CN212775592U - Pressure-equalizing blow-off valve pressing device - Google Patents
Pressure-equalizing blow-off valve pressing device Download PDFInfo
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- CN212775592U CN212775592U CN202021226699.0U CN202021226699U CN212775592U CN 212775592 U CN212775592 U CN 212775592U CN 202021226699 U CN202021226699 U CN 202021226699U CN 212775592 U CN212775592 U CN 212775592U
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Abstract
The utility model relates to a pressure-equalizing and pressure-discharging valve switch device field of a blast furnace top of a steel plant, namely a pressure-equalizing blow-off valve pressing device. The pressing plate is divided into a flat plate and a pressing plate seat, the flat plate is welded with the pressing plate seat, and a flange with a circular hole in the middle is connected with the upper end face of the pressing plate seat through bolts uniformly distributed on the circumference; the connecting rod is divided into a connecting rod body and a connecting rod lower end, the connecting rod lower end is arranged in the middle cavity of the pressure plate seat and is pressed and connected by the flange, and the connecting rod body partially extends out of a round hole in the middle of the flange; the bottom of the flat plate is provided with a pressure ring which is in contact seal with the sealing ring on the valve seat, the cross section of the pressure ring is rectangular, and the width of the pressure ring is larger than that of a pressure opening of the sealing ring; the connecting rod body and the lower end of the connecting rod are of an integrated structure, and the lower end of the connecting rod is made into a cylinder shape. The bottom of the valve pressing plate is in pressing ring contact sealing, the width of the pressing ring completely contains the sealing ring pressing opening, and the pressing ring can also form complete contact rigid hard sealing with the valve seat sealing ring pressing opening after the sealing ring is damaged, so that the valve is ensured not to leak, and personal safety is guaranteed.
Description
Technical Field
The utility model relates to a pressure-equalizing and pressure-discharging valve switch device field of a blast furnace top of a steel plant, namely a pressure-equalizing blow-off valve pressing device.
Background
In the prior art, in blast furnace ironmaking equipment, materials on a blast furnace enter a charging bucket, manual pressure equalization needs to be carried out on the charging bucket, so that the pressure in the charging bucket is equivalent to the pressure in the furnace, and the materials in the charging bucket can be sent into the blast furnace for smelting. And after all the materials enter the blast furnace, the pressure in the material tank is removed, so that the pressure in the material tank is equivalent to the atmospheric pressure, and the materials can be fed into the material tank again. The pressure-equalizing blow-off valve consists of a connecting rod body 8, a hemispherical connecting body 12, a flange 5, a pressing plate (or a valve plate) and a pressing ring 11. The connecting rod body 8 and the hemispherical connector 12 adopt a threaded connection mode. The pressing plate is divided into a flat plate 2 and a pressing plate seat 3 and is welded into a whole, and a round steel pressing ring 13 with a certain diameter and size is welded at the bottom of the flat plate 2 of the pressing plate and is in contact with a sealing ring 10 of the valve seat 1, so that the pressing and sealing effects are achieved. The connecting rod body 8 and the pressure plate are fixedly connected by a flange 5 and a bolt 6 (see figure 1). The disadvantages are that: the moving allowance of the pressure plate is large, and the rotating threads of the pressure plate are unscrewed due to medium airflow during valve opening and closing, so that the bolts 6 at the valve flange 5 are broken, damaged and leaked. The round steel clamping ring 13 compresses tightly repeatedly and seals, causes the sealing washer 10 of disk seat 1 to damage again, and after sealing washer 10 damaged and dropped off, there was the clearance between clamp plate and the valve body 1, can't seal, also causes the valve to leak, and the furnace roof voltage-sharing, row press time are long, increase the furnace roof material loading degree of difficulty, and the valve leaks simultaneously and also has certain potential safety hazard.
SUMMERY OF THE UTILITY MODEL
The utility model aims at the aforesaid not enough and provide a pressure-equalizing relief valve closing device. The valve plate is firmly fixed, the movement allowance is small, the bolt at the flange is not damaged by external force, the pressing plate pressing ring is fully contacted and sealed with the valve seat, the valve plate is not leaked during pressure equalizing and pressure discharging, the normal feeding order is ensured, and the personal safety is guaranteed.
The technical solution of the utility model is that: a pressure-equalizing bleeder valve pressing device comprises a pressing plate, wherein the pressing plate is divided into a flat plate and a pressing plate seat, the flat plate is welded with the pressing plate seat, and a flange with a round hole in the middle is connected with the upper end surface of the pressing plate seat through bolts uniformly distributed on the circumference; the connecting rod is divided into a connecting rod body and a connecting rod lower end, the connecting rod lower end is arranged in the middle cavity of the pressure plate seat and is pressed and connected by the flange, and the connecting rod body partially extends out of a round hole in the middle of the flange; the sealing ring sealing device is characterized in that a pressure ring which is in contact sealing with a sealing ring on a valve seat is arranged at the bottom of a flat plate, the cross section of the pressure ring is rectangular, and the width of the pressure ring is larger than that of a sealing ring pressure opening (sealing groove); the connecting rod body and the lower end of the connecting rod are of an integrated structure, and the lower end of the connecting rod is made into a cylinder shape.
A pressure-equalizing blow-off valve pressing device is rigidly connected with a pressure plate by adopting a connecting rod, and the bottom of the connecting rod is processed into a cylinder and fixed by a flange. The flange connecting bolt is enlarged, and the pre-tightening strength is increased. The bottom of the pressing plate is in contact sealing with a pressing ring with a certain size, the width of the pressing ring completely covers the pressing opening of the valve seat sealing ring, and the pressing ring and the pressing opening of the valve seat sealing ring form a complete contact rigid hard seal after the sealing ring is damaged.
