CN213479209U

CN213479209U - Blast furnace top sealing valve with good air tightness

Info

Publication number: CN213479209U
Application number: CN202021785509.9U
Authority: CN
Inventors: 梁余森; 王志强; 赖祥春; 张铁
Original assignee: Jilin Xinda Iron and Steel Co Ltd
Current assignee: Jilin Xinda Iron and Steel Co Ltd
Priority date: 2020-08-25
Filing date: 2020-08-25
Publication date: 2021-06-18
Anticipated expiration: 2030-08-25

Abstract

A blast furnace top sealing valve with good air tightness comprises a cylinder part, a crank, a counterweight part, a CPU and a sealing part; the sealing part is arranged on the gas transmission pipeline; the crank is arranged on the sealing part; the cylinder part and the counterweight part are arranged on the outer wall of the shell at the top of the blast furnace; the cylinder part is a magnetic cylinder; the counterweight part comprises a counterweight part, a connecting rope, a rope wheel, a bearing frame and a sucker type electromagnet; the supporting frame is arranged on the outer wall of the shell at the top of the blast furnace, and the upper end of the supporting frame is fixedly connected with a rope pulley; the connecting rope is arranged on the rope wheel, one end of the connecting rope is connected with one end of the crank, and the other end of the connecting rope is connected to one end of the counterweight; the sucker type electromagnet is arranged on the outer wall of the shell of the furnace top of the blast furnace, and the central line of the sucker type electromagnet coincides with the axial line of the counterweight. The utility model provides high seal valve's leakproofness has guaranteed going on smoothly of production operation.

Description

Blast furnace top sealing valve with good air tightness

Technical Field

The utility model relates to a seal valve, especially a blast furnace top seal valve that gas tightness is good belongs to metallurgical blast furnace technical field.

Background

The top of the blast furnace is a raw material feeding port of the blast furnace and is also a gas transmission port of coal gas; through opening and closing of valves at the top of the blast furnace, raw materials such as sinter, coke and the like are put into the furnace body in batches, and the raw materials are refined into molten iron and blast furnace gas at high temperature in the blast furnace; the main components of the blast furnace gas comprise high-concentration CO and iron oxide dust particles, and the blast furnace gas is normally discharged from an exhaust pipe at the bottom of a furnace body to the next procedure for recycling and then filtering and discharging, but the valve at the top of the blast furnace cannot meet the requirement on tightness due to long-term maintenance, so that the blast furnace gas overflows from the valve at the top of the furnace, the raw materials in a material tank cannot be put into the furnace, the normal operation of production is seriously influenced, and the working environment can be influenced by the overflowed blast furnace gas; therefore, an auxiliary device capable of improving the sealing performance of the sealing valve at the top of the blast furnace is needed, the air tightness is improved, and the normal operation of production is guaranteed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provide a sealing valve with good air tightness for the top of a blast furnace, which can effectively ensure that a valve cap is tightly buckled on a valve seat.

The problem is solved through following technical scheme:

a blast furnace top sealing valve with good air tightness comprises a cylinder part, a crank, a counterweight part, a CPU and a sealing part; the sealing part is arranged on the gas transmission pipeline; the crank is arranged on the sealing part; the cylinder part and the counterweight part are arranged on the outer wall of the shell at the top of the blast furnace; the cylinder part comprises a cylinder barrel, a piston rod, a piston, an inductive switch, a bracket and a magnetic ring; the bracket is arranged on the outer wall of the shell at the top of the blast furnace; the outer wall of the cylinder barrel is hinged to the top end of the bracket; the piston is arranged in the cylinder barrel, and the magnetic ring is embedded in the annular groove on the circumferential surface of the piston; the piston rod is arranged in the cylinder barrel, one end of the piston rod is arranged on the piston, and the other end of the piston rod is hinged with one end of the crank; an inductive switch is arranged on the outer wall of the cylinder barrel; the counterweight part comprises a counterweight part, a connecting rope, a rope wheel, a bearing frame and a sucker type electromagnet; the supporting frame is arranged on the outer wall of the shell at the top of the blast furnace, and the upper end of the supporting frame is fixedly connected with a rope pulley; the connecting rope is arranged on the rope wheel, one end of the connecting rope is connected with one end of the crank, and the other end of the connecting rope is connected to one end of the counterweight; the sucker type electromagnet is arranged on the outer wall of the shell of the furnace top of the blast furnace, and the central line of the sucker type electromagnet coincides with the axial line of the counterweight.

