Shaft furnace with shared feeding structure

Abstract

The utility model relates to the technical field of shaft furnaces, and discloses a shaft furnace with a common feeding structure. The shaft furnace with the feeding structure capable of being shared comprises a shaft furnace body, a limiting pipe is fixedly installed at the upper end of the shaft furnace body, a connecting bolt is installed at the lower end of the limiting pipe in a penetrating mode, a gear ring is fixedly installed in the limiting pipe, a limiting bearing is installed at the upper end of the limiting pipe in an embedded mode, and a conveying pipe penetrates through plate-shaped structures at the upper end and the lower end of a movable pipe. Bending structures are arranged at the bottom ends of the connecting pipes, the two bulk material pipes are installed at the tail ends of the bending structures of the connecting pipes below the movable pipes respectively, materials are received by the receiving hopper, then driven by the receiving hopper and the transmission plate to enter the two connecting pipes below through the conveying pipe, and discharged from the tail ends of the bulk material pipes at the bottom ends of the connecting pipes to enter the shaft furnace. In this way, the two bulk material pipes are symmetrically distributed and share one receiving hopper, so that the gravity center offset is reduced when the movable pipe rotates, and vibration generated when the movable pipe rotates is reduced.

Description

Technical Field

[0001] This utility model relates to the field of vertical furnace technology, specifically a vertical furnace with a shared charging structure. Background Technology

[0002] A vertical shaft furnace is an ultra-high power electric arc furnace with an upright furnace body and a vertical shaft on the furnace cover. It uses the high-temperature exhaust gas from the electric arc furnace to preheat the scrap steel in the vertical shaft. The furnace gas moves upward in the furnace and exchanges heat with the furnace charge in a countercurrent manner. In most vertical shaft furnaces, the furnace charge and fuel are in direct contact.

[0003] The existing reference is Chinese utility model patent CN203687585U, which discloses a vertical continuous aluminum smelting furnace, including a vertical smelting furnace and a charging mechanism consisting of a bottom furnace, a vertical furnace, a combustion system, a flue gas collection hood, and a flue gas pipe. The vertical furnace has at least two sections above the bottom furnace, forming a small-space bottom furnace and a high vertical furnace structure. A rectangular plate preheater is installed on the side of the aluminum ingot addition parabola of the top vertical furnace facing the charging mechanism. The rectangular plate preheater absorbs the impact force of the added aluminum ingot and connects and supplies preheated air to the combustion system for combustion. The linings of each vertical furnace are integrally cast in sections and constructed using an anchor hook structure. The lining of the bottom furnace is also integrally cast in sections and constructed using an anchor hook structure, and there are segmented expansion grooves between adjacent cast sections of the bottom furnace lining. This utility model features a rectangular plate preheater that improves the impact resistance of the vertical furnace. The vertical furnace and the bottom furnace are constructed using an anchoring hook and are integrally cast in sections. The bottom furnace has a small combustion space, while the vertical furnace is tall. It is equipped with an automatic feeding mechanism and a combustion system to achieve energy saving and continuous production.

