CN211715798U

CN211715798U - High-performance low-torque eccentric butterfly valve

Info

Publication number: CN211715798U
Application number: CN201922268174.7U
Authority: CN
Inventors: 李啸; 刘建林; 孙益飞
Original assignee: Yiai Xi Jiangsu Pipeline Control System Co Ltd
Current assignee: Exxon Jiangsu Fluid Control System Co ltd
Priority date: 2019-12-17
Filing date: 2019-12-17
Publication date: 2020-10-20
Anticipated expiration: 2029-12-17

Abstract

The utility model discloses a high performance low moment of torsion eccentric butterfly valve, including the valve body, with the valve body passes through bolted connection's last gland and lower gland, dish board, valve rod, upper shaft sleeve and lower axle sleeve, wherein, the valve body has run through the shaft hole along its axis direction, the valve body intermediate position runs through and forms the valve pocket, the dish board can be followed its vertical axis and rotated the setting and be in the valve pocket, the valve rod includes drive lever and driven lever, the one end fixed mounting of drive lever the internal surface top of dish board, the other end of drive lever stretches out outside the last gland, the laminating of drive lever outer wall and slidable sleeve have last axle sleeve, it is in to go up axle sleeve fixed mounting on the inner wall of valve body top shaft hole. The utility model relates to a novelty is through increasing antifriction bearing on the valve rod to reduce the produced frictional force of valve at the switch in-process valve rod, thereby realize alleviateing the switching torque of valve.

Description

High-performance low-torque eccentric butterfly valve

Technical Field

The utility model particularly relates to an eccentric butterfly valve field specifically is a high performance low moment of torsion eccentric butterfly valve.

Background

The opening and closing part of the butterfly valve is a disc-shaped disc plate and rotates around the axis of the butterfly valve body, so that the opening and closing or adjusting purpose is achieved.

The butterfly valve can be used for controlling the flow of various types of fluids such as air, water, steam, slurry, oil products, liquid metal, corrosive media and the like, and mainly plays a role in cutting off and throttling on a pipeline; however, the butterfly valves used in various industries have large torque, large execution and high cost.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a high performance low moment of torsion eccentric butterfly valve through increase antifriction bearing on the valve rod to reduce the produced frictional force of valve at the switch in-process valve rod, thereby realize alleviateing the switching torque of valve.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a high performance low moment of torsion eccentric butterfly valve, including the valve body, with the valve body passes through bolted connection's last gland and lower gland, dish board, valve rod, upper shaft sleeve and lower axle sleeve, wherein, the valve body has run through the shaft hole along its axis direction, the valve body intermediate position runs through and forms the valve pocket, the dish board can be followed its vertical axis and rotated the setting and be in the valve pocket, its characterized in that: the valve rod includes drive lever and driven lever, the one end fixed mounting of drive lever the internal surface top of dish board, the other end of drive lever stretches out outside the last gland, the laminating of drive lever outer wall and slidable cover have an axle sleeve, it is in to go up axle sleeve fixed mounting on the inner wall of valve body top shaft hole, lie in fixed mounting has down on the inner wall of shaft hole of valve body bottom the axle sleeve, axle sleeve laminating and slidable cover are established down on the outer wall of driven lever, the one end fixed mounting of driven lever is in the internal surface bottom of dish board, the other end of driven lever is equipped with the boss, the boss rotates the setting and is in the low recess that the gland top was seted up down.

Preferably, the automatic transmission mechanism further comprises a first rolling bearing and a second rolling bearing, wherein the first rolling bearing is sleeved on the outer wall of the driving rod, the first rolling bearing is located at the top end of the upper shaft sleeve, the second rolling bearing is sleeved on the boss of the driven rod, and the second rolling bearing is located at the top end of the lower gland.

Preferably, one end of the disc plate, which is close to the valve rod, protrudes to form an annular step, a disc plate sealing ring is sleeved on the cylindrical surface of the annular step, and a sealing ring pressing plate is pressed on one end surface, which is far away from the valve rod, of the sealing ring.

