CN212718145U - Ball valve with pressure relief structure - Google Patents
Ball valve with pressure relief structure Download PDFInfo
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- CN212718145U CN212718145U CN202021559387.1U CN202021559387U CN212718145U CN 212718145 U CN212718145 U CN 212718145U CN 202021559387 U CN202021559387 U CN 202021559387U CN 212718145 U CN212718145 U CN 212718145U
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- pressure relief
- ball core
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Abstract
The utility model discloses a ball valve with a pressure relief structure, wherein a first side end of a ball core is connected with a limiting mechanism, and a sealing disc is sleeved on the first side end of the ball core in a sliding way and is arranged between the ball core and the limiting mechanism; a plurality of pressure relief holes which penetrate through the sealing disc are formed in the sealing disc; when the ball valve is closed, the ball core is tightly attached to the sealing disc, the sealing disc is hermetically connected with the valve seat, and the sealing disc blocks the pressure relief hole; when the ball valve is used for relieving pressure, the ball core and the sealing disc rotate, the sealing disc slides relative to the ball core, the pressure relief hole is exposed, and a medium flows into the pressure relief hole for pressure relief; the rotating path of the first side end of the ball core is oval, and when the ball valve is closed, the first side end of the ball core is positioned at the long axis end point of the oval rotating path; the utility model discloses when opening the valve, expose the pressure release hole through the cooperation of ball core and sealed dish, the medium flows in pressure release hole release partial pressure, then the ball core edge breaks away from the disk seat, and the medium circulates completely, and consequently little drive ratio's automatically controlled ball valve has the higher area and presses the valve opening ability.
Description
Technical Field
The utility model belongs to the technical field of the ball valve, concretely relates to ball valve with pressure relief structure.
Background
The ball valve with large caliber and high working pressure usually needs great opening power because of bearing large medium acting force. The electric control ball valve has limited output torque, and the valve is opened under pressure under the working conditions of large caliber and high pressure. Electric control ball valve in the existing market is mostly gear drive, adopts the mode that increases the drive ratio to improve to press the open valve ability of pressure usually, but increases the drive ratio and has certain limitation.
The gear ratio of the gear transmission is increased, although the output torque is increased, the valve opening and closing time is increased, and the gear transmission cannot be used in a scene with short valve opening and closing time. The reason is that: the gear train transmission output rotating speed and the input rotating speed are in an inverse proportion relation, namely n output is equal to n input/i (i is the gear train transmission ratio), the output rotating speed obtained by the ball body is reduced by increasing the transmission ratio under the condition that the input rotating speed of the motor is not changed, and therefore the valve opening time is prolonged.
Therefore, it is urgently needed to develop a ball valve with a pressure relief structure to solve the above problems.
SUMMERY OF THE UTILITY MODEL
To solve the problems set forth in the background art described above. The utility model provides a ball valve with pressure relief structure.
In order to achieve the above object, the utility model provides a following technical scheme:
a ball valve with a pressure relief structure, comprising:
a valve body;
a ball core; the ball core is arranged in the valve body;
a valve cover; the valve cover is arranged on the valve body;
a valve stem; the first end of the valve rod is connected with the upper end of the ball core; the second end of the valve rod penetrates through the valve cover;
sealing the disc;
a valve seat; the valve seat is arranged in the valve body;
the first side end of the ball core is connected with a limiting mechanism, and the sealing disc is slidably sleeved on the first side end of the ball core and is arranged between the ball core and the limiting mechanism;
a plurality of pressure relief holes which penetrate through the sealing disc are formed in the sealing disc; when the ball valve is closed, the ball core is tightly attached to the sealing disc, the sealing disc is hermetically connected with the valve seat, and the sealing disc blocks the pressure relief hole; when the ball valve is used for relieving pressure, the ball core and the sealing disc rotate, the sealing disc slides relative to the ball core, the pressure relief hole is exposed, and a medium flows into the pressure relief hole for pressure relief; the rotating path of the first side end of the ball core is oval, and when the ball valve is closed, the first side end of the ball core is located at the long shaft end of the oval rotating path.
Compared with the prior art, the beneficial effects of the utility model are that:
1. when the valve is opened, the ball core and the pressure relief sealing ring slide relatively to each other to expose the pressure relief hole, a medium flows into the pressure relief hole to release partial pressure, then the edge of the ball core is separated from the valve seat, and the medium is completely circulated, so that the electric control ball valve with a small transmission ratio has higher pressure opening capability;
2. this application pressure release function piece is mainly for ball core, sealed dish, pressure release hole, therefore simple structure, assembly efficiency height, with low costs.
Drawings
FIG. 1 is a cross-sectional view of the overall structure of the present application;
FIG. 2 is a schematic structural view of a core of the present application;
FIG. 3 is an enlarged view of a portion a of FIG. 2;
FIG. 4 is a schematic structural view of a seal disk of the present application;
FIG. 5 is a sectional view taken along line A-A of FIG. 4;
FIG. 6 is a schematic view of the overall structure of the present application at the beginning of pressure relief;
fig. 7 is a schematic diagram of the position structure of the ball core and the sealing disc when the pressure relief is started in the application.
