CN215257950U

CN215257950U - Anti-loose high-stability ball valve

Info

Publication number: CN215257950U
Application number: CN202121369862.3U
Authority: CN
Inventors: 池百好
Original assignee: Zhejiang Fabian Automatic Control Equipment Co ltd
Current assignee: Zhejiang Fabian Automatic Control Equipment Co ltd
Priority date: 2021-06-19
Filing date: 2021-06-19
Publication date: 2021-12-21
Anticipated expiration: 2031-06-19

Abstract

The utility model discloses a locking type high stable ball valve, including the midbody, two side valve bodies, the valve gap, a support, the transmission case, the valve rod, hand wheel and spheroid, two side valve bodies are installed in the midbody both sides through the bolt respectively, the bottom of valve gap is connected with midbody upper portion, the valve rod runs through valve gap and midbody in proper order, the top of valve rod is connected with the output shaft of transmission case, the input shaft of transmission case is connected with the hand wheel, the bottom of valve rod is connected with the spheroid that sets up in the midbody, be equipped with one respectively in two side valve bodies and be used for constituting the valve seat of sealed fit with the spheroid; the inner periphery of the valve cover is provided with a sealing cavity, the outer periphery of the valve rod is sequentially sleeved with a pressing plate, a pressing sleeve and a filler from top to bottom, and the inner wall of the filler is tightly attached to the outer wall of the valve rod; the valve rod is turned with a thread part, and the thread part is connected with a locking nut in a threaded manner. The utility model discloses can promote the steadiness of valve rod installation, avoid the valve rod not hard up to make the spheroid take place not hard up to prevent the emergence of medium leakage.

Description

Anti-loose high-stability ball valve

Technical Field

The utility model relates to the technical field of valves, especially, relate to a locking type high stable ball valve.

Background

In China, the ball valve is widely applied to industries such as petroleum refining, long-distance pipelines, chemical industry, papermaking, pharmacy, water conservancy, electric power, municipal administration, steel and the like, the ball valve is completely spherical at an inlet and an outlet so as to cut off the flow, the ball valve is mainly used for cutting off, distributing and changing the flow direction of a medium, and the ball valve can be closed tightly only by rotating 90 degrees and by a small rotating torque. When current ball valve is using, it is when the in-service use of current ball valve, still has more shortcoming, if the valve rod does not have fixed knot structure in the valve body, longer back when equipment live time, the valve rod can become flexible to make the spheroid produce and become flexible, cause the medium to leak.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a locking type high stable ball valve, the utility model discloses can promote the steadiness of valve rod installation, avoid the valve rod not hard up to make the spheroid take place not hard up to prevent the emergence of medium leakage.

In order to achieve the above object, the utility model provides a following technical scheme: the anti-loosening high-stability ball valve comprises a middle body, two side valve bodies, a valve cover, a support, a transmission case, a valve rod, a hand wheel and a ball body, wherein the two side valve bodies are respectively installed on two sides of the middle body through bolts; the inner periphery of the valve cover is provided with a sealing cavity, the outer periphery of the valve rod is sequentially sleeved with a pressing plate, a pressing sleeve and filler from top to bottom, the inner wall of the filler is tightly attached to the outer wall of the valve rod, the pressing plate is connected with the valve cover through a fixing bolt, and when the fixing bolt is screwed, the pressing plate presses on the pressing sleeve to enable the pressing sleeve to tightly press the filler in the sealing cavity; the valve rod is turned with a thread part, the thread part is connected with a locking nut in a threaded mode, and the bottom end of the locking nut abuts against the upper end face of the pressing plate.

Through adopting the above technical scheme, set up the filler in the sealed chamber of valve gap inner periphery, when the fixing bolt screws, the clamp plate is pressed on the pressure sleeve, make and press the cover to compress tightly the filler in sealed chamber, it plays sealed effect to pack, and simultaneously, set up screw thread portion at the valve rod, connect lock nut soon on this screw thread portion, and lock nut's bottom supports on the up end of clamp plate, a locking mechanism has been increased to the clamp plate, thereby the steadiness of valve rod and clamp plate installation has been improved, can avoid the valve rod not hard up to make the spheroid take place not hard up, thereby prevent the emergence of medium leakage.

