CN210461720U

CN210461720U - Low-torque high-temperature-resistant double-eccentric butterfly valve

Info

Publication number: CN210461720U
Application number: CN201921508632.3U
Authority: CN
Inventors: 曹剑钢; 金涛; 雷剑
Original assignee: Kaierte Valve Co ltd
Current assignee: Kaierte Valve Co ltd
Priority date: 2019-09-09
Filing date: 2019-09-09
Publication date: 2020-05-05
Anticipated expiration: 2029-09-09

Abstract

The utility model provides a low-torque high-temperature resistant double-eccentric butterfly valve, which comprises a shell, an upper valve rod, a lower valve rod, a bearing, a sealing ring, a shaft sleeve, a hook head, a driving mechanism and a valve body mechanism, the driving mechanism of the utility model, a sealing strip and a ceramic layer, drive the worm through rotating the rocking handle and rotate, worm and worm wheel meshing, realize opening and closing of valve body mechanism, worm wheel and worm meshing drive ratio is big, have auto-lock kinetic energy, the effectual valve body mechanism that has reduced opens the moment of torsion, valve body mechanism is closed and is extrudeed the sealing strip with the casing, make certain elasticity have between valve body mechanism and the casing, it is poor to avoid leading to the leakproofness when the difference in temperature is great, the effectual leakproofness that has improved the valve body, the ceramic layer has certain high temperature resistant and wear resistance, the liquid strikes the ceramic layer, make the valve body have wearability and high temperature resistance, the effectual life who improves the valve body.

Description

Low-torque high-temperature-resistant double-eccentric butterfly valve

Technical Field

The utility model belongs to the technical field of two eccentric butterfly valves, especially, relate to a high temperature resistant two eccentric butterfly valves of low moment of torsion.

Background

The butterfly valve is a valve which is a simple structure, can be used for the on-off control of low-pressure pipeline media, is a valve that the valve clack or butterfly plate of a closing part is a disk and rotates around a valve shaft to open and close, 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, and mainly plays a role in cutting off and throttling on a pipeline.

The invention discloses a double-eccentric type sealing butterfly valve with the name of CN 109519552A, which is invented and created by the invention and comprises a valve seat arranged in a valve body and used for sealing the valve body and a valve plate, wherein the valve seat is annular, the valve seat comprises a main body, a taper spherical surface and a buffer groove, the taper spherical surface is arranged on one side of the main body close to the valve plate, the buffer groove is arranged on one side of the main body far away from the valve plate and is arranged in a concave manner, and an arc is arranged at one end of the main body, which is arranged on one side of the buffer groove and is close to. But prior art lacks the high temperature resistant pair of eccentric butterfly valve of low moment of torsion, directly rotates the valve rod through the hand, and the power of valve body directly acts on the hand, and moment of torsion when the increase rotates, the valve body directly adopts the metal material, has reduced the leakproofness of valve body when temperature variation is great, and liquid directly strikes the valve body, reduces valve body life's problem.

Therefore, the invention of the low-torque high-temperature-resistant double-eccentric butterfly valve is very necessary.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a high temperature resistant two eccentric butterfly valves of low moment of torsion to solve prior art and lack the high temperature resistant two eccentric butterfly valves of low moment of torsion, directly rotate the valve rod through the hand, the power of valve body is directly acted on the hand, moment of torsion when the increase rotates, and the valve body directly adopts the metal material, has reduced the leakproofness of valve body when temperature variation is great, and liquid directly strikes the valve body, reduces valve body life's problem. A low-torque high-temperature-resistant double-eccentric butterfly valve comprises a shell, an upper valve rod, a lower valve rod, a bearing, a sealing ring, a shaft sleeve, a hook head, a driving mechanism and a valve body mechanism, wherein the upper valve rod is sleeved above the inside of the shell; the lower valve rod is sleeved below the inner part of the shell; the bearing is fixed below the shell in a sleeved mode and is sleeved on the outer side of the lower valve rod; the sealing rings are multiple and are fixed on the outer side of the upper valve rod through sleeving; the driving mechanism is fixed above the shell through a bolt; the shaft sleeve is sleeved at the joint of the shell and the driving mechanism; the hook head is used for fixing the shaft sleeve; the valve body mechanism is fixed inside the shell through bolts.

The driving mechanism comprises a box body, an oil nozzle, a worm, an oil drainage bolt, a rocking handle and a worm wheel, wherein the oil nozzle is fixed above the box body through threads; the worm is fixed inside the box body through a bearing, and one end of the worm penetrates through the box body; the oil drainage bolt is fixed on one side of the box body through threads; the rocking handle is fixed at one end of the worm through a bolt; the worm wheel is fixed in the box body through a bearing and is vertically installed with the worm.

