CN113357393B - Three-gear four-waveform easy-to-dismount valve - Google Patents

Three-gear four-waveform easy-to-dismount valve Download PDF

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Publication number
CN113357393B
CN113357393B CN202110621277.6A CN202110621277A CN113357393B CN 113357393 B CN113357393 B CN 113357393B CN 202110621277 A CN202110621277 A CN 202110621277A CN 113357393 B CN113357393 B CN 113357393B
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valve body
hole
elliptical hole
channel
elliptical
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CN202110621277.6A
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CN113357393A (en
Inventor
沈炼
杨瑛
王培杰
韩艳
熊鹰
许赤士
周旭辉
孙昱
米立华
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Changsha University of Science and Technology
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Changsha University of Science and Technology
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/04—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having cylindrical surfaces; Packings therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/06—Construction of housing; Use of materials therefor of taps or cocks
    • F16K27/065—Construction of housing; Use of materials therefor of taps or cocks with cylindrical plugs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/04—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having cylindrical surfaces; Packings therefor
    • F16K5/0492—Easy mounting or dismounting means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/08—Details
    • F16K5/10—Means for additional adjustment of the rate of flow

Abstract

A three-gear four-waveform easy-to-disassemble and assemble valve comprises a left valve body, a right valve body, a servo motor, a lifting cover plate, a left pull ring, a motor shaft, a right pull ring, a sensing module, a sealing piece, a waveform control sleeve, a main valve core, a threaded cover, a lower driving piece, a shock pad, a threaded pipe and a lower output shaft; the waveform control sleeve comprises an outer square hole I, an outer square hole II, an outer elliptical hole I and an outer elliptical hole II; the main valve core comprises an inner square passage and an inner oval passage; the lifting cover plate is detachably connected with the left valve body and the right valve body, the servo motor outputs power to the motor shaft, the motor shaft is connected with the waveform control sleeve, and the waveform control sleeve comprises an upper plate and a sleeve portion.