Preferably, a gap above the first rolling bearing is filled with a filler, and the top end of the filler is pressed with the upper gland.

Preferably, the bottom end of the upper gland is fixedly provided with a bracket.

Preferably, the axes of the upper shaft sleeve and the lower shaft sleeve are on the same vertical line.

The utility model adopts the above technique, compare with current technique and have following beneficial effect: the first rolling bearing and the second rolling bearing are respectively added at the driving rod and the driven rod, so that the friction force generated by the whole valve rod of the disc plate in the opening and closing process is reduced, and the opening and closing torque of the valve is reduced.

Drawings

Fig. 1 is a schematic side view of the cross-sectional structure of the present invention;

FIG. 2 is an enlarged view of the position A of the present invention;

fig. 3 is an enlarged view of the position B of the present invention.

In the figure: 1. a support; 2. a gland is arranged; 3. a filler; 4. an upper shaft sleeve; 5. a valve body; 6. a seal ring pressing plate; 7. a valve stem; 71. a driving lever; 72. a driven lever; 8. a butterfly plate; 9. a butterfly plate sealing ring; 10. a lower shaft sleeve; 11. a second rolling bearing; 12. a lower gland; 13. and a first rolling bearing.

Detailed Description

In combination with the drawings of the embodiments of the present invention, the following will clearly and completely describe the technical solutions of the embodiments of the present invention.

Referring to fig. 1-3, in an embodiment of the present invention, a high performance low torque eccentric butterfly valve includes a valve body 5, an upper gland 2 and a lower gland 12 connected to the valve body 5 by bolts, a disc plate 8, a valve rod 7, an upper shaft sleeve 4 and a lower shaft sleeve 10, wherein the valve body 5 has a shaft hole penetrating along an axial direction thereof, a valve cavity is formed by the middle position of the valve body 5, the disc plate 8 is rotatably disposed in the valve cavity along a vertical axis thereof, the valve rod 7 includes a driving rod 71 and a driven rod 72, one end of the driving rod 71 is fixedly mounted on the top end of the inner surface of the disc plate 8, the other end of the driving rod 71 extends out of the upper gland 2, the outer wall of the driving rod 71 is fitted and slidably sleeved with the upper shaft sleeve 4, the upper shaft sleeve 4 is fixedly mounted on the inner wall of the shaft hole at the top end of the valve body 5, the inner wall of the shaft hole at the bottom end of the valve, one end of the driven rod 72 is fixedly arranged at the bottom end of the inner surface of the disc plate 8, and the other end of the driven rod 72 is provided with a convex seat which is rotatably arranged in a lower groove formed in the top end of the lower gland 12. Specifically, one end of the active rod 71 extending out of the upper gland 2 is used for connecting an actuating mechanism; the upper bushing 4 and the lower bushing 10 guide the driving link 71 and the driven link 72, respectively, to prevent a problem that the driving link 71 and the driven link 72 are inclined to cause a closing error of the butterfly plate 8.

In this embodiment, the device further includes a rolling bearing i 13 and a rolling bearing ii 11, the rolling bearing i 13 is sleeved on the outer wall of the driving rod 71, the rolling bearing i 13 is located at the top end of the upper shaft sleeve 4, the rolling bearing ii 11 is sleeved on the boss of the driven rod 72, and the rolling bearing ii 11 is located at the top end of the lower gland 12. Specifically, a first rolling bearing 13 and a second rolling bearing 11 are respectively added at the driving rod 71 and the driven rod 72 to reduce the friction force generated by the valve rod 7 during the opening and closing process of the disc plate 8, so that the opening and closing torque of the valve is reduced.

