CN115126893A - Hard-seal fixed pneumatic ball valve for high-temperature working condition - Google Patents

Abstract

The invention discloses a hard-seal fixed pneumatic ball valve for high-temperature working conditions, which comprises a valve body, wherein a valve cavity is arranged in the valve body, a sealing mechanism is arranged in the valve cavity, a valve core matched with the sealing mechanism is rotatably arranged in the valve cavity, a valve rod penetrates through the valve body, the end part of the valve rod is fixedly connected with a driving key, a driving groove is formed in the valve core, the driving key is inserted in the driving groove, a connecting groove is formed in one side, away from the valve rod, of the valve core, a pivot shaft is fixedly connected to the valve body, the axial lead of the pivot shaft is overlapped with the axial lead of the valve rod, the pivot shaft is inserted in the connecting groove, and the pivot shaft is rotatably arranged in the connecting groove. This application has the lower part of the reduction valve rod and takes place the deformation possibility, improves valve life's effect.

Description

Hard-seal fixed pneumatic ball valve for high-temperature working condition

Technical Field

The invention relates to the field of pneumatic valves, in particular to a hard seal fixed pneumatic ball valve for high-temperature working conditions.

Background

At present, the pneumatic ball valve is widely applied to industries such as petroleum refining, long-distance pipelines, chemical industry, paper making, electric power, municipal administration, pharmacy, water conservancy, steel and the like, and plays a significant role in national economy. During the opening or closing process of the ball valve, the valve rod is usually pushed by the pneumatic actuator, so that the valve rod makes a rotational motion around the axis of the ball valve, and then the ball valve core is driven to rotate to control the opening and closing of the ball valve, and the valve body is usually fixed on a bracket of the pneumatic actuator.

In the related art, the chinese patent publication No. CN112049960A discloses a novel pneumatic ball valve, which comprises a pneumatic mechanism, a valve seat, a valve rod and a valve ball core, wherein the pneumatic mechanism is installed in the middle of a pipeline and used for adjusting the flow rate of fluid in the pipeline; the both ends of disk seat are provided with the connection end, have seted up the spread groove on the one end inside wall of connection end, still set up the reducing groove that is linked together with the spread groove on the connection end, and reducing inslot is provided with the reducing sealing strip, and the reducing sealing strip is used for changing the internal diameter of connection end link to adapt to the pipeline of different external diameters, still be provided with the staple bolt on the connection end.

To above-mentioned correlation technique, generally through setting up drive key and the drive groove interconnect who sets up on the case in the valve rod lower extreme between valve rod and the case, but in high pressure, high temperature operating mode, the valve rod material softens, the physical properties variation, act on the valve body via the medium, cause huge effort to the ball case, when the effort that the ball case received is great, can lead to the lower part of valve rod to take place to deform, when the lower part of valve rod takes place to deform, the leakproofness of seal structure reduces in ball case and the valve, influence pneumatic ball valve normally to open and close simultaneously, thereby the life of valve has been reduced.

Disclosure of Invention

In order to reduce the valve rod lower part and take place the deformation possibility, improve the life of valve, this application provides a high temperature operating mode is with fixed pneumatic ball valve of hard seal.

The application provides a pair of high temperature operating mode is with fixed pneumatic ball valve of hard seal adopts following technical scheme:

the hard seal fixed pneumatic ball valve comprises a valve body, wherein a valve cavity is arranged in the valve body, a sealing mechanism is arranged in the valve cavity, a valve core matched with the sealing mechanism is arranged in the valve cavity in a rotating mode, a valve rod penetrates through the valve body, a driving key is fixedly connected to the end portion of the valve rod, a driving groove is formed in the valve core, the driving key is inserted into the driving groove, a connecting groove is formed in one side, away from the valve rod, of the valve core, a pivot shaft is fixedly connected to the valve body, the axial lead of the pivot shaft coincides with the axial lead of the valve rod, the pivot shaft is inserted into the connecting groove, and the pivot shaft is rotatably arranged in the connecting groove.

Through adopting above-mentioned technical scheme, the drive key of valve rod bottom is inserted and is located the drive inslot on the case, the spread groove is seted up in the case and is kept away from one side of valve rod, pivot fixedly connected with pivot, the pivot is inserted and is located the spread groove on the case, thereby make the case when receiving the great effort of medium, pivot and valve rod can provide the holding power for the case simultaneously, the thrust that makes the case receive is more balanced, hinder the case and take place the swing in the valve pocket, thereby it takes place deformation to hinder the valve rod lower part, and then reduced the unable normal condition of opening and closing of pneumatic ball valve and taken place, the stability of the sealed effect of case and valve pocket internal seal mechanism has been promoted simultaneously, and the service life of the valve is prolonged.

