CN210290770U - Axial flow valve - Google Patents
Axial flow valve Download PDFInfo
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- CN210290770U CN210290770U CN201921055239.3U CN201921055239U CN210290770U CN 210290770 U CN210290770 U CN 210290770U CN 201921055239 U CN201921055239 U CN 201921055239U CN 210290770 U CN210290770 U CN 210290770U
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Abstract
The valve body of the axial flow valve is internally provided with a valve inner body which is connected with a guide sleeve, the guide sleeve is internally provided with a piston rod, the piston rod is connected with a valve core, the valve inner body is connected with a valve cage which is connected with a valve seat, the valve seat is arranged at the port of the valve body, the valve core is arranged in the valve cage, the valve body is also provided with a valve rod, the valve rod is in meshing transmission connection with helical teeth of the piston rod, a first shaft universal plug seal is arranged between the valve cage and the valve inner body, a rotary universal plug seal and a second shaft universal plug seal are arranged between the valve cage and the valve seat, the valve core is in sealing fit with the first shaft universal plug seal, the valve core is in sealing fit; the piston rod is provided with a hole which is hermetically matched with the guide sleeve by using a universal plug seal, the guide sleeve is provided with a universal plug seal for a third shaft, and the universal plug seal for the third shaft is hermetically matched with the piston rod; the new sealing matching mode ensures that the valve cannot leak when being completely closed and has no internal leakage in two directions; the piston rod and the guide sleeve are sealed by matching the hole-used general plug seal and the shaft-used general plug seal, so that the leakage of a medium between the piston rod and the guide sleeve is isolated, the requirement on the filler is reduced, and even the filler is not needed.
Description
Technical Field
The utility model relates to an adjusting control valve, in particular to axle flow valve among the adjusting control valve.
Background
At present, control valves used on natural gas, oil products, water, gas and other long transmission pipelines are mainly pipeline ball valves. The pipeline ball valve has good closing performance, high leakage level and large caliber, but has the advantages of complex and heavy structure, large driving force, fast component abrasion, multiple leakage points, high maintenance cost and high manufacturing cost. The use space of the large-caliber or ultra-large-caliber and high-pound-grade pipeline ball valve product is bound. In the process of closing and opening the valve, the pipeline ball valve cannot eliminate or reduce the erosion of the ultrahigh-speed medium to the surfaces of the valve seat, the valve core and the valve body, and cannot structurally avoid and solve the permanent damage of flash evaporation and cavitation to the valve components.
The axial flow valve is widely applied to long transmission pipelines of natural gas, oil products and other liquids by the unique structure and product advantages. The shaft flow valve has the unique flash evaporation and cavitation resistant structure, is more suitable for controlling high-pressure fluid, and has longer service life and extremely high cost performance. The medium flow channel between the valve body and the valve inner body of the axial flow valve is in a circular streamline shape, and the fluid cannot generate any turbulence, vortex and bubble phenomena in the valve cavity. The flow resistance coefficient is reduced, the capacity loss is reduced, and the phenomena of vibration, noise and cavitation are reduced. The valve core, the valve seat, the valve cage and other valve internals are arranged along the flow path direction of the fluid, so that the medium energy loss is reduced, the flow path is smooth, and no corner or dead angle exists. The leak-proof design of the valve is of critical importance.
SUMMERY OF THE UTILITY MODEL
In view of the technical problem that exists among the background art, the utility model provides a technical problem that solves aims at providing a prevent the higher axial flow valve of leakage grade.
In order to solve the technical problem, the utility model discloses a following technical scheme: axial-flow valve, including the valve body, have the valve endosome in the valve body, the valve endosome even has the guide pin bushing, is equipped with the piston rod in the guide pin bushing, and the case is connected to the piston rod, and the valve cage is connected to the valve endosome, and the disk seat is connected to the valve cage, and the disk seat setting is in the port department of valve body, and the case setting still is equipped with the valve rod on the valve body, and the valve rod is connected its characterized in that with the oblique tooth meshing transmission of: a first shaft universal plug seal is arranged between the valve cage and the valve inner body, a rotary universal plug seal and a second shaft universal plug seal are arranged between the valve cage and the valve seat, the valve core is in sealing fit with the first shaft universal plug seal, the valve core is in sealing fit with the rotary universal plug seal, and the second shaft universal plug seal is in sealing fit with the valve body; the piston rod is provided with a hole-used general plug seal, the hole-used general plug seal is in sealing fit with the guide sleeve, the guide sleeve is provided with a third shaft-used general plug seal, and the third shaft-used general plug seal is in sealing fit with the piston rod.
The rear end of the valve inner body is provided with a first step ring, the front end of the valve cage is provided with a second step ring, the first step ring is matched with the second step ring, the first shaft is positioned between the first step ring and the second step ring by using a universal plug seal, the rear end of the valve cage is provided with a third step ring, the front end of the valve seat is provided with an inner step ring and an outer step ring, the rotary universal plug seal is arranged between the third step ring and the inner step ring, and the second shaft is arranged between the third step ring and the outer step ring by using the universal plug seal.
