Back baffle device of PS converter

Abstract

The utility model relates to a back baffle device of a PS (polystyrene) converter, which aims to solve the technical problem that the failure rate is high when an existing baffle is driven by an electro-hydraulic push rod, and adopts the technical scheme that the back baffle device comprises an upper baffle, a lower baffle, two support rods, a plurality of balancing weights and a plurality of nuts, the lower baffle is positioned at the lower end of the upper baffle, and the lower baffle and the upper baffle are of an integrated structure; the two supporting rods are arranged on the upper baffle in parallel, the front ends of the supporting rods are connected with the upper baffle through nuts, the balancing weight is arranged at the rear ends of the supporting rods through nuts, the top face of the upper baffle is hinged to the lower portion of a rear water jacket of a flue through a pin shaft base and a pin shaft, the lower baffle makes contact with the outer side wall of a furnace body, and the device directly faces a furnace opening of the furnace body. Opening and closing operation of the baffle device can be achieved by increasing or reducing the number of the weight stacks, the whole process is easy to operate, faults cannot be generated in the whole process due to the severe working environment, production is prevented from being affected by faults of the electric-hydraulic push rod, maintenance is not needed in the working process, and the production cost is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of metallurgical equipment technology, specifically relating to a PS converter furnace rear baffle device. Background Technology

[0002] The horizontal PS converter has a 2-5cm thick steel plate shell and is lined with magnesia bricks and magnesia-chrome bricks. A furnace opening is located in the middle of the furnace body for feeding, fume extraction, slag removal, and copper tapping. A row of tuyeres is installed horizontally on one side of the furnace body to blow in compressed air. The entire furnace body is supported by rollers and rotates in both directions around a horizontal axis via a drive device, positioning the furnace opening to a suitable position for feeding, blowing, slag removal, and copper tapping.

[0003] There is an ascending flue between the converter and the waste heat boiler, which is entirely composed of water jackets. The front, left, and right side walls of the water jackets are vertical, making them less prone to coking. The rear side wall of the water jacket is closer to the furnace opening, forming an angle of 72° with it. In actual production, the converter splashes quite heavily, with most of the splashed material remaining on the rear water jacket and a small portion entering the boiler. A vibrating motor is installed on the rear water jacket to facilitate timely cleaning of coke deposits. A movable baffle is installed at the bottom of the rear water jacket to prevent coke from falling and injuring people or hitting the tuyeres, and to ensure a seal with the furnace body. Originally, the movable baffle was driven by an electro-hydraulic actuator, but due to the harsh working environment, the electro-hydraulic actuator had a high failure rate, high maintenance costs, and affected production efficiency. To meet production needs, a more convenient baffle device needs to be redesigned. Utility Model Content

[0004] The purpose of this invention is to solve the above problems and provide a PS converter rear baffle device.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] A PS converter furnace rear baffle device includes an upper baffle, a lower baffle, two support rods, several counterweights, and several nuts. The lower baffle is a backward-curved arc structure located at the lower end of the upper baffle, and the two are integrally formed. The two support rods are vertically aligned and pass through the upper baffle in parallel. The front end of the support rods is connected to the upper baffle via nuts. The counterweights consist of several counterweight plates and are set at the rear end of the support rods via nuts. The top surface of the upper baffle is provided with several pin seats. The PS converter furnace rear baffle device is hinged to the lower part of the rear water jacket of the flue via the pin seats and pins, and the lower baffle is in contact with the outer wall of the furnace body. The PS converter furnace rear baffle device faces the furnace opening of the furnace body.

[0007] Furthermore, a reinforcing rib is provided between the support rod and the upper baffle.

[0008] Compared with the prior art, the beneficial effects of this utility model are:

[0009] 1. This utility model utilizes leverage to open and close the baffle device by increasing or decreasing the number of counterweights. The entire process is simple to operate and does not involve complex electrical devices. It will not malfunction due to harsh working environments, avoids production disruptions caused by electro-hydraulic actuator failures, and requires no maintenance during operation, thus reducing production costs.

