Submerged arc furnace reducing agent feeding device for alloy production

Abstract

The utility model discloses a submerged arc furnace reducing agent feeding device for alloy production, and belongs to the technical field of furnace reducing agent feeding. A bin wall vibrator is installed on the bin wall of the feeding barrel, the feeding barrel and the arc-shaped shrinkage net cover are driven by the bin wall vibrator to vibrate to achieve material screening, a connecting barrel is arranged at the joint of the feeding barrel and the discharging barrel and connected with the feeding barrel and the discharging barrel through a connecting flange, and a plurality of round holes are formed in the connecting flange. A connecting piece is installed in each round hole and connected with a damping spring, and excessive vibration of the discharging barrel is reduced through the damping springs. The arc-shaped contraction net cover is combined with the bin wall vibrator, so that raw materials are finely screened and efficiently filtered, and the purity is improved. The vibration structure promotes smooth flowing of raw materials, blockage and accumulation are avoided, the production efficiency is improved, and the fault risk is reduced. The design of the damping spring and the connecting piece ensures the stability and durability of the device, prolongs the service life and reduces the maintenance cost.

Description

Technical Field

[0001] The utility model relates to the technical field of furnace reducing agent feeding, in particular to a reducing agent feeding device for a submerged arc furnace used in alloy production. Background Art

[0002] One of the key links in the production of a submerged arc furnace is the reducing agent feeding device, which is crucial to the ore reduction reaction. This device is designed to achieve continuous and uniform feeding of the reducing agent to ensure efficient and stable reactions within the furnace.

[0003] Chinese patent CN209098757U discloses a reducing agent feeding device for a blast furnace specially used for the production of manganese silicon alloy, comprising a lower placement chamber, a clamping block, an inserting block and an upper placement chamber, wherein a clamping block is welded at the bottom end of the lower placement chamber, and fixing blocks are welded on the lower placement chambers on both sides of the clamping block, and fastening bolts are provided on the fixing blocks, an inserting block is provided at the top end of the lower placement chamber, and a second external thread is provided at one end of the inserting block extending to the inside of the slot, a second internal thread that cooperates with the second external thread is provided on the inner wall of the slot, a first screen is welded on the inner wall of the top end of the inserting block, and a vibrating block is evenly fixed to the bottom end of the first screen, an upper placement chamber is welded at the top end of the slot, and a top cover is provided at the top end of the upper placement chamber, and a first external thread is provided at one end of the top cover extending to the inside of the upper placement chamber.

[0004] However, in actual operation, the reducing agent feeding device of the submerged arc furnace faces a prominent problem: dust. Because the reducing agent often contains debris, this debris easily generates dust during transportation. This phenomenon not only deteriorates the production environment and increases safety hazards, but also directly threatens the health of operators. Dust not only reduces visibility in the working environment, increasing the risk of mechanical failure and fire, but can also enter the human body through breathing, causing damage to the respiratory system. Long-term exposure may even cause occupational diseases. Furthermore, dust can adhere to equipment surfaces, affecting its normal operation and maintenance, and further exacerbating instability in the production process. Utility Model Content

[0005] The main purpose of the utility model is to provide a reducing agent feeding device for a submerged arc furnace used in alloy production, which can effectively solve the problems raised in the background technology.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A reducing agent feeding device for a submerged arc furnace for alloy production comprises an upper barrel, a lower barrel and a silo, wherein the lower barrel is located at the lower end of the upper barrel and the silo is provided at the upper end of the upper barrel;

[0008] The silo wall is installed with an arc-shaped shrinking mesh cover, which isolates the silo into a debris bin for collecting debris. The side wall of the upper barrel is installed with a discharge pipe, the pipe mouth of the discharge pipe is connected with an arc-shaped elbow, and the discharge pipe is connected to the debris bin to realize the discharge of material debris.

