CN210153242U

CN210153242U - Regulating valve with pressure reducing and noise reducing functions

Info

Publication number: CN210153242U
Application number: CN201920615348.XU
Authority: CN
Inventors: 王玮
Original assignee: Nanjing Wuzhong Automation Engineering Co Ltd
Current assignee: Nanjing Wuzhong Automation Engineering Co Ltd
Priority date: 2019-04-30
Filing date: 2019-04-30
Publication date: 2020-03-17
Anticipated expiration: 2029-04-30

Abstract

The utility model provides a governing valve with function of making an uproar falls in decompression includes pneumatic membrane actuating mechanism, installs at the support of pneumatic membrane actuating mechanism below, is located the inside valve rod of support, is located the last valve gap of support below, installs valve body, the case of fixed connection in the valve rod bottom of last valve gap below, is located the inside disk seat of valve body, connects the bolt of connecting valve gap and valve body, install a plurality of valve cage in the valve body, a plurality of valve cage forms the decompression noise reduction effect of one-level to level four through different compound mode. The utility model discloses governing valve with function of making an uproar falls in decompression makes the decompression progression can be adjusted between one-level to the level four through the combination of a plurality of valve cage, can eliminate or noise abatement and cavitation destruction in the differential pressure is less than 7Mpa environment, and valve cage simple structure, with low costs, change easily moreover.

Description

Regulating valve with pressure reducing and noise reducing functions

[ technical field ] A method for producing a semiconductor device

The utility model relates to an industrial automation control field specifically is a governing valve with function of making an uproar falls in decompression.

[ background of the invention ]

The regulating valve plays a central role in the fluid industry, and along with the improvement of requirements of energy conservation and emission reduction, benefit improvement, continuous and stable operation and the like of the device, the regulating valve is required to have good service performance. In many places where hydraulic machines exist, it is often seen that wear marks, deep grooves and pits are generated in parts such as a valve element and a valve seat of a regulating valve, and these are mostly caused by cavitation generated by cavitation. Cavitation is a hydraulic flow phenomenon, mostly caused by over-fast pressure reduction, forms blocking flow behind a valve, generates cavitation bubbles when the pressure is lower than saturated vapor pressure in the pressure recovery process due to the over-fast pressure reduction, and generates rupture when the pressure is higher than the saturated vapor pressure in the pressure recovery process, kinetic energy generated by the rupture of the cavitation bubbles is very large, the material of a valve inner part can be rapidly destroyed, noise and vibration are generated, so that damage to equipment is caused, and the service performance and the service life of a regulating valve are seriously influenced.

Therefore, the problem to be solved in the field is to provide a regulating valve with the pressure reducing and noise reducing functions.

[ Utility model ] content

To the above problem, the utility model discloses governing valve with function of making an uproar falls in decompression makes the decompression progression can be adjusted between one-level to the level four through the combination of a plurality of valve cage, can eliminate or noise abatement and cavitation destruction in the differential pressure is less than 7Mpa environment, and valve cage simple structure, with low costs, change easily moreover.

In order to solve the problem, the utility model discloses governing valve with function of making an uproar falls in decompression includes pneumatic film actuating mechanism, installs at the support of pneumatic film actuating mechanism below, is located the inside valve rod of support, is located the last valve gap of support below, installs at the case of valve body, fixed connection in the valve rod bottom of last valve gap, is located the inside disk seat of valve body, connects the bolt of connecting valve gap and valve body, install a plurality of valve cage in the valve body, a plurality of valve cage forms the decompression noise reduction effect of one-level to level four through different compound mode.

Further, a valve cage is arranged in the valve body, the valve cage is of a cylindrical structure, a plurality of small holes for fluid to pass through are formed in the wall of the valve cage, and the valve cage is compressed between the upper valve cover and the valve seat through bolts, so that the effect of reducing pressure and noise at one level is achieved.

Further, two valve cages are arranged in the valve body, each valve cage is of a cylindrical structure, a plurality of small holes for fluid to pass through are formed in the wall of each valve cage, and the valve cages are compressed between the upper valve cover and the valve seat through bolts on the upper valve cover, so that the two-stage pressure reduction and noise reduction effects are achieved.

Furthermore, a spacing ring is arranged between the two valve cages, and small holes formed in the two valve cages are arranged in a staggered mode.

Further, have two valve cages in the valve body, and all set up the aperture that a plurality of supplied fluid to pass on two valve cages, one of them valve cage is cylindric structure to compress tightly the valve cage between last valve gap and disk seat through the bolt, another valve cage is the structure of cover cup, and detachable connects in the below of disk seat 7, with this tertiary decompression noise reduction effect that reaches.