[0004] Currently, to accommodate the continuous operation of the vertical shaft furnace and the melting rate of the materials inside, materials are generally added to the furnace from the top via a charging structure. To ensure even distribution of materials inside the furnace, the charging structure uses rotatable pipes to adjust the falling position of the materials. During material distribution, the pipes rotate to make the material distribution more uniform. However, the bottom of the pipe structure is generally inclined, causing the center of gravity of the device and the materials to deviate from the center of rotation, resulting in vibration. Currently, materials are generally lifted by a conveyor belt. To receive the materials falling from the conveyor belt, a temporary storage silo is usually set up on the top of the furnace. Because the pipe diameter and the inner diameter of the upper silo are inconsistent, materials may become blocked inside the silo, affecting normal material feeding. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] In view of the shortcomings of the existing technology, this utility model provides a vertical furnace with a shared feeding structure, which has the advantages of reducing vibration during material feeding and preventing material blockage, thus solving the above-mentioned technical problems.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a vertical furnace with a shared feeding structure, comprising: a vertical furnace, a limiting tube fixedly installed at the upper end of the vertical furnace, a connecting bolt inserted at the lower end of the limiting tube, a toothed ring fixedly installed inside the limiting tube, a limiting bearing fitted at the upper end of the limiting tube, a connecting bearing fitted at the bottom end of the limiting tube, a movable tube fitted inside the limiting bearing and the connecting bearing, drive motors fixedly installed on the left and right sides of the movable tube, a gear fixedly installed at the end of the shaft of the drive motor, a limiting ring fixedly installed at the top end of the limiting tube, a conveying pipe provided inside the movable tube, a connecting pipe fixedly installed at the bottom end of the movable tube, a material dispersing pipe fixedly installed at the bottom end of the connecting pipe, a receiving hopper fixedly installed above the limiting ring, and a transmission plate fixedly installed above the movable tube; the receiving hopper is capable of receiving materials falling from the top of the conveyor belt.

[0009] As a preferred embodiment of this utility model, the connecting bolt is installed in a ring above the flange structure at the bottom end of the limiting tube with the center of the limiting tube as the reference. The connecting bolt passes through the flange structure at the bottom end of the limiting tube and is fixedly connected to the vertical furnace at the bottom end. The connecting bolt can limit the position of the limiting tube.

[0010] As a preferred technical solution of this utility model, the upper and lower ends of the movable tube are disc structures, and the outer edge of the upper disc structure of the movable tube is provided with a tubular protrusion. The movable tube is rotatably connected to the limiting bearing and the connecting bearing through a limiting bearing. The limiting bearing and the connecting bearing facilitate the rotation of the movable tube.

[0011] As a preferred technical solution of this utility model, the drive motor is mirror-symmetrically mounted above the bottom disc structure of the movable tube with the center of the movable tube as the reference. The gear and the gear ring mesh with each other. The inner diameter of the limiting ring is smaller than the inner diameter of the outer edge of the protruding tubular structure of the top disc structure of the movable tube, and the bottom end of the limiting ring does not contact the movable tube. The limiting tube can facilitate the material to fall into the interior of the tubular protruding structure at the top of the movable tube.

[0012] As a preferred embodiment of this utility model, the conveying pipe is symmetrically arranged on both sides of the movable pipe with the center of the movable pipe as the reference, and the conveying pipe passes through the plate-like structure at both ends of the movable pipe; the movable pipe can drive the transmission plate to rotate.

[0013] As a preferred embodiment of this utility model, the bottom end of the connecting pipe is provided with a bending structure, and there are two material distribution pipes, which are respectively installed at the end of the bending structure of the connecting pipe below the movable pipe. The connecting pipe and the material distribution pipe are located inside the vertical furnace body; the connecting pipe facilitates the entry of materials into the material distribution pipe.

[0014] As a preferred technical solution of this utility model, the receiving hopper has a conical structure, the transmission plate has a spiral structure, and the center of the spiral and the center of the connecting bearing are in the same vertical line. The bottom end of the transmission plate is fixedly connected to the top surface of the top disc structure of the movable tube and extends upward into the inside of the receiving hopper. The transmission plate can drive the material to move downward.

[0015] Compared with the prior art, this utility model provides a vertical furnace with a reusable feeding structure, which has the following beneficial effects:

[0016] 1. This utility model features a movable tube with disc-shaped structures at both ends. The outer edge of the upper disc structure of the movable tube has a tubular protrusion. The movable tube is rotatably connected to the connecting bearing and the limiting tube via a limiting bearing. The drive motor is mirror-symmetrically mounted above the bottom disc structure of the movable tube with the center as the reference. The gear and the gear ring mesh with each other. The gear is driven by the drive motor fixed on both sides of the disc structure of the movable tube. When the drive motor drives the gear to rotate, the gear ring is fixed in position, and the gear will drive the movable tube to rotate at the same time. The transmission plate is spiral-shaped and its bottom end is fixedly connected to the movable tube. When the movable tube rotates, it will drive the transmission plate to rotate synchronously. The spiral transmission plate drives the material inside the receiving hopper to move downward, preventing the material from caking at the bottom of the conical receiving hopper.

