CN210265926U

CN210265926U - Double-seal type butterfly valve of intaking

Info

Publication number: CN210265926U
Application number: CN201921183361.9U
Authority: CN
Inventors: 蔡海秋
Original assignee: Jingjiang Shuangjiu Pump Valve Manufacturing Co Ltd
Current assignee: Jingjiang Shuangjiu Pump Valve Manufacturing Co Ltd
Priority date: 2019-07-25
Filing date: 2019-07-25
Publication date: 2020-04-07
Anticipated expiration: 2029-07-25

Abstract

The utility model belongs to the technical field of the valve, especially, be a double containment type butterfly valve of intaking, including valve body, disk seat, a support section of thick bamboo, flange joint seat, support and actuating mechanism, wherein, the disk seat inlays and locates in the valve body, a support section of thick bamboo an organic whole sets up in the top of valve body, the flange joint seat sets up in the top of a support section of thick bamboo. The utility model discloses a correspond on the lateral margin left and right sides of valve plate and set up first sealing washer, through double containment structure, the sealing performance of valve plate has greatly been improved, the life of valve has been prolonged, leak the phenomenon in effectively preventing appearing, setting through supporting a section of thick bamboo inner bearing, prevent that the valve rod from producing violent friction, stable operation moment of torsion has been realized, fix a position and protect the valve rod through setting up the axle sleeve, through supporting a section of thick bamboo in the second sealing washer, the setting of sealing filler and third sealing washer, effectively guarantee the inside gas tightness of valve body, prevent that outside impurity and atmosphere from getting into in the valve body, stable in structure, reliability, the security performance of valve has been improved.

Description

Double-seal type butterfly valve of intaking

Technical Field

The utility model relates to the technical field of valves, specifically be a double containment type butterfly valve of intaking.

Background

A butterfly valve, also called a flap valve, is a regulating valve with simple structure, and can be used for the on-off control of low-pressure pipeline media, namely a valve which is opened and closed by rotating around a valve shaft, wherein a closing member (a valve clack or a butterfly plate) is a disk. The valve can be used for controlling the flow of various types of fluids such as air, water, steam, various corrosive media, slurry, oil products, liquid metal, radioactive media and the like. The pipe mainly plays a role in cutting off and throttling. The butterfly valve opening and closing piece is a disc-shaped butterfly plate and rotates around the axis of the butterfly plate in the valve body, so that the opening and closing or adjusting purpose is achieved.

However, the existing butterfly valve is easy to leak in the using process, has poor sealing performance and cannot meet the actual use requirement.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The not enough to prior art, the utility model provides a double containment type butterfly valve of intaking has solved current butterfly valve in the use, leaks the phenomenon in easily appearing, and the leakproofness is relatively poor, can not satisfy the problem of in-service use demand.

(II) technical scheme

In order to achieve the above object, the utility model provides a following technical scheme: a double-sealing type water inlet butterfly valve comprises a valve body, a valve seat, a supporting cylinder, a flange connecting seat, a support and an actuating mechanism, wherein the valve seat is embedded in the valve body, the supporting cylinder is integrally arranged at the top of the valve body, the flange connecting seat is arranged at the top of the supporting cylinder, the actuating mechanism is installed on the flange connecting seat through a support flange, a valve rod is arranged inside the supporting cylinder, one end of the valve rod is connected with the output end of the actuating mechanism through a coupler, a valve plate matched with the valve seat is arranged inside the valve body, an upper rod sleeve and a lower rod sleeve are correspondingly arranged on one side wall of the valve plate up and down, an auxiliary rod assembly is arranged at the bottom of the valve body, the auxiliary rod assembly and the valve rod are arranged in the same axial direction, one end of the valve rod, far away from the actuating mechanism, and the auxiliary rod assembly are respectively connected with the upper rod sleeve and the lower, the valve rod supporting device is characterized in that a bearing matched with the valve rod is arranged inside the top end of the supporting cylinder, an expansion ring used for preventing the valve rod from jumping out is arranged at the top of the flange connecting seat corresponding to the bearing, a second sealing ring matched with the valve rod is arranged at the bottom of the supporting cylinder corresponding to the bearing, a shaft sleeve matched with the valve rod is arranged on the inner wall of the bottom end of the supporting cylinder, sealing filler is filled at the periphery of the shaft sleeve, and a third sealing ring matched with the valve rod is arranged at the bottom of the shaft sleeve.