The utility model discloses further set up to, the position that lies in the filler below in the sealed chamber is provided with antifriction bearing.

Through adopting above-mentioned technical scheme, friction when can reducing the valve rod rotation has reduced the operating torque.

The utility model discloses further set up to, the position that lies in the filler top in the sealed chamber is provided with first dish spring.

Through adopting above-mentioned technical scheme, first dish spring provides certain pretightning force for packing, when the valve rod rotates when producing wearing and tearing to packing, first dish spring kick-backs and provides certain pressure for packing, makes the packing toward both sides arch deformation, has improved the sealing performance who packs.

The utility model discloses further set up to, fixing bolt includes double-screw bolt and nut, the bottom screw in valve gap of double-screw bolt, the top of double-screw bolt run through the clamp plate to nut threaded connection is in the top of double-screw bolt.

Through adopting above-mentioned technical scheme, can realize the high-speed joint of clamp plate and valve gap.

The utility model discloses further set up to, the packing adopts the graphite material.

By adopting the technical scheme, the graphite packing has the advantages of high temperature resistance, low temperature resistance, corrosion resistance and low friction coefficient, and is very suitable for serving as a sealing structure of a valve.

The utility model discloses further set up to, be provided with the support ring along circumference on the disk seat, be provided with first step along circumference on the side valve body, seted up the spring groove on the first step, be equipped with compression spring in the spring groove, compression spring's both ends offset with the inner in spring groove and the outer end of support ring respectively.

Through adopting above-mentioned technical scheme, compression spring can play displacement compensation's effect to the disk seat, even disk seat wearing and tearing, compression spring also can compress tightly the disk seat on the spheroid, guarantees the sealing performance between disk seat and the spheroid.

The utility model discloses further set up to, press from both sides between support ring and the compression spring who corresponds and be equipped with the elastic support pad.

Through adopting above-mentioned technical scheme, the effect of protection support ring can be played to the elastic support pad, avoids the support ring to be leaded to life to reduce by the spring fish tail.

The utility model discloses further set up to, be located to be equipped with in the disk seat of import runner and filter the piece, filter the piece including filtering the frame, filter frame threaded connection on the disk seat inner wall, filter the frame middle part and be equipped with the overflow mouth, install the filter cloth in the overflow mouth.

Through adopting above-mentioned technical scheme, large granule impurity in can the filter medium avoids large granule impurity to lead to the fact wearing and tearing and reduce the life of valve to the spheroid.

The utility model discloses further set up to, the outer end that is arranged in the disk seat of import runner is equipped with and is used for constituting spacing portion to the filter stand to be equipped with elasticity anticreep ring on the interior terminal surface of spacing portion.

Through adopting above-mentioned technical scheme, elasticity anticreep ring can play locking effect to filtering the frame, and then promotes the steadiness of filtering the installation of frame.

The utility model discloses further set up to, annular joint groove has been seted up on the inner wall of overflow mouth, the edge part position of filter cloth inlays and establishes in annular joint groove to the edge part of filter cloth is connected with the filter frame through the screw.

Through adopting above-mentioned technical scheme, can realize the quick installation of filter cloth, and enable the filter cloth and wrap whole mouth that overflows, guarantee that the filter cloth can filter comprehensively.

The utility model discloses further set up to, filter the interior terminal surface of frame and be provided with a plurality of push rod portions along circumference.

Through adopting above-mentioned technical scheme, made things convenient for greatly to carry out the rotation operation to filtering frame.

The utility model is further arranged in that a pair of supporting plates are symmetrically arranged between the two side valve bodies, a first positioning hole is respectively arranged on both sides of each supporting plate, a second positioning hole which is coaxial with the corresponding first positioning hole is arranged on each side valve body, and a positioning column is inserted into each first positioning hole and the corresponding second positioning hole; the through hole has been seted up at the backup pad middle part, spheroid upper and lower both ends are equipped with one respectively and rotate the convex part, it rotates to rotate the convex part and sets up in the corresponding through hole.

Through adopting above-mentioned technical scheme, two backup pads can play the effect of support and direction to the spheroid, stability when promoting the spheroid rotation to reduce the wearing and tearing of spheroid.