Description

Three-gear four-waveform easy-to-dismount valve
Technical Field
The invention relates to the field of bridge vortex vibration experiments, in particular to a three-gear four-waveform easy-to-disassemble and assemble valve.
Background
With the continuous increase of bridge span, wind-induced vibration gradually becomes a main factor restricting the further development of the large-span bridge. Vortex vibration is a self-limiting wind-induced vibration phenomenon with both forced and self-excited characteristics, caused by regular vortex shedding that occurs when an air stream flows over a structure surface. The phenomenon of vortex vibration of the main girder of the Bridge is very rare in practical engineering, and for example, the nitrey cross-sea Bridge (Rio-nitroi Bridge) in brazil, the Tokyo Bay Bridge (Trans-Tokyo Bay Bridge) in japan, the big berel Bridge (Great East Belt Bridge) in denmark, the Volga Bridge (Volga Bridge) in russia, the virazano-Narrows Bridge in the united states, the west and siemens bridges in china, the tiger and psittaci bridges in brazilian and the like all have the phenomenon of vortex-induced vibration to different degrees in the operation process. Although the vortex vibration can not directly cause the dynamic instability damage of the bridge, the vortex vibration with larger amplitude can cause larger harm to the safety and the driving comfort of the bridge structure. The steel box girder has great superiority in wind resistance and crossing capacity compared with other section forms, and is becoming the main structural form of a large-span bridge stiffening girder crossing Yangtze river and sea. Due to the influence of high humidity and high temperature difference on the sea, the corrosion problem of the steel box girder is serious, and a good dehumidification system is usually required to be configured inside the steel box girder. The regeneration air of the common dehumidifier is taken from the outside of the box and then discharged to the outside of the box, and the air is continuously dehumidified and regenerated by using the drying rotating wheel, thereby achieving the dehumidification effect. As known from the working principle of the dehumidification system, the dehumidification system has the similar characteristics with an active flow control system, and air suction and air blowing are required. Due to the complexity of the cross section flow winding of the bridge, various pneumatic shape optimization measures do not have universality of vortex vibration control and are mainly determined through wind tunnel tests and experiences.
However, in practical use, the following problems exist:
1. the experimental system in the prior art controls the wind power through a valve, however, the wind power in the actual situation is always changeable instantly, and the wind power change situation is too much to simulate one by one.
2. In the valve in the prior art, a composite valve core exists, but the composite valve core is usually an inner valve core which is an auxiliary valve, an outer valve core which is a main valve, and the inner valve core is usually difficult to machine due to the smaller volume of the inner valve core, and the function and the execution area which can be executed by the valve core with small volume are small, so that the effect is influenced.
3. The valve in the prior art can adjust the flow rate through the opening and closing degree, but the opening and closing degree control needs manual or machine control, so that the cost is greatly increased.
4. After the valve core in the prior art is used for a long time, the condition of scaling or maintenance is needed, the valve core needs to be disassembled at the moment, and the procedure is complicated.
5. The valve core through holes in the prior art are often square or round, and the advantages brought by the characteristics of the oval through holes and the matching of the through holes in different shapes are ignored.
6. In the multi-way rotary valve in the prior art, because the number of the passages is too large, one passage is added, the gaps among the passages are greatly reduced, the positions reserved for sealing are less, and the difficulty is brought to the processing and the installation of a sealing structure.
7. The prior art valves work with a single drive and there is little dual drive because the support and vibration of the lower drive member is a significant problem with dual drive.
8. The valve for life and industry in the prior art is usually arranged independently, but the valve for experiments is just the opposite, and because the valve for experiments simulates the reality but the proportion is greatly reduced, the valve for experiments has the integration requirement, and the common valve obviously cannot adapt to the integration requirement.
Disclosure of Invention
In order to overcome the above problems, the present invention proposes a solution to solve the above problems simultaneously.
The technical scheme adopted by the invention for solving the technical problems is as follows: a three-gear four-waveform easy-to-disassemble and assemble valve comprises a left valve body, a right valve body, a servo motor, a lifting cover plate, a left pull ring, a motor shaft, a right pull ring, a sensing module, a sealing piece, a waveform control sleeve, a main valve core, a threaded cover, a lower driving piece, a shock pad, a threaded pipe and a lower output shaft; the waveform control sleeve comprises an outer square hole I, an outer square hole II, an outer elliptical hole I and an outer elliptical hole II; the main valve core comprises an inner square passage and an inner oval passage;
the lifting cover plate is detachably connected with the left valve body and the right valve body, the servo motor outputs power to the motor shaft, the motor shaft is connected with the waveform control sleeve, the waveform control sleeve comprises an upper plate and a sleeve part, the motor shaft is connected with the upper plate, the upper plate is positioned below the lifting cover plate, the main valve core is positioned in the waveform control sleeve, and the lower surface of the main valve core is flush with the lower surface of the sleeve part; the lifting cover plate is provided with a left pull ring and a right pull ring, the sensing module is arranged above the right valve body and comprises a flowmeter and a humidity sensor;
