CN210318717U - High-sealing ball valve - Google Patents
High-sealing ball valve Download PDFInfo
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- CN210318717U CN210318717U CN201920621877.0U CN201920621877U CN210318717U CN 210318717 U CN210318717 U CN 210318717U CN 201920621877 U CN201920621877 U CN 201920621877U CN 210318717 U CN210318717 U CN 210318717U
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- pressurizing
- seat
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Abstract
The utility model relates to the field of valves, and discloses a high-sealing ball valve, which comprises a valve body, a valve rod, a valve ball, a sealing valve seat, a sealing pressurizing mechanism, a lower sealing cover and an upper sealing cover; the sealing and pressurizing mechanism comprises a pressurizing rotating rod, a driving gear, a driven gear, a pressurizing movable shaft, a pressurizing block and a movable sealing valve seat. The utility model adopts the sealing pressurizing mechanism, in the process of opening and closing the ball valve, the contact stress between the pressurizing block and the movable sealing valve seat is reduced, so that the friction between the movable valve seat and the ball valve is reduced, the opening and closing fluency is improved, the abrasion is reduced, and the service life of the ball valve is prolonged; in the closing process of the ball valve, the contact stress between the pressurizing block and the movable sealing valve seat is increased, the sealing performance and the stability of the ball valve are improved, and the maintenance cost of workers is saved.
Description
Technical Field
The utility model relates to a valve field, in particular to high sealed ball valve.
Background
A general ball valve opening and closing member is mostly a circular sphere. The valve rod drives the valve ball to rotate for a certain angle, so that the through hole on the valve ball corresponds to or is staggered with the flow channel of the valve, and the opening or closing of the ball valve is realized. The main characteristics are as follows: simple structure, even sealing stress, reliable sealing performance, rapid opening and closing, and convenient maintenance and operation.
Traditional ball valve is at the in-process of switching, because the moment of torsion of valve rod is big, and the valve ball produces the friction with the disk seat, easily causes to reveal, has reduced the reliability and the leakproofness of ball valve, has shortened the life of ball valve, has also increased workman's cost of maintenance simultaneously.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model aims to provide a high-sealing ball valve, which reduces the contact stress between a pressurizing block and a movable sealing valve seat by adopting a sealing pressurizing mechanism in the opening and closing process of the ball valve, so that the friction between the movable valve seat and a valve ball is reduced, the opening and closing fluency is improved, the abrasion is reduced, and the service life of the ball valve is prolonged; in the closing process of the ball valve, the contact stress between the pressurizing block and the movable sealing valve seat is increased, the sealing performance and the stability of the ball valve are improved, and the maintenance cost of workers is saved.
In order to achieve the above purpose, the technical scheme of the utility model is as follows:
a high-sealing ball valve comprises a valve body, a valve rod, a valve ball, a sealing valve seat, a sealing pressurizing mechanism, a lower sealing cover and an upper sealing cover; a valve cavity for mounting the valve ball is arranged in the valve body; the valve ball is positioned in the valve cavity; the lower end of the valve body is provided with the lower sealing cover; the sealing valve seat is arranged between the valve ball and the lower sealing cover; the upper sealing cover is arranged at the upper part of the valve body and is positioned at the corresponding position of the lower sealing cover; the upper end of the valve ball is provided with the valve rod for driving the valve ball to rotate, and the valve rod penetrates through the upper sealing cover and is in sealing contact with the upper sealing cover; the sealing pressurization mechanism comprises a pressurization rotating rod, a driving gear, a driven gear, a pressurization movable shaft, a pressurization block and a movable sealing valve seat; the pressurizing rotating rod is of a cylindrical structure and is sleeved on the valve rod; the driving gear is sleeved outside the pressurizing rotating rod and rotates synchronously with the pressurizing rotating rod; two driven gears are symmetrically arranged on two sides of the driving gear, and the driving gear is meshed with the driven gears; the driven gear is sleeved on the pressure applying movable shaft and synchronously rotates with the pressure applying movable shaft; a ball spiral groove spirally surrounding the surface of the pressing movable shaft is arranged at the upper part of the pressing movable shaft; a ball retaining hole is formed in the upper sealing cover; a driving ball is arranged in the ball retaining hole; the driving balls are positioned on two sides of the pressure-applying movable shaft and clamped in the ball spiral grooves; a pressurizing block is arranged at the lower part of the pressurizing movable shaft; the pressurizing block is pressed on the movable sealing seat; the movable sealing seat is arranged at the top end of the valve ball.
As a preferred scheme of the utility model, a positioning shaft is arranged in the lower sealing cover; the front end of the positioning shaft extends into the ball valve, so that the stability of the high-sealing ball valve is improved.
