阅读说明：本技术 外部气源控制阀座的球阀 (Ball valve of external air source control valve seat ) 是由 岑进肖 武兴广 陈小林 刘杰 宋虬 于 2021-09-03 设计创作，主要内容包括：本发明涉及外部气源控制阀座的球阀,其阀体内设球芯,阀体上还设有阀座,阀座为浮动阀座,阀体上设有凹槽容纳圈内,凹槽容纳圈的开口朝向球芯,凹槽容纳圈的开口处还配有限位压圈,限位压圈连接在阀体上,凹槽容纳圈与限位压圈之间形成浮动空间,阀座配置在浮动空间内,限位压圈与阀体之间还留有供浮动阀座浮动伸缩的环形口,阀体上设第一气通道和第二气动道,第一气通道的衔接口配置在浮动空间的外侧,第二气通道的衔接口配置在浮动空间的内侧。其可以接入外部气源,配合进行控制,能够让浮动阀座相对球芯进行浮动,从而能够提高阀座与球芯的密封效果,增加阀门的密封性能,并且降低阀座与阀芯磨损,提高使用寿命,更实用。(The invention relates to a ball valve of an external air source control valve seat, wherein a ball core is arranged in a valve body, the valve body is also provided with a valve seat, the valve seat is a floating valve seat, the valve body is provided with a groove accommodating ring, the opening of the groove accommodating ring faces the ball core, the opening of the groove accommodating ring is also provided with a limiting pressing ring, the limiting pressing ring is connected to the valve body, a floating space is formed between the groove accommodating ring and the limiting pressing ring, the valve seat is arranged in the floating space, an annular opening for floating and stretching of the floating valve seat is also reserved between the limiting pressing ring and the valve body, the valve body is provided with a first air passage and a second air passage, a joint of the first air passage is arranged at the outer side of the floating space, and a joint of the second air passage is arranged at the inner side of the floating space. It can insert outside air supply, and the cooperation is controlled, can let the relative ball core of disk seat that floats float and float to can improve the sealed effect of disk seat and ball core, increase the sealing performance of valve, and reduce disk seat and case wearing and tearing, improve life, it is more practical.)

1. Ball valve of outside air supply control disk seat, including valve body (1), be equipped with ball core (2) in valve body (1), still be equipped with on valve body (1) with ball core (2) cooperation sealed disk seat, its characterized in that: the valve seat is a floating valve seat (3), a groove containing ring (4) is arranged on the valve body (1), the opening of the groove containing ring (4) faces the ball core (2), a limiting pressing ring (5) is further arranged at the opening of the groove containing ring (4), the limiting pressing ring (5) is connected to the valve body (1), a floating space (6) is formed between the groove containing ring (4) and the limiting pressing ring (5), the valve seat is arranged in the floating space (6), an annular opening for floating and stretching of the floating valve seat (3) is further reserved between the limiting pressing ring (5) and the valve body (1), a first air channel (8) and a second air channel (9) are arranged on the valve body (1), the first air channel (8) and the second air channel are respectively communicated with the floating space (6), a joint of the first air channel (8) is arranged on the outer side of the floating space (6), and a joint of the second air channel is arranged on the inner side of the floating space (6).

2. The external air supply control valve seat ball valve of claim 1, wherein: the limiting pressing ring (5) is connected with the valve body (1) through a fastener (12), and a first sealing ring (13) is arranged between the limiting pressing ring (5) and the valve body (1).

3. The external air supply control valve seat ball valve of claim 1, wherein: the floating valve seat (3) is provided with a first limiting step (16), the first limiting step (16) is matched with the limiting pressing ring (5), and a second sealing ring (14) is arranged on a sliding surface between the floating valve seat (3) and the limiting pressing ring (5).

4. The external air supply control valve seat ball valve of claim 1, wherein: and sliding surfaces between the floating valve seat (3) and the groove accommodating ring (4) on the valve body (1) are respectively provided with a third sealing ring (15).

