CN117386837A

CN117386837A - High-performance regulating disc valve

Info

Publication number: CN117386837A
Application number: CN202311101347.0A
Authority: CN
Inventors: 尚玉来; 丁新; 金卡迪; 李平; 叶迅良; 周财慈; 陈安定; 苏丽君; 胡安纯
Original assignee: Zhejiang Bertley Technology Co ltd
Current assignee: Zhejiang Bertley Technology Co ltd
Priority date: 2023-08-29
Filing date: 2023-08-29
Publication date: 2024-01-12

Abstract

The invention discloses a high-performance regulating disc valve which comprises a valve body, a valve rod, a rocker arm, a valve clack, an actuator and a swing arm, wherein an upper valve cover and a lower valve cover are respectively arranged at two ends of the valve body; the packing sealing mechanism comprises a supporting sleeve, an upper packing, a lower packing, a packing pressing sleeve and a packing pressing plate, wherein the upper valve cover is provided with a sealing groove coaxial with the valve rod, the inner end of the supporting sleeve is provided with a supporting flange extending towards the inner periphery, a sealing cavity is formed between the supporting sleeve and the valve rod, the packing pressing plate is connected with the upper valve cover, the packing pressing plate presses the upper end of the packing pressing sleeve, the packing pressing sleeve presses the upper packing in the sealing cavity, and the supporting sleeve is connected with the lower packing. The invention has good sealing performance, is convenient for replacing the filler and is beneficial to the later maintenance operation.

Description

High-performance regulating disc valve

Technical Field

The invention relates to the technical field of valves, in particular to a high-performance regulating disc valve.

Background

The disk valve is a quick-opening and quick-closing valve which realizes opening and closing by sliding a disk. The design is specially aimed at materials with abrasion and erosion characteristics, and the device can continuously and normally work for a long time under severe working conditions.

In the existing disc valve, a packing sealing assembly is adopted between a valve rod and a valve cover to prevent external leakage, however, packing in the packing sealing assembly can wear after long-term use, and if the packing is not replaced in time, leakage is easy to occur. However, the filler is not easy to replace, and because the filler is tightly pressed in the sealing groove of the valve cover for a long time, the filler at a deeper part is difficult to take out, and part of the filler is adhered with the sealing groove, so that the taking out of the filler is further increased, and great inconvenience is caused to later maintenance.

Disclosure of Invention

The invention aims to provide the high-performance regulating disc valve which is good in sealing performance, convenient to replace filler and beneficial to later maintenance operation.

In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a high performance regulating disk valve, includes valve body, valve rod, rocking arm, valve clack, executor and swing arm, upper valve gap and lower valve gap are installed respectively at the valve body both ends, the valve rod runs through upper valve gap and stretches into the valve body, the one end of rocking arm is connected with the inner linkage of valve rod, the other end of rocking arm is connected with the valve clack linkage, upper valve gap installs the disk seat that is used for forming sealed fit with the valve clack in the inner, the support is installed to the upper valve gap, the stiff end of executor articulates on the support, the extension end of executor is connected with the one end linkage of swing arm, the other end of swing arm is connected with the outer linkage of valve rod; the packing sealing mechanism comprises a supporting sleeve, an upper packing, a lower packing, a packing pressing sleeve and a packing pressing plate, wherein the upper valve cover is provided with a sealing groove coaxial with the valve rod, the supporting sleeve is arranged in the sealing groove, the inner end of the supporting sleeve is provided with a supporting flange extending towards the inner circumference, a sealing cavity is formed between the supporting sleeve and the valve rod, the packing pressing plate is connected with the upper valve cover, the packing pressing plate presses the upper end of the packing pressing sleeve, the packing pressing sleeve presses the upper packing in the sealing cavity, and meanwhile, the supporting sleeve presses the lower packing at the inner end of the sealing groove, and the supporting sleeve is connected with the lower packing in a linkage manner.

