CN219013497U

CN219013497U - Adjusting device of counterweight-free gas diffusing valve cover

Info

Publication number: CN219013497U
Application number: CN202223304814.3U
Authority: CN
Inventors: 张松涛; 张进; 郭宇; 赵慧杰; 王新华
Original assignee: SHILIN (LUOHE) METALLURGY EQUIPMENT CO Ltd
Current assignee: SHILIN (LUOHE) METALLURGY EQUIPMENT CO Ltd
Priority date: 2022-12-10
Filing date: 2022-12-10
Publication date: 2023-05-12
Anticipated expiration: 2032-12-10

Abstract

The utility model discloses an adjusting device of a counterweight-free gas diffusing valve cover, which comprises a valve seat, a valve cover and a rotating arm, wherein the valve cover is arranged on the valve seat, a sealing ring is arranged between the valve seat and the valve cover, a tensioning rod is in spherical joint with the upper end of the valve cover, a step is arranged on the tensioning rod, a pressure adjusting device is arranged on the step, the tensioning rod penetrates through the pressure adjusting device, and a nut is connected with the upper end of the tensioning rod through threads. According to the utility model, through improving the valve cover connecting structure, the valve cover adjusting device is designed, the valve cover position is adjustable, the problems of non-concentricity in valve cover installation and air leakage after the sealing pressure is reduced are solved, the manufacturing difficulty is reduced, the sealing service life is prolonged, the on-line adjustment and maintenance are convenient, and the air-break time caused by air leakage is reduced.

Description

Adjusting device of counterweight-free gas diffusing valve cover

Technical Field

The utility model belongs to the technical field of blast furnace ironmaking accessories, and particularly relates to an adjusting device of a counterweight-free gas diffusing valve cover.

Background

In the iron making system, a furnace top gas diffusing valve is arranged on a blast furnace top diffusing pipeline to play a role in safety diffusing. The relief valve is normally in a closed state, zero leakage is required, the valve cover is a hard alloy sealing surface, the valve seat adopts a soft sealing ring, the valve cover and the valve seat are concentric under an ideal state, and the valve seat sealing ring is uniformly stressed and can maintain a long-term stable sealing state. In the actual production and manufacturing process, concentricity is difficult to ensure due to machining errors and errors accumulated in assembly, so that the valve cover and the valve seat are sealed and eccentric, and the stress of the sealing ring is uneven after the valve is closed, so that the final sealing effect is affected. In addition, the elasticity of the sealing rubber ring gradually decreases to cause air leakage under long-term use, and online adjustment and maintenance are difficult. The air leakage can influence the service life of equipment or cause accidents, and blast furnace damping down is caused.

The Chinese patent application No. 200420098590.8 discloses a self-compensating device of a blast furnace gas diffusion valve, which comprises a middle connecting rod, wherein the lower end of the middle connecting rod is movably connected with a valve cover of the blast furnace gas diffusion valve, and the upper end of the middle connecting rod is hinged with a curved rod through a pin shaft. The device can enable the valve cover to be capable of adjusting an angle relative to the curved rod at will according to errors so as to compensate processing, manufacturing and installation errors of parts and enable the valve cover to be combined with the spherical surface of the valve seat concentrically and tightly; by adopting the technical scheme, the allowable error range can be enlarged, and the processing and manufacturing difficulty of parts is reduced.

The Chinese patent application No. 200520032435.0 discloses a non-counterweight furnace top bleeding valve used in blast furnace ironmaking, which comprises a valve body, a valve cover and a driving device. The valve body comprises a valve seat, a middle shell and a lower shell. The opening and closing device of the valve cover consists of a large rotating arm, a small rotating arm, a support seat thereof, a connecting plate between the large rotating arm and the support seat, and the like, the valve cover is hinged with the large rotating arm, the large rotating arm is hinged with the large support seat thereof, the small rotating arm is hinged with the small support seat thereof, and the large rotating arm and the small rotating arm are hinged with the connecting plate. When the two pin shaft holes connected with the large rotating arm and the small rotating arm by the connecting plate are positioned at the vertical positions, the opening and closing device is self-locked, and the valve cover is in a closed state. When the driving device pulls the small rotating arm, the two pin shaft holes connected with the large rotating arm and the small rotating arm are deviated from the dead point positions, and the small rotating arm drives the connecting plate, so that the large rotating arm is pulled to swing, and the valve cover is opened. The counterweight-free self-locking type relief valve utilizes the position relationship between the large rotary arm, the small rotary arm and the connecting plate to realize the opening and closing of the valve cover, and has the advantages of simple structure, light weight, small starting power, safety, economy and prolonged service life.

Disclosure of Invention

The utility model aims to solve the technical problems that: how to solve the problems that the valve cover and the valve seat of the diffusing valve are not concentric, and the air leakage is difficult to adjust and maintain on line due to the fact that the sealing rubber ring is elastically lowered under long-term use, and in order to solve the problems, the adjusting device of the non-counterweight gas diffusing valve cover is provided.