Further, have three valve cage in the valve body, and all set up the aperture that a plurality of supplied fluid to pass on the three valve cage, compress tightly two of them valve cages between last valve gap and disk seat through the bolt, the third valve cage is the structure of cover cupped to connect in the below of disk seat through connecting piece detachable.

Furthermore, the valve core and the valve rod are of an integrally formed structure, so that connection failure of a split structure due to vibration is avoided, and safety accidents caused by falling of the valve core are prevented.

Furthermore, the valve core is an all-metal sealing valve core, and a polytetrafluoroethylene soft material is arranged on the working surface of the valve core, so that a VI-level leakage standard soft sealing structure is formed.

Furthermore, the utility model discloses governing valve with function of making an uproar falls in decompression makes the decompression progression can be adjusted between one-level to the level four through the combination of a plurality of valve cage, can eliminate or noise abatement and cavitation destruction in the differential pressure is less than 7Mpa environment, and valve cage simple structure, with low costs, change easily moreover.

[ description of the drawings ]

Fig. 1 is the utility model discloses the level four decompression of governing valve with the function of making an uproar falls in the decompression falls the schematic diagram of making an uproar.

Fig. 2 is the utility model discloses the tertiary decompression of governing valve with function of making an uproar falls in decompression falls the schematic diagram of making an uproar.

Fig. 3 is the utility model discloses the second grade decompression of governing valve with the function of making an uproar falls in the decompression falls the schematic diagram of making an uproar.

Fig. 4 is the utility model discloses the one-level decompression of governing valve with function of making an uproar falls in the decompression falls the schematic diagram of making an uproar.

[ detailed description ] embodiments

The directional terms of the present invention, such as "up", "down", "front", "back", "left", "right", "inner", "outer", "side", etc., are only directions in the drawings, and are only used for explaining and explaining the present invention, but not for limiting the scope of the present invention.

Referring to fig. 1 to 4, the utility model discloses governing valve with function of making an uproar falls in decompression's component structure is given, it includes that it includes pneumatic film actuating mechanism 1 that is located the governing valve top, install support 2 in pneumatic film actuating mechanism below, be located support inside valve rod 3, be located support below last valve gap 4, install valve body 5, the case 6 of fixed connection in the valve rod 3 bottom of last valve gap, be located the inside disk seat 7 of valve body. The bottom of the pneumatic membrane actuating mechanism 1 is fixedly connected with the top of the support 2, and the valve rod 3 is connected to the pneumatic membrane actuating mechanism 1 after penetrating through the support 2, so that the pneumatic membrane actuating mechanism 1 can reciprocate up and down under the action of the pneumatic membrane actuating mechanism 1. Go up valve gap 4 and pass through bolt 8 and valve body 5 fixed connection, and install valve gap seal gasket 9 on the contact surface between last valve gap 4 and valve body 5, case 6 and valve rod 3 structure as an organic whole avoids split type structure to lead to connecting failure because of the vibration, prevents that the valve core head from droing and leading to the incident, just case 6 is the all-metal seal case, installs the soft material of polytetrafluoroethylene on its working face to this forms the soft seal structure of VI level leakage standard, valve body 5 is inside still to install a plurality of valve cage 10, forms the decompression noise reduction effect of one-level to level four through the combination of different valve cages. The pneumatic membrane actuating mechanism 1 outputs power to drive the valve rod 3 and the valve core 6 to reciprocate, the valve core 3 moves downwards and is in contact with the valve seat 7, then fluid in the valve body 5 is cut off by applying certain sealing force to form a closed state, and when the valve rod and the valve core are lifted upwards, the position relation between the valve core and the valve seat is changed, so that the flow and the pressure of the fluid in the valve body are changed, and the adjusting and controlling functions of the control valve are realized.

Referring to fig. 4, the utility model discloses the one-level decompression of governing valve with function of making an uproar falls in the decompression falls the schematic diagram of making an uproar, a valve cage 10 has been had in the valve body, valve cage 10 is cylindric structure, sets up the aperture that a plurality of supplied fluid to pass on its section of thick bamboo wall, compresses tightly the valve cage between last valve gap 4 and disk seat through bolt 8 on last valve gap 4.

Referring to fig. 3, the utility model discloses the schematic diagram of making an uproar falls in second grade decompression of governing valve with function of making an uproar falls in the decompression, two valve cages 10 have in the valve body, valve cage 10 is cylindric structure, sets up the aperture that a plurality of supplied fluid to pass on its section of thick bamboo wall, compresses tightly the valve cage between last valve gap 4 and disk seat through bolt 8 on last valve gap 4. The valve cage on the outside and the valve cage on the inside are separated by the upper and lower spacing rings 11, and the small holes formed in the two valve cages are arranged in a staggered manner, so that fluid flows through the small holes to form jet flow which is then dispersed on the next valve cage, and the fluid cannot be directly sprayed out from the small holes in the two valve cages, thereby playing the roles of blocking the fluid and reducing the pressure.

