阅读说明：本技术 一种半球阀 (Semi-ball valve ) 是由 陈功强 孙章忠 杨星星 于 2021-11-01 设计创作，主要内容包括：本发明涉及一种半球阀,包括阀体、阀瓣体、手柄、油囊、转轴机构、摆臂机构、位置控制机构和翻转控制机构；所述阀体内设有阀腔,所述阀体左侧设有与阀腔连通的出口B；所述阀体右侧还设有与阀腔连通的进口A；所述进口A内设有阀座；所述阀体上方沿纵向设有与阀腔连通的第一通道,所述阀体下方沿纵向设有与阀腔连通的第二通道；所述第一通道右侧设有与阀腔连通的第三通道；所述转轴机构设置在第一通道和第二通道内；所述手柄设置在阀体上方；所述手柄上设有油囊槽；所述摆臂机构转动设置在阀腔内；所述阀瓣体转动设置在摆臂机构之间；所述位置控制机构设置在第三通道内；所述油囊设置在油囊槽内；所述翻转控制机构设置在阀腔内。(The invention relates to a hemisphere valve, which comprises a valve body, a valve flap body, a handle, an oil bag, a rotating shaft mechanism, a swing arm mechanism, a position control mechanism and a turnover control mechanism, wherein the valve flap body is arranged on the valve body; a valve cavity is arranged in the valve body, and an outlet B communicated with the valve cavity is arranged at the left side of the valve body; the right side of the valve body is also provided with an inlet A communicated with the valve cavity; a valve seat is arranged in the inlet A; a first passage communicated with the valve cavity is longitudinally arranged above the valve body, and a second passage communicated with the valve cavity is longitudinally arranged below the valve body; a third channel communicated with the valve cavity is arranged on the right side of the first channel; the rotating shaft mechanism is arranged in the first channel and the second channel; the handle is arranged above the valve body; the handle is provided with an oil sac groove; the swing arm mechanism is rotatably arranged in the valve cavity; the valve flap body is rotatably arranged between the swing arm mechanisms; the position control mechanism is arranged in the third channel; the oil bag is arranged in the oil bag groove; the turnover control mechanism is arranged in the valve cavity.)

1. A hemisphere valve, its characterized in that: the semi-ball valve comprises a valve body (1), a valve flap body (2), a handle (3), an oil bag (4), a rotating shaft mechanism, a swing arm mechanism, a position control mechanism and a turnover control mechanism;

a valve cavity (11) is arranged in the valve body (1), and an outlet B communicated with the valve cavity (11) is arranged at the left side of the valve body (1); the right side of the valve body (1) is also provided with an inlet A communicated with the valve cavity (11); a valve seat (14) is arranged in the inlet A; a first passage communicated with the valve cavity (11) is longitudinally arranged above the valve body (1), a second passage communicated with the valve cavity (11) is longitudinally arranged below the valve body (1), and the first passage and the second passage are communicated with a shaft; an annular communicating groove (13) is formed in the first channel; a third channel communicated with the valve cavity (11) is arranged on the right side of the first channel; the valve body (1) is also provided with a first flow passage (12) for communicating the third channel with the communication groove (13);

the rotating shaft mechanism is arranged in the first channel and the second channel;

the handle (3) is arranged above the valve body (1) and is used for driving the rotating shaft mechanism to rotate; an oil sac groove is formed in the handle (3);

the swing arm mechanism is rotationally arranged in the valve cavity (11); the valve flap body (2) is rotatably arranged between the swing arm mechanisms; the valve seat (14) is used for matching with the valve seat to control the on-off of the inlet A and the outlet B;

the position control mechanism is arranged in the third channel and used for controlling whether the valve clack body (2) is attached to the valve seat (14) or not;

the oil bag (4) is arranged in the oil bag groove and used for controlling the position control mechanism to work;

the turnover control mechanism is arranged in the valve cavity (11) and used for controlling the valve clack body (2) to turn over.

2. The hemispherical valve according to claim 1, wherein: the rotating shaft mechanism comprises a shaft rod (51) and a fixed shaft (52);

the shaft lever (51) is rotatably arranged in the first passage, one end of the shaft lever (51) penetrates through the first passage and extends into the valve cavity (11), the other end of the shaft lever is provided with a through hole (511), and a pore passage (512) for communicating the communicating groove (13) with the through hole (511) is arranged in the shaft lever (51);

one end of the fixed shaft (52) is fixedly arranged in the second passage, and the other end of the fixed shaft extends into the valve cavity (11).