Through adopting above-mentioned scheme, drive the swing arm motion through the executor, the swing arm drives the valve rod and rotates, and the valve rod rotates and drives the rocking arm swing, and then drives the swing of valve clack to realize the flow control and the operation of opening and close of valve. The packing sealing assembly comprises a supporting sleeve, an upper packing, a lower packing, a packing pressing sleeve and a packing pressing plate, wherein the upper packing and the packing pressing sleeve are arranged on the upper portion of a supporting flange of the supporting sleeve, the lower packing is arranged on the lower portion of the supporting flange and is connected with the supporting flange in a linkage mode, when the packing pressing sleeve is detached, the packing pressing plate is detached, the supporting sleeve is lifted upwards, the lower packing, the upper packing and the packing pressing sleeve can be easily pulled out, and the upper packing and the lower packing are respectively arranged at the upper end and the lower end of the supporting flange, so that the sealing performance between the valve rod and the upper valve cover is not affected. Therefore, the invention not only has good sealing performance, but also is convenient for replacing the filler and is beneficial to the later maintenance operation.

The invention is further arranged that the support flange on the support sleeve is connected with the lower packing through a plurality of locking screws, and a plurality of grooves for embedding screw heads of the corresponding locking screws are formed in the support flange.

Through adopting above-mentioned scheme, connection structure is simple reliable, and the dismouting is very convenient, and the two laminating positions can not receive the influence of screw head, and the cooperation is inseparable, and the leakproofness is good.

The invention is further characterized in that an inner sealing ring and an outer sealing ring are clamped between the supporting sleeve and the lower packing, the locking screw is arranged between the inner sealing ring and the outer sealing ring, and sealing gaskets for propping against the outer ends of screw heads of the locking screw are inserted into the grooves.

Through adopting above-mentioned scheme, can protect locking screw, avoid its and liquid direct contact, play the effect of rust-resistant.

The packing sealing mechanism further comprises an upward pushing assembly, the upward pushing assembly comprises a rotating ring and an upward pushing ring, a boss coaxial with the valve rod is arranged on the upper valve cover, a light face part and a thread part are sequentially arranged on the periphery of the boss from top to bottom, the outer diameter of the light face part is smaller than that of the thread part, the rotating ring is in threaded connection with the thread part, the upward pushing ring is sleeved on the periphery of the light face part, the bottom of the upward pushing ring abuts against the top of the rotating ring, a stress flange extending towards the periphery is arranged at the upper end of the supporting sleeve, and the stress flange is arranged right above the upward pushing ring.

Through adopting above-mentioned scheme, when changing the packing, push up the subassembly and play the effect that does benefit to the support cover and lift, operate the swivel becket promptly, the swivel becket rises, drives and pushes up the swivel becket and rises, and the atress flange that pushes up the swivel becket and acts on the support cover makes the support cover rise, and this structure has made things convenient for the application of force of operator for it is lighter laborsaving to promote the operation of support cover.

The invention is further characterized in that a plurality of guide grooves extending along the axial direction are arranged on the light surface part along the circumferential direction, and a plurality of guide protrusions matched with the guide grooves are arranged on the inner circumference of the push-up ring.

Through adopting above-mentioned scheme, can avoid pushing up the ring and take place to rotate by the influence of swivel becket to reduce the friction between pushing up ring and the swivel becket and the friction between pushing up ring and the atress flange, and then promote the life who pushes up the subassembly.

The invention further provides that the push-up assembly further comprises a plurality of balls and lower pressing covers, the number of the lower pressing covers is equal to that of the balls, a plurality of lower screw holes are formed in the lower end of the push-up ring along the circumferential direction, the lower pressing covers are connected to the corresponding lower screw holes in a threaded mode, pressing flanges used for limiting the corresponding balls to the corresponding lower screw holes are arranged on the inner periphery of the lower pressing covers, the lower end portions of the balls penetrate through the pressing flanges, and annular tracks matched with the bottoms of the balls are arranged at the upper ends of the rotating rings.

By adopting the scheme, the rolling fit mode is adopted between the rotating ring and the push-up ring, so that the friction between the rotating ring and the push-up ring is reduced, and the operation is more labor-saving.

