An industrial butterfly valve

Abstract

The present invention relates to the field of industrial valves, and more specifically to an industrial butterfly valve, comprising a valve tube, a secondary valve plate rotating on the valve tube, and a primary valve plate rotating on the secondary valve plate. The industrial butterfly valve also includes an external sealing sleeve fixedly connected to the secondary valve plate. The industrial butterfly valve also includes sealing grooves arranged at both ends of the secondary valve plate, and two sealing rings rotating in the two sealing grooves for sealing the connection between the secondary valve plate and the valve tube. The industrial butterfly valve also includes a spring plate fixedly connected to the secondary valve plate, and a spring groove arranged on the valve tube, wherein a spring fixedly connected to the spring plate is arranged in the spring groove, and has the advantage of being able to perform two-stage adjustment.

Description

Technical Field

[0001] The invention relates to the field of industrial valves, and more particularly to an industrial butterfly valve. Background Art

[0002] Industrial valves are an important accessory for controlling the flow of media on industrial pipelines. They can be used to control the flow of various types of fluids such as air, water, steam, various corrosive media, mud, oil, liquid metal and radioactive media. The valve consists of three major parts: valve body, opening and closing mechanism and valve cover. The butterfly valve uses a disc that can rotate around the axis to control the opening and closing of the pipeline. The angle reflects the degree of opening of the valve. According to the different transmission methods, butterfly valves are divided into three types: manual, pneumatic and electric. The commonly used one is manual. The rotating handle drives the valve stem through the gear transmission to open and close the valve.

[0003] The invention with patent number 112081930 discloses an industrial butterfly valve with precise opening and closing function, including a valve body and a valve disc, a support base fixedly connected to the valve body, a support frame and a fixed plate fixedly connected to the support frame, a fixed frame fixedly connected to the fixed frame, a driving motor arranged on the fixed frame, an output end of the driving motor is connected to a bevel gear 1, and a bevel gear 2 is arranged in the fixed frame. In the invention, the output shaft of the driving motor drives the bevel gear 1 to rotate, and because the bevel gear 1 is meshed with the bevel gear 2, the bevel gear 1 drives the two bevel gears 2 to rotate, the two bevel gears 2 drive the bevel gears 3 on both sides to rotate in opposite directions, the bevel gear 3 drives the bevel gear 4 to rotate, and the bevel gear 4 drives the fixed disk 1 to rotate, so that the movable block slides in the through hole, so that the fixed disk 2 rotates, and the size of the opening and closing can be precisely controlled by the indicator rod and the angle ruler, the flow rate can be controlled, the impact on the equipment can be reduced, and the service life of the valve disc can be increased. The invention has the disadvantage of not being able to perform two-stage adjustment. Summary of the invention

[0004] The object of the present invention is to provide an industrial butterfly valve which has the advantage of being able to perform two-stage regulation.

[0005] The purpose of the present invention is achieved through the following technical solutions:

[0006] An industrial butterfly valve comprises a valve pipe, a secondary valve plate rotating on the valve pipe, and a primary valve plate rotating on the secondary valve plate.

[0007] Furthermore, the industrial butterfly valve also includes an external sealing sleeve fixedly connected to the secondary valve plate.

[0008] Furthermore, the industrial butterfly valve also includes sealing grooves arranged at both ends of the secondary valve plate, and two sealing rings rotating in the two sealing grooves for sealing the connection between the secondary valve plate and the valve pipe.

[0009] Furthermore, the industrial butterfly valve also includes a spring plate fixedly connected to the secondary valve plate, and a spring groove arranged on the valve tube, wherein a spring fixedly connected to the spring plate is arranged in the spring groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0011] Figure 1 It is a structural diagram of the two-stage regulation of industrial butterfly valve;

[0012] Figure 2 It is a schematic diagram of the structure of the valve pipe;

[0013] Figure 3 It is the position relationship diagram of the primary valve plate and the secondary valve plate;

[0014] Figure 4 It is a structural schematic diagram of the secondary valve plate;

[0015] Figure 5 It is a structural diagram of the secondary valve plate and the sealing part;

[0016] Figure 6 yes Figure 5 A partial enlarged view of the structure shown;