As a preferred technical scheme of the utility model, assist the pole subassembly by assist the pole with be used for preventing to assist the butterfly stopper that the pole dropped and constitute, the bottom of valve body is equipped with the through-hole with assist pole looks adaptation, and the one end and the butterfly stopper of assisting the pole are connected, and the other end of assisting the pole runs through the through-hole and is connected with lower rod cover, be equipped with the fourth sealing washer on the valve body and the butt face of assisting the pole.

As an optimal technical scheme of the utility model, be equipped with the bellying that is used for inlaying the disk seat on the valve body, the disk seat is kept away from and is equipped with the junk ring on the surface of valve body.

As an optimal technical scheme of the utility model, the middle part of bellying is equipped with the recess, be equipped with the lug with recess looks adaptation on the disk seat.

As an optimal technical scheme of the utility model, all be equipped with on the lateral wall edge about the valve plate and be used for the tight clamp plate of first sealing washer clamp, the clamp plate passes through the bolt fastening on the valve plate.

As an optimized technical scheme of the utility model, the sealing filler is flexible graphite filler.

(III) advantageous effects

Compared with the prior art, the utility model provides a double containment type butterfly valve of intaking possesses following beneficial effect:

this double containment type butterfly valve of intaking, it sets up first sealing washer to correspond on the lateral margin left and right sides at the valve plate, through double-seal structure, the sealing performance of valve plate has greatly been improved, the life of valve has been prolonged, effectively prevent interior hourglass phenomenon from appearing, setting through the interior bearing of a support section of thick bamboo, prevent that the valve rod from producing violent friction, stable operating torque has been realized, fix a position and protect the valve rod through setting up the axle sleeve, through the second sealing washer in the support section of thick bamboo, the setting of sealing filler and third sealing washer, effectively guarantee the inside gas tightness of valve body, prevent that external impurity and atmosphere from getting into in the valve body, stable in structure, reliability, the security performance of valve has been improved.

Drawings

FIG. 1 is a schematic view of the internal structure of the valve body and the support cylinder of the present invention;

FIG. 2 is an enlarged view taken at A in FIG. 1;

FIG. 3 is a cross-sectional view of the valve body, valve seat and valve plate;

fig. 4 is a front view of the present invention.

In the figure: 1. a valve body; 2. a valve seat; 3. a support cylinder; 4. a flange connecting seat; 5. a support; 6. an actuator; 7. a valve stem; 8. a valve plate; 9. a rod sleeve is arranged; 10. a lower rod sleeve; 11. an auxiliary rod assembly; 12. a threaded cylindrical pin; 13. a first seal ring; 14. a bearing; 15. an expansion ring; 16. a second seal ring; 17. a shaft sleeve; 18. sealing and filling; 19. a third seal ring; 20. a fourth seal ring; 21. a boss portion; 22. a gasket; 23. a groove; 24. and (4) a bump.

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.