The valve body mechanism comprises a valve body, a fixed sleeve, threaded holes, grooves, sealing strips and ceramic layers, wherein 2 fixed sleeves are fixed on one side of the valve body through bolts; 2 threaded holes are formed in the fixing sleeve; the groove is formed in the valve body; the sealing strip is fixed inside the groove in a clamping manner; the ceramic layer is arranged on the other side of the valve body.

The box body is provided with 2 threaded holes, and lubricating oil is arranged in the box body; the worm and the worm wheel are connected in a matched mode through threads.

The valve body is made of alloy steel; the thickness of the sealing strip is 10-15 mm; the ceramic layer is 5-8mm thick.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the utility model discloses an actuating mechanism's setting drives the worm through rotating the rocking handle and rotates, and the meshing of worm and worm wheel realizes opening and closing of valve body mechanism, and worm wheel and worm meshing drive ratio are big, have auto-lock kinetic energy, the effectual valve body mechanism that has reduced opens the moment of torsion.

2. The utility model discloses a setting of sealing strip, valve body mechanism close with casing extrusion sealing strip, make to have certain elasticity between valve body mechanism and the casing, avoid leading to the leakproofness poor when the difference in temperature is great, the effectual leakproofness that improves the valve body.

3. The utility model discloses a setting of ceramic layer, ceramic layer have certain high temperature resistance and wear resistance, and liquid strikes the ceramic layer, makes the valve body have wearability and high temperature resistance, the effectual life who improves the valve body.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural diagram of the driving mechanism of the present invention.

Fig. 3 is a schematic structural diagram of the valve body mechanism of the present invention.

In the figure:

1-shell, 2-upper valve rod, 3-lower valve rod, 4-bearing, 5-sealing ring, 6-shaft sleeve, 7-hook head, 8-driving mechanism, 81-box, 82-oil nozzle, 83-worm, 84-oil drain bolt, 85-rocking handle, 86-worm wheel, 9-valve body mechanism, 91-valve body, 92-fixed sleeve, 93-threaded hole, 94-groove, 95-sealing strip and 96-ceramic layer.

Detailed Description

The invention is further described below with reference to the accompanying drawings:

example (b):

as shown in figures 1 to 3

The utility model provides a low-torque high-temperature-resistant double-eccentric butterfly valve, which comprises a shell 1, an upper valve rod 2, a lower valve rod 3, a bearing 4, a sealing ring 5, a shaft sleeve 6, a hook head 7, a driving mechanism 8 and a valve body mechanism 9, wherein the upper valve rod 2 is sleeved above the inside of the shell 1; the lower valve rod 3 is sleeved below the inner part of the shell 1; the bearing 4 is fixed below the shell 1 through sleeving and is sleeved outside the lower valve rod 3; a plurality of sealing rings 5 are adopted and fixed on the outer side of the upper valve rod 2 through sleeve joint; the driving mechanism 8 is fixed above the shell 1 through bolts; the shaft sleeve 6 is sleeved at the joint of the shell 1 and the driving mechanism 8; the hook head 7 is used for fixing the shaft sleeve 6; the valve body mechanism 9 is fixed inside the housing 1 by bolts.

The driving mechanism 8 comprises a box body 81, a choke 82, a worm 83, an oil drainage bolt 84, a rocking handle 85 and a worm wheel 86, wherein the choke 82 is fixed above the box body 81 through threads; the worm 83 is fixed inside the box 81 through a bearing, and one end of the worm penetrates through the box 81; the oil drain bolt 84 is fixed on one side of the box body 81 through threads; the rocking handle 85 is fixed at one end of the worm 83 through a bolt; the worm wheel 86 is fixed inside the case 81 by a bearing and is installed perpendicular to the worm 83.

The valve body mechanism 9 comprises a valve body 91, a fixing sleeve 92, a threaded hole 93, a groove 94, a sealing strip 95 and a ceramic layer 96, wherein 2 fixing sleeves 92 are fixed on one side of the valve body 91 through bolts; the number of the threaded holes 93 is 2, and the threaded holes are formed in the fixed sleeve 92; the groove 94 is formed on the valve body 91; the sealing strip 95 is fixed inside the groove 94 by clamping; the ceramic layer 96 is disposed on the other side of the valve body 91.

