CN209839220U - Manual cross valve of low temperature - Google Patents
Manual cross valve of low temperature Download PDFInfo
- Publication number
- CN209839220U CN209839220U CN201920528834.8U CN201920528834U CN209839220U CN 209839220 U CN209839220 U CN 209839220U CN 201920528834 U CN201920528834 U CN 201920528834U CN 209839220 U CN209839220 U CN 209839220U
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- China
- Prior art keywords
- valve body
- passage
- rotating shaft
- valve
- low temperature
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- Expired - Fee Related
Links
- 238000007789 sealing Methods 0.000 claims description 24
- -1 polytetrafluoroethylene Polymers 0.000 claims description 13
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 11
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 11
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000005381 potential energy Methods 0.000 abstract description 13
- 239000007788 liquid Substances 0.000 abstract description 8
- 238000001125 extrusion Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000005574 cross-species transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
Landscapes
- Temperature-Responsive Valves (AREA)
Abstract
The utility model discloses a manual cross valve of low temperature, the high-pressure check valve comprises an upper valve body, lower valve body, the apparatus further comprises a rotating shaft, case and interface, it is the open-ended casing to go up the valve body, lower valve body is equipped with four interfaces, it is the axisymmetric structure with lower valve body to go up the valve body, the pivot is from last to the central line that passes valve body and lower valve body down, the pivot has the shoulder, the outer circumference and the last valve body inner wall of pivot shoulder connect, the periphery at pivot shoulder encloses the lower portion of following that is equipped with downward edgewise extension, should meet along outside surface and last valve body inner wall down, case and lower valve body meet, cup joint the dish spring in the pivot, the dish spring forms the extrusion potential energy by pivot. The utility model relates to a manual cross valve of this kind of low temperature has increased the dish spring between valve body and the case, and the dish spring is after bearing the load deformation, and the certain potential energy of deposit when case contact cryogenic liquids shrink, dish spring release part potential energy reaches sealed requirement between with guaranteeing valve body and the case.
Description
Technical Field
The utility model belongs to the technical field of two-position four-way valve, concretely relates to manual cross valve of low temperature.
Background
The four-way plug valve opening and closing piece generally adopts a cylindrical handle, and the pulling handle rotates around an axis vertical to the channel, so that the purpose of opening and closing the channel is achieved. The plug valve is mainly used for opening and closing pipelines and equipment media. The four-way plug valve has the following main advantages: 1. is suitable for frequent operation, and is quick and convenient to open and close. 2. The fluid resistance is small. 3. Simple structure, relatively small volume, light weight and convenient maintenance. 4. The sealing performance is good 5. the sealing device is not limited by the installation direction, and the flow direction of the medium can be arbitrary. 6. No vibration and low noise.
The prior art document discloses a hard sealing four-way rotary valve, which comprises a valve body with four valve ports, wherein a valve cavity penetrating through the valve body and communicated with two ends is arranged in the valve body, the inner diameter of the upper end of the valve cavity is larger than the inner diameter of the lower end of the valve cavity, the cross section of the valve port is conical, the valve port is respectively communicated with the valve cavity, a polytetrafluoroethylene valve core which is in hard sealing and is attached to the inner wall of the valve cavity is arranged in the valve cavity of the valve body, the diameters of the upper end and the lower end of the valve core are respectively larger than the inner diameters of the upper end and the lower end of the valve cavity, so that the upper end of the valve core is arranged outside the valve cavity, two flow channels used for connecting the valve ports are arranged on the valve core, the; an operating handle is fixed at the upper end of the valve core and movably fixed in a valve cavity of the valve body through the handle.
The hard seal four-way valve adopts a conical structure with two communicated ends for the valve cavity and the valve core, and forms hard seal by utilizing the outer wall of the valve core to be attached to the inner wall of the valve cavity, so that the valve can have certain sealing performance at normal temperature, and meanwhile, the valve can be conveniently produced, assembled, disassembled and cleaned; the valve core is made of polytetrafluoroethylene materials, so that particle or powder sundries generated by friction between the valve core and the valve body can be effectively avoided, the chemical reaction between the valve core and a medium can be prevented, the corrosion resistance of the valve core can be improved, the sanitary requirement of the valve during use is ensured, the friction coefficient between the valve core and the valve body is reduced, and the service life of the valve is prolonged. In the experiment, the four-way valve has certain shrinkage performance in a low-temperature state, for a valve body with extremely high precision requirement, the shrinkage means that a gap is reserved, and the water leakage rate of the four-way valve is further improved due to the extremely smooth surface of the four-way valve.
