CN111255904A - Section-adjustable flow limiting valve - Google Patents
Section-adjustable flow limiting valve Download PDFInfo
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- CN111255904A CN111255904A CN202010104384.7A CN202010104384A CN111255904A CN 111255904 A CN111255904 A CN 111255904A CN 202010104384 A CN202010104384 A CN 202010104384A CN 111255904 A CN111255904 A CN 111255904A
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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
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
- F16K3/03—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with a closure member in the form of an iris-diaphragm
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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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/04—Construction of housing; Use of materials therefor of sliding valves
- F16K27/044—Construction of housing; Use of materials therefor of sliding valves slide valves with flat obturating members
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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
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/30—Details
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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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
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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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/53—Mechanical actuating means with toothed gearing
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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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/60—Handles
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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
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0008—Mechanical means
- F16K37/0016—Mechanical means having a graduated scale
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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
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0025—Electrical or magnetic means
- F16K37/0041—Electrical or magnetic means for measuring valve parameters
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sliding Valves (AREA)
- Indication Of The Valve Opening Or Closing Status (AREA)
- Electrically Driven Valve-Operating Means (AREA)
Abstract
The application is a restriction valve of cross-section adjustable, through at gate valve internally mounted rhombus dog, changes the position of rhombus dog when rotatory valve rod, lets its middle space go out the passageway that the fluid is convenient for to pass, controls the size of the gate valve flow of fluid flow through when changing inside aperture size, reaches the purpose of current-limiting. Meanwhile, the pressure reducing pore plate can have the functions of a pressure reducing pore plate when the pore diameter is a certain diameter. The inside current-limiting rhombic stop block is installed inside the valve body, sliding columns used for adjusting positions are arranged on two sides of the rhombic stop block, the change of the size of the inner aperture of the rhombic stop block is counted by changing the positions of the sliding columns, one side of each sliding column is installed in a valve body preset sliding rail groove attached to the sliding column, and the other side of each sliding column is installed in a built-in sliding groove of the rotatable adjusting turntable. When the hand wheel is convenient to rotate, the conical gear at the lower end of the valve rod drives the conical gear on the adjusting turntable, the adjusting turntable rotates, the position of the rhombic stop block is changed, and the inner aperture of the rhombic stop block is enlarged or reduced to achieve the purpose of flow limiting.
Description
Technical Field
The invention relates to industrial plumbing applications. In particular to a flow-limiting valve with adjustable cross section, which is used for fluid flowing through a gate valve and has the functions of flow limiting and pressure reducing.
Background
In the industry pipe network, many large-scale pipe networks need use the gate valve to control the interior fluidic break-make of pipeline, and in the gate valve use at present, produce great noise easily when the flow size that the gate valve was adjusted, still produce the gaseous phase easily simultaneously, can lead to the change of the great range flow direction of fluid when the fluid flows through between gate valve body and the baffle, lose more kinetic energy, produce great noise at the gap position, have great corrosion to valve body and baffle. Therefore, the applicant designs the flow limiting valve with the adjustable section, the flow limiting effect is realized by changing the position of the diamond-shaped stop block in the valve body and adjusting the size of the aperture at the middle position of the valve body, the fluid does not have large flow direction change when flowing through the aperture, large noise and gas phase are not generated, and the fluid can be subjected to pressure reduction treatment.
Disclosure of Invention
To solve the above existing problems. The invention provides a flow limiting valve with an adjustable section. The flow limiting valve with the adjustable cross section is designed for solving the problems that the flow direction of fluid is changed in a large range when the fluid flows between a valve body and a partition plate of a modern gate valve, more kinetic energy is lost, larger noise is generated at a gap position, a gas phase is generated, and the valve body and the partition plate are corroded greatly. To achieve this object:
the invention provides a flow-limiting valve with an adjustable section, which comprises a gate valve, a hand wheel, a valve body with an outlet butt flange, a valve body with an inlet butt flange, a conical gear valve rod, a valve body with a driven incomplete bevel gear disc, a sealing flange, a stud bolt nut, a connecting bolt, an adjusting rotary disc, a sliding column groove, a diamond-shaped baffle group and a sliding column, wherein the valve body part of the valve body with the outlet butt flange and the valve body part of the valve body with the inlet butt flange are connected to form a valve, the bevel gear part of the conical gear valve rod is meshed with the bevel gear part of the driven incomplete bevel gear disc and drives the internal driven incomplete bevel gear disc to rotate through the rotation of the installed conical gear valve rod, the driven incomplete bevel gear disc is installed on the adjusting rotary disc through the connecting bolt, the sealing flange and the adjusting rotary disc are fixed together through the stud bolt nut, the upper end of the conical gear valve rod, the adjustable flow limiting device is characterized in that sliding column grooves are obliquely arranged at equal angles on the adjusting rotary disc, a rhombic block group capable of adjusting the size of the inner aperture is installed in a sealing flange between the driven incomplete bevel gear disc and the adjusting rotary disc, sliding columns are arranged at one ends of the rhombic blocks of the rhombic block group and penetrate through the sliding column grooves on the corresponding adjusting rotary disc, and the size of the inner aperture is adjusted by rotating the position of the inner rhombic block through the driven incomplete bevel gear disc to achieve flow limiting.