3. The hemispherical valve according to claim 2, wherein: the swing arm mechanism comprises a driving arm (61), a driven arm (62), a driving sliding arm (63), a driven sliding arm (64), a first spring (65) and a second spring (66);

one end of the driving arm (61) is fixedly connected with one end, extending into the valve cavity (11), of the shaft lever (51), the other end of the driving arm is provided with a control surface (611), a first inclined surface (612) is arranged on the control surface (611), and a first spring cavity is further arranged in the driving arm (61);

one end of the main sliding arm (63) is arranged in the first spring cavity in a sliding mode, and the other end of the main sliding arm is provided with a fourth channel along the radial direction; a first boss is arranged at one end, located in the first spring cavity, of the main sliding arm (63); a first shoulder (631) is arranged on the right side of the first boss; a second inclined surface (632) is arranged on the first shoulder (631);

one end of the driven arm (62) is rotatably connected with one end of the fixed shaft (52) extending into the valve cavity (11), and the other end of the driven arm is provided with a second spring cavity;

one end of the slave sliding arm (64) is arranged in the second spring cavity in a sliding mode, and the other end of the slave sliding arm is provided with a fifth channel along the radial direction; a second boss is arranged at one end of the slave sliding arm (64) in the second spring cavity;

one end of the first spring (65) abuts against the active arm (61), and the other end of the first spring abuts against the first boss, so that the main sliding arm (63) keeps the trend of moving towards the active arm (61);

one end of the second spring (66) abuts against the driven arm (62) and the other end abuts against the second boss, so that the secondary slide arm (64) keeps the trend of moving towards the driven arm (62).

4. The hemispherical valve according to claim 3, wherein: the valve flap body (2) comprises a first valve flap (21), a second valve flap (22) and a middle shaft (23);

the first valve clack (21) and the second valve clack (22) are symmetrically arranged on two sides of a center shaft (23); the first valve clack (21) and the second valve clack (22) are both fixedly connected with a middle shaft (23); one end of the middle shaft (23) is rotatably arranged in the fourth channel, and the other end of the middle shaft is rotatably arranged in the fifth channel.

5. The hemispherical valve according to claim 1, wherein: the oil bag (4) is provided with an oil outlet; the hydraulic oil in the oil bag (4) can be extruded out from the oil outlet by extruding the oil bag (4).

6. The hemispherical valve according to claim 5, wherein: one end of the handle (3) is fixedly connected with the shaft lever (51); and a second flow passage (31) for communicating the through-flow hole (511) with the oil outlet is arranged in the handle (3).

7. The hemispherical valve according to claim 6, wherein: the position control mechanism comprises a control pin (7) and a third spring (8);

the control pin (7) is arranged in the third channel in a sliding manner, one end of the control pin (7) positioned in the valve cavity (11) is provided with a trapezoidal table (72), and the other end is provided with a piston (71); a control cavity (73) is formed below the piston (71) and is matched with the valve body (1), and the control cavity (73) is communicated with the first flow passage (12); a spring hole is formed above the piston (71); the trapezoid table (72) is provided with a first sharp corner (721) and a second sharp corner (722); a first sliding surface (723) is arranged on the first sharp corner (721), and a second sliding surface (724) is arranged on the second sharp corner (722);

one end of the third spring (8) is abutted in the third channel, and the other end of the third spring is abutted in the spring hole, so that the control pin (7) keeps a downward movement trend.

8. The hemispherical valve according to claim 7, wherein: when the hemispherical valve needs to be closed, firstly, the handle (3) is rotated to drive the shaft lever (51) to rotate, the shaft lever (1) drives the valve flap body (2) to rotate towards the valve seat (14) by taking the shaft lever (51) as an axis through the swing arm mechanism, and at the moment, the control surface (611) is tightly attached to the first shoulder (631) under the action of the first spring (65); the second sharp corner (722) is inserted between the first inclined surface (612) and the second inclined surface (632), and pushes the main slide arm (63) and the auxiliary slide arm (64) to move outwards against the first spring (65) and the second spring (66) under the action of the second sliding surface (724); the valve clack body (2) is driven to approach the valve seat (14), when the driving arm (61) rotates to be parallel to a connecting line of the inlet A and the outlet B, the first valve clack (21) moves to a position tightly attached to the valve seat (14), and the hemispherical valve is closed;

when the hemispherical valve needs to be opened, firstly, the oil bag (4) is squeezed to enable oil to enter the control cavity (73) through the oil outlet, the second flow passage (31), the through hole (511), the pore passage (512), the communicating groove (13) and the first flow passage (12), the control pin (7) is pushed to overcome the third spring (8) to move upwards, and the trapezoid table (72) is driven to withdraw from between the control surface (611) and the first shoulder (631); under the action of a first spring (65) and a second spring (66), a main sliding arm (63) and a secondary sliding arm (64) are pushed to move towards a driving arm (61) and a driven arm (62) respectively, and the first valve clack (21) is driven to separate from a valve seat (14); the valve flap body (2) is driven to rotate towards the direction far away from the valve seat (14) by the rotating handle (3); when the handle (3) moves to be vertical to the connecting line of the inlet A and the outlet B, the opening of the hemisphere valve is completed.

