CN214466156U

CN214466156U - Butterfly valve with valve rod function of rectifying

Info

Publication number: CN214466156U
Application number: CN202120271239.8U
Authority: CN
Inventors: 何利恩
Original assignee: Wenzhou Hutai Valve Co ltd
Current assignee: Wenzhou Hutai Valve Co ltd
Priority date: 2021-01-30
Filing date: 2021-01-30
Publication date: 2021-10-22
Anticipated expiration: 2031-01-30

Abstract

The utility model discloses a butterfly valve with valve rod function of rectifying, including valve body, valve gap, lower cover, valve rod, butterfly plate and turbine box, be equipped with upper mounting hole and lower mounting hole on the valve body, valve gap and lower cover set up respectively in the upper mounting hole of valve body and the outer end of lower mounting hole, the part that the valve rod is located in the valve body is used for installing the butterfly plate in order to seal or open the runner in the valve body, the turbine box sets up above the valve gap and is used for adjusting the valve rod rotation angle; the guide piece is arranged in the lower mounting hole and comprises a guide main body, the guide main body comprises a plurality of support parts with cross sections of 21274and a shape, the two adjacent support parts are connected through the guide parts, the cross sections of the guide parts are arc-shaped, and a guide channel is formed by the guide parts; the inner of mounting hole is equipped with spacing portion down, and the bottom of direction main part is equipped with a plurality of chucking portions, covers down and is equipped with the chucking groove. The utility model discloses not only make things convenient for the dismouting operation, can guarantee the normal life of valve moreover.

Description

Butterfly valve with valve rod function of rectifying

Technical Field

The utility model relates to the technical field of valves, especially, relate to a butterfly valve with valve rod function of rectifying.

Background

A butterfly valve, also called a flap valve, is a regulating valve with a simple structure, can be used for on-off control of low-pressure pipeline media, and is a valve, the closing part of which is a disk and rotates around a valve shaft to open and close, and 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.

Traditional butterfly valve includes valve body, valve gap, lower cover, valve rod, butterfly plate and turbine case, and valve gap and lower cover set up respectively in the mounting hole outer end at both ends about the valve body and are used for installing rotatable valve rod, and there is machining error in the upper and lower mounting hole, and when the two axiality was relatively poor, the rigidity extrusion between valve rod and the upper and lower mounting hole can show increase contact friction, and this not only can bring inconvenience for the dismouting operation, can reduce the life of valve moreover.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a butterfly valve with valve rod function of rectifying, the utility model discloses have the function that the valve rod rectified, not only make things convenient for the dismouting operation, can guarantee the normal life of valve moreover.

In order to achieve the above object, the utility model provides a following technical scheme: the butterfly valve with the valve rod deviation rectifying function comprises a valve body, a valve cover, a lower cover, a valve rod, a butterfly plate and a turbine box, wherein an upper mounting hole and a lower mounting hole are formed in the valve body; the guide part is arranged in the lower mounting hole and comprises a guide main body, the guide main body comprises a plurality of support parts with a shape of a circular cross section of '21274', the adjacent two support parts are connected through guide parts, the cross section of each guide part is in an arc shape, the guide parts form a guide channel which is used for allowing the bottom end of the valve rod to pass through and is large in top and small in bottom, and the cross section of the guide channel is in a circular shape with a notch; the inner of mounting hole is equipped with the spacing portion that acts on the direction main part down, the bottom of direction main part is equipped with a plurality of chucking parts, cover down be equipped with the chucking groove of chucking looks adaptation.

Through adopting above-mentioned technical scheme, the installation is used for with valve rod complex guide in the mounting hole down, the direction main part of this guide includes supporting part and guide part, two adjacent supporting parts are connected mutually through the guide, a plurality of guide parts form one and are used for supplying the guide way that is big-end-up that the valve rod bottom passed, when the valve rod bottom stretches into along guide way, if go up the mounting hole and when the mounting hole axiality is relatively poor down, the valve rod can make the local deformation of guide part, and the supporting part provides the deformation allowance for the guide part, thereby install the direction and the installation of valve rod fast, avoided valve rod and last mounting hole and down produce violent rigid extrusion between the mounting hole, not only make things convenient for the dismouting operation, and can guarantee the normal life of valve.