Just like the plug valves on the existing market, the four-way plug valves on the market are sealed in a hard manner by the valve core and the valve body. When the column efficiency test of the chromatographic column is carried out, a four-way valve is needed to adjust the flow rate and the liquid flow direction. When the four-way plug valve contacts low-temperature solution, the valve core of the polytetrafluoroethylene part can shrink slightly, a gap is formed between the valve core and the valve body, the four-way valve leaks due to the shrinkage of the valve core of the polytetrafluoroethylene part, and the solution overflows to distort the test result.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems existing in the prior art, the utility model aims to provide a manual four-way valve of low temperature.
The utility model discloses the technical scheme who adopts does: a low-temperature manual four-way valve comprises an upper valve body, a lower valve body, a rotating shaft, a valve core and interfaces, wherein the upper valve body is a cylindrical shell, one end of the upper valve body is opened, the other end of the upper valve body is closed, the upper valve body is internally used for installing the valve core and a gasket and a sealing ring on the valve core, the opening of the upper valve body is in threaded connection with the lower valve body, the lower valve body is provided with four interfaces, the upper valve body and the lower valve body are in an axisymmetric structure, the rotating shaft penetrates through the center lines of the upper valve body and the lower valve body from top to bottom, the rotating shaft is provided with a shoulder part, the outer circumference of the shoulder part of the rotating shaft is connected with the inner wall of the upper valve body, the shoulder part of the rotating shaft is provided with a lower edge part extending downwards at the outer circumference, the outer side surface of the lower edge part is connected with the inner wall surface of the, the valve core is arranged between the lower edge part and the lower valve body, and the valve core is connected with the upper surface and the lower surface of the lower valve body. The rotating shaft is sleeved with a disc spring, and the disc spring applies force to the shoulder of the rotating shaft and the inner top surface of the upper valve body to form extrusion potential energy.
According to the low-temperature manual four-way valve, the disc spring is additionally arranged between the valve body and the valve core, the disc spring stores certain potential energy after bearing load deformation, and when the valve core is contacted with low-temperature liquid to contract, the disc spring releases partial potential energy to ensure that the sealing requirement between the valve body and the valve core is met.
Further, be equipped with the multilayer gasket between dish spring and the pivot shoulder, the multilayer gasket cup joints in the pivot, and the multilayer gasket includes gasket I and gasket II, and gasket I is the flat pad of stainless steel, and gasket II is the flat pad of polytetrafluoroethylene, and gasket I stacks up in gasket II's top.
Furthermore, the bottom of the rotating shaft is provided with a threaded part, the threaded part is connected with a nut, and the nut is positioned below the lower valve body. The nut is connected with a gasket, and a limiting plate is arranged between the nut and the lower valve body. The washer is arranged between the nut and the limiting plate.
Furthermore, the top of the rotating shaft is provided with a passage indicating line. The path indicator line can display two interfaces that are connected. For example, the four-way valve comprises four passages including a passage I, a passage II, a passage III and a passage IV, when the rotating shaft rotates to the direction of the passage III, the passage I is communicated with the passage IV, the passage II is communicated with the passage III, each passage is L-shaped, and each passage is connected with the valve core and the corresponding interface.
For another example, when the shaft is rotated to channel IV, channel I is communicated with channel II, and channel III is communicated with channel IV.
Preferably, the joint between the shoulder of the rotating shaft and the valve core is provided with two O-shaped sealing rings, the O-shaped sealing rings are mainly arranged at the joint between the inner top surface of the shoulder of the rotating shaft and the valve core, the shoulder of the rotating shaft is provided with two sealing ring grooves, and the two sealing ring grooves are arranged by taking the rotating shaft as the center and are respectively arranged at the inner side and the outer side, which is equivalent to two layers of sealing rings.
Preferably, the rotating shaft is connected with a handle, the handle is a cylindrical body, and the handle can drive the rotating shaft to rotate.
Furthermore, the valve core is mainly made of polytetrafluoroethylene.
The utility model relates to a manual cross valve of this kind of low temperature can alleviate the bad situation of the sealed effect of rigid connection, has increased the dish spring between valve body and the case, and the dish spring is bearing the load and warping the back, and the certain potential energy of deposit, when case contact low temperature liquid shrink, dish spring release part potential energy reaches sealed requirement in order to guarantee between valve body and the case.
