CN214368071U

CN214368071U - High pressure difference regulating valve

Info

Publication number: CN214368071U
Application number: CN202120567538.6U
Authority: CN
Inventors: 魏超; 张玉彩; 王青青; 叶晖; 王青鹤
Original assignee: Kaifeng High And Middle Pressure Valve Co ltd
Current assignee: Kaifeng High And Middle Pressure Valve Co ltd
Priority date: 2021-03-19
Filing date: 2021-03-19
Publication date: 2021-10-08
Anticipated expiration: 2031-03-19

Abstract

The utility model relates to a high pressure difference governing valve, which comprises a valve body, the valve body include valve body entrance point and valve body exit end, be provided with the disk seat in the valve body, the bottom of disk seat is provided with the outlet hole, the valve body endotheca of disk seat top is equipped with presses the pipe, press the pipe top to be provided with the valve gap, press and be provided with the valve rod on the disk seat, press and be provided with the import hole on the pipe, be provided with throttling arrangement on disk seat and the valve rod, be provided with the flange on the valve rod of valve gap top, go up and be provided with the connecting rod between flange and the valve gap, be provided with spacing deflector on valve rod and the connecting rod, spacing deflector and connecting rod swing joint are provided with the scale layer on the connecting rod. Through the scale layer that sets up on setting up spacing deflector and combining the connecting rod on connecting rod and valve rod, the position of observing spacing deflector on the scale layer changes and then instructs the valve clack removal and then confirms the size in the clearance of opening between valve clack and the sealed face, the utility model discloses adjust, convenient to use has extensive market prospect.

Description

High pressure difference regulating valve

Technical Field

The utility model relates to a governing valve field, concretely relates to poor governing valve of high pressure.

Background

In the automatic control of modern plants, control valves play a very important role, and the production of these plants depends on the correct distribution and control of the flowing medium. These controls, whether energy exchange, pressure reduction, or simple vessel charging, require some final control element to accomplish. The regulating valve acts as a variable resistance in the conduit. It changes the turbulence of the process fluid or provides a pressure drop in laminar flow conditions, which is caused by changing the valve resistance or "friction". This pressure reduction process is commonly referred to as "throttling".

The distance between the regulating valve clack and a sealing surface is usually adjusted by changing the position of the valve clack on a throttling cavity so as to determine the size of throttling, a servo motor is usually utilized to determine the specific movement position of the valve clack in the prior art, and the function is realized by matching a plurality of intelligent control devices, so that the product price is overhigh, and the large-scale popularization and application are difficult to obtain.

Disclosure of Invention

To prior art not enough, the utility model provides a simple structure can instruct the position that the valve clack removed and then confirm the high pressure difference governing valve of the size in clearance of opening between valve clack and the sealed face for overcome defect among the prior art.

The utility model adopts the technical proposal that: the utility model provides a high pressure difference governing valve, includes the valve body, the valve body include valve body entrance point and valve body exit end, be provided with the disk seat in the valve body, the bottom of disk seat is provided with the exit hole, the valve body endotheca of disk seat top is equipped with presses the pipe, presses the pipe top to be provided with the valve gap, the valve gap is pressed and is provided with the valve rod on the pipe and the disk seat, presses to be provided with the import hole on the pipe, is provided with throttling arrangement on disk seat and the valve rod, throttling arrangement with the valve body exit end be linked together through the exit hole, the valve body entrance point with throttling arrangement be linked together through the import hole, be provided with the flange on the valve rod of valve gap top, go up and be provided with the connecting rod between flange and the valve gap, be provided with spacing deflector on valve rod and the connecting rod, spacing deflector and connecting rod swing joint are provided with the scale layer on the connecting rod.

Preferably, the throttling device comprises a throttling cavity and a throttling valve flap, the throttling cavity is positioned on the valve seat, the throttling valve flap is positioned on a valve rod in the throttling cavity, and the outlet hole is communicated with the inlet hole through the throttling cavity.

Preferably, the top of valve gap seted up the valve rod seal groove, the valve rod seal groove has set gradually packing clamping ring, first sealing filler and packing ring from last to down.

Preferably, the upper flange is provided with a motor fixing disc, a valve rod driving nut is arranged on a valve rod in the upper flange, a connecting bearing is arranged between the valve rod driving nut and the upper flange, a driving claw is arranged on the valve rod in the motor fixing disc, and a driving rod is arranged between the driving claw and the valve rod driving nut.

Preferably, rubber sealing rings are respectively arranged between the valve body and the valve seat, between the pressure pipe and the valve body and between the pressure pipe and the valve cover.

Preferably, the number of the throttling devices is a plurality, and the plurality of throttling devices are sequentially and uniformly distributed on the valve seat along the top end of the valve seat to the bottom end direction of the valve seat.