As a preferred scheme of the utility model, install on the sealed disk seat with the seal ring of valve ball contact.
As a preferred scheme of the utility model, install in the upper seal cover with pressurization dwang complex sealed axle sleeve.
As an optimal scheme of the utility model, be provided with 0 type sealing washer between valve body and the sealed disk seat, prevent that the valve body from producing and revealing, cause environmental pollution.
As a preferable scheme of the present invention, the diameter of the driving gear is 3 to 10 times larger than that of the driven gear.
As an optimized scheme of the utility model, install fastening nut on the valve rod, guaranteed that the pressurization dwang can not carry out the axial and rock.
To sum up, the utility model discloses following beneficial effect has: by adopting the sealing and pressurizing mechanism, in the opening and closing process of the ball valve, the contact stress between the pressurizing block and the movable sealing valve seat is reduced, so that the friction between the movable valve seat and the ball valve is reduced, the opening and closing fluency is improved, the abrasion is reduced, and the service life of the ball valve is prolonged; in the closing process of the ball valve, the contact stress between the pressurizing block and the movable sealing valve seat is increased, the sealing performance and the stability of the ball valve are improved, and the maintenance cost of workers is saved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view of the full-section structure of the present invention.
Fig. 2 is a schematic view of the gear engagement structure of the present invention.
Fig. 3 is a schematic view of the upper cover structure of the present invention.
The corresponding part names indicated by the numbers and letters in the drawings:
1-driven gear 2-driving gear 3-valve rod 4-fastening nut
5-pressurizing rotating rod 6-sealing shaft sleeve 7-driving ball 8-ball spiral groove
9-pressing movable shaft 10-pressing block 11-movable sealing valve seat 12-valve body
13-O-shaped sealing ring 14-valve ball 15-positioning shaft 16-sealing washer
17-lower closure 18-upper closure 19-sealing valve seat 20-ball retaining aperture.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Examples
As shown in fig. 1 to 3, the present invention relates to a high-sealing ball valve, and specifically, the present invention comprises a valve body 12, a valve rod 3, a valve ball 14, a sealing valve seat 19, a sealing pressurizing mechanism 0, a lower sealing cover 17 and an upper sealing cover 18;
the valve body 12 is provided with a valve cavity for installing the valve ball 14, and the valve ball 14 is positioned in the valve cavity and used for blocking or communicating liquid. The lower end of the valve body 12 is provided with a lower sealing cover 17, a positioning shaft 15 is arranged in the lower sealing cover 17, and the front end of the positioning shaft 15 extends into the valve ball 14, so that the stability of the valve ball 14 in the rotating process is ensured. A sealing valve seat 19 is arranged between the valve ball 14 and the lower sealing cover 17, a sealing gasket 16 which is contacted with the valve ball 14 is arranged on the sealing valve seat 19, and the liquid is ensured not to flow out easily through the sealing contact between the sealing valve seat 19 and the valve ball 14. An upper sealing cover 18 is arranged on the upper part of the valve body 12, the upper sealing cover 18 is positioned at the corresponding position of the lower sealing cover 17, and a sealing shaft sleeve 6 matched with the pressurization rotating rod 5 is arranged in the upper sealing cover 18. The upper end of the valve ball 14 is provided with a valve rod 3 for driving the valve ball 14 to rotate, and the valve rod 3 penetrates through the upper sealing cover 18 and is in sealing contact with the upper sealing cover 18. An O-shaped sealing ring 13 is arranged between the valve body 12 and the sealing valve seat 19, so that the sealing performance of the ball valve is ensured. The sealing pressurization mechanism comprises a pressurization rotating rod 5, a driving gear 2, a driven gear 1, a pressurization movable shaft 9, a pressurization block 10 and a movable sealing valve seat 11. The pressurizing rotating rod 5 is of a cylindrical structure and is sleeved on the valve rod 3. Install fastening nut 4 on the valve rod 3, prevented that 5 axial rockers of pressurization dwang have improved the stability of ball valve. The pressurizing rotating rod 5 is sleeved with a driving gear 2, the driving gear 2 and the pressurizing rotating rod 5 synchronously rotate, two driven gears 1 are symmetrically arranged on two sides of the driving gear 2, the driving gear 2 is meshed with the driven gears 1, and meanwhile the diameter of the driving gear 2 is 3-10 times larger than that of the driven gears 1. The driven gear 1 is sleeved on the pressure applying movable shaft 9, and the driven gear 1 and the pressure applying movable shaft 9 rotate synchronously. The upper part of the pressure-applying movable shaft 9 is provided with a ball spiral groove 8 spirally surrounding the surface of the pressure-applying movable shaft 9, the upper sealing cover 18 is internally provided with a ball retaining hole 20, the ball retaining hole 20 is internally provided with a driving ball 7, the driving ball 7 is positioned at two sides of the pressure-applying movable shaft 9, the driving ball 7 is clamped in the ball spiral groove 8, and the pressure-applying movable shaft 9 is limited to only do axial movement. The lower part of the pressure-applying movable shaft 9 is provided with a pressure-applying block 10, the pressure-applying block 10 is pressed on a movable sealing seat 11, and the movable sealing seat 11 is arranged at the top end of a valve ball 14, so that the contact stress between the pressure-applying block 10 and the movable sealing seat 11 is increased or reduced, and the stability and the sealing property of the ball valve are ensured.