[0009] The silo wall of the upper material barrel is installed with a silo wall vibrator, which drives the upper material barrel and the arc-shaped contraction mesh cover to vibrate to achieve material screening. A connecting cylinder is provided at the connection between the upper material barrel and the lower material barrel, and the connecting cylinder is connected to the upper material barrel and the lower material barrel through a connecting flange. A plurality of circular holes are opened on the connecting flange, and a connecting piece is installed in each of the circular holes and is connected to a shock-absorbing spring, which reduces excessive vibration of the lower material barrel through the shock-absorbing spring.

[0010] As an optional solution of the present application, the upper barrel and the lower barrel are both frustum-shaped barrels, the two frustum-shaped barrels are symmetrically designed, the discharge pipe is welded and fixed to the upper barrel, and the discharge pipe is directly opposite to the opening on the side wall of the upper barrel;

[0011] As an optional solution of the present application, the cross section of the arc-shaped shrinkable mesh cover is designed in a "C" shape, and an annular shrink ring is provided on the middle section of the inner wall of the arc-shaped shrinkable mesh cover. The annular shrink ring is a stainless steel coil and is inserted into the mesh of the arc-shaped shrinkable mesh cover.

[0012] As an optional solution of the present application, a set of connecting flanges is provided at the upper and lower ends of the connecting cylinder, and another set of connecting flanges is provided at the ports of the upper and lower cylinders, and a shock-absorbing rubber ring is provided at the connection between the two sets of connecting flanges;

[0013] As an optional solution of the present application, the connecting member includes a screw, a nut, a ring and an anti-slip gasket, the anti-slip gasket, the nut and the ring are sleeved on the screw, the ring is located at the inner end of the screw, and the anti-slip gasket and the nut fix the screw on the connecting flange;

[0014] As an optional solution of the present application, the shock-absorbing spring is welded to the circular ring of the connecting piece, and the shock-absorbing spring is located between the two connecting flanges of the connecting cylinder.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] In this utility model, the innovative design of the curved retractable mesh, combined with the activation of the bin wall vibrator, achieves fine screening and efficient filtration of the raw materials. During this process, debris from the raw materials is effectively separated and collected in the debris bin, significantly improving the purity of the raw materials and providing high-quality basic raw materials for subsequent alloy production.

[0017] Secondly, the introduction of a vibrating structure not only enhances screening but also promotes smooth material flow. The vibrations of the silo wall vibrator drive subtle vibrations in the upper barrel and the curved, contracting mesh cover, preventing blockage and accumulation of material during flow and ensuring even and stable entry of material into the lower barrel. This design not only improves production efficiency but also reduces the risk of equipment failure caused by material blockage.

[0018] Furthermore, the sophisticated design of the shock-absorbing spring and connector effectively ensures the stability and durability of the device during vibration. The shock-absorbing spring reduces damage to the overall structure of the device due to vibration, extending the service life of the equipment. The stable connection and easy disassembly design of the connector facilitate subsequent maintenance and replacement, reducing maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a front view of the overall structure of the utility model;

[0021] Figure 3 This is a structural sectional view of the utility model;

[0022] Figure 4 for Figure 3 Enlarged schematic diagram of point A in the middle.

[0023] In the figure: 1. upper barrel; 2. lower barrel; 3. silo; 4. arc-shaped shrinking mesh cover; 5. debris bin; 6. discharge pipe; 7. arc-shaped elbow; 8. connecting barrel; 9. connecting flange; 10. shock-absorbing spring; 11. connecting piece; 12. silo wall vibrator. DETAILED DESCRIPTION

[0024] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0025] like Figure 1 - Figure 4 The figure shows a reducing agent feeding device for a submerged arc furnace designed specifically for alloy production. This device cleverly integrates three core components: an upper barrel 1, a lower barrel 2, and a silo 3. The lower barrel 2 is tightly connected to the bottom of the upper barrel 1, while the top of the upper barrel 1 cleverly opens the entrance to the silo 3, enabling the initial receipt of raw materials.

[0026] The ingenious design of silo 3 incorporates an innovative curved retractable screen 4. This not only looks elegant but, more importantly, its unique shape successfully divides the interior of silo 3 into an independent debris collection area—debris bin 5. This design significantly improves raw material purity and reduces the impact of debris on subsequent production processes.

