CN2307794Y

CN2307794Y - String of pot type blast furnace top equipment

Info

Publication number: CN2307794Y
Application number: CN 97224176
Authority: CN
Inventors: 夏宁
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-08-13
Filing date: 1997-08-13
Publication date: 1999-02-17
Anticipated expiration: 2007-08-13

Abstract

The utility model discloses special equipment of a material feeding system for an ironmaking blast furnace, and specifically discloses string of pot type furnace roof equipment for a blast furnace. The utility model is characterized in that a material feeding tank is a fixed type material feeding tank; a device which can realize the requirement of ironmaking processes for material flow of a homogeneous layer is designed and installed at the center position of the material feeding tank and is fixed between the upper part of the material feeding tank and the lower part of a blanking opening at the head part of charging equipment; a weighing device which only accurately weighs the fixed material feeding tank and furnace charge in the tank is installed on the fixed material feeding tank. The utility model has the advantages of economy and utility, simplicity, and reliability. The utility model conforms to the practical requirements of the blast furnace in china.

Description

Tandem tank type blast furnace furnace roof equipment

The utility model relates to a kind of specific equipment of iron-smelting blast furnace feeding system, relates in particular to adopt seal valve to carry out boiler roof sealing, and the rotation distributor chute carries out the tandem tank type furnace roof equipment of cloth.

From the eighties mid-term, China is successively at Baosteel 2 blast furnaces, new No. 3 blast furnaces of Wuhan Iron and Steel Plant, all introducing on No. 11 blast furnaces of Anshan iron and steel plant and No. 1 blast furnace of Ma Gangxin and having used state-of-the-artly in the world today does not have bell furnace roof equipment by design of Luxembourg state PW company and the rotation hopper tandem tank type made, is called for short BLT as shown in Figure 1.

No bell furnace roof equipment is to adopt seal valve to carry out boiler roof sealing, and the rotation distributor chute carries out the furnace roof equipment of cloth.

Because of requiring equipment design, must accomplish iron-smelting process into the materials flow of furnace charge uniform bed, in design during batch can, result through relevant expert's repetition test shows, solid accumulation is a double hump shape in last batch can, under the effect of middle insert, just can satisfy the requirement of iron-smelting process again, institute thinks and achieves the above object, and will go up batch can and be designed to the form of rotatablely moving.

Can finish desired action when rotated for making other annexes such as material loading lock of going up on the batch can with rotation, batch can loam cake central part is installed a multiloop hydraulic gyration joint in rotation, can transmit between the motion interface of static interface and turning unit to guarantee hydraulic efficiency oil and automatically controlled signal.

BLT equipment is the following common problem of ubiquity in actual use:

1 owing to making and reason such as installation, and it is short to make that hydraulic circuit joint life-span on batch can top is gone up in rotation, causes rotation to go up batch can and can not normally rotate, can't satisfy the demand of technological design and actual production.

2 because the last batch can dead weight of rotation is big, and the material of adding about the interior 50M of hopper rotates with hopper all.Though the speed of rotation is unhappy, it is still very big to rotate dynamic torque and inertia, and required transmission rig is big, and energy expenditure is many, and it installs the basis---the design strength requirement of supporting ring beam is just high, makes difficulty, invests to increase.

The weighing device of 3 materials is to be bound up with blanking tank, and the same clack box of blanking tank, corrugated tube and all miscellaneous equipment such as pressure be associated in together, the entire equipment deadweight is just big like this, makes the weighing ability of weighing pressure head will select large-scale.In addition, be flexible coupling though each outside adjacent parts all has corrugated tube to do, the fluctuation of the rigidity of corrugated tube and blanking tank internal pressure has influenced the accuracy of weighing value, causes actual weight error value of going into furnace charge and weighing numerical value overproof.

The purpose of this utility model is under the prerequisite that satisfies the blast furnace manufacturing technique requirent fully, there is not the improvement of bell furnace roof equipment by BLT to the design of PW company, design a kind of promptly economic use, the simple and reliable again tandem tank type blast furnace furnace roof equipment that meets the actual requirement of China's blast furnace.

The purpose of this utility model is achieved by the following technical solution: will go up batch can and be designed to fixed; On fixing between the bottom of batch can top and charging equipment head blanking port, one of the central position design and installation of last batch can with on the revolving top of chute; Weighing device is installed in fixing going up on the batch can.

