阅读说明：本技术 一种三通球阀 (Three-way ball valve ) 是由 杨皓然 周伟华 于 2020-04-24 设计创作，主要内容包括：本发明属于阀门技术领域,具体的说是一种三通球阀,包括阀体；阀体内转动连接有阀球,阀体内与阀球滑动连接部位设有阀座；阀球顶部固连有阀杆,阀杆内开设的一号孔中滑动连接有滑柱；阀球内与阀座对应位置开设有二号孔,且二号孔与一号孔连通；二号孔两端密封连接弧形的弹片；一号孔靠近顶端位置设有滑槽,滑柱与滑槽对应位置设有限位环,限位环上方的滑柱上套设有弹簧；阀杆顶部开设有通槽；通槽内设有手柄,手柄中部通过转销与通槽转动连接,且转销偏离阀杆中心；手柄靠近阀杆中心的位置开设有腰圆孔,腰圆孔内滑动连接有圆杆,圆杆与滑柱顶部固连；本发明通过下压手柄减少弹片与阀座的摩擦力,增加球阀的开启效率。(The invention belongs to the technical field of valves, and particularly relates to a three-way ball valve which comprises a valve body; a valve ball is rotationally connected in the valve body, and a valve seat is arranged at the sliding connection part of the valve ball and the valve body; the top of the valve ball is fixedly connected with a valve rod, and a first hole formed in the valve rod is connected with a sliding column in a sliding manner; a second hole is formed in the valve ball at a position corresponding to the valve seat, and the second hole is communicated with the first hole; two ends of the second hole are hermetically connected with the arc-shaped elastic sheet; a sliding groove is formed in the position, close to the top end, of the first hole, a limiting ring is arranged at the position, corresponding to the sliding groove, of the sliding column, and a spring is sleeved on the sliding column above the limiting ring; the top of the valve rod is provided with a through groove; a handle is arranged in the through groove, the middle part of the handle is rotationally connected with the through groove through a rotating pin, and the rotating pin deviates from the center of the valve rod; a waist circular hole is formed in the position, close to the center of the valve rod, of the handle, a round rod is connected in the waist circular hole in a sliding mode, and the round rod is fixedly connected with the top of the sliding column; according to the invention, the friction force between the elastic sheet and the valve seat is reduced by pressing the handle downwards, and the opening efficiency of the ball valve is increased.)

1. A three-way ball valve is characterized in that: comprises a valve body (1); a valve ball (11) is rotatably connected in the valve body (1), and a valve seat (12) is arranged at the sliding connection part of the valve ball (11) in the valve body (1); the top of the valve ball (11) is fixedly connected with a valve rod (13), a first hole (14) formed in the valve rod (13) is connected with a sliding column (15) in a sliding mode, and the sliding column (15) is connected with the first hole (14) in a sliding and sealing mode; a second hole (16) is formed in the valve ball (11) at a position corresponding to the valve seat (12), and the second hole (16) is communicated with the first hole (14); two ends of the second hole (16) are hermetically connected with an arc-shaped elastic sheet (17); a sliding groove (2) is formed in the position, close to the top end, of the first hole (14), a limiting ring (21) is arranged at the position, corresponding to the sliding groove (2), of the sliding column (15), and a spring is sleeved on the sliding column (15) above the limiting ring (21); the top of the valve rod (13) is provided with a through groove (3), and the top of the sliding column (15) extends into the through groove (3); a handle (31) is arranged in the through groove (3), the middle part of the handle (31) is rotatably connected with the through groove (3) through a rotating pin (32), and the rotating pin (32) deviates from the center of the valve rod (13); a waist round hole (33) is formed in the position, close to the center of the valve rod (13), of the handle (31), a round rod (34) is connected in the waist round hole (33) in a sliding mode, and the round rod (34) is fixedly connected with the top of the sliding column (15); the friction force between the elastic sheet (17) and the valve seat (12) is reduced by pressing the handle (31) downwards, and the opening efficiency of the ball valve is improved.

2. The three-way ball valve of claim 1, wherein: valve rod (13) and valve body (1) threaded connection drive valve ball (11) through twist grip (31) and upwards promote, reduce the frictional force of valve ball (11) and bottom disk seat (12), further increase the efficiency of opening of ball valve.

