CN111779844A - Small flow regulating valve - Google Patents
Small flow regulating valve Download PDFInfo
- Publication number
- CN111779844A CN111779844A CN202010702753.2A CN202010702753A CN111779844A CN 111779844 A CN111779844 A CN 111779844A CN 202010702753 A CN202010702753 A CN 202010702753A CN 111779844 A CN111779844 A CN 111779844A
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- CN
- China
- Prior art keywords
- valve
- cover
- small flow
- rod
- seat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000001105 regulatory effect Effects 0.000 title claims abstract description 15
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910052802 copper Inorganic materials 0.000 claims abstract description 5
- 239000010949 copper Substances 0.000 claims abstract description 5
- 238000012856 packing Methods 0.000 claims description 11
- 210000004907 gland Anatomy 0.000 claims description 7
- 230000003628 erosive effect Effects 0.000 claims description 5
- 230000002787 reinforcement Effects 0.000 claims 1
- 239000002351 wastewater Substances 0.000 abstract description 10
- 238000006477 desulfuration reaction Methods 0.000 abstract description 7
- 230000023556 desulfurization Effects 0.000 abstract description 7
- 208000028659 discharge Diseases 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 7
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 6
- 239000003546 flue gas Substances 0.000 description 6
- 239000012535 impurity Substances 0.000 description 5
- 230000002035 prolonged effect Effects 0.000 description 4
- 238000004065 wastewater treatment Methods 0.000 description 4
- 230000008020 evaporation Effects 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000005728 strengthening Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 241000238631 Hexapoda Species 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000010808 liquid waste Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000000126 substance Substances 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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
-
- 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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
-
- 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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/48—Attaching valve members to screw-spindles
- F16K1/487—Attaching valve members to screw-spindles by a fixing element extending in the axial direction of the spindle, e.g. a screw
-
- 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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/52—Means for additional adjustment of the rate of flow
-
- 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
- F16K25/00—Details relating to contact between valve members and seats
- F16K25/04—Arrangements for preventing erosion, not otherwise provided for
-
- 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
- F16K41/00—Spindle sealings
- F16K41/02—Spindle sealings with stuffing-box ; Sealing rings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
- Details Of Valves (AREA)
Abstract
The invention discloses a small-flow regulating valve which comprises a valve seat, a valve core and a valve body, wherein the valve seat is arranged inside the valve body, the valve core is connected with a valve rod through threads, the outer cylindrical surface of the valve core is provided with a plurality of V-shaped grooves according to the requirement of the flow, a support for installing the valve rod is arranged on a valve cover, a guide copper sleeve of the valve rod is arranged at the upper part of the valve cover, and a limiting block is arranged on the valve rod; the sizes of all parts of the device can be adjusted, and the device is suitable for the requirement of wastewater flow adjustment of most desulfurization wastewater zero-discharge treatment devices under different working conditions by adjusting the sizes of the internal structures of the devices.
Description
Technical Field
The invention relates to the field of environment-friendly equipment, in particular to a small-flow regulating valve.
Background
The process water used for preparing lime slurry by the wet flue gas desulfurization device of the large coal-fired power plant is the final outlet of industrial wastewater of the whole plant, has high impurity content, and absorbs SO of flue gas through the desulfurization device2、SO3And after other impurities, the content of harmful substances and suspended matters in the desulfurization wastewater is very high, and the environment is seriously polluted by external discharge, so that the desulfurization wastewater of the coal-fired power plant is treated by zero discharge at present. In the desulfurization wastewater and flue gas evaporation process flow, along with the change of the operating condition of a unit, the heat value of fuel gas can change, and the wastewater zero-discharge treatment device can timely and accurately adjust the wastewater treatment amount according to the change of the operating condition of the unit, so that the key link influencing the success or failure of the flue evaporation wastewater treatment process is formed. Only when the waste water treatment capacity is accurately adjusted by coupling flue gas parameters, the waste heat of the flue gas can be utilized to the maximum extent, the corrosion damage of the incompletely evaporated liquid waste water to the subsequent equipment of the flue can be avoided, and the long-period safe and stable operation of the unit is ensured.
The desulfurization wastewater zero-discharge treatment system based on flue gas evaporation generally adopts the technical scheme that small-flow atomizing nozzles are arranged at multiple points on a flue, and each nozzle needs to be subjected to flow regulation and control and needs to be provided with a small-flow regulating valve. Because the waste water composition is complicated, and the corrosivity is strong, and the suspended solid content is high, and the governing valve commonly used generally only is applicable to the clean medium, and research and development is applicable to the flow control valve of complicated waste water medium and just becomes the problem that awaits measuring to solve.
Disclosure of Invention
The present invention is directed to a small flow regulating valve to solve the problems set forth above in the background art.
In order to achieve the purpose, the invention provides the following technical scheme:
the small-flow regulating valve comprises a valve seat, a valve core and a valve body, wherein the valve seat is arranged inside the valve body, the valve core is in threaded connection with a valve rod, a plurality of V-shaped grooves are formed in the outer cylindrical surface of the valve core according to the requirement of the flow, a support for installing the valve rod is arranged on the valve cover, a guide copper sleeve of the valve rod is arranged on the upper portion of the valve cover, and a limiting block is arranged on the valve rod.