9. The hemispherical valve according to claim 8, wherein: the turnover control mechanism comprises a grooved wheel (92) and a toggle plate (91);

the grooved pulley (92) is fixedly connected to the lower end of the middle shaft (23); four arc-shaped grooves (922) are uniformly distributed in the grooved wheel (92) along the circumferential direction, and four shifting grooves (921) are radially arranged on the grooved wheel (92); a toggle groove (921) is arranged between every two adjacent arc-shaped grooves (922);

the poking disc (91) is fixedly connected to the upper end of the fixed shaft; the poking disc (91) is connected with a first poking pin (911) and a second poking pin (912), and a rotation-stopping convex arc (915) is arranged on the circumference of the poking disc (91); a first abdicating groove (913) and a second abdicating groove (914) are formed in the periphery of the poking disc (91); the first shifting pin (911) is over against the first abdicating groove (913) and is arranged on a perpendicular bisector between two end points of the first abdicating groove (913); the second shifting pin (912) is over against the second yielding groove (914) and is arranged on a perpendicular bisector between two end points of the second yielding groove (914).

10. The hemispherical valve according to claim 9, wherein: when the semi-ball valve works for a long time and the first valve clack (21) needs to be replaced, firstly, the oil bag (4) is pressed, the position control mechanism is controlled to enable the main sliding arm (63) and the auxiliary sliding arm (64) to drive the valve clack body (21) to move leftwards, the first valve clack (21) is separated from the valve seat (14), and the grooved wheel (92) is driven to move leftwards, so that the arc-shaped groove (922) is attached to the rotation stopping convex arc (915); so that the valve clack body (21) cannot rotate relative to the main sliding arm (61); the valve clack body (2) is driven by the rotary handle (3) to rotate around the shaft rod (51), when the grooved wheel (92) rotates until the first toggle pin (911) enters the toggle groove (921), the grooved wheel (92) continues to move, and under the action of the first toggle pin (911), the grooved wheel (92) is toggled to drive the middle shaft (23) to rotate for 90 degrees; when the grooved wheel (92) rotates until the second toggle pin (912) enters the toggle groove (921), the grooved wheel (92) continues to move, and under the action of the second toggle pin (912), the grooved wheel (92) is toggled to drive the middle shaft (23) to rotate for 90 degrees again; after two times of shifting, the central shaft (23) rotates 180 degrees together to drive the first valve clack (21) and the second valve clack (22) which are arranged on the central shaft (23) to rotate 180 degrees around the central shaft (23), and then the second valve clack (22) is rotated to a working position; the handle (3) is continuously rotated after the oil bag (4) is loosened, the control pin (7) extends under the action of a third spring (8), the first sharp corner (721) is inserted between the first inclined surface (612) and the second inclined surface (632), and the main slide arm (63) and the auxiliary slide arm (64) are pushed to move outwards against the first spring (65) and the second spring (66) under the action of a first sliding surface (723); and then drive valve clack body (2) and be close to disk seat (14), work as handle (3) are rotatory 360 degrees, and second valve clack (22) and disk seat (14) laminating are accomplished and are changed.

Technical Field

The invention belongs to the technical field of pipeline valves, and particularly relates to a hemispherical valve.

Background

The hemisphere valve is a new kind of fast opening and closing valves, it controls the valve core to rotate around the valve body central line to realize the opening, closing of the valve through the rotating handle, the hemisphere valve switch is light, small, can make very large-bore, seal reliably, simple in construction, get the extensive application in every trade, it is a new kind of valves that is adopted extensively in recent years; when a half ball valve is used, due to the structural characteristics of the half ball valve, the following problems often occur:

1. when the hemispherical valve is closed, the valve clack of the hemispherical valve is tightly attached to the valve seat, so that the valve clack can generate large friction with the valve seat when rotating, the valve clack can be greatly abraded after long-time work, the hemispherical valve can leak, and the service life of the hemispherical valve is influenced;

2. if the valve clack of the hemispherical valve leaks and needs to be replaced, the working circuit needs to be stopped, the hemispherical valve is disassembled for maintenance, the workload is huge, the working progress of the working circuit is influenced, and media in pipelines at two sides can flow out to cause pollution.

The present invention is designed to solve the above problems.

Disclosure of Invention

In order to solve the problems, the invention provides a half ball valve.