Examples

Referring to fig. 1-4, the present invention provides the following technical solutions: a double-sealing type water inlet butterfly valve comprises a valve body 1, a valve seat 2, a supporting cylinder 3, a flange connecting seat 4, a support 5 and an actuating mechanism 6, wherein the valve seat 2 is embedded in the valve body 1, the supporting cylinder 3 is integrally arranged at the top of the valve body 1, the flange connecting seat 4 is arranged at the top of the supporting cylinder 3, the actuating mechanism 6 is flange-mounted on the flange connecting seat 4 through the support 5, a valve rod 7 is arranged inside the supporting cylinder 3, one end of the valve rod 7 is connected with the output end of the actuating mechanism 6 through a coupler, a valve plate 8 matched with the valve seat 2 is arranged inside the valve body 1, an upper rod sleeve 9 and a lower rod sleeve 10 are correspondingly arranged on one side wall of the valve plate 8 from top to bottom, an auxiliary rod assembly 11 is arranged at the bottom of the valve body 1, the auxiliary rod assembly 11 and the valve rod 7 are arranged in the same axial direction, one end of the valve rod 7, which is far, the valve plate 8 is provided with first sealing rings 13 on the left side and the right side of the lateral edge, a bearing 14 matched with the valve rod 7 is arranged inside the top end of the support cylinder 3, an expansion ring 15 used for preventing the valve rod 7 from jumping out is arranged at the top of the bearing 14 corresponding to the inside of the flange connection seat 4, a second sealing ring 16 matched with the valve rod 7 is arranged at the bottom of the bearing 14 corresponding to the inside of the support cylinder 3, a shaft sleeve 17 matched with the valve rod 7 is arranged on the inner wall of the bottom end of the support cylinder 3, sealing filler 18 is filled on the periphery of the shaft sleeve 17, and a third sealing ring 19 matched with the valve rod 7 is arranged at the bottom of.

In this embodiment, the first seal ring 13, the second seal ring 16 and the third seal ring 19 are all O-shaped seal rings, and are made of high temperature resistant and corrosion resistant fluororubber materials; the valve body 1, the valve rod 7 and the valve plate 8 are all made of stainless steel, and the valve rod 7 and the valve plate 8 adopt a double-center eccentric structure, so that when the valve is fully opened, a gap is generated between the valve seat 2 and the valve plate 8, and therefore, even under a high-flow-rate environment, the valve seat 2 cannot be locally worn due to the micro shock of the valve plate 8 and the like, and is durable; the outer surface of the valve body 1 is sprayed with an epoxy resin coating to play a role in protecting the valve body 1.

Specifically, assist pole subassembly 11 by assist the pole with be used for preventing to assist the butterfly stopper that the pole dropped and constitute, the bottom of valve body 1 is equipped with the through-hole with assisting pole looks adaptation, the one end and the butterfly stopper of assisting the pole are connected, the other end of assisting the pole runs through the through-hole and is connected with lower rod sleeve 10, be equipped with fourth sealing washer 20 on the valve body 1 and the butt face of assisting the pole.

In this embodiment, the auxiliary rod is fastened on the lower rod sleeve 10 through a screw, the bottom of the auxiliary rod is sealed through a butterfly plug, and meanwhile, the sealing performance of the butterfly valve is further improved through the arrangement of the fourth sealing ring 20.

Specifically, the valve body 1 is provided with a bulge 21 for embedding the valve seat 2, and the outer surface of the valve seat 2 away from the valve body 1 is provided with a lining ring 22.

In this embodiment, the gasket 22 is closely attached to the outer surface of the valve seat 2, so that the replacement is facilitated and the valve body 1 and the valve stem 7 are protected.

Specifically, a groove 23 is formed in the middle of the protruding portion 21, and a protrusion 24 matched with the groove 23 is formed on the valve seat 2.

In this embodiment, the groove 23 and the protrusion 24 are engaged with each other, so as to ensure the close fit between the valve body 1 and the groove 23, and facilitate the detachment and replacement.

Specifically, the edge of the left side wall and the edge of the right side wall of the valve plate 8 are both provided with a pressure plate used for clamping the first sealing ring 13, and the pressure plate is fastened on the valve plate 8 through screws.

In this embodiment, the setting of clamp plate is convenient for carry on spacingly and press from both sides tightly first sealing washer 13, realizes the fastening to clamp plate and first sealing washer 13 through the screw.

Specifically, the seal packing 18 is a flexible graphite packing.

In this embodiment, flexible graphite filler ring possesses good resilience and chemical stability, can provide effectual sealed effect.