The invention further provides that the push-up assembly further comprises a plurality of jacking blocks and upper pressing covers, the number of the jacking blocks is equal to that of the jacking blocks, a plurality of upper screw holes are formed in the upper end of the push-up ring, the upper pressing covers are connected to the upper screw holes in a threaded mode, the jacking blocks axially penetrate through the corresponding upper pressing covers, the inner ends of the jacking blocks are provided with limiting flanges which extend outwards and are used for limiting travel with the upper pressing covers when the jacking blocks ascend, and a first spring is clamped between the inner ends of the jacking blocks and the inner ends of the corresponding upper screw holes.

Through adopting above-mentioned scheme, the kicking block can axial flexible under the effect of first spring, go up the push ring and rise the back, go up the kicking block on the push ring and offset with the atress flange of supporting the cover first, go up the push ring and shrink gradually at this moment, the positive pressure that the atress flange received grow gradually, until the kicking block is completely contracted into the upper screw, go up the push ring and offset with the atress flange, the effort is biggest this moment, thereby play the effect of exerting a little to big effort to the atress flange, it not only can avoid the influence that the supporting cover received the instantaneous force to lead to its easy damage, and it is more easy to push up the supporting cover stability by little to big effort, the operation is lighter.

The invention is further characterized in that a fan-shaped adjusting opening is arranged in the middle of the valve seat.

By adopting the scheme, the valve seat adopts the fan-shaped adjusting port, and the fan-shaped flow adjusting hole designed by computer finite element numerical analysis has the inherent flow characteristics of equal percentage and the accurate adjustable proportion of up to 300:1, thereby meeting the accurate requirement of users.

The valve clack is further provided with a pressure relief opening along the axial direction, the pressure relief opening is provided with a pressure relief assembly, the pressure relief assembly comprises a mounting seat, a guide rod, a second spring and a limiting seat, the mounting seat is in threaded connection with one end of the pressure relief opening far away from a valve seat, the mounting seat is provided with an inlet flow passage along the axial direction, the limiting seat is in threaded connection with one end of the inlet flow passage close to the valve seat, the guide rod penetrates through the limiting seat, the inner end of the guide rod is provided with a piston part extending towards the periphery, the periphery of the piston part is provided with a first sealing ring which is used for forming sealing fit with the inner wall of the inlet flow passage, the inside of the inlet flow passage is also provided with a limiting step, the second spring is clamped between the limiting seat and the piston part and presses the piston part on the limiting step, the lower end of the guide rod is provided with an upward extending axial passage, the upper end of the axial passage is provided with a plurality of radial passages extending along the radial directions, and when the piston part abuts against the limiting step, the outer end of the radial passage coincides with the inner wall of the limiting seat.

Through adopting above-mentioned scheme, set up the pressure release subassembly on the valve clack, when the valve closed, if the unusual increase of upstream internal pressure, when exceeding the critical value, the pressure release subassembly opens the pressure release, reduces the emergence of upstream pressure, can avoid great incident.

The invention further provides a positioning device and a connecting rod, wherein the positioning device is arranged on the support, one end of the connecting rod is hinged with the positioning device, and the other end of the connecting rod is hinged with the swing arm.

Through adopting above-mentioned scheme, unique connecting rod is with locator rotation angle and disc valve aperture accurate connection, can reflect on the locator in real time when executor swing rocking arm is rotatory, accomplish accurate control, accurate regulation.

Drawings

FIG. 1 is a schematic view of the overall appearance structure of the present invention;

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

FIG. 3 is a schematic structural view of the packing seal mechanism of the present invention;

FIG. 4 is an enlarged schematic view of the portion A in FIG. 3;

fig. 5 is an enlarged schematic view of the portion B in fig. 2.