[0017] 2. This utility model features a conveying pipe system. The conveying pipes are symmetrically arranged on both sides of the movable pipe with the center as the reference. The conveying pipes penetrate the plate-like structure at both ends of the movable pipe. The bottom end of the connecting pipe has a bending structure. There are two bulk material pipes, which are installed at the ends of the bending structures of the connecting pipes below the movable pipe. After being received by the receiving hopper, the material is driven by the receiving hopper and the transmission plate to enter the two connecting pipes below through the conveying pipes, and is discharged from the end of the bulk material pipe at the bottom of the connecting pipe into the vertical furnace. In this way, the two bulk material pipes are symmetrically distributed and share a receiving hopper, thereby reducing the center of gravity offset when the movable pipe rotates, and reducing the vibration generated when the movable pipe rotates. Attached Figure Description

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

[0019] Figure 2 This is a schematic diagram of the toothed ring mounting structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the installation structure of the bulk material pipe of this utility model;

[0021] Figure 4 This is a schematic diagram of the transmission plate mounting structure of this utility model;

[0022] The components are: 1. Vertical furnace; 11. Limiting tube; 12. Connecting bolt; 13. Gear ring; 14. Limiting bearing; 15. Connecting bearing; 16. Movable tube; 17. Drive motor; 18. Gear; 19. Limiting ring; 110. Conveying pipe; 111. Connecting pipe; 112. Bulk material pipe; 113. Receiving hopper; 114. Transmission plate. Detailed Implementation

[0023] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0024] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] Please see Figure 1 - Figure 4In this embodiment, a vertical furnace with a shared feeding structure includes: a vertical furnace 1, a limiting tube 11 fixedly installed at the upper end of the vertical furnace 1, a connecting bolt 12 inserted at the lower end of the limiting tube 11, a toothed ring 13 fixedly installed inside the limiting tube 11, a limiting bearing 14 fitted into the upper end of the limiting tube 11, a connecting bearing 15 fitted into the bottom end of the limiting tube 11, a movable tube 16 fitted into the limiting bearing 14 and the connecting bearing 15, a drive motor 17 fixedly installed on the left and right sides of the movable tube 16, a gear 18 fixedly installed at the end of the shaft of the drive motor 17, a limiting ring 19 fixedly installed at the top end of the limiting tube 11, a conveying pipe 110 provided inside the movable tube 16, a connecting pipe 111 fixedly installed at the bottom end of the movable tube 16, a material dispersing pipe 112 fixedly installed at the bottom end of the connecting pipe 111, a receiving hopper 113 fixedly installed above the limiting ring 19, and a transmission plate 114 fixedly installed above the movable tube 16.

[0027] The connecting bolt 12 is installed in a ring above the flange structure at the bottom end of the limiting tube 11, with the center of the limiting tube 11 as the reference. The connecting bolt 12 passes through the flange structure at the bottom end of the limiting tube 11 and is fixedly connected to the vertical furnace 1 at the bottom end. The upper and lower ends of the movable tube 16 are disc structures, and the outer edge of the upper disc structure of the movable tube 16 is provided with a tubular protrusion. The movable tube 16 is rotatably connected to the limiting tube 11 through the limiting bearing 14 and the connecting bearing 15. The drive motor 17 is mirror-symmetrically installed above the disc structure at the bottom end of the movable tube 16 with the center of the movable tube 16 as the reference. The gear 18 meshes with the gear ring 13. The inner diameter of the limiting ring 19 is smaller than the inner diameter of the tubular structure with protrusion on the outer edge of the disc structure at the top end of the movable tube 16. The bottom end of 19 does not contact the movable pipe 16. The conveying pipe 110 is symmetrically arranged on both sides of the movable pipe 16 with the center of the movable pipe 16 as the reference. The conveying pipe 110 passes through the plate-like structure at both ends of the movable pipe 16. The bottom end of the connecting pipe 111 is provided with a bent structure. There are two loose material pipes 112, which are respectively installed at the end of the bent structure of the connecting pipe 111 below the movable pipe 16. The connecting pipe 111 and the loose material pipe 112 are located inside the furnace body of the vertical furnace 1. The receiving hopper 113 has a conical structure. The transmission plate 114 has a spiral structure, and the spiral center and the center of the connecting bearing 15 are in the same vertical line. The bottom end of the transmission plate 114 is fixedly connected to the top surface of the top disc structure of the movable pipe 16 and extends upward into the inside of the receiving hopper 113.