The front end of the piston rod is provided with a step mounting ring, the hole flooding plug sealing sleeve is arranged on the step mounting ring, the front end of the piston rod is also provided with a support ring and a shaft snap spring, the support ring is arranged on the front side of the hole flooding plug sealing sleeve, and the shaft snap spring is arranged on the front side of the support ring; the rear end of the guide sleeve is provided with a step mounting hole, the third shaft is arranged in the step mounting hole through the universal plug seal, the rear end of the guide sleeve is also connected with a pressing ring, the pressing ring is arranged on the rear side of the third shaft through the universal plug seal, and a locking fastener is arranged between the pressing ring and the guide sleeve.
The utility model has the advantages that the sealing combination matching mode among the valve core, the valve cage, the valve seat and the valve body ensures that the axial flow valve can not leak when being completely closed, the sealing grade is high, and the bidirectional leakage is avoided; the piston rod and the guide sleeve are sealed in a matched mode through the hole and the flooding plug seal for the third shaft, the medium is isolated from the connection between the piston rod and the guide sleeve and the outside, the effect of no leakage is achieved, the requirement for valve rod packing is lowered, and even the valve rod packing is not needed. These above structural features enhance the leak-proof rating of the axial flow valve.
Drawings
The following describes details and operational principles of embodiments and examples of the present invention with reference to the drawings.
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is an enlarged view of a in fig. 1.
Fig. 3 is an enlarged view of B in fig. 1.
FIG. 4 is a schematic diagram of the assembly structure of the valve core, the valve cage, the valve inner body and the valve seat.
In the figure: 1 valve body, 2 valve seats, 3 valve cores, 4 valve rods, 5 guide sleeves, 6 valve cages, 7 valve rods, 8 valve inner bodies, 9 a flooding plug seal for a first shaft, 10 a rotating flooding plug seal, 11 a flooding plug seal for a second shaft, 12 holes, 13 a flooding plug seal for a third shaft, 14 support rings, 15 clamp springs for shafts, 16 press rings and 17 locking fasteners.
Detailed Description
Refer to the attached drawing, axle flow valve in this embodiment, including the valve body, has the valve endosome in the valve body, the valve endosome even has the guide pin bushing, is equipped with the piston rod in the guide pin bushing, and the case is connected to the piston rod, and the valve cage is connected to the valve endosome, and the disk seat is connected to the valve cage, and the disk seat setting is in the port department of valve body, and the case setting still is equipped with the valve rod on the valve body, and the valve rod is connected with the oblique tooth meshing transmission of piston rod, and this is prior art, the utility model discloses aim at strengthening piston rod and guide pin bushing, the sealed effect between case and cage.
A first shaft universal plug seal is arranged between the valve cage and the valve inner body, a rotary universal plug seal and a second shaft universal plug seal are arranged between the valve cage and the valve seat, the valve core is in sealing fit with the first shaft universal plug seal, the valve core is in sealing fit with the rotary universal plug seal, and the second shaft universal plug seal is in sealing fit with the valve body; the sealing combination matching mode (triple sealing) among the valve core, the valve cage, the valve seat and the valve body ensures that the axial flow valve cannot leak when being completely closed, the sealing grade is high, no internal leakage exists in two directions, and the forward and reverse sealing effects are ensured; the valve cage, the valve seat and the valve core are in rotary type general plug seal sealing fit, and the zero-leakage sealing effect can be achieved without increasing thrust. The first shaft will be on the inside with a flood plug seal and a rotating flood plug seal and the second shaft will be on the outside with a flood plug seal.
In addition, the piston rod is provided with a hole-used universal plug seal, the hole-used universal plug seal is in sealing fit with the guide sleeve, the guide sleeve is provided with a third shaft-used universal plug seal, the third shaft-used universal plug seal is in sealing fit with the piston rod, the piston rod adopts a static and dynamic combined sealing mode with the hole-used universal plug seal in the guide sleeve through the third shaft-used universal plug seal, the leakage of a medium from the valve rod is isolated, the medium is isolated from the connection between the piston rod and the guide sleeve and the outside, the effect of no leakage is achieved, the requirement on valve rod packing is lowered, and even the valve rod packing is not needed. These above structural features enhance the leak-proof rating of the axial flow valve.