5. The external air supply control valve seat ball valve of claim 4, wherein: the joint ports of the first air channel (8) and the second air channel are respectively positioned at two sides of the floating valve seat (3).

6. The external air supply control valve seat ball valve of claim 1, wherein: the floating valve seat (3) is also provided with a second limit step (17), the valve body (1) is provided with a third limit step (18), and the second limit step (17) is matched with the third limit step (18).

Technical Field

The present invention relates to ball valves.

Background

The valve body of the ball valve is internally provided with a ball core which is matched with the valve seat to seal, so that the valve is opened and closed. Under the influence of the pressure and the temperature of a pipeline and the like, the valve seat pre-tightened by only matching the spring and the ball core are sealed in a matching way, so that the defects exist, for example, the sealing capability cannot be ensured, and the sealing effect is influenced by the pressure or temperature fluctuation; in addition, the ball core pre-tightened by the spring is always in contact with the valve seat, the valve is seriously abraded, the service life is short, the leakage risk is large, the ball core and the valve seat are kept in contact with the opening and closing process of the switch, the influence of particle impurities in a medium is large, the abrasion degree is increased, and the sealing fit between the valve seat and the ball core is influenced due to the fact that the spring fails when the impurities in the medium enter the spring cavity.

Disclosure of Invention

In view of the technical problems in the background art, the technical problem to be solved by the invention is to provide an external air source control valve seat ball valve. This ball valve can insert outside air supply and realize control, lets its disk seat float, and the cooperation cooperates with the ball core, and sealed effect is better, and the life-span improves relatively.

In order to solve the technical problems, the invention adopts the following technical scheme: ball valve of outside air supply control disk seat, including the valve body, be equipped with the ball core in the valve body, still be equipped with on the valve body with the sealed disk seat of ball core cooperation, its characterized in that: the valve seat is a floating valve seat, a groove containing ring is arranged on the valve body, the opening of the groove containing ring faces the ball core, a limiting pressing ring is further arranged at the opening of the groove containing ring and connected to the valve body, a floating space is formed between the groove containing ring and the limiting pressing ring, the valve seat is arranged in the floating space, an annular opening for floating and stretching of the floating valve seat is further reserved between the limiting pressing ring and the valve body, the annular opening is an opening of the floating space, a first air channel and a second air channel are arranged on the valve body and are respectively communicated with the floating space, a connecting port of the first air channel is arranged on the outer side of the floating space, and a connecting port of the second air channel is arranged on the inner side of the floating space.

The following optimization or supplementary explanation can be performed on the technical scheme.

The limiting pressing ring is connected with the valve body through a fastener, and a first sealing ring is arranged between the limiting pressing ring and the valve body.

The floating valve seat is provided with a first limiting step, the first limiting step is matched with the limiting pressing ring, and a second sealing ring is arranged on a sliding surface between the floating valve seat and the limiting pressing ring.

And sliding surfaces between the floating valve seat and the groove accommodating ring on the valve body are respectively provided with a third sealing ring.

The joint ports of the first air channel and the second air channel are respectively positioned at two sides of the floating valve seat.

The floating valve seat is also provided with a second limiting step, the valve body is provided with a third limiting step, and the second limiting step and the third limiting step are arranged in a matched mode.