3. The three-way ball valve of claim 2, wherein: lubricating grease is filled in the sliding chute (2), a lubricating hole (22) is formed in one side of the top of the sliding chute (2), and the bottom end of the lubricating hole (22) is communicated with the valve seat (12); the lubricating grease is squeezed when the limiting ring (21) slides, so that the lubrication between the valve seat (12) and the valve ball (11) is increased, and the opening efficiency of the ball valve is further increased.

4. The three-way ball valve according to claim 3, wherein: the limiting ring (21) is connected with the sliding chute (2) in a sliding and sealing manner, and a group of flow limiting holes (23) are uniformly distributed on the circumference of the limiting ring (21); excess lubricating grease overflows through the throttling hole (23), and the lubricating time of the valve ball (11) and the valve seat (12) is prolonged.

5. The three-way ball valve according to claim 4, wherein: a pair of connecting rods (24) is arranged in the flow limiting hole (23), the connecting rods (24) are arranged in a herringbone mode, and one end, close to the inner wall of the flow limiting hole (23), of each connecting rod (24) is hinged to the inner wall of the flow limiting hole (23); 2/3 occupying the sectional area of the flow limiting hole (23) after the two connecting rods (24) are rotated and closed; the resistance of the limiting ring (21) during descending is reduced through the matching of the two connecting rods (24), and the handle (31) is ensured to be reset quickly.

6. The three-way ball valve according to claim 5, wherein: the top of the sliding groove (2) is provided with a filling hole (25) for filling lubricating grease, and the bottom of the filling hole (25) is communicated with the sliding groove (2) through a one-way valve; a sliding rod (26) is arranged in the filling hole (25), and one side of the sliding rod (26) is provided with a group of elastic clamping pieces (27) which incline downwards; the top of the sliding rod (26) is fixedly connected with the sliding column (15) through a bracket; grease is carried by the card (27) to ensure sufficient supply of the lubricating oil in the chute (2).

Technical Field

The invention belongs to the technical field of valves, and particularly relates to a three-way ball valve.

Background

The three-way ball valve is used as a pipeline valve and is mainly suitable for the application conditions of switching, reversing and distributing and converging of gas or liquid media. The gas or liquid medium generally flows in from the axial interface on one side of the ball valve and flows out from the axial interface on the other side and/or the axial interface on the vertical side, and the flowing-out direction can be switched between the axial interface on the other side and the axial interface on the vertical side.

The three-way ball valve has a T shape and an L shape. The T shape can make three orthogonal pipelines mutually communicated and cut off a third channel, thereby playing the roles of shunting and converging. The L-shaped three-way ball valve type can only connect two mutually orthogonal pipelines, cannot simultaneously keep the mutual communication of a third pipeline, and only plays a role in distribution.

Disclosure of Invention

In order to make up for the defects of the prior art and solve the problems that certain pressure needs to be kept between a valve ball and a valve seat and between a valve ball and a sealing piece due to the sealing requirement of the valve in the prior art so as to ensure good sealing of the valve, but the opening and closing of the valve are difficult due to the large friction force between the valve ball and the sealing piece, a large amount of physical power needs to be consumed, and the opening and closing efficiency of the valve is influenced, the three-way ball valve provided by the invention has the advantages that the valve can be opened and closed easily, and.