Preferably, all be provided with the second seal between packing clamping ring and the first seal and between first seal and the packing ring and pack, the top cover of packing clamping ring the packing clamp plate is equipped with, be provided with fastening screw on packing clamp plate and the valve gap, fastening screw's quantity adopts a plurality of.

Preferably, the driving claw adopts a barrel-shaped structure with an open end positioned below, the motor fixing disc is provided with a driving motor, the output end of the driving motor is in transmission connection with the top of the driving claw, the open end of the driving claw is provided with a driving clamping groove, and the top end of the driving rod is sleeved on the driving clamping groove.

The utility model has the advantages that: first, the utility model discloses a set up the scale layer that sets up on spacing deflector combines the connecting rod on connecting rod and valve rod through observing the position change of spacing deflector on the scale layer and then instruct the position that the valve clack removed and then confirm the size in the clearance of opening between valve clack and the sealed face, mechanical structure is simple, economical and practical, the large-scale popularization and application of being convenient for. Secondly, the utility model protects the safety of the working personnel,

and again, the utility model discloses a set up between valve rod drive nut and last flange and connect the bearing and realized prescribing a limit to the position of connecting the bearing, also reduced the resistance that receives of drive nut when driving the valve rod motion simultaneously.

Finally, the utility model discloses a drive slot's quantity adopt a plurality of, a plurality of drive slot is star evenly distributed in the outside of valve rod, actuating lever and drive slot one-to-one. The driving force of the driving motor is more conveniently and uniformly transmitted to the valve rod driving nut through the combination of the driving clamping grooves arranged on the driving claw and the driving rods arranged on the valve rod driving nut.

The utility model has the advantages of simple structure, convenient operation, design benefit has improved work efficiency greatly, has fine social and economic benefits, is the product of easily using widely.

Drawings

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

Fig. 2 is a partially enlarged schematic view of detail a of fig. 1.

Fig. 3 is a partially enlarged schematic view of detail B of fig. 1.

Fig. 4 is a schematic structural diagram of the components of the present invention.

Detailed Description

As shown in fig. 1, 2, 3 and 4, a high pressure difference regulating valve comprises a valve body 1, wherein the valve body 1 comprises a valve body inlet end and a valve body outlet end, a valve seat 2 is arranged in the valve body 1, an outlet hole 3 is arranged at the bottom of the valve seat 2, a pressure pipe 4 is sleeved in the valve body 1 above the valve seat 2, a valve cover 5 is arranged above the pressure pipe 4, a valve rod 6 is arranged on the valve cover 5, the pressure pipe 4 is provided with an inlet hole 7, a throttling device is arranged on the valve seat 2 and the valve rod 6 and is communicated with the valve body outlet end through the outlet hole 3, the valve body inlet end is communicated with the throttling device through the inlet hole 7, an upper connecting disc 8 is arranged on the valve rod 6 above the valve cover 5, a connecting rod 9 is arranged between the upper connecting disc 8 and the valve cover 5, the valve rod 6 is parallel to the connecting rod 9, and a limiting guide plate 10 is arranged on the valve rod 6 and the connecting rod 9, spacing deflector 10 fixed suit is on valve rod 6, and spacing deflector 10 and connecting rod 9 swing joint are provided with scale layer 11 on the connecting rod 9.

The quantity of throttling set adopt a plurality of, a plurality of throttling set along the top of disk seat 2 to the even distribution in proper order of the bottom direction of disk seat 2 on disk seat 2. The throttling device comprises a throttling cavity 12 and a throttling valve clack 13, wherein the throttling cavity 12 is positioned on the valve seat 2, the throttling valve clack 13 is positioned on the valve rod 6 in the throttling cavity 12, and the outlet hole 3 is communicated with the inlet hole 7 through the throttling cavity 12. The plurality of throttling cavities 12 are communicated end to end in sequence. The top of the throttle chamber 12 is provided with a sealing surface which is shaped to fit the shape of the top of the throttle flap 13. In the closed state, the sealing surface abuts against the top of the throttle flap 13. The throttle flap 13 adopts an annular structure, and the outer diameter of the throttle flap 13 is gradually reduced from top to bottom. The number of the outlet holes 3 and the number of the inlet holes 7 are a plurality, and the outlet holes 3 and the inlet holes 7 are uniformly distributed on the outer side in a star shape. The medium entering from the inlet end of the valve body is throttled for a plurality of times by arranging the plurality of throttling devices, so that the throttling effect is improved.