The box body 81 is provided with 2 threaded holes, and lubricating oil is arranged in the box body, so that emulsified oil is sufficiently lubricated when the worm and gear are meshed, and the friction force during meshing is reduced; the worm 83 and the worm wheel 86 are connected in a threaded fit mode, and the gear ratio and the self-locking performance are high.

The valve body 91 is made of alloy steel and has high hardness; the sealing strip 95 is 10-15mm thick, so that the sealing strip has good sealing property when the temperature difference changes greatly; the ceramic layer 96 is 5-8mm thick, and the wear resistance and the high temperature resistance are improved.

Principle of operation

The utility model discloses in, drive worm 83 through rotating rocking handle 85 and rotate, worm 83 and worm wheel 86 meshing, realize opening and closing of valve body mechanism 9, worm wheel 86 is big with worm 83 meshing drive ratio, auto-lock kinetic energy has, the inside lubricating oil of box 81 has reduced the coefficient of friction of worm 83 with worm wheel 86, the effectual moment of torsion of opening of valve body mechanism 9 that has reduced, valve body mechanism 9 closes and 1 extrusion seal strip 95 of casing, make and have certain elasticity between valve body mechanism 9 and the casing 1, it is poor to lead to the leakproofness when avoiding the difference in temperature great, the effectual leakproofness that improves the valve body, ceramic layer 96 has certain high temperature resistant and wear resistance, liquid strikes ceramic layer 96, make the valve body have wearability and high temperature resistant performance, the effectual life who improves the valve body.

Utilize technical scheme, or technical personnel in the field are in the utility model discloses under technical scheme's the inspiration, design similar technical scheme, and reach above-mentioned technological effect, all fall into the utility model discloses a protection scope.

Claims

1. The utility model provides a high temperature resistant pair of eccentric butterfly valve of low moment of torsion which characterized in that: the valve comprises a shell (1), an upper valve rod (2), a lower valve rod (3), a bearing (4), a sealing ring (5), a shaft sleeve (6), a hook head (7), a driving mechanism (8) and a valve body mechanism (9), wherein the upper valve rod (2) is sleeved above the inside of the shell (1); the lower valve rod (3) is sleeved below the inner part of the shell (1); the bearing (4) is fixedly arranged below the shell (1) in a sleeved mode and is sleeved on the outer side of the lower valve rod (3); a plurality of sealing rings (5) are adopted and are fixed on the outer side of the upper valve rod (2) through sleeve joint; the driving mechanism (8) is fixed above the shell (1) through a bolt; the shaft sleeve (6) is sleeved at the joint of the shell (1) and the driving mechanism (8); the hook head (7) is used for fixing the shaft sleeve (6); the valve body mechanism (9) is fixed inside the shell (1) through bolts.

2. The low-torque high-temperature resistant double-eccentric butterfly valve of claim 1, wherein: the driving mechanism (8) comprises a box body (81), an oil nozzle (82), a worm (83), an oil drainage bolt (84), a rocking handle (85) and a worm wheel (86), wherein the oil nozzle (82) is fixed above the box body (81) through threads; the worm (83) is fixed in the box body (81) through a bearing, and one end of the worm penetrates through the box body (81); the oil drainage bolt (84) is fixed on one side of the box body (81) through threads; the rocking handle (85) is fixed at one end of the worm (83) through a bolt; the worm wheel (86) is fixed in the box body (81) through a bearing and is vertically installed with the worm (83).

3. The low-torque high-temperature resistant double-eccentric butterfly valve of claim 1, wherein: the valve body mechanism (9) comprises a valve body (91), a fixing sleeve (92), a threaded hole (93), a groove (94), a sealing strip (95) and a ceramic layer (96), wherein 2 fixing sleeves (92) are fixed on one side of the valve body (91) through bolts; the number of the threaded holes (93) is 2, and the threaded holes are formed in the fixed sleeve (92); the groove (94) is formed in the valve body (91); the sealing strip (95) is fixed inside the groove (94) through clamping; the ceramic layer (96) is arranged on the other side of the valve body (91).

4. The low-torque high-temperature resistant double-eccentric butterfly valve of claim 2, wherein: the box body (81) is provided with 2 threaded holes, and lubricating oil is arranged inside the box body; the worm (83) and the worm wheel (86) are connected in a threaded fit manner.

5. The low-torque high-temperature resistant double-eccentric butterfly valve of claim 3, wherein: the valve body (91) is made of alloy steel; the sealing strip (95) is 10-15mm thick; the ceramic layer (96) is 5-8mm thick.