Drawings

Fig. 1 is a schematic overall structure diagram of the present invention;

FIG. 2 is an enlarged view of portion A of FIG. 1;

fig. 3 is a schematic structural diagram of the filter of the present invention.

In the figure: 1. a middle body; 2. a side valve body; 3. a valve cover; 4. a support; 5. a transmission case; 6. a valve stem; 7. a hand wheel; 8. a sphere; 9. an inlet flow channel; 10. an outlet flow passage; 11. a valve seat; 12. sealing the cavity; 13. pressing a plate; 14. pressing the sleeve; 15. a first disc spring; 16. a filler; 17. a rolling bearing; 18. fixing the bolt; 19. a stud; 20. a nut; 21. a threaded portion; 22. a support ring; 23. a first step; 24. a spring slot; 25. a compression spring; 26. an elastic support pad; 27. a filter member; 28. a filter frame; 29. a flow-through port; 30. filtering cloth; 31. a limiting part; 32. an elastic anti-drop ring; 33. an annular clamping groove; 34. a screw; 35. a push rod part; 36. locking the nut; 37. a support plate; 38. a first positioning hole; 39. a second positioning hole; 40. a positioning column; 41. a via hole; 42. the boss is rotated.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example (b): the utility model provides a locking type high stable ball valve, as shown in the attached figures 1-3, comprising a middle body 1, two side valve bodies 2, a valve cover 3, a bracket 4, a transmission case 5, a valve rod 6, a hand wheel 7 and a ball body 8, wherein the two side valve bodies 2 are respectively arranged at two sides of the middle body 1 through bolts, an inlet flow passage 9 and an outlet flow passage 10 are respectively arranged in the two side valve bodies 2, the transmission case 5, the bracket 4 and the valve cover 3 are sequentially connected through bolts from top to bottom, the bottom of the valve cover 3 is connected with the upper part of the middle body 1 through screws, the valve rod 6 sequentially penetrates through the valve cover 3 and the middle body 1, the top end of the valve rod 6 is connected with an output shaft of the transmission case 5, an input shaft of the transmission case 5 is connected with the hand wheel 7, the bottom end of the valve rod 6 is connected with the ball body 8 arranged in the middle body 1, a valve seat 11 which is in sealing fit with the ball body 8 is respectively arranged in the two side valve bodies 2, a sealing ring is clamped between the valve seat 11 and the inner wall of the corresponding side valve body 2; the inner periphery of the valve cover 3 is provided with a sealing cavity 12, the periphery of the valve rod 6 is sequentially sleeved with a pressing plate 13, a pressing sleeve 14 and a filler 16 from top to bottom, the inner wall of the filler 16 is tightly attached to the outer wall of the valve rod 6, the pressing plate 13 is connected with the valve cover 3 through a fixing bolt 18, and when the fixing bolt 18 is screwed, the pressing plate 13 presses the pressing sleeve 14 to enable the pressing sleeve 14 to tightly press the filler 16 in the sealing cavity 12. The packing 16 plays a role in sealing, meanwhile, the valve rod 6 is provided with a thread part 21, the locking nut 36 is screwed on the thread part 21, the bottom end of the locking nut 36 is abutted on the upper end face of the pressing plate 13, a heavy locking mechanism is added on the pressing plate 13, the installation stability of the valve rod 6 and the pressing plate 13 is improved, the valve rod 6 can be prevented from loosening, the ball 8 is enabled to be loosened, and the medium leakage is prevented.

As shown in fig. 1, a rolling bearing 17 is disposed in the seal chamber 12 below the packing 16. This design can reduce friction when the valve rod 6 rotates, reducing the operating torque.

As shown in fig. 1, a first disc spring 15 is disposed in the sealed chamber 12 above the packing 16. The first disc spring 15 provides a certain pretightening force for the packing 16, and when the valve rod 6 rotates to wear the packing 16, the first disc spring 15 rebounds to provide a certain pressure for the packing 16, so that the packing 16 is enabled to be convexly deformed towards two sides, and the sealing performance of the packing 16 is improved.

As shown in fig. 1, the fixing bolt 18 includes a stud 19 and a nut 20, a bottom end of the stud 19 is screwed into the bonnet 3, a top end of the stud 19 penetrates through the pressure plate 13, and the nut 20 is screwed on a top end of the stud 19. This design enables a quick connection of the pressure plate 13 with the valve cover 3.