In the figure: 1-valve body, 2-fixed shaft, 3-ball core, 31-flange, 4-sealing disk, 41-pressure relief hole, 42-sealing ring installation groove, 5-sealing retainer ring, 6-pressure relief sealing ring, 7-screw I, 8-valve seat, 9-screw II, 10-O-shaped ring I, 11-valve cover, 12-screw III, 13-lower bearing, 14-O-shaped ring II, 15-valve rod, 16-upper bearing, 17-threaded pin and 18-track module.
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 work belong to the protection scope of the present invention.
The utility model provides a following technical scheme:
as shown in fig. 1, 6 and 7, a ball valve with a pressure relief structure includes:
a valve body 1;
a core 3; the ball core 3 is arranged in the valve body 1;
a valve cover 11; the valve cover 11 is arranged on the valve body 1;
a valve stem 15; the first end of the valve rod 15 is connected with the upper end of the ball core 3; a second end of the valve stem 15 is disposed through the bonnet 11;
a sealing disc 4;
a valve seat 8; the valve seat 8 is arranged in the valve body 1;
the first side end of the ball core 3 is connected with a limiting mechanism, and the sealing disc 4 is slidably sleeved on the first side end of the ball core 3 and is arranged between the ball core 3 and the limiting mechanism;
the seal disk 4 is provided with a plurality of pressure relief holes 41 which penetrate through; when the ball valve is closed, the ball core 3 is tightly attached to the sealing disc 4, the sealing disc 4 is hermetically connected with the valve seat 8, and the sealing disc 4 blocks the pressure relief hole 41; when the ball valve is depressurized, the ball core 3 and the sealing disc 4 rotate, the sealing disc 4 slides relative to the ball core 3, the pressure relief hole 41 is exposed, and a medium flows into the pressure relief hole 41 for pressure relief; wherein, the rotation path of the first side end of the ball core 3 is oval, and when the ball valve is closed, the first side end of the ball core 3 is located at the long shaft end of the oval rotation path.
In this embodiment, when opening the valve, the ball core 3 rotates less angle under valve rod 15 and track module 18 effect, drive sealed dish 4 and rotate, the rotation path of the first side of ball core 3 is oval, sealed dish 4 keeps being connected with disk seat 8 under the effect of medium pressure, but the relative sealed dish 4 backshifting certain distance of the first side of ball core 3, ball core 3 and sealed dish 4 produce the clearance and expose pressure release hole 41, the medium flows in through pressure release hole 41, with release partial pressure, then ball core 3 continues to rotate, finally sealed dish 4 breaks away from disk seat 8 completely, the medium circulates completely.
As shown in FIG. 1, as a preferred embodiment, the valve rod 15 is an eccentric valve rod 15, the ball core 3 is a spherical structure, and the valve rod 15 is eccentrically connected with the ball core 3.
As another preferred embodiment, the core 3 has an ellipsoidal structure, and the stem 15 is connected to the center of the core 3.
By adopting the two embodiments, the pressure relief can be realized firstly, and then the control is opened.
As shown in fig. 1 and 2, in some embodiments, the limiting mechanism is a screw i 7, a protruding shaft is formed at the first side end of the ball core 3, the sealing disc 4 is slidably sleeved on the protruding shaft, a screw hole is formed in the end of the protruding shaft, the screw i 7 is in threaded fit with the screw hole, and the head of the screw i 7 is used for clamping the sealing disc 4.
In this embodiment, the two extreme positions of the sealing plate 4 are the first side end of the ball core 3, and the closed pressure relief hole 41, and the nut of the screw i 7.
As shown in fig. 3, 4 and 5, in some embodiments, a flange 31 is provided on the core 3, a seal ring installation groove 42 is provided on the seal plate 4, the pressure relief seal ring 6 is embedded in the seal ring installation groove 42, and when the ball valve is closed, the pressure relief seal ring 6 is pressed tightly and tightly sealed between the core 3 and the seal plate 4 through the flange 31.
As shown in fig. 1, in some embodiments, the ball valve further includes a fixed shaft 2, a screw ii 9, a screw iii 12, a lower bearing 13, an upper bearing 16, a threaded pin 17 and a track module 18, the fixed shaft 2 is fixed on the valve body 1 through threads, the lower end of the ball core 3 is rotatably sleeved on the fixed shaft 2 through an opening arranged on the lower end of the ball core, the upper end of the ball core 3 is connected with the lower end of the valve rod 15 through the threaded pin 17, and the ball core 3 rotates around the central line of the fixed shaft 2 when the valve is opened or closed; the valve cover 11 is connected with the valve body 1 through a plurality of screws II 9, the valve rod 15 is supported on the valve cover 11 through a lower bearing 13 and an upper bearing 16, the track module 18 is sleeved on the valve rod 15, the track module 18 is fixed on the valve cover 11 through a plurality of screws III 12, and the track module 18 is used for controlling the rotating track of the valve rod 15.
