CN111779856A - Angle stroke small flow regulating valve - Google Patents
Angle stroke small flow regulating valve Download PDFInfo
- Publication number
- CN111779856A CN111779856A CN202010702747.7A CN202010702747A CN111779856A CN 111779856 A CN111779856 A CN 111779856A CN 202010702747 A CN202010702747 A CN 202010702747A CN 111779856 A CN111779856 A CN 111779856A
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- Prior art keywords
- valve
- angular travel
- flow
- hole
- valve body
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Links
- 230000001105 regulatory effect Effects 0.000 title claims abstract description 10
- 238000012856 packing Methods 0.000 claims description 11
- 210000004907 gland Anatomy 0.000 claims description 7
- 238000011144 upstream manufacturing Methods 0.000 claims description 4
- 238000005242 forging Methods 0.000 claims 1
- 239000002351 wastewater Substances 0.000 description 9
- 239000003546 flue gas Substances 0.000 description 7
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 6
- 239000007789 gas Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000006477 desulfuration reaction Methods 0.000 description 5
- 230000023556 desulfurization Effects 0.000 description 5
- 239000000779 smoke Substances 0.000 description 5
- 238000007789 sealing Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 208000028659 discharge Diseases 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000004065 wastewater treatment Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 235000019738 Limestone Nutrition 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000003009 desulfurizing effect Effects 0.000 description 1
- TXKMVPPZCYKFAC-UHFFFAOYSA-N disulfur monoxide Inorganic materials O=S=S TXKMVPPZCYKFAC-UHFFFAOYSA-N 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical compound S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Images
Classifications
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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
- F16K5/0407—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 with particular plug arrangements, e.g. particular shape or built-in 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
- 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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/08—Guiding yokes for spindles; Means for closing housings; Dust caps, e.g. for tyre valves
-
- 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
- F16K5/0457—Packings
- F16K5/0485—Spindle sealing
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
Abstract
The invention discloses an angular travel small-flow regulating valve, which consists of a valve body, a valve sleeve, a valve core, a valve rod and a valve cover, wherein the valve sleeve is arranged inside the valve body and is matched with an inner hole of the valve body to be tightly pressed and fixed by the valve cover; the invention can meet different flow characteristic requirements by adopting a way of replacing the valve sleeve without changing the overall structure of the valve, so that the standardization and the serialization of the valve are simple, convenient, feasible, economical and practical.
Description
Technical Field
The invention relates to the field of environment-friendly equipment, in particular to an angular travel small-flow regulating valve.
Background
The flue gas of large coal-fired power plant contains a large amount of sulfur oxide gas, most of the flue gas adopts limestone-gypsum wet desulphurization device process, and the principle is that lime water using limestone as raw material to make lime is sprayed into rising flue as process slurry, and reacts with flue gas flowing upwards to make SO in flue gas2、SO3Absorbing into the slurry to achieve the aim of desulfurization. The process water used in the process is the final outlet of the industrial wastewater of the whole plant, has high impurity content, and absorbs SO in the flue gas through a desulfurizing device2、SO3And other impurities, the content of harmful substances and suspended matters in the desulfurization wastewater is very high. The desulfurized wastewater is generally subjected to physical and chemical treatment, but Cl in the desulfurized wastewater-1Heavy metal ions cannot be removed, and serious environmental pollution is caused by external emission. Therefore, zero discharge of desulfurization waste water becomes a hard requirement in the power industry. During the operation of the coal-fired generating set, along with the change of the load of a power grid, the operation condition of a boiler also changes, parameters such as the smoke gas quantity, the smoke gas temperature and the like correspondingly change, and for a treatment device for evaporating and treating wastewater by using the smoke gas waste heat at the tail of a flue, the adjustment of the wastewater treatment quantity according to the change of the smoke gas parameters is very important, because if the smoke gas thermal mass can not completely evaporate the wastewater, the liquid water can cause serious corrosion damage to supports in the flue and the flue, a dust remover electrode at the rear section of the flue and the like, and further the safe, stable and stable operation of the generating set is seriously threatened.
