CN111425771A - Valve of vacuum cover capable of accurately testing leakage condition of filler - Google Patents
Valve of vacuum cover capable of accurately testing leakage condition of filler Download PDFInfo
- Publication number
- CN111425771A CN111425771A CN202010289609.0A CN202010289609A CN111425771A CN 111425771 A CN111425771 A CN 111425771A CN 202010289609 A CN202010289609 A CN 202010289609A CN 111425771 A CN111425771 A CN 111425771A
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- Prior art keywords
- shell
- fixedly connected
- valve
- rotating
- rod
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/02—Preventing, monitoring, or locating loss
- F17D5/06—Preventing, monitoring, or locating loss using electric or acoustic means
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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
- F16K37/0075—For recording or indicating the functioning of a valve in combination with test equipment
- F16K37/0091—For recording or indicating the functioning of a valve in combination with test equipment by measuring fluid parameters
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
- G08B21/24—Reminder alarms, e.g. anti-loss alarms
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B3/00—Audible signalling systems; Audible personal calling systems
- G08B3/10—Audible signalling systems; Audible personal calling systems using electric transmission; using electromagnetic transmission
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Electromagnetism (AREA)
- Indication Of The Valve Opening Or Closing Status (AREA)
Abstract
The invention relates to the technical field of valve detection, and discloses a valve of a vacuum cover, which can accurately test the leakage condition of a filler, and comprises a first shell and a second shell, wherein the first shell is fixedly connected with the vacuum cover on the outside, the first shell is movably connected with a valve in the inside, the first shell is movably connected with a rotating shaft in the inside, the rotating shaft is fixedly connected with a rotating wheel on the outside, the rotating wheel is fixedly connected with a wind wheel on the outside, the second shell is movably connected with a rotating assembly in the inside, the second shell is fixedly connected with a supporting rod in the inside, the supporting rod is movably connected with a telescopic assembly on the outside, and the second shell is fixedly; under the interaction of the first shell, the valve, the rotating shaft, the rotating wheel, the wind wheel and the rotating assembly, when filler leakage occurs, the wind wheel rotates due to the accumulation of the filler, and therefore preconditions are provided for subsequent early warning and accurate measurement of leakage, and the use of actual production can be better met.
Description
Technical Field
The invention relates to the technical field of valve detection, in particular to a valve of a vacuum cover, which can accurately test the leakage condition of a filler.
Background
Valves are plumbing accessories used to open and close a pipe, control flow direction, regulate and control parameters of the transport medium (temperature, pressure and flow). According to their function, they can be classified into shut-off valves, check valves, regulating valves, and the like.
The valve is a control part in a fluid conveying system and has the functions of stopping, adjusting, guiding, preventing counter flow, stabilizing pressure, shunting or overflowing and relieving pressure and the like. Valves used in fluid control systems range in variety and size from the simplest shut-off valves to the variety of valves used in extremely complex autonomous systems.
Valves become one of essential parts in daily life and industrial production, but some valves have problems in design, production and use, so that the valves are not closed tightly and lose original functions, and thus, the condition of filler leakage of products using the valves can be caused, so that the problems of filler waste, threat of the filler to the environment and the like are very likely to be caused, the subsequent influence caused by the problems also causes important losses of economy, environment and the like, and the safety of people and other things is seriously threatened.
Therefore, in order to solve these problems, a valve of a vacuum chamber capable of accurately testing the leakage condition of the filling material is required.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides the valve of the vacuum cover, which can accurately test the leakage condition of the filler, has the advantages of accurate detection of leakage and timely early warning, and solves the problems that the leakage condition of the filler can be caused on the product using the valve due to the fact that the valve is not closed tightly and loses the original function because of the problems in the design, production and use processes of some valves, so that the waste of the filler and the threat of the filler to the environment are caused very possibly, and the subsequent influence caused by the problems can cause great losses of economy, environment and the like, and seriously threaten the safety of human things and other things.
(II) technical scheme
In order to realize the purposes of accurately detecting leakage and early warning in time, the invention provides the following technical scheme: the utility model provides a can accurately test vacuum cover's of filler condition of revealing valve, including shell one and shell two, the outside fixedly connected with vacuum cover of shell one, the inside swing joint of shell one has the valve, the inside swing joint of shell one has the pivot, the outside fixedly connected with runner of pivot, the outside fixedly connected with wind wheel of runner, the inside swing joint of shell two has the runner assembly, the inside fixedly connected with bracing piece of shell two, the outside swing joint of bracing piece has flexible subassembly, the inside fixedly connected with lantern light of shell two, the inside fixedly connected with photosensitive assembly of shell two, the outside fixedly connected with bee calling organ of shell two, the outside fixedly connected with display of shell two.
