阅读说明：本技术 一种清洗球阀 (Cleaning ball valve ) 是由 李建刚 施俊杰 牛小龙 王清清 于 2021-11-09 设计创作，主要内容包括：一种清洗球阀,包括阀盖、阀体,阀盖底部内安装清洗法兰,阀盖上设有清洗入口,清洗法兰上设有凹形台阶,凹形台阶与阀盖形成清洗介质通道,凹形台阶上设有通孔,通孔对应上空腔的球体表面,阀体底部设置排污口。发明的有益效果是,没有增加球阀的体积、重量,反而充分利用了球阀特有的中腔空间,实现了清洗中腔滞留的介质、异物、杂质或结焦等滞留物,大大提高了球阀寿命。(A cleaning ball valve comprises a valve cover and a valve body, wherein a cleaning flange is installed in the bottom of the valve cover, a cleaning inlet is formed in the valve cover, a concave step is arranged on the cleaning flange, a cleaning medium channel is formed by the concave step and the valve cover, a through hole is formed in the concave step and corresponds to the surface of a ball body of an upper cavity, and a drain outlet is formed in the bottom of the valve body. The invention has the advantages that the volume and the weight of the ball valve are not increased, but the special middle cavity space of the ball valve is fully utilized, the detentes such as media, foreign matters, impurities or coking and the like detained in the middle cavity are cleaned, and the service life of the ball valve is greatly prolonged.)

1. The cleaning ball valve comprises a valve cover and a valve body and is characterized in that a cleaning flange is installed in the bottom of the valve cover, a cleaning inlet is formed in the valve cover, a concave step is arranged on the cleaning flange and forms a cleaning medium channel with the valve cover, a through hole is formed in the concave step and corresponds to the surface of a ball body of an upper cavity, and a drain outlet is formed in the bottom of the valve body.

2. The cleaning ball valve as claimed in claim 1, wherein the valve body at the bottom of the lower cavity has a circular arc structure, and the drain outlet is located on a center line of the circular arc structure.

3. A purge ball valve as claimed in claim 2, wherein said purge inlet is connected to a feed valve and the blowdown port is connected to a blowdown valve.

Technical Field

The invention relates to a ball valve, in particular to a cleaning ball valve.

Background

At present, ball valves used in nuclear power, oil and natural gas industries are generally of a traditional one-piece (top-loading) structure, a two-piece structure or a three-piece structure and the like, and the valve rod/shaft drives a ball body to rotate to open and close the valve. The ball valve has the advantages of small volume, light weight, good flow force, stable and reliable sealing, simple structure, easy maintenance and the like. After long-term use, the traditional ball valve is used under the condition of foreign matters, impurities or coking media, and the foreign matters, the impurities or the coking existing in the media and the process pipeline are easily caused to be retained in the middle cavity of the ball valve, so that the abrasion or scratch between the ball body and the valve seat sealing pair as well as between the valve rod and the bearing during the opening and closing process of the ball valve is caused, the service life of the ball valve is shortened, and the operation of a process system where the valve is located is influenced.

Disclosure of Invention

In order to solve the defects of the prior art, the invention provides a cleaning ball valve.

The technical scheme includes that the cleaning ball valve comprises a valve cover and a valve body, a cleaning flange is installed in the bottom of the valve cover, a cleaning inlet is formed in the valve cover, a concave step is arranged on the cleaning flange, a cleaning medium channel is formed by the concave step and the valve cover, a through hole is formed in the concave step and corresponds to the surface of a ball body of an upper cavity, and a drain outlet is formed in the bottom of the valve body.

Further, the valve body at the bottom of the lower cavity is of a circular arc-shaped structure, and the sewage draining outlet is located on the central line of the circular arc-shaped structure.

Furthermore, the cleaning inlet is connected with a water inlet valve, and the sewage draining outlet is connected with a sewage draining valve.

Compared with the traditional ball valve, the ball valve has the advantages that the ball valve not only keeps the small volume, light weight, good flow capacity, stable and reliable sealing, simple structure and easy maintenance of the traditional ball valve, but also realizes the cleaning of the retentate such as media, foreign matters, impurities or coking and the like retained in the middle cavity, reduces the disassembly or replacement frequency of the ball valve, reduces the labor intensity of workers, and reduces the maintenance cost of the owner in the use process.

Drawings

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

FIG. 2 is a schematic cross-sectional view of a cleaning flange;

FIG. 3 is a three-dimensional view of a cleaning flange.

In the figure: 1. a valve cover; 2. cleaning the inlet; 3. cleaning a flange; 4. a sphere; 5. an upper cavity; 6. a lower cavity; 7. a valve body; 8. a through hole; 9. a concave step; 10. a sewage draining outlet.

Detailed Description

As shown in the figure, a wash ball valve, including valve gap 1, valve body 7, installation washing flange 3 in the valve gap 1 bottom, be equipped with on the valve gap 1 and wash entry 2, be equipped with spill step 9 on the washing flange 3, spill step 9 forms the cleaning medium passageway with valve gap 1, be equipped with through-hole 8 on the spill step 9, through-hole 8 corresponds the spheroid 4 surfaces of upper cavity 5, valve body 7 bottom sets up drain 10, the valve body 7 of 6 bottoms of lower cavity is convex structure, drain 10 is located the central line of convex structure, make full use of washs spheroid 4 after, the cleaning medium is through self gravity discharge cavity down, and the cleaning medium gets rid of no dead angle.

The invention does not increase the volume and the weight of the ball valve, but fully utilizes the special middle cavity space of the ball valve, realizes the cleaning of the retention materials such as media, foreign matters, impurities or coking and the like retained in the middle cavity, and greatly improves the service life of the ball valve. Through the through hole 8 on the washing flange 3 and the setting of cleaning medium passageway and washing entry 2 can freely realize the acceleration or the pressure boost of cleaning medium for it is more thorough to the washing of spheroid 4, and the cleaning performance is better.

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.