The desulfurization wastewater zero-discharge treatment device based on flue gas evaporation needs to accurately control the wastewater treatment capacity according to flue gas parameters and the flow field distribution of a flue, generally requires that a plurality of small-flow atomizing nozzles are arranged on the flue, data are calculated corresponding to the heat value of the flow field position of each nozzle, the wastewater flow is regulated and controlled, and therefore a small-flow regulating valve needs to be configured for each atomizing nozzle. The desulfurization wastewater not only contains a large amount of chloride ions, but also contains various heavy metal ions and more suspended solids.
There is therefore a need for a valve which is not only corrosion resistant, but also has the problem of preventing suspended matter from blocking the valve and affecting the regulation performance.
Disclosure of Invention
The invention aims to provide an angular travel small flow regulating valve to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides a little flow control valve of angular travel, comprises valve body, valve barrel, case, valve rod and valve gap, the valve barrel is installed inside the valve body, with the cooperation of valve body hole to the valve gap compresses tightly fixedly, the valve barrel hole cooperates with the case, communicate with valve body through-flow hole, the case is installed in the valve barrel, the waist of case is equipped with the radial through-flow hole that equals with the nominal diameter of valve, the upper end is equipped with radial recess, the flat square head of valve rod lower extreme inserts in the groove of case upper end, the upper end couples with actuating mechanism, the valve barrel upper reaches side is opened there is the bar orifice, the downstream side is opened there is the through-flow hole that equals with the nominal diameter of valve, this through.
As a further technical scheme of the invention: the valve cover is arranged at the upper end of the valve body and is sealed with the valve body by adopting a valve cover seal.
As a further technical scheme of the invention: and the valve rod and the valve cover are sealed by adopting packing, and the packing is fixed on the valve cover through a packing gland and a gland bolt.
As a further technical scheme of the invention: the valve core is driven to rotate by the valve rod.
As a further technical scheme of the invention: the waist of the valve sleeve is provided with a radial through-flow hole, and the diameter of the radial through-flow hole is equal to the nominal diameter of the valve.
As a further technical scheme of the invention: the valve body is manufactured by adopting a forged piece.
As a further technical scheme of the invention: the valve is operated and controlled in a pneumatic, electric, hydraulic or manual manner.
Compared with the prior art, the invention has the beneficial effects that:
1. the valve sleeve is adopted to open the strip-shaped throttling hole, the throttling hole can be accurately processed in a numerical control linear cutting mode, and the requirements of various flow characteristics on the shape of the throttling hole can be met.
2. The valve sleeve and the valve body, and the valve core and the valve sleeve are matched by adopting cylindrical surfaces for interception, so that the machining precision of matching surfaces with higher requirements is easy to ensure, the internal leakage of the valve is prevented, and the adjusting performance of the adjusting valve is ensured.
3. Because the upstream side of the valve sleeve is provided with the strip-shaped throttling hole, solid suspended matters in the medium enter the valve core overflowing hole with the suddenly increased area after passing through the throttling hole in the opening state of the valve, and are easy to flush away from the valve along with the medium; in the closed state of the valve, the medium is in a static state, and suspended matters in the medium cannot enter the strip-shaped throttling hole. The structure can effectively avoid the blockage of the strip-shaped throttling hole, ensure the adjusting performance of the valve and greatly improve the reliability and the service life of the valve.
4. Because the valve adopts the rotation regulation, not only can greatly shorten the valve rod length, reduce the overall dimension of the valve, but also can reduce the price of a matched actuating mechanism and save the overall cost of the valve.
5. The design can meet different flow characteristic requirements by adopting a way of replacing the valve sleeve under the condition of not changing the overall structure of the valve, so that the standardization and serialization of the valve are simple, convenient, feasible, economical and practical.
Drawings
Fig. 1 is a general assembly drawing of the present invention.
Fig. 2 is a sectional view of the valve cartridge structure.
Fig. 3 is a plan view of the valve core structure.
Fig. 4 is a cross-sectional view of the valve sleeve construction.
