阅读说明：本技术 一种可以调节流量的低扭矩球阀 (Low-torque ball valve capable of adjusting flow ) 是由 赵国红 许雪杰 杜鑫鑫 于 2020-04-30 设计创作，主要内容包括：本发明公开了一种可以调节流量的低扭矩球阀,包括阀体,所述阀体内设有阀腔,所述阀体的左侧设有与阀腔连通的左通道,所述阀体在阀腔的右端开口处固定安装有右阀盖,所述右阀盖上设有与阀腔连通的右通道,所述阀体内转动连接有的阀杆,所述阀腔内转动连接有球芯；所述球芯的侧面设有第一切面；所述球芯内设有第一轴孔和泄压孔,所述第一轴孔内转动连接有轴杆,所述轴杆的一端设有用于控制泄压孔通断的第一转板；所述球芯内设有第一安装槽,所述第一安装槽的开口处安装有球瓣,所述球瓣上转动连接有转盘；所述阀体内设有动力组件,所述动力组件用于驱动转盘和轴杆转动；该球阀不仅可以实现流量调节,而且开启和关闭时扭矩小。(The invention discloses a low-torque ball valve capable of adjusting flow, which comprises a valve body, wherein a valve cavity is arranged in the valve body, a left passage communicated with the valve cavity is arranged on the left side of the valve body, a right valve cover is fixedly arranged at the right end opening of the valve cavity of the valve body, a right passage communicated with the valve cavity is arranged on the right valve cover, a valve rod is rotationally connected in the valve body, and a ball core is rotationally connected in the valve cavity; a first tangent plane is arranged on the side surface of the ball core; a first shaft hole and a pressure relief hole are formed in the ball core, a shaft lever is rotatably connected in the first shaft hole, and a first rotating plate used for controlling the on-off of the pressure relief hole is arranged at one end of the shaft lever; a first mounting groove is formed in the ball core, a ball flap is mounted at an opening of the first mounting groove, and a rotary disc is rotatably connected to the ball flap; the valve body is internally provided with a power assembly, and the power assembly is used for driving the rotary table and the shaft lever to rotate; the ball valve not only can realize flow regulation, but also has small torque when being opened and closed.)

1. A low-torque ball valve capable of adjusting flow comprises a valve body, wherein a valve cavity is arranged in the valve body, a left passage communicated with the valve cavity is arranged on the left side of the valve body, a right valve cover is fixedly mounted at the opening of the right end of the valve cavity of the valve body, a right passage communicated with the valve cavity is arranged on the right valve cover, a valve rod with the lower end extending into the valve cavity is connected in the valve body in a rotating mode, a ball core fixedly connected with the lower end of the valve rod is connected in the valve cavity in a rotating mode, and the ball core is used for controlling the connection and disconnection of the; the ball is characterized in that a first tangent plane is arranged on the side surface of the ball core; a first shaft hole and a pressure relief hole which are perpendicular to the valve rod are formed in the ball core along the direction perpendicular to the first tangent plane, a shaft rod is rotatably connected in the first shaft hole, one end of the shaft rod extends out of the first tangent plane, and a first rotating plate for controlling the on-off of the pressure relief hole is fixedly arranged; the ball core is internally provided with a first mounting groove along the direction vertical to the valve rod and the shaft rod, a ball valve is fixedly mounted at an opening of the first mounting groove, first through holes are formed in the ball valve and the ball core along the direction vertical to the valve rod and the shaft rod, a rotary disc is rotatably connected to the ball valve in the first mounting groove, the rotary disc is provided with a first through hole, and the size of the overlapping area of the first through hole and the first through hole can be controlled when the rotary disc is rotated; when the ball valve is in an open state, the first through hole is arranged along the axial direction of the left channel, and the pressure relief hole and the left channel are in a vertical position; when the ball valve is in a closed state, the first through hole and the left channel are in a vertical position, and the pressure relief hole is arranged along the axial direction of the left channel; and a power assembly is arranged in the valve body and is used for driving the rotary table and the shaft lever to rotate.