The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a three-way ball valve, which comprises a valve body; a valve ball is rotationally connected in the valve body, and a valve seat is arranged at the sliding connection part of the valve ball in the valve body; the top of the valve ball is fixedly connected with a valve rod, a first hole formed in the valve rod is connected with a sliding column in a sliding manner, and the sliding column is connected with the first hole in a sliding and sealing manner; a second hole is formed in the valve ball at a position corresponding to the valve seat, and the second hole is communicated with the first hole; two ends of the second hole are hermetically connected with the arc-shaped elastic sheet; a sliding groove is formed in the position, close to the top end, of the first hole, a limiting ring is arranged at the position, corresponding to the sliding groove, of the sliding column, and a spring is sleeved on the sliding column above the limiting ring; a through groove is formed in the top of the valve rod, and the top of the sliding column extends into the through groove; a handle is arranged in the through groove, the middle part of the handle is rotationally connected with the through groove through a rotating pin, and the rotating pin deviates from the center of the valve rod; a waist circular hole is formed in the position, close to the center of the valve rod, of the handle, a circular rod is connected in the waist circular hole in a sliding mode, and the circular rod is fixedly connected with the top of the sliding column; the friction force between the elastic sheet and the valve seat is reduced by pressing the handle downwards, and the opening efficiency of the ball valve is improved; when the ball valve is in operation, the handle is pressed downwards to enable the handle to rotate downwards and then lift the sliding column, so that air pressure at the bottom of the first hole is reduced, air pressure in the second hole is reduced, support of compressed air in the second hole on the elastic sheet is reduced, pressure of the elastic sheet on the valve seat is reduced, friction force of the elastic sheet on the valve seat is reduced, the handle is rotated along the radial direction of the valve rod, the valve rod is rotated through the handle matching through groove to open the ball valve, opening efficiency of the ball valve is improved, and then the handle is reset under the action of the spring and the limiting ring; when the ball valve is closed, the handle is pressed downwards firstly, so that the air pressure in the second hole is reduced, the friction force between the elastic sheet and the valve seat is reduced, after the ball valve rotates in place, the handle is loosened, the sliding column slides downwards along the first hole under the action of the spring and the limiting ring, the air pressure in the first hole and the second hole is increased, the elastic sheet expands outwards and abuts against the valve seat tightly, the sealing performance of the ball valve and the valve seat is improved, and the leakage of the ball valve is reduced.

Preferably, the valve rod is in threaded connection with the valve body, the valve ball is driven to lift upwards by rotating the handle, the friction force between the valve ball and the bottom valve seat is reduced, and the opening efficiency of the ball valve is further improved; because valve rod and valve body threaded connection for when the handle rotated and opened the valve along the valve rod radial direction, the valve rod drove the valve ball rebound, and then reduced the positive pressure between valve ball and the valve body bottom disk seat, reduced frictional force between the two, further reduced the resistance that the valve ball opened, the disk seat extrusion shell fragment of valve ball top simultaneously for the shell fragment warp to No. two downtheholely sunken, and then reduced the frictional force of valve ball upper portion and relevant position disk seat, guaranteed that the ball valve opens smoothly.

Preferably, lubricating grease is filled in the sliding groove, a lubricating hole is formed in one side of the top of the sliding groove, and the bottom end of the lubricating hole is communicated with the valve seat; the lubricating grease is extruded when the limiting ring slides, so that the lubrication between the valve seat and the valve ball is increased, and the opening efficiency of the ball valve is further increased; when pressing down the handle and driving the traveller and upwards sliding in a hole, the traveller drives the spacing ring and upwards slides, and then extrudees the lubricating grease in the spout, make lubricating grease flow to between valve ball and the disk seat along the lubrication hole, and then carry out good lubrication to the valve ball periphery, reduce the frictional force between valve ball and the disk seat, and then further increase the efficiency of opening of ball valve, simultaneously because the lubricating grease viscosity is great, make lubricating grease fill up the clearance between disk seat and the valve ball, further increase the leakproofness of valve ball and disk seat, reduce the leakage of ball valve.

Preferably, the limiting ring is connected with the sliding groove in a sliding and sealing manner, and a group of flow limiting holes are uniformly distributed on the circumference of the limiting ring; redundant lubricating grease overflows through the flow limiting hole, so that the lubricating time of a valve ball and a valve seat is prolonged; through restricted aperture cooperation spacing ring for the spacing ring is at every turn when upwards sliding along with the traveller, extrudees lubricating grease in the spout, makes most lubricating grease flow through the restricted aperture, and little part lubricating grease lubricates the valve ball after the lubrication hole flows out, and then increases the lubricated time of lubricating grease, reduces the pollution of the too much lubricating grease of valve ball department to the fluid that flows in the valve body simultaneously.

