阅读说明：本技术 一种高压金属密封球阀 (High-pressure metal sealing ball valve ) 是由 武芳 其他发明人请求不公开姓名 于 2020-04-30 设计创作，主要内容包括：本发明公开了一种高压金属密封球阀,包括阀体,所述阀体内设有通道和安装孔,所述阀体在安装孔的上端开口处安装有上端盖；所述安装孔内转动连接有球芯；所述阀体的上端和上端盖之间形成安装腔,所述上端盖内转动连接有套杆,所述套杆的下端沿径向设有传动盘；所述球芯的上端沿套杆的轴向设有伸入套杆内的阀杆；所述阀体内在通道的左端设有左螺套,所述左螺套内滑动连接有左阀座筒；所述阀体内设有左限位槽,所述传动盘上铰接有左连杆,所述左连杆的另一端固定安装有穿过左限位槽伸入通道内的左凸杆,所述左阀座筒的外侧面沿径向设有左凸肩,所述左螺套和左凸肩之间设有左一弹簧；该高压金属密封球阀在开启和关闭过程中无磨损。(The invention discloses a high-pressure metal sealing ball valve which comprises a valve body, wherein a channel and a mounting hole are arranged in the valve body, and an upper end cover is arranged at an opening at the upper end of the mounting hole of the valve body; the ball core is rotatably connected in the mounting hole; an installation cavity is formed between the upper end of the valve body and the upper end cover, a sleeve rod is rotatably connected in the upper end cover, and a transmission disc is arranged at the lower end of the sleeve rod along the radial direction; the upper end of the ball core is provided with a valve rod extending into the loop bar along the axial direction of the loop bar; a left threaded sleeve is arranged at the left end of the channel in the valve body, and a left valve seat cylinder is connected in the left threaded sleeve in a sliding manner; a left limiting groove is formed in the valve body, a left connecting rod is hinged to the transmission disc, a left convex rod penetrating through the left limiting groove and extending into the channel is fixedly mounted at the other end of the left connecting rod, a left convex shoulder is arranged on the outer side surface of the left valve seat barrel along the radial direction, and a left spring is arranged between the left threaded sleeve and the left convex shoulder; the high-pressure metal sealing ball valve has no abrasion in the opening and closing processes.)

1. A high-pressure metal sealing ball valve comprises a valve body, wherein a channel which penetrates through the valve body from left to right is arranged in the valve body, a mounting hole is formed in the valve body along the direction perpendicular to the channel, and an upper end cover is arranged at an opening at the upper end of the mounting hole; the device is characterized in that a ball core for controlling the on-off of a channel is rotatably connected in the mounting hole; an installation cavity is formed between the upper end of the valve body and the upper end cover, a first shaft hole with the lower end communicated with the installation cavity is formed in the upper end cover along the vertical direction, a loop bar with the lower end positioned in the installation cavity is rotatably connected in the first shaft hole, a transmission disc is arranged at the lower end of the loop bar along the radial direction, and the transmission disc is positioned in the installation cavity; the upper end of the ball core is provided with a valve rod extending into the loop bar along the axial direction of the loop bar; a left threaded sleeve is arranged at the left end of the channel in the valve body, and a left valve seat cylinder is connected in the left threaded sleeve in a sliding manner along the axial direction of the channel; a left limiting groove communicated with the channel and the mounting cavity is formed in the valve body along the axial direction of the left valve seat cylinder, a left connecting rod is hinged to the transmission disc, a left convex rod penetrating through the left limiting groove and extending into the channel is fixedly mounted at the other end of the left connecting rod, a left convex shoulder is arranged on the outer side surface of the left valve seat cylinder along the radial direction, and a left spring used for forcing the left convex shoulder to be tightly pressed on the left convex rod is arranged between the left threaded sleeve and the left convex shoulder;

the side wall of the first shaft hole is provided with a positioning groove along the radial direction, a positioning ball and a positioning spring are arranged in the positioning groove and used for forcing the positioning ball to be pressed on the sleeve rod, the outer side face of the sleeve rod is provided with a first positioning hole and a second positioning hole, when the positioning ball is located in the first positioning hole, the right end of the left valve seat cylinder is pressed on the ball core, and when the positioning ball is located in the second positioning hole, the right end of the left valve seat cylinder leaves the ball core.