In fig. 1: 1-valve body, 2-valve sleeve, 3-valve core, 4-valve cover seal, 5-packing gland, 6-gland bolt, 7-valve rod, 8-packing, 9-valve cover bolt and 10-valve cover.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-4, example 1: the utility model provides a little flow control valve of angular travel, comprises valve body 1, valve barrel 2, case 3, valve rod 7 and valve gap 10, and wherein, valve barrel 2 installs in valve body 1 inside, with the cooperation of valve body hole to valve gap 10 compresses tightly fixedly, and the cooperation of valve barrel 2 hole and case. The upstream side of the valve sleeve 2 is provided with a strip-shaped orifice according to the requirement of valve regulation performance, the downstream side is provided with a through-flow hole equal to the nominal diameter of the valve, the through-flow hole is widened by about 5 degrees along the circumferential direction, the strip-shaped orifice is convenient to process, the valve core 3 is arranged in the valve sleeve, the waist part is provided with a radial through-flow hole equal to the nominal diameter of the valve, the upper end of the valve core is provided with a radial groove, the flat square head of the lower section of the valve rod 7 is inserted into the groove at the upper end of the valve core, the upper end of the valve rod is connected with an execution mechanism to realize angular regulation, the valve rod and. The valve rod 7 and the valve cover 10 are sealed by packing 8, the packing 8 is fixed on the valve cover 10 through a packing gland 5 and a gland bolt 6,
when the valve rod rotates, the valve core is driven to rotate, the valve core through-flow hole is communicated with the valve sleeve throttling hole, the valve is opened, along with the increase of the rotation angle, the through-flow area of the throttling hole is increased, the flow of the valve is gradually increased, and the flow regulation and control can be realized. The opening of the valve is 0-100%, and the rotating angle of the valve rod is 90 degrees, so that the actuating mechanism can easily meet the requirements.
The design has the core that the main sealing surface of the valve is a cylindrical surface, so that the valve is easy to accurately process, the matching precision can be conveniently improved, the main sealing surface can be prevented from being eroded and damaged by a medium, the service life of the valve core is greatly prolonged, and the problem that the main sealing surface of the waste water regulating valve is easy to lose efficacy is solved; the valve sleeve is in a stationary state in work, the upstream side of the outer cylindrical surface is provided with the strip-shaped throttling hole, the hole width can be accurately calculated according to a flow characteristic curve, the machining precision is ensured in a numerical control linear cutting mode, the cross-sectional area of the valve flow passage meets the requirement of accurate flow regulation, and the service life of the valve can be prolonged.
The design can meet different flow characteristic requirements by adopting a way of replacing the valve sleeve under the condition of not changing the overall structure of the valve, so that the standardization and serialization of the valve are simple, convenient, feasible, economical and practical.
Example 2 on the basis of example 1, the valve is operated and controlled in a pneumatic, electric, hydraulic or manual mode.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
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 (7)
1. The utility model provides a little flow control valve of angular travel, comprises valve body (1), valve barrel (2), case (3), valve rod (7) and valve gap (10), a serial communication port, valve barrel (2) are installed inside valve body (1), with valve body (1) hole cooperation, compress tightly fixedly with valve gap (10), valve barrel (2) hole and case (3) cooperation, communicate with valve body (1) through-flow hole, case (3) are installed in valve barrel (2), the waist of case (3) is equipped with the radial through-flow hole that equals with the nominal diameter of valve, the upper end is equipped with radial groove, the flat square head of valve rod (7) lower extreme inserts in the groove of case (3) upper end, the upper end couples with actuating mechanism, valve barrel (2) upstream side is opened there is the bar orifice, the downstream side is opened has the through-flow hole that equals with the nominal diameter of valve, this through-flow hole expands 5 along the circumferencial direction.
2. An angular travel low flow regulating valve according to claim 1, characterized in that the valve cover (10) is mounted on the upper end of the valve body (1) and sealed with the valve cover seal (4) between the valve cover and the valve body (1).
3. The angular travel small-flow regulating valve according to claim 1, characterized in that the valve rod (7) and the valve cover (10) are sealed by packing (8), and the packing (8) is fixed on the valve cover (10) through a packing gland (5) and a gland bolt (6).
4. An angular travel low flow regulator valve according to claim 1, characterized in that said spool (3) is rotated by a stem (7).