Preferably, a pair of connecting rods are arranged in the flow limiting hole, the connecting rods are arranged in a herringbone shape, and one end, close to the inner wall of the flow limiting hole, of each connecting rod is hinged with the inner wall of the flow limiting hole; 2/3 which occupies the sectional area of the flow limiting hole after the two connecting rods are rotated and closed; the resistance of the limiting ring during descending is reduced through the matching of the two connecting rods, and the handle is ensured to be reset quickly; through being equipped with a pair of connecting rod in the restricted flow hole, the connecting rod is the chevron shape and arranges, and the one end that the connecting rod is close to the restricted flow hole inner wall is articulated with the restricted flow hole inner wall, when making the spacing ring upwards slide in the spout, guarantee that partly lubricating grease is crowded into the lubrication hole, carry out good lubrication to the valve ball, when the spacing ring slides down along with the traveller, the connecting rod opens each other after rotating, and then increase the through-flow of restricted flow hole, reduce the resistance that the spacing ring glided, and then make the traveller reset as early as possible under the elasticity of spring, and then make the atmospheric pressure in No. two holes rise fast, increase the sealed efficiency between shell fragment and the disk seat, further reduce the ball valve.

Preferably, the top of the sliding groove is provided with a filling hole for filling lubricating grease, and the bottom of the filling hole is communicated with the sliding groove through a one-way valve; a sliding rod is arranged in the filling hole, and one side of the sliding rod is provided with a group of elastic clamping pieces which incline downwards; the top of the sliding rod is fixedly connected with the sliding column through a bracket; lubricating grease is carried by the card, so that sufficient supply of lubricating oil in the sliding groove is ensured; when the lubricating grease in the sliding groove is insufficient, the lubricating grease is filled into the filling hole through the oil gun, the storage amount of the lubricating grease in the sliding groove is further supplemented, meanwhile, when the valve is opened and closed and the handle is loosened, the sliding column slides downwards under the action of the spring, the sliding column drives the sliding rod to slide downwards through the support, the sliding rod drives the clamping piece to slide downwards and scrape the lubricating grease in the filling hole, the utilization efficiency of the lubricating grease in the filling hole is increased, the deterioration of the lubricating grease caused by the fact that the lubricating grease is exposed in the air is reduced, and the lubricating grease in the sliding groove is sufficiently supplied.

The invention has the following beneficial effects:

1. according to the three-way ball valve, the handle is pressed downwards, the sliding column is lifted after the handle is rotated downwards, so that the air pressure at the bottom of the first hole is reduced, then the air pressure in the second hole is reduced, the support of compressed air in the second hole to the elastic sheet is reduced, the pressure of the elastic sheet to the valve seat is reduced, the friction force of the elastic sheet to the valve seat is reduced, the handle is rotated along the radial direction of the valve rod, the valve rod is rotated through the matching of the handle and the through groove, the ball valve is opened, and the opening efficiency of the ball valve is improved.

2. According to the three-way ball valve, the limiting hole is matched with the limiting ring, so that lubricating grease in the sliding groove is extruded when the limiting ring slides upwards along with the sliding column each time, most of the lubricating grease flows through the limiting hole, and a small part of the lubricating grease flows out of the lubricating hole to lubricate the valve ball, so that the lubricating time of the lubricating grease is prolonged, and the pollution of the excessive lubricating grease at the valve ball to a fluid flowing in the valve body is reduced.

Drawings

The invention will be further explained with reference to the drawings.

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a cross-sectional view of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

FIG. 4 is an enlarged view of a portion of FIG. 2 at B;

FIG. 5 is a cross-sectional view of a stop block of the present invention;