Preferably, the second shell is fixed outside the first shell, and the right end of the first shell is provided with an emergency valve.
Preferably, the surface of the first shell is provided with a rotating hole, the specification of the rotating hole is matched with the specification of the rotating wheel and the wind wheel, the diameter of the rotating hole is matched with the width of the second shell, the specification of the wind wheel is matched with the first shell, and the outside of the rotating wheel is fixedly connected with a deflector rod.
Preferably, the rotating assembly mainly comprises a rotating shaft, a first bevel gear, a grooved pulley and a connecting rod, the rotating shaft is fixedly connected to the outer portion of the first bevel gear, one end, far away from the first bevel gear, of the rotating shaft is movably connected to the inner portion of the second shell, the connecting rod is fixedly connected to the outer portion of the first bevel gear, one end, far away from the first bevel gear, of the connecting rod is fixedly connected with the grooved pulley, and at least four rod grooves matched with the shifting rod are formed in the surface of.
Preferably, the telescopic assembly mainly comprises two support rods, four connecting rods, two corresponding connecting rods movably connected to the outside of the support rods respectively, and one end of the two connecting rods far away from the supporting rod is movably connected with the outer part of the movable block, the inner part of the movable block and the outer part of the rotating rod are provided with thread structures, the movable block is movably connected with the outer part of the rotating rod through the thread structures, the other two connecting rods are also movably connected with the outer parts of the corresponding movable blocks, the one end that the movable block was kept away from to these two connecting rods and the outside swing joint of stock, five apertures are no less than offered to the outside of stock, the pole hole has been offered on the surface of shell two and with the stock phase-match, the one end fixedly connected with bevel gear two of bull stick, the specification and the connecting rod phase-match of this bevel gear two, bevel gear one and bevel gear two to the meshing.
Preferably, the small lamp and the photosensitive assembly are fixed on two corresponding sides inside the rod hole, the photosensitive assembly mainly comprises a shading shell, a photosensitive resistor and a transparent shell, the shading shell is fixed inside the second shell, the photosensitive resistor is fixed inside the shading shell, the transparent shell is embedded on the surface of the shading shell, and the specification of the transparent shell is matched with the small lamp and the small hole.
Preferably, the buzzer and the display are both electrically connected with the photoresistor.
(III) advantageous effects
Compared with the prior art, the invention provides the valve of the vacuum cover, which can accurately test the leakage condition of the filler, and has the following beneficial effects:
1. this can accurately test vacuum cover's of filler condition of revealing valve, through under the interact between shell one, valve, pivot, runner, wind wheel, the runner assembly, can make when taking place the filler and revealing, the pile up of filler makes the wind wheel rotate, and this will provide the prerequisite for subsequent early warning and accurate measurement volume of revealing, also will accord with the use of actual production like this.
2. This can accurately test vacuum cover's of filler condition of revealing valve, through bracing piece, flexible subassembly, lantern bulb, photosensitive element, bee calling organ, under the interact between the display, can be so that under the characteristic of photo resistance, the quantity of revealing is responded to according to the number of times of received light that can be accurate to also can make bee calling organ send the early warning, the use that is fit for the user so more, the demand of also being convenient for production.
Drawings
FIG. 1 is a schematic partial cross-sectional view of the inventive structure;
FIG. 2 is a schematic view of the structure of FIG. 1 at A according to the present invention;
FIG. 3 is a schematic view of the structure of FIG. 1 at B according to the present invention;
FIG. 4 is a schematic view of the connection relationship among the rotating shaft, the rotating wheel, the wind wheel, the rotating assembly and the telescopic assembly.
In the figure: 1. a first shell; 2. a second shell; 3. a vacuum hood; 4. a valve; 5. a rotating shaft; 6. a rotating wheel; 7. a wind wheel; 8. a rotating assembly; 9. a support bar; 10. a telescoping assembly; 11. a small lamp; 12. a photosensitive element; 13. a buzzer; 14. a display.
