CN211852882U - Novel corrugated pipe ball valve - Google Patents
Novel corrugated pipe ball valve Download PDFInfo
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- CN211852882U CN211852882U CN202020351035.0U CN202020351035U CN211852882U CN 211852882 U CN211852882 U CN 211852882U CN 202020351035 U CN202020351035 U CN 202020351035U CN 211852882 U CN211852882 U CN 211852882U
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Abstract
The utility model relates to a novel corrugated pipe ball valve, which comprises a valve body, a valve seat, a ball body, a valve cover, a valve rod, a bracket and a hand wheel, wherein the valve rod consists of a lower valve rod and an upper valve rod; the method is characterized in that: the lower end of the upper valve rod is movably matched and connected with the inner hole wall of the cylinder at the upper end of the lower valve rod; a motion track conversion device and an anti-rotation device are arranged between the inner hole wall of the cylinder and the lower end of the upper valve rod; the upper valve rod is provided with the corrugated pipe, and the positioning ring is arranged between the outer circular surface of the corrugated pipe and the inner hole wall of the support, so that the radial inclination of the corrugated pipe is prevented from generating friction with the inner wall of the support and the outer circular surface of the valve rod when the corrugated pipe is compressed, the sealing performance is reliable, and the service life of the product is long.
Description
Technical Field
The utility model belongs to the valve field especially relates to a bellows ball valve. The utility model is suitable for an inflammable, explosive, poisonous high-risk medium operating mode.
Background
The ball valve generally comprises a valve body, a valve seat, a valve rod, a valve cover and a ball body, wherein the valve rod and the valve cover are generally sealed by adopting packing, and the packing is easily abraded in the process of repeatedly rotating the valve rod to cause the leakage of a middle cavity. The bellows ball valve is a novel structure developed aiming at easy abrasion of the filler, such as the bellows ball valve with the patent number of CN201120244133.5, and comprises a valve body, a valve cover, a ball body, a valve rod and a valve rod operating mechanism, wherein the valve rod which moves axially and linearly is sleeved with the bellows, one end of the bellows is fixedly and hermetically connected with the valve cover, the other end of the bellows is hermetically welded on the valve rod, and the dynamic seal of the filler between the valve cover and the valve cover is converted into the static seal at the two ends of the bellows, so that zero leakage can be realized. The main disadvantages are: when the valve rod moves up and down to drive the ball body to rotate for 90 degrees, the corrugated pipe needs to be guaranteed to have enough compression amount, the corrugated pipe is required to have longer axial length, radial distortion is easy to occur to the corrugated pipe in the compression process, the outer wall of the corrugated pipe is in contact with the inner wall of the valve cover to generate friction, the inner wall of the corrugated pipe is in contact with the outer wall of the valve rod to generate friction, and the corrugated pipe is easy to crack to generate leakage due to long-term repeated friction.
Disclosure of Invention
The utility model discloses shortcoming to prior art exists provides one kind and can avoid bellows and valve gap and valve rod contact friction, the reliable novel bellows ball valve of sealing performance.
The technical scheme of the utility model comprises a valve body, a valve seat, a ball body, a valve cover, a valve rod, a support and a hand wheel, wherein the valve rod consists of a lower valve rod and an upper valve rod; the method is characterized in that: a guide seat is arranged between the support and the lower valve rod seat, a radial annular convex shoulder is arranged in the middle of the lower valve rod, the radial annular convex shoulder is movably arranged between the lower end surface of the guide seat and the inner step of the lower valve rod seat, the lower valve rod on the upper side of the radial annular convex shoulder is of a cylinder structure, the outer circular surface of the cylinder is in movable fit with the inner circular wall of the guide seat, and the lower end of the upper valve rod is in movable fit connection with the inner hole wall of the cylinder; a motion track conversion device and an anti-rotation device are arranged between the inner hole wall of the cylinder and the lower end of the upper valve rod; the motion trail conversion device is formed by mutually matching a 90-degree spiral groove formed in the inner hole wall of the cylinder and a cylindrical pin at the lower end of the upper valve rod, converts the axial movement of the upper valve rod into 90-degree rotation of the lower valve rod, and the anti-rotation device is formed by mutually matching an axial guide groove above the guide seat 8 and a radial anti-rotation pin on the upper valve rod, and converts the rotation of the hand wheel into the axial movement of the upper valve rod; a valve rod nut seat is fixedly installed at the upper end of the bracket, a hand wheel is installed in an installation cavity at the upper end of the valve rod nut seat through a valve rod nut, and an inner hole of the valve rod nut is matched and connected with the upper end of an upper valve rod through threads; the corrugated pipe is arranged between the upper valve rod above the radial anti-rotation pin and the lower end face of the valve rod nut seat, the lower end of the corrugated pipe is welded on the valve rod through the lower connecting seat, the upper end of the corrugated pipe is hermetically arranged on the lower end face of the valve rod nut seat through the upper connecting seat, the positioning ring is arranged between the outer circular face of the corrugated pipe and the inner hole wall of the support, the inner hole of the positioning ring is fixedly connected onto the outer circular wall of the corrugated pipe, and the outer circular face of the.