2. The low-torque ball valve capable of adjusting the flow rate of the claim 1, wherein the side surface of the ball core is provided with a second section which is centrosymmetric with the first section, and the other end of the shaft rod extends out of the second section and is fixedly provided with a second rotating plate for controlling the on-off of the pressure relief hole; the first rotating plate and the second rotating plate are both provided with second communicating holes, when the second communicating holes are overlapped with the pressure relief holes, the pressure relief holes are opened, and when the first communicating holes are disconnected with the pressure relief holes, the pressure relief holes are closed.

3. A low torque ball valve capable of regulating flow according to claim 1, wherein said power assembly comprises a rotating shaft, said ball core is provided with a second mounting groove in the lower end of the valve stem, and the lower end of the valve stem is positioned in the second mounting groove; a second shaft hole communicated with the second mounting groove is formed in the valve rod along the axial direction of the valve rod, and the rotating shaft is rotatably connected in the second shaft hole; a cutting groove communicated with the first shaft hole is formed in the side wall of the first mounting groove along the direction perpendicular to the shaft rod, and a first bevel gear positioned in the cutting groove is fixedly mounted on the shaft rod; a bevel gear ring meshed with the first bevel gear is fixedly arranged on the outer side of the circumference of the rotary table; and a second bevel gear meshed with the bevel gear ring is fixedly mounted at the lower end of the rotating shaft in the second mounting groove, and the second bevel gear is positioned between the lower end of the valve rod and the bottom of the second mounting groove.

4. A low torque ball valve capable of regulating flow according to claim 3, wherein the upper end of said rotating shaft is provided with a hexagonal socket.

5. The adjustable flow low torque ball valve as defined in claim 1 wherein the center of said rotatable disk is provided with a protruding shaft perpendicular to the shaft for rotatably engaging the ball segment.

6. A low torque ball valve capable of regulating flow according to claim 1, wherein a handle is fixedly mounted to an upper end of said valve stem.

7. The low torque ball valve capable of adjusting flow rate of claim 1, wherein the valve body has a convex pillar on the side, the valve rod is rotatably connected in the convex pillar, the convex pillar has a rotary groove on the outer side of the valve rod, the side of the valve rod has a convex shoulder radially positioned in the rotary groove, and the opening of the rotary groove is fixedly provided with a limit plug sleeved on the valve rod.

Technical Field

The invention belongs to the technical field of pipeline valves, and particularly relates to a low-torque ball valve capable of adjusting flow.

Background

Ball valves are generally valves that use a ball with a circular passage as the opening and closing element, and the ball performs the opening and closing action with the rotation of the valve body. The opening and closing part of the ball valve is a ball body with a through hole and rotates around an axis vertical to the channel, so that the aim of opening and closing the channel is fulfilled. A conventional ball valve is generally a ball having a through hole formed therein and mounted on a valve seat to be opened and closed by rotation of the ball. The ball valve has the advantages of small fluid resistance, simple structure, tightness, reliability, convenient operation, rapid opening and closing, wide application range and the like, and is widely applied to various departments of petroleum, chemical industry, power generation, paper making, atomic energy, aviation, rockets and the like, and daily life of people. The prior art ball valves have the following problems in use:

(1) in the ball valve used in the high-pressure pipeline, because the pressure of the pipeline is high, the valve clack bears the great pressure during the final forced sealing operation, and the ball valve needs to be opened and closed by strong operation torque, so that the operation difficulty is increased, the transmission mechanism of the ball valve is seriously abraded, and the service life of the forced sealing ball valve is obviously influenced;

(2) the ball valve in the prior art can not realize throttling and flow control, and in order to adjust the flow in the pipeline, a flow adjusting valve is required to be added in the pipeline, so that the configuration cost of the pipeline is increased.

Disclosure of Invention

The invention aims to provide a ball valve which not only can realize flow regulation, but also has small torque when being opened and closed.