Preferably, a sewage draining hole is formed in the peripheral surface of the pivot, the sewage draining hole is located in the valve cavity, a communicating hole is formed in the end face, far away from the valve core, of the valve rod, the communicating hole is communicated with the sewage draining hole, and a plugging component used for plugging the communicating hole is detachably connected to the pivot.

By adopting the technical scheme, impurities are usually deposited in the valve cavity in the long-term work of the valve body, the sewage draining hole is formed in the peripheral surface of the pivot and is positioned in the valve cavity, and the communicating hole is communicated with the sewage draining hole, so that the impurities can be discharged from the sewage draining hole and the communicating hole, and the damage of the impurities in the valve cavity to parts in the valve cavity is reduced.

Preferably, a plugging hole is formed in an end face, away from the valve element, of the pivot, the plugging hole is communicated with the communicating hole, the plugging assembly comprises a plug bolt arranged in the plugging hole, and the plug bolt is in threaded connection with the inner peripheral surface of the plugging hole.

Through adopting above-mentioned technical scheme, the shutoff hole is linked together with the intercommunicating pore, and the inner peripheral surface threaded connection in end cap bolt and shutoff hole to the staff of being convenient for realizes opening and the shutoff of intercommunicating pore, and the staff of being convenient for discharges impurity from blowoff hole and intercommunicating pore.

Preferably, a connecting hole is formed in one side, away from the pivot, of the valve body, a lengthening sleeve is fixed in the connecting hole, the valve rod is rotatably arranged in the lengthening sleeve, a groove is formed in the valve core, the connecting groove is formed in the side wall of the groove, and the lengthening sleeve is inserted in the groove.

Through adopting above-mentioned technical scheme, the extension sleeve pipe is fixed in the connecting hole, and the valve rod rotates and sets up in the extension sleeve pipe to in the recess of seting up on locating the case was inserted to the one end of extension sleeve pipe, for the valve rod provides the holding power, further hinders the valve rod and takes place deformation, improved the stability of valve rod.

Preferably, the pivot is located one end fixedly connected with first ring flange in the valve body outside, the extension sleeve is located fixedly connected with the second ring flange on the outer peripheral face in the valve body outside, first ring flange with the second ring flange all through the bolt fastening in on the valve body, one side of valve body is open form, the open side of valve body can be dismantled and be connected with the valve gap.

Through adopting above-mentioned technical scheme, first ring flange and second ring flange all are through the bolt fastening on the valve body, and one side of valve body is open form simultaneously, and the valve gap can be dismantled and connect in the open side of valve body to the staff of being convenient for will be located the case of valve intracavity and take out from the valve intracavity, and the staff of being convenient for maintains and changes the case.

Preferably, the valve body and the valve cover comprise tubular welding parts, the tubular welding parts on the valve body are communicated with the valve cavity, the tubular welding part on the valve cover is also communicated with the valve cavity, connecting pipes are arranged on both sides of the pneumatic ball valve, a correcting device is arranged between the tubular welding part and the connecting pipe, the correcting device comprises two groups of clamping mechanisms and a connecting rod fixed between the two groups of clamping mechanisms, the two groups of clamping mechanisms are respectively arranged on the tubular welding part and the connecting pipe, the clamping mechanisms comprise two arc-shaped plates which are hinged with each other, one ends of the two arc-shaped plates, which are far away from the hinged position, are provided with fastening components which block the two arc-shaped plates from being far away from each other, the axial leads of the arc-shaped plates on the same side in the two groups of clamping mechanisms are coincided with each other, and two ends of the connecting rod are respectively and fixedly connected to the arc-shaped plates in the two groups of clamping mechanisms.

Through adopting above-mentioned technical scheme, in pneumatic ball valve's installation, need to weld tubular weld part and connecting pipe mutually. The both ends of connecting rod are fixed in respectively on the arc of two sets of fixture homonymies, under fastening assembly's fastening action, hinder two arcs and keep away from each other to make two arcs can add stable clamp with tubulose welding part or connecting pipe tight. The axial lead of the arc-shaped plate on the same side in the two groups of clamping mechanisms coincides, so that the tubular welding part clamped by the two groups of clamping mechanisms can coincide with the axial lead of the connecting pipe, the coaxiality of the tubular welding part and the connecting pipe can be conveniently adjusted by a worker, and the installation precision of the pneumatic ball valve is further improved.

Preferably, a plurality of rollers are arranged on the concave surface of the arc-shaped plate, and the rotating axes of the rollers are parallel to the axis direction of the arc-shaped plate.

