CN213145382U

CN213145382U - Non-contact butterfly valve

Info

Publication number: CN213145382U
Application number: CN202020784310.8U
Authority: CN
Inventors: 汤仁义; 黄忠
Original assignee: Wuxi Lunqu Automatic Control Valve Manufacturing Co ltd
Current assignee: Wuxi Lunqu Automatic Control Valve Manufacturing Co ltd
Priority date: 2020-05-15
Filing date: 2020-05-15
Publication date: 2021-05-07
Anticipated expiration: 2030-05-15

Abstract

The utility model provides a non-contact butterfly valve, which comprises a valve body, a valve shaft, a valve plate component, a connecting rod mechanism and an actuating mechanism; one end salient of valve shaft is connected with actuating mechanism in the valve body, the other end salient of valve shaft passes through the bearing in the valve body and is connected with the bottom, be equipped with a support between bottom and the valve body, be equipped with two supports that pile up the setting between actuating mechanism and the valve body, the valve shaft is worn to establish in the support, set up perpendicular its axial oil filler point on the spindle nose, be equipped with lubricated space between spindle nose and the valve shaft, the oil filler point is linked together with lubricated space, be equipped with the sealing washer between spindle nose and the valve shaft, axle sleeve and sealing washer are located the both sides in lubricated space, actuating. The utility model discloses set up the oil filler point, need not to dismantle the butterfly valve, can lubricate the valve shaft, reduce the wearing and tearing of valve shaft to make the valve shaft drive the valve plate pivoted more nimble, facilitate the use.

Description

Non-contact butterfly valve

Technical Field

The utility model belongs to the valve field, more specifically relates to a non-contact butterfly valve.

Background

The butterfly valve is a regulating valve, can be used for controlling the flow of various media such as air, water, steam, slurry, oil products, liquid metal, radioactive media and corrosive media, and mainly plays the roles of cutting off and throttling on a pipeline. 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. The butterfly valve needs to be lubricated by adding lubricating oil after being used for a period of time, but the existing non-contact butterfly valve can be lubricated only after being disassembled, so that the abrasion is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an easy lubricated non-contact butterfly valve.

According to one aspect of the utility model, a non-contact butterfly valve is provided, which comprises a valve body, a valve shaft, a valve plate component, a connecting rod mechanism and an actuating mechanism;

one end of the valve shaft protrudes out of the valve body and is connected with the actuating mechanism, the other end of the valve shaft protrudes out of the valve body and is connected with the bottom cover through a bearing, a bracket is arranged between the bottom cover and the valve body, two stacked brackets are arranged between the actuating mechanism and the valve body, the valve shaft is arranged in the bracket in a penetrating way,

the valve plate assembly is connected with the valve shaft through a connecting rod mechanism,

the joint of the valve shaft and the valve body is sleeved with a shaft head, the shaft head is positioned between the valve body and the valve shaft, graphite filler is filled between the shaft head and the valve shaft, the graphite filler is fixed with a shaft sleeve through a filler gland, the filler gland and the shaft sleeve are sleeved on the valve shaft,

an oil filling hole vertical to the axial direction of the shaft head is formed in the shaft head, a lubricating gap is formed between the shaft head and the valve shaft, the oil filling hole is communicated with the lubricating gap, a sealing ring is arranged between the shaft head and the valve shaft, the shaft sleeve and the sealing ring are positioned on two sides of the lubricating gap,

the actuator is coupled to the valve shaft.

In some embodiments, the valve plate assembly comprises a valve plate, a sealing ring and a pressing plate, wherein an annular clamping groove is formed in the joint of the valve plate and the valve body, the sealing ring is clamped in the annular clamping groove, the pressing plate is connected with the valve plate through a bolt, the pressing plate covers a part of the sealing ring, and the part, protruding out of the pressing plate, of the sealing ring abuts against the valve seat when the valve plate is closed.

In some embodiments, the edge of the ring-shaped clamping groove is provided with a barb, and the barb is positioned at the edge of the valve plate.

In some embodiments, a stiffener is disposed between the drag plate seat and the valve plate.

In some embodiments, the crank, the traction plate and the traction plate seat are provided in two, symmetrically arranged on two sides of the hanger.

In some embodiments, be equipped with the gallows on the inside wall of valve body, the valve shaft wears to establish in the gallows, the valve plate orientation the inside traction plate seat that is equipped with of valve body, the one end of traction plate with the gallows passes through the traction pin hub connection, the other end of traction plate with the traction plate seat passes through the traction pin hub connection, a pot head of crank is established on the valve shaft, the other pot head of crank is established on the round pin axle of traction plate seat, gallows, crank, traction plate and traction plate seat constitute link mechanism.