5. An angular travel low flow regulator valve according to claim 1, characterised in that the valve housing (2) is provided with radial through-flow holes in the waist, the diameter of which is equal to the nominal valve diameter.
6. An angular travel low flow regulator valve according to claim 1, characterized in that said valve body (1) is manufactured by forging.
7. An angular travel low flow regulator valve according to any of claims 1 to 6 wherein the valve is operated and controlled pneumatically, electrically, hydraulically or manually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010702747.7A CN111779856A (en) | 2020-07-21 | 2020-07-21 | Angle stroke small flow regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010702747.7A CN111779856A (en) | 2020-07-21 | 2020-07-21 | Angle stroke small flow regulating valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111779856A true CN111779856A (en) | 2020-10-16 |
Family
ID=72763592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010702747.7A Pending CN111779856A (en) | 2020-07-21 | 2020-07-21 | Angle stroke small flow regulating valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111779856A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113153957A (en) * | 2021-04-26 | 2021-07-23 | 国家康复辅具研究中心 | Hand regulating flow valve device for small hydraulic damping cylinder |
| CN113323980A (en) * | 2021-04-26 | 2021-08-31 | 国家康复辅具研究中心 | Electric regulating flow valve device for small hydraulic damping cylinder |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1249484A (en) * | 1967-11-07 | 1971-10-13 | Per Otto Andersson | A valve arrangement comprising a valve body and a throttle member |
| EP0016304A1 (en) * | 1979-03-08 | 1980-10-01 | Jack R. Claycomb | Choke for controlling the flow of drilling mud |
| CN201496608U (en) * | 2009-09-10 | 2010-06-02 | 江南阀门有限公司 | Depressurization type metallic seal ball valve |
| CN201787115U (en) * | 2010-08-27 | 2011-04-06 | 李卫军 | Column valve |
| CN208252883U (en) * | 2018-05-24 | 2018-12-18 | 中国船舶重工集团公司第七一九研究所 | A kind of novel low noise exhaust valve |
| CN209229124U (en) * | 2018-12-25 | 2019-08-09 | 浙江奥新仪表有限公司 | A corrosion-resistant high-performance flow controller |
| CN210218749U (en) * | 2019-04-24 | 2020-03-31 | 哈电集团哈尔滨电站阀门有限公司 | Spring compensation type plug valve with movable valve seat |
| CN211039749U (en) * | 2019-07-26 | 2020-07-17 | 无锡市奇胜自控设备有限公司 | Novel multi-channel valve |
-
2020
- 2020-07-21 CN CN202010702747.7A patent/CN111779856A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1249484A (en) * | 1967-11-07 | 1971-10-13 | Per Otto Andersson | A valve arrangement comprising a valve body and a throttle member |
| EP0016304A1 (en) * | 1979-03-08 | 1980-10-01 | Jack R. Claycomb | Choke for controlling the flow of drilling mud |
| CN201496608U (en) * | 2009-09-10 | 2010-06-02 | 江南阀门有限公司 | Depressurization type metallic seal ball valve |
| CN201787115U (en) * | 2010-08-27 | 2011-04-06 | 李卫军 | Column valve |
| CN208252883U (en) * | 2018-05-24 | 2018-12-18 | 中国船舶重工集团公司第七一九研究所 | A kind of novel low noise exhaust valve |
| CN209229124U (en) * | 2018-12-25 | 2019-08-09 | 浙江奥新仪表有限公司 | A corrosion-resistant high-performance flow controller |
| CN210218749U (en) * | 2019-04-24 | 2020-03-31 | 哈电集团哈尔滨电站阀门有限公司 | Spring compensation type plug valve with movable valve seat |
| CN211039749U (en) * | 2019-07-26 | 2020-07-17 | 无锡市奇胜自控设备有限公司 | Novel multi-channel valve |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113153957A (en) * | 2021-04-26 | 2021-07-23 | 国家康复辅具研究中心 | Hand regulating flow valve device for small hydraulic damping cylinder |
| CN113323980A (en) * | 2021-04-26 | 2021-08-31 | 国家康复辅具研究中心 | Electric regulating flow valve device for small hydraulic damping cylinder |
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| PB01 | Publication | ||
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Application publication date: 20201016 |