In order to achieve the purpose, the invention provides the following technical scheme that the hydraulic control valve comprises a valve body, a valve clack body, a handle, an oil bag, a rotating shaft mechanism, a swing arm mechanism, a position control mechanism and a turnover control mechanism; a valve cavity is arranged in the valve body, and an outlet B communicated with the valve cavity is arranged at the left side of the valve body; the right side of the valve body is also provided with an inlet A communicated with the valve cavity; a valve seat is arranged in the inlet A; a first passage communicated with the valve cavity is longitudinally arranged above the valve body, a second passage communicated with the valve cavity is longitudinally arranged below the valve body, and the first passage and the second passage are communicated with a shaft; an annular communicating groove is formed in the first channel; a third channel communicated with the valve cavity is arranged on the right side of the first channel; the valve body is also provided with a first flow passage for communicating the third channel with the communicating groove;

the rotating shaft mechanism is arranged in the first channel and the second channel; the handle is arranged above the valve body and is used for driving the rotating shaft mechanism to rotate; the handle is provided with an oil sac groove; the swing arm mechanism is rotatably arranged in the valve cavity; the valve flap body is rotatably arranged between the swing arm mechanisms; the valve seat is used for matching with the valve seat to control the on-off of the inlet A and the outlet B; the position control mechanism is arranged in the third channel and used for controlling whether the valve clack body is attached to the valve seat or not; the oil bag is arranged in the oil bag groove and used for controlling the position control mechanism to work; the turnover control mechanism is arranged in the valve cavity and used for controlling the valve clack body to turn over.

Preferably, the rotating shaft mechanism comprises a shaft rod and a fixed shaft; the shaft lever is rotatably arranged in the first channel, one end of the shaft lever penetrates through the first channel and extends into the valve cavity, the other end of the shaft lever is provided with a through hole, and a pore passage used for communicating the communicating groove and the through hole is arranged in the shaft lever; one end of the fixed shaft is fixedly arranged in the second channel, and the other end of the fixed shaft extends into the valve cavity;

preferably, the swing arm mechanism comprises a driving arm, a driven arm, a driving sliding arm, a driven sliding arm, a first spring and a second spring; one end of the driving arm is fixedly connected with one end of the shaft lever, which extends into the valve cavity, the other end of the driving arm is provided with a control surface, the control surface is provided with a first inclined surface, and a first spring cavity is also arranged in the driving arm; one end of the main sliding arm is arranged in the first spring cavity in a sliding mode, and the other end of the main sliding arm is provided with a fourth channel along the radial direction; a first boss is arranged at one end of the main sliding arm, which is positioned in the first spring cavity; a first shoulder is arranged on the right side of the first boss; a second inclined plane is arranged on the first shoulder;

one end of the driven arm is rotatably connected with one end of the fixed shaft extending into the valve cavity, and the other end of the driven arm is provided with a second spring cavity; one end of the slave sliding arm is arranged in the second spring cavity in a sliding mode, and the other end of the slave sliding arm is provided with a fifth channel along the radial direction; a second boss is arranged at one end of the slave sliding arm, which is positioned in the second spring cavity;

one end of the first spring is abutted against the driving arm, and the other end of the first spring is abutted against the first boss, so that the main sliding arm keeps the trend of moving towards the driving arm; one end of the second spring is abutted against the driven arm, and the other end of the second spring is abutted against the second boss, so that the driven arm is kept moving towards the driven arm.

Preferably, the valve flap body comprises a first valve flap, a second valve flap and a central shaft; the first valve clack and the second valve clack are symmetrically arranged on two sides of the middle shaft; the first valve clack and the second valve clack are both fixedly connected with the middle shaft; one end of the middle shaft is rotatably arranged in the fourth channel, and the other end of the middle shaft is rotatably arranged in the fifth channel.

Preferably, the oil bag is provided with an oil outlet; the hydraulic oil in the oil bag can be extruded out of the oil outlet by pressing the oil bag.

Preferably, one end of the handle is fixedly connected with the shaft rod; and a second flow passage used for communicating the through flow hole with the oil outlet is arranged in the handle.

Preferably, the position control mechanism includes a control pin and a third spring; the control pin is arranged in the third channel in a sliding manner, one end of the control pin, which is positioned in the valve cavity, is provided with a trapezoidal table, and the other end of the control pin is provided with a piston; a control cavity is formed below the piston and matched with the valve body, and the control cavity is communicated with the first flow passage; a spring hole is formed above the piston; the trapezoidal table is provided with a first sharp corner and a second sharp corner; a first sliding surface is arranged on the first sharp corner, and a second sliding surface is arranged on the second sharp corner; one end of the third spring is abutted in the third channel, and the other end of the third spring is abutted in the spring hole, so that the control pin keeps a downward movement trend.