As a further technical scheme of the invention: the valve cover is installed at the upper end of the valve body through a valve cover bolt, and a valve cover seal is arranged between the valve cover and the valve body.
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: and the inner surfaces of the V-shaped groove of the valve core and the valve seat are subjected to erosion-resistant strengthening treatment.
As a further technical scheme of the invention: and a valve seat seal is arranged between the valve seat and the valve body.
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 mode of opening the V-shaped groove on the outer cylindrical surface of the valve core is adopted, the precision of the V-shaped groove can be easily controlled, and the requirements of various types of flow characteristics can be met.
2. Due to the adoption of the cylindrical matching surface, the matching precision of the valve seat and the valve core is easy to realize, and the processing precision can be improved as required, so that the performance of the regulating valve is improved.
3. Because the V-shaped groove formed on the outer cylindrical surface of the valve core is consistent with the flowing direction of the medium, the medium has the slightest scouring on the throttling channel, and the service life of the valve core can be prolonged to the utmost extent.
4. Along with valve rod rebound, V-arrangement groove degree of depth increases gradually, and the area of overflowing also increases gradually, and even solid impurity in the medium blocks up the passageway that overflows, also can wash impurity at the valve opening in-process to avoid being used for containing solid impurity medium governing valve and leading to the malfunctioning problem of valve regulation because of blockking up.
5. The cylindrical surface of the main sealing surface of the valve is not only easy to accurately process, but also avoids medium erosion in use, thereby prolonging the overall service life of the valve.
6. The invention can set 1 or more V-shaped grooves according to the working parameters of the valve, thereby greatly improving the adaptability of the regulating valve under the working condition of small flow.
Drawings
FIG. 1 is a block diagram of the present invention.
Fig. 2 is an enlarged view of the valve element and valve seat structure in fig. 1.
FIG. 3 is a graph of the V-groove machining of the valve core.
In the figure: 1-valve seat seal, 2-valve seat, 3-valve body, 4-valve cover seal, 5-packing gland, 6-gland bolt, 7-limiting block, 8-valve cover, 9-valve rod, 10 copper sleeve, 11-packing, 12-valve cover bolt and 13-valve core.
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. 1-3, example 1: a small flow control valve, it is made up of valve block 3 that valve base 2, valve core 13 make up, the connection size of the valve block 3 is designed according to the standard of the stop valve, adopt the flange to connect, the valve base 2 is installed inside valve block 3, there is valve base seal 1 between 2 and the valve base, its hole and cylindrical valve core clearance fit; the valve core 13 is connected with the valve rod 9 through threads, a plurality of V-shaped grooves are formed in the outer cylindrical surface of the valve core 13, and the groove depth is calculated according to the adjustment performance requirement of the valve; the valve cover 8 is provided with a support for installing the valve rod 9, the upper part of the valve cover 8 is provided with a guide copper sleeve 10 of the valve rod 9, and the valve rod 9 is provided with a limiting block 7. The valve cover 8 is arranged at the upper end of the valve body 3 through a valve cover bolt 12, and a valve cover seal 4 is arranged between the valve cover 8 and the valve body 3. The valve rod 9 and the valve cover 8 are sealed by packing 11, and the packing 11 is fixed on the valve cover 8 through a packing gland 5 and a gland bolt 6. The valve element 13 is rotated by the valve rod 9. The valve seat 2 is arranged between the valve bodies 3 and is provided with a sealing gasket. When the valve core 13 slides upwards, the V-shaped groove on the outer cylindrical surface of the valve core is communicated with the inlet of the valve, and the valve is opened. The V-shaped groove is used as a throttling channel of the valve, the requirement of different working parameters of the valve can be met by adopting a method of changing the number of the V-shaped grooves under the condition of not changing the overall structure of the valve, and the standardization and the serialization of the valve are simpler and more convenient and easier.
The design has the core that the main seal of the valve is designed into a cylindrical surface, so that the valve is easy to process, the matching precision can be conveniently improved, the main seal surface is prevented from being damaged by medium erosion, the service life of the valve core can be greatly prolonged, and the problem that the main seal surface of the waste water regulating valve is easy to lose efficacy is solved; a V-shaped groove is processed on the outer cylindrical surface of the valve core, the groove depth is accurately calculated according to a flow characteristic curve, and the processing precision is ensured in a numerical control processing mode, so that the cross-sectional area of a valve overflowing channel well meets the requirement of accurate flow regulation; the surfaces of the inner hole of the valve seat and the V-shaped groove are subjected to strengthening treatment, and the insect resistance of the throttling channel is improved, so that the service life of the valve is prolonged.
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, comprises disk seat (2), case (13), valve body (3), its characterized in that, inside disk seat (2) installed in valve body (3), case (13) and valve rod (9) are with threaded connection, and case (13) outer face of cylinder is opened has a plurality of V-arrangement grooves, has the support that is used for installing valve rod (9) on valve gap (8), and valve gap (8) upper portion is equipped with direction copper sheathing (10) of valve rod (9), is equipped with stopper (7) on valve rod (9).