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, a valve of a vacuum hood capable of accurately testing a leakage condition of a filler includes a first housing 1 and a second housing 2, the first housing 1 is fixedly connected with a vacuum hood 3 at the outside, the first housing 1 is movably connected with a valve 4 at the inside, the second housing 2 is fixed at the outside of the first housing 1, and an emergency valve 4 is arranged at the right end of the first housing 1; a rotating shaft 5 is movably connected inside the shell I1, a rotating wheel 6 is fixedly connected outside the rotating shaft 5, a wind wheel 7 is fixedly connected outside the rotating wheel 6, a rotating hole is formed in the surface of the shell I1, the specification of the rotating hole is matched with the specifications of the rotating wheel 6 and the wind wheel 7, the diameter of the rotating hole is matched with the width of the shell II 2, the specification of the wind wheel 7 is matched with the shell I1, and a deflector rod is fixedly connected outside the rotating wheel 6; the inner part of the shell II 2 is movably connected with a rotating assembly 8, the rotating assembly 8 mainly comprises a rotating shaft 5, a bevel gear I, a grooved pulley and a connecting rod, the rotating shaft 5 is fixedly connected to the outer part of the bevel gear I, one end, far away from the bevel gear I, of the rotating shaft 5 is movably connected to the inner part of the shell II 2, the connecting rod is fixedly connected to the outer part of the bevel gear I, one end, far away from the bevel gear I, of the connecting rod is fixedly connected with the grooved pulley, and at least four rod grooves matched with the; through the interaction among the first shell 1, the valve 4, the rotating shaft 5, the rotating wheel 6, the wind wheel 7 and the rotating assembly 8, when filler leakage occurs, the wind wheel 7 rotates due to the accumulation of the filler, and therefore preconditions are provided for subsequent early warning and accurate measurement of leakage, and the use of actual production is more met.
The inside of the second shell 2 is fixedly connected with a support rod 9, the outside of the support rod 9 is movably connected with a telescopic component 10, the telescopic component 10 mainly comprises two connecting rods, a rotating rod, a movable block, a long rod and a bevel gear II, the number of the support rods 9 is two, the number of the connecting rods is four, two corresponding connecting rods are respectively movably connected with the outside of the support rod 9, one ends of the two connecting rods, far away from the support rod 9, are movably connected with the outside of the movable block, the inside of the movable block and the outside of the rotating rod are provided with thread structures, the movable block is movably connected with the outside of the rotating rod through the thread structures, the other two connecting rods are also movably connected with the outside of the corresponding movable block, one ends of the two connecting rods, far away from the movable block, are movably connected with the outside of the long rod, the outside of the long rod is provided with at, the specification of the bevel gear II is matched with that of the connecting rod, and the bevel gear I and the bevel gear are meshed in two directions.
A small lamp 11 is fixedly connected inside the second shell 2, a photosensitive assembly 12 is fixedly connected inside the second shell 2, the small lamp 11 and the photosensitive assembly 12 are fixed on two corresponding sides inside the rod hole, the photosensitive assembly 12 mainly comprises a shading shell, a photosensitive resistor and a transparent shell, the shading shell is fixed inside the second shell 2, the photosensitive resistor is fixed inside the shading shell, the transparent shell is embedded on the surface of the shading shell, and the specification of the transparent shell is matched with the small lamp 11 and the small hole; the buzzer 13 is fixedly connected to the outside of the second shell 2, and the display 14 is fixedly connected to the outside of the second shell 2; the buzzer 13 and the display 14 are both electrically connected with the photoresistor; under the interact through bracing piece 9, flexible subassembly 10, small lamp 11, photosensitive element 12, bee calling organ 13, display 14 between, can be so that under the characteristic of photo resistance, the quantity of revealing is sensed according to the number of times of being received light that can be accurate to also can make bee calling organ 13 send the early warning, be fit for user's use like this more, the demand of also being convenient for production.
The working process and the principle are that when the device starts to be started, as the outer part of the shell I1 is fixedly connected with the vacuum cover 3, the inner part of the shell I1 is movably connected with the valve 4, the inner part of the shell I1 is movably connected with the rotating shaft 5, the outer part of the rotating shaft 5 is fixedly connected with the rotating wheel 6, the outer part of the rotating wheel 6 is fixedly connected with the wind wheel 7, the inner part of the shell II 2 is movably connected with the rotating assembly 8, the shell II 2 is fixed on the outer part of the shell I1, the right end of the shell I1 is provided with the emergency valve 4, the surface of the shell I1 is provided with the rotating hole, the specification of the rotating hole is matched with the specifications of the rotating wheel 6 and the wind wheel 7, the diameter of the rotating hole is matched with the width of the shell II 2, the specification of the wind wheel 7 is matched with the shell I1, the outer part of the rotating, this one end swing joint that bevel gear was kept away from to pivot 5 is in the inside of shell two 2, bevel gear's outside fixedly connected with connecting rod, bevel gear's one end and sheave fixed connection are kept away from to the connecting rod, the surface of sheave is seted up and is no less than four and driving lever assorted pole grooves, take place to reveal when filling this moment, the filler of revealing is piled up and can be driven the motion of wind wheel 7, the motion of wind wheel 7 drives runner 6 and rotates under the effect of pivot 5 and connecting rod, runner 6 rotates and drives the sheave motion under the effect of driving lever and pole groove, the sheave motion drives bevel gear and rotates under the effect of pivot 5.