In order to solve the technical problems, the technical scheme of the utility model is realized in the following way:

the adjusting device comprises a valve seat, a valve cover and a rotating arm, wherein the valve cover is arranged on the valve seat, a sealing ring is arranged between the valve seat and the valve cover, the upper end of the valve cover is in spherical joint with a tensioning rod, a step is arranged on the tensioning rod, a pressure adjusting device is arranged on the step, the tensioning rod penetrates through the pressure adjusting device, and a nut is connected with the upper end of the tensioning rod in a threaded manner;

the pressure regulating device comprises a pressure regulating device, a pressure regulating device and a pressure regulating device, wherein two sides of the pressure regulating device are fixedly connected with a sleeve, a T-shaped part is arranged in the sleeve, the T-shaped part comprises a flange shaft and a flange plate fixedly connected with the flange shaft, the flange shaft is arranged in the sleeve, the flange plate is fixedly connected with a rotating arm, the rotating arm is positioned between the flange plate and the sleeve, a square hole is formed in the rotating arm, the flange shaft penetrates through the square hole, the upper dimension and the lower dimension of the square hole are consistent with the diameter of the flange shaft, and the left dimension and the right dimension of the square hole are larger than the diameter of the flange shaft;

the pressure adjusting device comprises a disc spring, a shaft sleeve and a disc spring bin, wherein the shaft sleeve is arranged on a step of the tensioning rod, the disc spring is sleeved on the shaft sleeve, the disc spring bin is arranged on the outer side of the disc spring, two sides of the disc spring bin are fixedly connected with sleeves, and the upper end of the disc spring bin is connected with a bolt in a threaded mode and used for compressing the disc spring.

And a backing plate is arranged between the lower end of the bolt and the disc spring.

The upper surface and the lower surface of the flange shaft, which are in contact with the rotating arm, are arranged to be planes, and the upper plane and the lower plane are in clearance fit with the upper edge and the lower edge of the square hole.

Compared with the prior art, the utility model has the following benefits: according to the utility model, through improving the valve cover connecting structure, the valve cover adjusting device is designed, the valve cover position is adjustable, the problems of non-concentricity in valve cover installation and air leakage after the sealing pressure is reduced are solved, the manufacturing difficulty is reduced, the sealing service life is prolonged, the on-line adjustment and maintenance are convenient, and the air-break time caused by air leakage is reduced.

Drawings

Fig. 1 is a front view of the present utility model.

Fig. 2 is an enlarged view of the damper adjustment mechanism at B in fig. 1.

Fig. 3 is a top view of the present utility model.

FIG. 4 is a cross-sectional view A-A of the present utility model.

Wherein 1 is a tension rod; 2 is a nut; 3 is a rotating arm; 4 is a valve cover; 5 is a valve seat; 6 is a sealing ring; 7 is a flange plate; 8 is a flange shaft; 9 is a sleeve; 10 is a disc spring bin; 11 is a bolt; 12 is a square hole; 13 is a fastener; 14 is a sleeve; 15 is a disc spring; 16 is a backing plate.

Detailed Description

In order to make the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, are intended to fall within the scope of the present utility model. Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model.

The utility model will now be further described with reference to examples, figures:

as shown in fig. 1-4, an adjusting device of a counterweight-free gas diffusing valve cover 4 comprises a valve seat 5, a valve cover 4 and a rotating arm 3, wherein the valve cover 4 is arranged on the valve seat 5, a sealing ring 6 is arranged between the valve seat 5 and the valve cover 4, the upper end of the valve cover 4 is in spherical hinge with a tensioning rod 1, a step is arranged on the tensioning rod 1, a pressure adjusting device is arranged on the step, the tensioning rod 1 penetrates through the pressure adjusting device, and the upper end of the tensioning rod 1 is in threaded connection with a nut 2.

The pressure adjusting device both sides are fixed connection sleeve 9, set up T type spare in the sleeve 9, T type spare include flange axle 8 and with flange axle 8 fixed connection's ring flange 7, flange axle 8 sets up in sleeve 9, ring flange 7 passes through fastener 13 with rocking arm 3 fixed, rocking arm 3 is located between ring flange 7 and the sleeve 9, set up square hole 12 above the rocking arm 3, flange axle 8 passes square hole 12, the upper and lower size of square hole 12 is unanimous with the diameter of flange axle 8, the size is greater than the diameter of flange axle 8 about square hole 12. The flange shaft 8 cannot move up and down, but can only move left and right, so that the concentric position of the valve cover 4 can be found in advance before the flange 7 is fastened, and then the flange 7 is directly fixed, and the valve cover 4 moves. Therefore, the allowable error range can be enlarged, and the processing and manufacturing difficulty of parts is reduced.