In above technical scheme, lower connecting seat and last connecting seat comprise base and clamping ring, and the clamping ring hole suit is at the excircle face of base, and the tip of bellows passes the clearance pressure equipment between the excircle face of base and the clamping ring hole and between the radial step of base and the radial terminal surface of clamping ring, and the circumference adopts welding sealing connection between radial step of base and the radial terminal surface of clamping ring.
In the technical scheme, the outer diameter of the radial end face of the pressure ring is larger than that of the radial step of the base, the end part of the corrugated pipe is radially pressed in the radial end face of the pressure ring, the end part of the corrugated pipe is located between the radial outer circular face of the pressure ring and the radial outer circular face of the step of the base, and the circumference between the radial end face of the pressure ring and the radial outer circular face of the step of the base is connected in a welding and.
The utility model has the advantages of compared with the prior art set up the holding ring between the outer disc of bellows and the interior pore wall of support, radial slope produces the friction with the outer disc of support inner wall and valve rod when preventing the bellows compression, and its sealing performance is reliable, product long service life.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural view of the lower connecting seat of fig. 1 according to the present invention.
Fig. 3 is a schematic structural view of the upper connecting seat of fig. 1 according to the present invention.
In the figure: 1. the valve comprises a valve body, 2, a valve seat, 3, a ball body, 4, a valve cover, 5, a lower valve rod, 6, a lower valve rod seat, 7, a cylindrical pin, 8, a guide seat, 9 and 90-degree spiral grooves, 10, an upper valve rod, 11, a support, 12, a radial anti-rotation pin, 13, an axial guide groove, 14, a lower connecting seat, 15, a corrugated pipe, 16, an upper connecting seat, 17, packing, 18, a gland, 19, a valve rod nut seat, 20, a valve rod nut, 21, a hand wheel, 22, a positioning ring, 23, a pressing ring, 24 and a base.
Detailed Description
The novel corrugated pipe ball valve shown in fig. 1 comprises a valve body 1, a valve seat 2, a ball body 3, a valve cover 4, a valve rod, a support 11 and a hand wheel 21, wherein the valve rod consists of a lower valve rod 5 and an upper valve rod 10, the lower valve rod 5 is installed in a lower valve rod seat 6, the lower end of the lower valve rod seat 6 is fixedly installed on the upper end surface of the valve body 1, the lower end of the support 11 is fixedly installed at the upper end of the lower valve rod seat 6, and the lower end of the lower valve rod 5 is inserted into the inner cavity of the valve body; the method is characterized in that: a guide seat 8 is arranged between the support 11 and the lower valve rod seat 6, a radial annular convex shoulder is arranged in the middle of the lower valve rod 5 and movably arranged between the lower end surface of the guide seat 8 and an inner step of the lower valve rod seat 6, gaskets are respectively arranged between the upper ring surface of the radial annular convex shoulder and the lower end surface of the guide seat 8 and between the lower ring surface of the radial annular convex shoulder and the inner step surface of the lower valve rod seat 6 to prevent the lower valve rod 5 from axially moving, and the circumferential direction can be freely limited; the lower valve rod 5 on the upper side of the radial annular convex shoulder is of a cylindrical structure, the outer circular surface of the cylinder is in movable fit with the inner circular wall of the guide seat 8, the lower end of the upper valve rod 10 is in movable fit connection with the inner circular wall of the cylinder, namely the upper valve rod 10 is inserted into the inner circular hole on the upper part of the lower valve rod 5, and the outer circular