Metallurgical furnace charge screening device

Abstract

The utility model discloses a metallurgical furnace burden screening device which comprises a support, an angle-adjustable base is arranged on the support, supporting springs are fixed to the four corners of the base respectively, a screening box is fixed to the supporting springs, two symmetrical limiting plates are fixed to the left side wall and the right side wall of the screening box respectively, a limiting column is vertically fixed to each limiting plate, and the limiting columns are arranged on the limiting plates. Limiting columns penetrate through the limiting plates, the two ends of each limiting column are sleeved with second supporting springs, four sets of limiting frames are fixed to the base, each set of limiting frames comprises two limiting frames, the limiting columns penetrate through limiting holes in the corresponding set of limiting frames, a feeding port and a discharging port are formed in the screen box, and a vibration motor is fixed to the bottom of the screen box. The combined design of the limiting plate, the second supporting spring and the limiting frame is adopted, on the basis that reciprocating vibration of the screen box is not affected, rebound reciprocating motion is assisted, supporting can be provided for the screen box when the screen box inclines, loss of the supporting spring in the vibration direction is reduced, and safety is higher.

Description

TECHNICAL FIELD

[0001] The utility model relates to chemical industry waste gas treatment equipment field especially relates to a metallurgical furnace burden screening device. BACKGROUND

[0002] Metallurgical technology is to extract metal and metal compound from ore, and then make metal material with certain performance by various methods. Metallurgical furnace burden usually contains iron ore, scrap steel, pig iron, coke, ferroalloy, etc. It is an important additive in the steelmaking process. In the whole steelmaking process, different sources of oxygen are used to oxidize the complex metals contained in the burden. Various complex processes are used to remove silicon, phosphorus, carbon, deoxidation and alloying substances by using good metallurgical furnace burden.

[0003] After smelting, the smelted burden, slag and the like need to be recycled. First, it enters the primary crusher and is crushed into smaller particles. Then, it is screened by screens with different apertures to prepare for the following sorting and chemical treatment. The traditional metallurgical furnace burden screening device generally uses an inclined screen structure to screen by gravity rolling or uses a linear vibrating screen to screen the burden. The former has fast screening and large processing capacity, but mostly can only perform one-stage screening and cannot complete multi-stage screening. It needs to be separated repeatedly on the screen structure by using a conveying structure multiple times, which is time-consuming and labor-intensive. The latter can perform multi-stage screening, but the linear vibrating screen is generally horizontally arranged, the feeding capacity is limited, the feeding port is prone to accumulation, and the efficiency is limited. This is a problem. UTILIZATIONAL CONTENT

[0004] In order to make up for the above shortcomings, the utility model provides a metallurgical furnace burden screening device which is improved on the basis of the original linear vibrating screen. The screen box can adjust the inclination angle, reduce the accumulation of the feeding port, and improve the screening efficiency.

[0005] The utility model is realized by the following technical schemes:

[0006] A metallurgical furnace burden screening device, comprising a support, characterized in that: an angle-adjustable base is arranged on the support, four supporting springs are fixed on the four corners of the base respectively, a screen box is fixed on the supporting springs, two symmetrical limiting plates are fixed on the left and right side walls of the screen box respectively, a limiting column is vertically fixed on the limiting plates, the limiting column passes through the limiting plates and is equal in length on both sides, second supporting springs are sleeved on both ends of the limiting column, four groups of limiting frames are fixed on the base, each group of limiting frames comprises two, limiting holes are formed in the limiting frames, the limiting column is arranged in the limiting holes of each group of limiting frames, a feeding port is formed in the screen box, a discharging port is formed in the tail of the screen box, and a vibrating motor is fixed to the bottom of the screen box.

[0007] Further optimization, the screen box is fixed with 2 layers of horizontal screen, 2 layers of screen box is divided into 3 layers of space.

[0008] Further optimization, the screen box is fixed with 2 layers of horizontal screen, 2 layers of screen box is divided into 3 layers of space.

[0009] Further optimization, one end of the base is hinged on the support, the support is further hinged with two supporting cylinders, the output end of the supporting cylinder is hinged on the bottom of the other end of the base, and the supporting cylinder is used for adjusting the inclination angle of the base, and the angle range is 0-12 degrees.

[0010] Further optimization, the two sides of the support are hinged with two telescopic supporting rods, and the top end of the telescopic supporting rod is hinged on the two sides of the base.

[0011] Further optimization, the bottom of the screen box is fixed with a motor base, and the vibration motor is fixed on the motor base.

