air supply device, and then through the cavity in the rotary spray arm 8, and finally sprayed outward through the nozzle 96. The continuous rotation of the rotating drum 2 increases the working range of the nozzle 96 during the spraying operation, thereby improving the performance of the reverberatory furnace equipped with this rotary spraying device. Specifically, by setting the rotary spray assembly 9, the airflow entering the rotary spray arm 8 can be sprayed outward through the nozzle 96. During the movement of the rotary spray arm 8, when the contact wheel 93 rotates, it cooperates with the transmission of the drive gear 94 and the rack 95, and at the same time with the elasticity of the coil spring 98, so that the nozzle 96 continuously reciprocates on the bottom inner wall of the rotary spray arm 8.

[0032] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A rotary injection device in a reverberatory furnace, comprising a top frame (1), a rotating drum (2) penetrating and rotatingly installed at the center of the top frame (1), an air inlet pipe (3) rotatingly connected to the top end of the rotating drum (2), a driving motor (4) fixedly installed on the upper surface of the top frame (1), a large chain wheel (5) fixedly installed on the output end of the driving motor (4), a small chain wheel (7) drivingly connected to the large chain wheel (5) through a chain (6), and a rotary injection arm (8) fixedly installed on the bottom end arc-shaped outer wall of the rotating drum (2). The outer side of the rotating drum (2) is provided with a rotary spraying assembly (9), the rotary spraying assembly (9) comprises: A fixed ring (91) is fixedly installed on the lower surface of the top frame (1), an arc-shaped block (92) is fixedly installed on the arc-shaped inner surface of the fixed ring (91), a contact wheel (93) is rotatably installed on the upper surface of the end of the rotary spraying arm (8) away from the rotating drum (2), a driving gear (94) is coaxially fixedly installed on the contact wheel (93), a rack (95) is slidably installed on the inner wall of the rotary spraying arm (8), and a spray head (96) is rotatably installed on the inner wall of the rotary spraying arm (8). A coil spring (98) is sleeved on the arc-shaped outer wall of the spray head (96), a driven gear (97) is sleeved on the arc-shaped outer wall of the spray head (96), a spray port (99) is formed in the arc-shaped outer wall of the spray head (96), and an annular mesh cover (910) is fixedly installed on the lower surface of the rotary spraying arm (8).

2. A rotary injection device in a reverberatory furnace as claimed in claim 1, wherein: An annular groove with a thickness matching the thickness of the rotary spraying arm (8) is formed in the arc-shaped inner wall of the fixed ring (91), and the end of the rotary spraying arm (8) away from the rotating drum (2) is arranged in the annular groove.

3. A rotary injection device in a reverberatory furnace as claimed in claim 1, wherein: A plurality of groups of arc-shaped blocks (92) are evenly distributed in a circumferential array on the arc-shaped inner surface of the fixed ring (91).

4. A rotary injection device in a reverberatory furnace as claimed in claim 1, wherein: A cylindrical groove is formed in the inner wall of the rotary spraying arm (8), a disc with an inner diameter matching the cylindrical groove is formed on the arc-shaped outer wall of the spray head (96), and the two ends of the coil spring (98) are fixedly connected with the top end inner wall of the cylindrical groove and the upper surface of the disc, respectively.

5. A rotary injection device in a reverberatory furnace as claimed in claim 1, wherein: The spray port (99) is arranged in an inclined manner, with the side close to the center of the spray head (96) being higher and the side away from the center of the spray port (99) being lower.

6. A rotary injection device in a reverberatory furnace as claimed in claim 1, wherein: The annular mesh cover (910) is sleeved on the outer side of the spray head (96), the arc-shaped inner surface of the annular mesh cover (910) is fitted with the outer surface of the spray head (96), and the annular mesh cover (910) and the spray port (99) are arranged in the same horizontal plane.

7. A rotary injection device in a reflector furnace as claimed in claim 1, wherein: A plurality of groups of helical strips (911) are evenly distributed in a helical line array on the bottom end arc-shaped inner surface of the spray head (96).

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