阅读说明：本技术 一种球面控制阀 (Spherical control valve ) 是由 钱凯峰 韩冬傲 徐玉美 倪燕 纪福成 于 2021-09-29 设计创作，主要内容包括：一种球面控制阀,包括阀体、阀轴、球面阀板,球面阀板通过传动机构与阀轴联动,球面阀板上设有T型密封圈,球面阀板上配有调节螺栓,阀体底部设有补水阀、排水阀,阀体上部设有排气阀。本发明的有益效果是,克服了使用两台阀门必须协调分别操作的不足,同时具有可靠保持有毒气体不泄漏到隔离区域的功能。(A spherical control valve comprises a valve body, a valve shaft and a spherical valve plate, wherein the spherical valve plate is linked with the valve shaft through a transmission mechanism, a T-shaped sealing ring is arranged on the spherical valve plate, an adjusting bolt is arranged on the spherical valve plate, a water replenishing valve and a water draining valve are arranged at the bottom of the valve body, and an exhaust valve is arranged at the upper part of the valve body. The invention has the advantages of overcoming the defect that two valves are used and must be coordinated and respectively operated, and simultaneously having the function of reliably keeping toxic gas from leaking to an isolation area.)

1. The utility model provides a spherical control valve, includes valve body, valve shaft, sphere valve plate, its characterized in that, the sphere valve plate passes through drive mechanism and valve shaft linkage, be equipped with the sealing washer on the sphere valve plate, be furnished with adjusting bolt on the sphere valve plate, the valve body bottom is equipped with moisturizing valve, drain valve, and valve body upper portion is equipped with discharge valve.

2. A ball valve control valve according to claim 1, wherein said transmission mechanism comprises a link, a pin, and a bearing.

3. The ball valve control valve according to claim 2, wherein the bearing is made of stainless steel, and the inner and outer bore surfaces are made of nickel-based alloy by spraying.

4. The ball valve control valve of claim 3, wherein the nickel-based alloy has a hardness of 48 to 52HRC, a thickness greater than 0.75mm, and a surface roughness greater than Ra1.6.

5. A ball valve control valve according to claim 4, wherein said sealing ring is a T-shaped sealing ring.

Technical Field

The invention relates to a spherical control valve.

Background

In the metallurgical steel industry, due to the high risk of gas, the traditional partition device usually adopts a combination form of a butterfly valve and a glasses valve. When the door is closed and opened, a set of strict safe operation sequence is provided, and the operation is troublesome. If adopt the NK valve to cut off, the case of traditional NK valve props open steering mechanism structure complicacy, and the oiling chamber often leaks oil, and the valve fault rate is high.

Disclosure of Invention

In order to solve the defects of the prior art, the invention provides a spherical control valve.

The technical scheme includes that the spherical control valve comprises a valve body, a valve shaft and a spherical valve plate, wherein the spherical valve plate is linked with the valve shaft through a transmission mechanism, a T-shaped sealing ring is arranged on the spherical valve plate, an adjusting bolt is arranged on the spherical valve plate, a water replenishing valve and a water draining valve are arranged at the bottom of the valve body, and an air exhausting valve is arranged at the upper part of the valve body.

Preferably, the transmission mechanism is a bidirectional multi-link mechanism and comprises a connecting rod, a pin shaft and a bearing.

Preferably, the bearing is made of stainless steel, and the surfaces of the inner hole and the outer hole are sprayed with nickel-based alloy.

Preferably, the hardness of the nickel-based alloy is 48-52 HRC, the thickness is larger than 0.75mm, and the surface roughness is larger than Ra1.6.

Preferably, the seal ring is a T-shaped seal ring.

The invention has the advantages that the defect that the combination valve of the original butterfly valve glasses valve needs to be operated by two valves in a coordinated and separated way is overcome, so that the valves are simple to operate; the problems that a valve core opening steering mechanism of a traditional NK valve is complex in structure and a valve shaft guide groove is prone to being blocked and damaged are solved, and the problems that an original oil injection cavity is prone to oil leakage and the failure rate of a valve is high are solved.