Preferably, when the hemispherical valve needs to be closed, firstly, the handle is rotated to drive the shaft rod to rotate, the shaft rod drives the valve clack body to rotate towards the direction of the valve seat by taking the shaft rod as an axis through the swing arm mechanism, and at the moment, the control surface is tightly attached to the first shoulder under the action of the first spring; the second sharp corner is inserted between the first inclined surface and the second inclined surface, and the main sliding arm and the auxiliary sliding arm are pushed to move outwards by overcoming the first spring and the second spring under the action of the second sliding surface; when the driving arm rotates to be parallel to a connecting line of the inlet A and the outlet B, the first valve clack moves to a position tightly attached to the valve seat, and the hemispherical valve is closed;

when the hemispherical valve needs to be opened, firstly, the oil bag is extruded to enable oil to enter the control cavity through the oil outlet, the second flow passage, the through flow hole, the pore passage, the communicating groove and the first flow passage, and the control pin is pushed to overcome the third spring to move upwards to drive the trapezoidal platform to withdraw from between the control surface and the first shoulder; under the action of a first spring and a second spring, a main sliding arm and a slave sliding arm are pushed to respectively move towards the main sliding arm and the slave sliding arm, and the first valve clack is driven to separate from the valve seat; the valve body is driven to rotate in the direction far away from the valve seat by rotating the handle; when the handle moves to be vertical to the connecting line of the inlet A and the outlet B, the opening of the hemisphere valve is completed.

Preferably, the turnover control mechanism comprises a grooved wheel and a toggle plate; the grooved pulley is fixedly connected to the lower end of the middle shaft; the grooved pulley is uniformly provided with four arc-shaped grooves along the circumferential direction, and four shifting grooves are arranged on the grooved pulley along the radial direction; a toggle groove is arranged between every two adjacent arc-shaped grooves;

the poking disc is fixedly connected to the upper end of the fixed shaft; the poking disc is connected with a first poking pin and a second poking pin, and a rotation-stopping convex arc is arranged on the circumference of the poking disc; a first abdicating groove and a second abdicating groove are formed in the periphery of the poking disc; the first shifting pin is over against the first abdicating groove and is arranged on a perpendicular bisector between two end points of the first abdicating groove; the second shifting pin is over against the second abdicating groove and is arranged on a perpendicular bisector between two end points of the second abdicating groove.

Preferably, when the hemispherical valve works for a long time and the first valve flap needs to be replaced, firstly, the oil bag is pressed, the position control mechanism is controlled to enable the main sliding arm and the auxiliary sliding arm to drive the valve flap body to move leftwards, the first valve flap is separated from the valve seat and drives the grooved wheel to move leftwards, and the arc-shaped groove is attached to the rotation stopping convex arc; so that the valve clack body cannot rotate relative to the main sliding arm; the valve clack body is driven to rotate around the shaft rod by rotating the handle, when the grooved wheel rotates until the first toggle pin enters the toggle groove, the grooved wheel continues to move, and under the action of the first toggle pin, the grooved wheel is toggled to drive the central shaft to rotate for 90 degrees; when the grooved pulley rotates until the second toggle pin enters the toggle groove, the grooved pulley continues to move, and under the action of the second toggle pin, the grooved pulley is toggled to drive the central shaft to rotate for 90 degrees again; after two times of stirring, the central shaft rotates 180 degrees together to drive the first valve flap and the second valve flap which are arranged on the central shaft to rotate 180 degrees around the central shaft, and then the second valve flap is rotated to a working position; the handle is continuously rotated by loosening the oil bag, the pin is controlled to extend under the action of a third spring, the first sharp corner is inserted between the first inclined surface and the second inclined surface, and the main sliding arm and the auxiliary sliding arm are pushed to move outwards by overcoming the first spring and the second spring under the action of the first sliding surface; and then drive the valve clack body and be close to the disk seat, work as when handle rotation degree 360, the laminating of second valve clack and disk seat is accomplished the change.

Compared with the prior art, the invention has the advantages that:

1. by using the telescopic swing arm mechanism and the controlled position control mechanism, the control pin is controlled to contract before the hemispherical valve is opened, the swing arm mechanism drives the valve flap body to be separated from the valve seat, and then the valve flap body is rotated to open the hemispherical valve, so that the friction between the first valve flap and the valve seat can be reduced, and the service life of the hemispherical valve is prolonged;

2. through the use of the oil bag, the oil bag is pressed before the hemispherical valve is opened so as to control the control pin to contract, and the control device is simple, convenient and easy to control;

3. by arranging the second valve clack, the second valve clack is replaced after the first valve clack is abraded, the hemispherical valve can be maintained without being detached, the maintenance is convenient, the environment is not polluted, and the service life of the hemispherical valve is prolonged;

4. through the cooperation of sheave and dial, make when opening the hemisphere valve at ordinary times, the valve clack body is rotatory 90 degrees around the axostylus axostyle, arc recess on the sheave is laminated with the convex arc of stalling, make the valve clack body can not rotate, do not influence the normal use of first valve clack, and when first valve clack wearing and tearing need change the second valve clack, the handle drives the valve clack body and rotates 360 degrees around the axis bar, in the interim, because the sheave in proper order with first stirring round pin and the cooperation of second stirring round pin, make it around axis rotation 180 degrees, drive first valve clack and second valve clack rotation 180 degrees, it is rotatory to the work position with the second valve clack, accomplish the replacement of first valve clack, only need not more operations of twist grip, and easy operation, and easy grasp.