The utility model discloses further set up to, the guide part is provided with the strengthening rib along vertical direction, and the strengthening rib with the chucking part is as an organic whole.

Through adopting above-mentioned technical scheme, can promote the compressive strength of guide part, reduce its probability that produces the damage.

The utility model discloses further set up to, the direction main part is the elasticity material.

Through adopting above-mentioned technical scheme, more do benefit to the direction main part and produce plastic deformation under the extrusion of valve rod, avoid the great extrusion force of production between valve rod and the guide part.

The utility model discloses further set up to, the terminal surface evenly is provided with a plurality of pressure strips in the lower cover, the outside of pressure strip is laminated mutually with the inner wall of lower mounting hole, and the upside of pressure strip is laminated mutually with the outside that corresponds the supporting part.

Through adopting above-mentioned technical scheme, can promote the steadiness of guide installation.

The utility model discloses further set up to, the valve rod bottom is equipped with and runs through the first boss of spacing portion, first boss and spacing portion clearance fit, the bottom of first boss is equipped with the second boss, the second boss is worn to establish in the direction passageway.

Through adopting above-mentioned technical scheme, can promote the direction effect of direction passageway to the valve rod.

The utility model discloses further set up to, form spacing step between valve rod bottom and the first boss, be equipped with on the valve body inner wall be used for with spacing step constitutes the first sealed pad of sealed complex.

Through adopting above-mentioned technical scheme, can promote the leakproofness between spacing step and the valve body inner wall, play preliminary sealed effect, be favorable to preventing that the medium from flowing from the lower cover and the clearance between the mounting hole down.

The utility model discloses further set up to, first hemisphere groove has been seted up to lower cover the inner, the embedded ball that is equipped with in first hemisphere groove, first hemisphere inslot outside is arranged in to the first half of ball, the second hemisphere groove with ball first half looks adaptation is seted up to the lower extreme of second boss.

Through adopting above-mentioned technical scheme, can reduce the second boss when rotating and the contact friction between the lower cover, can not only reduce the part wearing and tearing, can reduce the required moment of valve rod rotation moreover.

The utility model discloses further set up to, press from both sides between terminal surface and the valve body lower terminal surface and be equipped with the sealed pad of second in the lower cover.

By adopting the technical scheme, the sealing performance between the inner end face of the lower cover and the lower end face of the valve body can be further improved, and the medium is prevented from leaking from a gap between the inner end face of the lower cover and the lower end face of the valve body.

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 view of the guide member of the present invention in a first viewing direction;

fig. 4 is a schematic structural view of a second viewing direction of the guide of the present invention;

fig. 5 is a schematic structural view of the lower cover of the present invention.

In the figure: 1. a valve body; 2. a valve cover; 3. a lower cover; 4. a valve stem; 5. a butterfly plate; 6. a turbine case; 7. an upper mounting hole; 8. a lower mounting hole; 9. a guide member; 10. a guide body; 11. a support portion; 12. a guide portion; 13. a guide channel; 14. a limiting part; 15. a clamping part; 16. a clamping groove; 17. a compression plate; 18. a first boss; 19. a second boss; 20. a limiting step; 21. a first gasket; 22. a first hemispherical groove; 23. a ball bearing; 24. a second hemispherical groove; 25. a second gasket; 26. and (5) reinforcing ribs.

