CN216519643U

CN216519643U - Butterfly valve with adjustable butterfly plate center

Info

Publication number: CN216519643U
Application number: CN202123245869.7U
Authority: CN
Inventors: 郑家滨; 刘浩; 王鹏; 刘运洪
Original assignee: Tianjin Lester Valve Co ltd
Current assignee: Tianjin Lester Valve Co ltd
Priority date: 2021-12-22
Filing date: 2021-12-22
Publication date: 2022-05-13
Anticipated expiration: 2031-12-22

Abstract

The utility model discloses a butterfly valve with an adjustable butterfly plate center, which comprises a valve body, wherein a valve rod is rotatably connected inside the valve body, a leakage-proof sealing mechanism is arranged on the outer wall of the valve rod, an adjusting mechanism is arranged at the bottom of the valve body and comprises a gasket which is slidably connected to the bottom wall in the valve body, an internal thread sleeve is fixedly connected to the bottom of the valve body, a threaded rod is in threaded connection with the inner wall of the internal thread sleeve, a knob is fixedly connected to one end, away from the valve body, of the threaded rod, a positioning groove is formed in the top end of the valve rod, a closure sealing mechanism is fixedly connected to the outer wall of the valve rod and comprises a butterfly plate fixedly connected to the outer wall of the valve rod, a sealing ring is sleeved on the inner wall of the butterfly plate, and an inner hexagon bolt is slidably connected inside the butterfly plate; through rotating the knob and driving the packing ring to slide under the effect of internal thread cover, threaded rod, the packing ring slides and can drive the butterfly plate motion under the effect of valve rod for the height of butterfly plate can be adjusted, makes the holistic effect of cutting off and throttle of butterfly valve better.

Description

Butterfly valve with adjustable butterfly plate center

Technical Field

The utility model relates to the technical field of valves, in particular to a butterfly valve with an adjustable butterfly plate center.

Background

The butterfly valve is a regulating valve, and has the advantages of simple structure, convenient operation, small size and the like, so that the butterfly valve is widely applied to the transportation of various liquid and gaseous fluids and mainly plays the roles of cutting off and throttling during transportation.

The butterfly valve is rotatory through the butterfly plate follow valve rod in the valve body, thereby reach the purpose of opening and close or regulating flow, but current butterfly valve is after long-time the use, under the effect of butterfly plate gravity, the butterfly plate can cause wearing and tearing to the gasket of bottom when rotating, long-time use can make the high decline of butterfly plate, further can make the holistic effect of cutting off and throttle of butterfly valve not good, and do not have the height that a butterfly valve can adjust butterfly plate center now, the leakproofness of current butterfly valve is not good enough simultaneously, the condition of revealing can appear in the in-process of using, the practicality of butterfly valve has been reduced.

Therefore, in order to solve these problems, a butterfly plate center adjustable butterfly valve is needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a butterfly valve with an adjustable butterfly plate center, which aims to solve the problems that the height position of the center of the butterfly plate cannot be adjusted and the sealing performance of the butterfly valve is not good enough in the background technology.

In order to solve the technical problems, the utility model provides the following technical scheme: the utility model provides a butterfly valve with adjustable butterfly plate center, which comprises a valve body, the inside of valve body is rotated and is connected with the valve rod, the outer wall of valve rod is provided with leak protection sealing mechanism, the bottom of valve body is provided with adjustment mechanism, adjustment mechanism includes the packing ring of sliding connection at the internal diapire of valve, the bottom fixedly connected with internal thread cover of valve body, the inner wall threaded connection of internal thread cover has the threaded rod, the one end fixedly connected with knob of valve body is kept away from to the threaded rod, the constant head tank has been seted up on the top of valve rod, the outer wall fixedly connected with of valve rod seals the mechanism, it includes the butterfly plate of fixed connection at the valve rod outer wall to cut-off seals the mechanism, the sealing washer has been cup jointed to the inner wall of butterfly plate, the inside sliding connection of butterfly plate has hexagon socket head cap screw, hexagon socket head cap screw's outer wall threaded connection has outer hexagon nut.

Furthermore, one end, far away from the knob, of the threaded rod penetrates through the internal thread sleeve, one end, far away from the knob, of the threaded rod is arranged at the bottom of the washer, and the washer is arranged at the bottom of the internal thread sleeve.

Based on the technical characteristics, the operator rotates the knob and drives the gasket to move upwards under the action of the internal thread sleeve and the threaded rod, and the gasket moves upwards under the action of the valve rod to drive the center of the butterfly plate to move upwards.