2. The high-pressure metal-sealed ball valve according to claim 1, wherein a right threaded sleeve is arranged at the right end of the channel in the valve body, and a right valve seat cylinder is connected in the right threaded sleeve in a sliding manner along the axial direction of the channel; a right limiting groove communicated with the channel and the mounting cavity is formed in the valve body along the axial direction of the right valve seat cylinder, a right connecting rod is hinged to the transmission disc, the other end of the right connecting rod is fixedly provided with a right convex rod penetrating through the right limiting groove and extending into the channel, a right convex shoulder is arranged on the outer side surface of the left valve seat cylinder along the radial direction, and a right spring used for forcing the right convex shoulder to tightly press the right convex shoulder is arranged between the right threaded sleeve and the right convex shoulder; when the positioning ball is positioned in the first positioning hole, the left end of the right valve seat cylinder is tightly pressed on the ball core, and when the positioning ball is positioned in the second positioning hole, the left end of the right valve seat cylinder leaves the ball core.

3. The high-pressure metal-sealed ball valve according to claim 1, wherein a first handle is fixedly mounted at an upper end of the loop bar, and a second handle is fixedly mounted at an upper end of the valve stem extending out of the loop bar.

4. The high-pressure metal-sealed ball valve according to claim 1, wherein a communication hole is provided in the core in a direction perpendicular to the stem, the communication hole being in a coaxial position with the passage when the core opens the passage, and the communication hole being in a perpendicular position with the passage when the core closes the passage.

5. The high-pressure metal-sealed ball valve according to claim 4, wherein the lower end of the ball core is provided with a protruding shaft extending from the bottom of the mounting hole, the lower end of the protruding shaft is provided with a threaded hole, a sliding groove communicated with the communicating hole is formed in the protruding shaft and the ball core along the axial direction of the protruding shaft, an adjusting plate is slidably connected in the sliding groove and used for controlling the flow area of the communicating hole, a plug is fixedly mounted at the threaded hole, an adjusting rod is rotatably connected in the plug, the upper end of the adjusting rod is in threaded connection with the adjusting rod, and the adjusting rod is rotated to drive the adjusting plate to slide in the sliding groove.

6. The high-pressure metal-sealed ball valve according to claim 5, wherein the plug is provided with a rotary groove in the outside of the adjusting rod, the outside of the adjusting rod is provided with a shoulder in the rotary groove in the radial direction, and the opening at the lower end of the rotary groove is provided with a threaded sleeve for preventing the shoulder from being separated from the rotary groove.

Technical Field

The invention belongs to the technical field of pipeline valves, and particularly relates to a high-pressure metal sealing ball valve.

Background

At present, ball valves are widely applied to industries such as petroleum, chemical industry, electric power, metallurgy, papermaking and the like. Traditional ball valve generally adopts soft sealing, because receives the restriction of sealing material, its application temperature range is little, and high temperature resistant, high pressure and corrosion resistance are low, and life is shorter, to needing to adopt high parameter, the special operating mode condition of high performance ball valve as the piece that opens and shuts, if: the occasions such as ore pulp, ash slag, dust and the like can not be met, so that a hard sealing ball valve is adopted. The existing hard sealing ball valve generally comprises a valve body, a valve cover, a valve ball, a valve seat and a valve rod, wherein the valve ball at the lower end of the valve rod is driven to rotate by rotating the valve rod when in use, so that a through hole on the valve ball corresponds to or is staggered with a flow passage of the valve, and the opening or closing of the ball valve is realized. Because the valve ball produces the friction with the disk seat in the rotation process, wearing and tearing are serious, easily cause the leakage, have reduced the operational reliability of ball valve, have shortened the life of ball valve. Although wear-free hard sealing ball valves are also available at present, the wear-free hard sealing ball valves are complex in structure, difficult to process, high in production cost and inconvenient to use and maintain.

In addition, the ball valve in the prior art cannot realize throttling and flow control, and in order to adjust the flow in the pipeline, a flow adjusting valve needs 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 high-pressure metal sealing ball valve which is free from abrasion in the opening and closing processes and can adjust the flow.

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

a high-pressure metal sealing ball valve comprises a valve body, wherein a channel which penetrates through the valve body from left to right is arranged in the valve body, a mounting hole is formed in the valve body along the direction perpendicular to the channel, and an upper end cover is arranged at an opening at the upper end of the mounting hole; the mounting hole is internally and rotatably connected with a ball core for controlling the on-off of the channel; an installation cavity is formed between the upper end of the valve body and the upper end cover, a first shaft hole with the lower end communicated with the installation cavity is formed in the upper end cover along the vertical direction, a loop bar with the lower end positioned in the installation cavity is rotatably connected in the first shaft hole, a transmission disc is arranged at the lower end of the loop bar along the radial direction, and the transmission disc is positioned in the installation cavity; the upper end of the ball core is provided with a valve rod extending into the loop bar along the axial direction of the loop bar; a left threaded sleeve is arranged at the left end of the channel in the valve body, and a left valve seat cylinder is connected in the left threaded sleeve in a sliding manner along the axial direction of the channel; a left limiting groove communicated with the channel and the mounting cavity is formed in the valve body along the axial direction of the left valve seat cylinder, a left connecting rod is hinged to the transmission disc, a left convex rod penetrating through the left limiting groove and extending into the channel is fixedly mounted at the other end of the left connecting rod, a left convex shoulder is arranged on the outer side surface of the left valve seat cylinder along the radial direction, and a left spring used for forcing the left convex shoulder to be tightly pressed on the left convex rod is arranged between the left threaded sleeve and the left convex shoulder;

