Hydraulic tilting mechanism for automatic feeder of ore smelting furnace

Abstract

The application discloses a hydraulic tipping mechanism for an automatic feeding device of a mineral heat furnace, which comprises a supporting platform, a driving mechanism, a rotating shaft, a long rocker arm, a connecting rod and a chute. The driving mechanism comprises a hydraulic cylinder and a short rocker arm. The driving mechanism is installed on the supporting platform and connected with one end of the long rocker arm through the rotating shaft, and the other end of the long rocker arm is connected with the chute through the connecting rod. The application has the advantages that the horizontal design of the driving mechanism rationally utilizes the space and avoids the influence of the dust and high-temperature area, and the artificial filling mode is simulated to realize the automation of the device and reduce the labor.

Description

Technical Field

[0001] This invention relates to the field of charging process in submerged arc furnaces in the metallurgical industry, and particularly to a hydraulic tilting mechanism for an automatic feeder of a submerged arc furnace. Background Technology

[0002] Semi-enclosed electric arc furnaces are one of the main production equipment for smelting various alloys. The traditional feeding process is manual or semi-automatic feeding (manual levering). This method has problems such as high labor intensity, high labor costs, difficulty in recruiting workers, poor on-site ventilation, poor furnace stability, uneven feeding, and poor economic and technical indicators of electric furnaces. Therefore, it is necessary to design an automatic feeder to replace manual feeding.

[0003] The existing automatic feeder uses a motor directly connected to a worm gear, which works with a worm wheel for speed reduction. The worm wheel also works with a lifting screw with clearance. Through a series of speed reductions, the chute's swing motion and force requirements are finally achieved.

[0004] However, the above solution has the following drawbacks: the lifting screw that works with the turbine takes up a lot of space in the upper part of the device, and the space arrangement with the feeding mechanism at the top of the device is too compact, which affects subsequent maintenance, debugging, and modification. If the screw is shortened, the actual swing range of the chute will be limited, which will also affect the uniformity and rate of feeding. At the same time, the lifting structure operates directly in a high temperature and high dust environment. When dust enters the body, it will cause the operation of the equipment to be obstructed, the chute to swing poorly, the wear rate of parts to be high, and thus the service life of the equipment to be shortened.

[0005] In summary, there is a need for a drive mechanism for an automatic feeder in a submerged arc furnace that can achieve automatic feeding, make reasonable use of space, operate stably, and improve the overall service life during the smelting process of the submerged arc furnace. Summary of the Invention

[0006] In view of this, the present invention provides a hydraulic tilting mechanism for an automatic feeder of a submerged arc furnace, which can solve the above-mentioned problems of automatic feeding of submerged arc furnaces.

[0007] To this end, the present invention is implemented by the following technical solution.

[0008] A hydraulic tilting mechanism for an automatic feeder in a submerged arc furnace includes: a support platform, a drive mechanism, a rotating shaft, a long rocker arm, a connecting rod, and a chute; the drive mechanism includes: a hydraulic cylinder and a short rocker arm.

[0009] The upper surface of the support platform is provided with a lug structure and hinged to the mounting end of the hydraulic cylinder, and at least one set of the drive mechanism is mounted on the upper surface of the support platform;

[0010] The short rocker arm has a through hole at each end, one end of which is hinged to the end of the piston rod of the hydraulic cylinder, and the other end is fixedly connected to the rotating shaft.

[0011] The two ends of the rotating shaft are mounted on one end of the support platform through bearings and bearing supports, and its axial direction is perpendicular to the plane where the hydraulic cylinder 2 swings around the hinge of the lug structure.

[0012] A through hole is provided at each end of the long rocker arm. One end of the long rocker arm is fixedly connected to the rotating shaft, and the other end is hinged to the top of the connecting rod.

[0013] The upper front end of the chute is hinged to the lower surface of the support platform, and its rear end is hinged to the end of the connecting rod.

[0014] Furthermore, the drive mechanism consists of two sets, symmetrically distributed on both sides of the center line of the support platform.

[0015] Furthermore, the short rocker arm is fixedly connected to the rotating shaft via a spline.

[0016] Furthermore, the long rocker arm is fixedly connected to the rotating shaft via a flat key.

[0017] Furthermore, the long rocker arm and the short rocker arm are projected in a V-shape along the axial direction of the rotation axis.

[0018] Furthermore, along the axial direction of the rotation axis, the angle between the centerline of the long rocker arm and the centerline of the short rocker arm is 90°.

[0019] Furthermore, the hydraulic cylinder pressure supply device is an electric pump, and a flow measurement device is installed.

[0020] Furthermore, a hydraulic pressure measuring device is installed in the middle of the cylinder body of the hydraulic cylinder.

[0021] Furthermore, the hydraulic cylinder power supply motor pump is equipped with a differential pressure flow measurement device, and the hydraulic cylinder hydraulic pressure measurement device is specifically a flat diaphragm type pressure sensor.