The top of valve gap 5 seted up valve rod seal groove 14, valve rod seal groove 14 adopts the trough-shaped structure of seting up to the bottom surface direction of valve gap 5 along the top surface of valve gap 5, valve rod seal groove 14 has set gradually packing clamping ring 15, first sealing packing 16 and packing ring 17 from last to down. The first sealing filler 16 is a reinforced flexible graphite sealing ring. And second sealing fillers 24 are arranged between the packing press ring 15 and the first sealing filler 16 and between the first sealing filler 16 and the packing gasket 17, the number of the second sealing fillers 24 is two, and the second sealing fillers 24 are braided flexible graphite sealing rings. The second packing 24 is more easily compressed than the first packing 16, and further reduces the sealing of the gap between the bonnet 5 and the valve stem 6 on the basis of the first packing 16.

The top of the packing press ring 15 is sleeved with a packing press plate 25, the packing press plate 25 and the valve cover 5 are provided with fastening screws 26, and the number of the fastening screws 26 is a plurality. The packing press ring 15 and the fastening screws 26 are arranged, so that when the packing press ring is installed for the first time, the packing press plate 25 is driven to move downwards by screwing the fastening screws 26, the packing press ring 15 is driven to move correspondingly, the first sealing packing 16 and the second sealing packing 24 are forced to deform, so that the gap between the valve cover 5 and the valve rod 6 is sealed, after the product is used for a preset time, the gap between the first sealing packing 16 and the valve rod 6 and the gap between the valve rod 6 and the second sealing packing 24 are correspondingly increased, and the first sealing packing 16 and the second sealing packing 24 are forced to deform again by screwing the fastening screws 26 again, so that the gap between the valve cover 5 and the valve rod 6 is sealed again. The packing press ring 15, the first sealing packing 16, the packing gasket 17 and the second sealing packing 24 all adopt annular structures. The packing press ring 15, the first sealing packing 16, the packing gasket 17 and the second sealing packing 24 are all sleeved on the valve rod 6.

Go up flange 8 on be provided with motor fixed disk 18, be provided with valve rod drive nut 19 on going up the valve rod 6 in the flange 8, be provided with screw thread portion on the valve rod 6, screw thread portion and 19 threaded connection of valve rod drive nut, be provided with connecting bearing 20 between valve rod drive nut 19 and the last flange 8, the inner ring and the drive nut 19 fixed connection of connecting bearing 20, the outer loop and the last flange 8 fixed connection of connecting bearing 20, realized prescribing a limit to connecting bearing 20's position through set up connecting bearing 20 between valve rod drive nut 19 and last flange 8, also reduced the resistance that receives of drive nut 19 when driving the motion of valve rod 6 simultaneously. A driving claw 21 is arranged on the valve rod 6 in the motor fixing disc 18, and a driving rod 22 is arranged between the driving claw 21 and the valve rod driving nut 19. Drive pawl 21 adopt the open end to be located the tubbiness structure of below, motor fixed disk 18 on be provided with driving motor 27, driving motor 27's output and the top transmission of drive pawl 21 are connected, drive slot 28 has been seted up on the open end of drive pawl 21, the top suit of actuating lever 22 is on drive slot 28, actuating lever 22 and valve rod drive nut 19 fixed connection, the quantity of drive slot 28 adopt a plurality of, a plurality of drive slot 28 is star evenly distributed in the outside of valve rod 6, actuating lever 22 and drive slot 28 one-to-one. The driving force of the driving motor 27 is more conveniently and uniformly transmitted to the valve stem driving nut 19 through the plurality of driving clamping grooves 28 arranged on the driving pawl 21 and the plurality of driving rods 22 arranged on the valve stem driving nut 19.

And rubber sealing rings 23 are respectively arranged between the valve body 1 and the valve seat 2, between the pressure pipe 4 and the valve body 1 and between the pressure pipe 4 and the valve cover 5. The rubber packing 23 has an annular structure made of a rubber material. The leakage of the medium from the gap between the valve body 1 and the valve seat 2, the gap between the pressure pipe 4 and the valve body 1, and the gap between the pressure pipe 4 and the valve cover 5 is reduced.

The use method of the product is as follows: as shown in fig. 1, 2, 3 and 4, the product is installed at a preset installation position in the system in formal use. When the product is required to be opened, firstly, the driving motor 27 is opened, the driving motor 27 drives the driving claw 21 to rotate, the driving claw 21 drives the valve rod driving nut 19 to rotate under the limit of the connecting bearing 20 through the driving rod 22 so as to drive the valve rod 6 to move upwards, the valve rod 6 upwards drives the throttle valve clack 13 to move upwards, a medium enters the inner cavity of the valve body 1 from the inlet end of the valve body, then the medium enters the inlet hole 7 through a plurality of throttling of one level of the throttling device, then the medium is discharged from the outlet end of the valve body through the outlet hole 3, a worker can finish the opening process of the product by closing the driving motor 27 by observing the position of the limit guide plate 10 on the scale layer 11 on the connecting rod 9 after the limit guide plate 10 reaches the preset position on the scale layer 11.