Through adopting above-mentioned technical scheme, when fastening subassembly was pressed from both sides two arcs and tightly, the gyro wheel all contradicted on the outer peripheral face of tubulose connecting portion or connecting pipe to make correcting unit rotate on tubulose connecting portion and connecting pipe, and then make the staff can adjust the position of connecting rod, reduced the connecting rod and carried out welding process's hindrance to tubulose connecting portion and connecting pipe, the staff of being convenient for welds tubulose connecting portion and connecting pipe mutually.

Preferably, the end of the arc plate far away from the hinge is fixedly connected with a fastening ear plate, the fastening assembly comprises a worm, two fastening ear plates on the same side in the two groups of clamping mechanisms are provided with mounting holes, the worm passes through the two mounting holes and is rotatably arranged on the two fastening ear plates, the side surface of the fastening ear plate where the worm is located is provided with a mounting groove, a threaded rod is inserted in the mounting groove and is rotatably arranged on the fastening ear plates, the inner peripheral wall of the mounting groove is provided with an annular groove, one side of the annular groove is communicated with the mounting holes, the threaded rod is fixedly connected with a worm wheel, the worm is provided with two sections of spiral teeth, the two sections of spiral teeth are respectively meshed with the two worm wheels, the threaded rod passes through the fastening ear plate far away from one side of the worm, and is in threaded connection with the fastening ear plate far away from one side of the worm, an inner hexagonal groove is formed in the end face of the worm.

Through adopting above-mentioned technical scheme, the staff can use instruments such as electric screwdriver to pass through hexagon socket head cap groove drive worm and rotate, and when the worm rotated, two worm wheel rotations can be driven simultaneously to both ends helical tooth on the worm to make two threaded rods rotate in step, because the one end of threaded rod and the fastening ear plate threaded connection who keeps away from the worm place, thereby make the staff can make two sets of fixture press from both sides tubulose weld part and connecting pipe simultaneously and tightly when the drive worm rotated, the staff's of being convenient for operation.

Preferably, four retaining rings are fixedly connected to the worm and respectively abut against two sides of the fastening lug plates.

Through adopting above-mentioned technical scheme, four fender rings contradict respectively on the both sides of two fastening otic placodes to hinder the worm to remove along the axis direction of worm, and then make fastening assembly's structure more stable.

Preferably, be provided with coupling mechanism on the valve body, coupling mechanism includes the side fixed plate, the side fixed plate is located two fixedly connected with on the valve body, two the side fixed plate symmetry set up in the both sides of valve body, fixedly connected with reinforcing plate on the medial surface of side fixed plate, the reinforcing plate is close to one side of valve body with valve body fixed connection, coupling mechanism still include fixed connection in the side fixed plate with the reinforcing plate is kept away from the roof of valve body one end, the roof passes through the bolt fastening on the fixed bolster.

Through adopting above-mentioned technical scheme, the roof passes through the bolt fastening on the fixed bolster, and two side fixing plates constitute the I shape structure with two reinforcing plates, and the roof is connected with side fixing plate and reinforcing plate, and the roof passes through the bolt fastening on the fixed bolster, has promoted the antitorque ability of valve body to when hindering the executor to function, the valve body takes place to remove under the thrust effect of pneumatic actuator, and what messenger's valve body can be more firm is fixed on the support.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the driving key at the bottom end of the valve rod is inserted into the driving groove on the valve core, the connecting groove is formed in one side, far away from the valve rod, of the valve core, the pivot is fixedly connected with the pivot, and the pivot is inserted into the connecting groove on the valve core, so that when the valve core is subjected to a large medium acting force, the pivot and the valve rod can simultaneously provide supporting force for the valve core, the thrust on the valve core is balanced, the valve core is prevented from swinging in the valve cavity, the lower part of the valve rod is prevented from deforming, the situation that the pneumatic ball valve cannot be normally opened and closed is reduced, the stability of the sealing effect of the sealing mechanism in the valve core and the valve cavity is improved, and the service life of the valve is prolonged;

2. during the installation of the pneumatic ball valve, the tubular welding part needs to be welded with the connecting pipe. The both ends of connecting rod are fixed in respectively on the arc of two sets of fixture homonymies, under fastening assembly's fastening action, hinder two arcs and keep away from each other to make two arcs can add stable clamp with tubulose welding part or connecting pipe tight. The axial leads of the arc-shaped plates on the same side in the two groups of clamping mechanisms are overlapped, so that the axial leads of the tubular welding part and the connecting pipe which are clamped by the two groups of clamping mechanisms can be overlapped, the coaxiality of the tubular welding part and the connecting pipe can be conveniently adjusted by a worker, and the installation precision of the pneumatic ball valve is improved;

3. the staff can use instruments such as electric screwdriver to pass through hexagon socket head cap groove drive worm and rotate, and when the worm rotated, two worm wheel rotations can be driven simultaneously to both ends helical tooth on the worm to make two threaded rods rotate in step, because the one end of threaded rod and the fastening otic placode threaded connection who keeps away from the worm place, thereby make the staff can make two sets of fixture press from both sides tubulose weld part and connecting pipe simultaneously tightly when the drive worm rotates, the staff's of being convenient for operation.