Referring to fig. 2, the utility model discloses the schematic diagram of making an uproar falls in tertiary decompression of governing valve with function of making an uproar falls in decompression, two valve cages 10 have in the valve body, and all set up the aperture that a plurality of supplied fluid to pass on two valve cages, one of them valve cage is cylindric structure to compress tightly the valve cage between last valve gap 4 and disk seat 7 through bolt 8, another valve cage is the structure of cover cup-shape, and connects in the below of disk seat 7 through connecting piece detachable.

Referring to fig. 1, the utility model discloses the level four decompression of governing valve with function of making an uproar falls in the decompression falls the schematic diagram of making an uproar, three valve cage 10 has been had in the valve body, and all sets up the aperture that a plurality of supplied fluid to pass on the three valve cage, compresses tightly two of them valve cage between upper valve cover 4 and disk seat 7 through bolt 8 on the upper valve cover 4. The valve cage on the outer side and the valve cage on the inner side are separated by an upper spacer ring 10 and a lower spacer ring 10, small holes formed in the two valve cages are arranged in a staggered mode, and the valve cage of the third valve cage is of a sleeve-cup-shaped structure and is detachably connected below the valve seat 7 through a connecting piece. The utility model discloses governing valve with function of making an uproar falls in decompression makes the decompression progression can be adjusted between one-level to the level four through the combination of a plurality of valve cage, can eliminate or noise abatement and cavitation destruction in the differential pressure is less than 7Mpa environment, and valve cage simple structure, with low costs, change easily moreover.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a governing valve with function of making an uproar falls in decompression, its characterized in that, governing valve with function of making an uproar falls in decompression includes pneumatic film actuating mechanism (1), installs support (2) in pneumatic film actuating mechanism below, is located inside valve rod (3) of support, is located last valve gap (4) of support below, installs valve body (5) in last valve gap below, case (6) of fixed connection in valve rod (3) bottom, is located inside disk seat (7) of valve body, connects bolt (8) of connecting valve gap and valve body, install a plurality of valve cage (10) in valve body (5), a plurality of valve cage (10) form the decompression noise reduction effect of one-level to level four through the different compound mode.

2. The regulating valve with the pressure reducing and noise reducing functions as claimed in claim 1, wherein a valve cage (10) is arranged in the valve body (5), the valve cage (10) is of a cylindrical structure, a plurality of small holes for fluid to pass through are formed in the wall of the valve cage, and the valve cage is compressed between the upper valve cover and the valve seat through bolts (8), so that the primary pressure reducing and noise reducing effects are achieved.

3. The regulating valve with the pressure reducing and noise reducing functions as claimed in claim 1, wherein two valve cages (10) are arranged in the valve body (5), the valve cages are both cylindrical structures, a plurality of small holes for fluid to pass through are formed in the cylinder wall of each valve cage, and the valve cages are compressed between the upper valve cover and the valve seat through bolts on the upper valve cover, so that two-stage pressure reducing and noise reducing effects are achieved.

4. A regulating valve with pressure reducing and noise reducing functions according to claim 3, characterized in that a spacing ring (11) is installed between the two valve cages (10), and the small holes formed on the two valve cages are arranged in a staggered manner.

5. The regulating valve with the pressure reducing and noise reducing functions according to claim 1, wherein two valve cages (10) are arranged in the valve body, and a plurality of small holes for fluid to pass through are formed in each of the two valve cages, one of the valve cages is of a cylindrical structure and is compressed between the upper valve cover (4) and the valve seat (7) through bolts (8), and the other valve cage is of a sleeve-cup-shaped structure and is detachably connected below the valve seat (7), so that three-level pressure reducing and noise reducing effects are achieved.

6. A regulating valve with pressure reducing and noise reducing functions according to claim 1, wherein three valve cages (10) are arranged in the valve body (5), a plurality of small holes for fluid to pass through are formed in each of the three valve cages, two of the three valve cages are compressed between the upper valve cover and the valve seat through bolts (8), and the third valve cage is of a sleeve-cup-shaped structure and is detachably connected below the valve seat through a connecting piece.

7. The regulating valve with the pressure reducing and noise reducing functions according to claim 1, wherein the valve core (6) and the valve rod (3) are of an integrally formed structure, so that connection failure of a split structure due to vibration is avoided, and safety accidents caused by falling of the valve core are prevented.

8. The regulating valve with the pressure reducing and noise reducing functions as claimed in claim 1, wherein the valve core (6) is an all-metal sealing valve core, and polytetrafluoroethylene soft material is installed on the working surface of the valve core, so that a soft sealing structure with a VI-level leakage standard is formed.