The lower output shaft is connected below the main valve core and driven by the lower driving part, the threaded pipe is connected below the left valve body and the right valve body and surrounds the lower driving part, the lower surface of the lower driving part is flush with the lower surface of the threaded pipe, external threads are arranged on the outer wall of the threaded pipe, the threaded cover comprises internal threads, the external threads are connected with the internal threads in a matched manner, the shock absorption pad is arranged on the threaded cover, and the shock absorption pad is positioned on the lower surface of the lower driving part;
the outer square hole I, the outer elliptical hole I, the outer square hole II and the outer elliptical hole II are sequentially arranged at equal intervals along the peripheral surface of the waveform control sleeve, the heights of the four holes are equal, the widths of the outer square hole I and the outer square hole II are equal to the maximum widths of the outer elliptical hole I and the outer elliptical hole II, the cross-sectional area of the inner square channel is equal to the areas of the outer square hole I and the outer square hole II, the cross-sectional area of the inner square channel is larger than the areas of the outer elliptical hole I and the outer elliptical hole II, the cross-sectional area of the inner elliptical channel is smaller than the areas of the outer elliptical hole I and the outer elliptical hole II, and the axis of the inner square channel and the axis of the inner elliptical channel form an included angle of 30 degrees;
When the outer square hole I and the outer square hole II are communicated with the inner square channel, the flow blocking state is realized, the output wind power waveform of the valve is a fixed-quantity waveform at the moment, and when the flow blocking state is realized, the outer square hole I circumferentially swings back and forth to form a periodic sudden change waveform; when the first outer elliptical hole and the second outer elliptical hole are communicated with the inner square channel, the two-stage flow state is realized, and when the two-stage flow state is realized, the outer elliptical hole swings back and forth in a circumferential direction to form a periodic slow change waveform; the first outer square hole and the second outer square hole are in a three-gear flow state when communicated with the inner elliptical channel, the first outer elliptical hole and the second outer elliptical hole are in a three-gear flow state when communicated with the inner elliptical channel, and in the three-gear flow state, the waveform control sleeve rotates at a constant speed so that the valve outputs intermittent wind waveforms.
Further, the lifting cover plate is connected to the left valve body and the right valve body through bolts.
Furthermore, the sealing pieces are arranged on the left valve body and the right valve body.
Further, the lower driving part is a driving motor.
Further, the height of the inner elliptical channel is smaller than that of the first outer elliptical hole.
Further, the maximum width of the inner elliptical channel is smaller than the maximum width of the first outer elliptical hole.
Further, the left valve body and the right valve body are integrally formed.
Further, the threaded pipe is welded below the left valve body and the right valve body.
Further, the main valve element is cylindrical.
Further, the diameter of the main spool is larger than three-quarters of the outer diameter of the wave control sleeve.
The invention has the beneficial effects that:
1. according to the 1 st point provided by the background technology, the matching of the waveform control sleeve and the main valve core is adopted, and the wind power effects of intermittent waves, periodic rapid change waveforms, periodic slow change waveforms and linear waveforms are simulated through the structural design and the matching effect of the waveform control sleeve and the main valve core, so that the types of experimental wind power waveforms are enriched to a greater extent.
2. In the point 2 proposed by the background technology, the inner valve core is used as a main valve core, the outer valve core is used as an auxiliary control valve core, the volume of the inner valve core is larger than that of the outer valve core so as to form main on-off, and the outer valve core is sleeve-shaped and is more flexible.
3. In the 3 rd point proposed for the background art, different through holes are arranged on the inner valve core and the outer valve core, when the two large through holes are communicated, the first flow rate is set, when the outer small through hole is communicated with the inner large through hole, the flow rate is set to be the second flow rate because the flow rate is determined by the smallest through hole, and when the inner small through hole is communicated with any hole, the flow rate is determined by the inner small through hole, and therefore the flow rate is set to be the third flow rate.
4. To the 4 th point that the background art provided, because outer case does not have the bottom plate for the sleeve form, can open the apron and directly take out, take out the back, have great clearance between inner case and the valve body, can not take out and clean through the instrument, do not have before inner case and valve body press close to the problem that can't directly clean still need to take out.
5. In the 5 th point proposed by the background art, in the rotation process of the rectangular through hole, the change of the flow rate is relatively large, and a periodic rapid change waveform is simulated. In the rotation process of the oval through hole, due to the action of the curved surface, the change of the flow rate is relatively slow, the periodical slow change waveform is simulated, the oval height is higher than that of the circle, the coverage range of the through hole is better expanded, and the flow area is increased.
6. Aiming at the 6 th point proposed by the background technology, the rectangular through hole on the main valve core is close to the oval through hole instead of being spaced by 90 degrees, so that a larger sealing surface is reserved for arranging a sealing structure.
7. To the 7 th point that the background art provided, all set up drive structure from top to bottom at the valve body, and to drive structure's support problem down, set up the connection solenoid with the parcel, set up the screw lid with the support, set up the blotter with the shock attenuation.
8. To the 8 th point that the background art provided, set up the solenoid in the valve body below, the solenoid can be dismantled with the screw lid and be connected, can directly place on the plane when the two is connected, and the valve can be connected to integrated platform through the solenoid when unloading the screw lid on, realizes that the experiment integrates.