In the figure: 1. a valve body; 2. a valve stem; 3. a rocker arm; 4. a valve flap; 5. an actuator; 6. swing arms; 7. an upper valve cover; 8. a lower valve cover; 9. a valve seat; 10. a bracket; 11. a packing seal mechanism; 12. a support sleeve; 13. filling materials; 14. a lower filler; 15. packing pressing sleeve; 16. a packing pressing plate; 17. sealing grooves; 18. a support flange; 19. sealing the cavity; 20. locking a screw; 21. a groove; 22. an inner seal ring; 23. an outer seal ring; 24. a sealing gasket; 25. a push-up assembly; 26. a rotating ring; 27. pushing up the ring; 28. a boss; 29. a light face portion; 30. a threaded portion; 31. a force-bearing flange; 32. a guide groove; 33. a guide protrusion; 34. a ball; 35. a lower gland; 36. a lower screw hole; 37. a pressing flange; 38. an endless track; 39. a top block; 40. a gland is arranged; 41. an upper screw hole; 42. a limit flange; 43. a first spring; 44. a fan-shaped adjusting port; 45. a pressure relief port; 46. a pressure relief assembly; 47. a mounting base; 48. a guide rod; 49. a second spring; 50. a limit seat; 51. an inlet flow passage; 52. a piston section; 53. a first seal ring; 54. a limit step; 55. an axial passage; 56. a radial passage; 57. a positioner; 58. and a connecting rod.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Examples: the high-performance regulating disc valve comprises a valve body 1, a valve rod 2, a rocker arm 3, a valve clack 4, an actuator 5 (a pneumatic actuator can be adopted) and a swing arm 6, wherein an upper valve cover 7 and a lower valve cover 8 are respectively arranged at two ends of the valve body 1 and are connected together in a screw and nut matching mode, the valve rod 2 penetrates through the upper valve cover 7 and stretches into the valve body 1, namely, a shaft hole for the common valve rod 2 to penetrate through is formed in the upper valve cover 7, a bearing seat is arranged in the valve body 1, the inner end of the valve rod 2 is rotatably arranged on the bearing seat, a bearing matched with the valve rod 2 is also arranged at the inner end of the shaft hole in the upper valve cover 7, dust-proof seals are arranged in all bearing areas, and particles and dirt in media are prevented from entering the bearing area to damage the bearing. The radial bearing material can withstand high temperatures, the design of the bearing area is complete, and the possibility of locking the valve rod 2 due to inconsistent material deformation caused by high temperatures is reduced to zero. One end of the rocker arm 3 is in linkage connection with the inner end of the valve rod 2, the other end of the rocker arm 3 is in linkage connection with the valve clack 4, a valve seat 9 used for forming sealing fit with the valve clack 4 is arranged at the inner end of the upper valve cover 7, the valve seat 9 is fixed at the inner end of the upper valve cover 7 through a plurality of screws, a bracket 10 is arranged on the upper valve cover 7, the fixed end of the actuator 5 is hinged on the bracket 10, the extending end of the actuator 5 is in linkage connection with one end of the swing arm 6, and the other end of the swing arm 6 is in linkage connection with the outer end of the valve rod 2; the disc valve further comprises a packing sealing mechanism 11, the packing sealing mechanism 11 comprises a supporting sleeve 12, an upper packing 13, a lower packing 14, a packing pressing sleeve 15 and a packing pressing plate 16, a sealing groove 17 coaxial with the valve rod 2 is formed in the upper valve cover 7, the supporting sleeve 12 is arranged in the sealing groove 17, a supporting flange 18 extending towards the inner periphery is arranged at the inner end of the supporting sleeve 12, a sealing cavity 19 is formed between the supporting sleeve 12 and the valve rod 2, the packing pressing plate 16 is connected with the upper valve cover 7 through a loose joint bolt, the packing pressing plate 16 presses the upper end of the packing pressing sleeve 15, the packing pressing sleeve 15 presses the upper packing 13 into the sealing cavity 19, meanwhile, the supporting sleeve 12 presses the lower packing 14 into the inner end of the sealing groove 17, the supporting sleeve 12 is connected with the lower packing 14 in a linkage mode, the lower end of the lower packing 14 is in a conical shape with the upper size and the lower packing 14, and the shape of the inner end of the sealing groove 17 is matched with the lower packing 14. The actuator 5 drives the swing arm 6 to move, the swing arm 6 drives the valve rod 2 to rotate, the valve rod 2 rotates to drive the rocker arm 3 to swing, and then the valve clack 4 is driven to swing, so that flow regulation and opening and closing operations of the valve are realized. The packing sealing assembly is arranged between the valve rod 2 and the upper valve cover 7 and consists of a supporting sleeve 12, an upper packing 13, a lower packing 14, a packing pressing sleeve 15 and a packing pressing plate 16, the upper packing 13 and the packing pressing sleeve 15 are arranged on the upper portion of a supporting flange 18 of the supporting sleeve 12, the lower packing 14 is arranged on the lower portion of the supporting flange 18 and is connected with the supporting flange 18 in a linkage mode, when the valve rod is detached, the packing pressing plate 16 is detached firstly, then the supporting sleeve 12 is lifted upwards, the lower packing 14, the upper packing 13 and the packing pressing sleeve 15 can be easily pulled out, and the upper packing 13 and the lower packing 14 are respectively arranged at the upper end and the lower end of the supporting flange 18, so that the sealing performance between the valve rod 2 and the upper valve cover 7 is not affected. Therefore, the invention not only has good sealing performance, but also is convenient for replacing the filler and is beneficial to the later maintenance operation.