The purpose of this utility model also can realize like this: on fixing between the bottom of batch can top and charging equipment head blanking port, and bell of the central position design and installation of last batch can.

The utility model is compared with traditional blast furnace furnace roof equipment has following advantage:

Batch can is fixed on 1, so just need not to adopt again the bearing of band bull gear of the hydraulic gyration joint of import and φ 6000mm and relevant transmission rig and parts, promptly reducing investment reduces weight of equipment again and the inner frame load is alleviated, the manufacturing accuracy of equipment requires to reduce, and has also reduced in the daily production maintenance capacity to hopper simultaneously.

2 since the material that revolving top only can drive by part in the last chute rotate, thereby rotary torque is little, transmission rig is simple, and can be with top chute movement velocity, following chute in direction and Position Design and the stove is the same, distributor chute movement velocity under so just can getting information about in the stove, direction and position bring great convenience to production and maintenance.

3 weighing devicees are gone up the weight of furnace charge in batch can deadweight and the last batch can and are not had the interference of any peripheral equipment again because of a weighing is fixing, so the weighing ability of the weighing pressure head in the weighing device is optional small-sized, and guarantee that weighing is very accurate.

The utility model is described in further detail below in conjunction with drawings and Examples:

Fig. 1 is the sectional view of the tandem tank type blast furnace bell-less furnace roof equipment commonly used.

Fig. 2 a is the structure sectional view of the utility model embodiment one.

Fig. 2 b is the structure sectional view of the utility model embodiment two.

Fig. 3 a is the structure iron of last chute.

Fig. 3 b is the another kind of structure iron of last chute.

Fig. 4 is the structure iron of weighing device.

Tandem tank type blast furnace furnace roof equipment mainly is made up of last batch can 1, material loading lock 3, supporting ring beam 5, equal purge valve 6, upper sealing valve 7, blanking tank 8, clack box 9, lower seal valve 10, following material flow gate 11, corrugated expansion joint 12, glasses valve 13, chute transmission gear box 14, stock rod 15, support steel structure 16, distributor chute 18, charging equipment head 19 etc.Among the embodiment one, to go up batch can 1 is fixedly mounted on the weighing device 21, and on fixing between the bottom of the blanking port of the top of batch can 1 and charging equipment head 19, last chute revolving top 20 of the central position design and installation of last batch can 1 with last chute 20a, like this, all the same batch cans 1 such as blanking tank 8, clack box 9, corrugated expansion joint 12, distributor chute 18 are thrown off fully, thereby have guaranteed weighing precision.

Among the embodiment two, between the bottom of the blanking port of the top of batch can 1 and charging equipment head 19, bell 23 of the central position design and installation of last batch can 1 satisfies processing requirement on fixing, and the design and installation of other each parts are with Fig. 2 a.

The design of last chute revolving top 20 is made of distributor transmission rig 20b and last chute 20a shown in Fig. 3 a, 3b, wherein goes up the design of chute 20a and can adopt " one " font and " eight " font.

Weighing device shown in Figure 4 mainly is made up of weighing device upper support beam 22 and weighing pressure head 24 etc.Last batch can 1 is fixedly mounted on the weighing pressure head 24 by upper support beam 22, and upward batch can 1, upper support beam 22 and weighing pressure head 24 are fixedly mounted on the supporting ring beam 5 together.

Claims

1 one kinds of tandem tank type blast furnace furnace roof equipment comprise batch can, and blanking tank etc. is characterized in that: described upward batch can is fixed.

2 tandem tank type blast furnace furnace roof equipment according to claim 1 is characterized in that: between the bottom of batch can top and charging equipment head blanking port, the centre bit of batch can is equipped with one with the revolving top of going up chute on fixing.

3 tandem tank type blast furnace furnace roof equipment according to claim 1 is characterized in that: between the bottom of batch can top and charging equipment head blanking port, the centre bit of batch can is equipped with a bell on fixing.

4 tandem tank type blast furnace furnace roof equipment according to claim 1 is characterized in that: the weighing device that only furnace charge in batch can on fixing and the jar thereof is carried out accurate weighing is installed on the batch can on fixing.