the side wall of the first shaft hole is provided with a positioning groove along the radial direction, a positioning ball and a positioning spring are arranged in the positioning groove and used for forcing the positioning ball to be pressed on the sleeve rod, the outer side face of the sleeve rod is provided with a first positioning hole and a second positioning hole, when the positioning ball is located in the first positioning hole, the right end of the left valve seat cylinder is pressed on the ball core, and when the positioning ball is located in the second positioning hole, the right end of the left valve seat cylinder leaves the ball core.

Through the technical scheme, the high-pressure metal sealing ball valve is opened from a closed state, or is closed from an open state, the loop bar is controlled to drive the rotary disc to rotate, so that the positioning ball is separated from the first positioning hole and enters the second positioning hole, the left convex rod is pushed by the left connecting rod to drive the left valve seat cylinder to move leftwards to compress the left spring when the rotary disc rotates, the right end of the left valve seat cylinder leaves the ball core, then the valve rod is rotated to drive the ball core to rotate for 90 degrees to open or close the channel, then the loop bar is rotated reversely to enable the positioning ball to be separated from the second positioning hole and enter the first positioning hole, the loop bar drives the rotary disc to rotate when rotating, the rotary disc pulls the left convex rod through the left connecting rod to drive the left valve seat cylinder to move rightwards, the left spring is reset, the right end of the left valve seat cylinder is tightly pressed on the ball core.

In a further technical scheme, a right threaded sleeve is arranged at the right end of a channel in the valve body, and a right valve seat cylinder is connected in the right threaded sleeve in a sliding manner along the axial direction of the channel; a right limiting groove communicated with the channel and the mounting cavity is formed in the valve body along the axial direction of the right valve seat cylinder, a right connecting rod is hinged to the transmission disc, the other end of the right connecting rod is fixedly provided with a right convex rod penetrating through the right limiting groove and extending into the channel, a right convex shoulder is arranged on the outer side surface of the left valve seat cylinder along the radial direction, and a right spring used for forcing the right convex shoulder to tightly press the right convex shoulder is arranged between the right threaded sleeve and the right convex shoulder; when the positioning ball is positioned in the first positioning hole, the left end of the right valve seat cylinder is tightly pressed on the ball core, and when the positioning ball is positioned in the second positioning hole, the left end of the right valve seat cylinder leaves the ball core.

In a further technical scheme, a first handle is fixedly mounted at the upper end of the loop bar, and a second handle is fixedly mounted at the upper end of the valve rod, extending out of the loop bar.

In a further technical scheme, a communication hole is formed in the ball core along the position perpendicular to the valve rod, when the ball core opens the channel, the communication hole and the channel are in the coaxial position, and when the ball core closes the channel, the communication hole and the channel are in the perpendicular position.

Among the further technical scheme, the lower extreme of ball core is equipped with the protruding axle that stretches out from the bottom of mounting hole, the lower extreme of protruding axle is equipped with the screw hole, the axial along protruding axle in protruding axle and the ball core is equipped with the spout with the intercommunicating pore intercommunication, sliding connection has the regulating plate in the spout, the regulating plate is used for controlling intercommunicating pore flow area's size, screwed hole department fixed mounting has the plug, the plug internal rotation is connected with the regulation pole, the upper end of adjusting the pole with adjust pole threaded connection, rotate and adjust the pole and drive the regulating plate and slide in the spout.

In a further technical scheme, a rotary groove is formed in the outer side of the adjusting rod in the plug, a convex shoulder located in the rotary groove is radially arranged on the outer side of the adjusting rod, and a threaded sleeve used for preventing the convex shoulder from being separated from the rotary groove is arranged at an opening at the lower end of the rotary groove.

Advantageous effects

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

(1) when the ball valve is opened or closed, the left valve seat cylinder and the right valve seat cylinder retract firstly, so that the ball core is not in contact friction with the left valve seat cylinder and the right valve seat, the friction force can be reduced, the abrasion is reduced, and the service life is prolonged.