in the figure: the valve comprises a valve body 1, a valve ball 11, a valve seat 12, a valve rod 13, a first hole 14, a sliding column 15, a second hole 16, an elastic sheet 17, a sliding groove 2, a limiting ring 21, a through groove 3, a handle 31, a rotating pin 32, a waist circular hole 33, a round rod 34, a lubricating hole 22, a limiting hole 23, a connecting rod 24, a filling hole 25, a sliding rod 26 and a clamping sheet 27.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1 to 5, the three-way ball valve of the present invention comprises a valve body 1; a valve ball 11 is rotatably connected in the valve body 1, and a valve seat 12 is arranged at the sliding connection part of the valve ball 11 in the valve body 1; the top of the valve ball 11 is fixedly connected with a valve rod 13, a first hole 14 formed in the valve rod 13 is connected with a sliding column 15 in a sliding mode, and the sliding column 15 is connected with the first hole 14 in a sliding and sealing mode; a second hole 16 is formed in the valve ball 11 at a position corresponding to the valve seat 12, and the second hole 16 is communicated with the first hole 14; the two ends of the second hole 16 are hermetically connected with an arc-shaped elastic sheet 17; a sliding groove 2 is formed in the position, close to the top end, of the first hole 14, a limiting ring 21 is arranged at the position, corresponding to the sliding groove 2, of the sliding column 15, and a spring is sleeved on the sliding column 15 above the limiting ring 21; the top of the valve rod 13 is provided with a through groove 3, and the top of the sliding column 15 extends into the through groove 3; a handle 31 is arranged in the through groove 3, the middle part of the handle 31 is rotatably connected with the through groove 3 through a rotating pin 32, and the rotating pin 32 deviates from the center of the valve rod 13; a waist round hole 33 is formed in the handle 31 close to the center of the valve rod 13, a round rod 34 is connected in the waist round hole 33 in a sliding mode, and the round rod 34 is fixedly connected with the top of the sliding column 15; the friction force between the elastic sheet 17 and the valve seat 12 is reduced by pressing the handle 31 downwards, so that the opening efficiency of the ball valve is improved; during operation, the handle 31 is pressed downwards, the handle 31 rotates downwards, then the sliding column 15 is pulled, air pressure at the bottom of the first hole 14 is reduced, air pressure in the second hole 16 is reduced, support of compressed air in the second hole 16 to the elastic sheet 17 is reduced, pressure of the elastic sheet 17 to the valve seat 12 is reduced, friction force of the elastic sheet 17 to the valve seat 12 is reduced, the handle 31 is rotated along the radial direction of the valve rod 13, the valve rod 13 is rotated through the handle 31 in a matched mode with the through groove 3 to open the ball valve, opening efficiency of the ball valve is improved, and then the handle 31 resets under the action of the spring and the limiting ring 21; when the ball valve is closed, the handle 31 is pressed downwards firstly, so that the air pressure in the second hole 16 is reduced, and further the friction force between the elastic sheet 17 and the valve seat 12 is reduced, after the valve ball 11 rotates in place, the handle 31 is loosened, so that the sliding column 15 slides downwards along the first hole 14 under the action of the spring and the limiting ring 21, and further the air pressure in the first hole 14 and the second hole 16 is increased, so that the elastic sheet 17 expands outwards and abuts against the valve seat 12, the sealing performance between the valve ball 11 and the valve seat 12 is increased, and the leakage of the ball valve is reduced.

As an embodiment of the invention, the valve rod 13 is in threaded connection with the valve body 1, and the handle 31 is rotated to drive the valve ball 11 to lift upwards, so that the friction force between the valve ball 11 and the bottom valve seat 12 is reduced, and the opening efficiency of the ball valve is further increased; because valve rod 13 and 1 threaded connection of valve body, when making handle 31 rotate and open the valve along the radial direction of valve rod 13, valve rod 13 drives valve ball 11 and upwards moves, and then reduce the positive pressure between valve ball 11 and the 1 bottom disk seat 12 of valve body, reduce frictional force between the two, further reduce the resistance that valve ball 11 opened, disk seat 12 extrusion shell fragment 17 of valve ball 11 top simultaneously, make shell fragment 17 warp to sunken in No. two holes 16, and then reduce the frictional force of 11 upper portions of valve ball and relevant position disk seat 12, guarantee that the ball valve opens smoothly.

As an embodiment of the invention, the sliding chute 2 is filled with lubricating grease, one side of the top of the sliding chute 2 is provided with a lubricating hole 22, and the bottom end of the lubricating hole 22 is communicated with the valve seat 12; the lubricating grease is extruded when the limiting ring 21 slides, so that the lubrication between the valve seat 12 and the valve ball 11 is increased, and the opening efficiency of the ball valve is further increased; when the handle 31 is pressed down to drive the sliding column 15 to slide upwards in the first hole 14, the sliding column 15 drives the limiting ring 21 to slide upwards, so that lubricating grease in the sliding groove 2 is extruded, the lubricating grease flows to a position between the valve ball 11 and the valve seat 12 along the lubricating hole 22, the periphery of the valve ball 11 is lubricated well, friction force between the valve ball 11 and the valve seat 12 is reduced, opening efficiency of the ball valve is further improved, meanwhile, due to the fact that the viscosity of the lubricating grease is high, a gap between the valve seat 12 and the valve ball 11 is filled with the lubricating grease, sealing performance of the valve ball 11 and the valve seat 12 is further improved, and leakage of the ball valve is reduced.