Drawings

FIG. 1 is a cross-sectional view of a half ball valve of the present invention in a closed state;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1 in accordance with the present invention;

FIG. 3 is a cross-sectional view taken along line B-B of FIG. 1 in accordance with the present invention;

FIG. 4 is an enlarged view taken at I of FIG. 1 in accordance with the present invention;

FIG. 5 is a three-dimensional view of the master arm, master slide arm and control pin of the present invention in their mated configuration;

fig. 6 is a three-dimensional view of the inventive thumb wheel.

Detailed Description

The invention is described in further detail below with reference to the accompanying examples.

As shown in fig. 1-6, a hemisphere valve comprises a valve body 1, a valve clack body 2, a handle 3, an oil bag 4, a rotating shaft mechanism, a swing arm mechanism, a position control mechanism and a turnover control mechanism;

a valve cavity 11 is arranged in the valve body 1, and an outlet B communicated with the valve cavity 11 is arranged at the left side of the valve body 1; the right side of the valve body 1 is also provided with an inlet A communicated with the valve cavity 11; a valve seat 14 is arranged in the inlet A; a first passage communicated with the valve cavity 11 is longitudinally arranged above the valve body 1, and a second passage communicated with the valve cavity 11, a first passage and a second passage through shaft are longitudinally arranged below the valve body 1; the first channel is provided with an annular communicating groove 13; a third channel communicated with the valve cavity 11 is arranged on the right side of the first channel; the valve body 1 is also provided with a first flow passage 12 for communicating the third passage with the communication groove 13;

the rotating shaft mechanism is arranged in the first channel and the second channel; the handle 3 is arranged above the valve body 1 and is used for driving the rotating shaft mechanism to rotate; the handle 3 is provided with an oil sac groove; the swing arm mechanism is rotationally arranged in the valve cavity 11; the valve clack body 2 is rotatably arranged between the swing arm mechanisms; the valve seat 14 is used for matching with the valve seat to control the on-off of the inlet A and the outlet B; the position control mechanism is arranged in the third channel and used for controlling whether the valve clack body 2 is attached to the valve seat 14 or not; the oil bag 4 is arranged in the oil bag groove and used for controlling the position control mechanism to work; the turnover control mechanism is arranged in the valve cavity 11 and used for controlling the valve clack body 2 to turn over.

Preferably, the spindle mechanism includes a shaft 51 and a fixed shaft 52; the shaft lever 51 is rotatably arranged in the first passage, one end of the shaft lever 51 passes through the first passage and extends into the valve cavity 11, the other end of the shaft lever is provided with a through hole 511, and a pore passage 512 for communicating the communicating groove 13 with the through hole 511 is arranged in the shaft lever 51; the fixed shaft 52 has one end fixedly disposed in the second passage and the other end extending into the valve chamber 11.

Preferably, the swing arm mechanism includes a master arm 61, a slave arm 62, a master slide arm 63, a slave slide arm 64, a first spring 65, and a second spring 66; one end of the driving arm 61 is fixedly connected with one end of the shaft rod 51 extending into the valve cavity 11, the other end is provided with a control surface 611, the control surface 611 is provided with a first inclined surface 612, and a first spring cavity is further arranged in the driving arm 61; one end of the main sliding arm 63 is slidably arranged in the first spring cavity, and the other end is provided with a fourth channel along the radial direction; a first boss is arranged at one end of the main sliding arm 63, which is positioned in the first spring cavity; a first shoulder 631 is arranged at the right side of the first boss; the first shoulder 631 is provided with a second inclined surface 632;

one end of the driven arm 62 is rotatably connected with one end of the fixed shaft 52 extending into the valve cavity 11, and the other end is provided with a second spring cavity; one end of the slave sliding arm 64 is arranged in the second spring cavity in a sliding mode, and the other end of the slave sliding arm is provided with a fifth channel along the radial direction; a second boss is arranged at one end of the slave sliding arm 64 in the second spring cavity;

one end of the first spring 65 abuts against the active arm 61, and the other end abuts against the first boss, so that the main sliding arm 63 keeps the trend of moving towards the active arm 61; a second spring 66 bears on one end against the follower arm 62 and on the other end against a second boss, maintaining the tendency of the follower arm 62 to move from the slider arm 64.

Preferably, the valve body 2 comprises a first valve flap 21, a second valve flap 22 and a central shaft 23; the first valve clack 21 and the second valve clack 22 are symmetrically arranged on two sides of a middle shaft 23; the first valve clack 21 and the second valve clack 22 are both fixedly connected with a middle shaft 23; one end of the middle shaft 23 is rotatably arranged in the fourth channel, and the other end is rotatably arranged in the fifth channel.

Preferably, the oil bag 4 is provided with an oil outlet; the hydraulic oil in the oil bag 4 can be squeezed out from the oil outlet by pressing the oil bag 4. Hemisphere valve according to claim 5, characterized in that: one end of the handle 3 is fixedly connected with the shaft lever 51; the handle 3 is internally provided with a second flow passage 31 for communicating the through-flow hole 511 with the oil outlet.