In order to achieve the purpose, the invention provides the following technical scheme:

a low-torque ball valve capable of adjusting flow comprises a valve body, wherein a valve cavity is arranged in the valve body, a left passage communicated with the valve cavity is arranged on the left side of the valve body, a right valve cover is fixedly mounted at the opening of the right end of the valve cavity of the valve body, a right passage communicated with the valve cavity is arranged on the right valve cover, a valve rod with the lower end extending into the valve cavity is connected in the valve body in a rotating mode, a ball core fixedly connected with the lower end of the valve rod is connected in the valve cavity in a rotating mode, and the ball core is used for controlling the connection and disconnection of the; a first tangent plane is arranged on the side surface of the ball core; a first shaft hole and a pressure relief hole which are perpendicular to the valve rod are formed in the ball core along the direction perpendicular to the first tangent plane, a shaft rod is rotatably connected in the first shaft hole, one end of the shaft rod extends out of the first tangent plane, and a first rotating plate for controlling the on-off of the pressure relief hole is fixedly arranged; the ball core is internally provided with a first mounting groove along the direction vertical to the valve rod and the shaft rod, a ball valve is fixedly mounted at an opening of the first mounting groove, first through holes are formed in the ball valve and the ball core along the direction vertical to the valve rod and the shaft rod, a rotary disc is rotatably connected to the ball valve in the first mounting groove, the rotary disc is provided with a first through hole, and the size of the overlapping area of the first through hole and the first through hole can be controlled when the rotary disc is rotated; when the ball valve is in an open state, the first through hole is arranged along the axial direction of the left channel, and the pressure relief hole and the left channel are in a vertical position; when the ball valve is in a closed state, the first through hole and the left channel are in a vertical position, and the pressure relief hole is arranged along the axial direction of the left channel; and a power assembly is arranged in the valve body and is used for driving the rotary table and the shaft lever to rotate.

According to the technical scheme, when the ball valve is opened from a closed state, the power assembly is controlled to drive the first rotary plate to rotate to open the pressure relief hole, the left channel is communicated with the right channel in advance, the pressure at the high-pressure end is reduced, the torque when the valve rod is rotated is further reduced, then the valve rod is rotated, the first through holes in the ball clack and the ball core are arranged along the axial direction of the left channel, the ball valve is opened, the flow is adjusted if needed, the rotary plate is driven to rotate by the power assembly, the overlapping area of the first through holes and the first through holes is further controlled, and the flow adjustment of the ball valve is realized; when this ball valve is by opening the closed position, control power component earlier and drive first runner and rotate and open the pressure release hole, make left side passageway and right passageway communicate in advance, reduce the operation moment of torsion when closing, then rotate the valve rod, make first through-hole and left passageway in ball lamella and the ball core be in vertical position, then drive first runner through power component and rotate and close the pressure release hole.

In a further technical scheme, a second tangent plane which is centrosymmetric with the first tangent plane is arranged on the side surface of the ball core, and the other end of the shaft lever extends out of the second tangent plane and is fixedly provided with a second rotating plate for controlling the on-off of the pressure relief hole; the first rotating plate and the second rotating plate are both provided with second communicating holes, when the second communicating holes are overlapped with the pressure relief holes, the pressure relief holes are opened, and when the first communicating holes are disconnected with the pressure relief holes, the pressure relief holes are closed.

In a further technical scheme, the power assembly comprises a rotating shaft, a second mounting groove is formed in the lower end of the valve rod in the ball core, and the lower end of the valve rod is located in the second mounting groove; a second shaft hole communicated with the second mounting groove is formed in the valve rod along the axial direction of the valve rod, and the rotating shaft is rotatably connected in the second shaft hole; a cutting groove communicated with the first shaft hole is formed in the side wall of the first mounting groove along the direction perpendicular to the shaft rod, and a first bevel gear positioned in the cutting groove is fixedly mounted on the shaft rod; a bevel gear ring meshed with the first bevel gear is fixedly arranged on the outer side of the circumference of the rotary table; and a second bevel gear meshed with the bevel gear ring is fixedly mounted at the lower end of the rotating shaft in the second mounting groove, and the second bevel gear is positioned between the lower end of the valve rod and the bottom of the second mounting groove.

In a further technical scheme, an inner hexagonal hole is formed in the upper end of the rotating shaft.

In a further technical scheme, a convex shaft which is rotatably connected in the ball valve is arranged at the center of the turntable along the direction vertical to the shaft lever.

In a further technical scheme, a handle is fixedly installed at the upper end of the valve rod.

In a further technical scheme, a convex column is arranged on the side face of the valve body, the valve rod is rotatably connected in the convex column, a rotary groove is formed in the outer side of the valve rod by the convex column, a convex shoulder located in the rotary groove is radially arranged on the side face of the valve rod, and a limiting plug sleeved on the valve rod is fixedly mounted at an opening of the rotary groove.