Drawings
FIG. 1 is a three-dimensional external structure view of a low-temperature manual four-way valve in embodiment 1 of the present invention;
FIG. 2 is a front view of the low temperature manual four-way valve according to embodiment 1 of the present invention;
fig. 3 is a plan view of the low-temperature manual four-way valve according to embodiment 1 of the present invention;
FIG. 4 is a sectional view taken along the line A-A of the low temperature manual four-way valve in accordance with embodiment 1 of the present invention;
FIG. 5 is a sectional view taken along the direction B-B of the low-temperature manual four-way valve in embodiment 1 of the present invention;
FIG. 6 is a cross-sectional view of the low temperature manual four-way valve in the direction of C in embodiment 1 of the present invention;
in the figure: 1-a rotating shaft; 2-a handle: 3-an upper valve body; 4-a lower valve body; 5-disc spring; 6-gasket I; 7-gasket II; 8-sealing ring; 9-a valve core; 10-a limiting plate; 11-a nut; 12-bolt sets; 13-pathway I; 14-pathway II; 15-pathway III; 16-pathway IV.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings and detailed description, but those skilled in the art will understand that the following described embodiments are some, not all, of the embodiments of the present invention, and are only used for illustrating the present invention, and should not be construed as limiting the scope of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In order to prevent the low-temperature liquid leakage phenomenon, the low-temperature manual four-way valve is specially designed, and liquid leakage cannot occur when low-temperature solution is introduced into the valve.
Example 1
As shown in fig. 1, which is a three-dimensional structure diagram of a four-way valve; the four-way valve comprises an upper valve body 3, a lower valve body 4, a rotating shaft 1, a valve core 9 and interfaces, wherein the upper valve body 3 is a shell, the appearance of the upper valve body is cylindrical, gaskets and sealing rings on the valve core 9 and the valve core 9 are arranged inside the upper valve body 3, an opening of the upper valve body 3 is in threaded connection with the lower valve body, the lower valve body 4 is provided with four interfaces, the upper valve body and the lower valve body are in an axisymmetric structure, the rotating shaft penetrates through the center lines of the upper valve body and the lower valve body 4 from top to bottom, the rotating shaft 1 is provided with a shoulder part, the outer circumference of the shoulder part of the rotating shaft is connected with the inner wall of the upper valve body, the shoulder part of the rotating shaft 1 is provided with a lower edge part extending downwards at the outer circumference, the outer side surface of the lower edge is connected with the inner wall of the upper valve body, a cavity is formed between the lower edge part of the upper valve body 3 and the rotating, the valve core 9 is connected with the upper surface and the lower surface of the lower valve body 4. The rotating shaft 1 is sleeved with a disc spring 5, and the disc spring 5 applies force to the rotating shaft shoulder and the inner top surface of the upper valve body to form extrusion potential energy.
The side of the limit plate 10 is provided with a bolt suite 12.
According to the low-temperature manual four-way valve, the disc spring 5 is additionally arranged between the upper valve body 3 and the valve core 9 of the lower valve body 3, the disc spring 5 stores certain potential energy after bearing load deformation, and when the valve core 9 is contacted with low-temperature liquid to contract, the disc spring releases partial potential energy to ensure that the sealing requirement between the lower valve body and the valve core 9 is met.
Be equipped with the multilayer gasket between dish spring 5 and the 1 shoulder of pivot, the multilayer gasket cup joints in the pivot, and the multilayer gasket includes gasket I6 and gasket II7, and gasket I is the flat pad of stainless steel, and gasket II is the flat pad of polytetrafluoroethylene, and gasket I stacks up at gasket II's top.
The bottom of the rotating shaft 1 is provided with a threaded part, the threaded part is connected with a nut 11, and the nut 11 is positioned below the lower valve body. A washer is connected with the nut, and a limit plate 10 is arranged between the nut 11 and the lower valve body 4. The washer is between the nut and the retainer plate 10.
The top of the rotating shaft 1 is provided with a passage indicating line. The path indicator line can display two interfaces that are connected. For example, the four-way valve comprises four passages, including a passage I13, a passage II14, a passage III15 and a passage IV16, when the rotating shaft rotates to the direction of the passage III, the passage I13 is communicated with the passage IV16, the passage II is communicated with the passage III, each passage is L-shaped, and each passage is connected with the valve core and the corresponding interface.
For another example, when the shaft 1 is rotated to the direction of passage IV, passage I13 communicates with passage II14, and passage III15 communicates with passage IV 16.
The joint between the shoulder of the rotating shaft and the valve core is provided with two O-shaped sealing rings which are mainly arranged at the joint between the inner top surface of the shoulder of the rotating shaft and the valve core, the shoulder of the rotating shaft is provided with two sealing ring grooves, and the two sealing ring grooves are respectively arranged at the inner side and the outer side of the rotating shaft as the center and are equivalent to two layers of sealing rings.
Preferably, the rotating shaft 1 is connected with a handle, the handle is a cylindrical body, and the handle can drive the rotating shaft to rotate.
Further, the valve core 9 is mainly made of polytetrafluoroethylene.
The material of the valve core is selected as follows: the valve core 9 is made of polytetrafluoroethylene, and the polytetrafluoroethylene material has the characteristics of acid resistance, alkali resistance and various organic solvents resistance and is almost insoluble in all solvents. Has the characteristic of high temperature resistance, has extremely low friction coefficient, and is suitable for being used as a material of the valve core.