surface of the upper valve rod is in movable fit with the inner circular wall of the cylinder; a motion track conversion device and an anti-rotation device are arranged between the inner hole wall of the cylinder and the lower end of the upper valve rod 10; the motion trail conversion device is formed by mutually matching 90-degree spiral grooves 9 formed in symmetrical positions on two sides of the inner hole wall of the cylinder with a cylindrical pin 7 at the lower end of an upper valve rod 10, when the upper valve rod 10 moves up and down, two ends of the cylindrical pin 7 slide in the 90-degree spiral grooves 9, the axial movement of the upper valve rod 10 is converted into 90-degree rotation of a lower valve rod 5, the anti-rotation device is formed by mutually matching an axial guide groove 13 above a guide seat 8 and a radial anti-rotation pin 12 on the upper valve rod 10, and the rotation of a hand wheel 21 is converted into the axial movement of the upper valve rod 10; a valve rod nut seat 19 is fixedly installed at the upper end of the support 11, a hand wheel 21 is installed in an installation cavity at the upper end of the valve rod nut seat 19 through a valve rod nut 20, the external thread at the upper end of the upper valve rod 10 is matched and connected with the internal thread of the valve rod nut 20, a packing 17 is arranged between the valve rod nut seat 19 and the outer circular surface of the upper valve rod 10, and the packing 17 is pressed in a packing cavity between the upper valve rod 10 and the valve rod nut seat 19 through a gland 18; a corrugated pipe 15 is arranged between the lower end face of an upper valve rod 10 and a valve rod nut seat 19 above a radial anti-rotation pin 12, the lower end of the corrugated pipe 15 is welded on the upper valve rod 10 through a lower connecting seat 14, the upper end of the corrugated pipe is hermetically arranged on the lower end face of the valve rod nut seat 19 through an upper connecting seat 16, a positioning ring 22 is arranged between the outer circular face of the corrugated pipe 15 and the inner hole wall of a support 11, the inner hole of the positioning ring 22 is fixedly connected to the outer circular wall of the corrugated pipe 15, the outer circular face of the positioning ring 22 is in movable contact with the inner hole wall of the support 11, the positioning ring 22 is made of light metal or non-metal materials and can move up and down along with. The inner hole of the positioning ring 22 and the outer circular surface of the corrugated pipe 15 can be connected by adhesive or by welding, and the number of the inner hole is set according to the length of the corrugated pipe 15.
Lower connecting seat 14 and last connecting seat 16 comprise base 24 and clamping ring 23, clamping ring 23 inner bore suit is in the excircle face of base 24, the tip of bellows 15 passes the clearance pressure equipment between 24 excircle faces of base and the clamping ring 23 inner bore and is between the radial step of base 24 and the radial terminal surface of clamping ring 23, the circumferencial direction adopts welding sealing connection between 24 radial steps of base and the radial terminal surface of clamping ring 23, with 15 tip seal welding of bellows between clamping ring 23 and base 24, avoid direct welding bellows 15 to lead to 15 welding damages to take place to leak.
The outer diameter of the radial end face of the pressing ring 23 is larger than the outer diameter of the radial step of the base 24, the end part of the corrugated pipe 15 is radially pressed in the radial end face of the pressing ring 23, the end part of the corrugated pipe 15 is located between the radial outer circular face of the pressing ring 23 and the radial outer circular face of the radial step of the base 24, the circumference between the radial end face of the pressing ring 23 and the radial outer circular face of the radial step of the base 24 is in welded sealing connection, and the corrugated pipe 15 is reliably welded between the pressing ring 23 and the base.