The ball valve of the external air source control valve seat has the advantages that the ball valve of the external air source control valve seat can be connected with an external air source and is matched with the external air source for control, and the floating valve seat can float relative to the ball core. When the ball valve is closed, the floating valve seat can be enabled to compress the ball core, the compression sealing can be realized, the influence of the sealing of the pipeline pressure and the temperature is reduced, the bidirectional tight sealing can be kept in the full pressure difference and full temperature range, the defect that the sealing capacity of the traditional ball valve which is sealed by pre-tightening the valve seat by the spring cannot be guaranteed along with the change of the pressure and the temperature is overcome, and the ball valve is more suitable for the harsh working conditions that the pressure and the temperature are large in fluctuation, the valve is required to be well sealed for a long time, and the frequent stopping maintenance and the valve replacement are not allowed. When the ball valve is opened, the floating valve seat can be separated from the ball core (relatively separated), the abrasion of the ball core and the valve seat in the opening and closing process is reduced, the service life of the ball valve is prolonged, the sealing performance of the valve is improved, and the problems that the traditional ball valve is large in opening and closing moment and the ball core and the valve seat are abraded are solved. The valve seat seal without abrasion or friction can not cause abrasion in frequent opening and closing, thereby avoiding the damage of the valve seat seal generated by the ball valve with the traditional structure, greatly prolonging the sealing service life of the ball valve, and still ensuring the zero leakage and tight sealing for a long time under the condition of frequent opening and closing of the valve. Therefore, compared with the prior art, the invention has outstanding substantive features and remarkable progress.

Drawings

The following describes details and operational principles of embodiments and examples of the present invention with reference to the drawings.

Fig. 1 is a schematic structural diagram a of a matching portion between a valve seat and a valve element on a valve body according to the present invention, wherein the valve is in a closed state.

Fig. 2 is a schematic structural diagram B of the valve in fig. 1 in an open state.

In the figure: 1. a valve body; 2. a ball core; 3. a floating valve seat; 4. a groove accommodating ring; 5. a limiting pressing ring; 6. a floating space; 8. a first gas passage; 9. a second pneumatic passage; 12. a fastener; 13. a first seal ring; 14. a second seal ring; 15. a third seal ring; 16. a first limit step; 17. a second limit step; 18. and a third limiting step.

Detailed Description

The technical solution 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; it should be apparent that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work based on the embodiments of the present invention belong to the protection scope of the present invention.

Referring to the attached drawings, the ball valve of the external air source control valve seat in the embodiment of the embodiment comprises a valve body 1, a ball core 2 is arranged in the valve body 1, the ball core 2 can rotate in the valve body 1 and is matched with the valve body to realize opening and closing of the valve, the ball core 2 is driven by a valve rod to rotate, a valve seat is further arranged on the valve body 1, and the valve seat is matched with the ball core 2 to realize corresponding sealing. This is not described in detail for the mature technology.

Wherein the valve seat is a floating valve seat 3, i.e. the valve seat will float, and can move back and forth on the valve body 1. In being equipped with the recess on valve body 1 and holding circle 4, the recess holds the opening of circle 4 and towards ball core 2, and the recess holds the opening part of circle 4 and still is furnished with spacing clamping ring 5, and spacing clamping ring 5 is connected on valve body 1, and the recess holds and forms floating space 6 between circle 4 and the spacing clamping ring 5, and the disk seat configuration is in floating space 6, and the disk seat will match round trip movement in floating space 6 promptly. An annular opening is reserved between the limiting pressing ring 5 and the valve body 1 and is used for floating and stretching of the floating valve seat 3, namely the annular opening is an opening of the floating space 6, and the floating valve seat 3 can extend out and retract through the annular opening so as to be matched with the ball core 2. The valve body 1 is provided with a first air passage 8 and a second air passage 9, the first air passage 8 and the second air passage 9 are used for communicating an air source, the first air passage 8 and the second air passage are respectively communicated with the floating space 6, the joint port 10 of the first air passage 8 is configured at the outer side of the floating space 6, and the joint port 11 of the second air passage is configured at the inner side of the floating space 6, so that after the air source is communicated, the valve body can be matched with and push the floating valve seat 3 to float (i.e. move) correspondingly.