Preferably, the position control mechanism comprises a control pin 7 and a third spring 8; the control pin 7 is arranged in the third channel in a sliding manner, one end of the control pin 7, which is positioned in the valve cavity 11, is provided with a trapezoidal table 72, and the other end is provided with a piston 71; a control cavity 73 is formed below the piston 71 and is matched with the valve body 1, and the control cavity 73 is communicated with the first flow passage 12; a spring hole is arranged above the piston 71; the trapezoidal shaped platform 72 is provided with a first sharp corner 721 and a second sharp corner 722; a first sliding surface 723 is arranged on the first sharp corner 721, and a second sliding surface 724 is arranged on the second sharp corner 722; one end of the third spring 8 is abutted in the third channel, and the other end of the third spring is abutted in the spring hole, so that the control pin 7 keeps a downward movement trend.

Preferably, when the hemispherical valve needs to be closed, firstly, the handle 3 is rotated to drive the shaft lever 51 to rotate, the shaft lever 1 drives the valve flap body 2 to rotate towards the valve seat 14 by using the shaft lever 51 as an axis through the swing arm mechanism, and at this time, the control surface 611 is tightly attached to the first shoulder 631 under the action of the first spring 65; the second pointed corner 722 is inserted between the first inclined surface 612 and the second inclined surface 632, and pushes the main slide arm 63 and the auxiliary slide arm 64 to move outwards against the first spring 65 and the second spring 66 under the action of the second sliding surface 724; the valve clack body 2 is driven to approach the valve seat 14, when the driving arm 61 rotates to be parallel to a connecting line of the inlet A and the outlet B, the first valve clack 21 moves to a position tightly attached to the valve seat 14, and the hemispherical valve is closed;

when the hemispherical valve needs to be opened, firstly, the oil bag 4 is squeezed to enable oil to enter the control cavity 73 through the oil outlet, the second flow passage 31, the through hole 511, the hole 512, the communicating groove 13 and the first flow passage 12, the control pin 7 is pushed to overcome the third spring 8 to move upwards, and the trapezoidal table 72 is driven to exit from between the control surface 611 and the first shoulder 631; under the action of the first spring 65 and the second spring 66, the main slide arm 63 and the auxiliary slide arm 64 are pushed to move towards the driving arm 61 and the driven arm 62 respectively, and the first valve clack 21 is driven to separate from the valve seat 14; the valve clack body 2 is driven to rotate towards the direction far away from the valve seat 14 by the rotating handle 3; when the handle 3 moves to be vertical to the connecting line of the inlet A and the outlet B, the opening of the hemisphere valve is completed.

Preferably, the turnover control mechanism comprises a grooved wheel 92 and a toggle plate 91; the grooved pulley 92 is fixedly connected with the lower end of the middle shaft 23; the grooved pulley 92 is uniformly provided with four arc-shaped grooves 922 along the circumferential direction, and the grooved pulley 92 is radially provided with four toggle grooves 921; a toggle groove 921 is arranged between two adjacent arc-shaped grooves 922;

the poking disc 91 is fixedly connected to the upper end of the fixed shaft; the poking disc 91 is connected with a first poking pin 911 and a second poking pin 912, and the circumference of the poking disc 91 is provided with a rotation-stopping convex arc 915; a first abdicating groove 913 and a second abdicating groove 914 are formed on the periphery of the poking disc 91; the first moving pin 911 faces the first avoiding groove 913 and is disposed on a perpendicular bisector between two end points of the first avoiding groove 913; the second moving pin 912 faces the second avoiding groove 914 and is disposed on a perpendicular bisector between two end points of the second avoiding groove 914.

Preferably, when the hemispherical valve works for a long time and the first valve flap 21 needs to be replaced, firstly, the oil bag 4 is pressed, the position control mechanism is controlled to enable the main sliding arm 63 and the auxiliary sliding arm 64 to drive the valve flap body 21 to move leftwards, the first valve flap 21 is separated from the valve seat 14, and the grooved wheel 92 is driven to move leftwards, so that the arc-shaped groove 922 is attached to the rotation stopping convex arc 915; so that the valve flap body 21 cannot rotate relative to the main slide arm 61; the rotary handle 3 drives the valve flap body 2 to rotate around the shaft rod 51, when the grooved pulley 92 rotates until the first toggle pin 911 enters the toggle groove 921, the grooved pulley 92 continues to move, and due to the action of the first toggle pin 911, the toggle grooved pulley 92 drives the central shaft 23 to rotate by 90 degrees; when the grooved pulley 92 rotates until the second toggle pin 912 enters the toggle groove 921, the grooved pulley 92 continues to move, and under the action of the second toggle pin 912, the grooved pulley 92 is toggled to drive the middle shaft 23 to rotate for 90 degrees again; after two times of shifting, the central shaft 23 rotates 180 degrees together, and drives the first valve clack 21 and the second valve clack 22 which are arranged on the central shaft 23 to rotate 180 degrees around the central shaft 23, so that the second valve clack 22 is rotated to a working position; the handle 3 is rotated continuously by loosening the oil bag 4, the control pin 7 extends under the action of the third spring 8, the first sharp corner 721 is inserted between the first inclined surface 612 and the second inclined surface 632, and the main sliding arm 63 and the auxiliary sliding arm 64 are pushed to move outwards by overcoming the first spring 65 and the second spring 66 under the action of the first sliding surface 723; and then drive valve clack body 2 and be close to valve seat 14, when handle 3 rotated 360 degrees, second valve clack 22 and valve seat 14 laminating, accomplished the change.