The utility model discloses an action process: in the opening and closing process of the ball valve, the fastening nut 4 is loosened, the pressurizing rotating rod 5 is rotated, the driving gear 2 is driven to rotate, and the driven gear 1 and the pressurizing movable shaft 9 synchronously rotate. Because the upper part of the pressure-applying movable shaft 9 is provided with the ball spiral groove 8, the pressure-applying movable shaft 9 can only do axial movement, when the pressure-applying movable shaft 9 rises, the stress of the contact surface of the pressure-applying block 10 and the movable sealing valve seat 11 is reduced, and the rotation of the ball valve is ensured. When the pressure-applying movable shaft 9 descends, the stress of the contact surface of the pressure-applying block 10 and the movable valve seat 11 is increased, and meanwhile, the fastening nut 4 is screwed downwards, so that the closing of the ball valve is realized.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. A high-sealing ball valve is characterized by comprising a valve body, a valve rod, a valve ball, a sealing valve seat, a sealing pressurizing mechanism, a lower sealing cover and an upper sealing cover; a valve cavity for mounting the valve ball is arranged in the valve body; the valve ball is positioned in the valve cavity; the lower end of the valve body is provided with the lower sealing cover; the sealing valve seat is arranged between the valve ball and the lower sealing cover; the upper sealing cover is arranged at the upper part of the valve body and is positioned at the corresponding position of the lower sealing cover; the upper end of the valve ball is provided with the valve rod for driving the valve ball to rotate, and the valve rod penetrates through the upper sealing cover and is in sealing contact with the upper sealing cover; the sealing pressurization mechanism comprises a pressurization rotating rod, a driving gear, a driven gear, a pressurization movable shaft, a pressurization block and a movable sealing valve seat; the pressurizing rotating rod is of a cylindrical structure and is sleeved on the valve rod; the driving gear is sleeved outside the pressurizing rotating rod and rotates synchronously with the pressurizing rotating rod; two driven gears are symmetrically arranged on two sides of the driving gear, and the driving gear is meshed with the driven gears; the driven gear is sleeved on the pressure applying movable shaft and synchronously rotates with the pressure applying movable shaft; a ball spiral groove spirally surrounding the surface of the pressing movable shaft is arranged at the upper part of the pressing movable shaft; a ball retaining hole is formed in the upper sealing cover; a driving ball is arranged in the ball retaining hole; the driving balls are positioned on two sides of the pressure-applying movable shaft and clamped in the ball spiral grooves; a pressurizing block is arranged at the lower part of the pressurizing movable shaft; the pressurizing block is pressed on the movable sealing seat; the movable sealing seat is arranged at the top end of the valve ball.
2. The high seal ball valve of claim 1, wherein a locating shaft is mounted in the lower cover; the front end of the positioning shaft extends into the valve ball.
3. The high seal ball valve of claim 1, wherein a sealing gasket is mounted on the sealing seat in contact with the valve ball.
4. The high seal ball valve of claim 1, wherein a seal bushing is mounted in the upper cover to engage the pressurized rotating rod.
5. The high seal ball valve of claim 1, wherein a type 0 seal is disposed between the valve body and the seal seat.
6. The high seal ball valve of claim 1, wherein the diameter of the driving gear is 3-10 times larger than the diameter of the driven gear.
7. The high seal ball valve of claim 1, wherein a fastening nut is mounted on the valve stem.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920621877.0U CN210318717U (en) | 2019-04-30 | 2019-04-30 | High-sealing ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920621877.0U CN210318717U (en) | 2019-04-30 | 2019-04-30 | High-sealing ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210318717U true CN210318717U (en) | 2020-04-14 |
Family
ID=70137487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920621877.0U Active CN210318717U (en) | 2019-04-30 | 2019-04-30 | High-sealing ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210318717U (en) |
-
2019
- 2019-04-30 CN CN201920621877.0U patent/CN210318717U/en active Active
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