The valve adopts a metal sealing structure, and the surface hardening treatment process and the grinding process of the valve clack 4 and the valve seat 9 meet the requirements of the metal sealing structure on scouring resistance, friction resistance and zero leakage at high temperature, so that the service life of the valve is prolonged. The valve clack 4 is formed by integrally sintering hard alloy, and the sealing surface of the valve seat 9 is subjected to superhard spraying technology and the grinding technology of the valve clack 4 and the valve seat 9, so that the surface hardening layer is prevented from falling off under the scouring of a high-temperature medium, and the wear resistance and the scouring resistance of the product are ensured.

The valve clack 4 core adopts a unique spring pre-tightening technology, so that the sealing force required by low pressure is ensured, the sealing force under the high-temperature working condition can be automatically regulated, and the phenomenon that the sealing force is overlarge and even the valve torque is locked due to temperature change is prevented. In addition, the valve clack 4 is fixed to adopt the tight structure of valve clack core top of adjustable function, and mechanical stability is high, and all relative rotation positions all adopt self-lubricating design, and the case sphere adopts envelope grinding technique, guarantees that the circularity is not more than 0.005mm, and this design greatly reduced the operating torque when the disc valve rotates.

As shown in fig. 3, the support flange 18 on the support sleeve 12 is connected with the lower packing 14 through a plurality of locking screws 20, and a plurality of grooves 21 for embedding screw heads of the corresponding locking screws 20 are formed on the support flange 18. The design connection structure is simple and reliable, the disassembly and the assembly are very convenient, the joint part of the design connection structure and the assembly is not affected by the screw head, the assembly is tight, and the tightness is good.

As shown in fig. 3, an inner sealing ring 22 and an outer sealing ring 23 are sandwiched between the support sleeve 12 and the lower packing 14, the locking screw 20 is disposed between the inner sealing ring 22 and the outer sealing ring 23, and sealing gaskets 24 for propping against the outer ends of screw heads of the locking screw 20 are respectively inserted into the grooves 21. This design can protect locking screw 20 from direct contact with liquid, playing the rust-resistant effect.

As shown in fig. 3 and fig. 4, the packing seal mechanism 11 further includes a push-up assembly 25, the push-up assembly 25 includes a rotating ring 26 and a push-up ring 27, a boss 28 coaxial with the valve rod 2 is provided on the upper valve cover 7, a light surface portion 29 and a threaded portion 30 are sequentially provided on the periphery of the boss 28 from top to bottom, the outer diameter of the light surface portion 29 is smaller than that of the threaded portion 30, the rotating ring 26 is in threaded connection with the threaded portion 30, the push-up ring 27 is sleeved on the periphery of the light surface portion 29, the bottom of the push-up ring 27 abuts against the top of the rotating ring 26, a force flange 31 extending toward the periphery is provided on the upper end of the support sleeve 12, and the force flange 31 is disposed right above the push-up ring 27. When the packing is replaced, the push-up assembly 25 plays a role in facilitating lifting of the support sleeve 12, namely, the rotating ring 26 is operated, the rotating ring 26 is lifted, the push-up ring 27 is driven to lift, the push-up ring 27 acts on the stress flange 31 of the support sleeve 12, the support sleeve 12 is driven to lift, and the structure facilitates application of force by an operator, so that the operation of lifting the support sleeve 12 is easier and more labor-saving.