[0017] Figure 7 is a schematic structural diagram of the spiral plate 52;

[0018] Figure 8 It is a schematic diagram of the structure for driving the primary valve plate to rotate;

[0019] Fig. 9 It is a schematic diagram of the structure of multiple bent plates;

[0020] Fig.10 It is a structural diagram of an industrial butterfly valve. DETAILED DESCRIPTION

[0021] refer to Figure 1 , detailed description of the implementation process of the two-stage industrial butterfly valve to adjust the valve cavity size and thus adjust the flow rate in the industrial butterfly valve:

[0022] An industrial butterfly valve comprises a valve pipe 11, both ends of the valve pipe 11 are provided with end plates for connection, and the valve pipe 11 is installed by bolts at both ends, a secondary valve plate 21 is rotatably connected to the valve pipe 11, and a primary valve plate 31 is rotatably connected to the secondary valve plate 21, when the primary valve plate 31 is rotated under force, the fluid flow area in the valve pipe 11 is adjusted as the opening of the primary valve plate 31 is adjusted, thereby achieving the adjustment of the butterfly valve, and when a larger fluid flow area in the valve pipe 11 is required, the primary valve plate 31 is continued to be driven to rotate, a protrusion is fixedly connected to the primary valve plate 31, and a pressure rod is fixedly connected to the secondary valve plate 21, when the primary valve plate 31 rotates until the protrusion pushes the pressure rod to rotate, the pressure rod drives the secondary valve plate 21 to rotate, thereby achieving the adjustment of the fluid flow area in the valve pipe 11, and a notch is provided at the upper end of the secondary valve plate 21, and the opening of the secondary valve plate 21 can be determined by the initial position of the notch.

[0023] In combination with the above embodiments, the following functions can also be achieved:

[0024] refer to Figure 3 , detailed description of the implementation process to prevent the industrial butterfly valve from leaking due to poor sealing at the connection between the secondary valve plate and the valve pipe:

[0025] An external sealing sleeve 22 is fixedly connected to the secondary valve plate 21, and the external sealing sleeve 22 is rotatably connected to the valve tube 11 to seal the connection between the secondary valve plate 21 and the valve tube 11 to prevent the liquid flowing in the industrial butterfly valve from leaking from the gap.

[0026] In combination with the above embodiments, the following functions can also be achieved:

[0027] refer to Figure 4 , 5 and 6, detailing the implementation process of sealing the internal connection between the secondary valve plate and the valve tube:

[0028] Sealing grooves 24 are provided at both ends of the secondary valve plate 21, and sealing rings 41 are rotatably connected to the two sealing grooves 24. The two sealing rings 41 are rotatably connected to the valve tube 11. The two sealing rings 41 play the role of rotational sealing, and rotationally seal the connection between the secondary valve plate 21 and the valve tube 11 to prevent liquid leakage from the connection.

[0029] In combination with the above embodiments, the following functions can also be achieved:

[0030] refer to Figure 2 and 4 , detailed description of the implementation process of automatic reset after the secondary valve plate force disappears:

[0031] A spring plate 23 is fixedly connected to the secondary valve plate 21, a spring groove 12 is provided at the bottom end of the valve tube 11, a spring fixedly connected to the spring plate 23 is provided in the spring groove 12, the spring plate 23 is slidably connected in the spring groove 12, when the secondary valve plate 21 rotates, it drives the spring plate 23 to move in the spring groove 12 to compress the spring, when the external force on the secondary valve plate 21 disappears, the compressed spring pushes the spring plate 23 to reset, thereby realizing the reset of the secondary valve plate 21.