In the blast furnace top sealing valve with good air tightness, the output signal of the inductive switch is connected with the input signal port of the CPU through the A/D converter; the cylinder barrel air inlet and outlet pipe is provided with an electromagnetic valve; the output signal end of the CPU is connected with the control end of the electromagnetic valve through a D/A converter; and the output signal end of the CPU is connected with a power switch of the sucker type electromagnet through a D/A converter.

The blast furnace top sealing valve with good air tightness comprises a sealing valve shell, a sealing valve seat, a sealing valve cap, a connecting shaft and a shaft seat; the sealing valve shell is arranged on the gas transmission pipeline, and a part of pipeline of the gas transmission pipeline is removed from the sealing valve shell; the sealing valve seat is arranged at an opening at one end of the gas transmission pipeline; the shaft seats are symmetrically arranged at two ends of the sealing valve shell, and the connecting shaft penetrates through the shaft seats; one end of the connecting shaft is connected with a crank; the sealing valve cap is arranged in the sealing valve shell and is fixedly connected to the connecting shaft.

The blast furnace top sealing valve with good air tightness is additionally provided with an alarm lamp; the alarm lamp is arranged in the control room; and the output signal end of the CPU is connected with a power switch of the alarm lamp through a D/A converter.

The utility model effectively improves the sealing performance through the counterweight part, and avoids the accidental situations of air leakage and air leakage caused by untight closing of the valve cap; and the effectual state with real-time valve cap of the cooperation of the magnetic ring that sets up in the cylinder part and inductive switch is visual, and when the valve cap closure was not tight, the warning light scintillation can signal maintainer, and the suggestion maintainer overhauls.

In addition, the CPU can automate the whole action process, greatly reduce the labor intensity of workers and improve the working efficiency.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic view of the internal structure of the sealing part of the present invention;

fig. 3 is the schematic view of the partial sectional structure of the cylinder of the present invention.

The list of labels in the figure is: 1. the device comprises a crank, 2 a cylinder barrel, 3 a piston rod, 4 a piston, 5 an inductive switch, 6 a support, 7 a magnetic ring, 8 a counterweight, 9 a connecting rope, 10 a rope wheel, 11 a support frame, 12 a sucker type electromagnet, 13 a sealing valve shell, 14 a sealing valve seat, 15 a sealing valve cap, 16 a connecting shaft and 17 a shaft seat.