As a further improvement of the invention, the rotating shaft in the middle of the hand wheel is provided with scale marks at the hand wheel, so that the current state of the flange can be well indicated when the flange is opened and closed.
As a further improvement of the invention, the rear side convex part of the driven incomplete bevel gear disc is fixed in the arc track groove of the adjusting turntable, and the arc track groove 7 arranged on the adjusting turntable can well ensure the normal use of the gate valve, thereby avoiding the damage of internal devices caused by improper operation.
As a further improvement of the invention, the middle belt of the valve body is sealed by a driven incomplete bevel gear disc, a sealing flange and an adjusting turntable through metal gaskets, and metal sealing rings are adopted among all interfaces to prevent the leakage of fluid.
As a further improvement of the invention, a measuring unit is additionally arranged on a rotating shaft in the middle of the hand wheel, measured data are transmitted back to a computer, a single chip microcomputer and a PLC through wires, the controllers calculate flow values, then the flow values are compared with ideal flow values, the opening degree of the cross section is controlled by controlling a stepping motor, and the flow is controlled by additionally arranging the measuring unit.
As a further improvement of the invention, when the inner diameter of the fully opened pipeline is D, the pipe diameter of a certain position is D, the full scale range of the external scale is A, and the corresponding position when the pipe diameter is D is a, the measuring unit sends the voltage value of the position a to a computer, a singlechip, a PLC and the like for calculating and controlling the flow passing through the valve;
since the flow rate is the tube cross-sectional area flow rate is 0.02827 inner diameter square flow rate, the corresponding position relationship is:
the diameter of the pipe corresponding to the current time
Thus the flow rate
Wherein v is the liquid flow rate, if water, the flow rate is 1-3m/s, A is the full scale numerical value of the scale, D is the maximum pipe diameter value of the valve body, namely the inherent pipe diameter value, and a is the currently set scale position;
therefore, the flow passing through the valve can be controlled by changing the pipe diameter, the corresponding scale position a changes when the pipe diameter is changed, and the flow can be determined by observing the numerical value of a;
the voltage at the position a is detected by a voltage division method, and the value is sent to a computer, a single chip microcomputer and a PLC for calculating and controlling the flow passing through the valve.
The invention provides a flow limiting valve with an adjustable section, which is specifically designed as follows:
1) the inner cavity is designed to be a rhombic stop block, the rhombic stop block is arranged on the adjusting turntable through a sliding column per se, and the size of the inner aperture is changed by rotating the adjusting turntable to adjust the position of the rhombic stop block;
2) the utility model provides an adjust the carousel in gate valve passes through connecting bolt to be fixed on taking the carousel that the rhombus was handled, and the design of valve rod lower extreme has the valve rod that the rhombus was handled, through the hand wheel of upper end design, thereby drives the carousel rotation of taking the rhombus gear when rotating and drive and adjust the carousel and rotate, adjusts the slide column of rhombus dog when rotatory and removes the purpose that reaches regulation rhombus dog position in the slide column inslot.
3) The inside rhombus dog of this application gate valve and regulation between the carousel seal it inside the valve body through bolt and sealing flange, adopt metal seal circle between each interface, prevent fluidic seepage.
4) The design circular arc orbit groove on this application regulation carousel limits the rotatory maximum scope of valve rod when opening and closing, avoids leading to the damage of gate valve because of improper use.