(2) The invention is provided with the adjusting plate, and the size of the flow area of the communicating hole can be controlled by controlling the up-and-down movement of the adjusting plate, so that the flow is controlled, and the function of flow adjustment is realized.

Drawings

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

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

FIG. 3 is a cross-sectional view taken along line B-B of FIG. 1;

FIG. 4 is a cross-sectional view taken along line C-C of FIG. 1;

FIGS. 5-8 are cross-sectional views of the valve seat of the present invention in a retracted state;

fig. 9-12 are cross-sectional views of the present invention in an open state.

Detailed Description

Referring to fig. 1 to 12, a high-pressure metal seal ball valve includes a valve body 12, a left-right through passage 121 is provided in the valve body 12, a mounting hole 122 is provided in the valve body 12 along a direction perpendicular to the passage 121, and an upper end cover 11 is mounted at an upper end opening of the mounting hole 122 on the valve body 12; a ball core 1 for controlling the on-off of the channel 121 is rotatably connected in the mounting hole 122; an installation cavity 123 is formed between the upper end of the valve body 12 and the upper end cover 11, a first shaft hole 111 with the lower end communicated with the installation cavity 123 is arranged in the upper end cover 11 along the vertical direction, a loop bar 5 with the lower end positioned in the installation cavity 123 is rotatably connected in the first shaft hole 111, a transmission disc 51 is arranged at the lower end of the loop bar 5 along the radial direction, and the transmission disc 51 is positioned in the installation cavity 123; the upper end of the ball core 1 is provided with a valve rod 112 extending into the loop bar 5 along the axial direction of the loop bar 5; the upper end of the loop bar 5 is fixedly provided with a first handle 13, and the upper end of the valve rod 112 extends out of the loop bar 5 and is fixedly provided with a second handle 14.

A left threaded sleeve 9b is arranged at the left end of the channel 121 in the valve body 12, and a left valve seat cylinder 3b is connected in the left threaded sleeve 9b in a sliding manner along the axial direction of the channel 121; a left limiting groove 12a communicated with the channel 121 and the mounting cavity 123 is formed in the valve body 12 along the axial direction of the left valve seat cylinder 3b, a left connecting rod 15b is hinged to the transmission disc 51, and a left convex rod 6b penetrating through the left limiting groove 12a and extending into the channel 121 is fixedly mounted at the other end of the left connecting rod 15 b; the outer side surface of the left valve seat barrel 3b is provided with a left shoulder 3b1 along the radial direction, and a left spring 10b for forcing the left shoulder 3b1 to press on the left protruding rod 6b is arranged between the left screw sleeve 9b and the left shoulder 3b 1.

The side wall of the first shaft hole 111 is provided with a positioning groove 112 along the radial direction, a positioning ball 7 and a positioning spring 113 for forcing the positioning ball 7 to be pressed on the loop bar 5 are arranged in the positioning groove 112, the outer side surface of the loop bar 5 is provided with a first positioning hole 57 and a second positioning hole 56, when the positioning ball 7 is positioned in the first positioning hole 57, the right end of the left valve seat cylinder 3b is pressed on the ball core 1, and when the positioning ball 7 is positioned in the second positioning hole 56, the right end of the left valve seat cylinder 3b leaves the ball core 1.

A right threaded sleeve 9a is arranged at the right end of the channel 121 in the valve body 12, and a right valve seat cylinder 3a is connected in the right threaded sleeve 9a in a sliding manner along the axial direction of the channel 121; a right limiting groove 12b communicated with the channel 121 and the mounting cavity 123 is formed in the valve body 12 along the axial direction of the right valve seat cylinder 3a, a right connecting rod 15a is hinged to the transmission disc 51, and a right protruding rod 6a penetrating through the right limiting groove 12b and extending into the channel 121 is fixedly mounted at the other end of the right connecting rod 15 a; the outer side surface of the right valve seat cylinder 3a is provided with a right shoulder 3a1 along the radial direction, and a right spring 10a for forcing the right shoulder 3a1 to press the right convex rod 6a is arranged between the right screw sleeve 9a and the right shoulder 3a 1; when the positioning ball 7 is located in the first positioning hole 57, the left end of the right valve cylinder 3a is pressed against the ball core 1, and when the positioning ball 7 is located in the second positioning hole 56, the left end of the right valve cylinder 3a is separated from the ball core 1.

The inner edge of the ball core 1 is provided with a communication hole 105 which is vertical to the valve rod 112, when the ball core 1 opens the channel 121, the communication hole 105 and the channel 121 are in a coaxial position, and when the ball core 1 closes the channel 121, the communication hole 105 and the channel 121 are in a vertical position.