When the valve is closed, the floating valve seat 3 can be matched with an accessed air source to enable the floating valve seat to compress the ball core 2, the compression sealing can be realized, the influence of the sealing of the pipeline pressure and the temperature is reduced, the bidirectional tight sealing can be kept in the full pressure difference and full temperature range, the defect that the sealing capacity of the traditional ball valve which is sealed by pre-tightening the valve seat by the spring cannot be guaranteed along with the change of the pressure and the temperature is overcome, and the valve is more suitable for the harsh working conditions that the pressure and the temperature are large in fluctuation, the valve is required to be well sealed for a long time, and frequent parking maintenance and valve replacement are not allowed. Corresponding floating valve seats 3 can be arranged on both sides of the ball core 2 in the valve body 1 for matching. The higher the external air pressure, the better the corresponding sealing performance.

When the valve is opened, the floating valve seat 3 and the ball core 2 can be separated (relatively separated) through the matching of the connected air source, the abrasion of the ball core 2 and the valve seat in the switching process is reduced, the service life of the ball valve is prolonged, and the problems that the traditional ball valve is large in switching moment and the ball core 2 and the valve seat are abraded are solved. The valve seat seal without abrasion or friction can not cause abrasion in frequent opening and closing, thereby avoiding the damage of the valve seat seal generated by the ball valve with the traditional structure, greatly prolonging the sealing service life of the ball valve, and still ensuring the zero leakage and tight sealing for a long time under the condition of frequent opening and closing of the valve.

This ball valve of outside air supply control disk seat can insert outside air supply, and the cooperation is controlled, can let 3 relative ball cores of disk seat that float 2 float (remove promptly) to can improve the sealed effect of disk seat and ball core 2, increase the sealing performance of valve, and reduce disk seat and case wearing and tearing, improve life, it is more practical.

The following optimization or further explanation can be made on the basis of the above embodiment.

For example, the limiting pressing ring 5 is connected with the valve body 1 through a fastener 12, and processing and assembling are facilitated. A first sealing ring 13 is arranged between the limiting pressing ring 5 and the valve body 1, so that air tightness is ensured, and the floating space 6 is prevented from being leaked between the limiting pressing ring 5 and the valve body 1 after being connected with an air source.

For another example, the floating valve seat 3 is provided with a first limiting step 16, and the first limiting step 16 is matched with the limiting pressing ring 5, so that the floating of the floating valve seat 3 can be relatively stable while the limiting matching is achieved. Wherein, float and move with the gliding mode, the glide plane department between unsteady valve seat 3 and spacing clamping ring 5 is equipped with second sealing washer 14, guarantees between unsteady valve seat 3 and spacing clamping ring 5 gas tightness.

In addition, a third seal ring 15 is provided on the sliding surface between the floating valve seat 3 and the groove receiving ring 4 (side wall) of the valve body 1, respectively, to ensure airtightness between the floating valve seat 3 and the groove receiving ring 4.

The joints of the first air channel 8 and the second air channel are respectively positioned at two sides of the floating valve seat 3. After being connected with an air source for ventilation, the floating valve seat 3 can be pushed to correspondingly float back and forth in a matching way. Corresponding chamfers can be arranged to facilitate ventilation.

Wherein, still have the spacing step 17 of second on the unsteady disk seat 3, be equipped with the spacing step 18 of third on the valve body 1, the spacing step 17 of second sets up with the cooperation of the spacing step 18 of third, can carry out spacing and promote unsteady stability.

In addition, the ball core 2 and the floating valve seat 3 can be designed to be metal and nonmetal double sealing. The surface of the ball core 2 can be welded with a layer of hard polishing sealing surface, so that the tight sealing and zero leakage of the valve seat can be ensured under the harsh working conditions of high pressure difference, frequent switching and medium containing particle impurities. Of course, the floating valve seat 3 can be matched with a spring to assist the ball core 2 to be pressed, the spring is arranged in the floating space 6, and the stability of the spring is not easily influenced by media.

The foregoing is a preferred embodiment of the present invention, and it should be noted that the scope of the present invention is not limited thereto. It will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the scope of the invention as set forth in the claims.