Because the inside of the second shell 2 is fixedly connected with a supporting rod 9, the outside of the supporting rod 9 is movably connected with a telescopic component 10, the inside of the second shell 2 is fixedly connected with a small lamp 11, the inside of the second shell 2 is fixedly connected with a photosensitive component 12, the outside of the second shell 2 is fixedly connected with a buzzer 13, the outside of the second shell 2 is fixedly connected with a display 14, the telescopic component 10 mainly comprises two connecting rods, a rotating rod, a movable block, a long rod and a bevel gear, the number of the supporting rods 9 is two, the number of the connecting rods is four, two corresponding connecting rods are respectively and movably connected with the outside of the supporting rod 9, one end of each connecting rod, which is far away from the supporting rod 9, is movably connected with the outside of the movable block, the inside of the movable block and the outside of the rotating rod are provided with thread structures, the movable block is movably connected with, one end of the two connecting rods, which is far away from the movable block, is movably connected with the outside of the long rod, at least five small holes are formed in the outside of the long rod, a rod hole is formed in the surface of the second shell 2 and is matched with the long rod, a bevel gear II is fixedly connected with one end of the rotating rod, the specification of the bevel gear II is matched with the connecting rods, the bevel gear I is meshed with the bevel gear in two directions, the small lamp 11 and the photosensitive component 12 are fixed on two corresponding sides in the rod hole, the photosensitive component 12 mainly comprises a shading shell, a photosensitive resistor and a transparent shell, the shading shell is fixed in the second shell 2, the photosensitive resistor is fixed in the shading shell, the transparent shell is embedded in the surface of the shading shell, the specification of the transparent shell is matched with the small lamp 11 and the small holes, the buzzer 13 and the display 14 are electrically connected with the photosensitive resistor, the small lamp 11 and the photosensitive resistor are, two rotations of bevel gear drive bull stick and rotate, the bull stick rotates and drives the movable block motion, the movable block motion drives the connecting rod motion under the effect of bracing piece 9, the connecting rod motion drives the stock motion, little lamp 11 makes the photo resistance intermittent type nature of correspondence sense light under the aperture effect on stock surface, the number of times that resistance changes can show and do benefit to the user on display 14 and judge the volume of revealing like this, and photo resistance changes when not reaching light in the response and makes bee calling organ 13 send the sound and remind the user.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. A valve of a vacuum cover capable of accurately testing the leakage condition of a filler comprises a first shell (1) and a second shell (2), and is characterized in that: the utility model discloses a solar energy water heater, including shell one (1), the inside fixedly connected with vacuum hood (3) of shell one (1), the inside swing joint of shell one (1) has valve (4), the inside swing joint of shell one (1) has pivot (5), outside fixedly connected with runner (6) of pivot (5), outside fixedly connected with wind wheel (7) of runner (6), the inside swing joint of shell two (2) has runner assembly (8), inside fixedly connected with bracing piece (9) of shell two (2), the outside swing joint of bracing piece (9) has flexible subassembly (10), the inside fixedly connected with lantern (11) of shell two (2), the inside fixedly connected with photosensitive assembly (12) of shell two (2), outside fixedly connected with bee calling organ (13) of shell two (2), outside fixedly connected with display (14) of shell two (2).
2. A valve for a vacuum housing capable of accurately testing a leak condition of a packing according to claim 1, wherein: the second shell (2) is fixed outside the first shell (1), and the right end of the first shell (1) is provided with an emergency valve (4).
3. A valve for a vacuum housing capable of accurately testing a leak condition of a packing according to claim 1, wherein: the surface of the first shell (1) is provided with a rotating hole, the specification of the rotating hole is matched with the specifications of the rotating wheel (6) and the wind wheel (7), the diameter of the rotating hole is matched with the width of the second shell (2), the specification of the wind wheel (7) is matched with the first shell (1), and the outside of the rotating wheel (6) is fixedly connected with a shifting lever.
4. A valve for a vacuum housing capable of accurately testing a leak condition of a packing according to claim 1, wherein: the rotating assembly (8) mainly comprises a rotating shaft (5), a first bevel gear, a grooved pulley and a connecting rod, wherein the rotating shaft (5) is fixedly connected to the outer portion of the first bevel gear, one end, far away from the first bevel gear, of the rotating shaft (5) is movably connected to the inner portion of the second shell (2), the connecting rod is fixedly connected to the outer portion of the first bevel gear, one end, far away from the first bevel gear, of the connecting rod is fixedly connected with the grooved pulley, and at least four rod grooves matched with the shifting rod are formed in the.