As shown in fig. 4, a plurality of axially extending guide grooves 32 are provided on the light surface 29 in the circumferential direction, and a plurality of guide protrusions 33 are provided on the inner circumference of the push-up ring 27 to be engaged with the guide grooves 32. This design can avoid push-up ring 27 to rotate under the influence of rotation ring 26 to reduce the friction between push-up ring 27 and rotation ring 26 and the friction between push-up ring 27 and atress flange 31, and then promote push-up assembly 25's life.

As shown in fig. 4, the push-up assembly 25 further includes a plurality of balls 34 and a lower pressing cover 35 corresponding to the balls 34, a plurality of lower screw holes 36 are circumferentially provided at a lower end of the push-up ring 27, the lower pressing cover 35 is screwed to the corresponding lower screw holes 36, a pressing flange 37 for restricting the corresponding balls 34 to the corresponding lower screw holes 36 is provided at an inner circumference of the lower pressing cover 35, a lower end portion of the balls 34 penetrates the pressing flange 37, and an annular track 38 matched with a bottom of the balls 34 is provided at an upper end of the rotating ring 26. The rolling fit mode is adopted between the rotating ring 26 and the push-up ring 27, so that friction between the rotating ring and the push-up ring is reduced, and the operation is more labor-saving.

As shown in fig. 4, the push-up assembly 25 further includes a plurality of top blocks 39 and a plurality of top covers 40 corresponding to the top blocks 39, a plurality of top screw holes 41 are provided at the upper end of the push-up ring 27, the top covers 40 are screwed onto the top screw holes 41, the top blocks 39 axially penetrate through the corresponding top covers 40, the inner ends of the top blocks 39 are provided with limiting flanges 42 extending outwards to form a travel limit with the top covers 40 when the top blocks 39 go upwards, and a first spring 43 is sandwiched between the inner ends of the top blocks 39 and the inner ends of the corresponding top screw holes 41. The ejector block 39 can axially stretch out and draw back under the effect of the first spring 43, after the push-up ring 27 rises, the ejector block 39 on the push-up ring 27 is propped against the stressed flange 31 of the supporting sleeve 12 first, at the moment, the push-up ring 27 gradually contracts inwards, the positive pressure born by the stressed flange 31 gradually increases until the ejector block 39 completely contracts into the upper screw hole 41, the push-up ring 27 is propped against the stressed flange 31, and the acting force is maximum at the moment, so that the effect of applying a small-to-large acting force to the stressed flange 31 is achieved, the supporting sleeve 12 can be prevented from being damaged easily due to the influence of the instant force, and the supporting sleeve 12 is pushed upwards stably more easily due to the small-to-large force, so that the operation is easier.

As shown in fig. 1, a fan-shaped adjusting port 44 is arranged in the middle of the valve seat 9. The valve seat 9 adopts a fan-shaped adjusting port 44, and a fan-shaped flow adjusting hole designed by computer finite element numerical analysis has the inherent flow characteristics of equal percentage and the accurate adjustable proportion of up to 300:1, thereby meeting the accurate requirement of users.

As shown in fig. 2 and fig. 5, the valve clack 4 is provided with a pressure relief opening 45 along the axial direction, the pressure relief opening 45 is provided with a pressure relief assembly 46, the pressure relief assembly 46 comprises a mounting seat 47, a guide rod 48, a second spring 49 and a limiting seat 50, the mounting seat 47 is in threaded connection with one end of the pressure relief opening 45 far away from the valve seat 9, the mounting seat 47 is provided with an inlet flow passage 51 along the axial direction, the limiting seat 50 is in threaded connection with one end of the inlet flow passage 51 close to the valve seat 9, the guide rod 48 penetrates through the limiting seat 50, the inner end of the guide rod 48 is provided with a piston part 52 extending towards the outer periphery, the outer periphery of the piston part 52 is provided with a first sealing ring 53 which is used for forming sealing fit with the inner wall of the inlet flow passage 51, a limiting step 54 is further arranged in the inlet flow passage 51, the second spring 49 is clamped between the limiting seat 50 and the piston part 52 and presses the limiting step 54, the lower end of the guide rod 48 is provided with an upward extending axial passage 55, the upper end of the axial passage 55 is provided with a plurality of radial passages 56 extending along the radial directions, and when the piston part 52 abuts against the inner wall 54, and the radial end of the limiting seat 50 coincides with the radial inner wall 56. The valve clack 4 is provided with the pressure relief component 46, when the valve is closed, if the upstream internal pressure is abnormally increased, and when the valve exceeds a critical value, the pressure relief component 46 is opened for pressure relief, the upstream pressure is reduced, and serious safety accidents can be avoided.