[0022] Furthermore, two sets of the long rocker arms and the connecting rods are arranged in parallel and symmetrically on the rotating shaft.

[0023] Furthermore, the bearing for mounting the rotating shaft is a sliding bearing, and the corresponding bearing support is provided with an oil injection hole.

[0024] The present invention has the following advantages:

[0025] 1. This invention uses a hydraulic cylinder to drive a linkage mechanism, which in turn drives the chute to swing, mimicking the manual shovel feeding method, thus achieving automatic feeding, reducing the labor intensity of workers, and lowering production costs.

[0026] 3. This invention effectively utilizes space, reduces the occupation of upper space, and the relatively rearward design also keeps the moving mechanism away from high temperature and high dust areas, preventing the equipment from being contaminated by dust inside the furnace and affected by the high temperature inside the electric furnace, thus extending the service life of the equipment.

[0027] 4. This invention allows for flexible design of the length of each connecting pair, enabling a greater torque output to the chute swinging mechanism under the same power, reducing overload phenomena, and making the system operation more stable; it also simplifies the cost of later modifications.

[0028] Furthermore, the present invention also equips the electric pump with a flow measurement device and the hydraulic cylinder with a pressure detection device, and inputs the detected signals into the DCS system (distributed control system) to store these signals. Based on the stored data, the power can be intelligently controlled or the device fault can be effectively predicted. Attached Figure Description

[0029] It should be noted that the supporting platform and chute in the accompanying drawings are only partially shown, and are only intended to conveniently and clearly illustrate other structures of the present invention within a limited area. They are not actual shapes and should not be construed as limitations on the present invention.

[0030] Figure 1 This is a side view of the present invention;

[0031] Figure 2 This is a top view of Embodiment 1 of the present invention;

[0032] Figure 3 This is a schematic diagram of the structure in Embodiment 1 of the present invention;

[0033] Figure 4 This is a schematic diagram of the structure in Embodiment 2 of the present invention.

[0034] In the picture:

[0035] 1-Support platform; 2-Hydraulic cylinder; 3-Short rocker arm; 4-Long rocker arm; 5-Connecting rod; 6-Chutter. Detailed Implementation

[0036] In the description of this invention, it should be noted that the terms "upper surface," "lower surface," "upper," "top," "end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this invention is conventionally placed during use. These terms are used only for the convenience of describing this invention and for simplifying the description, and are not intended to 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 invention.

[0037] The invention will now be further described with reference to the accompanying drawings.

[0038] Example 1

[0039] A hydraulic tilting mechanism for an automatic feeder of a submerged arc furnace includes: a support platform 1, a drive mechanism, a rotating shaft, a long rocker arm 4, a connecting rod 5, and a chute 6; wherein the drive mechanism includes: a hydraulic cylinder 2 and a short rocker arm 3.

[0040] Support platform 1 is a disc-shaped, rotatable platform. (See attached...) Figure 1-3 The upper surface of the support platform 1 is symmetrically provided with two pairs of lug structures, which are hinged to the mounting end of the hydraulic cylinder 2 by pins. Preferably, the hydraulic cylinder 2 is designed with a motor pump as the pressure supply device and is equipped with a differential pressure flow measurement device. The middle cylinder body of the hydraulic cylinder 2 is equipped with a hydraulic pressure measurement device, specifically a flat diaphragm type pressure sensor. The upper surface of the support platform 1 is provided with two sets of drive mechanisms, and the two sets of drive mechanisms are connected in parallel with the rotating shaft.

[0041] The short rocker arm 3 has a through hole at each end. One end is hinged to the end of the piston rod of the hydraulic cylinder 2, and the other end has an internal spline through hole that is connected to the external spline of the rotating shaft. A retaining ring is installed at the shaft end for axial fixation. Its main purpose is to allow for quick adjustment of the relative installation angle of the short rocker arm 3.

[0042] like Figure 2 , 3 As shown, the rotating shaft is fixed to the bearing support by bearings near both ends and can rotate relative to each other;

[0043] The preferred design is that the bearing for mounting the rotating shaft is a sliding bearing, and the corresponding bearing support is provided with an oil filling hole. The bearing support is installed on the outer edge side of the support platform 1. Specifically, the axial direction of the rotating shaft is perpendicular to the plane formed by the swing of the hydraulic cylinder 2 around the hinge of the lug structure, and is integrated into the bearing support. Figure 2 , 3 The image shows two sets of drive mechanisms and rotating shafts arranged in a U-shape.

[0044] The long rocker arm 4 has a through hole at each end, preferably designed as follows: Figure 2 , 3 As shown, one end of it is fitted onto the rotating shaft, located in the middle position, and is fixed relative to the rotating shaft by a flat key. The other end is hinged to the top of the connecting rod 5 by a pin.

[0045] The preferred design is that the long rocker arm 4 and the short rocker arm 3 are projected in a V-shape along the axial direction of the rotation axis, and further, the included angle between their center lines is 90°.