The working principle and the process of the invention are as follows:

as shown in fig. 1, when the hemispherical valve needs to be used, the hemispherical valve needs to be connected to a pipeline first, and when the hemispherical valve is normally opened from the closed state, the oil bag 4 needs to be pressed first, so that the hydraulic oil outlet, the second flow passage 31, the through-flow hole 511, the hole passage 512, the communicating groove 13, and the first flow passage 12 inside the oil bag enter the control chamber 73, the control pin 7 is pushed to move upward against the third spring 8, and the trapezoidal table 72 is driven to exit from between the control surface 611 and the first shoulder 631; under the action of the first spring 65 and the second spring 66, the main slide arm 63 and the auxiliary slide arm 64 are respectively pushed to the left, so that the first valve clack 21 is separated from the valve seat 14, and the grooved wheel 92 is driven to move to the left; the arc-shaped groove 922 is attached to the rotation stopping convex arc 915, so that the valve clack body 2 cannot rotate, the rotating handle 3 drives the driving arm 61 and the driven arm 62 to rotate for 90 degrees, the poking disc 91 is fixedly connected with the fixed shaft 52, the fixed shaft 52 is fixedly connected with the valve body 1, the driven arm 62 drives the grooved wheel 92 to rotate around the fixed shaft 52, the first valve clack 21 also rotates for 90 degrees around the shaft rod 51, the valve port is completely opened, and the hemispherical valve is opened.

When the semi-spherical valve is normally closed from an open state, the oil bag 4 is loosened, the control pin 7 extends under the action of the third spring 8, the handle 3 is rotated, when the second sharp corner 722 is inserted between the first inclined surface 612 and the second inclined surface 632, the handle 3 continues to rotate, and under the action of the second sliding surface 724, the main sliding arm 63 and the auxiliary sliding arm 64 are pushed to move outwards against the first spring 65 and the second spring 66; and then the valve clack body 2 is driven to approach the valve seat 14, when the handle 3 rotates 90 degrees to the initial position, the first valve clack 21 is attached to the valve seat 14, the valve port is closed, and the half ball valve is closed (as shown in fig. 1).

When the hemispherical valve works for a long time and the first valve clack 21 is worn and leaks, firstly, the oil bag 4 is pressed, the position control mechanism is controlled to enable the main sliding arm 63 and the auxiliary sliding arm 64 to drive the valve clack body 21 to move leftwards, the first valve clack 21 is separated from the valve seat 14, and the grooved wheel 92 is driven to move leftwards, so that the arc-shaped groove 922 is attached to the rotation stopping convex arc 915; so that the valve flap body 21 cannot rotate relative to the main slide arm 61; the rotary handle 3 drives the valve flap body 2 to rotate around the shaft rod 51, when the grooved pulley 92 rotates until the first toggle pin 911 enters the toggle groove 921, the grooved pulley 92 continues to move, and due to the action of the first toggle pin 911, the toggle grooved pulley 92 drives the central shaft 23 to rotate by 90 degrees; when the grooved pulley 92 rotates until the second toggle pin 912 enters the toggle groove 921, the grooved pulley 92 continues to move, and under the action of the second toggle pin 912, the grooved pulley 92 is toggled to drive the middle shaft 23 to rotate for 90 degrees again; after two times of shifting, the central shaft 23 rotates 180 degrees together, and drives the first valve clack 21 and the second valve clack 22 which are arranged on the central shaft 23 to rotate 180 degrees around the central shaft 23, so that the second valve clack 22 is rotated to a working position; the handle 3 is rotated continuously by loosening the oil bag 4, the control pin 7 extends under the action of the third spring 8, the first sharp corner 721 is inserted between the first inclined surface 612 and the second inclined surface 632, and the main sliding arm 63 and the auxiliary sliding arm 64 are pushed to move outwards by overcoming the first spring 65 and the second spring 66 under the action of the first sliding surface 723; and then drive valve clack body 2 and be close to valve seat 14, when handle 3 rotated 360 degrees, second valve clack 22 and valve seat 14 laminating, accomplished the change.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.