In the present embodiment, the track module 18 realizes the non-friction contact between the sealing disk 4 and the valve seat 8 during the valve opening and closing process, and the track module 18 adopts the prior art and is not described in detail herein.
As shown in fig. 1, the ball valve further includes a sealing retainer ring 5, an O-ring i 10, and an O-ring ii 14, the valve seat 8 is pressed on the inner cavity of the valve body 1 by the sealing retainer ring 5, the O-ring i 10 for sealing is installed in the contact gap between the valve cover 11 and the valve body 1, and the O-ring ii 14 for sealing is installed in the contact gap between the valve rod 15 and the valve cover 11.
As shown in fig. 4, a through hole is provided at the center of the seal disk 4, and the protruding shaft is slidably fitted with the seal disk 4 through the through hole; a plurality of relief holes 41 are evenly distributed around the through hole.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A ball valve with a pressure relief structure, comprising:
a valve body;
a ball core; the ball core is arranged in the valve body;
a valve cover; the valve cover is arranged on the valve body;
a valve stem; the first end of the valve rod is connected with the upper end of the ball core; the second end of the valve rod penetrates through the valve cover;
sealing the disc;
a valve seat; the valve seat is arranged in the valve body;
the method is characterized in that:
the first side end of the ball core is connected with a limiting mechanism, and the sealing disc is slidably sleeved on the first side end of the ball core and is arranged between the ball core and the limiting mechanism;
a plurality of pressure relief holes which penetrate through the sealing disc are formed in the sealing disc; when the ball valve is closed, the ball core is tightly attached to the sealing disc, the sealing disc is hermetically connected with the valve seat, and the sealing disc blocks the pressure relief hole; when the ball valve is used for relieving pressure, the ball core and the sealing disc rotate, the sealing disc slides relative to the ball core, the pressure relief hole is exposed, and a medium flows into the pressure relief hole for pressure relief; the rotating path of the first side end of the ball core is oval, and when the ball valve is closed, the first side end of the ball core is located at the long shaft end of the oval rotating path.
2. The ball valve with the pressure relief structure as claimed in claim 1, wherein the valve stem is an eccentric valve stem, the ball core is a spherical structure, and the valve stem is eccentrically connected with the ball core.
3. The ball valve with the pressure relief structure as claimed in claim 1, wherein the core has an ellipsoidal structure, and the stem is connected to the center of the core.
4. A ball valve with a pressure relief structure as claimed in any one of claims 1 to 3, wherein the limiting mechanism is a screw I, a protruding shaft is formed at the first side end of the ball core, the sealing disc is slidably sleeved on the protruding shaft, a screw hole is formed at the end of the protruding shaft, the screw I is in threaded fit with the screw hole, and the head of the screw I is used for clamping the sealing disc.
5. A ball valve with a pressure relief structure according to any one of claims 1-3, wherein a flange is provided on the ball core, a sealing ring mounting groove is provided on the sealing plate, and the pressure relief sealing ring is embedded in the sealing ring mounting groove, so that when the ball valve is closed, the pressure relief sealing ring is pressed against the flange between the ball core and the sealing plate for tight sealing.
6. The ball valve with the pressure relief structure according to any one of claims 1 to 3, further comprising a fixing shaft, a screw II, a screw III, a lower bearing, an upper bearing, a threaded pin and a track module, wherein the fixing shaft is fixed on the valve body by a thread, the lower end of the ball core is rotatably sleeved on the fixing shaft through an opening arranged on the fixing shaft, the upper end of the ball core is connected with the lower end of the valve rod by the threaded pin, and the ball core rotates around the central line of the fixing shaft when the valve is opened or closed; the valve cover is connected with the valve body through a plurality of screws II, the valve rod is supported on the valve cover through a lower bearing and an upper bearing, the track module is sleeved on the valve rod and fixed on the valve cover through a plurality of screws III, and the track module is used for controlling the rotating track of the valve rod.
7. The ball valve with the pressure relief structure as claimed in claim 6, wherein the ball valve further comprises a sealing retainer ring, an O-shaped ring I and an O-shaped ring II, the valve seat is pressed on the inner cavity of the valve body by the sealing retainer ring, the O-shaped ring I for sealing is installed in the contact gap between the valve cover and the valve body, and the O-shaped ring II for sealing is installed in the contact gap between the valve rod and the valve cover.
8. A ball valve with a pressure relief structure according to claim 4, wherein a through hole is provided at the center of the sealing disk, and the protruding shaft is slidably fitted with the sealing disk through the through hole; a plurality of pressure release holes are evenly distributed around the through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021559387.1U CN212718145U (en) | 2020-07-31 | 2020-07-31 | Ball valve with pressure relief structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021559387.1U CN212718145U (en) | 2020-07-31 | 2020-07-31 | Ball valve with pressure relief structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212718145U true CN212718145U (en) | 2021-03-16 |
Family
ID=74911727
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021559387.1U Active CN212718145U (en) | 2020-07-31 | 2020-07-31 | Ball valve with pressure relief structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212718145U (en) |
-
2020
- 2020-07-31 CN CN202021559387.1U patent/CN212718145U/en active Active
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