Drawings

Fig. 1 is a schematic view of the overall structure of a pneumatic ball valve in the embodiment of the present application.

FIG. 2 is a cross-sectional view of a pneumatic ball valve in an embodiment of the present application.

Fig. 3 is a schematic view of the overall structure of the connection mechanism in the embodiment of the present application.

Fig. 4 is a partially enlarged view of a portion a in fig. 2.

Fig. 5 is a partially enlarged view at B in fig. 2.

Fig. 6 is a partially enlarged view at C in fig. 2.

Fig. 7 is a schematic view of the entire structure of the correcting mechanism in the embodiment of the present application.

Fig. 8 is a cross-sectional view of a fastening lug in an embodiment of the present application.

Description of reference numerals:

1. a valve body; 11. a valve cavity; 12. a tubular weld; 121. welding a groove; 13. connecting holes; 14. a jack; 15. pressing a plate; 16. a spring slot; 2. a valve core; 21. a valve bore; 22. a groove; 221. a drive slot; 23. connecting grooves; 24. a first bearing; 25. a second bearing; 3. a valve stem; 4. lengthening the sleeve; 41. a second flange plate; 42. a drive key; 43. a packing groove; 44. a packing grommet; 45. a filler group; 5. a pivot; 51. a first flange plate; 52. a sewage draining hole; 53. a communicating hole; 54. plugging the hole; 55. a plugging component; 551. a plug bolt; 6. a valve cover; 61. a third flange plate; 7. a sealing mechanism; 71. a graphite gasket; 72. pressing a ring; 73. a valve seat; 731. a first step groove; 732. a second stepped groove; 74. a compression spring; 8. a connecting mechanism; 81. a side fixing plate; 82. a reinforcing plate; 83. a top plate; 831. through the hole; 9. a correcting device; 91. a clamping mechanism; 92. an arc-shaped plate; 93. a roller; 94. a fastening assembly; 941. fastening the ear plate; 9411. mounting holes; 9412. an annular abdicating groove; 9413. mounting grooves; 9414. an annular groove; 942. a worm; 9421. A baffle ring; 9422. An inner hexagonal groove; 9423. helical teeth; 943. a worm gear; 944. a threaded rod; 95. a connecting rod; 100. and (4) connecting the pipes.

Detailed Description

The present application is described in further detail below with reference to figures 1-8.

The embodiment of the application discloses high temperature operating mode is with fixed pneumatic ball valve of hard seal. Referring to fig. 1 and 2, the pneumatic ball valve includes a valve body 1, a valve core 2, a valve stem 3, an extension sleeve 4, a pivot shaft 5, a valve cover 6, a sealing mechanism 7 and a connecting mechanism 8. The valve cavity 11 is arranged in the valve body 1, one side of the valve body 1 is open, the valve cover 6 comprises a third flange plate 61, and the third flange plate 61 is fixed on the valve body 1 through bolts and the valve body 1. The valve core 2 is arranged in the valve cavity 11, a valve hole 21 is horizontally arranged on the valve core 2, and the axis line of the valve hole 21 passes through the center of the valve body 1.

Referring to fig. 2 and 3, the connecting mechanism 8 includes a side fixing plate 81, two reinforcing plates 82 and a top plate 83, the side fixing plate 81 is disposed on the valve body 1, the two side fixing plates 81 are symmetrically fixed on two sides of the valve body 1 through bolts, the two reinforcing plates 82 are disposed two by two, the two reinforcing plates 82 are respectively welded and fixed on the side surfaces of the two side fixing plates 81 close to each other, the two reinforcing plates 82 are both located in the middle of the side fixing plate 81, the bottom of the reinforcing plate 82 is welded and fixed with the valve body 1, the top plate 83 is located at the top of the side fixing plate 81 and the reinforcing plate 82, the top plate 83 is welded and fixed with the two side fixing plates 81 and the two reinforcing plates 82, the top plate 83 is fixed on the fixing bracket through bolts, a 831 through hole is formed in the middle of the top surface of the top plate 83, and the valve rod 3 passes through the through hole 831.