As an embodiment of the present invention, the limiting ring 21 is connected with the chute 2 in a sliding and sealing manner, and a group of limiting holes 23 are uniformly distributed on the circumference of the limiting ring 21; redundant lubricating grease overflows through the flow limiting hole 23, and the lubricating time of the valve ball 11 and the valve seat 12 is prolonged; through restricted aperture 23 cooperation spacing ring 21 for when spacing ring 21 upwards slided along with traveller 15 at every turn, extrude lubricating grease in the spout 2, make most lubricating grease flow through restricted aperture 23, little part lubricating grease lubricate valve ball 11 after lubricating hole 22 flows out, and then increase the lubricated time of lubricating grease, reduce the pollution of too much lubricating grease of valve ball 11 department to the circulation fluid in the valve body 1 simultaneously.

As an embodiment of the invention, a pair of connecting rods 24 are arranged in the flow-limiting hole 23, the connecting rods 24 are arranged in a herringbone shape, and one end of each connecting rod 24 close to the inner wall of the flow-limiting hole 23 is hinged with the inner wall of the flow-limiting hole 23; 2/3 which occupies the sectional area of the flow-limiting hole 23 after the two connecting rods 24 are rotated and closed; the resistance of the limiting ring 21 during descending is reduced through the matching of the two connecting rods 24, and the handle 31 is ensured to be reset quickly; through being equipped with a pair of connecting rod 24 in the restricted aperture 23, connecting rod 24 is the chevron shape and arranges, and the one end that connecting rod 24 is close to restricted aperture 23 inner wall is articulated with restricted aperture 23 inner wall, when making spacing ring 21 upwards slide in spout 2, guarantee that a part of lubricating grease is crowded into lubrication hole 22, lubricate valve ball 11 well, when spacing ring 21 slides down along with traveller 15, connecting rod 24 opens each other after rotating, and then increase the through-flow of restricted aperture 23, reduce the resistance that spacing ring 21 glides, and then make traveller 15 reset under the elasticity of spring, and then make the atmospheric pressure in No. two holes 16 rise fast, increase the sealed efficiency between shell fragment 17 and the disk seat 12 as soon as possible, further reduce the ball valve and leak.

As an embodiment of the invention, a filling hole 25 for filling lubricating grease is arranged at the top of the sliding chute 2, and the bottom of the filling hole 25 is communicated with the sliding chute 2 through a one-way valve; a sliding rod 26 is arranged in the filling hole 25, and one side of the sliding rod 26 is provided with a group of elastic clamping pieces 27 inclining downwards; the top of the sliding rod 26 is fixedly connected with the sliding column 15 through a bracket; the card 27 carries lubricating grease, so that sufficient supply of lubricating oil in the chute 2 is ensured; when the lubricating grease in the sliding chute 2 is insufficient, the lubricating grease is filled into the filling hole 25 through an oil gun, the storage amount of the lubricating grease in the sliding chute 2 is further supplemented, meanwhile, when the valve opening and closing operation is completed and the handle 31 is loosened, the sliding column 15 slides downwards under the action of the spring, the sliding column 15 drives the sliding rod 26 to slide downwards through the support, the sliding rod 26 drives the clamping piece 27 to slide downwards and scrape the lubricating grease in the filling hole 25, the utilization efficiency of the lubricating grease in the filling hole 25 is increased, the deterioration of the lubricating grease caused by the fact that the lubricating grease is exposed in the air is reduced, and the lubricating grease in the sliding chute 2 is sufficiently supplied.