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 butterfly valve with the valve rod deviation rectifying function as shown in the attached drawings 1-5 comprises a valve body 1, a valve cover 2, a lower cover 3, a valve rod 4, a butterfly plate 5 and a turbine box 6, wherein an upper mounting hole 7 and a lower mounting hole 8 are formed in the valve body 1, the valve cover 2 and the lower cover 3 are respectively arranged at the outer ends of the upper mounting hole 7 and the lower mounting hole 8 of the valve body 1 and are used for mounting the rotatable valve rod 4, the part, located in the valve body 1, of the valve rod 4 is used for mounting the butterfly plate 5 to close or open a flow channel in the valve body 1, and the turbine box 6 is arranged above the valve cover 2 and is used for adjusting the rotation angle of the valve rod 4; a guide part 9 is installed in the lower installation hole 8, the guide part 9 comprises a guide main body 10, the guide main body 10 comprises a plurality of support parts 11 with a cross section of a shape of v 21274, which are distributed in a circumferential array, two adjacent support parts 11 are connected through guide parts 12, the support parts 11 and the guide parts 12 are integrated, the cross section of the guide part 12 is in an arc shape, the plurality of guide parts 12 form a guide channel 13 with a large top and a small bottom for the bottom end of the valve rod 4 to pass through, namely the guide channel 13 is gradually reduced along the direction away from the valve rod 4, and the cross section of the guide channel 13 is in a circular shape with a gap; the inner of lower mounting hole 8 is equipped with the spacing portion 14 that acts on direction main part 10, the bottom of direction main part 10 is equipped with a plurality of chucking portions 15, be equipped with on the lower cover 3 with the chucking groove 16 of 15 looks adaptations of chucking portion, the fixed mounting of leading 9 and lower cover 3 is realized in chucking portion 15 and the cooperation of chucking groove 16. When the bottom end of the valve rod 4 is inserted along the guide passage 13, if the coaxiality of the upper mounting hole 7 and the lower mounting hole 8 is poor, the valve rod 4 may locally deform the guide portion 12, and the support portion 11 provides a deformation margin for the guide portion 12, thereby rapidly installing the guide and installation of the valve rod 4.

As shown in fig. 3, the guide portion 12 is provided with a reinforcing rib 26 along the vertical direction, and the reinforcing rib 26 is integrated with the clamping portion 15. This design can promote the compressive strength of guide portion 12, reduces its probability that produces the damage.

The guide body 10 is made of an elastic material, specifically a rubber material. This design is more favorable to leading main part 10 to produce plastic deformation under the extrusion of valve rod 4, avoids the great extrusion force of production between valve rod 4 and guide part 12.

As shown in the attached drawing 2, a plurality of pressure strips 17 are uniformly arranged on the inner end surface of the lower cover 3, specifically, a plurality of groove bodies are arranged on the inner end of the end cover, the bottom ends of the pressure strips 17 are inserted into the groove bodies, the outer sides of the pressure strips 17 are attached to the inner wall of the lower mounting hole 8, the upper sides of the pressure strips 17 are attached to the outer sides of the corresponding supporting parts 11, and the structure can improve the mounting stability of the guide part 9.

As shown in fig. 2, a first boss 18 penetrating through the limiting portion 14 is arranged at the bottom end of the valve rod 4, the first boss 18 is in clearance fit with the limiting portion 14, a second boss 19 is arranged at the bottom end of the first boss 18, the second boss 19 penetrates through the guide channel 13, the first boss 18 and the second boss 19 are parts of the valve rod 4, and the design can improve the guide effect of the guide channel 13 on the valve rod 4.

As shown in fig. 2, a limit step 20 is formed between the bottom end of the valve rod 4 and the first boss 18, a first sealing gasket 21 which is in sealing fit with the limit step 20 is arranged on the inner wall of the valve body 1, the sealing performance between the limit step 20 and the inner wall of the valve body 1 can be improved by the design, a primary sealing effect is achieved, and the medium is prevented from flowing out from a gap between the lower cover 3 and the lower mounting hole 8.

As shown in fig. 2, the inner end of the lower cover 3 is provided with a first hemispherical groove 22, a ball 23 is embedded in the first hemispherical groove 22, the upper half of the ball 23 is disposed outside the first hemispherical groove 22, and the lower end of the second boss 19 is provided with a second hemispherical groove 24 adapted to the upper half of the ball 23. This design can promote the leakproofness between spacing step 20 and the 1 inner wall of valve body, plays preliminary sealed effect, is favorable to preventing that the medium from flowing from the clearance between lower cover 3 and lower mounting hole 8.

As shown in fig. 2, a second sealing gasket 25 is interposed between the inner end surface of the lower cover 3 and the lower end surface of the valve body 1. The design can further improve the sealing performance between the inner end surface of the lower cover 3 and the lower end surface of the valve body 1, and the medium is prevented from leaking from a gap between the inner end surface and the lower end surface.

