CN216742894U

CN216742894U - Gravity dust collector blocking valve

Info

Publication number: CN216742894U
Application number: CN202123377955.3U
Authority: CN
Inventors: 马志强; 郭鹏飞; 师绍浦
Original assignee: Shijiazhuang Turner Metallurgical Equipment Manufacturing Co ltd
Current assignee: Shijiazhuang Turner Metallurgical Equipment Manufacturing Co ltd
Priority date: 2021-12-29
Filing date: 2021-12-29
Publication date: 2022-06-14
Anticipated expiration: 2031-12-29

Abstract

The utility model discloses a blocking valve of a gravity dust collector, which comprises a gravity dust collection shell, a gravity dust collection inlet and a valve seat, wherein the valve seat is arranged on the gravity dust collection inlet, the gravity dust collection inlet is positioned on the gravity dust collection shell, a valve plate is arranged on the valve seat, the other end of the valve plate is connected with a pressing arm, the other end of the pressing arm is connected with a driving shaft, the pressing arm is fixedly connected with the driving shaft, the other end of the driving shaft is connected with a hydraulic cylinder, a gas interface is arranged on the valve seat, an upper cover is arranged on the gravity dust collection shell, and the upper cover is connected with the gravity dust collection shell through a bolt. Compare in current gravity dust collector interruption valve, this gravity dust collector interruption valve adopts panel-turnover type structure, and hydraulic drive installs at gravity dust removal entry, can replace traditional gravity dust collector interruption valve completely, and its advantage is little in this interruption valve head space, light in weight, simple structure, close the back simultaneously and blow in nitrogen gas or steam through nitrogen gas or steam interface at sealed face to the sealed effect of reinforcing improves the interruption effect of gravity dust collector greatly.

Description

Gravity dust collector blocking valve

Technical Field

The utility model relates to the technical field of blast furnace dust removal equipment, in particular to a blocking valve of a gravity dust remover.

Background

The gravity dust collector is a coal gas coarse dust collecting device in the blast furnace ironmaking production process, and the dust collecting efficiency is more than 85 percent. The gravity dust collector is internally provided with a gas blocking valve which is used for blocking a gas passage between a gas pipeline at the side of the blast furnace body and a gas pipeline at the back of the gravity dust collector when the blast furnace stops, and preventing gas in the gas pipeline at the back of the gravity dust collector and a gas pipe network of the blast furnace from flowing back into the gas pipeline at the side of the blast furnace body so as to prevent operators from generating blast furnace gas poisoning accidents in the blowing down and maintenance processes of the blast furnace.

The gravity dust collector blocking valve is arranged in a blast furnace gravity dust removal raw gas system and used for blocking blast furnace gas and a dust removal system when a blast furnace is shut down and overhauled, the traditional gravity dust collector blocking valve adopts a double-bell structure, a winch is used for pulling up double bells through a steel wire rope and a rope pulley when the traditional gravity dust collector blocking valve is opened, the diameter of the double bells is large, the weight is large, a certain lifting space is needed by a pull rod during lifting, the winch is needed during working, and the manufacturing cost is large.

SUMMERY OF THE UTILITY MODEL

The utility model provides an interruption valve of a gravity dust collector, which solves the technical problem that the existing interruption valve is large in size and difficult to operate.

In order to solve the technical problems, the blocking valve of the gravity dust collector comprises a gravity dust collection shell, a gravity dust collection inlet and a valve seat, wherein the valve seat is installed on the gravity dust collection inlet, the gravity dust collection inlet is located on the gravity dust collection shell, the valve seat is provided with a valve plate, the other end of the valve plate is connected with a pressing arm, the other end of the pressing arm is connected with a driving shaft, the pressing arm is fixedly connected with the driving shaft, the other end of the driving shaft is connected with a hydraulic cylinder, the valve seat is provided with an air interface, the gravity dust collection shell is provided with an upper cover, the upper cover is connected with the gravity dust collection shell through a bolt, and the valve plate and the valve seat can be replaced after the upper cover is detached.

As a further scheme of the utility model, the valve seat is fixedly arranged on a pipeline of the gravity dust removal inlet.

As a further scheme of the utility model, the valve plate is connected with the pressing arm through a spherical pad.

In a further aspect of the present invention, a shaft end support and a shaft end seal are provided between the drive shaft and the hydraulic cylinder.

As a further scheme of the utility model, the gas introduced into the gas interface is nitrogen or steam.