[0012] Further optimization, a gap is formed in the middle position of the base.

[0013] The beneficial effects of the utility model are:

[0014] In the novel, the bottom of the screen box is fixed with a vibration motor, and the screen box is provided with multiple layers of screen, and the screen box is reciprocatingly linearly vibrated under the action of the motor, the material is thrown and jumped on the screen surface and linearly moves forward, and multi-stage screening is completed, and the material is discharged from the discharge port.

[0015] The angle of the screen box can be adjusted in advance according to the type of furnace charge and the amount of feed. In order to quickly reciprocate, the screen box and the base are connected by supporting springs, so the screen box is generally horizontally arranged, and the supporting spring on the side of the screen box is increased when the screen box is inclined. Therefore, the combination of the limiting plate, the second supporting spring and the limiting frame is provided in the novel, and the screen box is assisted when the screen box is inclined, so that the loss of the supporting spring caused by the inclination of the screen box is avoided.

[0016] In the novel, the limiting plate, the second supporting spring and the limiting frame are arranged, the limiting plate on the screen box is strongly reciprocated between each group of limiting frames, the second supporting spring assists the elastic reciprocating motion, the loss of the supporting spring is reduced, and the safety is higher. DRAWINGS

[0017] Figure 1 It is a three-dimensional structure schematic diagram of the utility model.

[0018] Figure 2 It is a three-dimensional structure schematic diagram of the utility model Figure Two .

[0019] Figure 3 The front view of the utility model.

[0020] Figure 4 As Figure 1 The enlarged view of A in the middle.

[0021] Figure 5 The utility model

[0022] In the drawing: 1, support; 11, support cylinder; 12, telescopic support rod; 2, base; 21, support spring; 22, limiting frame; 23, notch; 3, sieve box; 31, feed inlet; 32, discharge outlet; 33, motor base; 331, vibration motor; 34, limiting plate; 35, screen; 4, limiting column; 41, second support spring. DETAILED DESCRIPTION

[0023] In order to clearly illustrate the technical features of the present application, the following will be described in detail through specific embodiments, and in conjunction with the accompanying drawings. In the description of the present application, it should be noted that the orientation or position relationship indicated by the terms "left", "right", "front", "back", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0024] As Figures 1-5 shown, the utility model provides a metallurgical furnace charge screening device, including support 1, be equipped with adjustable angle base 2 on the support, one support spring 21 is fixed on the 4 corners of base respectively, the support spring is fixed with sieve box 3, two symmetrical limiting plates 34 are fixed on the left and right side walls of sieve box 3 respectively, one limiting column 4 is vertically fixed on the limiting plate, the limiting column passes through limiting plate 34, and both sides are equal in length, the both ends of limiting column 4 are all equipped with second support spring 41, four groups of limiting frames 22 are fixed on base 2, and each group includes two, limiting hole is formed in the limiting frame, limiting column 4 is arranged in the limiting hole on each group of limiting frame 22, feed inlet 31 is formed in sieve box 3, discharge outlet 32 is formed in the tail of sieve box 3, and vibration motor is fixed at the bottom of sieve box 3.

[0025] When working, sieve box 3 makes strong reciprocating linear vibration under the action of motor, material is thrown on the sieve surface and makes linear motion forward in a jumping way, and multiple-stage screening is completed, and is discharged from discharge outlet. Limiting plate 34 on sieve box 3 makes strong reciprocating vibration between each group of limiting frame 22, and second support spring 41 assists the reciprocating motion of rebound, so that the loss of support spring 21 is reduced, and the safety is higher.

[0026] As a preferred embodiment, two layers of horizontal screen mesh 35 are fixed in the screen box 3, and the two layers of screen mesh 35 divide the screen box into three layers of space for three-stage screening. Of course, three or four layers of screen mesh can also be provided in actual production to perform more stages of screening.

[0027] As a preferred embodiment, three discharge ports 32 are provided at the ends of the screen box 3, each discharge port 32 corresponding to a layer of space, and the discharge ports 32 are staggered to facilitate the discharge and conveying.