[0027] To further optimize the discharge process, we meticulously installed a discharge pipe 6 on the sidewall of the upper barrel 1, cleverly connecting its opening to a curved elbow 7. This ensures that material debris can be smoothly discharged to the designated area. Furthermore, the precise connection between the discharge pipe 6 and the debris bin 5 enables efficient collection and discharge of material debris.

[0028] To improve screening efficiency, we've installed a wall vibrator 12 on the wall of the feed barrel 1. When activated, the vibrator causes the feed barrel 1 and the curved, contracting mesh 4 to vibrate subtly, enabling precise screening of the raw materials. This design not only improves raw material utilization but also reduces production costs.

[0029] To ensure the overall stability and durability of the device, a connecting tube 8 is installed at the junction of the upper and lower barrels 1 and 2. This connecting tube 8 is tightly connected to the upper and lower barrels 2 via connecting flanges 9. Connectors 11 and damping springs 10 are installed in the circular holes of each connecting flange 9. The presence of these damping springs 10 effectively reduces excessive vibration generated by the lower barrel 2 during vibration, thereby protecting the overall structure of the device from damage.

[0030] Both the upper and lower barrels 1 and 2 are truncated cone-shaped, and their symmetrical layout not only makes them aesthetically pleasing but also structurally more stable and reliable. Furthermore, the welded connection between the discharge pipe 6 and the upper barrel 1, and the fact that the discharge pipe 6 faces the opening in the side wall of the upper barrel 1, ensure smooth and unobstructed discharge.

[0031] Furthermore, the arc-shaped shrinking screen 4 has a unique "C"-shaped cross-section, and an annular shrinking ring is provided in the middle of its inner wall. This ring is made of stainless steel coil and cleverly inserted into the mesh of the arc-shaped shrinking screen 4, further enhancing the shrinking effect and durability of the screen.

[0032] During the connection process between the connecting cylinder 8 and the upper and lower barrels 2, we also specially set up shock-absorbing rubber rings. The presence of these rubber rings not only improves the sealing of the connection but also further enhances the shock-absorbing effect of the device.

[0033] Connector 11 is ingeniously designed. It comprises multiple components, including a screw, nut, ring, and anti-slip gasket. The anti-slip gasket and nut securely fasten the screw to the connecting flange 9, while the ring cleverly connects to the inner end of the screw and is connected to the shock-absorbing spring 10. This design not only makes connector 11 more stable and reliable, but also facilitates subsequent maintenance and replacement.

[0034] Instructions: Pour the reducing agent raw material into the inlet of silo 3. The design of silo 3 allows for initial concentration of the raw material before it enters the upper barrel 1. Upon entering silo 3, the raw material encounters the curved, converging mesh screen 4. This design allows debris from the raw material to be separated and fall into the debris bin 5, guided by gravity and the mesh screen. Pure raw material continues to flow downward. The silo wall vibrator 12 is activated, vibrating the upper barrel 1 and the curved, converging mesh screen 4, further screening the raw material, ensuring even greater purity before entering the lower barrel 2 and improving raw material utilization.

[0035] The screened raw materials flow from the bottom of the upper barrel 1 into the lower barrel 2. The design of the lower barrel 2 ensures a smooth flow of raw materials, preparing for subsequent alloy production. During the vibratory screening process, the resulting material debris is discharged through the discharge pipe 6. The discharge pipe 6 is connected to the curved elbow 7, ensuring that the debris can be smoothly discharged to the designated area for subsequent processing.

[0036] The connecting tube 8 between the upper and lower barrels 1 and 2 is tightly connected via a connecting flange 9, a connector 11, and a shock-absorbing spring 10. The presence of the shock-absorbing spring 10 effectively reduces vibration damage to the overall structure of the device, improving its stability and durability. The sophisticated design of the connector 11 facilitates subsequent maintenance and replacement. To replace the shock-absorbing spring 10 or perform other maintenance, simply disassemble the connector 11.