Wherein, the filler 16 is made of graphite. The graphite packing 16 has the advantages of high temperature resistance, low temperature resistance, corrosion resistance and low friction coefficient, and is very suitable for being used as a sealing structure of a valve.

As shown in fig. 2, a support ring 22 is circumferentially disposed on the valve seat 11, the support ring 22 and the valve seat 11 are integrated, a first step 23 is circumferentially disposed on the side valve body 2, a spring groove 24 is formed in the first step 23, a compression spring 25 is disposed in the spring groove 24, and two ends of the compression spring 25 respectively abut against an inner end of the spring groove 24 and an outer end of the support ring 22. The compression spring 25 can perform a displacement compensation effect on the valve seat 11, and even if the valve seat 11 is worn, the compression spring 25 can also press the valve seat 11 on the ball 8, so that the sealing performance between the valve seat 11 and the ball 8 is ensured.

As shown in fig. 2, an elastic supporting pad 26 is interposed between the supporting ring 22 and the corresponding compression spring 25, and the elastic supporting pad 26 is made of rubber. The elastic supporting pad 26 can protect the supporting ring 22, and prevent the supporting ring 22 from being scratched by the spring, which results in a reduction in service life.

As shown in fig. 1 and 3, a filter member 27 is disposed in the valve seat 11 in the inlet flow passage 9, the filter member 27 includes a filter frame 28, the filter frame 28 is screwed on the inner wall of the valve seat 11, an overflow port 29 is disposed in the middle of the filter frame 28, and a filter cloth 30 is disposed in the overflow port 29. This design can the large granule impurity in the filter medium, avoids large granule impurity to lead to the fact wearing and tearing and reduce the life of valve to spheroid 8.

As shown in fig. 3, a limiting portion 31 for limiting the filter frame 28 is disposed at an outer end of the valve seat 11 in the inlet flow passage 9, and an elastic anti-drop ring 32 is disposed on an inner end surface of the limiting portion 31, and the elastic anti-drop ring 32 is made of rubber. The elastic anti-drop ring 32 can play a role in preventing looseness of the filter frame 28, and further improves the installation stability of the filter frame 28.

As shown in fig. 3, an annular clamping groove 33 is formed in an inner wall of the overflow port 29, an edge portion of the filter cloth 30 is embedded in the annular clamping groove 33, the edge portion of the filter cloth 30 is connected to the filter frame 28 through a screw 34, specifically, the filter frame 28 has a screw hole for screwing the screw 34, and the filter cloth 30 has a through hole for the screw 34 to pass through. The design can realize the quick installation of the filter cloth 30, and the filter cloth 30 can wrap the whole overflowing opening 29, thereby ensuring that the filter cloth 30 can filter comprehensively.

As shown in fig. 3, the filter frame 28 is provided with a plurality of push rod portions 35 on the inner end surface along the circumferential direction, which greatly facilitates the rotation operation of the filter frame 28.

As shown in fig. 1, a pair of support plates 37 are symmetrically disposed between two side valve bodies 2, two sides of each support plate 37 are respectively provided with a first positioning hole 38, the side valve body 2 is provided with a second positioning hole 39 coaxial with the corresponding first positioning hole 38, and positioning posts 40 are inserted into the first positioning hole 38 and the corresponding second positioning hole 39; a through hole 41 is formed in the middle of the supporting plate 37, a rotating protrusion 42 is respectively arranged at the upper end and the lower end of the sphere 8, and the rotating protrusion 42 is rotatably arranged in the corresponding through hole 41. The two supporting plates 37 can support and guide the ball 8, so that the stability of the ball 8 in rotation is improved, and the abrasion of the ball 8 is reduced.