Furthermore, the outer hexagon nut is slidably connected to one side of the sealing ring, the inner hexagon bolt penetrates through the butterfly plate and the sealing ring, and meanwhile, one end of the inner hexagon bolt, which penetrates through the butterfly plate and the sealing ring, is in threaded connection with the inner wall of the outer hexagon nut.

Based on the technical characteristics, the sealing ring can be fixed in the butterfly plate by screwing the inner hexagon bolt and the outer hexagon nut, so that the sealing ring can play a better sealing effect on the butterfly valve.

Further, leak protection sealing mechanism is including rotating the upper seal pad of connection at the valve rod outer wall, and upper seal pad fixed connection is at the inner wall of valve body, and the outer wall of valve rod rotates and is connected with the axle sleeve, and the outer wall fixed connection of going up the axle sleeve is in the inside of valve body.

Based on above-mentioned technical characteristics, can play sealed effect between valve body and valve rod through the setting of upper seal pad, the upper shaft cover can make the rotation of valve rod in the valve body inside more smooth and easy.

Further, the top of valve body sliding connection has the filler, and fixed gland threaded connection has seted up the internal thread groove at the top of valve body, and fixed gland passes through internal thread groove and valve body threaded connection, and filler, fixed gland are run through in proper order at the top of valve rod.

Based on above-mentioned technical characteristics, can fix the inside at the valve body with the packing through the inside of fixed gland screw in valve body, further can play sealed effect to this butterfly valve under the effect of packing.

Further, the one end that the upper seal was kept away from to the outer wall of valve rod rotates and is connected with lower sealed the pad, and lower sealed outer wall fixed connection is in the inside of valve body, and the one end that the outer wall of valve rod is close to lower sealed pad rotates and is connected with lower axle sleeve, and lower axle sleeve outer wall fixed connection is at the inner wall of valve body.

Based on above-mentioned technical characteristics, lower sealed pad can play sealed effect to this butterfly valve, and lower axle sleeve can make the rotation of valve rod in the valve body inside more smooth and easy.

Compared with the prior art, the utility model has the beneficial effects that: the gasket is driven to slide under the action of the internal thread sleeve and the threaded rod by rotating the knob, and the gasket can drive the butterfly plate to move under the action of the valve rod, so that the height of the butterfly plate can be adjusted, and the integral cutting-off and throttling effects of the butterfly valve are better; compress tightly the packing through fixed gland to under the effect of upper seal pad, lower seal pad and sealing washer, make the leakproofness of this butterfly valve better, further the condition of revealing can not appear at the in-process that uses, strengthened the practicality of this butterfly valve.

Drawings

FIG. 1 is a schematic sectional view of a valve body and a butterfly plate according to the present invention;

FIG. 2 is a schematic cross-sectional view of the valve body of the present invention;

FIG. 3 is an enlarged view of the structure at A in FIG. 2 according to the present invention;

FIG. 4 is a schematic view of the connection between the leak-proof sealing mechanism and the valve stem according to the present invention;

fig. 5 is a schematic view of the connection between the adjusting mechanism and the valve stem according to the present invention.

In the figure: 1. a valve body; 2. a valve stem; 3. a leak-proof sealing mechanism; 31. an upper seal gasket; 32. an upper shaft sleeve; 33. a filler; 34. fixing a gland; 35. a lower seal gasket; 36. a lower shaft sleeve; 37. an internal thread groove; 4. an adjustment mechanism; 41. a gasket; 42. an internal thread sleeve; 43. a threaded rod; 44. a knob; 45. positioning a groove; 5. a closure sealing mechanism; 51. a butterfly plate; 52. a seal ring; 53. a hexagon socket head cap screw; 54. an outer hexagonal nut.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4 in the drawings, the present invention provides an embodiment: the utility model provides a butterfly valve with adjustable butterfly plate center, including valve body 1, the inside of valve body 1 is rotated and is connected with valve rod 2, the outer wall of valve rod 2 is provided with leak protection sealing mechanism 3, leak protection sealing mechanism 3 is including rotating the sealed 31 of upper seal of connecting at the valve rod 2 outer wall, the sealed 31 fixed connection of upper seal is at the inner wall of valve body 1, the outer wall of valve rod 2 is rotated and is connected with upper shaft sleeve 32, the outer wall fixed connection of upper shaft sleeve 32 is in the inside of valve body 1, can play the sealing effect between valve body 1 and valve rod 2 through the setting of upper seal 31, upper shaft sleeve 32 can make the rotation of valve rod 2 in the inside of valve body 1 more smooth and easy, the top sliding connection of valve body 1 has packing 33, fixed gland 34 threaded connection is at the top of valve body 1, internal thread groove 37 has been seted up at the top of valve body 1, fixed gland 34 passes through internal thread groove 37 and valve body 1 threaded connection, the top of valve rod 2 runs through packing 33 in proper order, A fixed gland 34, which can fix the packing 33 in the valve body 1 by screwing the fixed gland 34 into the valve body 1, and further can play a sealing role for the butterfly valve under the action of the packing 33;