Note: the foregoing designs are not sequential, each of which provides a distinct and significant advance in the present invention over the prior art.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a partial cross-sectional view of the main poppet of the valve of the present invention
FIG. 2 is a partial cross-sectional view of a valve waveform control sleeve of the present invention
FIG. 3 is a schematic top view of the valve cartridge of the present invention with a flow-blocking passage
FIG. 4 is a schematic top plan view of the valve cartridge of the present invention
In the figures, the reference numerals are as follows:
1. the valve comprises a left valve body 2, a right valve body 3, a servo motor 4, a lifting cover plate 5, a left pull ring 6, a motor shaft 7, a right pull ring 8, a sensing module 9, a sealing piece 10, a waveform control sleeve 11, a main valve core 12, a threaded cover 13, a lower driving piece 14, a shock absorption pad 15, a threaded pipe 16, an inner square channel 17, an outer square hole I18, an outer square hole II 19, an outer elliptical hole I20, an inner elliptical channel 21, an outer elliptical hole II 22 and a lower output shaft
Detailed Description
As shown in the figure: a three-gear four-waveform easy-to-disassemble and assemble valve comprises a left valve body, a right valve body, a servo motor, a lifting cover plate, a left pull ring, a motor shaft, a right pull ring, a sensing module, a sealing piece, a waveform control sleeve, a main valve core, a threaded cover, a lower driving piece, a shock pad, a threaded pipe and a lower output shaft; the waveform control sleeve comprises an outer square hole I, an outer square hole II, an outer elliptical hole I and an outer elliptical hole II; the main valve core comprises an inner square passage and an inner oval passage;
the lifting cover plate is detachably connected with the left valve body and the right valve body, the servo motor outputs power to the motor shaft, the motor shaft is connected with the waveform control sleeve, the waveform control sleeve comprises an upper plate and a sleeve part, the motor shaft is connected with the upper plate, the upper plate is positioned below the lifting cover plate, the main valve core is positioned in the waveform control sleeve, and the lower surface of the main valve core is flush with the lower surface of the sleeve part; the lifting cover plate is provided with a left pull ring and a right pull ring, the sensing module is arranged above the right valve body and comprises a flowmeter and a humidity sensor;
As shown in the figure: the lower output shaft is connected below the main valve core and driven by the lower driving part, the threaded pipe is connected below the left valve body and the right valve body and surrounds the lower driving part, the lower surface of the lower driving part is flush with the lower surface of the threaded pipe, external threads are arranged on the outer wall of the threaded pipe, the threaded cover comprises internal threads, the external threads are connected with the internal threads in a matched manner, the shock absorption pad is arranged on the threaded cover, and the shock absorption pad is positioned on the lower surface of the lower driving part;
the outer square hole I, the outer elliptical hole I, the outer square hole II and the outer elliptical hole II are sequentially arranged at equal intervals along the peripheral surface of the waveform control sleeve, the heights of the four holes are equal, the widths of the outer square hole I and the outer square hole II are equal to the maximum widths of the outer elliptical hole I and the outer elliptical hole II, the cross-sectional area of the inner square channel is equal to the areas of the outer square hole I and the outer square hole II, the cross-sectional area of the inner square channel is larger than the areas of the outer elliptical hole I and the outer elliptical hole II, the cross-sectional area of the inner elliptical channel is smaller than the areas of the outer elliptical hole I and the outer elliptical hole II, and the axis of the inner square channel and the axis of the inner elliptical channel form an included angle of 30 degrees;
When the first outer square hole and the second outer square hole are communicated with the inner square channel, the flow blocking state is realized, the output wind waveform of the valve is a fixed-quantity waveform at the moment, and when the flow blocking state is realized, the first outer square hole swings back and forth in the circumferential direction to form a periodic rapid change waveform; when the first outer elliptical hole and the second outer elliptical hole are communicated with the inner square channel, the flow is in a second flow state, and when the flow is in the second flow state, the outer elliptical hole swings back and forth in a circumferential direction to form a periodic slow-changing waveform; the first outer square hole and the second outer square hole are in a three-gear flow state when communicated with the inner elliptical channel, the first outer elliptical hole and the second outer elliptical hole are in a three-gear flow state when communicated with the inner elliptical channel, and in the three-gear flow state, the waveform control sleeve rotates at a constant speed so that the valve outputs intermittent wind waveforms.
As shown in the figure: the lifting cover plate is connected to the left valve body and the right valve body through bolts. And the sealing pieces are arranged on the left valve body and the right valve body. The lower driving piece is a driving motor. The height of the inner elliptical channel is smaller than that of the first outer elliptical hole. The maximum width of the inner elliptical channel is smaller than the maximum width of the first outer elliptical hole. The left valve body and the right valve body are integrally formed. The threaded pipe is welded below the left valve body and the right valve body. The main valve core is cylindrical. The diameter of the main valve core is larger than three-quarters of the outer diameter of the waveform control sleeve.
The above detailed description is specific to possible embodiments of the present invention, and the embodiments are not intended to limit the scope of the present invention, and all equivalent implementations or modifications that do not depart from the scope of the present invention are intended to be included within the scope of the present invention.