[0028] Specifically, the drive motor 17 is model YST-7122. The vertical furnace 1 can heat the material. The limiting tube 11 is fixed to the top feed inlet of the vertical furnace 1 by the connecting bolt 12. The position of the movable tube 16 is limited and the movable tube 16 is allowed to rotate by the limiting bearing 14 and the connecting bearing 15 installed at the upper and lower ends of the limiting tube 11. Since the gear ring 13 and the gear 18 mesh with each other, the gear 18 is driven by the drive motor 17 fixed on both sides of the disc structure of the movable tube 16. When the drive motor 17 drives the gear 18 to rotate, since the position of the gear ring 13 is fixed, the gear 18 will drive the movable tube 16 to rotate at the same time. The material inside the receiving hopper 113 is fed through the symmetrically arranged conveying pipes 110 inside the movable tube 16. The material enters the connecting pipe 111 installed at the bottom of the movable pipe 16, and then enters the vertical furnace 1 through the dispersing pipe 112 at the bottom of the connecting pipe 111. The dispersing pipe 112 and the connecting pipe 111 are fixedly connected. The connecting pipe 111 and the movable pipe 16 are fixedly connected. When the movable pipe 16 rotates, it will drive the connecting pipe 111 and the dispersing pipe 112 to rotate synchronously, so that the material can be evenly distributed inside the vertical furnace 1. The material falling from the end of the conveyor belt is received by the receiving hopper 113. The transmission plate 114 is spiral and its bottom end is fixedly connected to the movable pipe 16. When the movable pipe 16 rotates, it will drive the transmission plate 114 to rotate synchronously. The spiral transmission plate 114 drives the material inside the receiving hopper 113 to move downward, preventing the material from caking at the bottom of the conical receiving hopper 113.