2. A small flow regulating valve according to claim 1, characterized in that the valve cover (8) is mounted on the upper end of the valve body (3) by means of a cover bolt (12), and a cover seal (4) is provided between the valve cover (8) and the valve body (3).
3. A small flow regulating valve according to claim 1, characterized in that the valve rod (9) and the valve cover (8) are sealed by packing (11), and the packing (11) is fixed on the valve cover (8) through a packing gland (5) and a gland bolt (6).
4. A small flow regulating valve according to claim 1, characterized in that the spool (13) is moved up and down by the valve stem (9).
5. A small flow rate regulating valve according to claim 1, wherein the V-shaped groove of the valve element (13) and the inner surface of the valve seat (2) are both treated with erosion resistance reinforcement.
6. A small flow regulating valve according to claim 1, characterized in that a valve seat seal (1) is provided between the valve seat (2) and the valve body (3).
7. A small 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 |
|---|---|---|---|
| CN202010702753.2A CN111779844A (en) | 2020-07-21 | 2020-07-21 | Small flow regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010702753.2A CN111779844A (en) | 2020-07-21 | 2020-07-21 | Small flow regulating valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111779844A true CN111779844A (en) | 2020-10-16 |
Family
ID=72763492
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010702753.2A Pending CN111779844A (en) | 2020-07-21 | 2020-07-21 | Small flow regulating valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111779844A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012149761A (en) * | 2010-12-28 | 2012-08-09 | Kitz Corp | Needle valve and o-ring |
| CN204267762U (en) * | 2014-11-04 | 2015-04-15 | 无锡市亚迪流体控制技术有限公司 | High Pressure Difference high-flow adjustable ratio control valve |
| CN204344965U (en) * | 2014-11-28 | 2015-05-20 | 浙江万龙机械有限公司 | The valve of valve rod high frequency movement |
| CN106884996A (en) * | 2015-12-16 | 2017-06-23 | 浙江三花制冷集团有限公司 | Electric expansion valve and its valve element |
| US20180106381A1 (en) * | 2015-03-12 | 2018-04-19 | Continental Automotive Gmbh | Valve Core Assembly And Compressed Gas Bypass Valve |
| CN208204026U (en) * | 2018-04-02 | 2018-12-07 | 新疆天河化工有限公司 | Antifreezing type circulating water flow drain valve |
| CN208487216U (en) * | 2018-06-08 | 2019-02-12 | 上海市特种设备监督检验技术研究院 | A kind of spool valve seat construction for small flow high-precision regulating valve |
| CN210128088U (en) * | 2019-05-21 | 2020-03-06 | 艺创阀门科技有限公司 | Pressure cage type micro flow regulating valve |
| CN210715971U (en) * | 2019-09-29 | 2020-06-09 | 李作为 | Long-life valve for treating multiphase flow medium |
| CN210890160U (en) * | 2019-09-23 | 2020-06-30 | 山东菲特自控阀门制造有限公司 | Series connection valve core double sealing surface multistage pressure reduction regulating valve |
-
2020
- 2020-07-21 CN CN202010702753.2A patent/CN111779844A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012149761A (en) * | 2010-12-28 | 2012-08-09 | Kitz Corp | Needle valve and o-ring |
| CN204267762U (en) * | 2014-11-04 | 2015-04-15 | 无锡市亚迪流体控制技术有限公司 | High Pressure Difference high-flow adjustable ratio control valve |
| CN204344965U (en) * | 2014-11-28 | 2015-05-20 | 浙江万龙机械有限公司 | The valve of valve rod high frequency movement |
| US20180106381A1 (en) * | 2015-03-12 | 2018-04-19 | Continental Automotive Gmbh | Valve Core Assembly And Compressed Gas Bypass Valve |
| CN106884996A (en) * | 2015-12-16 | 2017-06-23 | 浙江三花制冷集团有限公司 | Electric expansion valve and its valve element |
| CN208204026U (en) * | 2018-04-02 | 2018-12-07 | 新疆天河化工有限公司 | Antifreezing type circulating water flow drain valve |
| CN208487216U (en) * | 2018-06-08 | 2019-02-12 | 上海市特种设备监督检验技术研究院 | A kind of spool valve seat construction for small flow high-precision regulating valve |
| CN210128088U (en) * | 2019-05-21 | 2020-03-06 | 艺创阀门科技有限公司 | Pressure cage type micro flow regulating valve |
| CN210890160U (en) * | 2019-09-23 | 2020-06-30 | 山东菲特自控阀门制造有限公司 | Series connection valve core double sealing surface multistage pressure reduction regulating valve |
| CN210715971U (en) * | 2019-09-29 | 2020-06-09 | 李作为 | Long-life valve for treating multiphase flow medium |
Non-Patent Citations (1)
| Title |
|---|
| 谢苗等: "《液压元件设计》", 31 July 2017, 煤炭工业出版社（北京） * |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201016 |
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| RJ01 | Rejection of invention patent application after publication |