Claims (5)

1. The utility model provides a three keep off four wave forms easy dismouting valve which characterized in that: the valve comprises a left valve body, a right valve body, a servo motor, a lifting cover plate, a left pull ring, a motor shaft, a right pull ring, a sensing module, a sealing piece, a waveform control sleeve, a main valve core, a threaded cover, a lower driving piece, a shock pad, a threaded pipe and a lower output shaft; the waveform control sleeve comprises an outer square hole I, an outer square hole II, an outer elliptical hole I and an outer elliptical hole II; the main valve core comprises an inner square passage and an inner oval passage;
the lifting cover plate is detachably connected with the left valve body and the right valve body, the servo motor outputs power to the motor shaft, the motor shaft is connected with the waveform control sleeve, the waveform control sleeve comprises an upper plate and a sleeve part, the motor shaft is connected with the upper plate, the upper plate is positioned below the lifting cover plate, the main valve core is positioned in the waveform control sleeve, and the lower surface of the main valve core is flush with the lower surface of the sleeve part; the lifting cover plate is provided with a left pull ring and a right pull ring, the sensing module is arranged above the right valve body and comprises a flowmeter and a humidity sensor;
The lower output shaft is connected below the main valve core and driven by the lower driving part, the threaded pipe is connected below the left valve body and the right valve body and surrounds the lower driving part, the lower surface of the lower driving part is flush with the lower surface of the threaded pipe, external threads are arranged on the outer wall of the threaded pipe, the threaded cover comprises internal threads, the external threads are connected with the internal threads in a matched manner, the shock absorption pad is arranged on the threaded cover, and the shock absorption pad is positioned on the lower surface of the lower driving part;
the outer square hole I, the outer elliptical hole I, the outer square hole II and the outer elliptical hole II are sequentially arranged at equal intervals along the peripheral surface of the waveform control sleeve, the heights of the four holes are equal, the widths of the outer square hole I and the outer square hole II are equal to the maximum widths of the outer elliptical hole I and the outer elliptical hole II, the cross-sectional area of the inner square channel is equal to the areas of the outer square hole I and the outer square hole II, the cross-sectional area of the inner square channel is larger than the areas of the outer elliptical hole I and the outer elliptical hole II, the cross-sectional area of the inner elliptical channel is smaller than the areas of the outer elliptical hole I and the outer elliptical hole II, and the axis of the inner square channel and the axis of the inner elliptical channel form an included angle of 30 degrees;
When the first outer square hole and the second outer square hole are communicated with the inner square channel, the flow blocking state is realized, the output wind waveform of the valve is a fixed-quantity waveform at the moment, and when the flow blocking state is realized, the first outer square hole swings back and forth in the circumferential direction to form a periodic rapid change waveform; when the first outer elliptical hole and the second outer elliptical hole are communicated with the inner square channel, the flow is in a second flow state, and when the flow is in the second flow state, the outer elliptical hole swings back and forth in a circumferential direction to form a periodic slow-changing waveform; when the outer square hole I and the outer square hole II are communicated with the inner elliptical channel, the flow state is in a three-gear flow state, when the outer elliptical hole I and the outer elliptical hole II are communicated with the inner elliptical channel, the flow state is in a three-gear flow state, and in the three-gear flow state, the waveform control sleeve rotates at a constant speed so that the valve outputs intermittent wind waveforms; the maximum width of the inner elliptical channel is smaller than that of the first outer elliptical hole; the left valve body and the right valve body are integrally formed; the threaded pipe is welded below the left valve body and the right valve body; the main valve core is cylindrical; the diameter of the main valve core is larger than three-quarters of the outer diameter of the waveform control sleeve.
2. The three-stop four-wave easy-to-disassemble and assemble valve according to claim 1, characterized in that: the lifting cover plate is connected to the left valve body and the right valve body through bolts.
3. The three-stop four-wave easy-to-disassemble and assemble valve according to claim 1, characterized in that: and the sealing pieces are arranged on the left valve body and the right valve body.
4. The three-stop four-wave easy-to-disassemble and assemble valve according to claim 1, characterized in that: the lower driving piece is a driving motor.
5. The three-stop four-wave easy-to-disassemble and assemble valve according to claim 1, characterized in that: the height of the inner elliptical channel is smaller than that of the first outer elliptical hole.
CN202110621277.6A 2021-06-03 2021-06-03 Three-gear four-waveform easy-to-dismount valve Active CN113357393B (en)