[0037] The entire device maintains high efficiency and stability during operation, providing a continuous supply of pure reducing agent raw materials for alloy production. The submerged arc furnace reducing agent feeding device realizes the functions of receiving, screening, unloading and debris discharge of raw materials, providing strong support for alloy production.

[0038] It should be noted that, in this document, relational terms such as first and second (number one, number two), etc., are used solely to distinguish one entity or operation from another, and do not necessarily require or imply any actual relationship or order between these entities or operations. However, the terms "comprise," "include," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, the phrase "comprises a..." does not preclude the presence of additional identical elements in the process, method, article, or apparatus that includes the elements.

[0039] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A reducing agent feeding device for a submerged arc furnace for alloy production, comprising an upper barrel (1), a lower barrel (2) and a silo (3), wherein the lower barrel (2) is located at the lower end of the upper barrel (1), and the silo (3) is provided at the upper end of the upper barrel (1), and characterized in that: The silo (3) is provided with an arc-shaped shrinking mesh cover (4) on its wall, and a debris bin (5) for collecting debris is separated from the silo (3) by the arc-shaped shrinking mesh cover (4). A discharge pipe (6) is provided on the side wall of the upper barrel (1), and the mouth of the discharge pipe (6) is connected to an arc-shaped elbow (7), and the discharge pipe (6) is connected to the debris bin (5) to discharge the material debris. The silo wall of the upper material barrel (1) is installed with a silo wall vibrator (12), and the upper material barrel (1) and the arc-shaped shrinking mesh cover (4) are driven to vibrate by the silo wall vibrator (12) to realize material screening. A connecting tube (8) is provided at the connection between the upper material barrel (1) and the lower material barrel (2), and the connecting tube (8) is connected to the upper material barrel (1) and the lower material barrel (2) through a connecting flange (9). A plurality of circular holes are opened on the connecting flange (9), and a connecting piece (11) is installed in each of the circular holes and is connected to a shock-absorbing spring (10), and the shock-absorbing spring (10) is used to reduce excessive vibration of the lower material barrel (2).

2. The reducing agent feeding device for a submerged arc furnace for alloy production according to claim 1, characterized in that: The upper barrel (1) and the lower barrel (2) are both truncated cone-shaped barrels, and the two truncated cone-shaped barrels are symmetrically designed. The discharge pipe (6) is welded and fixed to the upper barrel (1), and the discharge pipe (6) is directly opposite to the opening on the side wall of the upper barrel (1).

3. The reducing agent feeding device for a submerged arc furnace for alloy production according to claim 2, characterized in that: The cross section of the arc-shaped shrinkable mesh cover (4) is designed in a "C" shape, and an annular shrink ring is provided on the middle section of the inner wall of the arc-shaped shrinkable mesh cover (4). The annular shrink ring is a stainless steel coil and is inserted into the mesh of the arc-shaped shrinkable mesh cover (4).

4. The reducing agent feeding device for a submerged arc furnace for alloy production according to claim 3, characterized in that: A set of connecting flanges (9) are provided at the upper and lower ends of the connecting cylinder (8), and another set of connecting flanges (9) are provided at the ports of the upper barrel (1) and the lower barrel (2). A shock-absorbing rubber ring is provided at the connection between the two sets of connecting flanges (9).

5. The reducing agent feeding device for a submerged arc furnace for alloy production according to claim 4, characterized in that: The connecting piece (11) comprises a screw, a nut, a ring and an anti-skid gasket, wherein the anti-skid gasket, the nut and the ring are sleeved on the screw, the ring is located at the inner end of the screw, and the anti-skid gasket and the nut fix the screw on the connecting flange (9).

6. The reducing agent feeding device for a submerged arc furnace for alloy production according to claim 5, characterized in that: The shock-absorbing spring (10) is welded to the circular ring of the connecting piece (11), and the shock-absorbing spring (10) is located between the two connecting flanges (9) of the connecting cylinder (8).

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