The working principle is as follows: install in mounting hole 8 down and be used for with valve rod 4 complex guide 9, this guide 9's direction main part 10 includes supporting part 11 and guide part 12, two adjacent supporting parts 11 are connected through guide part 12, a plurality of guide parts 12 form one and are used for supplying the guide passageway 13 that is big-end-up that the valve rod 4 bottom passed, when valve rod 4 bottom stretches along guide passageway 13, if last mounting hole 7 and lower mounting hole 8 axiality are relatively poor, valve rod 4 can make guide part 12 local deformation, and support part 11 provides the deformation allowance for guide part 12, thereby install the direction and the installation of valve rod 4 fast, avoided producing violent rigid extrusion between valve rod 4 and last mounting hole 7 and lower mounting hole 8, not only make things convenient for the dismouting operation, and can guarantee the normal life of valve.

Claims

1. The butterfly valve with the valve rod deviation rectifying function comprises a valve body (1), a valve cover (2), a lower cover (3), a valve rod (4), a butterfly plate (5) and a turbine box (6), wherein an upper mounting hole (7) and a lower mounting hole (8) are formed in the valve body (1), the valve cover (2) and the lower cover (3) are respectively arranged at the outer ends of the upper mounting hole (7) and the lower mounting hole (8) of the valve body (1) and used for mounting the rotatable valve rod (4), the part, located in the valve body (1), of the valve rod (4) is used for mounting the butterfly plate (5) to seal or open a flow channel in the valve body (1), and the turbine box (6) is arranged above the valve cover (2) and used for adjusting the rotation angle of the valve rod (4); the method is characterized in that: a guide piece (9) is installed in the lower installation hole (8), the guide piece (9) comprises a guide main body (10), the guide main body (10) comprises a plurality of support parts (11) which are distributed in a circumferential array and have a cross section of 21274, the adjacent two support parts (11) are connected through a guide part (12), the cross section of the guide part (12) is in an arc shape, the guide parts (12) form a guide channel (13) which is used for allowing the bottom end of the valve rod (4) to penetrate and is large in top and small in bottom, and the cross section of the guide channel (13) is in a circular shape with a gap; the inner of mounting hole (8) is equipped with spacing portion (14) that act on direction main part (10) down, the bottom of direction main part (10) is equipped with a plurality of chucking portions (15), be equipped with on lower cover (3) with chucking groove (16) of chucking portion (15) looks adaptation.

2. The butterfly valve with the valve stem deviation rectifying function according to claim 1, wherein: the guide part (12) is provided with a reinforcing rib (26) along the vertical direction, and the reinforcing rib (26) and the clamping part (15) are integrated.

3. The butterfly valve with the valve stem deviation rectifying function according to claim 1, wherein: the guide main body (10) is made of elastic materials.

4. The butterfly valve with the valve stem deviation rectifying function according to claim 1, wherein: a plurality of pressing plates (17) are uniformly arranged on the inner end face of the lower cover (3), the outer sides of the pressing plates (17) are attached to the inner wall of the lower mounting hole (8), and the upper sides of the pressing plates (17) are attached to the outer sides of the corresponding supporting portions (11).

5. The butterfly valve with the valve stem deviation rectifying function according to claim 1, wherein: the bottom end of the valve rod (4) is provided with a first boss (18) penetrating through the limiting portion (14), the first boss (18) is in clearance fit with the limiting portion (14), the bottom end of the first boss (18) is provided with a second boss (19), and the second boss (19) penetrates through the guide channel (13).

6. The butterfly valve with the valve stem deviation rectifying function according to claim 5, wherein: a limiting step (20) is formed between the bottom end of the valve rod (4) and the first boss (18), and a first sealing gasket (21) which is used for forming sealing fit with the limiting step (20) is arranged on the inner wall of the valve body (1).

7. The butterfly valve with the valve stem deviation rectifying function according to claim 5, wherein: the inner end of the lower cover (3) is provided with a first hemispherical groove (22), a ball (23) is embedded in the first hemispherical groove (22), the upper half part of the ball (23) is arranged outside the first hemispherical groove (22), and the lower end of the second boss (19) is provided with a second hemispherical groove (24) matched with the upper half part of the ball (23).

8. The butterfly valve with the valve stem deviation rectifying function according to claim 1, wherein: and a second sealing gasket (25) is clamped between the inner end surface of the lower cover (3) and the lower end surface of the valve body (1).