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CN202110621277.6A CN113357393B (en) 2021-06-03 2021-06-03 Three-gear four-waveform easy-to-dismount valve

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Application Number Priority Date Filing Date Title
CN202110621277.6A CN113357393B (en) 2021-06-03 2021-06-03 Three-gear four-waveform easy-to-dismount valve

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CN113357393B true CN113357393B (en) 2022-07-29

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CN114013850B (en) * 2021-10-25 2022-12-16 呼伦贝尔安泰热电有限责任公司汇流河发电厂 Boiler desulfurization lime bin discharging system

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CN2739436Y (en) * 2004-11-19 2005-11-09 周卫东 Multifunctional liquid-controlled water valve
JP5740558B2 (en) * 2012-01-12 2015-06-24 パナソニックＩｐマネジメント株式会社 Valve device
CN207213235U (en) * 2017-09-15 2018-04-10 广东宗兴合泰能源环保股份有限公司 A kind of intelligent flow switch
CN210318610U (en) * 2019-07-26 2020-04-14 浙江京城流体科技有限公司 Ultrahigh pressure jacket heat-insulation ball valve for heat-insulation pipeline
CN210344375U (en) * 2019-07-29 2020-04-17 霸州市航江龙谱机械制造有限公司 Pump valve convenient to adjust flow
CN212004343U (en) * 2020-04-20 2020-11-24 内黄县石油机械有限责任公司 Novel oil seal type plug valve
CN111706691A (en) * 2020-07-07 2020-09-25 合肥学院 Governing valve with multiple flow characteristic

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