Drawings
FIG. 1 is a general schematic of the present invention;
FIG. 2 is a partial schematic view of the first embodiment of the present invention;
FIG. 3 is a partial schematic view of the present invention;
FIG. 4 is a partial schematic view of the third embodiment of the present invention;
FIG. 5 is a partial schematic view of the present invention;
FIG. 6 is a partial schematic view of the present invention;
FIG. 7 is a sixth schematic view of a portion of the present invention;
FIG. 8 is a seventh partial schematic view of the present invention;
FIG. 9 is a partial schematic view eight of the present invention;
illustration of the drawings:
scale marks at the positions of a hand wheel 1 and a hand wheel 2, a valve body with an outlet butt flange 3, a valve body with an inlet butt flange 4, a valve rod of a bevel gear 5, a valve plate with a driven incomplete bevel gear 6, a circular arc track groove 7, a sealing flange 8, a stud nut 9, a connecting bolt 10, an adjusting turntable 11, a sliding column groove 12, a rhombic stop block 13 and a sliding column 14.
Detailed Description
The invention is described in further detail below with reference to the following detailed description and accompanying drawings:
the invention provides a flow limiting valve with an adjustable section. Aiming at the problems that the large-amplitude flow direction change of fluid can be caused when the fluid flows through the gate valve to adjust the flow of the existing gate valve and the partition plate, more kinetic energy is lost, larger noise and gas phase are generated at the position of a gap, and the valve body and the partition plate are subjected to large corrosion action, the flow limiting valve with the adjustable section is designed;
as an embodiment of the invention, the invention provides a flow-limiting valve with an adjustable section, which is shown in fig. 1-9 and comprises a hand wheel 1, scale marks 2 at the hand wheel, an outlet butt flange 3, an inlet butt flange 4, a conical gear valve rod 5, a driven incomplete bevel gear disc 6, an arc track groove 7, a sealing flange 8, a stud bolt nut 9, a connecting bolt 10, an adjusting rotary disc 11, a sliding column groove 12, a diamond-shaped stop 13 and a sliding column 14. The gate valve is internally provided with a diamond-shaped stop dog 13 capable of adjusting the size of the inner aperture, the mounted conical gear valve rod 5 rotates to drive the driven incomplete bevel gear disc 6 inside, and the position of the diamond-shaped stop dog 13 inside is adjusted to adjust the size of the inner aperture to realize flow limiting. The gate valve is externally composed of a hand wheel 1, scale marks 2 at the hand wheel, an outlet butt flange 3, an inlet butt flange 4 and a protective cover. The scale mark 2 and the hand wheel 1 at the hand wheel are arranged on a valve rod 5 with a conical gear at the lower end. The lower end of the conical gear valve rod 5 is arranged in a processing gear with a driven incomplete bevel gear disk 6 through a gear. The driven incomplete bevel gear disc 6 is arranged on the adjusting turntable 11 through a connecting bolt 10, and the adjusting turntable 11 can be driven to rotate by the rotation of a hand wheel. A sliding column groove 12 is arranged on the adjusting rotary disc 11, a sliding column 14 on a diamond-shaped block 13 is arranged in the sliding column groove 12, and a sliding column 14 at the other end of the diamond-shaped block 13 is arranged in the sliding column groove which is preset on the inner shell of the inlet valve body 4. The mounted diamond-shaped stop 13 and the adjusting dial 11 are mounted between the valve body and the sealing flange 8. The stud nuts 9 secure the sealing flange 8 and the adjustment dial 11 together. The middle position of the valve body is sealed by a metal gasket, so that the fluid is ensured not to leak when passing through the valve body. The scale mark 2 at the hand wheel is arranged at the hand wheel 1 at the upper end of the gate valve, so that the current state of the flange can be well indicated when the gate valve is opened and closed. Through the gear conversion of installation on the valve rod, inside sets up rhombus dog 13, and during rotatory valve rod, the gear drives and adjusts 11 rotatory adjustment rhombus dog 13 positions of carousel, realizes the current-limiting to the inside fluidic of gate valve. Set up the normal use of guaranteeing the gate valve that circular arc orbit groove 7 can be fine on adjusting the carousel, avoid because of the misoperation, lead to the damage of inside device.
The middle rotating shaft of the hand wheel is additionally provided with a measuring unit, measured data are transmitted back to the computer, the single chip microcomputer and the PLC through wires, the controllers calculate flow numerical values, the flow numerical values are compared with ideal flow numerical values, the opening degree of the cross section is controlled by controlling the stepping motor, and the flow is controlled by additionally arranging the measuring unit.