The rear end of the valve inner body is provided with a first step ring, the front end of the valve cage is provided with a second step ring, the first step ring is matched with the second step ring, the first shaft is positioned between the first step ring and the second step ring by the universal plug seal, and the first step ring is matched with the second step ring to be sleeved and form a groove for mounting the universal plug seal for the first shaft. The rear end of valve cage is equipped with the third step circle, interior step circle and outer step circle are established to the front end of disk seat, rotary-type general stopper seals the configuration between third step circle and interior step circle, the third step circle cooperatees with interior step circle to overlap and establishes and form the recess that supplies rotary-type general stopper to seal the installation, the bottom extension that fixed rotary-type general stopper was sealed can be cliied in the cooperation to third step circle and interior step circle even further optimization when forming the recess, prevent rotary-type general stopper to seal rotatory deformation, the secondary shaft seals the configuration between third step circle and outer step circle with general stopper, the third step circle cooperatees with outer step circle to overlap and establishes and form the recess that supplies the secondary shaft to seal the installation with general stopper. Convenient processing, convenient assembly and good sealing effect,
the front end of the piston rod is provided with a step mounting ring, the hole flooding plug sealing sleeve is arranged on the step mounting ring, the front end of the piston rod is also provided with a support ring and a shaft snap spring, the support ring is arranged on the front side of the hole flooding plug sealing sleeve, and the shaft snap spring is arranged on the front side of the support ring; the support ring is fixed through the clamp spring for the shaft, the hole is limited on the outer step mounting ring through the support ring, and the hole loaded on the piston rod is ensured to have no leakage with the guide sleeve in the moving process by the hole. The rear end of the guide sleeve is provided with a step mounting hole, the third shaft is arranged in the step mounting hole by using a universal plug seal, the rear end of the guide sleeve is also connected with a pressing ring, the pressing ring is arranged at the rear side of the third shaft by using the universal plug seal, and a locking fastener (such as a screw) is arranged between the pressing ring and the guide sleeve; and the third shaft loaded on the guide sleeve is sealed by a universal plug to ensure that no leakage exists between the piston rod and the guide sleeve in the process of moving. The assembly structure is simple, the operation is convenient, and the disassembly is convenient. The edge of the pressing ring can be protruded to form a raised ring, the outer ring of the guide sleeve can be recessed to be matched with the raised ring, the positioning effect is good, and the assembly is more convenient.
Claims (3)
1. Axial-flow valve, including the valve body, have the valve endosome in the valve body, the valve endosome even has the guide pin bushing, is equipped with the piston rod in the guide pin bushing, and the case is connected to the piston rod, and the valve cage is connected to the valve endosome, and the disk seat is connected to the valve cage, and the disk seat setting is in the port department of valve body, and the case setting still is equipped with the valve rod on the valve body, and the valve rod is connected its characterized in that with the oblique tooth meshing transmission of: a first shaft universal plug seal is arranged between the valve cage and the valve inner body, a rotary universal plug seal and a second shaft universal plug seal are arranged between the valve cage and the valve seat, the valve core is in sealing fit with the first shaft universal plug seal, the valve core is in sealing fit with the rotary universal plug seal, and the second shaft universal plug seal is in sealing fit with the valve body; the piston rod is provided with a hole-used general plug seal, the hole-used general plug seal is in sealing fit with the guide sleeve, the guide sleeve is provided with a third shaft-used general plug seal, and the third shaft-used general plug seal is in sealing fit with the piston rod.
2. The axial flow valve of claim 1, wherein: the rear end of the valve inner body is provided with a first step ring, the front end of the valve cage is provided with a second step ring, the first step ring is matched with the second step ring, the first shaft is positioned between the first step ring and the second step ring by using a universal plug seal, the rear end of the valve cage is provided with a third step ring, the front end of the valve seat is provided with an inner step ring and an outer step ring, the rotary universal plug seal is arranged between the third step ring and the inner step ring, and the second shaft is arranged between the third step ring and the outer step ring by using the universal plug seal.
3. The axial flow valve of claim 1, wherein: the front end of the piston rod is provided with a step mounting ring, the hole flooding plug sealing sleeve is arranged on the step mounting ring, the front end of the piston rod is also provided with a support ring and a shaft snap spring, the support ring is arranged on the front side of the hole flooding plug sealing sleeve, and the shaft snap spring is arranged on the front side of the support ring; the rear end of the guide sleeve is provided with a step mounting hole, the third shaft is arranged in the step mounting hole through the universal plug seal, the rear end of the guide sleeve is also connected with a pressing ring, the pressing ring is arranged on the rear side of the third shaft through the universal plug seal, and a locking fastener is arranged between the pressing ring and the guide sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921055239.3U CN210290770U (en) | 2019-07-08 | 2019-07-08 | Axial flow valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921055239.3U CN210290770U (en) | 2019-07-08 | 2019-07-08 | Axial flow valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210290770U true CN210290770U (en) | 2020-04-10 |
Family
ID=70101094
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921055239.3U Active CN210290770U (en) | 2019-07-08 | 2019-07-08 | Axial flow valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210290770U (en) |
-
2019
- 2019-07-08 CN CN201921055239.3U patent/CN210290770U/en active Active
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