Claims (3)
1. A novel corrugated pipe ball valve comprises a valve body (1), a valve seat (2), a ball body (3), a valve cover (4), a valve rod, a support (11) and a hand wheel (21), wherein the valve rod consists of a lower valve rod (5) and an upper valve rod (10), the lower valve rod (5) is installed in a lower valve rod seat (6), the lower end of the lower valve rod seat (6) is fixedly installed on the upper end surface of the valve body (1), the lower end of the support (11) is fixedly installed at the upper end of the lower valve rod seat (6), and the lower end of the lower valve rod (5) is inserted into an inner cavity of the valve body (1) and connected with the ball; the method is characterized in that: a guide seat (8) is arranged between a support (11) and a lower valve rod seat (6), a radial annular convex shoulder is arranged in the middle of a lower valve rod (5), the radial annular convex shoulder is movably arranged between the lower end surface of the guide seat (8) and an inner step of the lower valve rod seat (6), the upper side part of the lower valve rod (5) positioned on the radial annular convex shoulder is of a cylinder structure, the outer circular surface of the cylinder is in movable fit with the inner circular wall of the guide seat (8), and the lower end of an upper valve rod (10) is in movable fit connection with the inner hole wall of the cylinder; a motion track conversion device and an anti-rotation device are arranged between the inner hole wall of the cylinder and the lower end of the upper valve rod (10); the motion trail conversion device is formed by mutually matching 90-degree spiral grooves (9) formed in symmetrical positions on two sides of the inner hole wall of the cylinder and a cylindrical pin (7) at the lower end of an upper valve rod (10), axial movement of the upper valve rod (10) is converted into 90-degree rotation of a lower valve rod (5), the anti-rotation device is formed by mutually matching an axial guide groove (13) above a guide seat (8) and a radial anti-rotation pin (12) on the upper valve rod (10), and rotation of a hand wheel (21) is converted into axial movement of the upper valve rod (10); a valve rod nut seat (19) is fixedly installed at the upper end of the support (11), a hand wheel (21) is installed in an installation cavity at the upper end of the valve rod nut seat (19) through a valve rod nut (20), and external threads at the upper end of the upper valve rod (10) are matched and connected with internal threads of the valve rod nut (20); set up bellows (15) between last valve rod (10) and valve rod nut seat (19) lower terminal surface above radial anti-rotation pin (12), this bellows (15) lower extreme welds on last valve rod (10) through connecting seat (14) down, the upper end is through last connecting seat (16) seal installation at the lower terminal surface of valve rod nut seat (19), set up holding ring (22) between bellows (15) excircle face and support (11) inner hole wall, this holding ring (22) hole fixed connection is on bellows (15) excircle wall, holding ring (22) excircle face and support (11) inner hole wall movable contact.
2. A novel bellows ball valve as claimed in claim 1, wherein: lower connecting seat (14) and last connecting seat (16) comprise base (24) and clamping ring (23), and the excircle face at base (24) is adorned to clamping ring (23) inner bore cover, and the tip of bellows (15) passes the clearance pressure equipment between base (24) excircle face and clamping ring (23) hole between the radial step of base (24) and the radial terminal surface of clamping ring (23), and the circumferencial direction adopts welding sealing connection between base (24) radial step and clamping ring (23) radial terminal surface.
3. A novel bellows ball valve as claimed in claim 2, wherein: the outer diameter of the radial end face of the pressing ring (23) is larger than the outer diameter of the radial step of the base (24), the end part of the corrugated pipe (15) is radially pressed in the radial end face of the pressing ring (23), the end part of the corrugated pipe (15) is located between the radial outer circular face of the pressing ring (23) and the radial outer circular face of the radial step of the base (24), and the radial end face of the pressing ring (23) and the radial outer circular face of the radial step of the base (24) are connected in a welding and sealing mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020351035.0U CN211852882U (en) | 2020-03-19 | 2020-03-19 | Novel corrugated pipe ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020351035.0U CN211852882U (en) | 2020-03-19 | 2020-03-19 | Novel corrugated pipe ball valve |
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| Publication Number | Publication Date |
|---|---|
| CN211852882U true CN211852882U (en) | 2020-11-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020351035.0U Active CN211852882U (en) | 2020-03-19 | 2020-03-19 | Novel corrugated pipe ball valve |
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| CN (1) | CN211852882U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115451183A (en) * | 2021-06-08 | 2022-12-09 | 上海弘盛特种阀门制造股份有限公司 | Split type corrugated pipe track ball valve |
| CN117345896A (en) * | 2023-12-05 | 2024-01-05 | 艾坦姆流体控制技术(山东)有限公司 | Bellows sealing ball valve |
-
2020
- 2020-03-19 CN CN202020351035.0U patent/CN211852882U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115451183A (en) * | 2021-06-08 | 2022-12-09 | 上海弘盛特种阀门制造股份有限公司 | Split type corrugated pipe track ball valve |
| CN117345896A (en) * | 2023-12-05 | 2024-01-05 | 艾坦姆流体控制技术(山东)有限公司 | Bellows sealing ball valve |
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