Referring to fig. 2, the valve cover 6 and the valve body 1 both include a tubular welding portion 12, the axes of the tubular welding portion 12 on the valve cover 6 and the valve body 1 coincide, the tubular welding portion 12 is communicated with the valve cavity 11, the tubular welding portion 12 on the valve cover 6 and the third flange 61 are integrally formed, and one end of the tubular welding portion 12, which is far away from the valve body 1, is provided with a welding groove 121.

Referring to fig. 2 and 4, a connecting hole 13 is vertically formed in the top of the valve body 1, the extension sleeve 4 is vertically inserted into the connecting hole 13, a second flange 41 is fixedly connected to the outer peripheral surface of the extension sleeve 4, and the second flange 41 is fixed to the valve body 1 through bolts. The valve rod 3 is inserted into the lengthened sleeve 4, the valve rod 3 is in clearance fit with the lengthened sleeve 4, and a square driving key 42 is fixedly connected to the end face of the bottom of the valve rod 3.

Referring to fig. 2 and 4, a groove 22 is formed in the top of the valve core 2, the cross section of the groove 22 is circular, a driving groove 221 is formed in the inner wall of the bottom of the groove 22, the cross section of the driving groove 221 is square, the extension sleeve 4 is inserted into the groove 22, a first bearing 24 is arranged between the outer circumferential surface of the extension sleeve 4 and the inner circumferential wall of the groove 22, and the driving key 42 is inserted into the driving groove 221.

Referring to fig. 2, a packing groove 43 is formed in the top of the inner circumferential wall of the extension sleeve 4, a packing backing ring 44 and a packing group 45 are arranged in the packing groove 43, a pressing plate 15 is arranged above the extension sleeve 4, the pressing plate 15 is fixed with the extension sleeve 4 through bolts, and when the bolts on the pressing plate 15 are fastened, the packing group 45 and the packing backing ring 44 are pressed tightly.

Referring to fig. 2 and 5, an insertion hole 14 is formed in one side of the valve body 1 away from the valve rod 3, the pivot 5 is inserted into the insertion hole 14, and the axis of the pivot 5 coincides with the axis of the valve rod 3. One end of the pivot 5, which is positioned at the outer side of the valve body 1, is fixedly connected with a first flange 51, and the first flange is fixed on the valve body 1 through bolts. The valve body 1 is fixedly connected with a pivot shaft 5, the axis of the pivot shaft 5 coincides with the axis of the valve rod 3, one side of the valve core 2, which is far away from the valve rod 3, is provided with a connecting groove 23, the cross section of the connecting groove 23 is circular, the top end of the pivot shaft 5 is inserted into the connecting groove 23, and a second bearing 25 is arranged between the outer peripheral surface of the pivot shaft 5 and the inner peripheral wall of the connecting groove 23.

Referring to fig. 2 and 5, a dirt discharge hole 52 is horizontally formed on the outer peripheral surface of the pivot 5, the dirt discharge hole 52 is located in the valve chamber 11, a communication hole 53 is formed on the end surface of the valve rod 3 away from the valve core 2, and the communication hole 53 is communicated with the dirt discharge hole 52. The end surface of the pivot 5 far away from the valve core 2 is provided with a blocking hole 54, the blocking hole 54 is communicated with the communicating hole 53, and the axial lead of the blocking hole 54 is superposed with the axial lead of the communicating hole 53. The plugging assembly 55 is arranged in the plugging hole 54, the plugging assembly 55 comprises a plug bolt 551, the plug bolt 551 is arranged in the plugging hole 54, and the plug bolt 551 is in threaded connection with the inner peripheral surface of the plugging hole 54.

Referring to fig. 2 and 6, two sets of sealing mechanisms 7 are arranged in the pneumatic ball valve, the two sets of sealing mechanisms 7 are respectively arranged on the inner side of the valve cap 6 and one side of the valve cavity 11 away from the valve cap 6, and each sealing mechanism 7 comprises a graphite gasket 71, a pressing ring 72, a valve seat 73 and a compression spring 74. Four spring grooves 16 are respectively formed in the inner wall of the valve cavity 11 and the inner wall of the valve cover 6, and the four spring grooves 16 are symmetrically arranged along the circumferential direction of the tubular welding portion 12. Eight compression springs 74 are provided, eight compression springs 74 being located in eight spring pockets 16.