Advantageous effects

Compared with the prior art, the technical scheme of the invention has the following advantages:

(1) the ball valve is provided with the first rotating plate and the second rotating plate, when the ball valve is opened and closed, the first rotating plate and the second rotating plate are rotated to open the pressure relief hole, so that the left channel and the right channel are communicated in advance, and then the valve rod is rotated to drive the ball core to rotate, so that the operation torque of the ball valve can be reduced, and the adjustment is convenient;

(2) the invention is provided with the rotary table, and the size of the overlapping area of the first through hole and the first communication hole can be controlled by controlling the rotation angle of the rotary table, so that the flow is controlled, and the function of flow regulation is realized.

Drawings

FIG. 1 is a cross-sectional view of the present invention with the core in an open position;

FIG. 2 is a sectional view taken along line A-A of FIG. 1;

FIG. 3 is a cross-sectional view of the present invention with the core in the closed position and the pressure relief vent in the open position;

FIG. 4 is a cross-sectional view taken along line B-B of FIG. 3;

FIG. 5 is a three-dimensional schematic view of a portion of the transmission structure of the present invention;

FIG. 6 is a schematic three-dimensional structure of a core according to the present invention;

fig. 7 is a schematic three-dimensional structure of the turntable according to the present invention.

Detailed Description

Referring to fig. 1-7, a low torque ball valve capable of adjusting flow rate includes a valve body 2, a valve cavity 21 is disposed in the valve body 2, a left passage 21a communicated with the valve cavity 21 is disposed on the left side of the valve body 2, a right valve cover 22 is fixedly mounted on the valve body 2 at a right opening of the valve cavity 21, a right passage 22a communicated with the valve cavity 21 is disposed on the right valve cover 22, a valve rod 5 whose lower end extends into the valve cavity 21 is rotatably connected to the valve body 2, and a handle 58 is fixedly mounted at the upper end of the valve rod 5. The valve cavity 21 is rotatably connected with a ball core 1 fixedly connected with the lower end of the valve rod 5, and the ball core 1 is used for controlling the on-off of a left channel 21a and a right channel 22 a; the side surface of the ball core 1 is provided with a first tangent plane 1 a; a first shaft hole 1c and a pressure relief hole 1d which are perpendicular to the valve rod 5 are formed in the ball core 1 along the direction perpendicular to the first tangent plane 1a, a shaft rod 9 is rotatably connected in the first shaft hole 1c, one end of the shaft rod 9 extends out of the first tangent plane 1a, and a first rotating plate 11a used for controlling the on-off of the pressure relief hole 1d is fixedly arranged; be equipped with first mounting groove 1e along perpendicular to valve rod 5 and axostylus axostyle 9 direction in the ball core 1, the opening part fixed mounting of first mounting groove 1e has ball lamella 8, be equipped with first through-hole 81 along perpendicular to valve rod 5 and axostylus axostyle 9 direction in ball lamella 8 and the ball core 1, rotate on ball lamella 8 in first mounting groove 1e and be connected with carousel 7, the central point of carousel 7 puts and is equipped with the protruding axle 72 of rotation connection in ball lamella 8 along perpendicular to axostylus axostyle 9 direction.

The turntable 7 is provided with a first communication hole 71, and when the turntable 7 is rotated, the size of the overlapping area of the first communication hole 71 and the first through hole 81 can be controlled; when the ball valve is in an open state, the first through hole 81 is arranged along the axial direction of the left channel 21a, and the pressure relief hole 1d is vertical to the left channel 21 a; when the ball valve is in a closed state, the first through hole 81 and the left channel 21a are in a vertical position, and the pressure relief hole 1d is arranged along the axial direction of the left channel 21 a; and a power assembly is arranged in the valve body 2 and is used for driving the rotary table 7 and the shaft rod 9 to rotate.