the one end that the upper seal pad 31 was kept away from to the outer wall of valve rod 2 rotates and is connected with lower seal pad 35, the outer wall fixed connection of lower seal pad 35 is in the inside of valve body 1, the one end that the outer wall of valve rod 2 is close to lower seal pad 35 rotates and is connected with lower axle sleeve 36, lower axle sleeve 36 outer wall fixed connection is at the inner wall of valve body 1, lower seal pad 35 can play sealed effect to this butterfly valve, lower axle sleeve 36 can make the rotation of valve rod 2 in the inside of valve body 1 more smooth and easy.

Referring to fig. 1 and 5 in the drawings of the specification, an adjusting mechanism 4 is arranged at the bottom of a valve body 1, the adjusting mechanism 4 includes a gasket 41 slidably connected to the inner bottom wall of the valve body 1, an inner threaded sleeve 42 is fixedly connected to the bottom of the valve body 1, a threaded rod 43 is connected to the inner wall of the inner threaded sleeve 42 in a threaded manner, one end of the threaded rod 43 away from the knob 44 penetrates through the inner threaded sleeve 42, one end of the threaded rod 43 away from the knob 44 is arranged at the bottom of the gasket 41, the gasket 41 is arranged at the bottom of the inner threaded sleeve 42, the operator rotates the knob 44 and drives the gasket 41 to move upwards under the action of the inner threaded sleeve 42 and the threaded rod 43, one end of the threaded rod 43 away from the valve body 1 is fixedly connected with the knob 44, and the top end of the valve rod 2 is provided with a positioning groove 45;

referring to fig. 2-3 in the drawings of the specification, an intercepting and sealing mechanism 5 is fixedly connected to an outer wall of the valve rod 2, the intercepting and sealing mechanism 5 includes a butterfly plate 51 fixedly connected to an outer wall of the valve rod 2, a gasket 41 moves upward to drive a center of the butterfly plate 51 to move upward under the action of the valve rod 2, a seal ring 52 is sleeved on an inner wall of the butterfly plate 51, an inner hexagon bolt 53 is slidably connected to an inner portion of the butterfly plate 51, an outer hexagon nut 54 is threadedly connected to an outer wall of the inner hexagon bolt 53, the outer hexagon nut 54 is slidably connected to one side of the seal ring 52, the inner hexagon bolt 53 penetrates through the butterfly plate 51 and the seal ring 52, one end of the inner hexagon bolt 53 penetrates through the butterfly plate 51 and the inner wall of the outer hexagon nut 54, the gasket 41 is driven to slide under the action of the inner thread sleeve 42 and the threaded rod 43 by rotating the knob 44, the gasket 41 slides to drive the butterfly plate 51 to move under the action of the valve rod 2, the height of the butterfly plate 51 can be adjusted, so that the overall cutting-off and throttling effects of the butterfly valve are better; through the tightening of hexagon socket head cap screw 53 and outer hexagon nut 54, can fix sealing washer 52 in the inside of butterfly plate 51 for sealing washer 52 can play better sealed effect to this butterfly valve and compress tightly packing 33 through fixed gland 34, and under the effect of upper seal pad 31, lower seal pad 35 and sealing washer 52, make the leakproofness of this butterfly valve better, further the condition of revealing can not appear at the in-process of using, has strengthened the practicality of this butterfly valve.