The lower extreme of ball core 1 is equipped with protruding axle 106 that stretches out from the bottom of mounting hole 122, the lower extreme of protruding axle 106 is equipped with screw hole 107, the axial along protruding axle 106 in protruding axle 106 and the ball core 1 is equipped with the spout 108 with intercommunicating pore 105 intercommunication, sliding connection has regulating plate 2 in the spout 108, regulating plate 2 is used for controlling intercommunicating pore 105 flow area's size, screw hole 107 department fixed mounting has plug 41, plug 41 internal rotation is connected with adjusts pole 4, adjust the upper end of pole 4 and adjust 4 threaded connection of pole, rotate to adjust pole 4 and drive regulating plate 2 and slide in spout 108. The plug 41 is provided with a rotary groove 42 on the outer side of the adjusting rod 4, the outer side of the adjusting rod 4 is provided with a shoulder 43 positioned in the rotary groove 42 along the radial direction, and the lower end opening of the rotary groove 42 is provided with a threaded sleeve 44 for preventing the shoulder 43 from separating from the rotary groove 42.

When the high-pressure metal sealing ball valve is opened from a closed state, the sleeve rod 5 is firstly controlled to drive the rotary table to rotate, so that the positioning ball 7 is separated from the first positioning hole 57 and enters the second positioning hole 56, and when the rotary table rotates, the left connecting rod 15b pushes the left convex rod 6b to drive the left valve seat cylinder 3b to move leftwards to compress the left spring 10b, so that the right end of the left valve seat cylinder 3b leaves the ball core 1; meanwhile, the right connecting rod 15a pushes the right protruding rod 6a to drive the right valve seat cylinder 3a to move rightwards to compress the right spring 10a, so that the left end of the right valve seat cylinder 3a leaves the ball core 1; then, the valve rod 112 is rotated to drive the ball core 1 to rotate 90 degrees, so that the communication hole 105 and the channel 121 are positioned at the same axial position, the channel 121 is opened, then the loop bar 5 is rotated reversely, the positioning ball 7 is separated from the second positioning hole 56 and enters the first positioning hole 57, the loop bar 5 drives the turntable to rotate when rotating, the turntable pulls the left convex rod 6b to move rightwards through the left connecting rod 15b, the left spring 10b is reset, and the right end of the left valve seat cylinder 3b is tightly pressed on the ball core 1; meanwhile, the turntable pulls the right convex rod 6a to move leftwards through the right connecting rod 15a, the right spring 10a is reset, and the left end of the right valve seat cylinder 3a is pressed on the ball core 1; thereby completing the opening of the ball valve. When the flow rate of the ball valve needs to be adjusted, the adjustment lever 4 is rotated, and the adjustment lever 4 positioned in the slide groove 108 is driven to move up and down when the adjustment lever 4 is rotated, and when the adjustment lever 4 moves upward, the flow area of the communication hole 105 decreases, the flow rate passing through the ball valve decreases, and when the adjustment plate 2 moves downward, the flow area of the communication hole 105 increases, and the flow rate passing through the ball valve increases.

When the high-pressure metal sealing ball valve is closed from an open state, the sleeve rod 5 is controlled to drive the rotary table to rotate, so that the positioning ball 7 is separated from the first positioning hole 57 and enters the second positioning hole 56, and when the rotary table rotates, the left connecting rod 15b pushes the left convex rod 6b to drive the left valve seat cylinder 3b to move leftwards to compress the left spring 10b, so that the right end of the left valve seat cylinder 3b leaves the ball core 1; meanwhile, the right connecting rod 15a pushes the right protruding rod 6a to drive the right valve seat cylinder 3a to move rightwards to compress the right spring 10a, so that the left end of the right valve seat cylinder 3a leaves the ball core 1; then the valve rod 112 is rotated to drive the ball core 1 to rotate 90 degrees, so that the communication hole 105 and the channel 121 are positioned at mutually perpendicular positions, then the loop bar 5 is rotated reversely, so that the positioning ball 7 is separated from the second positioning hole 56 and enters the first positioning hole 57, the loop bar 5 drives the turntable to rotate when rotating, the turntable pulls the left convex rod 6b to move rightwards through the left connecting rod 15b, the left spring 10b is reset, and the right end of the left valve seat cylinder 3b is tightly pressed on the ball core 1; meanwhile, the turntable pulls the right convex rod 6a to move leftwards through the right connecting rod 15a, the right spring 10a is reset, and the left end of the right valve seat cylinder 3a is pressed on the ball core 1; 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.