The utility model discloses a theory of operation and use flow: the actuating mechanism 6 drives the valve rod 7 to rotate, so that the upper rod sleeve 9 drives the valve plate 8 to rotate for a certain angle, and the opening and closing or the adjustment of the valve are realized; through correspond on the lateral margin left and right sides at valve plate 8 and set up two first sealing washer 13, the sealing performance of valve plate 8 has greatly been improved, the life of extension valve plate 8, effectively prevent interior hourglass phenomenon from appearing, through the setting of supporting 3 inner bearing 14, prevent that valve rod 7 from producing violent friction, stable operating torque has been realized, fix a position and protect valve rod 7 through setting up axle sleeve 17, through supporting 3 interior second sealing washer 16 of section of thick bamboo, the setting of gland packing 18 and third sealing washer 19, effectively guarantee the inside gas tightness of valve body 1, prevent in external impurity and the atmosphere entering valve body 1, moreover, the steam generator is stable in structure, reliability, the security performance of valve has been improved.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a double containment type butterfly valve that intakes which characterized in that: comprises a valve body (1), a valve seat (2), a supporting cylinder (3), a flange connecting seat (4), a support (5) and an actuating mechanism (6), wherein the valve seat (2) is embedded in the valve body (1), the supporting cylinder (3) is integrally arranged at the top of the valve body (1), the flange connecting seat (4) is arranged at the top of the supporting cylinder (3), the actuating mechanism (6) is flange-mounted on the flange connecting seat (4) through the support (5), a valve rod (7) is arranged inside the supporting cylinder (3), one end of the valve rod (7) is connected with the output end of the actuating mechanism (6) through a shaft coupling, a valve plate (8) matched with the valve seat (2) is arranged inside the valve body (1), an upper rod sleeve (9) and a lower rod sleeve (10) are correspondingly arranged on one side wall of the valve plate (8) up and down, an auxiliary rod assembly (11) is arranged at the bottom of the valve body (1), the auxiliary rod assembly (11) and the valve rod (7) are arranged in the same axial direction, one end, far away from the actuating mechanism (6), of the valve rod (7) and the auxiliary rod assembly (11) are connected with an upper rod sleeve (9) and a lower rod sleeve (10) through threaded cylindrical pins (12) respectively, first sealing rings (13) are correspondingly arranged on the left side and the right side of the side edge of the valve plate (8), a bearing (14) matched with the valve rod (7) is arranged inside the top end of the supporting cylinder (3), an expansion ring (15) used for preventing the valve rod (7) from spreading out is arranged inside the flange connecting seat (4) and corresponding to the top of the bearing (14), a second sealing ring (16) matched with the valve rod (7) is arranged inside the supporting cylinder (3) and corresponding to the bottom of the bearing (14), a shaft sleeve (17) matched with the valve rod (7) is arranged on the inner wall of the bottom end of the supporting cylinder (3), and sealing filler (18) is filled in, and a third sealing ring (19) matched with the valve rod (7) is arranged at the bottom of the shaft sleeve (17).

2. The dual sealing type water inlet butterfly valve according to claim 1, wherein: the auxiliary rod component (11) is composed of an auxiliary rod and a butterfly plug used for preventing the auxiliary rod from falling, a through hole matched with the auxiliary rod is formed in the bottom of the valve body (1), one end of the auxiliary rod is connected with the butterfly plug, the other end of the auxiliary rod penetrates through the through hole and is connected with a lower rod sleeve (10), and a fourth sealing ring (20) is arranged on the abutting surface of the valve body (1) and the auxiliary rod.

3. The dual sealing type water inlet butterfly valve according to claim 1, wherein: the valve is characterized in that a protruding portion (21) used for embedding the valve seat (2) is arranged on the valve body (1), and a lining ring (22) is arranged on the outer surface, far away from the valve body (1), of the valve seat (2).

4. The dual sealing type water inlet butterfly valve according to claim 3, wherein: the middle part of bellying (21) is equipped with recess (23), be equipped with lug (24) with recess (23) looks adaptation on valve seat (2).

5. The dual sealing type water inlet butterfly valve according to claim 1, wherein: the edge of the left side wall and the edge of the right side wall of the valve plate (8) are both provided with pressing plates used for clamping the first sealing ring (13), and the pressing plates are fastened on the valve plate (8) through screws.

6. The dual sealing type water inlet butterfly valve according to claim 1, wherein: the sealing filler (18) is flexible graphite filler.