Detailed Description

Referring to fig. 1, 2 and 3, including a cylinder portion, a crank 1, a weight portion, a CPU and a sealing portion; the sealing part is arranged on the gas transmission pipeline and is used for opening and closing the circulation of gas; the crank 1 is arranged on the sealing part; the cylinder part and the counterweight part are arranged on the outer wall of the shell at the top of the blast furnace; the cylinder part comprises a cylinder barrel 2, a piston rod 3, a piston 4, an inductive switch 5, a bracket 6 and a magnetic ring 7; the bracket 6 is arranged on the outer wall of the shell at the top of the blast furnace; the outer wall of the cylinder barrel 2 is hinged to the top end of the support 6, and the hinged structure can enable the cylinder barrel 2 to rotate on the support 6 at a certain angle; one end of the piston rod 3 is connected with the crank 1, and the extension and retraction of the piston rod 3 drives the crank 1 to rotate, so that the sealing valve cap 15 is driven to open and close, and the purpose of closing and conducting the sealing valve seat 14 is realized; the piston 4 is arranged in the cylinder barrel 2, and the magnetic ring 7 is embedded in an annular groove on the circumferential surface of the piston 4; the piston rod 3 is arranged in the cylinder barrel 2, one end of the piston rod 3 is arranged on the piston 4, and the other end of the piston rod 3 is hinged with one end of the crank 1; an inductive switch 5 is arranged on the outer wall of the cylinder barrel 2; the cylinder barrel 2 is made of a material with weak magnetic conductivity and strong magnetic isolation; when the piston 4 moves in the cylinder barrel 2 and the magnetic ring 7 on the piston 4 is close to the inductive switch 5, the inductive switch 5 induces the magnetic force of the magnetic ring 7 and then sends an electric signal to the CPU; when the magnetic ring 7 is just inducted by the inductive switch 5, the piston rod 3 pushes the crank 1 to rotate to the position, and the sealing valve cap 15 is just buckled on the sealing valve seat 14; that is, only when the sealing bonnet 15 is tightly fastened on the sealing valve seat 14, the position of the magnetic ring 7 can be sensed by the sensing switch 5; in order to ensure that the sealing valve cap 15 is more reliably buckled on the sealing valve seat 14, a counterweight part is added; the counterweight part comprises a counterweight member 8, a connecting rope 9, a rope wheel 10, a bearing frame 11 and a sucker type electromagnet 12; the supporting frame 11 is arranged on the outer wall of the shell at the top of the blast furnace, and the upper end of the supporting frame is fixedly connected with the rope pulley 10; the connecting rope 9 is arranged on the rope wheel 10, one end of the connecting rope 9 is connected with one end of the crank 1, and the other end of the connecting rope 9 is connected with one end of the counterweight 8; when the sealing valve cap 15 is buckled with the sealing valve seat 14, the gravity of the counterweight 8 provides a force for the crank 1, and the force can help the sealing valve cap 15 to be buckled with the sealing valve seat 14 more tightly; the counterweight 8 is made of metal material; in order to make the weight 8 have a better downward force, a sucker type electromagnet 12 is arranged; the sucker type electromagnet 12 is arranged on the outer wall of the shell of the furnace top of the blast furnace, and the central line of the sucker type electromagnet coincides with the axial line of the counterweight 8; the sucker type electromagnet 12 is arranged right below the counterweight 8, and when the sucker type electromagnet 12 is electrified, the sucker type electromagnet has strong magnetism, so that the sucker type electromagnet adsorbs the counterweight 8 and provides a strong downward force for the counterweight 8; when the sealing valve cap 15 is buckled with the sealing valve seat 14, the sucker type electromagnet 12 is electrified to provide stronger buckling force for the sealing valve cap 15; when the sealing valve cap 15 needs to be opened, the power supply of the sucker type electromagnet 12 is cut off, so that the weight member 8 can smoothly move upwards.

In order to make the whole process more automatic, a CPU is added; the output signal of the inductive switch 5 is connected with the input signal port of the CPU through an A/D converter; the air inlet and outlet pipes of the cylinder barrel 2 are provided with electromagnetic valves; the output signal end of the CPU is connected with the control end of the electromagnetic valve through a D/A converter; the output signal end of the CPU is connected with a power switch of the sucker type electromagnet 12 through a D/A converter; when the sealing valve cap 15 is buckled to the proper position, the magnetic ring 7 triggers the inductive switch 5, and the inductive switch 5 transmits a signal to an input signal port of the CPU through the A/D converter; after the CPU analyzes the data, the CPU controls a power switch of the sucker type electromagnet 12 to electrify the sucker type electromagnet 12 so that the sucker type electromagnet adsorbs the counterweight 8; when the gas needs to be introduced, a signal is sent to the CPU by a worker through the keyboard, the CPU disconnects a power switch of the sucker type electromagnet 12, then controls the electromagnetic valve on the gas inlet pipe and the gas outlet pipe of the cylinder barrel 2, and retracts the piston rod 3, so that the aim of rotating and resetting the sealing valve cap 15 is fulfilled, and the sealing valve seat 14 is enabled to be introduced with the gas.

The sealing part comprises a sealing valve shell 13, a sealing valve seat 14, a sealing valve cap 15, a connecting shaft 16 and a shaft seat 17; the sealing valve housing 13 is arranged on a gas transmission pipeline, and a part of the pipeline in the sealing valve housing 13 is removed from the gas transmission pipeline; the sealing valve seat 14 is arranged at an opening at one end of the gas transmission pipeline; the shaft seats 17 are symmetrically arranged at two ends of the sealing valve shell 13, and the connecting shaft 16 penetrates through the shaft seats; one end of the connecting shaft 16 is connected with the crank 1; the sealing valve cap 15 is arranged in the sealing valve housing 13 and is fixedly connected to the connecting shaft 16; when the piston rod 3 drives the crank 1 to rotate, the connecting shaft 16 connected to the crank 1 also rotates along with the crank, so that the sealing valve cap 15 connected to the connecting shaft 16 is driven to rotate, and the opening and closing disconnection actions are realized.