[0032] In combination with the above embodiments, the following functions can also be achieved:

[0033] refer to Figure 7 and 10 , details the implementation process of accelerating or buffering the liquid flowing in the valve tube:

[0034] A cross 51 is fixedly connected to the inner wall of the valve tube 11, and a ring gear 53 and a gear 54 are rotatably connected to the cross 51. The ring gear 53 and the gear 54 are meshed for transmission. A spiral plate 52 is fixedly connected to the ring gear 53. The gear 54 is fixedly connected to the output shaft of the reduction motor I. The reduction motor I is fixedly connected to the cross 51. The reduction motor I is started, and the reduction motor I drives the gear 54 to rotate. The gear 54 meshes and drives the ring gear 53 to rotate. The ring gear 53 drives the spiral plate 52 to rotate. The reduction motor I can rotate forward and reverse, so the spiral plate 52 can also rotate forward and reverse. One rotation direction of the spiral plate 52 can accelerate the flow of liquid and make the liquid flow faster. When the secondary valve plate 21 is opened, the reduction motor I is started, so that the rotation of the spiral plate 52 can accelerate the rapid flow of the liquid. When the flowing liquid needs to be decelerated, the liquid flow driven by the rotation of the spiral plate 52 is opposite to the direction of the liquid entering and exiting, thereby achieving a deceleration effect.

[0035] In combination with the above embodiments, the following functions can also be achieved:

[0036] refer to Fig. 9 and 10 , details the implementation process of guiding the liquid when the secondary valve plate is not adjusting the valve pipe:

[0037] A plurality of bent plates 73 are fixedly connected to the inner wall of the valve tube 11, a mounting plate is fixedly connected to the inner wall of the valve tube 11, a cylinder I 71 is fixedly connected to the mounting plate, an adjustment frame 72 is fixedly connected to the cylinder rod of the cylinder I 71, when the secondary valve plate 21 does not rotate, the liquid flows through the gap opened by the primary valve plate 31, at this time, the cylinder rod of the cylinder I 71 is started to contract, the cylinder rod of the cylinder I 71 drives the adjustment frame 72 to push the plurality of bent plates 73 to contract, forming a guiding effect on the liquid. The shape of the contraction tube guides the flowing liquid so that the liquid flows to the middle part of the valve tube 11. When the secondary valve plate 21 is driven to rotate, the cylinder rod of the cylinder Ⅰ71 is driven to extend again, and the cylinder rod of the cylinder Ⅰ71 pushes the adjustment frame 72 to break away from the restraint of the multiple bent plates 73. The multiple bent plates 73 are all made of elastic material. The multiple bent plates 73 are reset under their own elasticity and lose the guiding effect on the liquid, so that the liquid can flow quickly from the valve tube 11, thereby accelerating the flow of the liquid.

[0038] In combination with the above embodiments, the following functions can also be achieved:

[0039] refer to Fig. 9 , detailing the implementation process of multiple bent plates being able to retract and reset:

[0040] The multiple bent plates 73 are all made of elastic material. When deformed by force, the multiple bent plates 73 can form a structure with a guiding function. When the external force restriction is lost, the multiple bent plates 73 are reset under the action of their own elastic force and lose the guiding function for the liquid.

[0041] In combination with the above embodiments, the following functions can also be achieved:

[0042] refer to Fig.10 , detailed description of the implementation process of driving the primary valve plate to rotate:

[0043] A bracket 13 is fixedly connected to the valve tube 11, and a rack 63 is slidably connected to the bracket 13. A variable force gear 32 is fixedly connected to the primary valve plate 31, and the rack 63 and the variable force gear 32 are meshed for transmission. When the rack 63 slides linearly, the rack 63 meshes and drives the variable force gear 32 to rotate, and the variable force gear 32 drives the primary valve plate 31 to rotate. Then, when the primary valve plate 31 is fully opened, the primary valve plate 31 continues to be driven to rotate, thereby driving the secondary valve plate 21 to rotate, thereby further adjusting the liquid flow cross-sectional area in the valve tube 11, and achieving the effect of two-stage regulation in the industrial butterfly valve.

[0044] In combination with the above embodiments, the following functions can also be achieved:

[0045] refer to Fig.10 , details the implementation process of driving the rack for linear sliding:

[0046] A vertical plate 61 is fixedly connected to the valve tube 11, a cylinder II 62 is fixedly connected to the vertical plate 61, and a rack 63 is fixedly connected to the cylinder rod of the cylinder II 62. When the cylinder II 62 is started, the rack 63 is driven by the cylinder rod of the cylinder II 62 to slide linearly, thereby enabling the rack 63 to engage with the variable force gear 32 for rotation, thereby achieving the adjustment of the opening of the primary valve plate 31.