As shown in fig. 1, the disc valve further comprises a positioner 57 and a connecting rod 58, wherein the positioner is mounted on the bracket 10, one end of the connecting rod 58 is hinged with the positioner 57, and the other end of the connecting rod 58 is hinged with the swing arm 6. The unique connecting rod 58 precisely connects the rotation angle of the positioner 57 with the opening of the disc valve, and the swinging rocker arm 3 of the actuator 5 can be reflected on the positioner 57 in real time when rotating, so that precise control and precise adjustment are realized.

In addition, the disk valve is also provided with a purging port design, and medium particles and dirt are blocked and cannot move due to the severe working condition of the valve, or the rotation torque of the valve clack 4 is increased due to medium scaling. The product has designed special inner chamber and has swept protection architecture, and valve clack 4 and disk seat 9 laminating slip process also have self-cleaning function simultaneously, and granule and filth also can not get into disk seat 9's sealing area.

Claims

1. The utility model provides a high performance regulating disk valve, includes valve body (1), valve rod (2), rocking arm (3), valve clack (4), executor (5) and swing arm (6), upper valve gap (7) and lower valve gap (8) are installed respectively at valve body (1) both ends, valve rod (2) run through upper valve gap (7) and stretch into in valve body (1), one end and the inner linkage of valve rod (2) of rocking arm (3) are connected, the other end and the valve clack (4) linkage of rocking arm (3) are connected, upper valve gap (7) inner is installed and is used for constituting sealing fit's disk seat (9) with valve clack (4), support (10) are installed to upper valve gap (7), the stiff end of executor (5) articulates on support (10), the one end linkage of stretching out of executor (5) is connected with the one end linkage of swing arm (6), the other end and the outer linkage of valve rod (2) are connected. The method is characterized in that: the novel valve is characterized by further comprising a packing sealing mechanism (11), the packing sealing mechanism (11) comprises a supporting sleeve (12), an upper packing (13), a lower packing (14), a packing pressing sleeve (15) and a packing pressing plate (16), a sealing groove (17) coaxial with the valve rod (2) is formed in the upper valve cover (7), the supporting sleeve (12) is arranged in the sealing groove (17), a supporting flange (18) extending towards the inner end of the supporting sleeve (12) is arranged, a sealing cavity (19) is formed between the supporting sleeve (12) and the valve rod (2), the packing pressing plate (16) is connected with the upper valve cover (7), the packing pressing plate (16) is pressed at the upper end of the packing pressing sleeve (15), the packing pressing sleeve (15) presses the upper packing (13) into the sealing cavity (19), the lower packing (14) is pressed at the inner end of the sealing groove (17) by the supporting sleeve (12), and the supporting sleeve (12) is connected with the lower packing (14) in a linkage mode.

2. A high performance regulator disc valve according to claim 1, wherein: the support flange (18) on the support sleeve (12) is connected with the lower packing (14) through a plurality of locking screws (20), and a plurality of grooves (21) for embedding screw heads of the corresponding locking screws (20) are formed in the support flange (18).

3. A high performance regulator disc valve according to claim 2, wherein: an inner sealing ring (22) and an outer sealing ring (23) are clamped between the supporting sleeve (12) and the lower packing (14), the locking screw (20) is arranged between the inner sealing ring (22) and the outer sealing ring (23), and sealing gaskets (24) which are used for propping against the outer ends of screw heads of the locking screw (20) are respectively inserted into the grooves (21).