In order to be able to timely overhaul when the sealing valve seat 14 cannot be closed, an alarm lamp is arranged; the alarm lamp is arranged in the control room; the output signal end of the CPU is connected with a power switch of the alarm lamp through a D/A converter; when the sealing valve seat 14 cannot be closed in place, the position of the piston rod 3 cannot be in place, and the magnetic ring 7 cannot activate the inductive switch 5; after the piston rod 3 acts, if the inductive switch 5 does not receive an excitation signal, the CPU sends a signal to the alarm lamp to enable the alarm lamp to flicker, prompts workers in the control room that the sealing valve seat 14 cannot be closed, and sends people to overhaul in time, so that unnecessary economic loss is avoided.

The utility model discloses the model of well CPU module is AT89C 1051.

Claims

1. The utility model provides a blast furnace roof seal valve with good gas tightness which characterized in that: comprises a cylinder part, a crank (1), a counterweight part, a CPU and a sealing part; the sealing part is arranged on the gas transmission pipeline; the crank (1) is arranged on the sealing part; the cylinder part and the counterweight part are arranged on the outer wall of the shell at the top of the blast furnace; the cylinder part comprises a cylinder barrel (2), a piston rod (3), a piston (4), an inductive switch (5), a bracket (6) and a magnetic ring (7); the bracket (6) is arranged on the outer wall of the shell at the top of the blast furnace; the outer wall of the cylinder barrel (2) is hinged to the top end of the bracket (6); the piston (4) is arranged in the cylinder barrel (2), and the magnetic ring (7) is embedded in the annular groove on the circumferential surface of the piston (4); the piston rod (3) is arranged in the cylinder barrel (2), one end of the piston rod (3) is arranged on the piston (4), and the other end of the piston rod (3) is hinged with one end of the crank (1); an inductive switch (5) is arranged on the outer wall of the cylinder barrel (2); the counterweight part comprises a counterweight part (8), a connecting rope (9), a rope wheel (10), a bearing frame (11) and a sucker type electromagnet (12); the supporting frame (11) is arranged on the outer wall of the shell at the top of the blast furnace, and the upper end of the supporting frame is fixedly connected with the rope pulley (10); the connecting rope (9) is arranged on the rope wheel (10), one end of the connecting rope (9) is connected with one end of the crank (1), and the other end of the connecting rope (9) is connected with one end of the counterweight (8); the sucker type electromagnet (12) is arranged on the outer wall of the shell of the furnace top of the blast furnace, and the central line of the sucker type electromagnet coincides with the axial line of the counterweight (8).

2. The blast furnace top sealing valve with good airtightness according to claim 1, wherein: the output signal of the inductive switch (5) is connected with the input signal port of the CPU through an A/D converter; the air inlet and outlet pipes of the cylinder barrel (2) are provided with electromagnetic valves; the output signal end of the CPU is connected with the control end of the electromagnetic valve through a D/A converter; the output signal end of the CPU is connected with a power switch of the sucker type electromagnet (12) through a D/A converter.

3. The blast furnace top sealing valve with good airtightness according to claim 2, wherein: the sealing part comprises a sealing valve shell (13), a sealing valve seat (14), a sealing valve cap (15), a connecting shaft (16) and a shaft seat (17); the sealing valve shell (13) is arranged on the gas transmission pipeline, and a part of pipeline of the gas transmission pipeline is removed in the sealing valve shell (13); the sealing valve seat (14) is arranged at an opening at one end of the gas transmission pipeline; the shaft seats (17) are symmetrically arranged at two ends of the sealing valve shell (13), and the connecting shaft (16) penetrates through the shaft seats; one end of the connecting shaft (16) is connected with the crank (1); the sealing valve cap (15) is arranged in the sealing valve shell (13) and is fixedly connected to the connecting shaft (16).

4. The blast furnace top sealing valve with good airtightness according to claim 3, wherein: an alarm lamp is additionally arranged; the alarm lamp is arranged in the control room; and the output signal end of the CPU is connected with a power switch of the alarm lamp through a D/A converter.