Claims

1. Anti-loosening high-stability ball valve, which comprises a middle body (1), two side valve bodies (2), a valve cover (3), a support (4), a transmission case (5), a valve rod (6), a hand wheel (7) and a ball body (8), wherein the two side valve bodies (2) are respectively installed on two sides of the middle body (1) through bolts, an inlet flow passage (9) and an outlet flow passage (10) are respectively arranged in the two side valve bodies (2), the transmission case (5), the support (4) and the valve cover (3) are sequentially connected from top to bottom, the bottom of the valve cover (3) is connected with the upper part of the middle body (1), the valve rod (6) sequentially penetrates through the valve cover (3) and the middle body (1), the top end of the valve rod (6) is connected with an output shaft of the transmission case (5), an input shaft of the transmission case (5) is connected with the hand wheel (7), the bottom end of the valve rod (6) is connected with the ball body (8) arranged inside the middle body (1), a valve seat (11) which is used for forming sealing fit with the ball body (8) is respectively arranged in the two side valve bodies (2); the method is characterized in that: the inner periphery of the valve cover (3) is provided with a sealing cavity (12), the periphery of the valve rod (6) is sequentially sleeved with a pressing plate (13), a pressing sleeve (14) and a filler (16) from top to bottom, the inner wall of the filler (16) is tightly attached to the outer wall of the valve rod (6), the pressing plate (13) is connected with the valve cover (3) through a fixing bolt (18), and when the fixing bolt (18) is screwed, the pressing plate (13) presses the pressing sleeve (14) to enable the pressing sleeve (14) to press the filler (16) in the sealing cavity (12); the valve rod (6) is turned with a thread part (21), the thread part (21) is connected with a locking nut (36) in a threaded mode, and the bottom end of the locking nut (36) abuts against the upper end face of the pressing plate (13).

2. The anti-loose high-stability ball valve according to claim 1, wherein: and a rolling bearing (17) is arranged in the sealing cavity (12) below the filler (16).

3. The anti-loose high-stability ball valve according to claim 1, wherein: and a first disc spring (15) is arranged in the sealing cavity (12) above the filler (16).

4. The anti-loose high-stability ball valve according to claim 1, wherein: the fixing bolt (18) comprises a stud (19) and a nut (20), the bottom end of the stud (19) is screwed into the valve cover (3), the top end of the stud (19) penetrates through the pressing plate (13), and the nut (20) is in threaded connection with the top end of the stud (19).

5. The anti-loose high-stability ball valve according to claim 1, wherein: the valve seat (11) is provided with a support ring (22) along the circumferential direction, the side valve body (2) is provided with a first step (23) along the circumferential direction, the first step (23) is provided with a spring groove (24), a compression spring (25) is arranged in the spring groove (24), and two ends of the compression spring (25) are respectively abutted against the inner end of the spring groove (24) and the outer end of the support ring (22).

6. The anti-loose high-stability ball valve according to claim 5, wherein: an elastic supporting pad (26) is clamped between the supporting ring (22) and the corresponding compression spring (25).

7. The anti-loose high-stability ball valve according to claim 1, wherein: be located and be equipped with in disk seat (11) of inlet flow channel (9) and filter piece (27), filter piece (27) including filtering frame (28), filter frame (28) threaded connection on disk seat (11) inner wall, filter frame (28) middle part is equipped with overflow mouth (29), install filter cloth (30) in overflow mouth (29).

8. The anti-loose high-stability ball valve according to claim 7, wherein: the outer end of the valve seat (11) positioned in the inlet flow channel (9) is provided with a limiting part (31) for limiting the filter frame (28), and the inner end surface of the limiting part (31) is provided with an elastic anti-falling ring (32); and a plurality of push rod parts (35) are arranged on the inner end surface of the filter frame (28) along the circumferential direction.

9. The anti-loose high-stability ball valve according to claim 7, wherein: an annular clamping groove (33) is formed in the inner wall of the overflowing opening (29), the edge part of the filter cloth (30) is embedded in the annular clamping groove (33), and the edge part of the filter cloth (30) is connected with the filter frame (28) through a screw (34).

10. The anti-loose high-stability ball valve according to claim 1, wherein: a pair of supporting plates (37) are symmetrically arranged between the two side valve bodies (2), two sides of each supporting plate (37) are respectively provided with a first positioning hole (38), the side valve bodies (2) are provided with second positioning holes (39) which are coaxial with the corresponding first positioning holes (38), and positioning columns (40) are inserted into the first positioning holes (38) and the corresponding second positioning holes (39); through hole (41) have been seted up in backup pad (37) middle part, the upper and lower both ends of spheroid (8) are equipped with one respectively and rotate convex part (42), it rotates in setting up in corresponding through hole (41) to rotate convex part (42).