[0047] In combination with the above embodiments, the following functions can also be achieved:

[0048] refer to Fig.10 , details the implementation process of sealing both ends of the valve tube during use to prevent liquid leakage:

[0049] Arc grooves are provided at both ends of the valve tube 11, and bolts are sleeved at both ends of the valve tube 11. The bolts at both ends are threadedly connected to the threaded pipe fittings at both ends. Sealing rubber rings are added at the connection points at both ends of the valve tube 11, and the sealing rubber rings are squeezed by the two ends of the valve tube 11 and the end faces of the connecting pipe fittings to achieve sealing of the connection, thereby preventing liquid leakage.

Claims

1. An industrial butterfly valve, characterized in that: The invention comprises a valve tube (11), a secondary valve plate (21) rotating on the valve tube (11), and a primary valve plate (31) rotating on the secondary valve plate (21), and also comprises an external sealing sleeve (22) fixedly connected to the secondary valve plate (21); when the primary valve plate (31) is rotated under force, the flow area of ​​the fluid in the valve tube (11) is adjusted as the opening of the primary valve plate (31) is adjusted, thereby achieving the adjustment of the butterfly valve; when a larger flow area of ​​the fluid in the valve tube (11) is required, the primary valve plate (31) is driven to rotate continuously; a protrusion is fixedly connected to the primary valve plate (31); and a pressure rod is fixedly connected to the secondary valve plate (21); when the primary valve plate (31) rotates until the protrusion pushes the pressure rod to rotate, the pressure rod drives the secondary valve plate (21) to rotate, thereby achieving the adjustment of the flow area of ​​the fluid in the valve tube (11); a notch is arranged at the upper end of the secondary valve plate (21); the initial position of the notch determines the position of the secondary valve plate The invention relates to a valve tube (21) for adjusting the opening of a valve tube (21), and further comprises a cross (51) fixedly connected to the inner wall of the valve tube (11), a gear ring (53) and a gear (54) rotating on the cross (51), and a spiral plate (52) fixedly connected to the gear ring (53), wherein the gear ring (53) and the gear (54) are meshingly driven, and further comprises a cross (51) fixedly connected to the inner wall of the valve tube (11), a gear ring (53) and a gear (54) rotating on the cross (51), and a spiral plate (52) fixedly connected to the gear ring (53), wherein the gear ring (53) and the gear (54) are meshingly driven, and further comprises a plurality of bent plates (73) fixedly connected to the inner wall of the valve tube (11), and a cylinder I (71) fixedly connected to the valve tube (11) via a mounting plate, and an adjusting frame (72) fixedly connected to the cylinder rod of the cylinder I (71) for adjusting the opening of the free ends of the plurality of bent plates (73), wherein the plurality of bent plates (73) are all made of elastic material.

2. An industrial butterfly valve according to claim 1, characterized in that: It also includes sealing grooves (24) arranged at both ends of the secondary valve plate (21), and two sealing rings (41) rotating in the two sealing grooves (24) for sealing the connection between the secondary valve plate (21) and the valve pipe (11).

3. An industrial butterfly valve according to claim 2, characterized in that: It also includes a spring plate (23) fixedly connected to the secondary valve plate (21), and a spring groove (12) provided on the valve tube (11), wherein a spring fixedly connected to the spring plate (23) is provided in the spring groove (12).

4. An industrial butterfly valve according to claim 3, characterized in that: It also includes a bracket (13) fixedly connected to the valve tube (11), a rack (63) sliding on the bracket (13), and a variable force gear (32) fixedly connected to the primary valve plate (31), wherein the rack (63) and the variable force gear (32) are meshed for transmission.

5. An industrial butterfly valve according to claim 4, characterized in that: It also includes a vertical plate (61) fixedly connected to the valve tube (11), and a cylinder II (62) fixedly connected to the vertical plate (61), wherein the cylinder rod of the cylinder II (62) and the rack (63) are fixedly connected.

6. An industrial butterfly valve according to claim 5, characterized in that: Both ends of the valve tube (11) are provided with arc-shaped grooves.

Images