Compared with the related art, the blocking valve of the gravity dust collector provided by the utility model has the following beneficial effects:

compare in current gravity dust collector interruption valve, this gravity dust collector interruption valve adopts panel-turnover type structure, and hydraulic drive installs at gravity dust removal entry, can replace traditional gravity dust collector interruption valve completely, and its advantage is little in this interruption valve head space, light in weight, simple structure, close the back simultaneously and blow in nitrogen gas or steam through nitrogen gas or steam interface at sealed face to the sealed effect of reinforcing improves the interruption effect of gravity dust collector greatly.

Drawings

FIG. 1 is a front view of a gravity precipitator interrupter valve;

FIG. 2 is a side view of a gravity precipitator shutoff valve;

FIG. 3 is a top view of FIG. 1;

FIG. 4 is an enlarged view of FIG. 1 at C;

fig. 5 is an enlarged schematic view of B in fig. 1.

The reference numbers in the figures: 1. a gravity dust removal housing; 2. an upper cover; 3. a drive shaft; 4. a gravity dust removal inlet; 5. a valve seat; 6. a valve plate; 7. a pressing arm; 8. a hydraulic cylinder; 9. the shaft end is supported; 10. sealing the shaft end; 11. a spherical pad; 12. a belleville spring; 13. and a gas interface.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments; all other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-5, a gravity dust collector blocking valve comprises a gravity dust collector housing 1, a gravity dust collector inlet 4 and a valve seat 5, wherein the valve seat 5 is installed on the gravity dust collector inlet 4, the gravity dust collector inlet 4 is located on the gravity dust collector housing 1, the valve seat 5 is fixedly installed on a pipeline of the gravity dust collector inlet 4, a valve plate 6 is arranged on the valve seat 5, the other end of the valve plate 6 is connected with a pressing arm 7, the valve plate 6 is connected with the pressing arm 7 through a spherical pad 11, the other end of the pressing arm 7 is connected with a driving shaft 3, the pressing arm 7 is fixedly connected with the driving shaft 3, the other end of the driving shaft 3 is connected with a hydraulic cylinder 8, a shaft end bearing 9 and a shaft end seal 10 are arranged between the driving shaft 3 and the hydraulic cylinder 8, the shaft end bearing 9 and the shaft end seal 10 respectively play a role in bearing and sealing, the hydraulic cylinder 8 drives the driving shaft 3 to rotate, and drives the valve plate 6 on the pressing arm 7 to contact with a sealing surface of the valve seat 5, accomplish gaseous shutoff, disk seat 5 on have gas connection 13, the gas that gas connection 13 let in is nitrogen gas or steam, is equipped with upper cover 2 on the gravity dust removal casing 1, pass through bolted connection between upper cover 2 and the gravity dust removal casing 1, valve plate 6 and disk seat 5 can be changed after dismantling upper cover 2.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A blocking valve of a gravity dust collector comprises a gravity dust collecting shell (1), a gravity dust collecting inlet (4) and a valve seat (5), the valve seat (5) is arranged on the gravity dust removal inlet (4), the gravity dust removal inlet (4) is positioned on the gravity dust removal shell (1), it is characterized in that a valve plate (6) is arranged on the valve seat (5), the other end of the valve plate (6) is connected with a pressing arm (7), the other end of the pressing arm (7) is connected with a driving shaft (3), the pressing arm (7) is fixedly connected with the driving shaft (3), the other end of the driving shaft (3) is connected with a hydraulic cylinder (8), the valve seat (5) is provided with a gas connector (13), the gravity dust removal shell (1) is provided with an upper cover (2), the upper cover (2) is connected with the gravity dust removal shell (1) through a bolt, and the valve plate (6) and the valve seat (5) can be replaced after the upper cover (2) is detached.

2. A gravity precipitator shut-off valve according to claim 1, in which the valve seat (5) is fixedly mounted in the duct of the gravity precipitator inlet (4).

3. A gravity precipitator interrupter valve according to claim 1, characterised in that the valve plate (6) and the pressing arm (7) are connected by a spherical pad (11).

4. A gravity precipitator shut-off valve according to claim 1, characterised in that shaft end bearings (9) and shaft end seals (10) are provided between the drive shaft (3) and the hydraulic cylinder (8).

5. The gravity dust collector interruption valve according to claim 1, wherein the gas introduced into the gas interface (13) is nitrogen or steam.