4. A high performance regulator disc valve according to claim 1, wherein: the packing sealing mechanism (11) further comprises an upward pushing assembly (25), the upward pushing assembly (25) comprises a rotating ring (26) and an upward pushing ring (27), a boss (28) coaxial with the valve rod (2) is arranged on the upper valve cover (7), a light face (29) and a threaded portion (30) are sequentially arranged on the periphery of the boss (28) from top to bottom, the outer diameter of the light face (29) is smaller than that of the threaded portion (30), the rotating ring (26) is in threaded connection with the threaded portion (30), the upward pushing ring (27) is sleeved on the periphery of the light face (29), the bottom of the upward pushing ring (27) abuts against the top of the rotating ring (26), and a stress flange (31) extending towards the outer periphery is arranged at the upper end of the supporting sleeve (12) and is arranged right above the upward pushing ring (27).

5. A high performance regulator disk valve in accordance with claim 4, wherein: a plurality of guide grooves (32) extending along the axial direction are formed in the light surface part (29) along the circumferential direction, and a plurality of guide protrusions (33) matched with the guide grooves (32) are formed in the inner periphery of the push-up ring (27).

6. A high performance regulator disk valve in accordance with claim 4, wherein: the push-up assembly (25) further comprises a plurality of balls (34) and lower pressing covers (35) which are equal to the balls (34) in number, a plurality of lower screw holes (36) are formed in the lower end of the push-up ring (27) along the circumferential direction, the lower pressing covers (35) are in threaded connection with the corresponding lower screw holes (36), pressing flanges (37) for limiting the corresponding balls (34) on the corresponding lower screw holes (36) are arranged on the inner circumference of the lower pressing covers (35), the lower end portions of the balls (34) penetrate through the pressing flanges (37), and annular tracks (38) matched with the bottoms of the balls (34) are formed in the upper ends of the rotating rings (26).

7. A high performance regulator disk valve in accordance with claim 4, wherein: the push-up assembly (25) further comprises a plurality of jacking blocks (39) and a plurality of upper pressing covers (40) which are equal to the jacking blocks (39), a plurality of upper screw holes (41) are formed in the upper end of the push-up ring (27), the upper pressing covers (40) are in threaded connection with the upper screw holes (41), the jacking blocks (39) axially penetrate through the corresponding upper pressing covers (40), limiting flanges (42) which are used for limiting the stroke with the upper pressing covers (40) when the inner ends of the jacking blocks (39) extend outwards are arranged, and first springs (43) are clamped between the inner ends of the jacking blocks (39) and the inner ends of the corresponding upper screw holes (41).

8. A high performance regulator disc valve according to claim 1, wherein: a fan-shaped adjusting opening (44) is arranged in the middle of the valve seat (9).

9. A high performance regulator disc valve according to claim 1, wherein: the valve clack (4) is provided with a pressure relief opening (45) along the axial direction, the pressure relief opening (45) is provided with a pressure relief assembly (46), the pressure relief assembly (46) comprises a mounting seat (47), a guide rod (48), a second spring (49) and a limiting seat (50), the mounting seat (47) is in threaded connection with one end of the pressure relief opening (45) far away from the valve seat (9), the mounting seat (47) is provided with an inlet flow passage (51) along the axial direction, the limiting seat (50) is in threaded connection with one end of the inlet flow passage (51) close to the valve seat (9), the guide rod (48) penetrates through the limiting seat (50), the inner end of the guide rod (48) is provided with a piston part (52) extending towards the periphery, the periphery of the piston part (52) is provided with a first sealing ring (53) which is used for forming sealing fit with the inner wall of the inlet flow passage (51), a limiting step (54) is further arranged in the inlet flow passage (51), the second spring (49) is clamped between the limiting seat (50) and the piston part (52) and presses the piston part (52) towards the upper end of the valve seat (54), the guide rod (48) is provided with a plurality of channels (55) extending towards the axial direction, when the piston part (52) is propped against the limit step (54), the outer end of the radial channel (56) is overlapped with the inner wall of the limit seat (50).

10. A high performance regulator disc valve according to claim 1, wherein: the device also comprises a positioner (57) and a connecting rod (58), wherein the positioning device is arranged on the support (10), one end of the connecting rod (58) is hinged with the positioner (57), and the other end of the connecting rod (58) is hinged with the swing arm (6).