As a further improvement of the invention, when the inner diameter of the fully opened pipeline is D, the pipe diameter of a certain position is D, the full scale range of the external scale is A, and the corresponding position when the pipe diameter is D is a, the measuring unit sends the voltage value of the position a to a computer, a singlechip, a PLC and the like for calculating and controlling the flow passing through the valve;
since the flow rate is the tube cross-sectional area flow rate is 0.02827 inner diameter square flow rate, the corresponding position relationship is:
the diameter of the pipe corresponding to the current time
Thus the flow rate
Wherein v is the liquid flow rate, if water, the flow rate is 1-3m/s, A is the full scale numerical value of the scale, D is the maximum pipe diameter value of the valve body, namely the inherent pipe diameter value, and a is the currently set scale position;
therefore, the flow passing through the valve can be controlled by changing the pipe diameter, the corresponding scale position a changes when the pipe diameter is changed, and the flow can be determined by observing the numerical value of a;
the voltage at the position a is detected by a voltage division method, and the value is sent to a computer, a single chip microcomputer and a PLC for calculating and controlling the flow passing through the valve.
The working principle of the application is as follows:
the gate valve internally mounted has the rhombus dog that can adjust inside aperture size, and the rotatory driven incomplete bevel gear dish of taking that drives through the conical gear valve rod of installation adjusts the size realization current-limiting in inside aperture that the position of inside rhombus dog is adjusted. The upper end of the conical gear valve rod is provided with a hand wheel, and the lower end gear is arranged in a processing gear with a driven incomplete bevel gear disc. The driven incomplete bevel gear disc is arranged on the adjusting turntable through the connecting bolt, and the adjusting turntable can be driven to rotate by the rotation of the hand wheel. The adjusting turntable is provided with a sliding column groove, a sliding column on a rhombic block is arranged in the sliding column, and a sliding column at the other end of the rhombic block is arranged in the sliding column groove which is preset on the inner shell of the inlet end valve body. The diamond-shaped stop block and the adjusting rotary disc are arranged between the valve body and the sealing flange. The inlet valve body, the sealing flange and the outlet valve body are connected and fixed into an integral gate valve through the fixing bolts. The middle position of the valve body is sealed by a metal gasket, so that the fluid is ensured not to leak when passing through the valve body. The scale marks at the hand wheel are arranged at the hand wheel at the upper end of the gate valve, so that the current state of the flange can be well indicated when the gate valve is opened and closed. When the valve is used, the gear is installed on the valve rod for conversion, the valve rod is rotated, the gear drives the adjusting turntable to rotate, the sliding column groove in the adjusting turntable drives the sliding column to move, and the position of the rhombic stop block is adjusted, so that the size of the flow aperture in the gate valve is changed, and the flow limitation of fluid in the gate valve is realized. Set up the normal use of guaranteeing the gate valve that circular arc orbit groove can be fine on adjusting the carousel, avoid because of the misoperation, lead to the damage of inside device. Both ends of the gate valve are provided with flanges convenient to connect.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, but any modifications or equivalent variations made according to the technical spirit of the present invention are within the scope of the present invention as claimed.
Claims (6)
1. The utility model provides a restriction valve of adjustable cross-section, includes gate valve, hand wheel (1), takes outlet flange valve body (3), takes inlet flange valve body (4), conical gear valve rod (5), takes driven incomplete bevel gear dish (6), sealing flange (8), stud nut (9), connecting bolt (10), adjusts carousel (11), traveller groove (12), rhombus baffle group and traveller (14), its characterized in that: the valve body part with the outlet butt flange valve body (3) is connected with the valve body part with the inlet butt flange valve body (4) to form a valve, a bevel gear part of a bevel gear valve rod (5) is meshed with a bevel gear part with a driven incomplete bevel gear disc (6) and drives the driven incomplete bevel gear disc (6) inside to rotate through the rotation of the mounted bevel gear valve rod (5), the driven incomplete bevel gear disc (6) is mounted on an adjusting turntable (11) through a connecting bolt (10), a sealing flange (8) is fixed with the adjusting turntable (11) through a stud nut (9), a hand wheel (1) is mounted at the upper end of the bevel gear valve rod (5) and drives the adjusting turntable (11) to rotate through the rotation of the hand wheel (1), a sliding column groove (12) is obliquely arranged at an equal angle on the adjusting turntable (11), and the sealing flange (8) between the driven incomplete bevel gear disc (6) and the adjusting turntable (11) The internal installation can adjust the rhombus dog group of inside aperture size, rhombus dog (13) one end of rhombus dog group has traveller (14), traveller (14) pass and correspond and adjust upper sliding column groove (12) on carousel (11), adjust the size realization current-limiting in inside aperture through the position of taking from incomplete bevel gear dish (6) rotation adjustment inside rhombus dog (13).