5. A valve for a vacuum housing capable of accurately testing a leak condition of a packing according to claim 1, wherein: the telescopic component (10) mainly comprises two connecting rods, a rotating rod, a movable block, a long rod and a bevel gear II, wherein the number of the supporting rods (9) is four, two corresponding connecting rods are respectively and movably connected to the outer part of the supporting rods (9), one ends of the two connecting rods, far away from the supporting rods (9), are movably connected with the outer part of the movable block, the inner part of the movable block and the outer part of the rotating rod are provided with thread structures, the movable block is movably connected with the outer part of the rotating rod through the thread structures, the other two connecting rods are also movably connected to the outer parts of the corresponding movable blocks, one ends of the two connecting rods, far away from the movable block, are movably connected with the outer part of the long rod, the outer part of the long rod is provided with at least five small holes, the surface of the shell II (2) is provided with a rod hole and is matched with the, the first bevel gear and the bevel gear are meshed in two directions.
6. A valve for a vacuum housing capable of accurately testing a leak condition of a packing according to claim 1, wherein: little lamp (11) and photosensitive assembly (12) are fixed in the inside both sides that correspond of pole hole, and photosensitive assembly (12) mainly comprise shading shell, photo resistance, transparent shell, and the shading shell is fixed in the inside of shell two (2), and photo resistance fixes in the inside of shading shell, and transparent shell inlays on the surface of shading shell, the specification and little lamp (11) and the aperture phase-match of transparent shell.
7. A valve for a vacuum housing capable of accurately testing a leak condition of a packing according to claim 1, wherein: the buzzer (13) and the display (14) are electrically connected with the photoresistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010289609.0A CN111425771A (en) | 2020-04-14 | 2020-04-14 | Valve of vacuum cover capable of accurately testing leakage condition of filler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010289609.0A CN111425771A (en) | 2020-04-14 | 2020-04-14 | Valve of vacuum cover capable of accurately testing leakage condition of filler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111425771A true CN111425771A (en) | 2020-07-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010289609.0A Withdrawn CN111425771A (en) | 2020-04-14 | 2020-04-14 | Valve of vacuum cover capable of accurately testing leakage condition of filler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111425771A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112691590A (en) * | 2020-12-25 | 2021-04-23 | 陆晓倩 | Coating mixing stirring device capable of discharging materials in time |
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| CN210069115U (en) * | 2019-06-05 | 2020-02-14 | 苏州阀医生流体控制技术有限公司 | Industrial valve packing sealing device |
| CN110864150A (en) * | 2019-11-26 | 2020-03-06 | 晟福（天津）流体自动控制设备有限公司 | Valve with leakage alarm function |
| CN210293550U (en) * | 2019-08-26 | 2020-04-10 | 江苏容大材料腐蚀检验有限公司 | Valve filler volatility leakage test driving device |
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2020
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203162554U (en) * | 2013-03-22 | 2013-08-28 | 李志永 | Wireless alarming device for ensuring normal steam conveying of heating pipeline |
| CN204922196U (en) * | 2015-07-30 | 2015-12-30 | 浙江利水铜业有限公司 | Can send valve of alarm |
| CN206278299U (en) * | 2016-11-21 | 2017-06-27 | 薛原 | A kind of quota of feed packaging facilities |
| CN206723566U (en) * | 2017-03-28 | 2017-12-08 | 吴燕 | A kind of novel valve |
| CN108382875A (en) * | 2018-02-12 | 2018-08-10 | 刘松 | A kind of livestock-raising pellet Quantitative dosing equipment |
| CN209426897U (en) * | 2019-01-24 | 2019-09-24 | 湖北双威科技有限公司 | Type AGV is born in roller docking |
| CN110159784A (en) * | 2019-05-15 | 2019-08-23 | 江苏师范大学 | A kind of valve of band leakage alarm set |
| CN210069115U (en) * | 2019-06-05 | 2020-02-14 | 苏州阀医生流体控制技术有限公司 | Industrial valve packing sealing device |
| CN210293550U (en) * | 2019-08-26 | 2020-04-10 | 江苏容大材料腐蚀检验有限公司 | Valve filler volatility leakage test driving device |
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| CN112691590A (en) * | 2020-12-25 | 2021-04-23 | 陆晓倩 | Coating mixing stirring device capable of discharging materials in time |
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Application publication date: 20200717 |