Referring to fig. 2 and 6, the valve seat 73 is annular, one side of the valve seat 73 close to the valve element 2 abuts against the valve element 2, one side of the valve seat 73 far away from the valve element 2 is provided with a first step groove 731, one side of the outer circumferential surface of the first step groove 731 far away from the valve element 2 is provided with a second step groove 732, and the vertical side wall of the first step groove 731 abuts against the inner wall of the valve chamber 11. The graphite gasket 71 and the pressing ring 72 are sleeved at one end, far away from the valve core 2, of the valve seat 73, the graphite gasket 71 is abutted against the vertical side wall of the second stepped groove 732, the pressing ring 72 is abutted against one side, far away from the valve core 2, of the graphite gasket 71, and one end, close to the valve core 2, of the compression spring 74 is abutted against the pressing ring 72.

Referring to fig. 1 and 7, the pneumatic ball valve is provided with connecting pipes 100 at both sides thereof, a welding groove 121 is also formed at one end of the connecting pipe 100 close to the pneumatic ball valve, and a calibration device 9 is provided between the tubular welding part 12 and the connecting pipe 100.

Referring to fig. 7 and 8, the correcting device 9 includes two sets of clamping mechanisms 91 and connecting rods 95, the clamping mechanisms 91 include two arc-shaped plates 92, rollers 93, and fastening assemblies 94, and the fastening assemblies 94 include fastening ear plates 941, worms 942, worm wheels 943, and threaded rods 944.

Referring to fig. 1 and 7, two sets of clamping mechanisms 91 are respectively disposed on the tubular welding portion 12 and the connecting pipe 100, and the top ends of the two arc-shaped plates 92 in the same set of clamping mechanisms 91 are hinged to each other. The axes of the arc plates 92 on the same side of the two groups of clamping mechanisms 91 are coincident. The axial leads of the tubular welding part 12 clamped by the two groups of clamping mechanisms 91 and the connecting pipe 100 can be superposed, so that the coaxiality of the tubular welding part 12 and the connecting pipe 100 can be conveniently adjusted by a worker, and the installation precision of the pneumatic ball valve is further improved.

Referring to fig. 7 and 8, the fastening ear plates 941 correspond to the arc-shaped plates 92 one by one, and the fastening ear plates 941 are welded and fixed to the bottom ends of the arc-shaped rods. Connecting rod 95 is located two sets of two arcs 92 that add and hold the subassembly homonymy between set up parallel arrangement three, and on two arcs 92 of welded fastening respectively at connecting rod 95's both ends, connecting rod 95 followed the circumferencial direction evenly distributed of arc 92 in the upper portion of arc 92.

Referring to fig. 1, 7 and 8, a plurality of rollers 93 are disposed on the concave surface of the arc-shaped plate 92, in this embodiment, the number of the rollers 93 disposed on the concave surface of each arc-shaped plate 92 may be ten, ten rollers 93 on each arc-shaped plate 92 are symmetrically divided into two vertical rows, each row of rollers 93 is symmetrically distributed along the circumferential direction of the arc-shaped plate 92, and the rotation axis of each roller 93 is parallel to the axial direction of the arc-shaped plate 92. When the arc plates 92 approach each other, the roller 93 abuts on the outer peripheral surfaces of the tubular welding portion 12 and the connection pipe 100. The calibration device 9 can rotate on the tubular welding part 12 and the connecting pipe 100, so that the worker can adjust the position of the connecting rod 95, and the obstruction of the connecting rod 95 to the welding process of the tubular connecting part and the connecting pipe 100 is reduced.

Referring to fig. 7 and 8, in the two sets of clamping mechanisms 91, two fastening ear plates 941 on the same side have mounting holes 9411, a circular abdicating groove 9412 has been opened on the circumferential surface of the mounting hole 9411, the worm 942 passes through the two mounting holes 9411 and is rotatably disposed on the two fastening ear plates 941, four retaining rings 9421 are fixedly connected to the worm 942, and the four retaining rings 9421 respectively abut against two sides of the two fastening ear plates 941 to prevent the worm 942 from moving along the axial direction of the worm 942.

Referring to fig. 7 and 8, a mounting groove 9413 is disposed on a side surface of a fastening ear plate 941 where a worm 942 is located, a longitudinal section of the mounting groove 9413 is circular, a threaded rod 944 is inserted into the mounting groove 9413, the threaded rod 944 is rotatably disposed on the fastening ear plate 941, an annular groove 9414 is disposed on an inner peripheral wall of the mounting groove 9413, one side of the annular groove 9414 is communicated with an annular abdicating groove 9412, and a worm wheel 943 is fixedly connected to the threaded rod 944. The worm 942 is provided with two sections of spiral teeth 9423, the spiral teeth 9423 are positioned in the annular abdicating groove 9412, the two sections of spiral teeth 9423 are respectively meshed with the two worm wheels 943, the threaded rod 944 penetrates through the fastening lug plate 941 on one side far away from the worm 942, the threaded rod 944 is in threaded connection with the fastening lug plate 941 on one side far away from the worm 942, and the end face of the worm 942 far away from the valve body 1 is provided with an inner hexagonal groove 9422.