In some embodiments, the actuator is an electric actuator.

The beneficial effects are as follows: the utility model discloses set up the oil filler point, need not to dismantle the butterfly valve, can lubricate the valve shaft, reduce the wearing and tearing of valve shaft to make the valve shaft drive the valve plate pivoted more nimble, facilitate the use.

Drawings

Fig. 1 is a schematic front view of a non-contact butterfly valve according to an embodiment of the present invention;

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

fig. 3 is a schematic cross-sectional structural view of a non-contact butterfly valve according to an embodiment of the present invention;

fig. 4 is an enlarged view of a portion B in fig. 3.

Detailed Description

Fig. 1 to 4 schematically show a non-contact butterfly valve according to the present invention. As shown in fig. 1 to 4, the non-contact butterfly valve includes a valve body 1, a valve shaft 2, a valve plate assembly 5, a link mechanism, and an actuator 6.

The valve body 1 is of a flat-like cylindrical shape. The middle part of the inside wall of the valve body 1 is provided with a hanging bracket 11, and the valve shaft 2 is arranged in the hanging bracket 11 in a penetrating way. The valve plate assembly 5 includes a valve plate 51, a seal ring 52, and a pressure plate 53. The inner side wall in the valve body 1 is provided with a valve seat 12 extending in the radial direction thereof near the end portion thereof, and the valve seat 12 has a ring shape. When the valve plate 51 is in the closed state, the valve plate 51 abuts against the valve seat 12. The joint of the valve plate 51 and the valve seat 12 is provided with an annular clamping groove for installing a sealing ring 52. The sealing ring 52 is clamped in the annular clamping groove. In order to enable the sealing ring 52 to be secured in the ring groove. A pressure plate 53 is also connected to the valve plate 51. The pressure plate 53 has a ring shape. The pressure plate 53 is connected to the valve plate 51 by bolts. The pressure plate 53 covers a portion of the seal ring 52, thereby securing the seal ring 52 in the ring groove. The portion of the sealing ring 52 protruding from the pressure plate 53 is tightly abutted against the valve seat 12 when the valve plate 51 is closed, and plays a role of sealing. In order to guarantee the sealing effect, the edge of ring groove is equipped with the barb, and the barb is located the edge of valve plate 51, from this with the edge fastening of sealing washer 52, when preventing that valve plate 51 from closing, sealing washer 52 receives the extrusion and spreads out the sealed effect of influence.

A drawing plate seat 31 is provided on a surface of the valve plate 51 facing the inside of the valve body 1. In order to improve the strength of the pulling plate base 31, a reinforcing rib 32 is provided between the pulling plate base 31 and the valve plate 51. In this embodiment, two parallel ribs 32 are provided in front of the pulling plate base 31 and the valve plate 51. The drawbar plate carrier 31 and the valve shaft 2 are connected by a drawbar plate 3. Specifically, one end of the drawbar 3 is connected to the hanger 11 through a drawbar pin, and the other end of the drawbar 3 is connected to the drawbar seat 31 through a drawbar pin. Two ends of the crank 4 are respectively provided with two mounting holes, the mounting hole with larger aperture is sleeved on the valve shaft 2, and the mounting hole with smaller aperture is sleeved on the pin shaft on the traction plate seat 31. The length of the crank 4 is longer than the length of the traction plate 3. The hanger 11, the crank 4, the traction plate 3 and the traction plate seat 31 form a link mechanism to drive the valve plate 51 to open and close. In order to stabilize the operation of the valve plate 51, two traction plate seats 31 are provided, one on each side of the hanger 11. The two traction plates 3 are respectively arranged on the two traction plate seats 31. The two cranks 4 are arranged on two sides of the hanger 11 and on two sides of the two traction plates 3. In this embodiment, the cranks 4 are symmetrically arranged on both sides of the hanger 11. Two cranks 4 are located on either side of the two traction plates 3. In this embodiment, the two drag plates 3 are symmetrically disposed on both sides of the hanger 11, thereby stabilizing the operation of the valve shaft 2.