During operation, the handle 31 is pressed downwards, the handle 31 rotates downwards, then the sliding column 15 is pulled, air pressure at the bottom of the first hole 14 is reduced, air pressure in the second hole 16 is reduced, support of compressed air in the second hole 16 to the elastic sheet 17 is reduced, pressure of the elastic sheet 17 to the valve seat 12 is reduced, friction force of the elastic sheet 17 to the valve seat 12 is reduced, the handle 31 is rotated along the radial direction of the valve rod 13, the valve rod 13 is rotated through the handle 31 in a matched mode with the through groove 3 to open the ball valve, opening efficiency of the ball valve is improved, and then the handle 31 resets under the action of the spring and the limiting ring 21; when the ball valve is closed, the handle 31 is pressed downwards to reduce the air pressure in the second hole 16, so that the friction force between the elastic sheet 17 and the valve seat 12 is reduced, after the valve ball 11 rotates in place, the handle 31 is loosened, the sliding column 15 slides downwards along the first hole 14 under the action of the spring and the limiting ring 21, so that the air pressure in the first hole 14 and the second hole 16 is increased, the elastic sheet 17 expands outwards and abuts against the valve seat 12, the sealing performance between the valve ball 11 and the valve seat 12 is increased, and the leakage of the ball valve is reduced; because the valve rod 13 is in threaded connection with the valve body 1, when the handle 31 rotates along the radial direction of the valve rod 13 and opens the valve, the valve rod 13 drives the valve ball 11 to move upwards, so that the positive pressure between the valve ball 11 and the valve seat 12 at the bottom of the valve body 1 is reduced, the friction force between the valve ball 11 and the valve seat 12 is reduced, the resistance for opening the valve ball 11 is further reduced, meanwhile, the valve seat 12 above the valve ball 11 extrudes the elastic sheet 17, the elastic sheet 17 deforms and then caves in the second hole 16, the friction force between the upper part of the valve ball 11 and the valve seat 12 at the corresponding position is further reduced, and the; when the handle 31 is pressed down to drive the sliding column 15 to slide upwards in the first hole 14, the sliding column 15 drives the limiting ring 21 to slide upwards, so that lubricating grease in the sliding groove 2 is extruded, the lubricating grease flows to a position between the valve ball 11 and the valve seat 12 along the lubricating hole 22, the periphery of the valve ball 11 is lubricated well, friction force between the valve ball 11 and the valve seat 12 is reduced, opening efficiency of the ball valve is further increased, meanwhile, due to the fact that the viscosity of the lubricating grease is high, a gap between the valve seat 12 and the valve ball 11 is filled with the lubricating grease, the sealing performance of the valve ball 11 and the valve seat 12 is further increased, and leakage of the ball valve is reduced; the limiting hole 23 is matched with the limiting ring 21, so that when the limiting ring 21 slides upwards along with the sliding column 15 every time, lubricating grease in the sliding chute 2 is extruded, most of the lubricating grease flows through the limiting hole 23, and a small part of the lubricating grease flows out through the lubricating hole 22 to lubricate the valve ball 11, so that the lubricating time of the lubricating grease is prolonged, and the pollution of the excessive lubricating grease at the valve ball 11 to the circulating fluid in the valve body 1 is reduced; a pair of connecting rods 24 are arranged in the flow limiting hole 23, the connecting rods 24 are arranged in a herringbone shape, one end, close to the inner wall of the flow limiting hole 23, of each connecting rod 24 is hinged to the inner wall of the flow limiting hole 23, so that when the limiting ring 21 slides upwards in the sliding groove 2, a part of lubricating grease is extruded into the lubricating hole 22, the valve ball 11 is lubricated well, when the limiting ring 21 slides downwards along with the sliding column 15, the connecting rods 24 are opened after rotating, the flow rate of the flow limiting hole 23 is increased, the sliding resistance of the limiting ring 21 is reduced, the sliding column 15 is reset under the elastic force of a spring, the air pressure in the second hole 16 is quickly risen, the sealing efficiency between the elastic sheet 17 and the valve seat 12 is increased, and the leakage of the ball valve is further reduced; when the lubricating grease in the sliding chute 2 is insufficient, the lubricating grease is filled into the filling hole 25 through an oil gun, the storage amount of the lubricating grease in the sliding chute 2 is further supplemented, meanwhile, when the valve opening and closing operation is completed and the handle 31 is loosened, the sliding column 15 slides downwards under the action of the spring, the sliding column 15 drives the sliding rod 26 to slide downwards through the support, the sliding rod 26 drives the clamping piece 27 to slide downwards and scrape the lubricating grease in the filling hole 25, the utilization efficiency of the lubricating grease in the filling hole 25 is increased, the deterioration of the lubricating grease caused by the fact that the lubricating grease is exposed in the air is reduced, and the lubricating grease in the sliding chute 2 is sufficiently supplied.

The front, the back, the left, the right, the upper and the lower are all based on figure 1 in the attached drawings of the specification, according to the standard of the observation angle of a person, the side of the device facing an observer is defined as the front, the left side of the observer is defined as the left, and the like.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the scope of the present invention.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.