[0010] 2. The support rod of this utility model is reinforced by reinforcing ribs, which enhances its stability;

[0011] 3. All parts of this utility model are made from waste scraps, resulting in a simple structure, low cost, easy operation, and high safety. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the installation structure of this utility model;

[0013] Figure 2 This is a cross-sectional schematic diagram of the present invention;

[0014] Figure 3 This is a first-view structural diagram of the present invention;

[0015] Figure 4 This is a schematic diagram of the second-view structure of the present invention;

[0016] In the diagram: 1. Flue; 2. Rear water jacket; 3. Furnace body; 4. Upper baffle; 5. Lower baffle; 6. Support rod; 7. Counterweight; 8. Pin seat; 9. Reinforcing rib; 10. Nut. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] like Figures 1-4 As shown, a PS converter furnace rear baffle device includes an upper baffle 4, a lower baffle 5, two support rods 6, several counterweights 7, and several nuts 10. The lower baffle 5 is a backward-curved arc structure located at the lower end of the upper baffle 4, and the two are an integral structure. The two support rods 6 are arranged vertically and parallel to each other, passing through the upper baffle 4. The front end of the support rod 6 is connected to the upper baffle 4 through the nuts 10. A reinforcing rib 9 is provided between the support rod 6 and the upper baffle 4 to improve the stability of the support rod 6. The counterweights 7 are composed of several counterweight pieces and are set at the rear end of the support rods 6 through the nuts 10. Several pin seats 8 are provided on the top surface of the upper baffle 4. The PS converter furnace rear baffle device is hinged to the lower part of the rear water jacket 2 of the flue 1 through the pin seats 8 and the pin shaft. The lower baffle 5 is in contact with the outer wall of the furnace body 3. The PS converter furnace rear baffle device is directly opposite the furnace opening of the furnace body 3.

[0019] The working process of the utility model:

[0020] The utility model uses, according to production demand, sets up several counterweight pieces to form counterweight block 7 in the rear of support rod 6, then fixes it with nut 10, after fixing, the device is under the gravity of counterweight block 7, and the whole is articulated and rotates around pin shaft seat 8, and lower baffle 5 pushes against furnace body 3, makes flue 1 be in closed state, can prevent the coke block produced in furnace mouth from falling and hurting people or hitting on the machine of poking air hole simultaneously, when the coke block produced in furnace mouth gathers too much in upper baffle 4, and makes its weight increase, just need to increase the weight of counterweight block 7 appropriately to make it keep closed state, when needing to concentrate the processing of coke block, the weight of counterweight block 7 is reduced by reducing the number of counterweight piece correspondingly, and support rod 6 rear end can be opened by operating personnel lifting, after the processing of coke block, put down support rod 6, increase the number of counterweight piece in its tail, and under the action of lever, upper baffle 4 and lower baffle 5 are closed, make flue 1 be in closed state.

Claims

1. A post-converter damming device, characterized in that, It includes upper baffle (4), lower baffle (5), two support rods (6), several counterweights (7) and several nuts (10), the lower baffle (5) is curved arc structure to the rear, is located in the lower end of upper baffle (4), and both are integral structure, the two support rods (6) are perpendicular and pass through upper baffle (4) parallelly arranged, the front end surface of support rod (6) is connected with upper baffle (4) through nut (10), the counterweight (7) is composed of several counterweight pieces, is arranged at the rear end of support rod (6) through nut (10), the top surface of upper baffle (4) is equipped with several pin shaft seats (8), the PS converter rear baffle device is hinged with pin shaft in the lower part of back water jacket (2) of flue (1) through pin shaft seat (8), and the lower baffle (5) is in contact with the outside wall of furnace body (3), and the PS converter rear baffle device is opposite to the furnace mouth of furnace body (3).

2. A post-converter damming device according to claim 1, characterized in that Reinforcing ribs (9) are arranged between the support rod (6) and the upper baffle (4).

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