The implementation principle of the hard seal fixed pneumatic ball valve for the high-temperature working condition is as follows: when the valve core 2 is under a large acting force of a medium, the pivot 5 and the valve rod 3 can provide supporting force for the valve core 2 at the same time, so that the thrust borne by the valve core 2 is more balanced, the valve core 2 is prevented from swinging in the valve cavity 11, meanwhile, the valve rod 3 is rotatably arranged in the lengthened sleeve 4, one end of the lengthened sleeve 4 is inserted into the groove 22 formed in the valve core 2, the supporting force is provided for the valve rod 3, deformation of the lower part of the valve rod 3 is prevented, the situation that the pneumatic ball valve cannot be normally opened and closed is further reduced, the stability of the sealing effect of the sealing mechanism 7 in the valve core 2 and the valve cavity 11 is improved, and the service life of the valve is prolonged.

The top plate 83 is fixed on the fixing support through bolts, the two side fixing plates 81 and the two reinforcing plates 82 form an I-shaped structure, the top plate 83 is connected with the side fixing plates 81 and the reinforcing plates 82, the top plate 83 is fixed on the fixing support through bolts, the torsion resistance of the valve body 1 is improved, and therefore when the actuator is blocked to operate, the valve body 1 moves under the thrust action of the pneumatic actuator, and the valve body 1 can be fixed on the support more stably.

The worker can use a tool such as an electric screwdriver to drive the worm 942 through the hexagon socket 9422, when the worm 942 rotates, the two worm wheels 943 can be driven to rotate by the two helical teeth 9423 on the worm 942 at the same time, so that the two threaded rods 944 rotate synchronously, and since one end of the threaded rod 944 is screwed to the fastening ear plate 941 far away from the worm 942, the worker can clamp the tubular welding portion 12 and the connecting pipe 100 by two sets of clamping mechanisms 91 at the same time when the worm 942 is driven to rotate. When the fastening assembly 94 clamps the two arc-shaped plates 92, the rollers 93 are all abutted on the outer peripheral surface of the tubular connecting portion or the connecting pipe 100, so that the correcting device 9 can rotate on the tubular connecting portion and the connecting pipe 100, and further, the position of the connecting rod 95 can be adjusted by a worker, the obstruction of the connecting rod 95 to the welding process of the tubular connecting portion and the connecting pipe 100 is reduced, and the worker can weld the tubular connecting portion and the connecting pipe 100 conveniently.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (10)

1. The utility model provides a high temperature operating mode is with fixed pneumatic ball valve sealed firmly, includes valve body (1), be provided with valve pocket (11) in valve body (1), be provided with sealing mechanism (7) in valve pocket (11), valve pocket (11) internal rotation is provided with case (2) with sealing mechanism (7) matched with, wear to be equipped with valve rod (3) on valve body (1), the tip fixedly connected with drive key (42) of valve rod (3), drive groove (221) have been seted up on case (2), drive key (42) are inserted and are located in drive groove (221), its characterized in that: the valve is characterized in that a connecting groove (23) is formed in one side, far away from the valve rod (3), of the valve core (2), a pivot (5) is fixedly connected to the valve body (1), the axis of the pivot (5) is overlapped with the axis of the valve rod (3), the pivot (5) is inserted into the connecting groove (23), and the pivot (5) is rotatably arranged in the connecting groove (23).

2. The hard seal fixed pneumatic ball valve for the high-temperature working condition as claimed in claim 1, wherein: the valve comprises a valve cavity (11), a valve rod (3) and a pivot (5), wherein a sewage discharge hole (52) is formed in the outer peripheral surface of the pivot (5), the sewage discharge hole (52) is located in the valve cavity (11), a communication hole (53) is formed in the end surface, away from the valve core (2), of the valve rod (3), the communication hole (53) is communicated with the sewage discharge hole (52), and a plugging component (55) used for plugging the communication hole (53) is detachably connected to the pivot (5).

3. The hard seal fixed pneumatic ball valve for the high-temperature working condition according to claim 2, characterized in that: the end face, far away from the valve core (2), of the pivot (5) is provided with a blocking hole (54), the blocking hole (54) is communicated with the communication hole (53), the blocking assembly (55) comprises a plug bolt (551) arranged in the blocking hole (54), and the inner peripheral face of the plug bolt (551) is in threaded connection with the inner peripheral face of the blocking hole (54).