In this embodiment, the one end protrusion that dish board 8 is close to valve rod 7 forms annular step, and the cover has dish board sealing washer 9 on the face of cylinder of annular step, and sealing washer 9 keeps away from a terminal surface of valve rod 7 and compresses tightly there is sealing washer clamp plate 6. Specifically, the disc seal ring 9 is used to completely seal the space between the valve cavity of the valve body 5 and the disc 8 when the valve is closed, so as to prevent the medium from flowing in.

In this embodiment, the gap above the rolling bearing one 13 is filled with the packing 3, the top end of the packing 3 is pressed by the upper gland 2, and the gland 2 is used for pressing the packing 3.

In this embodiment, the bottom end of the upper gland 2 is fixedly provided with a bracket 1 for placing an actuating mechanism.

In this embodiment, the axes of the upper bushing 4 and the lower bushing 10 are on the same vertical line.

During specific implementation, one end, extending out of the upper gland 2, of the driving rod 71 is connected with a driving executing mechanism, the driving executing mechanism works, the driving rod 7 integrally drives the butterfly plate 8 to rotate, opening and closing of the valve are completed, due to the effect of the first rolling bearing 13 and the second rolling bearing 11, the rotating moment of the butterfly plate 8 is relatively reduced, the matched driving executing mechanism is relatively small, and cost is reduced, energy is saved, and convenience is achieved.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. The utility model provides a high performance low moment of torsion eccentric butterfly valve, including valve body (5), with valve body (5) pass through bolted connection's last gland (2) and lower gland (12), dish board (8), valve rod (7), go up axle sleeve (4) and lower axle sleeve (10), wherein, valve body (5) have run through the shaft hole along its axis direction, valve body (5) intermediate position runs through and forms the valve chamber, dish board (8) can be followed its vertical axis and rotated the setting and be in the valve chamber, its characterized in that: the valve rod (7) comprises a driving rod (71) and a driven rod (72), one end of the driving rod (71) is fixedly installed at the top end of the inner surface of the disc plate (8), the other end of the driving rod (71) extends out of the upper gland (2), the outer wall of the driving rod (71) is jointed and is sleeved with an upper shaft sleeve (4) in a sliding way, the upper shaft sleeve (4) is fixedly arranged on the inner wall of a shaft hole at the top end of the valve body (5), the lower shaft sleeve (10) is fixedly arranged on the inner wall of the shaft hole at the bottom end of the valve body (5), the lower shaft sleeve (10) is fit and sleeved on the outer wall of the driven rod (72) in a sliding way, one end of the driven rod (72) is fixedly arranged at the bottom end of the inner surface of the disc plate (8), and a convex seat is arranged at the other end of the driven rod (72), and the convex seat is rotatably arranged in a lower groove formed in the top end of the lower gland (12).

2. The high performance low torque eccentric butterfly valve of claim 1, wherein: still include antifriction bearing one (13) and antifriction bearing two (11), antifriction bearing one (13) cover is established on the outer wall of driving lever (71), just antifriction bearing one (13) is located go up the top of axle sleeve (4), antifriction bearing two (11) covers is equipped with on the boss of driven lever (72), just antifriction bearing two (11) are located the top of gland (12) down.

3. The high performance low torque eccentric butterfly valve of claim 1, wherein: the one end arch that dish board (8) are close to valve rod (7) forms annular step, the cover has dish board sealing washer (9) on the face of cylinder of annular step, valve rod (7) are kept away from in sealing washer (9) one terminal surface compresses tightly there is sealing washer clamp plate (6).

4. The high performance low torque eccentric butterfly valve of claim 2, wherein: and a gap above the rolling bearing I (13) is filled with a filler (3), and the top end of the filler (3) is pressed with the upper gland (2).

5. The high performance low torque eccentric butterfly valve of claim 1, wherein: and a support (1) is fixedly arranged at the bottom end of the upper gland (2).

6. The high performance low torque eccentric butterfly valve of claim 1, wherein: the axes of the upper shaft sleeve (4) and the lower shaft sleeve (10) are on the same vertical line.