A second tangent plane 1b which is centrosymmetric with the first tangent plane 1a is arranged on the side surface of the ball core 1, and a second rotating plate 11b for controlling the on-off of the pressure relief hole 1d is fixedly arranged at the other end of the shaft lever 9 and extends out of the second tangent plane 1 b; the first rotating plate 11a and the second rotating plate 11b are both provided with second communicating holes 11, when the second communicating holes 11 are overlapped with the pressure relief holes 1d, the pressure relief holes 1d are opened, and when the first communicating holes 71 are disconnected from the pressure relief holes 1d, the pressure relief holes 1d are closed.

The power assembly comprises a rotating shaft 4, a second mounting groove 1f is formed in the lower end of the valve rod 5 in the ball core 1, and the lower end of the valve rod 5 is located in the second mounting groove 1 f; a second shaft hole 51 communicated with the second mounting groove 1f is formed in the valve rod 5 along the axial direction of the valve rod, the rotating shaft 4 is rotatably connected into the second shaft hole 51, and a hexagon socket hole 41 is formed in the upper end of the rotating shaft 4; a cutting groove 1g communicated with the first shaft hole 1c is formed in the side wall of the first mounting groove 1e along the direction vertical to the shaft rod 9, and a first bevel gear 10 positioned in the cutting groove 1g is fixedly mounted on the shaft rod 9; a bevel gear ring 6 meshed with a first bevel gear 10 is fixedly arranged on the outer side of the circumference of the rotary table 7; and a second bevel gear 3 meshed with the bevel gear ring 6 is fixedly arranged at the lower end of the rotating shaft 4 in the second mounting groove 1f, and the second bevel gear 3 is positioned between the lower end of the valve rod 5 and the bottom of the second mounting groove 1 f.

The side of the valve body 2 is provided with a convex column 23, the valve rod 5 is rotatably connected in the convex column 23, the convex column 23 is provided with a rotary groove 231 on the outer side of the valve rod 5, the side of the valve rod 5 is provided with a convex shoulder 54 positioned in the rotary groove 231 along the radial direction, and an opening of the rotary groove 231 is fixedly provided with a limit plug 24 sleeved on the valve rod 5.

When the ball valve is opened from a closed state, firstly, the rotating shaft 4 is rotated, the rotating shaft 4 drives the second bevel gear 3 to rotate, the second bevel gear 3 drives the first bevel gear 10 to rotate through the bevel gear ring 6, the first bevel gear 10 drives the shaft lever 9 to rotate when rotating, the shaft lever 9 drives the first rotating plate 11a and the second rotating plate 11b to rotate when rotating, the second communicating hole 11 is communicated with the pressure relief hole 1d, the left channel 21a and the right channel 22a are communicated in advance, and the pressure at the high-pressure end is reduced; then, the handle 58 rotates the valve rod 5 to drive the ball core 1 to rotate, so that the first through hole 81 is arranged along the axial direction of the left channel 21a, and the left channel 21a is communicated with the right channel 22 a; in addition, when the flow of the ball valve needs to be adjusted, the rotating shaft 4 drives the rotating disc 7 to rotate through the meshing of the second bevel gear 3 and the bevel gear ring 6, and when the rotating disc 7 rotates, the size of the overlapping area of the first through hole 81 and the first through hole 71 is changed, so that the flow of the ball valve is changed.

When the ball valve is opened to a closed position, firstly, a rotating shaft 4 is rotated, the rotating shaft 4 drives a second bevel gear 3 to rotate, the second bevel gear 3 drives a first bevel gear 10 to rotate through a bevel gear ring 6, the first bevel gear 10 drives a shaft lever 9 to rotate when rotating, the shaft lever 9 drives a first rotating plate 11a and a second rotating plate 11b to rotate when rotating, a second communicating hole 11 is communicated with a pressure relief hole 1d, a left channel 21a and a right channel 22a are communicated in advance, then a valve rod 5 is rotated through a handle 58 to drive a ball core 1 to rotate, the shaft lever 9 is in a coaxial position with the left channel 21a and the right channel 22a, finally, the rotating shaft 4 is rotated reversely, the rotating shaft 4 drives the second bevel gear 3 to rotate reversely, the second bevel gear 3 drives the first bevel gear 10 to rotate reversely through the bevel gear ring 6, the shaft lever 9 is driven to rotate reversely when the first bevel gear 10 rotates reversely, the shaft lever 9 drives the, the second communication hole 11 is disconnected from the relief hole 1d, thereby completing the closing of the ball valve.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.