[0029] In use, the upper and lower ends of the movable tube 16 are disc structures, and the outer edge of the upper disc structure of the movable tube 16 is provided with a tubular protrusion. The movable tube 16 is rotatably connected to the limiting tube 11 via the limiting bearing 14, the connecting bearing 15, and the limiting tube 11. The drive motor 17 is mirror-symmetrically mounted above the bottom disc structure of the movable tube 16 with the center of the movable tube 16 as the reference. The gear 18 meshes with the gear ring 13. The gear 18 is driven by the drive motor 17 fixed on both sides of the disc structure of the movable tube 16. When the drive motor 17 drives the gear 18 to rotate, since the position of the gear ring 13 is fixed, the gear 18 will drive the movable tube 16 to rotate at the same time. The transmission plate 114 is spiral-shaped, and its bottom end is fixedly connected to the movable tube 16. When the movable tube 16 rotates, it will drive the transmission plate 114 to rotate synchronously. The spiral transmission plate 114 drives the receiving bucket 1 to rotate. The material inside the 13 moves downward to prevent it from caking at the bottom of the conical receiving hopper 113. The conveying pipe 110 is symmetrically arranged on both sides of the movable pipe 16 with the center of the movable pipe 16 as the reference, and the conveying pipe 110 passes through the plate-like structure at both ends of the movable pipe 16. The bottom end of the connecting pipe 111 is provided with a bent structure. There are two loose material pipes 112, which are respectively installed at the end of the bent structure of the connecting pipe 111 below the movable pipe 16. After the material is received by the receiving hopper 113, it will enter the two connecting pipes 111 below through the conveying pipe 110 under the drive of the receiving hopper 113 and the transmission plate 114, and be discharged from the end of the loose material pipe 112 at the bottom of the connecting pipe 111 into the vertical furnace 1. In this way, the two loose material pipes 112 are symmetrically distributed and share one receiving hopper 113, thereby reducing the center of gravity offset when the movable pipe 16 rotates, and reducing the vibration generated when the movable pipe 16 rotates.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A vertical shaft furnace with a shared charging structure, characterized in that, include: A vertical furnace (1) is provided, with a limiting tube (11) fixedly installed at its upper end. A connecting bolt (12) is inserted into the lower end of the limiting tube (11). A toothed ring (13) is fixedly installed inside the limiting tube (11). A limiting bearing (14) is fitted into the upper end of the limiting tube (11). A connecting bearing (15) is fitted into the bottom end of the limiting tube (11). A movable tube (16) is fitted into the limiting bearing (14) and the connecting bearing (15). A drive is fixedly installed on the left and right sides of the movable tube (16). The motor (17) has a gear (18) fixedly installed at the end of its shaft. The limiting tube (11) has a limiting ring (19) fixedly installed at the top. The movable tube (16) has a conveying tube (110) inside. The movable tube (16) has a connecting tube (111) fixedly installed at the bottom. The connecting tube (111) has a material dispensing tube (112) fixedly installed at the bottom. The limiting ring (19) has a receiving hopper (113) fixedly installed above it. The movable tube (16) has a transmission plate (114) fixedly installed above it.

2. A vertical shaft furnace with a shared charging structure according to claim 1, characterized in that: The connecting bolt (12) is installed in a ring above the flange structure at the bottom end of the limiting tube (11) with the center of the limiting tube (11) as the reference. The connecting bolt (12) passes through the flange structure at the bottom end of the limiting tube (11) and is fixedly connected to the vertical furnace (1) at the bottom end.

3. A vertical shaft furnace with a shared feeding structure according to claim 1, characterized in that: The upper and lower ends of the movable tube (16) are disc structures, and the outer edge of the upper disc structure of the movable tube (16) is provided with a tubular protrusion. The movable tube (16) is rotatably connected to the limiting bearing (14) and the connecting bearing (15) and the limiting tube (11).

4. A vertical shaft furnace with a shared charging structure according to claim 1, characterized in that: The drive motor (17) is mirror-symmetrically mounted above the bottom disc structure of the movable tube (16) with the center of the movable tube (16) as the reference. The gear (18) meshes with the gear ring (13). The inner diameter of the limiting ring (19) is smaller than the inner diameter of the protruding tubular structure on the outer edge of the top disc structure of the movable tube (16), and the bottom end of the limiting ring (19) does not contact the movable tube (16).

5. A vertical shaft furnace with a shared charging structure according to claim 1, characterized in that: The conveying pipe (110) is symmetrically arranged on both sides of the movable pipe (16) with the center of the movable pipe (16) as the reference, and the conveying pipe (110) passes through the plate-like structure at both ends of the movable pipe (16).

6. A vertical shaft furnace with a shared charging structure according to claim 1, characterized in that: The bottom end of the connecting pipe (111) is provided with a bending structure. There are two loose material pipes (112), which are respectively installed at the end of the bending structure of the connecting pipe (111) below the movable pipe (16). The connecting pipe (111) and the loose material pipe (112) are located inside the furnace body of the vertical furnace (1).

7. A vertical shaft furnace with a shared charging structure according to claim 1, characterized in that: The receiving hopper (113) has a conical structure, the transmission plate (114) has a spiral structure, and the center of the spiral is in the same vertical line as the center of the connecting bearing (15). The bottom end of the transmission plate (114) is fixedly connected to the top surface of the top disc structure of the movable tube (16) and extends upward into the interior of the receiving hopper (113).

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