The pressure adjusting device comprises a disc spring 15, a shaft sleeve 14 and a disc spring bin 10, wherein the shaft sleeve 14 is arranged on a step of the tension rod 1, the disc spring 15 is sleeved on the shaft sleeve 14, the disc spring bin 10 is arranged on the outer side of the disc spring 15, the two sides of the disc spring bin 10 are fixedly connected with the sleeve 9, the upper end of the disc spring bin 10 is connected with the bolt 11 through threads, and the bolt 11 is used for compressing the disc spring 15. A backing plate 16 is arranged between the lower end of the bolt 11 and the disc spring 15. When the valve is closed, the valve cover 4 is driven by the rotating arm 3 to rotate, and the force of the rotating arm 3 is finally transmitted to the valve cover 4 through the disc spring bin 10 to press the sealing ring 6 on the valve seat 5. When the disc spring bin 10 acts on the valve cover 4 to reduce the force or the elasticity of the sealing ring 6 to reduce the air leakage, the spanner can be used for screwing the adjusting bolt 11 to press downwards, and the generated pressure is transmitted to the valve cover 4 through the base plate 16, the disc spring 15, the shaft sleeve 14 and the tension rod 1 to compress the sealing ring 6 to realize sealing again. The bolts 11 should be symmetrically arranged so that a better even distribution of the pressure is achieved.

The upper and lower surfaces of the flange shaft 8, which are in contact with the rotating arm 3, are plane surfaces, and the upper and lower plane surfaces are in clearance fit with the upper and lower edges of the square hole 12. The flange shaft 8 can slide in the square hole 12 after being installed, so that the positions of the disc spring bin 10 and the valve cover 4 can be adjusted until the valve cover 4 is concentric with the valve body.

The working process of the utility model is as follows:

the upper part of the valve cover 4 is provided with a disc spring bin 10, and a plurality of disc springs 15 are adopted in the valve cover to realize different sealing pressures in a superposition mode in different modes. The pressure generated by the disc spring 15 is transmitted to the valve cover 4 through the pressing sleeve and the tension rod 1 to be tightly attached to the sealing ring 6 of the valve seat 5 so as to realize sealing. Meanwhile, a threaded hole is formed in the upper portion of the disc spring bin 10, an adjusting bolt 11 is arranged, when the sealing pressure is insufficient or the sealing ring 6 elastically descends and leaks air, the adjusting bolt 11 is screwed by a wrench to be pressed down, and the generated pressure is transmitted to the valve cover 4 through the base plate 16 and the disc spring 15 to achieve sealing again. The ears at two sides of the disc spring bin 10 are provided with shaft holes and internally provided with shaft sleeves 14, and are connected with the rotating arm 3 through flange shafts 8. One side of the flange shaft 8 is cylindrical and is connected with the shaft hole of the disc spring bin 10; the upper and lower surfaces of the neck of the other side are processed into a plane and provided with flanges, meanwhile, both sides of the rotating arm 3 are also processed into square long holes, and the flange shaft 8 can slide in the long holes after being installed, so that the positions of the disc spring bin 10 and the valve cover 4 are adjusted until the valve cover 4 is concentric with the valve body, and the flange shaft 8 and the bolt 11 of the rotating arm 3 are matched and fixed through the fastener 13.

The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that it will be apparent to those skilled in the art that several changes and modifications can be made without departing from the general inventive concept, and these should also be regarded as the scope of the utility model.

Claims

1. The utility model provides an adjusting device of no counter weight coal gas diffusing valve gap, includes disk seat (5), valve gap (4) and rocking arm (3), set up valve gap (4) on disk seat (5), set up sealing washer (6) between disk seat (5) and valve gap (4), its characterized in that, valve gap (4) upper end ball joint tensioning lever (1), set up the step on tensioning lever (1), set up pressure adjustment device on the step, tensioning lever (1) pass pressure adjustment device, tensioning lever (1) upper end threaded connection nut (2);

the pressure regulating device is characterized in that two sides of the pressure regulating device are fixedly connected with a sleeve (9), a T-shaped part is arranged in the sleeve (9), the T-shaped part comprises a flange shaft (8) and a flange plate (7) fixedly connected with the flange shaft (8), the flange shaft (8) is arranged in the sleeve (9), the flange plate (7) is fixedly connected with a rotating arm (3), the rotating arm (3) is positioned between the flange plate (7) and the sleeve (9), a square hole (12) is formed in the rotating arm (3), the flange shaft (8) penetrates through the square hole (12), the upper and lower dimensions of the square hole (12) are consistent with the diameter of the flange shaft (8), and the left and right dimensions of the square hole (12) are larger than the diameter of the flange shaft (8);

the pressure adjusting device comprises a disc spring (15), a shaft sleeve (14) and a disc spring bin (10), wherein the shaft sleeve (14) is arranged on a step of a tension rod (1), the disc spring (15) is sleeved on the shaft sleeve (14), the disc spring bin (10) is arranged on the outer side of the disc spring (15), two sides of the disc spring bin (10) are fixedly connected with sleeves (9), the upper end of the disc spring bin (10) is connected with a bolt (11) in a threaded mode, and the bolt (11) is used for compressing the disc spring (15).

2. The adjusting device of the weighting-free gas diffusing valve cover according to claim 1, wherein a backing plate (16) is arranged between the lower end of the bolt (11) and the disc spring (15).

3. The adjusting device of the weighting-free gas diffusion valve cover according to claim 1, wherein the upper surface and the lower surface of the flange shaft (8) which are contacted with the rotating arm (3) are plane surfaces, and the upper surface and the lower surface are in clearance fit with the upper edge and the lower edge of the square hole (12).