The pressure equalizing and discharging medium of the blast furnace is blast furnace gas, when the blast furnace needs pressure equalizing, the blast furnace operating system sends an instruction to open the pressure equalizing oil cylinder, the oil cylinder drives the compressing device to open, the gas enters the charging bucket through the device to perform pressure equalizing operation within a specified time, after the pressure is equalized, the blast furnace operating system sends an instruction again to close the pressure equalizing oil cylinder, and the compressing device is closed. When the blast furnace needs to be diffused, the blast furnace operating system sends an instruction, the diffusing oil cylinder is opened, the oil cylinder drives the compressing device to be opened, the coal gas is discharged out of the charging bucket within a specified time through the device, after the coal gas reaches the atmospheric pressure equivalent value, the blast furnace operating system sends an instruction again, the diffusing oil cylinder is closed, and the compressing device is closed.
The utility model has the advantages that: 1. the connecting rod body and the lower end of the connecting rod are of an integrated structure, so that the connecting rod is high in connecting strength and anti-fatigue. 2. The pre-tightening force of the flange pressure bolt is increased, the bolt is fastened and is not easy to loosen and break, the pressing plate is firm, the positioning is accurate, and the maintenance is convenient. 3. The bottom of the valve pressing plate is in pressing ring contact sealing, the width of the pressing ring completely contains the sealing ring pressing opening, and the pressing ring can also form complete contact rigid hard sealing with the valve seat sealing ring pressing opening after the sealing ring is damaged, so that the valve is ensured not to leak, and personal safety is guaranteed.
Embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic structural diagram of a pressure equalizing relief valve pressing device before modification.
Fig. 2 is a simplified structure of the utility model after modification.
Detailed Description
Referring to fig. 1 and 2, the names of the components are as follows: disk seat 1, flat board 2, clamp plate seat 3, round hole 4, flange 5, bolt 6, the connecting rod body of rod 8, connecting rod lower end 7, sealing washer pressure port 9, sealing washer 10, clamping ring 11, hemisphere connector 12, round steel clamping ring 13.
Referring to fig. 2, the pressure-equalizing bleeder valve pressing device comprises a pressing plate, wherein the pressing plate is divided into a flat plate 2 and a pressing plate seat 3, the flat plate 2 is welded with the pressing plate seat 3, a flange 5 with a circular hole 4 in the middle is connected with the upper end surface of the pressing plate seat 3 through bolts 6 uniformly distributed on the circumference, the bolts 6 are connected with the flange 5 to increase the pre-tightening strength; the connecting rod is divided into a connecting rod body 8 and a cylindrical connecting rod lower end 7 and is fixed by a flange 5, the connecting rod lower end 7 is arranged in a middle cavity of the pressing plate seat 3 and is pressed and connected by the flange 5, the connecting rod body 8 partially extends out of a round hole 4 in the middle of the flange, and the connecting rod is rigidly connected with the pressing plate. The bottom of the flat plate 2 is provided with a pressing ring 11 which is in contact seal with a sealing ring 10 on the valve seat 1, the cross section of the pressing ring 11 is rectangular, the width of the pressing ring 11 is larger than that of a sealing ring pressing opening 9, the width of the pressing ring 11 completely contains the sealing ring pressing opening 9 of the valve seat 1, and the pressing ring 11 and the valve seat sealing ring pressing opening 9 form a completely-contact rigid hard seal after the sealing ring 10 is damaged; the connecting rod body 8 and the connecting rod lower end 7 are of an integral structure, and the connecting rod lower end 7 is made into a cylinder shape.
The above description is only exemplary of the present invention, and the various illustrations do not limit the essence of the present invention.
Claims (1)
1. A pressure-equalizing bleeder valve pressing device comprises a pressing plate, wherein the pressing plate is divided into a flat plate (2) and a pressing plate seat (3), the flat plate (2) is welded with the pressing plate seat (3), and a flange (5) with a round hole (4) in the middle is connected with the upper end surface of the pressing plate seat (3) through bolts (6) which are uniformly distributed on the circumference; the connecting rod is divided into a connecting rod body (8) and a connecting rod lower end (7), the connecting rod lower end (7) is arranged in the middle cavity of the pressure plate seat (3) and is pressed and connected by the flange (5), and part of the connecting rod body (8) extends out of the round hole (4) in the middle of the flange; the sealing device is characterized in that a pressing ring (11) which is in contact sealing with a sealing ring (10) on a valve seat (1) is arranged at the bottom of a flat plate (2), the cross section of the pressing ring (11) is rectangular, and the width of the pressing ring (11) is greater than that of a sealing ring pressing opening (9); the connecting rod body (8) and the lower end (7) of the connecting rod are of an integral structure, and the lower end (7) of the connecting rod is made into a cylinder shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021226699.0U CN212775592U (en) | 2020-06-29 | 2020-06-29 | Pressure-equalizing blow-off valve pressing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021226699.0U CN212775592U (en) | 2020-06-29 | 2020-06-29 | Pressure-equalizing blow-off valve pressing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212775592U true CN212775592U (en) | 2021-03-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021226699.0U Active CN212775592U (en) | 2020-06-29 | 2020-06-29 | Pressure-equalizing blow-off valve pressing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212775592U (en) |
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2020
- 2020-06-29 CN CN202021226699.0U patent/CN212775592U/en active Active
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