The utility model relates to a manual cross valve of this kind of low temperature, sealing means have also adopted hard seal with the sealing means of current cross plug valve, but sealed effectual, especially overcome when current cross plug valve crosses low temperature solution (2 ℃ -30 ℃), the shrink phenomenon that polytetrafluoroethylene spare case takes place, even if appear the gap between case and the valve body, solution also can not spill over. The further sealing of the water leakage point is completed mainly through a disc spring arranged between the valve body and the valve core. The disc spring stores certain potential energy after bearing load deformation, and when the valve core contacts with low-temperature liquid to contract, the disc spring releases partial potential energy to ensure that the sealing requirement between the valve body and the valve core is met.
The present invention is not limited to the above-mentioned optional embodiments, and any other products in various forms can be obtained by anyone under the teaching of the present invention, and any changes in the shape or structure thereof, all the technical solutions falling within the scope of the present invention, are within the protection scope of the present invention.
Claims (10)
1. The utility model provides a manual cross valve of low temperature which characterized in that: the valve comprises an upper valve body, a lower valve body, a rotating shaft, a valve core and interfaces, wherein the upper valve body is a shell with an opening, the opening of the upper valve body is in threaded connection with the lower valve body, the lower valve body is provided with four interfaces, the upper valve body and the lower valve body are in an axisymmetric structure, the rotating shaft penetrates through the center lines of the upper valve body and the lower valve body from top to bottom, the rotating shaft is provided with a shoulder part, the outer circumference of the shoulder part of the rotating shaft is connected with the inner wall of the upper valve body, the outer circumference of the shoulder part, the outer surface of the lower edge is connected with the inner wall surface of the upper valve body, a cavity is formed between the lower edge part of the upper valve body and the rotating shaft, a valve core is installed in the cavity, the opening of the upper valve body is connected with the valve core through threads, a passage is arranged on the valve core, the valve core is arranged between the lower edge part and the lower valve body, the valve core is connected with the lower valve body, a disc spring is sleeved on the rotating shaft, and the disc spring is extruded by the shoulder part of the rotating shaft and the inner top surface of the upper valve body.
2. The low temperature manual four-way valve according to claim 1, wherein: be equipped with the multilayer gasket between dish spring and the pivot shoulder, the multilayer gasket cup joints in the pivot, and the multilayer gasket includes gasket I and gasket II, and gasket I is the flat pad of stainless steel, and gasket II is the flat pad of polytetrafluoroethylene, and gasket I stacks up at gasket II's top.
3. The low temperature manual four-way valve according to claim 1, wherein: and the rotating shaft is connected with a nut, and the nut is positioned below the lower valve body.
4. The low temperature manual four-way valve according to claim 1, wherein: and a passage indicating line is arranged at the top of the rotating shaft.
5. The low temperature manual four-way valve according to claim 3, wherein: and a limiting plate is arranged between the nut and the lower valve body.
6. The low temperature manual four-way valve according to claim 1, wherein: the four-way valve comprises four passages, namely a passage I, a passage II, a passage III and a passage IV, when the rotating shaft rotates to the direction of the passage III, the passage I is communicated with the passage IV, the passage II is communicated with the passage III, and each passage is L-shaped.
7. The low temperature manual four-way valve according to claim 6, wherein: when the rotating shaft rotates to the direction of the passage IV, the passage I is communicated with the passage II, and the passage III is communicated with the passage IV.
8. The low temperature manual four-way valve according to claim 1, wherein: and an O-shaped sealing ring is arranged at the joint between the shoulder of the rotating shaft and the valve core.
9. The low temperature manual four-way valve according to claim 1, wherein: the handle is connected to the rotating shaft and is a cylindrical body, and the handle can drive the rotating shaft to rotate.
10. The low temperature manual four-way valve according to claim 1, wherein: the valve core is a polytetrafluoroethylene valve core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920528834.8U CN209839220U (en) | 2019-04-17 | 2019-04-17 | Manual cross valve of low temperature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920528834.8U CN209839220U (en) | 2019-04-17 | 2019-04-17 | Manual cross valve of low temperature |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209839220U true CN209839220U (en) | 2019-12-24 |
Family
ID=68912583
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920528834.8U Expired - Fee Related CN209839220U (en) | 2019-04-17 | 2019-04-17 | Manual cross valve of low temperature |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209839220U (en) |
-
2019
- 2019-04-17 CN CN201920528834.8U patent/CN209839220U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210727 Address after: Room 801, building 4, courtyard 16, Yingcai North Third Street, future science city, Changping District, Beijing Patentee after: Beijing huideyi Technology Co.,Ltd. Address before: No.02, room 907, 9 / F, No.2, yard 19, Huangping Road, Huilongguan town, Changping District, Beijing Patentee before: PURUI TECHNOLOGY (BEIJING) Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191224 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |