CN220452842U - Combustion-supporting air cut-off valve for hot blast stove - Google Patents

Abstract

The utility model relates to a combustion air cut-off valve for a hot blast stove, which comprises a valve body, wherein a pneumatic part is detachably connected above the valve body through a communicating pipe, the top end of the valve body and the bottom end of the pneumatic part are fixedly connected with the communicating pipe, a first connecting flange is sleeved on the communicating pipe positioned on the valve body, and the top end of the first connecting flange is provided with a groove.

Description

Combustion-supporting air cut-off valve for hot blast stove

Technical Field

The utility model relates to a combustion air cut-off valve for a hot blast stove, in particular to a combustion air cut-off valve for a hot blast stove, which is applied to the technical field of cut-off valves.

Background

The combustion air cut-off valve is a valve which uses an air source as a power to control the on-off of a pipeline system, can be widely applied to industrial production departments of petroleum, chemical industry, metallurgy and the like, and the air source of the pneumatic cut-off valve requires filtered compressed air, and the medium flowing through the valve body is liquid and gas without impurities and particles.

In order to solve the problem of inconvenient disassembly and assembly, a certain combustion air cut-off valve in the market adopts the design of convenient disassembly and assembly, and has a certain market occupation ratio.

At present, to the inside at high temperature flue gas pipeline of super high temperature pneumatic trip valve permanent installation, pneumatic portion and valve body are usually through a plurality of screw fixed connection, because screw permanent fixed often can lead to the screw to rust to be difficult to dismantle when pneumatic trip valve dismantles the maintenance, influence pneumatic trip valve's maintenance speed, lead to high temperature flue gas pipeline unable normal use.

Disclosure of Invention

Aiming at the prior art, the utility model aims to solve the technical problem that the pneumatic cut-off valve is difficult to detach during disassembly and overhaul.

In order to solve the problems, the utility model provides a combustion air cut-off valve for a hot blast stove, which comprises a valve body, wherein a pneumatic part is detachably connected above the valve body through a communicating pipe, the top end of the valve body and the bottom end of the pneumatic part are fixedly connected with the communicating pipe, a first connecting flange is sleeved on the communicating pipe positioned on the valve body, a groove is cut at the top end of the first connecting flange, a first fixing block is symmetrically and fixedly connected to the side wall of the first connecting flange, a second connecting flange is connected with the communicating pipe positioned on the pneumatic part in a threaded manner, the second connecting flange is in threaded connection with the first connecting flange, a second fixing block corresponding to the first fixing block is symmetrically and fixedly connected to the side wall of the second connecting flange, and the second fixing block is detachably connected with the first fixing block through bolts.

In the combustion air cut-off valve for the hot blast stove, the effect of quickly and conveniently assembling and disassembling the air cut-off valve is effectively achieved.

As a further improvement of the application, screw holes are formed in the second fixing block and the first fixing block, and the bolts are rotationally connected with the screw holes.

As a still further improvement of the application, the top end of the bolt is fixedly connected with a handle, and a protective sleeve is arranged on the handle.

As a further improvement of the application, a sealing ring is fixedly connected in the groove, and the sealing ring is matched with the bottom end of the second connecting flange.

As a further improvement of the present application, the inner wall of the groove is fixedly connected with a first thread ring, and the outer wall of the second connecting flange is fixedly connected with a second thread ring.

As a supplement to yet another improvement of the present application, the second fixing block and the bolt are coated with an anti-rust coating.

To sum up, this scheme can realize when the air cut-off valve uses for a long time and breaks down, when need carry out dismouting maintenance, the accessible rotates the bolt and dismantles the back with second fixed block and first fixed block for second flange upwards moves through rotating second flange, make second flange and first flange separation, later pull out communicating pipe in the first flange, dismantle valve body and pneumatic portion and maintain, install according to the normal position repairment again fast after the maintenance, reach the effect of quick convenient dismouting air cut-off valve effectively.

Drawings

FIG. 1 is a side view of an air shutoff valve shaft according to a first embodiment of the present application;

fig. 2 is a partial enlarged view of an air shutoff valve according to a first embodiment of the present application;

fig. 3 is an enlarged view at a in fig. 2 of a second embodiment of the present application.

The reference numerals in the figures illustrate:

1. a valve body; 2. a pneumatic section; 3. a communicating pipe; 4. a first connection flange; 5. a second connection flange; 6. a first fixed block; 7. a second fixed block; 8. a screw hole; 9. a seal ring; 10. a groove; 11. a bolt; 12. a handle; 13. a first thread turn; 14. and a second thread turn.

Detailed Description

Two embodiments of the present application are described in detail below with reference to the accompanying drawings.

First embodiment:

fig. 1-2 show a combustion air cut-off valve for a hot blast stove, which comprises a valve body 1, the pneumatic part 2 is detachably connected to the upper side of the valve body 1 through a communicating pipe 3, the communicating pipe 3 is fixedly connected to the top end of the valve body 1 and the bottom end of the pneumatic part 2, a first connecting flange 4 is sleeved on the communicating pipe 3 positioned on the valve body 1, a groove 10 is cut on the top end of the first connecting flange 4, a first fixing block 6 is symmetrically and fixedly connected to the side wall of the first connecting flange 4, a second connecting flange 5 is connected to the communicating pipe 3 positioned on the pneumatic part 2 in a threaded manner, the second connecting flange 5 is in threaded connection with the first connecting flange 4, a second fixing block 7 corresponding to the first fixing block 6 is symmetrically and fixedly connected to the side wall of the second connecting flange 5, and the second fixing block 7 is detachably connected to the first fixing block 6 through a bolt 11.

This scheme can realize when the air cut-off valve uses for a long time and breaks down, when need carry out dismouting maintenance, accessible rotation bolt 11 is dismantled second fixed block 7 with first fixed block 6 after, through rotating second flange 5, make second flange 5 upwards move, make second flange 5 and first flange 4 separation, pull out communicating pipe 3 in first flange 4 afterwards, dismantle valve body 1 and pneumatic portion 2 and maintain, install fast according to the normal position repairment again after the maintenance, reach the effect of quick convenient dismouting air cut-off valve effectively.

According to the scheme, after the air cut-off valve is used for a long time and is subjected to fault disassembly and maintenance, the communicating pipe 3 is connected with the first connecting flange 4, the sealing ring 9 is placed in the groove 10, then the second connecting flange 5 is rotated, the second connecting flange 5 is clamped with the first connecting flange 4, the sealing performance is enhanced at the joint through the sealing ring 9, the second connecting flange 5 is rotated after the first connecting flange 4 is clamped with the second connecting flange 5, the first connecting flange 4 is tightly connected with the second connecting flange 5 through the second thread ring 14 and the first thread ring 13, the second fixing block 7 corresponds to the first fixing block 6 after the first connecting flange 4 is connected with the second connecting flange 5, the bolt 11 is inserted into the screw hole 8, and the second fixing block 7 is fixedly connected with the first fixing block 6 through the manual rotation of the bolt 11 through the handle 12, so that the effect of installing the air cut-off valve is achieved.

Second embodiment:

fig. 2-3 show that screw holes 8 are formed in the second fixing block 7 and the first fixing block 6, a bolt 11 is rotationally connected with the screw holes 8, a handle 12 is fixedly connected to the top end of the bolt 11, a protecting sleeve is arranged on the handle 12, a sealing ring 9 is fixedly connected in a groove 10, the sealing ring 9 is matched with the bottom end of the second connecting flange 5, a first thread ring 13 is fixedly connected to the inner wall of the groove 10, a second thread ring 14 is fixedly connected to the outer wall of the second connecting flange 5, and an anti-rust coating is coated on the second fixing block 7 and the bolt 11.

The scope of protection of the above-described embodiments employed in the present application is not limited to the above-described embodiments, and various changes made by those skilled in the art without departing from the spirit of the present application are still within the scope of protection of the present utility model.

Claims (6)

1. Combustion air stop valve for hot-blast furnace, including valve body (1), its characterized in that: the utility model discloses a pneumatic valve for the gas turbine, including valve body (1), pneumatic portion (2) are connected with in detachable mode through communicating pipe (3) in valve body (1), equal fixedly connected with communicating pipe (3) in valve body (1) top and pneumatic portion (2) bottom are located cover on communicating pipe (3) is equipped with first flange (4), first flange (4) top cutting fluted (10), first flange (4) lateral wall symmetry fixedly connected with first fixed block (6), be located on pneumatic portion (2) threaded connection has second flange (5) on communicating pipe (3), and second flange (5) and first flange (4) threaded connection, second flange (5) lateral wall symmetry fixedly connected with and second fixed block (7) that first fixed block (6) correspond, and second fixed block (7) and first fixed block (6) are connected with in detachable mode through bolt (11).

2. The combustion air shut-off valve for a hot blast stove according to claim 1, characterized in that: screw holes (8) are formed in the second fixed block (7) and the first fixed block (6), and bolts (11) are rotationally connected with the screw holes (8).

3. The combustion air shut-off valve for a hot blast stove according to claim 1, characterized in that: the top end of the bolt (11) is fixedly connected with a handle (12), and a protective sleeve is arranged on the handle (12).

4. The combustion air shut-off valve for a hot blast stove according to claim 1, characterized in that: and a sealing ring (9) is fixedly connected in the groove (10), and the sealing ring (9) is matched with the bottom end of the second connecting flange (5).

5. The combustion air shut-off valve for a hot blast stove according to claim 1, characterized in that: the inner wall of the groove (10) is fixedly connected with a first thread ring (13), and the outer wall of the second connecting flange (5) is fixedly connected with a second thread ring (14).

6. The combustion air shut-off valve for a hot blast stove according to claim 1, characterized in that: and the second fixing block (7) and the bolt (11) are coated with an anti-rust coating.