2. A constrictor valve with adjustable cross-section according to claim 1, wherein: and the middle rotating shaft of the hand wheel (1) is provided with scale marks (2) at the hand wheel.
3. A constrictor valve with adjustable cross-section according to claim 1, wherein: the rear side of the driven incomplete bevel gear disc (6) is fixed in the arc track groove (7) of the adjusting turntable (11).
4. A constrictor valve with adjustable cross-section according to claim 1, wherein: the middle of the valve body is provided with a driven incomplete bevel gear disc (6), a sealing flange (8) and an adjusting turntable (11) which are sealed through metal gaskets.
5. A constrictor valve with adjustable cross-section according to claim 1, wherein: the middle rotating shaft of the hand wheel (1) is additionally provided with a measuring unit, measuring data are transmitted back to a computer, a single chip microcomputer and a PLC through wires, the controllers calculate flow values, the flow values are compared with ideal flow values, and the opening degree of the cross section is controlled by controlling a stepping motor.
6. A constrictor valve with an adjustable cross-section according to claim 5, wherein: when the inner diameter of the completely opened pipeline is D, the pipe diameter of a certain position is D, the full scale range of the outside is A, and the corresponding position is a when the pipe diameter is D, the measuring unit sends the voltage value of the position a to a computer, a singlechip, a PLC and the like for calculating and controlling the flow passing through the valve;
since the flow rate is the tube cross-sectional area flow rate is 0.02827 inner diameter square flow rate, the corresponding position relationship is:
the diameter of the pipe corresponding to the current time
Thus the flow rate
Wherein v is the liquid flow rate, if water, the flow rate is 1-3m/s, A is the full scale numerical value of the scale, D is the maximum pipe diameter value of the valve body, namely the inherent pipe diameter value, and a is the currently set scale position;
therefore, the flow passing through the valve can be controlled by changing the pipe diameter, the corresponding scale position a is changed when the pipe diameter is changed, and the flow can be determined by observing the numerical value of a.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010104384.7A CN111255904A (en) | 2020-02-20 | 2020-02-20 | Section-adjustable flow limiting valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010104384.7A CN111255904A (en) | 2020-02-20 | 2020-02-20 | Section-adjustable flow limiting valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111255904A true CN111255904A (en) | 2020-06-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010104384.7A Pending CN111255904A (en) | 2020-02-20 | 2020-02-20 | Section-adjustable flow limiting valve |
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| Country | Link |
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| CN (1) | CN111255904A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111677882A (en) * | 2020-06-15 | 2020-09-18 | 江苏圣泰阀门有限公司 | Ultra-low temperature stop valve |
| CN111963703A (en) * | 2020-08-07 | 2020-11-20 | 合肥翰骏环保技术开发有限公司 | Drainage current-limiting adjusting device |
| CN112145485A (en) * | 2020-09-07 | 2020-12-29 | 长江大学 | Ejector device with adjustable nozzle cross-sectional area |
| CN112412729A (en) * | 2020-12-04 | 2021-02-26 | 河南玄龟智能科技研究院有限公司 | Plunger urea pump |
| CN113090780A (en) * | 2021-03-29 | 2021-07-09 | 浙江理工大学 | Valve opening and closing structure and valve |
| CN113245524A (en) * | 2021-05-26 | 2021-08-13 | 重庆市搏润模具有限公司 | Lubricating and spraying device for die-casting die |
| CN114508602A (en) * | 2021-11-30 | 2022-05-17 | 山东大学 | Precise flow regulating valve device |
| CN117837362A (en) * | 2024-03-07 | 2024-04-09 | 山东省农业机械科学研究院 | Water and fertilizer regulating and controlling conveying pipeline |
| CN117883957A (en) * | 2024-03-15 | 2024-04-16 | 山东艾琳智能科技有限公司 | Air conditioning system with air port opening degree adjustment |
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2020
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| CN107076153A (en) * | 2014-09-19 | 2017-08-18 | 阿特拉斯·科普柯空气动力股份有限公司 | Inlet valve for compressor |
| CN107076317A (en) * | 2014-09-30 | 2017-08-18 | 日本电产科宝株式会社 | Volume control device and vehicle |
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