[0046] like Figure 1 As shown, the upper front end of the chute 6 is hinged to the fixed object on the lower surface of the support platform, and can rotate around its axis. Its rear end is hinged to the end of the connecting rod 5 through a pin.

[0047] Example 2

[0048] The difference between this embodiment and Embodiment 1 is that, Figure 4 As shown, two sets of long rocker arms 4 and connecting rods 5 are arranged in parallel and symmetrically on the rotating shaft. Both the long rocker arms 4 and the rotating shaft are fixed with flat keys. Figure 1 As shown, the upper front end of the chute 6 is hinged to the fixed object on the lower surface of the support platform, and can rotate around its axis. Its rear end is hinged to the ends of two connecting rods 5 on both sides.

[0049] Working principle:

[0050] The extension and retraction of the output shaft of hydraulic cylinder 2 will cause the hinged short rocker arm 3 to swing back and forth. Since the short rocker arm 3 is splined to the rotating shaft, the rotating shaft rotates and simultaneously drives the long rocker arm 4 to swing back. As the long rocker arm 4 swings, it will cause the connecting rod 5 to move vertically. Since the chute 6 can only rotate around the front rotating shaft, the chute 6 swings to a certain extent under the action of the connecting rod 5, thereby simulating the way materials are added to the reactor by manually shoveling them into the furnace.

[0051] The above specific embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to examples, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A hydraulic tilting mechanism for an automatic feeder of a submerged arc furnace, comprising: Support platform (1), drive mechanism, rotating shaft, long rocker arm (4), connecting rod (5), chute (6); the drive mechanism includes: hydraulic cylinder (2) and short rocker arm (3); The support platform (1) is characterized by having a lug structure on its upper surface and hinged to the mounting end of the hydraulic cylinder (2), and at least one set of the drive mechanism is mounted on the upper surface of the support platform (1); the short rocker arm (3) has a through hole at each end, one end of which is hinged to the end of the piston rod of the hydraulic cylinder (2), and the other end is fixedly connected to the rotating shaft. The two ends of the rotating shaft are installed on one end of the support platform (1) through bearings and bearing supports, and its axial direction is perpendicular to the plane where the hydraulic cylinder (2) swings around the hinge of the lug structure. The long rocker arm (4) has a through hole at each end. One end of the long rocker arm (4) is fixedly connected to the middle position of the rotating shaft, and the other end is hinged to the top of the connecting rod (5). The upper front end of the chute (6) is hinged to the lower surface of the support platform, and its rear end is hinged to the end of the connecting rod (5); the support platform (1) is provided with an opening slot to avoid the connecting rod (5); During operation, the hydraulic cylinder (2) drives the short rocker arm (3) to swing back and forth, thereby rotating the rotating shaft and driving the long rocker arm (4) to swing back. The long rocker arm (4) drives the connecting rod (5) to move in the vertical direction. The connecting rod (5) drives the chute (6) to swing to a certain extent, thereby simulating the way that the material is added into the reactor by manually shoveling the material into the furnace. The hydraulic cylinder (2) is supplied with a motor pump. A flow measurement device is installed on the motor pump, and a pressure detection device is installed in the middle section of the hydraulic cylinder. The detected signals are input into the DCS system and stored. Based on the stored data, the power can be intelligently controlled or the device fault can be effectively predicted.

2. The hydraulic tilting mechanism for an automatic feeder of an ore smelting furnace according to claim 1, characterized by The driving mechanism consists of two sets, symmetrically distributed on both sides of the center line of the support platform (1).

3. The hydraulic tipping mechanism for an automatic feeder of an ore smelting furnace according to claim 1, characterized in that, The short rocker arm (3) is fixedly connected to the rotating shaft via a spline.

4. The hydraulic tipping mechanism for an automatic feeder of an ore smelting furnace according to claim 1, characterized in that, The long rocker arm (4) is fixedly connected to the rotating shaft by a flat key.

5. The hydraulic tipping mechanism for an automatic feeder of an ore smelting furnace according to claim 1, characterized in that, The long rocker arm (4) and the short rocker arm (3) are projected in a V-shape along the axial direction of the rotation axis.

6. The hydraulic tipping mechanism for an automatic feeder of an ore smelting furnace according to claim 5, characterized in that, Along the axial direction of the rotation axis, the center line of the long rocker arm (4) and the center line of the short rocker arm (3) form an angle of 90°.

7. The hydraulic tilting mechanism for the automatic feeder of a submerged arc furnace according to claim 1, characterized in that, Two sets of long rocker arms (4) and connecting rods (5) are arranged in parallel and symmetrically on the rotating shaft.

8. The hydraulic tipping mechanism for an automatic feeder of an ore smelting furnace according to claim 1, characterized in that, The bearing used for mounting the rotating shaft is a sliding bearing, and the corresponding bearing support is provided with an oil injection hole.

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