Drawings

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

FIG. 2 is a left side view of a partial structure of the present invention;

FIG. 3 is a partial diagrammatic view of the transmission;

FIG. 4 is a schematic view of a ball valve plate motion trajectory;

FIG. 5 is a partial schematic view of the adjusting bolt of FIG. 1;

in the figure: 1. a drive device; 2. a valve body; 3. a valve shaft; 4. a spherical valve plate; 401. the motion trajectory of the right spherical valve plate; 402. the motion trajectory of the left spherical valve plate; 5. a transmission mechanism; 501. a connecting rod; 502. a pin shaft; 503. a bearing; 6. a seal ring; 7. adjusting the bolt; 8. a water replenishing valve; 9. a drain valve; 10. and (4) exhausting the valve.

Detailed Description

As shown in the figure, the spherical control valve comprises a valve body 2, a valve shaft 3 and a spherical valve plate 4, wherein the spherical valve plate 4 is linked with the valve shaft 3 through a transmission mechanism 5, a sealing ring 6 is arranged on the spherical valve plate 4, an adjusting bolt 7 is arranged on the spherical valve plate 4, a water replenishing valve 8 and a water draining valve 9 are arranged at the bottom of the valve body 2, and an exhaust valve 10 is arranged at the upper part of the valve body 2.

When the valve needs to be closed, the driving device 1 drives the valve shaft 3 to rotate, the transmission mechanism 5 drives the spherical valve plate 4 to rotate firstly and then expand, closing and sealing of the valve are achieved, the transmission mechanism 5 comprises a connecting rod 501, a pin shaft 502 and a bearing 503, and valve closing action of rotating firstly and then expanding or valve opening action of rotating firstly and then expanding can be achieved. After the valve is closed in place, the drain valve 9 is closed, the exhaust valve 10 is opened, the water supplementing valve 8 is opened, water is injected into the inner cavity of the valve body 2, air in the inner cavity of the valve body 2 is exhausted out of the valve body 2 through the exhaust valve 10, the height of an exhaust and drainage pipeline connected behind the exhaust valve 10 is higher than that of the valve, the water supplementing valve 8 injects water into the valve body 2 until air in the valve body 2 is exhausted, the water supplementing valve 8 is closed after the water seal height of the valve is kept, and at the moment, the water seal pressure in the valve body 2 is higher than the medium pressure in the pipeline, so that medium circulation can be completely cut off.

When the valve needs to be opened, the water replenishing valve 8 is closed, the exhaust valve 10 is opened, the drain valve 9 is closed after the water in the inner cavity of the valve body 2 is drained, the exhaust valve 10 is closed, the driving device 1 drives the valve shaft 3 to rotate reversely, and the transmission mechanism 5 drives the spherical valve plate 4 to contract and then rotate to open the valve.

The spherical valve plate 4 is provided with the adjusting bolt 7, the relative angle between the sealing ring 6 on the spherical valve plate 4 and the sealing surface of the valve seat can be finely adjusted, the sealing force between the valve seat and the sealing ring can be adjusted, the sealing ring 6 is uniformly stressed in the whole circle and has the same sealing pressure, and the sealing ring 6 is a T-shaped sealing ring, so that the sealing performance is ensured. In the transmission mechanism 5, a base body adopted by the bearing 503 at the position of the connecting rod 501 and the pin shaft 502 is made of stainless steel, the surfaces of the inner hole and the outer hole are made of flame spraying nickel-based alloy, the hardness of the nickel-based alloy is 48-52 HRC, the thickness of the nickel-based alloy is larger than 0.75mm, the surface roughness of the nickel-based alloy is larger than Ra1.6, the sliding performance between the pin shaft 502 and the bearing 503 is ensured, the problems that the original copper shaft sleeve is soft in material and easy to wear, and action deviation is caused after a long time are solved, and the service life is prolonged.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.