When the product needs to be closed, the driving motor 27 is turned on, the driving pawl 21 is driven by the driving motor 27 to rotate reversely so as to drive the valve rod 6 to move downwards, and the valve rod 6 drives the throttle valve clack 13 to move downwards to be attached to the sealing surface, so that a sealing state is achieved.

Through the embodiment, the size of the gap opened between the valve clack and the sealing surface is determined by observing the position change of the limiting guide plate 10 on the scale layer 11 and indicating the position of the valve clack to move by combining the limiting guide plate 10 arranged on the connecting rod 9 and the valve rod 6 with the scale layer 11 arranged on the connecting rod 9, and the valve is simple in mechanical structure, economical and practical and convenient to popularize and apply on a large scale.

The utility model discloses a satisfy the poor governing valve of high pressure in governing valve field worker needs, make the utility model discloses extensive market prospect has.

Claims

1. A high differential pressure governing valve which characterized in that: comprises a valve body (1), the valve body (1) comprises a valve body inlet end and a valve body outlet end, a valve seat (2) is arranged in the valve body (1), an outlet hole (3) is formed in the bottom of the valve seat (2), a pressure pipe (4) is sleeved in the valve body (1) above the valve seat (2), a valve cover (5) is arranged above the pressure pipe (4), a valve rod (6) is arranged on the valve cover (5), the pressure pipe (4) and the valve seat (2), an inlet hole (7) is formed in the pressure pipe (4), throttling devices are arranged on the valve seat (2) and the valve rod (6), the throttling devices are communicated with the valve body outlet end through the outlet hole (3), the valve body inlet end is communicated with the throttling devices through the inlet hole (7), an upper connecting disc (8) is arranged on the valve rod (6) above the valve cover (5), and a connecting rod (9) is arranged between the upper connecting disc (8) and the valve cover (5), the valve rod (6) and the connecting rod (9) are provided with a limiting guide plate (10), the limiting guide plate (10) is movably connected with the connecting rod (9), and the connecting rod (9) is provided with a scale layer (11).

2. The high differential pressure regulator valve according to claim 1, wherein: the throttling device comprises a throttling cavity (12) and a throttling valve clack (13), the throttling cavity (12) is positioned on the valve seat (2), the throttling valve clack (13) is positioned on the valve rod (6) in the throttling cavity (12), and the outlet hole (3) is communicated with the inlet hole (7) through the throttling cavity (12).

3. The high differential pressure regulator valve according to claim 1, wherein: the top of valve gap (5) seted up valve rod seal groove (14), valve rod seal groove (14) are from last to having set gradually packing clamping ring (15), first sealed packing (16) and packing ring (17) down.

4. The high differential pressure regulator valve according to claim 1, wherein: the automatic valve rod connecting device is characterized in that a motor fixing disc (18) is arranged on the upper connecting disc (8), a valve rod driving nut (19) is arranged on a valve rod (6) in the upper connecting disc (8), a connecting bearing (20) is arranged between the valve rod driving nut (19) and the upper connecting disc (8), a driving claw (21) is arranged on the valve rod (6) in the motor fixing disc (18), and a driving rod (22) is arranged between the driving claw (21) and the valve rod driving nut (19).

5. The high differential pressure regulator valve according to claim 1, wherein: and rubber sealing rings (23) are respectively arranged between the valve body (1) and the valve seat (2), between the pressure pipe (4) and the valve body (1) and between the pressure pipe (4) and the valve cover (5).

6. The high differential pressure regulator valve according to claim 2, wherein: the quantity of the throttling devices adopts a plurality of throttling devices which are sequentially and uniformly distributed on the valve seat (2) along the top end of the valve seat (2) to the bottom end direction of the valve seat (2).

7. The high differential pressure regulator valve of claim 3, wherein: the packing press ring (15) and first sealed packing (16) between and first sealed packing (16) and packing washer (17) between all be provided with second sealed packing (24), the top cover of packing press ring (15) be equipped with packing clamp plate (25), be provided with fastening screw (26) on packing clamp plate (25) and valve gap (5), the quantity of fastening screw (26) adopts a plurality of.

8. The high differential pressure regulator valve of claim 4, wherein: the driving claw (21) adopts a barrel-shaped structure with an open end positioned below, a driving motor (27) is arranged on a motor fixing disc (18), the output end of the driving motor (27) is in transmission connection with the top of the driving claw (21), a driving clamping groove (28) is formed in the open end of the driving claw (21), and the top end of a driving rod (22) is sleeved on the driving clamping groove (28).