[0028] As a preferred embodiment, as shown in Figure 2 The other end of the base 2 is hingedly connected to the support 1, and two support cylinders 11 are also hingedly connected to the support 1, with the output ends of the support cylinders 11 being hingedly connected to the bottom of the other end of the base 2. The support cylinders 11 are used to adjust the inclination angle of the base, and the angle range is 0-12 degrees. In actual production, the inclination angle is adjusted in advance according to different furnace charges and feeding amounts. In order to enable the screen box in the linear vibrating screen to quickly reciprocate, the screen box and the base are generally connected by a support spring in a soft manner. Therefore, the screen box is generally arranged horizontally, and the inclined arrangement will increase the wear of the support spring on one side. Therefore, the present application provides a combination of a limiting plate, a second support spring, and a limiting frame to assist in supporting the screen box when it is inclined, thereby avoiding the wear of the support spring caused by the inclination of the screen box.

[0029] As a preferred embodiment, one telescopic support rod 12 is hingedly connected to each side of the support 1, and the top ends of the telescopic support rods 12 are hingedly connected to the two sides of the base 2. When the base is adjusted to be raised, the telescopic support rods 12 assist in fixing and supporting the base.

[0030] As a preferred embodiment, a motor base 33 in the shape of an inclined platform is fixed to the bottom of the screen box 3, and a vibrating motor 331 is fixed to the motor base 33. The vibrating motor generally includes two vibrating motors. When the two vibrating motors rotate synchronously and in opposite directions, they drive the screen box to perform linear reciprocating vibration along the direction of the base. The two motor shafts have an inclination angle relative to the screen surface. Under the combined action of the exciting force and the gravity of the material, the material is thrown and jumps forward on the screen surface to perform linear motion, thereby achieving the purpose of screening and grading the material.

[0031] As a preferred embodiment, a gap 23 is provided at the middle position of the base 2 to facilitate the installation and operation of the motor base and the vibrating motor.

[0032] The novel type adopts the combined design of the limiting plate, the second supporting spring and the limiting frame, on the basis of not influencing the reciprocating vibration of the screen box, the reciprocating motion is assisted to rebound, the loss of the supporting spring in the vibration direction is reduced, the safety is higher, in addition, the design can provide support for the screen box when the screen box is inclined, the screen box is freely inclined, and the supporting spring is not damaged.

[0033] The utility model is not detailed, all are the known technology of the technical personnel in the art. Finally, it is explained that the above embodiment is only used to explain the technical scheme of the utility model and is not limited. Although the utility model is described in detail with reference to the preferred embodiment, those skilled in the art should understand that the technical scheme of the utility model can be modified or replaced, without departing from the purpose and scope of the utility model technical scheme, which should be covered in the claim range of the utility model.

Claims

1. A metallurgical charge screening apparatus comprising a support, characterised in that: The support is provided with an angle-adjustable base, four supporting springs are fixed on four corners of the base respectively, a screen box is fixed on the supporting springs, two symmetrical limiting plates are fixed on left and right side walls of the screen box respectively, a limiting column is vertically fixed on the limiting plates, the limiting column passes through the limiting plates and is equal in length on both sides, second supporting springs are sleeved on both ends of the limiting column, four groups of limiting frames are fixed on the base, each group of limiting frames includes two, limiting holes are formed in the limiting frames, the limiting column passes through the limiting holes on each group of limiting frames, An inlet is formed in the screen box, an outlet is formed in the tail of the screen box, and a vibration motor is fixed to the bottom of the screen box.

2. A metallurgical charge screening apparatus according to claim 1, characterised in that: Two layers of horizontally arranged screens are fixed in the screen box, and the two layers of screens divide the screen box into three layers of space.

3. A metallurgical charge screening apparatus according to claim 2, characterised in that: Three outlets are formed in the tail end of the screen box, each outlet corresponds to a layer of space, and the outlets are staggered.

4. The metallurgical charge screening apparatus of claim 1, wherein: One end of the base is hinged to the support, two supporting cylinders are also hinged to the support, the output ends of the supporting cylinders are hinged to the bottom of the other end of the base, the supporting cylinders are used to adjust the inclination angle of the base, and the angle range is 0-12 degrees.

5. A metallurgical charge screening apparatus according to claim 4, wherein: One end of the base is hinged to the support, two supporting cylinders are also hinged to the support, the output ends of the supporting cylinders are hinged to the bottom of the other end of the base, the supporting cylinders are used to adjust the inclination angle of the base, and the angle range is 0-12 degrees.

6. The metallurgical charge screening apparatus of claim 1, wherein: Two telescopic supporting rods are hinged to the two sides of the support, and the top ends of the telescopic supporting rods are hinged to the two sides of the base.

7. The metallurgical charge screening apparatus of claim 1, wherein: The bottom of the screen box is fixed with an inclined motor base, and the vibration motor is fixed on the motor base. An opening is formed in the middle position of the base.

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