4. The hard seal fixed pneumatic ball valve for the high-temperature working condition according to claim 1, characterized in that: one side, far away from the pivot (5), of the valve body (1) is provided with a connecting hole (13), a lengthening sleeve (4) is fixed in the connecting hole (13), the valve rod (3) is rotatably arranged in the lengthening sleeve (4), the valve core (2) is provided with a groove (22), the connecting groove (23) is formed in the side wall of the groove (22), and the lengthening sleeve (4) is inserted in the groove (22).

5. The hard seal fixed pneumatic ball valve for the high-temperature working condition according to claim 4, is characterized in that: pivot (5) are located the first ring flange of one end fixedly connected with (51) in valve body (1) outside, extension sleeve (4) are located fixedly connected with second ring flange (41) on the outer peripheral face in valve body (1) outside, first ring flange (51) with second ring flange (41) all are through the bolt fastening in on valve body (1), one side of valve body (1) is open form, open side of valve body (1) can be dismantled and be connected with valve gap (6).

6. The hard seal fixed pneumatic ball valve for the high-temperature working condition according to claim 5, characterized in that: the valve body (1) and including tubulose welding part (12) on valve gap (6), on valve body (1) tubulose welding part (12) with valve chamber (11) are linked together, on valve gap (6) tubulose welding part (12) also with valve chamber (11) are linked together, and pneumatic ball valve's both sides all are provided with connecting pipe (100), be provided with correcting unit (9) between tubulose welding part (12) and connecting pipe (100), correcting unit (9) include two sets of fixture (91) and be fixed in two sets of connecting rod (95) between fixture (91), two sets of fixture (91) set up respectively in tubulose welding part (12) with on connecting pipe (100), fixture (91) include two articulated arc plates (92) each other, two arc plates (92) keep away from the one end of articulated department and be provided with and hinder the arc plates (92) fastening assembly(s) that keep away from each other two arc plates (92) 94) The axial leads of the arc-shaped plates (92) on the same side in the two groups of clamping mechanisms (91) are overlapped, and two ends of the connecting rod (95) are respectively and fixedly connected to the arc-shaped plates (92) in the two groups of clamping mechanisms (91).

7. The hard seal fixed pneumatic ball valve for the high-temperature working condition according to claim 6, characterized in that: a plurality of rollers (93) are arranged on the concave surface of the arc-shaped plate (92), and the rotating axis of each roller (93) is parallel to the axis direction of the arc-shaped plate (92).

8. The hard seal fixed pneumatic ball valve for the high-temperature working condition according to claim 7, characterized in that: the equal fixedly connected with fastening otic placode (941) of one end of articulated department is kept away from to arc (92), fastening components (94) include worm (942), two sets of in fixture (91) homonymy two mounting hole (9411) have all been seted up on fastening otic placode (941), worm (942) pass two mounting hole (9411) and rotate and set up in two on fastening otic placode (941), worm (942) place be equipped with mounting groove (9413) on the side of fastening otic placode (941), the mounting groove (9413) interpolation is equipped with threaded rod (944), threaded rod (944) rotate set up in on fastening otic placode (941), annular groove (9414) have been seted up on the internal perisporium of mounting groove (9413), one side of annular groove (9414) with mounting hole (9411) is linked together, fixedly connected with worm wheel (944 943) on threaded rod (941), be provided with two sections helical tooth (9423) on worm (942), two sections helical tooth (9423) respectively with two worm wheel (943) mesh mutually, threaded rod (944) passes and keeps away from worm (942) one side fastening otic placode (941), threaded rod (944) with keep away from worm (942) one side fastening otic placode (941) threaded connection, interior hexagonal groove (9422) have been seted up on the terminal surface of worm (942).

9. The hard seal fixed pneumatic ball valve for the high-temperature working condition according to claim 8, characterized in that: four retaining rings (9421) are fixedly connected to the worm (942), and the retaining rings (9421) respectively abut against two sides of the fastening ear plates (941).

10. The hard seal fixed pneumatic ball valve for the high-temperature working condition as claimed in claim 1, wherein: be provided with coupling mechanism (8) on valve body (1), coupling mechanism (8) include side fixed plate (81), side fixed plate (81) are located fixedly connected with is two on valve body (1) side fixed plate (81) symmetry set up in the both sides of valve body (1), fixedly connected with reinforcing plate (82) on the medial surface of side fixed plate (81), reinforcing plate (82) are close to one side of valve body (1) with valve body (1) fixed connection, coupling mechanism (8) still include fixed connection in side fixed plate (81) with reinforcing plate (82) are kept away from roof (83) of valve body (1) one end, roof (83) are through the bolt fastening on the fixed bolster.

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