The working principle is as follows: the valve rod 2 rotates for a long time to enable the gasket 41 to be worn and thinned, the gasket 41 is thinned to enable the valve rod 2 to descend under the action of gravity, the butterfly plate 51 descends due to the descending of the valve rod 2, the positioning groove 45 descends inside the fixed gland 34 due to the descending of the valve rod 2, an operator cannot see the positioning groove 45, at the moment, the knob 44 is rotated forward, the knob 44 rotates to drive the threaded rod 43 to rotate, the threaded rod 43 rotates to drive the internal thread sleeve 42 to move upwards under the action of the internal thread sleeve 42, the internal thread sleeve 42 moves upwards to drive the gasket 41 to move upwards, the gasket 41 moves upwards to drive the valve rod 2 to move upwards, the valve rod 2 moves upwards to drive the center of the butterfly plate 51 to move upwards, meanwhile, the valve rod 2 moves upwards to drive the positioning groove 45 to move upwards, and when the positioning groove 45 moves upwards to leave the inside the fixed gland 34 and can be observed by the operator, the operator stops rotating the knob 44, the butterfly plate 51 is now centred at exactly the normal height.

When the positioning groove 45 is too high through adjustment, the center position of the butterfly plate 51 is higher than the normal height, an operator rotates the knob 44 reversely, the knob 44 rotates to enable the position of the butterfly plate 51 to descend, and the adjustment effect can be achieved.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a butterfly valve with adjustable butterfly plate center, includes valve body (1), its characterized in that: the inner part of the valve body (1) is rotatably connected with a valve rod (2), the outer wall of the valve rod (2) is provided with a leakage-proof sealing mechanism (3), the bottom of the valve body (1) is provided with an adjusting mechanism (4), the adjusting mechanism (4) comprises a gasket (41) which is connected to the inner bottom wall of the valve body (1) in a sliding manner, the bottom of the valve body (1) is fixedly connected with an inner thread sleeve (42), the inner wall of the inner thread sleeve (42) is connected with a threaded rod (43) in a threaded manner, one end, far away from the valve body (1), of the threaded rod (43) is fixedly connected with a knob (44), the top end of the valve rod (2) is provided with a positioning groove (45), the outer wall of the valve rod (2) is fixedly connected with a closure sealing mechanism (5), the closure sealing mechanism (5) comprises a butterfly plate (51) which is fixedly connected to the outer wall of the valve rod (2), the inner wall of the butterfly plate (51) is sleeved with a sealing ring (52), and the inner hexagonal bolt (53) is connected in a sliding manner, the outer wall of the inner hexagon bolt (53) is connected with an outer hexagon nut (54) in a threaded manner.

2. The butterfly valve with the adjustable butterfly plate center of claim 1, wherein: one end, far away from the knob (44), of the threaded rod (43) penetrates through the internal thread sleeve (42), one end, far away from the knob (44), of the threaded rod (43) is arranged at the bottom of the gasket (41), and the gasket (41) is arranged at the bottom of the internal thread sleeve (42).

3. The butterfly valve with the adjustable butterfly plate center of claim 1, wherein: the outer hexagon nut (54) is connected to one side of the sealing ring (52) in a sliding mode, the inner hexagon bolt (53) penetrates through the butterfly plate (51) and the sealing ring (52), and meanwhile one end, penetrating through the butterfly plate (51) and the sealing ring (52), of the inner hexagon bolt (53) is connected to the inner wall of the outer hexagon nut (54) in a threaded mode.

4. The butterfly valve with the adjustable butterfly plate center of claim 1, wherein: leak protection sealing mechanism (3) are including rotating upper seal pad (31) of connecting at valve rod (2) outer wall, upper seal pad (31) fixed connection at the inner wall of valve body (1), and the outer wall of valve rod (2) rotates and is connected with axle sleeve (32), goes up the outer wall fixed connection of axle sleeve (32) in the inside of valve body (1).

5. The butterfly valve with adjustable butterfly plate center of claim 4, wherein: the top sliding connection of valve body (1) has packing (33), and fixed gland (34) threaded connection has seted up internal thread groove (37) at the top of valve body (1), and fixed gland (34) are through internal thread groove (37) and valve body (1) threaded connection, and packing (33), fixed gland (34) are run through in proper order to the top of valve rod (2).

6. The butterfly valve with adjustable butterfly plate center of claim 4, wherein: the one end that the upper seal pad (31) was kept away from to the outer wall of valve rod (2) rotates and is connected with lower sealing pad (35), and the outer wall fixed connection of lower sealing pad (35) is in the inside of valve body (1), and the one end that the outer wall of valve rod (2) is close to lower sealing pad (35) rotates and is connected with lower axle sleeve (36), and lower axle sleeve (36) outer wall fixed connection is at the inner wall of valve body (1).