The valve shaft 2 is inserted into the valve body 1 and does not pass through the axis of the valve body 1. One end of the valve shaft 2 protrudes from the valve body 1 and is connected to an actuator 6. The other end of the valve shaft 2 protrudes from the valve body 1 and is connected to the bottom cover 61. Two brackets 7 are arranged between the valve body 1 and the actuating mechanism 6. Two supports 7 are overlapped and connected through bolts. The valve spindle 2 is connected to the actuator 6 via two brackets 7. The valve shaft 2 and the two brackets 7 are connected through a bearing. The bearing is located at the junction of the two brackets 7. The valve shaft 2 is coupled to the bottom cover 61 via a bearing. A bracket 7 is provided between the valve shaft 2 and the bottom cover 61. The bracket 7 and the bottom cover 61 are connected by bolts. Both ends of the valve shaft 2 are inserted into the holder 7. The shaft head 81 is sleeved at the joint of the valve shaft 2 and the valve body 1. The spindle head 81 is located between the valve body 1 and the valve shaft 2. Graphite packing 82 is filled between the spindle head 81 and the valve shaft 2. The graphite packing 82 makes the valve body 1 suitable for highly corrosive media without contaminating the media. The graphite packing 82 is fixed between the spindle head 81 and the valve body 1 by a packing gland 83 and a bushing 84. The packing gland 83 includes a gland body and a gland end cap disposed from the end of the gland body in a direction perpendicular thereto. The end part of the gland pipe body is clamped between the shaft head 81 and the valve shaft 2 and is propped against the graphite packing 82, and the gland pipe body is clamped between the valve shaft 2 and the bracket 7. The gland end cover is connected with the bracket 7 through bolts. The bushing 84 is located between the valve shaft 2 and the stub shaft 81.

A lubrication gap 86 is provided between the spindle head 81 and the valve shaft 2. The spindle head 81 is provided with an oil filling hole 85 vertical to the axial direction of the spindle head, and the oil filling hole 85 is vertical to the spindle head 81. The oil filler hole 85 communicates with the lubrication gap 86. Lubricating oil enters a lubricating gap between the shaft head 81 and the valve shaft 2 through the oil filling hole 85, so that the effects of lubricating the valve shaft 2 and preventing the valve shaft 2 from being locked are achieved, and meanwhile, water vapor can be isolated. The end surface of the spindle head 81 is perpendicular to the side wall thereof, so that the lubricating effect is good. In order to prevent leakage of the lubricating oil, a seal 87 is provided between the spindle head 81 and the valve shaft 2. Bushing 84 and seal 87 are located on either side of lubrication gap 86.

The actuator 6 is connected to the valve shaft 2. In this embodiment, the actuator 6 is an electric actuator 6. The actuating mechanism 6 drives the valve shaft 2 to rotate, the rotation of the valve shaft 2 drives the crank 4 to move, and then the linkage mechanism formed by the hanger 11, the crank 4, the traction plate 3 and the traction plate seat 31 drives the valve plate 51 to rotate, so that the valve plate 51 is opened and closed.

What has been described above are only some embodiments of the invention. For those skilled in the art, without departing from the inventive concept, several modifications and improvements can be made, which all fall within the scope of the invention.

Claims

1. A non-contact butterfly valve is characterized by comprising a valve body, a valve shaft, a valve plate assembly, a link mechanism and an actuating mechanism;

the actuator is coupled to the valve shaft.

2. The non-contact butterfly valve according to claim 1, wherein the valve plate assembly comprises a valve plate, a sealing ring and a pressing plate, an annular clamping groove is formed at a joint of the valve plate and the valve body, the sealing ring is clamped in the annular clamping groove, the pressing plate is connected with the valve plate through a bolt, the pressing plate covers a part of the sealing ring, and a part of the sealing ring protruding out of the pressing plate abuts against the valve seat when the valve plate is closed.

3. The non-contact butterfly valve of claim 2, wherein an edge of the annular groove is provided with a barb, the barb being located at an edge of the valve plate.

4. The non-contact butterfly valve according to claim 2, wherein the valve plate is provided with a pulling plate seat facing the inside of the valve body, and a reinforcing rib is provided between the pulling plate seat and the valve plate.

5. The non-contact butterfly valve according to claim 4, further comprising a pulling plate and a crank, wherein the inner side wall of the valve body is provided with a hanging bracket, and the two cranks, the two pulling plates and the two pulling plate seats are symmetrically arranged on two sides of the hanging bracket.

6. The non-contact butterfly valve according to claim 5, wherein the valve shaft is inserted into the hanger, one end of the pulling plate is connected with the hanger through a pulling pin shaft, the other end of the pulling plate is connected with the pulling plate seat through a pulling pin shaft, one end of the crank is sleeved on the valve shaft, the other end of the crank is sleeved on a pin shaft of the pulling plate seat, and the hanger, the crank, the pulling plate and the pulling plate seat form a link mechanism.

7. The non-contact butterfly valve of claim 1, wherein the actuator is an electric actuator.